CN116801260A

CN116801260A - Multi-mode service realization method and device and communication equipment

Info

Publication number: CN116801260A
Application number: CN202210254374.0A
Authority: CN
Inventors: 吕华章; 柯小婉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2023-09-22
Also published as: WO2023174221A1

Abstract

The application discloses a method, a device and a communication device for realizing multi-mode service, wherein the method for realizing the multi-mode service comprises the following steps: the method comprises the steps that a first communication device sends a migration request to a second communication device, wherein the migration request is used for requesting the second communication device to provide coordinated core network control plane services for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used for requesting the first communication device to provide coordinated core network control plane services for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first communication equipment receives a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or failure; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

Description

Multi-mode service realization method and device and communication equipment

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a method and a device for realizing multi-mode service and communication equipment.

Background

Multimodal data (multi-modal data) is data input from different devices or sensors, or output to different destinations (e.g., one or more terminals) as required for the same task or application. For example, in Extended Reality (XR), there are such scenarios: when the user plays the XR game, the user can operate the handle while wearing the helmet, and the server side can send signals of the virtual environment of the XR game to one terminal (the helmet) and can send signals of touch perception to the other terminal (the handle), and the helmet and the handle serve the user playing the XR game. Therefore, this is a scenario where one output source sends two signals to two terminals, which is multi-modal.

As can be seen from the above description, the transmission of the multi-mode service flow involves at least two User equipments (UEs, also referred to as terminals), and the policy and charging control (Policy and Charging Control, PCC) rules corresponding to the multi-mode service flows carried by at least two UEs respectively need to be mutually coordinated so as to be beneficial to the implementation of the multi-mode service, because there is a certain association relationship between the multi-mode service flows, where most important is the synchronicity, for example, two multi-mode service flows need to reach two terminals with almost the same time delay, and the requirement of the time delay of two multi-mode service flows is specified in the PCC rules. Whereas if it can be ensured that PCC rules corresponding to a multi-modal traffic flow carried by at least two terminals are formulated in one PCF, it is beneficial for the multi-modal traffic flow because the formulation of rules to each other is mutually referenced and dynamically adjustable. In practical situations, however, due to differences in geographic locations or load balancing, the 5G core network (5 GC) network elements (e.g. policy control function (Policy Control Function, PCF) or session management function (Session Management Function, SMF), etc.) that serve at least two UEs carrying multi-mode traffic flows respectively are quite likely to be different network elements, and if a coordinated PCC rule or adjustment is to be performed between the different network elements, there is a relatively great difficulty, so that a coordinated core network service cannot be provided.

Disclosure of Invention

The embodiment of the application provides a method, a device and communication equipment for realizing multi-mode service, which can solve the problem of how to provide coordinated core network service for a group of terminals bearing different multi-mode service flows belonging to the same multi-mode service flow group.

In a first aspect, a method for implementing a multi-mode service is provided, including:

the method comprises the steps that a first communication device sends a migration request to a second communication device, wherein the migration request is used for requesting the second communication device to provide coordinated core network control plane services for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used for requesting the first communication device to provide coordinated core network control plane services for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device;

the first communication equipment receives a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or failure;

the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

In a second aspect, a method for implementing a multi-mode service is provided, including:

the second communication equipment receives a migration request sent by the first communication equipment, wherein the migration request is used for requesting the second communication equipment to provide coordinated core network control plane services for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, or the migration request is used for requesting the first communication equipment to provide coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment;

the second communication device sends a migration response to the first communication device, wherein the migration response is used for indicating that migration is successful or fails;

In a third aspect, a method for implementing a multi-mode service is provided, including:

the third communication equipment sends a migration trigger request to the first communication equipment, and the migration trigger request is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides a coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

In a fourth aspect, a method for implementing a multi-mode service is provided, including:

the SMF sends PDU session modification instructions to a first terminal, the SMF can provide coordinated core network control plane services for the first terminal and a second terminal, the first terminal and the second terminal respectively transmit multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group;

and after receiving the PDU session establishment request of the first terminal, the SMF selects a second UPF to bear the multi-mode service flow of the first terminal, and the second UPF bears the multi-mode service flow of the second terminal.

In a fifth aspect, there is provided a multi-mode service implementation apparatus, including:

a first sending module, configured to send a migration request to a second communication device, where the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to a first communication device and a second terminal corresponding to the second communication device, or the migration request is used for the first communication device to request the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device to provide a coordinated core network control plane service;

The first receiving module is used for receiving a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or failure;

In a sixth aspect, there is provided a multi-mode service implementation apparatus, including:

the first receiving module is used for receiving a migration request sent by the first communication equipment, wherein the migration request is used for requesting the second communication equipment to provide coordinated core network control plane services for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, or the migration request is used for requesting the first communication equipment to provide coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment;

the first sending module is used for sending a migration response to the first communication equipment, wherein the migration response is used for indicating that migration is successful or fails;

In a seventh aspect, there is provided a multi-mode service implementation apparatus, including:

a sending module, configured to send a migration trigger request to a first communication device, and instruct the first communication device to migrate a corresponding first terminal to a second communication device, where the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

An eighth aspect provides a multi-mode service implementation apparatus, including:

the first sending module is used for sending a PDU session modification instruction to a first terminal, the multi-mode service implementation device can provide a coordinated core network control plane service for the first terminal and a second terminal, the first terminal and the second terminal respectively transmit multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group;

And the first selection module is used for selecting a second UPF to bear the multi-mode service flow of the first terminal after receiving the PDU session establishment request of the first terminal, wherein the second UPF bears the multi-mode service flow of the second terminal.

In a ninth aspect, there is provided a communication 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 as set out in the first, second, third or fourth aspects.

In a tenth aspect, a communication device is provided, including a processor and a communication interface, where the communication interface is configured to send a migration request to a second communication device, where the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used to request the first communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; receiving a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or fails; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

An eleventh aspect provides a communication device, including a processor and a communication interface, where the communication interface is configured to receive a migration request sent by a first communication device, where the migration request is used to request the second communication device to provide coordinated core network control plane services for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used to request the first communication device to provide coordinated core network control plane services for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; transmitting a migration response to the first communication device, wherein the migration response is used for indicating that migration is successful or fails; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

A twelfth aspect provides a communication device, including a processor and a communication interface, where the communication interface is configured to send a migration trigger request to a first communication device, and instruct the first communication device to migrate a corresponding first terminal to a second communication device, where the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

A thirteenth aspect provides a communication device, including a processor and a communication interface, where the communication interface is configured to send a PDU session modification instruction to a first terminal, where the communication device is capable of providing coordinated core network control plane services for the first terminal and a second terminal, where the first terminal and the second terminal respectively transmit multi-mode traffic flows, and where the multi-mode traffic flows respectively transmitted by the first terminal and the second terminal belong to a same multi-mode traffic flow group; the processor is configured to select, after receiving the PDU session establishment request of the first terminal, a second UPF to carry the multi-mode service flow of the first terminal, where the second UPF carries the multi-mode service flow of the second terminal.

In a fourteenth aspect, there is provided a communication system comprising: a first communication device and a second communication device, where the first communication device is configured to perform the steps of the method for implementing a multi-mode service according to the first aspect, and the network-side device is configured to perform the steps of the method for implementing a multi-mode service according to the second aspect.

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 of the first, second, third or fourth 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 method according to the first, second, third or fourth aspects.

In a seventeenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to perform the steps of the method according to the first, second, third or fourth aspects.

