WO2024061086A1

WO2024061086A1 - Communication method and apparatus, and device

Info

Publication number: WO2024061086A1
Application number: PCT/CN2023/118678
Authority: WO
Inventors: 程思涵; 吴晓波; 崇卫微
Original assignee: 维沃移动通信有限公司
Priority date: 2022-09-21
Filing date: 2023-09-14
Publication date: 2024-03-28
Also published as: CN117793811A

Abstract

The present application relates to the technical field of communications, and discloses a communication method and apparatus, and a device. The communication method in embodiments of the present application comprises: when a terminal moves from an Nth generation mobile communication system to an Mth generation mobile communication system, a first core network node receives context information of the terminal sent by a second core network node, wherein the context information comprises a first value of a target parameter of a first bearer of the terminal; when it is determined that the first value of the target parameter is inconsistent with a second value of the target parameter that can be supported under the Mth generation mobile communication system, the first core network node carries out a movement operation for the terminal according to the first value of the target parameter, wherein N is greater than M, the first core network node is a core network node of the Mth generation mobile communication system, and the second core network node is a core network node of the Nth generation mobile communication system.

Description

Communication methods, devices and equipment

Cross-references to related applications

This application claims priority to Chinese Patent Application No. 202211153606.X filed in China on September 21, 2022, the entire content of which is incorporated herein by reference.

Technical field

This application belongs to the field of communication technology, and specifically relates to a communication method, device and equipment.

Background technique

With the commercialization of the ^5th Generation (5G), it can bring better services to users. For example, Voice over New Radio (VoNR) can support higher transmission rates, such as VoNR. The guaranteed bit rate (Guaranteed Bit Rate, GBR) or maximum bit rate (Maximum Bit Rate, MBR) of supported voice is 512kbps.

Voice over Long Term Evolution (VoLTE) belongs to the traditional ^4th Generation (4G) voice technology, and the maximum transmission rate it supports is lower than VoNR. For example, the guaranteed voice rate supported by VoLTE is GBR or MBR is 128kbps.

A user has an existing VoNR call in 5G. When the 5G signal deteriorates and needs to be switched or redirected to 4G, the 4G network does not support the 512kbps rate and fails to switch to 4G or redirect to 4G. This ultimately causes the user to drop the call and affects the user experience.

Contents of the invention

Embodiments of the present application provide a communication method, device and equipment to solve the call drop problem caused by a terminal switching to a network with a lower transmission rate than the previously connected network.

In the first aspect, a communication method is provided, including:

When the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, the first core network node receives context information of the terminal sent by the second core network node, and the context information includes the first context information of the terminal. The first value of the target parameter carried;

Determining the first value of the target parameter and what can be supported by the Mth generation mobile communication system If the second value of the target parameter is inconsistent, the first core network node performs a mobile operation for the terminal according to the first value of the target parameter;

Wherein, N is greater than M, the first core network node is the core network node of the M-th generation mobile communication system, and the second core network node is the core network node of the N-th generation mobile communication system.

In a second aspect, a communication device is provided, applied to a first core network node, including:

The first receiving module is configured to receive context information of the terminal sent by the second core network node when the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, where the context information includes the context information of the terminal. the first value of the target parameter of the first bearer;

Execution module, configured to execute the target parameter according to the first value of the target parameter when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system. Mobile operation of the terminal;

Wherein, N is greater than M, the first core network node is a core network node of an Mth generation mobile communication system, and the second core network node is a core network node of an Nth generation mobile communication system.

In the third aspect, a communication method is provided, including:

The third core network node receives the first information sent by the first core network node;

The first information is used to indicate that the third core network node transmits user plane data based on the first value of the target parameter of the first bearer of the terminal. The first information is that the first core network node determines whether When the first value of the target parameter of the first bearer of the terminal is inconsistent with the second value of the target parameter that can be supported under the M-th generation mobile communication system, perform the operation for the terminal according to the first value of the target parameter. Sent under mobile operation; the first core network node is the core network node of the Mth generation mobile communication system.

In the fourth aspect, a communication device is provided, applied to a third core network node, including:

a second receiving module, configured to receive the first information sent by the first core network node;

The fifth aspect provides a communication method, including:

The access network node receives the second information sent by the first core network node;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer of the terminal; the second information is when the first core network node determines that the terminal When the first value of the target parameter of the first bearer is inconsistent with the second value of the target parameter that can be supported under the Mth generation mobile communication system, perform a mobile operation for the terminal according to the first value of the target parameter. The first core network node is the core network node of the Mth generation mobile communication system.

In a sixth aspect, a communication device is provided, applied to an access network node, including:

The third receiving module is used to receive the second information sent by the first core network node;

In a seventh aspect, a communication device is provided. The communication device is a first core network node and includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are When executed by the processor, the steps of the method described in the first aspect are implemented.

