CN104159266A - Method and device for realizing proximity communication - Google Patents

Abstract

The invention discloses a method and device for implementing proximity communication, which are used to communicate through a third-party device that can serve as a relay node between the communication initiator and the communication target when the communication initiator and the communication target are not adjacent . The method in the embodiment of the present invention includes: after the communication initiator determines that it is not adjacent to the communication target party, it sends a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party, and the relay path The establishment request is used to initiate the establishment process of the first communication path between the third-party device and the communication target party, and the relay path establishment request carries at least identification information of the communication target party and QoS parameters corresponding to the first communication path; and After the communication initiator determines that the first communication path is established successfully and the second communication path established between itself and the third-party device is determined, the communication initiator communicates with the communication target party through the established first communication path and the second communication path.

Description

Method and device for implementing proximity communication

technical field

The present invention relates to the technical field of communication, in particular to a method and device for realizing proximity communication.

Background technique

In the current communication process between two user equipments (User Equipment, UE) defined in the 3rd Generation Partnership Project (3GPP), the data transmitted between the communication parties needs to be routed through the core network, as shown in Figure 1 The data channel for communication between UE1 and UE2 is given when the Serving Gateway (SGW) and Packet Data Network Gateway (PDN GW) of UE1 and UE2 are the same.

If the above-mentioned communication method is also used when transmitting data between two user equipments that are very close to each other, the communication delay will be very large, and more network resources will be occupied. Therefore, 3GPP is currently studying the communication technology between adjacent devices, that is, when the distance between two UEs that need to communicate is very close, the direct transmission of data between the two UEs is realized, and the data transmission path is shown in Figure 2 as shown in FIG. 3 ; or the communication between the two UEs is realized only by means of the transfer of the eNB, and the data transmission path thereof is shown in FIG. 3 .

During the proximity communication process, due to the change of the data transmission path, the paths for controlling the proximity communication are also different according to the different network environments of the communicating parties. When the serving eNB of the UE in proximity communication is the same and both communication parties are within the coverage of the network, the network can control the proximity communication by exchanging control information between the UE, eNB, and Evolved Packet Core (EPC). For the path, refer to the solid line with two-way arrows in Figure 4; when the serving eNBs of UEs in adjacent communication are different and both communication parties are within their respective network coverage, the EPC can perform signaling interaction with the serving eNBs of both communication parties respectively. The control path is represented by the solid line with double-headed arrows in FIG. 5 .

At present, in areas without network coverage, communication between terminals and the network side, as well as between terminals and terminals, is impossible. For this reason, Public Safety UE (Public Safety UE) is defined in the 3GPP standard. In areas without network coverage Proximity communication can still be performed between public safety UEs within public safety UEs, and its control path directly exists between public safety UEs, see the solid line with two-way arrows in Figure 6, where the public safety radio resource controller (Radio Resource Controller, RRC) is used to manage the allocation process of public safety proximity communication radio resources, and this function can be configured in the public safety UE. The public safety UE defined in the 3GPP standard can support the relay capability. Therefore, data transfer between two non-adjacent UEs can be performed through the public safety UE supporting the relay capability, or the public safety UE supporting the relay capability can The UE performs data transfer between the UE outside the network coverage and the network side. In order to realize the communication between the communication parties through the communication equipment supporting the relay capability (such as public safety UE), the following two problems need to be solved: one is the process of discovering the proximity relationship between the communication parties and the communication equipment supporting the relay capability, and the other is The process in which the two parties in communication realize the communication through the communication equipment supporting the relay capability.

To sum up, there is currently no solution to the problem that the communication parties implement communication through a communication device supporting a relay capability.

Contents of the invention

Embodiments of the present invention provide a method and device for implementing proximity communication, so that when the communication initiator and the communication target are not adjacent, the communication parties can use the first relay node between the communication initiator and the communication target. Three-party devices communicate.

An embodiment of the present invention provides a method for implementing proximity communication, including:

After the communication initiator determines that it is not adjacent to the communication target party, it sends a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party, and the relay path establishment request is used to initiate A process of establishing a first communication path between the third-party device and the communication target party, and the relay path establishment request at least carries the identification information of the communication target party and the corresponding information of the first communication path Quality of service QoS parameters;

After the communication initiator determines that the first communication path is established successfully and determines the second communication path established between itself and the third-party device, the communication initiator communicates with the communication path through the first communication path and the second communication path. The target party communicates.

An embodiment of the present invention provides a method for implementing proximity communication, including:

The third-party device receives the relay path establishment request sent by the communication initiator, and the relay path establishment request carries at least the identification information of the communication target party and the first request to be established between the third-party device and the communication target party. a QoS parameter corresponding to the communication path;

The third-party device determines a first communication path established between itself and the communication target party, and a second communication path established between itself and the communication initiator;

The third-party device forwards data between the communication initiator and the communication target through the first communication path and the second communication path;

Wherein, the third-party device is a communication device capable of serving as a relay node between the communication initiator and the communication target party.

An embodiment of the present invention provides a communication device, including:

A processing module, configured to send a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party after determining that it is not adjacent to the communication target party, and the relay path establishment request uses Initiating a process of establishing a first communication path between the third-party device and the communication target party, and the relay path establishment request carries at least identification information of the communication target party and the first communication path Corresponding quality of service QoS parameters;

The communication module is configured to communicate with the third-party device through the first communication path and the second communication path after determining that the first communication path is successfully established and determining the second communication path established between itself and the third-party device. The target party communicates.

An embodiment of the present invention provides a communication device, the communication device can serve as a relay node between the communication initiator and the communication target party, and the communication device includes:

The receiving module is configured to receive a relay path establishment request sent by the communication initiator, where the relay path establishment request at least carries the identification information of the communication target party and requests to establish the first communication between itself and the communication target party QoS parameters corresponding to the path;

a path establishment module, configured to determine a first communication path established between itself and the communication target party, and a second communication path established between itself and the communication initiator;

A data forwarding module, configured to forward data between the communication initiator and the communication target through the first communication path and the second communication path.

In the embodiment of the present invention, when the communication initiator determines that the communication target party is not adjacent to itself, it sends a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party, so as to initiate the third-party device The establishment process of the first communication path with the communication target party; after the communication initiator determines that the first communication path has been established successfully and determines the second communication path established between itself and the third-party device, through the established first communication path The path and the second communication path communicate with the communication target party.

Description of drawings

FIG. 1 is a schematic diagram of a data channel for inter-device communication defined by 3GPP in the background technology;

FIG. 2 is a schematic diagram of a data transmission path of the first proximity communication in the background technology;

FIG. 3 is a schematic diagram of a second proximity communication data transmission path in the background technology;

FIG. 4 is a schematic diagram of a control path when a UE performing proximity communication is located within network coverage and the serving base station is the same in the background art;

FIG. 5 is a schematic diagram of a control path when a UE performing proximity communication is located within network coverage and serving base stations are different in the background art;

FIG. 6 is a schematic diagram of a control path for a public security UE performing proximity communication in a scenario without network coverage in the background technology;

FIG. 7 is a schematic diagram of data transmission between public security UEs that are not adjacent to each other through a relay node in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a processing procedure at the communication initiator side in a method for implementing proximity communication provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a processing procedure at a communication device side adjacent to a communication initiator in a method for implementing proximity communication provided by an embodiment of the present invention;

FIG. 10 is a schematic diagram of a relay request process in Embodiment 1 provided by the present invention;

FIG. 11 is a schematic diagram of the process of establishing a relay path in Embodiment 1 provided by the present invention;

FIG. 12 is a schematic diagram of a communication path establishment process in Embodiment 1 provided by the present invention;

Figure 13 is a schematic flow diagram of Embodiment 2 provided by the present invention;

FIG. 14 is a schematic diagram of an application scenario of Embodiment 4 provided by the present invention;

Figure 15 is a schematic flow diagram of Embodiment 4 provided by the present invention;

Fig. 16 is a schematic flow chart of Embodiment 5 provided by the present invention;

Figure 17 is a schematic flow diagram of Embodiment 6 provided by the present invention;

FIG. 18 is a schematic structural diagram of a communication initiator provided by an embodiment of the present invention;

FIG. 19 is a schematic structural diagram of a third-party device provided by an embodiment of the present invention.

Detailed ways

In the embodiment of the present invention, the communication initiator may be a terminal (such as a traditional UE, a public safety UE, etc.), or a network-side device (such as a base station, etc.);

The communication target party can be a terminal (such as traditional UE, public safety UE, etc.), or a network-side device (such as a base station, etc.);

A third-party device is a communication device that can serve as a relay node between the communication initiator and the communication target. The third-party device can be a terminal (such as a traditional UE, a public safety UE, etc.), or a network-side device (such as a base station etc.); preferably, the third-party device is a public safety UE.

Further, the third-party device needs to meet the following conditions: it is adjacent to the communication initiator and the communication target respectively, and supports relay capability.

The relay capability involved in the embodiments of the present invention refers to the ability of a communication device to currently serve as a relay node between other communication devices except itself;

Among them, only when the communication device currently satisfies all the following conditions, the communication device can currently serve as a relay node between other communication devices except itself:

1. The communication device has a relay function capable of serving as a relay node between other communication devices except itself;

2. The network authorizes the communication device to act as a relay node between other communication devices except itself;

3. The relay function of the communication device has been activated, for example, the relay capability of the communication device is enabled by the user or the system.

Further, if the communication device does not satisfy at least one of the above conditions, the communication device does not support the relay capability.

Preferred application scenarios of the embodiments of the present invention include:

1. Both communication parties are terminals, and both communication parties are under network coverage and not adjacent to each other;

2. Both communication parties are terminals, at least one of them is not within the coverage of the network and the communication parties are not adjacent;

3. One of the communication parties is a terminal, and the other is a network-side device (such as a base station), and the terminal is not within the coverage of the network, that is, the communication parties are not adjacent.

Among them, in the first and second application scenarios, the non-proximity between the communication parties further includes the following situations: the communication initiator determines that it is not adjacent to the communication target party according to the result of the proximity relationship discovery; or, the communication parties have established proximity communication and The communication initiator determines that the received signal strength of the communication target party is less than the set strength threshold; or, both communication parties have established proximity communication and the communication initiator determines that the distance between itself and the communication target party is greater than the set distance threshold.

