WO2024041422A1 - 通信方法、装置、终端及核心网节点 - Google Patents

通信方法、装置、终端及核心网节点 Download PDF

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Publication number
WO2024041422A1
WO2024041422A1 PCT/CN2023/113222 CN2023113222W WO2024041422A1 WO 2024041422 A1 WO2024041422 A1 WO 2024041422A1 CN 2023113222 W CN2023113222 W CN 2023113222W WO 2024041422 A1 WO2024041422 A1 WO 2024041422A1
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Prior art keywords
bearer
network node
target
core network
parameters
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PCT/CN2023/113222
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English (en)
French (fr)
Inventor
程思涵
吴晓波
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维沃移动通信有限公司
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Publication of WO2024041422A1 publication Critical patent/WO2024041422A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/1016IP multimedia subsystem [IMS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a communication method, device, terminal and core network node.
  • VoNR Voice over New Radio
  • GBR Guarantee Bit Rate
  • MBR Maximum Bit Rate
  • VoLTE Voice over Long Term Evolution
  • 4G 4th Generation
  • MBR Mobility Management Function
  • a user is making a VoNR call in 5G memory.
  • the 5G signal deteriorates and needs to be switched or redirected to 4G, because the 4G network does not support the 512kbps rate, the switch to 4G fails or the redirection to 4G fails, eventually causing the user to drop the call. , affecting user experience.
  • Embodiments of the present application provide a communication method, device, terminal and core network node to solve the call drop problem caused by the terminal switching to a network with a lower transmission rate than the previously connected network.
  • a communication method including:
  • the terminal sends a first message, where the first message is used to request IMS session renegotiation;
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • a communication device including:
  • a judgment module configured to confirm whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session when moving from the first access network node to the second access network node;
  • a first sending module configured to send a first message when the target parameters of the first bearer do not match the parameters of the IMS session, where the first message is used to request IMS session renegotiation;
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • a communication method including:
  • the first core network node obtains the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology
  • the first core network node modifies the first parameter of the first bearer to the target parameters
  • N is greater than M.
  • a communication device including:
  • An acquisition module configured to acquire the first parameter of the first bearer of the terminal under the M-th generation mobile communication technology when the terminal moves from the N-th generation mobile communication technology to the M-th generation mobile communication technology;
  • Modification module configured to modify the first parameter of the first bearer to the target parameter when the first parameter of the first bearer does not match the target parameter supported by the Mth generation mobile communication technology.
  • N is greater than M.
  • the fifth aspect provides a communication method, including:
  • the second core network node receives the first message sent by the fourth core network node, and the first message is used to request the terminal to Parameters of the first bearer under the Mth generation mobile communication technology;
  • the second core network node sends to the fourth core network node a target parameter that the Mth generation mobile communication technology corresponding to the first bearer can support;
  • N is greater than M.
  • a communication device including:
  • the first receiving module is configured to receive the first message sent by the fourth core network node when the terminal moves from the Nth generation mobile communication technology to the Mth generation mobile communication technology, where the first message is used to request the Parameters of the first bearer of the terminal under the Mth generation mobile communication technology;
  • a second sending module configured to send to the fourth core network node the target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer
  • N is greater than M.
  • a terminal in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions When the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the processor is configured to confirm the target of the first bearer when moving from a first access network node to a second access network node. Parameters and Internet protocols Whether the parameters of the media system IMS session match; the communication interface is used to send a first message when the target parameters of the first bearer do not match the parameters of the IMS session, and the first message is used to request IMS session resumption. negotiate; negotiate
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • a core network node is provided.
  • the core network node 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 The instructions when executed by the processor, implement the steps of the method of the third aspect.
  • a core network node is provided.
  • the core network node is a first core network node and includes a processor and a communication interface.
  • the processor is used to move the terminal from the Nth generation mobile communication technology to the Mth generation.
  • N is greater than M.
  • a core network node is provided.
  • the core network node is a second core network node and includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • a core network node is provided.
  • the core network node is a second core network node, including a processor and a communication interface, wherein the communication interface is used to move the terminal from the Nth generation mobile communication technology to In the case of the Mth generation mobile communication technology, receiving the first message sent by the fourth core network node, the first message being used to request the parameters of the first bearer of the terminal under the Mth generation mobile communication technology; Send to the fourth core network node the target parameters that the Mth generation mobile communication technology corresponding to the first bearer can support;
  • N is greater than M.
  • a communication system including: a terminal, a first core network node and a second core network node.
  • the terminal can be used to perform the steps of the communication method as described in the first aspect, and the first
  • the core network node may be configured to perform the steps of the communication method as described in the third aspect
  • the second core network node may be configured to perform the steps of the communication method as described in the fifth aspect.
  • a readable storage medium is provided.
  • Programs or instructions are stored on the readable storage medium.
  • the programs or instructions are executed by a processor, the programs or instructions are implemented as described in the first aspect, the third aspect or the fifth aspect. steps of the method described.
  • a chip in a fifteenth aspect, 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.
  • 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.
  • the first access network node moves to the second access network node, it is determined Whether the target parameters of the first bearer match the parameters of the IMS session, and if the target parameters of the first bearer do not match the parameters of the IMS session, send a request for IMS session renegotiation so that the parameters of the IMS session
  • the first message matches the target parameter of the first bearer, so that the terminal can avoid a call drop when the terminal moves from the first access network node to the second access network node.
  • 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 one of the schematic diagrams of the internal processing process of the terminal
  • Figure 5 is the second schematic diagram of the internal processing process of the terminal
  • Figure 6 is a second schematic flowchart of the communication method according to the embodiment of the present application.
  • Figure 7 is a third schematic flowchart of the communication method according to the embodiment of the present application.
  • Figure 8 is one of the module schematic diagrams of the communication device according to the embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • Figure 10 is the second module schematic diagram of the communication device according to the embodiment of the present application.
  • Figure 11 is a schematic structural diagram of an access network node according to an embodiment of the present application.
  • Figure 12 is the third module schematic diagram of the communication device according to the embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • 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.
  • the first object can be one or multiple.
  • “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.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA single-carrier frequency division multiple access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network 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.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • WUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • 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.
  • 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 a base station, a Wireless Local Area Network (WLAN) access point or a WiFi node, etc.
  • WLAN Wireless Local Area Network
  • the base station may be called a Node B, an Evolved Node B (eNB), an access point, a 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 and receiving point ( Transmitting Receiving Point (TRP) or 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 in the NR system The base station is introduced as an example, and the specific type of 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 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.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • PCF Policy
  • this embodiment of the present application provides a communication method, including:
  • Step 201 When the terminal moves from the first access network node to the second access network node, confirm whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session;
  • Step 202 When the target parameters of the first bearer do not match the parameters of the IMS session, the terminal sends a first message, where the first message is used to request IMS session renegotiation;
  • the first message is used to ensure that the parameters of the IMS session match the target parameters of the first bearer
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System (IP Multimedia Subsystem, IMS) session.
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • the first bearer is a bearer used to transmit voice services or video services.
  • the first bearer is used to transmit voice services or video services
  • the first bearer may also be called a voice bearer or a video bearer.
  • the target parameter of the first bearer may also be called the target parameter of the voice service or the target parameter of the video service.
  • the first bearer may be a 5G Quality of Service flow (QoS) flow or a 4G Evolved Packet System (EPS) bearer.
  • QoS Quality of Service flow
  • EPS Evolved Packet System
  • 5QI 5G QoS Identifier, 5G Quality of Service Identifier
  • QCI QoS Class Identifier.
  • the voice service in this application may also be called a voice call service, and the video service may also be called a video call service.
  • 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.
  • the terminal moves from 5G to 4G, because the GBR used in 4G and 5G are different, at this time, the terminal needs to request IMS session renegotiation to ensure communication.
  • the parameters used by both parties in the IMS session match. That is, after the IMS session is renegotiated, both parties communicating use 128kbps for voice service transmission.
  • the terminal first receives the switching message sent by the first access network node, and then switches to the second access network node based on the switching message.
  • the handover message may be a handover command message.
  • the terminal first receives the redirection message sent by the first access network node, and then connects to the second access network node based on the redirection message.
  • the redirection message may be a Radio Resource Control (RRC) connection release message carrying a redirection indication.
  • RRC Radio Resource Control
  • the method of obtaining the target parameter of the first bearer includes at least one of the following:
  • the terminal receives the handover message sent by the first access network node, and obtains the target parameters of the first bearer from the handover message;
  • implementation in this case includes one of the following:
  • the access (Access Stratum, AS) layer of the terminal determines to obtain the target parameters of the first bearer corresponding to the target service according to the handover message
  • the non-access (non Access Stratum, NAS) layer of the terminal is used.
  • the layer passes the target parameter of the first bearer to the IMS layer of the terminal;
  • the target service mentioned in the embodiment of this application is preferably a voice service or a video service.
  • the AS layer of the terminal processes the received handover message.
  • the AS layer passes the parameters of the Data Radio Bearer (DRB) (such as the Prioritized Bit Rate (PBR)), it obtains multiple bearers.
  • DRB Data Radio Bearer
  • PBR Prioritized Bit Rate
  • the AS layer determines whether there is a DRB configuration corresponding to the target service. If it exists, it sends the GBR or MBR of the first bearer corresponding to the target service to the NAS layer, and then the NAS layer sends the first bearer corresponding to the target service.
  • the GBR or MBR of the bearer is transferred to the IMS layer, and the IMS layer determines whether the target parameters of the first bearer match the parameters of the IMS session.
  • the AS layer of the terminal passes the target parameter of the first bearer obtained from the handover message to the NAS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, Pass the target parameter of the first bearer to the IMS layer;
  • the AS layer of the terminal processes the received handover message.
  • the AS layer obtains the GBR or MBR corresponding to multiple bearers through the parameters of the DRB (such as the priority bit rate), it will obtain the GBR or MBR corresponding to the multiple bearers. It is forwarded to the NAS layer, which determines whether there is a first bearer corresponding to the target service. If there is, the GBR or MBR of the first bearer corresponding to the target service is transferred to the IMS layer, and the IMS layer compares the target parameters of the first bearer with Determine whether the parameters of the IMS session match.
  • the terminal receives the redirection message sent by the first access network node, connects to the second access network node according to the redirection message, and wireless resources sent from the second access network node Control the acquisition of the target parameter of the first bearer in the RRC message;
  • the RRC message may be an RRC connection reconfiguration message.
  • implementation in this case includes one of the following:
  • the AS layer of the terminal determines to obtain the target parameters of the first bearer corresponding to the target service according to the RRC message, it passes the target parameters of the first bearer to the terminal through the NAS layer of the terminal.
  • IMS layer IMS layer
  • the AS layer of the terminal processes the received RRC message.
  • the AS layer obtains the GBR or MBR corresponding to multiple bearers through the parameters of the DRB (such as the priority bit rate)
  • the AS layer determines whether there is a GBR or MBR corresponding to the target service.
  • DRB configuration if it exists, sends the GBR or MBR of the first bearer corresponding to the target service to the NAS layer, and then the NAS layer transfers the GBR or MBR of the first bearer corresponding to the target service to the IMS layer, and the IMS layer performs the first Determine whether the target parameters of the bearer match the parameters of the IMS session.
  • the AS layer of the terminal passes the target parameter of the first bearer obtained from the RRC message to the NAS layer.
  • the target parameter of the first bearer is passed to the IMS layer.
  • the AS layer of the terminal processes the received RRC message.
  • the AS layer obtains the GBR or MBR corresponding to multiple bearers through the parameters of the DRB (such as the priority bit rate), it will obtain the GBR or MBR corresponding to the multiple bearers. It is forwarded to the NAS layer, which determines whether there is a first bearer corresponding to the target service. If there is, the GBR or MBR of the first bearer corresponding to the target service is transferred to the IMS layer, and the IMS layer compares the target parameters of the first bearer with Determine whether the parameters of the IMS session match.
  • the terminal receives the first information sent by the first core network node corresponding to the second access network node, and obtains the target parameters of the first bearer according to the first information;
  • the first core network node is a core network node that provides services for the terminal.
  • the meaning of the first core network node corresponding to the second access network node is that the terminal is connected to the first core network node through the second access network node.
  • the first information is used when the terminal determines that the target parameters of the first bearer have changed.