In the embodiment of the application, the same set of service communication equipment can be selected for a group of terminals bearing different multimode service flows belonging to the same multimode service flow group so as to ensure various user experience and communication indexes of the multimode service flows.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is an exemplary diagram of a multi-modal service;

FIG. 3 is an exemplary diagram two of a multi-modal service;

FIG. 4 is a schematic flow chart of a method for implementing multi-mode service according to an embodiment of the present application;

FIG. 5 is a second flow chart of a method for implementing multi-mode services according to an embodiment of the present application;

FIG. 6 is a third flow chart of a method for implementing a multi-mode service according to an embodiment of the present application;

FIG. 7 is a flowchart of a method for implementing a multi-mode service according to an embodiment of the present application;

fig. 8 is a flow chart of a method for implementing multi-mode service according to embodiment 1.0 of the present application;

fig. 9 is a flow chart of a method for implementing multi-mode service according to embodiment 1.1 of the present application;

fig. 10 is a flow chart of a method for implementing multi-mode service according to embodiment 1.2 of the present application;

fig. 11 is a flow chart of a multi-mode service implementation method according to a second embodiment of the present application;

fig. 12 is a flow chart of a multi-mode service implementation method according to the third embodiment of the present application;

fig. 13 is a flow chart of a multi-mode service implementation method according to a fourth embodiment of the present application;

fig. 14 is a schematic structural diagram of a multi-mode service implementation device according to an embodiment of the present application;

FIG. 15 is a second schematic structural diagram of a multi-mode service implementation device according to an embodiment of the present application;

FIG. 16 is a third schematic structural diagram of a multi-mode service implementation device according to an embodiment of the present application;

FIG. 17 is a schematic diagram of a multi-mode service implementation device according to an embodiment of the present application;

Fig. 18 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 19 is a second schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions of 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, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements 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 "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, 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 should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/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 Ac)Process, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access, FDMA), and other systems. The terms "system" and "network" in embodiments of the 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 an embodiment of the present application is 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.. It should be noted 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 a core network device, wherein the access network device 12 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. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which 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 and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular 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 a base station in the NR system is described as an 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. It should be noted that, 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 meaning of multimodal data is further described below.

Referring to fig. 2 and 3, several cases shown in fig. 2 and 3 belong to multiple modes:

case 1: multi-terminal single server side (Application server): the server side sends two paths of signals to two terminals (UE 1 and UE 2), and the two terminals simultaneously complete a task or service.

Case 2: and a multi-terminal multi-server terminal. The server side has a plurality of servers, and different data are respectively sent to different terminals, so that the same service is completed.

In general, the largest features of multi-modal data include:

1) The same service consists of a plurality of data streams and is respectively sent to a plurality of terminals;

2) To ensure the effect of the traffic, the relative delay of the streams between the data streams is usually kept low to ensure good synchronicity. For example, to ensure the experience of an XR game, the video signal (e.g., the game environment) and the audio signal must be guaranteed to be within a certain time delay (e.g., the video data and the audio data must not be delayed above an upper bound with respect to each other). If the two paths of data are not well synchronized, the service experience is poor, the game scene in the helmet is switched, but the audio signal is seriously delayed, so that the game effect is poor.

Such as one example given in table 1: the video or audio delays given in table 1 are relative to the other data stream. For example, the service effect can be ensured when the time delay of the audio frequency relative to the video frequency is not more than 50 ms; whereas the service experience and effect can be guaranteed when the audio is not delayed more than 25ms with respect to the haptic signal.

Table 1 typical synchronization threshold for immersive multi-modal Virtual Reality (VR) applications

Thus, as can be seen from the above description, the formulation and specific implementation of PCC rules for multi-modal traffic flows are somewhat constrained and referenced with respect to each other. For example, there is a certain correlation between the characteristics of the multi-mode traffic flow carried by UE 1 and the multi-mode traffic flow carried by UE 2.

From a design perspective, it would be of benefit to the multi-modal service if it could be guaranteed that the 5GC network element (PCF) that sets Policy and Charging Control (PCC) rules for the multi-modal traffic flows of the two UEs, and the 5GC network element (SMF) that specifically enforces the multi-modal traffic flow PCC rules, are the same set of network elements. For example, the same PCF is used to formulate the PCC rule, and then the PCF may refer to the PCC rules corresponding to the two multi-mode service flows to adjust parameters (such as delay) of a specific QoS flow in the PCC rule.

The method, the device and the communication equipment for implementing the multi-mode service 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.

Referring to fig. 4, an embodiment of the present application provides a method for implementing a multi-mode service, including:

step 41: the method comprises the steps that a first communication device sends a migration request to a second communication device, wherein the migration request is used for requesting the second communication device to provide coordinated core network control plane services for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used for requesting the first communication device to provide coordinated core network control plane services for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

The terminal transmits the multi-mode service flow, and can also be described as PDU session bearing multi-mode service flow on the terminal.

That is, the first communication device may request migration of the first terminal served by itself to the second communication device, and the first communication device may also request migration of the second terminal served by the second communication device to the first communication device.

Step 42: the first communication equipment receives a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or failure.

In the embodiment of the present application, the first communication device and the second communication device that provide the core network control plane service for the terminal are core network elements, specifically, PCF that is used to formulate PCC rules, SMF that is used to execute PCC rules, or other core network elements, for example, UPF user plane functions that carry multi-mode traffic flow transmission. The following description will take PCF or SMF as an example of a first communication device and a second communication device that provide a core network control plane service for a terminal, respectively.

In some embodiments, optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service refers to: and using the same PCF to make PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal.

Optionally, in one embodiment, the first communication device uses a first PCF to generate a PCC rule, the second communication device uses a second PCF to generate a PCC rule, the first PCF triggers the migration request, and sends information of the multi-mode service flow related to the first communication device to the second PCF, so that the second PCF is subsequently responsible for formulation of the PCC rule of the multi-mode service flow carried by the first communication device and the second communication device respectively. That is, the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, where the migration request carries at least one of the following information:

session management policy association identification (SM Policy Association ID);

-a subscription permanent identity (Subscription Permanent Identifier, SUPI) of the first terminal or an Internet Protocol (IP) address of the first terminal;

a Protocol Data Unit (PDU) session ID (PDU Session ID) of the first terminal, wherein the PDU session corresponding to the PDU session ID carries a multi-mode service flow;

data network name (Data Network Name, DNN);

Single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI);

a radio access technology (Radio Access Technology, RAT) type of the first terminal;

an SMF ID (SMF instance ID) corresponding to the first terminal;

an IP address (SMF IP address) of the SMF corresponding to the first terminal;

a multi-modal traffic Flow ID (multiple modal ID or multiple modal Flow ID) for identifying a multi-modal traffic Flow, which may also be referred to as a QoS Flow, which may also be represented by a QoS Flow ID (QFI);

the multi-modal traffic group ID (multiple modal group ID), which may also be referred to as a multi-modal traffic group ID;

a multi-modal service provider ID (multiple modal provider ID);

PCC rules corresponding to a multi-modal traffic flow.

Wherein the PCC rule comprises at least one of:

5G QoS identification (5G QoS Identifier,5QI);

QoS notification control (QoS Notification Control, QNC);

uplink maximum bit rate (UL-maximum bit rate);

downlink maximum bit rate (DL-maximum bit rate);

uplink guaranteed bit rate (UL-guaranteed bitrate);

downlink guaranteed bit rate (DL-guaranteed bitrate);

Allocation and retention priority (Allocation and Retention Priority, ARP): the method comprises the steps of carrying out a first treatment on the surface of the

Priority Level;

average Window (Averaging Window);

maximum data burst amount (Maximum Data Burst Volume);

packet delay budget (Packet delay budget, PDB).

By sending the information, the second communication device can acquire the first terminal and/or related information of the multi-mode service flow transmitted by the first terminal, so as to provide core plane control service for the first terminal.

Or in some embodiments, optionally, the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, where the migration request carries at least one of the following information:

session management policy association ID;

a subscription permanent identification of the second terminal or an IP address of the second terminal;

the PDU session ID of the second terminal, wherein the PDU session corresponding to the PDU session ID carries a multi-mode service flow;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

A multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

In some embodiments of the present application, the first communication device may acquire the second terminal and/or information related to the multi-mode service flow transmitted by the second terminal, and by sending the information to the second communication device, the second communication device may be enabled to learn that the second terminal needs to be migrated to the first communication device.

In this embodiment of the present application, optionally, the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and after the first communication device receives a migration response sent by the second communication device, the method further includes: if the migration response indicates that the migration is successful, the first communication device sends a session management context update request to an SMF corresponding to the first terminal, wherein the session management context update request is used for updating an IP address or an identifier of a PCF corresponding to the first terminal; the session management context update request carries at least one of the following information:

Session management context ID;

an ID or IP address of the second communication device.

