CN117528831A

CN117528831A - Information acquisition and transmission method, server access and session establishment method and equipment

Info

Publication number: CN117528831A
Application number: CN202210908426.1A
Authority: CN
Inventors: 吕华章; 李欢; 孙晓文
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-06
Also published as: WO2024022370A1

Abstract

The embodiment of the application discloses an information acquisition and transmission method, a server access and session establishment method and equipment, which belong to the technical field of communication, and the information acquisition method comprises the following steps: the method comprises the steps that first communication equipment sends a first request, wherein the first request is used for requesting to acquire first information; the first communication device receives the first information, the first information being associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator.

Description

Information acquisition and transmission method, server access and session establishment method and equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to an information acquisition and transmission method, a server access and session establishment method and equipment.

Background

As shown in fig. 2, an edge application server is deployed in operator a, which may provide services for edge computing, such as some edge applications or edge capability openness. It will be appreciated that the terminal belonging to operator a may access this edge application server through operator a's radio access network (Radio Access Network, RAN) and user plane functions (User Plane Function, UPF). However, for a terminal belonging to operator B, since operator B does not deploy an edge application server locally, the terminal must access or access the edge application server of operator a if it wants to use an edge computing service. However, the related art does not provide a related scheme for communication across operators, affecting the communication performance of the terminal.

Disclosure of Invention

The embodiment of the application provides an information acquisition and transmission method, a server access and session establishment method and equipment, which can solve the problem that a terminal cannot communicate across operators and the communication performance of the terminal is affected.

In a first aspect, there is provided an information acquisition method, including: the method comprises the steps that first communication equipment sends a first request, wherein the first request is used for requesting to acquire first information; the first communication device receives the first information, the first information being associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator.

In a second aspect, a server access method is provided, including: the second communication device receiving a third request from the first communication device; the second communication device performs user plane selection based on the third request; and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator.

In a third aspect, there is provided an information transmission method, including: the third communication device sends first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the third communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is associated with or provided by the second operator.

In a fourth aspect, there is provided an information transmission method including: the fourth communication equipment receives a first request, wherein the first request is used for requesting to acquire first information; the fourth communication device sends the first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the fourth 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 or provided by the second operator.

In a fifth aspect, a session establishment method is provided, including: the terminal performs a first operation including at least one of: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

In a sixth aspect, there is provided an information acquisition apparatus applied to a first communication device, comprising: the sending module is used for sending a first request, wherein the first request is used for requesting to acquire first information; a receiving module, configured to receive the first information, where the first information is associated with a PLMN identifier, and the first information is used to provide at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator.

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

An eighth aspect provides an information transmitting apparatus applied to a third communication device, comprising: the sending module is used for sending the first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the third communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is associated with or provided by the second operator.

A ninth aspect provides an information transmitting apparatus applied to a fourth communication device, comprising: the receiving module is used for receiving a first request, wherein the first request is used for requesting to acquire first information; the sending module is used for sending the first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the fourth 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 or provided by the second operator.

In a tenth aspect, there is provided a session establishment apparatus applied to a terminal, including: a communication module for performing a first operation, the first operation comprising at least one of: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

In an eleventh aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to the fifth aspect.

In a twelfth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to perform a first operation, and the first operation includes at least one of: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

In a thirteenth aspect, there is provided a network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to any one of the first to fourth aspects.

In a fourteenth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the processor and the communication interface are configured to implement the steps of the method according to any one of the first to fourth aspects.

In a fifteenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the method according to any of the first to fifth aspects.

In a sixteenth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to any of the first to fifth aspects.

In a seventeenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method according to any of the first to fifth aspects.

In an embodiment of the present application, the first communication device receives first information associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator. According to the method and the device, the first information is used for indicating the second information, the second DNAI, the second communication equipment and the like in the second operator to the first communication equipment in the first operator, so that the first communication equipment can understand the information and can further realize communication with the second operator, cross-operator communication of the terminal is facilitated, and communication performance of the terminal is improved.

Drawings

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

fig. 2 is a schematic diagram of a prior art terminal desiring to access a server in a destination operator;

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

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

fig. 5 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

fig. 6 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

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

fig. 8 is a schematic flow chart of an information transmission method according to an embodiment of the present application;

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

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

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

fig. 12 is a schematic structural view of an information acquisition apparatus according to an embodiment of the present application;

fig. 13 is a schematic structural view of a server access device according to an embodiment of the present application;

fig. 14 is a schematic structural view of an information transmission apparatus according to an embodiment of the present application;

fig. 15 is a schematic structural view of an information transmission apparatus according to an embodiment of the present application;

fig. 16 is a schematic structural view of a session establishment apparatus according to an embodiment of the present application;

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

Fig. 18 is a schematic structural view of a terminal according to an embodiment of the present application;

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

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 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 device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The information acquisition and transmission method, the server access method and the session establishment method provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.

As shown in fig. 3, the embodiment of the present application provides an information acquisition method 300, which may be performed by a first communication device, in other words, the method may be performed by software or hardware installed in the first communication device, and the method includes the following steps.

S302: the first communication device sends a first request for requesting acquisition of first information.

S304: the first communication device receives the first information, the first information being associated with a public land mobile network (Public Land Mobile Network, PLMN) identity, the first information being for providing at least one of: mapping relation between the second information and the second data network access identifier (Data Network Access Identity, DNAI); mapping relation between the second information and index information of the second communication equipment; a second DNAI.

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

It should be noted that, the first operator mentioned in each embodiment of the present application may refer to an operator corresponding to the first PLMN ID; the second operator may refer to an operator corresponding to a second PLMN ID, where the PLMN ID identifies an operator network and the first PLMN ID is different from the second PLMN ID. It will be appreciated 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 may be a policy control function (Policy Control Function, PCF), where the first communication device belongs to a first operator, and the first operator may be a terminal home operator, and may be hereinafter referred to as an operator B. It is understood that the first PLMN is a Home PLMN (HPLMN) of the terminal.

In this embodiment, the first communication device may send a first request to the network opening function (Network Exposure Function, NEF) such that the NEF may interact with the unified data store (Unified Data Repository, UDR) to obtain the first information, and then the NEF sends the first information to the first communication device. Wherein the first information stored in the UDR may be provided by an application function (Application Function, AF), which may obtain the first information from the second operator.

For example, the first communication device sends a mapping subscription request or a mapping acquisition request, that is, a first request, to the NEF: the request is for obtaining the first information, and therefore, in the first request, at least one parameter may be carried for indicating that the first information is obtained, where the parameter includes: a second PLMN ID, a first data network name (Data Network Name, DNN), a first single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-nsai), a second DNN, a second S-nsai, an IP address of a server or FQDN of a server (queried by DNS server and forwarded to the first communication device by EASDF), an IP address of a terminal, terminal location information, such as tracking area identity (Tracking Area Identifier, TAI) of the terminal, cell identity (cell ID) of the terminal, etc.

