CN113615257B - Path selection method and device and terminal - Google Patents

Abstract

An embodiment of the present application provides a path selection method and device, and a terminal. The method includes: the first terminal determines the transmission path corresponding to the service data according to the path selection rule, and sends the service to the second terminal or the network on the transmission path. data.

Description

A path selection method, device, and terminal

technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a path selection method and device, and a terminal.

Background technique

With the continuous development of the fifth generation ( ^5th Generation, 5G) mobile communication technology, the inter-device direct communication service is introduced into the standard as a new service form for related standardization.

For inter-device direct communication, there are many paths that terminals can communicate with, and how the terminal selects a suitable path for communication has not yet been clarified.

Contents of the invention

Embodiments of the present application provide a path selection method and device, and a terminal.

The path selection method provided in the embodiment of this application includes:

The first terminal determines the transmission path corresponding to the service data according to the path selection rule, and sends the service data to the second terminal or the network on the transmission path.

The path selection device provided in the embodiment of the present application is applied to the first terminal, and the device includes:

a determining unit, configured to determine a transmission path corresponding to the service data according to path selection rules;

a sending unit, configured to send the service data to a second terminal or a network on the transmission path.

The terminal provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to execute the above path selection method.

The chip provided in the embodiment of the present application is used to implement the above path selection method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above path selection method.

The computer-readable storage medium provided by the embodiments of the present application is used for storing a computer program, and the computer program causes a computer to execute the above path selection method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above path selection method.

The computer program provided by the embodiments of the present application, when running on a computer, enables the computer to execute the above path selection method.

The technical solution of the embodiment of the present application clarifies the path selection rules, thereby realizing that the first terminal determines the transmission path corresponding to the service data according to the path selection rules, and sends the service data to the second terminal or the network on the transmission path, In this way, it is realized that the first terminal selects the most suitable transmission path for communication.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

FIG. 2 is a network architecture diagram based on D2D technology provided by an embodiment of the present application;

FIG. 3 is a 5G network architecture diagram provided by an embodiment of the present application;

FIG. 4 is a network architecture diagram based on a relay mode provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of a path selection method provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a terminal direct connection path provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a network direct connection path based on N6 interface routing provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of a network internal path based on core network routing provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of the position of the path selection function layer provided by the embodiment of the present application;

FIG. 10 is a schematic diagram of the structural composition of the path selection device provided by the embodiment of the present application;

Fig. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 13 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example: global system of mobile communication (globalsystem of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD) system, advanced long term evolution (advanced long term evolution, LTE-A) system, new radio (new radio, NR) system, evolution system of NR system, LTE (LTE- based access to unlicensed spectrum (LTE-U) system, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed frequency bands, universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnected microwave access ( worldwide interoperability for microwave access (WiMAX) communication systems, wireless local area networks (wireless local area networks, WLAN), wireless fidelity (wireless fidelity, WiFi), next generation communication systems or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technologies, mobile communication systems will not only support traditional communication, but also support, for example, device-to-device (D2D ) communication, machine to machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), and vehicle to vehicle (vehicle to vehicle, V2V) communication, etc., the embodiments of the present application can also be applied to these communication systems.

The system architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

Exemplarily, a communication system 100 applied in this embodiment of the application is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal 120 (or called a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the Network devices can be mobile switching centers, relay stations, access points, vehicle-mounted devices, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in future communication systems.

The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110 . "Terminal" as used herein includes, but is not limited to, a connection via a wireline, such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; and and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM radio a transmitter; and/or an apparatus of another terminal configured to receive/send communication signals; and/or an Internet of Things (Internet of Things, IoT) device. A terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; Personal Communications System (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data communication capabilities; may include radiotelephones, pagers, Internet/Internet PDAs with network access, web browsers, organizers, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palm-sized receivers or other electronic device. A terminal may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminals in 5G networks or terminals in future evolved PLMNs, etc.

Optionally, direct-to-device (Device to Device, D2D) communication may be performed between terminals 120 .

Optionally, the 5G communication system or the 5G network may also be called a New Radio (New Radio, NR) system or an NR network.