FIG. 7 shows an embodiment in which a public safety UE supporting a relay capability transfers data between two non-adjacent public safety UEs. The public safety UE1 is not adjacent to the public safety UE2, the public safety UE3 is adjacent to the public safety UE1, and the public safety UE3 is adjacent to the public safety UE2, and the public safety UE3 supports the relay capability. When the public security UE1 wants to communicate with the public security UE2, it finds that the public security UE2 is not adjacent to itself. At this time, the public security UE3 can act as a relay node for this communication, forwarding data between the public security UE1 and the public security UE2 .

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 8 , the implementation method of proximity communication provided by the embodiment of the present invention, the processing process on the side of the communication initiator includes:

Step 81: After determining that the communication target party is not adjacent to itself, the communication initiator sends a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party, and the relay path establishment request is used for Initiate the establishment process of the first communication path between the third-party device and the communication target party, and the relay path establishment request carries the identification information of the communication target party and the quality of service (Quality of Service, QoS) corresponding to the first communication path parameter;

Step 82: After determining that the first communication path has been successfully established and the second communication path established between itself and the third-party device, the communication initiator communicates with the communication target party through the established first communication path and the second communication path. communication.

In this embodiment of the present invention, the first communication path that is finally established may be a communication path that has been established between the third-party device and the communication target party and satisfies the QoS parameters corresponding to the first communication path, or it may be a communication path that the third-party device establishes according to the A new communication path established between itself and the communication target party following the path establishment request;

Similarly, the second communication path that is finally established may be a communication path that has been established between the communication initiator and the third-party device and satisfies the QoS parameters corresponding to the second communication path, or it may be a communication path that the communication initiator determines is different from the communication target party. After proximity, a new communication path is established between itself and the third-party device.

In implementation, for the second communication path that needs to be established between the communication initiator and the third-party device,

The communication initiator can first determine whether a communication path that can satisfy the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, and if so, the communication initiator will use the established communication path as the second communication path ; If not, the communication initiator initiates the establishment process of the second communication path to establish the second communication path;

The communication initiator may also directly initiate the process of establishing the second communication path without making a judgment, so as to establish the second communication path.

Specifically, the communication initiator may determine the second communication path according to any of the following methods:

Method 1. The communication initiator directly initiates the establishment process of the second communication path to establish the second communication path; the method further includes:

In method 1A, in step 81, when the communication initiator sends a relay path establishment request to the third-party device, it also initiates the process of establishing a second communication path through the relay path establishment request, and the communication initiator establishes a second communication path through the relay path establishment request. The request also carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path (such as path identification);

Correspondingly, the communication initiator determines whether the first communication path and the second communication path are established successfully according to the indication information carried in the received relay path establishment reply returned by the third-party device.

Preferably, if the second communication path is established successfully, the relay path establishment reply returned by the third-party device also carries the transmission resource (such as a path identifier) allocated by the third-party device for the second communication path;

If the establishment of the second communication path fails, the relay path establishment reply returned by the third party device also carries the failure reason.

Method 1B. After determining that the first communication path is established successfully, the communication initiator initiates the establishment process of the second communication path to the third-party device, specifically:

After the communication initiator determines that the first communication path is successfully established, it sends a connection establishment request to the third-party device, and the connection establishment request is used to request the establishment of a second communication path between itself and the third-party device, and the connection establishment request carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path (such as path identification); and

The communication initiator determines whether the second communication path is successfully established according to the indication information carried in the connection establishment reply returned by the third-party device, and obtains the third-party device from the connection establishment reply after determining that the second communication path is successfully established. Transmission resources allocated for the second communication path (eg path identifier).

Taking the establishment of a second communication path between a communication initiator and a third-party device as an example, the process of establishing a communication path between two communication devices is described, specifically: the communication initiator determines to initiate a second communication path to a third-party device. After the establishment process, first allocate transmission resources (such as path identifier, IP address (optional), etc.) for the second communication path, and then send a connection establishment request to the third-party device to request the establishment of the second communication path, and The establishment request carries the transmission resources allocated by itself for the second communication path; if the third-party device accepts the connection establishment request, it allocates transmission resources for the second communication path, and returns a connection establishment reply to the communication initiator, and the connection establishment reply Carry the indication information used to indicate the successful establishment of the second communication path and the transmission resources allocated by itself for the second communication path. At this time, the third-party device stores the transmission resources allocated by the communication initiator for the second communication path and The transmission resources allocated by itself for the second communication path; when the communication initiator receives the connection establishment reply, it determines that the second communication path is successfully established, and obtains the transmission resources allocated by the third-party device for the second communication path. At this time, The communication initiator saves the transmission resource allocated by itself for the second communication path and the transmission resource allocated by the third-party device for the second communication path, thus completing the establishment of the second communication path.

Preferably, if the establishment of the second communication path fails, the connection establishment reply returned by the third-party device also carries a failure reason.

Method 2. When the communication initiator determines that a communication path that can satisfy the QoS parameters corresponding to the second communication path has been established between itself and the third-party device, the established communication path is used as the second communication path and notifies the third-party device The transmission resource allocated by itself for the established communication path, so that the third-party device can determine the established communication path;

Wherein, the judging process performed by the communication initiator in this method (that is, judging whether a communication path that satisfies the QoS parameters corresponding to the second communication path has been established between itself and the third-party device) can be determined when it is not adjacent to the communication target party. Afterwards and before sending the relay path establishment request, it may also be executed after it is determined that the first communication path is established successfully.

Further, under this method, if the communication initiator first executes the judgment process, and then sends a relay path establishment request, the communication initiator also notifies the third-party device itself that the established communication path has been allocated through the relay path establishment request. For example, the transmission resource allocated by itself for the established communication path is carried in the relay path establishment request, so that the third-party device can determine the established communication path.

Further, under this method, if the communication initiator first sends a relay path establishment request, and then performs the judgment process, the communication initiator also needs to send a message to the third-party device to notify the third-party device that it is the established communication path. Allocated transmission resources to enable the third party device to determine the established communication path.

Method 3. When the communication initiator determines that the communication path established between itself and the third-party device cannot meet the QoS parameters corresponding to the second communication path, or when no communication path has been established between itself and the third-party device, initiate the second communication Path establishment process;

Wherein, the judging process performed by the communication initiator in this method (that is, judging whether a communication path that satisfies the QoS parameters corresponding to the second communication path has been established between itself and the third-party device) can be determined when it is not adjacent to the communication target party. Execute thereafter and before sending the relay path establishment request, or after determining that the first communication path is established successfully;

The method further includes the following two implementations:

Method 3A: If the communication initiator determines that none of the communication paths established between itself and the third-party device can satisfy the QoS parameters corresponding to the second communication path after determining that it is not adjacent to the communication target party and before sending a relay path establishment request , or no communication path has been established between itself and a third-party device, then:

When the communication initiator sends a relay path establishment request to the third-party device, it also initiates the establishment process of the second communication path through the relay path establishment request, and the communication initiator also carries its own Identification information, QoS parameters corresponding to the second communication path, and transmission resources (such as path identifiers) allocated by itself for the second communication path;

Correspondingly, the communication initiator determines whether the first communication path and the second communication path are established successfully according to the instruction information carried in the relay path establishment reply returned by the received third-party device, and after determining that the second communication path is established successfully , from the relay path establishment reply, acquire the transmission resources allocated by the third-party device for the second communication path.

Preferably, if the establishment of the second communication path fails, the relay path establishment reply returned by the third party device also carries a failure reason.

Method 3B. If the communication initiator determines that the established communication path between itself and the third-party device cannot satisfy the QoS parameters corresponding to the second communication path after determining that the first communication path is successfully established, or there is no communication between itself and the third-party device. To establish any communication paths, then:

The communication initiator sends a connection establishment request to the third-party device, the connection establishment request is used to request the establishment of a second communication path between itself and the third-party device, and the connection establishment request carries its own identification information, the second communication path corresponds to QoS parameters and the transmission resources allocated by itself for the second communication path; and the communication initiator determines whether the second communication path is successfully established according to the indication information carried in the connection establishment reply returned by the third-party device, and determines whether the second communication path After the path is established successfully, the transmission resource allocated by the third-party device for the second communication path is obtained from the connection establishment reply.

Preferably, if the establishment of the second communication path fails, the connection establishment reply returned by the third-party device also carries a failure reason.

It should be noted that, if both the first communication path and the second communication path are successfully established, the communication initiator executes step 83; if the first communication path or the second communication path fails to be established, the communication initiator terminates the third-party device The relay path establishment process.

In addition, in the embodiment of the present invention, since both the first communication path and the second communication path are used to transmit communication data between the communication initiator and the communication target, the QoS parameters corresponding to the first communication path and the second The QoS parameters corresponding to the communication paths are the same.

In the embodiment of the present invention, the specific implementation process of the communication initiator acquiring a third-party device that can serve as a relay node between itself and the communication target party will be described below.

In implementation, the communication initiator obtains a third-party device that can serve as a relay node between itself and the communication target party according to the following steps:

The communication initiator sends a relay request to a neighboring communication device adjacent to itself, and the relay request carries the identification information of the communication target party;

The communication initiator receives the relay reply returned by the adjacent communication device, and the relay reply carries indication information for indicating whether the adjacent communication device can serve as a relay node between the communication initiator and the communication target.

As a specific implementation, the communication initiator obtains a third-party device that can serve as a relay node between itself and the communication target party according to the following steps:

The communication initiator selects a neighboring communication device from all neighboring communication devices according to the preset priority of each neighboring communication device in order of priority from high to low;

For the currently selected adjacent communication device, the communication initiator sends a relay request to the adjacent communication device, and performs different processing according to the content of the received relay reply:

If the relay reply returned by the adjacent communication device carries the first indication information, the communication initiator determines that the adjacent communication device can serve as a relay node between itself and the communication target party, that is, the adjacent communication device is a third-party device;

If the relay reply returned by the adjacent communication device carries the second indication information, the communication initiator determines that the adjacent communication device cannot be used as a relay node between itself and the communication target party, and the order of priority is from high to low , select the next adjacent communication device, and execute the above relay request process.

Further, if the adjacent communication device currently selected by the communication initiator is the last adjacent communication device, and the relay reply returned by the adjacent communication device carries the second indication information, the communication initiator determines that the adjacent communication device cannot be used as There is no relay node between the communication target parties, that is, there is no third-party device. At this time, the communication initiator determines that the adjacent communication via the relay node has failed, and ends the process.

Preferably, in this way, the communication initiator has already known the adjacent communication devices adjacent to itself before initiating the process of establishing the relay path.