That is, the session management context update request is used to request to modify the IP address or identifier of the PCF corresponding to the first terminal in the PDU session context to the IP address or identifier of the second communication device, so that the SMF corresponding to the first terminal can learn the new PCF corresponding to the first terminal.

Or alternatively, the process may be performed,

the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and after the first communication device receives a migration response sent by the second communication device, the first communication device further includes:

if the migration response indicates that the migration is successful, the first communication device sends a session management context update request to an SMF corresponding to the second terminal, wherein the session management context update request is used for updating an IP address or an identifier of a PCF corresponding to the second terminal; the session management context update request carries at least one of the following information:

session management context ID;

an ID or IP address of the first communication device.

That is, the session management context update request is used to request to modify the IP address or identifier of the PCF corresponding to the second terminal in the PDU session context to the IP address or identifier of the first communication device, so that the SMF corresponding to the second terminal can learn the new PCF corresponding to the second terminal.

Optionally, the first communication device and the second communication device are PCFs, and after receiving the migration response sent by the second communication device, the first communication device further includes:

if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, the first communication device sends a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the first terminal and the first communication device, and bind the first terminal and the second communication device;

or alternatively

If the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, the first communication device sends a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the second terminal and the second communication device, and bind the second terminal and the first communication device.

Thereby, the BSF can update the binding relation between the terminal and the PCF.

In this embodiment of the present application, optionally, before the first communication device sends the migration request to the second communication device, the method further includes: the first communication equipment receives a migration trigger request sent by the third communication equipment and is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device.

By triggering the migration request, the first communication device may be triggered to migrate the first terminal to the second communication device, or migrate the second terminal to the first communication device, which is different from the migration request initiated by the first communication device itself.

In this embodiment of the present application, optionally, if the migration trigger request is used to instruct the first communication device to migrate the corresponding first terminal to the second communication device, the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, where the migration trigger request carries at least one of the following information:

Session management policy association ID;

a subscription permanent identification of the first terminal or an IP address of the first terminal;

the PDU session ID of the first terminal, wherein the PDU session corresponding to the PDU session ID carries a multi-mode service flow;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

control plane information of the multi-mode service flow of the first terminal or the second terminal;

quality of service Flow identification (QFI);

by carrying the information, the first communication equipment can acquire the related information of the first terminal needing to be migrated.

Or alternatively, the process may be performed,

if the migration triggering request is used for indicating the first communication equipment to migrate the second terminal corresponding to the second communication equipment to the first communication equipment, the first communication equipment provides a coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; the migration triggering request carries at least one of the following information:

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

by carrying the information, the first communication equipment can acquire the related information of the second terminal which needs to be migrated.

In this embodiment of the present application, optionally, after the first communication device receives the migration trigger request sent by the third communication device, the method further includes: the first communication device verifies whether a condition for migration is present, the condition comprising: the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group; only when the first terminal and the second terminal carry multi-mode traffic flows belonging to the same multi-mode traffic flow group, there is a possibility of controlling the first communication device and the second communication device using the same set of PCF and/or SMF.

When at least one of the following information of the multi-mode service flows transmitted by the first terminal and the second terminal is the same, the information belongs to the same multi-mode service flow group:

the identification of the multi-mode service flow group;

multimodal service provider identification.

The first communication device verifies whether the condition of migration is met, and only when the first terminal and the second terminal bear multimode service flows belonging to the same multimode service flow group, the first communication device and the second communication device can be controlled by using the same PCF and/or SMF, so that incorrect migration is avoided.

In an embodiment of the present application, optionally, the third communication device includes at least one of the following communication devices:

SMF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

that is, the migration request is triggered by the third communication device, as opposed to the first communication device (e.g., PCF) directly triggering the migration request.

In some embodiments, optionally, the first communication device and the second communication device are SMFs, and the coordinated core network control plane service refers to: and executing PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal by using the same SMF.

Optionally, the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, where the migration request carries at least one of the following information:

A Session Management (SM) context corresponding to the first terminal; the SM (session management) context, also called PDU session context, mainly includes some parameters or information corresponding to the PDU session, for example, PDU session ID, UE location information, etc.

And N4 context corresponding to the first terminal. The N4 context is mainly control information generated by the SMF for the UPF according to PCC rules, and is used to indicate the operation of the UPF. For example, packet Data Rule (PDR) is used to identify packets arriving at the UPF.

The migration request is used for the first communication equipment to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, and the migration request carries at least one of the following information:

a Session Management (SM) context corresponding to the second terminal; the SM (session management) context, also called PDU session context, mainly includes some parameters or information corresponding to the PDU session, for example, PDU session ID, UE location information, etc.

And N4 context corresponding to the second terminal. The N4 context is mainly control information generated by the SMF for the UPF according to PCC rules, and is used to indicate the operation of the UPF. For example, packet Data Rule (PDR) is used to identify packets arriving at the UPF.

Optionally, after the first communication device receives the migration response sent by the second communication device, the method further includes: if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the first communication device is not used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal, and the second communication device is used for providing a control plane service for the first terminal; or if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the first communication device is used as a control plane network element corresponding to the second terminal to provide a control plane service for the second terminal.

Optionally, after the first communication device receives the migration response sent by the second communication device, the method further includes:

Or alternatively

So that the BSF can update the binding relationship of the terminal and the communication device.

Optionally, if the migration request is used to request the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, after the first communication device receives the migration response sent by the second communication device, the method further includes: the first communication device transmits a second notification to at least one of the following communication devices, the second notification being used to instruct the SMF corresponding to the first terminal to change:

AMF；

PCF；

UPF；

or alternatively

If the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device,

The first communication device sends a second notification to at least one of the following communication devices, where the second notification is used to instruct the SMF corresponding to the second terminal to change:

AMF；

PCF；

UPF。

so that the relevant core network equipment can know that the SMF serving the terminal is changed.

Optionally, before the first communication device sends the migration request to the second communication device, the method further includes: the first communication equipment receives a migration trigger request sent by the third communication equipment and is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device.

Optionally, if the migration trigger request is used to instruct the first communication device to migrate the corresponding first terminal to the second communication device, the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, where the migration trigger request carries at least one of the following information:

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

quality of service flow identification (QFI);

Or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

Optionally, the third communication device includes at least one of the following communication devices:

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

in the above embodiments, for the method for implementing a multi-mode service executed by the sending end of the migration request, the method for implementing a multi-mode service executed by the receiving end of the migration request is described below.

Referring to fig. 5, an embodiment of the present application provides a method for implementing a multi-mode service, including:

step 51: the second communication equipment receives a migration request sent by the first communication equipment, wherein the migration request is used for requesting the second communication equipment to provide coordinated core network control plane services for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, or the migration request is used for requesting the first communication equipment to provide coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

Step 52: the second communication device sends a migration response to the first communication device, wherein the migration response is used for indicating that migration is successful or failure.

Optionally, in one embodiment, the first communication device uses a first PCF to generate a PCC rule, the second communication device uses a second PCF to generate a PCC rule, the first PCF triggers the migration request, and sends information of the multi-mode service flow related to the first communication device to the second PCF, so that the second PCF is subsequently responsible for formulation of the PCC rule of the multi-mode service flow carried by the first communication device and the second communication device respectively.

session management policy association identification, ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Wherein the PCC rule comprises at least one of:

5G QoS identification (5G QoS Identifier,5QI);

QoS notification control (QoS Notification Control, QNC);

uplink maximum bit rate (UL-maximum bit rate);

downlink maximum bit rate (DL-maximum bit rate);

uplink guaranteed bit rate (UL-guaranteed bitrate);

downlink guaranteed bit rate (DL-guaranteed bitrate);

Priority Level;

average Window (Averaging Window);

maximum data burst amount (Maximum Data Burst Volume);

packet delay budget (Packet delay budget, PDB).

Optionally, the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and after the second communication device sends a migration response to the first communication device, the method further includes:

If the migration response indicates that the migration is successful, the second communication device sends a session management context update request to the SMF bound with the first terminal, wherein the session management context update request is used for updating the IP address or the identifier of the PCF corresponding to the first terminal; the session management context update request carries the following information:

session management context ID;

an ID or IP address of the second communication device.

