WO2021203398A1 - 会话处理方法、设备及存储介质 - Google Patents

会话处理方法、设备及存储介质 Download PDF

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Publication number
WO2021203398A1
WO2021203398A1 PCT/CN2020/084121 CN2020084121W WO2021203398A1 WO 2021203398 A1 WO2021203398 A1 WO 2021203398A1 CN 2020084121 W CN2020084121 W CN 2020084121W WO 2021203398 A1 WO2021203398 A1 WO 2021203398A1
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WIPO (PCT)
Prior art keywords
mbs session
network device
session
mbs
network element
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Application number
PCT/CN2020/084121
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English (en)
French (fr)
Inventor
刘建华
杨皓睿
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 CN202080097038.9A priority Critical patent/CN115136624A/zh
Priority to KR1020227033926A priority patent/KR20220166275A/ko
Priority to CN202310060674.XA priority patent/CN116056255A/zh
Priority to MX2022012627A priority patent/MX2022012627A/es
Priority to CA3173434A priority patent/CA3173434A1/en
Priority to PCT/CN2020/084121 priority patent/WO2021203398A1/zh
Priority to EP20929906.4A priority patent/EP4109935A4/en
Priority to JP2022558581A priority patent/JP2023528138A/ja
Priority to BR112022020222A priority patent/BR112022020222A2/pt
Publication of WO2021203398A1 publication Critical patent/WO2021203398A1/zh
Priority to US17/955,516 priority patent/US20230026061A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/32—Release of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a session processing method, device, and storage medium.
  • the data network can send data to the terminal through a user plane unicast connection established with the terminal.
  • the existing 5G network system does not support the multicast broadcast transmission mechanism for the time being. If the data network needs to send the same data to multiple terminals, the user plane unicast connection needs to be used to send the same data to a group of terminals, resulting in a waste of network resources .
  • the embodiments of the present application provide a session processing method, device, and storage medium to improve the utilization rate of network resources.
  • an embodiment of the present application provides a session processing method, including: an access network device determines to deactivate a multicast broadcast service MBS session, and sends an MBS session suspension request to a core network device; the access network device receives The MBS session suspension response of the core network device.
  • an embodiment of the present application provides a session processing method, including: a session management function SMF network element determines to deactivate a multicast broadcast service MBS session, and sends an MBS session suspension request to an access network device; the SMF network element Receiving the MBS session suspension response of the access network device.
  • an embodiment of the present application provides a session processing method, including: the access network device determines to activate the MBS session, and sends an MBS session activation request to the core network device; the access network device receives the MBS of the core network device Session activation response.
  • an embodiment of the present application provides a session processing method, including: an SMF network element determines to activate a multicast broadcast service MBS session, and sends an MBS session activation request to an access network device; the SMF network element receives the access The MBS session activation response of the network device.
  • an embodiment of the present application provides an access network device, including: a processing module for determining to deactivate a multicast broadcast service MBS session; a sending module for sending an MBS session suspension request to a core network device; receiving The module is used to receive the MBS session suspension response of the core network device.
  • an embodiment of the present application provides a session management device, including: a processing module for determining to deactivate a multicast broadcast service MBS session; a sending module for sending an MBS session suspension request to an access network device; receiving The module is used to receive the MBS session suspension response of the access network device.
  • an embodiment of the present application provides an access network device, which is characterized by including: a processing module, configured to determine to activate an MBS session; a sending module, configured to send an MBS session activation request to a core network device; and a receiving module, It is used to receive the MBS session activation response of the core network device.
  • an embodiment of the present application provides a session management device, including: a processing module, configured to determine to activate a multicast broadcast service MBS session; a sending module, configured to send an MBS session activation request to an access network device; a receiving module, Used to receive the MBS session activation response of the access network device.
  • an embodiment of the present application provides an access network device, including: a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, The processor is caused to run the computer program to execute the method according to any one of the first aspect or the method according to any one of the third aspect.
  • the foregoing processor may be a chip.
  • an embodiment of the present application provides a session management device, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that The processor runs the computer program to execute the method according to any one of the second aspect or the method according to any one of the fourth aspect.
  • the foregoing processor may be a chip.
  • an embodiment of the present application provides a storage medium, where the storage medium includes a computer program, and the computer program is used to implement the method according to any one of the first aspect, or as any one of the third aspect. The method described in the item.
  • an embodiment of the present application provides a storage medium, where the storage medium includes a computer program, and the computer program is used to implement the method according to any one of the second aspect, or as any one of the fourth aspect. The method described in the item.
  • an embodiment of the present application provides a communication system, including the access network device as described in the ninth aspect and the session management device as described in the tenth aspect.
  • the embodiments of the present application provide a session processing method, device, and storage medium for improving the utilization of MBS session resources.
  • the method includes: when it is determined that there is no data transmission or no UE access in the active MBS session, Initiate the MBS session suspension process, and suspend the MBS session to release the MBS session resources; when it is determined that the MBS session in the deactivated state has data transmission or UE access, the MBS session activation process is initiated to activate or restart the MBS session resources.
  • the MBS session resources include air interface resources, and tunnel resources between access network equipment and core network equipment. The above process of activating and deactivating the MBS session can effectively utilize network resources, avoid waste of network resources, and improve system communication quality.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of this application.
  • FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the application.
  • FIG. 3 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 4 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 5 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 6 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 7 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 8 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 9 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 10 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of an access network device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a session management device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of an access network device provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of a session management device provided by an embodiment of this application.
  • 15 is a schematic diagram of the hardware structure of an access network device provided by an embodiment of this application.
  • 16 is a schematic diagram of the hardware structure of a session management device provided by an embodiment of the application.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the application.
  • the 5G network architecture released by the 3GPP standard group includes: terminal (user equipment, UE), access network (including radio access network, RAN or access network, AN) that supports 3GPP technology, and user plane functions (user equipment, or access network, AN).
  • plane function, UPF network element
  • AMF access and mobility management function
  • SMF session management function
  • PCF policy control function
  • DN application function
  • DN data network
  • the 5G network architecture shown in FIG. 1 does not constitute a limitation on the 5G network architecture.
  • the 5G network architecture may include more or fewer network elements than those shown in the figure, or Combine certain network elements, etc.
  • AN or RAN is represented by (R)AN.
  • the access network is RAN as an example for description.
  • the terminal in the embodiment of the application may be a user equipment (UE), a handheld terminal, a notebook computer, a subscriber unit, a cellular phone, a smart phone, a wireless data card, and a personal computer.
  • Digital assistant personal digital assistant, PDA
  • PDA personal digital assistant
  • modem wireless modem
  • handheld device handheld
  • laptop computer cordless phone
  • WLL wireless local loop
  • WLL wireless local loop
  • MTC machine type communication
  • handheld devices with wireless communication functions computing devices, processing devices connected to wireless modems, drones, in-vehicle devices, wearable devices, and the Internet of Things Terminals, virtual reality devices, terminal devices in the future 5G network, terminals in the future evolved public land mobile network (PLMN), etc.
  • PLMN public land mobile network
  • the access network equipment in the embodiments of this application is the access equipment that the terminal accesses to the network architecture in a wireless manner. It is mainly responsible for radio resource management, quality of service (QoS) management, data compression and data compression on the air interface side. Encryption, etc.
  • a base station NodeB an evolved base station eNodeB, a 5G mobile communication system or a base station in a new radio (NR) communication system, a base station in a future mobile communication system, etc.
  • NR new radio
  • UPF network elements, AMF network elements, SMF network elements, and PCF network elements are network elements of the 3GPP core network (abbreviated as core network network elements).
  • UPF network elements can be called user plane function network elements, which are mainly responsible for the transmission of user data, and other network elements can be called control plane function network elements, which are mainly responsible for authentication, authentication, registration management, session management, mobility management, and policy control Etc. to ensure reliable and stable transmission of user data.
  • the UPF network elements can be used to forward and receive terminal data.
  • the UPF network element can receive service data from the data network and transmit it to the terminal through the access network device; the UPF network element can also receive user data from the terminal through the access network device and forward it to the data network.
  • the transmission resources allocated and scheduled by the UPF network element for the terminal are managed and controlled by the SMF network element.
  • the bearer between the terminal and the UPF network element may include: a user plane connection between the UPF network element and the access network device, and the establishment of a channel between the access network device and the terminal.
  • the user plane connection is a quality of service (QoS) flow that can establish transmission data between the UPF network element and the access network device.
  • QoS quality of service
  • the AMF network element can be used to manage the terminal's access to the core network, such as: terminal location update, network registration, access control, terminal mobility management, terminal attachment and detachment, and so on.
  • the AMF network element may also provide storage resources of the control plane for the session in the case of providing services for the session of the terminal, so as to store the session identifier, the SMF network element identifier associated with the session identifier, and so on.
  • SMF network elements can be used to select user plane network elements for the terminal, redirect user plane network elements for the terminal, assign Internet protocol (IP) addresses to the terminal, and establish a bearer between the terminal and the UPF network element (also called Is session), session modification, release and QoS control.
  • IP Internet protocol
  • the PCF network element is used to provide strategies, such as QoS strategy, slice selection strategy, etc., to AMF network elements and SMF network elements.
  • the AF network element is used to interact with the 3GPP core network element to support application-affected data routing, access network exposure functions, and interact with the PCF network element for policy control.
  • IP multimedia service IP multi-media service, IMS
  • IMS IP multi-media service
  • AS application servers
  • the AS may implement the function of AF.
  • Terminal Support strategy configuration extension to multicast broadcast service (multicast broadcast service, MBS); support session management SM extension of MBS flow; increase signaling of MBS flow, such as through SM signaling or user plane Internet group management protocol (internet group management protocol, IGMP) transports MBS streams; supports MBS at the AS layer of the application server.
  • MBS multicast broadcast service
  • IGMP Internet group management protocol
  • Access network equipment receive the MBS stream through the N3 interface and transmit it to the terminal through the air interface; the transmission of the MBS stream is switched between multicast and unicast; the access network equipment configures how the UE receives the MBS stream at the AS layer .
  • UPF network element Supports data packet filtering of MBS streams, supports the transmission of MBS streams to RAN in point-to-point or point-to-multipoint mode; receives 5G MBS stream configuration information from SMF network elements; if the UE sends data through IGMP Packets, UPF network elements detect IGMP data packets and notify SMF network elements; UPF network elements can receive unicast and broadcast streams at the same time; UPF network elements are configured to use point-to-multipoint transmission of MBS streams in a certain area, and transmit certain Unicast streaming of some UEs.
  • SMF network element Control MBS transmission according to the MBS policy received from PCF network element; configure MBS flow for UPF network element, and point-to-point or point-to-multipoint transmission; configure MBS flow and QoS information for RAN; for UE Configure the SM configuration of the MBS stream (that is, the SM configuration that contains the MBS stream on the UE side); the SMF network element supports unicast and MBS services.
  • PCF network element support multicast service strategy, including QoS parameters, such as 5QI (5G service quality identifier), maximum bit rate (maximum bit rate, MBR), guaranteed bit rate (guaranteed bit rate, GBR); to SMF
  • QoS parameters such as 5QI (5G service quality identifier), maximum bit rate (maximum bit rate, MBR), guaranteed bit rate (guaranteed bit rate, GBR)
  • the network element provides the policy information of the MBS session; it directly receives the MBS service information from the AF, or receives the MBS service information from the AF through the network exposure function (NEF) network element.
  • 5QI 5G service quality identifier
  • MBR maximum bit rate
  • GBR guaranteed bit rate
  • NEF network element 5G MBS service failure; Negotiate 5G MBS service with AF, including QoS, 5G MBS service area.
  • FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of this application.
  • the network architecture provided by this embodiment includes: UE, next-generation access network NG-RAN, multicast/broadcast user plane function (multicast/broadcast user plane function, MB-UPF) network elements, and multicast Access and mobility management function (multicast-access and mobility management function, M-AMF) network element, multicast/broadcast session management function (multicast/broadcast session management function, MB-SMF) network element, multicast/broadcast service Function (multicast/broadcast service function, MBSF) network elements, multicast/broadcast service user plane (MBSU) network elements, NEF network elements, and applications.
  • M-AMF multicast-access and mobility management function
  • M-AMF multicast-access and mobility management function
  • M-AMF multicast/broadcast session management function
  • MB-SMF multicast/broadcast service Function
  • MBSU multicast/broadcast service user plane
  • MB-SMF network element and MB-UPF network element are new function network elements of 5G system.
  • MBSF network element is a new functional network element, used to process the signaling part to meet the service layer capabilities in transmission only mode and full service mode. In transmission only mode, MBSF network element also provides application servers or content providers interface.
  • the MBSU network element is also a new functional network element, which is used to process the payload part to cater to the service layer capabilities.
  • the embodiments of this application include existing interfaces and newly-added interfaces.
  • the main interfaces include: Uu interface between UE and NG-RAN, N2 interface between NG-RAN and M-AMF (which can be used for Process MBS session), MB-N3 interface between NG-RAN and MB-UPF, Nx interface between MB-SMF and MB-UPF, Ny interface between MBSF and MBSU (this interface is a new interface, available To provide service layer functions in full service mode), the N6MB_C interface between MB-SMF and MBSF (the interface is a new interface used to implement NF services), the NxMB_C interface between MBSF and NEF (the interface is new Increase the interface, used to realize the NF service), the NxMB_U interface between MBSU and NEF (this interface is a new interface), and the N6 interface between MB-UPF and MBSU (support MBS user plane).
