WO2020223909A1 - 一种上下文管理方法、设备及存储介质 - Google Patents

一种上下文管理方法、设备及存储介质 Download PDF

Info

Publication number
WO2020223909A1
WO2020223909A1 PCT/CN2019/085906 CN2019085906W WO2020223909A1 WO 2020223909 A1 WO2020223909 A1 WO 2020223909A1 CN 2019085906 W CN2019085906 W CN 2019085906W WO 2020223909 A1 WO2020223909 A1 WO 2020223909A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
data transmission
plane data
control plane
network
Prior art date
Application number
PCT/CN2019/085906
Other languages
English (en)
French (fr)
Inventor
刘建华
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980046748.6A priority Critical patent/CN112425206B/zh
Priority to PCT/CN2019/085906 priority patent/WO2020223909A1/zh
Publication of WO2020223909A1 publication Critical patent/WO2020223909A1/zh

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point

Definitions

  • the present invention relates to the field of wireless communication technology, and in particular to a context management method, device and storage medium.
  • a terminal device moves from a source network to a target network
  • the terminal device moves from a wireless (New Radio, NR) system to an evolved packet system (Evolved Packet System, EPS), or a terminal device moves from an EPS to a target network.
  • NR New Radio
  • EPS evolved Packet System
  • embodiments of the present invention provide a context management method, device, and storage medium.
  • a terminal device moves from a source network to a target network, the continuity of services is realized by managing the context.
  • the embodiments of the present invention provide a context management method, which includes that when a terminal device moves from a source network to a target network, the source core network element determines that the session management (Session Management) is performed according to at least one of the following.
  • Management, SM Whether to carry the bearer corresponding to the session used for control plane data transmission in the context: whether the target core network element supports control plane data transmission capability information, and whether the terminal device supports control plane data transmission on the target network Mode and whether the terminal device wants to control plane data transmission mode in the target network:
  • an embodiment of the present invention provides a context management method, including: a terminal device sends information; the information includes at least one of the following: whether the terminal device supports a control plane data transmission method in a target network, and Whether the terminal device wants to control the plane data transmission mode in the target network.
  • an embodiment of the present invention provides a context management method, including: when a terminal device moves from a source network to a target network, the source core network element sends a first command for a session for user plane data transmission, The first command is used to instruct the source network to release the context, or the first command is used to instruct the source network to release the context when the timer expires.
  • an embodiment of the present invention provides a context management method, including: when a terminal device moves from a source network to a target network, the terminal device releases the access layer context for the session used for user plane data transmission Or in the case that the timer expires, the terminal device releases the access stratum context.
  • an embodiment of the present invention provides a context management method.
  • the method includes: when a terminal device moves from a source network to a target network, the terminal device does not release the session used for user plane data transmission. Access stratum context; or the terminal device releases or does not release the access stratum context according to the third indication information sent by the source network device.
  • an embodiment of the present invention provides a source core network element.
  • the source core network element includes: a first processing unit configured to: when a terminal device moves from a source network to a target network, the source core network The network element determines whether to carry the bearer corresponding to the session used for control plane data transmission in the SM context according to at least one of the following:
  • the target core network element supports the control plane data transmission capability information, whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device desires the control plane data transmission mode in the target network.
  • an embodiment of the present invention provides a terminal device, and the terminal device includes:
  • the first sending unit is configured to send information; the information includes at least one of the following: whether the terminal device supports control plane data transmission in the target network, and whether the terminal device wants control plane data in the target network transfer method.
  • an embodiment of the present invention provides a source core network element, including: a second sending unit configured to send for a session used for user plane data transmission when the terminal device moves from the source network to the target network
  • the first command, the first command is used to instruct the source network to release the context, or the first command is used to instruct the source network to release the context when the timer expires.
  • an embodiment of the present invention provides a terminal device, and the terminal device includes:
  • the second processing unit is configured to release the access layer context for the session used for user plane data transmission when the terminal device moves from the source network to the target network; or when the timer expires, the terminal device Release the access layer context.
  • an embodiment of the present invention provides a terminal device, and the terminal device includes:
  • the third processing unit is configured to not release the access layer context for the session used for user plane data transmission when the terminal device moves from the source network to the target network; or the terminal device does not release the access layer context according to the first sent by the source network device 3. Indicate whether to release or not release the access stratum context.
  • an embodiment of the present invention provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the computer program when the computer program is running.
  • the terminal device executes the steps of the context management method.
  • an embodiment of the present invention provides a source core network network element, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used for running the computer program. , Execute the steps of the context management method executed by the source core network element.
  • an embodiment of the present invention provides a storage medium storing an executable program, and when the executable program is executed by a processor, the above-mentioned context management method executed by the terminal device is implemented.
  • an embodiment of the present invention provides a storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the context management method executed by the source core network element.
  • the context management method provided by the embodiment of the present invention includes: when the terminal device moves from the source network to the target network, the source core network element determines whether to carry in the session management SM context according to at least one of the following The bearer corresponding to the control plane data transmission session: whether the target core network element supports the control plane data transmission capability information, whether the terminal device supports the control plane data transmission mode in the target network, and the terminal device is located in the State whether the target network wants to control the plane data transmission mode.
  • the source core network element sends a first command for the session for user plane data transmission, where the first command is used to instruct the source network to release the context, or the The first command is used to instruct the source network to release the context when the timer expires.
  • the continuity of the service is realized through the management of the context.
  • FIG. 1 is a schematic diagram of the composition structure of a communication system according to an embodiment of the present invention
  • FIG. 3 is a second schematic diagram of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 4 is a third schematic diagram of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 5 is a fourth schematic diagram of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 6 is a schematic diagram 5 of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 7 is a sixth schematic diagram of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 8 is a seventh schematic diagram of a processing flow of context management provided by an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an optional composition structure of a source core network network element provided by an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an optional composition structure of a terminal device according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another optional composition structure of a source core network network element provided by an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another optional composition structure of a terminal device according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another optional composition structure of a terminal device according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of the hardware composition structure of an electronic device according to an embodiment of the present invention.
  • an optimization method for the control plane and an optimization method for the user plane are introduced.
  • the uplink and downlink data is encapsulated in Non-Access Stratum (NAS) messages and transferred between the terminal device and the network device; the optimization method of the control plane does not require a user plane for data transmission. Connection.
  • NAS Non-Access Stratum
  • the terminal device when the terminal device returns to the idle state, the PDU session of the terminal device is in the active state, and the mobility management context of the terminal device is stored in the Access and Mobility Function (AMF) Entity, the session management context is stored in the Session Management Function (SMF) entity, the access layer context is kept in the network device, and the terminal device also keeps these contexts.
  • the terminal device adopts the connection recovery process to restore the context of the terminal device, and directly sends the data to the network device.
  • the context management method in the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, multiple code division Address (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system , LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access, WiMAX) communication system or 5G system, etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE Frequency Division Duplex Frequency Division Duplex
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Micro
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches
  • the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
  • the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • PSTN public switched telephone networks
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL Digital Subscriber Line
  • DSL
  • a terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a “mobile terminal”.
  • mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
  • PCS Personal Communications System
  • GPS Global Positioning System
  • Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • Figure 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
  • the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with communication functions, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
  • the optional processing flow 1 of the context management method provided by the embodiment of the present invention, as shown in FIG. 2, includes the following steps:
  • Step S201 When the terminal device moves from the source network to the target network, the source core network element determines whether the bearer corresponding to the session used for control plane data transmission is carried in the SM context according to at least one of the following:
  • the target core network element supports the control plane data transmission capability information, whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device desires the control plane data transmission mode in the target network.
  • the source core network element determines that the SM context carries the control plane in at least one of the following situations
  • the target core network element supports the control plane data transmission capability information, the terminal device supports the control plane data transmission mode in the target network, and the terminal device is in the target network Hope to control plane data transmission mode.
  • the terminal device when the core network element is SMF, the terminal device will determine whether the terminal device supports the control plane data transmission mode in the target network, and/or whether the terminal device wishes to control the target network
  • the plane data transmission mode is sent to the AMF entity; the target core network element (such as the MME) sends the ability information of whether the target core network element supports the control plane data transmission to the AMF entity.
  • the AMF entity will receive information about whether the target network supports the control plane data transmission mode, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports the control plane data transmission capability information Sent to the SMF entity.
  • Step S300 the terminal device establishes a PDU session for user control plane data transmission in 5GS.
  • the source core network element does not allocate EPS bearers for the PDU session . If EPS does not support the control plane data transmission mode, SMF allocates the bearer for the PDU session. And, SMF allocates EPS bearer identifier, or SMF requires AMF to allocate EPS bearer identifier.