That is, the session management context update request is used to modify the IP address or identifier of the PCF corresponding to the first terminal in the PDU session context to the IP address or identifier of the second communication device.

Or alternatively, the process may be performed,

the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and after the second communication device sends a migration response to the first communication device, the method further comprises the steps of:

if the migration response indicates that the migration is successful, the second communication device sends a session management context update request to the SMF bound with the second terminal, wherein the session management context update request is used for updating the IP address or the identifier of the PCF corresponding to the first terminal; the session management context update request carries the following information:

Session management context ID;

an ID or IP address of the first communication device.

Optionally, after the second communication device sends the migration response to the first communication device, the method further includes:

if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the second communication device is used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal;

or alternatively, the process may be performed,

if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the second communication device is not used as a control plane network element corresponding to the second terminal to provide a control plane service for the second terminal.

Optionally, the first communication device and the second communication device are PCFs, and after the second communication device sends the migration response to the first communication device, the method further includes:

If the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, the second communication device sends a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the first terminal and the first communication device, and bind the first terminal and the second communication device.

Or alternatively

If the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, the second communication device sends a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the second terminal and the second communication device, and bind the second terminal and the first communication device.

a Session Management (SM) context corresponding to the first terminal; the SM (session management) context, also called PDU session context, mainly includes some parameters or information corresponding to the PDU session, for example, PDU session ID, UE location information, etc. The N4 context is mainly control information generated by the SMF for the UPF according to PCC rules, and is used to indicate the operation of the UPF. For example, packet Data Rule (PDR) is used to identify packets arriving at the UPF.

And N4 context corresponding to the first terminal.

Or the migration request is used for the first communication equipment to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, and the migration request carries at least one of the following information:

a Session Management (SM) context corresponding to the second terminal; the SM (session management) context, also called PDU session context, mainly includes some parameters or information corresponding to the PDU session, for example, PDU session ID, UE location information, etc. The N4 context is mainly control information generated by the SMF for the UPF according to PCC rules, and is used to indicate the operation of the UPF. For example, packet Data Rule (PDR) is used to identify packets arriving at the UPF.

And N4 context corresponding to the second terminal.

if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the second communication device is used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal, and the first communication device no longer provides a control plane service for the first terminal;

or alternatively, the process may be performed,

In the embodiment of the present application, the first communication device initiates the migration request by self-triggering or by triggering of other devices, and the implementation method of triggering by other devices is described below.

Referring to fig. 6, an embodiment of the present application provides a method for implementing a multi-mode service, including:

step 61: the third communication equipment sends a migration trigger request to the first communication equipment, and the migration trigger request is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides a coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI；

or alternatively, the process may be performed,

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

in an embodiment, optionally, the first communication device and the second communication device are PCFs, and the third communication device includes at least one of the following communication devices:

SMF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

in an embodiment, optionally, the third communication device is an SMF; the third communication device further includes, after sending the migration trigger request to the first communication device: if the migration trigger request is used for indicating the first communication device to migrate the corresponding first terminal to the second communication device, the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the third communication device associates the session management context ID corresponding to the first terminal with the ID of the second communication device. Or if the migration trigger request is used for indicating the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the third communication device associates the session management context ID corresponding to the second terminal with the ID of the first communication device.

In an embodiment, optionally, the first communication device and the second communication device are SMFs, and the third communication device includes at least one of the following communication devices:

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

in the above embodiment, the migration of the network element in the control plane makes it possible to use one control plane network element to provide coordinated core network control plane services for different terminals carrying multi-mode traffic flows. In the user plane, the migration of the network element of the user plane may also be performed, so that one user plane network element may be used to provide coordinated core network user plane services for different terminals carrying multi-mode traffic flows, which will be described in detail below.

Referring to fig. 7, an embodiment of the present application provides a method for implementing a multi-mode service, including:

step 71: the SMF sends PDU session modification instructions to a first terminal, the SMF can provide coordinated core network control plane services for the first terminal and a second terminal, the first terminal and the second terminal respectively transmit multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group; the SMF sends a PDU session modification instruction to the first terminal for the purpose of: and the first terminal is enabled to replace the UPF bearing the multi-mode service flow with the UPF bearing the multi-mode service flow of the second terminal, namely, the purpose of simultaneously bearing two multi-mode service flows by using the same UPF is achieved (the two multi-mode service flows belong to the same multi-mode service flow group).

Step 72: and after receiving the PDU session establishment request of the first terminal, the SMF selects a second UPF to bear the multi-mode service flow of the first terminal, and the second UPF bears the multi-mode service flow of the second terminal.

In the embodiment of the application, the SMF triggers and executes the switching of the UPF, so that the same UPF is used for providing the coordinated core network user plane service for different terminals bearing the multi-mode service flow. I.e. using the same UPF, both the multi-modal traffic flow of terminal 1 and the multi-modal traffic flow of terminal 2 are carried.

In the embodiment of the present application, optionally, the SMF sending a PDU session modifying instruction to the first terminal includes: and the SMF sends the PDU session modification instruction to an AMF, and the AMF forwards the PDU session modification instruction to the first terminal.

In an embodiment of the present application, optionally, the method further includes: after receiving the PDU session establishment request of the first terminal, the SMF selects a second PCF to formulate PCC rules for the first terminal, and the second PCF can cooperatively provide a service policy for the first terminal and the second terminal.

The method for the SMF to specifically select the second PCF to formulate the PCC rule for the first terminal may refer to the method for the third communication device to trigger the migration of the first communication device in the foregoing embodiment, and will not be repeated here.

The multi-mode service implementation method of the present application is illustrated below in conjunction with a specific application scenario.

In the first embodiment of the application: multi-modal PCF migration

Inventive example 1.0:

referring to fig. 8, the method for implementing the multi-mode service according to the embodiment of the present application includes:

step 1: the application function (Application Function, AF) decides to set up a multi-modal service to a plurality of UEs, AF representing the server side (Application Server, AS).

Step 2: the AF request establishes a plurality of QoS flows (i.e., multi-modal traffic flows) for a plurality of UEs, the plurality of QoS flows forming a multi-modal traffic flow group. AF triggering: nnef afsessionwithqos_create/Update request.

The nnef_afsessionwithqos_create/Update request carries the following: multi-modal traffic group information. The multi-mode service flow group refers to a service end hopes to establish QoS flows to a plurality of UE, and the QoS flows form a multi-mode service flow group.

The multi-modal traffic group information includes at least one of:

the multi-mode service flow group identification is unique to the server side.

IP addresses of a plurality of UEs, corresponding Flow description information(s), qoS Reference information (QoS Reference), qoS parameters (QoS parameters).

Such as:

AF (server representing vacation), requesting to establish a multi-mode traffic flow to UE1 and UE2, AF triggers: the Nnef_AFsessionWithQoS_Create/Update request message includes:

a multi-modal traffic flow identification (multiple modal ID);

a multimodal service provider identity (multiple modal provider ID);

information of QoS flows of UE1 (e.g., including UE 1IP address (UE 1IP address), flow description information (s)), qoS Reference information (QoS Reference), qoS parameter information (QoS parameters));

information of QoS flows of UE2 (e.g., including UE 2IP address (UE 2IP address), flow description information (s)), qoS Reference information (QoS Reference), qoS parameter information (QoS parameters)).

Thus, the network opening function (Network Exposure Function, NEF) knows that the AF has requested to set up a multi-mode traffic group and has requested to set up two QoS flows to UE1 and UE2, respectively.

Step 3: the NEF verifies whether the AF request is legitimate.

Step 4: the NEF determines the PCF served by each UE based on the received AF request. Since the AF request is a multi-mode service flow group, it includes at least more than 2 UE IP addresses. Therefore, the NEF triggers a query request to a binding support function (Binding Support Function, BSF) for requesting to obtain PCFs corresponding to all UEs in the multi-mode traffic group.

For example, the NEF triggers signaling to BSF, signaling: nbsf_ Management discovery, said nbsf_ Management discovery comprising: UE 1IP address (UE 1IP address), UE 2IP address (UE 2IP address).