In an eighth aspect, a communication device is provided. The communication device is a first core network node and includes a processor and a communication interface, wherein the communication interface is used when the terminal moves from the Nth generation mobile communication system to the Mth generation. In the case of a mobile communication system, receiving context information of the terminal sent by the second core network node, where the context information includes a first value of a target parameter of a first bearer of the terminal;

The processor is configured to, when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the M-th generation mobile communication system, execute a method based on the first value of the target parameter. Mobile operation of the terminal;

In a ninth aspect, a communication device is provided, the communication device being a third core network node, comprising: A processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

In a tenth aspect, a communication device is provided. The communication device is a third core network node and includes a processor and a communication interface, wherein the communication interface is used to receive the first information sent by the first core network node;

The first information is used to instruct the third core network node to transmit user plane data for the terminal based on the first value of the target parameter of the first bearer of the terminal. The first information is sent by the first core network node when it is determined that the first value of the target parameter of the first bearer of the terminal is inconsistent with the second value of the target parameter supported under the Mth generation mobile communication system, and the first core network node performs a mobile operation for the terminal according to the first value of the target parameter; the first core network node is a core network node of the Mth generation mobile communication system.

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

In a twelfth aspect, a communication device is provided, the communication device being an access network node, comprising a processor and a communication interface, wherein the communication interface is used to receive second information sent by a first core network node;

In a thirteenth aspect, a communication system is provided, including: a first core network node, a third core network node and an access network node. The first core network node can be used to perform the communication method as described in the first aspect. The third core network node may be configured to perform the steps of the communication method as described in the third aspect, and the access network node may be configured to perform the steps of the communication method as described in the fifth aspect.

In a fourteenth 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 third aspect or the fifth aspect is implemented. The steps of the method described in this aspect.

In a fifteenth 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 third aspect. aspect or the method described in the fifth aspect.

In a sixteenth 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 third aspect or the fifth aspect.

In the embodiment of the present application, when the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, the first core network node receives the target parameter of the first bearer of the terminal sent by the second core network node. When it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system, the first core network node determines that the first value of the target parameter is inconsistent with the first value of the target parameter. The first value performs a mobile operation for the terminal to solve the problem of call drops caused when the terminal switches to a network with a lower transmission rate than the previously connected network. This method ensures the reliability of terminal communication.

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 one of the flow diagrams of the communication method according to the embodiment of the present application;

Figure 3 is a schematic diagram of the UE handover process from 5G to 4G;

Figure 4 is a second schematic flowchart of the communication method according to the embodiment of the present application;

Figure 5 is a third schematic flowchart of the communication method according to the embodiment of the present application;

Figure 6 is one of the module schematic diagrams of the communication device according to the embodiment of the present application;

Figure 7 is a schematic structural diagram of a core network node in an embodiment of the present application;

Figure 8 is the second module schematic diagram of the communication device according to the embodiment of the present application;

Figure 9 is the third module schematic diagram of the communication device according to the embodiment of the present application;

Figure 10 is a schematic structural diagram of an access network node according to an embodiment of the present application;

Figure 11 is a schematic structural 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 indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship. The term "instruction" in the description and claims of this application can be either an explicit instruction or an implicit instruction. Among them, explicit instructions can be understood as the sender clearly informs the receiver of the operations or request results that need to be performed in the instructions sent; implicit instructions can be understood as the receiver makes judgments based on the instructions sent by the sender, and based on the judgment The result determines the action that needs to be performed or the result of the request.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the ^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. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), laptop computer (Laptop Computer), also known as notebook computer, personal digital assistant (Personal Digital Assistant, PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet Device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robot, wearable device (Wearable Device), vehicle user equipment (VUE), pedestrian Terminal side (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 (PC), teller machines or self-service machines, etc. Equipment, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, Smart clothing, etc. In addition to the above terminal equipment, it may also be a chip within the terminal, such as a modem chip or a system on chip (SoC). It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless device. access network unit. Access network equipment may include base stations, Wireless Local Area Networks (WLAN) access points or Wireless Fidelity (WiFi) nodes, etc. The base station may be called Node B, Evolved Node B (eNB), Access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home Evolved B-node, Transmitting Receiving Point (TRP) or some other suitable 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 this article In the application embodiment, the base station in the NR system is only introduced as an example, and the specific type of the base station is not limited. 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 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 communication method, apparatus and equipment provided by the embodiments of the present application will be described in detail below through some embodiments and application scenarios in conjunction with the accompanying drawings.