Preferably, in this manner, the communication initiator determines the priority of each adjacent communication device according to the received signal strength of each adjacent communication device;

Specifically, the communication initiator forms a priority list according to the received signal strength of each adjacent communication device, and the priority list is composed of identification information of each adjacent communication device, and the priority of the identification information in the list is higher Higher indicates that the signal strength of the adjacent communication device corresponding to the identification information received by the communication initiator is stronger.

In implementation, in this manner, for the currently determined third-party device, the communication initiator executes step 81, which specifically includes the following two results:

If the first communication path is successfully established, the communication initiator executes steps 82 to 83;

If the establishment of the first communication path fails, the communication initiator selects the next adjacent communication device in order of priority from high to low, and executes a relay request process.

It should be noted that in this mode, the communication initiator sequentially executes the relay request process and the relay path establishment process including steps 81 to 82 for the currently selected adjacent communication device. Therefore, the third-party device determined by the communication initiator The number is at most one.

As another specific implementation manner, the communication initiator obtains a third-party device that can serve as a relay node between itself and the communication target party according to the following steps:

The communication initiator sends relay requests to all adjacent communication devices; preferably, the communication initiator may send relay requests to all adjacent communication devices in parallel, or may send relay requests to each adjacent communication device in turn; and

The communication initiator receives the relay reply returned by each adjacent communication device, and according to the indication information carried in each relay reply, determines the adjacent communication device that can be used as a relay node between itself and the communication target party, that is, a third-party device .

Preferably, in this way, the communication initiator has already known the adjacent communication devices adjacent to itself before initiating the process of establishing the relay path.

It should be noted that in this way, the communication initiator first performs a relay request process for all nearby communication devices to determine a third-party device among all nearby communication devices that can serve as a relay node between itself and the communication target party, and then Then, the relay path establishment process including steps 81 to 82 is executed for the third-party device. Therefore, the number of third-party devices determined by the communication initiator is at least one.

Preferably, if the determined number of third-party devices is at least two, then: in step 81, sending a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party to the communication initiator includes:

The communication initiator selects a third-party device from all the third-party communication devices according to the preset priority of each third-party device in order of priority from high to low, and sends a message to the currently selected third-party device Relay path establishment request.

Preferably, in this manner, the communication initiator can determine the priority of each third-party device according to the received signal strength of the third-party device;

Specifically, the communication initiator forms a priority list according to the received signal strength of each third-party device, the priority list is composed of identification information of each third-party device, and the priority of the identification information in the list is higher Higher, indicating that the signal strength of the third-party device corresponding to the identification information received by the communication initiator is stronger.

Further, in this manner, for the currently selected third-party device, the communication initiator executes step 81, which specifically includes the following two results:

If both the first communication path and the second communication path are successfully established, the communication initiator executes steps 82 to 82;

If the establishment of the first communication path or the second communication path fails, the communication initiator selects the next third-party device in descending order of priority, and re-executes steps 81 to 82 .

Further, if the third-party device currently selected by the communication initiator is the third-party device with the lowest priority, and the result of executing step 81 is that the establishment of the first communication path or the second communication path fails, then the communication initiator determines that this time via Proximity communication of the relay node fails, and processing ends.

As a preferred manner of the above two specific implementation manners, the communication initiation direction sends a relay request to a neighboring communication device adjacent to itself, further including:

The communication initiator sends a relay request to an adjacent communication device that is adjacent to itself and supports a relay capability.

For the first implementation, the communication initiator selects a neighboring communication device from all neighboring communication devices that support the relay capability in order of priority from high to low, and executes the relay request process and the relay path in sequence. build process;

Preferably, before initiating the relay path establishment process, the communication initiator has already known the adjacent communication devices adjacent to itself and whether they support the relay capability;

Preferably, the communication initiator determines the priority of each adjacent communication device supporting relay capability according to the received signal strength of each adjacent communication device supporting relay capability.

For the second implementation, the communication initiator executes a relay request process to all neighboring communication devices that support the relay capability, so as to determine which of all the neighboring communication devices that support the relay capability can serve as a link between itself and the communication target. Third-party equipment for relay nodes;

Preferably, before initiating the process of establishing the relay path, the communication initiator has already known the adjacent communication devices adjacent to itself and whether they support the relay capability.

In the implementation of the present invention, when the communication initiator initiates the relay request process, the communication device adjacent to the communication initiator performs the following steps when receiving the relay request sent by the communication initiator:

Judging whether it can serve as a relay node between the communication initiator and the communication target party, and returning a relay reply to the communication initiator, the relay reply carries information indicating whether it can serve as the communication initiator and the communication target party The indication information of the intermediate relay nodes.

In implementation, the communication device judges whether it can serve as a relay node between the communication initiator and the communication target, including:

If it supports relay capability and it is adjacent to the communication target party, the communication device determines that it can currently serve as a relay node between the communication initiator and the communication target party;

If it does not support the relay capability, or it is not adjacent to the communication target party, the communication device determines that it cannot currently serve as a relay node between the communication initiator and the communication target party.

Preferably, after the communication device determines that it supports the relay capability and is adjacent to the communication target party, it judges whether it can serve as a relay node between the communication initiator and the communication target party according to preset judgment conditions;

When the judgment condition is met, the communication device determines that it can serve as a relay node between the communication initiator and the communication target;

When the judging condition is not met, the communication device determines that it cannot serve as a relay node between the communication initiator and the communication target.

In implementation, the pre-set judgment conditions include one or a combination of the following:

Pre-set user preferences, own current processing load, and the strength of the signal received by itself from the communication target party.

For example, the preset user preference may indicate that the communication device can be used as a relay node between any communication parties, or may indicate that the communication device can be used as a relay node between a designated communication initiator and a designated communication target party, It may also indicate that the communication device cannot serve as a relay node for any two communication parties.

For example, the communication device judges whether it can serve as a relay node between the communication initiator and the communication target according to its current processing load, specifically including:

If the current processing load of the communication device is too heavy, that is, the current processing load of the communication device exceeds the set threshold (such as the communication device has connected more than the set number of communication devices; another example, the current CPU usage of the communication device rate exceeds the set threshold), then it is determined that it cannot be used as a relay node between the communication initiator and the communication target party;

If the current processing load of the communication device does not exceed the set threshold, it is determined that it can serve as a relay node between the communication initiator and the communication target.

For example, the communication device judges whether it can serve as a relay node between the communication initiator and the communication target according to the strength of the signal it receives from the communication target, including:

If the communication device receives the signal strength of the communication target party not less than the set threshold, it determines that it can serve as a relay node between the communication initiator and the communication target party;

If the communication device receives the signal strength of the communication target party less than the set threshold, it determines that it cannot serve as a relay node between the communication initiator and the communication target party.

In the embodiment of the present invention, the implementation process for the communication initiator to obtain the neighboring communication devices adjacent to itself will be described below.

In an implementation, the communication initiator obtains the neighboring communication devices adjacent to itself in the following manner:

Mode A: The communication initiator sends a first request message by broadcast to request each adjacent communication device to return to itself the feedback information carrying the identification information of the adjacent communication device, and the first request message carries the identification of the communication initiator information;

If the communication initiator receives the feedback information, the communication initiator determines that the communication device corresponding to the identification information carried in the received feedback information is a neighboring communication device.

In mode A, after the communication initiator sends the first request message, the communication device adjacent to the communication initiator can receive the first request message sent by it, and after receiving the first request message, send the communication The initiator returns feedback information, which carries its own identification information; communication devices not adjacent to the communication initiator will not receive the first request message sent by it.

Preferably, the communication initiator stores the identification information of each adjacent communication device locally after receiving the feedback information returned by the adjacent communication device; for example, the communication initiator stores the acquired identification information of each adjacent communication device in the adjacent relationship list.

Further, in mode A, if the communication initiator also needs to know whether each neighboring communication device supports the relay capability, the first request message is also used to request each neighboring communication device to indicate in the returned feedback information whether the neighboring communication device The relay capability is supported so that the communication originator can know whether each neighboring communication device supports the relay capability.

Specifically, a nearby communication device may indicate whether it supports the relay capability in the following manner:

Method 1. If the adjacent communication device supports the relay capability, the feedback information returned to the communication initiator carries its own identification information and indication information for indicating that the adjacent communication device supports the relay capability; if the adjacent communication device If the relay capability is not supported, only its own identification information is carried in the feedback information returned to the communication initiator; or,

Method 2. If the adjacent communication device supports the relay capability, the feedback information returned to the communication initiator carries its own identification information and indication information for indicating that the adjacent communication device supports the relay capability; if the adjacent communication device If the relay capability is not supported, the feedback information returned to the communication initiator carries its own identification information and indication information for indicating that the adjacent communication device does not support the relay capability.

Preferably, the communication initiator stores the identification information of each adjacent communication device and whether the adjacent communication device supports relay capability after acquiring each adjacent communication device and whether it supports relay capability;

Specifically, if the nearby communication device supports the relay capability, the stored information of the nearby communication device includes the identification information of the nearby communication device and indication information indicating that the nearby communication device supports the relay capability; if the nearby If the communication device does not support the relay capability, the stored information of the adjacent communication device only includes the identification information of the adjacent communication device; or,

If the nearby communication device supports the relay capability, the stored information of the nearby communication device includes the identification information of the nearby communication device and indication information indicating that the nearby communication device supports the relay capability; if the nearby communication device does not If the relay capability is supported, the stored information of the adjacent communication device includes identification information of the adjacent communication device and indication information for indicating that the adjacent communication device does not support the relay capability.

Mode B. The communication initiator sends a second request message by broadcasting. The second request message is used to request the designated communication device to return feedback information carrying its own identification information after receiving the second request message, and the second request The message carries the identification information of the communication initiator and the identification information of the designated communication device;

If the communication initiator receives the feedback information and the identification information carried in the feedback information is the same as the identification information of the designated communication device, the communication initiator determines that it is adjacent to the designated communication device;

If the communication initiator does not receive any feedback information, or receives feedback information and the identification information carried in the feedback information is different from the identification information of the designated communication device, the communication initiator determines that it is not adjacent to the designated communication device.

In mode B, after the communication initiator sends the second request message, each adjacent communication device of the communication initiator will receive the second request message sent by it, and each adjacent communication device will receive the second request message after receiving the second request message. , judging whether the self-identification information is the same as the identification information of the specified communication device carried in the second request message, and performing corresponding processing according to the judgment result:

If the self-identification information is the same as the identification information of the specified communication device carried in the second request message, the adjacent communication device returns feedback information to the communication initiator, and carries self-identification information in the feedback information;

If the identification information of itself is different from the identification information of the specified communication device carried in the second request message, the adjacent communication device discards the broadcast message.

