WO2024022370A1

WO2024022370A1 - Information acquisition and transmission methods, server access and session establishment methods, and device

Info

Publication number: WO2024022370A1
Application number: PCT/CN2023/109246
Authority: WO
Inventors: 吕华章; 李欢; 孙晓文
Original assignee: 维沃移动通信有限公司
Priority date: 2022-07-29
Filing date: 2023-07-26
Publication date: 2024-02-01
Also published as: CN117528831A

Abstract

The present application belongs to the technical field of communication, and embodiments of the present application disclose information acquisition and sending methods, server access and session establishment methods, and a device. The information acquisition method comprises: a first communication device sends a first request, the first request being used for requesting to acquire first information; the first communication device receives the first information, the first information being associated with a PLMN identifier, and the first information being used for providing at least one of the following: a mapping relationship between second information and a second DNAI; a mapping relationship between the second information and index information of a second communication device; and the second DNAI; wherein the first communication device belongs to a first operator, the second communication device belongs to a second operator, and the second information and/or the second DNAI are related to the second operator or provided by the second operator.

Description

Information acquisition and transmission methods, server access and session establishment methods and devices

cross reference

This invention requires the priority of a Chinese patent application submitted to the China Patent Office on July 29, 2022, with the application number 202210908426.1 and the invention name "Information acquisition and transmission method, server access and session establishment method and equipment". The application's The entire contents are incorporated herein by reference.

Technical field

This application belongs to the field of communication technology, and specifically relates to an information acquisition and sending method, server access and session establishment method and equipment.

Background technique

As shown in Figure 2, an edge application server is deployed in operator A. The edge application server can provide edge computing services, such as some edge applications or edge capability exposure. It can be understood that the terminal belonging to operator A can access this edge application server through operator A's radio access network (Radio Access Network, RAN) and user plane function (User Plane Function, UPF). However, for the terminal belonging to operator B, since operator B does not deploy an edge application server locally, if the terminal wants to use edge computing services, it must access or access the edge application server of operator A. However, the relevant technology does not provide a relevant solution for cross-operator communication, which affects the communication performance of the terminal.

Contents of the invention

Embodiments of the present application provide an information acquisition and transmission method, server access and session establishment method and device, which can solve the problem of terminals being unable to communicate across operators and affecting the communication performance of the terminal.

In a first aspect, an information acquisition method is provided, including: a first communication device sending a first request, the first request being used to request acquisition of first information; the first communication device receiving the first information, The first information is associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device; DNAI; wherein the first communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or by the second operator. Provided by the second operator.

In a second aspect, a server access method is provided, including: the second communication device receives from Based on the third request of the first communication device; the second communication device selects a user plane based on the third request; wherein the user plane supports access to the edge application server of the second operator, and the first The communication device belongs to the first operator, and the second communication device belongs to the second operator.

In a third aspect, an information sending method is provided, including: a third communication device sending first information; wherein the first information is associated with a PLMN identity, and the first information is used to provide at least one of the following: second The mapping relationship between the information and the second DNAI; the mapping relationship between the second information and the index information of the second communication device; the second DNAI; the third communication device belongs to the first operator, and the second communication device belongs to the second operator The second information and/or the second DNAI are related to or provided by the second operator.

In a fourth aspect, an information sending method is provided, including: a fourth communication device receiving a first request, the first request being used to request acquisition of first information; the fourth communication device sending the first information; wherein , the first information is associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device; second DNAI; the fourth communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the second DNAI is related to or by the second operator Provided by the second operator.

In a fifth aspect, a session establishment method is provided, including: a terminal performing a first operation, the first operation including at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session matching application traffic based on URSP rules ; Send a fourth request, the fourth request is used to establish a PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to the first operator.

In a sixth aspect, an information acquisition device is provided, applied to a first communication device, including: a sending module, used to send a first request, the first request is used to request to obtain the first information; a receiving module, used to receive The first information, the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; an index of the second information and the second communication device Mapping relationship of information; second DNAI; wherein, the first communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the second DNAI, and Related to or provided by the second operator.

In a seventh aspect, a server access device is provided, applied to a second communication device, including: a receiving module for receiving a third request from the first communication device; and a processing module for performing processing based on the third request. Selection of the user plane; wherein the user plane supports access to the edge application server of the second operator, the first communication device belongs to the first operator, and the second communication device belongs to the second operator.

In an eighth aspect, an information sending device is provided, applied to a third communication device, including: a sending module, configured to send first information; wherein the first information is associated with a PLMN identifier, and the The first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device; the second DNAI; the third communication device belongs to the first Operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator.

In a ninth aspect, an information sending device is provided, applied to a fourth communication device, including: a receiving module, used to receive a first request, the first request is used to request to obtain first information; and a sending module, used to send The first information; wherein the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; the second information and the second communication device The mapping relationship of the index information; the second DNAI; the fourth communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the second DNAI, and Related to or provided by the second operator.

In a tenth aspect, a session establishment device is provided, applied to a terminal, including: a communication module, configured to perform a first operation, the first operation including at least one of the following: triggering a fourth request based on URSP rules; Determine a PDU session that matches the application traffic; send a fourth request, the fourth request is used to establish a PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to Describe the first operator.

In an eleventh aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the following is implemented: The steps of the method described in the fifth aspect.

In a twelfth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to perform a first operation, and the first operation includes at least one of the following: triggering a fourth request based on a URSP rule; Determine a PDU session that matches the application traffic based on URSP rules; send a fourth request, the fourth request is used to establish a PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal Belong to the first operator.

In a thirteenth aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are used by the processor. When executed, the steps of the method described in any one of the first to fourth aspects are implemented.

In a fourteenth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor and the communication interface are used to implement the method described in any one of the first to fourth aspects. step.

In a fifteenth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the implementation is as described in any one of the first to fifth aspects. steps of the method.

In a sixteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the first The steps of the method described in any one of the aspects to the fifth aspect.

In a seventeenth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect to the third aspect. The steps of the method described in any of the five aspects.

In this embodiment of the present application, the first communication device receives the first information associated with the PLMN identity, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; the second information and the second communication The mapping relationship of the index information of the device; the second DNAI, wherein the first communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the second DNAI, associated with or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information in the second operator, the second DNAI, the second communication device and other information to the first communication device in the first operator, so as to facilitate the first communication device to understand the information. Then, communication with the second operator can be realized, which is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

Description of drawings

Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

Figure 2 is a schematic diagram in the prior art of a terminal wishing to access a server in a destination operator;

Figure 3 is a schematic flow chart of an information acquisition method according to an embodiment of the present application;

Figure 4 is a schematic flow chart of a server access method according to an embodiment of the present application;

Figure 5 is a schematic flow chart of an information sending method according to an embodiment of the present application;

Figure 6 is a schematic flow chart of an information sending method according to an embodiment of the present application;

Figure 7 is a schematic flow chart of a session establishment method according to an embodiment of the present application;

Figure 8 is a schematic flow chart of an information sending method according to an embodiment of the present application;

Figure 9 is a schematic flow chart of an information acquisition method according to an embodiment of the present application;

Figure 10 is a schematic flow chart of a server access method according to an embodiment of the present application;

Figure 11 is a schematic flow chart of a session establishment method according to an embodiment of the present application;

Figure 12 is a schematic structural diagram of an information acquisition device according to an embodiment of the present application;

Figure 13 is a schematic structural diagram of a server access device according to an embodiment of the present application;

Figure 14 is a schematic structural diagram of an information sending device according to an embodiment of the present application;

Figure 15 is a schematic structural diagram of an information sending device according to an embodiment of the present application;

Figure 16 is a schematic structural diagram of a session establishment device according to an embodiment of the present application;

Figure 17 is a schematic structural diagram of a communication device according to an embodiment of the present application;

Figure 18 is a schematic structural diagram of a terminal according to an embodiment of the present application;

Figure 19 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying 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 those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th ^generation Generation, 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , Vehicle User Equipment (VUE), Pedestrian User Equipment (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal Terminal devices such as computer (PC), teller machine or self-service machine, wearable devices include: smart watches, smart bracelets, Smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless device. access network unit. Access network equipment may include a base station, a Wireless Local Area Network (WLAN) access point or a WiFi node, etc. The base station may be called a Node B, an evolved Node B (eNB), an access point, or a base station. Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, Transmitting Receiving Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only The base station in the NR system is taken as an example for introduction, and the specific type of base station is not limited. The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiment of this application, only the core network equipment in the NR system is used as an example for introduction, and the specific type of the core network equipment is not limited.

The information acquisition and sending methods, server access and session establishment methods provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

As shown in Figure 3, the embodiment of the present application provides an information acquisition method 300. The method can be executed by the first communication device. In other words, the method can be executed by software or hardware installed on the first communication device. The method includes Follow the steps below.

S302: The first communication device sends a first request, where the first request is used to request acquisition of first information.

S304: The first communication device receives the first information, and the first information is related to the public land The mobile network (Public Land Mobile Network, PLMN) identification (Identity, ID) is associated, and the first information is used to provide at least one of the following: the second information and the second Data Network Access Identity (DNAI) The mapping relationship between the second information and the index information of the second communication device; the second DNAI.

Wherein, the first communication device belongs to a first operator, the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to the second operator or is provided by the second operator. Provided by the operator.