  • the EPS bearer may be a default bearer.
  • the terminal device determines whether the terminal device supports the control plane data transmission mode on the target network, and/or whether the terminal device wants to send the control plane data transmission mode on the target network To the AMF entity.
  • step S301 to step S304 the terminal device initiates the TAU process.
  • step S304 the target core network element MME sends the capability information of whether the target core network element supports control plane data transmission to the AMF entity.
  • Step S305 The AMF entity requests the SMF entity to provide the SM context.
  • the SM context includes the context of the EPS bearer.
  • the specific implementation process of the AMF entity requesting the SMF entity to provide the SM context includes steps S305a, S305b, and S305c.
  • step S305a the AMF entity determines whether the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports At least one of the ability information of the control plane to transmit data is sent to the SMF entity.
  • the SMF entity determines whether the bearer corresponding to the session used for control plane data transmission is carried in the SM context according to the information sent by the received AMF.
  • the terminal device does not support the control plane data transmission method on the target network, or the terminal device does not want the control plane data transmission method on the target network, or the target core network element does not support
  • the SMF entity determines that the SM context carries the corresponding bearer for the control plane data transmission session; and the SMF entity allocates the corresponding bearer identifier, or the SMF entity requests the AMF entity to allocate the corresponding bearer The bearer identifier.
  • the bearer corresponding to the session used for control plane data transmission may be the default bearer.
  • the bearer corresponding to the session used for control plane data transmission and the corresponding bearer identifier may also be allocated in step S300. If the bearer corresponding to the session used for control plane data transmission and the corresponding bearer identifier are allocated in step S300, there is no need to repeat the allocation in step S305. It can be understood that the bearer corresponding to the session used for the control plane data transmission and the corresponding bearer identifier may be allocated in step S300 shown in FIG. 3, or may be allocated in step S305 shown in FIG.
  • the target core network element supports the control plane data transmission capability information, or the terminal device supports the control plane data transmission mode in the target network, or the terminal device wishes to control the plane data transmission mode in the target network
  • the SMF entity determines that the SM context does not carry the bearer corresponding to the session used for control plane data transmission.
  • the SMF entity only needs to determine whether the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and the target core network network Whether the element supports any item of the control plane data transmission capability information, it can be determined whether the SM context carries the bearer corresponding to the session used for control plane data transmission.
  • Step S306 The AMF entity sends a context response to the MME.
  • Step S307 the AMF entity and the HSS/UDM, and the AMF entity and the terminal device perform authentication/authentication.
  • Step S308 the MME sends a context confirmation to the AMF entity.
  • Step S309 The MME sends a session creation request to the S-GW.
  • Step S310 the S-GW sends a bearer modification request to the P-GW-C/SMF.
  • step S311 the N4 session modification is performed between the P-GW-C/SMF and the P-GW-U/UPF.
  • Step S312 the P-GW-C/SMF sends a bearer modification response to the S-GW.
  • Step S313 the S-GW sends a session creation response to the MME.
  • Step S314 MME and HSS/UDM update the area.
  • Step S315 HSS/UDM sends Nudm UECM deregistration notification to AMF.
  • Step S316 the HSS/UDM sends an update area confirmation to the MME.
  • Step S317 The MME sends a TAU accept message to the terminal device.
  • Step S319 Initialize the dedicated bearer.
  • the terminal device supports the control plane data transmission mode on the target network during the initiation of the Tracking Area Update (TAU) process, and the terminal device wishes to control the control plane on the target network.
  • At least one of the plane data transmission modes is sent to the target core network element (MME).
  • MME target core network element
  • the target core network element (MME) sends the received information to the AMF entity.
  • the AMF entity forwards the received information to the SMF entity, and the SMF entity determines whether the SM context carries the bearer corresponding to the session for control plane data transmission; or the AMF entity determines whether the SM context carries the control plane data according to the received message
  • the AMF entity sends the determined result to the SMF entity.
  • the target core network element determines whether the SM context carries the bearer corresponding to the session used for control plane data transmission according to the received message, and sends the determined result to the AMF entity, and then the AMF Sent to the SMF entity.
  • Step S400 The terminal device establishes a PDU session for user control plane data transmission in 5GS.
  • the source core network element does not allocate EPS bearers for the PDU session . If EPS does not support the control plane data transmission mode, SMF allocates the bearer for the PDU session. And, SMF allocates EPS bearer identifier, or SMF requires AMF to allocate EPS bearer identifier.
  • the EPS bearer may be a default bearer.
  • Steps S401 to S404 the terminal device initiates a TAU process.
  • step S401 the terminal device sends at least one of the control plane data transmission mode supported by the terminal device in the target network and the control plane data transmission mode the terminal device desires in the target network to the target Core network element (MME). It can be understood that the terminal device reports at least one of the control plane data transmission mode supported by the terminal device on the target network and the control plane data transmission mode desired by the terminal device on the target network through the target network.
  • MME target Core network element
  • Step S405 the AMF entity requests the SMF entity to provide the SM context.
  • the AMF entity determines whether the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports the control plane At least one of the capability information for data transmission is sent to the SMF entity.
  • the AMF entity is based on whether the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports the control plane data transmission mode.
  • At least one of the capability information determining whether the SM context carries the bearer corresponding to the session used for control plane data transmission; and sending whether the SM context carries the bearer corresponding to the session used for control plane data transmission to the SMF through the first indication information entity.
  • the AMF entity receives in step S404 the indication information of whether the SM context carries the bearer corresponding to the control plane data transmission, and sends it to the SMF entity; its feature is whether the SM context carries the session correspondence used for the control plane data transmission Is carried by the MME according to whether the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports the control plane transmission data At least one of the capability information is determined.
  • step S406 to step S419 is the same as the processing procedure of the terminal device moving from 5GS to EPS in the prior art, and will not be repeated here.
  • the terminal device when the terminal device moves from the source network to the target network, the terminal device sends second indication information to the target core network element, and the second indication information is used to indicate the Whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device wants the control plane data transmission mode in the target network.
  • the terminal device when the terminal device moves from 5GS to EPS, the terminal device locally deletes PDU sessions that can only be used for the control plane.
  • the terminal device When the terminal device moves to the EPS, the terminal device initiates the initial registration process, re-establishes the PDN connection, and indicates to the network device target core network element (MME) whether the terminal device supports the control plane data transmission method in the target network, And whether the terminal device wants to control the plane data transmission mode in the target network.
  • MME network target core network element
  • the communication between the SMF entity and the AMF entity is based on a handover request message sent by the access network of the source network.
  • the communication between the SMF entity and the AMF entity includes: whether the terminal device transferred between the SMF entity and the AMF entity supports the control plane data transmission mode in the target network, and the terminal device is in the target network At least one of whether it is desired to control plane data transmission mode and whether the target core network element supports the control plane data transmission capability information.
  • the communication between the SMF entity and the AMF entity includes whether the SM context carries a bearer corresponding to the session used for control plane data transmission.
  • the communication between the SMF entity and the AMF entity refers to steps S402a to S402c shown in FIG. 4.
  • the handover request message sent by the access network of the source network refers to the step S501 shown in FIG. 4:
  • NR-RAN sends a handover request (Handover required) message to the AMF entity, and the Handover required message carries the data that the terminal device is in the target Whether the network supports at least one of a control plane data transmission mode, and whether the terminal device desires a control plane data transmission mode in the target network.
  • the AMF entity determines whether the SM context carries the bearer corresponding to the session for control plane data transmission according to the received information; or the AMF entity sends the received information to the SMF entity, and the SMF entity determines whether the SM context carries control plane data The bearer corresponding to the transmitted session.
  • FIGS. 2 to 4 are the control plane optimization data transmission interoperability process.
  • the following describes the context management method of the present invention based on the user plane optimization data transmission interoperability process.
  • the optional processing flow 4 of the context management method provided by the embodiment of the present invention, as shown in FIG. 5, includes the following steps:
  • Step S601 When the terminal device moves from the source network to the target network, the source core network element sends a first command for the session for user plane data transmission, where the first command is used to instruct the source network to release the context, or The first command is used to instruct the source network to release the context when the timer expires.
  • the first command is used to instruct the source radio access network element to release the context, or the first command is used to instruct the source radio access network element to release the context when the timer expires. Release the context.
  • the context includes at least one of the following: N3 context, access stratum context, and NG-AP context of the terminal device.
  • the first command is also used to carry the reason for releasing the context.
  • the reasons for releasing the context include: the terminal device moves to another network, the terminal device leaves, and so on.
  • the AMF entity executes either of the following two solutions:
  • the AMF entity triggers the AN release process to release the NG-AP context, N3 context, and access layer context of the terminal device.
  • the AMF entity sends a release command to the RAN network element, where the release command instructs the RAN network element to locally release the context of the terminal device.
  • the shown release command carries a release reason, for example, the terminal device moves to another network or the terminal device leaves. After the RAN network element receives the release command, it locally releases the context of the terminal device.
  • the AMF entity does not trigger the release of the terminal device context.
  • the terminal device moves to the target network
  • the terminal device, the source access network, and the source core network continue to store the NG-AP context, N3 context, and access corresponding to the PDU session used by the terminal device for user plane data transmission.
  • Layer context After the terminal device returns from the target network to the source network, the access layer context of the PDU session used for user plane data transmission is restored.
  • the core network element starts a timer and maintains the NG-AP context, the N3 context, and the access layer context during the operation of the timer (that is, when the timer does not expire). When the timer expires, the context of the terminal device is triggered to be released.
  • the sixth optional processing procedure of the context management method provided by the embodiment of the present invention, as shown in FIG. 7, includes the following steps:
  • step S801 when the terminal device moves from the source network to the target network, the terminal device releases the access layer context for the session used for user plane data transmission; or in the case that the timer expires, the terminal device Release the access layer context.
  • the terminal device if the timer does not expire, the terminal device retains the access stratum context.