Preferably, after receiving the feedback information returned by the designated communication device, the communication initiator stores the identification information of the designated communication device locally; Identification information is stored in a neighbor list.

Further, in mode B, if the communication initiator also needs to know whether each neighboring communication device supports the relay capability, the second request message is also used to request the designated communication device to indicate in the returned feedback information whether the designated communication device supports Relay capability, so that the communication initiator can know whether each specified communication device supports the relay capability; wherein, the specified communication device can use mode 1 or mode 2 to indicate whether it supports the relay capability.

Preferably, the communication initiator stores the identification information of each nearby communication device and whether the nearby communication device supports the relay capability after acquiring each nearby communication device and whether it supports the relay capability.

In the embodiment of the present invention, the communication initiator can also obtain a third-party device that can serve as a relay node between itself and the communication target party through the following methods:

The communication initiator sends a request message by broadcasting to request the adjacent communication device that can serve as a relay node between itself and the communication target to return feedback information carrying its own identification information, and the request message carries the identification information of the communication initiator and the identification information of the communication target party;

If the reply message returned by the neighboring communication device is received, the communication initiator determines that the neighboring communication device can serve as a relay node between itself and the communication target (that is, the neighboring communication device is a third-party device), and the reply message carries Identification information of the proximity communication device;

If the communication initiator does not receive any reply message, it determines that there is currently no adjacent communication device that can serve as a relay node between itself and the communication target party (that is, there is no third-party device currently), and ends the process.

Preferably, the communication initiator stores the identification information of the adjacent communication device carried in the received reply message, so that the adjacent communication devices corresponding to the locally stored identification information are found by the communication initiator and can serve as the communication initiator and the communication target third-party devices between relay nodes.

Preferably, the communication initiator forms a priority list according to the received signal strength of each adjacent communication device that can be used as a relay node between the communication initiator and the communication target party, and the list is composed of each third-party device. Composed of identification information, the higher the priority of the identification information in the list, the stronger the signal strength of the third-party device corresponding to the identification information received by the communication initiator.

It should be noted that a communication device adjacent to the communication initiator (or a communication device adjacent to the communication initiator and supporting the relay capability) can determine whether it is adjacent to the communication target according to the result of the proximity discovery initiated by itself, wherein, The process of proximity discovery is similar to the process of proximity discovery on the side of the communication initiator, and may refer to the above method A and method B.

In implementation, the communication device adjacent to the communication initiator (or the communication device adjacent to the communication initiator and supporting the relay capability) and the communication target party include the following situations:

If both parties are terminals, it includes: the communication device has not established proximity communication with the communication target party, and the communication device determines that it is currently adjacent to the communication target party according to the result of the proximity relationship discovery; or, the communication device and the communication target party Proximity communication has been established, and it is currently in proximity to the communication target;

If one of the two parties is a network-side device and the other is a terminal, it includes: no communication connection has been established between the communication device and the communication target party, and the communication device executes the establishment of a communication connection with the communication target party (such as a terminal and a base station) During the RRC connection between the terminal and the base station), the connection is successfully established; or, there is a communication connection between the communication device and the communication target (such as the RRC connection between the terminal and the base station), and the terminal is within the network coverage of the network side device.

In implementation, the communication device adjacent to the communication initiator (or the communication device adjacent to the communication initiator and supporting the relay capability) is not adjacent to the communication target party includes the following situations:

If both parties are terminals, it includes: the communication device has not established proximity communication with the communication target party, and the communication device determines that it is not currently adjacent to the communication target party according to the result of the proximity relationship discovery; or, the communication device and the communication target party The party has established proximity communication and the communication device determines that it is not currently adjacent to the communication target party according to the result of proximity relationship discovery; or, the communication device and the communication target party have established proximity communication and the communication device determines that the received communication target party The signal strength of the communication device is less than the set strength threshold; or, the communication device has established proximity communication with the communication target and the communication device determines that the distance between itself and the communication target is greater than the set distance threshold;

If one of the two parties is a network-side device and the other is a terminal, it includes: no communication connection has been established between the communication device and the communication target party, and the communication device executes the establishment of a communication connection with the communication target party (such as a terminal and a base station) During the radio resource control (Radio Resource Control, RRC) connection) between the communication device, the connection establishment fails; or, there is a communication connection between the communication device and the communication target (such as the RRC connection between the terminal and the base station), and then the terminal The network coverage of the network side device is left.

In the embodiment of the present invention, the identification information of the communication device (such as the communication initiator, communication target party, adjacent communication device, etc.) has global uniqueness, and can be the identification information defined in the existing 3GPP protocol, or it can be a newly defined special identification information).

Based on the above embodiment, as shown in FIG. 9, in the implementation method of proximity communication provided by the embodiment of the present invention, the processing process on the third-party device side includes:

Step 91: The third-party device receives the relay path establishment request sent by the communication initiator, and the relay path establishment request carries at least the identification information of the communication target party and the first request to be established between the third-party device and the communication target party. QoS parameters corresponding to the communication path;

Step 92, the third-party device determines the first communication path established between itself and the communication target party, and the second communication path established between itself and the communication initiator;

Step 93: The third party device forwards data between the communication initiator and the communication target through the established first communication path and the second communication path.

In implementation, in step 91, after the third-party device receives the relay path establishment request, it can directly execute step 92, and can also judge whether it accepts the relay path establishment request according to the set judgment conditions, specifically:

If accepted, then execute step 92;

If it is not accepted, a relay path establishment reply is sent to the communication initiator, and carries indication information and a failure reason for indicating that the first communication path establishment fails (the failure reason is optional information).

Specifically, the pre-set judgment conditions include one or a combination of the following:

Pre-set user preferences, own current processing load, and the strength of the signal received by itself from the communication device.

In implementation, in step 92, the third-party device determines the first communication path, including:

When the third-party device receives the relay path establishment request, it directly initiates the establishment process of the first communication path; or,

When the third-party device receives the relay path establishment request, it first judges whether a communication path that can satisfy the QoS parameters corresponding to the first communication path has been established between itself and the communication target party, and then determines the first communication path, specifically:

When determining that a communication path capable of satisfying the QoS parameter corresponding to the first communication path has been established between itself and the communication target party, the third-party device regards the established communication path as the first communication path; further, the third-party device Indicating that the first communication path is established successfully in the relay path establishment reply returned to the communication initiator;

When it is determined that the communication path established between itself and the communication target party cannot meet the QoS parameters corresponding to the first communication path, or no communication path has been established between itself and the communication target party, the third-party device initiates the establishment of the first communication path process.

In implementation, in step 92, the third-party device initiates the establishment process of the first communication path, including:

The third-party device sends a first connection establishment request to the communication target party, the first connection establishment request is used to request establishment of a first communication path with the communication target party, and the first connection establishment request carries its own identification information, the first communication The QoS parameters corresponding to the path and the transmission resources (such as the path identifier) allocated by itself for the first communication path; and

The third-party device determines whether the first communication path is successfully established according to the indication information in the first connection establishment reply returned by the communication target party.

Preferably, the first connection establishment request also carries identification information of the communication initiator, so that the communication target party can know the information of the communication device with which it will communicate.

In implementation, after receiving the first connection establishment request, the communication target party judges whether it can accept the first connection establishment request according to the preset judgment conditions, specifically:

If it accepts the first connection establishment request, the communication target party will return the first connection establishment reply to the third-party device to carry indication information indicating that the first communication path has been successfully established and the first communication path allocated by itself. transmission resources (such as path identification);

If the first connection establishment request is not accepted by itself, the communication target party carries indication information indicating that the establishment of the first communication path fails in the first connection establishment reply returned to the third-party device; preferably, the first The connection establishment reply also carries the reason why the first communication path fails to be established.

In implementation, the pre-set judgment conditions include one or a combination of the following:

Pre-set user preferences, own current processing load, and the strength of the signal received by itself from the communication device.

For example, the preset user preferences may indicate that the communication target party can establish a communication path with any communication device, or indicate that the communication target party can establish a communication path with a specified communication device, or indicate that the communication target party cannot establish a communication path with a specified communication device. Either communication device establishes a communication path.

For example, the communication target party judges whether it accepts the connection establishment request according to its current processing load, including:

If the current processing load of the communication target party is too heavy, that is, the current processing load of the communication target party exceeds the set threshold (such as the communication target party has connected more than the set number of communication devices; If the CPU usage exceeds the set threshold), it determines that it cannot accept the connection establishment request;

If the current processing load of the communication target party does not exceed the set threshold, it determines that it can accept the connection establishment request.

It should be noted that if the current processing load of the communication target party is too heavy, if the communication target party accepts this connection establishment request at this time, the processing performance of the communication target party will be greatly affected.

For example, the communication target party judges whether it can accept the connection establishment request according to the strength of the signal it receives from the third-party device, specifically including:

If the communication target party receives the signal strength of the third-party device not less than the set threshold, it determines that it can accept the connection establishment request;

If the communication target party determines that the strength of the signal received by itself from the third-party device is less than the set threshold, it cannot accept the current connection establishment request.

It should be noted that if the signal strength received by the communication target party from the third-party device is lower than the set threshold, if the communication target party accepts the connection establishment request at this time, it will easily lead to unstable data transmission.

In implementation, if the relay path establishment request received by the third-party device also carries the identification information of the communication initiator, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by the communication initiator for the second communication path, then the first The third-party device determines that the second communication path is established, including:

After the first communication path is successfully established, it allocates transmission resources for the second communication path between itself and the communication initiator, and carries the information used to indicate the establishment of the second communication path in the relay path establishment reply returned to the communication initiator Success indication information and the transmission resources allocated by itself for the second communication path.

In an implementation, if the communication initiator directly sends a second connection establishment request to the third-party device, the method further includes:

The third-party device receives the second connection establishment request, and the second connection establishment request carries identification information of the communication initiator, QoS parameters corresponding to the second communication path, and transmission resources allocated by the communication initiator for the second communication path (such as path logo);

If the third-party device accepts the second connection establishment request, the third-party device returns the second connection establishment reply to the communication initiator to carry indication information indicating that the second communication path is established successfully and the transmission allocated by itself for the second communication path. resource;

If the third-party device does not accept the second connection establishment request, the third-party device carries indication information for indicating that the establishment of the second communication path fails in the second connection establishment reply.

