WO2023174221A1

WO2023174221A1 - Multi-modal service implementation method and apparatus, and communication device

Info

Publication number: WO2023174221A1
Application number: PCT/CN2023/081165
Authority: WO
Inventors: 吕华章; 柯小婉
Original assignee: 维沃移动通信有限公司
Priority date: 2022-03-15
Filing date: 2023-03-13
Publication date: 2023-09-21
Also published as: CN116801260A

Abstract

Disclosed in the present application are a multi-modal service implementation method and apparatus, and a communication device. The multi-modal service implementation method in the present application comprises: a first communication device sending a migration request to a second communication device, wherein the migration request is used for requesting the second communication device to provide a cooperative 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 to provide the cooperative 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 first communication device receiving a migration response sent by the second communication device, wherein the migration response is used for indicating a migration success or a migration failure, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows, which are respectively transmitted by the first terminal and the second terminal, belong to the same multi-modal service flow group.

Description

Multimodal service implementation methods, devices and communication equipment

Cross-references to related applications

This application claims priority from Chinese Patent Application No. 202210254374.0 filed in China on March 15, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present application belongs to the field of wireless communication technology, and specifically relates to a multi-modal service implementation method, device and communication equipment.

Background technique

Multi-modal data refers to data input from different devices or sensors required for the same task or application, or data output to different destinations (such as one or more terminals). For example, in Extended Reality (XR), there is a scenario where when a user plays an XR game, the user can also operate the controller while wearing a helmet. The server not only sends the signal of the virtual environment of the XR game. To one terminal (helmet), the tactile sensing signal can also be sent to another terminal (handle), and both the helmet and the handle serve the user in playing XR games. So, this is a scenario where an output source sends two signals to two terminals, which is multi-modal.

It can be seen from the above description that the transmission of multi-modal service flows involves at least two user equipments (User Equipment, UE, also called terminals), and the policies and plans corresponding to the multi-modal service flows carried by at least two UEs respectively Policy and Charging Control (PCC) rules need to be formulated collaboratively to be beneficial to the realization of multi-modal services. This is because there are certain correlations between multi-modal business flows, the most important of which is synchronization. For example, two multi-modal service flows need to arrive at two terminals at the same time with almost the same delay, and the delay requirements for the two multi-modal service flows are stipulated in the PCC rules. If it can be ensured that the PCC rules corresponding to the multi-modal service flows carried by at least two terminals are formulated in one PCF, then it will be beneficial to the multi-modal service flows, because the formulation of each other's rules can be mutually referenced and dynamically adjusted. . However, in actual situations, due to geographical differences or load balancing reasons, at least two UEs carrying multi-mode service flows must be divided into 5th Generation Mobile Communication Technology (5G) core network (5GC) network elements (such as Policy Control Function (PCF) or Session Management Function (SMF)) that provide special services ) There is a high probability that they are different network elements. If the different network elements need to coordinate PCC rules or adjustments, it will be relatively difficult, and thus they will not be able to provide coordinated core network services.

Contents of the invention

The embodiments of the present application provide a multi-modal service implementation method, device and communication equipment, which can solve the problem of how to provide a coordinated core network for a group of terminals carrying different multi-modal service flows belonging to the same multi-modal service flow group. Service issues.

The first aspect provides a multi-modal business implementation method, including:

The first communication device sends a migration request to the second communication device. The migration request is used to request the second communication device to be the first terminal corresponding to the first communication device and the third terminal corresponding to the second communication device. The two terminals provide coordinated core network control plane services, or the migration request is used by the first communication device to request a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device. Provide coordinated core network control plane services;

The first communication device receives a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure;

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

The second aspect provides a multi-modal business implementation method, including:

The second communication device receives a migration request sent by the first communication device. The migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the first terminal corresponding to the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by 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. The terminal provides coordinated core network control plane services;

The second communication device sends a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure;

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

The third aspect provides a multi-modal business implementation method, including:

The third communication device sends a migration trigger request to the first communication device to instruct the first communication device to migrate the corresponding first terminal to the second communication device. The second communication device is the first communication device. The corresponding first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the second terminal corresponding to the second communication device to The terminal migrates to the first communication device, and the first communication device provides 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; Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.

The fourth aspect provides a multi-modal business implementation method, including:

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

After receiving the PDU session establishment request from the first terminal, the SMF selects a second UPF to carry the multi-modal service flow of the first terminal, and the second UPF carries the multi-modal service flow of the second terminal. .

In the fifth aspect, a multi-modal service implementation device is provided, including:

A first sending module, configured to send a migration request to a second communication device, where the migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the first terminal corresponding to the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by the first communication device to request to provide the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Collaborative core network control plane services;

A first receiving module configured to receive a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure;

The sixth aspect provides a multi-modal service implementation device, including:

The first receiving module is configured to receive a migration request sent by the first communication device, where the migration request is used to request the second communication device to be the first terminal corresponding to the first communication device and the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by 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. Provide coordinated core network control plane services;

A first sending module, configured to send a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure;

The seventh aspect provides a multi-modal service implementation device, including:

A sending module, configured to send a migration trigger request to the first communication device to instruct the first communication device to migrate the corresponding first terminal to a second communication device, and the second communication device provides the first communication The first terminal corresponding to the device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the third terminal corresponding to the second communication device. The two terminals are migrated to the first communication device, and the first communication device provides 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. ; Wherein, the first terminal and the second terminal transmit multi-modal service flows respectively, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group. .

In the eighth aspect, a multi-modal service implementation device is provided, including:

The first sending module is configured to send a PDU session modification instruction to the first terminal. The multi-modal service implementation device can provide coordinated core network control plane services for the first terminal and the second terminal. The first terminal The multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group;

A first selection module, configured to select a second UPF to carry the multi-modal service flow of the first terminal after receiving the PDU session establishment request of the first terminal, and the second UPF carries the multi-modal service flow of the second terminal. Modal business flow.

In a ninth aspect, a communication device is provided. The communication device includes a processor and a memory, so The memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the method described in the first aspect, the second aspect, the third aspect or the fourth aspect is implemented. step.

In a tenth aspect, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to send a migration request to a second communication device, and the migration request is used to request the second communication device to be the The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services, or the migration request is used for the first communication device to request for the The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; receive a migration response sent by the second communication device, where the migration response is used to indicate The migration is successful or the migration fails; wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow. Modal business flow group.

In an eleventh aspect, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a migration request sent by a first communication device, and the migration request is used to request the second communication device 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, or the migration request is used to request the first communication device Provide collaborative 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; send a migration response to the first communication device, where the migration response is used Indicates migration success or migration failure; wherein the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same Multimodal business flow group.

In a twelfth aspect, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to send a migration trigger request to the first communication device to instruct the first communication device to transfer the corresponding third communication device to the first communication device. A terminal migrates to a second communication device, and the second communication device provides 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. ; Or, used 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 is the first communication device corresponding to the first communication device. The terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; wherein the first terminal and the second terminal respectively transmit multi-modal Service flow: the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow group.

In a thirteenth aspect, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to send a PDU session modification instruction to the first terminal, and the communication device can provide the first terminal and the first terminal with a PDU session modification instruction. Two terminals provide coordinated core network control plane services. The first terminal and the second terminal respectively transmit multi-modal service flows. The multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to The same multi-modal service flow group; the processor is configured to select a second UPF to carry the multi-modal service flow of the first terminal after receiving the PDU session establishment request of the first terminal, the The second UPF carries the multi-modal service flow of the second terminal.

In a fourteenth aspect, a communication system is provided, including: a first communication device and a second communication device. The first communication device can be used to perform the steps of the multi-modal service implementation method described in the first aspect. The network side device may be used to perform the steps of the multi-modal service implementation method described in the second aspect.

In a fifteenth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the implementation of the first aspect, the second aspect, the third aspect, or The steps of the method described in the fourth aspect.

In a sixteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the first aspect and the second aspect. The method described in the aspect, the third aspect or the fourth aspect.

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

In the embodiment of the present application, communication equipment with the same set of services can be selected for a group of terminals carrying different multi-modal service flows belonging to the same multi-modal service flow group, so as to ensure that various users of multi-modal service flows Experience and communication metrics.