  • the implementation of obtaining the target parameters of the first bearer according to the first information includes:
  • This implementation method is applicable to the situation where the terminal is handed over from the first access network node to the second access network node, and the handover message sent by the first access network node to the terminal carries the target parameter of the first bearer.
  • This implementation method is applicable to the situation where the terminal is redirected from the first access network node to the second access network node. After accessing the second access network node, the RRC message sent by the second access network node to the terminal carries the target parameter of the first bearer.
  • the first information may be explicit indication information, used to indicate changes in the target parameters of the first bearer, such as changes in the GBR of the voice service; or, the first information may be implicit indication information, which needs to be determined by the UE itself.
  • the first information determines that the target parameter of the first bearer changes, for example, the GBR of the voice service changes.
  • the obtaining the target parameters of the first bearer according to the first information includes:
  • the target parameter of the first bearer is included in the first information.
  • the implementation method of obtaining the target parameters of the first bearer according to the first information is: the NAS layer of the terminal receives the first information, obtains the target parameters of the first bearer according to the first information, and The target parameter of the first bearer is passed to the IMS layer.
  • the optional implementation manner of receiving the first information sent by the first core network node corresponding to the second access network node includes:
  • the location update request is a tracking area update (TAU) request or a registration (registration) request.
  • TAU tracking area update
  • registration registration
  • the first core network node mentioned in the embodiment of this application is a mobility management entity (Mobility Management Entity, MME) that can directly send messages to the terminal.
  • MME Mobility Management Entity
  • the terminal receives the first message for modifying the first bearer sent by the first core network node corresponding to the second access network node, and obtains the first message from the first message.
  • the first message is usually sent by the second core network node via the first core network node. That is to say, the second core network node first sends the first message to the first core network node, and then the second core network node sends the first message to the first core network node. A core network node then forwards the first message to the terminal.
  • the second core network node can directly send messages to the session management function (Session Management Function, SMF), packet data gateway (Packet Data Network Gateway, PGW) of the first core network node, or implement PGW and SMF at the same time.
  • SMF Session Management Function
  • PGW Packet Data Network Gateway
  • network element i.e. SMF+PGW network element
  • a further implementation method in this case is: the NAS layer of the terminal receives the first message and passes the target parameter of the first bearer in the first message to the IMS layer.
  • the core network side needs to first determine the target parameters of the first bearer.
  • the first implementation is:
  • the core network node may obtain the first parameter of the first bearer of the terminal under the M-th generation mobile communication technology when knowing that the terminal moves from the N-th generation mobile communication technology to the M-th generation mobile communication technology. If the first parameter of the first bearer does not match the target parameter supported by the Mth generation mobile communication technology, the first The first parameter of a bearer is modified to the target parameter.
  • the first core network node modifies the first parameter of the first bearer to a target parameter corresponding to the access mode of the terminal.
  • the first core network node modifies the first parameter of the first bearer to the target parameter.
  • the first core network node also needs to send a modification session request to the third core network node, where the modification session request is used to modify the first parameter of the first bearer to the target parameter.
  • the third core network node in the embodiment of this application is an SMF, a PGW, or an SMF+PGW network element that simultaneously implements PGW and SMF functions.
  • the second implementation method is:
  • the second core network node When the terminal moves from the Nth generation mobile communication technology to the Mth generation mobile communication technology, the second core network node receives the first message sent by the fourth core network node, and the first message is used to request the terminal to Parameters of the first bearer under the Mth generation mobile communication technology, the second core network node sends to the fourth core network node the parameters corresponding to the first bearer that the Mth generation mobile communication technology can support. target parameters.
  • the second core network node obtains the target access network format (RAT) information carried in the first message, and the second core network node sends the information to the fourth core network according to the target RAT information.
  • the node sends the target parameters that the Mth generation mobile communication technology corresponding to the target RAT can support.
  • RAT target access network format
  • the fourth core network node may be an Access and Mobility Management Function (AMF).
  • AMF Access and Mobility Management Function
  • the second core network node needs to modify the parameters of the first bearer to the target parameters supported by the Mth generation mobile communication technology, and then the parameters of the first bearer obtained by the first core network node are: is the target parameter.
  • the GBR supported by the terminal's voice service under 5G is 512kbps.
  • the second core network node directly maps the GBR of the voice service to 512kbps when performing parameter mapping. Since the GBR that 4G can support is 128kbps, the second core network node modifies the GBR of the voice service to 128kbps.
  • the difference between these two implementation methods is mainly that the network elements that change parameters are different.
  • the first implementation method is to change parameters by MME
  • the second implementation method is to change parameters by SMF+PGW.
  • confirming whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session includes:
  • the terminal determines whether the target parameters of the first bearer match the parameters of the IMS session.
  • the meaning of the first bearer corresponding to the target service is: the first bearer is used to transmit data of the target service, or the data of the target service is transmitted in the first bearer.
  • the process of confirming whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session is performed by the terminal. Further, it may also be performed by the IMS layer of the terminal.
  • the specific implementation process for the terminal or the terminal's IMS layer to confirm whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session includes:
  • Step 2011 Determine whether the target parameters of the first bearer and the parameters of the IMS session meet the first condition
  • Step 2012 if the first condition is met, determine that the target parameter of the first bearer matches the parameter of the IMS session, or, if the first condition is not met, determine that the target parameter of the first bearer matches the parameter of the IMS session.
  • the parameters of the IMS meeting do not match;
  • the first condition includes one of the following:
  • the absolute value of the difference between the target parameter of the first bearer and the parameter of the IMS layer session is less than or equal to the first preset value, it indicates that the target parameter of the first bearer matches the parameter of the IMS layer session.
  • the absolute value of the difference between the target parameter of the first bearer and the parameter of the IMS layer session is greater than the first preset value, it indicates that the target parameter of the first bearer does not match the parameter of the IMS layer session.
  • the first preset value may be configured on the network side, preconfigured in the terminal, or agreed upon by a protocol.
  • the target parameters of the first bearer are equal to the parameters of the IMS layer session
  • the target parameter of the first bearer when the target parameter of the first bearer is equal to the parameter of the IMS layer session, it means that the target parameter of the first bearer matches the parameter of the IMS layer session.
  • the target parameter of the first bearer matches the parameter of the IMS layer session, If the parameters are not equal, it indicates that the target parameters of the first bearer do not match the parameters of the IMS layer session.
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is the second preset value
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is the second preset value, it indicates that the target parameter of the first bearer matches the parameter of the IMS layer session.
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is If the difference between the target parameter of the first bearer and the parameter of the IMS layer session is not the second preset value, it indicates that the target parameter of the first bearer does not match the parameter of the IMS layer session.
  • the second preset value may be configured on the network side, preconfigured in the terminal, or agreed upon by a protocol.
  • Step S101 the 5G base station (NG RAN) determines to switch the UE to 4G based on the measurement results reported by the UE, and the NG RAN sends a handover instruction to the AMF currently providing services to the UE;
  • Step S102 the AMF requests the context information of the PDN connection corresponding to the UE's Protocol Data Unit (Protocol Data Unit, PDU) session from the network element (i.e., SMF+PGW-C) that implements the control plane PGW and SMF while providing services to the UE.
  • the network element i.e., SMF+PGW-C
  • 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).
  • VPLMN Visited Public Land Mobile Network
  • SMF+PGW-C can be located in the UE's local public land mobile network (HPLMN).
  • HPLMN public land mobile network
  • This step S102 specifically includes:
  • Step S102a AMF sends a context information request for the PDN connection corresponding to the PDU session to SMF+PGW-C;
  • Step S102b SMF+PGW-C implements session modification with the network element that implements both user plane PGW and UPF (i.e., PGW-U+UPF);
  • Step S102c SMF+PGW-C sends the context information of the PDN connection corresponding to the UE's PDU session to the AMF.
  • SMF+PGW-C receives the message in step S102a, when SMF+PGW-C determines that the UE switches to 4G based on the message, SMF+PGW-C carries the corresponding GBR or MBR for the voice in the PDN connection. Modify it to the parameters that the PLMN can support corresponding to the UE target access mode.
  • the subsequent processes are executed according to the existing technology, and the subsequent MME obtains the modified information, so the MME does not need to modify the parameters.
  • the AMF notifies the SMF+PGW-C of the target RAT information in step S102a.
  • the target RAT information is, for example, a common base station or a satellite base station.
  • SMF+PGW-C determines the supported GBR or MBR based on the target RAT information.
  • SMF+PGW-C After SMF+PGW-C determines that the UE has switched to 4G, it initiates a PDN connection modification message to modify the parameters of the NAS layer (for example, GBR or MBR) of the bearer used by the UE's voice service to a supportable value.
  • the parameters of the NAS layer for example, GBR or MBR
  • Step S103 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;
  • a forward relocation request (Forward Relocation Request)
  • the PDN connection information includes EPS bearer information, for example, the GBR or MBR of the EPS bearer.
  • the MME after receiving the Forward Relocation Request sent by the AMF, if the MME determines that the EPS bearer information is inconsistent with the parameters supported by E-UTRAN, it will modify the EPS bearer information to the parameters supported by E-UTRAN. For example, modify the GBR or MBR of the EPS bearer to the parameters that the PLMN can support corresponding to the UE's current access method. For example, if the parameters of the UE's access through satellite are different from those for access through 4G base station. For example, the MME will only make modifications when it determines that the EPS bearer is used for specific services (such as voice or video), and will directly reject non-specific services.
  • specific services such as voice or video
  • Step S104 the MME sends a create session request to the Serving Gateway (SGW) to create a corresponding transmission tunnel for the EPS bearer;
  • SGW Serving Gateway
  • Step S105 the SGW sends a create session response to the MME
  • the MME modifies the EPS bearer information
  • the MME carries the modified GBR or MBR.
  • the MME when the MME modifies the EPS bearer information, after step S105, the MME sends a modification session request to the SMF+PGW through the SGW to modify the GBR or MBR of the EPS bearer to support E-UTRAN. parameters.
  • Step S106 The MME sends a handover request to the 4G base station E-UTRAN, carrying the parameters of the EPS bearer to be established in the handover request;
  • Step S107 E-UTRAN allocates wireless resources and transmission tunnel resources to the EPS bearer to be established, and sends them to the MME;
  • wireless resources include random access resources and DRB resources.
  • Each EPS bearer corresponds to a DRB.
  • Step S108, MME and SGW exchange the transmission tunnel between E-UTRAN and SGW;
  • 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 S109 the MME sends the radio resources allocated by E-UTRAN to the user to the AMF;
  • Step S110 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 S110 specifically includes:
  • Step S110a AMF sends a forwarding tunnel establishment request to SMF+PGW-C;
  • Step S110b SMF+PGW-C and PGW-U+UPF implement session modification
  • Step S110c SMF+PGW-C sends a tunnel establishment response to AMF.
  • Step S111 the AMF sends the wireless resources allocated by E-UTRAN to the user to the terminal;
  • a handover message e.g., handover command
  • This step S111 specifically includes:
  • Step S111a AMF sends the radio resources allocated by E-UTRAN to the user to NG-RAN;
  • Step S111b NG RAN sends the radio resources allocated to the user by E-UTRAN to the UE.
  • the terminal determines whether the target parameters of the first bearer match the parameters of the IMS session; if the target parameters of the first bearer do not match the parameters of the IMS session, the terminal sends the first message, so The first message is used to request IMS session renegotiation so that the parameters of the IMS session match the target parameters of the first bearer.
  • the AS layer in the terminal processes the handover message received in step S111b.
  • the AS layer obtains the GBR or MBR parameters corresponding to each bearer through the parameters of the DRB (such as the priority bit rate), it can perform one of the following processes:
  • the AS determines whether there is a DRB configuration corresponding to a specific service (for example, voice service). If it exists, it sends it to the NAS layer, and the NAS layer forwards it to the IMS layer.
  • a specific service for example, voice service
  • AS directly sends the GBR or MBR parameters corresponding to each bearer to the NAS layer.
  • the NAS layer determines whether there is an EPS bearer corresponding to a specific service. When it exists, the NAS layer sends the GBR or MBR parameters corresponding to the specific service to the IMS layer. .
  • the UE initiates an IMS session re-negotiation request, and the session re-negotiation request includes the IMS parameters corresponding to the parameters of the voice bearer.