Preferably, if the establishment of the second communication path fails, the third-party device carries indication information for indicating that the establishment of the second communication path fails and a reason for the failure in the second connection establishment reply.

In implementation, when the third-party device receives the second connection establishment request, it may directly accept the second connection establishment request, or may judge whether to accept the second connection establishment request according to a set judgment condition.

Specifically, the pre-set judgment conditions include one or a combination of the following:

Pre-set user preferences, own current processing load, and the strength of the signal received by itself from the communication device.

It should be noted that if the relay path establishment request received by the third party does not carry the relevant information used to request the establishment of the second communication path (such as the identification information of the communication originator, the QoS parameters corresponding to the second communication path, the communication initiation the transmission resources allocated by the party for the second communication path, etc.), then the third-party device returns a relay path establishment reply to the communication initiator after completing the establishment process of the first communication path, and indicates in the relay path establishment reply Whether the first communication path is established successfully;

If the relay path establishment request received by the third party carries relevant information for requesting establishment of the second communication path, after the third party device completes the establishment process of the first communication path and the second communication path, it sends a request to the communication initiator Returning a relay path establishment reply, and indicating whether the first communication path and the second communication path are successfully established in the relay path establishment reply.

In implementation, if the communication initiator determines that the second communication path is an established communication path between itself and the third-party device, then:

The third-party device determines the established communication path according to the received notification sent by the communication initiator; or,

The third-party device determines the established communication path according to the received relay path establishment request.

It should be noted that, for each group of communication parties (communication initiator and communication target party), as the relay node between the communication parties, the third-party device determines the first communication established between itself and the communication target party After the path and the second communication path established between itself and the communication initiator, store the corresponding relationship between each group of first communication paths and second communication paths, so that when any communication initiator passes through any first communication path After the data is sent, the corresponding second communication path can be found, and the data is forwarded to the corresponding communication target party.

The implementation method of the proximity communication provided by the present invention will be described in detail from the interaction between the communication initiator, the communication target party and the communication device adjacent to the communication initiator. The following embodiments will all take the terminal as the communication initiator as an example for illustration. The case where the communication initiator is a network-side device (such as a base station) is similar, and examples are not described here.

Embodiment 1. The proximity communication implementation method provided by this embodiment includes: a relay request process and a relay path establishment process;

1. Refer to Figure 10 for the relay request process initiated by a communication device that is adjacent to itself and supports relay capabilities, and includes the following steps:

Step 101, the communication initiator sends a relay request message to a communication device that is adjacent to itself and supports relay capability, and the parameter carried in the message is the identification information of the communication target party;

Step 102. After receiving the relay request message, the communication device judges whether it can serve as a relay node between the communication initiator and the communication target, and returns a relay reply message to the communication initiator; specifically:

If the communication device determines that it cannot act as a relay node between the communication initiator and the communication target party (for example, the communication device is not adjacent to the communication target party, or the communication device is adjacent to the communication target party but it receives the communication target party The weak signal strength of the communication device may cause the communication link to be unstable, or the processor load of the communication device is too high to establish a new communication path), then the parameter carried by the communication device in the returned relay reply message is No; Otherwise, the parameter carried is yes.

Correspondingly, after receiving the relay reply message returned by the communication device, the communication initiator performs different operations according to the parameters carried in the relay reply message; specifically:

If the parameter carried in the relay reply message is yes, it indicates that the communication device can serve as a relay node between itself and the communication target party (that is, the communication device is a third-party device), and the communication initiator initiates the establishment of a relay path process;

If the parameter carried in the relay reply message is no, it indicates that the communication device cannot be used as a relay node between itself and the communication target party, and the communication initiator selects another communication device that is adjacent to itself and supports relay capabilities to re- Initiate the relay request process.

2. The relay path establishment process initiated by the communication initiator to the third-party device is shown in Figure 11, including the following steps:

Step 111, the communication initiator sends a relay path establishment request message to the third-party device, and the parameters carried in the relay path establishment request message are the identification information of the communication target party and the QoS parameters corresponding to the first communication path;

Step 112: After receiving the relay path establishment request message, the third-party device initiates a communication path establishment process (that is, the establishment process of the first communication path), specifically:

If the third-party device and the communication target party have established a communication path that can satisfy the QoS parameter corresponding to the first communication path, then use the established communication path as the first communication path;

If the established communication path between the third-party device and the communication target party cannot meet the QoS parameters corresponding to the first communication path, or no communication path has been established, initiate the process of establishing the first communication path to the communication target party, including wireless resource negotiation And allocation, IP address allocation (optional) and other processes;

Step 113: The third-party device returns a relay path establishment reply message to the communication initiator according to the establishment result of the first communication path, and the parameter carried in the relay path establishment reply message is success or failure.

If the parameter is successful, it indicates that the first communication path has been established between the communication device and the communication target party; if the parameter is failure, it indicates that the establishment of the first communication path between the communication device and the communication target party fails.

Step 114, after the communication initiator receives the relay path establishment reply message, it performs different operations according to the parameters carried in the message; specifically:

If the parameter carried in the relay path establishment reply message is successful, it indicates that the first communication path to the communication target party has been successfully established through the communication device, and the communication initiator initiates the second communication between itself and the third party device Path establishment process;

If the parameter carried in the relay path establishment reply message is failure, it indicates that the communication path has failed to be established through the communication device, so the communication device cannot be used as the relay node for this communication, and the communication initiator chooses another one that is adjacent to itself and supports The relay-capable communication device re-initiates the relay request procedure.

Wherein, the communication initiator initiates the establishment process of the second communication path between itself and the third-party device, specifically:

When the communication initiator determines that a communication path capable of satisfying the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, the established communication path is used as the second communication path;

When the communication initiator determines that the established communication path between itself and the third-party device cannot meet the QoS parameters corresponding to the second communication path, or when no communication path has been established between itself and the third-party device, it sends a connection establishment message to the third-party device. Request, the connection establishment request carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources (such as path identification) allocated by itself for the second communication path; and according to the connection establishment reply returned by the third-party device The carrying instruction information determines whether the second communication path is established successfully.

Further, in step 112, the process of establishing a new communication path (that is, the first communication path) between the third-party device and the communication target party, as shown in FIG. 12 , includes:

Step 121, the third-party device sends a connection establishment request message to the communication target party, and the parameters carried are the identification information of the communication initiator (optional), its own identification information, the QoS parameters corresponding to the first communication path, and the self-based The transmission resources allocated for communication (such as the identity allocated by itself for the first communication path established this time);

Step 122. After receiving the connection establishment request message, the communication target party judges whether to accept the connection establishment request. According to different judgment results, the communication target party performs different operations, specifically:

If not accepted, the communication target returns a connection establishment reply message to the third-party device, and the parameters carried are failure and the reason for failure (optional);

If accepted, the communication target returns a connection establishment reply message to the third-party device, and the parameters carried are success and the transmission resource allocated by the communication peer for this communication (for example, the communication target is the first communication path established this time) assigned ID).

Embodiment 2. This embodiment is an optimization of Embodiment 1. When there are multiple third-party devices adjacent to the communication initiator and supporting the relay capability, the method of this embodiment may be adopted.

In this embodiment, the communication initiator searches for a communication device that supports the relay capability in the locally stored information of the communication devices that are adjacent to itself, and then the communication initiator, based on the received communication that is adjacent to itself and supports the relay capability, The strength of the signal strength of the device forms a priority list, which is composed of the identification information of the above-mentioned communication devices that are adjacent to the communication initiator and support relay capabilities, wherein the stronger the signal strength received by the communication initiator , the higher the priority of the identification information of the corresponding communication device in the priority list;

If the priority list is empty, that is, the communication device adjacent to the communication initiator does not support the relay capability, so the communication initiator cannot communicate with the non-adjacent communication target party, and the communication initiator ends the relay path establishment process .

If the priority list is not empty, the communication initiator will execute the relay request process and relay path establishment process sequentially from the communication device with the highest priority according to the priority order of each communication device in the priority list until the communication initiates Until the party finds a relay node that can serve as this communication, or until the communication initiator and the communication device with the lowest priority in the priority list perform the above process and does not find a relay node that can serve as this communication.

The implementation method of proximity communication provided in this embodiment refers to 13 for details, and includes the following steps:

Step 131: The communication initiator sends a relay request message to a communication device that is adjacent to itself and supports relay capability, and the parameter carried in the relay request message is the identification information of the communication target party;

Step 132: After receiving the relay request message, the communication device first judges whether it can serve as a relay node between the communication initiator and the communication target, and then returns a relay reply message to the communication initiator;

Among them, according to whether the communication device can be used as a relay node between the communication initiator and the communication target party, the parameters carried in the relay reply message are different; specifically:

If the communication device cannot be used as a relay node between the communication initiator and the communication target party, the parameter carried in the relay reply message is no; if the communication device can be used as a relay node between the communication initiator and the communication target party node, the parameter carried in the relay reply message is Yes.

Step 133. After the communication initiator receives the relay reply message, according to the different parameters carried in the relay reply message, the communication initiator performs different operations; specifically:

If the parameter carried in the relay reply message is no, the communication initiator judges whether the priority of the communication device is the lowest in the priority list. Depending on the judgment result, the communication initiator performs different operations: if yes, it indicates communication The initiator fails to find a relay node between itself and the communication target, and ends the processing; if not, the communication initiator selects the next communication device from the priority list in order of priority from high to low , and initiate a relay request process to the currently selected communication device;

If the parameter carried in the relay reply message is yes, the communication initiator sends a relay path establishment request message to the communication device (that is, the third-party device), and the parameter carried in the relay path establishment request message is the identification information of the communication target party.

Step 134, after the communication device receives the relay path establishment request message, it first judges whether a communication path has been established between it and the communication target party, if established, then directly execute step 135; The process of establishing a communication path between communication targets, specifically including wireless resource negotiation and allocation, IP address allocation (optional), and other processes.

Step 135, the communication device returns a relay path establishment reply message to the communication initiator according to the result of establishing a communication path between it and the communication target party, and the parameter carried in the relay path establishment reply message is success or failure; specifically:

If the parameter carried in the relay path establishment reply message is successful, it indicates that a communication path has been established between the communication device and the communication target party;

If the parameter carried in the relay path establishment reply message is failure, it indicates that the establishment of the communication path between the communication device and the communication target party fails.