Then, after receiving the mapping relation subscription request or the mapping relation obtaining request, the NEF sends the mapping relation subscription request or the mapping relation obtaining request, that is, the NEF sends a first request to the fourth communication device UDR, for requesting to obtain the first information from the UDR. For example, the NEF sends a nudr_dm_query Request to the UDR, and queries or retrieves the first information. The first request comprises at least one of the following parameters: the second PLMN ID, the first DNN, the first S-nsai, the second DNN, the second S-nsai, the IP address of the server or the FQDN of the server (which is queried by the DNS server and forwarded to the first communication device by the EASDF), the terminal IP address, the terminal location information, e.g., 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 the NEF by: nudr_dm_query Response, then the NEF sends the first information to the first communication device, such as the first SMF, through nnef_easliployment_notify or nnef_easliployment_get Response.

The first information is associated with a PLMN identity, which in this embodiment may be provided by the second operator to the first operator, which may be the terminal destination operator (or referred to as the roaming operator), and which may subsequently be referred to as operator a, for example.

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

1) Mapping relation of the second information and the second data network access identity (Data Network Access Identity, DNAI).

In this embodiment, after receiving some or all of the second information (hereinafter referred to as third information), the first communication device may determine the second DNAI according to the mapping relation. Specifically, for example, after the first communication device receives the IP address or the fully qualified domain name (Fully Qualified Domain Name, FQDN) of the application server of the second operator, the second DNAI of the second operator may be determined according to the first information, according to the FQDN, the IP address or the address field, the terminal location, and other information. After the first communication device determines the second DNAI, the first communication device may further trigger the second communication device in the second operator to select a user plane according to the second DNAI, and configure a routing rule, where accessing an edge application server in the second operator is supported by the user plane, so as to facilitate inter-operator communication.

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

In this embodiment, the second communication device may be a second SMF, the second communication device belonging to a 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 perform user plane selection based on the second DNAI, where the user plane supports access to an edge application server in the second operator, and so on, so as to facilitate inter-operator communication. Specifically, for example, after the first communication device determines the second DNAI, it may be determined that the second DNAI is related to the second operator according to the mapping relationship, and the second DNAI is related to the second communication device. The second communication device may perform operations such as selection of the user plane according to the second DNAI, as indicated by the first information. Thus, according to this mapping relationship, the IP address of the second communication device can be directly determined from the index information of the second DNAI and the second communication device. The first communication device may then trigger the second communication device in the second operator to perform a user plane selection and configuration request, for example, trigger the second communication device in the second operator to select a user plane according to the second DNAI and configure a routing rule.

3) A second DNAI.

Since the second DNAI is associated with or provided by the second operator, typically the first communication device of the first operator is not understood. Or, when the first operator receives any one of the second information, the first operator does not know the DNAI corresponding to the information, and thus cannot perform subsequent operations. The embodiment may indicate, through the first information, that all parameters listed in the second information are equivalent to the second DNAI, for example, on one hand, indicate that the second DNAI is related to the second operator, so that the first communication device may understand that the second DNAI, and further, understand that the second DNAI belongs to the second operator, and further, may trigger the second communication device in the second operator to select a user plane according to the second DNAI, configure a routing rule, and on the other hand, when the first operator receives at least one of the second information, according to the first information, may convert part or all of the second information into the second DNAI corresponding to the second DNAI according to the mapping relationship indicated by the first information. For example, when the first communication device receives a server IP address (the server IP address may be obtained through DNS response forwarded by the EASDF), the first communication device does not know which DNAI the server IP address corresponds to, and when this time, the first information may indicate what the second DNAI corresponding to the IP address is, and the second DNAI belongs to the second operator, and may further directly send the second DNAI to the second communication device according to the index information of the second communication device indicated in the first information, to perform user plane selection in the second operator, so as to support access to an edge application server (the IP address of the edge application server, that is, the server IP address in the DNS response received by the first communication device from the EASDF) and so on, so as to facilitate cross-operator communication.

According to the information acquisition method provided by the embodiment of the application, first communication equipment receives first information associated with PLMN identification, wherein the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator. According to the method and the device, the first information is used for indicating the second information, the second DNAI, the second communication equipment and the like in the second operator to the first communication equipment in the first operator, so that the first communication equipment can understand the information and can further realize communication with the second operator, cross-operator communication of the terminal is facilitated, and communication performance of the terminal is improved.

Optionally, on the basis of the embodiment shown in fig. 3, the method further includes: the first communication device maps the received third information into the second DNAI corresponding to the third information according to the first information, or determines index information of the second communication device corresponding to the third information according to the received third information; wherein the third information is included in the second information.

In this embodiment, the third information may be from a terminal, which is affiliated with 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 includes only the FQDN. Because the third information belongs to the second information, after the first communication device receives the third information, the first communication device can determine the second DNAI according to the mapping relationship between the second information in the first information and the second DNAI, and for example, determine the second communication device 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 related information sent from the EASDF edge server discovery function to the SMF. For example, the first communication device, from the EASDF, via signaling: neasdf_DNSContext_NotifyRequest, sends a DNS response (including an IP address of a server deployed under the second carrier or FQDN of the server) to the first communication device. At this time, the third information obtained by the first communication apparatus is: the IP address of the server or the FQDN of the server. At this time, after the first communication device receives the third information, the first communication device does not know the target DNAI corresponding to the server IP address or the FQDN, so the first communication device needs to search the DNAI corresponding to the server IP address or the FQDN through the first request.

Optionally, the second information is provided based on a PLMN identifier (e.g. a PLMN identifier of the second operator), that is, each set of second information is associated with a PLMN ID, and when the first communication device uses third information to compare with the second information, and finds that the third information matches or is the same as at least one second information, it may be determined that the second DNAI corresponding to the third information belongs to the PLMN ID associated with the second information, and the second information may include at least one of:

1) A domain name (Fully Qualified Domain Name, FQDN) or a range of FQDNs, which are related to or provided by the second operator, e.g. FQDNs of edge application servers in the second operator, is fully defined.

2) An IP address or a segment of IP addresses (IP address or IP address range) associated with or provided by the second operator, e.g. the IP address of an edge application server in the second operator.

3) And the indication information is used for indicating the operation behavior of the first communication equipment after the second DNAI is determined. The operation is, for example, triggering a second communication device in the second operator to select a user plane, configure a routing rule, etc. according to the second DNAI. The indication information may also indicate that any parameter, such as an IP address or an address segment, etc., is reachable through the N9 tunnel. The first communication device, after obtaining the indication information, triggers a second request to the second communication device: instead of performing the selection of the user plane within the first operator, nsmf_pduse_create Request. That is, after the first communication device obtains the indication information, an N9 tunnel establishment procedure to the second operator, or a cross-operator PDU session establishment procedure, is performed. Otherwise, the first communication device may directly forward the packet accessing the IP address of the server under the second operator to the default DN (e.g., the first DNN) by using a default routing method, and then route the packet through the internet. The N9 tunnel information is one kind of core network tunnel information CN tunnel info.

4) Index information of a second communication device, the second communication device belonging to the second operator. The index information of the second communication device may be used for the first communication device to trigger the second communication device to perform user plane selection based on the second DNAI, and so on. The action is that after the first communication device obtains the second DNAI corresponding to the third information according to the first information, the second DNAI can be directly known from the first information, and the second DNAI can be used by the second communication device to perform user plane selection. So that the first communication device does not need to perform the search procedure of the second communication device.