As shown in Figure 2, this embodiment of the present application provides a communication method, including:

Step 201: When the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, the first core network node receives the context information of the terminal sent by the second core network node. The context information includes the terminal. the first value of the target parameter carried by the first;

Step 202: When it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system, the first core network node The first value performs a movement operation for the terminal;

It should be noted that when the first core network node performs a mobile operation for the terminal according to the first value of the target parameter, it can be understood that the first core network node accepts the first value of the target parameter and uses the target The first value of the parameter performs a moving operation (ie, redirection or handover); the first core network node accepting the target parameter can be understood as the first core network node not rejecting the first value of the target parameter.

Optionally, the first core network node in the embodiment of this application is a Mobility Management Entity (MME); the second core network node is an Access and Mobility Management Function (AMF).

Optionally, in an embodiment of the present application, the target parameters include at least one of the following:

Maximum Bit Rate (MBR);

Guaranteed Bit Rate (GBR).

Optionally, in an embodiment of the present application, the target service includes at least one of the following:

Voice service;

Video business.

Optionally, the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system. It can be understood that the first value of the target parameter is greater than the Mth generation mobile communication system. The second value of the target parameter that can be supported by the mobile communication system. For example, the first value of the target parameter (GBR or MBR parameter) is 512kbps; the second value of the target parameter supported by the M-th generation mobile communication system is 128kbps. In this case, the two parameters are considered to be inconsistent.

Optionally, the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system. It can also be understood that the first value of the target parameter is inconsistent with the Mth generation mobile communication system. The second value of the target parameter supported by the mobile communication system does not match.

Optionally, the first core network node accepts the first value of the target parameter, which can be understood as temporarily accepting the first value of the target parameter. For example, after the end of this call, the temporary acceptance is terminated, that is, the mobile operation of the terminal is no longer performed based on the first value of the target parameter; or, after the terminal moves again from the M-th generation mobile communication system to the N-th generation mobile communication system When , the temporary acceptance is terminated, that is, the mobile operation of the terminal is no longer performed based on the first value of the target parameter.

It should be noted that by first obtaining the first value of the target parameter of the first bearer of the terminal under the Nth generation mobile communication system, the first value of the target parameter of the first bearer is consistent with the first value that can be supported under the Mth generation mobile communication system. When the second value of the target parameter is inconsistent, the originally used value is accepted to solve the problem of call drops caused when the terminal switches to a network with a lower transmission rate than the previously connected network, thereby ensuring the reliability of terminal communication.

It should be noted that the embodiments of the present application can be applied to the movement of terminals from any high version communication system to a low version communication system. Preferably, the Nth generation mobile communication system is the 5th generation mobile communication system (i.e. 5G), and the Mth The first generation mobile communication system is the 4th generation mobile communication system (i.e. 4G); for example, the GBR of a terminal when performing voice services in 5G is 512kbps. When moving to 4G, the GBR that 4G can support is 218kbps. According to the original implementation process , the MME will deny terminal access, but in the embodiment of this application, the MME accepts the GBR when the terminal performs voice services in 5G, that is, the terminal can also use 512kbps GBR for data transmission of voice services in 4G.

Optionally, in another embodiment of the present application, the terminal is moved from the Nth generation mobile communication system to the Mth generation mobile communication system, including at least one of the following:

A11. The terminal switches from the Nth generation mobile communication system to the Mth generation mobile communication system;

It should be noted that the terminal is switched to the M-generation mobile communication system in the connected state, that is, the terminal first receives the switching message sent by the access network node under the N-generation mobile communication system, and then switches based on the switching message. Connect to the access network node under the M-generation mobile communication system. Optionally, the handover message may be a handover command message.

A12. The terminal is redirected from the Nth generation mobile communication system to the Mth generation mobile communication system;

It should be noted that the terminal is redirected to the M-generation mobile communication system in the connected state, that is, the terminal first receives the redirection message sent by the access network node under the N-generation mobile communication system, and then based on the redirection The message switching is connected to the access network node under the M-generation mobile communication system. Optionally, the redirection message may be a Radio Resource Control (RRC) connection release message carrying a redirection indication.

Optionally, in another embodiment of the present application, the first core network node performs a mobile operation for the terminal according to the first value of the target parameter, including:

If the service used for transmission by the first bearer is a target service, the first core network node performs a mobile operation for the terminal according to the first value of the target parameter.

That is to say, at this time, it can be understood that when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported under the Mth generation mobile communication system, and the first bearer is used for transmission, When the service is a target service, the first core network node performs a mobile operation for the terminal according to the first value of the target parameter.

Optionally, in another embodiment of the present application, the method for obtaining services used for transmission by the first bearer includes:

The first core network node determines the service used for transmission by the first bearer according to the QoS parameter corresponding to the first bearer.

Optionally, in another embodiment of the present application, the first core network node determines the implementation method of the service used for transmission by the first bearer according to the QoS parameters corresponding to the first bearer, including:

Determine the service used for transmission by the first bearer according to the QoS Class Identifier (QCI) of the QoS parameter;

Wherein, when the QoS level identifier is a first value, the service used for transmission by the first bearer is a voice service; or,

When the QoS level identifier is the second value, the service used for transmission by the first bearer is a video service;

The first value is different from the second value.