Figure 1 exemplarily shows a network device and two terminals. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within the coverage area of the present application. There is no limit to this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

It should be understood that a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal 120 with a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; communication The device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

设备间直连通信

Direct communication between devices

Direct communication between devices is mainly aimed at applications such as Augmented Reality (AR) games and virtual reality (Virtual Reality, VR) games, and has high requirements for service quality such as speed, delay, packet loss rate, and high-speed codec. . For example: For VR games, the rate needs to reach 10Gbps, and the packet loss rate should not exceed 10E-4. For the session established for the direct connection communication service between devices, the terminals in the same session can be regarded as forming a service application group, for example: forming a team in a game. There are the following possible communication methods between terminals in the group, and the following communication methods can be used independently or in combination:

- A communication method in close proximity to each other: for example, a communication method using a device-to-device (Device to Device, D2D) technology to perform broadcast or multicast. Another example: establish a sidelink (sidelink) between devices for 1-to-1 communication. This communication method is also called a communication method based on the PC5 interface. It should be noted that the PC5 interface refers to the communication between the device and the device. Interface for direct communication between devices.

- A communication method far away from each other: for example: a communication method using the following path: first terminal→first network→application server→second network-second terminal, this communication method is also called a Uu interface-based communication method.

终端和终端之间通过D2D进行通信

Communication between terminals through D2D

Fig. 2 is a diagram of a network architecture optionally based on D2D technology. As shown in Fig. 2, the devices involved in this architecture include: a terminal (User Equipment, UE), an Evolved Universal Terrestrial Radio Access network (Evolved Universal Terrestrial Radio Access) Network, E-UTRAN), mobility management function (Mobility ManagementEntity, MME) network element, home subscriber server (HSS, Home Subscriber Server), serving/packet data gateway (Serving/Packet Data Network Gateway, S/PGW), proximity Service (Proximity-basedServices Function, ProSe) function network element, ProSe application service (ProSe Application Server), SLP network element.

Wherein, the communication between UE A and UE B is performed through the PC5 interface, and the communication path based on the PC5 interface is called a terminal direct path.

终端和终端之间通过网络进行通信

Communication between terminals and terminals through the network

Figure 3 is a diagram of an optional 5G network architecture. As shown in Figure 3, the equipment involved in this architecture includes: a terminal (UE, User Equipment), a radio access network (RAN, Radio Access Network), and a user plane function (UPF, UserPlane Function), data network (DN, Data Network), core access and mobility management (AMF, CoreAccess and Mobility Management Function), session management function (SMF, Session ManagementFunction), policy control function (PCF, Policy Control Function), application function (AF, ApplicationFunction), authentication server function (AUSF, Authentication Server Function), unified data management (UDM, Unified Data Management).

Wherein, the communication between terminals through the network can refer to the network architecture shown in FIG. 3 , in this network architecture, the data of the terminal is sent to the application server (ie AF), and the AF sends the data to the opposite terminal.

终端和终端之间通过中继设备进行通信

Communication between terminals through relay equipment

Fig. 4 is a diagram of a network architecture optionally based on the relay mode. As shown in Fig. 4 , the devices involved in the architecture include: remote UE, relay UE, base station, core network and so on. Wherein, the remote UE communicates with the relay UE through the PC5 interface, and the relay UE communicates with the base station through the Uu interface.

Based on the above communication methods, in the process of communication between terminals, or between terminals and the network, there are two paths to choose from. How to make the terminal choose the most suitable path for communication needs to be clarified. , the following technical solutions of the embodiments of the present application are proposed.

Fig. 5 is a schematic flow chart of the path selection method provided by the embodiment of the present application. As shown in Fig. 5, the path selection method includes the following steps:

Step 501: The first terminal determines a transmission path corresponding to the service data according to a path selection rule, and sends the service data to the second terminal or the network on the transmission path.

In the embodiment of the present application, the first terminal may communicate with the second terminal, and the first terminal may also communicate with the network. The communication methods in these two scenarios are described below.

