CN116250360A - A connection establishment method and device, and network equipment - Google Patents

Abstract

The embodiment of the application provides a connection establishment method, a connection establishment device and network equipment, wherein the method comprises the following steps: the network equipment establishes a first connection for a first service of the terminal equipment; wherein the attribute parameter of the first connection is determined based on an access technology of the terminal device.

Description

A connection establishment method and device, and network equipment technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a method and device for establishing a connection, and a network device.

Background technique

Satellite access is an important access technology, and terminal equipment can access ground base stations through satellites. Satellite access has the characteristics of wide coverage and extended time. The transmission delay of satellite access can be as high as hundreds of milliseconds. If the connection is established according to the current attribute parameters, the transmission performance will not meet the requirements of the attribute parameters.

Contents of the invention

Embodiments of the present application provide a method and device for establishing a connection, and a network device.

The method for establishing a connection provided in this embodiment of the application includes:

The network device establishes a first connection for the first service of the terminal device; wherein, the attribute parameters of the first connection are determined based on the access technology of the terminal device.

The device for establishing a connection provided in the embodiment of the present application is applied to a network device, and the device includes:

An establishing unit, configured to establish a first connection for a first service of the terminal device; wherein, the attribute parameters of the first connection are determined based on the access technology of the terminal device.

The network device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above connection establishment method.

The chip provided in the embodiment of the present application is used to implement the above method for establishing a connection.

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 method for establishing a connection.

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

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above method for establishing a connection.

The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above method for establishing a connection.

Through the above technical solution, when the network device establishes the first connection for the first service of the terminal device, the attribute parameters of the first connection are determined based on the access technology of the terminal device. Since the transmission performance corresponding to different access technologies has Therefore, it can be guaranteed that the transmission performance corresponding to the first connection can satisfy the attribute parameters of the first connection.

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 schematic diagram of satellite access provided by an embodiment of the present application;

Fig. 3 is a flow chart of the media negotiation process in the voice call establishment process provided by the embodiment of the present application;

FIG. 4 is a schematic flowchart of a method for establishing a connection provided in an embodiment of the present application;

FIG. 5 is a schematic flow diagram of the PCF determining the access technology of the terminal device provided by the embodiment of the present application;

FIG. 6 is a schematic flow diagram of the PCF triggering the establishment of a dedicated QoS flow provided by an embodiment of the present application;

FIG. 7 is a schematic flow diagram of a base station initiating a special air interface connection provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of the structural composition of a connection establishment device provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 11 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: Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex) , TDD), system, 5G communication system or future communication system, etc.

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 . As used herein, "terminal" includes, but is not limited to, a connection via a wired line, such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast 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 may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a Functional 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.

To facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.

Satellite access is an important access technology in the 5G system. Satellite access has the characteristics of wide coverage and extended time. The terminal equipment is connected to the ground base station through the satellite. As shown in Figure 2, the terminal equipment is connected to the satellite wireless access network, connected to the ground gateway through the satellite wireless access network, and then connected to the ground base station through the ground gateway. The base station is connected to the core network. It should be pointed out that the terrestrial base station and the terrestrial gateway in FIG. 2 may be co-located or separately located.

Satellite access is generally divided into low earth orbit (Low Earth Orbit, LEO) satellite access, medium earth orbit (Medium Earth Orbit, MEO) satellite access, and high orbit (Geosynchronous Equatorial Orbit, GEO) satellite access. The transmission delay of satellite access can reach the order of hundreds of milliseconds, which is very different from the transmission delay of traditional ground base station access. As an example, Table 1 below lists transmission delays corresponding to different satellite accesses. It should be noted that the transmission delay in Table 1 is only for illustration, and the actual transmission delay may be deviated.

Table 1

With reference to Fig. 3, Fig. 3 is the flowchart of media negotiation process (media negotiation process) in the voice call establishment process, comprises the following steps:

1. The calling UE initiates an invitation to the calling proxy call session control function entity (Proxy-Call Session Control Function, P-CSCF).

2. The calling P-CSCF initiates an invitation to the calling serving call session control function entity (Serving-Call Session Control Function, S-CSCF).

3. The calling S-CSCF performs service control.

4. The calling S-CSCF queries the called party to query the call session control function entity (Interrogating-Call Session Control Function, I-CSCF).

5. The calling S-CSCF initiates an invitation to the called I-CSCF.

6. The called I-CSCF queries the called S-CSCF.

7. The called I-CSCF initiates an invitation to the called S-CSCF.

8. The called S-CSCF performs service control.

9. The called S-CSCF initiates an invitation to the called P-CSCF.

10. The called P-CSCF initiates an invitation to the called UE.

11. The called UE sends a proposal response to the called P-CSCF.

12. The called P-CSCF authorizes the QoS resource.

13. The called P-CSCF sends a proposal response to the called S-CSCF.

14. The called S-CSCF sends a proposal response to the called I-CSCF.

15. The called I-CSCF sends a proposal response to the calling S-CSCF.

16. The calling S-CSCF sends a proposal response to the calling P-CSCF.

17. The calling P-CSCF authorizes the QoS resources.

18. The calling P-CSCF sends a proposal response to the calling UE.

19. The calling UE performs resource reservation.

In the above voice call establishment process, the IP Multimedia System (IP Multimedia Subsystem, IMS) needs to trigger the establishment of the Quality of Service (Quality of Service, QoS) flow to the core network, and the 5G QoS Identifier (5G QoS Identifier, 5QI) corresponding to the QoS flow ) takes a value of 1 (that is, 5QI=1). Specifically, in Step 12 and Step 17 shown in FIG. 3 , the P-CSCF in the IMS will trigger the establishment of the QoS flow of the voice service to the respective Policy Control Function (Policy Control Function, PCF). Wherein, the PCF judges that the establishment request is for the voice service according to the establishment request of the P-CSCF (the establishment request includes the identification information of the voice service), and thus triggers the establishment of a QoS flow with 5QI=1.