It should be noted that the first value and the second value may be configured on the network side, pre-configured in the terminal, or agreed upon by a protocol.

For example, when the QoS level identifier is 1, the service used for transmission by the first bearer is the voice service; when the QoS level identifier is 2, the service used for transmission by the first bearer is the video service.

Optionally, in an embodiment of the present application, the first bearer may be a 5G Quality of Service flow (QoS) flow (flow) or a 4G Evolved Packet System (EPS) bearer (bearer) .

For example, when the first bearer is used to transmit voice services, the first bearer is a bearer with a service quality level of 1, for example, a QoS flow with a 5G service quality identifier (5G QoS Identifier, 5QI) = 1, or an EPS bearer with QCI = 1.

The voice service in this application may also be referred to as voice call service, and the video service may also be referred to as video call service.

For example, under 4G, the terminal uses the EPS bearer to transmit the terminal's voice service. The GBR supported under 4G is 128kbps, and the GBR used by the terminal in 5G is 512kbps. When the terminal moves from 5G to 4G, due to the difference between 4G and 5G The GBR used in 5G is different. At this time, the MME accepts the GBR used in 5G, which is 512kbps. Both parties in subsequent communications use 512kbps for voice service transmission.

Optionally, in another embodiment of the present application, the method further includes:

The first core network node sends the first information to the third core network node;

Wherein, the first information is used to instruct the third core network node to transmit user plane data to the terminal based on the first value of the target parameter of the first bearer.

It should be noted that the third core network node mentioned in the embodiment of this application refers to the Serving GateWay (SGW). Optionally, the third core network node is used to transmit user plane data for the terminal.

It can be understood that the first information is used to instruct the third core network node to accept the first value of the target parameter of the first bearer, and to transmit user plane data to the terminal based on the first value of the target parameter.

It should also be noted here that the first core network node will transmit the first value of the target parameter to the third core network node. After receiving the first information, the third core network node will know that it needs to use the third value of the target parameter. A value is used to transmit user plane data.

Optionally, the first information may be explicit indication information, used to instruct the third core network node to accept the first value of the target parameter of the first bearer; it may also be non-explicit indication information, in which the third core network node accepts the first value of the target parameter of the first bearer. The core network node determines by itself to accept the first value of the target parameter of the first bearer according to receiving the first information.

The first core network node sends the second information to the access network node under the M-th generation mobile communication system;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer.

It can be understood that the second information is used to instruct the access network node to accept the first value of the target parameter of the first bearer, and perform data transmission of the terminal based on the first value of the target parameter.

Optionally, the second information may be clear indication information, used to instruct the access network node to accept the first value of the target parameter of the first bearer; it may also be non-explicit indication information, so The access network node determines by itself to accept the first value of the target parameter of the first bearer based on receiving the second information.

It should also be noted here that the first core network node will transmit the first value of the target parameter to the access network node under the M-th generation mobile communication system. The access network node under the M-th generation mobile communication system will receive the After receiving the second information, it is known that the first value of the target parameter needs to be used to transmit user plane data.

The specific applications of the above embodiments of the present application are described in detail below.

Application situation 1.

As shown in Figure 3, the specific steps are as follows:

Step S301: The 5G base station Next Generation Radio Access Network (NG RAN) performs the measurement based on the measurement results reported by the user equipment (User Equipment, UE). After determining to handover the UE to 4G, the NG RAN sends a handover instruction to the AMF currently serving the UE;

Step S302, the AMF requests the UE's protocol data unit from the network element (i.e. SMF+PGW-C) that implements the control plane packet data network (Packet Data Network, PDN) gateway (PDN GateWay, PGW) and SMF while providing services to the UE. (Protocol Data Unit, PDU) Context information of the PDN connection corresponding to the session.

It should be noted that if the UE is in a roaming state, it is sent to the SMF+PGW-C by visiting the SMF that provides services for the UE in the Visited Public Land Mobile Network (VPLMN).

Note: If the UE is in roaming state, SMF+PGW-C can be located in the UE's local public land mobile network (Home Public Land Mobile Network, HPLMN).

This step S302 specifically includes:

Step S302a, AMF sends a context information request for the PDN connection corresponding to the PDU session to SMF+PGW-C;

Step S302b, SMF+PGW-C implements session modification with the network element that implements both user plane PGW and UPF (i.e., PGW-U+UPF);

Step S302c: SMF+PGW-C sends the context information of the PDN connection corresponding to the UE's PDU session to the AMF.