  • Each network element in FIG. 1 and FIG. 2 may be a network element in a hardware device, a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform). It should be noted that, in the network architecture shown in FIG. 1 or FIG. 2, only the network elements included in the entire network architecture are exemplified. In the embodiments of the present application, the network elements included in the entire network architecture are not limited.
  • the embodiment of the present application proposes a session processing method, which is mainly aimed at the MBS session of the 5G network and realizes effective utilization of MBS session resources. After the MBS session is established, the MBS session will occupy a large amount of network resources and interface channels, resulting in waste of network resources and interface channels.
  • the system when no UE is interested in the MBS session, the system can suspend the active MBS session, release resources related to the MBS session, but still maintain MBS context information; when MBS data arrives Or when a UE is interested in the MBS session, the system can restore or reactivate the MBS session, and can also re-allocate resources for the MBS session.
  • network resources can be effectively used, the waste of network resources can be avoided, and the communication quality of the system can be improved.
  • Fig. 3 is an interaction diagram of a session processing method provided by an embodiment of the application. As shown in Figure 3, the method provided in this embodiment includes the following steps:
  • Step 101 The access network device determines to deactivate the multicast broadcast service MBS session.
  • the access network device When the MBS session is in the active state, the access network device detects the MBS session, and if there is no data transmission on the active MBS session, or no UE receives the MBS session, the access network device determines to deactivate the MBS session.
  • Step 102 The access network device sends an MBS session suspension request to the core network device.
  • the MBS session suspension request includes at least one of the identification information of the MBS session, the suspension reason, and the operation type.
  • the identification information of the MBS session is used to uniquely determine the MBS session, and the identification of the MBS session can be represented by the ID or character string of the MBS session.
  • Suspended reasons include no data transmission on the MBS session, or no UE receiving the MBS session.
  • the operation type is used to indicate whether to release the tunnel information (tunnel info, or channel information) between the core network device and the access network device, that is, the access network device can instruct the core network device to release or reserve through the MBS session suspension request Tunnel information between core network equipment and access network equipment.
  • Step 103 The access network device receives the MBS session suspension response of the core network device.
  • the MBS session suspension response is used to notify the access network device that the core network device has received the MBS session suspension request.
  • Step 104 The access network device releases the access network resources of the MBS session.
  • the access network resource can be understood as the air interface resource allocated by the access network device for the MBS session, including time domain resources and frequency domain resources.
  • the access network device may save the context information of the deactivated MBS session (that is, the suspended MBS session).
  • the context information includes NGAP-related context information, MBS context, and PDU session context information necessary for resuming the MBS session.
  • NGAP refers to the interface protocol between the access network and the core network, that is, the NG interface application protocol.
  • the context information of the deactivated MBS session saved by the access network device Node B further includes QoS flow information, session type information (IP type or Ethernet type), and security related information.
  • the core network device can also save the deactivated MBS session context information according to the instruction of the MBS session suspension request of the access network device.
  • the AMF network element and SMF network element in the core network can save the deactivated MBS session. Context information of the MBS session.
  • the access network device may further include:
  • Step 105 The access network device releases the tunnel information with the core network device.
  • releasing the tunnel information between the access network device and the core network device refers to releasing the tunnel information between the access network device and the UPF network element in the core network. It should be noted that the execution order of the foregoing step 104 and step 105 is not limited to the execution order shown in FIG. 3, and can also be executed at the same time, which does not impose any limitation on the embodiment of the present application.
  • the session processing method provided by the embodiments of the application involves the process of deactivating the MBS session.
  • the access network device determines to deactivate the MBS session, sends an MBS session suspension request to the core network device, and instructs the core network device to suspend the MBS session.
  • the network device sends an MBS session suspension response to the access network device, and the access network device can release the air interface resources of the MBS session and the tunnel information with the core network device.
  • the above-mentioned deactivation process for the MBS session can effectively utilize network resources, avoid waste of network resources, and improve system communication quality.
  • step 102 includes: the access network device sends an MBS session suspension request to the session management function SMF network element.
  • step 103 includes: the access network device receives the MBS session suspension response of the SMF network element.
  • the access network device determines that the MBS session is suspended, it sends an MBS session suspension request to the SMF network element of the core network, so that the SMF network element executes the MBS session modification process according to the MBS session suspension request.
  • the specific process can be See the examples below.
  • FIG. 4 is an interaction diagram of a session processing method provided by an embodiment of the application.
  • Figure 4 uses NG-RAN as the access network equipment.
  • the NG-RAN consists of a group of gNBs connected to the 5G core network through the NG interface.
  • the core network equipment includes AMF network elements, SMF network elements, and UPF network elements.
  • the method provided in this embodiment includes the following steps:
  • Step 201 The access network device determines to deactivate the MBS session.
  • the manner in which the access network device determines to deactivate the MBS session is the same as the foregoing embodiment. For details, please refer to the foregoing embodiment.
  • Step 202 The access network device sends an MBS session suspension request to the AMF network element.
  • Step 203 The AMF network element forwards the MBS session suspension request to the SMF network element.
  • the access network device sends an MBS session suspension request to the SMF network element through the AMF network element.
  • the MBS session suspension request includes at least one of the identification information of the MBS session, the suspension reason, and the operation type. Specifically, it can participate in the above-mentioned embodiment, and will not be repeated here.
  • the MBS session suspension request may be used to instruct the SMF network element to update the context information of the MBS session management SM.
  • Step 204 The SMF network element sends an MBS session modification request to the UPF network element.
  • the SMF network element initiates the MBS session modification process according to the indication of the MBS session suspension request.
  • the MBS session modification request is used to indicate whether the UPF network element releases tunnel information between the access network device and the UPF network element.
  • the tunnel information between the access network device and the UPF network element may also be retained. It should be noted that even if the tunnel information between the access network and the UPF network element is retained, the SMF network element also needs to send an MBS session modification request to the UPF network element, so that the UPF network element knows that the MBS session is suspended, and the UPF network element No more data is sent to the UE, thereby reducing the power consumption of the UPF network element. This example retains the tunnel information between the access network device and the UPF network element. When the MBS session transitions from the deactivated state to the activated state, the access network device does not need to reallocate the tunnel information, and can directly establish the MBS session based on the reserved tunnel information .
  • Step 205 The UPF network element sends an MBS session modification response to the SMF network element.
  • the MBS session modification response is used to indicate that the UPF network element has received the MBS session modification request.
  • Step 206 The SMF network element sends an MBS session suspension response to the AMF network element.
  • Step 207 The AMF forwards the MBS session suspension response to the access network device.
  • the MBS session suspension response is used to indicate that the MBS session of the access network device has been suspended.
  • Step 208 The access network device releases the access network resources of the MBS session.
  • the access network device determines whether to release or reserve the access network resources, and whether to release or reserve the tunnel information between the access network device and the UPF network element. If the tunnel information is released, the indication information for releasing the tunnel information can be carried in the MBS session suspension request, so that the SMF network element initiates the session modification process according to the MBS session suspension request, and informs the UPF network element to release the connection with the access network device. Tunnel information.
  • the access network device when the access network device determines to deactivate the MBS session, it sends an MBS session suspension request to the SMF network element through the AMF network element, instructing the SMF network element to suspend the MBS session, and the SMF network element can also suspend the MBS session according to the connection
  • the instruction of the network access device sends an MBS session modification request to the UPF network element, so that the UPF network element releases the tunnel information with the access network device.
  • the access network device When the MBS session is suspended, the access network device can also release the MBS session Air interface resources.
  • Fig. 5 is an interaction diagram of a session processing method provided by an embodiment of the application. As shown in Figure 5, the method provided in this embodiment includes the following steps:
  • Step 301 The SMF network element determines to deactivate the multicast broadcast service MBS session.
  • the SMF network element may determine to deactivate the MBS session according to the received instruction information, or determine to deactivate the MBS session according to local policy configuration information.
  • the SMF network element determines to deactivate the MBS session according to the received instruction information.
  • the indication information received by the SMF network element may include at least one of the following: indication information sent by the access network device; indication information sent by the access and mobility management function AMF network element; indication information sent by the UPF network element.
  • the foregoing indication information is used to indicate that there is no data transmission on the MBS session in the active state, or that no UE receives the MBS session.
  • the SMF network element determines to initiate the MBS session suspension process according to the instruction information.
  • the SMF network element detects that there is no data transmission on the active MBS session, or no UE receives the MBS session, it can determine to deactivate the MBS session and initiate the MBS session suspension process.
  • the SMF network element may determine to deactivate the MBS session.
  • the executor of the MBS session suspension process in the embodiment of this application is the SMF network element, and the SMF network element can be based on the access network equipment or other core network elements.
  • the sent instruction information determines whether to initiate the MBS session process, or directly determines whether to initiate the MBS session process through detection.
  • Step 302 The SMF network element sends an MBS session suspension request to the access network device.
  • the MBS session suspension request includes at least one of the identification information of the MBS session, the suspension reason, and the operation type. For details, please refer to step 102 of the embodiment in FIG. 3.
  • Step 303 The access network device releases the access network resources.
  • the access network device after receiving the MBS session suspension request, releases the access network resources according to the indication of the MBS session suspension request. As another example, when the access network device receives the MBS session suspension request, the access network device determines whether to release the access network resources.
  • Step 304 The SMF network element receives the MBS session suspension response of the access network device.
  • the MBS session suspension response is used to notify the SMF network element that the access network device has received the MBS session suspension request.
  • the access network device receives the MBS session suspension request sent by the SMF network element through the AMF network element, and the access network device sends the MBS session suspension response to the SMF network element through the AMF network element. .
  • the SMF network element may save the context information of the deactivated MBS session.
  • the access network device may also save the context information of the deactivated MBS session according to the indication of the MBS session suspension request of the SMF network element.
  • the access network device determines whether to save the context information of the deactivated MBS session. If it is necessary to save the context information of the deactivated MBS session, the access network device may carry indication information in the MBS session suspension response. The indication information is used to instruct the SMF network element to save the context information of the deactivated MBS session.
  • the session processing method provided by the embodiments of the application involves the process of deactivating the MBS session.
  • the SMF network element determines to deactivate the MBS session, sends an MBS session suspension request to the access network device, and instructs the access network device to suspend the MBS session.
  • the access network device sends an MBS session suspension response to the SMF network element, and the access network device can release the air interface resources of the MBS session and the tunnel information with the core network device.
  • the above-mentioned deactivation process for the MBS session can effectively utilize network resources, avoid waste of network resources, and improve system communication quality.
  • the SMF network element when the SMF network element determines to deactivate the multicast broadcast service MBS session, it further includes: the SMF network element sends an MBS session modification request to the UPF network element, and the SMF network element receives the MBS session of the UPF network element Modify the response.
  • the SMF network element when the SMF network element determines that the MBS session is suspended, it sends an MBS session modification request to the UPF network element of the core network, so that the UPF network element releases the tunnel information with the access network device according to the MBS session modification request.
  • the SMF network element determines that the MBS session is suspended, it sends an MBS session modification request to the UPF network element of the core network, so that the UPF network element releases the tunnel information with the access network device according to the MBS session modification request.
  • FIG. 6 is an interaction diagram of a session processing method provided by an embodiment of the application.
  • Figure 6 uses NG-RAN as the access network equipment, and UPF network elements are divided into examples.
  • the method provided in this embodiment includes the following steps:
  • Step 401 The SMF network element determines to deactivate the multicast broadcast service MBS session.
  • the SMF network element can determine whether to release the N3 end UPF in FIG. 6.
  • the specific execution process includes the following two designs.
  • the method may include the following steps:
  • Step 402a The SMF network element sends an MBS session release request to the UPF of the N3 terminal.
  • Step 402b The UPF at the N3 side returns an MBS session release response to the SMF network element.
  • Step 403a The SMF network element sends an MBS session modification request to the data transmission end UPF (that is, the UPF to buffer in FIG. 6).
  • the above design process shows that when the SMF network element determines to deactivate the MBS session, it initiates the MBS session release process and the MBS session modification process to the UPF network element.
  • the session release process is used to instruct the UPF network element to release the communication with the access network device.
  • Tunnel information the MBS session modification process is used to instruct the UPF network element to update the context information of the MBS session.
  • Step 403b The data transmission end UPF returns an MBS session modification request to the SMF network element.
  • the method may include the following steps:
  • Step 404a The SMF network element sends an MBS session modification request to the N3 terminal UPF.
  • Step 404b the UPF at the N3 side returns an MBS session modification response to the SMF network element.
  • the above design process shows that when the SMF network element determines to deactivate the MBS session, it initiates the MBS session modification process to the UPF network element.
  • the MBS session modification process can be used to instruct the UPF network element (ie, the N3 end UPF in Figure 6) to delete and MBS. N3 tunnel information of the PDU session associated with the session, or indicating that the N3 tunnel information of the UPF network element has been disabled.
  • the UPF network element can cache the downlink DL data packet of the PDU session associated with the MBS session according to the indication of the MBS session modification request of the SMF network element, or discard the DL data packet of the PDU session, or the PDU session
  • the DL data packet is forwarded to the SMF network element (for example, the DL data packet is forwarded through the MBS session modification response).
  • the MBS session release process can also be used to instruct the UPF network element to delete the N3 tunnel information of the PDU session associated with the MBS session, or to indicate that the N3 tunnel information of the UPF network element has been disabled .
  • Step 405 The SMF network element sends an MBS session suspension request to the AMF network element.
  • Step 406 The AMF network element forwards the MBS session suspension request to the access network device.
  • Step 407 The access network device releases the access network resources.
  • Step 408 The access network device sends an MBS session suspension response to the AMF network element.
  • Step 409 The AMF network element forwards the MBS session suspension response to the SMF network element.