It should be noted that the first operator mentioned in various embodiments of this application may refer to the operator corresponding to the first PLMN ID; the second operator may refer to the operator corresponding to the second PLMN ID, where, PLMN ID identifies an operator network, and the first PLMN ID is different from the second PLMN ID. It can be understood that the first PLMN ID is the ID of the first PLMN, and the second PLMN is the ID of the second PLMN.

In various embodiments of the present application, the first communication device may be a first session management function (Session Management Function, SMF) or a policy control function (Policy Control Function, PCF), and the first communication device belongs to the first operation The first operator may be the operator where the terminal is located, and the first operator may be called operator B in the future. It can be understood that the first PLMN is the terminal's home PLMN (Home PLMN, HPLMN).

In this embodiment, the first communication device can send a first request to the Network Exposure Function (NEF), so that the NEF can interact with the Unified Data Repository (UDR) to obtain the first information, and then the NEF Send first information to the first communication device. Among them, the first information stored in the UDR can be provided by an application function (Application Function, AF), and the AF can obtain the first information from the second operator.

For example, the first communication device sends a mapping relationship subscription request or mapping relationship acquisition request to NEF, that is, the first request: Nnef_EASDeployment_Subscribe or Nnef_EASDeployment_Get. The request is used to obtain the first information. Therefore, in the first request, Can carry at least one of the following parameters to indicate obtaining the first information, including: the second PLMN ID, the first PLMN ID, the first data network name (Data Network Name, DNN), the first single network slice selection auxiliary information ( Single Network Slice Selection Assistance Information, S-NSSAI), second DNN, second S-NSSAI, (queried through the Domain Name System (Domain Name Server, DNS) server and forwarded to the first communication device by EASDF) server Internet Protocol (IP) address or FQDN of the server, terminal IP address, terminal location information, such as the tracking area identifier (TAI) where the terminal is located, the cell ID (cell ID) where the terminal is located, etc. ).

Then, after the NEF receives the mapping relationship subscription request or the mapping relationship acquisition request, NEF sends the mapping relationship subscription request or the mapping relationship acquisition request, that is, NEF sends the first request to the first request. Four communication devices UDR, used to request the first information from the UDR. For example, NEF sends Nudr_DM_Query Request to UDR to query or obtain the first information. The first request includes at least one of the following parameters: second PLMN ID, first PLMN ID, first DNN, first S-NSSAI, second DNN, second S-NSSAI, (queried through DNS server and forwarded to the first communication device by EASDF) the IP address of the server or the FQDN of the server, the terminal IP address, the terminal location information, such as the TAI where the terminal is located, the cell ID where the terminal is located, etc.

The fourth communication device UDR, after finding the first information according to the first request, sends the first information to NEF through: Nudr_DM_Query Response, and then NEF sends the first information to the third through Nnef_EASDeployment_Notify or Nnef_EASDeployment_Get response. A communication device, such as a first SMF.

The first information is associated with the PLMN identity. In this embodiment, for example, the first information is associated with the PLMN identity of the second operator. The first information may be provided by the second operator to the first operator. The second operator It may be the terminal destination operator (or also known as the roaming location operator), and the second operator may be later referred to as operator A.

The first information is used to provide at least one of the following:

1) Mapping relationship between the second information and the second Data Network Access Identity (DNAI).

In this embodiment, after receiving part or all of the second information (hereinafter referred to as third information), the first communication device can determine the second DNAI according to the above mapping relationship. For example, when the first communication device receives the IP address or fully qualified domain name (Fully Qualified Domain Name, FQDN) of the second operator's application server, it simultaneously The second DNAI of the second operator can also be determined based on the first information. After the first communication device determines the second DNAI, it can also trigger the second communication device in the second operator to select a user plane according to the second DNAI and configure routing rules, wherein the user plane supports access to the second DNAI. Edge application servers in operators facilitate cross-operator communication.

2) Mapping relationship between the second information and the index information of the second communication device.

In this embodiment, the second communication device may be a second SMF, and the second communication device belongs to the second operator. The index information of the second communication device may be used by the first communication device to trigger the second communication device to select a user plane based on the second DNAI, wherein access to the second operation is supported through the user plane edge application servers in the business to facilitate cross-operator communication. For example, after the first communication device determines the second DNAI, it can determine that the second DNAI is related to the second operator based on this mapping relationship, and that the second DNAI is related to the second communication device. According to the indication of the first information, the second communication device may perform operations such as selecting the user plane according to the second DNAI. Therefore, according to this mapping relationship, it can be obtained from the second DNAI and the second The index information of the communication device directly determines the IP address of the second communication device. Then, the first communication device can trigger the second communication device in the second operator to make a user plane selection and configuration request, for example, trigger the second communication device in the second operator to select the user plane according to the second DNAI, Configure routing rules.

3) Second DNAI.

Since the second DNAI is associated with or provided by the second operator, it is usually not understandable by the first communication device of the first operator. Or, when the first operator receives any piece of the second information, the first operator does not know the DNAI corresponding to the information, and therefore is unable to perform subsequent operations. This embodiment can indicate through the first information that all parameters listed in the second information are equivalent to the second DNAI. For example, on the one hand, it indicates that the second DNAI is related to the second operator, so that the first communication The device can understand the second DNAI, and further understand that the second DNAI belongs to the second operator, and can further trigger the second communication device in the second operator to select the user plane and configure routing rules based on the second DNAI. On the other hand, When the first operator receives at least one of the second information, according to the first information, some or all of the information in the second information can be converted into the corresponding second information according to the mapping relationship indicated by the first information. DNAI. For example, when the first communication device receives a server IP address (the server IP address can be obtained through the DNS response forwarded by EASDF), the first communication device does not know which DNAI corresponds to the server IP address. , the first information can indicate what the second DNAI corresponding to the IP address is, and that the second DNAI belongs to the second operator, and can also be directly based on the index information of the second communication device indicated in the first information. Send the second DNAI to the second communication device to perform user plane selection within the second operator to support access to the edge application server in the second operator (the IP address of the edge application server is the second The server IP address in the DNS response received by the communication device from EASDF), etc., to facilitate cross-operator communication.

The information acquisition method provided by the embodiment of the present application receives the first information associated with the PLMN identifier through the first communication device, and the first information is used to provide at least one of the following: the mapping relationship between the second information and the second DNAI; the second information The mapping relationship with the index information of the second communication device; the second DNAI, wherein the first communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or The second DNAI is related to or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information in the second operator, the second DNAI, the second communication device and other information to the first communication device in the first operator, so as to facilitate the first communication device to understand the information. Then, communication with the second operator can be realized, which is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

Optionally, based on the embodiment shown in FIG. 3, the method further includes: the first communication device maps the received third information to the third information corresponding to the third information according to the first information. The second DNAI, or, based on the received third information, determine the third information corresponding to the third information. Index information of two communication devices; wherein the third information is included in the second information.

In this embodiment, the third information may come from a terminal, and the terminal belongs to the first operator. The third information may be part or all of the second information. For example, the second information includes the FQDN and the IP address, and the third information received by the terminal only includes the FQDN. Since the third information belongs to the second information, in this way, after receiving the third information, the first communication device can determine the second DNAI according to the mapping relationship between the second information and the second DNAI in the first information, For another example, the second communication device is determined according to the mapping relationship between the second information in the first information and the index information of the second communication device, and so on.

In this embodiment, the third information may be relevant information sent to the SMF from the EASDF edge server discovery function. For example, the first communication device sends a DNS response (the response includes the IP address of a server deployed under the second operator or the FQDN of the server) to the first communication device through signaling: Neasdf_DNSContext_Notify Request from EASDF. At this time, the third information obtained by the first communication device is: the IP address of the server or the FQDN of the server. At this time, after receiving the third information, the first communication device does not know the target DNAI corresponding to the server IP address or FQDN. Therefore, the first communication device needs to find the server IP address through the first request. Or the DNAI corresponding to the FQDN.

Optionally, the second information is provided based on a PLMN identifier (for example, the PLMN identifier of the second operator). That is to say, each set of second information is associated with the PLMN ID. When the first communication device After using the third information to compare with the second information and finding that the third information matches or is the same as at least one second information, it can be determined that the second DNAI corresponding to the third information belongs to the second information associated with it. The PLMN ID, the second information, may include at least one of the following:

1) Fully Qualified Domain Name (FQDN) or the range of FQDN that is related to or provided by the second operator, for example, the FQDN is an edge in the second operator FQDN of the application server.

2) IP address or IP address range (IP address or IP address range), the IP address or IP address range is related to or provided by the second operator, for example, the IP address is in the second operator The IP address of the edge application server.

3) Instruction information, the instruction information is used to instruct the operation behavior of the first communication device after determining the second DNAI. This operation behavior, for example, triggers the second communication device in the second operator to select a user plane according to the second DNAI, configure routing rules, etc. The indication information may also indicate that any parameter indicated in the second information, such as an IP address or address segment, can be reached through the N9 tunnel. After obtaining the instruction information, the first communication device will trigger a second request: Nsmf_PDUSession_Create Request to the second communication device, instead of executing the user plane selection within the first operator. That is to say, after the first communication device obtains the indication information, it will perform an N9 tunnel establishment process to the second operator or a cross-operator PDU session establishment process. if not, The first communication device will use the default routing method, for example, forward the data packet accessing the IP address of the server under the second operator directly to the default DNN (for example, the first DNN), and then route it through the Internet . The N9 tunnel information is a type of core network tunnel information (Core Network tunnel information, CN tunnel info).