  • the NAS layer of UE1 receives the handover message, and the NAS layer of UE1 sends the target parameters of the first bearer, such as GBR or MBR, to the IMS layer.
  • the IMS layer of UE1 determines whether the target parameters of the first bearer match the parameters of the IMS session. If there is no match, UE1 initiates an IMS session renegotiation request (that is, UE1 sends the first message).
  • the session renegotiation request contains the IMS session parameters corresponding to the target parameters of the first bearer, as shown in Figure 4.
  • the parameters negotiated by the IMS layer are 512kbps, and the parameters obtained by the NAS layer are 64kbps.
  • the IMS layer uses 64kbps to renegotiate with UE2, so that the communicating parties use 64kbps for communication.
  • the IMS session renegotiation request may be a session initialization protocol (Session initialization Protocol, SIP) redirect (re-Invite) request or a SIP update (update) request.
  • Session initialization Protocol Session initialization Protocol, SIP
  • re-Invite Session initialization Protocol
  • update SIP update
  • Step S112 The UE accesses the E-UTRAN according to the radio resources allocated by the E-UTRAN, and replies with a handover completion message.
  • the terminal does not perform IMS session renegotiation before switching to 4G
  • the UE sends a TAU request within 4G
  • the MME carries the first information in the TAU acceptance message, and the first information is used Notify the UE that the bearer parameters have been updated.
  • the NAS layer of the UE obtains the DRB parameters from the AS layer based on the indication information and sends them to the IMS layer. If the IMS layer determines that the bearer parameters do not match the IMS layer parameters, the UE initiates IMS session renegotiation. request, the session re-negotiation request contains the IMS parameters corresponding to the parameters of the voice bearer; the internal processing process of the terminal is shown in Figure 5.
  • At least one embodiment of the present application determines the supported bearer parameters based on the access network node after the terminal moves, and then performs IMS session renegotiation, which can ensure that the communication service is not interrupted after the terminal moves. Ensure communication reliability.
  • this embodiment of the present application provides a communication method, including:
  • Step 601 When the terminal moves from the Nth generation mobile communication technology to the Mth generation mobile communication technology, the first core network node obtains the first bearer of the terminal under the Mth generation mobile communication technology. parameter;
  • Step 602 The first core network node modifies the first parameter of the first bearer when the first parameter of the first bearer does not match the target parameter supported by the Mth generation mobile communication technology. is the target parameter;
  • N is greater than M.
  • modifying the first parameter of the first bearer to the target parameter includes at least one of the following:
  • the first core network node modifies the first parameter of the first bearer to a target parameter corresponding to the access mode of the terminal;
  • the first parameter of the first bearer is modified to the target parameter.
  • the method shown also includes:
  • the first core network node sends a modification session request to the third core network node, where the modification session request is used to modify the first parameter of the first bearer to the target parameter.
  • the method also includes:
  • the first core network node sends first information to the terminal
  • the first information satisfies at least one of the following:
  • the first information is used by the terminal to determine that the target parameter of the first bearer has changed
  • the first information includes the target parameters.
  • the first core network node sends first information to the terminal, including:
  • the first core network node receives the location update request sent by the terminal;
  • the first core network node sends a location update accept message to the terminal, where the location update accept message includes the first information.
  • the first core network node obtains the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology, including:
  • the first core network node obtains the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • this embodiment of the present application provides a communication method, including:
  • Step 701 When the terminal moves from the Nth generation mobile communication technology to the Mth generation mobile communication technology, the second core network node receives the first message sent by the fourth core network node, and the first message is used to request the Parameters of the first bearer of the terminal under the M-th generation mobile communication technology;
  • Step 702 The second core network node sends the target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer to the fourth core network node;
  • N is greater than M.
  • the method also includes:
  • the second core network node modifies the parameters of the first bearer to target parameters supported by the Mth generation mobile communication technology.
  • the second core network node sends to the fourth core network node the target parameters that the Mth generation mobile communication technology corresponding to the first bearer can support, including:
  • the second core network node obtains the target access network standard RAT information carried in the first message
  • the second core network node sends the target parameters supported by the Mth generation mobile communication technology corresponding to the target RAT to the fourth core network node according to the target RAT information.
  • the method also includes:
  • the second core network node sends a first message for modifying the first bearer to the terminal through the first core network node, where the first message carries the target parameter of the first bearer.
  • the second core network node sends the third link corresponding to the first bearer to the fourth core network node.
  • the target parameters that M-generation mobile communication technology can support include:
  • the second core network node When the first bearer corresponds to the target service, the second core network node sends to the fourth core network node the target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer. .
  • the second core network node includes one of the following:
  • Network elements capable of implementing PGW and SMF.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • the execution subject may be a communication device.
  • 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.
  • the communication device As shown in Figure 8, the communication device according to the embodiment of the present application is applied to a terminal and includes:
  • Determination module 801 configured to confirm whether the target parameters of the first bearer match the parameters of the Internet Protocol Multimedia System IMS session when moving from the first access network node to the second access network node;
  • the first sending module 802 is configured to send a first message when the target parameters of the first bearer do not match the parameters of the IMS session, where the first message is used to request IMS session renegotiation;
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • the method for obtaining the target parameters of the first bearer includes at least one of the following:
  • the target parameter of the first bearer
  • the implementation of receiving the handover message sent by the first access network node and obtaining the target parameters of the first bearer from the handover message includes one of the following:
  • the non-access NAS layer passes the target parameters of the first bearer to the IMS layer; or,
  • the target parameters of the first bearer obtained from the handover message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer
  • the target parameters are passed to the IMS layer.
  • the implementation method of obtaining the target parameters of the first bearer in the resource control RRC message includes:
  • the AS layer determines and obtains the target parameters of the first bearer corresponding to the target service based on the RRC message, pass the target parameters of the first bearer to the IMS layer through the non-access NAS layer; or,
  • the target parameters of the first bearer obtained from the RRC message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer
  • the target parameters are passed to the IMS layer.
  • the implementation of receiving the first information sent by the first core network node corresponding to the second access network node and obtaining the target parameters of the first bearer according to the first information includes:
  • the first information is received through the non-access NAS layer, the target parameters of the first bearer are obtained according to the first information, and the target parameters of the first bearer are transferred to the IMS layer.
  • the implementation of receiving the first information sent by the first core network node corresponding to the second access network node includes:
  • the location update request is a tracking area update TAU request or a registration request.
  • the implementation of obtaining the target parameters of the first bearer according to the first information includes: :
  • the implementation of obtaining the target parameters of the first bearer according to the first information includes:
  • receiving a first message for modifying the first bearer sent by a first core network node corresponding to the second access network node receiving a first message for modifying the first bearer sent by a first core network node corresponding to the second access network node, and obtaining the first message from the first message.
  • the implementation method of the target parameters of a bearer including:
  • the first message is received through the NAS layer, and the target parameter of the first bearer in the first message is transferred to the IMS layer.
  • the redirection message is an RRC connection release message carrying a redirection indication.
  • the first core network node is a mobility management entity MME.
  • the judgment module 801 is used to:
  • the target service it is determined whether the target parameters of the first bearer match the parameters of the IMS session.
  • the judgment module 801 is used to:
  • the judgment module 801 is used to:
  • a judging unit configured to judge whether the target parameters of the first bearer and the parameters of the IMS session satisfy the first condition
  • Determining unit configured to determine that the target parameters of the first bearer match the parameters of the IMS session if the first condition is met, or to determine the target of the first bearer if the first condition is not met. The parameters do not match the parameters of the IMS session;
  • the first condition includes one of the following:
  • the target parameter of the first bearer is equal to the parameter of the IMS layer session
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is a second preset value.
  • the moving from the first access network node to the second access network node includes one of the following:
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • the communication 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.
  • 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.
  • NAS Network Attached Storage
  • 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 terminal, including a processor and a communication interface.
  • the processor is configured to confirm that the target parameter of the first bearer is consistent with the target parameter of the first bearer when moving from the first access network node to the second access network node. Whether the parameters of the Internet Protocol Multimedia System IMS session match; the communication interface is used to send a first message when the target parameters of the first bearer do not match the parameters of the IMS session, and the first message is used to request IMS Session renegotiation;
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • the communication interface is used to implement at least one of the following:
  • the target parameter of the first bearer
  • the communication interface is used to implement:
  • the non-access NAS layer passes the target parameters of the first bearer to the IMS layer; or,
  • the target parameters of the first bearer obtained from the handover message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer
  • the target parameters are passed to the IMS layer.
  • the communication interface is used to implement:
  • the AS layer determines and obtains the target parameters of the first bearer corresponding to the target service based on the RRC message, pass the target parameters of the first bearer to the IMS layer through the non-access NAS layer; or,
  • the target parameters of the first bearer obtained from the RRC message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer
  • the target parameters are passed to the IMS layer.
  • the communication interface is used to implement:
  • the first information is received through the non-access NAS layer, the target parameters of the first bearer are obtained according to the first information, and the target parameters of the first bearer are transferred to the IMS layer.
  • the communication interface is used to implement:
  • the location update request is a tracking area update TAU request or a registration request.
  • the processor is configured to:
  • the processor is configured to:
  • the communication interface is used for:
  • the first message is received through the NAS layer, and the target parameter of the first bearer in the first message is transferred to the IMS layer.
  • the redirection message is an RRC connection release message carrying a redirection indication.
  • the first core network node is a mobility management entity MME.
  • the communication interface is used for:
  • the target service it is determined whether the target parameters of the first bearer match the parameters of the IMS session.
  • the communication interface is used for:
  • the communication interface is used for:
  • the target parameter of the first bearer matches the parameter of the IMS session; or, if the first condition is not met, it is determined that the target parameter of the first bearer matches the parameter of the IMS session. Parameters do not match;
  • the first condition includes one of the following:
  • the target parameter of the first bearer is equal to the parameter of the IMS layer session
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is a second preset value.
  • the moving from the first access network node to the second access network node includes one of the following:
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, etc. At least some parts.
  • the terminal 900 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 910 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or may combine certain components, or arrange different components, which will not be described again here.
  • the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042.
  • the graphics processor 9041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 907 includes a touch panel 9071 and at least one of other input devices 9072 .
  • Touch panel 9071 also known as touch screen.
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 9072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 901 after receiving downlink data from the network side device, can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network side device.
  • the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • Memory 909 may be used to store software programs or instructions as well as various data.
  • the memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 909 may include volatile memory or nonvolatile memory, or memory 909 may include both volatile and nonvolatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 910.
  • the processor 910 is used for:
  • the radio frequency unit 901 is configured to: when the target parameters of the first bearer do not match the parameters of the IMS session, send a first message, where the first message is used to request IMS session renegotiation;
  • the first access network node belongs to the Nth generation mobile communication technology
  • the second access network node belongs to the Mth generation mobile communication technology
  • N is greater than M.
  • the radio frequency unit 901 is used to implement at least one of the following:
  • the target parameter of the first bearer
  • the radio frequency unit 901 is used for:
  • the non-access NAS layer passes the target parameters of the first bearer to the IMS layer; or,
  • the target parameters of the first bearer obtained from the handover message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer
  • the target parameters are passed to the IMS layer.
  • the implementation method of obtaining the target parameters of the first bearer in the resource control RRC message includes:
  • the AS layer determines and obtains the target parameters of the first bearer corresponding to the target service based on the RRC message, pass the target parameters of the first bearer to the IMS layer through the non-access NAS layer; or,
  • the target parameters of the first bearer obtained from the RRC message are transferred to the NAS layer through the AS layer.
  • the NAS layer determines that the first bearer is the bearer corresponding to the target service, the first bearer target parameter The data is passed to the IMS layer.
  • the radio frequency unit 901 is used for:
  • the first information is received through the non-access NAS layer, the target parameters of the first bearer are obtained according to the first information, and the target parameters of the first bearer are transferred to the IMS layer.
  • the radio frequency unit 901 is used for:
  • the location update request is a tracking area update TAU request or a registration request.
  • the processor 910 is configured to:
  • the processor 910 is configured to:
  • the radio frequency unit 901 is used for:
  • the first message is received through the NAS layer, and the target parameter of the first bearer in the first message is transferred to the IMS layer.
  • the redirection message is an RRC connection release message carrying a redirection indication.