  • step 402a or step 404a and step 405 in the embodiment of the present application is not limited to the execution order shown in FIG. 404a) and step 405, and step 402a (or step 404a) and step 405 can also be executed in sequence, which does not impose any limitation on this embodiment of the present application.
  • the SMF network element when the SMF network element determines to deactivate the MBS session, it sends an MBS session suspension request to the access network device through the AMF network element to instruct the access network device to suspend the MBS session, and the UPF network element can also The SMF network element instructs to release the tunnel information with the access network device.
  • the access network device When the MBS session is suspended, the access network device can also release the air interface resources of the MBS session.
  • the foregoing several embodiments show the deactivation process of the MBS session in the activated state, which releases the resources related to the deactivated MBS session, avoids the waste of network resources, and improves the service quality of the communication system.
  • the following describes in detail the technical solution of how to activate the MBS session in the deactivated state in the communication system with reference to the session processing method shown in the embodiments of FIG. 7 to FIG. 10.
  • Fig. 7 is an interaction diagram of a session processing method provided by an embodiment of the application. As shown in Figure 7, the method provided in this embodiment includes the following steps:
  • Step 501 The access network device determines to activate the MBS session.
  • the access network device may determine to activate the MBS session according to the received instruction information, or determine to activate the MBS session according to local policy configuration information.
  • the access network device determines to activate the MBS session according to the received instruction information.
  • the indication information received by the access network device includes at least one of the following: indication information sent by the UE; indication information sent by the access and mobility management function AMF network element; indication information sent by the session management function SMF network element.
  • the indication information sent by the UE may be RRC information.
  • the foregoing indication information is used to indicate that there is data transmission on the MBS session in the deactivated state, or that a UE joins the MBS session.
  • the access network device determines to initiate an MBS session activation process according to the instruction information.
  • the access network device detects that there is data transmission on the MBS session in the deactivated state, or if a UE accesses the MBS session, it may determine to activate the MBS session and initiate an MBS session activation process.
  • Step 502 The access network device sends an MBS session activation request to the core network device.
  • the MBS session activation request includes the identification information of the MBS session.
  • the MBS session activation request sent by the access network device to the core network device may also It includes the tunnel information redistributed by the access network device for the MBS session, that is, the tunnel information between the core network device and the access network device, which is used to instruct the core network device to establish a tunnel with the access network device.
  • Step 503 The core network device sends an MBS session activation response to the access network device.
  • the MBS session activation response is used to indicate that the core network device has received the MBS session activation request.
  • Step 504 The access network device activates or restarts the access network resource.
  • the access network device releases the access network resources when the MBS session is deactivated, the access network device needs to re-allocate the access network resources for the MBS session. If the access network device does not release the access network resources when deactivating the MBS session, the access network device does not need to allocate new access network resources for the MBS session.
  • Step 505 The access network device starts or restores the tunnel information with the core network device.
  • starting or resuming the tunnel information between the access network device and the core network device refers to starting or resuming the tunnel information between the access network device and the UPF network element in the core network. It should be noted that the execution order of the foregoing step 504 and step 505 is not limited to the execution order shown in FIG.
  • the session processing method provided in this application embodiment involves the activation process of the MBS session.
  • the access network device determines to activate the MBS session, sends an MBS session activation request to the core network device, and instructs the core network device to activate the MBS session.
  • the access network device sends an MBS session activation response, and the access network device activates or restarts the air interface resources of the MBS session, and the tunnel information with the core network device.
  • the above process can realize the rapid establishment of the MBS session in the deactivated state, improve the utilization rate of system resources, and improve the quality of system communication.
  • FIG. 8 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • Figure 8 uses NG-RAN as the access network equipment, and the core network equipment includes AMF network elements, SMF network elements, and UPF network elements.
  • the method provided in this embodiment includes the following steps:
  • Step 601 The access network device determines to activate the MBS session.
  • the manner in which the access network device determines to activate the MBS session is the same as the foregoing embodiment. For details, please refer to the foregoing embodiment.
  • Step 602 The access network device sends an MBS session activation request to the AMF network element.
  • Step 603 The AMF network element forwards the MBS session activation request to the SMF network element.
  • the access network device sends an MBS session activation request to the SMF network element through the AMF network element.
  • the MBS session activation request includes the identification information of the MBS session, and may also include tunnel information between the UPF network element in the core network and the access network device (it may be the tunnel information re-allocated by the access network device).
  • Step 604 The SMF network element sends an MBS session modification request to the UPF network element.
  • the MBS session modification request includes tunnel information between the UPF network element in the core network and the access network device, which is used to instruct the UPF network element to establish a tunnel with the access network device.
  • Step 605 The UPF network element sends an MBS session modification response to the SMF network element.
  • the MBS session modification response may be used to indicate that the UPF network element has received the MBS session modification response.
  • Step 606 The SMF network element sends an MBS session activation response to the AMF network element.
  • Step 607 The AMF network element forwards the MBS session activation response to the access network device.
  • the MBS session activation response is used to indicate that the SMF network element has received the MBS session activation request.
  • Step 608 The access network device activates or restarts the access network resource.
  • the access network device when it determines to activate the MBS session, it sends an MBS session activation request to the SMF network element through the AMF network element to instruct the SMF network element to activate the MBS session, and the SMF network element can also activate the MBS session according to the MBS session activation request , Initiate the MBS session modification process, and send an MBS session modification request to the UPF network element, so that the UPF network element re-establishes the tunnel with the access network device.
  • the access network device restarts or activates the MBS The air interface resources of the session.
  • the above process can realize the rapid establishment of the MBS session in the deactivated state, improve the utilization rate of system resources, and improve the quality of system communication.
  • FIG. 9 is an interaction diagram of a session processing method provided by an embodiment of the application. As shown in Figure 9, the method provided in this embodiment includes the following steps:
  • Step 701 The SMF network element determines to activate the MBS session.
  • the SMF network element when the MBS session is in the deactivated state, the SMF network element may determine to activate the MBS session according to the received instruction information, or determine to activate the MBS session according to local policy configuration information.
  • the SMF network element determines to activate the MBS session according to the received instruction information.
  • the indication information received by the SMF network element includes at least one of the following: indication information sent by the UE; indication information sent by the access network device; indication information sent by the AMF network element; indication information sent by the UPF network element.
  • the indication information sent by the UE may be carried in NAS signaling, such as PDU session establishment.
  • the indication information sent by the access network device may include UE information and MBS session information.
  • the AMF network element may receive indication information (such as a service request message) from the NAS message sent by the UE, or receive indication information from the N2 message sent by the base station.
  • the PDU network element may receive indication information from a base station (such as Node B) or UE.
  • the above indication information is used to indicate that there is data transmission on the MBS session in the deactivated state, or that a UE joins the MBS.
  • the SMF network element determines to initiate an MBS session activation process according to the instruction information.
  • the SMF network element detects that there is data transmission on the MBS session in the deactivated state, or if a UE accesses the MBS session, it may determine to activate the MBS session and initiate an MBS session activation process.
  • Step 702 The SMF network element sends an MBS session activation request to the access network device.
  • the MBS session activation request includes the identification information of the MBS session.
  • Step 703 The access network device sends an MBS session activation response to the SMF network element.
  • the MBS session activation response is used to indicate that the access network device has received the MBS session activation request.
  • Step 704 The access network device activates or restarts the access network resource.
  • the access network device needs to re-allocate the access network resources for the MBS session. If the access network device does not release the access network resources when deactivating the MBS session, the access network device does not need to allocate new access network resources for the MBS session.
  • the access network device can reconfigure the tunnel information and carry the tunnel information in
  • the SMF network element initiates the MBS session modification process and informs the UPF network element of the reconfigured tunnel information. That is, the MBS session activation response in this embodiment may include tunnel information that the access network device re-allocates for the MBS session.
  • the session processing method provided by the embodiments of the application involves the activation process of the MBS session.
  • the SMF network element determines to activate the MBS session, sends an MBS session activation request to the access network device, and instructs the access network device to activate the MBS session, and the access network device Send an MBS session activation response to the SMF network element, the access network device activates or restarts the air interface resource of the MBS session, and the tunnel information with the UPF network element in the core network.
  • the above process can realize the rapid establishment of the MBS session in the deactivated state, improve the utilization rate of system resources, and improve the quality of system communication.
  • FIG. 10 is an interaction diagram of a session processing method provided by an embodiment of this application.
  • Figure 10 uses NG-RAN as the access network equipment, and the core network equipment includes AMF network elements, SMF network elements, and UPF network elements.
  • the method provided in this embodiment includes the following steps:
  • Step 801 The SMF network element determines to activate the MBS session.
  • Step 802 The SMF network element sends an MBS session activation request to the AMF network element.
  • Step 803 The AMF network element forwards the MBS session activation request to the access network device.
  • Step 804 The access network device activates or restarts the access network resource.
  • Step 805 The access network device sends an MBS session activation response to the AMF network element.
  • Step 806 The AMF network element forwards the MBS session activation response to the SMF network element.
  • the SMF network element when the SMF network element determines to activate the MBS session, it can initiate a session modification process.
  • the session modification process includes the following two execution modes:
  • the SMF network element determines to activate the MBS session, the SMF network element The MBS session modification process 1 shown in FIG. 10 is directly initiated, and the UPF network element starts or restores the tunnel information with the core network device according to the MBS session modification request.
  • the SMF network element can receive the information from the access network device.
  • the MBS session modification process 2 shown in FIG. 10 is initiated.
  • the access network device reconfigures the tunnel information for the reactivated MBS session, and carries the tunnel information in the MBS session activation response, so that the SMF network element sends a session modification request to the UPF network element according to the MBS session activation response.
  • the network element establishes a tunnel with the core network device according to the MBS session modification request.
  • the session modification process 1 includes the following two steps: the SMF network element sends an MBS session modification request to the UPF network element, and the MBS session modification request is used to instruct the UPF network element to start or restore the tunnel information with the access network device; SMF network The element receives the MBS session modification response of the UPF network element.
  • the session modification process 2 includes the following two steps: the SMF network element sends an MBS session modification request to the UPF network element, and the MBS session modification request includes the tunnel between the UPF network element reconfigured by the access network device and the access network device.
  • the SMF network element receives the MBS session modification response of the UPF network element.
  • the session processing method provided by the embodiment of the application involves the activation process of the MBS session.
  • the SMF network element determines to activate the MBS session, and sends an MBS session activation request to the access network device through the SMF network element to instruct the access network device to activate the MBS session.
  • the access network device sends an MBS session activation response to the SMF network element through the AMF network element, the access network device activates or restarts the air interface resource of the MBS session, and the tunnel information with the UPF network element in the core network.
  • the above process can realize the rapid establishment of the MBS session in the deactivated state, improve the utilization rate of system resources, and improve the quality of system communication.
  • the session processing method provided in the embodiment of the present application is described in detail above, and the access network device and the session management device provided in the embodiment of the present application will be described below.
  • FIG. 11 is a schematic structural diagram of an access network device provided by an embodiment of this application. As shown in FIG. 11, the access network device 1100 provided in the embodiment of the present application includes:
  • the processing module 1101 is used to determine to deactivate the MBS session of the multicast broadcast service; the sending module 1102 is used to send an MBS session suspension request to the core network device; the receiving module 1103 is used to receive the MBS session suspension response of the core network device.
  • the processing module 1101 is specifically configured to determine to deactivate the MBS session when there is no data transmission on the MBS session in the active state, or no UE receives the MBS session.
  • the MBS session suspension request includes at least one of the identification information of the MBS session, the suspension reason, and the operation type, and the operation type is used to indicate whether to release the tunnel information between the core network device and the access network device.
  • the sending module 1102 is configured to send an MBS session suspension request to the session management function SMF network element; correspondingly, the receiving module 1103 is configured to receive an MBS session suspension response from the SMF network element.
  • the device 1100 further includes: a storage module 1104, configured to store the context information of the deactivated MBS session.
  • the processing module 1101 is further configured to: after the receiving module receives the MBS session suspension response of the core network device, release the tunnel information with the core network device.
  • the access network device provided in the embodiment of the present application is used to execute the technical solution executed by the access network device in the method embodiment shown in FIG. 3 or FIG.
  • FIG. 12 is a schematic structural diagram of a session management device provided by an embodiment of this application.
  • the session management device 1200 provided in the embodiment of the present application includes: a processing module 1201, configured to determine to deactivate a multicast broadcast service MBS session; and a sending module 1202, configured to send MBS session suspension to an access network device Request; receiving module 1203, used to receive the MBS session suspension response of the access network device.
  • the processing module 1201 is specifically configured to: determine to deactivate the MBS session according to the received instruction information; the instruction information is used to indicate that there is no data transmission on the active MBS session, or that no UE receives the MBS session.
  • the indication information includes at least one of the following: indication information sent by the access network device; indication information sent by the AMF network element; indication information sent by the UPF network element.
  • the processing module 1201 is specifically configured to determine to deactivate the MBS session when there is no data transmission on the MBS session in the active state, or no UE receives the MBS session.
  • the MBS session suspension request includes at least one of the identification information of the MBS session, the suspension reason, and the operation type, and the operation type is used to indicate whether to release the tunnel information between the core network device and the access network device.
  • the device 1200 further includes: a storage module 1204, configured to store the context information of the deactivated MBS session.
  • the sending module 1202 is further configured to: when the processing module determines to deactivate the multicast broadcast service MBS session, send an MBS session modification request to the UPF network element; the receiving module 1203 is also configured to receive the MBS session of the UPF network element Modify the response.