4) Index information of the second communication device, which belongs to the second operator. The index information of the second communication device may be used by the first communication device to trigger the second communication device to select a user plane based on the second DNAI. The action is that after the first communication device obtains the second DNAI corresponding to the third information based on the first information, it can directly know from the first information that the second DNAI can be used by the second communication device to perform user interface processing. choose. Therefore, the first communication device no longer needs to perform the search process of the second communication device.

5) The second data network name (Data Network Name, DNN), the second DNN belongs to the second operator.

6) Second Single Network Slice Selection Assistance Information (S-NSSAI), the second S-NSSAI belongs to the second operator.

7) Mapping relationship between the second DNN and the first DNN, the second DNN belongs to the second operator, and the first DNN belongs to the first operator. When the first communication device receives the third information (for example, the first communication device receives the Nsmf_PDUSession_CreateSMContext Request sent by the AMF, the request includes the first DNN), at this time, the first communication device can, based on the first information, The first DNN is mapped to a second DNN that can be used in the second operator. Or based on the first DNN, it is mapped to an equivalent second DNN used by the second operator.

8) Mapping relationship between the second S-NSSAI and the first S-NSSAI, the second S-NSSAI belongs to the second operator, and the first S-NSSAI belongs to the first operator. When the first communication device receives the third information (for example, the first communication device receives the Nsmf_PDUSession_CreateSMContext Request sent by the AMF, and the request includes the first S-NSSAI), then the first communication device can , mapping the first S-NSSAI to the second S-NSSAI that can be used in the second operator. Or based on the first S-NSSAI, it is mapped to an equivalent second S-NSSAI used by the second operator.

9) The first DNAI belongs to the first operator. When the first communication device receives the third information, and the third information includes the first DNAI, it can obtain and determine the second DNAI equivalent to the third information based on the first information.

10) A second DNAI associated with or provided by the second operator. When the first communication device receives the third information, and the third information is any one of the above second information, it can obtain and determine the second DNAI equivalent to the third information based on the first information.

Based on the above embodiments, the method further includes: the first communication device receives the third information, the third information is included in the second information, and the third information may be sent by a terminal in the first operator; the first communication device determines based on the first information and the third information the second DNAI corresponding to the third information; the first communication device determines a second communication device based on the second DNAI, and the second communication device is used to select a user plane based on the second DNAI , supporting access to the edge application server indicated in the third information through the user plane, and the second communication device belongs to the second operator; the first communication device sends the following to the second communication device At least one of: the second DNAI, core network tunnel information (CN Tunnel Info) under the first operator. The tunnel information includes a tunnel identifier and or an IP address used by the user plane function on the N3/N9 tunnel for the PDU session.

This embodiment is conducive to enabling the terminal to access the edge application server of the second operator across operators, thereby improving the communication performance of the terminal.

In parallel with the above embodiment, the method further includes: the first communication device receives third information, the third information is included in the second information, the third information may be sent by a terminal in the first operator, and may It is received from other fifth generation mobile communication technology (5th Generation Mobile Communication Technology, 5G) core network network elements; the first communication device determines the first DNAI based on the third information, and the first DNAI belongs to the The first operator; or, the first communication device determines a second DNAI based on the third information and the first information, and the second DNAI belongs to the second operator; the first communication device According to the first information and the third information, determine the second DNAI corresponding to the third information, or determine the second communication device corresponding to the third information, and the second communication device belongs to the second operator ; The first communication device sends a third request to the second communication device.

Optionally, the third request may be the following signaling: Nsmf_PDUSession_Create Request. The signaling carries: first DNAI, second DNAI, and third information.

In this embodiment, the third request includes at least one of the following:

1) The second DNAI, wherein the first communication device is configured to determine the second DNAI corresponding to the first DNAI based on the first information. That is to say, the first communication device determines the second DNAI based on the first information and then sends it to the second communication device.

2) The first DNAI, wherein the second communication device is configured to determine the second DNAI based on the first DNAI. That is to say, the first communication device directly sends the first DNAI to the second communication device, and the second communication device can determine the second DNAI based on the first information.

3) The third information, the third information is used by the second communication device to determine the second DNAI, the second DNAI belongs to the second operator, the third information includes at least one of the following Items: FQDN, server IP address. That is to say, the first communication device sends the third information to the second communication device, and the second communication device can determine the second DNAI corresponding to or equivalent to the third information based on the first information.

4) Core network tunnel information (CN Tunnel Info) under the first operator. The core network tunnel information includes a tunnel identifier and or an IP address used by the user plane function on the N3/N9 tunnel for the PDU session.

The above multiple embodiments introduce the technical solution for the terminal to access the edge application server of the second operator across operators. The following will introduce the establishment process of the cross-operator Protocol Data Unit (Protocol Data Unit, PDU) session based on several embodiments. .

Optionally, based on the embodiment shown in Figure 3, the method further includes: the first communication device establishing a PDU session for the terminal according to the first information, and the PDU session is operated by the first operator. The PDU session is jointly carried by the operator and the second operator, or in other words, the PDU session spans the first operator and the second operator, and the terminal belongs to the first operator.

In this embodiment, the first communication device establishing a PDU session for the terminal includes: the first communication device sends a second request to a second communication device, the second communication device belongs to the second operator, and the The second request carries fourth information, and the second request is used to instruct the second communication device to establish the PDU session according to the fourth information or to establish Quality of Service (QoS) in the PDU session. flow; the first communication device receives a second response from the second communication device, the second response is used to indicate that the PDU session or QoS flow is successfully established, or the second operator is establishing a PDU During the session or QoS flow, at least one piece of the fourth information cannot be guaranteed by the second operator.

For example, the first communication device sends Nsmf_PDUSession_Create Request to the second communication device to establish a PDU session. The signaling includes fourth information. The fourth information is used by the second communication device (ie, the SMF in the second operator) to configure various indicators and parameters of the QoS of the PDU session under the second operator.

The fourth information includes at least one of the following: 1) QoS rules; 2) QoS parameters; 3) QoS configuration; 4) core network tunnel information; the core network tunnel information is the tunnel information on the first operator side , the core network tunnel information includes a tunnel identifier and or an IP address used for the PDU session by the user plane function on the N3/N9 tunnel.

For example, the fourth information includes at least one of the following (QoS indicators of the cross-operator PDU session): 5QI (5G QoS Identifier), allocation and retention priority (Allocation and Retention Priority, ARP), (uplink and downlink ) Guaranteed Flow Bit Rate (Guaranteed Flow Bit Rate, GFBR,), (upstream and downstream) Maximum Flow Bit Rate (MFBR,), (upstream and downstream) Maximum Packet Loss Rate (Maximum Packet Loss Rate), (upstream and downstream) Line) session aggregate stream bit rate (Session-AMBR), (uplink and downlink) terminal aggregate stream bit rate (UE-AMBR), terminal maximum bit rate per slice (UE per Slice-Maximum Bit Rate, UE-Slice-MBR) ,Clothes Qos Flow Identity (QFI).

Optionally, before the first communication device establishes a PDU session for the terminal, the method further includes: the first communication device receiving a fourth request from the terminal, the fourth request being used to request the establishment of a PDU session; wherein , the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to the first operator.

The fourth request may be: PDU session establishment request, PDU session modification request, Nsmf_PDUSession_CreateSMContext Request.

Optionally, the fourth request includes at least one of the following information:

1) The second DNN and/or the second S-NSSAI, the second DNN and the second S-NSSAI belong to the second operator. For example, the terminal requests to establish a PDU session to the second operator. Therefore, the fourth request carries the second operator's DNN and the second operator's S-NSSAI.

2) The first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, the first S-NSSAI and the second S-NSSAI have a mapping relationship, wherein the first The DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.

Optionally, the method further includes at least one of the following: 1) the first communication device determines the second DNAI according to the first information and the second DNN and/or the second S-NSSAI; 2) the The first communication device determines the second DNN and/or the second S-NSSAI according to the first information and the first DNN and/or the first S-NSSAI. According to the first information and the second DNN and/or a second S-NSSAI, determine the second DNAI.

In this embodiment, after the first communication device determines the second DNAI, it can further trigger the second communication device in the second operator to establish the above-mentioned PDU session based on the second DNAI, or configure routing rules for the above-mentioned PDU session, etc., to facilitate The terminal communicates across operators through cross-operator PDU sessions to improve the communication performance of the terminal.

The information acquisition method according to the embodiment of the present application is described in detail above with reference to FIG. 3 . A server access method according to another embodiment of the present application will be described in detail below with reference to FIG. 4 . It can be understood that the interaction between the second communication device and the first communication device described from the second communication device is the same as or corresponding to the description on the first communication device side in the method shown in Figure 3. To avoid duplication, it is appropriately omitted. Related description.

Figure 4 is a schematic flowchart of the implementation of the server access method according to the embodiment of the present application, which can be applied to the second communication device. As shown in Figure 4, the method 400 includes the following steps.

S402: The second communication device receives the third request from the first communication device.

S404: The second communication device selects a user plane based on the third request; wherein the user plane supports access to the edge application server of the second operator, and the first communication device belongs to the first operator, The second communication device belongs to the second operator.

Alternatively, the second communication device may be a second SMF in a second operator, and the first communication device may be a first SMF in the first operator.