5) -a second data network name (Data Network Name, DNN), the second DNN belonging to the second operator.

6) -second single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-nsai), the second S-nsai belonging to the second operator.

7) And the mapping relation between the second DNN and the first DNN, wherein 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 nsmf_pduse_ CreateSMContext Request sent by the AMF, where the request includes the first DNN), the first communication device may map the first DNN to a second DNN that may be used in the second operator according to the first information. Or mapping to a second DNN used in an equivalent second operator according to the first DNN.

8) And the mapping relation between the second S-NSSAI and the first S-NSSAI, wherein 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 nsmf_pduse_ CreateSMContext Request sent by the AMF, where the request includes the first S-nsai), the first communication device may map the first S-nsai to a second S-nsai that may be used in the second operator according to the first information. Or mapped to a second S-nsai for use in an equivalent second operator based on the first S-nsai.

9) A first DNAI, the first DNAI belonging to the first operator. When the first communication device receives the third information, and the third information includes the first DNAI, the second DNAI equivalent to the third information can be obtained and determined according to the first information.

10 A second DNAI associated with or provided by a second operator. When the first communication device receives the third information, and the third information is any one of the above second information, the second DNAI equivalent to the third information can be obtained and determined according to the first information.

On the basis of the above embodiments, the method further includes: the first communication device receives third information, wherein the third information is contained in the second information, and the third information can be sent by a terminal in the first operator; 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, where the second communication device is configured to perform user plane selection based on the second DNAI, and support access to an edge application server indicated in the third information through the user plane, where the second communication device belongs to the second operator; the first communication device transmits at least one of the following to the second communication device: 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 for the PDU session for the user plane function on the N3/N9 tunnel.

The embodiment is beneficial to realizing that the terminal accesses the second operator edge application server across operators, and improves the communication performance of the terminal.

In parallel with the above embodiment, the method further includes: the first communication device receives third information, wherein the third information is contained in the second information, and the third information can be sent by a terminal in the first operator and can be received from other 5G core network elements; the first communication device determining a first DNAI based on the third information, the first DNAI belonging to the first operator; or, the first communication device determines a second DNAI based on the third information and the first information, the second DNAI belonging to the second operator; the first communication device determines a second DNAI corresponding to the third information or determines a second communication device corresponding to the third information according to the first information and the third information, where 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_pduse_create Request. The signaling carries: first DNAI, second DNAI, third information.

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

1) The second DNAI, wherein the first communication device is configured to determine, based on the first information, the second DNAI corresponding to the first DNAI. That is, 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, the first communication device directly transmits the first DNAI to the second communication device, which may determine the second DNAI based on the first information.

3) The third information is used by the second communication device to determine the second DNAI, where the second DNAI belongs to the second operator, and the third information includes at least one of the following: FQDN, server IP address. That is, the first communication device sends the third information to the second communication device, and the second communication device may determine, according to the first information, a second DNAI corresponding to or equivalent to the third 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 for PDU session for user plane function on the N3/N9 tunnel.

The above embodiments introduce the solution for a terminal to access a second operator edge application server across operators, and in combination with several embodiments, the procedure for setting up a protocol data unit (Protocol Data Unit, PDU) session across operators will be described below.

Optionally, on the basis of the embodiment shown in fig. 3, the method further includes: the first communication device establishes a PDU session for a terminal according to the first information, the PDU session is carried by the first operator and the second operator together, or 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, wherein the second communication device belongs to the second operator, the second request carries fourth information, and the second request is used for indicating the second communication device to establish the PDU session or establish a QoS stream in the PDU session according to the fourth information; the first communication device receives a second response from the second communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or that the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

For example, the first communication device sends an nsmf_pduse_create Request to the second communication device for establishing the PDU session. The signaling includes fourth information. The fourth information is used by the second communication device (i.e., SMF in the second operator) to configure various indexes and parameters of QoS of the PDU session under the second operator.

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

For example, the fourth information includes at least one of the following (QoS index of the cross-operator PDU session): 5QI (5G QoS Identifier), allocation and retention priority (Allocation and Retention Priority, ARP), (upstream and downstream) guaranteed stream Bit Rate (Guaranteed Flow Bit Rate, GFBR,), (upstream and downstream) Maximum stream Bit Rate (Maximum Flow Bit Rate, MFBR,), (upstream and downstream) Maximum packet loss Rate (Maximum Packet Loss Rate), (upstream and downstream) Session aggregate stream Bit Rate (Session-AMBR), (upstream and downstream) terminal aggregate stream Bit Rate (UE-AMBR), terminal per-Slice Maximum Bit Rate (UE per-Maximum Bit Rate, UE-Slice-MBR), quality of service stream identification (Qos Flow Identity, QFI).

Optionally, before the first communication device establishes the PDU session for the terminal, the method further comprises: the first communication device receives a fourth request from the terminal, wherein the fourth request is used for requesting to establish a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

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

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

1) A second DNN and/or a second S-nsai, the second DNN and the second S-nsai belonging to the second operator. For example, the terminal requests to establish a PDU session to the second operator, and therefore, the fourth request carries DNN of the second operator and S-NSSAI of the second operator.

2) A first DNN and/or a first S-NSSAI, wherein a mapping relation exists between the first DNN and a second DNN, and a mapping relation exists between the first S-NSSAI and a second S-NSSAI, 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, the method further comprises at least one of: 1) The first communication device determines a second DNAI according to the first information and the second DNN and/or the second S-NSSAI; 2) 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, and determines the second DNAI according to the first information and the second DNN and/or the second S-NSSAI.

In this embodiment, after the first communication device determines the second DNAI, the first communication device may further trigger the second communication device in the second operator to establish the PDU session according to the second DNAI, or configure a routing rule for the PDU session, etc., so that the terminal may communicate across operators through the PDU session across operators, thereby improving the communication performance of the terminal.

An information acquisition method according to an embodiment of the present application is described in detail above in connection with 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 will be appreciated that the interaction of the second communication device with the first communication device described from the second communication device is the same as or corresponds to the description of the first communication device side in the method shown in fig. 3, and the relevant description is omitted appropriately to avoid repetition.

Fig. 4 is a schematic flow chart of an implementation of a server access method in an embodiment of the present application, which may be applied to a second communication device. As shown in fig. 4, the method 400 includes the following steps.

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

S404: the second communication device performs user plane selection based on the third request; and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator.

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

The foregoing embodiments refer to the second request, and 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.

According to the server access method provided by the embodiment of the application, the second communication equipment receives a third request from the first communication equipment; the second communication device performs user plane selection based on the third request; and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator. The embodiment of the application is beneficial to realizing the inter-operator access of the terminal to the edge application server, and improves the communication performance of the terminal.