  • the session management device provided by the embodiment of the present application is used to execute the technical solution executed by the AMF network element in the method embodiment shown in FIG. 5 or FIG.
  • FIG. 13 is a schematic structural diagram of an access network device provided by an embodiment of this application.
  • the access network device 1300 provided by the embodiment of the present application includes: a processing module 1301, configured to determine to activate an MBS session; a sending module 1302, configured to send an MBS session activation request to a core network device; and a receiving module 1303 , Used to receive the MBS session activation response of the core network device.
  • the processing module 1301 is specifically configured to determine to activate the MBS session according to the received instruction information; the instruction information is used to indicate that there is data transmission on the MBS session in the deactivated state, or that a UE joins the MBS.
  • the indication information includes at least one of the following: indication information sent by the UE; indication information sent by the AMF network element; indication information sent by the SMF network element.
  • the MBS session activation request includes identification information of the MBS session.
  • the MBS session activation request further includes tunnel information between the core network device and the access network device.
  • processing module 1301 is further configured to start or restore the tunnel information with the core network device after the receiving module receives the MBS session activation response of the core network device.
  • the access network device provided by the embodiment of the present application is used to execute the technical solution executed by the access network device in the method embodiment shown in FIG. 7 or FIG.
  • FIG. 14 is a schematic structural diagram of a session management device provided by an embodiment of the application.
  • the session management device 1400 provided by the embodiment of the present application includes: a processing module 1401, configured to determine to activate a multicast broadcast service MBS session; and a sending module 1402, configured to send an MBS session activation request to an access network device ; Receiving module 1403, used to receive the MBS session activation response of the access network device.
  • the processing module 1401 is specifically configured to determine to activate the MBS session according to the received instruction information; the instruction information is used to indicate that there is data transmission on the MBS session in the deactivated state, or that a UE joins the MBS.
  • the indication information includes at least one of the following: indication information sent by the UE; indication information sent by the access network device; indication information sent by the AMF network element; indication information sent by the UPF network element.
  • the MBS session activation request includes identification information of the MBS session.
  • the sending module 1402 is also used to send an MBS session modification request to the UPF network element, and the MBS session modification request is used to instruct the UPF network element to start or restore the tunnel information with the access network device; the receiving module 1403 is also used to Receive the MBS session modification response of the UPF network element.
  • the MBS session activation response includes tunnel information re-allocated by the access network device for the MBS session.
  • the session management device provided by the embodiment of the present application is used to execute the technical solution executed by the AMF network element in the method embodiment shown in FIG. 9 or FIG.
  • the division of the various modules of the above terminal equipment or network equipment is only a logical function division, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software called by processing elements; they can also be implemented in the form of hardware; some modules can be implemented in the form of calling software by processing elements, and some of the modules can be implemented in the form of hardware.
  • the processing module may be a separate processing element, or it may be integrated in a chip of the above-mentioned device for implementation.
  • each step of the above method or each of the above modules can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (FPGA), etc.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • FPGA field programmable gate arrays
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.
  • CPU central processing unit
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • FIG. 15 is a schematic diagram of the hardware structure of an access network device provided by an embodiment of this application.
  • the access network device 1500 of this embodiment may include: a processor 1501, a memory 1502, and a communication interface 1503.
  • the memory 1502 is used to store a computer program;
  • the processor 1501 is used to execute the computer program stored in the memory 1502 to implement the method executed by the access network device in any of the foregoing method embodiments.
  • the communication interface 1503 is used for data communication or signal communication with functional network elements.
  • the memory 1502 may be independent or integrated with the processor 1501.
  • the access network device 1500 may further include: a bus 1504 for connecting the memory 1502 and the processor 1501.
  • the processing module 1101 in FIG. 11 may be integrated into the processor 1501 for implementation, and the sending module 1102 and the receiving module 1103 may be integrated into the communication interface 1503 for implementation.
  • the processing module 1301 in FIG. 13 may be integrated into the processor 1501 for implementation, and the sending module 1302 and the receiving module 1303 may be integrated into the communication interface 1503 for implementation.
  • the processor 1501 may be used to implement the signal processing operation of the access network device in the foregoing method embodiment, and the communication interface 1503 may be used to implement the signal transceiving operation of the access network device in the foregoing method embodiment.
  • the access network device provided in this embodiment can be used to execute the method executed by the access network device in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • FIG. 16 is a schematic structural diagram of a session management device provided by an embodiment of the application.
  • the session management device 1600 of this embodiment includes: a processor 1601, a memory 1602, and a communication interface 1603.
  • the memory 1602 is used to store a computer program; the processor 1601 is used to execute the computer program stored in the memory 1602 to implement the method executed by the SMF network element in any of the foregoing method embodiments.
  • the communication interface 1603 is used for data communication or signal communication with access network equipment or other functional network elements.
  • the memory 1602 may be independent or integrated with the processor 1601.
  • the session management device 1600 may further include: a bus 1604 for connecting the memory 1602 and the processor 1601.
  • the processing module 1201 in FIG. 12 may be integrated into the processor 1601 for implementation, and the sending module 1202 and the receiving module 1203 may be integrated into the communication interface 1603 for implementation.