Correspondingly, after the communication initiator receives the relay path establishment reply message, the communication initiator performs different operations according to the parameters carried in the relay path establishment reply message; specifically:

If the parameter carried in the relay path establishment reply message is successful, it indicates that the communication initiator has found a relay node that can serve as this communication;

If the parameter carried in the relay path establishment reply message is failure, the communication initiator judges whether the priority of the communication device is the lowest in the priority list. Depending on the judgment result, the communication initiator performs different operations, specifically: if Yes, it means that the communication initiator has not found a relay node that can serve as this communication, and ends the processing; if not, the communication initiator selects the next communication from the priority list in order of priority from high to low device, and initiate a relay request process and a relay path establishment process to the currently selected communication device.

Embodiment 3. This embodiment is also an optimization of Embodiment 1. When there are multiple communication devices that are adjacent to the communication initiator and support relay capabilities, the method of this embodiment may also be used.

In this embodiment, the communication initiator searches for a communication device that supports the relay capability from the locally stored information of the communication devices that are adjacent to itself, and then initiates the communication to each communication device that is adjacent to itself and supports the relay capability. In the relay request process, among the communication devices that support the relay capability, the communication devices that can serve as the relay nodes between themselves and the communication target party (that is, the communication devices that return the relay reply message with the parameter Yes);

The communication initiator forms a priority list according to the received signal strength of the communication device that can serve as a relay node between itself and the communication target party. Composed of the identification information of the communication equipment of the relay node, the higher the priority of the identification information in the list, the stronger the signal strength of the communication equipment represented by the identification information received by the communication initiator; further, if the priority If the list is empty, that is, there is no communication device that can serve as a relay node between itself and the communication target, the communication initiator ends the processing; if the priority list is not empty, the communication initiator proceeds from high to low priority Select a communication device from the priority list, and execute the following relay path establishment process for the currently selected communication device:

The communication initiator performs different operations according to the result of the relay path establishment process; specifically:

If the relay path establishment process is successful (that is, the first communication path and the second communication path are successfully established), the communication device is the relay node selected by the communication initiator to act as the communication;

If the relay path establishment process fails (that is, the establishment of the first communication path and/or the second communication path fails), the communication initiator judges whether the priority of the communication device in the priority list is the lowest, and if so, it indicates no There is a relay node that can act as this communication, and the communication initiator ends the processing; if not, the communication initiator selects the next communication device from the priority list in order of priority from high to low, and sends the current selected The communication device initiates a process of establishing a relay path.

Embodiment 4. This embodiment introduces a process for a communication initiator (UE1 in this embodiment) to obtain a communication device adjacent to itself and whether it supports a relay capability. The scene of this embodiment is shown in Figure 14, where:

The communication devices adjacent to UE1 include UE2, UE3 and UE4;

The communication devices adjacent to UE2 include UE1 and UE5;

The communication devices supporting the relay capability are UE1, UE2, and UE4.

In this embodiment, the process for UE1 to acquire the communication devices adjacent to itself and whether it supports relay capability is shown in Figure 15, including:

Step 151, UE1 broadcasts a proximity discovery message, and the parameter carried in the proximity discovery message is the identification information of UE1;

Preferably, the identification information of the communication device is globally unique, and may be identification information specially set by the operator for proximity communication, or identification information defined in existing standards may be reused;

Correspondingly, after receiving UE1's broadcast message, UE2, UE3, and UE4 adjacent to UE1 return proximity reply messages to UE1 respectively. Depending on their own relay support capabilities, the parameters carried in the returned proximity reply messages are different. Specifically, :

Step 152a, the parameters carried in the proximity reply message returned by UE2 are the identity of UE2 and the indication information used to indicate that UE2 supports the relay capability;

Step 152b, the parameter carried in the proximity reply message returned by UE3 is the identity of UE3; (Since UE3 does not support the relay capability, UE3 may not carry any indication information in the proximity reply message, or may carry in the proximity reply message for indicates that it does not support the relay capability);

In step 152c, the parameters carried in the proximity reply message returned by UE4 are the identity of UE4 and indication information for indicating that UE4 supports the relay function.

Correspondingly, after UE1 receives the proximity reply messages from UE2, UE3, and UE4, UE1 locally stores the information of the communication devices adjacent to it (including identification information and information about whether it supports relay capability);

For example, an implementation form of the information of the adjacent communication devices stored locally by UE1 is: <identification information of UE2, supporting relay capability>, <identification information of UE3>, <identification information of UE4, supporting relay capability >; Another example, another implementation form is: <identification information of UE2, supports relay capability>, <identification information of UE3, does not support relay capability>, <identification information of UE4, supports relay capability>.

Preferably, UE1 can also form a priority list according to the received signal strengths of UE2, UE3 and UE4;

For example, assuming that the received signal strength of each communication device is: UE3>UE2>UE4, then the priority list formed can be: (identification information of UE3, priority 1; identification information of UE2, supporting relay capability, priority Level 2; identification information of UE4, supports relay capability, priority 3); can also be: (identification information of UE3, does not support relay capability, priority 1; identification information of UE2, supports relay capability, priority 2; UE4 identification information, support relay capability, priority 3).

Embodiment 5. This embodiment is an optimization of Embodiment 4. Based on the description of the scenario in Embodiment 4, UE1 wishes to communicate with UE5, but since UE1 and UE5 are not adjacent, UE1 needs to communicate from a nearby communication device that supports relay capabilities. One of the devices is selected as the relay node for this communication.

In this embodiment, UE1 learns from locally stored information that its adjacent communication devices include UE2, UE3, and UE4, where UE2 and UE4 support the relay capability. UE1 forms a priority list according to its received signal strength. In this embodiment, it is assumed that the signal strength of UE2 received by UE1 is higher than the signal strength of UE4 received by UE1, therefore, the priority list formed by UE1 is (identity of UE2, priority 1; identity of UE4, priority 2 ), where the smaller the number representing the priority, the higher the corresponding priority.

In this embodiment, UE1 first interacts with UE2, and the specific interaction process is shown in Figure 16, including:

Step 161, UE1 sends a relay request message to UE2, and the carried parameter is the identification information of UE5;

Step 162, since UE2 is adjacent to UE5, UE2 returns a relay reply message to UE1, and the carried parameter is Yes;

Step 163, UE1 sends a relay path establishment request message to UE2, and the parameters carried are the identification information of UE5 and the corresponding QoS parameters;

Step 164: Since there is no proximity communication between UE2 and UE5 before UE2 receives the relay path establishment request message sent by UE1, that is, there is no communication path between UE2 and UE5, then: UE2 establishes between itself and UE5 communication path;

In step 165, after the communication path between UE2 and UE5 is successfully established, UE2 returns a relay path establishment reply message to UE1, and the carried parameter is success.

Correspondingly, after UE1 receives the relay path establishment reply message returned by UE2, since UE1 determines that the communication path between UE2 and UE5 is successfully established, UE1 judges whether the communication path between itself and UE2 has been established to satisfy the communication between itself and UE5. Requirements (that is, QoS parameters) of the communication path, according to the judgment result, perform the corresponding operation, specifically:

If so, UE1 performs data transmission with UE5 through the communication path established between itself and UE2 and the communication path established between UE2 and UE5;

If not, UE1 establishes a communication path between itself and UE2, and further, UE1 performs data transmission with UE5 through the communication path established between itself and UE2 and the communication path established between UE2 and UE5.

Embodiment 6. The scenario of this embodiment is the same as that of Embodiment 5, except that this embodiment describes a scenario where UE1 fails to select UE2 as a relay node between itself and UE5.

The priority list formed by UE1 is (identification information of UE2, priority 1; identification information of UE4, priority 2), UE1 first interacts with UE2, and the specific interaction process is the same as that described in Embodiment 5, the difference is that: The signal quality between UE2 and UE5 is too poor, and the communication path establishment process in step 164 fails. At this time, the parameter carried in the relay path establishment reply message returned by UE2 to UE1 is failure, so UE1 fails to establish a communication path through UE2, and UE2 It cannot be used as a relay node between UE1 and UE5.

Since the priority of UE4 in the priority list is only second to that of UE2, UE1 chooses to interact with UE4 after determining that the communication path through UE2 fails to be established. The specific process is shown in Figure 17, including:

Step 171, UE1 sends a relay request message to UE4, and the carried parameter is the identification information of UE5;

Step 172, since UE4 is not adjacent to UE5, UE4 returns a relay reply message to UE1, and the carried parameter is No;

Correspondingly, after UE1 receives the relay reply message returned by UE4, it determines that UE4 cannot be used as a relay node between itself and UE5. At this time, UE1 judges whether the priority of UE4 is the lowest in the priority list. In this embodiment, since the judgment result is yes, it indicates that UE1 has not found a relay node that can serve as the communication for this time, so UE1 cannot communicate with UE5.

Embodiment 7. This embodiment is an optimization of Embodiment 4. Based on the scenario description of Embodiment 4, UE1 locally stores the information of the adjacent communication devices as: <identification information of UE2, supporting relay capability>, < Identification information of UE3>, <identification information of UE4, supporting relay capability>.

In this embodiment, UE1 wishes to communicate with UE5, UE1 first obtains information that can be used as a relay node for communication between UE1 and UE5. UE1 initiates a relay request process to UE2 and UE4 respectively (can be executed in parallel or sequentially);

According to the scenario description, it can be seen that UE4 and UE5 are not adjacent, and UE2 and UE5 are adjacent. Therefore, the parameter carried in the relay reply message returned by UE4 to UE1 is No; the parameter carried in the relay reply message returned by UE2 to UE1 is Yes;

UE1 initiates the process of establishing a relay path to UE2. If the establishment result is successful (that is, the communication path between UE2 and UE5 is successfully established, and the communication path between UE1 and UE2 is successfully established), UE2 is the relay path selected by UE1. The relay node communicating with UE5 this time, further, UE1 can perform data transmission with UE5 through the communication path between itself and UE2 and the communication path between UE2 and UE5.

Embodiment 8 In this embodiment, the communication initiator moves out of the network coverage during the process of communicating with the eNodeB1, and the communication initiator can communicate with the eNodeB1 through a relay.