Optionally, as an embodiment, the third request includes a second DNAI; alternatively, the third request includes a first DNAI, which belongs to the first operator; wherein the method further comprises: the second communication device determining a second DNAI based on the first DNAI, the second DNAI belonging to the second operator; alternatively, the third request includes third information for the second communication device to determine a second DNAI, the second DNAI belonging to the second operator, the third information including at least one of: FQDN, server IP address; or, the third request includes core network tunnel information under the first operator, where the core network tunnel information includes a tunnel identifier and or an IP address used by a user plane function on the N3/N9 tunnel for PDU session.

Optionally, as an embodiment, the method further includes: the second communication device receives a second request from the first communication device, wherein the second request carries fourth information and is used for indicating the second communication device to establish the PDU session or establish a QoS stream in the PDU session according to the fourth information; the second communication device sends a second response to the first communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

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

Fig. 5 is a schematic flow chart of an implementation of the information sending method in the embodiment of the present application, which may be applied to a third communication device. As shown in fig. 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 identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the third communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is associated with or provided by the second operator.

In this embodiment, the third communication device may be an AF or a 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 the NEF.

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

According to the information sending method provided by the embodiment of the application, the third communication equipment sends first information associated with the PLMN identifier, and the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the third 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 or provided by the second operator. According to the method and the device for realizing the communication between the terminal and the second carrier, the second information in the second carrier, the second DNAI, the second communication equipment and the like are indicated through the first information, equipment in the first carrier such as the first communication equipment is facilitated, the information is understood, and then communication with the second carrier can be realized, cross-carrier communication of the terminal is facilitated, and communication performance of the terminal is improved.

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

1) FQDN or range of FQDNs.

2) IP address or IP address segment.

3) And the indication information is used for indicating the operation behavior of the first communication equipment after the second DNAI is determined.

4) Index information of a second communication device, the second communication device belonging to the second operator.

5) And a second DNN.

6) And a second S-NSSAI.

7) Mapping relation between the second DNN and the first DNN.

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

9) A first DNAI, the first DNAI belonging to the first operator.

10 Second DNAI).

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

Fig. 6 is a schematic flow chart of an implementation of the information sending method in the embodiment of the present application, which may be applied to a fourth communication device. As shown in fig. 6, the method 600 includes the following steps.

S602: the fourth communication device receives a first request for requesting acquisition of first information.

S604: the fourth communication device sends the first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI.

The fourth 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 or provided by the second operator.

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.

According to the information sending method provided by the embodiment of the application, the fourth communication device sends first information associated with the PLMN identifier, and the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the third 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 or provided by the second operator. According to the method and the device for realizing the communication between the terminal and the second carrier, the second information in the second carrier, the second DNAI, the second communication equipment and the like are indicated through the first information, equipment in the first carrier such as the first communication equipment is facilitated, the information is understood, and then communication with the second carrier can be realized, cross-carrier communication of the terminal is facilitated, and communication performance of the terminal is improved.

1) FQDN or range of FQDNs.

2) IP address or IP address segment.

5) And a second DNN.

6) And a second S-NSSAI.

7) Mapping relation between the second DNN and the first DNN.

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

9) A first DNAI, the first DNAI belonging to the first operator.

10 Second DNAI).

Fig. 7 is a schematic flow diagram of a session establishment method in an embodiment of the present application, which may be applied to a terminal. As shown in fig. 7, the method 700 includes the following steps.

S702: the terminal performs a first operation including at least one of: triggering a fourth request based on terminal routing policy (UE Route Selection Policy, urs) rules; determining a PDU session matching the application traffic based on the URSP rules; a fourth request is sent for establishing a PDU session.

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

According to the session establishment method provided by the embodiment of the application, the terminal executes a first operation, wherein the first operation comprises at least one of the following steps: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; and sending a fourth request, wherein the fourth request is used for establishing a PDU session, the PDU session is carried by a first operator and a second operator together, and the terminal belongs to the first operator. The embodiment of the application is beneficial to the terminal to carry out inter-operator communication through the inter-operator PDU session, and improves the communication performance of the terminal.

Optionally, as an embodiment, in a case that the terminal triggers or sends a fourth request based on a urs rule, the fourth request includes at least one of the following information: 1) A second DNN and/or a second S-NSSAI; 2) The system comprises a first DNN and/or a first S-NSSAI, wherein a mapping relation exists between the first DNN and a second DNN, and a mapping relation exists between the first S-NSSAI and a second S-NSSAI; wherein the first DNN and the first S-nsai 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 urs rule triggering the fourth request may include a second DNN and/or a second S-NSSAI; a first DNN and/or a first S-NSSAI.

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

Optionally, as an embodiment, the urs rule includes location information, where the urs rule is effective.

For example, the urs may only be used for terminals in specific locations. At this time, the terminal may trigger the establishment of a PDU session to the second operator using the second DNN in the urs, the second S-nsai; alternatively, the first DNN, the first S-nsai, is triggered to establish a PDU session to the second operator, but the first communication device SMF within the first operator may convert the first DNN, the first S-nsai, into the second DNN, the second S-nsai, based on the first information.

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

Example 1

The embodiment mainly describes that the AF provides the first information, whether the AF is trusted or not, and the AF needs to provide the first information to the UDR through the NEF, as shown in fig. 8, and the embodiment includes the following steps.

Step 1: the AF provides the NEF with first information of other operators, such as the second operator.

The first information is to compare the first information according to the FQDN, the IP address or address field, the UE location, and the like when the first communication device receives the third information, determine a second DNAI mapped by the third information according to the comparison, and then determine the second DNAI in the second operator.

This embodiment has two operators:

home operator, i.e. the operator where the terminal is located, i.e. the first operator or operator B;

the destination operator, also called roaming location, refers to the operator providing the edge computing service, serving the second DNAI, i.e. the second operator or operator a. The PDU session or IP flow needs to be established to an edge application server in the second operator.

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

step 2: the NEF processes the first information.

Step 3: the NEF writes the first information into the UDR, the following signaling can be used: a data management creation or Update request (nudr_dm_create/Update request).

The first information may be written into the following data set or data subset: the Data set (Data set) is in the Application Data (Application Data); the subset of Data (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 used data key is a subscription permanent identifier (Subscription Permanent Identifier, SUPI), or the used data key is a first DNN and/or a first S-NSSAI; the first DNN and/or the first S-nsai are used at the home operator, i.e. the first operator. The data key used may also be an internal group ID (internal group ID), i.e. the first information provided to a group of terminals.

Step 4: the UDR sends a response message to the NEF, such as a data management creation or Update response (nudr_dm_create/Update response).

Step 5: the NEF sends a response message to the AF.

Example two

This embodiment mainly describes that the first SMF obtains or recovers the first information, where the first SMF may obtain the first information from the UDR, and the specific flow is shown in fig. 9, and includes the following steps:

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

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

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

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

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

Example III

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

In this embodiment, the destination operator a may provide dnn+s-nsai to the home operator B, and the purpose of these two parameters is mainly to enable the network to ensure that the terminal establishes a PDU session across operators, for example, the UE may trigger the establishment of the PDU session with the dnn+s-nsai of the destination operator.

However, for ease of maintenance, it is possible that after the destination operator provides the dnn+s-nsai, the home operator may make a conversion to information that the terminal can understand, or alternatively, a substitute for the dnn+s-nsai maintained at the home operator, as shown in the following table.