Description of the drawings

Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is an example of multi-modal business Figure 1;

Figure 3 is an example of multi-modal services Figure 2;

Figure 4 is one of the flow diagrams of the multi-modal service implementation method according to the embodiment of the present application;

Figure 5 is a second schematic flowchart of the multi-modal service implementation method according to the embodiment of the present application;

Figure 6 is the third schematic flowchart of the multi-modal service implementation method according to the embodiment of the present application;

Figure 7 is the fourth schematic flowchart of the multi-modal service implementation method according to the embodiment of the present application;

Figure 8 is a schematic flow chart of the multi-modal service implementation method in Embodiment 1.0 of the present application;

Figure 9 is a schematic flow chart of the multi-modal service implementation method in Embodiment 1.1 of the present application;

Figure 10 is a schematic flow chart of the multi-modal service implementation method in Embodiment 1.2 of the present application;

Figure 11 is a schematic flow chart of the multi-modal service implementation method in Embodiment 2 of the present application;

Figure 12 is a schematic flow chart of the multi-modal service implementation method in Embodiment 3 of the present application;

Figure 13 is a schematic flow chart of the multi-modal service implementation method in Embodiment 4 of the present application;

Figure 14 is one of the structural schematic diagrams of the multi-modal service implementation device according to the embodiment of the present application;

Figure 15 is the second structural schematic diagram of the multi-modal service implementation device according to the embodiment of the present application;

Figure 16 is the third structural schematic diagram of the multi-modal service implementation device according to the embodiment of the present application;

Figure 17 is the fourth structural schematic diagram of the multi-modal service implementation device according to the embodiment of the present application;

Figure 18 is one of the structural schematic diagrams of the communication device according to the embodiment of the present application;

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

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

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

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

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

The meaning of multimodal data is further explained below.

Please refer to Figures 2 and 3. The situations shown in Figures 2 and 3 are all multi-modal:

Case 1: Multi-terminal single server (Application server): The server sends two signals to two terminals (UE1 and UE2), and the two terminals complete a task or business at the same time.

Scenario 2: Multiple terminals and multiple servers. There are multiple servers, each sending different data to different terminals to complete the same business.

Generally speaking, the biggest characteristics of multimodal data include:

1) The same service consists of multiple data streams, which are sent to multiple terminals respectively;

2) In order to ensure service effects, the relative delay between multiple data flows should generally be kept low to ensure better synchronization. For example, in order to ensure the experience of XR games, the two data channels of video signal (such as game environment) and audio signal must be guaranteed to be within a certain delay (for example, the delay between video data and audio data cannot be high). in an upper bound). If the synchronization of the two data channels is not good, the business experience will be poor. The game scenes in the helmet have been switched, but the audio signal is seriously lagging, resulting in poor game effects.

For example, Table 1 gives an example: The video or audio delay given in Table 1 is relative to another data stream. For example, service effects can be guaranteed when the delay between audio and video does not exceed 50ms; and when the delay between audio and tactile signals does not exceed 25ms, service experience and effects can be guaranteed.

Table 1 Typical synchronization thresholds for immersive multi-modal virtual reality technology (Virtual Reality, VR) applications

Therefore, it can be seen from the above introduction that the formulation and specific execution of PCC rules for multi-modal business flows have certain constraints and references. For example, the multi-modal service flow carried by UE 1 and the multi-modal service flow carried by UE 2 have a certain correlation in the characteristics of these two QoS flows.

From a design perspective, if it can be ensured that the 5GC network element (PCF) that formulates policy and charging control (PCC) rules for the multi-modal service flows of these two UEs, and the 5GC network that specifically implements the PCC rules for the multi-modal service flows (SMF) is the same group of network elements, then this will have certain benefits for multi-modal services. For example, if the same PCF formulates PCC rules, the PCFs can mutually refer to the PCC rules corresponding to the two multi-modal service flows and adjust the parameters (such as delay) of the specific QoS flows in the PCC rules.

The multi-modal service implementation method, device and communication equipment provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Please refer to Figure 4. This embodiment of the present application provides a multi-modal service implementation method, including:

Step 41: The first communication device sends a migration request to the second communication device. The migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the second communication device. The corresponding second terminal provides coordinated core network control plane services, or the migration request is used by the first communication device to request the first terminal corresponding to the first communication device and the second communication device corresponding The second terminal provides coordinated core network control plane services; wherein the first terminal and the second terminal respectively transmit multi-modal service flows, and the first terminal and the second terminal respectively transmit multi-modal service flows. Business flows belong to the same multimodal business flow group.

The terminal transmits multi-modal service flows, which can also be described as the Protocol Data Unit (PDU) session on the terminal carrying multi-modal service flows.

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

Step 42: The first communication device receives a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure.

In the embodiment of this application, the first communication device and the second communication device that provide core network control plane services for terminals are core network elements. Specifically, they may be PCFs used to formulate PCC rules, or they may be used to execute PCC Regular SMF, or other core network elements, such as UPF user plane functions that carry multi-modal service flow transmission. The following is an example in which the first communication device and the second communication device that provide core network control plane services for the terminal are PCF or SMF respectively.

In some embodiments, optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service means: using the same PCF to provide services for the first terminal and the second terminal. PCC rules are formulated for multi-modal service flows transmitted by terminals respectively.

Optionally, in one implementation, the first communication device uses the first PCF to generate PCC rules, the second communication device uses the second PCF to generate PCC rules, and the first PCF triggers the migration request and sends the information about multi-modal service flows related to the first communication device to the second PCF, Let the second PCF subsequently be responsible for formulating PCC rules for multi-modal service flows carried by the first communication device and the second communication device respectively. That is, the migration request is used to request the second 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 migration request carries at least one of the following information:

Session management policy association ID (SM Policy Association ID);

The Subscription Permanent Identifier (SUPI) of the first terminal or the Internet Protocol (IP) address of the first terminal;

The protocol data unit (PDU) session ID (PDU Session id) of the first terminal, wherein the PDU session corresponding to the PDU session ID carries multi-modal service flows;

Data Network Name (DNN);

Single Network Slice Selection Assistance Information (S-NSSAI);

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

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

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

Multi-modal business flow ID (multiple modal ID or multiple modal flow ID) is used to identify multi-modal business flows. Multi-modal business flows can also be called QoS flows. Multi-modal business flow IDs can also be called QoS flow IDs. (QoS Flow ID, QFI) means;

Multi-modal business flow group ID (multiple modal group ID), also known as multi-modal business group ID;

Multimodal service provider ID (multiple modal provider ID);

PCC rules corresponding to multi-modal business flows.

Among them, the PCC rules include at least one of the following:

5G QoS Identifier (5QI);

QoS Notification Control (QNC);

Uplink maximum bitrate (UL-maximum bitrate);

Downlink maximum bitrate (DL-maximum bitrate);

Uplink guaranteed bitrate (UL-guaranteed bitrate);

Downlink guaranteed bitrate (DL-guaranteed bitrate);

Allocation and Retention Priority (ARP):;

Priority Level;

Averaging Window;

Maximum Data Burst Volume;

Packet delay budget (PDB).

By sending the above information, the second communication device can learn the first terminal and/or relevant information of the multi-modal service flow transmitted by the first terminal, thereby providing core plane control services for the first terminal.

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

Session management policy association ID;

The permanent subscription identification of the second terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

In some embodiments of the present application, the first communication device may obtain the second terminal and/or relevant information about the multi-modal service flow transmitted by the second terminal, and by sending the above information to the second communication device, the second communication device may The device learns that it needs to migrate to the second terminal on 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 the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Collaborative core network control plane service, the first communication device receives the transmission sent by the second communication device After the migration response is sent, it also includes: if the migration response indicates that the migration is successful, the first communication device sends a session management context update request to the SMF corresponding to the first terminal, and the session management context update request is used to update The IP address or identification of the PCF corresponding to the first terminal; the session management context update request carries at least one of the following information:

Session management context ID;

The 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 identification of the PCF corresponding to the first terminal in the PDU session context to the IP address or identification of the second communication device, so that the SMF corresponding to the first terminal can be informed. The new PCF corresponding to the first terminal.

or,

The migration request is used by the first communication device to request 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. After the communication device receives the migration response sent by the second communication device, it further includes:

If the migration response indicates that the migration is successful, the first communication device sends a session management context update request to the SMF corresponding to the second terminal. The session management context update request is used to update the SMF corresponding to the second terminal. The IP address or identity of the PCF; the session management context update request carries at least one of the following information:

Session management context ID;

The 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 identification of the PCF corresponding to the second terminal in the PDU session context to the IP address or identification of the first communication device, so that the SMF corresponding to the second terminal can be informed. The new PCF corresponding to the second terminal.

Optionally, the first communication device and the second communication device are PCFs. After the first communication device receives the migration response sent by the second communication device, it further includes:

If the migration request is used to request the second 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, then The first communication device sends a first notification to the BSF, the first notification is used to instruct the BSF to release the binding relationship between the first terminal and the first communication device, and connect the first terminal to the first communication device. Second communication device binding;

or

If the migration request is used by the first communication device to request 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 device A communication device sends a first notification to the BSF. The first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device and connect the second terminal to the first communication device. Communication device binding.

This allows the BSF to update the binding relationship between the terminal and the PCF.