所述第一终端与所述第二终端通信的场景

The scenario where the first terminal communicates with the second terminal

Service data can be transmitted between the first terminal and the second terminal through a first transmission path and a second transmission path, wherein the first transmission path is a transmission path based on a PC5 interface; the second transmission path is a transmission path based on a PC5 interface; The transmission path is a transmission path based on the Uu interface.

Here, the PC5 interface refers to the interface between the terminals, and the Uu interface refers to the interface between the terminal and the base station.

●In an optional implementation manner, the first transmission path is a terminal direct connection path, and the second transmission path is a network direct connection path based on N6 interface routing.

Further, when the transmission path corresponding to the service data is the direct connection path of the terminal, the target address of the service data is determined according to the address of the second terminal; the transmission path corresponding to the service data is the In the case of the direct network path routed by the N6 interface, the target address of the service data is determined according to the address of the application server on the N6 interface.

For example, as shown in FIG. 6, the terminal direct connection path can be referred to. UE1 and UE2 communicate based on the PC5 interface, and the path formed by UE1→UE2 is the terminal direct connection path.

For example: the network direct connection path based on N6 interface routing can refer to Figure 7, UE1 and UE2 communicate based on Uu interface, UE1→RAN→UPF1→UPF2→DN→...→UE2 forms The path of is the network direct connection path based on N6 interface routing. It can be seen that the network direct connection path based on the N6 interface routing not only involves the Uu interface, but also involves the N6 interface.

When the first terminal needs to send data, a corresponding target IP address is selected according to the selected transmission path. Taking the first terminal selecting the network direct connection path based on the N6 interface route as an example, the destination IP address corresponding to the transmission path is the address of the DN on the N6 interface (or the address of the application server). On the other hand, a PDU session is assigned an IP address, which is the address of the application server on the N6 interface.

●In an optional implementation manner, the first transmission path is a terminal direct connection path, and the second transmission path is an internal network path based on core network routing.

Further, when the transmission path corresponding to the service data is the direct connection path of the terminal, the target address of the service data is determined according to the address of the second terminal; the transmission path corresponding to the service data is the In the case of a network internal path routed by the core network, the target address of the service data is determined according to the address of the second terminal.

For example, as shown in FIG. 6, the terminal direct connection path can be referred to. UE1 and UE2 communicate based on the PC5 interface, and the path formed by UE1→UE2 is the terminal direct connection path.

For example: the internal path of the network based on core network routing can refer to Figure 8. The UPF corresponding to UE1 is UPF1, the UPF corresponding to UE2 is UPF1, and the UPF corresponding to UE3 is UPF2. UPF1 and UPF2 are connected to the same SMF. The transmission path between UE2 and UE3 belongs to the internal path of the network based on core network routing. UE1 and UE2 communicate based on the Uu interface, and the path formed by UE1→UPF1→UE2 is the internal network path based on core network routing. UE1 and UE3 communicate based on the Uu interface, and the path formed by UE1→UPF1→UPF2→UE3 is the internal network path based on core network routing.

The service data sent by the first terminal to the second terminal is routed inside the core network, and the service data is not sent to the external network through the N6 interface.

所述第一终端与所述网络通信的场景

The scenario where the first terminal communicates with the network

Service data can be transmitted between the first terminal and the network through a third transmission path and a fourth transmission path; wherein, the third transmission path is a transmission path based on a Uu interface; the fourth transmission path It is a transmission path based on the PC5 interface and the Uu interface.

●In an optional implementation manner, the third transmission path is a network direct connection path based on N6 interface routing, and the fourth transmission path is a relay path based on a relay device.

Further, when the transmission path corresponding to the business data is the network direct connection path based on the N6 interface routing, the target address of the business data is determined according to the address of the application server on the N6 interface; the business data In a case where the corresponding transmission path is the relay path based on the relay device, the target address of the service data is determined according to the address of the second terminal.

For example: the network direct connection path based on N6 interface routing can refer to Figure 7, UE1 and UE2 communicate based on Uu interface, UE1→RAN→UPF1→UPF2→DN→...→UE2 forms The path of is the network direct connection path based on N6 interface routing. It can be seen that the network direct connection path based on the N6 interface routing not only involves the Uu interface, but also involves the N6 interface.