The second request was mentioned in the previous embodiments. In some examples, the second request and the third request may be the same request; in other examples, the second request and the third request may be two different requests.

In the server access method provided by the embodiment of the present application, the second communication device receives a third request from the first communication device; the second communication device selects a user plane based on the third request; wherein, through the user The surface supports access to the edge application server of the second operator, the first communication device belongs to the first operator, and the second communication device belongs to the second operator. The embodiments of this application are conducive to enabling terminals to access edge application servers across operators and improving the communication performance of terminals.

Optionally, as an embodiment, the third request includes a second DNAI; or the third request includes a first DNAI, and the first DNAI belongs to the first operator; wherein the method further The method includes: the second communication device determines a second DNAI based on the first DNAI, and the second DNAI belongs to the second operator; or the third request includes third information, and the third information is Determine a second DNAI on the second communication device, the second DNAI belongs to the second operator, and the third information includes at least one of the following: FQDN, server IP address; or the third request includes, Core network tunnel information under the first operator, the core network tunnel information includes a tunnel identifier and or an IP address used for the PDU session by the user plane function on the N3/N9 tunnel.

Optionally, as an embodiment, the method further includes: the second communication device receiving a second request from the first communication device, the second request carrying fourth information, and the second request using In order to instruct the second communication device to establish the PDU session or establish a QoS flow in the PDU session according to the fourth information; the second communication device sends a second response to the first communication device, and the second communication device The response is used to indicate that the PDU session or QoS flow is successfully established, or that at least one of the fourth information cannot be guaranteed by the second operator during the process of establishing the PDU session or QoS flow.

Optionally, as an embodiment, the fourth information includes at least one of the following: 1) QoS rules; 2) QoS parameters; 3) QoS configuration; 4) tunnel information; the tunnel information is the first operation Core network tunnel information on the business side. The core network tunnel information includes the tunnel identifier and or the IP address used for the PDU session by the user plane function on the N3/N9 tunnel.

For example, the fourth information includes at least one of the following (QoS indicators of the cross-operator PDU session): 5QI (5G QoS Identifier), allocation and retention priority (Allocation and Retention Priority, ARP), (uplink and downlink ) Guaranteed Flow Bit Rate (Guaranteed Flow Bit Rate, GFBR,), (upstream and downstream) Maximum Flow Bit Rate (MFBR,), (upstream and downstream) Maximum Packet Loss Rate (Maximum Packet Loss Rate), (upstream and downstream) Line) session aggregate stream bit rate (Session-AMBR), (uplink and downlink) terminal aggregate stream bit rate (UE-AMBR), terminal Maximum bit rate of each slice at the end (UE per Slice-Maximum Bit Rate, UE-Slice-MBR,), Quality of Service Flow Identity (Qos Flow Identity, QFI).

Figure 5 is a schematic flowchart of the information sending method according to the embodiment of the present application, which can be applied to a third communication device. As shown in Figure 5, the method 500 includes the following steps.

S502: The third communication device sends first information; wherein the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; the second information The mapping relationship with the index information of the second communication device; the second DNAI; the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the Second DNAI, related to or provided by the second operator.

In this embodiment, the third communication device may be AF or NEF in the first operator, and the receiving end of the first information may be the fourth communication device UDR. For example, the AF sends the first information to the fourth communication device UDR through NEF. .

For example, the third communication device AF sends the first information to another third communication device NEF through Nnef_EASDeployment_Create/Update/Delete, and then the third communication device NEF saves the first information in the fourth communication device through Nudr_DM_Create/Update/Delete. In the communication equipment UDR.

In the information sending method provided by the embodiment of the present application, the third communication device sends the first information associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship of the index information of the second communication device; the second DNAI, wherein the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the The second DNAI is related to or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information, the second DNAI, the second communication device and other information in the second operator, so that the equipment in the first operator, such as the first communication device, can understand this information and then Implementing communication with the second operator is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

Optionally, the second information is provided based on the PLMN identifier, including at least one of the following:

1)FQDN or range of FQDN.

2) IP address or IP address segment.

3) Instruction information, the instruction information is used to instruct the operation behavior of the first communication device after determining the second DNAI.

4) Index information of the second communication device, which belongs to the second operator.

5) Second DNN.

6) Second S-NSSAI.

7) The mapping relationship between the second DNN and the first DNN.

8) Mapping relationship between the second S-NSSAI and the first S-NSSAI.

9) The first DNAI belongs to the first operator.

10) Second DNAI.

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.

Figure 6 is a schematic flowchart of the information sending method according to the embodiment of the present application, which can be applied to the fourth communication device. As shown in Figure 6, the method 600 includes the following steps.

S602: The fourth communication device receives the first request, where the first request is used to request to obtain the first information.

S604: The fourth communication device sends the first information; wherein the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI ; The mapping relationship between the second information and the index information of the second communication device; the second DNAI.

The fourth communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. supply.

In this embodiment, the fourth communication device may be a UDR in the first operator, and the first request may be from the first communication device.

For example, the fourth communication device receives the first information from the third communication device NEF, or AF, through Nudr_DM_Create/Update/Delete.

In the information sending method provided by the embodiment of the present application, the fourth communication device sends the first information associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship of the index information of the second communication device; the second DNAI, wherein the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the The second DNAI is related to or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information, the second DNAI, the second communication device and other information in the second operator, so that the equipment in the first operator, such as the first communication device, can understand this information and then Implementing communication with the second operator is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

1)FQDN or range of FQDN.

2) IP address or IP address segment.

5) Second DNN.

6) Second S-NSSAI.

7) The mapping relationship between the second DNN and the first DNN.

8) Mapping relationship between the second S-NSSAI and the first S-NSSAI.

9) The first DNAI belongs to the first operator.

10) Second DNAI.

Figure 7 is a schematic flow chart of the session establishment method according to the embodiment of the present application, which can be applied to terminals. As shown in Figure 7, the method 700 includes the following steps.

S702: The terminal performs a first operation, which includes at least one of the following: triggering a fourth request based on terminal routing policy (UE Route Selection Policy, URSP) rules; determining a PDU session matching application traffic based on URSP rules; A fourth request is sent, the fourth request being used to establish a PDU session.

Wherein, the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator.

In the session establishment method provided by the embodiment of the present application, the terminal performs a first operation, and the first operation includes at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session that matches application traffic based on URSP rules; sending a fourth request. request, the fourth request is used to establish a PDU session, wherein the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator. The embodiments of the present application are conducive to the terminal communicating across operators through cross-operator PDU sessions, thereby improving the communication performance of the terminal.

Optionally, as an embodiment, when the terminal triggers the fourth request or sends the fourth request based on URSP rules, the fourth request includes at least one of the following information: 1) second DNN and/or or the second S-NSSAI; 2) the first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, and the first S-NSSAI and the second S-NSSAI have a mapping relationship ; Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.

The fourth request may be: PDU session establishment request, or PDU session modification request.

Optionally, the URSP rule that triggers the fourth request may include the second DNN and/or the second S-NSSAI; the first DNN and/or the first S-NSSAI.

Optionally, as an embodiment, the URSP rule includes at least one of the following: a second DNN and a second S-NSSAI; wherein the second DNN and the second S-NSSAI belong to the second operation provider, and/or, the PDU session parameters of the PDU session include at least one of the following: a second DNN, a second S-NSSAI, the second DNN and the second S-NSSAI belong to the second operator .

Optionally, as an embodiment, the URSP rules include location information, and the location information The information is used to indicate where the URSP rule takes effect.

For example, the URSP rules are only available for terminals in specific locations. At this time, the terminal can use the second DNN and the second S-NSSAI in the URSP rules to trigger the establishment of a PDU session to the second operator; or, use the first DNN and the first S-NSSAI to trigger the establishment of a PDU session to the second operator. A PDU session to the second operator, but the first communication device SMF within the first operator can, based on the first information, convert the first DNN, the first S-NSSAI, into the second DNN, the second S- NSSAI.

In order to describe in detail the information acquisition and sending methods, server access and session establishment methods provided by the embodiments of the present application, several specific embodiments will be described below.

Embodiment 1

This embodiment mainly introduces the AF providing the first information. Whether the AF is trusted or not, it needs to provide the first information to the UDR through the NEF. As shown in Figure 8, this embodiment includes the following steps.

Step 1: AF provides the first information of other operators (such as the second operator) to NEF.

The purpose of the first information is that when the first communication device receives the third information, the first communication device compares the first information with the third information based on the FQDN, IP address or address segment, UE location, etc. Afterwards, the second DNAI to which the third information is mapped can be determined, and then the second DNAI in the second operator can be determined.

This example has two operators:

The home operator, that is, the operator where the terminal is located, is the first operator or operator B;

The destination operator, also called the roaming location, refers to the operator that provides edge computing services and serves the second DNAI, that is, the second operator or operator A. PDU sessions or IP flows need to be established to the edge application server in the second operator.

The content of the first information can be found in the following table:

Step 2: NEF processes the first message.

Step 3: NEF writes the first information into the UDR. The following signaling can be used: Data Management Create or Update Request (Nudr_DM_Create/Update request).

The first information will be written to the following data set or data subset: the data set (Data set) is application data (Application data); the data subset (Data subset) is application function traffic impact request information (AF traffic influence request) information), or service specific information (Service specific information), or edge application server deployment information (EAS Deployment Information).