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

By triggering the migration request, the first communication device can be triggered to migrate the first terminal to the second communication device, or to 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 the The first terminal corresponding to the communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the migration trigger request carries at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the first terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Control plane information of the multi-modal service flow of the first terminal or the second terminal;

Quality of Service Flow ID (QFI);

By carrying the above information, the first communication device can learn relevant information of the first terminal that needs to be migrated.

or,

If the migration trigger request is used to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device is the one corresponding to the first communication device. The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; 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 second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI.

By carrying the above information, the first communication device can learn relevant information of the second terminal that 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, it further includes: the first communication device verifies whether it meets the conditions for migration, and the conditions include: The multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group; only when the first terminal and the second terminal carry the same multi-modal service Only when there are multi-modal service flows in the flow group, it is possible to use the same set of PCF and/or SMF to control the first communication device and the second communication device.

Wherein, when at least one of the following information of the multi-modal service flows respectively transmitted by the first terminal and the second terminal is the same, they belong to the same multi-modal service flow group:

The identification of the multi-modal service flow group;

Multimodal service provider identifier.

The first communication device verifies whether it meets the conditions for migration. Only when the first terminal and the second terminal carry multi-modal service flows belonging to the same multi-modal service flow group, the first communication device can use the same set of multi-modal service flows. PCF and/or SMF control the possibility of the first communication device and the second communication device, thereby avoiding incorrect migration.

In this 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, which is different from the migration request being triggered directly by the first communication device (eg, PCF).

In some embodiments, optionally, the first communication device and the second communication device are SMF, so The coordinated core network control plane service refers to using the same SMF to execute PCC rules for the multi-modal service flows transmitted separately by the first terminal and the second terminal.

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

The session management (SM, session management) context corresponding to the first terminal; the SM context, also called PDU session context, mainly includes some parameters or information corresponding to the PDU session, such as PDU session ID, UE location Information and so on.

The N4 context corresponding to the first terminal. The N4 context is mainly control information generated by SMF for UPF according to PCC rules, and is used to instruct UPF operations. For example, Packet DataRule (PDR) is used to identify data packets arriving at UPF.

The migration request is used by the first communication device to request 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 migration request contains at least one of the following information:

The session management (SM) context corresponding to the second terminal; the SM (session management) context, also called the PDU session context, mainly includes some parameters or information corresponding to the PDU session, such as PDU session ID, UE location information, etc.

The N4 context corresponding to the second terminal. The N4 context is mainly control information generated by SMF for UPF according to PCC rules, and is used to instruct UPF operations. For example, Packet DataRule (PDR) is used to identify data packets arriving at UPF.

Optionally, after the first communication device receives the migration response sent by the second communication device, it further includes: if the migration request is used to request the second communication device to be the third communication device corresponding to the first communication device. A terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the migration response indicates that the migration is successful, and the first communication device no longer serves as the terminal corresponding to the first terminal. The control plane network element provides control plane services for the first terminal, and the second communication device provides control plane services for the first terminal; or, if the migration request is for the first communication device, the request is for the first terminal. The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the migration response indicates successful migration, and the first communication device serves as the third communication device. The control plane network element corresponding to the second terminal provides the second terminal with Provides control plane services.

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

or

This allows the BSF to update the binding relationship between the terminal and the communication device.

Optionally, if the migration request is used to request the second communication device to provide coordinated core network control 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, it further includes: the first communication device sends a second notification to at least one of the following communication devices, and the second notification is To indicate that the SMF corresponding to the first terminal has changed:

AMF;

PCF;

UPF;

or

If the migration request is used for the first communication device to request 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 device sends a second notification to at least one of the following communication devices, where the second notification is used to indicate that the SMF corresponding to the second terminal is changed:

AMF;

PCF;

UPF.

This allows the relevant core network equipment to learn that the SMF serving the terminal has changed.

Optionally, before the first communication device sends the migration request to the second communication device, the method further includes: the first communication device receiving a migration trigger request sent by the third communication device to instruct the first communication device to transfer the corresponding third communication device to the second communication device. A terminal migrates to a second communication device, and the second communication device provides 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. ; Or, used 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 is the first communication device corresponding to the first communication device. The terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services.

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 the third communication device corresponding to the first communication device. A terminal and a second terminal corresponding to the second communication device provide coordinated core network control plane services, 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Quality of Service Flow Identification (QFI);

or,

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

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 embodiment, the multi-modal service implementation method executed by the sender of the migration request is described. The multi-modal service implementation method executed by the receiver of the migration request will be described below.

Please refer to Figure 5. This embodiment of the present application provides a multi-modal service implementation method, including:

Step 51: The second communication device receives a migration request sent by the first communication device. The migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the second communication device. The corresponding second terminal provides coordinated core network control plane services, or the migration request is for the first communication device. The request is for the first terminal corresponding to the first communication device and the second communication device. The second terminal provides coordinated core network control plane services; wherein, the first terminal and the second terminal respectively transmit multi-mode service flows, and the first terminal and the second terminal respectively transmit multi-mode service flows. Modal business flows belong to the same multi-modal business flow group.

Step 52: The second communication device sends a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure.

In some embodiments, optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service means: using the same PCF to provide services for the first terminal and the third terminal. PCC rules are formulated for the multi-modal service flows transmitted by the two terminals respectively.

Optionally, in one implementation, the first communication device uses the first PCF to generate PCC rules, the second communication device uses the second PCF to generate PCC rules, and the first PCF triggers the migration request and sends the Information about the multi-modal service flow related to the first communication device is sent to the second PCF, and the second PCF is subsequently responsible for formulating PCC rules for the multi-modal 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

or,

Session management policy association ID;

The PDU session ID of the second terminal, where the PDU corresponding to the PDU session ID will The phone carries multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

Among them, the PCC rules include at least one of the following:

5G QoS Identifier (5QI);

QoS Notification Control (QNC);

Uplink maximum bitrate (UL-maximum bitrate);

Downlink maximum bitrate (DL-maximum bitrate);

Uplink guaranteed bitrate (UL-guaranteed bitrate);

Downlink guaranteed bitrate (DL-guaranteed bitrate);

Allocation and Retention Priority (ARP):;

Priority Level;

Averaging Window;

Maximum Data Burst Volume;

Packet delay budget (PDB).

Optionally, the migration request is used to request the second communication device to provide a coordinated core network control plane for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. service, after the second communication device sends a migration response to the first communication device, it 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 to the first terminal. The session management context update request is used to update the SMF corresponding to the first terminal. IP address or identity of the PCF; the session management context is updated The request carries the following information:

Session management context ID;

The 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 identity of the PCF corresponding to the first terminal in the PDU session context to the IP address or identity of the second communication device.

or,

The migration request is used by the first communication device to request 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. After the communication device sends the migration response to the first communication device, it 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 to the second terminal. The session management context update request is used to update the session management context corresponding to the first terminal. The IP address or identity of the PCF; the session management context update request carries the following information:

Session management context ID;

The ID or IP address of the first communication device.

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

If the migration request is used to request the second 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, and The migration response indicates that the migration is successful, and the second communication device serves as the control plane network element corresponding to the first terminal to provide control plane services for the first terminal;

or,

If the migration request is used by the first communication device to request 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, and the The migration response indicates that the migration is successful, and the second communication device no longer serves as the control plane network element corresponding to the second terminal to provide control plane services for the second terminal.

Optionally, the first communication device and the second communication device are PCFs. After the second communication device sends a migration response to the first communication device, it further includes:

If the migration request is used to request that the second communication device corresponds to the first communication device The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the second communication device sends a first notification to the BSF, and the first notification is used to instruct the BSF Release the binding relationship between the first terminal and the first communication device, and bind the first terminal to the second communication device.

or

If the migration request is used by the first communication device to request 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 device The second communication device sends a first notification to the BSF. The first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device and connect the second terminal to the first communication device. Communication device binding.

In some embodiments, optionally, the first communication device and the second communication device are SMFs, and the coordinated core network control plane service means: using the same SMF for the first terminal and the second The multi-modal service flows transmitted separately by the terminal execute PCC rules.

The 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, such as PDU session ID, UE location information, etc. The N4 context is mainly control information generated by SMF for UPF according to PCC rules, and is used to instruct UPF operations. For example, Packet Data Rule (PDR) is used to identify data packets arriving at UPF.

The N4 context corresponding to the first terminal.

Alternatively, the migration request is used by the first communication device to request 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, and the The migration request carries at least one of the following information:

The session management (SM) context corresponding to the second terminal; the SM (session management) context, also called the PDU session context, mainly includes some parameters or information corresponding to the PDU session, such as PDU session ID, UE location information, etc. The N4 Context, mainly the control information generated by SMF for UPF according to PCC rules, is used to instruct UPF operations. For example, Packet Data Rule (PDR) is used to identify data packets arriving at UPF.