  • the timer is configured by the source network device; where the source network device is a source access network network element or a source core network network element.
  • the core network element is an SMF entity or AMF entity; for EPS, the core network element is an MME.
  • the seventh optional processing procedure of the context management method provided by the embodiment of the present invention, as shown in FIG. 8, includes the following steps:
  • Step S901 when the terminal device moves from the source network to the target network, the terminal device does not release the access layer context for the session used for user plane data transmission; or the terminal device does not release the access layer context according to the first network device sent by the source network device. 3. Indicate whether to release or not release the access stratum context.
  • the third indication information indicates that the terminal device Whether to retain the access layer context when the source network is switched to the target network.
  • the source network device is a source access network network element or a source core network network element.
  • the core network element is an SMF entity or AMF entity; for EPS, the core network element is an MME.
  • the source network is 5GS and the target network is EPS as an example to illustrate the context management method provided by the embodiment of the present invention.
  • the source network may also be EPS and the target network may be 5GS.
  • the source network and the target network can also be other wireless networks besides 5GS and EPS.
  • the context management methods provided by the foregoing embodiments of the present invention are applied to scenarios where a terminal device moves from a source network to a target network; in a scenario where the terminal device moves from a source network to a target network, a data transmission method optimized by the control plane is provided And when the user plane optimized data transmission method is adopted, how the terminal device and network device handle the context and how to handle the terminal device link; thus solving the problem of business continuity when the terminal device moves from the source network to the target network .
  • an embodiment of the present invention also provides a source core network element.
  • An optional composition structure of the source core network element 1000 includes:
  • the first processing unit 1001 is configured to, when the terminal device moves from the source network to the target network, the source core network element determines whether the control plane data is carried in the session management SM context according to at least one of the following The bearer corresponding to the transmitted session:
  • the target core network element supports the control plane data transmission capability information, whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device desires the control plane data transmission mode in the target network.
  • the first processing unit 1001 is configured to determine that the SM context does not carry the bearer corresponding to the session used for control plane data transmission in at least one of the following situations:
  • the target core network element supports the control plane data transmission capability information
  • the terminal device supports the control plane data transmission mode in the target network
  • the terminal device wishes to control the control plane data transmission mode in the target network.
  • the source core network element 1000 when the source core network element is an SMF entity, the source core network element 1000 further includes:
  • the first receiving unit 1002 is configured to receive at least one of the following information sent by the access and mobility management function AMF entity:
  • the terminal device supports the control plane data transmission mode in the target network, whether the terminal device wants the control plane data transmission mode in the target network, and whether the target core network element supports the control plane data transmission capability information.
  • the source core network element is a session management function SMF entity, and the source core network element 1000 further includes:
  • the second receiving unit 1003 is configured to receive first indication information sent by an AMF entity, where the first indication information is used to indicate whether the SMF entity allocates a corresponding bearer for a session used for control plane data transmission.
  • whether the SMF entity allocates a corresponding bearer for the session used for control plane data transmission is determined by the AMF entity according to at least one of the following information carried in the tracking area update TAU request message of the terminal device:
  • the terminal device supports a control plane data transmission mode in the target network, and whether the terminal device wants a control plane data transmission mode in the target network;
  • the information carried in the TAU request message is sent to the AMF entity via the target core network element.
  • the source core network element is an SMF entity, and the source core network element further includes:
  • the third receiving unit 1004 is configured to receive at least one of the following information sent by the AMF entity: whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device is in the target network Hope to control plane data transmission mode;
  • the information is carried in the TAU request message sent by the terminal device and sent to the AMF entity via the target core network element.
  • whether the SMF entity allocates a corresponding bearer for the session used for control plane data transmission is determined by the target core network element entity according to at least one of the following information carried in the TAU request message by the terminal device After confirming, send to the AMF entity:
  • the terminal device supports a control plane data transmission mode in the target network, and whether the terminal device wants a control plane data transmission mode in the target network;
  • the information carried in the TAU request message is sent to the AMF entity via the target core network element.
  • the first processing unit 1001 is further configured to delete the PDU session of the control plane;
  • the terminal device When the terminal device moves from the source network to the target network, the terminal device sends second indication information to the target core network element, and the second indication information is used to indicate that the terminal device is on the target network. Whether the control plane data transmission mode is supported, and whether the terminal device wishes to control the plane data transmission mode in the target network.
  • the communication between the SMF entity and the AMF entity is based on a handover request message sent by the access network of the source network.
  • the first processing unit 1001 is configured to determine that the SM context carries the bearer corresponding to the session used for control plane data transmission in at least one of the following situations:
  • the terminal device does not support the control plane data transmission method in the target network, the terminal device does not want the control plane data transmission method in the target network, and the target core network element does not support the control plane data transmission ability information.
  • the source core network element is an SMF entity
  • the first processing unit 1001 is further configured to allocate a bearer identity; or is further configured to request an AMF entity to allocate a bearer identity.
  • an embodiment of the present invention also provides a terminal device.
  • An optional structure of the terminal device 2000, as shown in FIG. 10, includes:
  • the first sending unit 2001 is configured to send information; the information includes at least one of the following: whether the terminal device supports the control plane data transmission mode in the target network, and whether the terminal device wants the control plane in the target network Data transmission method.
  • the first sending unit 2001 is configured to send information to the source core network element.
  • the first sending unit 2001 is configured to send a TAU request message to the target network, and the message carries the information.
  • an embodiment of the present invention also provides a source core network element.
  • Another composition structure of the source core network element 3000, as shown in FIG. 11, includes:
  • the second sending unit 3001 is configured to send a first command for the session used for user plane data transmission when the terminal device moves from the source network to the target network, the first command is used to instruct the source network to release the context, or The first command is used to instruct the source network to release the context when the timer expires.
  • the first command carries the reason for releasing the context.
  • the context includes at least one of the following: N3 context, access stratum context, and NG-AP context of the terminal device.
  • an embodiment of the present invention also provides a terminal device.
  • Another structure of the terminal device 4000, as shown in FIG. 12, includes:
  • the second processing unit 4001 is configured to release the access layer context for the session used for user plane data transmission when the terminal device moves from the source network to the target network; or when the timer expires, the terminal The device releases the access layer context.
  • the second processing unit 4001 is further configured to reserve the access stratum context when the timer does not expire.
  • the timer is configured by the source network device.
  • the source network device is a source access network network element or a source core network network element.
  • an embodiment of the present invention also provides a terminal device.
  • Another composition structure of the terminal device 5000, as shown in FIG. 13, includes:
  • the third processing unit 5001 is configured to not release the access layer context for the session used for user plane data transmission when the terminal device moves from the source network to the target network; or the terminal device according to the source network device sent The third indication information releases or does not release the access stratum context.
  • the third indication information indicates that the terminal device Whether to retain the access layer context when the source network is switched to the target network.
  • the source network device is a source access network network element or a source core network network element.
  • An embodiment of the present invention also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the above-mentioned terminal device when the computer program is running. Steps of the context management method.
  • An embodiment of the present invention also provides a source core network element, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the source when the computer program is running.
  • the steps of the context management method executed by the core network element are not limited to a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the source when the computer program is running. The steps of the context management method executed by the core network element.
  • the electronic device 6000 includes: at least one processor 6001, memory 6002, and at least one network interface 6004.
  • the components in the electronic device 6000 are coupled together through the bus system 6005.
  • the bus system 6005 is used to implement connection and communication between these components.
  • the bus system 6005 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 6005 in FIG. 14.
  • the memory 6002 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
  • the non-volatile memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
  • the volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • SSRAM synchronous static random access memory
  • DRAM dynamic random access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM enhanced -Type synchronous dynamic random access memory
  • SLDRAM SyncLink Dynamic Random Access Memory
  • direct memory bus random access memory DRRAM, Direct Rambus Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 6002 described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 6002 in the embodiment of the present invention is used to store various types of data to support the operation of the electronic device 6000.
  • Examples of such data include: any computer program used to operate on the electronic device 6000, such as the application program 60022.
  • the program for implementing the method of the embodiment of the present invention may be included in the application program 60022.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 6001 or implemented by the processor 6001.
  • the processor 6001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor 6001 or instructions in the form of software.
  • the aforementioned processor 6001 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like.
  • the processor 6001 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in the embodiments of the present invention can be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 6002.
  • the processor 6001 reads the information in the memory 6002 and completes the steps of the foregoing method in combination with its hardware.
  • the electronic device 6000 may be used by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • PLD programmable logic device
  • CPLD complex programmable logic device
  • FPGA field-programmable Logic Device
  • controller MCU
  • MPU or other electronic components to implement the foregoing method.
  • the embodiment of the present application also provides a storage medium for storing computer programs.
  • the storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • the computer program causes the computer to execute the corresponding process in each method of the embodiment of the present application.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Abstract