The communication initiator sends a relay request message to a communication device that supports the relay function and is adjacent to it, and the carrying parameter is the identification information of eNodeB1;

When the communication device adjacent to the communication initiator receives the relay request message, it judges whether the identification information of the eNodeB currently adjacent to itself (such as the eNodeB where the communication device currently resides or is connected to the communication device) is consistent with The identification information of eNodeB1 in the relay request message is the same, and according to the different judgment results, the parameters carried in the relay reply message returned to the communication initiator are different; specifically: if they are the same, the communication device returns the relay reply message to the communication initiator. The parameter carried in the relay reply message is yes; if different, the parameter carried in the relay reply message returned by the communication device to the communication initiator is no.

Correspondingly, the communication initiator performs different operations according to the parameters carried in the received relay reply message, specifically:

If the parameter carried in the relay reply message is yes, the communication initiator determines that the communication device that sent the relay reply message can be used as a relay node for this communication, and sends data to eNodeB1 through the communication device;

If the parameter carried in the relay reply message is no, the communication initiator determines that the communication device that sent the relay reply message cannot be used as a relay node for this communication, and selects the next communication device to interact with, and the process is as described above describe.

The processing flow of the above method can be realized by a software program, and the software program can be stored in a storage medium, and when the stored software program is invoked, the steps of the above method are executed.

Based on the same inventive concept, the embodiment of the present invention also provides a communication device. Since the problem-solving principle of the communication device is similar to the method shown in FIG. 8 above, the implementation of the communication device can refer to the method shown in FIG. 8 The implementation of this method will not be repeated here.

Referring to Figure 18, an embodiment of the present invention provides a communication device, including:

The processing module 181 is configured to send a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party after determining that it is not adjacent to the communication target party, and the relay path establishment request is used to initiate The establishment process of the first communication path between the third-party device and the communication target party, and the relay path establishment request carries at least the identification information of the communication target party and the quality of service QoS parameters corresponding to the first communication path;

The communication module 182 is configured to, after determining that the first communication path is successfully established and after determining the second communication path established between itself and the third-party device, communicate with the communication target party through the established first communication path and the second communication path communication.

In implementation, the processing module 181 establishes the second communication path with the third-party device according to the following steps:

After determining that the first communication path is successfully established, directly send a connection establishment request to the third-party device, the connection establishment request is used to request the establishment of a second communication path between itself and the third-party device, and the connection establishment request carries its own Identification information, QoS parameters corresponding to the second communication path, and transmission resources allocated by itself for the second communication path; and according to the indication information carried in the connection establishment reply returned by the third-party device, determine whether the second communication path is established successfully, and then After determining that the second communication path is established successfully, obtain the transmission resources allocated by the third-party device for the second communication path from the connection establishment reply; or,

When it is determined that the first communication path is successfully established, and it is determined that none of the established communication paths between itself and the third-party device can meet the QoS parameters corresponding to the second communication path or no communication path is established between itself and the third-party device, send The third-party device sends a connection establishment request, the connection establishment request is used to request the establishment of a second communication path between itself and the third-party device, and the connection establishment request carries its own identification information, QoS parameters corresponding to the second communication path, and The transmission resources allocated by itself for the second communication path; and according to the indication information carried in the connection establishment reply returned by the third-party device, determine whether the second communication path is successfully established, and after determining that the second communication path is successfully established, from the connection In establishing the reply, the transmission resource allocated by the third-party device for the second communication path is obtained.

In implementation, the processing module 181 is also used for:

When sending a relay path establishment request to a third-party device, the establishment process of the second communication path is also initiated through the relay path establishment request, and the relay path establishment request also carries its own identification information and the corresponding information of the second communication path. QoS parameters; or,

If after determining that it is not adjacent to the communication target party, it is determined that the established communication path between itself and the third-party device cannot satisfy the QoS parameter corresponding to the second communication path, or no communication path has been established between itself and the third-party device, then When sending a relay path establishment request to a third-party device, the establishment process of the second communication path is also initiated through the relay path establishment request, and the relay path establishment request also carries its own identification information, the QoS parameters and transmission resources allocated by itself for the second communication path.

In implementation, the processing module 181 is also used for:

If it is determined that the first communication path is successfully established, and it is determined that a communication path that can satisfy the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, then the established communication path is used as the second communication path, and Notifying the third party device of its own allocated transmission resources for the established communication path; or,

If it is determined that a communication path capable of satisfying the QoS parameters corresponding to the second communication path has been established between itself and the third-party device, when sending a relay path establishment request to the third-party device, the second party is also notified through the relay path establishment request The three-party device itself has allocated transmission resources for the established communication path.

Based on the same inventive concept, the embodiment of the present invention also provides a communication device. Since the problem-solving principle of the communication device is similar to the method shown in FIG. 9 above, the implementation of the communication device can refer to the method shown in FIG. 9 The implementation of this method will not be repeated here.

Referring to FIG. 19, a communication device provided by an embodiment of the present invention can serve as a relay node between a communication initiator and a communication target party. The communication device includes:

The receiving module 191 is configured to receive a relay path establishment request sent by the communication initiator, where the relay path establishment request at least carries the identification information of the communication target party and the first communication path requested to be established between itself and the communication target party QoS parameters;

Path establishment module 192, configured to determine the first communication path established between itself and the communication target party, and the second communication path established between itself and the communication initiator;

The data forwarding module 193 is configured to forward data between the communication initiator and the communication target through the established first communication path and the second communication path.

In implementation, the path establishment module 192 is specifically used for:

Before determining the first communication path and the second communication path, according to a preset judgment condition, it is determined that itself accepts the relay path establishment request.

In implementation, the path establishment module 192 determines the first communication path according to the following steps:

directly establishing an establishment process that initiates the first communication path; or,

When it is determined that a communication path capable of satisfying the QoS parameter corresponding to the first communication path has been established between itself and the communication target party, the established communication path is used as the first communication path; or,

When it is determined that the established communication path between itself and the communication target party cannot meet the QoS parameters corresponding to the first communication path, or no communication path has been established between itself and the communication target party, initiate the establishment process of the first communication path.

In an implementation, the path establishment module 192 initiates the establishment process of the first communication path, including:

Sending a first connection establishment request to the communication target party, where the first connection establishment request is used to request to establish a first communication path with the communication target party, and the first connection establishment request carries its own identification information, the first communication path corresponding QoS parameters and the transmission resources allocated by itself for the first communication path; and according to the indication information in the first connection establishment reply returned by the communication target party, determine whether the first communication path is successfully established, and after determining that the first communication path is established successfully , from the first connection establishment reply, acquire the transmission resources allocated by the communication target party for the first communication path.

In implementation, the path establishment module 192 is also used for:

After using the established communication path as the first communication path, return a relay path establishment reply to the communication initiator, and indicate in the relay path establishment reply that the first communication path is established successfully; or,

After the establishment process of the first communication path is completed, a relay path establishment reply is returned to the communication initiator, and whether the first communication path is successfully established is indicated in the relay path establishment reply.

In implementation, the path establishment module 192 is also used for:

If the relay path establishment request received by the receiving module 191 also carries the identification information of the communication initiator and the QoS parameters corresponding to the second communication path, then the transmission resources allocated for the second communication path after the first communication path is successfully established , and carry the indication information for indicating that the second communication path is established successfully and the transmission resources allocated by itself for the second communication path in the relay path establishment reply returned to the communication initiator.

In implementation, the receiving module 191 is also configured to: receive the second connection establishment request sent by the communication initiator, where the second connection establishment request carries the identification information of the communication initiator, the QoS parameter corresponding to the second communication path, and the communication initiator is transmission resources allocated by the second communication path;

The processing module 192 is also configured to: if the second connection establishment request is accepted by itself, the second connection establishment reply returned to the communication originator carries indication information indicating that the second communication path is successfully established and that the second communication path itself is a second communication link. The transmission resource allocated by the path; if the second connection establishment request is not accepted by itself, the indication information for indicating the failure of the establishment of the second communication path is carried in the second connection establishment reply.

In implementation, if the second communication path is an established communication path between the communication initiator and the third-party device, the path establishment module 192 is also used to:

Determine the established communication path according to the received notification sent by the communication initiator; or,

Determine the established communication path according to the received relay path establishment request.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and combinations of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a Means for realizing the functions specified in one or more steps of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (27)