Table 2 shows the requirements of QoS parameters corresponding to different 5QI values, where the QoS parameters take Packet Delay Budget (PDB) and Packet Error Rate (Packet Error Rate, PER) as examples. The values of PDB and PER in Table 2 are given based on ground base station access. Among them, the QoS flow with 5QI=1 is used for the transmission of voice service, the QoS flow with 5QI=2 is used for the transmission of video service, and the QoS flow with 5QI=5 is used for the transmission of IMS signaling. The QoS flow with 5QI=5 will be established after the terminal device is registered; while the QoS flow with 5QI=1/2 will be established when the voice service/video service occurs, and will be released by the IMS when the service ends.

For the voice service, the 5QI value of the QoS flow is 1. It can be seen from Table 2 that in the case of ground base station access, the PDB requirement of the voice service (corresponding to 5QI=1) is 100 milliseconds, while the satellite access In the case of input, the transmission delay of the voice service is as high as hundreds of milliseconds, which cannot meet the PDB requirement of 5QI=1 shown in Table 2.

5QI priority level PDB PER 1 2 100 milliseconds ^10-2 2 4 150 milliseconds ^10-3 5 1 100 milliseconds ^10-6

Table 2

For satellite access, it is necessary to redefine the 5QI value of the voice service QoS flow or the requirements of QoS parameters (such as the value of PDB and the value of PER) to meet the QoS requirements of the voice service. For this reason, the technical solutions of the embodiments of the present application are proposed. The technical solutions of the embodiments of the present application will be described below.

It should be noted that the above-mentioned related technologies are described by taking the QoS flow of voice service as an example. The technical solution of the embodiment of the present application is not limited to the scenario of QoS flow of voice service. All QoS flows are applicable, for example: QoS flows of video services.

It should be noted that, in the above-mentioned related technologies, the QoS parameters are PDB and PER as an example for illustration. The technical solutions of the embodiments of the present application are not limited to PDB and PER, and other QoS parameters are also applicable, such as guaranteed stream bit rate ( Guaranteed Flow Bit Rate, GFBR), Maximum Flow Bit Rate (Maximum Flow Bit Rate, MFBR), Maximum Packet Loss Rate (Maximum Packet Loss Rate, MPLR), etc.

It should be noted that the technical solutions of the embodiments of the present application can be applied to any communication system, including but not limited to 5G system (5GS), 6G system (6GS), and the like.

Fig. 4 is a schematic flow diagram of a method for establishing a connection provided in an embodiment of the present application. As shown in Fig. 4, the method for establishing a connection includes the following steps:

Step 401: The network device establishes a first connection for the first service of the terminal device; wherein, the attribute parameters of the first connection are determined based on the access technology of the terminal device.

In the embodiment of the present application, the network device determines the access technology of the terminal device, determines the attribute parameter of the first connection to be established according to the access technology of the terminal device, and establishes the first connection according to the attribute parameter.

In this embodiment of the present application, the first connection is used to transmit the first service. In an optional manner, the first service includes at least one of the following: voice service and video service. Further, optionally, the voice service may be an IMS voice service, and the video service may be an IMS video service. It should be noted that the IMS voice service refers to the voice service triggered by the IMS, and the IMS video service refers to the video service triggered by the IMS.

In this embodiment of the present application, the first connection is a data plane connection or an air interface connection. Here, the data plane connection refers to the connection between the terminal device and the user plane network element of the core network. Taking 5GS as an example, the core network user plane element is UPF, and the data plane connection can be QoS flow. The air interface connection refers to the connection between the terminal equipment and the base station. Taking 5GS as an example, the base station is gNB, and the data plane connection is Data Radio Bearer (DRB). It should be noted that there is a mapping relationship between the data plane connection and the air interface connection, for example, one or more QoS flows can be mapped (or bound) to one DRB.

In an example, the first connection is a QoS flow of an IMS voice service or an air interface connection.

In an example, the first connection is a QoS flow of an IMS video service or an air interface connection.

In this embodiment of the present application, the network device may be a first core network element or a base station. In an optional manner, the network element of the first core network determines the attribute parameter of the QoS flow to be established according to the access technology of the terminal equipment, and establishes the QoS flow according to the attribute parameter. In another optional manner, the base station determines the attribute parameters of the air interface connection to be established according to the access technology of the terminal equipment, and establishes the air interface connection according to the attribute parameters. How to establish the first connection is described below in two cases.

Case 1: The network device is the first core network element

If the first core network element determines that the access technology of the terminal device is satellite access, the first core network element triggers the establishment of a first connection with a first attribute parameter; if the first The network element of the core network determines that the access technology of the terminal device is not satellite access, and the network element of the first core network triggers the establishment of the first connection with the second attribute parameter; wherein, the first attribute parameter and the All or part of the second attribute parameters are different.

In an alternative, the first attribute parameter is completely or partially different from the second attribute parameter, which means: the value of at least one of the following parameters in the first attribute parameter and the second attribute parameter Different: 5QI, PDB, PER.