Step S303, the AMF sends a forward relocation request (Forward Relocation Request) to the MME, which contains the context information of the UE, including the information of the PDN connection corresponding to the UE's PDU session;

The PDN connection information contains the target parameters of the EPS bearer, for example, the GBR or MBR of the EPS bearer.

Optionally, after receiving the Forward Relocation Request sent by the AMF, the MME determines whether the first value of the target parameter of the EPS bearer is consistent with the Evolved Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (Evolved UMTS). If the second value of the target parameter supported by Terrestrial Radio Access Network (E-UTRAN) is inconsistent and the EPS bearer carries a voice service, the MME accepts the first value of the target parameter. Target parameters for dedicated bearers used to transport non-specific services (e.g. non-voice services) If the value exceeds the acceptable value, the MME directly refuses to establish a dedicated bearer for the non-specific service, that is, the non-specific service is directly rejected.

Step S304, the MME sends a create session request to the Serving Gateway (SGW) to create a corresponding transmission tunnel for the EPS bearer;

Optionally, the session creation request carries first information to instruct the SGW to accept the first value of the target parameter of the EPS bearer, so that the SGW uses the first value of the target parameter to transmit user plane data to the terminal to avoid rejection by the SGW. As a result, the voice bearer establishment fails.

Specifically, the first information is carried in the parameter information of the EPS bearer.

Step S305, SGW sends a create session response to MME;

Step S306, the MME sends a handover request to the 4G base station E-UTRAN, carrying the target parameters of the EPS bearer to be established in the handover request;

Optionally, the handover request carries second information to instruct the access network node to accept the first value of the target parameter of the first bearer, so that E-UTRAN uses the first value of the target parameter to perform terminal switching. Data transmission; avoid voice bearer establishment failure caused by E-UTRAN rejection.

Specifically, the second information is carried in the parameter information of the EPS bearer.

Step S307, E-UTRAN allocates wireless resources and transmission tunnel resources to the EPS bearer to be established, and sends them to the MME;

Among them, wireless resources include random access resources and data radio bearer (Data Radio Bearer, DRB) resources.

Note: Each EPS bearer corresponds to one DRB.

Step S308, MME and SGW exchange the transmission tunnel between E-UTRAN and SGW;

Specifically, the MME sends the transmission tunnel resources to the SGW, requesting the establishment of a transmission tunnel between E-UTRAN and the SGW, and the SGW returns a transmission tunnel response to the MME.

Step S309: The MME sends the radio resources allocated by E-UTRAN to the user to the AMF;

Step S310, if the UE's data cached in the NG RAN has a higher priority, the AMF notifies SMF+PGW-C to establish a forwarding tunnel to forward the UE's data from the NG RAN to the E-URTAN;

This step S310 specifically includes:

Step S310a, AMF sends a forwarding tunnel establishment request to SMF+PGW-C;

Step S310b, SMF+PGW-C and PGW-U+UPF implement session modification;

Step S310c: SMF+PGW-C sends a tunnel establishment response to AMF.

Step S311, the AMF sends the wireless resources allocated by E-UTRAN to the user to the terminal;

For example, sent via a handover message (e.g., handover command).

This step S311 specifically includes:

Step S311a, AMF sends the radio resources allocated by E-UTRAN to the user to NG-RAN;

Step S311b, NG RAN sends the radio resources allocated to the user by E-UTRAN to the UE.

Step S312: The UE accesses E-UTRAN according to the radio resources allocated by E-UTRAN, and replies with a handover completion message.

It should be noted that in at least one embodiment of the present application, when the terminal is switching from 5G to 4G, after the MME receives the handover request, it determines that the GBR of a dedicated bearer exceeds the acceptable value, and the dedicated bearer is used to transmit voice During the service, the MME accepts the GBR and sends the GBR value to the base station and SGW, which can ensure that the service is not interrupted after the terminal moves and ensures communication reliability.

As shown in Figure 4, this embodiment of the present application provides a communication method, including:

Step 401: The third core network node receives the first information sent by the first core network node;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Optionally, the third core network node is a serving gateway SGW.

It should be noted that all the descriptions about the third core network node in the above embodiments are applicable to the embodiment of the communication method applied to the third core network node, and the same technical effect can be achieved. This is not the case here. Again.

As shown in Figure 5, this embodiment of the present application provides a communication method, including:

Step 501: The access network node receives the second information sent by the first core network node;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

It should be noted that all the descriptions about access network nodes in the above embodiments are applicable to the embodiments of the communication method applied to access network nodes, and the same technical effects can be achieved, and will not be described again here. .

For the communication method provided by the embodiments of the present application, the execution subject may be a communication device. In the embodiment of the present application, a communication device performing a communication method is used as an example to describe the communication device provided by the embodiment of the present application.