  • the processing module 1401 in FIG. 14 may be integrated in the processor 1601 for implementation, and the sending module 1402 and the receiving module 1403 may be integrated in the communication interface 1603 for implementation.
  • the processor 1601 may be used to implement the signal processing operation of the SMF network element in any of the foregoing method embodiments
  • the communication interface 1603 may be used to implement the signal sending and receiving operations of the SMF network element in any of the foregoing method embodiments. .
  • the session management device provided in this embodiment can be used to execute the method executed by the AMF network element in any of the foregoing method embodiments, and its implementation principles and technical effects are similar, and will not be repeated here.
  • the embodiment of the present application also provides a computer-readable storage medium that stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, it is used to implement the interface in any of the foregoing method embodiments.
  • the embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores a computer-executable instruction, and when the computer-executable instruction is executed by a processor, it is used to implement the AMF in any of the foregoing method embodiments.
  • the embodiment of the present application also provides a program, when the program is executed by the processor, it is used to execute the technical solution of the access network device in any of the foregoing method embodiments.
  • the embodiment of the present application also provides a program, when the program is executed by the processor, it is used to execute the technical solution of the AMF network element in any of the foregoing method embodiments.
  • the embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution of the access network device in any of the foregoing method embodiments.
  • the embodiment of the present application also provides a computer program product, including program instructions, which are used to implement the technical solution of the AMF network element in any of the foregoing method embodiments.
  • An embodiment of the present application also provides a chip, which includes a processing module and a communication interface, and the processing module can execute the technical solution of the access network device in the foregoing method embodiment.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the access network.
  • a storage module such as a memory
  • the embodiment of the present application also provides a chip, which includes a processing module and a communication interface, and the processing module can execute the technical solution of the AMF network element in the foregoing method embodiment.
  • the chip also includes a storage module (such as a memory), the storage module is used to store instructions, the processing module is used to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the AMF network element Technical solutions.
  • At least two refers to two or more, and “multiple” refers to two or more.
  • “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the associated objects before and after are in an “or” relationship; in the formula, the character “/” indicates that the associated objects before and after are in a “division” relationship.
  • “The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a).
  • at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple indivual.
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be implemented in this application.
  • the implementation process of the example constitutes any limitation.

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Abstract

本申请实施例提供一种会话处理方法、设备及存储介质，用于提高对MBS会话资源的利用率，该方法包括：在确定处于激活状态的MBS会话中没有数据传输或者没有UE接入时，发起MBS会话挂起流程，挂起MBS会话可释放MBS会话资源；在确定处于去激活状态的MBS会话有数据传输或者有UE接入时，发起MBS会话激活流程，激活或重启MBS会话资源。其中MBS会话资源包括空口资源、接入网设备与核心网设备之间的隧道资源。上述激活与去激活MBS会话的过程，能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。

Description

会话处理方法、设备及存储介质 技术领域
本申请实施例涉及通信技术领域，尤其涉及一种会话处理方法、设备及存储介质。
背景技术
在第五代移动通信(5th generation mobile networks，5G)网络系统中，数据网络可以通过与终端之间建立的用户面单播连接，向终端发送数据。现有的5G网络系统暂且不支持多播广播传输机制，若数据网络需要向多个终端发送相同的数据，需要使用用户面单播连接向一组终端发送相同的数据，造成了网络资源的浪费。
发明内容
本申请实施例提供一种会话处理方法、设备及存储介质，提高网络资源的利用率。
第一方面，本申请实施例提供一种会话处理方法，包括：接入网设备确定去激活多播广播业务MBS会话，向核心网设备发送MBS会话挂起请求；所述接入网设备接收所述核心网设备的MBS会话挂起响应。
第二方面，本申请实施例提供一种会话处理方法，包括：会话管理功能SMF网元确定去激活多播广播业务MBS会话，向接入网设备发送MBS会话挂起请求；所述SMF网元接收所述接入网设备的MBS会话挂起响应。
第三方面，本申请实施例提供一种会话处理方法，包括：接入网设备确定激活MBS会话，向核心网设备发送MBS会话激活请求；所述接入网设备接收所述核心网设备的MBS会话激活响应。
第四方面，本申请实施例提供一种会话处理方法，包括：SMF网元确定激活多播广播业务MBS会话，向接入网设备发送MBS会话激活请求；所述SMF网元接收所述接入网设备的MBS会话激活响应。
第五方面，本申请实施例提供一种接入网设备，包括：处理模块，用于确定去激活多播广播业务MBS会话；发送模块，用于向核心网设备发送MBS会话挂起请求；接收模块，用于接收所述核心网设备的MBS会话挂起响应。
第六方面，本申请实施例提供一种会话管理设备，包括：处理模块，用于确定去激活多播广播业务MBS会话；发送模块，用于向接入网设备发送MBS会话挂起请求；接收模块，用于接收所述接入网设备的MBS会话挂起响应。
第七方面，本申请实施例提供一种接入网设备，其特征在于，包括：处理模块，用于确定激活MBS会话；发送模块，用于向核心网设备发送MBS会话激活请求；接收模块，用于接收所述核心网设备的MBS会话激活响应。
第八方面，本申请实施例提供一种会话管理设备，包括：处理模块，用于确定激活多播广播业务MBS会话；发送模块，用于向接入网设备发送MBS会话激活请求；接收模块，用于接收所述接入网设备的MBS会话激活响应。
第九方面，本申请实施例提供一种接入网设备，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如第一方面任一项所述的方法，或者如第三方面任一项所述的方法。可选地，上述处理器可以为芯片。
第十方面，本申请实施例提供一种会话管理设备，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如第二方面任一项所述的方法，或者如第四方面任一项所述的方法。可选地，上述处理器可以为芯片。
第十一方面，本申请实施例提供一种存储介质，所述存储介质包括计算机程序，所述计算机程序用于实现如第一方面任一项所述的方法，或者，如第三方面任一项所述的方法。
第十二方面，本申请实施例提供一种存储介质，所述存储介质包括计算机程序，所述计算机程序用于实现如第二方面任一项所述的方法，或者，如第四方面任一项所述的方法。
第十三方面，本申请实施例提供一种通信系统，包括如第九方面所述的接入网设备，以及如第十方面所述的会话管理设备。
本申请实施例提供一种会话处理方法、设备及存储介质，用于提高对MBS会话资源的利用率，该方法包括：在确定处于激活状态的MBS会话中没有数据传输或者没有UE接入时，发起MBS会话挂起流程，挂起MBS会话可释放MBS会话资源；在确定处于去激活状态的MBS会话有数据传输或者有UE接入时，发起MBS会话激活流程，激活或重启MBS会话资源。其中MBS会话资源包括空口资源、接入网设备与核心网设备之间的隧道资源。上述激活与去激活MBS会话的过程，能够有效利用网络资源，避免对网路资源的浪费，提高系统通信质量。
附图说明
图1为本申请实施例提供的一种网络架构示意图；
图2为本申请实施例提供的一种网络架构示意图；
图3为本申请实施例提供的一种会话处理方法的交互图；
图4为本申请实施例提供的一种会话处理方法的交互图；
图5为本申请实施例提供的一种会话处理方法的交互图；
图6为本申请实施例提供的一种会话处理方法的交互图；
图7为本申请实施例提供的一种会话处理方法的交互图；
图8为本申请实施例提供的一种会话处理方法的交互图；
图9为本申请实施例提供的一种会话处理方法的交互图；
图10为本申请实施例提供的一种会话处理方法的交互图；
图11为本申请实施例提供的一种接入网设备的结构示意图；
图12为本申请实施例提供的一种会话管理设备的结构示意图；
图13为本申请实施例提供的一种接入网设备的结构示意图；
图14为本申请实施例提供的一种会话管理设备的结构示意图；
图15为本申请实施例提供的一种接入网设备的硬件结构示意图；
图16为本申请实施例提供的一种会话管理设备的硬件结构示意图；
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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、完整地描述，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在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的说明书、权利要求书及上述附图中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为了更好地理解本申请实施例提供的一种会话处理方法，下面对本申请实施例涉及的网络架构进行描述。图1为本申请实施例提供的一种网络架构示意图。如图1所示，3GPP 标准组发布的5G网络架构包括：终端(user equipment，UE)、支持3GPP技术的接入网(包括radio access network，RAN或access network，AN)、用户面功能(user plane function，UPF)网元、接入和移动性管理功能(access and mobility management function，AMF)网元、会话管理功能(session management function，SMF)网元、策略控制功能(policy control function，PCF)网元、应用功能(application function，AF)和数据网络(data network，DN)。
本领域技术人员可以理解，图1中示出的5G网络架构并不构成对该5G网络架构的限定，具体实现时，该5G网络架构可以包括比图示更多或更少的网元，或者组合某些网元等。应理解，图1中以(R)AN的方式表征AN或RAN。本申请实施例的附图中以接入网为RAN为例进行说明。
本申请实施例中的终端可以为用户设备(user equipment，UE)、手持终端、笔记本电脑、用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication，MTC)终端、具有无线通信功能的手持设备、计算设备、连接到无线调制解调器的处理设备、无人机、车载设备、可穿戴设备、物联网中的终端、虚拟现实设备、未来5G网络中的终端设备、未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端等。
本申请实施例中的接入网设备是终端通过无线方式接入到该网络架构中的接入设备，主要负责空口侧的无线资源管理、服务质量(quality of service，QoS)管理、数据压缩和加密等。例如：基站NodeB、演进型基站eNodeB、5G移动通信系统或新一代无线(new radio，NR)通信系统中的基站、未来移动通信系统中的基站等。
UPF网元、AMF网元、SMF网元、PCF网元为3GPP核心网络的网元(简称：核心网网元)。UPF网元可以称为用户面功能网元，主要负责用户数据的传输，其他网元可以称为控制面功能网元，主要负责认证、鉴权、注册管理、会话管理、移动性管理以及策略控制等，以保障用户数据可靠稳定的传输。
UPF网元可以用于转发和接收终端的数据。例如，UPF网元可以从数据网络接收业务的数据，通过接入网设备传输给终端；UPF网元还可以通过接入网设备从终端接收用户数据，转发到数据网络。其中，UPF网元为终端分配和调度的传输资源是由SMF网元管理控制的。终端与UPF网元之间的承载可以包括：UPF网元和接入网设备之间的用户面连接，以及在接入网设备和终端之间建立信道。其中，用户面连接为可以在UPF网元和接入网设备之间建立传输数据的服务质量(quality of service，QoS)流(flow)。
AMF网元可以用于对终端接入核心网络进行管理，例如：终端的位置更新、注册网络、接入控制、终端的移动性管理、终端的附着与去附着等。AMF网元还可以在为终端的会话提供服务的情况下，为该会话提供控制面的存储资源，以存储会话标识、与会话标识关联的SMF网元标识等。