In one example, taking 5GS as an example, the first core network element is a PCF, and if the PCF determines that the access technology of the terminal device is satellite access, it triggers the establishment of a QoS flow with the first attribute parameter; if the PCF If it is determined that the access technology of the terminal equipment is terrestrial base station access, the establishment of the QoS flow with the second attribute parameter is triggered. As an example, if the first service is a voice service, the first attribute parameter is 5QI=X1, the second attribute parameter is 5QI=1, X1 is a positive integer and X1 is not equal to 1, and the requirements of the QoS parameters corresponding to 5QI=X1 are the same as The requirements of the QoS parameters corresponding to 5QI=1 are different, for example, the values of PDB and/or PER corresponding to 5QI=X1 are different from the values of PDB and/or PER corresponding to 5QI=1. As an example, if the first service is a video service, the first attribute parameter is 5QI=X2, the second attribute parameter is 5QI=2, X2 is a positive integer and X2 is not equal to 2, and the requirements of the QoS parameters corresponding to 5QI=X2 are the same as The requirements of the QoS parameters corresponding to 5QI=2 are different, for example, the values of PDB and/or PER corresponding to 5QI=X2 are different from the values of PDB and/or PER corresponding to 5QI=2.

In one example, taking 5GS as an example, the first core network element is a PCF, and if the PCF determines that the access technology of the terminal device is satellite access, it triggers the establishment of a QoS flow with the first attribute parameter; if the PCF If it is determined that the access technology of the terminal equipment is terrestrial base station access, the establishment of the QoS flow with the second attribute parameter is triggered. As an example, if the first service is a voice service, the first attribute parameter includes: PDB=T1 milliseconds, PER=R1%, the second attribute parameter includes: PDB=100 milliseconds, PER=1%, wherein, T1 is not equal to 100 , R1 is not equal to 1. Optionally, T1 is greater than 100, such as T1=500, and R1 is greater than 1, such as R1=3. As an example, if the first service is a video service, the first attribute parameter includes: PDB=T2 milliseconds, PER=R2%, the second attribute parameter includes: PDB=150 milliseconds, PER=10%, wherein, T2 is not equal to 150 , R2 is not equal to 10, optionally, T2 is greater than 150, such as T2=800, and R2 is greater than 10, such as R2=15.

In the embodiment of this application, the network element of the first core network may, but is not limited to, determine the access technology of the terminal device in the following manner:

Way 1: The first core network element receives first indication information sent by the second core network element; where the first indication information is used to indicate whether the access technology of the terminal device is satellite access.

Taking 5GS as an example, the network element of the first core network is a PCF, and the network element of the second core network is an AMF. Specifically, the AMF sends first indication information to the PCF, where the first indication information is used to indicate whether the access technology of the terminal device is satellite access.

Method 2: The first core network element receives the first indication information sent by the second core network element via the third core network element; wherein, the first indication information is used to indicate the access of the terminal device Whether the technology is satellite access.

Taking 5GS as an example, the network element of the first core network is PCF, the network element of the third core network is SMF, and the network element of the second core network is AMF. Specifically, the AMF sends the first indication information to the PCF via the SMF, where the first indication information is used to indicate whether the access technology of the terminal device is satellite access.

In an optional manner, for the foregoing manner 1 or manner 2, before the first core network element receives the first indication information, the first core network element sends a message to the second core network element or the third core network element sends a first subscription message, and the first subscription message is used to indicate that the second core network element or the third core network element determines that the terminal device When the access technology is satellite access, the first indication information is sent to the first core network element. Taking 5GS as an example, the PCF sends the first subscription message to the AMF or SMF, and the AMF or SMF sends the first indication information to the PCF when it determines that the access technology of the terminal device is satellite access. If the PCF receives the first indication information, it can determine that the access technology of the terminal device is satellite access according to the first indication information; if the PCF does not receive the first indication information, the default is that the access technology of the terminal device is ground Base station access.

In the above solution, before the network element of the second core network sends the first indication information to the network element of the first core network, the access technology of the terminal device needs to be determined. The second core network element may determine the access technology of the terminal device in the following manner: the second core network element receives the first message sent by the base station, and the first message carries the first indication information and/or the area of the base station information; wherein, the first indication information is used to indicate whether the access technology of the terminal device is satellite access; the area information of the base station is used to determine whether the access technology of the terminal device connected to the base station is satellite access access.

In the above solution, the first message may be a message between the second core network element and the base station. Taking 5GS as an example, the first message is an N2 message. As an example, the N2 message may be an initial context setup (Initial Context Setup) message, or an initial context modification (Initial Context Modification) message, or a PDU session resource setup (PDU Session Resource Setup) message, or a PDU session resource modification (PDU Session Resource Modify) message, etc.

In an optional manner, the first message carries first indication information, and the network element of the second core network can determine whether the access technology of the terminal device is satellite access according to the first indication information.

In an optional manner, the first message carries the area information of the base station, and the network element of the second core network can determine whether the base station is connected to the terminal device through the satellite access network through the area information of the base station (that is, determine the location of the base station connected to the base station). Whether the access technology of the terminal equipment is satellite access).

Here, optionally, the area information of the base station includes at least one of the following: TAC, at least one cell identifier, and base station identifier. During specific implementation, specific area information can be assigned to the base station accessed by the satellite, so that it can be determined whether the base station is connected to the terminal device through the satellite access network through the area information of the base station.