本发明公开了一种上下文管理方法,包括:在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理SM上下文中是否携带用于控制平面数据传输的会话对应的承载:目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。本发明还公开了另一种上下文管理方法、设备及存储介质。

Description

一种上下文管理方法、设备及存储介质 技术领域
本发明涉及无线通信技术领域,尤其涉及一种上下文管理方法、设备及存储介质。
背景技术
相关技术中,在终端设备从源网络向目标网络移动的情况下,如终端设备从无线(New Radio,NR)系统向演进的分组系统(Evolved Packet System,EPS)移动,或者终端设备从EPS向NR系统移动的情况下,如何通过对上下文的管理,实现业务的连续性尚无有效的解决方案。
发明内容
为解决上述技术问题,本发明实施例提供一种上下文管理方法、设备及存储介质,在终端设备从源网络向目标网络移动的情况下,通过对上下文的管理,实现了业务的连续性。
第一方面,本发明实施例提供一种上下文管理方法,包括在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理(Session Management,SM)上下文中是否携带用于控制平面数据传输的会话对应的承载:目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式:
第二方面,本发明实施例提供一种上下文管理方法,包括:终端设备发送信息;所述信息包括下述中的至少一项:所述终端设备在目标网络是否支持控制平面数据传输方式、以及所述终端设备在目标网络是否希望控制平面数据传输方式。
第三方面,本发明实施例提供一种上下文管理方法,包括:在终端设备从源网络向目标网络移动的情况下,源核心网网元针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
第四方面,本发明实施例提供一种上下文管理方法,包括:在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数据传输的会话,释放接入层 上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
第五方面,本发明实施例提供一种上下文管理方法,所述方法包括:在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设备发送的第三指示信息释放或者不释放所述接入层上下文。
第六方面,本发明实施例提供一种源核心网网元,所述源核心网网元包括:第一处理单元,配置为在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在SM上下文中是否携带用于控制平面数据传输的会话对应的承载:
目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
第七方面,本发明实施例提供一种终端设备,所述终端设备包括:
第一发送单元,配置为发送信息;所述信息包括下述中的至少一项:所述终端设备在目标网络是否支持控制平面数据传输方式、以及所述终端设备在目标网络是否希望控制平面数据传输方式。
第八方面,本发明实施例提供一种源核心网网元,包括:第二发送单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
第九方面,本发明实施例提供一种终端设备,所述终端设备包括:
第二处理单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,释放接入层上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
第十方面,本发明实施例提供一种终端设备,所述终端设备包括:
第三处理单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设备发送的第三指示信息释放或者不释放所述接入层上下文。
第十一方面,本发明实施例提供一种终端设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行上述终端设备执行上下文管理方法的步骤。
第十二方面,本发明实施例提供一种源核心网网元,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行上述源核心网网元执行的上下文管理方法的步骤。
第十三方面,本发明实施例提供一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现上述终端设备执行的上下文管理方法。
第十四方面,本发明实施例提供一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现上述源核心网网元执行的上下文管理方法。
本发明实施例提供的上下文管理方法,包括:在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理SM上下文中是否携带用于控制平面数据传输的会话对应的承载:目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。以及,终端设备从源网络向目标网络移动的情况下,源核心网网元针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。如此,在终端设备从源网络向目标网络移动的情况下通过对上下文的管理,实现业务的连续性。
附图说明
图1为本发明实施例通信系统的组成结构示意图;
图2为本发明实施例提供的上下文管理方法的可选处理流程一;
图3为本发明实施例提供的上下文管理的处理流程示意图二;
图4为本发明实施例提供的上下文管理的处理流程示意图三;
图5为本发明实施例提供的上下文管理的处理流程示意图四;
图6为本发明实施例提供的上下文管理的处理流程示意图五;
图7为本发明实施例提供的上下文管理的处理流程示意图六;
图8为本发明实施例提供的上下文管理的处理流程示意图七;
图9为本发明实施例提供的源核心网网元的一种可选组成结构示意图;
图10为本发明实施例提供的终端设备的一种可选组成结构示意图;
图11为本发明实施例提供的源核心网网元的另一种可选组成结构示意图;
图12为本发明实施例提供的终端设备的另一种可选组成结构示意图;
图13为本发明实施例提供的终端设备的再一种可选组成结构示意图;
图14为本发明实施例电子设备的硬件组成结构示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点和技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
在对本发明实施例提供的上下文管理方法进行详细说明之前,先对相关技术中下行文管理方法进行简要说明。
相关技术中,NR系统和演进的分组系统(Evolved Packet System,EPS)中,为了节省传输小量数据带来的信令开销,引入了控制平面的优化方式和用户平面的优化方式。在控制平面的优化方式中,上下行数据封装在非接入层(Non-Access Stratum,NAS)消息中在终端设备和网络设备之间传递;控制平面的优化方式不需要为数据传输建立用户平面的连接。
在用户平面的优化方式中,在终端设备回到空闲状态的情况下,终端设备的PDU会话处于激活状态,终端设备的移动管理上下文保存在接入和移动性管理(Access and Mobility Function,AMF)实体,会话管理上下文保存在会话管理功能(Session Management Function,SMF)实体,接入层上下文保持在网络设备,同时终端设备也保持这些上下文。在终端设备有数据需要传输的情况下,终端设备采用恢复连接过程来恢复终端设备的上下文,并直接向网络设备发送数据。
当终端设备在5GS和EPS之间移动时,需要执行5GS和EPS之间的互操作过程。在互操作过程中,如何进行上下文管理目前尚无有效解决方案。
基于上述问题,本发明提供一种上下文管理的方法,本申请实施例的上下文管理的方法可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access,WiMAX)通信系统或5G系统等。
示例性的,本申请实施例应用的通信系统100如图1所示。该通信系统100可以包括网络设备110,网络设备110可以是与终端设备120(或称为通信终端、终端)通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备进行通信。可选地,该网络设备110可以是GSM系统或CDMA系统中的基站(Base Transceiver Station,BTS),也可以是WCDMA系统中的基站(NodeB,NB),还可以是LTE系统中的演进型基站(Evolutional Node B,eNB或eNodeB),或者是云无线接入网络(Cloud Radio Access Network,CRAN)中的无线控制器,或者该网络设备可以为移动交换中心、中继站、接入点、车载设备、可穿戴设备、集线器、交换机、网桥、路由器、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)中的网络设备等。
该通信系统100还包括位于网络设备110覆盖范围内的至少一个终端设备120。作为在此使用的“终端设备”包括但不限于经由有线线路连接,如经由公共交换电话网络(Public Switched Telephone Networks,PSTN)、数字用户线路(Digital Subscriber Line,DSL)、数字电缆、直接电缆连接;和/或另一数据连接/网络;和/或经由无线接口,如,针对蜂窝网络、无线局域网(Wireless Local Area Network,WLAN)、诸如DVB-H网络的数字电视网络、卫星网络、AM-FM广播发送器;和/或另一终端设备的被设置成接收/发送通信信号的装置;和/或物联网(Internet of Things,IoT)设备。被设置成通过无线接口通信的终端设备可以被称为“无线通信终端”、“无线终端”或“移动终端”。移动终端的示例包括但不限于卫星或蜂窝电话;可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communications System,PCS)终端;可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的PDA;以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。终端设备可以指接入终端、用户设备(User Equipment,UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的终端设备或者未来演进的PLMN中的终端设备等。
可选地,终端设备120之间可以进行终端直连(Device to Device,D2D)通信。
可选地,5G系统或5G网络还可以称为新无线(New Radio,NR)系统或NR网络。
图1示例性地示出了一个网络设备和两个终端设备,可选地,该通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例中网络/系统中具有通信功能的设备可称为通信设备。以图1示出的通信系统100为例,通信设备可包括具有通信功能的网络设备110和终端设备120,网络设备110和终端设备120可以为上文所述的具体设备,此处不再赘述;通信设备还可包括通信系统100中的其他设备,例如网络控制器、移动管理实体等其他网络实体,本申请实施例中对此不做限定。
本发明实施例提供的上下文管理方法的可选处理流程一,如图2所示,包括以下步骤:
步骤S201,在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在SM上下文中是否携带用于控制平面数据传输的会话对应的承载:
目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
在一些实施例中,以终端设备在空闲状态下,从源网络移动到目标网络为例:所述源核心网网元在下述至少一种情况下,确定所述SM上下文中携带用于控制平面数据传输的会话对应的承载:所述目标核心网网元支持控制平面传输数据的能力信息、所述终端设备在所述目标网络支持控制平面数据传输方式、以及所述终端设备在所述目标网络希望控制平面数据传输方式。在具体实施时,所述核心网网元为SMF时,终端设备将所述终端设备在所述目标网络是否支持控制平面数据传输方式,和/或所述终端设备在所述目标网络是否希望控制平面数据传输方式发送至AMF实体;目标核心网网元(如MME)将所述目标核心网网元是否支持控制平面传输数据的能力信息发送至AMF实体。AMF实体将接收到的所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制 平面传输数据的能力信息发送至SMF实体。