For example: the relay path based on the relay device can refer to Figure 4, UE1 and UE2 communicate based on the PC5 interface and Uu interface, remote UE→relay UE→base station→core network→.... ..→The path formed by UE2 is the relay path based on the relay device.

●In an optional implementation manner, the third transmission path is an internal network path based on a core network route, and the fourth transmission path is a relay path based on a relay device.

Further, when the transmission path corresponding to the service data is the network internal path based on core network routing, the target address of the service data is determined according to the address of the second terminal; the transmission path corresponding to the service data In the case of the relay path based on the relay device, the target address of the service data is determined according to the address of the second terminal.

For example: the internal path of the network based on core network routing can refer to Figure 8. The UPF corresponding to UE1 is UPF1, the UPF corresponding to UE2 is UPF1, and the UPF corresponding to UE3 is UPF2. UPF1 and UPF2 are connected to the same SMF. The transmission path between UE2 and UE3 belongs to the internal path of the network based on core network routing. UE1 and UE2 communicate based on the Uu interface, and the path formed by UE1→UPF1→UE2 is the internal network path based on core network routing. UE1 and UE3 communicate based on the Uu interface, and the path formed by UE1→UPF1→UPF2→UE3 is the internal network path based on core network routing.

For example: the relay path based on the relay device can refer to Figure 4, UE1 and UE2 communicate based on the PC5 interface and Uu interface, remote UE→relay UE→base station→core network→.... ..→The path formed by UE2 is the relay path based on the relay device.

In this embodiment of the present application, the path selection rule is pre-configured or configured by the network. Further, optionally, the path selection rule is configured by the network, including: the path selection rule is configured by the SMF or the PCF. The contents of the routing rules are described below.

In the embodiment of the present application, the path selection function layer of the first terminal determines the transmission path corresponding to the service data according to the path selection rules; wherein, the path selection function layer is located above the IP layer; or, the path selection function layer is located at Below the IP layer and above the AS layer.

Optionally, for the path selection related to the "network direct connection path based on N6 interface routing", the transmission path corresponding to the service data can be determined through the path selection function layer above the IP layer, as shown in the A module in Figure 9 .

Optionally, for the path selection involving "core network routing-based network internal path", the transmission path corresponding to the service data can be determined through the path selection function layer located below the IP layer and above the AS layer, as shown in Figure 9 The B module.

In an optional implementation manner of the present application, the path selection rule is used to determine at least one of the following: paths corresponding to application parameters; paths corresponding to Quality of Service (Quality of Service, QoS); and paths corresponding to link quality.

Further, optionally, the application parameters include at least one of the following: application identifier, port, source address, destination address, data network name (Data Network Name, DNN), single network slice selection assistance information (Single NetworkSlice Selection Assistance Information , S-NSSAI).

Further, optionally, the QoS includes at least one of the following: data rate, delay, reliability, and QoS scale value (QoS Class Identifier, QCI).

Further, optionally, the link quality includes a mobility state.

In an example, the contents of the path selection rules are shown in Table 1 below:

Table 1

It should be noted that the selection layer in Table 1 above may also be understood as the path selection function layer in the embodiment of the present application.

FIG. 10 is a schematic diagram of the structural composition of a path selection device provided in an embodiment of the present application. The path selection device is applied to a first terminal. As shown in FIG. 10 , the path selection device includes:

A determining unit 1001, configured to determine a transmission path corresponding to the service data according to path selection rules;

A sending unit 1002, configured to send the service data to a second terminal or a network on the transmission path.

In an optional implementation manner, in the scenario where the first terminal communicates with the second terminal, the first terminal and the second terminal can conduct business through the first transmission path and the second transmission path transmission of data;

The first transmission path is a transmission path based on the PC5 interface;

The second transmission path is a Uu interface-based transmission path.

In an optional implementation manner, the first transmission path is a terminal direct connection path, and the second transmission path is a network direct connection path based on N6 interface routing.