SMF网元可以用于为终端选择用户面网元、为终端重定向用户面网元、为终端分配因特网协议(internet protocol，IP)地址，建立终端与UPF网元之间的承载(也可以称为会话)、会话的修改、释放以及QoS控制。
PCF网元用于向AMF网元、SMF网元提供策略，如QoS策略、切片选择策略等。
AF网元用于与3GPP核心网网元交互支持应用影响数据的路由，访问网络暴露功能，与PCF网元之间交互以进行策略控制等。
DN可以为如IP多媒体服务(IP multi-media service,IMS)网络、互联网等为用户提供数据服务。在DN中可以有多种应用服务器(application server，AS)，提供不同的应用业务，比如运营商业务，互联网接入或者第三方业务等，AS可以实现AF的功能。
需要说明的是，本申请实施例中为上述终端、接入网设备以及5G核心网NFs网元功能实体增加如下新功能：
(1)终端：支持策略配置扩展到多播广播业务(multicast broadcast service，MBS)；支持MBS流的会话管理SM扩展；增加MBS流的信令，例如通过SM信令或用户面因特网组管理协议(internet group management protocol，IGMP)传输MBS流；在应用服务器AS层支持MBS。
(2)接入网设备：通过N3接口接收MBS流，并通过空中接口传输至终端；MBS流的传输在多播和单播之间切换；接入网设备配置UE如何在AS层接收MBS流。
(3)UPF网元：支持对MBS流的数据包过滤，支持通过点对点、或者点对多点方式传输MBS流至RAN；从SMF网元接收5G MBS流的配置信息；如果UE通过IGMP发送数据包，UPF网元检测IGMP数据包，并通知SMF网元；UPF网元可同时接收单播和广播流；UPF网元被配置为在某一区域使用点对多点传输MBS流，以及传输某些UE的单播流。
(4)SMF网元：根据从PCF网元接收到的MBS策略，控制MBS传输；为UPF网元配置MBS流，以及点对点或者点对多点传输；为RAN配置MBS流和QoS信息；为UE配置MBS流的SM配置(即UE侧包含MBS流的SM配置)；SMF网元支持单播和MBS业务。
(5)PCF网元：支持多播服务策略，包括QoS参数，比如5QI(5G服务质量标识)、最大比特率(maximum bit rate，MBR)、保证比特率(guaranteed bit rate，GBR)；向SMF网元提供MBS会话的策略信息；直接接收来自AF的MBS服务信息，或者通过网络业务呈现功能(network exposure function，NEF)网元接收来自AF的MBS服务信息。
(6)NEF网元：5G MBS服务纰漏；与AF协商5G MBS服务，包括QoS、5G MBS服务区域。
图2为本申请实施例提供的一种网络架构示意图。如图2所示，本实施例提供的网络架构包括：UE、下一代接入网NG-RAN、多播/广播用户面功能(multicast/broadcast user plane function，MB-UPF)网元、多播接入和移动性管理功能(multicast-access and mobility management function，M-AMF)网元、多播/广播会话管理功能(multicast/broadcast session management function，MB-SMF)网元、多播/广播服务功能(multicast/broadcast service function，MBSF)网元、多播/广播服务用户面(multicast/broadcast service user plane，MBSU)网元、NEF网元以及应用(application)。
本申请实施例中的UE、NG-RAN以及M-AMF均支持MBS业务。MB-SMF网元和MB-UPF网元为5G系统新功能网元。MBSF网元是新的功能网元，用于处理信令部分，以满足仅传输模式和全业务模式下的业务层能力，在仅传输模式下，MBSF网元还为应用服务器或者内容提供商提供接口。MBSU网元同样也是新的功能网元，用于处理有效载荷部分以迎合服务层能力。
本申请实施例中包括现有接口和新增接口，如图2所示，主要接口包括：UE与NG-RAN之间的Uu接口、NG-RAN与M-AMF之间的N2接口(可用于处理MBS会话)、NG-RAN与MB-UPF之间的MB-N3接口、MB-SMF与MB-UPF之间的Nx接口、MBSF与MBSU之间的Ny接口(该接口为新增接口，可用于在完全服务模式下提供服务层功能)、MB-SMF与MBSF之间的N6MB_C接口(该接口为新增接口，用于实现NF服务)、MBSF与NEF之间的NxMB_C接口(该接口为新增接口，用于实现NF服务)、MBSU与NEF之间的 NxMB_U接口(该接口为新增接口)、MB-UPF与MBSU之间的N6接口(支持MBS用户面)。
图1和图2中的各网元既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是平台(例如，云平台)上实例化的虚拟化功能。需要说明的是，在上述图1或图2所示的网络架构中，仅仅是示例性说明整个网络架构中所包括的网元。在本申请实施例中，并不限定整个网络架构中所包括的网元。
目前现有的5G网络系统暂不支持MBS会话的传输，本申请实施例提出一种会话处理方法，主要针对5G网络的MBS会话，实现对MBS会话资源的有效利用。在建立MBS会话后，MBS会话将占用大量的网络资源、接口通道，造成网络资源、接口通道的浪费。通过本申请实施例提供的方法，当没有UE对MBS会话感兴趣时，系统可以挂起处于激活状态的MBS会话，释放与MBS会话相关的资源，但仍保持MBS上下文信息；当有MBS数据到达或者有UE对该MBS会话感兴趣时，系统可以恢复或者重新激活该MBS会话，还可以重新为该MBS会话分配资源。通过上述方式，能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。
下面，通过具体实施例对本申请所示的技术方案进行详细说明。需要说明的是，下面几个实施例可以单独存在也可以相互结合。对于相同或相似的内容，例如，术语或名词的解释说明，及步骤的解释说明等，在不同的实施例中可以相互参考，不再重复说明。
结合图3至图6实施例所示的会话处理方法，对通信系统中处于激活状态的MBS会话如何进行去激活的技术方案进行详细描述。
图3为本申请实施例提供的一种会话处理方法的交互图。如图3所示，本实施例提供的方法包括如下步骤：
步骤101、接入网设备确定去激活多播广播业务MBS会话。
当MBS会话处于激活状态时，接入网设备检测该MBS会话，若处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话，则接入网设备确定去激活该MBS会话。
步骤102、接入网设备向核心网设备发送MBS会话挂起请求。
在本申请实施例中，MBS会话挂起请求包括MBS会话的标识信息、挂起原因、操作类型的至少一项。其中，MBS会话的标识信息用于唯一确定MBS会话，MBS会话的标识可以通过MBS会话的ID或者字符串表示。挂起原因包括MBS会话上没有数据传输，或者，没有UE接收MBS会话。操作类型用于指示是否释放核心网设备与接入网设备之间的隧道信息(tunnel info，或称为通道信息)，即接入网设备可以通过MBS会话挂起请求指示核心网设备释放或者保留核心网设备与接入网设备之间的隧道信息。
步骤103、接入网设备接收核心网设备的MBS会话挂起响应。其中，MBS会话挂起响应用于通知接入网设备核心网设备已接收到MBS会话挂起请求。
步骤104、接入网设备释放MBS会话的接入网资源。其中，接入网资源可以理解为接入网设备为MBS会话分配的空口资源，包括时域资源和频域资源。
作为一种示例，接入网设备可以保存去激活的MBS会话(即挂起的MBS会话)的上下文信息。其中，上下文信息包括恢复MBS会话所必需的与NGAP相关的上下文信息、MBS上下文、PDU会话上下文信息。其中，NGAP指的是接入网与核心网之间的接口协议，即NG接口应用协议。示例性的，接入网设备Node B保存的去激活的MBS会话的上下文信息还包括QoS流信息、会话类型信息(IP类型、或者以太网类型)、安全相关信息。
可选的，核心网设备也可以根据接入网设备的MBS会话挂起请求的指示，保存去激活的MBS会话的上下文信息，比如核心网中的AMF网元和SMF网元可以保存去激活的MBS会话的上下文信息。
作为一种示例，接入网设备接收核心网设备的MBS会话挂起响应之后，还可以包括：
步骤105、接入网设备释放与核心网设备的隧道信息。
在本申请实施例中，接入网设备释放与核心网设备的隧道信息是指释放接入网设备与核心网中的UPF网元之间的隧道信息。需要说明的是，上述步骤104和步骤105的执行顺序不限于图3所示的执行顺序，还可以同时执行，对此本申请实施例不作任何限制。
本申请实施例提供的会话处理方法涉及对MBS会话的去激活过程，接入网设备确定去激活MBS会话，向核心网设备发送MBS会话挂起请求，指示核心网设备将MBS会话挂起，核心网设备向接入网设备发送MBS会话挂起响应，接入网设备可释放该MBS会话的空口资源，以及与核心网设备之间的隧道信息。上述对MBS会话的去激活过程能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。
可选的，在一些实施例中，步骤102，包括：接入网设备向会话管理功能SMF网元发送MBS会话挂起请求。相应的，步骤103，包括：接入网设备接收SMF网元的MBS会话挂起响应。该示例中，接入网设备在确定MBS会话挂起时，向核心网的SMF网元发送MBS会话挂起请求，以使SMF网元根据MBS会话挂起请求执行MBS会话修改过程，具体过程可参见下述实施例。
下面结合一个具体的示例，对图3所示实施例进行详细说明。图4为本申请实施例提供的一种会话处理方法的交互图。图4以NG-RAN作为接入网设备，NG-RAN由一组通过NG接口连接到5G核心网的gNB组成，核心网设备包括AMF网元、SMF网元以及UPF网元。如图4所示，本实施例提供的方法包括如下步骤：
步骤201、接入网设备确定去激活MBS会话。其中，接入网设备确定去激活MBS会话的方式同上述实施例，具体可参见上述实施例。
步骤202、接入网设备向AMF网元发送MBS会话挂起请求。
步骤203、AMF网元向SMF网元转发MBS会话挂起请求。
在本申请实施例中，接入网设备通过AMF网元向SMF网元发送MBS会话挂起请求。具体的，MBS会话挂起请求包括MBS会话的标识信息、挂起原因、操作类型的至少一项，具体可参加上述实施例，此处不再赘述。
可选的，MBS会话挂起请求可用于指示SMF网元更新MBS会话管理SM的上下文信息。
步骤204、SMF网元向UPF网元发送MBS会话修改请求。
在本申请实施例中，SMF网元根据MBS会话挂起请求的指示，发起MBS会话修改过程。其中，MBS会话修改请求用于指示UPF网元是否释放在接入网设备与UPF网元之间的隧道信息。
可选的，在一些实施例中，在MBS会话挂起时，接入网设备与UPF网元之间的隧道信息也可以保留。需要说明的是，即使保留接入网与UPF网元之间的隧道信息，SMF网元同样需要向UPF网元发送MBS会话修改请求，以便UPF网元获知该MBS会话被挂起，UPF网元不再向UE发送数据，从而降低UPF网元的功耗。该示例保留接入网设备与UPF网元之间的隧道信息，在MBS会话从去激活状态转换为激活状态时，接入网设备无需重新分配隧道信息，可直接根据保留的隧道信息建立MBS会话。
步骤205、UPF网元向SMF网元发送MBS会话修改响应。
其中，MBS会话修改响应用于指示UPF网元已接收到MBS会话修改请求。
步骤206、SMF网元向AMF网元发送MBS会话挂起响应。
步骤207、AMF向接入网设备转发MBS会话挂起响应。
其中，MBS会话挂起响应用于指示接入网设备MBS会话已挂起。
步骤208、接入网设备释放MBS会话的接入网资源。
在本申请实施例中，由接入网设备确定是否释放或保留接入网资源，以及是否释放或保留接入网设备与UPF网元之间的隧道信息。若释放隧道信息，可以将释放隧道信息的指示信息携带在MBS会话挂起请求中，以使SMF网元根据MBS会话挂起请求发起会话修改流程，告知UPF网元释放与接入网设备之间的隧道信息。
本申请实施例中，接入网设备在确定去激活MBS会话时，通过AMF网元向SMF网元发送MBS会话挂起请求，指示SMF网元将MBS会话挂起，SMF网元还可以根据接入网设备的指示，向UPF网元发送MBS会话修改请求，以使UPF网元释放与接入网设备之间的隧道信息，在MBS会话被挂起时，接入网设备还可释放MBS会话的空口资源。上述对MBS会话的去激活过程能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。
图5为本申请实施例提供的一种会话处理方法的交互图。如图5所示，本实施例提供的方法包括如下步骤：
步骤301、SMF网元确定去激活多播广播业务MBS会话。
在本申请实施例中，当MBS会话处于激活状态时，SMF网元可以根据接收到的指示信息确定去激活MBS会话，或者根据本地策略配置信息确定去激活MBS会话。
作为一种示例，SMF网元根据接收到的指示信息确定去激活MBS会话。其中，SMF网元接收的指示信息可以包括以下至少一项：接入网设备发送的指示信息；接入与移动性管理功能AMF网元发送的指示信息；UPF网元发送的指示信息。
上述指示信息用于指示处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话。SMF网元根据该指示信息确定发起MBS会话挂起流程。
作为另一种示例，SMF网元检测到处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话，可确定去激活该MBS会话，发起MBS会话挂起流程。可选的，若没有激活的PDU会话或者没有与该多播广播业务相关的PDU会话，则SMF网元可确定去激活该MBS会话。
与图3、图4所示实施例的不同之处在于，本申请实施例中发起MBS会话挂起流程的执行主体为SMF网元，SMF网元可根据接入网设备或者其他核心网网元发送的指示信息，确定是否发起MBS会话流程，也可通过检测直接确定是否发起MBS会话流程。
步骤302、SMF网元向接入网设备发送MBS会话挂起请求。
其中，MBS会话挂起请求包括MBS会话的标识信息、挂起原因、操作类型的至少一项，具体可参见图3实施例的步骤102。
步骤303、接入网设备释放接入网资源。
作为一种示例，接入网设备在接收到MBS会话挂起请求，根据MBS会话挂起请求的指示释放接入网资源。作为另一种示例，接入网设备在接收到MBS会话挂起请求，由接入网设备确定是否释放接入网资源。
步骤304、SMF网元接收接入网设备的MBS会话挂起响应。其中，MBS会话挂起响应用于通知SMF网元接入网设备已接收到MBS会话挂起请求。
需要说明的是，在本申请实施例中，接入网设备通过AMF网元接收SMF网元发送的MBS会话挂起请求，接入网设备通过AMF网元向SMF网元发送MBS会话挂起响应。
作为一种示例，SMF网元发起MBS会话挂起流程后，SMF网元可以保存去激活的MBS会话的上下文信息。可选的，接入网设备也可以根据SMF网元的MBS会话挂起请求的指示，保存去激活的MBS会话的上下文信息。作为另一种示例，接入网设备在接收到MBS会话挂起请求，由接入网设备确定是否保存去激活的MBS会话的上下文信息。若需要保存去激活的MBS会话的上下文信息，接入网设备可以在MBS会话挂起响应中携带指示信息，该指示信息用于指示SMF网元保存去激活的MBS会话的上 下文信息。
本申请实施例提供的会话处理方法涉及对MBS会话的去激活过程，SMF网元确定去激活MBS会话，向接入网设备发送MBS会话挂起请求，指示接入网设备将MBS会话挂起，接入网设备向SMF网元发送MBS会话挂起响应，接入网设备可释放该MBS会话的空口资源，以及与核心网设备之间的隧道信息。上述对MBS会话的去激活过程能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。
可选的，在一些实施例中，SMF网元确定去激活多播广播业务MBS会话时，还包括：SMF网元向UPF网元发送MBS会话修改请求，SMF网元接收UPF网元的MBS会话修改响应。该示例中，SMF网元在确定MBS会话挂起时，向核心网的UPF网元发送MBS会话修改请求，以使UPF网元根据MBS会话修改请求释放与接入网设备之间的隧道信息，具体过程可参见下述实施例。
下面结合一个具体的示例，对图5所示实施例进行详细描述。图6为本申请实施例提供的一种会话处理方法的交互图。图6以NG-RAN作为接入网设备，UPF网元分为进行举例。如图6所示，本实施例提供的方法包括如下步骤：
步骤401、SMF网元确定去激活多播广播业务MBS会话。
本申请实施例中的SMF网元确定去激活MBS会话的方式同图5所示实施例，具体可参见上述实施例，此处不再赘述。
在本申请实施例中，SMF网元在确定去激活MBS会话之后，可以确定是否释放图6中的N3端UPF，具体的执行过程包括如下两种设计。
在一种可能的设计中，当SMF网元确定释放N3端UPF(即图6中的N3terminating UPF)时，该方法可以包括如下几个步骤：
步骤402a、SMF网元向N3端UPF发送MBS会话释放请求。
步骤402b、N3端UPF向SMF网元返回MBS会话释放响应。
步骤403a、SMF网元向数据传输端UPF(即图6中的UPF to buffer)发送MBS会话修改请求。
上述设计过程示出了SMF网元在确定去激活MBS会话时，向UPF网元发起MBS会话释放流程、MBS会话修改流程，会话释放流程用于指示UPF网元释放与接入网设备之间的隧道信息，MBS会话修改流程用于指示UPF网元更新MBS会话的上下文信息。
步骤403b、数据传输端UPF向SMF网元返回MBS会话修改请求。
在一种可能的设计中，当SMF网元确定不释放N3端UPF时，该方法可以包括如下几个步骤：
步骤404a、SMF网元向N3端UPF发送MBS会话修改请求。
步骤404b、N3端UPF向SMF网元返回MBS会话修改响应。