For the first indication information in the above solution, in addition to indicating whether the access technology of the terminal device is satellite access, optionally, it is also used to indicate the type of satellite access. As an example, the satellite access type may be LEO satellite access, or MEO satellite access, or GEO satellite access.

In the embodiment of the present application, the network element of the first core network establishes the first connection of the first service based on the trigger of the IMS. Specifically, the first core network element receives a second message sent by the IMS, the second message carries the service identifier of the first service, and the second message is used to indicate that the first core network element Establish a first connection for the first service.

Taking 5GS as an example, the network element of the first core network is the PCF, and the PCF receives an Authorize/Authenticate-Request (AAR) message sent by the P-CSCF in the IMS, and the AAR message carries the information of the first service A service identifier, the second message is used to instruct the first core network element to establish a first connection for the first service, where the first service is, for example, a voice service or a video service.

Case 2: The network device is a base station

If the base station determines that the access technology of the terminal device is satellite access, the base station triggers the establishment of a first connection with a first attribute parameter; if the base station determines that the access technology of the terminal device is not satellite access access, the first core network element triggers the establishment of a first connection with a second attribute parameter; wherein the first attribute parameter is completely or partially different from the second attribute parameter.

In an alternative, the first attribute parameter is completely or partially different from the second attribute parameter, which means: the value of at least one of the following parameters in the first attribute parameter and the second attribute parameter Different: 5QI, PDB, PER.

It should be noted that the base station in the embodiment of the present application refers to a ground base station.

In one example, taking 5GS as an example, if the base station determines that the access technology of the terminal device is satellite access, it triggers the establishment of an air interface connection with the first attribute parameter; if the base station determines that the access technology of the terminal device is ground base station access input, triggers the establishment of an air interface connection with the second attribute parameter. As an example, if the first service is a voice service, the first attribute parameter is 5QI=X1, the second attribute parameter is 5QI=1, X1 is a positive integer and X1 is not equal to 1, and the requirements of the QoS parameters corresponding to 5QI=X1 are the same as The requirements of the QoS parameters corresponding to 5QI=1 are different, for example, the values of PDB and/or PER corresponding to 5QI=X1 are different from the values of PDB and/or PER corresponding to 5QI=1. As an example, if the first service is a video service, the first attribute parameter is 5QI=X2, the second attribute parameter is 5QI=2, X2 is a positive integer and X2 is not equal to 2, and the requirements of the QoS parameters corresponding to 5QI=X2 are the same as The requirements of the QoS parameters corresponding to 5QI=2 are different, for example, the values of PDB and/or PER corresponding to 5QI=X2 are different from the values of PDB and/or PER corresponding to 5QI=2.

In one example, taking 5GS as an example, if the base station determines that the access technology of the terminal device is satellite access, it triggers the establishment of an air interface connection with the first attribute parameter; if the base station determines that the access technology of the terminal device is ground base station access input, triggers the establishment of an air interface connection with the second attribute parameter. As an example, if the first service is a voice service, the first attribute parameter includes: PDB=T1 milliseconds, PER=R1%, the second attribute parameter includes: PDB=100 milliseconds, PER=1%, wherein, T1 is not equal to 100 , R1 is not equal to 1. Optionally, T1 is greater than 100, such as T1=500, and R1 is greater than 1, such as R1=3. As an example, if the first service is a video service, the first attribute parameter includes: PDB=T2 milliseconds, PER=R2%, the second attribute parameter includes: PDB=150 milliseconds, PER=10%, wherein, T2 is not equal to 150 , R2 is not equal to 10, optionally, T2 is greater than 150, such as T2=800, and R2 is greater than 10, such as R2=15.

In this embodiment of the application, the base station may, but is not limited to, determine the access technology of the terminal device in the following ways:

Way 1: The base station and the terminal equipment interact to determine whether the access technology of the terminal equipment is satellite access.

Method 2: The base station determines whether the access technology of the terminal device is satellite access according to its own area information. Here, optionally, the area information of the base station includes at least one of the following: TAC, at least one cell identifier, and base station identifier. During specific implementation, specific area information can be assigned to the base station accessed by the satellite, so that it can be determined whether the base station is connected to the terminal device through the satellite access network through the area information of the base station.

In the embodiment of the present application, the base station establishes the first connection based on a trigger of a network element of the first core network or a network element of the third core network. Specifically, the first core network element receives the second message sent by the IMS, the second message carries the service identifier of the first service, and the second message is used to indicate that the first core network element is the The first service establishes a first connection. As an example, for voice services, the first core network element initiates the establishment of a QoS flow with 5QI=1; for video services, the first core network element initiates the establishment of a QoS flow with 5QI=2; the first core The network element sends a QoS flow establishment request message to the base station, or the first core network element sends a QoS flow establishment request message to the base station via the third core network element. After the base station receives the establishment request message of the QoS flow sent by the network element of the first core network or the network element of the third core network, if the access technology of the terminal equipment is satellite access, trigger the establishment of the air interface connection with the first attribute parameter ; If the access technology of the terminal equipment is terrestrial base station access, triggering the establishment of an air interface connection with a second attribute parameter.

In the above solution, taking 5GS as an example, the network element of the first core network is a PCF, and the network element of the third core network is an SMF.

In an optional manner, when the base station triggers the establishment of the first connection with the first attribute parameter, the base station sends the second indication information to the first core network element; or, the base station sends the second indication information through the third The core network element sends second indication information to the first core network element; wherein, the second indication information is used to indicate at least one of the following: the access technology of the terminal device is satellite access; it has a second attribute The first connection with the first parameter cannot be established; the first connection with the first attribute parameter has already been established.