In an optional implementation manner, when the transmission path corresponding to the service data is a direct connection path of the terminal, the target address of the service data is determined according to the address of the second terminal;

In a case where the transmission path corresponding to the service data is the network direct connection path based on the N6 interface routing, the target address of the service data is determined according to the address of the application server on the N6 interface.

In an optional implementation manner, the first transmission path is a terminal direct connection path, and the second transmission path is an internal network path based on core network routing.

In an optional implementation manner, when the transmission path corresponding to the service data is a direct connection path of the terminal, the target address of the service data is determined according to the address of the second terminal;

In a case where the transmission path corresponding to the service data is the internal network path based on core network routing, the target address of the service data is determined according to the address of the second terminal.

In an optional implementation manner, in the scenario where the first terminal communicates with the network, service data can be transmitted between the first terminal and the network through a third transmission path and a fourth transmission path;

The third transmission path is a Uu interface-based transmission path;

The fourth transmission path is a transmission path based on the PC5 interface and the Uu interface.

In an optional implementation manner, the third transmission path is a network direct connection path based on N6 interface routing, and the fourth transmission path is a relay path based on a relay device.

In an optional implementation manner, when the transmission path corresponding to the service data is the network direct connection path based on the N6 interface routing, the target address of the service data is based on the address of the application server on the N6 interface Sure;

In a case where the transmission path corresponding to the service data is the relay device-based relay path, the target address of the service data is determined according to the address of the second terminal.

In an optional implementation manner, the third transmission path is an internal network path based on a core network route, and the fourth transmission path is a relay path based on a relay device.

In an optional implementation manner, when the transmission path corresponding to the service data is the internal network path based on core network routing, the target address of the service data is determined according to the address of the second terminal;

In a case where the transmission path corresponding to the service data is the relay device-based relay path, the target address of the service data is determined according to the address of the second terminal.

In an optional implementation manner, the path selection rule is pre-configured or configured by the network.

In an optional implementation manner, the path selection rules are configured for the network, including:

The path selection rule is configured for SMF or PCF.

In an optional implementation manner, the path selection rule is used to determine at least one of the following:

The path corresponding to the application parameter;

Path corresponding to QoS;

The path corresponding to the link quality.

In an optional implementation manner, the application parameters include at least one of the following: application identifier, port, source address, destination address, DNN, and S-NSSAI.

In an optional implementation manner, the QoS includes at least one of the following: data rate, delay, reliability, and QCI.

In an optional implementation manner, the link quality includes a mobility state.

In an optional implementation manner, the determining unit 1001 is configured to determine the transmission path corresponding to the service data according to the path selection rules through the path selection function layer;

Wherein, the path selection function layer is above the IP layer; or, the path selection function layer is below the IP layer and above the AS layer.

Those skilled in the art should understand that the relevant description of the above path selection apparatus in the embodiment of the present application can be understood with reference to the relevant description of the path selection method in the embodiment of the present application.

Fig. 11 is a schematic structural diagram of a communication device 1100 provided by an embodiment of the present application. The communication device can be a terminal or a network device. The communication device 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the communication device 1100 may further include a memory 1120 . Wherein, the processor 1110 can invoke and run a computer program from the memory 1120, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1120 may be an independent device independent of the processor 1110 , or may be integrated in the processor 1110 .

Optionally, as shown in FIG. 11 , the communication device 1100 may further include a transceiver 1130, and the processor 1110 may control the transceiver 1130 to communicate with other devices, specifically, to send information or data to other devices, or to receive other Information or data sent by the device.

Wherein, the transceiver 1130 may include a transmitter and a receiver. The transceiver 1130 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 1100 may specifically be the network device of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 1100 may specifically be the mobile terminal/terminal of the embodiment of the present application, and the communication device 1100 may implement the corresponding processes implemented by the mobile terminal/terminal in each method of the embodiment of the present application. For the sake of brevity, in This will not be repeated here.

FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1200 shown in FIG. 12 includes a processor 1210, and the processor 1210 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 12 , the chip 1200 may further include a memory 1220 . Wherein, the processor 1210 can invoke and run a computer program from the memory 1220, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1220 may be an independent device independent of the processor 1210 , or may be integrated in the processor 1210 .