Step 5: after receiving the request of the NEF, the BSF searches for multiple PCFs for multiple UEs in the multi-mode service flow group due to the IP addresses of the multiple UEs. The BSF feeds back nbsf_management_ Discovery response to the NEF, including in nbsf_management_ Discovery response: the IP address of the PCF, the PCF identification (PCF instance ID) and/or the PCF group identification (PCF set ID). But these PCFs all correspond to specific UEs.

For example, BSF finds for UE1 and UE2, respectively:

UE1 corresponds to: PCF IP address, PCF identity (PCF instance ID), PCF group identity (PCF set ID);

UE2 corresponds to: PCF IP address, PCF identity (PCF instance ID), PCF group identity (PCF set ID).

The following steps 6 and 7 are a set of establishing or updating policy approval for UE 2; steps 8 to 9 are a set of policy approval setup or policy approval update for UE 1.

Step 6: after the NEF receives the PCF corresponding to each UE in the multi-mode traffic group, it triggers a policy approval request or policy approval update request to the PCF in order to approve the establishment of QoS flows requested by the previous AF.

For example, the NEF sends an npcf_policy_creation_create/Update request to PCF2, and the parameters included in the message include multi-mode traffic group information. The multi-mode service flow group refers to a QoS flow that the server side wants to establish to multiple UEs. The several QoS flows form a multi-modal traffic group. The multi-modal traffic group information includes at least one of:

the multi-mode service flow group identification is unique to the server side.

The IP address of UE 2 and the corresponding Flow description information(s), qoS Reference information (QoS Reference), qoS parameter information (QoS parameters).

Step 7: PCF2 replies whether the approval passed.

Steps 8 to 9 are identical to steps 6 to 7 except for policy approval establishment or policy approval update for UE 1.

After steps 6 and 7, and steps 8 and 9, the NEF may maintain an association with each PCF. That is, the NEF knows the IP address of each PCF at this time, and each PCF also knows the IP address of the NEF.

Step 10: when the QoS setup request passes or fails, the NEF sends a message to the AF.

For example, the NEF sends an nnef_afsessionwithqos_create/Update response to the AF, where the message includes: PCF IP address, PCF identity (PCF instance ID) and/or PCF group identity (PCF set ID) corresponding to each UE in the multi-mode traffic group.

Step 11: PCF1 selects SMF1 to serve UE1, PCF2 selects SMF2 to serve UE2, at which point UE1 corresponds to PCF 1+smf1 and UE2 corresponds to PCF 2+smf2.

To ensure that two UEs are served using the same set of control planes (PCF and SMF), it is assumed that PCF2 and SMF2 are both used, and thus UE1 needs to be migrated from PCF1 to PCF2, from SMF1 to SMF2.

Step 12: it is assumed that PCF1 and PCF2 know each other's information, SMF1 and SMF2 know each other's information (e.g., know respective IP address information and/or identity ID information), PCF1 knows the IP address of PCF2, and SMF1 knows the IP address of SMF2, etc. through AF, NEF, UDM, UDR and/or NRF, etc.

Inventive example 1.1: PCF triggered PCF migration

Referring to fig. 9, the method for implementing the multi-mode service according to the embodiment of the present application includes:

the following procedure follows step 12 in example 1.0.

Step 0: PCF1 has knowledge of the PCF IP address corresponding to PCF 2.

Step 1: PCF1 sends a migration request (PCF relocation request) to PCF2 for the purpose of subsequently having PCF2 take charge of formulating PCC rules (other rules may also be included) for UE 1.

The migration request includes at least one of the following:

session management policy association ID;

data Network Name (DNN);

single network slice selection assistance information (S-NSSAI);

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Step 2: PCF2 sends a migration response (PCF relocation response) indicating whether the PCF migration was successful or failed.

Step 3: PCF1 or PCF2 needs to update the binding relation to the BSF before. For example, sending nbsf_management_update to BSF, parameters in nbsf_management_update include: the PDU session binding identification (Binding Identifier for the PDU Session), new PCF 2ID or IP address. Thus, the BSF knows that the PCF to which a UE belongs has changed.

PCF2 may then replace PCF1 to generate PCC rules for the multi-mode traffic flow of UE 1.

Step 4: PCF2 sends nsmf_pduse_ UpdateSMContext Request (i.e., the session management context update request described above) to the SMF, for requesting SM context update, where nsmf_pduse_ UpdateSMContext Request includes at least one of the following:

Session management context ID (SM Context ID);

PCF ID (new PCF2 ID) or IP address.

And 4, the process of step 4 is used for updating the PDU session context corresponding to the multi-mode service flow of the first terminal and replacing the PCF ID in the context with PCF 2.

So far, all UEs carrying the same group of multi-mode service flows are served by PCF2, PCF2 generates PCC rules for the multi-mode service flows on these terminals, and at the same time, the same PCF is used, so that dynamic adjustment of PCC rules can be achieved.

Inventive example 1.2: SMF triggered PCF migration

Referring to fig. 10, the method for implementing the multi-mode service according to the embodiment of the present application includes:

the following procedure follows step 12 in example 1.0.

Step 0: the SMF decides to trigger PCF migration. At this time, the SMF has already obtained the IP address of PCF2 corresponding to another multi-mode service flow in the multi-mode flow group service.

Step 1: the SMF triggers the PCF to migrate, and sends a migration trigger request to the PCF 1, wherein the migration trigger request comprises at least one of the following:

session management policy association ID;

DNN；

S-NSSAI；

The RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

quality of service flow identification (QFI).

Step 2: PCF 1 needs to verify this request to determine if conditions for migration are present, including: the multi-mode service flows respectively borne by the UE1 and the UE2 belong to the same multi-mode service flow group. If the multi-mode service flows respectively borne by the UE1 and the UE2 do not belong to the same multi-mode service flow group, the migration request cannot pass verification.

Step 3: if the PCF 1 verifies that the conditions for migration are met, a migration request is sent to the PCF 2.

Step 4-6: see example 1.1.

Step 7: SM context update. The SMF can finish the process by itself, and PCF ID of the UE1 is changed into PCF2 ID. The SMF can complete the context update itself because it is a self-triggered migration request.

The second embodiment of the application: SMF-triggered SMF migration

In order to enable a plurality of UEs corresponding to the multi-mode service flow group to be served by the same SMF, the migration process of the SMF needs to be considered.

Referring to fig. 11, the method for implementing the multi-mode service according to the embodiment of the present application includes:

the following procedure follows step 12 in example 1.0.

Step 1: the SMF1 obtains, from a network element such as PCF or BSF, an IP address of another SMF2 that controls the multi-mode service flow set carried by the second terminal.

Step 2: SMF1 sends a migration request (SMF relocation request) to SMF2, the migration request including at least one of:

session management context corresponding to UE 1; i.e. the SM context of the multi-modal traffic flow controlled by the SMF1, this part of the context is also addressed to the new SMF. That is, SMF1 sends the context of the PDU session, which carries the multi-mode traffic flow, in UE1 to SMF 2.

N4 context for UE 1. That is, the multi-mode traffic flow of UE1 controlled by SMF1, the N4 context in the user plane function (User Plane Function, UPF) carrying the multi-mode traffic flow, is also sent to SMF 2.

Step 3: SMF2 sends a migration response (SMF relocation response) to SMF1 indicating whether the migration was successful or failed.

Step 4: if SMF migration is complete, then SMF 1 notifies at least one of the following nodes, SMF migration, and the affiliation changes to SMF 2:

AMF: notifying AMF, and changing the SMF to SMF 2 to which UE1 belongs;

PCF: notifying PCF, changing SMF to SMF 2 to UE1 or PDU session of UE 1;

UPF: the UPF is notified of all PDU sessions (session) of UE1, with controlled SMF changes to SMF 2.

Step 5: SMF 2 updates the binding relationship to BSF as in embodiment 1.1.

Step 6: SMF 2 controls UE1 instead of SMF 1.

Step 7: SMF 2 executes PCC rules corresponding to two UE in the multi-mode service flow group, so that the two UE can be used cooperatively or executed.

The third embodiment of the application: other network elements trigger PCF or SMF migration

Referring to fig. 12, the method for implementing the multi-mode service according to the embodiment of the present application includes:

step 1 to step 12: steps 1 to 12 are the same as in example 1.0.