In the above solution, taking 5GS as an example, the network element of the first core network is a PCF, and the network element of the third core network is an SMF.

In an optional manner of the present application, if the base station determines that the access technology of the terminal device is satellite access, the base station does not trigger the establishment of the air interface connection with the first attribute parameter, but sends the first core The network element sends a rejection establishment message or sends a rejection establishment message to the first core network element through the third core network element. Optionally, the rejection establishment message carries a rejection reason value. As an example, the rejection reason value includes at least one of the following One: The access technology of the terminal device is satellite access; the air interface connection with the second attribute parameter cannot be established. After the first core network element receives the establishment rejection message, it re-triggers to initiate the establishment of the QoS flow of 5QI=X. As an example, for the voice service, the first core network element initiates the establishment of the QoS flow of 5QI=X1, X1 is not equal to 1; for the video service, the network element of the first core network initiates the establishment of a QoS flow with 5QI=X2, and X2 is not equal to 2.

The technical solutions of the embodiments of the present application are illustrated below in conjunction with specific application examples.

Application example 1

Referring to FIG. 5, FIG. 5 is a schematic flow diagram of the PCF determining the access technology of the terminal device, including the following steps:

Step 501: The terminal device is connected to the base station through satellite access.

Here, the base station refers to a ground base station. In an optional manner, the terminal equipment accesses the ground base station through a satellite. In another optional manner, the terminal device accesses the ground network element through the satellite, and connects to the ground base station through the ground network element.

Step 502: the base station notifies the AMF terminal device whether to access via satellite or not with an N2 message of the AMF mode.

Here, the N2 message is, for example, an initial context establishment message, or an initial context modification message, or a PDU session resource establishment message, or a PDU session resource modification message.

AFM can, but is not limited to, determine whether a terminal device is accessed via satellite in the following ways:

Mode 1: The AMF determines whether the terminal equipment connected to the base station accesses through the satellite through the area information of the base station (such as TAC and cell ID). During specific implementation, specific area information is allocated to base stations accessed through satellites. In this way, the AMF can determine whether terminal devices connected to the base station access through satellites according to the area information of the base stations.

Mode 2: The AMF determines whether the terminal device accesses through the satellite through the first indication information in the N2 message. Here, the first indication information is used to indicate whether the terminal device accesses via satellite. Further, optionally, the first indication information is also used to indicate the satellite access type. Here, the satellite access type is, for example, LEO satellite access, or MEO satellite access, or GEO satellite access.

Step 503a: The AMF sends the first indication information to the PCF via the SMF.

Here, the first indication information is used to indicate whether the terminal device accesses through a satellite, and further, optionally, the first indication information is also used to indicate a satellite access type. That is to say, the AMF indirectly informs the PCF whether the terminal equipment is accessed through the satellite through the SMF.

Step 504a: The AMF directly sends the first indication information to the PCF.

Here, the first indication information is used to indicate whether the terminal device accesses through a satellite, and further, optionally, the first indication information is also used to indicate a satellite access type. That is to say, the AMF directly informs the PCF whether the terminal equipment is accessed via satellite.

It should be noted that, the above step 503a and step 504a can be executed one or both, and in the case of both, the execution sequence of step 503a and step 504a is not limited.

Optionally, before steps 503a and 504a, the following steps are also included: PCF sends the first subscription message of "access technology change" to AMF or SMF, when AMF or SMF determines that the access technology of the terminal device is satellite access , sending the first indication information to the PCF.

Application example 2

Due to the high transmission delay of satellite access, the current QoS requirements for voice services/video services cannot be applied to satellite access scenarios, so new attribute parameters need to be introduced to trigger the establishment of dedicated QoS flows for PCF in satellite access scenarios use. The new attribute parameters include, for example: a new value of 5QI, or a new value of a QoS parameter. As an example, the value of a new QoS parameter may be a new value of a PDB or a new value of a PER.

Referring to Fig. 6, Fig. 6 is a schematic flow chart of PCF triggering the establishment of a dedicated QoS flow, as shown in Fig. 6, including the following steps:

Step 601: The PCF receives the AAR message sent by the P-CSCF.

Here, the AAR message includes the service identifier of the first service, and instructs the PCF to establish the QoS flow of the first service. As an example, the first service is a voice service or a video.

Step 602: If the access technology of the terminal device is satellite access, the PCF triggers the establishment of a dedicated QoS flow corresponding to satellite access.

Here, the PCF determines whether the access technology of the terminal device is satellite access, and reference may be made to the related description of the foregoing application example 1.

If the PCF determines that the terminal device accesses through the satellite, it initiates the establishment of a dedicated QoS flow corresponding to the satellite access. Taking the voice service as an example, the PCF initiates the establishment of a QoS flow with 5QI=X1, where X1 is not equal to 1. Taking the video service as an example, the PCF initiates the establishment of a QoS flow with 5QI=X2, where X2 is not equal to 2.

It should be noted that the value of the 5QI of the dedicated QoS flow corresponding to the satellite access is different from the value of the 5QI of the QoS flow corresponding to the ground base station. Moreover, due to the different values of 5QI, the QoS parameters of the dedicated QoS flow corresponding to the satellite access and the QoS parameters of the QoS flow corresponding to the ground base station access are also different. Taking the voice service as an example, the QoS parameters of the dedicated QoS flow corresponding to satellite access include: PDB = T1 milliseconds, PER = R1%, and the QoS parameters of the QoS flow corresponding to ground base station access include: PDB = 100 milliseconds, PER = 1%, where T1 is not equal to 100, and R1 is not equal to 1. Optionally, T1 is greater than 100, such as T1=500, and R1 is greater than 1, such as R1=3.