  • the first core network node is a mobility management entity MME.
  • processor 910 is used to:
  • the target service it is determined whether the target parameters of the first bearer match the parameters of the IMS session.
  • processor 910 is used to:
  • processor 910 is used to:
  • the target parameters of the first bearer match the parameters of the IMS session; or, if the first condition is not met, it is determined that the target parameters of the first bearer match the parameters of the IMS session. Parameters do not match;
  • the first condition includes one of the following:
  • the target parameter of the first bearer is equal to the parameter of the IMS layer session
  • the difference between the target parameter of the first bearer and the parameter of the IMS layer session is a second preset value.
  • the moving from the first access network node to the second access network node includes one of the following:
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • the embodiment of the present application also provides a terminal, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • a terminal including a processor, a memory, and a program or instruction stored in the memory and executable on the processor.
  • the program or instruction is executed by the processor, the above communication is implemented.
  • Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the computer-readable storage medium.
  • 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.
  • the computer-readable storage medium is such as read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
  • this embodiment of the present application also provides a communication device 1000, which is applied to the first core network node and includes:
  • the acquisition module 1001 is configured to acquire the first parameter of the first bearer of the terminal under the M-th generation mobile communication technology when the terminal moves from the N-th generation mobile communication technology to the M-th generation mobile communication technology;
  • Modification module 1002 configured to modify the first parameter of the first bearer to the target when the first parameter of the first bearer does not match the target parameter supported by the Mth generation mobile communication technology. parameter;
  • N is greater than M.
  • the modification module 1002 is used to implement at least one of the following:
  • the first parameter of the first bearer is modified to the target parameter.
  • the device also includes:
  • the third sending module is configured to send a modification session request to the third core network node, where the modification session request is used to modify the first parameter of the first bearer to the target parameter.
  • the device also includes:
  • the fourth sending module is used to send the first information to the terminal
  • the first information satisfies at least one of the following:
  • the first information is used by the terminal to determine that the target parameter of the first bearer has changed
  • the first information includes the target parameters.
  • the fourth sending module includes:
  • the receiving unit is used to receive the location update request sent by the terminal;
  • the first sending unit is configured to send a location update acceptance message to the terminal, where the location update acceptance message includes the first information.
  • the acquisition module 1001 is used for:
  • the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology is obtained.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • 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.
  • Embodiments of the present application also provide a core network node.
  • the core network node is a first core network node and includes a processor and a communication interface.
  • the processor is used to move the terminal from the Nth generation mobile communication technology to In the case of the Mth generation mobile communication technology, obtain the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology;
  • N is greater than M.
  • the processor is used to implement at least one of the following:
  • the first parameter of the first bearer is modified to the target parameter.
  • the communication interface is used for:
  • the communication interface is used for:
  • the first information satisfies at least one of the following:
  • the first information is used by the terminal to determine that the target parameter of the first bearer has changed
  • the first information includes the target parameters.
  • the communication interface is used for:
  • the processor is used for:
  • the first parameter of the first bearer of the terminal under the Mth generation mobile communication technology is obtained.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • the embodiment of the present application also provides a core network node.
  • the core network node is a first 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.
  • the core network node 1100 includes: a processor 1101, a network interface 1102 and a memory 1103.
  • the network interface 1102 is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the core network node 1100 in the embodiment of the present application also includes: instructions or programs stored in the memory 1103 and executable on the processor 1101.
  • the processor 1101 calls the instructions or programs in the memory 1103 to execute each of the steps shown in Figure 10
  • the method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • 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.
  • the processor is the processor in the network side device 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.
  • this embodiment of the present application also provides a communication device 1200, which is applied to the second core network node and includes:
  • the first receiving module 1201 is configured to receive the first message sent by the fourth core network node when the terminal moves from the Nth generation mobile communication technology to the Mth generation mobile communication technology, where the first message is used to request the Parameters of the first bearer of the terminal under the M-th generation mobile communication technology;
  • the second sending module 1202 is configured to send the target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer to the fourth core network node;
  • N is greater than M.
  • the device also includes:
  • a parameter modification module configured to modify the parameters of the first bearer to target parameters supported by the Mth generation mobile communication technology.
  • the second sending module 1202 includes:
  • An acquisition unit configured to acquire the target access network standard RAT information carried in the first message
  • the second sending unit is configured to send target parameters supported by the Mth generation mobile communication technology corresponding to the target RAT to the fourth core network node according to the target RAT information.
  • the device also includes:
  • the fifth sending module is configured to send a first message for modifying the first bearer to the terminal through the first core network node, where the first message carries the target parameter of the first bearer.
  • the second sending module 1202 is used to:
  • target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer are sent to the fourth core network node.
  • the second core network node includes one of the following:
  • Network elements capable of implementing PGW and SMF.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • 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.
  • Embodiments of the present application also provide a core network node.
  • the core network node is a second core network node and includes a processor and a communication interface.
  • the communication interface is used to move the terminal using the Nth generation mobile communication technology.
  • receiving the first message sent by the fourth core network node the first message being used to request the parameters of the first bearer of the terminal under the Mth generation mobile communication technology. ;Sending to the fourth core network node the target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer;
  • N is greater than M.
  • the processor is used for:
  • the processor is used for:
  • the communication interface is used to send the target RAT to the fourth core network node according to the target RAT information.
  • the communication interface is also used for:
  • a first message for modifying the first bearer is sent to the terminal through the first core network node, where the first message carries the target parameter of the first bearer.
  • the communication interface is used for:
  • target parameters supported by the Mth generation mobile communication technology corresponding to the first bearer are sent to the fourth core network node.
  • the second core network node includes one of the following:
  • Network elements capable of implementing PGW and SMF.
  • the first bearer is a bearer used to transmit voice services or video services
  • the target parameters include at least one of the following:
  • the embodiment of the present application also provides a core network node.
  • the core network node is a second core network node, including 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.
  • embodiments of the present application also provide a core network node, where the core network node is a second core network node.
  • the structure of the second core network node can be referred to the structure of the core network node shown in Figure 11, and will not be described again here.
  • the second core network node in the embodiment of the present application also includes: instructions or programs stored in the memory and executable on the processor.
  • the processor calls the instructions or programs in the memory to execute the modules shown in Figure 12. method and achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • 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.
  • the processor is the processor in the network side device 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.
  • this embodiment of the present application also provides a communication device 1300, which includes a processor 1301 and a memory 1302.
  • the memory 1302 stores programs or instructions that can be run on the processor 1301, such as , when the communication device 1300 is a terminal, when the program or instruction is executed by the processor 1301, each step of the above communication method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 1300 is the first core network node, this program Or when the instructions are executed by the processor 1301, each step of the above communication method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 1300 is a second core network node, when the program or instruction is executed by the processor 1301, each step of the above communication method embodiment is implemented and the same technical effect can be achieved. To avoid duplication, the details are not repeated 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.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above communication method embodiment.
  • Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • Embodiments of the present application also provide a communication system, including: a terminal, a first core network node and a second core network node.
  • the terminal can be used to perform the steps of the communication method as described above.
  • the first core network node The second core network node may be configured to perform the steps of the communication method as described above, and the second core network node may be configured to perform the steps of the communication method as described above.
  • 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.
  • 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.

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Abstract

本申请公开了一种通信方法、装置、终端及核心网节点,属于通信技术领域,本申请实施例的通信方法,包括:终端在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;所述终端在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。

Description

通信方法、装置、终端及核心网节点
相关申请的交叉引用
本申请主张在2022年08月22日在中国提交的中国专利申请No.202211007515.5的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种通信方法、装置、终端及核心网节点。
背景技术
随着第5代(5th Generation,5G)的商用,可以为用户带来更好的服务,例如,新空口承载语音(Voice over New Radio,VoNR)可以支持更高的传输速率,例如VoNR支持的语音的保证比特速率(Guaranteed Bit Rate,GBR)或最大比特速率(Maximum Bit Rate,MBR)为512每秒千比特(kbps)。
长期演进承载语音(Voice over Long Term Evolution,VoLTE)属于传统第4代(4th Generation,4G)语音技术,其支持的最大传输速率相对VoNR较低,例如,VoLTE支持的语音的保证速率GBR或MBR为128kbps。
用户在5G内存在VoNR呼叫,当5G信号变差,需要被切换或重定向到4G时,由于4G网络不支持512kbps的速率,导致切换到4G失败或重定向到4G失败,最终导致用户掉话,影响用户体验。
发明内容
本申请实施例提供一种通信方法、装置、终端及核心网节点,解决因终端切换到比之前连接的网络传输速率低的网络时造成的掉话问题。
第一方面,提供了一种通信方法,包括:
终端在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
所述终端在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
第二方面,提供了一种通信装置,包括:
判断模块,用于在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
第一发送模块,用于在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
第三方面,提供了一种通信方法,包括:
在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
所述第一核心网节点在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
第四方面,提供了一种通信装置,包括:
获取模块,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
修改模块,用于在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
第五方面,提供了一种通信方法,包括:
在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第二核心网节点接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
第六方面,提供了一种通信装置,包括:
第一接收模块,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
第二发送模块,用于向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
第七方面,提供了一种终端,该终端包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第八方面,提供了一种终端,包括处理器及通信接口,其中,所述处理器用于在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多 媒体系统IMS会话的参数是否匹配;所述通信接口用于在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
第九方面,提供了一种核心网节点,该核心网节点为第一核心网节点,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第十方面,提供了一种核心网节点,该核心网节点为第一核心网节点,包括处理器及通信接口,其中,所述处理器用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
第十一方面,提供了一种核心网节点,该核心网节点为第二核心网节点,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第五方面所述的方法的步骤。
第十二方面,提供了一种核心网节点,该核心网节点为第二核心网节点,包括处理器及通信接口,其中,所述通信接口用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
第十三方面,提供了一种通信系统,包括:终端、第一核心网节点和第二核心网节点,所述终端可用于执行如第一方面所述的通信方法的步骤,所述第一核心网节点可用于执行如第三方面所述的通信方法的步骤,所述第二核心网节点可用于执行如第五方面所述的通信方法的步骤。
第十四方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面、第三方面或第五方面所述的方法的步骤。
第十五方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面、第三方面或第五方面所述的方法。
第十六方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面、第三方面或第五方面所述的方法的步骤。
在本申请实施例中,通过在由第一接入网节点移动到第二接入网节点的情况下,判断 第一承载的目标参数与IMS会话的参数是否匹配,在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送用于请求进行IMS会话重协商,以使得所述IMS会话的参数与所述第一承载的目标参数匹配的第一消息,以使得终端在由第一接入网节点移动到第二接入网节点的情况下,避免终端掉话的情况出现。
附图说明
图1是本申请实施例可应用的一种无线通信系统的框图;
图2是本申请实施例的通信方法的流程示意图之一;
图3是UE从5G切换到4G流程示意图;
图4是终端内部处理过程示意图之一;
图5是终端内部处理过程示意图之二;
图6是本申请实施例的通信方法的流程示意图之二;
图7是本申请实施例的通信方法的流程示意图之三;
图8是本申请实施例的通信装置的模块示意图之一;
图9是本申请实施例的终端的结构示意图;
图10是本申请实施例的通信装置的模块示意图之二;
图11是本申请实施例的接入网节点的结构示意图;
图12是本申请实施例的通信装置的模块示意图之三;
图13是本申请实施例的通信设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency  Division Multiple Access,SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio,NR)系统,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR系统应用以外的应用,如第6代(6th Generation,6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中,终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(augmented reality,AR)/虚拟现实(virtual reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(Vehicle User Equipment,VUE)、行人终端(Pedestrian User Equipment,PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer,PC)、柜员机或者自助机等终端侧设备,可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。除了上述终端设备,也可以是终端内的芯片,例如调制解调器(Modem)芯片,系统级芯片(System on Chip,SoC)。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network,WLAN)接入点或WiFi节点等,基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例进行介绍,并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项:核心网节点、核心网功能、移动管理实体(Mobility Management Entity,MME)、接入移动管理功能(Access and Mobility Management Function,AMF)、会话管理功能(Session Management Function,SMF)、用户平面功能(User Plane Function,UPF)、策略控制功能(Policy Control Function,PCF)、策略与计费规则功能单元(Policy and Charging Rules Function,PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function,EASDF)、统一数据管理(Unified Data Management,UDM),统一数据仓储(Unified Data Repository,UDR)、归属用户服务器(Home Subscriber Server,HSS)、集中式网络配置(Centralized network configuration,CNC)、网络存储功能(Network Repository Function,NRF),网络开放功能(Network Exposure  Function,NEF)、本地NEF(Local NEF,或L-NEF)、绑定支持功能(Binding Support Function,BSF)、应用功能(Application Function,AF)等。需要说明的是,在本申请实施例中仅以NR系统中的核心网设备为例进行介绍,并不限定核心网设备的具体类型。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的通信方法、装置、终端及核心网节点进行详细地说明。
如图2所示,本申请实施例提供一种通信方法,包括:
步骤201,终端在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
步骤202,所述终端在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
需要说明的是,该第一消息用于实现所述IMS会话的参数与所述第一承载的目标参数匹配;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
需要说明的是,通过在由第一接入网节点移动到第二接入网节点的情况下,判断第一承载的目标参数与互联网协议多媒体系统(IP Multimedia Subsystem,IMS)会话的参数是否匹配,在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送用于请求进行IMS会话重协商,以使得所述IMS会话的参数与所述第一承载的目标参数匹配的第一消息,以使得终端在由第一接入网节点移动到第二接入网节点的情况下,避免终端掉话的情况出现。
需要说明的是,本申请实施例中所说的目标参数包括以下至少一项:
最大比特速率(MBR);
保证比特速率(GBR)。
可选地,该第一承载为用于传输语音业务或视频业务的承载。
需要说明的是,因为第一承载用于传输语音业务或视频业务,因此第一承载也可以称为语音承载或视频承载。第一承载的目标参数也可以称为语音业务的目标参数,或视频业务的目标参数。
第一承载可以是5G的服务质量(Quality of Service flow,QoS)流(flow)或4G的演进的分组系统(Evolved Packet System,EPS)承载(bearer)。
当第一承载用于传输语音业务时,第一承载为服务质量等级为1的承载,例如,5QI(5G QoS Identifier,5G服务质量标识)=1的QoS flow,或服务质量等级标识(QoS Class Identifier,QCI)=1的EPS bearer。