下面以源网络为5GS,目标网络为EPS为例,终端设备从5GS移动到EPS的情况下,上下文管理的处理流程示意图二,如图3所示:
步骤S300,终端设备在5GS中建立用户控制平面数据传输的PDU会话。
在一些实施例中,若PDU会话为只能用于控制平面数据传输的会话,目标网络(EPS)系统支持控制平面数据传输方式,则源核心网网元(SMF)不为PDU会话分配EPS承载。如果EPS不支持控制平面数据传输方式,则SMF为PDU会话分配承载。并且,SMF分配EPS承载标识,或者SMF要求AMF分配EPS承载标识。可选地,EPS承载为可以是默认承载。
在可选实施例中,执行步骤S300之前,终端设备将终端设备在所述目标网络是否支持控制平面数据传输方式,和/或所述终端设备在所述目标网络是否希望控制平面数据传输方式发送至AMF实体。
步骤S301~步骤S304,终端设备发起TAU过程。
需要说明的是,在可选实施例中,在步骤S304中,目标核心网网元MME将目标核心网网元是否支持控制平面传输数据的能力信息发送至AMF实体。
步骤S305,AMF实体向SMF实体请求提供SM上下文。
本发明实施例中,SM上下文包括EPS承载的上下文。AMF实体向SMF实体请求提供SM上下文的具体实现过程包括步骤S305a、S305b和S305c。其中,在步骤S305a中,AMF实体将终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制平面传输数据的能力信息中的至少一种发送至SMF实体。
SMF实体根据接收到的AMF发的信息确定在SM上下文中是否携带用于控制平面数据传输的会话对应的承载。在具体实施时,所述终端设备在所述目标网络不支持控制平面数据传输方式、或所述终端设备在所述目标网络不希望控制平面数据传输方式、或所述目标核心网网元不支持控制平面传输数据的能力信息的情况下,SMF实体确定所述SM上下文中携带用于控制平面数据传输的会话对应的承载;并且由SMF实体分配相应的承载标识,或者SMF实体请求AMF实体分配相应的承载标识。此时,用于控制平面数据传输的会话对应的承载可以为默认承载。在可选实施例中,用于控制平面数据传输的会话对应的承载以及对应的承载标识还可以在步骤S300中进行分配。若在步骤S300中分配了用于控制平面数据传输的会话对应的承载以及对应的承载标识,在步骤S305 中则无需重复分配。可以理解为,用于控制平面数据传输的会话对应的承载以及对应的承载标识既可以在图3所示的步骤S300中进行分配,也可以在图3所示的步骤S305中进行分配。
所述目标核心网网元支持控制平面传输数据的能力信息、或所述终端设备在所述目标网络支持控制平面数据传输方式、或所述终端设备在所述目标网络希望控制平面数据传输方式的情况下,SMF实体确定所述SM上下文中不携带用于控制平面数据传输的会话对应的承载。
本发明实施例中,SMF实体只需要确定终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及所述目标核心网网元是否支持控制平面传输数据的能力信息中的任意一项,便能够确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载。
步骤S306,AMF实体向MME发送上下文响应。
步骤S307,AMF实体与HSS/UDM、AMF实体与终端设备进行鉴权/认证。
步骤S308,MME向AMF实体发送上下文确认。
步骤S309,MME向S-GW发送创建会话请求。
步骤S310,S-GW向P-GW-C/SMF发送修改承载请求。
步骤S311,P-GW-C/SMF与P-GW-U/UPF之间进行N4会话修改。
步骤S312,P-GW-C/SMF向S-GW发送修改承载响应。
步骤S313,S-GW向MME发送创建会话响应。
步骤S314,MME与HSS/UDM进行更新区域。
步骤S315,HSS/UDM向AMF发送Nudm UECM注销通知。
步骤S316,HSS/UDM向MME发送更新区域确认。
步骤S317,MME向终端设备发送TAU接受消息。
步骤S318,终端设备向MME发送TAU完成消息。
步骤S319,初始化专用承载。
在另一些实施例中,终端设备在发起跟踪区更新(Tracking Area Update,,TAU)过程中,将终端设备在所述目标网络支持控制平面数据传输方式、和终端设备在所述目标网络希望控制平面数据传输方式中的至少一项发送至目标核心网网元(MME)。一种实现方式是:目标核心网网元(MME)将接收的信息发送至AMF实体。AMF实体将接收的信息转发至SMF实体,由SMF实体确定SM上下文中是否携带用于控制平面数 据传输的会话对应的承载;或者AMF实体根据接收的消息确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载,AMF实体再将确定的结果发送至SMF实体。另一种实现方式是由目标核心网网元(MME)根据接收的消息确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载,并将确定的结果发送至AMF实体,再由AMF发送至SMF实体。
下面以源网络为5GS,目标网络为EPS为例,终端设备从5GS移动到EPS的情况下,上下文管理的处理流程示意图三,如图4所示:
步骤S400,终端设备在5GS中建立用户控制平面数据传输的PDU会话。
在一些实施例中,若PDU会话为只能用于控制平面数据传输的会话,目标网络(EPS)系统支持控制平面数据传输方式,则源核心网网元(SMF)不为PDU会话分配EPS承载。如果EPS不支持控制平面数据传输方式,则SMF为PDU会话分配承载。并且,SMF分配EPS承载标识,或者SMF要求AMF分配EPS承载标识。可选地,EPS承载为可以是默认承载。
步骤S401~步骤S404,终端设备发起TAU过程。
本发明实施例中,在步骤S401中,终端设备将终端设备在所述目标网络支持控制平面数据传输方式、和终端设备在所述目标网络希望控制平面数据传输方式中的至少一项发送至目标核心网网元(MME)。可以理解为,终端设备通过目标网络上报终端设备在所述目标网络支持控制平面数据传输方式、和终端设备在所述目标网络希望控制平面数据传输方式中的至少一项。
步骤S405,AMF实体向SMF实体请求提供SM上下文。
在具体实施时,AMF实体将终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制平面传输数据的能力信息中的至少一种发送至SMF实体。或者,AMF实体根据终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制平面传输数据的能力信息中的至少一种,确定SM上下文是否携带用于控制平面数据传输的会话对应的承载;并将SM上下文是否携带用于控制平面数据传输的会话对应的承载通过第一指示信息发送至SMF实体。或者,AMF实体在步骤S404中接收到SM上下文是否携带用于控制平面数据传输的会话对应的承载的指示信息,发送至SMF实体;其特征,SM上下文是否携带用于控制平面数据传输的会话对应的承载,由MME根据终端 设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制平面传输数据的能力信息中的至少一种确定。
步骤S406~步骤S419的处理过程与现有技术中终端设备从5GS移动到EPS的处理过程相同,这里不再赘述。
在又一些实施例中,在所述终端设备从源网络移动到目标网络的情况下,所述终端设备向目标核心网网元发送第二指示信息,所述第二指示信息用于指示所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
以源网络为5GS,目标网络为EPS为例,终端设备从5GS移动到EPS的情况下,终端设备在本地删除只能用于控制平面的PDU会话。终端设备在移动到EPS的情况下,终端设备发起初始注册过程,重新建立PDN连接,并向网络设备目标核心网网元(MME)指示终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。需要说明的是,在前述图3和图4所示的实施例中,终端设备在从源网络移动到目标网络的情况下,不删除只能用于控制平面的PDU会话。
还有一些实施例中,所述SMF实体与所述AMF实体之间的通信基于源网络的接入网发送的切换请求消息。其中,所述SMF实体与所述AMF实体之间的通信包括:SMF实体与AMF实体之间传递的终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及目标核心网网元是否支持控制平面传输数据的能力信息中的至少一种。或者所述SMF实体与所述AMF实体之间的通信包括:SM上下文中是否携带用于控制平面数据传输的会话对应的承载。
下面以源网络为5GS,目标网络为EPS为例,终端设备从5GS移动到EPS的情况下,上下文管理的处理流程示意图三,如图4所示:
所述SMF实体与所述AMF实体之间的通信是指图4所示的步骤S402a~步骤S402c。
源网络的接入网发送的切换请求消息是指图4所示的步骤S501:NR-RAN向AMF实体发送切换请求(Handover required)消息,所述Handover required消息中携带据终端设备在所述目标网络是否支持控制平面数据传输方式、和所述终端设备在所述目标网 络是否希望控制平面数据传输方式中的至少一种。AMF实体根据接收的信息确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载;或者AMF实体将接收的信息发送至SMF实体,由SMF实体确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载。在具体实施时,如何确定SM上下文中是否携带用于控制平面数据传输的会话对应的承载,以及确定SM上下文中携带用于控制平面数据传输的会话对应的承载的情况下,如何分配对应的承载标识与上述各实施例相同,这里不再赘述。
上述图2至图4所示的各实施例为控制平面优化数据传输的互操作流程,下面基于用户平面优化数据传输的互操作流程,对本发明实施例上下文管理方法进行说明。
本发明实施例提供的上下文管理方法的可选处理流程四,如图5所示,包括以下步骤:
步骤S601,在终端设备从源网络向目标网络移动的情况下,源核心网网元针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
在一些实施例中,所述第一命令用于指示源无线接入网网元释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源无线接入网网元释放上下文。
其中,所述上下文包括下述中的至少一项:N3上下文、接入层上下文和终端设备的NG-AP上下文。
所述第一命令,还用于携带释放上下文的原因。其中,所述释放上下文的原因包括:终端设备移动至其他网络、终端设备离开等。
下面以源网络为5GS,目标网络为EPS为例,终端设备从5GS移动到EPS的情况下,上下文管理的处理流程示意图五,如图6所示:
当AMF实体接收到HSS/UDM发送的终端设备从5GS移动到EPS的情况下,针对用于用户平面数据传输的PDU会话,AMF实体执行下述两种方案中的任意一种:
AMF实体触发AN释放过程,释放终端设备的NG-AP上下文、N3上下文、以及接入层上下文。在具体实施时,在图6所示的步骤S702中,AMF实体向RAN网元发送释放命令,所述释放命令指示RAN网元本地释放终端设备的上下文。可选地,所示释放命令中携带释放原因,例如终端设备移动到其他网络、或者终端设备离开。RAN网元接收到释放命令之后,本地释放终端设备的上下文。
或者,AMF实体不触发终端设备上下文的释放。在终端设备移动到目标网络的情况下,终端设备、源接入网、以及源核心网继续保存终端设备针对用于用户平面数据传 输的PDU会话对应的NG-AP上下文、N3上下文、以及接入层上下文。当终端设备从目标网络返回到源网络之后,重新恢复用于用户平面数据传输的PDU会话的接入层上下文。在可选实施例中,核心网网元启动一个定时器,在定时器运行期间(即定时器不超时的情况下),保持NG-AP上下文、N3上下文、以及接入层上下文。在定时器超时的情况下,触发释放终端设备的上下文。
本发明实施例提供的上下文管理方法的可选处理流程六,如图7所示,包括以下步骤:
步骤S801,在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数据传输的会话,释放接入层上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
在具体实施时,在所述定时器未超时的情况下,所述终端设备保留所述接入层上下文。
本发明实施例中,所述定时器由源网络设备配置;其中,源网络设备为源接入网网元或源核心网网元。针对5GS,核心网网元为SMF实体、或AMF实体;针对EPS,核心网网元为MME。