Then, the data key used is the Subscription Permanent Identifier (SUPI), or the data key used is the first DNN and/or the first S-NSSAI; the first DNN and/or the first S-NSSAI. An S-NSSAI is used by the home operator, that is, the first operator. make The data key used may also be an internal group ID (internal group ID), that is, the first information provided to a group of terminals.

Step 4: UDR sends a response message to NEF, such as data management create or update response (Nudr_DM_Create/Update response).

Step 5: NEF sends a response message to AF.

Embodiment 2

This embodiment mainly introduces the first SMF to obtain or recover the first information. The first SMF can obtain the above-mentioned first information from the UDR. The specific process is shown in Figure 9, including the following steps:

Step 1: The first SMF receives the third information. The third information includes FQDN, IP address, etc., but cannot determine which DNAI the FQDN, IP address, etc. belong to.

Step 2: The first SMF sends a first information subscription request to the NEF.

Step 3: NEF sends the first information subscription response to SMF.

Step 4: NEF interacts with UDR to obtain the first information. Specifically, for example, data management query or subscription (Nudr_DM_Query/Subscribe) request; UDR sends data management query or subscription response (Nudr_DM_Query Response) message to NEF; UDR sends data management notification (Nudr_DM_Notify) to NEF, which contains the first information.

Step 5: NEF sends the first information to the first SMF.

Embodiment 3

This embodiment mainly introduces the mapping relationship between DNN and S-NSSAI.

In this embodiment, destination operator A can provide DNN+S-NSSAI to home operator B. The purpose of these two parameters is mainly to enable the network to ensure that the terminal establishes a cross-operator PDU session, for example, UE The DNN+S-NSSAI of the destination operator can be carried to trigger the establishment of a PDU session.

However, in order to facilitate maintenance, when the destination operator provides DNN+S-NSSAI, the home operator may perform a conversion into information that the terminal can understand, or in other words, a DNN maintained by the home operator. +S-NSSAI alternatives, as shown in the table below.

Among them, the DNN and/or S-NSSAI after the home operator B completes the mapping can be sent to Terminal.

The mapping relationships in the above table can be saved in UDR. The AF first provides the DNN or S-NSSAI of operator A, which is then converted by the first SMF.

Embodiment 4

This embodiment mainly introduces the DNS process, as shown in Figure 10. This embodiment includes the following steps:

Step 1: The terminal performs a PDU session establishment process with the first SMF.

Step 2: The first SMF selects the Edge Application Server Discovery Function (EASDF).

Step 3: The first SMF sends a domain name resolution system context establishment request (Neasdf_DNSContext_Create Request) to EASDF.

Step 4: EASDF sends the domain name resolution system context establishment response (easdf_DNSContext_Create Response) to the first SMF

Step 5: The first SMF sends the domain name resolution system context update request Neasdf_DNSContext_Update Request to EASDF

Step 6: EASDF sends the domain name resolution system context update response (Neasdf_DNSContext_Update Response) to the first SMF

Step 7: The terminal sends a domain name resolution system query, namely DNS Query, to EASDF.

Step 8: EASDF sends a domain name resolution system context notification request (Neasdf_DNSContext_Notify Request) to the first SMF.

Step 9: The first SMF sends the domain name resolution system context notification response (Neasdf_DNSContext_Notify Response) to EASDF.

Step 10: The first SMF sends a domain name resolution system context update request (Neasdf_DNSContext_Update Request) to EASDF.

Step 11: EASDF sends the domain name resolution system context update response (Neasdf_DNSContext_Update Response) to the first SMF.

Step 12: EASDF sends a DNS query (DNS Query) to the DNS server.

Step 13: The DNS server sends a DNS response (DNS Response) to EASDF.

Step 14: EASDF sends a domain name resolution system context notification request (Neasdf_DNSContext_Notify Request) to the first SMF. The notification request notifies the first SMF of the received third information. The third information, here, may be a DNS response. The DNS response includes: server IP address, server FQDN, and the server is in the second operator.

EASDF sends the DNS request to the first SMF. The DNS request includes FQDN, EAS IP address, etc.

Step 15: The first SMF sends a domain name resolution system context notification response (Neasdf_DNSContext_Notify Response) to EASDF.

Step 16: The first SMF obtains the first information from the UDR. The first communication device needs to determine the second DNAI based on the third information. At this time, the first SMF needs to recover the first information from the UDR to assist in the generation of the second DNAI.

The first SMF found that based on this EAS IP address, either the DNAI of the peer operator could be determined, or the DNAI could not be determined. In other words, the first SMF cannot determine which operator it is based on this EAS IP address, or which operator's DNAI it is.

At this time, the first SMF needs to obtain the first information from the UDR and determine the second DNAI based on the terminal location, FQDN, and EAS IP address.

In addition, the first SMF can also determine, based on the first information, the second communication device (second SMF) to be interacted with in step 18; the first SMF can also determine, based on the first information, the one that needs to be selected to access the second SMF in step 17. On the user plane of the second operator's network, this is based on the indication information in the first information. In this way, the first communication device will no longer perform the default routing method, that is, send the data packet whose DNAI cannot be determined through the default DN. (For example, the first DNN, or the Internet (Internet) network), routed to EAS through the Internet.

Step 17: The first SMF performs PDU Session Anchor (PSA) selection and ULCL selection on the home side.

After the first SMF is determined to be the DNAI of the opposite operator, you can first select the home UL CL or PSA. This PSA is for N9 interoperability with operator A's PSA.

The user plane selected within the scope of the first operator may be based on the first DNAI, and the selected user plane is also a user plane capable of N9 tunnel interworking with the PSA of the second operator.

Step 18: The first SMF selects the second SMF of PLMN B, and then the second SMF selects the PSA based on the second DNAI.

At the specific address, the first SMF can send a PDU session establishment or update request (Nsmf_PDUSession_Create/Update Request) to the second SMF, which carries the second DNAI. Or it carries the first DNAI, or the third information, and is then mapped into the second DNAI by the second SMF based on the first information. It also carries the N9 tunnel information (N9tunnel info) of the user plane under the first operator. Or carry the core network tunnel information (CN Tunnel Info) under the first operator. The tunnel information includes a tunnel identifier and or an IP address used by the user plane function on the N3/N9 tunnel for the PDU session.

Step 19: The second SMF performs UPF selection based on the second DNAI.

Step 20: The second SMF and the second UPF execute the N4 procedure or N4 procedure. In this N4 process, N9 tunnel information needs to be configured (for example, the user plane of the first operator provides tunnel information).

Step 21: The second SMF may send a PDU session establishment or update response (Nsmf_PDUSession_Create/Update Response) to the first SMF. The update response carries N9 tunnel information (N9tunnel info) of the user plane within the second operator.

Step 22: Update UPF, for example, update N9 tunnel information. After this update, the N9 tunnels between the user plane in the first operator and the user plane in the second operator are interoperable (that is, the user plane in the first operator knows the N9 tunnel of the user plane in the second operator). Information, the user plane in the second operator also knows the N9 tunnel information of the user plane in the first operator).

Step 23: The first SMF sends a domain name resolution system context update request (Neasdf_DNSContext_Update Request) to EASDF.

Step 24: EASDF sends the domain name resolution system context update response (Neasdf_DNSContext_Update Response) to the first SMF.

Step 25: EASDF sends a DNS response to the terminal.

There is another design method. The first SMF queries the UDR based on the IP address and finds a first DNAI that can be recognized by its own operator. However, this still requires operator B to select UPF.

Therefore, the first SMF first selects UPF based on the first DNAI; then, the first SMF triggers step 18 to the second SMF: it can carry the converted first DNAI applied to operator B, or it can be sent to operator A for use. The second DNAI.

Embodiment 5

This embodiment mainly introduces the cross-operator PDU session establishment process, that is, how to establish a cross-operator PDU session to access the servers of other operators, as shown in Figure 11, including the following steps:

Step 1: The terminal triggers a PDU session establishment request, which carries a second DNN and/or a second S-NSSAI of the second operator; or, carries a first DNN and/or a first S-NSSAI, but this first DNN and the first S-NSSAI correspond to operator A.

Step 2: AMF performs SMF selection.

Step 3: AMF sends a PDU session establishment session management context request (Nsmf_PDUSession_CreateSMContext Request) to the first SMF.

Step 4: The first SMF and UDM perform the subscription retrieval or update process (Subscription retrieval or for update).

Step 5: The first SMF sends the PDU session establishment session management context response (Nsmf_PDUSession_CreateSMContext Response) to the AMF.

Step 6: PDU session authentication or authorization process (PDU session authentication/authorization).

Step 7: The first SMF performs PCF selection.

Step 8: The first SMF and the first PCF execute the session management policy association establishment process (SM policy association establishment).

This process also includes the session policy in operator B, or carries the fourth information, Also included are policies for sessions in operator A. The session policy includes many contents, such as the 5QI (5G qos ID) of the PDU session, ARP priority, etc.

Operator B needs to determine the policies of this cross-operator PDU session in operator B and operator A at the same time. This is caused by the terminal requesting the DNN and S-NSSAI of other operators.

Step 9: First SMF performs UPF selection.

Step 10: The first SMF and the first UPF perform the N4 procedure establishment or response process (N4 procedure establishment/response)

Step 11: Since the terminal requests the DNN and S-NSSAI of other operators, the establishment process is triggered to operator A.