Step 13: BSF, NEF, UDM, UDR or NRF, etc., triggers the control plane migration process.

The PCF migration is exemplified below.

Example 1: BSF, UDM, NRF, NEF or UDR, etc. trigger PCF migration.

Step 14a: BSF, NEF, UDM, UDR or NRF decides to perform PCF migration, sends a migration trigger request to PCF in order to select the same set of control plane for UE 1.

The migration trigger request includes at least one of the following:

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

quality of service flow identification (QFI).

See example 1.1 for the remaining steps.

Example 2: AF triggers PCF migration.

Since the AF is an untrusted network element, the AF first sends a migration trigger request to the NEF, which is forwarded and processed by the NEF generation.

Step 14a: the AF decides to perform PCF migration and sends a migration trigger request to the NEF in order to select the same set of control planes for UE 1.

The migration trigger request includes at least one of the following:

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

quality of service flow identification (QFI).

The rest of the procedure is the same as in example 1.

The fourth embodiment of the application: UPF migration

Referring to fig. 13, the method for implementing the multi-mode service according to the embodiment of the present application includes:

the following procedure follows step 12 in example 1.0.

Step 1: the SMF acquires the IP address of UPF 2 carrying the multi-modal traffic of UE 2, and the SMF expects the multi-modal traffic of UE 1 to be carried by UPF 2.

Step 2: the SMF determines the UPF migration.

Step 3: the SMF sends nsmf_pduse_ SMContextStatusNotify Request (i.e., the PDU session modification instruction described above) to the AMF. AMF replies to Nsmf_PDUSion_ SMContextStatusNotify Response.

Since the multi-mode traffic is sent to a server under a Data Network (DN) by UPF 2, then this step is that the SMF assumes that the target DNAI (DN Access Identifier, data Network access identity) cannot be served, and then the SMF sends the target DNAI to the AMF, which triggers an SMF reselection procedure.

This step does not result in an SMF reselection procedure if the SMF is already the only SMF of the group of multi-mode traffic flows (i.e. the multi-mode traffic flows of UE 1 and UE 2 are simultaneously controlled at this time);

if the SMF is not the only SMF of the group of multi-mode traffic flows (i.e., SMF 1 controls the multi-mode traffic flow for UE 1 and SMF 2 controls the multi-mode traffic flow for UE 2), then the AMF should select SMF 2, and the SMF selection and migration is described in example 2 above.

Step 4: the SMF sends Namf_communication_N1N2MessageTransferto the AMF, wherein the message comprises at least one of the following:

PDU Session identification (PDU Session ID);

n1 session management container (N1 SM container).

Step 5: the AMF sends PDU session modification (PDU session modification instruction) to the UE. The purpose of the modification instruction is to use a UPF2 bearer in order to replace the UPF carrying the UE's multi-mode traffic or PDU session. Thus, the same set of user plane is ensured to be used for bearing the multi-mode service flows belonging to the same multi-mode service flow group at the same time.

Step 6: the terminal acknowledges the PDU session modification request.

Step 7: and updating the context. I.e. the AMF sends a PDU session modification instruction acknowledgement (PDU Session Modification Command ACK) to the SMF.

Step 8: the UE establishes a PDU session (new PDU session) with UPF2 for bearing multi-mode service flow;

In the PDU session establishment process, the SMF selects UPF 2 for the UE to carry the multi-mode traffic, which realizes that the same UPF is used to carry the multi-mode traffic of UE1 and UE2 at the same time. In addition, the PCF corresponding to the PDU session must also be the same PCF of the same multi-mode traffic as UE1 (i.e., the same PCF as described in the above embodiment).

Step 9: the UE releases the PDU session with UPF 1.

The implementation main body of the multi-mode service implementation method provided by the embodiment of the application can be a multi-mode service implementation device. In the embodiment of the application, the embodiment of the application uses a method for implementing the multi-mode service by using the multi-mode service implementing device as an example to illustrate the multi-mode service implementing device provided by the embodiment of the application.

Referring to fig. 14, the embodiment of the present application further provides a multi-mode service implementation apparatus 140, including:

a first sending module 141, configured to send a migration request to a second communication device, where the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to a first communication device and a second terminal corresponding to the second communication device, or the migration request is used for the first communication device to request the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device to provide a coordinated core network control plane service; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

The first receiving module 142 is configured to receive a migration response sent by the second communication device, where the migration response is used to indicate that migration is successful or migration fails.

Optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service refers to: and using the same PCF to formulate policy and charging control PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal.

session management policy association identification, ID;

DNN；

S-NSSAI；

The RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Optionally, the multi-mode service implementation apparatus 140 further includes:

A second sending module, configured to, if the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, send a session management context update request to an SMF corresponding to the first terminal, where the session management context update request is used to update an IP address or an identifier of a PCF corresponding to the first terminal; the session management context update request carries at least one of the following information:

session management context ID;

an ID or IP address of the second communication device;

or alternatively, the process may be performed,

if the migration request is used for the first communication equipment to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, the migration response indicates that migration is successful, a session management context update request is sent to an SMF corresponding to the first terminal, and the session management context update request is used for updating an IP address or an identifier of a PCF corresponding to the second terminal; the session management context update request carries at least one of the following information:

Session management context ID;

an ID or IP address of the first communication device.

Optionally, the first communication device and the second communication device are SMFs, and the coordinated core network control plane service refers to: and executing PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal by using the same SMF.

a session management context corresponding to the first terminal;

and N4 context corresponding to the first terminal.

Or alternatively, the process may be performed,

a session management context corresponding to the second terminal;

and N4 context corresponding to the second terminal.

A first updating module, configured to request, by the migration request, the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, where if the migration response indicates that migration is successful, the migration request is not used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal; or if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the migration request is used as a control plane network element corresponding to the second terminal to provide a control plane service for the second terminal.

Optionally, the first communication device and the second communication device are PCFs, and the multi-mode service implementation apparatus 140 further includes: and the first notification module is used for sending a first notification to the BSF if the migration request is used for requesting the second communication equipment to provide the coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment, wherein the first notification is used for indicating the BSF to release the binding relation between the first terminal and the first communication equipment and bind the first terminal and the second communication equipment. Or if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, sending a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the second terminal and the second communication device, and binding the second terminal and the first communication device.

Optionally, the first communication device and the second communication device are SMFs, and the multi-mode service implementation apparatus 140 further includes: a second notification module, configured to, if the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, send a second notification to at least one of the following communication devices, where the second notification is used to instruct a change of an SMF corresponding to the first terminal:

AMF；

PCF；

UPF；

or alternatively, the process may be performed,

if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, a second notification is sent to at least one of the following communication devices, and the second notification is used for indicating that the SMF corresponding to the second terminal is changed:

AMF；

PCF；

UPF。

the second receiving module is used for receiving a migration trigger request sent by the third communication equipment, and is used for indicating the first communication equipment to migrate the corresponding first terminal to the second communication equipment, and the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device.

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

or alternatively, the process may be performed,

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

optionally, the first communication device and the second communication device are PCFs, and the multi-mode service implementation apparatus 140 further includes:

the verification module is used for verifying whether migration conditions exist or not, and the conditions comprise: the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group;

the identification of the multi-mode service flow group;

Multimodal service provider identification.

Optionally, the first communication device and the second communication device are PCFs, and the third communication device includes at least one of the following communication devices:

SMF；

BSF；

a network opening function NEF;

unified data management, UDM;

network storage function NRF;

unified data warehouse UDR;

function AF is applied.

Optionally, the first communication device and the second communication device are SMFs, and the third communication device includes at least one of the following communication devices:

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

the multi-mode service implementation device in the embodiment of the application can be an electronic device, for example, an electronic device with an operating system, or can be a component in the 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.

The multi-mode service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 4, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Referring to fig. 15, an embodiment of the present application further provides a multi-mode service implementation apparatus 150, including:

a first receiving module 151, configured to receive a migration request sent by a first communication device, where the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, or the migration request is used for the first communication device to request the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device to provide a coordinated core network control plane service; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

And the first sending module is used for sending a migration response to the first communication equipment, wherein the migration response is used for indicating that migration is successful or failure.

Optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service refers to: and using the same PCF to make PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal.

session management policy association identification, ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Or alternatively, the process may be performed,

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

Optionally, the multi-mode service implementation apparatus 150 further includes:

a second sending module, configured to, if the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, send a session management context update request to an SMF bound to the first terminal, where the session management context update request is used to update an IP address or an identifier of a PCF corresponding to the first terminal; the session management context update request carries the following information:

Session management context ID;

an ID or IP address of the second communication device.

a session management context corresponding to the first terminal;

and N4 context corresponding to the first terminal.

a session management context corresponding to the second terminal;

and N4 context corresponding to the second terminal.

An updating module, configured to, if the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, determine that the second communication device is used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal;

or alternatively

If the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, it is determined that the second communication device is no longer used as a control plane network element corresponding to the second terminal to provide the control plane service for the second terminal.

and a third sending module, configured to send a first notification to a BSF if the migration request is used to request the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, where the first notification is used to instruct the BSF to release a binding relationship between the first terminal and the first communication device, and bind the first terminal and the second communication device. Or if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, sending a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the second terminal and the second communication device, and binding the second terminal and the first communication device.

The multi-mode service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 5, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Referring to fig. 16, an embodiment of the present application further provides a multi-mode service implementation apparatus 160, including:

a sending module 161, configured to send a migration trigger request to a first communication device, and instruct the first communication device to migrate a corresponding first terminal to a second communication device, where the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group.

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

SMF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

Optionally, the third communication device is an SMF; the multi-mode service implementing apparatus 160 further includes:

and the association module is used for indicating the first communication equipment to migrate the corresponding first terminal to the second communication equipment if the migration triggering request is used for providing coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment by the second communication equipment and associating the session management context ID corresponding to the first terminal with the ID of the second communication equipment. Or if the migration trigger request is used for indicating the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the session management context ID corresponding to the second terminal is associated with the ID of the first communication device.

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

The multi-mode service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 6, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Referring to fig. 17, an embodiment of the present application further provides a multi-mode service implementation apparatus 170, including:

a first sending module 171, configured to send a PDU session modification instruction to a first terminal, where the multimode service implementation device 170 is capable of providing a coordinated core network control plane service for the first terminal and a second terminal, where the first terminal and the second terminal respectively transmit multimode service flows, and the multimode service flows respectively transmitted by the first terminal and the second terminal belong to the same multimode service flow group;

A first selecting module 172, configured to select, after receiving a PDU session establishment request of the first terminal, a second UPF to carry a multi-mode service flow of the first terminal, where the second UPF is used to carry the multi-mode service flow of the second terminal.

Optionally, the first sending module 171 is configured to send the PDU session modification instruction to an AMF, and the AMF forwards the PDU session modification instruction to the first terminal.

Optionally, the multi-mode service implementation apparatus 170 further includes:

and the second selecting module is used for selecting a second PCF to formulate PCC rules for the first terminal after receiving the PDU session establishment request of the first terminal, and the second PCF can cooperatively provide a service policy for the first terminal and the second terminal.

The multi-mode service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment of fig. 7, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 18, the embodiment of the present application further provides a communication device 180, including a processor 181 and a memory 182, where the memory 182 stores a program or an instruction that can be executed on the processor 181, and the program or the instruction implements each step of the embodiment of the method for implementing a multi-mode service when executed by the processor 181, and the steps 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 communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending a migration request to second communication equipment, the migration request is used for requesting the second communication equipment to provide coordinated core network control plane services for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, or the migration request is used for requesting the first communication equipment to provide coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; receiving a migration response sent by the second communication equipment, wherein the migration response is used for indicating that migration is successful or fails; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group. The embodiment of the communication device corresponds to the embodiment of the method described in fig. 4, and each implementation process and implementation manner of the embodiment of the method are applicable to the embodiment of the communication device, and the same technical effects can be achieved.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for receiving a migration request sent by first communication equipment, the migration request is used for requesting the second communication equipment to provide coordinated core network control plane services for a first terminal corresponding to the first communication equipment and a second terminal corresponding to the second communication equipment, or the migration request is used for requesting the first communication equipment to provide coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; transmitting a migration response to the first communication device, wherein the migration response is used for indicating that migration is successful or fails; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group. The embodiment of the communication device corresponds to the embodiment of the method described in fig. 5, and each implementation process and implementation manner of the embodiment of the method are applicable to the embodiment of the communication device, and the same technical effects can be achieved.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending a migration trigger request to first communication equipment and is used for indicating the first communication equipment to migrate a corresponding first terminal to second communication equipment, and the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; the first terminal and the second terminal respectively transmit the multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group. The embodiment of the communication device corresponds to the embodiment of the method described in fig. 6, and each implementation process and implementation manner of the embodiment of the method are applicable to the embodiment of the communication device, and can achieve the same technical effects.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending a PDU session modification instruction to a first terminal, the communication equipment can provide coordinated core network control plane services for the first terminal and a second terminal, the first terminal and the second terminal respectively transmit multi-mode service flows, and the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group; the processor is configured to select, after receiving a PDU session establishment request of the first terminal, a second UPF to carry a multi-mode service flow of the first terminal, where the second UPF is used to carry the multi-mode service flow of the second terminal. The embodiment of the communication device corresponds to the embodiment of the method described in fig. 7, and each implementation process and implementation manner of the embodiment of the method are applicable to the embodiment of the communication device, and the same technical effects can be achieved.

The embodiment of the application also provides communication equipment. As shown in fig. 19, the communication device 190 includes: a processor 191, a network interface 192, and a memory 193. The network interface 192 is, for example, a common public radio interface (common public radio interface, CPRI). Specifically, the network side device 190 of the embodiment of the present application further includes: instructions or programs stored in the memory 193 and executable on the processor 191, the processor 191 invokes the instructions or programs in the memory 193 to perform the methods performed by the modules shown in fig. 14, 15, 16 or 17 to achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or an instruction, which when executed by a processor, implements each process of the embodiment of the multi-mode service implementation method, and can achieve the same technical effect, 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, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, the processes of the embodiment of the multi-mode service implementation method can be realized, the same technical effects can be achieved, and the repetition is avoided, and the description is omitted 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 embodiment of the present application further provides 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 embodiment of the multi-mode service implementation method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a communication system, which comprises: comprising the following steps: a first communication device operable to perform the steps of the multi-modal service implementation method as described above with respect to fig. 4, and a second communication device operable to perform the steps of the multi-modal service implementation method as described above with respect to fig. 5.

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 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 solution 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 (e.g. ROM/RAM, magnetic disk, optical disk) comprising 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 according to 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 having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for implementing a multi-mode service, comprising:

2. The method of claim 1, wherein the first communication device and the second communication device are policy control function PCFs, and the coordinated core network control plane service is: and using the same PCF to formulate policy and charging control PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal.

3. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration request carries at least one of the following information:

session management policy association identification, ID;

a subscription permanent identification of the first terminal or an internet protocol, IP, address of the first terminal;

a protocol data unit PDU session ID of the first terminal, wherein a PDU session corresponding to the PDU session ID carries a multi-mode service flow;

a data network name DNN;

single network slice selection auxiliary information S-nsai;

a radio access technology, RAT, type of the first terminal;

a session management function SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

or alternatively, the process may be performed,

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

4. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and after the first communication device receives a migration response sent by the second communication device, the migration request further includes:

if the migration response indicates that the migration is successful, the first communication device sends a session management context update request to an SMF corresponding to the first terminal, wherein the session management context update request is used for updating an IP address or an identifier of a PCF corresponding to the first terminal; the session management context update request carries at least one of the following information:

Session management context ID;

an ID or IP address of the second communication device;

or alternatively, the process may be performed,

session management context ID;

an ID or IP address of the first communication device.

5. The method of claim 1, wherein the first communication device and the second communication device are SMFs, and wherein the coordinated core network control plane service is: and executing PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal by using the same SMF.

6. The method of claim 5, wherein the step of determining the position of the probe is performed,

a session management context corresponding to the first terminal;

n4 context corresponding to the first terminal;

or alternatively

a session management context corresponding to the second terminal;

and N4 context corresponding to the second terminal.