Step 603: The PCF sends the establishment request of the dedicated QoS flow to the base station via the SMF.

Step 604: An air interface connection is established between the base station and the terminal device.

Application example 3

Referring to FIG. 7, FIG. 7 is a schematic flow diagram of a base station initiating a special air interface connection, as shown in FIG. 7, including the following steps:

Step 701: The PCF receives the AAR message sent by the P-CSCF.

Here, the AAR message includes the service identifier of the first service, and instructs the PCF to establish the QoS flow of the first service. As an example, the first service is a voice service.

Step 702: The PCF initiates the establishment of a QoS flow with 5QI=1.

Step 703: The PCF sends a QoS flow establishment request to the base station via the SMF.

Here, optionally, the PCF also sends first indication information to the base station, where the first indication information is used to indicate whether the access technology of the terminal device is satellite access. Here, the PCF determines whether the access technology of the terminal device is satellite access, and reference may be made to the related description of the foregoing application example 1. As an example, the first indication information may be carried in the QoS flow establishment request message sent by the PCF.

Step 704: If the access technology of the terminal equipment is satellite access, the base station establishes a corresponding QoS flow and/or air interface connection.

Here, the base station can perceive whether the terminal device is connected to the base station through satellite access or the base station can also determine whether the terminal device is connected to the base station through satellite access through the first indication information sent by the PCF. If the terminal device is connected to the base station through satellite access, the base station establishes the QoS flow and/or air interface connection corresponding to the satellite access, wherein the QoS flow corresponding to the satellite access and/or the QoS parameters of the air interface connection correspond to the ground base station access The QoS parameters of different QoS flows and/or air interface connections are different.

Taking the voice service as an example, the QoS parameters of the QoS flow corresponding to the satellite access and/or the QoS parameters of the air interface connection include: PDB=T1 milliseconds, PER=R1%, and the QoS flow corresponding to the ground base station access and/or the air interface connection QoS parameters (that is, QoS parameters corresponding to 5QI=1) include: PDB=100 milliseconds, PER=1%, wherein, T1 is not equal to 100, R1 is not equal to 1, optionally, T1 is greater than 100, such as T1=500, R1 greater than 1, for example R1=3.

Step 705: the base station sends second indication information to the SMF or PCF.

It should be noted that step 705 is an optional step.

Here, the second indication information is used to indicate at least one of the following: the terminal device accesses via satellite; the QoS flow with 5QI=1 cannot be established; the base station uses a QoS parameter different from that of 5QI=1 to establish an air interface connection.

Step 706: An air interface connection is established between the base station and the terminal device.

It should be noted that step 705 and step 706 do not limit the order of execution, and may be executed simultaneously or sequentially, for example, step 705 is executed first, and then step 706 is executed, or step 706 is executed first, and then step 705 is executed.

The technical solution of the embodiment of this application makes full use of the existing mechanism, and realizes the establishment of the first connection of the first service in the satellite access scenario by extending the attribute parameters of the first connection, so that the first service can be used in the satellite access scenario. The next went smoothly.

FIG. 8 is a schematic diagram of the structure and composition of the connection establishment device provided by the embodiment of the present application, which is applied to network equipment. As shown in FIG. 8, the connection establishment device includes:

The establishing unit 801 is configured to establish a first connection for a first service of a terminal device; wherein, attribute parameters of the first connection are determined based on an access technology of the terminal device.

In an optional manner, the device also includes:

A determining unit 802, configured to determine the access technology of the terminal device.

In an optional manner, the network device is a first core network element; the device further includes:

The receiving unit 803 is configured to receive the first indication information sent by the network element of the second core network; or receive the first indication information sent by the network element of the second core network through the network element of the third core network;

Wherein, the first indication information is used to indicate whether the access technology of the terminal device is satellite access.

In an optional manner, the device also includes:

A sending unit 804, configured to send a first subscription message to the second core network element or the third core network element, where the first subscription message is used to indicate that the second core network element or the The third core network element sends the first indication information to the first core network element when it is determined that the access technology of the terminal device is satellite access.

In an optional manner, a first message is sent by the base station to the network element of the second core network, where the first message carries first indication information and/or area information of the base station;

Wherein, the first indication information is used to indicate whether the access technology of the terminal device is satellite access; the area information of the base station is used to determine whether the access technology of the terminal device connected to the base station is satellite access .

In an optional manner, the area information of the base station includes a TAC and/or at least one cell identifier.

In an optional manner, the first indication information is also used to indicate a satellite access type.

In an optional manner, the receiving unit 803 is further configured to receive a second message sent by the IMS, the second message carries the service identifier of the first service, and the second message is used to indicate that the first service A core network element establishes a first connection for the first service.

In an optional manner, if the determining unit 802 determines that the access technology of the terminal device is satellite access, the establishing unit 801 triggers the establishment of the first connection with the first attribute parameter;

If the determining unit 802 determines that the access technology of the terminal device is not satellite access, the establishing unit 801 triggers the establishment of the first connection with the second attribute parameter;

Wherein, the first attribute parameter is totally or partially different from the second attribute parameter.

In an optional manner, the first connection is a data plane connection.