上述设计过程示出了SMF网元在确定去激活MBS会话时，向UPF网元发起MBS会话修改流程，MBS会话修改流程可用于指示UPF网元(即图6中的N3端UPF)删除与MBS会话关联的PDU会话的N3隧道信息，或者指示该UPF网元N3隧道信息已停用。在该情况下，UPF网元可根据SMF网元的MBS会话修改请求的指示，缓存MBS会话关联的PDU会话的下行DL数据包，或者丢弃该PDU会话的DL数据包，或者将该PDU会话的DL数据包转发给SMF网元(比如通过MBS会话修改响应转发DL数据包)。
作为一种示例，上述第一种可能的设计中，MBS会话释放过程也可用于指示UPF网元删除与MBS会话关联的PDU会话的N3隧道信息，或者指示该UPF网元N3隧道信息已停用。
步骤405、SMF网元向AMF网元发送MBS会话挂起请求。
步骤406、AMF网元向接入网设备转发MBS会话挂起请求。
步骤407、接入网设备释放接入网资源。
步骤408、接入网设备向AMF网元发送MBS会话挂起响应。
步骤409、AMF网元向SMF网元转发MBS会话挂起响应。
需要说明的是，本申请实施例中步骤402a或者步骤404a与步骤405的执行顺序不限于图6所示的执行顺序，SMF网元在确定去激活MBS会话后，可同时执行步骤402a(或者步骤404a)和步骤405，也可以顺序执行步骤402a(或者步骤404a)和步骤405，对此本申请实施例不作任何限制。
本申请实施例中，SMF网元在确定去激活MBS会话时，通过AMF网元向接入网设备发送MBS会话挂起请求，指示接入网设备将MBS会话挂起，UPF网元还可以根据SMF网元的指示释放与接入网设备之间的隧道信息，在MBS会话被挂起时，接入网设备还可释放MBS会话的空口资源。上述对MBS会话的去激活过程能够有效利用网络资源，避免对网络资源的浪费，提高系统通信质量。
上述几个实施例示出了对处于激活状态的MBS会话的去激活过程，释放了去激活的MBS会话相关的资源，避免对网络资源的浪费，提高通信系统的服务质量。下面结合图7至图10实施例所示的会话处理方法，对通信系统中处于去激活状态的MBS会话如何进行激活的技术方案进行详细描述。
图7为本申请实施例提供的一种会话处理方法的交互图。如图7所示，本实施例提供的方法包括如下步骤：
步骤501、接入网设备确定激活MBS会话。
在本申请实施例中，当MBS会话处于去激活状态时，接入网设备可以根据接收到的指示信息确定激活MBS会话，或者根据本地策略配置信息确定激活MBS会话。
作为一种示例，接入网设备根据接收到的指示信息确定激活MBS会话。其中，接入网设备接收的指示信息包括以下至少一项：UE发送的指示信息；接入与移动性管理功能AMF网元发送的指示信息；会话管理功能SMF网元发送的指示信息。
其中，UE发送的指示信息可以是RRC信息。
上述指示信息用于指示处于去激活状态的MBS会话上有数据传输，或者，有UE加入MBS会话。接入网设备根据该指示信息确定发起MBS会话激活流程。
作为另一种示例，接入网设备检测到处于去激活状态的MBS会话上有数据传输，或者，有UE接入该MBS会话，可确定激活该MBS会话，发起MBS会话激活流程。
步骤502、接入网设备向核心网设备发送MBS会话激活请求。
其中，MBS会话激活请求包括MBS会话的标识信息。
可选的，作为一种示例，若接入网设备在去激活MBS会话时，释放了与UPF网元之间的隧道信息，接入网设备向核心网设备发送的MBS会话激活请求中还可以包括接入网设备为MBS会话重新分配的隧道信息，即核心网设备与接入网设备之间的隧道信息，用于指示核心网设备建立与接入网设备之间的隧道。
步骤503、核心网设备向接入网设备发送MBS会话激活响应。其中，MBS会话激活响应用于指示核心网设备已接收到MBS会话激活请求。
步骤504、接入网设备激活或重启接入网资源。
若接入网设备在去激活该MBS会话时，释放了接入网资源，则接入网设备需要重新为该MBS会话分配接入网资源。若接入网设备在去激活该MBS会话时，没有释放接入网资源，则接入网设备无需为该MBS会话分配新的接入网资源。
步骤505、接入网设备启动或恢复与核心网设备之间的隧道信息。
在本申请实施例中，接入网设备启动或恢复与核心网设备的隧道信息是指启动或恢复接入网设备与核心网中的UPF网元之间的隧道信息。需要说明的是，上述步骤504和步骤 505的执行顺序不限于图7所示的执行顺序，还可以同时执行，对此本申请实施例不作任何限制。
本申实施例提供的会话处理方法涉及对MBS会话的激活过程，接入网设备确定激活MBS会话，向核心网设备发送MBS会话激活请求，指示核心网设备将MBS会话激活，核心网设备向接入网设备发送MBS会话激活响应，接入网设备激活或重启该MBS会话的空口资源，以及与核心网设备之间的隧道信息。上述过程可实现对处于去激活状态的MBS会话的快速建立，提高系统资源利用率，提高系统通信质量。
下面结合一个具体的示例，对图7所示实施例进行详细说明。图8为本申请实施例提供的一种会话处理方法的交互图。图8以NG-RAN作为接入网设备，核心网设备包括AMF网元、SMF网元以及UPF网元。如图8所示，本实施例提供的方法包括如下步骤：
步骤601、接入网设备确定激活MBS会话。其中，接入网设备确定激活MBS会话的方式同上述实施例，具体可参见上述实施例。
步骤602、接入网设备向AMF网元发送MBS会话激活请求。
步骤603、AMF网元向SMF网元转发MBS会话激活请求。
在本申请实施例中，接入网设备通过AMF网元向SMF网元发送MBS会话激活请求。具体的，MBS会话激活请求包括MBS会话的标识信息，还可以包括核心网中UPF网元与接入网设备之间的隧道信息(可以是接入网设备重新分配的隧道信息)。
步骤604、SMF网元向UPF网元发送MBS会话修改请求。
可选的，MBS会话修改请求中包括核心网中UPF网元与接入网设备之间的隧道信息，用于指示UPF网元建立与接入网设备之间的隧道。
步骤605、UPF网元向SMF网元发送MBS会话修改响应。其中，MBS会话修改响应可用于指示UPF网元已接收到MBS会话修改响应。
步骤606、SMF网元向AMF网元发送MBS会话激活响应。
步骤607、AMF网元向接入网设备转发MBS会话激活响应。其中，MBS会话激活响应用于指示SMF网元已接收到MBS会话激活请求。
步骤608、接入网设备激活或重启接入网资源。
本申请实施例中，接入网设备在确定激活MBS会话时，通过AMF网元向SMF网元发送MBS会话激活请求，指示SMF网元激活该MBS会话，SMF网元还可以根据MBS会话激活请求，发起MBS会话修改流程，向UPF网元发送MBS会话修改请求，以使UPF网元重新建立与接入网设备之间的隧道，在MBS会话被激活时，接入网设备重启或激活该MBS会话的空口资源。上述过程可实现对处于去激活状态的MBS会话的快速建立，提高系统资源利用率，提高系统通信质量。
图9为本申请实施例提供的一种会话处理方法的交互图。如图9所示，本实施例提供的方法包括如下步骤：
步骤701、SMF网元确定激活MBS会话。
在本申请实施例中，当MBS会话处于去激活状态时，SMF网元可以根据接收到的指示信息确定激活MBS会话，或者根据本地策略配置信息确定激活MBS会话。
作为一种示例，SMF网元根据接收到的指示信息确定激活MBS会话。其中，SMF网元接收的指示信息包括以下至少一项：UE发送的指示信息；接入网设备发送的指示信息；AMF网元发送的指示信息；UPF网元发送的指示信息。
其中，UE发送的指示信息可以携带在NAS信令中，例如PDU会话建立。接入网设备发送的指示信息可包括UE的信息和MBS会话信息。AMF网元可从UE发送的NAS消息中接收指示信息(比如服务请求消息)，或者从基站发送的N2消息中接收指示信息。PDU网元可从基站(比如Node B)或者UE接收指示信息。
上述指示信息用于指示处于去激活状态的MBS会话上有数据传输，或者，有UE 加入MBS。SMF网元根据指示信息确定发起MBS会话激活流程。
作为另一种示例，SMF网元检测到处于去激活状态的MBS会话上有数据传输，或者，有UE接入该MBS会话，可确定激活该MBS会话，发起MBS会话激活流程。
步骤702、SMF网元向接入网设备发送MBS会话激活请求。
其中，MBS会话激活请求包括MBS会话的标识信息。
步骤703、接入网设备向SMF网元发送MBS会话激活响应。其中，MBS会话激活响应用于指示接入网设备已接收到MBS会话激活请求。
步骤704、接入网设备激活或重启接入网资源。
具体的，若接入网设备在去激活该MBS会话时，释放了接入网资源，则接入网设备需要重新为该MBS会话分配接入网资源。若接入网设备在去激活该MBS会话时，没有释放接入网资源，则接入网设备无需为该MBS会话分配新的接入网资源。
可选的，若接入网设备在去激活MBS会话时，释放了与核心网中的UPF网元之间的隧道信息，则接入网设备可以重新配置隧道信息，并将该隧道信息携带在MBS会话激活响应中，以使SMF网元发起MBS会话修改流程，告知UPF网元重新配置的隧道信息。即本实施例的MBS会话激活响应中可以包括接入网设备为MBS会话重新分配的隧道信息。
需要说明的是，本申请实施例对步骤703和步骤704的执行顺序不作限定。
本申请实施例提供的会话处理方法涉及对MBS会话的激活过程，SMF网元确定激活MBS会话，向接入网设备发送MBS会话激活请求，指示接入网设备将MBS会话激活，接入网设备向SMF网元发送MBS会话激活响应，接入网设备激活或重启该MBS会话的空口资源，以及与核心网中UPF网元之间的隧道信息。上述过程可实现对处于去激活状态的MBS会话的快速建立，提高系统资源利用率，提高系统通信质量。
下面结合一个具体的示例，对图9所示实施例进行详细说明。图10为本申请实施例提供的一种会话处理方法的交互图。图10以NG-RAN作为接入网设备，核心网设备包括AMF网元、SMF网元以及UPF网元。如图10所示，本实施例提供的方法包括如下步骤：
步骤801、SMF网元确定激活MBS会话。
本申请实施例中的SMF网元确定去激活MBS会话的方式同图9所示实施例，具体可参见上述实施例，此处不再赘述。
步骤802、SMF网元向AMF网元发送MBS会话激活请求。
步骤803、AMF网元向接入网设备转发MBS会话激活请求。
步骤804、接入网设备激活或重启接入网资源。
步骤805、接入网设备向AMF网元发送MBS会话激活响应。
步骤806、AMF网元向SMF网元转发MBS会话激活响应。
在本申请实施例中，SMF网元在确定激活MBS会话时，可以发起会话修改流程，如图10所示，会话修改流程包括以下两种执行方式：
在一种可能的设计中，若被激活的MBS会话，在去激活过程中UPF网元没有释放与接入网设备之间的隧道信息，则SMF网元在确定激活MBS会话时，SMF网元直接发起图10所示的MBS会话修改流程1，UPF网元根据MBS会话修改请求，启动或恢复与核心网设备之间的隧道信息。
在另一种可能的设计中，若被激活的MBS会话，在去激活过程中UPF网元已释放与接入网设备之间的隧道信息，则SMF网元可以在接收到接入网设备的MBS会话激活响应后，发起图10所示的MBS会话修改流程2。该设计中接入网设备为重新激活的MBS会话重新配置隧道信息，并将隧道信息携带在MBS会话激活响应中，以便SMF网元根据MBS会话激活响应，向UPF网元发送会话修改请求，UPF网元根据MBS会话修改请求，建立与核心网设备之间的隧道。
具体的，会话修改流程1包括如下两个步骤：SMF网元向UPF网元发送MBS会话修改请求，MBS会话修改请求用于指示UPF网元启动或恢复与接入网设备的隧道信息；SMF网元接收UPF网元的MBS会话修改响应。
具体的，会话修改流程2包括如下两个步骤：SMF网元向UPF网元发送MBS会话修改请求，MBS会话修改请求包括接入网设备重新配置的UPF网元与接入网设备之间的隧道信息；SMF网元接收UPF网元的MBS会话修改响应。
本申请实施例提供的会话处理方法涉及对MBS会话的激活过程，SMF网元确定激活MBS会话，通过SMF网元向接入网设备发送MBS会话激活请求，指示接入网设备将MBS会话激活，接入网设备通过AMF网元向SMF网元发送MBS会话激活响应，接入网设备激活或重启该MBS会话的空口资源，以及与核心网中UPF网元之间的隧道信息。上述过程可实现对处于去激活状态的MBS会话的快速建立，提高系统资源利用率，提高系统通信质量。
上文中详细描述了本申请实施例提供的会话处理方法，下面将描述本申请实施例提供的接入网设备和会话管理设备。
图11为本申请实施例提供的一种接入网设备的结构示意图。如图11所示，本申请实施例提供的接入网设备1100，包括：
处理模块1101，用于确定去激活多播广播业务MBS会话；发送模块1102，用于向核心网设备发送MBS会话挂起请求；接收模块1103，用于接收核心网设备的MBS会话挂起响应。
可选地，处理模块1101，具体用于处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话，确定去激活MBS会话。
可选地，MBS会话挂起请求包括MBS会话的标识信息、挂起原因、操作类型的至少一项，操作类型用于指示是否释放核心网设备与接入网设备之间的隧道信息。
可选地，发送模块1102，用于向会话管理功能SMF网元发送MBS会话挂起请求；相应的，接收模块1103，用于接收SMF网元的MBS会话挂起响应。
可选地，设备1100还包括：存储模块1104，用于保存去激活的MBS会话的上下文信息。
可选地，处理模块1101，还用于：在接收模块接收核心网设备的MBS会话挂起响应之后，释放与核心网设备的隧道信息。
本申请实施例提供的接入网设备，用于执行前述图3或图4所示方法实施例中的接入网设备执行的技术方案，其实现原理和技术效果类似，在此不再赘述。
图12为本申请实施例提供的一种会话管理设备的结构示意图。如图12所示，本申请实施例提供的会话管理设备1200，包括：处理模块1201，用于确定去激活多播广播业务MBS会话；发送模块1202，用于向接入网设备发送MBS会话挂起请求；接收模块1203，用于接收接入网设备的MBS会话挂起响应。
可选地，处理模块1201，具体用于：根据接收到的指示信息，确定去激活MBS会话；指示信息用于指示处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话。
可选地，指示信息包括以下至少一项：接入网设备发送的指示信息；AMF网元发送的指示信息；UPF网元发送的指示信息。
可选地，处理模块1201，具体用于处于激活状态的MBS会话上没有数据传输，或者，没有UE接收MBS会话，确定去激活MBS会话。
可选地，MBS会话挂起请求包括MBS会话的标识信息、挂起原因、操作类型的至少一项，操作类型用于指示是否释放核心网设备与接入网设备之间的隧道信息。
可选地，设备1200还包括：存储模块1204，用于保存去激活的MBS会话的上下文信息。
可选地，发送模块1202，还用于：在处理模块确定去激活多播广播业务MBS会话时，向UPF网元发送MBS会话修改请求；接收模块1203，还用于接收UPF网元的MBS会话修改响应。
本申请实施例提供的会话管理设备，用于执行前述图5或图6所示方法实施例中的AMF网元执行的技术方案，其实现原理和技术效果类似，在此不再赘述。
图13为本申请实施例提供的一种接入网设备的结构示意图。如图13所示，本申请实施例提供的接入网设备1300，包括：处理模块1301，用于确定激活MBS会话；发送模块1302，用于向核心网设备发送MBS会话激活请求；接收模块1303，用于接收核心网设备的MBS会话激活响应。
可选地，处理模块1301，具体用于根据接收到的指示信息，确定激活MBS会话；指示信息用于指示处于去激活状态的MBS会话上有数据传输，或者，有UE加入MBS。
可选地，指示信息包括以下至少一项：UE发送的指示信息；AMF网元发送的指示信息；SMF网元发送的指示信息。
可选地，MBS会话激活请求包括MBS会话的标识信息。
可选地，MBS会话激活请求还包括核心网设备与接入网设备之间的隧道信息。
可选地，处理模块1301，还用于在接收模块接收核心网设备的MBS会话激活响应之后，启动或恢复与核心网设备之间的隧道信息。
本申请实施例提供的接入网设备，用于执行前述图7或图8所示方法实施例中的接入网设备执行的技术方案，其实现原理和技术效果类似，在此不再赘述。
图14为本申请实施例提供的一种会话管理设备的结构示意图。如图14所示，本申请实施例提供的会话管理设备1400，包括：处理模块1401，用于确定激活多播广播业务MBS会话；发送模块1402，用于向接入网设备发送MBS会话激活请求；接收模块1403，用于接收接入网设备的MBS会话激活响应。
可选地，处理模块1401，具体用于根据接收到的指示信息，确定激活MBS会话；指示信息用于指示处于去激活状态的MBS会话上有数据传输，或者，有UE加入MBS。
可选地，指示信息包括以下至少一项：UE发送的指示信息；接入网设备发送的指示信息；AMF网元发送的指示信息；UPF网元发送的指示信息。
可选地，MBS会话激活请求包括MBS会话的标识信息。
可选地，发送模块1402，还用于向UPF网元发送MBS会话修改请求，MBS会话修改请求用于指示UPF网元启动或恢复与接入网设备的隧道信息；接收模块1403，还用于接收UPF网元的MBS会话修改响应。
可选地，MBS会话激活响应包括接入网设备为MBS会话重新分配的隧道信息。
本申请实施例提供的会话管理设备，用于执行前述图9或图10所示方法实施例中的AMF网元执行的技术方案，其实现原理和技术效果类似，在此不再赘述。
需要说明的是，应理解以上终端设备或网络设备的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，处理模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理 能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(application specific integrated circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(central processing unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。