The N4 context corresponding to the second terminal.

If the migration request is used to request the second 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, and The migration response indicates that the migration is successful, the second communication device serves as the control plane network element corresponding to the first terminal and provides control plane services for the first terminal, and the first communication device no longer provides control plane services for the first terminal. One terminal provides control plane services;

or,

In the embodiment of this application, the migration request initiated by the first communication device may be triggered by itself or triggered by other devices. The implementation method of triggering and initiated by other devices is described below.

Please refer to Figure 6. This embodiment of the present application provides a multi-modal service implementation method, including:

Step 61: The third communication device sends a migration trigger request to the first communication device to instruct the first communication device to migrate the corresponding first terminal to the second communication device, and the second communication device provides the migration trigger request for the third communication device. The first terminal corresponding to a communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to configure the second terminal corresponding to the second communication device. The second terminal migrates to the first communication device, and the first communication device provides coordinated core network control for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. multi-modal service; wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service. flow group.

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI;

or,

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

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; after the third communication device sends a migration trigger request to the first communication device, it further includes: if the migration trigger request is used to indicate the first communication device, The communication device migrates the corresponding first terminal to the second communication device, and the second communication device provides collaboration for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. core network control plane service, the third communication device associates the session management context ID corresponding to the first terminal with the ID of the second communication device. Alternatively, if the migration trigger request is used to instruct the first communication device to migrate the second terminal corresponding to the second communication device Moving to the first communication device, the first communication device provides 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, so 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 network elements in the control plane are migrated, so that one control plane network element can be used to provide coordinated core network control plane services for different terminals carrying multi-modal service flows. On the user plane, user plane network elements can also be migrated, so that one user plane network element can be used to provide coordinated core network user plane services for different terminals carrying multi-modal service flows. This will be explained in detail below.

Please refer to Figure 7. This embodiment of the present application provides a multi-modal service implementation method, including:

Step 71: The SMF sends a PDU session modification instruction to the first terminal. The SMF can provide collaborative core network control plane services for the first terminal and the second terminal. The first terminal and the second terminal transmit respectively. Multi-modal service flows, the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group; the purpose of the SMF sending the PDU session modification instruction to the first terminal is to: The first terminal replaces the UPF carrying the multi-modal service flow with the UPF carrying the multi-modal service flow of the second terminal, that is, the same UPF is used to carry two multi-modal service flows at the same time. (The two multi-modal service flows belong to the same multi-modal service flow group).

Step 72: After receiving the PDU session establishment request from the first terminal, the SMF selects a second UPF to carry the multi-mode service flow of the first terminal, and the second UPF carries the multi-mode service flow of the second terminal. dynamic business flow.

In the embodiment of the present application, the SMF triggers and executes UPF switching, so that the same UPF is used to provide coordinated core network user plane services for different terminals carrying multi-modal service flows. That is, the same UPF is used to simultaneously carry the multi-modal service flow of terminal 1 and the multi-modal service flow of terminal 2.

In this embodiment of the present application, optionally, the SMF sending the PDU session modification instruction to the first terminal includes: the SMF sending the PDU session modification instruction to the AMF, and the AMF forwarding the PDU session modification instruction to the First terminal.

In this 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 The second PCF can cooperatively provide a service policy for the first terminal and the second terminal.

The specific method for the SMF to select the second PCF to formulate PCC rules for the first terminal can be found in the method of triggering the migration of the first communication device by the third communication device in the above embodiment, and the description will not be repeated here.

The following is an example of the multi-modal service implementation method of this application based on specific application scenarios.

Embodiment 1 of this application: Multi-modal PCF migration

Example 1.0 of this application:

Please refer to Figure 8. The multi-modal service implementation method in this embodiment of the present application includes:

Step 1: The application function (Application Function, AF) decides to establish multi-modal services to multiple UEs. AF represents the server (Application Server, AS).

Step 2: The AF requests to establish multiple QoS flows (ie, multi-modal service flows) for multiple UEs, and these multiple QoS flows form a multi-modal service flow group. AF trigger: Nnef_AFsessionWithQoS_Create/Update request.

The Nnef_AFsessionWithQoS_Create/Update request carries the following content: multi-modal service flow group information. The multi-modal service flow group refers to the QoS flow that the server hopes to establish to multiple UEs. These QoS flows form a multi-modal service flow group.

Multimodal business flow group information includes at least one of the following:

Multi-modal business flow group identification. For the server, each multi-modal business flow group identification is unique.

IP addresses of multiple UEs and corresponding flow description information (Flow description(s)), QoS reference information (QoS Reference), and QoS parameters (QoS parameters).

for example:

AF (representing Tencent's server) requests to establish multi-modal service flows to UE 1 and UE 2, then AF triggers: Nnef_AFsessionWithQoS_Create/Update request. This message includes:

Multimodal business flow identification (multiple modal ID);

Multimodal service provider ID (multiple modal provider ID);

QoS flow information of UE 1 (for example, including UE 1 IP address (UE 1 IP address), flow description information (Flow description(s)), QoS reference information (QoS Reference), QoS parameter information (QoS parameters));

QoS flow information of UE 2 (for example, including UE 2 IP address (UE 2 IP address), flow description information (Flow description(s)), QoS reference information (QoS Reference), QoS parameter information (QoS parameters)).

In this way, the Network Exposure Function (NEF) knows that the AF is requesting the establishment of a multi-modal service flow group, and is requesting the establishment of two QoS flows to UE 1 and UE 2 respectively.

Step 3: NEF verifies whether AF's request is legal.

Step 4: NEF determines the PCF serving each UE based on the received AF request. Since the AF request is a multi-modal service flow group, it includes at least two UE IP addresses. Therefore, the NEF triggers a query request to the Binding Support Function (BSF), which is used to request to obtain PCFs corresponding to all UEs in the multi-modal service flow group.

For example, NEF triggers signaling to BSF, and the signaling is: Nbsf_Management discovery. The Nbsf_Management discovery includes: UE1 IP address (UE 1 IP address), UE2 IP address (UE 2 IP address).

Step 5: After receiving the NEF request, the BSF will search for multiple PCFs for multiple UEs in the multi-modal service flow group since it has received the IP addresses of multiple UEs. BSF feeds back Nbsf_Management_Discovery response to NEF. The Nbsf_Management_Discovery response includes: PCF's IP address, PCF identification (PCF instance ID) and/or PCF group identification (PCF set ID). But these PCFs all correspond to specific UEs.

For example, BSF found for UE 1 and UE 2 respectively:

Corresponding to UE 1: PCF IP address, PCF identification (PCF instance ID), PCF group identification (PCF set ID);

UE 2 corresponds to: PCF IP address, PCF identification (PCF instance ID), PCF group identification (PCF set ID).

The following steps 6 and 7 are one group, which is the policy approval establishment or policy approval update for UE2; Steps 8 to 9 are one group, which are the policy approval establishment or policy approval update for UE1.

Step 6: After receiving the PCF corresponding to each UE in the multi-modal service flow group, the NEF triggers a policy approval request or a policy approval update request to the PCF in order to approve the establishment of the QoS flow requested by the AF.

For example, NEF sends Npcf_PolicyAuthorization_Create/Update request to PCF2. The parameters included in this message include multi-modal business flow group information. The multi-mode service flow group refers to the QoS flow that the server wants to establish to multiple UEs. These QoS flows form a multi-modal service flow group. The multi-modal service flow group information includes at least one of the following:

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

Step 7: PCF2 responds whether the approval is passed.

Steps 8 to 9 are the same as steps 6 to 7, except that the policy approval is established or the policy approval is updated for UE1.

After steps 6 and 7, and after steps 8 and 9, NEF can maintain the association with each PCF. In other words, NEF knows the IP address of each PCF at this time, and each PCF also knows the IP address of NEF.

Step 10: When the QoS establishment request passes or fails, then NEF sends a message to AF.

For example, NEF sends Nnef_AFsessionWithQoS_Create/Update response to AF. The message includes: PCF IP address corresponding to each UE in the multi-modal service flow group, PCF identification (PCF instance ID) and/or PCF group identification (PCF set ID) ).

Step 11: PCF1 selects SMF1 to serve UE1, and PCF2 selects SMF2 to serve UE2. At this time, UE 1 corresponds to PCF 1+SMF 1, and UE2 corresponds to PCF 2+SMF 2.

In order to ensure that the same control plane (PCF and SMF) is used to serve two UEs, it is assumed that both PCF2 and SMF2 are used, so UE1 needs to be migrated from PCF 1 to PCF2 and from SMF 1 to SMF2.