As shown in FIG6 , a communication device 600 in an embodiment of the present application is applied to a first core network node, including:

The first receiving module 601 is configured to receive context information of the terminal sent by the second core network node when the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, where the context information includes the terminal the first value of the target parameter carried by the first;

Execution module 602, configured to execute according to the first value of the target parameter when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system. Mobile operations for the terminal;

Optionally, the execution module 602 is used to:

If the service used for transmission by the first bearer is a target service, a mobile operation for the terminal is performed according to the first value of the target parameter.

Optionally, the method for obtaining services used for transmission by the first bearer includes:

According to the quality of service QoS parameters corresponding to the first bearer, the service used for transmission by the first bearer is determined.

Optionally, determining an implementation manner of services used by the first bearer for transmission based on the quality of service QoS parameters corresponding to the first bearer includes:

Determine the service used for transmission by the first bearer according to the QoS level identifier of the QoS parameter;

The first value is different from the second value.

Optionally, the device also includes:

The first sending module is used to send the first information to the third core network node;

Optionally, the third core network node is a serving gateway SGW.

Optionally, the device also includes:

A second sending module, configured to send second information to the access network node under the Mth generation mobile communication system;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Optionally, the target business includes at least one of the following:

Voice service;

Video business.

Optionally, the terminal is moved from the Nth generation mobile communication system to the Mth generation mobile communication system, including at least one of the following:

The terminal is switched from the Nth generation mobile communication system to the Mth generation mobile communication system;

The terminal is redirected from the Nth generation mobile communication system to the Mth generation mobile communication system.

Optionally, the Nth generation mobile communication system is a 5th generation mobile communication system, and the Mth generation mobile communication system is a 4th generation mobile communication system; and/or

The first core network node is a mobility management entity MME, and the second core network node is an access and mobility management function AMF.

It should be noted that this device embodiment corresponds to the above-mentioned method, and all implementation methods in the above-mentioned method embodiment are applicable to this device embodiment, and the same technical effect can be achieved.

The communication device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, details will not be described here.

An embodiment of the present application also provides a communication device. The communication device is a first core network node and includes a processor and a communication interface. The communication interface is used when the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system. In the case of a communication system, receiving context information of the terminal sent by the second core network node, where the context information includes a first value of a target parameter of a first bearer of the terminal;

The processor is configured to, when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system, execute a method based on the first value of the target parameter. Mobile operation of the terminal;

Optionally, the processor is used for:

Optionally, the processor is also used to:

Optionally, the processor is used for:

In the case where the QoS level identifier is the second value, the first bearer is used for transmission The service is video business;

The first value is different from the second value.

Optionally, the communication interface is also used for:

Send the first information to the third core network node;

Optionally, the third core network node is a serving gateway SGW.

Optionally, the communication interface is also used for:

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Optionally, the target service includes at least one of the following:

Voice service;

Video business.

This terminal embodiment corresponds to the above-mentioned first core network node side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this first core network node embodiment, and can achieve the same technical effect. Specifically, as shown in Figure 7, the embodiment of the present application also provides a core A network node, the core network node is a first core network node, and the core network node 700 includes: a processor 701, a network interface 702, and a memory 703. The network interface 702 is, for example, a Common Public Radio Interface (CPRI).

Specifically, the core network node 700 in the embodiment of the present application also includes: instructions or programs stored in the memory 703 and executable on the processor 701. The processor 701 calls the instructions or programs in the memory 703 to execute the various operations shown in Figure 6. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

Preferably, the embodiment of the present application also provides a communication device, which is a first core network node and includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. The program Or when the instruction is executed by the processor, each process of the above-mentioned communication method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, the details will not be described here.

Embodiments of the present application also provide a readable storage medium. The readable storage medium may be non-volatile or volatile. The readable storage medium stores programs or instructions, and the programs or instructions are stored on the readable storage medium. When the processor executes, each process of the above communication method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details will not be described here.

Among them, the computer-readable storage medium is such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

As shown in Figure 8, this embodiment of the present application also provides a communication device 800, which is applied to the third core network node and includes:

The second receiving module 801 is used to receive the first information sent by the first core network node;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Optionally, the third core network node is a serving gateway SGW.

It should be noted that this device embodiment is a device corresponding to the above-mentioned method. All implementation methods in the above-mentioned method embodiment are applicable to this device embodiment and can achieve the same technical effect, which will not be described again here.

An embodiment of the present application also provides a communication device, which is a third core network node and includes a processor and a communication interface, wherein the communication interface is used to receive the first information sent by the first core network node;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Optionally, the third core network node is a serving gateway SGW.

Preferably, the embodiment of the present application also provides a communication device, which is a third core network node and includes a processor, a memory, and programs or instructions stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above communication method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, the details will not be described here.

Specifically, the embodiment of the present application further provides a core network node, which is a third core network node. The structure of the third core network node can be seen in FIG7 , and will not be described in detail here.