本发明实施例提供的上下文管理方法的可选处理流程七,如图8所示,包括以下步骤:
步骤S901,在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设备发送的第三指示信息释放或者不释放所述接入层上下文。
在一些实施例中,在源接入网与目标接入网为同一个接入网,或者源小区与目标小区为同一个小区的情况下,所述第三指示信息指示所述终端设备从所述源网络切换到所述目标网络的情况下,是否保留接入层上下文。
其中,所述源网络设备为源接入网网元或源核心网网元。针对5GS,核心网网元为SMF实体、或AMF实体;针对EPS,核心网网元为MME。
上述各实施例均以源网络为5GS,目标网络为EPS为例对本发明实施例提供的上下文管理方法进行说明。在实施本发明实施例提供的上下文管理方法时,也可以源网络为EPS,目标网络为5GS。当然,源网络和目标网络也可以是除5GS和EPS以外的其他的无线网络。
本发明上述各实施例提供的上下文管理方法,应用于终端设备从源网络向目标网络 移动的场景;在终端设备从源网络向目标网络移动的场景下,提供了采用控制平面优化的数据传输方式以及采用用户平面优化的数据传输方式时,终端上设备和网络设备如何处理上下文、以及如何处理终端设备的链接;从而解决了终端设备在从源网络向目标网络移动的场景下业务连续性的问题。
为实现上述上下文管理方法,本发明实施例还提供一种源核心网网元,源核心网网元1000的一种可选组成结构,如图9所示,包括:
第一处理单元1001,配置为在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理SM上下文中是否携带用于控制平面数据传输的会话对应的承载:
目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
本发明实施例中,所述第一处理单元1001,配置为在下述至少一种情况下,确定所述SM上下文中不携带用于控制平面数据传输的会话对应的承载:
所述目标核心网网元支持控制平面传输数据的能力信息、所述终端设备在所述目标网络支持控制平面数据传输方式、以及所述终端设备在所述目标网络希望控制平面数据传输方式。
本发明实施例中,所述源核心网网元为SMF实体的情况下,所述源核心网网元1000还包括:
第一接收单元1002,配置为接收接入和移动性管理功能AMF实体发送的下述信息中的至少一项:
所述终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及所述目标核心网网元是否支持控制平面传输数据的能力信息。
本发明实施例中,所述源核心网网元为会话管理功能SMF实体,所述源核心网网元1000还包括:
第二接收单元1003,配置为接收AMF实体发送的第一指示信息,所述第一指示信息用于指示所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载。
本发明实施例中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由AMF实体根据终端设备在跟踪区更新TAU请求消息中携带的至少一项下述信 息确定:
所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
本发明实施例中,所述源核心网网元为SMF实体,所述源核心网网元还包括:
第三接收单元1004,配置为接收AMF实体发送的下述信息中的至少一项:所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
所述信息携带于所述终端设备发送的TAU请求消息中,并经由目标核心网网元发送至所述AMF实体。
本发明实施例中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由目标核心网网元实体根据终端设备在TAU请求消息中携带的下述信息中的至少一项确定后,发送至所述AMF实体:
所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
本发明实施例中,所述第一处理单元1001,还配置为删除进行控制平面的PDU会话;
在所述终端设备从源网络移动到目标网络的情况下,所述终端设备向目标核心网网元发送第二指示信息,所述第二指示信息用于指示所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
本发明实施例中,所述SMF实体与所述AMF实体之间的通信基于源网络的接入网发送的切换请求消息。
本发明实施例中,所述第一处理单元1001,配置为在下述至少一种情况下,确定所述SM上下文中携带用于控制平面数据传输的会话对应的承载:
所述终端设备在所述目标网络不支持控制平面数据传输方式、所述终端设备在所述目标网络不希望控制平面数据传输方式、以及所述目标核心网网元不支持控制平面传输数据的能力信息。
本发明实施例中,所述源核心网网元为SMF实体,所述第一处理单元1001,还配 置为分配承载标识;或者还配置为请求AMF实体分配承载标识。
为实现上述上下文管理方法,本发明实施例还提供一种终端设备,终端设备2000的一种可选组成结构,如图10所示,包括:
第一发送单元2001,配置为发送信息;所述信息包括下述中的至少一项:所述终端设备在目标网络是否支持控制平面数据传输方式、以及所述终端设备在目标网络是否希望控制平面数据传输方式。
本发明实施例中,所述第一发送单元2001,配置为向源核心网网元发送信息。
本发明实施例中,所述第一发送单元2001,配置为向目标网络发送TAU请求消息,所述消息中携带所述信息。
为实现上述上下文管理方法,本发明实施例还提供一种源核心网网元,源核心网网元3000的另一种组成结构,如图11所示,包括:
第二发送单元3001,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
本发明实施例中,所述第一命令携带释放上下文的原因。
本发明实施例中,所述上下文包括下述中的至少一项:N3上下文、接入层上下文和终端设备的NG-AP上下文。
为实现上述上下文管理方法,本发明实施例还提供一种终端设备,终端设备4000的另一种组成结构,如图12所示,包括:
第二处理单元4001,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,释放接入层上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
本发明实施例中,所述第二处理单元4001,还配置为在所述定时器未超时的情况下,保留所述接入层上下文。
本发明实施例中,所述定时器由源网络设备配置。其中,所述源网络设备为源接入网网元或源核心网网元。
为实现上述上下文管理方法,本发明实施例还提供一种终端设备,终端设备5000的再一种组成结构,如图13所示,包括:
第三处理单元5001,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设 备发送的第三指示信息释放或者不释放所述接入层上下文。
本发明实施例中,在源接入网与目标接入网为同一个接入网,或者源小区与目标小区为同一个小区的情况下,所述第三指示信息指示所述终端设备从所述源网络切换到所述目标网络的情况下,是否保留接入层上下文。
本发明实施例中,所述源网络设备为源接入网网元或源核心网网元。
本发明实施例还提供一种终端设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行上述终端设备执行的上下文管理方法的步骤。
本发明实施例还提供一种源核心网网元,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行上述源核心网网元执行的上下文管理方法的步骤。
图14是本发明实施例的电子设备(终端设备和目标网络设备)的硬件组成结构示意图,电子设备6000包括:至少一个处理器6001、存储器6002和至少一个网络接口6004。电子设备6000中的各个组件通过总线系统6005耦合在一起。可理解,总线系统6005用于实现这些组件之间的连接通信。总线系统6005除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图14中将各种总线都标为总线系统6005。
可以理解,存储器6002可以是易失性存储器或非易失性存储器,也可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ROM、可编程只读存储器(PROM,Programmable Read-Only Memory)、可擦除可编程只读存储器(EPROM,Erasable Programmable Read-Only Memory)、电可擦除可编程只读存储器(EEPROM,Electrically Erasable Programmable Read-Only Memory)、磁性随机存取存储器(FRAM,ferromagnetic random access memory)、快闪存储器(Flash Memory)、磁表面存储器、光盘、或只读光盘(CD-ROM,Compact Disc Read-Only Memory);磁表面存储器可以是磁盘存储器或磁带存储器。易失性存储器可以是随机存取存储器(RAM,Random Access Memory),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(SRAM,Static Random Access Memory)、同步静态随机存取存储器(SSRAM,Synchronous Static Random Access Memory)、动态随机存取存储器(DRAM,Dynamic Random Access Memory)、同步动态随机存取存储器(SDRAM,Synchronous Dynamic Random Access Memory)、双倍数据速率同步动态随机存取存储器 (DDRSDRAM,Double Data Rate Synchronous Dynamic Random Access Memory)、增强型同步动态随机存取存储器(ESDRAM,Enhanced Synchronous Dynamic Random Access Memory)、同步连接动态随机存取存储器(SLDRAM,SyncLink Dynamic Random Access Memory)、直接内存总线随机存取存储器(DRRAM,Direct Rambus Random Access Memory)。本发明实施例描述的存储器6002旨在包括但不限于这些和任意其它适合类型的存储器。
本发明实施例中的存储器6002用于存储各种类型的数据以支持电子设备6000的操作。这些数据的示例包括:用于在电子设备6000上操作的任何计算机程序,如应用程序60022。实现本发明实施例方法的程序可以包含在应用程序60022中。
上述本发明实施例揭示的方法可以应用于处理器6001中,或者由处理器6001实现。处理器6001可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器6001中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器6001可以是通用处理器、数字信号处理器(DSP,Digital Signal Processor),或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。处理器6001可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤,可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于存储介质中,该存储介质位于存储器6002,处理器6001读取存储器6002中的信息,结合其硬件完成前述方法的步骤。
在示例性实施例中,电子设备6000可以被一个或多个应用专用集成电路(ASIC,Application Specific Integrated Circuit)、DSP、可编程逻辑器件(PLD,Programmable Logic Device)、复杂可编程逻辑器件(CPLD,Complex Programmable Logic Device)、FPGA、通用处理器、控制器、MCU、MPU、或其他电子元件实现,用于执行前述方法。
本申请实施例还提供了一种存储介质,用于存储计算机程序。
可选的,该存储介质可应用于本申请实施例中的终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中的相应流程,为了简洁,在此不再赘述。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理 器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。