Destination operator a	Home operator B
		Second DNN (e.g., CMCC. Local. DN)	First DNN after mapping (e.g., CUC. CMCC. Local. DN)
Second S-NSSAI (e.g., S-NSSAI-CMCC)	First DNN after mapping (e.g., S-NSSAI-CUC-CMCC)

Wherein the DNN and/or S-NSSAI after the home operator B has done mapping can be issued to the terminal.

The mapping in the table may be stored in the UDR. The AF provides either DNN or S-NSSAI for operator A first, and then is converted by the first SMF.

Example IV

This embodiment mainly describes the DNS procedure, and as shown in fig. 10, this embodiment includes the following steps:

step 1: the terminal performs a PDU session establishment procedure with the first SMF.

Step 2: the first SMF selects an edge application service discovery function (Edge Application Server Discovery Function, EASDF).

Step 3: the first SMF sends a domain name resolution system context setup Request (neasdf_dnscontext_create Request) to the EASDF.

Step 4: the EASDF sends a domain name resolution system context setup Response (EASDF dnscontext_create Response) to the first SMF

Step 5: the first SMF sends a domain name resolution system context Update Request Neasdf_DNSContext_update Request to the EASDF

Step 6: EASDF sends a 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, i.e., a DNS Query, to the EASDF.

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

Step 9: the first SMF sends a domain name resolution system context notification Response (Neasdf DNSContext Notify Response) to the EASDF.

Step 10: the first SMF sends a domain name resolution system context Update Request (neasdf_dnscontext_update Request) to the EASDF.

Step 11: the EASDF sends a domain name resolution system context Update Response (Neasdf DNSContext Update Response) to the first SMF.

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

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

Step 14: the 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 including: server IP address, server FQDN, the server is in the second operator.

The EASDF issues a DNS request to the first SMF, where the DNS request includes an FQDN, EAS IP address, etc.

Step 15: the first SMF sends a domain name resolution system context notification Response (Neasdf DNSContext Notify Response) to the EASDF.

Step 16: the first SMF obtains 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 discovers that based on this EAS IP address, either the DNAI of the opposite operator can be determined or the DNAI cannot be determined. Or, the first SMF cannot determine which operator, or DNAI of which operator, based on the EAS IP address.

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

In addition, the first SMF may further determine, according to the first information, a second communication device to be interacted (second SMF) in step 18; the first SMF may also determine, according to the first information, that in step 17, a user plane accessing the second operator network needs to be selected, which is determined according to the indication information in the first information, so that the first communication device will not perform a default routing manner, i.e. route the DNAI-incapable data packet to the EAS via the default DN (e.g. the first DNN, or the Internet network) via the Internet.

Step 17: the first SMF performs PDU session anchor (PDU Session Anchor, PSA) selection and ULCL selection at the home side.

After the first SMF determines to be the DNAI of the opposite operator, the home UL CL, or PSA, may be selected for N9 interworking with the PSA of operator a.

Selecting a user plane within the range of the first operator may be based on the first DNAI, the selected user plane being also a user plane capable of N9 tunnel interworking with the PSA of the second operator.

Step 18: the first SMF selects a second SMF of PLMN B and then the PSA is selected by the second SMF according to the second DNAI.

The first SMF may send a PDU session establishment or Update Request (nsmf_pduse_create/Update Request) to the second SMF, carrying the second DNAI. Or carries the first DNAI, or the third information, and then mapped to the second DNAI by the second SMF according to the first information. And at the same time, the N9 tunnel information (N9 tunnel info) of the user plane under the first operator is carried. Or carries core network Tunnel information (CN Tunnel Info) under the first operator. The tunnel information includes a tunnel identifier and or an IP address for the PDU session for the user plane function on the N3/N9 tunnel.

Step 19: the second SMF performs UPF selection according to the second DNAI.

Step 20: the second SMF performs an N4 procedure or N4 procedure (N4 procedure) with the second UPF. In this N4 procedure, N9 tunnel information (e.g., the user plane of the first operator, provided with the tunnel information) needs to be configured.

Step 21: the second SMF may send a PDU session setup or Update Response (nsmf_pduse_create/Update Response) to the first SMF. And the updating response carries N9 tunnel information (N9 tunnel info) of the user plane in the second operator.

Step 22: update UPF, e.g., update information of N9 tunnel. After such updating, the user plane in the first operator and the user plane in the second operator are in communication with each other, and the N9 tunnel (i.e., the user plane in the first operator knows the N9 tunnel information of the user plane in the second operator, and 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 the EASDF.

Step 24: the EASDF sends a domain name resolution system context Update Response (Neasdf DNSContext Update Response) to the first SMF.

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

In yet another design method, the first SMF looks up from the UDR based on the IP address, looking up a first DNAI that can be identified by its own operator, but this also requires operator B to make the UPF selection.

Thus, the first SMF first selects a UPF based on this first DNAI; the first SMF then triggers step 18 to the second SMF: the converted first DNAI applied to operator B may be carried or the second DNAI used by operator a may be sent.

Example five

This embodiment mainly introduces a cross-operator PDU session establishment procedure, i.e. how to establish a PDU session across an operator to access servers of other operators, as shown in fig. 11, comprising the steps of:

step 1: the terminal triggers a PDU session establishment request, wherein the PDU session establishment request carries a second DNN and/or a second S-NSSAI of a second operator; alternatively, the first DNN and/or the first S-NSSAI are carried, except that this first DNN and first S-NSSAI are corresponding to operator A.

Step 2: AMF performs SMF selection.

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

Step 4: the first SMF performs a subscription retrieval or update procedure with the UDM (Subscription retrieval or for update).

Step 5: the first SMF sends a PDU session establishment session management context response (nsmf_pduse_ CreateSMContext Response) to the AMF.

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

Step 7: the first SMF makes PCF selections.

Step 8: the first SMF performs a session management policy related setup procedure with the first PCF (SM policy association establishment).

The session policy in the operator B is included in this process, or the fourth information is carried, and the session policy in the operator a is also included. The session policy includes a number of contents such as 5QI (5G qos ID), ARP priority, etc. of the PDU session.

Carrier B needs to determine this inter-carrier PDU session at the same time, policies in carrier B and in carrier a, since the terminal has requested DNN, S-nsai from other carriers.

Step 9: the first SMF makes a UPF selection.

Step 10: the first SMF performs an N4 procedure setup or response procedure (N4 procedure establishment/response) with the first UPF

Step 11: this setup procedure is triggered to operator a, since the terminal has requested DNN, S-NSSAI of other operators.

This signaling includes SM policy, e.g., 5G QoS related parameters, for the PDU session for operator a, and also N9 tunnel information for the selected user plane in operator a, second DNAI. Or carries core network Tunnel information (CN Tunnel Info) under the first operator. The tunnel information includes a tunnel identifier and or an IP address for the PDU session for the user plane function on the N3/N9 tunnel.

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

Step 12: the second SMF makes a UPF selection. The user plane selection is also in accordance with the second DNAI.

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

Step 14: the second SMF may send a PDU session establishment Response (nsmf_pduse_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_pduse_update Request) to the second SMF.