Optionally, the chip 1200 may also include an input interface 1230 . Wherein, the processor 1210 can control the input interface 1230 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1200 may also include an output interface 1240 . Wherein, the processor 1210 can control the output interface 1240 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal in the various methods of the embodiments of the present application. For the sake of brevity, no more repeat.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 13 is a schematic block diagram of a communication system 1300 provided by an embodiment of the present application. As shown in FIG. 13 , the communication system 1300 includes a terminal 1310 and a network device 1320 .

Wherein, the terminal 1310 can be used to realize the corresponding functions realized by the terminal in the above method, and the network device 1320 can be used to realize the corresponding functions realized by the network device in the above method. For the sake of brevity, details are not repeated here.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) And direct memory bus random access memory (DirectRambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the methods of the embodiments of the present application, for It is concise and will not be repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal in the methods of the embodiments of the present application. For the sake of brevity , which will not be repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal in the embodiments of the present application. When the computer program is run on the computer, the computer executes the corresponding functions implemented by the mobile terminal/terminal in the methods of the embodiments of the present application. For the sake of brevity, the process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (31)

1. A method of path selection, the method comprising:

the first terminal determines a transmission path corresponding to the service data according to a path selection rule, and sends the service data to the second terminal or the network on the transmission path; the path selection rule is configured for SMF or PCF; the path selection rule is used to determine at least one of: applying paths corresponding to the parameters; a path corresponding to the quality of service QoS; a path corresponding to the link quality;

the first terminal determines a transmission path corresponding to the service data according to a path selection rule, and the method comprises the following steps:

the path selection functional layer of the first terminal determines a transmission path corresponding to the service data according to a path selection rule;

wherein the path selection function layer is positioned above the IP layer; or the path selection function layer is positioned below the IP layer and above the AS layer; for the path selection related to the network direct connection path based on the N6 interface route, determining a transmission path corresponding to the service data through a path selection functional layer positioned above an IP layer; for the path selection related to the network internal path based on the core network route, the transmission path corresponding to the service data is determined by the path selection function layer below the IP layer and above the AS layer.

2. The method of claim 1, wherein in a scenario in which the first terminal communicates with the second terminal, transmission of traffic data between the first terminal and the second terminal is enabled through a first transmission path and a second transmission path;

the first transmission path is a transmission path based on a PC5 interface;

the second transmission path is a Uu interface-based transmission path.

3. The method of claim 2, wherein the first transmission path is a terminal direct path and the second transmission path is a network direct path based on N6 interface routing.

4. The method of claim 3, wherein,

under the condition that the transmission path corresponding to the service data is the terminal direct connection path, determining the target address of the service data according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the network direct connection path based on the N6 interface route, determining the target address of the service data according to the address of the application server on the N6 interface.

5. The method of claim 2, wherein the first transmission path is a terminal direct path and the second transmission path is a network internal path based on core network routing.

6. The method of claim 5, wherein,

under the condition that the transmission path corresponding to the service data is the terminal direct connection path, determining the target address of the service data according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the network internal path based on the core network route, determining the target address of the service data according to the address of the second terminal.

7. The method of claim 1, wherein in a scenario in which the first terminal communicates with the network, transmission of service data between the first terminal and the network is enabled through a third transmission path and a fourth transmission path;

the third transmission path is a Uu interface-based transmission path;

the fourth transmission path is a transmission path based on a PC5 interface and Uu interface.

8. The method of claim 7, wherein the third transmission path is a network direct path based on N6 interface routing and the fourth transmission path is a relay path based on a relay device.

9. The method of claim 8, wherein,

under the condition that the transmission path corresponding to the service data is the network direct connection path based on the N6 interface route, the target address of the service data is determined according to the address of an application server on the N6 interface;

And under the condition that the transmission path corresponding to the service data is the relay path based on the relay equipment, determining the target address of the service data according to the address of the second terminal.

10. The method of claim 7, wherein the third transmission path is a core network routing based network internal path and the fourth transmission path is a relay device based relay path.

11. The method of claim 10, wherein,

under the condition that the transmission path corresponding to the service data is the network internal path based on the core network route, the target address of the service data is determined according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the relay path based on the relay equipment, determining the target address of the service data according to the address of the second terminal.