图15为本申请一个实施例提供的接入网设备的硬件结构示意图。如图15所示，本实施例的接入网设备1500，可以包括：处理器1501、存储器1502和通信接口1503。其中，存储器1502，用于存储计算机程序；处理器1501，用于执行存储器1502存储的计算机程序，以实现上述任一方法实施例中接入网设备所执行的方法。通信接口1503，用于与功能网元进行数据通信或者信号通信。
可选地，存储器1502既可以是独立的，也可以跟处理器1501集成在一起。当所述存储器1502是独立于处理器1501之外的器件时，所述接入网设备1500还可以包括：总线1504，用于连接所述存储器1502和处理器1501。
在一种可能的实施方式中，图11中的处理模块1101可以集成在处理器1501中实现，发送模块1102和接收模块1103可以集成在通信接口1503中实现。图13中的处理模块1301可以集成在处理器1501中实现，发送模块1302和接收模块1303可以集成在通信接口1503中实现。在一种可能的实施方式中，处理器1501可用于实现上述方法实施例中接入网设备的信号处理操作，通信接口1503可用于实现上述方法实施例中接入网设备的信号收发操作。
本实施例提供的接入网设备，可用于执行上述任一方法实施例中接入网设备所执行的方法，其实现原理和技术效果类似，此处不再赘述。
本申请实施例还提供一种会话管理设备，该会话管理设备可以为AMF网元。图16为本申请实施例提供的会话管理设备的结构示意图。如图16所示，本实施例的会话管理设备1600，包括：处理器1601、存储器1602和通信接口1603。其中，存储器1602，用于存储计算机程序；处理器1601，用于执行存储器1602存储的计算机程序，以实现上述任一方法实施例中的SMF网元所执行的方法。通信接口1603，用于与接入网设备或者其他功能网元进行数据通信或者信号通信。
可选地，存储器1602既可以是独立的，也可以跟处理器1601集成在一起。当所 述存储器1602是独立于处理器1601之外的器件时，所述会话管理设备1600还可以包括：总线1604，用于连接所述存储器1602和处理器1601。
在一种可能的实施方式中，图12中的处理模块1201可以集成在处理器1601中实现，发送模块1202和接收模块1203可以集成在通信接口1603中实现。图14中的处理模块1401可以集成在处理器1601中实现，发送模块1402和接收模块1403可以集成在通信接口1603中实现。在一种可能的实施方式中，处理器1601可用于实现上述任一方法实施例中SMF网元的信号处理操作，通信接口1603可用于实现上述任一方法实施例中SMF网元的信号收发操作。
本实施例提供的会话管理设备，可用于执行上述任一方法实施例中AMF网元所执行的方法，其实现原理和技术效果类似，此处不再赘述。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现前述任一方法实施例中接入网设备的技术方案。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现前述任一方法实施例中AMF网元的技术方案。
本申请实施例还提供一种程序，当该程序被处理器执行时，用于执行前述任一方法实施例中接入网设备的技术方案。
本申请实施例还提供一种程序，当该程序被处理器执行时，用于执行前述任一方法实施例中AMF网元的技术方案。
本申请实施例还提供一种计算机程序产品，包括程序指令，程序指令用于实现前述任一方法实施例中接入网设备的技术方案。
本申请实施例还提供一种计算机程序产品，包括程序指令，程序指令用于实现前述任一方法实施例中AMF网元的技术方案。
本申请实施例还提供了一种芯片，包括：处理模块与通信接口，该处理模块能执行前述方法实施例中接入网设备的技术方案。进一步地，该芯片还包括存储模块(如，存储器)，存储模块用于存储指令，处理模块用于执行存储模块存储的指令，并且对存储模块中存储的指令的执行使得处理模块执行接入网设备的技术方案。
本申请实施例还提供了一种芯片，包括：处理模块与通信接口，该处理模块能执行前述方法实施例中AMF网元的技术方案。进一步地，该芯片还包括存储模块(如，存储器)，存储模块用于存储指令，处理模块用于执行存储模块存储的指令，并且对存储模块中存储的指令的执行使得处理模块执行AMF网元的技术方案。
本申请中，“至少两个”是指两个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系；在公式中，字符“/”，表示前后关联对象是一种“相除”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中，a，b，c可以是单个，也可以是多个。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。
可以理解的是，在本申请的实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施例的实施过程构成任何限定。

Claims (54)

  1. 一种会话处理方法，其特征在于，包括：
    接入网设备确定去激活多播广播业务MBS会话，向核心网设备发送MBS会话挂起请求；
    所述接入网设备接收所述核心网设备的MBS会话挂起响应。
  2. 根据权利要求1所述的方法，其特征在于，
    所述接入网设备确定去激活所述MBS，包括：
    处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话，所述接入网设备确定去激活所述MBS会话。
  3. 根据权利要求1或2所述的方法，其特征在于，所述MBS会话挂起请求包括所述MBS会话的标识信息、挂起原因、操作类型的至少一项，所述操作类型用于指示是否释放所述核心网设备与所述接入网设备之间的隧道信息。
  4. 根据权利要求1-3中任一项所述的方法，其特征在于，
    所述向核心网设备发送MBS会话挂起请求，包括：向会话管理功能SMF网元发送所述MBS会话挂起请求；
    相应的，所述接入网设备接收所述核心网设备的MBS会话挂起响应，包括：所述接入网设备接收所述SMF网元的MBS会话挂起响应。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述接入网设备保存去激活的所述MBS会话的上下文信息。
  6. 根据权利要求1-5中任一项所述的方法，其特征在于，所述接入网设备接收所述核心网设备的MBS会话挂起响应之后，所述方法还包括：
    所述接入网设备释放与所述核心网设备的隧道信息。
  7. 一种会话处理方法，其特征在于，包括：
    会话管理功能SMF网元确定去激活多播广播业务MBS会话，向接入网设备发送MBS会话挂起请求；
    所述SMF网元接收所述接入网设备的MBS会话挂起响应。
  8. 根据权利要求7所述的方法，其特征在于，所述SMF网元确定去激活MBS会话，包括：
    所述SMF网元根据接收到的指示信息，确定去激活所述MBS会话；
    所述指示信息用于指示处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话。
  9. 根据权利要求8所述的方法，其特征在于，所述SMF网元接收的所述指示信息包括以下至少一项：
    所述接入网设备发送的指示信息；
    接入与移动性管理功能AMF网元发送的指示信息；
    用户面功能UPF网元发送的指示信息。
  10. 根据权利要求7所述的方法，其特征在于，所述SMF网元确定去激活MBS会话，包括：
    处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话，所述SMF网元确定去激活所述MBS会话。
  11. 根据权利要求7-10中任一项所述的方法，其特征在于，所述MBS会话挂起请求包括所述MBS会话的标识信息、挂起原因、操作类型的至少一项，所述操作类型用于指示是否释放核心网设备与所述接入网设备之间的隧道信息。
  12. 根据权利要求7-11中任一项所述的方法，其特征在于，所述SMF保存去激活的所述MBS会话的上下文信息。
  13. 根据权利要求7-12中任一项所述的方法，其特征在于，所述SMF网元确定去激活多播广播业务MBS会话时，所述方法还包括：
    所述SMF网元向用户面功能UPF网元发送所述MBS会话修改请求；
    所述SMF网元接收所述UPF网元的MBS会话修改响应。
  14. 一种会话处理方法，其特征在于，包括：
    接入网设备确定激活MBS会话，向核心网设备发送MBS会话激活请求；
    所述接入网设备接收所述核心网设备的MBS会话激活响应。
  15. 根据权利要求14所述的方法，其特征在于，所述接入网设备确定激活所述MBS会话，包括：
    所述接入网设备根据接收到的指示信息，确定激活所述MBS会话；
    所述指示信息用于指示处于去激活状态的所述MBS会话上有数据传输，或者，有UE加入所述MBS。
  16. 根据权利要求15所述的方法，其特征在于，所述接入网设备接收的所述指示信息包括以下至少一项：
    所述UE发送的指示信息；
    接入与移动性管理功能AMF网元发送的指示信息；
    会话管理功能SMF网元发送的指示信息。
  17. 根据权利要求14-16中任一项所述的方法，其特征在于，所述MBS会话激活请求包括所述MBS会话的标识信息。
  18. 根据权利要求17所述的方法，其特征在于，所述MBS会话激活请求还包括所述核心网设备与所述接入网设备之间的隧道信息。
  19. 根据权利要求14-18中任一项所述的方法，其特征在于，所述接入网设备接收所述核心网设备的MBS会话激活响应之后，所述方法还包括：
    所述接入网设备启动或恢复与所述核心网设备之间的隧道信息。
  20. 一种会话处理方法，其特征在于，包括：
    会话管理功能SMF网元确定激活多播广播业务MBS会话，向接入网设备发送MBS会话激活请求；
    所述SMF网元接收所述接入网设备的MBS会话激活响应。
  21. 根据权利要求20所述的方法，其特征在于，所述SMF网元确定激活所述MBS会话，包括：
    所述SMF网元根据接收到的指示信息，确定激活所述MBS会话；
    所述指示信息用于指示处于去激活状态的所述MBS会话上有数据传输，或者，有UE加入所述MBS。
  22. 根据权利要求21所述的方法，其特征在于，所述SMF网元接收的所述指示信息包括以下至少一项：
    所述UE发送的指示信息；
    所述接入网设备发送的指示信息；
    接入与移动性管理功能AMF网元发送的指示信息；
    用户面功能UPF网元发送的指示信息。
  23. 根据权利要求20-22中任一项所述的方法，其特征在于，所述MBS会话激活请求包括所述MBS会话的标识信息。
  24. 根据权利要求20-23中任一项所述的方法，其特征在于，所述方法还包括：
    所述SMF网元向UPF网元发送所述MBS会话修改请求，所述MBS会话修改请求用于指示UPF网元启动或恢复与所述接入网设备的隧道信息；
    所述SMF网元接收所述UPF网元的MBS会话修改响应。
  25. 根据权利要求20-24中任一项所述的方法，其特征在于，所述MBS会话激活响应包括所述接入网设备为所述MBS会话重新分配的隧道信息。
  26. 一种接入网设备，其特征在于，包括：
    处理模块，用于确定去激活多播广播业务MBS会话；
    发送模块，用于向核心网设备发送MBS会话挂起请求；
    接收模块，用于接收所述核心网设备的MBS会话挂起响应。
  27. 根据权利要求26所述的设备，其特征在于，所述处理模块，具体用于：
    处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话，确定去激活所述MBS会话。
  28. 根据权利要求26或27所述的设备，其特征在于，所述MBS会话挂起请求包括所述MBS会话的标识信息、挂起原因、操作类型的至少一项，所述操作类型用于指示是否释放所述核心网设备与所述接入网设备之间的隧道信息。
  29. 根据权利要求26-28中任一项所述的设备，其特征在于，
    所述发送模块，用于向会话管理功能SMF网元发送所述MBS会话挂起请求；
    相应的，所述接收模块，用于接收所述SMF网元的MBS会话挂起响应。
  30. 根据权利要求26-29中任一项所述的设备，其特征在于，所述设备还包括：存储模块，用于保存去激活的所述MBS会话的上下文信息。
  31. 根据权利要求26-30中任一项所述的设备，其特征在于，所述处理模块，还用于：在接收模块接收所述核心网设备的MBS会话挂起响应之后，释放与所述核心网设备的隧道信息。
  32. 一种会话管理设备，其特征在于，包括：
    处理模块，用于确定去激活多播广播业务MBS会话；
    发送模块，用于向接入网设备发送MBS会话挂起请求；
    接收模块，用于接收所述接入网设备的MBS会话挂起响应。
  33. 根据权利要求32所述的设备，其特征在于，所述处理模块，具体用于：
    根据接收到的指示信息，确定去激活所述MBS会话；
    所述指示信息用于指示处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话。
  34. 根据权利要求33所述的设备，其特征在于，所述指示信息包括以下至少一项：
    所述接入网设备发送的指示信息；
    AMF网元发送的指示信息；
    UPF网元发送的指示信息。
  35. 根据权利要求32所述的设备，其特征在于，所述处理模块，具体用于处于激活状态的所述MBS会话上没有数据传输，或者，没有UE接收所述MBS会话，确定去激活所述MBS会话。
  36. 根据权利要求32-35中任一项所述的设备，其特征在于，所述MBS会话挂起请求包括所述MBS会话的标识信息、挂起原因、操作类型的至少一项，所述操作类型用于指示是否释放核心网设备与所述接入网设备之间的隧道信息。
  37. 根据权利要求32-36中任一项所述的设备，其特征在于，所述设备还包括：存储模块，用于保存去激活的所述MBS会话的上下文信息。
  38. 根据权利要求32-37中任一项所述的设备，其特征在于，所述发送模块，还用于：在处理模块确定去激活多播广播业务MBS会话时，向UPF网元发送所述MBS会话修改请求；
    所述接收模块，还用于接收所述UPF网元的MBS会话修改响应。
  39. 一种接入网设备，其特征在于，包括：
    处理模块，用于确定激活MBS会话；
    发送模块，用于向核心网设备发送MBS会话激活请求；
    接收模块，用于接收所述核心网设备的MBS会话激活响应。
  40. 根据权利要求39所述的设备，其特征在于，所述处理模块，具体用于：
    根据接收到的指示信息，确定激活所述MBS会话；
    所述指示信息用于指示处于去激活状态的所述MBS会话上有数据传输，或者，有UE加入所述MBS。
  41. 根据权利要求40所述的设备，其特征在于，所述指示信息包括以下至少一项：
    所述UE发送的指示信息；
    AMF网元发送的指示信息；
    SMF网元发送的指示信息。
  42. 根据权利要求39-41中任一项所述的设备，其特征在于，所述MBS会话激活请求包括所述MBS会话的标识信息。
  43. 根据权利要求42所述的设备，其特征在于，所述MBS会话激活请求还包括所述核心网设备与所述接入网设备之间的隧道信息。
  44. 根据权利要求39-43中任一项所述的设备，其特征在于，所述处理模块，还用于在接收模块接收所述核心网设备的MBS会话激活响应之后，启动或恢复与所述核心网设备之间的隧道信息。
  45. 一种会话管理设备，其特征在于，包括：
    处理模块，用于确定激活多播广播业务MBS会话；
    发送模块，用于向接入网设备发送MBS会话激活请求；
    接收模块，用于接收所述接入网设备的MBS会话激活响应。
  46. 根据权利要求45所述的设备，其特征在于，所述处理模块，具体用于：
    根据接收到的指示信息，确定激活所述MBS会话；
    所述指示信息用于指示处于去激活状态的所述MBS会话上有数据传输，或者，有UE加入所述MBS。
  47. 根据权利要求46所述的设备，其特征在于，所述指示信息包括以下至少一项：
    所述UE发送的指示信息；
    所述接入网设备发送的指示信息；
    AMF网元发送的指示信息；
    UPF网元发送的指示信息。
  48. 根据权利要求45-47中任一项所述的设备，其特征在于，所述MBS会话激活请求包括所述MBS会话的标识信息。
  49. 根据权利要求45-48中任一项所述的设备，其特征在于，
    所述发送模块，还用于向UPF网元发送所述MBS会话修改请求，所述MBS会话修改请求用于指示UPF网元启动或恢复与所述接入网设备的隧道信息；
    所述接收模块，还用于接收所述UPF网元的MBS会话修改响应。
  50. 根据权利要求45-49中任一项所述的设备，其特征在于，所述MBS会话激活响应包括所述接入网设备为所述MBS会话重新分配的隧道信息。
  51. 一种接入网设备，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如权利要求1至6任一项所述的方法，或者如权利要求14至19任一项所述的方法。
  52. 一种会话管理设备，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得 所述处理器运行所述计算机程序执行如权利要求7至13任一项所述的方法，或者如权利要求20至25任一项所述的方法。
  53. 一种存储介质，其特征在于，所述存储介质包括计算机程序，所述计算机程序用于实现如权利要求1至6任一项所述的方法，或者，如权利要求14至19任一项所述的方法。
  54. 一种存储介质，其特征在于，所述存储介质包括计算机程序，所述计算机程序用于实现如权利要求7至13任一项所述的方法，或者，如权利要求20至25任一项所述的方法。
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