1. A method for implementing Proximity Communication, characterized in that the method comprises: After the communication initiator determines that it is not adjacent to the communication target party, it sends a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party, and the relay path establishment request is used to initiate A process of establishing a first communication path between the third-party device and the communication target party, and the relay path establishment request at least carries the identification information of the communication target party and the corresponding information of the first communication path Quality of service QoS parameters; After the communication initiator determines that the first communication path is established successfully and determines the second communication path established between itself and the third-party device, the communication initiator communicates with the communication path through the first communication path and the second communication path. The target party communicates. 2. The method according to claim 1, wherein the communication initiator establishes a second communication path with the third-party device according to the following steps: The communication initiator sends a connection establishment request to the third-party device after determining that the first communication path is established successfully, and the connection establishment request is used to request establishment of a second communication between itself and the third-party device path, and the connection establishment request carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path; The communication initiator determines whether the second communication path is successfully established according to the indication information carried in the connection establishment reply returned by the third-party device, and after determining that the second communication path is successfully established, from the connection In the establishment reply, the transmission resources allocated by the third-party device for the second communication path are acquired. 3. The method according to claim 2, wherein after the communication initiator determines that the first communication path is established successfully and before sending the connection establishment request to the third-party device, the method further include: The communication initiator determines that none of the communication paths established between itself and the third-party device can satisfy the QoS parameter corresponding to the second communication path, or no communication path is established between itself and the third-party device. 4. The method of claim 1, wherein, When the communication initiator sends the relay path establishment request to the third-party device, it also initiates the process of establishing the second communication path through the relay path establishment request, and in the relay path establishment request It also carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path. 5. The method according to claim 4, wherein after the communication initiator determines that it is not adjacent to the communication target party and before sending the relay path establishment request, it further comprises: The communication initiator determines that the communication path established between itself and the third-party device cannot satisfy the QoS parameter corresponding to the second communication path, or no communication path is established between itself and the third-party device. 6. The method of claim 1, further comprising: After the communication initiator determines that the first communication path has been established successfully, and determines that a communication path that can satisfy the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, the communication initiator sends the The established communication path is used as the second communication path, and the third-party device itself is notified of the transmission resource allocated for the established communication path; or, After determining that a communication path capable of satisfying the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, the communication initiator sends the relay path establishment to the third-party device When requesting, the third-party device is also notified of the transmission resource allocated for the established communication path by the relay path establishment request. 7. The method according to any one of claims 1-6, characterized in that, if the number of currently determined third-party devices is at least two, the communication initiation direction can be used as the link between itself and the communication target party. The relay path establishment request sent by the third-party device between the relay nodes includes: The communication initiator selects a third-party device from all the third-party communication devices according to the preset priorities of the third-party devices in order of priority from high to low, and sends a report to the currently selected The third-party device sends the relay path establishment request. 8. A method for implementing proximity communication, characterized in that the method comprises: The third-party device receives the relay path establishment request sent by the communication initiator, and the relay path establishment request carries at least the identification information of the communication target party and the first request to be established between the third-party device and the communication target party. a QoS parameter corresponding to the communication path; The third-party device determines a first communication path established between itself and the communication target party, and a second communication path established between itself and the communication initiator; The third-party device forwards data between the communication initiator and the communication target through the first communication path and the second communication path; Wherein, the third-party device is a communication device capable of serving as a relay node between the communication initiator and the communication target party. 9. The method according to claim 8, characterized in that, after the third-party device receives the relay path establishment request sent by the communication initiator, and before determining the first communication path and the second communication path ,Also includes: The third-party device determines that it can accept the relay path establishment request according to a preset judgment condition. 10. The method according to claim 8 or 9, wherein determining the first communication path by the third-party device comprises: The third-party device directly initiates the process of establishing the first communication path; or, When determining that a communication path capable of satisfying the QoS parameter corresponding to the first communication path has been established between itself and the communication target party, the third-party device uses the established communication path as the first communication path; or, When determining that the communication path established between itself and the communication target party cannot satisfy the QoS parameter corresponding to the first communication path, or no communication path has been established between itself and the communication target party, the third party The device initiates a process of establishing the first communication path. 11. The method according to claim 10, wherein the third-party device initiates a process of establishing the first communication path, comprising: The third-party device sends a first connection establishment request to the communication target party, where the first connection establishment request is used to request establishment of a first communication path with the communication target party, and the first connection establishment request carries its own identification information, the QoS parameters corresponding to the first communication path, and the transmission resources allocated by itself for the first communication path; The third-party device determines whether the first communication path is successfully established according to the indication information in the first connection establishment reply returned by the communication target party, and after determining that the first communication path is successfully established, from the In the first connection establishment reply, acquire the transmission resource allocated by the communication target party for the first communication path. 12. The method of claim 11, further comprising: After using the established communication path as the first communication path, the third-party device returns a relay path establishment reply to the communication initiator, and indicates that the first communication path is established in the relay path establishment reply. - the communication path is established successfully; or, After the third-party device completes the establishment process of the first communication path, it returns a relay path establishment reply to the communication initiator, and indicates in the relay path establishment reply whether the first communication path is established success. 13. The method according to claim 11, characterized in that, after receiving the first connection establishment request, the communication target party judges whether it accepts the first connection establishment according to a preset judgment condition ask; If the first connection establishment request is accepted, the communication target party carries indication information indicating that the first communication path is established successfully in the first connection establishment reply and allocates the first communication path by itself. transmission resources; If the first connection establishment request is not accepted, the communication target party carries indication information for indicating that the first communication path establishment fails in the first connection establishment reply. 14. The method according to claim 8 or 9, wherein if the relay path establishment request also carries the identification information of the communication initiator, the QoS parameter corresponding to the second communication path, and the The transmission resource allocated by the communication initiator for the second communication path, and the determination by the third party device of the second communication path includes: After the first communication path is successfully established, the third-party device allocates transmission resources for the second communication path, and carries a relay path establishment reply to the communication initiator to indicate the second communication path The indication information of the successful establishment of the second communication path and the transmission resources allocated by itself for the second communication path. 15. The method of claim 8, further comprising: The third-party device receives a second connection establishment request sent by the communication initiator, where the second connection establishment request carries identification information of the communication initiator, QoS parameters corresponding to the second communication path, and the the transmission resource allocated by the communication initiator for the second communication path; If the third-party device accepts the second connection establishment request, the second connection establishment reply returned to the communication initiator by the third-party device carries indication information indicating that the second communication path is successfully established and the third-party device itself is transmission resources allocated by the second communication path; If the third-party device does not accept the second connection establishment request, the third-party device carries indication information for indicating that the second communication path establishment fails in the second connection establishment reply. 16. The method according to claim 8, wherein if the second communication path is an established communication path between the communication initiator and the third-party device, the method further comprises: The third-party device determines the established communication path according to the received notification sent by the communication initiator; or, The third-party device determines the established communication path according to the received relay path establishment request. 17. A communication device, characterized in that the communication device comprises: A processing module, configured to send a relay path establishment request to a third-party device that can serve as a relay node between itself and the communication target party after determining that it is not adjacent to the communication target party, and the relay path establishment request uses Initiating a process of establishing a first communication path between the third-party device and the communication target party, and the relay path establishment request carries at least identification information of the communication target party and the first communication path Corresponding quality of service QoS parameters; The communication module is configured to communicate with the third-party device through the first communication path and the second communication path after determining that the first communication path is successfully established and determining the second communication path established between itself and the third-party device. The target party communicates. 18. The communication device according to claim 17, wherein the processing module establishes a second communication path with the third-party device according to the following steps: After determining that the first communication path is established successfully, directly send a connection establishment request to the third-party device, where the connection establishment request is used to request establishment of a second communication path between itself and the third-party device, and the The connection establishment request carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path; and according to the information carried in the connection establishment reply returned by the third-party device indicating information, determining whether the second communication path is successfully established, and after determining that the second communication path is successfully established, obtaining the connection establishment reply from the connection establishment reply; transfer resources; or, After determining that the first communication path is successfully established, and determining that none of the established communication paths between itself and the third-party device can satisfy the QoS parameter corresponding to the second communication path or between itself and the third-party device When no communication path is established, send a connection establishment request to the third-party device, where the connection establishment request is used to request establishment of a second communication path between itself and the third-party device, and the connection establishment request carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path; and according to the indication information carried in the connection establishment reply returned by the third-party device, determine the Whether the second communication path is successfully established, and after determining that the second communication path is successfully established, obtain the transmission resources allocated by the third-party device for the second communication path from the connection establishment reply. 19. The communication device according to claim 17, wherein the processing module is further used for: When sending the relay path establishment request to the third-party device, the establishment process of the second communication path is also initiated through the relay path establishment request, and the relay path establishment request also carries its own identification Information and QoS parameters corresponding to the second communication path; or, If it is determined that the established communication path between itself and the third-party device cannot satisfy the QoS parameter corresponding to the second communication path after determining that it is not adjacent to the communication target party, or the communication between itself and the third-party device If no communication path is established between them, when the relay path establishment request is sent to the third-party device, the establishment process of the second communication path is also initiated through the relay path establishment request, and the relay path The establishment request also carries its own identification information, the QoS parameters corresponding to the second communication path, and the transmission resources allocated by itself for the second communication path. 20. The communication device according to claim 17, wherein the processing module is further used for: If it is determined that the first communication path is established successfully, and it is determined that a communication path that can satisfy the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, then the established communication path as the second communication path, and notify the third-party device itself of the transmission resources allocated for the established communication path; or, If it is determined that a communication path capable of satisfying the QoS parameter corresponding to the second communication path has been established between itself and the third-party device, when sending the relay path establishment request to the third-party device, also pass The relay path establishment request notifies the third-party device of its allocated transmission resources for the established communication path. 21. A communication device, characterized in that the communication device can serve as a relay node between the communication initiator and the communication target party, the communication device comprising: The receiving module is configured to receive a relay path establishment request sent by the communication initiator, where the relay path establishment request at least carries the identification information of the communication target party and requests to establish the first communication between itself and the communication target party QoS parameters corresponding to the path; a path establishment module, configured to determine a first communication path established between itself and the communication target party, and a second communication path established between itself and the communication initiator; A data forwarding module, configured to forward data between the communication initiator and the communication target through the first communication path and the second communication path. 22. The communication device according to claim 20, wherein the path establishment module is specifically used for: Before determining the first communication path and the second communication path, determine that it accepts the relay path establishment request according to a preset judgment condition. 23. The communication device according to claim 21 or 22, wherein the path establishment module determines the first communication path according to the following steps: directly establishing and initiating the establishment process of the first communication path; or, When determining that a communication path capable of satisfying the QoS parameter corresponding to the first communication path has been established between itself and the communication target party, using the established communication path as the first communication path; or, When it is determined that the communication path established between itself and the communication target party cannot satisfy the QoS parameter corresponding to the first communication path, or no communication path has been established between itself and the communication target party, initiate the second communication path A process of establishing a communication path. 24. The communication device according to claim 23, wherein the path establishment module initiates the establishment process of the first communication path, comprising: Sending a first connection establishment request to the communication target party, where the first connection establishment request is used to request establishment of a first communication path with the communication target party, and the first connection establishment request carries its own identification information, The QoS parameters corresponding to the first communication path and the transmission resources allocated by itself for the first communication path; and determining the first communication path according to the indication information in the first connection establishment reply returned by the communication target party Whether the establishment of the first communication path is successful, and after determining that the first communication path is successfully established, obtain the transmission resource allocated by the communication target party for the first communication path from the first connection establishment reply. 25. The communication device according to claim 21 or 22, wherein the path establishment module is further used for: If the relay path establishment request received by the receiving module also carries the identification information of the communication initiator and the QoS parameter corresponding to the second communication path, after the first communication path is established successfully, for the Allocate transmission resources for the second communication path, and carry indication information indicating that the second communication path is established successfully in the relay path establishment reply returned to the communication initiator and allocate resources for the second communication path by itself transmission resources. 26. The communication device of claim 21 , wherein The receiving module is further configured to: receive a second connection establishment request sent by the communication initiator, the second connection establishment request carrying identification information of the communication initiator and QoS parameters corresponding to the second communication path and the transmission resources allocated by the communication initiator for the second communication path; The path establishment module is further configured to: if it accepts the second connection establishment request, carry an indication indicating that the second communication path is established successfully in the second connection establishment reply returned to the communication initiator Information and the transmission resource allocated by itself for the second communication path; if the second connection establishment request is not accepted by itself, the second connection establishment reply carries the information used to indicate that the second communication path fails to be established Instructions. 27. The communication device according to claim 21, wherein if the second communication path is an established communication path between the communication initiator and the third-party device, the path establishment module further uses At: Determine the established communication path according to the received notification sent by the communication initiator; or, Determine the established communication path according to the received relay path establishment request.