Step 12: Assume that PCF1 and PCF2 know each other's information through AF, NEF, UDM, UDR and/or NRF, etc., and SMF1 and SMF2 know each other's information (for example, know their respective IP address information and/or identification (instance) ID) information, PCF1 knows the IP address of PCF2, and SMF1 knows the IP address of SMF2).

Embodiment 1.1 of this application: PCF migration triggered by PCF

Please refer to Figure 9. The multi-modal service implementation method in this embodiment of the present application includes:

The following process follows step 12 in Example 1.0.

Step 0: PCF 1 has learned the PCF IP address corresponding to PCF2.

Step 1: PCF 1 sends a relocation request (PCF relocation request) to PCF 2. The purpose is to let PCF 2 be responsible for formulating PCC rules for UE 1 (it may also include other rules).

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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

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

Step 3: PCF 1 or PCF 2 needs to update the previous binding relationship to BSF. For example, to BSF Send Nbsf_Management_Update. The parameters in Nbsf_Management_Update include: Binding Identifier for the PDU Session, new PCF 2 ID or IP address. In this way, the BSF knows that the PCF to which a certain UE belongs has changed.

Then, PCF2 can replace PCF1 and generate PCC rules for the multi-modal service flow of UE1.

Step 4: PCF2 sends Nsmf_PDUSession_UpdateSMContext Request (the above-mentioned session management context update request) to SMF to request SM context (context) update. The Nsmf_PDUSession_UpdateSMContext Request includes at least one of the following:

Session management context ID (SM Context ID);

PCF ID (new PCF 2 ID) or IP address.

The step 4 process is used to update the PDU session context corresponding to the multi-modal service flow of the first terminal and replace the PCF ID in the context with PCF 2.

At this point, all UEs carrying the same group of multi-modal service flows are provided by PCF2. PCF2 generates PCC rules for the multi-modal service flows on these terminals. At the same time, since they are the same PCF, PCC rules can be dynamically adjusted. .

Embodiment 1.2 of this application: PCF migration triggered by SMF

Please refer to Figure 10. The multi-modal service implementation method in this embodiment of the present application includes:

The following process follows step 12 in Example 1.0.

Step 0: SMF decides to trigger PCF migration. At this time, SMF has obtained the IP address of PCF 2 corresponding to another multi-modal service flow in the multi-modal flow group service.

Step 1: SMF triggers PCF migration and sends a migration trigger request to PCF 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Quality of Service Flow Identification (QFI).

Step 2: PCF 1 needs to verify this request and determine whether the conditions for migration are met. The conditions include: the multi-modal service flows carried by UE1 and UE2 respectively belong to the same multi-modal service flow group. If the multi-modal service flows carried by UE1 and UE2 do not belong to the same multi-modal service flow group, the migration request cannot be verified.

Step 3: If PCF 1 verifies that it has the conditions for migration, it sends a migration request to PCF 2.

Step 4-6: See Example 1.1.

Step 7: SM context update. SMF can complete this process by itself, just replace the PCF ID of UE1 with the ID of PCF 2. Because the migration request is triggered by SMF itself, SMF can complete the context update by itself.

Implementation Mode 2 of this application: SMF migration triggered by SMF

In order for multiple UEs corresponding to the multi-modal service flow group to be served by the same SMF, the SMF migration process needs to be considered.

Please refer to Figure 11. The multi-modal service implementation method in this embodiment of the present application includes:

The following process follows step 12 in Example 1.0.

Step 1: SMF 1 obtains the IP address of another SMF 2 that controls the multi-modal service flow group carried by the second terminal from a network element such as PCF or BSF.

Step 2: SMF 1 sends a migration request (SMF relocation request) to SMF 2. The migration request includes at least one of the following:

The session management context corresponding to UE1; that is, the SM context of the multi-modal service flow controlled by SMF 1. This part of the context must also be sent to the new SMF. That is, SMF 1 wants to send the context of the PDU session carrying the multi-modal service flow in UE1 to SMF 2.

N4 context corresponding to UE1. That is, the N4 context in the user plane function (User Plane Function, UPF) of the multi-modal service flow of UE1 controlled by SMF 1 must also be sent to SMF 2.

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

Step 4: If SMF migration is completed, then SMF 1 should notify at least one of the following nodes that SMF migrates and the affiliation changes to SMF 2:

AMF: Notify AMF that the SMF to which UE1 belongs has changed to SMF 2;

PCF: Notify PCF that the SMF to which UE1 or UE1's PDU session belongs has changed to SMF 2;

UPF: Notify UPF that the controlled SMF of all PDU sessions of UE1 changes to SMF 2.

Step 5: SMF 2 updates the binding relationship to BSF, the same as in Embodiment 1.1.

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

Step 7: SMF 2 executes the PCC rules corresponding to the two UEs in the multi-modal service flow group, so that they can be used or executed collaboratively.

Implementation Mode 3 of this application: Other network elements trigger PCF or SMF migration

Please refer to Figure 12. The multi-modal service implementation method in this embodiment of the present application includes:

Step 1 to Step 12: Same as Step 1 to Step 12 in Embodiment 1.0.

Step 13: Network elements such as BSF, NEF, UDM, UDR or NRF trigger the control plane migration process.

The following takes PCF migration as an example.

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 and 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Quality of Service Flow Identification (QFI).

See Example 1.1 for the remaining steps.

Example 2: AF triggers PCF migration.

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

Step 14a: AF decides to perform PCF migration and sends a migration trigger request to NEF 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Quality of Service Flow Identification (QFI).

The rest of the process is the same as Example 1.

Implementation method 4 of this application: UPF migration

Please refer to Figure 13. The multi-modal service implementation method in this embodiment of the present application includes:

The following process follows step 12 in Example 1.0.

Step 1: SMF obtains the IP address of UPF 2 that carries the multi-modal service flow of UE 2. SMF hopes that the multi-modal service flow of UE 1 is carried by UPF 2.

Step 2: SMF decides UPF migration.

Step 3: SMF sends Nsmf_PDUSession_SMContextStatusNotify Request (the above-mentioned PDU session modification command) to AMF. AMF replies Nsmf_PDUSession_SMContextStatusNotify Response.

Since the multi-modal business flow is sent to a server under a data network (Data Network, DN) through UPF 2, then in this step, SMF assumes that it cannot serve the target data network access identifier (DN Access Identifier, DNAI), then SMF sends target DNAI to AMF, and AMF triggers an SMF reselection process.

If the SMF is already the only SMF of the multi-modal service flow group (that is, it controls the multi-modal service flows of UE 1 and UE 2 at the same time), then this step does not generate an SMF reselection process;

If the SMF is not the only SMF of the multi-modal service flow group (i.e., SMF 1 controls the multi-modal service flow of UE 1, and SMF 2 controls the multi-modal service flow of UE 2), then the AMF should select SMF 2, the SMF's For selection and migration, see Embodiment 2 above.

Step 4: SMF sends Namf_Communication_N1N2MessageTransfer to AMF. The message includes at least one of the following:

PDU Session ID (PDU Session ID);

N1 session management container (N1SM container).

Step 5: AMF sends the PDU session modification instruction (PDU session modification) to the UE. The purpose of this modification instruction is to replace the UPF that carries the UE's multi-modal service flow or PDU session and use UPF2 to carry it. This ensures that the same user plane is used to simultaneously carry multi-modal service flows belonging to the same multi-modal service flow group.

Step 6: The terminal confirms the PDU session modification request.

Step 7: Context update. That is, AMF sends the PDU Session Modification Command ACK (PDU Session Modification Command ACK) to SMF.

Step 8: The UE establishes a PDU session (new PDU session) with UPF 2 to carry multi-modal service flows;

During the establishment of this PDU session, SMF selects UPF 2 for the UE to carry the multi-modal service flow. This is achieved by using the same UPF to carry the multi-modal service flow of UE1 and UE2 at the same time. In addition, the PCF corresponding to the PDU session must also be the PCF of the same multi-modal service flow as UE 1 (that is, the same PCF described in the above embodiment).

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

For the multi-modal service implementation method provided by the embodiments of this application, the execution subject may be a multi-modal service implementation device. In the embodiments of this application, the multi-modal service implementation method executed by the multi-modal service implementation device is used as an example to illustrate the multi-modal service implementation device provided by the embodiments of this application.

Please refer to Figure 14. This embodiment of the present application also provides a multi-modal service implementation device 140, which includes:

The first sending module 141 is configured to send a migration request to a second communication device, where the migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the first terminal corresponding to the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used for the first communication device to request the first terminal corresponding to the first communication device and the third communication device corresponding to the first communication device. Two terminals provide coordinated core network control plane services; wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the first terminal and the second terminal respectively transmit multi-modal service flows. Flows belong to the same multimodal business 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 migration success or migration failure.

Optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service refers to using the same PCF to transmit multiple packets to the first terminal and the second terminal respectively. Modal business flow formulation policy and charging control PCC rules.