Step 15b: the second SMF may send a PDU session Update Response (nsmf_pduse_update Response) to the first SMF.

If in step 14, operator a does not support some SM policy, for example ARP for the session, or 5QI, then the purpose of steps 15a and 15B is to let operator a and operator B negotiate and re-communicate and generate session policies.

For example, there may be a SM policy association modification to modify policy in operator a after step 14, and then step 15, to update to operator a.

This embodiment provides that the QoS of the second SMF of operator a may include the following: qoS in the VPLMN contains 5QI and corresponding ARP values so that the VPLMN can accept the relevant QoS flows (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 performs an N4 process (N4 process) with the first UPF.

Step 17: the first SMF performs N1N2message transfer (namf_communication_n1n2message transfer) with the AMF.

Step 18: the AMF sends an N2PDU session request (N2 PDU Session Request) to the RAN.

Step 19: the RAN performs an RRC reconfiguration procedure with the UE (RRC reconfiguration).

Step 20: the RAN sends an N2PDU session request acknowledgement (N2 PDU Session Request Ack) to the AMF.

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

Step 22: the first SMF performs an N4 procedure modification procedure (N4 procedure modification) with the first UPF.

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

This embodiment eventually completes one cross-operator PDU session from operator B to operator a.

Example six

This embodiment mainly introduces the design of the urs rules. The terminal can establish a PDU session to a cross-operator according to URSP rules; alternatively, traffic is matched into a certain cross-operator PDU session.

For example, for a certain IP address, the FQDN (corresponding to the IP descriptor, or domain descriptor domain descriptor), or the application descriptor (APP descriptor) traffic, may be matched to or create a PDU session across operators.

The urs rules mainly include traffic descriptors and routing components (Route Selection Components, RSC) etc., see the following table for details.

The DNN in the table below is one that accesses operator a.

In the routing component (Route Selection Components, RSC) of the routing descriptor (Route Selection Descriptor, RSD), both S-nsai and DNN are either to the opposite operator, or, through PCF conversion, the opposite operator S-nsai, DNN is converted to DNN used in its own operator, which conversion can be accomplished by the PCF.

The PCF, which may also be the first communication device, then recovers the first information from the fourth communication device UDR and then, when the third information is received by the first communication device, the PCF may convert the third information (e.g., the first DNN, the first S-nsai) into the second DNN, the second S-nsai.

Additionally, a location standard (Location Criteria) is included in the RSC, i.e., the RSD is only available at a particular location, such as the current location, accessible or accessible.

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

A sending module 1202 is configured to send a first request, where the first request is used to request to obtain first information.

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

The information acquisition device provided by the embodiment of the application, the first communication equipment receives first information associated with the PLMN identifier, and the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the first communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is related to or provided by the second operator. According to the method and the device, the first information is used for indicating the second information, the second DNAI, the second communication equipment and the like in the second operator to the first communication equipment in the first operator, so that the first communication equipment can understand the information and can further realize communication with the second operator, cross-operator communication of the terminal is facilitated, and communication performance of the terminal is improved.

Optionally, as an embodiment, the receiving module 1204 is further configured to: mapping the received third information into the second DNAI corresponding to the third information according to the first information, or determining index information of the second communication equipment corresponding to the third information according to the received third information; wherein the third information is included in the second information.

Optionally, as an embodiment, the apparatus further includes a processing module, configured to establish a PDU session for a terminal according to the first information, where the PDU session is carried by the first operator and the second operator together, and the terminal is attributed to the first operator.

The apparatus 1200 according to the embodiment of the present application may refer to the flow of the method 300 corresponding to the embodiment of the present application, and each unit/module in the apparatus 1200 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 300, and may achieve the same or equivalent technical effects, which are not described herein for brevity.

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

A receiving module 1302 is configured to receive a third request from the first communication device.

A processing module 1304, configured to perform user plane selection based on the third request; and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator.

In the server access device provided by the embodiment of the application, the second communication device receives the third request from the first communication device; the second communication device performs user plane selection based on the third request; and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator. The embodiment of the application is beneficial to realizing the inter-operator access of the terminal to the edge application server, and improves the communication performance of the terminal.

Optionally, as an embodiment, the third request includes a second DNAI; alternatively, the third request includes a first DNAI, which belongs to the first operator; wherein the method further comprises: the second communication device determining a second DNAI based on the first DNAI, the second DNAI belonging to the second operator; alternatively, the third request includes third information for the second communication device to determine a second DNAI, the second DNAI belonging to the second operator, the third information including at least one of: 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 for PDU session for user plane function on the N3/N9 tunnel.

Optionally, as an embodiment, the receiving module 1302 is further configured to receive a second request from the first communications device, where the second request carries fourth information, and the second request is used to instruct the second communications device to establish the PDU session or establish a QoS flow in the PDU session according to the fourth information; the apparatus further includes a sending module configured to send a second response to the first communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or that the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

The apparatus 1300 according to the embodiment of the present application may refer to the flow of the method 400 corresponding to the embodiment of the present application, and each unit/module in the apparatus 1300 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 400, and may achieve the same or equivalent technical effects, which are not described herein for brevity.

Fig. 14 is a schematic structural diagram of an information transmitting apparatus according to an embodiment of the present application, which is applied to a third communication device, as shown in fig. 14, an apparatus 1400 includes the following modules.

A sending module 1402, configured to send first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the third communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is associated with or provided by the second operator.

Optionally, the apparatus 1400 further comprises a processing module.

According to the information sending device provided by the embodiment of the application, the third communication equipment sends first information associated with the PLMN identifier, and the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the third 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 or provided by the second operator. According to the method and the device for realizing the communication between the terminal and the second carrier, the second information in the second carrier, the second DNAI, the second communication equipment and the like are indicated through the first information, equipment in the first carrier such as the first communication equipment is facilitated, the information is understood, and then communication with the second carrier can be realized, cross-carrier communication of the terminal is facilitated, and communication performance of the terminal is improved.

The apparatus 1400 according to the embodiment of the present application may refer to the flow of the method 500 corresponding to the embodiment of the present application, and each unit/module in the apparatus 1400 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 500, and may achieve the same or equivalent technical effects, which are not described herein for brevity.

Fig. 15 is a schematic structural diagram of an information transmitting apparatus according to an embodiment of the present application, which is applied to a third communication device, and as shown in fig. 15, an apparatus 1500 includes the following modules.

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

A sending module 1504, configured to send the first information; wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI; the fourth 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 or provided by the second operator.

According to the information sending device provided by the embodiment of the application, the fourth communication equipment sends first information associated with the PLMN identifier, and the first information is used for providing at least one of the following: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; and a second DNAI, wherein the third 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 or provided by the second operator. According to the method and the device for realizing the communication between the terminal and the second carrier, the second information in the second carrier, the second DNAI, the second communication equipment and the like are indicated through the first information, equipment in the first carrier such as the first communication equipment is facilitated, the information is understood, and then communication with the second carrier can be realized, cross-carrier communication of the terminal is facilitated, and communication performance of the terminal is improved.