In an optional manner, the network device is a base station;

The determining unit 802 is configured to determine whether the access technology of the terminal device is satellite access.

In an optional manner, the device also includes:

The receiving unit 803 is configured to receive a first connection establishment request message sent by the first core network element or the third core network element.

In an optional manner, if the determining unit 802 determines that the access technology of the terminal device is satellite access, the establishing unit 801 triggers the establishment of the first connection with the first attribute parameter;

If the determining unit 802 determines that the access technology of the terminal device is not satellite access, the establishing unit 801 triggers the establishment of the first connection with the second attribute parameter;

Wherein, the first attribute parameter is totally or partially different from the second attribute parameter.

In an optional manner, the device also includes:

The sending unit 804 is configured to send the second indication information to the first core network element; or, send the second indication information to the first core network element through the third core network element;

Wherein, the second indication information is used to indicate at least one of the following:

The access technology of the terminal equipment is satellite access;

the first connection with the second attribute parameter cannot be established;

A first connection with a first attribute parameter has been established.

In an optional manner, the first connection is an air interface connection.

In an optional manner, the first attribute parameter is completely or partially different from the second attribute parameter, which means:

The value of at least one of the following parameters among the first attribute parameter and the second attribute parameter is different: 5QI, PDB, PER.

In an optional manner, the first service includes at least one of the following: voice service and video service.

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

FIG. 9 is a schematic structural diagram of a communication device 900 provided by an embodiment of the present application. The communication device can be a terminal device or a network device. The communication device 900 shown in FIG. 9 includes a processor 910, and the processor 910 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. 9 , the communication device 900 may further include a memory 920 . Wherein, the processor 910 can invoke and run a computer program from the memory 920, so as to implement the method in the embodiment of the present application.

Wherein, the memory 920 may be an independent device independent of the processor 910 , or may be integrated in the processor 910 .

Optionally, as shown in FIG. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 930 may include a transmitter and a receiver. The transceiver 930 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 900 may specifically be the network device of the embodiment of the present application, and the communication device 900 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 900 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 900 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 10 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 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. 10 , the chip 1000 may further include a memory 1020 . Wherein, the processor 1010 can invoke and run a computer program from the memory 1020, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1020 may be an independent device independent of the processor 1010 , or may be integrated in the processor 1010 .

Optionally, the chip 1000 may also include an input interface 1030 . Wherein, the processor 1010 can control the input interface 1030 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1000 may also include an output interface 1040 . Wherein, the processor 1010 can control the output interface 1040 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 device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

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. 11 is a schematic block diagram of a communication system 1100 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 1100 includes a terminal device 1110 and a network device 1120 .

Wherein, the terminal device 1110 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 1120 can be used to realize the corresponding functions realized by the network device in the above method. .

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 available Program 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 (Direct Rambus 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 device 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 device in the various methods of the embodiments of the present application , for the sake of brevity, it is not 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 device 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 device in the methods of the embodiments of the present application, For the sake of brevity, details are not 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 device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding 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 (39)

1. A method of connection establishment, the method comprising:

   the network equipment establishes a first connection for a first service of the terminal equipment; wherein the attribute parameter of the first connection is determined based on an access technology of the terminal device.
2. The method of claim 1, wherein the method further comprises:

   the network device determines an access technology of the terminal device.
3. The method of claim 2, wherein the network device is a first core network element;

   the network device determining an access technology of the terminal device, comprising:

   the first core network element receives first indication information sent by a second core network element; or,

   the first core network element receives first indication information sent by the second core network element through the third core network element;

   The first indication information is used for indicating whether the access technology of the terminal equipment is satellite access or not.
4. A method according to claim 3, wherein before the first core network element receives the first indication information, the method further comprises:

   the first core network element sends a first subscription message to the second core network element or the third core network element, where the first subscription message is used to instruct the second core network element or the third core network element to send the first instruction information to the first core network element when determining that the access technology of the terminal device is satellite access.
5. The method according to claim 3 or 4, wherein the method further comprises:

   the second core network element receives a first message sent by a base station, wherein the first message carries first indication information and/or area information of the base station;

   the first indication information is used for indicating whether the access technology of the terminal equipment is satellite access or not; the area information of the base station is used for determining whether the access technology of the terminal equipment connected with the base station is satellite access.
6. The method of claim 5, wherein the area information of the base station comprises a tracking area code TAC and/or at least one cell identity.
7. The method of any of claims 3 to 6, wherein the first indication information is further used to indicate a satellite access type.
8. The method of any of claims 3 to 7, wherein the method further comprises:

   the first core network element receives a second message sent by the IP multimedia system IMS, wherein the second message carries the service identifier of the first service, and the second message is used for indicating the first core network element to establish a first connection for the first service.
9. The method according to any of claims 3 to 8, wherein the network device establishes a first connection for a first service of a terminal device, comprising:

   if the first core network element determines that the access technology of the terminal equipment is satellite access, the first core network element triggers the establishment of a first connection with a first attribute parameter;

   if the first core network element determines that the access technology of the terminal equipment is not satellite access, the first core network element triggers the establishment of a first connection with a second attribute parameter;

   wherein the first attribute parameter is wholly or partially different from the second attribute parameter.
10. The method of any of claims 3 to 9, wherein the first connection is a data plane connection.
11. The method of claim 2, wherein the network device is a base station;

    the network device determining an access technology of the terminal device, comprising:

    the base station determines whether the access technology of the terminal device is satellite access.
12. The method of claim 11, wherein the method further comprises:

    the base station receives a first connection establishment request message sent by a first core network element or a third core network element.
13. The method according to claim 11 or 12, wherein the network device establishes a first connection for a first service of a terminal device, comprising:

    if the base station determines that the access technology of the terminal equipment is satellite access, the base station triggers the establishment of a first connection with a first attribute parameter;

    if the base station determines that the access technology of the terminal equipment is not satellite access, the first core network element triggers the establishment of a first connection with a second attribute parameter;

    wherein the first attribute parameter is wholly or partially different from the second attribute parameter.
14. The method of claim 13, wherein in case the base station triggers the establishment of a first connection with a first attribute parameter, the method further comprises:

    the base station sends second indication information to a first core network element; or,

    the base station sends second indication information to the first core network element through a third core network element;

    wherein the second indication information is used for indicating at least one of the following:

    the access technology of the terminal equipment is satellite access;

    the first connection with the second attribute parameter cannot be established;

    a first connection having a first attribute parameter has been established.
15. The method of any of claims 11 to 14, wherein the first connection is an air interface connection.
16. The method according to claim 9 or 13, wherein the first attribute parameter is wholly or partly different from the second attribute parameter, meaning:

    the first attribute parameter and the second attribute parameter are different in value of at least one of the following parameters: the 5G quality of service identifies 5QI, packet delay budget PDB, packet error rate PER.
17. The method of any of claims 1-16, wherein the first traffic comprises at least one of: voice traffic, video traffic.
18. A connection establishment apparatus for use with a network device, the apparatus comprising:

    the establishing unit is used for establishing a first connection for a first service of the terminal equipment; wherein the attribute parameter of the first connection is determined based on an access technology of the terminal device.
19. The apparatus of claim 18, wherein the apparatus further comprises:

    and the determining unit is used for determining the access technology of the terminal equipment.
20. The apparatus of claim 19, wherein the network device is a first core network element; the apparatus further comprises:

    a receiving unit, configured to receive first indication information sent by a second core network element; or receiving the first indication information sent by the second core network element through the third core network element;

    the first indication information is used for indicating whether the access technology of the terminal equipment is satellite access or not.
21. The apparatus of claim 20, wherein the apparatus further comprises:

    a sending unit, configured to send a first subscription message to the second core network element or the third core network element, where the first subscription message is used to instruct the second core network element or the third core network element to send the first instruction information to the first core network element when determining that the access technology of the terminal device is satellite access.
22. The apparatus of claim 20 or 21, wherein a first message is sent by a base station to the second core network element, the first message carrying first indication information and/or region information of the base station;

    the first indication information is used for indicating whether the access technology of the terminal equipment is satellite access or not; the area information of the base station is used for determining whether the access technology of the terminal equipment connected with the base station is satellite access.
23. The apparatus of claim 22, wherein the region information of the base station comprises TAC and/or at least one cell identity.
24. The apparatus of any of claims 20 to 23, wherein the first indication information is further for indicating a satellite access type.
25. The apparatus according to any one of claims 20 to 24, wherein the receiving unit is further configured to receive a second message sent by the IMS, where the second message carries a service identifier of the first service, and the second message is configured to instruct the first core network element to establish a first connection for the first service.
26. The apparatus of any one of claims 20 to 25, wherein,

    if the determining unit determines that the access technology of the terminal equipment is satellite access, the establishing unit triggers the establishment of a first connection with a first attribute parameter;

    If the determining unit determines that the access technology of the terminal equipment is not satellite access, the establishing unit triggers the establishment of a first connection with a second attribute parameter;

    wherein the first attribute parameter is wholly or partially different from the second attribute parameter.
27. The apparatus of any of claims 20 to 26, wherein the first connection is a data plane connection.
28. The apparatus of claim 19, wherein the network device is a base station;

    the determining unit is configured to determine whether an access technology of the terminal device is satellite access.
29. The apparatus of claim 28, wherein the apparatus further comprises:

    and the receiving unit is used for receiving the first connection establishment request message sent by the first core network element or the third core network element.
30. The apparatus of claim 28 or 29, wherein,

    if the determining unit determines that the access technology of the terminal equipment is satellite access, the establishing unit triggers the establishment of a first connection with a first attribute parameter;

    if the determining unit determines that the access technology of the terminal equipment is not satellite access, the establishing unit triggers the establishment of a first connection with a second attribute parameter;

    Wherein the first attribute parameter is wholly or partially different from the second attribute parameter.
31. The apparatus of claim 30, wherein the apparatus further comprises:

    a sending unit, configured to send second indication information to a first core network element; or, sending the second indication information to the first core network element through the third core network element;

    wherein the second indication information is used for indicating at least one of the following:

    the access technology of the terminal equipment is satellite access;

    the first connection with the second attribute parameter cannot be established;

    a first connection having a first attribute parameter has been established.
32. The apparatus of any one of claims 28 to 31, wherein the first connection is an air interface connection.
33. The apparatus of claim 26 or 30, wherein the first attribute parameter is wholly or partially different from the second attribute parameter by:

    the first attribute parameter and the second attribute parameter are different in value of at least one of the following parameters: 5QI, PDB, PER.
34. The apparatus of any of claims 18-33, wherein the first traffic comprises at least one of: voice traffic, video traffic.
35. A network device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method of any of claims 1 to 17.
36. 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 17.
37. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 17.
38. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.
39. A computer program which causes a computer to perform the method of any one of claims 1 to 17.

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