7. The method of claim 1, wherein the first communication device further comprises, after receiving the migration response sent by the second communication device:

if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the first communication device is not used as a control plane network element corresponding to the first terminal to provide a control plane service for the first terminal;

Or alternatively, the process may be performed,

if the migration request is used for the first communication device to request to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration response indicates that migration is successful, the first communication device is used as a control plane network element corresponding to the second terminal to provide a control plane service for the second terminal.

8. The method of claim 1, wherein the first communication device and the second communication device are PCFs, and wherein the first communication device further comprises, after receiving the migration response sent by the second communication device:

or alternatively

9. The method of claim 1, wherein the first communication device and the second communication device are SMFs, and wherein the first communication device further comprises, after receiving the migration response sent by the second communication device:

if the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, the first communication device sends a second notification to at least one of the following communication devices, where the second notification is used for indicating that the SMF corresponding to the first terminal is changed:

AMF；

PCF；

UPF；

or alternatively

If the migration request is used for the first communication device to request to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, the first communication device sends a second notification to at least one of the following communication devices, and the second notification is used for indicating that the SMF corresponding to the second terminal is changed:

AMF；

PCF；

UPF。

10. the method of claim 1, wherein prior to the first communication device sending the migration request to the second communication device, further comprises:

The first communication equipment receives a migration trigger request sent by the third communication equipment and is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device.

11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,

if the migration trigger request is used for indicating the first communication device to migrate the corresponding first terminal to the second communication device, the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device, and the migration trigger request carries at least one of the following information:

Session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

quality of service flow identity QFI;

or alternatively;

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

12. the method of claim 10, wherein the first communication device and the second communication device are PCFs, and wherein the first communication device further comprises, after receiving the migration trigger request sent by the third communication device:

the first communication device verifies whether a condition for migration is present, the condition comprising: the multi-mode service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-mode service flow group;

the identification of the multi-mode service flow group;

multimodal service provider identification.

13. The method of claim 10, wherein the first communication device and the second communication device are PCFs and the third communication device comprises at least one of the following communication devices:

SMF；

BSF；

a network opening function NEF;

unified data management, UDM;

network storage function NRF;

unified data warehouse UDR;

function AF is applied.

14. The method of claim 10, wherein the first communication device and the second communication device are SMFs and the third communication device comprises at least one of the following communication devices:

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

15. a method for implementing a multi-mode service, comprising:

16. The method of claim 15, wherein the first communication device and the second communication device are PCFs, and wherein the coordinated core network control plane service is: and using the same PCF to make PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal.

17. The method of claim 16, wherein the step of determining the position of the probe comprises,

session management policy association identification, ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

An SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to a multi-modal traffic flow.

18. The method of claim 16, wherein the step of determining the position of the probe comprises,

the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, and after the second communication device sends a migration response to the first communication device, the method further includes:

session management context ID;

an ID or IP address of the second communication device;

or alternatively, the process may be performed,

if the migration response indicates that the migration is successful, the second communication device sends a session management context update request to an SMF bound with the second terminal, wherein the session management context update request is used for updating an IP address or an identifier of a PCF corresponding to the second terminal; the session management context update request carries the following information:

session management context ID;

an ID or IP address of the first communication device.

19. The method of claim 15, wherein the first communication device and the second communication device are SMFs, and wherein the coordinated core network control plane service is: and executing PCC rules for the multi-mode service flows respectively transmitted by the first terminal and the second terminal by using the same SMF.

20. The method of claim 19, wherein the step of determining the position of the probe comprises,

a session management context corresponding to the first terminal;

n4 context corresponding to the first terminal;

or alternatively, the process may be performed,

a session management context corresponding to the second terminal;

and N4 context corresponding to the second terminal.

21. The method of claim 15, wherein the second communication device further comprises, after sending a migration response to the first communication device:

or alternatively, the process may be performed,

22. The method of claim 15, wherein the first communication device and the second communication device are PCFs, and wherein the second communication device further comprises, after sending a migration response to the first communication device:

If the migration request is used for requesting the second communication device to provide a coordinated core network control plane service for a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device, the second communication device sends a first notification to a BSF, where the first notification is used for indicating the BSF to release the binding relationship between the first terminal and the first communication device, and bind the first terminal and the second communication device;

or alternatively

23. A method for implementing a multi-mode service, comprising:

the third communication equipment sends a migration trigger request to the first communication equipment, and the migration trigger request is used for indicating the first communication equipment to migrate a corresponding first terminal to the second communication equipment, and the second communication equipment provides a coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device;

24. The method of claim 23, wherein the step of determining the position of the probe is performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the first terminal;

an SMF ID corresponding to the first terminal;

an IP address of the SMF corresponding to the first terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI；

or alternatively, the process may be performed,

session management policy association ID;

DNN；

S-NSSAI；

the RAT type of the second terminal;

an SMF ID corresponding to the second terminal;

an IP address of the SMF corresponding to the second terminal;

a multi-modal traffic stream ID;

a multi-modal traffic group ID;

a multimodal service provider ID;

PCC rules corresponding to the multi-mode service flow;

QFI。

25. the method of claim 23, wherein the first communication device and the second communication device are PCFs and the third communication device comprises at least one of the following communication devices:

SMF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

26. The method of claim 25, wherein the third communication device is an SMF; the third communication device further includes, after sending the migration trigger request to the first communication device:

if the migration trigger request is used for indicating the first communication equipment to migrate the corresponding first terminal to the second communication equipment, the second communication equipment provides coordinated core network control plane services for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment, and the third communication equipment associates the session management context ID corresponding to the first terminal with the ID of the second communication equipment;

or alternatively

And if the migration triggering request is used for indicating the first communication equipment to migrate the second terminal corresponding to the second communication equipment to the first communication equipment, the first communication equipment provides a coordinated core network control plane service for the first terminal corresponding to the first communication equipment and the second terminal corresponding to the second communication equipment, and the third communication equipment associates the session management context ID corresponding to the second terminal with the ID of the first communication equipment.

27. The method of claim 23, wherein the first communication device and the second communication device are SMFs and the third communication device comprises at least one of the following communication devices:

PCF；

BSF；

NEF；

UDM；

NRF；

UDR；

AF。

28. a method for implementing a multi-mode service, comprising:

29. The method of claim 28 wherein the SMF sending a PDU session modification instruction to the first terminal comprises:

and the SMF sends the PDU session modification instruction to an AMF, and the AMF forwards the PDU session modification instruction to the first terminal.

30. The method as recited in claim 28, further comprising:

After receiving the PDU session establishment request of the first terminal, the SMF selects a second PCF to formulate PCC rules for the first terminal, and the second PCF can cooperatively provide a service policy for the first terminal and the second terminal.

31. A multi-mode service implementation apparatus, comprising:

the first terminal and the second terminal respectively transmit the multi-mode service flows, and the first terminal and the second terminal respectively transmit the carried multi-mode service flows belong to the same multi-mode service flow group.

32. A multi-mode service implementation apparatus, comprising:

33. A multi-mode service implementation apparatus, comprising:

a sending module, configured to send a migration trigger request to a first communication device, and instruct the first communication device to migrate a corresponding first terminal to a second communication device, where the second communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device; or, the first communication device is configured to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, and the first communication device provides a coordinated core network control plane service for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device;

34. A multi-mode service implementation apparatus, comprising:

35. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method of implementing a multimodal service according to any of claims 1 to 14 when executed by the processor, or the steps of the method of implementing a multimodal service according to any of claims 15 to 22 when executed by the processor, or the steps of the method of implementing a multimodal service according to any of claims 23 to 27 when executed by the processor; alternatively, the program or instructions, when executed by the processor, implement the steps of a multi-modal service implementation method according to any of claims 28 to 30.

36. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the steps of the method for implementing a multi-modal service according to any one of claims 1 to 14, or the steps of the method for implementing a multi-modal service according to any one of claims 15 to 22, or the steps of the method for implementing a multi-modal service according to any one of claims 23 to 27, or the steps of the method for implementing a multi-modal service according to any one of claims 28 to 30.