12. The method of any of claims 1 to 11, wherein the application parameters include at least one of: application identification, port, source address, destination address, DNN, S-NSSAI.

13. The method of any of claims 1 to 11, wherein the QoS comprises at least one of: data rate, latency, reliability, QCI.

14. The method of any of claims 1 to 11, wherein the link quality comprises a mobility state.

15. A path selection device for use in a first terminal, the device comprising:

a determining unit, configured to determine a transmission path corresponding to the service data according to a path selection rule;

a transmitting unit configured to transmit the service data to a second terminal or a network on the transmission path; the path selection rule is configured for SMF or PCF; the path selection rule is used to determine at least one of: applying paths corresponding to the parameters; a path corresponding to the quality of service QoS; a path corresponding to the link quality;

the determining unit is used for determining a transmission path corresponding to the service data according to the path selection rule through the path selection functional layer;

wherein the path selection function layer is positioned above the IP layer; or the path selection function layer is positioned below the IP layer and above the AS layer; for the path selection related to the network direct connection path based on the N6 interface route, determining a transmission path corresponding to the service data through a path selection functional layer positioned above an IP layer; for the path selection related to the network internal path based on the core network route, the transmission path corresponding to the service data is determined by the path selection function layer below the IP layer and above the AS layer.

16. The apparatus of claim 15, wherein in a scenario in which the first terminal communicates with the second terminal, traffic data can be transmitted between the first terminal and the second terminal through a first transmission path and a second transmission path;

the first transmission path is a transmission path based on a PC5 interface;

the second transmission path is a Uu interface-based transmission path.

17. The apparatus of claim 16, wherein the first transmission path is a terminal direct path and the second transmission path is a network direct path based on N6 interface routing.

18. The apparatus of claim 17, wherein,

under the condition that the transmission path corresponding to the service data is the terminal direct connection path, determining the target address of the service data according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the network direct connection path based on the N6 interface route, determining the target address of the service data according to the address of the application server on the N6 interface.

19. The apparatus of claim 16, wherein the first transmission path is a terminal direct path and the second transmission path is a network internal path based on core network routing.

20. The apparatus of claim 19, wherein,

under the condition that the transmission path corresponding to the service data is the terminal direct connection path, determining the target address of the service data according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the network internal path based on the core network route, determining the target address of the service data according to the address of the second terminal.

21. The apparatus of claim 15, wherein in a scenario in which the first terminal communicates with the network, traffic data can be transmitted between the first terminal and the network through a third transmission path and a fourth transmission path;

the third transmission path is a Uu interface-based transmission path;

the fourth transmission path is a transmission path based on a PC5 interface and Uu interface.

22. The apparatus of claim 21, wherein the third transmission path is a network direct path based on N6 interface routing and the fourth transmission path is a relay path based on a relay device.

23. The apparatus of claim 22, wherein,

under the condition that the transmission path corresponding to the service data is the network direct connection path based on the N6 interface route, the target address of the service data is determined according to the address of an application server on the N6 interface;

And under the condition that the transmission path corresponding to the service data is the relay path based on the relay equipment, determining the target address of the service data according to the address of the second terminal.

24. The apparatus of claim 21, wherein the third transmission path is a core network routing based network internal path and the fourth transmission path is a relay device based relay path.

25. The apparatus of claim 24, wherein,

under the condition that the transmission path corresponding to the service data is the network internal path based on the core network route, the target address of the service data is determined according to the address of the second terminal;

and under the condition that the transmission path corresponding to the service data is the relay path based on the relay equipment, determining the target address of the service data according to the address of the second terminal.

26. The apparatus of any of claims 15 to 25, wherein the application parameters comprise at least one of: application identification, port, source address, destination address, DNN, S-NSSAI.

27. The apparatus of any of claims 15-25, wherein the QoS comprises at least one of: data rate, latency, reliability, QCI.

28. The apparatus of any of claims 15-25, wherein the link quality comprises a mobility state.

29. A terminal, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 14.

30. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 14.

31. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 14.

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