本申请中的语音业务也可以称为语音呼叫(voice call)业务,视频业务也可以称为视频呼叫(video call)业务。
例如,在4G下,终端利用EPS承载进行终端的语音业务的传输,4G下支持的GBR 为128kbps,终端在5G中使用的GBR为512kbps,当终端由5G移动到4G时,因在4G和5G下使用的GBR不一样,此时,终端需要请求进行IMS会话重协商,以使得通信的双方进行IMS会话所使用的参数的匹配,即IMS会话重协商后,通信的双方都使用128kbps进行语音业务的传输。
还需要说明的是,本申请实施例中所说的终端由第一接入网节点移动到第二接入网节点,包括以下一项:
S11、由第一接入网节点切换到第二接入网节点;
在此种情况下,终端是先接收第一接入网节点发送的切换消息,然后基于该切换消息切换连接到第二接入网节点。
该切换消息可以是切换命令(handover command)消息。
S12、由第一接入网节点重定向到第二接入网节点;
在此种情况下,终端是先接收第一接入网节点发送的重定向消息,然后基于该重定向消息连接到第二接入网节点。
该重定向消息可以是携带重定向指示的无线资源控制(Radio Resource Control,RRC)连接(connection)释放(release)消息。
可选地,本申请的一实施例中,该第一承载的目标参数的获取方式,包括以下至少一项:
A11、所述终端接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数;
可选地,此种情况下的实现方式包括以下一项:
A111、所述终端的接入(Access Stratum,AS)层根据所述切换消息确定获取到目标业务对应的第一承载的目标参数时,通过所述终端的非接入(non Access Stratum,NAS)层将所述第一承载的目标参数传递给所述终端的IMS层;
需要说明的是,本申请实施例中所提到的目标业务优选为语音业务或视频业务。
此种情况下,终端的AS层处理接收到的切换消息,当AS层通过数据无线承载(Data Radio Bearer,DRB)的参数(例如优先比特速率(Prioritized Bit Rate,PBR)),获得多个承载对应的GBR或MBR后,AS层判断是否存在目标业务对应的DRB配置,若存在则将目标业务对应的第一承载的GBR或MBR发给NAS层,然后NAS层将该目标业务对应的第一承载的GBR或MBR转给IMS层,由IMS层进行第一承载的目标参数与IMS会话的参数是否匹配的判断。
A112、所述终端的AS层将从所述切换消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层;
此种情况下,终端的AS层处理接收到的切换消息,当AS层通过DRB的参数(例如优先比特速率),获得多个承载对应的GBR或MBR后,将多个承载对应的GBR或MBR 转给NAS层,由NAS层判断是否存在目标业务对应的第一承载,若存在则将目标业务对应的第一承载的GBR或MBR转给IMS层,由IMS层进行第一承载的目标参数与IMS会话的参数是否匹配的判断。
A12、所述终端接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数;
例如,该RRC消息可以是RRC连接重配(reconfiguration)消息。
可选地,此种情况下的实现方式包括以下一项:
A121、所述终端的AS层根据所述RRC消息确定获取到目标业务对应的第一承载的目标参数时,通过所述终端的NAS层将所述第一承载的目标参数传递给所述终端的IMS层;
此种情况下,终端的AS层处理接收到的RRC消息,当AS层通过DRB的参数(例如优先比特速率),获得多个承载对应的GBR或MBR后,AS层判断是否存在目标业务对应的DRB配置,若存在则将目标业务对应的第一承载的GBR或MBR发给NAS层,然后NAS层将该目标业务对应的第一承载的GBR或MBR转给IMS层,由IMS层进行第一承载的目标参数与IMS会话的参数是否匹配的判断。
A122、所述终端的AS层将从所述RRC消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
此种情况下,终端的AS层处理接收到的RRC消息,当AS层通过DRB的参数(例如优先比特速率),获得多个承载对应的GBR或MBR后,将多个承载对应的GBR或MBR转给NAS层,由NAS层判断是否存在目标业务对应的第一承载,若存在则将目标业务对应的第一承载的GBR或MBR转给IMS层,由IMS层进行第一承载的目标参数与IMS会话的参数是否匹配的判断。
A13、所述终端接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数;
第一核心网节点是为所述终端提供服务的核心网节点。第二接入网节点对应的第一核心网节点的含义是:所述终端是通过所述第二接入网节点连接到所述第一核心网节点的。
可选地,该第一信息用于所述终端确定所述第一承载的目标参数发生变化的情况下,所述根据所述第一信息获取第一承载的目标参数的实现方式,包括:
A131、从所述第一接入网节点发送的切换消息中获取第一承载的目标参数;
此种实现方式适用于终端由第一接入网节点切换到第二接入网节点的情况,第一接入网节点向终端发送的切换消息中携带有第一承载的目标参数。
A132、从所述第二接入网节点发送的RRC消息中获取第一承载的目标参数;
此种实现方式适用于终端由第一接入网节点重定向到第二接入网节点的情况,终端在 接入第二接入网节点后,第二接入网节点向终端发送的RRC消息中携带有第一承载的目标参数。
第一信息可以是一个明确的指示信息,用于指示第一承载的目标参数发生变化,例如语音业务的GBR发生变化;或者,第一信息可以是一个隐含的指示信息,需要由UE自己根据该第一信息判断出第一承载的目标参数发生变化,例如语音业务的GBR发生变化。
可选地,在所述第一信息包括所述第一承载的目标参数的情况下,所述根据所述第一信息获取第一承载的目标参数,包括:
从所述第一信息中获取第一承载的目标参数;
也就是说,此种情况下,该第一承载的目标参数是包含在第一信息中的。
可选地,根据所述第一信息获取第一承载的目标参数的实现方式为:所述终端的NAS层接收所述第一信息,根据所述第一信息获取第一承载的目标参数,将所述第一承载的目标参数传递给IMS层。
进一步地,该接收所述第二接入网节点对应的第一核心网节点发送的第一信息的可选实现方式,包括:
向所述第一核心网节点发送位置更新请求,接收所述第一核心网节点发送的位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
例如,该位置更新请求为跟踪区更新(tracking area update,TAU)请求或者注册(registration)请求。
可选地,本申请实施例中所说的第一核心网节点是可以直接发消息给终端的移动管理实体(Mobility Management Entity,MME)。
A14、所述终端接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数;
需要说的是,该第一消息通常是由第二核心网节点经由第一核心网节点发送的,也就是说,第二核心网节点先将第一消息发送给第一核心网节点,然后第一核心网节点再将该第一消息转发给终端。可选地,该第二核心网节点是可以直接发消息给第一核心网节点的会话管理功能(Session Management Function,SMF)、包数据网关(Packet Data Network Gateway,PGW)或同时实现PGW和SMF的网元(即SMF+PGW网元)。
可选地,此种情况下的进一步地实现方式为:所述终端的NAS层接收所述第一消息,将所述第一消息中的第一承载的目标参数传递给IMS层。
可选地,为了保证终端在接入到第二接入网节点后能够保证语音或视频通话的连续性,本申请的至少一个实施例中,在核心网侧需要先确定第一承载的目标参数,可选地,第一实现方式为:
核心网节点可以在知道终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数,在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第 一承载的第一参数修改为所述目标参数。
可选地,第一核心网节点将所述第一承载的第一参数修改为与所述终端的接入方式对应的目标参数。
可选地,所述第一核心网节点在确定所述第一承载用于目标业务的情况下,将所述第一承载的第一参数修改为所述目标参数。
可选地,第一核心网节点还需要发送修改会话请求给第三核心网节点,所述修改会话请求用于将所述第一承载的第一参数修改为所述目标参数。
需要说明的是,本申请实施例的第三核心网节点为SMF、PGW或同时实现PGW和SMF功能的SMF+PGW网元。
可选地,第二实现方式为:
在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第二核心网节点接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数。
进一步地,所述第二核心网节点获取所述第一消息中携带的目标接入网制式(RAT)信息,所述第二核心网节点根据所述目标RAT信息,向所述第四核心网节点发送所述目标RAT对应的所述第M代移动通信技术能够支持的目标参数。
可选地,该第四核心网节点可以为接入移动管理功能(Access and Mobility Management Function,AMF)。
需要说明的是,第二核心网节点需要将所述第一承载的参数修改为所述第M代移动通信技术能够支持的目标参数,然后第一核心网节点获取到的第一承载的参数即为目标参数。
例如,在第N代移动通信技术是5G通信技术,第M代移动通信技术是4G通信技术的下,终端的语音业务在5G下支持的GBR为512kbps。第二核心网节点在终端从5G移动到4G时,进行参数映射时,直接将语音业务的GBR映射为512kbps。由于4G能够支持的GBR是128kbps,因此第二核心网节点将语音业务的GBR修改为128kbps。
这两种实现方式的区别主要是更改参数的网元不同,第一种实现方式是由MME进行参数的更改,第二种实现方式是由SMF+PGW进行参数的更改。
可选地,本申请的至少一个实施例中,所述确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配,包括:
所述终端在所述第一承载与目标业务对应的情况下,判断所述第一承载的目标参数与IMS会话的参数是否匹配。第一承载与目标业务对应的含义是:第一承载用于传输目标业务的数据,或者,目标业务的数据是在第一承载中传输的。
可选地,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配的过程是终端执行的,进一步地,也可以是终端的IMS层执行的。
可选地,终端或终端的IMS层确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配的具体实现过程,包括:
步骤2011,判断所述第一承载的目标参数与IMS会话的参数是否满足第一条件;
步骤2012,在满足第一条件的情况下,确定所述第一承载的目标参数与IMS会话的参数匹配,或者,在不满足第一条件的情况下,确定所述第一承载的目标参数与IMS会的参数不匹配;
其中,所述第一条件包括以下一项:
C11、所述第一承载的目标参数与IMS层会话的参数的差值的绝对值是否小于或第一预设值;
此种情况下,当第一承载的目标参数与IMS层会话的参数的差值的绝对值小于或等于第一预设值的情况下,表明第一承载的目标参数与IMS层会话的参数匹配,当第一承载的目标参数与IMS层会话的参数的差值的绝对值大于第一预设值的情况下,表明第一承载的目标参数与IMS层会话的参数不匹配。
可选地,该第一预设值可以是网络侧配置、终端内预配置或协议约定的。
C12、所述第一承载的目标参数与IMS层会话的参数相等;
此种情况下,当第一承载的目标参数与IMS层会话的参数相等的情况下,表明第一承载的目标参数与IMS层会话的参数匹配,当第一承载的目标参数与IMS层会话的参数不相等的情况下,表明第一承载的目标参数与IMS层会话的参数不匹配。
C13、所述第一承载的目标参数与IMS层会话的参数的差值为第二预设值;
此种情况下,当第一承载的目标参数与IMS层会话的参数的差值为第二预设值的情况下,表明第一承载的目标参数与IMS层会话的参数匹配,当第一承载的目标参数与IMS层会话的参数差值不为第二预设值的情况下,表明第一承载的目标参数与IMS层会话的参数不匹配。
可选地,该第二预设值可以是网络侧配置、终端内预配置或协议约定的。
下面对本申请上述实施例的具体应用进行详细说明如下。
应用情况一、
如图3所示,具体步骤如下:
步骤S101,5G基站(NG RAN)根据UE上报的测量结果,确定将UE切换到4G,NG RAN向当前为UE提供服务的AMF发送切换指示;
步骤S102,AMF向为UE提供服务的同时实现控制面PGW和SMF的网元(即SMF+PGW-C)请求UE的协议数据单元(Protocol Data Unit,PDU)会话对应的PDN连接的上下文信息。
需要说明的是,若UE处于漫游状态,则通过拜访公共陆地移动网(Visited Public Land Mobile Network,VPLMN)中为UE提供服务的SMF发送给SMF+PGW-C。
注:若UE处于漫游状态,SMF+PGW-C可以位于UE的本地公共陆地移动网(HPLMN)。
该步骤S102具体包括:
步骤S102a,AMF向SMF+PGW-C发送PDU会话对应的PDN连接的上下文信息请求;
步骤S102b,SMF+PGW-C与同时实现用户面PGW和UPF的网元(即PGW-U+UPF)实现会话修改;
步骤S102c,SMF+PGW-C向AMF发送UE的PDU会话对应的PDN连接的上下文信息。
可选地,SMF+PGW-C收到步骤S102a的消息后,当SMF+PGW-C根据该消息确定UE切换到4G时,SMF+PGW-C将PDN连接中的语音承载对应的GBR或MBR修改为与UE目标接入方式对应的、该PLMN能支持的参数。
需要说明的是,在此种情况下,后续流程都是按照现有技术执行,后续MME获取的是修改后的信息,因此MME无需再进行参数的修改。
可选的,AMF在步骤S102a中通知SMF+PGW-C目标RAT信息,该目标RAT信息例如为普通基站或卫星基站。SMF+PGW-C根据目标RAT信息确定支持的GBR或MBR。
SMF+PGW-C在确定UE切换到4G后,发起PDN连接修改消息,用于将UE的语音业务所使用的承载的NAS层的参数(例如,GBR或MBR)修改为可支持的值。
步骤S103,AMF向MME发送前转重定位请求(Forward Relocation Request),在该请求中包含UE的上下文信息,包括UE的PDU会话对应的PDN连接的信息;
PDN连接的信息中包含EPS承载(bearer)的信息,例如,EPS bearer的GBR或MBR。
可选地,MME在收到AMF发送的Forward Relocation Request后,若判断EPS bearer的信息与E-UTRAN支持的参数不一致,则将该EPS bearer的信息修改为E-UTRAN支持的参数。例如,将EPS bearer的GBR或MBR修改为与UE当前接入方式对应的该PLMN能支持的参数,例如,若UE通过卫星接入与通过4G基站接入的参数不同。例如,MME只有当判断出该EPS bearer用于特定业务(例如语音或视频)时,才进行修改,非特定业务直接拒绝。
步骤S104,MME向服务网关(Serving Gateway,SGW)发送创建会话请求,用于为EPS bearer创建对应的传输隧道;
步骤S105,SGW向MME发送创建会话响应;
可选地,在MME对EPS bearer的信息进行修改的情况下,步骤S104中,MME携带修改后的GBR或MBR。
可选地,在MME对EPS bearer的信息进行修改的情况下,MME在步骤S105后,MME通过SGW向SMF+PGW发送修改会话请求,用于将EPS bearer的GBR或MBR修改为E-UTRAN支持的参数。
步骤S106,MME向4G基站E-UTRAN发送切换请求,在切换请求中携带待建立的EPS bearer的参数;
步骤S107,E-UTRAN为待建立的EPS bearer分配无线资源和传输隧道资源,并发送给MME;
其中,无线资源包括随机接入资源以及DRB资源。
注:每个EPS bearer对应一个DRB。
步骤S108,MME与SGW交互E-UTRAN与SGW间的传输隧道;
具体的,MME将传输隧道资源发送给SGW,请求建立E-UTRAN与SGW间的传输隧道,SGW向MME返回传输隧道响应。
步骤S109,MME将E-UTRAN为用户分配的无线资源发送给AMF;
步骤S110,若UE在NG RAN内缓存的数据优先级较高,AMF通知SMF+PGW-C建立转发隧道,用于将UE的数据从NG RAN转发到E-URTAN;
该步骤S110具体包括:
步骤S110a,AMF向SMF+PGW-C发送转发隧道建立请求;
步骤S110b,SMF+PGW-C与PGW-U+UPF实现会话修改;
步骤S110c,SMF+PGW-C向AMF发送隧道建立响应。
步骤S111,AMF向终端发送E-UTRAN为用户分配的无线资源;
例如,通过切换消息(例如,handover command)发送。
该步骤S111具体包括:
步骤S111a,AMF将E-UTRAN为用户分配的无线资源发送给NG-RAN;
步骤S111b,NG RAN将E-UTRAN为用户分配的无线资源发送给UE。
可选地,终端收到切换消息后,判断第一承载的目标参数与IMS会话的参数是否匹配;在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商,以使得所述IMS会话的参数与所述第一承载的目标参数匹配。
例如,终端内的AS层处理在步骤S111b收到的切换消息,当AS层通过DRB的参数(例如优先比特速率),获得每个承载对应的GBR或MBR参数后可执行如下的过程之一:
过程1、AS判断是否存在特定业务(例如,语音业务)对应的DRB配置,若存在则发给NAS层,NAS层转给IMS层。
过程2、AS直接将每个承载对应的GBR或MBR参数发给NAS层,NAS层判断是否存在特定业务对应EPS承载,当存在时,NAS层将特定业务对应的GBR或MBR参数发送给IMS层。
进一步地,若IMS层判断承载参数与IMS层参数不匹配,则UE发起IMS会话重协商请求,在会话重协商请中包含语音承载的参数对应的IMS参数。
例如,UE1的NAS层收到切换消息,UE1的NAS层向IMS层发送第一承载的目标参数,例如GBR或MBR,UE1的IMS层判断第一承载的目标参数与IMS会话的参数是否匹配,若不匹配,则UE1发起IMS会话重协商请求(即,UE1发送第一消息),在IMS 会话重协商请中包含第一承载的目标参数对应的IMS会话参数,如图4所示。
例如,IMS层协商的参数是512kbps,NAS层得到的参数是64kbps,NAS层将64kbps发送给IMS层后,IMS层使用64kbps与UE2进行重协商,从而通信双方使用64kbps进行通信。
可选地,IMS会话重协商请求可以是会话初始协议(Session initialization Protocol,SIP)重定向(re-Invite)请求或SIP更新(update)请求。
步骤S112,UE根据E-UTRAN分配的无线资源接入E-UTRAN,并回复切换完成消息。
可选地,若终端在切换到4G之前未进行IMS会话重协商,则UE切换到4G后,UE在4G内发送TAU请求,MME在TAU接受消息内携带第一信息,该第一信息用于通知UE承载参数有更新,UE的NAS层根据该指示信息,向AS层获得DRB的参数,并发送给IMS层;若IMS层判断承载参数与IMS层参数不匹配,则UE发起IMS会话重协商请求,在会话重协商请中包含语音承载的参数对应的IMS参数;终端内部的处理过程如图5所示。
需要说明的是,本申请的至少一个实施例,通过基于终端移动后的接入网节点确定支持的承载的参数,进而进行IMS会话重协商,可以保证终端在进行移动后,通信业务不中断,保证通信可靠性。
如图6所示,本申请实施例提供一种通信方法,包括:
步骤601,在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
步骤602,所述第一核心网节点在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
可选地,所述将所述第一承载的第一参数修改为所述目标参数,包括以下至少一项:
所述第一核心网节点将所述第一承载的第一参数修改为与所述终端的接入方式对应的目标参数;
所述第一核心网节点在确定所述第一承载用于目标业务的情况下,将所述第一承载的第一参数修改为所述目标参数。