The apparatus 1500 according to the embodiment of the present application may refer to the flow of the method 600 corresponding to the embodiment of the present application, and each unit/module in the apparatus 1500 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 600, and may achieve the same or equivalent technical effects, which are not described herein for brevity.

Fig. 16 is a schematic structural diagram of a session establishment apparatus according to an embodiment of the present application, which may be applied to a terminal, and as shown in fig. 16, an apparatus 1600 includes the following modules.

A communication module 1602 for performing a first operation, the first operation comprising at least one of: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

Optionally, the apparatus 1600 further comprises a processing module.

The session establishment device provided by the embodiment of the application, the terminal executes a first operation, wherein the first operation comprises at least one of the following steps: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; and sending a fourth request, wherein the fourth request is used for establishing a PDU session, the PDU session is carried by a first operator and a second operator together, and the terminal belongs to the first operator. The embodiment of the application is beneficial to the terminal to carry out inter-operator communication through the inter-operator PDU session, and improves the communication performance of the terminal.

Optionally, as an embodiment, in a case that a fourth request is triggered or sent based on a urs rule, the fourth request includes at least one of the following information: 1) A second DNN and/or a second S-NSSAI; 2) The system comprises a first DNN and/or a first S-NSSAI, wherein a mapping relation exists between the first DNN and a second DNN, and a mapping relation exists between the first S-NSSAI and a second S-NSSAI; wherein the first DNN and the first S-nsai belong to the first operator; the second DNN and the second S-NSSAI belong to the second operator.

The session establishment apparatus 1600 according to the embodiment of the present application may refer to the flow of the method 700 corresponding to the embodiment of the present application, and each unit/module in the apparatus 1600 and the other operations and/or functions described above are respectively for implementing the corresponding flow in the method 700, and can achieve the same or equivalent technical effects, which are not described herein for brevity.

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

Optionally, as shown in fig. 17, the embodiment of the present application further provides a communication device 1700, including a processor 1701 and a memory 1702, where the memory 1702 stores a program or an instruction that can be executed on the processor 1701, for example, when the communication device 1700 is a terminal, the program or the instruction implements the steps of the session establishment method embodiment described above when executed by the processor 1701, and the same technical effects can be achieved. When the communication device 1700 is a network side device, the program or the instruction, when executed by the processor 1701, implements the steps of the above embodiments of the information obtaining and sending method and the server access method, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for executing a first operation, and the first operation comprises at least one of the following steps: triggering a fourth request based on a terminal routing policy URSP rule; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 18 is a schematic hardware structure of a terminal implementing an embodiment of the present application.

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

Those skilled in the art will appreciate that the terminal 1800 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1810 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 18 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1804 may include a graphics processing unit (Graphics Processing Unit, GPU) 18041 and a microphone 18042, with the graphics processor 18041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1806 may include a display panel 18061, which may be configured in the form of a liquid crystal display, organic light emitting diodes, or the like, for the display panel 18061. The user input unit 1807 includes at least one of a touch panel 18071 and other input devices 18072. Touch panel 18071, also referred to as a touch screen. 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, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1801 may transmit the downlink data to the processor 1810 for processing; in addition, the radio frequency unit 1801 may send uplink data to the network device. In general, the radio frequency unit 1801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1809 may be used to store software programs or instructions and various data. The memory 1809 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1809 may include volatile memory or nonvolatile memory, or the memory 1809 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1809 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1810 may include one or more processing units; optionally, the processor 1810 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1810.

The radio frequency unit 1801 may be configured to perform a first operation, where the first operation includes at least one of: triggering a fourth request based on a terminal routing policy URSP rule; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator, the terminal is attributed to the first operator

The terminal provided by the embodiment of the application executes a first operation, wherein the first operation comprises at least one of the following steps: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; and sending a fourth request, wherein the fourth request is used for establishing a PDU session, the PDU session is carried by a first operator and a second operator together, and the terminal belongs to the first operator. The embodiment of the application is beneficial to the terminal to carry out inter-operator communication through the inter-operator PDU session, and improves the communication performance of the terminal.

The terminal 1800 provided in this embodiment of the present application may further implement each process of the above-mentioned session establishment method embodiment, and may achieve the same technical effects, so that repetition is avoided and no further description is given here.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the processor or the communication interface is used for executing the processes of the embodiments of the information acquisition and transmission method and the server access method. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

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

Specifically, the network side device 1900 according to the embodiment of the present invention further includes: instructions or programs stored in the memory 1903 and executable on the processor 1901, the processor 1901 invokes the instructions or programs in the memory 1903 to perform the methods performed by the modules shown in fig. 12 to 15, and achieve the same technical effects, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the processes of the above information obtaining and sending method, the server access method and the session establishment method embodiment are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is provided herein.

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

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the embodiments of the information obtaining and sending method, the server access method, and the session establishment method, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where 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 each process of the embodiments of the information obtaining and sending method, the server access method, and the session establishment method, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. An information acquisition method, characterized by comprising:

the method comprises the steps that first communication equipment sends a first request, wherein the first request is used for requesting to acquire first information;

the first communication device receives the first information, the first information being associated with a public land mobile network, PLMN, identity, the first information being for providing at least one of: mapping relation between the second information and the second data network access identifier DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI;

2. The method according to claim 1, wherein the method further comprises:

the first communication device maps the received third information into the second DNAI corresponding to the third information according to the first information, or determines index information of the second communication device corresponding to the third information according to the received third information;

wherein the third information is included in the second information.

3. The method according to claim 1 or 2, wherein the second information is provided based on a PLMN identifier, comprising at least one of:

fully qualified domain names FQDN or ranges of FQDNs;

IP address or IP address field;

the indication information is used for indicating the operation behavior of the first communication equipment after the second DNAI is determined;

index information of a second communication device, the second communication device belonging to the second operator;

a second data network name DNN;

the second single network slice selects auxiliary information S-NSSAI;

mapping relation between the second DNN and the first DNN;

mapping relation between the second S-NSSAI and the first S-NSSAI;

a first DNAI, the first DNAI belonging to the first operator;

a second DNAI;

4. The method according to claim 1, wherein the method further comprises:

the first communication device receives third information, wherein the third information is contained 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, where the second communication device is configured to perform user plane selection based on the second DNAI, and support access to an edge application server indicated in the third information through the user plane, where the second communication device belongs to the second operator;

the first communication device transmits at least one of the following to the second communication device: and the second DNAI is core network tunnel information under the first operator.

5. The method according to claim 1, wherein the method further comprises:

the first communication device determining a first DNAI based on the third information, the first DNAI belonging to the first operator;

the first communication device determines a second communication device corresponding to third information according to the first information and the third information, wherein the second communication device belongs to the second operator;

the first communication device sends a third request to the second communication device, the third request including at least one of:

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

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 for determining the second DNAI by 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;

and the core network tunnel information under the first operator.

6. The method according to claim 1, wherein the method further comprises:

and the first communication equipment establishes a protocol data unit PDU session for a terminal according to the first information, wherein the PDU session is carried by the first operator and the second operator together, and the terminal belongs to the first operator.