This signaling includes the SM policy for this PDU session to operator A, such as 5G QoS related parameters, and the N9 tunnel information of the selected user plane in operator A, the second DNAI. Or carry the core network tunnel information (CN Tunnel Info) under the first operator. The tunnel information includes a tunnel identifier and or an IP address used by the user plane function on the N3/N9 tunnel for the PDU session.

The first SMF may send a PDU session establishment request (Nsmf_PDUSession_Create Request) to the second SMF.

Step 12: Second SMF performs UPF selection. The user plane selection is also based on the second DNAI.

Step 13: The second SMF and the second UPF execute the N4 procedure (N4 procedure establishment/response). In the N4 process, the user plane needs to be configured with the N9 tunnel information of the user plane selected in the first operator.

Step 14: The second SMF can send a PDU session establishment response (Nsmf_PDUSession_Create Response) to the first SMF. The PDU session establishment includes N9 tunnel information of the user plane selected in the second operator.

Step 15a: The first SMF may send a PDU session update request (Nsmf_PDUSession_Update Request) to the second SMF.

Step 15b: The second SMF may send a PDU session update response (Nsmf_PDUSession_Update Response) to the first SMF.

If in step 14, operator A does not support certain SM policies, for example, ARP for this session is not supported, or 5QI is not supported, then the purpose of steps 15a and 15b is to allow operator A and operator B to Conversational strategies are negotiated and re-communicated and generated.

For example, after receiving step 14, there may be an SM policy association modification that is used to modify the policy in operator A, and then step 15 is updated to operator A.

This embodiment provides that the QoS of the second SMF of operator A may include the following content: the QoS in the VPLMN includes 5QI and the corresponding ARP value, so that the visited PLMN (Visited PLMN, The QoS in the VPLMN contains a 5QI and corresponding ARP value that the VPLMN can accept for the QoS Flow associated).

Step 16: The first SMF and the first UPF execute the N4 procedure (N4 procedure).

Step 17: The first SMF and AMF perform N1N2 message transfer (Namf_Communication_N1N2MessageTransfer).

Step 18: AMF sends N2 PDU Session Request (N2 PDU Session Request) to RAN.

Step 19: RAN and UE perform RRC reconfiguration process (RRC reconfiguration).

Step 20: RAN sends N2 PDU Session Request Ack to AMF.

Step 21: AMF sends a PDU session update session management context request (Nsmf_PDUSession_UpdateSMContext Request) to the first SMF.

Step 22: The first SMF and the first UPF execute the N4 procedure modification process (N4 procedure modification).

Step 23: The first SMF sends a PDU session update session management context response (Nsmf_PDUSession_UpdateSMContext Response) to the AMF.

This embodiment finally establishes a cross-operator PDU session from operator B to operator A.

Embodiment 6

This embodiment mainly introduces the design of URSP rules. The terminal can establish a cross-operator PDU session based on URSP rules; or match traffic to a cross-operator PDU session.

For example, for a certain IP address, FQDN (corresponding to the IP descriptor, or domain descriptor), or the traffic of the application descriptor (APP descriptor), you can match or create a cross-operator PDU. session.

URSP rules mainly include traffic descriptors and route selection components (Route Selection Components, RSC), etc. See the following table for details.

The DNN in the following table is a DNN accessing operator A.

In the Route Selection Components (RSC) of the Route Selection Descriptor (RSD), as shown in the following table, S-NSSAI and DNN are both to the opposite operator, or through PCF For conversion, the S-NSSAI and DNN of the opposite end operator are converted into the DNN and S-NSSAI used by the own operator. This conversion can be realized by PCF.

The PCF may also be the first communication device. Then, the PCF recovers the first information from the fourth communication device UDR, and then when the first communication device receives the third information, in this way, the third information can be Three pieces of information (for example, the first DNN, the first S-NSSAI) are converted into the second DNN, the second S-NSSAI.

In addition, RSC also includes location criteria (Location Criteria), that is to say, this RSD and RSC are only available in a specific location, such as the current location, accessible or accessible.

Figure 12 is a schematic structural diagram of an information acquisition device according to an embodiment of the present application. The device can be applied to a first communication device. As shown in Figure 12, the device 1200 includes the following modules.

Sending module 1202, configured to send a first request, where the first request is used to request acquisition of first information.

The receiving module 1204 is configured to receive the first information, the first information is associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; the second information The mapping relationship with the index information of the second communication device; the second DNAI; wherein the first communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or The second DNAI is related to or provided by the second operator.

In the information acquisition apparatus provided by the embodiment of the present application, the first communication device receives information related to the PLMN identifier. The first information associated with the first information is used to provide at least one of the following: the mapping relationship between the second information and the second DNAI; the mapping relationship between the second information and the index information of the second communication device; the second DNAI, where the The first communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. . The embodiment of the present application uses the first information to indicate the second information in the second operator, the second DNAI, the second communication device and other information to the first communication device in the first operator, so as to facilitate the first communication device to understand the information. Then, communication with the second operator can be realized, which is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

Optionally, as an embodiment, the receiving module 1204 is further configured to: map the received third information to the second DNAI corresponding to the third information according to the first information, or, according to The received third information determines the index information of the second communication device corresponding to the third information; wherein the third information is included in the second information.

Optionally, as an embodiment, the device further includes a processing module configured to establish a PDU session for the terminal according to the first information, and the PDU session is used by the first operator and the second operator. Jointly carried, the terminal belongs to the first operator.

The device 1200 according to the embodiment of the present application can refer to the process corresponding to the method 300 of the embodiment of the present application, and each unit/module in the device 1200 and the above-mentioned other operations and/or functions are respectively to implement the corresponding process in the method 300, And can achieve the same or equivalent technical effects. For the sake of simplicity, they will not be described again here.

Figure 13 is a schematic structural diagram of a server access device according to an embodiment of the present application, applied to a second communication device. As shown in Figure 13, the device 1300 includes the following modules.

The receiving module 1302 is used to receive the third request from the first communication device.

The processing module 1304 is configured to select a user plane based on the third request; wherein the user plane supports access to the edge application server of the second operator, the first communication device belongs to the first operator, and the The second communication device belongs to the second operator.

In the server access apparatus provided by the embodiment of the present application, the second communication device receives a third request from the first communication device; the second communication device selects a user plane based on the third request; wherein, through the user The surface supports access to the edge application server of the second operator, the first communication device belongs to the first operator, and the second communication device belongs to the second operator. The embodiments of this application are conducive to enabling terminals to access edge application servers across operators and improving the communication performance of terminals.

Optionally, as an embodiment, the third request includes a second DNAI; or the third request includes a first DNAI, and the first DNAI belongs to the first operator; wherein the method further The method includes: the second communication device determines a second DNAI based on the first DNAI, and the second DNAI belongs to the second operator; or the third request includes third information, and the third information is Determine a second DNAI on the second communication device, and the second DNAI belongs to the first Second operator, the third information includes at least one of the following: FQDN, server IP address.

Optionally, as an embodiment, the third request further includes core network tunnel information under the first operator. The core network tunnel information includes a tunnel identifier and or an IP address used by the user plane function on the N3/N9 tunnel for the PDU session.

Optionally, as an embodiment, the receiving module 1302 is also configured to receive a second request from the first communication device, the second request carries fourth information, and the second request is used to indicate the The second communication device establishes the PDU session or establishes a QoS flow in the PDU session according to the fourth information; the device further includes a sending module for sending a second response to the first communication device, the third The second response is used to indicate that the PDU session or QoS flow is successfully established, or that at least one of the fourth information cannot be guaranteed by the second operator during the process of establishing the PDU session or QoS flow.

The device 1300 according to the embodiment of the present application can refer to the process corresponding to the method 400 of the embodiment of the present application, and each unit/module in the device 1300 and the above-mentioned other operations and/or functions are respectively to implement the corresponding process in the method 400, And can achieve the same or equivalent technical effects. For the sake of simplicity, they will not be described again here.

Figure 14 is a schematic structural diagram of an information sending device according to an embodiment of the present application, which is applied to a third communication device. As shown in Figure 14, the device 1400 includes the following modules.

Sending module 1402, configured to send first information; wherein the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; the second information The mapping relationship with the index information of the second communication device; the second DNAI; the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the Second DNAI, related to or provided by the second operator.

Optionally, the device 1400 further includes a processing module.

In the information sending device provided by the embodiment of the present application, the third communication device sends the first information associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship of the index information of the second communication device; the second DNAI, wherein the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the The second DNAI is related to or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information, the second DNAI, the second communication device and other information in the second operator, so that the equipment in the first operator, such as the first communication device, can understand this information and then Implementing communication with the second operator is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

The device 1400 according to the embodiment of the present application can refer to the process corresponding to the method 500 of the embodiment of the present application, and each unit/module in the device 1400 and the above-mentioned other operations and/or functions are respectively to implement the corresponding process in the method 500, and can achieve the same or equivalent technical effects, For the sake of brevity, no further details will be given here.

Figure 15 is a schematic structural diagram of an information sending device according to an embodiment of the present application, which is applied to a third communication device. As shown in Figure 15, the device 1500 includes the following modules.

The receiving module 1502 is configured to receive a first request, where the first request is used to request acquisition of first information.