可选地,所示方法,还包括:
所述第一核心网节点发送修改会话请求给第三核心网节点,所述修改会话请求用于将所述第一承载的第一参数修改为所述目标参数。
可选地,所述方法,还包括:
所述第一核心网节点向所述终端发送第一信息;
其中,所述第一信息满足以下至少一项:
所述第一信息用于所述终端确定所述第一承载的目标参数发生变化;
所述第一信息包括所述目标参数。
可选地,所述第一核心网节点向所述终端发送第一信息,包括:
所述第一核心网节点接收终端发送的位置更新请求;
所述第一核心网节点向终端发送位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数,包括:
在所述第一承载与目标业务对应的情况下,所述第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
需要说明的是,上述实施例中所有关于第一核心网节点的描述均适用于应用于第一核心网节点的该通信方法的实施例中,也能达到与之相同的技术效果,在此不再赘述。
如图7所示,本申请实施例提供一种通信方法,包括:
步骤701,在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第二核心网节点接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
步骤702,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
可选地,所述方法,还包括:
所述第二核心网节点将所述第一承载的参数修改为所述第M代移动通信技术能够支持的目标参数。
可选地,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数,包括:
所述第二核心网节点获取所述第一消息中携带的目标接入网制式RAT信息;
所述第二核心网节点根据所述目标RAT信息,向所述第四核心网节点发送所述目标RAT对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述方法,还包括:
所述第二核心网节点通过第一核心网节点向所述终端发送用于对所述第一承载进行修改的第一消息,所述第一消息中携带所述第一承载的目标参数。
可选地,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第 M代移动通信技术能够支持的目标参数,包括:
在所述第一承载与目标业务对应的情况下,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述第二核心网节点包括以下一项:
会话管理功能SMF;
包数据网关PGW;
能够实现PGW和SMF的网元。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
需要说明的是,上述实施例中所有关于第二核心网节点的描述均适用于应用于第二核心网节点的该通信方法的实施例中,也能达到与之相同的技术效果,在此不再赘述。
本申请实施例提供的通信方法,执行主体可以为通信装置。本申请实施例中以通信装置执行通信方法为例,说明本申请实施例提供的通信装置。
如图8所示,本申请实施例的通信装置,应用于终端,包括:
判断模块801,用于在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
第一发送模块802,用于在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
可选地,所述第一承载的目标参数的获取方式,包括以下至少一项:
接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数;
接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数。
可选地,所述接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数的实现方式,包括以下一项:
通过接入AS层根据所述切换消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述切换消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
可选地,所述接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数的实现方式,包括:
通过AS层根据所述RRC消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述RRC消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
可选地,所述接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数的实现方式,包括:
通过非接入NAS层接收所述第一信息,根据所述第一信息获取第一承载的目标参数,将所述第一承载的目标参数传递给IMS层。
可选地,所述接收所述第二接入网节点对应的第一核心网节点发送的第一信息的实现方式,包括:
向所述第一核心网节点发送位置更新请求;
接收所述第一核心网节点发送的位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述位置更新请求为跟踪区更新TAU请求或者注册请求。
可选地,在所述第一信息用于所述终端确定所述第一承载的目标参数发生变化的情况下,所述根据所述第一信息获取第一承载的目标参数的实现方式,包括:
从所述第一接入网节点发送的切换消息中获取第一承载的目标参数;或者
从所述第二接入网节点发送的RRC消息中获取第一承载的目标参数。
可选地,在所述第一信息包括所述第一承载的目标参数的情况下,所述根据所述第一信息获取第一承载的目标参数的实现方式,包括:
从所述第一信息中获取第一承载的目标参数。
可选地,所述接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数的实现方式,包括:
通过NAS层接收所述第一消息,将所述第一消息中的第一承载的目标参数传递给IMS层。
可选地,所述重定向消息为携带重定向指示的RRC连接释放消息。
可选地,所述第一核心网节点为移动管理实体MME。
可选地,所述判断模块801,用于:
在所述第一承载与目标业务对应的情况下,判断所述第一承载的目标参数与IMS会话的参数是否匹配。
可选地,所述判断模块801,用于:
通过IMS层确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配。
可选地,所述判断模块801,用于:
判断单元,用于判断所述第一承载的目标参数与IMS会话的参数是否满足第一条件;
确定单元,用于在满足第一条件的情况下,确定所述第一承载的目标参数与IMS会话的参数匹配,或者,在不满足第一条件的情况下,确定所述第一承载的目标参数与IMS会的参数不匹配;
其中,所述第一条件包括以下一项:
所述第一承载的目标参数与IMS层会话的参数的差值的绝对值是否小于或等于第一预设值;
所述第一承载的目标参数与IMS层会话的参数相等;
所述第一承载的目标参数与IMS层会话的参数的差值为第二预设值。
可选地,所述由第一接入网节点移动到第二接入网节点,包括以下一项:
由第一接入网节点切换到第二接入网节点;
由第一接入网节点重定向到第二接入网节点。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
需要说明的是,该装置实施例是与上述方法对应的,上述方法实施例中的所有实现方式均适用于该装置实施例中,也能达到相同的技术效果。
本申请实施例中的通信装置可以是电子设备,例如具有操作系统的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是终端,也可以为除终端之外的其他设备。示例性的,终端可以包括但不限于上述所列举的终端11的类型,其他设备可以为服务器、网络附属存储器(Network Attached Storage,NAS)等,本申请实施例不作具体限定。
本申请实施例提供的通信装置能够实现图2的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种终端,包括处理器和通信接口,所述处理器用于在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;所述通信接口用于在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
可选地,所述通信接口用于实现以下至少一项:
接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数;
接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数。
可选地,所述通信接口用于实现:
通过接入AS层根据所述切换消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述切换消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
可选地,所述通信接口用于实现:
通过AS层根据所述RRC消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述RRC消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
可选地,所述通信接口用于实现:
通过非接入NAS层接收所述第一信息,根据所述第一信息获取第一承载的目标参数,将所述第一承载的目标参数传递给IMS层。
可选地,所述通信接口用于实现:
向所述第一核心网节点发送位置更新请求;
接收所述第一核心网节点发送的位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述位置更新请求为跟踪区更新TAU请求或者注册请求。
可选地,在所述第一信息用于所述终端确定所述第一承载的目标参数发生变化的情况下,所述处理器用于:
从所述第一接入网节点发送的切换消息中获取第一承载的目标参数;或者
从所述第二接入网节点发送的RRC消息中获取第一承载的目标参数。
可选地,在所述第一信息包括所述第一承载的目标参数的情况下,所述处理器用于:
从所述第一信息中获取第一承载的目标参数。
可选地,所述通信接口用于:
通过NAS层接收所述第一消息,将所述第一消息中的第一承载的目标参数传递给IMS层。
可选地,所述重定向消息为携带重定向指示的RRC连接释放消息。
可选地,所述第一核心网节点为移动管理实体MME。
可选地,所述通信接口用于:
在所述第一承载与目标业务对应的情况下,判断所述第一承载的目标参数与IMS会话的参数是否匹配。
可选地,所述通信接口用于:
通过IMS层确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配。
可选地,所述通信接口用于:
判断所述第一承载的目标参数与IMS会话的参数是否满足第一条件;
在满足第一条件的情况下,确定所述第一承载的目标参数与IMS会话的参数匹配,或者,在不满足第一条件的情况下,确定所述第一承载的目标参数与IMS会的参数不匹配;
其中,所述第一条件包括以下一项:
所述第一承载的目标参数与IMS层会话的参数的差值的绝对值是否小于或等于第一预设值;
所述第一承载的目标参数与IMS层会话的参数相等;
所述第一承载的目标参数与IMS层会话的参数的差值为第二预设值。
可选地,所述由第一接入网节点移动到第二接入网节点,包括以下一项:
由第一接入网节点切换到第二接入网节点;
由第一接入网节点重定向到第二接入网节点。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
该终端实施例与上述终端侧方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。具体地,图9为实现本申请实施例的一种终端的硬件结构示意图。
该终端900包括但不限于:射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909以及处理器910等中的至少部分部件。
本领域技术人员可以理解,终端900还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器910逻辑相连,从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图9中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元904可以包括图形处理单元(Graphics Processing Unit,GPU)9041和麦克风9042,图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元906可包括显示面板9061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板9061。用户输入单元907包括触控面板9071以及其他输入设备9072中的至少一种。触控面板9071,也称为触摸屏。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元901接收来自网络侧设备的下行数据后,可以传输给处理器910进行处理;另外,射频单元901可以向网络侧设备发送上行数据。通常,射频单元901包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器909可用于存储软件程序或指令以及各种数据。存储器909可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器909可以包括易失性存储器或非易失性存储器,或者,存储器909可以包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请实施例中的存储器909包括但不 限于这些和任意其它适合类型的存储器。
处理器910可包括一个或多个处理单元;可选的,处理器910集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器910中。
其中,所述处理器910,用于:
在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
所述射频单元901,用于:在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
可选地,所述射频单元901,用于实现以下至少一项:
接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数;
接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数;
接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数。
可选地,所述射频单元901,用于:
通过接入AS层根据所述切换消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述切换消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
可选地,所述接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数的实现方式,包括:
通过AS层根据所述RRC消息确定获取到目标业务对应的第一承载的目标参数时,通过非接入NAS层将所述第一承载的目标参数传递给IMS层;或者,
通过AS层将从所述RRC消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参 数传递给IMS层。
可选地,所述射频单元901,用于:
通过非接入NAS层接收所述第一信息,根据所述第一信息获取第一承载的目标参数,将所述第一承载的目标参数传递给IMS层。
可选地,所述射频单元901,用于:
向所述第一核心网节点发送位置更新请求;
接收所述第一核心网节点发送的位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述位置更新请求为跟踪区更新TAU请求或者注册请求。
可选地,在所述第一信息用于所述终端确定所述第一承载的目标参数发生变化的情况下,所述处理器910,用于:
从所述第一接入网节点发送的切换消息中获取第一承载的目标参数;或者
从所述第二接入网节点发送的RRC消息中获取第一承载的目标参数。
可选地,在所述第一信息包括所述第一承载的目标参数的情况下,所述处理器910,用于:
从所述第一信息中获取第一承载的目标参数。
可选地,所述射频单元901,用于:
通过NAS层接收所述第一消息,将所述第一消息中的第一承载的目标参数传递给IMS层。
可选地,所述重定向消息为携带重定向指示的RRC连接释放消息。
可选地,所述第一核心网节点为移动管理实体MME。
可选地,所述处理器910,用于:
在所述第一承载与目标业务对应的情况下,判断所述第一承载的目标参数与IMS会话的参数是否匹配。
可选地,所述处理器910,用于:
通过IMS层确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配。
可选地,所述处理器910,用于:
判断所述第一承载的目标参数与IMS会话的参数是否满足第一条件;
在满足第一条件的情况下,确定所述第一承载的目标参数与IMS会话的参数匹配,或者,在不满足第一条件的情况下,确定所述第一承载的目标参数与IMS会的参数不匹配;
其中,所述第一条件包括以下一项:
所述第一承载的目标参数与IMS层会话的参数的差值的绝对值是否小于或等于第一预设值;
所述第一承载的目标参数与IMS层会话的参数相等;
所述第一承载的目标参数与IMS层会话的参数的差值为第二预设值。
可选地,所述由第一接入网节点移动到第二接入网节点,包括以下一项:
由第一接入网节点切换到第二接入网节点;
由第一接入网节点重定向到第二接入网节点。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
优选的,本申请实施例还提供一种终端,包括处理器,存储器,存储在存储器上并可在所述处理器上运行的程序或指令,该程序或指令被处理器执行时实现上述的通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种可读存储介质,计算机可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述的通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述的计算机可读存储介质,如只读存储器(Read-Only Memory,简称ROM)、随机存取存储器(Random Access Memory,简称RAM)、磁碟或者光盘等。
如图10所示,本申请实施例还提供一种通信装置1000,应用于第一核心网节点,包括:
获取模块1001,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
修改模块1002,用于在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
可选地,所述修改模块1002,用于实现以下至少一项:
将所述第一承载的第一参数修改为与所述终端的接入方式对应的目标参数;
在确定所述第一承载用于目标业务的情况下,将所述第一承载的第一参数修改为所述目标参数。
可选地,所述装置,还包括:
第三发送模块,用于发送修改会话请求给第三核心网节点,所述修改会话请求用于将所述第一承载的第一参数修改为所述目标参数。
可选地,所述装置,还包括:
第四发送模块,用于向所述终端发送第一信息;
其中,所述第一信息满足以下至少一项:
所述第一信息用于所述终端确定所述第一承载的目标参数发生变化;
所述第一信息包括所述目标参数。
可选地,所述第四发送模块,包括:
接收单元,用于接收终端发送的位置更新请求;
第一发送单元,用于向终端发送位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述获取模块1001,用于:
在所述第一承载与目标业务对应的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