Claims (54)

  1. 一种上下文管理方法,所述方法包括:
    在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理SM上下文中是否携带用于控制平面数据传输的会话对应的承载:
    目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
  2. 根据权利要求1所述的方法,其中,所述源核心网网元根据下述中的至少一项,确定在SM上下文中是否携带用于控制平面数据传输的会话对应的承载,包括:
    所述源核心网网元在下述至少一种情况下,确定所述SM上下文中不携带用于控制平面数据传输的会话对应的承载:
    所述目标核心网网元支持控制平面传输数据的能力信息、所述终端设备在所述目标网络支持控制平面数据传输方式、以及所述终端设备在所述目标网络希望控制平面数据传输方式。
  3. [根据细则91更正 11.07.2019]
    根据权利要求2所述的方法,其中,所述源核心网网元为会话管理功能SMF实体,所述方法还包括:
    所述SMF实体接收接入和移动性管理功能AMF实体发送的下述信息中的至少一项:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及所述目标核心网网元是否支持控制平面传输数据的能力信息。
  4. 根据权利要求2所述的方法,其中,所述源核心网网元为会话管理功能SMF实体,所述方法还包括:
    所述SMF实体接收AMF实体发送的第一指示信息,所述第一指示信息用于指示所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载。
  5. [根据细则91更正 11.07.2019]
    根据权利要求4所述的方法,其中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由AMF实体根据终端设备在跟踪区更新TAU请求消息中携带的至少一项下述信息确定:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
  6. [根据细则91更正 11.07.2019]
    根据权利要求2所述的方法,其中,所述源核心网网元为SMF实体,所述方法还包括:
    所述SMF实体接收AMF实体发送的下述信息中的至少一项:所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述信息携带于所述终端设备发送的TAU请求消息中,并经由目标核心网网元发送至所述AMF实体。
  7. [根据细则91更正 11.07.2019]
    根据权利要求4所述的方法,其中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由目标核心网网元实体根据终端设备在TAU请求消息中携带的下述信息中的至少一项确定后,发送至所述AMF实体:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
  8. [根据细则91更正 11.07.2019]
    根据权利要求2所述的方法,其中,所述方法还包括:所述终端设备删除进行控制平面的PDU会话;
    在所述终端设备从源网络移动到目标网络的情况下,所述终端设备向目标核心网网元发送第二指示信息,所述第二指示信息用于指示所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
  9. [根据细则91更正 11.07.2019]
    根据权利要求3至7任一项所述的方法,其中,所述SMF实体与所述AMF实体之间的通信基于源网络的接入网发送的切换请求消息。
  10. 根据权利要求1所述的方法,其中,所述源核心网网元根据下述中的至少一项, 确定所述SM上下文中是否携带用于控制平面数据传输的会话分配对应的承载,包括:
    所述源核心网网元在下述至少一种情况下,确定所述SM上下文中携带用于控制平面数据传输的会话对应的承载:
    所述终端设备在所述目标网络不支持控制平面数据传输方式、所述终端设备在所述目标网络不希望控制平面数据传输方式、以及所述目标核心网网元不支持控制平面传输数据的能力信息。
  11. 根据权利要求10所述的方法,其中,所述源核心网网元为SMF实体,所述方法还包括:
    所述SMF实体分配承载标识。
  12. 根据权利要求10所述的方法,其中,所述源核心网网元为SMF实体,所述方法还包括:
    所述SMF实体请求AMF实体分配承载标识。
  13. 一种上下文管理方法,所述方法包括:
    终端设备发送信息;所述信息包括下述中的至少一项:所述终端设备在目标网络是否支持控制平面数据传输方式、以及所述终端设备在目标网络是否希望控制平面数据传输方式。
  14. 根据权利要求13所述的方法,其中,所述终端设备发送信息,包括:
    所述终端设备向源核心网网元发送信息。
  15. 根据权利要求13所述的方法,其中,所述终端设备发送信息,包括:
    所述终端设备向目标网络发送跟踪区更新TAU请求消息,所述消息中携带所述信息。
  16. 一种上下文管理方法,所述方法包括:
    在终端设备从源网络向目标网络移动的情况下,源核心网网元针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
  17. 根据权利要求16所述的方法,其中,所述第一命令携带释放上下文的原因。
  18. 根据权利要求16或17所述的方法,其中,所述上下文包括下述中的至少一项:N3上下文、接入层上下文和终端设备的NG-AP上下文。
  19. 一种上下文管理方法,所述方法包括:
    在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数 据传输的会话,释放接入层上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
  20. 根据权利要求19所述的方法,其中,在所述定时器未超时的情况下,所述终端设备保留所述接入层上下文。
  21. 根据权利要求19或20所述的方法,其中,所述定时器由源网络设备配置。
  22. [根据细则91更正 11.07.2019]
    根据权利要求21所述的方法,其中,所述源网络设备为源接入网网元或源核心网网元。
  23. 一种上下文管理方法,所述方法包括:
    在终端设备从源网络向目标网络移动的情况下,所述终端设备针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设备发送的第三指示信息释放或者不释放所述接入层上下文。
  24. 根据权利要求23所述的方法,其中,在源接入网与目标接入网为同一个接入网,或者源小区与目标小区为同一个小区的情况下,所述第三指示信息指示所述终端设备从所述源网络切换到所述目标网络的情况下,是否保留接入层上下文。
  25. [根据细则91更正 11.07.2019]
    根据权利要求23或24所述的方法,其中,所述源网络设备为源接入网网元或源核心网网元。
  26. 一种源核心网网元,包括:
    第一处理单元,配置为在终端设备从源网络向目标网络移动的情况下,源核心网网元根据下述中的至少一项,确定在会话管理SM上下文中是否携带用于控制平面数据传输的会话对应的承载:
    目标核心网网元是否支持控制平面传输数据的能力信息、所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
  27. 根据权利要求26所述的源核心网网元,其中,所述第一处理单元,配置为在下述至少一种情况下,确定所述SM上下文中不携带用于控制平面数据传输的会话对应的承载:
    所述目标核心网网元支持控制平面传输数据的能力信息、所述终端设备在所述目标网络支持控制平面数据传输方式、以及所述终端设备在所述目标网络希望控制平面数据 传输方式。
  28. 根据权利要求27所述的源核心网网元,其中,所述源核心网网元为会话管理功能SMF实体的情况下,所述源核心网网元还包括:
    第一接收单元,配置为接收接入和移动性管理功能AMF实体发送的下述信息中的至少一项:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、所述终端设备在所述目标网络是否希望控制平面数据传输方式、以及所述目标核心网网元是否支持控制平面传输数据的能力信息。
  29. 根据权利要求27所述的源核心网网元,其中,所述源核心网网元为会话管理功能SMF实体,所述源核心网网元还包括:
    第二接收单元,配置为接收AMF实体发送的第一指示信息,所述第一指示信息用于指示所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载。
  30. 根据权利要求29所述的源核心网网元,其中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由AMF实体根据终端设备在跟踪区更新TAU请求消息中携带的至少一项下述信息确定:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
  31. 根据权利要求27所述的源核心网网元,其中,所述源核心网网元为会话管理功能SMF实体,所述源核心网网元还包括:
    第三接收单元,配置为接收AMF实体发送的下述信息中的至少一项:所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述信息携带于所述终端设备发送的TAU请求消息中,并经由目标核心网网元发送至所述AMF实体。
  32. 根据权利要求29所述的源核心网网元,其中,所述SMF实体是否为用于控制平面数据传输的会话分配对应的承载,由目标核心网网元实体根据终端设备在TAU请求消息中携带的下述信息中的至少一项确定后,发送至所述AMF实体:
    所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式;
    所述TAU请求消息中携带的信息经由目标核心网网元发送至所述AMF实体。
  33. 根据权利要求27所述的源核心网网元,其中,所述第一处理单元,还配置为删除进行控制平面的PDU会话;
    在所述终端设备从源网络移动到目标网络的情况下,所述终端设备向目标核心网网元发送第二指示信息,所述第二指示信息用于指示所述终端设备在所述目标网络是否支持控制平面数据传输方式、以及所述终端设备在所述目标网络是否希望控制平面数据传输方式。
  34. 根据权利要求28至32任一项所述的源核心网网元,其中,所述SMF实体与所述AMF实体之间的通信基于源网络的接入网发送的切换请求消息。
  35. 根据权利要求26所述的源核心网网元,其中,所述第一处理单元,配置为在下述至少一种情况下,确定所述SM上下文中携带用于控制平面数据传输的会话对应的承载:
    所述终端设备在所述目标网络不支持控制平面数据传输方式、所述终端设备在所述目标网络不希望控制平面数据传输方式、以及所述目标核心网网元不支持控制平面传输数据的能力信息。
  36. 根据权利要求35所述的源核心网网元,其中,所述源核心网网元为SMF实体,所述第一处理单元,还配置为分配承载标识。
  37. 根据权利要求35所述的源核心网网元,其中,所述源核心网网元为SMF实体,所述第一处理单元,还配置为请求AMF实体分配承载标识。
  38. 一种终端设备,所述终端设备包括:
    第一发送单元,配置为发送信息;所述信息包括下述中的至少一项:所述终端设备在目标网络是否支持控制平面数据传输方式、以及所述终端设备在目标网络是否希望控制平面数据传输方式。
  39. 根据权利要求38所述的终端设备,其中,所述第一发送单元,配置为向源核心网网元发送信息。
  40. 根据权利要求38所述的终端设备,其中,所述第一发送单元,配置为向目标网络发送TAU请求消息,所述消息中携带所述信息。
  41. 一种源核心网网元,包括:
    第二发送单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话发送第一命令,所述第一命令用于指示源网络释放上下文,或者 所述第一命令用于指示在定时器超时的情况下,所述源网络释放上下文。
  42. 根据权利要求41所述的源核心网网元,其中,所述第一命令携带释放上下文的原因。
  43. 根据权利要求41或42所述的源核心网网元,其中,所述上下文包括下述中的至少一项:N3上下文、接入层上下文和终端设备的NG-AP上下文。
  44. 一种终端设备,所述终端设备包括:
    第二处理单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,释放接入层上下文;或者在定时器超的情况下,所述终端设备释放接入层上下文。
  45. 根据权利要求44所述的终端设备,其中,所述第二处理单元,还配置为在所述定时器未超时的情况下,保留所述接入层上下文。
  46. 根据权利要求44或45所述的终端设备,其中,所述定时器由源网络设备配置。
  47. 根据权利要求46所述的终端设备,其中,所述源网络设备为源接入网网元或源核心网网元。
  48. 一种终端设备,所述终端设备包括:
    第三处理单元,配置为在终端设备从源网络向目标网络移动的情况下,针对用于用户平面数据传输的会话,不释放接入层上下文;或者所述终端设备根据源网络设备发送的第三指示信息释放或者不释放所述接入层上下文。
  49. 根据权利要求48所述的终端设备,其中,在源接入网与目标接入网为同一个接入网,或者源小区与目标小区为同一个小区的情况下,所述第三指示信息指示所述终端设备从所述源网络切换到所述目标网络的情况下,是否保留接入层上下文。
  50. 根据权利要求48或49所述的终端设备,其中,所述源网络设备为源接入网网元或源核心网网元。
  51. 一种源核心网网元,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,
    所述处理器用于运行所述计算机程序时,执行权利要求1至12任一项所述的方法的步骤;
    或者,执行权利要求16至18任一项所述的方法的步骤。
  52. 一种网络设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,
    所述处理器用于运行所述计算机程序时,执行权利要求13至15任一项所述的方法的步骤;
    或者,执行权利要求19至22任一项所述的方法的步骤;
    或者,执行权利要求23至25任一项所述的方法的步骤。
  53. 一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现权利要求1至12任一项所述的方法;
    或者,实现权利要求16至18任一项所述的方法。
  54. 一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现权利要求13至15任一项所述的方法;
    或者,执行权利要求19至22任一项所述的方法;
    或者,执行权利要求23至25任一项所述的方法。
PCT/CN2019/085906 2019-05-07 2019-05-07 一种上下文管理方法、设备及存储介质 WO2020223909A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980046748.6A CN112425206B (zh) 2019-05-07 2019-05-07 一种上下文管理方法、设备及存储介质
PCT/CN2019/085906 WO2020223909A1 (zh) 2019-05-07 2019-05-07 一种上下文管理方法、设备及存储介质