The processor calls the instruction or program in the memory to execute the method of executing each module shown in Figure 8, and achieves the same technical effect. To avoid repetition, it will not be described in detail here.

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above communication method embodiment is implemented and the same can be achieved. To avoid repetition, the technical effects will not be repeated here.

Wherein, the processor is the processor in the network side device described in the above embodiment. described Readable storage media includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks or optical disks.

As shown in Figure 9, this embodiment of the present application also provides a communication device 900, which is applied to an access network node and includes:

The third receiving module 901 is used to receive the second information sent by the first core network node;

Optionally, the target parameter includes at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

An embodiment of the present application also provides a communication device. The communication device is an access network node and includes a processor and a communication interface, wherein the communication interface is used to receive the second information sent by the first core network node;

Optionally, the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.

Preferably, an embodiment of the present application also provides a communication device, which is an access network node, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the various processes of the above-mentioned communication method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

Specifically, embodiments of the present application also provide an access network node. As shown in Figure 10, the access network node 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004 and a memory 1005. Antenna 1001 is connected to radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

The method performed by the network side device in the above embodiment can be implemented in the baseband device 1003, which includes a baseband processor.

The baseband device 1003 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 1006, which is, for example, a Common Public Radio Interface (CPRI).

Specifically, the access network node 1000 in the embodiment of the present application also includes: instructions or programs stored in the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to execute as shown in Figure 9 To avoid duplication, the methods for executing each module and achieving the same technical effect will not be described in detail here.

The processor is the processor in the access network node described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

Optionally, as shown in Figure 11, this embodiment of the present application also provides a communication device 1100, including a The processor 1101 and the memory 1102 store programs or instructions that can be run on the processor 1101. For example, when the communication device 1100 is the first core network node, the program or instructions are executed by the processor 1101. Each step of the above communication method embodiment is implemented and the same technical effect can be achieved. When the communication device 1100 is a third core network node, when the program or instruction is executed by the processor 1101, each step of the above communication method embodiment is implemented, and the same technical effect can be achieved. When the communication device 1100 is an access network node, when the program or instruction is executed by the processor 1101, each step of the above communication 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 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 each of the above communication method embodiments. The process can achieve the same technical effect. To avoid repetition, it will not be described again here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above communication method embodiment. Each process can achieve the same technical effect. To avoid repetition, it will not be described again here.

Embodiments of the present application also provide a communication system, including: a first core network node, a third core network node and an access network node. The first core network node can be used to perform the steps of the communication method as described above, The third core network node may be configured to perform the steps of the communication method as described above, and the access network node may be configured to perform the steps of the communication method as described 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, and may also be performed in the order shown or discussed. This includes performing functions in a substantially concurrent manner or in the reverse order, depending on the function involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined . Additionally, features described with reference to certain examples may be combined in other examples.

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 related technologies. The computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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

Claims

A method of communication including:

When the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, the first core network node receives context information of the terminal sent by the second core network node, and the context information includes the first context information of the terminal. The first value of the target parameter carried;

When it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system, the first core network node determines whether the first value of the target parameter is consistent with the first value of the target parameter. Perform mobile operations for the terminal;

Wherein, N is greater than M, the first core network node is the core network node of the M-th generation mobile communication system, and the second core network node is the core network node of the N-th generation mobile communication system.
The method according to claim 1, wherein the first core network node performs a mobile operation for the terminal according to the first value of the target parameter, including:

If the service used for transmission by the first bearer is a target service, the first core network node performs a mobile operation for the terminal according to the first value of the target parameter.
The method according to claim 2, wherein the method for acquiring the service used for transmission by the first bearer comprises:

The first core network node determines the service used for transmission by the first bearer according to the quality of service QoS parameter corresponding to the first bearer.
The method according to claim 3, wherein the first core network node determines the service used for transmission by the first bearer according to the quality of service QoS parameter corresponding to the first bearer, including:

Determine the service used for transmission by the first bearer according to the QoS level identifier of the QoS parameter;

Wherein, when the QoS level identifier is a first value, the service used for transmission by the first bearer is a voice service; or,

When the QoS level identifier is the second value, the service used for transmission by the first bearer is a video service;

The first value is different from the second value.
The method of claim 1, further comprising:

The first core network node sends the first information to the third core network node;

Wherein, the first information is used to instruct the third core network node to transmit user plane data to the terminal based on the first value of the target parameter of the first bearer.
The method according to claim 5, wherein the third core network node is a serving gateway SGW.
The method of claim 1, further comprising:

The first core network node sends the second information to the access network node under the M-th generation mobile communication system;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer.
The method of claim 1, wherein the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.
The method according to any one of claims 1 to 3, wherein the target business includes at least one of the following:

Voice service;

Video business.
The method according to any one of claims 1 to 8, wherein the terminal is moved from the Nth generation mobile communication system to the Mth generation mobile communication system, including at least one of the following:

The terminal is switched from the Nth generation mobile communication system to the Mth generation mobile communication system;

The terminal is redirected from the Nth generation mobile communication system to the Mth generation mobile communication system.
The method according to any one of claims 1 to 8, wherein the Nth generation mobile communication system is a 5th generation mobile communication system, and the Mth generation mobile communication system is a 4th generation mobile communication system; and/or

The first core network node is a mobility management entity MME, and the second core network node is an access and mobility management function AMF.
A method of communication including:

The third core network node receives the first information sent by the first core network node;

The first information is used to indicate that the third core network node transmits user plane data based on the first value of the target parameter of the first bearer of the terminal. The first information is that the first core network node determines whether When the first value of the target parameter of the first bearer of the terminal is inconsistent with the second value of the target parameter that can be supported under the M-th generation mobile communication system, perform the operation for the terminal according to the first value of the target parameter. Sent under mobile operation; the first core network node is the core network node of the Mth generation mobile communication system.
The method of claim 12, wherein the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.
The method according to claim 12, wherein the third core network node is a serving gateway SGW.
A method of communication including:

The access network node receives the second information sent by the first core network node;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer of the terminal; the second information is when the first core network node determines that the terminal When the first value of the target parameter of the first bearer is inconsistent with the second value of the target parameter that can be supported under the Mth generation mobile communication system, perform a mobile operation for the terminal according to the first value of the target parameter. The first core network node is the core network node of the Mth generation mobile communication system.
The method of claim 15, wherein the target parameters include at least one of the following:

Maximum bit rate MBR;

Guaranteed bit rate GBR.
A communication device, applied to a first core network node, the communication device includes:

The first receiving module is configured to receive context information of the terminal sent by the second core network node when the terminal moves from the Nth generation mobile communication system to the Mth generation mobile communication system, where the context information includes the context information of the terminal. the first value of the target parameter of the first bearer;

Execution module, configured to execute the target parameter according to the first value of the target parameter when it is determined that the first value of the target parameter is inconsistent with the second value of the target parameter that can be supported by the Mth generation mobile communication system. Mobile operation of the terminal;

Wherein, N is greater than M, the first core network node is a core network node of an Mth generation mobile communication system, and the second core network node is a core network node of an Nth generation mobile communication system.
The device according to claim 17, wherein the execution module is used for:

If the service used for transmission by the first bearer is a target service, a mobile operation for the terminal is performed according to the first value of the target parameter.
The device according to claim 18, wherein the method for obtaining the service used for transmission by the first bearer includes:

According to the quality of service QoS parameters corresponding to the first bearer, the service used for transmission by the first bearer is determined.
The device according to claim 19, wherein determining an implementation manner of services used by the first bearer for transmission according to the quality of service QoS parameters corresponding to the first bearer includes:

Determine the service used for transmission by the first bearer according to the QoS level identifier of the QoS parameter;

Wherein, when the QoS level identifier is a first value, the service used for transmission by the first bearer is a voice service; or,

When the QoS level identifier is the second value, the service used for transmission by the first bearer is a video service;

The first value is different from the second value.
The device of claim 17, further comprising:

The first sending module is used to send the first information to the third core network node;

Wherein, the first information is used to instruct the third core network node to transmit user plane data to the terminal based on the first value of the target parameter of the first bearer.
The device of claim 17, further comprising:

A second sending module, configured to send second information to the access network node under the Mth generation mobile communication system;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer.
A communication device applied to a third core network node, the communication device includes:

A second receiving module, used to receive first information sent by the first core network node;

The first information is used to indicate that the third core network node transmits user plane data based on the first value of the target parameter of the first bearer of the terminal. The first information is that the first core network node determines whether When the first value of the target parameter of the first bearer of the terminal is inconsistent with the second value of the target parameter that can be supported under the M-th generation mobile communication system, perform the operation for the terminal according to the first value of the target parameter. Sent under mobile operation; the first core network node is the core network node of the Mth generation mobile communication system.
A communication device, applied to an access network node, the communication device includes:

The third receiving module is used to receive the second information sent by the first core network node;

The second information is used to instruct the access network node to perform data transmission of the terminal based on the first value of the target parameter of the first bearer of the terminal; the second information is when the first core network node determines that the terminal When the first value of the target parameter of the first bearer is inconsistent with the second value of the target parameter that can be supported under the Mth generation mobile communication system, perform a mobile operation for the terminal according to the first value of the target parameter. The first core network node is the core network node of the Mth generation mobile communication system.
A communication device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the communication method according to any one of claims 1 to 16 are implemented.
A readable storage medium on which a program or instructions are stored, wherein when the program or instructions are executed by a processor, the steps of the communication method according to any one of claims 1 to 16 are implemented.