Session management policy association identification ID;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

or,

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

Optionally, the multi-modal service implementation device 140 also includes:

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

Session management context ID;

The ID or IP address of the second communication device;

or,

If the migration request is used by the first communication device to request 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 migration request In response to indicating successful migration, a session management context update request is sent to the SMF corresponding to the first terminal, and the session management context update request is used to update the IP address or identity of the PCF corresponding to the second terminal; the session The management context update request carries at least one of the following information:

Session management context ID;

The 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 The control plane service refers to using the same SMF to execute PCC rules for the multi-modal service flows transmitted respectively by the first terminal and the second terminal.

The session management context corresponding to the first terminal;

The N4 context corresponding to the first terminal.

or,

The session management context corresponding to the second terminal;

The N4 context corresponding to the second terminal.

Optionally, the multi-modal service implementation device 140 also includes:

The first update module is used for the migration request to request the second communication device to provide a collaborative core for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Network control plane services, and if the migration response indicates that the migration is successful, it will no longer provide control plane services to the first terminal as the control plane network element corresponding to the first terminal; or, if the migration request is for The first communication device requests 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, and the migration response indicates that the migration is successful, as The control plane network element corresponding to the second terminal provides control plane services for the second terminal.

Optionally, the first communication device and the second communication device are PCFs, and the multi-modal service implementation device 140 further includes: a first notification module, configured to request the second communication if the migration request is used. The device provides 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, and sends a first notification to the BSF, where the first notification is used to Instruct the BSF to release the binding relationship between the first terminal and the first communication device, and to bind the first terminal to the second communication device. Or, if the migration request is for the first communication device, the request is for the first terminal and the second communication device corresponding to the first communication device. The corresponding second terminal provides coordinated core network control plane services and sends a first notification to the BSF, where the first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device, Bind the second terminal to the first communication device.

Optionally, the first communication device and the second communication device are SMF, and the multi-modal service implementation device 140 further includes: a second notification module, configured to request the second communication if the migration request is used. The device provides 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, and sends a second notification to at least one of the following communication devices, The second notification is used to indicate that the SMF corresponding to the first terminal has changed:

AMF;

PCF;

UPF;

or,

If the migration request is used by the first communication device to request 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, communicate to the following At least one of the devices sends a second notification, the second notification is used to indicate that the SMF corresponding to the second terminal is changed:

AMF;

PCF;

UPF.

Optionally, the multi-modal service implementation device 140 also includes:

The second receiving module is used to receive the migration trigger request sent by the third communication device, and is used to instruct the first communication device to migrate the corresponding first terminal to the second communication device, and the second communication device provides the migration trigger request for the second communication device. The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the second communication device The corresponding second terminal is migrated to the first communication device, and the first communication device provides a coordinated core network for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Control plane services.

Optionally, if the migration trigger request is used to instruct the first communication device to migrate the corresponding first terminal to a second communication device, the second communication device is the one corresponding to the first communication device. The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, 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;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI.

or,

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI.

Optionally, the first communication device and the second communication device are PCFs, and the multi-modal service implementation device 140 further includes:

A verification module, used to verify whether the conditions for migration are met. The conditions include: the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow group;

The identification of the multi-modal service flow group;

Multimodal service provider identifier.

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;

Network Open Function NEF;

Unified data management UDM;

Network storage function NRF;

Unified data warehousing UDR;

Application function AF.

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

The multi-modal service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 4 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Please refer to Figure 15. This embodiment of the present application also provides a multi-modal service implementation device 150, which includes:

The first receiving module 151 is configured to receive a migration request sent by a first communication device, where the migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the second communication device. The second terminal corresponding to the device provides coordinated core network control plane services, or the migration request is used by the first communication device to request the first terminal and the second communication device corresponding to the first communication device. The corresponding second terminal provides coordinated core network control plane services; wherein the first terminal and the second terminal respectively transmit multi-modal service flows, and the first terminal and the second terminal respectively transmit multi-modal service flows. Modal business flows belong to the same multi-modal business flow group.

A first sending module, configured to send a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure.

Optionally, the first communication device and the second communication device are PCFs, and the coordinated core network control plane service refers to using the same PCF to transmit multiple packets to the first terminal and the second terminal respectively. Modal business flows formulate PCC rules.

Optionally, the migration request is used to request that the second communication device be the first communication device. The corresponding first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the migration request carries at least one of the following information:

Session management policy association identification ID;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

or,

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.

Optionally, the multi-modal service implementation device 150 also includes:

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

Session management context ID;

The ID or IP address of the second communication device.

Optionally, the first communication device and the second communication device are SMFs, and the coordinated core network control plane service refers to using the same SMF to transmit multiple packets to the first terminal and the second terminal respectively. Modal business flows execute PCC rules.

The session management context corresponding to the first terminal;

The N4 context corresponding to the first terminal.

The session management context corresponding to the second terminal;

The N4 context corresponding to the second terminal.

Optionally, the multi-modal service implementation device 150 also includes:

An update module configured to request the second communication device to provide a coordinated core network for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device if the migration request is used. control plane service, and the migration response indicates that the migration is successful, it is determined that the second communication device Be prepared to provide control plane services for the first terminal as the control plane network element corresponding to the first terminal;

or

If the migration request is used by the first communication device to request 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, and the The migration response indicates that the migration is successful, and it is determined that the second communication device no longer serves as the control plane network element corresponding to the second terminal to provide control plane services for the second terminal.

Optionally, the multi-modal service implementation device 150 also includes:

A third sending module, configured to request the second communication device to provide collaborative communication for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device if the migration request is used. The core network control plane service sends a first notification to the BSF. The first notification is used to instruct the BSF to release the binding relationship between the first terminal and the first communication device and connect the first terminal to the first communication device. The second communication device is bound. Or, if the migration request is for the first communication device to request 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 BSF sends a first notification, the first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device, and to bind the second terminal to the first communication device. .

The multi-modal service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Please refer to Figure 16. This embodiment of the present application also provides a multi-modal service implementation device 160, which includes:

The sending module 161 is used to send a migration trigger request to the first communication device, and is used to instruct the first communication device to migrate the corresponding first terminal to the second communication device, and the second communication device provides the migration trigger request for the first communication device. The first terminal corresponding to the communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the second terminal corresponding to the second communication device to The second terminal migrates to the first communication device, and the first communication device The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; wherein the first terminal and the second terminal respectively transmit multiple Modal service flows: the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow group.

Session management policy association ID;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI.

or,

If the migration trigger request is used to instruct 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 the The first terminal corresponding to the equipment and the second terminal corresponding to the second communication equipment provide coordinated core network control plane services; 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 second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

QFI.

SMF;

BSF;

NEF;

UDM;

NRF;

UDR;

AF.

Optionally, the third communication device is SMF; the multi-modal service implementation device 160 further includes:

an association module, configured to indicate that the first communication device will correspond if the migration trigger request is used to indicate The first terminal migrates to the second communication device, and the second communication device provides coordinated core network control for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Provide a comprehensive service, associating the session management context ID corresponding to the first terminal with the ID of the second communication device. Alternatively, if the migration trigger request is used to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device is the first communication device. The corresponding first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and associate the session management context ID corresponding to the second terminal with the ID of the first communication device. .

PCF;

BSF;

NEF;

UDM;

NRF;

UDR;

AF.

The multi-modal service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 6 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Please refer to Figure 17. This embodiment of the present application also provides a multi-modal service implementation device 170, which includes:

The first sending module 171 is configured to send a PDU session modification instruction to the first terminal. The multi-modal service implementation device 170 can provide coordinated core network control plane services for the first terminal and the second terminal. A terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow group;

The first selection module 172 is configured to select a second UPF to carry the multi-modal service flow of the first terminal after receiving the PDU session establishment request of the first terminal. The second UPF is used to carry the second UPF. Multi-modal service flow of the terminal.

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

Optionally, the multi-modal service implementation device 170 also includes:

The second selection module is configured to select a second PCF to formulate PCC rules for the first terminal after receiving the PDU session establishment request of the first terminal. The second PCF can provide the first terminal and the first terminal with PCC rules. The second terminal collaboratively provides a service strategy.

The multi-modal service implementation device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 7 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 18, this embodiment of the present application also provides a communication device 180, which includes a processor 181 and a memory 182. The memory 182 stores programs or instructions that can be run on the processor 181. When the program or instruction is executed by the processor 181, each step of the above-mentioned multi-modal service implementation method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, the details will not be described here.

An embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the communication interface is used to send a migration request to a second communication device, and the migration request is used to request the second communication device to be the The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services, or the migration request is used for the first communication device to request for the the first terminal and the second communication device corresponding to the first communication device The corresponding second terminal provides coordinated core network control plane services; receives a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure; wherein the first terminal and the The second terminal transmits multi-modal service flows respectively, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group. This communication device embodiment corresponds to the above-mentioned method embodiment described in Figure 4. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this communication device embodiment, and can achieve the same technical effect.

An embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the communication interface is used to receive a migration request sent by the first communication device, and the migration request is used to request the second communication device to be The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services, or the migration request for the first communication device is The first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; send a migration response to the first communication device, where the migration response is used to indicate The migration is successful or the migration fails; wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow. Modal business flow group. This communication device embodiment corresponds to the above-mentioned method embodiment described in Figure 5. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this communication device embodiment, and can achieve the same technical effect.

An embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the communication interface is used to send a migration trigger request to the first communication device to instruct the first communication device to transfer the corresponding first communication device to the first communication device. The terminal migrates to a second communication device, and the second communication device provides 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; Or, it is used 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 is the first terminal corresponding to the first communication device. The second terminal corresponding to the second communication device provides coordinated core network control plane services; wherein the first terminal and the second terminal transmit multi-modal service flows respectively, and the first terminal and the second terminal transmit multi-modal service flows respectively. The multi-modal service flows respectively transmitted by the second terminal belong to the same multi-modal service flow group. This communication device embodiment corresponds to the above-mentioned method embodiment described in Figure 6. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this communication device embodiment, and can achieve the same technical effect.

Embodiments of the present application also provide a communication device, including a processor and a communication interface, wherein the communication interface is used to send a PDU session modification instruction to the first terminal, and the communication device can be used for the first terminal and the second terminal. The terminal provides coordinated core network control plane services. The first terminal and the second terminal respectively transmit multi-modal service flows. The multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same A multi-modal service flow group; the processor is configured to select a second UPF to carry the multi-modal service flow of the first terminal after receiving the PDU session establishment request of the first terminal, and the third The second UPF is used to carry the multi-modal service flow of the second terminal. This communication device embodiment corresponds to the above-mentioned method embodiment described in FIG. 7 . Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this communication device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a communication device. As shown in FIG. 19 , the communication device 190 includes: a processor 191 , a network interface 192 and a memory 193 . Among them, the network interface 192 is, for example, a common public radio interface (CPRI). Specifically, the network side device 190 in the embodiment of the present application also includes: instructions or programs stored in the memory 193 and executable on the processor 191. The processor 191 calls the instructions or programs in the memory 193 to execute Figures 14, 15, The methods for executing each module shown in 16 or 17 achieve the same technical effect. To avoid repetition, they will not be repeated here.

Embodiments of the present application also provide a readable storage medium, the readable storage medium stores a program or instructions, and when the program or instructions are executed by a processor, each process of the above multi-modal service implementation method embodiment is implemented, and can achieve the same technical effect, so to avoid repetition, we will not repeat them here.

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

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above multi-modal service implementation method. Each process of the embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

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

The embodiment of the present application further provides a computer program/program product. The computer program/program product The product is stored in the storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above multi-modal service implementation method embodiment, and can achieve the same technical effect. To avoid duplication, no description is given here. Again.

An embodiment of the present application also provides a communication system, including: a first communication device and a second communication device. The first communication device can be used to perform the steps of the multi-modal service implementation method described in Figure 4 above, The second communication device may be used to perform the steps of the multi-modal service implementation method described in Figure 5 above.

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

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

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

Claims

A multi-modal business implementation method, including:

The first communication device sends a migration request to the second communication device. The migration request is used to request the second communication device to be the first terminal corresponding to the first communication device and the third terminal corresponding to the second communication device. The two terminals provide coordinated core network control plane services, or the migration request is used by the first communication device to request a first terminal corresponding to the first communication device and a second terminal corresponding to the second communication device. Provide coordinated core network control plane services;

The first communication device receives a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.
The method according to claim 1, wherein the first communication device and the second communication device are policy control functions (PCF), and the coordinated core network control plane service means: using the same PCF to provide the first terminal with Formulate policies and charging control PCC rules for the multi-modal service flows respectively transmitted to the second terminal.
The method of claim 2, wherein,

The migration request is used to request the second 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 migration request carries at least one of the following information:

Session management policy association identification ID;

The contract permanent identification of the first terminal or the Internet Protocol IP address of the first terminal;

The protocol data unit PDU session ID of the first terminal, wherein the PDU session corresponding to the PDU session ID carries multi-modal service flows;

Data network name DNN;

Single network slice selection auxiliary information S-NSSAI;

The radio access technology RAT type of the first terminal;

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

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

or,

The migration request is used by the first communication device to request 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 migration request contains at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the second terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.
The method of claim 2, wherein

The migration request is used to request the second 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. After receiving the 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 the SMF corresponding to the first terminal. The session management context update request is used to update the SMF corresponding to the first terminal. The IP address or identity of the PCF; the session management context update request carries at least one of the following information:

Session management context ID;

The ID or IP address of the second communication device;

or,

The migration request is used by the first communication device to request 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. After the communication device receives the migration response sent by the second communication device, it further includes:

If the migration response indicates that the migration is successful, the first communication device sends a session management context update request to the SMF corresponding to the second terminal. The session management context update request is used to update the SMF corresponding to the second terminal. The IP address or identity of the PCF; the session management context update request carries at least one of the following information:

Session management context ID;

The ID or IP address of the first communication device.
The method according to claim 1, wherein the first communication device and the second communication device are SMFs, and the coordinated core network control plane service means: using the same SMF to provide the first terminal and the The multi-modal service flows respectively transmitted by the second terminal execute PCC rules.
The method of claim 5, wherein,

The migration request is used to request the second 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 migration request carries at least one of the following information:

The session management context corresponding to the first terminal;

The N4 context corresponding to the first terminal;

or

The migration request is used by the first communication device to request 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 migration request contains at least one of the following information:

The session management context corresponding to the second terminal;

The N4 context corresponding to the second terminal.
The method according to claim 1, wherein after the first communication device receives the migration response sent by the second communication device, it further includes:

If the migration request is used to request the second 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, and The migration response indicates that the migration is successful, and the first communication device no longer serves as the control plane network element corresponding to the first terminal to provide control plane services for the first terminal;

or,

If the migration request is used by the first communication device to request 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, and the The migration response indicates that the migration is successful, and the first communication device serves as the control plane network element corresponding to the second terminal to provide control plane services for the second terminal.
The method according to claim 1, wherein the first communication device and the second communication device are PCFs, and after the first communication device receives the migration response sent by the second communication device, it further includes:

If the migration request is used to request the second 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, then The first communication device sends a first notification to the BSF, the first notification is used to instruct the BSF to release the binding relationship between the first terminal and the first communication device, and connect the first terminal to the first communication device. Second communication device binding;

or

If the migration request is used by the first communication device to request 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 device A communication device sends a first notification to the BSF. The first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device and connect the second terminal to the first communication device. Communication device binding.
The method according to claim 1, wherein the first communication device and the second communication device are SMFs, and after the first communication device receives the migration response sent by the second communication device, it further includes:

If the migration request is used to request the second 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, then The first communication device sends a second notification to at least one of the following communication devices, the The second notification is used to indicate that the SMF corresponding to the first terminal has changed:

AMF;

PCF;

UPF;

or

If the migration request is used by the first communication device to request 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 device A communication device sends a second notification to at least one of the following communication devices, where the second notification is used to indicate that the SMF corresponding to the second terminal is changed:

AMF;

PCF;

UPF.
The method according to claim 1, wherein before the first communication device sends the migration request to the second communication device, it further includes:

The first communication device receives a migration trigger request sent by a third communication device to instruct the first communication device to migrate the corresponding first terminal to a second communication device, and the second communication device provides the migration trigger request for the third communication device. The first terminal corresponding to a communication device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to configure the second terminal corresponding to the second communication device. The second terminal is migrated to the first communication device, and the first communication device provides a collaborative core for the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Network control plane services.
The method of claim 10, wherein:

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 the first terminal corresponding to the first communication device and the The second terminal corresponding to the second communication device provides coordinated core network control plane services, and the migration trigger request carries at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the first terminal or the IP address of the first terminal;

The PDU session ID of the first terminal, where the PDU corresponding to the PDU session ID will The phone carries multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Control plane information of the multi-modal service flow of the first terminal or the second terminal;

Quality of Service Flow Identifier QFI;

or;

If the migration trigger request is used to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device is the one corresponding to the first communication device. The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; the migration trigger request carries at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the second terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Control plane information of the multi-modal service flow of the first terminal or the second terminal;

QFI.
The method according to claim 10, wherein the first communication device and the second communication device are PCFs, and after the first communication device receives the migration trigger request sent by the third communication device, it further includes:

The first communication device verifies whether the conditions for migration are met, and the conditions include: the multi-modal service flows respectively transmitted by the first terminal and the second terminal belong to the same multi-modal service flow group;

Wherein, when at least one of the following information of the multi-modal service flows respectively transmitted by the first terminal and the second terminal is the same, they belong to the same multi-modal service flow group:

The identification of the multi-modal service flow group;

Multimodal service provider identifier.
The method of claim 10, wherein 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;

Network Open Function NEF;

Unified data management UDM;

Network storage function NRF;

Unified data warehousing UDR;

Application function AF.
The method according to claim 10, wherein 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.
A multi-modal business implementation method, including:

The second communication device receives a migration request sent by the first communication device. The migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the first terminal corresponding to the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by 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. The terminal provides coordinated core network control plane services;

The second communication device sends a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.
The method according to claim 15, wherein the first communication device and the second communication device are PCFs, and the coordinated core network control plane service means: using the same PCF to provide the first terminal and the The second terminal formulates PCC rules for the multi-modal service flows transmitted respectively.
The method of claim 16, wherein:

The migration request is used to request the second 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 migration request carries at least one of the following information:

Session management policy association identification ID;

The permanent subscription identification of the first terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

or,

The migration request is used by the first communication device to request 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 migration request contains at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the second terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows.
The method of claim 16, wherein:

The migration request is used to request the second 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. After the second communication device sends a migration response to the first communication device, it 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 to the first terminal. The session management context update request is used to update the SMF corresponding to the first terminal. The IP address or identity of the PCF; the session management context update request carries the following information:

Session management context ID;

The ID or IP address of the second communication device;

or,

The migration request is used by the first communication device to request 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. After the communication device sends the migration response to the first communication device, it 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 to the second terminal. The session management context update request is used to update the session management context corresponding to the second terminal. The IP address or identity of the PCF; the session management context update request carries the following information:

Session management context ID;

The ID or IP address of the first communication device.
The method according to claim 15, wherein the first communication device and the second communication device are SMFs, and the coordinated core network control plane service means: using the same SMF to provide the first terminal and the The multi-modal service flows respectively transmitted by the second terminal execute PCC rules.
The method of claim 19, wherein:

The migration request is used to request the second 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 migration request carries at least one of the following information:

The session management context corresponding to the first terminal;

The N4 context corresponding to the first terminal;

or,

The migration request is used by the first communication device to request 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 migration request contains at least one of the following information:

The session management context corresponding to the second terminal;

The N4 context corresponding to the second terminal.
The method according to claim 15, wherein after the second communication device sends a migration response to the first communication device, it further includes:

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

or,

If the migration request is used by the first communication device to request 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, and the The migration response indicates that the migration is successful, and the second communication device no longer serves as the control plane network element corresponding to the second terminal to provide control plane services for the second terminal.
The method according to claim 15, wherein the first communication device and the second communication device are PCFs, and after the second communication device sends a migration response to the first communication device, it further includes:

If the migration request is used to request the second 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, then The second communication device sends a first notification to the BSF, the first notification is used to instruct the BSF to release the binding relationship between the first terminal and the first communication device, and connect the first terminal to the first communication device. Second communication device binding;

or

If the migration request is used by the first communication device to request 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 device The second communication device sends a first notification to the BSF. The first notification is used to instruct the BSF to release the binding relationship between the second terminal and the second communication device and connect the second terminal to the first communication device. Communication device binding.
A multi-modal business implementation method, including:

The third communication device sends a migration trigger request to the first communication device to instruct the first communication device to migrate the corresponding first terminal to the second communication device. The second communication device is the first communication device. The corresponding first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the second terminal corresponding to the second communication device to The terminal migrates to the first communication device, and the first communication device provides 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;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.
The method of claim 23, wherein:

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 the first terminal corresponding to the first communication device and the The second terminal corresponding to the second communication device provides coordinated core network control plane services, and the migration trigger request carries at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the first terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the first terminal;

SMF ID corresponding to the first terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Control plane information of the multi-modal service flow of the first terminal or the second terminal;

QFI;

or,

If the migration trigger request is used to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device is the one corresponding to the first communication device. The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services; the migration trigger request carries at least one of the following information:

Session management policy association ID;

The permanent subscription identification of the second terminal or the 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 multi-modal service flows;

DNN;

S-NSSAI;

The RAT type of the second terminal;

SMF ID corresponding to the second terminal;

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

Multimodal business flow ID;

Multimodal business flow group ID;

Multimodal service provider ID;

PCC rules corresponding to multi-modal business flows;

Control plane information of the multi-modal service flow of the first terminal or the second terminal;

QFI.
The method of claim 23, wherein 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.
The method according to claim 25, wherein the third communication device is an SMF; after the third communication device sends a migration trigger request to the first communication device, it further includes:

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 the first terminal corresponding to the first communication device and the The second terminal corresponding to the second communication device provides collaborative core network control plane services, 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 to instruct the first communication device to migrate the second terminal corresponding to the second communication device to the first communication device, the first communication device is the one corresponding to the first communication device. The first terminal and the second terminal corresponding to the second communication device provide coordinated core network control plane services, and the third communication device combines the session management context ID corresponding to the second terminal with the first communication device. Device ID association.
The method of claim 23, wherein 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.
A multi-modal business implementation method, including:

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

After receiving the PDU session establishment request from the first terminal, the SMF selects a second UPF to carry the multi-modal service flow of the first terminal, and the second UPF carries the multi-modal service flow of the second terminal. .
The method according to claim 28, wherein sending the PDU session modification instruction by the SMF to the first terminal includes:

The SMF sends the PDU session modification instruction to the AMF, and the AMF forwards the PDU session modification instruction to the first terminal.
The method of claim 28, further comprising:

After receiving the PDU session establishment request from the first terminal, the SMF selects the second The PCF formulates PCC rules for the first terminal, and the second PCF can collaboratively provide service policies for the first terminal and the second terminal.
A multi-modal service implementation device, including:

A first sending module, configured to send a migration request to a second communication device, where the migration request is used to request that the second communication device be the first terminal corresponding to the first communication device and the first terminal corresponding to the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by the first communication device to request to provide the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Collaborative core network control plane services;

A first receiving module configured to receive a migration response sent by the second communication device, where the migration response is used to indicate migration success or migration failure;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group. .
A multi-modal service implementation device, including:

The first receiving module is configured to receive a migration request sent by the first communication device, where the migration request is used to request the second communication device to be the first terminal corresponding to the first communication device and the second communication device. The second terminal provides coordinated core network control plane services, or the migration request is used by 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. Provide coordinated core network control plane services;

A first sending module, configured to send a migration response to the first communication device, where the migration response is used to indicate migration success or migration failure;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.
A multi-modal service implementation device, including:

A sending module, configured to send a migration trigger request to the first communication device to instruct the first communication device to migrate the corresponding first terminal to a second communication device, and the second communication device provides the first communication The first terminal corresponding to the device and the second terminal corresponding to the second communication device provide coordinated core network control plane services; or, used to instruct the first communication device to use the third terminal corresponding to the second communication device. The two terminals migrate to the first communication device, and the first communication device provides the first terminal corresponding to the first communication device and the second terminal corresponding to the second communication device. Collaborative core network control plane services;

Wherein, the first terminal and the second terminal respectively transmit multi-modal service flows, and the multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group.
A multi-modal service implementation device, including:

The first sending module is configured to send a PDU session modification instruction to the first terminal. The multi-modal service implementation device can provide coordinated core network control plane services for the first terminal and the second terminal. The first terminal The multi-modal service flows transmitted by the first terminal and the second terminal respectively belong to the same multi-modal service flow group;

A first selection module, configured to select a second UPF to carry the multi-modal service flow of the first terminal after receiving the PDU session establishment request of the first terminal, and the second UPF carries the multi-modal service flow of the second terminal. Modal business flow.
A communication device, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the implementation of any one of claims 1 to 14 is achieved. The steps of the multi-modal service implementation method, or when the program or instruction is executed by the processor, the steps of the multi-modal service implementation method according to any one of claims 15 to 22 are implemented, or, When the program or instructions are executed by the processor, the steps of the multi-modal service implementation method according to any one of claims 23 to 27 are implemented; or, when the program or instructions are executed by the processor, the steps of the multi-modal service implementation method are implemented as follows: The steps of the multi-modal service implementation method described in any one of claims 28 to 30.
A readable storage medium storing programs or instructions on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the multi-modal service implementation method as described in any one of claims 1 to 14 are implemented. , or, implement the steps of the multi-modal service implementation method as described in any one of claims 15 to 22, or implement the steps of the multi-modal service implementation method as described in any one of claims 23 to 27, or , the steps of implementing the multi-modal service implementation method as described in any one of claims 28 to 30.