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/085906 WO2020223909A1 (zh) 2019-05-07 2019-05-07 一种上下文管理方法、设备及存储介质

Publications (1)

Publication Number Publication Date
WO2020223909A1 true WO2020223909A1 (zh) 2020-11-12

Family

ID=73050586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/085906 WO2020223909A1 (zh) 2019-05-07 2019-05-07 一种上下文管理方法、设备及存储介质

Country Status (2)

Country Link
CN (1) CN112425206B (zh)
WO (1) WO2020223909A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494884A (zh) * 2008-01-21 2009-07-29 中兴通讯股份有限公司 切换异常处理方法
WO2018063453A1 (en) * 2016-09-30 2018-04-05 Intel IP Corporation Core network overload control for control plane evolved packet system
WO2018126461A1 (zh) * 2017-01-06 2018-07-12 华为技术有限公司 一种网络切换方法及相关设备
WO2018171916A1 (en) * 2017-03-21 2018-09-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and node for handling handover in 5g networks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018169341A1 (en) * 2017-03-16 2018-09-20 Samsung Electronics Co., Ltd. Network-initiated pdu session connection update method between terminal and network
AU2018255075B2 (en) * 2017-04-19 2020-02-06 Lg Electronics Inc. Method for processing PDU session establishment procedure and AMF node
CN109257788B (zh) * 2017-07-14 2021-06-22 华为技术有限公司 网络切换方法及装置
CN109392042B (zh) * 2017-08-14 2021-10-26 华为技术有限公司 一种会话管理方法、异系统互操作的方法及网络装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101494884A (zh) * 2008-01-21 2009-07-29 中兴通讯股份有限公司 切换异常处理方法
WO2018063453A1 (en) * 2016-09-30 2018-04-05 Intel IP Corporation Core network overload control for control plane evolved packet system
WO2018126461A1 (zh) * 2017-01-06 2018-07-12 华为技术有限公司 一种网络切换方法及相关设备
WO2018171916A1 (en) * 2017-03-21 2018-09-27 Telefonaktiebolaget Lm Ericsson (Publ) Method and node for handling handover in 5g networks

Also Published As

Publication number Publication date
CN112425206B (zh) 2023-10-24
CN112425206A (zh) 2021-02-26

Similar Documents

Publication Publication Date Title
WO2020034229A1 (zh) 一种信息传输方法及装置、通信设备
EP3846372B1 (en) Data flow processing method and device, and storage medium
WO2021000331A1 (zh) 一种数据传输方法及装置、通信设备
WO2020150875A1 (zh) 一种资源管理方法、设备及存储介质
WO2020223910A1 (zh) 一种终端设备的能力上报方法、设备及存储介质
US11737161B2 (en) Method for indicating protocol data unit session status, terminal device, and non-transitory computer-readable storage medium
WO2018068216A1 (zh) 会话管理方法及网元
WO2021068174A1 (zh) 一种小区连接方法、电子设备及存储介质
US20220061075A1 (en) Information transmission method and apparatus, and network device
CN114125969B (zh) 一种连接重建方法、终端设备及存储介质
TW202025815A (zh) 無線通訊方法和基站
WO2020087308A1 (zh) 一种业务处理方法、设备及存储介质
WO2020223909A1 (zh) 一种上下文管理方法、设备及存储介质
CN112715038B (zh) 一种参数配置方法及装置、网络设备
WO2020223972A1 (zh) 一种无线资源控制消息的处理方法、设备及存储介质
WO2022213263A1 (zh) 无线通信方法、设备及存储介质
KR20210102288A (ko) 데이터 처리 방법, 기기 및 저장 매체
WO2020223898A1 (zh) 一种信息传输方法及装置、网络设备
WO2022027638A1 (zh) 一种数据传输方法、电子设备及存储介质
WO2020252670A1 (zh) 一种终端设备的能力确定方法、设备及存储介质
WO2023197320A1 (zh) 上行定位参考信号的配置方法、装置、设备及存储介质
CN112514450B (zh) 一种数据处理方法、设备及存储介质
WO2022217540A1 (zh) 无线通信方法、设备及存储介质
CN113078990B (zh) 一种数据处理方法、终端设备及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19927672

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19927672

Country of ref document: EP

Kind code of ref document: A1