7. The method of claim 6, wherein the first communication device establishing a PDU session for the terminal comprises:

the first communication device sends a second request to a second communication device, wherein the second communication device belongs to the second operator, the second request carries fourth information, and the second request is used for indicating the second communication device to establish the PDU session or establish a QoS stream in the PDU session according to the fourth information;

The first communication device receives a second response from the second communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or that the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

8. The method of claim 7, wherein the fourth information comprises at least one of:

QoS rules;

QoS parameters;

QoS configuration;

tunnel information; the tunnel information is the tunnel information of the first operator side, and the tunnel information comprises a tunnel identifier.

9. The method of claim 6, wherein prior to the first communication device establishing a PDU session for the terminal, the method further comprises:

the first communication device receives a fourth request from the terminal, wherein the fourth request is used for establishing a PDU session; wherein the PDU session is carried by a first operator and a second operator together, and the terminal is attributed to the first operator.

10. The method of claim 9, wherein the fourth request includes at least one of the following information:

a second DNN and/or a second S-NSSAI;

A first DNN and/or a first S-NSSAI, wherein 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

11. The method of claim 10, further comprising at least one of:

the first communication device determines a second DNAI according to 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, and determines the second DNAI according to the first information and the second DNN and/or the second S-NSSAI.

12. A server access method, comprising:

the second communication device receiving a third request from the first communication device;

the second communication device performs user plane selection based on the third request;

and the user plane supports access to an edge application server of a second operator, the first communication equipment belongs to the first operator, and the second communication equipment belongs to the second operator.

13. The method of claim 12, wherein the step of determining the position of the probe is performed,

the third request includes a second DNAI; or,

the third request comprises a first DNAI, which belongs to the first operator; wherein the method further comprises: the second communication device determining a second DNAI based on the first DNAI, the second DNAI belonging to the second operator; or,

the third request comprises third information for the second communication device to determine a second DNAI, the second DNAI belonging to the second operator, the third information comprising at least one of: FQDN, server IP address; or,

the third request includes core network tunnel information under the first operator.

14. The method according to claim 12, wherein the method further comprises:

the second communication device receives a second request from the first communication device, wherein the second request carries fourth information and is used for indicating the second communication device to establish the PDU session or establish a QoS stream in the PDU session according to the fourth information;

the second communication device sends a second response to the first communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

15. The method of claim 14, wherein the fourth information comprises at least one of:

QoS rules;

QoS parameters;

QoS configuration;

tunnel information; the tunnel information is core network tunnel information of the first operator side.

16. An information transmission method, comprising:

the third communication device sends first information;

wherein the first information is associated with a PLMN identity, the first information being for providing at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI;

the third communication device belongs to a first operator and the second communication device belongs to a second operator, and the second information and/or the second DNAI is associated with or provided by the second operator.

17. The method of claim 16, wherein the second information is provided based on a PLMN identifier, comprising at least one of:

FQDN or range of FQDNs;

IP address or IP address field;

a second data network name DNN;

a second S-NSSAI;

mapping relation between the second DNN and the first DNN;

mapping relation between the second S-NSSAI and the first S-NSSAI;

a second DNAI;

a first DNAI, the first DNAI belonging to the first operator;

18. An information transmission method, comprising:

the fourth communication equipment receives a first request, wherein the first request is used for requesting to acquire first information;

the fourth communication device sends the first information;

19. The method of claim 18, wherein the second information is provided based on a PLMN identifier, comprising at least one of:

FQDN or range of FQDNs;

IP address or IP address field;

a second data network name DNN;

a second S-NSSAI;

mapping relation between the second DNN and the first DNN;

mapping relation between the second S-NSSAI and the first S-NSSAI;

a first DNAI, the first DNAI belonging to the first operator;

a second DNAI;

20. A method for session establishment, comprising:

the terminal performs a first operation including at least one of: triggering a fourth request based on a terminal routing policy URSP rule; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session;

21. The method according to claim 20, wherein in case the terminal triggers or sends a fourth request based on a urs rule, the fourth request comprises at least one of the following information:

a second DNN and/or a second S-NSSAI;

the system comprises a first DNN and/or a first S-NSSAI, wherein a mapping relation exists between the first DNN and a second DNN, and a mapping relation exists between the first S-NSSAI and a second S-NSSAI;

22. The method of claim 20, wherein the step of determining the position of the probe is performed,

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

The PDU session parameters of the PDU session include at least one of: a second DNN, a second S-nsai, the second DNN and the second S-nsai belonging to the second operator.

23. The method of claim 20, wherein the urs rules include location information indicating where the urs rules are effective.

24. An information acquisition apparatus applied to a first communication device, comprising:

the sending module is used for sending a first request, wherein the first request is used for requesting to acquire first information;

a receiving module, configured to receive the first information, where the first information is associated with a PLMN identifier, and the first information is used to provide at least one of: mapping relation between the second information and the second DNAI; mapping relation between the second information and index information of the second communication equipment; a second DNAI;

25. The apparatus of claim 24, wherein the receiving module is further configured to:

mapping the received third information into the second DNAI corresponding to the third information according to the first information, or determining index information of the second communication equipment corresponding to the third information according to the received third information;

wherein the third information is included in the second information.

26. The apparatus of claim 24, further comprising a processing module configured to establish a PDU session for a terminal based on the first information, the PDU session being carried in common by the first operator and the second operator, the terminal being affiliated with the first operator.

27. A server access device for use with a second communication device, comprising:

a receiving module for receiving a third request from the first communication device;

the processing module is used for selecting a user plane based on the third request;

28. The apparatus of claim 27, wherein the device comprises a plurality of sensors,

the third request includes a second DNAI; or,

the third request includes core network tunnel information of the user plane under the first operator.

29. The apparatus of claim 27, wherein the device comprises a plurality of sensors,

the receiving module is further configured to receive a second request from the first communication device, where the second request carries fourth information, and the second request is used 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 apparatus further includes a sending module configured to send a second response to the first communication device, where the second response is used to indicate that the PDU session or QoS flow is established successfully, or that the second operator cannot guarantee at least one piece of fourth information in the process of establishing the PDU session or QoS flow.

30. An information transmitting apparatus applied to a third communication device, comprising:

the sending module is used for sending the first information;

31. An information transmitting apparatus applied to a fourth communication device, comprising:

the receiving module is used for receiving a first request, wherein the first request is used for requesting to acquire first information;

the sending module is used for sending the first information;

32. A session establishment apparatus applied to a terminal, comprising:

a communication module for performing a first operation, the first operation comprising at least one of: triggering a fourth request based on the urs rules; determining a PDU session matching the application traffic based on the URSP rules; transmitting a fourth request, wherein the fourth request is used for establishing a PDU session;

33. The apparatus of claim 32, wherein in the event that a fourth request is triggered or sent based on a urs rule, the fourth request comprises at least one of the following information:

a second DNN and/or a second S-NSSAI;

34. The apparatus of claim 32, wherein the urs rules comprise location information indicating where the urs rules are effective.

35. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method of any of claims 20 to 23.

36. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of any one of claims 1 to 19.

37. A readable storage medium, characterized in that it stores thereon a program or instructions, which when executed by a processor, implement the steps of the method according to any of claims 1 to 23.