Sending module 1504, configured to send the first information; wherein the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship between the second information and the index information of the second communication device; the second DNAI; the fourth communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or The second DNAI is related to or provided by the second operator.

In the information sending apparatus provided by the embodiment of the present application, the fourth communication device sends the first information associated with the PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship of the index information of the second communication device; the second DNAI, wherein the third communication device belongs to the first operator, the second communication device belongs to the second operator, the second information and/or the The second DNAI is related to or provided by the second operator. The embodiment of the present application uses the first information to indicate the second information, the second DNAI, the second communication device and other information in the second operator, so that the equipment in the first operator, such as the first communication device, can understand this information and then Implementing communication with the second operator is conducive to realizing cross-operator communication of the terminal and improving the communication performance of the terminal.

The device 1500 according to the embodiment of the present application can refer to the process corresponding to the method 600 of the embodiment of the present application, and each unit/module and the above-mentioned other operations and/or functions in the device 1500 are respectively intended to implement the corresponding process in the method 600. And can achieve the same or equivalent technical effects. For the sake of simplicity, they will not be described again here.

Figure 16 is a schematic structural diagram of a session establishment device according to an embodiment of the present application. The device can be applied to a terminal. As shown in Figure 16, the device 1600 includes the following modules.

The communication module 1602 is configured to perform a first operation, which includes at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session matching application traffic based on URSP rules; sending a fourth request, and the fourth request is Four requests are used to establish a PDU session; wherein the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator.

Optionally, the device 1600 further includes a processing module.

In the session establishment device provided by the embodiment of the present application, the terminal performs a first operation, and the first operation includes at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session that matches application traffic based on URSP rules; sending a fourth request. request, the fourth request is used to establish a PDU session, wherein the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator. The embodiment of this application is beneficial to terminals through cross-operator PDU sessions. Communicate across operators and improve the communication performance of terminals.

Optionally, as an embodiment, when the fourth request is triggered or the fourth request is sent based on the URSP rule, the fourth request includes at least one of the following information: 1) the second DNN and/or the second S-NSSAI; 2) the first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, and the first S-NSSAI and the second S-NSSAI have a mapping relationship; wherein, The first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.

Optionally, as an embodiment, the URSP rule includes location information, and the location information is used to indicate the location where the URSP rule takes effect.

The session establishment device 1600 according to the embodiment of the present application can refer to the process corresponding to the method 700 of the embodiment of the present application, and each unit/module in the device 1600 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding steps in the method 700. The process can achieve the same or equivalent technical effect. For the sake of simplicity, it will not be described again here.

The device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

Optionally, as shown in Figure 17, this embodiment of the present application also provides a communication device 1700, including a processor 1701 and a memory 1702. The memory 1702 stores programs or instructions that can be run on the processor 1701, for example. , when the communication device 1700 is a terminal, when the program or instruction is executed by the processor 1701, each step of the above session establishment method embodiment is implemented, and the same technical effect can be achieved. When the communication device 1700 is a network-side device, when the program or instruction is executed by the processor 1701, the steps of the above information acquisition and sending method and server access method embodiments are implemented, and the same technical effect can be achieved. To avoid duplication, here No longer.

Embodiments of the present application also provide a terminal, including a processor and a communication interface. The communication interface is used to perform a first operation. The first operation includes at least one of the following: triggering a fourth request based on the terminal routing policy URSP rule; The URSP rule determines the PDU session that matches the application traffic; sends a fourth request, the fourth request is used to establish the PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to to the first operator. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 18 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 1800 includes but is not limited to: radio frequency unit 1801, network module 1802, audio output unit 1803, input unit 1804, sensor 1805, display unit 1806, user input unit 1807, At least some components of the interface unit 1808, the memory 1809, the processor 1810, and the like.

Those skilled in the art can understand that the terminal 1800 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 1810 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in Figure 18 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 1804 may include a graphics processing unit (Graphics Processing Unit, GPU) 18041 and a microphone 18042. The GPU 18041 is used for recording data by an image capture device (such as a camera) in the video capture mode or the image capture mode. The image data obtained from still pictures or videos is processed. The display unit 1806 may include a display panel 18061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1807 includes at least one of a touch panel 18071 and other input devices 18072 . Touch panel 18071, also known as touch screen. The touch panel 18071 may include two parts: a touch detection device and a touch controller. Other input devices 18072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1801 can transmit it to the processor 1810 for processing; in addition, the radio frequency unit 1801 can send uplink data to the network side device. Generally, the radio frequency unit 1801 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 1809 may be used to store software programs or instructions as well as various data. The memory 1809 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 1809 may include volatile memory or nonvolatile memory, or memory 1809 may include both volatile and nonvolatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), 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, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1809 in the embodiment of the present application includes, but is not limited to, these and any other suitable suitable type of memory.

The processor 1810 may include one or more processing units; optionally, the processor 1810 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1810.

The radio frequency unit 1801 may be used to perform a first operation, which includes at least one of the following: triggering the fourth request based on the terminal routing policy URSP rule; determining a PDU session that matches the application traffic based on the URSP rule; sending The fourth request is used to establish a PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to the first operator.

The terminal provided by the embodiment of the present application performs a first operation, and the first operation includes at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session matching application traffic based on URSP rules; sending a fourth request, The fourth request is used to establish a PDU session, where the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator. The embodiments of the present application are conducive to the terminal communicating across operators through cross-operator PDU sessions, thereby improving the communication performance of the terminal.

The terminal 1800 provided by the embodiment of this application can also implement each process of the above session establishment method embodiment, and can achieve the same technical effect. To avoid duplication, the details will not be described here.

An embodiment of the present application also provides a network-side device, including a processor and a communication interface. The processor or the communication interface is used to execute each process of the above embodiments of the information acquisition and sending method and the server access method. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 19, the network side device 1900 includes: a processor 1901, a network interface 1902, and a memory 1903. Among them, the network interface 1902 is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1900 in this embodiment of the present invention also includes: instructions or programs stored in the memory 1903 and executable on the processor 1901. The processor 1901 calls the instructions or programs in the memory 1903 to execute Figures 12 to 15 The execution methods of each module are shown and achieve the same technical effect. To avoid repetition, they will not be described in detail here.

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, the above information acquisition and sending methods, server access and session establishment methods are implemented. Each process in the example can achieve the same technical effect. To avoid repetition, we will not repeat it here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above information acquisition and transmission method. Each process of the server access and session establishment method embodiments can achieve the same technical effect. To avoid duplication, they will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above information acquisition and sending method. , server access and session establishment method embodiments, and can achieve the same technical effect. To avoid duplication, they will not be described again here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A method of obtaining information, including:

The first communication device sends a first request, where the first request is used to request acquisition of first information;

The first communication device receives the first information, the first information is associated with a public land mobile network PLMN identifier, and the first information is used to provide at least one of the following: second information and second data network access The mapping relationship that identifies the DNAI; the mapping relationship between the second information and the index information of the second communication device; the second DNAI;

Wherein, the first communication device belongs to a first operator, the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to the second operator or is provided by the second operator. Provided by the operator.
The method of claim 1, further comprising:

The first communication device maps the received third information to the second DNAI corresponding to the third information based on the first information, or determines the corresponding third information based on the received third information. The index information of the second communication device;

Wherein, the third information is included in the second information.
The method according to claim 1 or 2, wherein the second information is provided based on a PLMN identifier and includes at least one of the following:

Fully qualified domain name FQDN or range of FQDN;

IP address or IP address range;

Instruction information, the instruction information is used to instruct the operation behavior of the first communication device after determining the second DNAI;

Index information of a second communication device, which belongs to the second operator;

Second data network name DNN;

The second single network slice selection auxiliary information S-NSSAI;

The mapping relationship between the second DNN and the first DNN;

The mapping relationship between the second S-NSSAI and the first S-NSSAI;

A first DNAI, the first DNAI belongs to the first operator;

Second DNAI;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
The method of claim 1, further comprising:

The first communication device receives third information, the third information being included in the second information;

The first communication device determines the second DNAI corresponding to the third information based on the first information and the third information;

The first communication device determines a second communication device based on the second DNAI, and the second communication device The communication device is configured to select a user plane based on the second DNAI, and support access to the edge application server indicated in the third information through the user plane, and the second communication device belongs to the second operator;

The first communication device sends at least one of the following to the second communication device: the second DNAI and core network tunnel information under the first operator.
The method of claim 1, further comprising:

The first communication device receives third information, the third information being included in the second information;

The first communication device determines a first DNAI based on the third information, and the first DNAI belongs to the first operator;

The first communication device determines the second communication device corresponding to the third information based on the first information and the third information, and the second communication device belongs to the second operator;

The first communication device sends a third request to the second communication device, where the third request includes at least one of the following:

The second DNAI, wherein the first communication device is configured to determine the second DNAI corresponding to the first DNAI based on the first information;

the first DNAI, wherein the second communication device is configured to determine the second DNAI based on the first DNAI;

The third information is used by the second communication device to determine the second DNAI. The second DNAI belongs to the second operator. The third information includes at least one of the following: FQDN, server IP address. ;

Core network tunnel information under the first operator.
The method of claim 1, further comprising:

The first communication device establishes a protocol data unit PDU session for the terminal according to the first information. The PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to the First operator.
The method according to claim 6, wherein the first communication device establishing a PDU session for the terminal includes:

The first communication device sends a second request to a second communication device, the second communication device belongs to the second operator, the second request carries fourth information, and the second request is used to indicate that the The second communication device establishes the PDU session or establishes a QoS flow in the PDU session according to the fourth information;

The first communication device receives a second response from the second communication device, the second response is used to indicate that the PDU session or QoS flow is successfully established, or the second operator establishes the PDU session or During the QoS flow process, at least one piece of the fourth information cannot be guaranteed by the second operator.
The method of claim 7, wherein the fourth information includes at least one of the following:

QoS rules;

QoS parameters;

QoS configuration;

Tunnel information; the tunnel information is tunnel information on the first operator side, and the tunnel information includes a tunnel identifier.
The method according to claim 6, wherein before the first communication device establishes a PDU session for the terminal, the method further includes:

The first communication device receives a fourth request from the terminal, the fourth request is used to establish a PDU session; wherein the PDU session is jointly carried by the first operator and the second operator, and the terminal belongs to the Describe the first operator.
The method according to claim 9, wherein the fourth request includes at least one of the following information:

Second DNN and/or second S-NSSAI;

The first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, and the first S-NSSAI and the second S-NSSAI have a mapping relationship;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
The method according to claim 10, wherein the method further includes at least one of the following:

The first communication device determines the second DNAI based on the first information and the second DNN and/or the second S-NSSAI;

The first communication device determines the second DNN and/or the second S-NSSAI according to the first information and the first DNN and/or the first S-NSSAI. Second DNN and/or second S-NSSAI, determine second DNAI.
A server access method including:

The second communication device receives the third request from the first communication device;

The second communication device selects a user plane based on the third request;

Wherein, accessing an edge application server of a second operator is supported through the user plane, the first communication device belongs to the first operator, and the second communication device belongs to the second operator.
The method of claim 12, wherein

The third request includes a second DNAI; or,

The third request includes a first DNAI, and the first DNAI belongs to the first operator; wherein the method further includes: the second communication device determines a second DNAI based on the first DNAI, the The second DNAI belongs to the second operator; or,

The third request includes third information, the third information is used by the second communication device to determine the second DNAI, the second DNAI belongs to the second operator, and the third information includes at least one of the following: FQDN, server IP address; or,

The third request includes core network tunnel information under the first operator.
The method of claim 12, further comprising:

The second communication device receives a second request from the first communication device, the second request carries fourth information, and the second request is used to instruct the second communication device to establish a The PDU session or establishing a QoS flow in the PDU session;

The second communication device sends a second response to the first communication device. The second response is used to indicate that the PDU session or QoS flow is successfully established, or the second operator is in the process of establishing the PDU session or QoS flow. , at least one of the fourth information cannot be guaranteed by the second operator.
The method of claim 14, wherein the fourth information includes at least one of the following:

QoS rules;

QoS parameters;

QoS configuration;

Tunnel information; the tunnel information is the core network tunnel information on the first operator side.
A method of sending information, including:

The third communication device sends the first information;

Wherein, the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device ;Second DNAI;

The third communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. supply.
The method of claim 16, wherein the second information is provided based on a PLMN identifier and includes at least one of the following:

FQDN or range of FQDN;

IP address or IP address range;

Instruction information, the instruction information is used to instruct the operation behavior of the first communication device after determining the second DNAI;

Index information of a second communication device, which belongs to the second operator;

Second data network name DNN;

Second S-NSSAI;

The mapping relationship between the second DNN and the first DNN;

The mapping relationship between the second S-NSSAI and the first S-NSSAI;

Second DNAI;

A first DNAI, the first DNAI belongs to the first operator;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
A method of sending information, including:

The fourth communication device receives a first request, where the first request is used to request acquisition of first information;

The fourth communication device sends the first information;

Wherein, the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device ;Second DNAI;

The fourth communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. supply.
The method of claim 18, wherein the second information is provided based on a PLMN identifier and includes at least one of the following:

FQDN or range of FQDN;

IP address or IP address range;

Instruction information, the instruction information is used to instruct the operation behavior of the first communication device after determining the second DNAI;

Index information of a second communication device, which belongs to the second operator;

Second data network name DNN;

Second S-NSSAI;

The mapping relationship between the second DNN and the first DNN;

The mapping relationship between the second S-NSSAI and the first S-NSSAI;

A first DNAI, the first DNAI belongs to the first operator;

Second DNAI;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
A session establishment method, including:

The terminal performs a first operation, and the first operation includes at least one of the following: triggering a fourth request based on the terminal routing policy URSP rule; determining a PDU session matching the application traffic based on the URSP rule; sending a fourth request, the fourth request being The request is used to establish a PDU session;

Wherein, the PDU session is jointly carried by a first operator and a second operator, and the terminal belongs to the first operator.
The method according to claim 20, wherein when the terminal triggers the fourth request or sends the fourth request based on URSP rules, the fourth request includes at least one of the following information:

Second DNN and/or second S-NSSAI;

The first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, and the first S-NSSAI and the second S-NSSAI have a mapping relationship;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
The method of claim 20, wherein:

The URSP rule includes at least one of the following: a second DNN, a second S-NSSAI; wherein the second DNN and the second S-NSSAI belong to the second operator; and/or

The PDU session parameters of the PDU session include at least one of the following: a second DNN, a second S-NSSAI, and the second DNN and the second S-NSSAI belong to the second operator.
The method of claim 20, wherein the URSP rule includes location information, and the location information is used to indicate a location where the URSP rule takes effect.
An information acquisition device, applied to a first communication device, including:

A sending module, configured to send a first request, where the first request is used to request acquisition of first information;

A receiving module, configured to receive the first information, which is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; The mapping relationship of the index information of the second communication device; the second DNAI;

Wherein, the first communication device belongs to a first operator, the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to the second operator or is provided by the second operator. Provided by the operator.
The device according to claim 24, wherein the receiving module is also used for:

According to the first information, the received third information is mapped to the second DNAI corresponding to the third information, or, according to the received third information, the second communication corresponding to the third information is determined. Device index information;

Wherein, the third information is included in the second information.
The device according to claim 24, wherein the device further includes a processing module configured to establish a PDU session for the terminal according to the first information, the PDU session being used by the first operator and the second operator. The terminal is jointly carried by operators, and the terminal belongs to the first operator.
A server access device, applied to a second communication device, including:

A receiving module, configured to receive a third request from the first communication device;

A processing module, configured to select a user plane based on the third request;

Wherein, accessing an edge application server of a second operator is supported through the user plane, the first communication device belongs to the first operator, and the second communication device belongs to the second operator.
The device of claim 27, wherein:

The third request includes a second DNAI; or,

The third request includes a first DNAI, and the first DNAI belongs to the first operator; wherein the method further includes: the second communication device determines a second DNAI based on the first DNAI, the The second DNAI belongs to the second operator; or,

The third request includes third information, the third information is used by the second communication device to determine a second DNAI, the second DNAI belongs to the second operator, and the third information includes at least one of the following: FQDN, server IP address; or,

The third request includes core network tunnel information of the user plane under the first operator.
The device of claim 27, wherein:

The receiving module is also configured to receive a second request from the first communication device, the second request carries fourth information, and the second request is used to instruct the second communication device according to the fourth Information to establish the PDU session or establish a QoS flow in the PDU session;

The device further includes a sending module configured to send a second response to the first communication device. The second response is used to indicate that the PDU session or QoS flow is successfully established, or the second operator is establishing the PDU session. Or during the QoS flow process, at least one of the fourth pieces of information cannot be guaranteed by the second operator.
An information sending device, applied to third communication equipment, including:

A sending module, used to send the first information;

Wherein, the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device ;Second DNAI;

The third communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. supply.
An information sending device, applied to fourth communication equipment, including:

A receiving module, configured to receive a first request, where the first request is used to request acquisition of first information;

A sending module, used to send the first information;

Wherein, the first information is associated with a PLMN identifier, and the first information is used to provide at least one of the following: a mapping relationship between the second information and the second DNAI; a mapping relationship between the second information and the index information of the second communication device ;Second DNAI;

The fourth communication device belongs to the first operator, the second communication device belongs to the second operator, and the second information and/or the second DNAI are related to or provided by the second operator. supply.
A session establishment device, applied to a terminal, including:

A communication module, configured to perform a first operation, the first operation including at least one of the following: triggering a fourth request based on URSP rules; determining a PDU session matching application traffic based on URSP rules; sending a fourth request, the fourth request The request is used to establish a PDU session;

Wherein, the PDU session is jointly carried by the first operator and the second operator, and the terminal is Belongs to the first operator.
The apparatus according to claim 32, wherein when the fourth request is triggered or the fourth request is sent based on the URSP rule, the fourth request includes at least one of the following information:

Second DNN and/or second S-NSSAI;

The first DNN and/or the first S-NSSAI, the first DNN and the second DNN have a mapping relationship, and the first S-NSSAI and the second S-NSSAI have a mapping relationship;

Wherein, the first DNN and the first S-NSSAI belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.
The apparatus of claim 32, wherein the URSP rule includes location information, the location information being used to indicate a location where the URSP rule takes effect.
A terminal, including a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the implementation as claimed in any one of claims 20 to 23 is provided. steps of the method described.
A network side device, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any one of claims 1 to 19 is implemented. The steps of the method described in the item.
A readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the method according to any one of claims 1 to 23 are implemented.