需要说明的是,该装置实施例是与上述方法对应的装置,上述方法实施例中的所有实现方式均适用于该装置实施例中,也能达到相同的技术效果,在此不再赘述。
本申请实施例还提供了一种核心网节点,所述核心网节点为第一核心网节点,包括处理器及通信接口,其中,所述处理器用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
其中,N大于M。
可选地,所述处理器用于实现以下至少一项:
将所述第一承载的第一参数修改为与所述终端的接入方式对应的目标参数;
在确定所述第一承载用于目标业务的情况下,将所述第一承载的第一参数修改为所述目标参数。
可选地,所述通信接口用于:
发送修改会话请求给第三核心网节点,所述修改会话请求用于将所述第一承载的第一参数修改为所述目标参数。
可选地,所述通信接口用于:
向所述终端发送第一信息;
其中,所述第一信息满足以下至少一项:
所述第一信息用于所述终端确定所述第一承载的目标参数发生变化;
所述第一信息包括所述目标参数。
可选地,所述通信接口用于:
接收终端发送的位置更新请求;
向终端发送位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
可选地,所述处理器用于:
在所述第一承载与目标业务对应的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
优选的,本申请实施例还提供一种核心网节点,所述核心网节点为第一核心网节点,包括处理器,存储器,存储在存储器上并可在所述处理器上运行的程序或指令,该程序或指令被处理器执行时实现上述的通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
具体地,本申请实施例还提供了一种核心网节点,所述核心网节点为第一核心网节点。如图11所示,该核心网节点1100包括:处理器1101、网络接口1102和存储器1103。其中,网络接口1102例如为通用公共无线接口(common public radio interface,CPRI)。
具体地,本申请实施例的核心网节点1100还包括:存储在存储器1103上并可在处理器1101上运行的指令或程序,处理器1101调用存储器1103中的指令或程序执行图10所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的网络侧设备中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
如图12所示,本申请实施例还提供一种通信装置1200,应用于第二核心网节点,包括:
第一接收模块1201,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
第二发送模块1202,用于向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
可选地,所述装置,还包括:
参数修改模块,用于将所述第一承载的参数修改为所述第M代移动通信技术能够支持的目标参数。
可选地,所述第二发送模块1202,包括:
获取单元,用于获取所述第一消息中携带的目标接入网制式RAT信息;
第二发送单元,用于根据所述目标RAT信息,向所述第四核心网节点发送所述目标RAT对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述装置,还包括:
第五发送模块,用于通过第一核心网节点向所述终端发送用于对所述第一承载进行修改的第一消息,所述第一消息中携带所述第一承载的目标参数。
可选地,所述第二发送模块1202,用于:
在所述第一承载与目标业务对应的情况下,向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述第二核心网节点包括以下一项:
会话管理功能SMF;
包数据网关PGW;
能够实现PGW和SMF的网元。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
需要说明的是,该装置实施例是与上述方法对应的装置,上述方法实施例中的所有实现方式均适用于该装置实施例中,也能达到相同的技术效果,在此不再赘述。
本申请实施例还提供了一种核心网节点,所述核心网节点为第二核心网节点,包括处理器及通信接口,其中,所述通信接口用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
其中,N大于M。
可选地,所述处理器用于:
将所述第一承载的参数修改为所述第M代移动通信技术能够支持的目标参数。
可选地,所述处理器用于:
获取所述第一消息中携带的目标接入网制式RAT信息;
所述通信接口用于根据所述目标RAT信息,向所述第四核心网节点发送所述目标RAT 对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述通信接口还用于:
通过第一核心网节点向所述终端发送用于对所述第一承载进行修改的第一消息,所述第一消息中携带所述第一承载的目标参数。
可选地,所述通信接口用于:
在所述第一承载与目标业务对应的情况下,向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数。
可选地,所述第二核心网节点包括以下一项:
会话管理功能SMF;
包数据网关PGW;
能够实现PGW和SMF的网元。
可选地,所述第一承载为用于传输语音业务或视频业务的承载;
和/或
所述目标参数包括以下至少一项:
最大比特速率MBR;
保证比特速率GBR。
优选的,本申请实施例还提供一种核心网节点,所述核心网节点为第二核心网节点,包括处理器,存储器,存储在存储器上并可在所述处理器上运行的程序或指令,该程序或指令被处理器执行时实现上述的通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
具体地,本申请实施例还提供了一种核心网节点,所述核心网节点为第二核心网节点。该第二核心网节点的结构可参见如图11所示的核心网节点的结构,在此不再赘述。
具体地,本申请实施例的第二核心网节点还包括:存储在存储器上并可在处理器上运行的指令或程序,处理器调用存储器中的指令或程序执行图12所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的网络侧设备中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
可选的,如图13所示,本申请实施例还提供一种通信设备1300,包括处理器1301和存储器1302,存储器1302上存储有可在所述处理器1301上运行的程序或指令,例如,该通信设备1300为终端时,该程序或指令被处理器1301执行时实现上述通信方法实施例的各个步骤,且能达到相同的技术效果。该通信设备1300为第一核心网节点时,该程序 或指令被处理器1301执行时实现上述通信方法实施例的各个步骤,且能达到相同的技术效果。该通信设备1300为第二核心网节点时,该程序或指令被处理器1301执行时实现上述通信方法实施例的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述通信方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种通信系统,包括:终端、第一核心网节点和第二核心网节点,所述终端可用于执行如上所述的通信方法的步骤,所述第一核心网节点可用于执行如上所述的通信方法的步骤,所述第二核心网节点可用于执行如上所述的通信方法的步骤。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (37)

  1. 一种通信方法,包括:
    终端在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
    所述终端在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
    其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
  2. 根据权利要求1所述的方法,其中,所述第一承载的目标参数的获取方式,包括以下至少一项:
    所述终端接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数;
    所述终端接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数;
    所述终端接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数;
    所述终端接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数。
  3. 根据权利要求2所述的方法,其中,所述终端接收所述第一接入网节点发送的切换消息,从所述切换消息中获取第一承载的目标参数,包括:
    所述终端的接入AS层根据所述切换消息确定获取到目标业务对应的第一承载的目标参数时,通过所述终端的非接入NAS层将所述第一承载的目标参数传递给所述终端的IMS层;或者,
    所述终端的AS层将从所述切换消息中获取的第一承载的目标参数传递给NAS层,所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
  4. 根据权利要求2所述的方法,其中,所述终端接收所述第一接入网节点发送的重定向消息,根据所述重定向消息连接到所述第二接入网节点,从所述第二接入网节点发送的无线资源控制RRC消息中获取第一承载的目标参数,包括:
    所述终端的AS层根据所述RRC消息确定获取到目标业务对应的第一承载的目标参数时,通过所述终端的非接入NAS层将所述第一承载的目标参数传递给所述终端的IMS层;或者,
    所述终端的AS层将从所述RRC消息中获取的第一承载的目标参数传递给NAS层, 所述NAS层在确定所述第一承载为目标业务对应的承载的情况下,将所述第一承载的目标参数传递给IMS层。
  5. 根据权利要求2所述的方法,其中,所述终端接收所述第二接入网节点对应的第一核心网节点发送的第一信息,根据所述第一信息获取第一承载的目标参数,包括:
    所述终端的NAS层接收所述第一信息,根据所述第一信息获取第一承载的目标参数,将所述第一承载的目标参数传递给IMS层。
  6. 根据权利要求2或5所述的方法,其中,所述接收所述第二接入网节点对应的第一核心网节点发送的第一信息,包括:
    向所述第一核心网节点发送位置更新请求;
    接收所述第一核心网节点发送的位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
  7. 根据权利要求6所述的方法,其中,所述位置更新请求为跟踪区更新TAU请求或者注册请求。
  8. 根据权利要求2或5所述的方法,其中,在所述第一信息用于所述终端确定所述第一承载的目标参数发生变化的情况下,所述根据所述第一信息获取第一承载的目标参数,包括:
    从所述第一接入网节点发送的切换消息中获取第一承载的目标参数;或者
    从所述第二接入网节点发送的RRC消息中获取第一承载的目标参数。
  9. 根据权利要求2或5所述的方法,其中,在所述第一信息包括所述第一承载的目标参数的情况下,所述根据所述第一信息获取第一承载的目标参数,包括:
    从所述第一信息中获取第一承载的目标参数。
  10. 根据权利要求2所述的方法,其中,所述终端接收所述第二接入网节点对应的第一核心网节点发送的用于对所述第一承载进行修改的第一消息,从所述第一消息中获取所述第一承载的目标参数,包括:
    所述终端的NAS层接收所述第一消息,将所述第一消息中的第一承载的目标参数传递给IMS层。
  11. 根据权利要求2所述的方法,其中,所述重定向消息为携带重定向指示的RRC连接释放消息。
  12. 根据权利要求2所述的方法,其中,所述第一核心网节点为移动管理实体MME。
  13. 根据权利要求1所述的方法,其中,所述确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配,包括:
    所述终端在所述第一承载与目标业务对应的情况下,判断所述第一承载的目标参数与IMS会话的参数是否匹配。
  14. 根据权利要求1所述的方法,其中,所述确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配,包括:
    所述终端的IMS层确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配。
  15. 根据权利要求1或14所述的方法,其中,所述确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配,包括:
    判断所述第一承载的目标参数与IMS会话的参数是否满足第一条件;
    在满足第一条件的情况下,确定所述第一承载的目标参数与IMS会话的参数匹配,或者,在不满足第一条件的情况下,确定所述第一承载的目标参数与IMS会的参数不匹配;
    其中,所述第一条件包括以下一项:
    所述第一承载的目标参数与IMS层会话的参数的差值的绝对值是否小于或等于第一预设值;
    所述第一承载的目标参数与IMS层会话的参数相等;
    所述第一承载的目标参数与IMS层会话的参数的差值为第二预设值。
  16. 根据权利要求1所述的方法,其中,所述由第一接入网节点移动到第二接入网节点,包括以下一项:
    由第一接入网节点切换到第二接入网节点;
    由第一接入网节点重定向到第二接入网节点。
  17. 根据权利要求1-16任一项所述的方法,其中,所述第一承载为用于传输语音业务或视频业务的承载;
    和/或
    所述目标参数包括以下至少一项:
    最大比特速率MBR;
    保证比特速率GBR。
  18. 一种通信方法,包括:
    在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
    所述第一核心网节点在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
    其中,N大于M。
  19. 根据权利要求18所述的方法,其中,所述将所述第一承载的第一参数修改为所述目标参数,包括以下至少一项:
    所述第一核心网节点将所述第一承载的第一参数修改为与所述终端的接入方式对应的目标参数;
    所述第一核心网节点在确定所述第一承载用于目标业务的情况下,将所述第一承载的第一参数修改为所述目标参数。
  20. 根据权利要求18所述的方法,其中,所述方法还包括:
    所述第一核心网节点发送修改会话请求给第三核心网节点,所述修改会话请求用于将所述第一承载的第一参数修改为所述目标参数。
  21. 根据权利要求18所述的方法,其中,所述方法还包括:
    所述第一核心网节点向所述终端发送第一信息;
    其中,所述第一信息满足以下至少一项:
    所述第一信息用于所述终端确定所述第一承载的目标参数发生变化;
    所述第一信息包括所述目标参数。
  22. 根据权利要求21所述的方法,其中,所述第一核心网节点向所述终端发送第一信息,包括:
    所述第一核心网节点接收终端发送的位置更新请求;
    所述第一核心网节点向终端发送位置更新接受消息,所述位置更新接受消息中包括所述第一信息。
  23. 根据权利要求18所述的方法,其中,所述第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数,包括:
    在所述第一承载与目标业务对应的情况下,所述第一核心网节点获取所述终端在所述第M代移动通信技术下的第一承载的第一参数。
  24. 根据权利要求18-23任一项所述的方法,其中,所述第一承载为用于传输语音业务或视频业务的承载;
    和/或
    所述目标参数包括以下至少一项:
    最大比特速率MBR;
    保证比特速率GBR。
  25. 一种通信方法,包括:
    在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,第二核心网节点接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
    所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
    其中,N大于M。
  26. 根据权利要求25所述的方法,其中,所述方法还包括:
    所述第二核心网节点将所述第一承载的参数修改为所述第M代移动通信技术能够支持的目标参数。
  27. 根据权利要求25或26所述的方法,其中,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数,包括:
    所述第二核心网节点获取所述第一消息中携带的目标接入网制式RAT信息;
    所述第二核心网节点根据所述目标RAT信息,向所述第四核心网节点发送所述目标RAT对应的所述第M代移动通信技术能够支持的目标参数。
  28. 根据权利要求25所述的方法,其中,所述方法还包括:
    所述第二核心网节点通过第一核心网节点向所述终端发送用于对所述第一承载进行修改的第一消息,所述第一消息中携带所述第一承载的目标参数。
  29. 根据权利要求25所述的方法,其中,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数,包括:
    在所述第一承载与目标业务对应的情况下,所述第二核心网节点向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数。
  30. 根据权利要求25所述的方法,其中,所述第二核心网节点包括以下一项:
    会话管理功能SMF;
    包数据网关PGW;
    能够实现PGW和SMF的网元。
  31. 根据权利要求25-30任一项所述的方法,其中,所述第一承载为用于传输语音业务或视频业务的承载;
    和/或
    所述目标参数包括以下至少一项:
    最大比特速率MBR;
    保证比特速率GBR。
  32. 一种通信装置,包括:
    判断模块,用于在由第一接入网节点移动到第二接入网节点的情况下,确认第一承载的目标参数与互联网协议多媒体系统IMS会话的参数是否匹配;
    第一发送模块,用于在第一承载的目标参数与IMS会话的参数不匹配的情况下,发送第一消息,所述第一消息用于请求进行IMS会话重协商;
    其中,所述第一接入网节点属于第N代移动通信技术,所述第二接入网节点属于第M代移动通信技术,N大于M。
  33. 一种通信装置,包括:
    获取模块,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情况下,获取所述终端在所述第M代移动通信技术下的第一承载的第一参数;
    修改模块,用于在所述第一承载的第一参数与所述第M代移动通信技术支持的目标参数不匹配的情况下,将所述第一承载的第一参数修改为所述目标参数;
    其中,N大于M。
  34. 一种通信装置,包括:
    第一接收模块,用于在终端由第N代移动通信技术移动到第M代移动通信技术的情 况下,接收第四核心网节点发送的第一消息,所述第一消息用于请求所述终端在所述第M代移动通信技术下的第一承载的参数;
    第二发送模块,用于向所述第四核心网节点发送所述第一承载对应的所述第M代移动通信技术能够支持的目标参数;
    其中,N大于M。
  35. 一种终端,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至17任一项所述的通信方法的步骤。
  36. 一种核心网节点,所述核心网节点为第一核心网节点或第二核心网节点,其中,所述核心网节点包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求18至31任一项所述的通信方法的步骤。
  37. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至31任一项所述的通信方法的步骤。
PCT/CN2023/113222 2022-08-22 2023-08-16 通信方法、装置、终端及核心网节点 WO2024041422A1 (zh)

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