WO2021047514A1 - 一种会话管理的方法及装置 - Google Patents

一种会话管理的方法及装置 Download PDF

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Publication number
WO2021047514A1
WO2021047514A1 PCT/CN2020/114055 CN2020114055W WO2021047514A1 WO 2021047514 A1 WO2021047514 A1 WO 2021047514A1 CN 2020114055 W CN2020114055 W CN 2020114055W WO 2021047514 A1 WO2021047514 A1 WO 2021047514A1
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WO
WIPO (PCT)
Prior art keywords
mobility management
message
session
quality
bearer
Prior art date
Application number
PCT/CN2020/114055
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English (en)
French (fr)
Inventor
银宇
戚彩霞
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20863954.2A priority Critical patent/EP4024923A4/en
Publication of WO2021047514A1 publication Critical patent/WO2021047514A1/zh
Priority to US17/688,984 priority patent/US20220201537A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0257—Traffic management, e.g. flow control or congestion control per individual bearer or channel the individual bearer or channel having a maximum bit rate or a bit rate guarantee
    • 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
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • 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
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server

Definitions

  • This application relates to the field of communication technology, and in particular to a method and device for session management.
  • the access network accesses the access and mobility management function (AMF) through the N2 interface, and the core network is based on services.
  • AMF access and mobility management function
  • SBA service-based architecture
  • the 5G network also introduces the function of decoupling session management (SM) and mobility management (MM), where the MM function is executed in the AMF, and the SM function is executed in the session management function (SMF).
  • SMF decoupling session management
  • MM mobility management
  • SMF session management function
  • SMF cannot directly communicate with terminal equipment or the access network. It needs to communicate through the N1 interface of the AMF and the terminal equipment, and the N2 interface of the AMF and the access network. For this reason, the AMF needs to support the parameters or messages of the SM related functions to be transparently transmitted between the terminal equipment/access network and the SMF.
  • the 5G network adopts a large number of new technologies, such as a service-oriented framework, hypertext transfer protocol (HTTP) or transport layer security (TLS), etc. These technologies have not been applied in mobile communication networks. Not mature enough. In addition, operators need to invest in the construction of new infrastructure for 5G networks, and the investment cost is relatively high. Therefore, the application of the current 5G network is still relatively limited.
  • HTTP hypertext transfer protocol
  • TLS transport layer security
  • This application provides a method and device for session management, which are used to realize that terminal equipment accesses a 4G network through 5G technology, so as to ensure that the native access of 5G terminal equipment is supported.
  • this application provides a method for session management.
  • the method may include: a mobility management device receiving a mobility management message sent by a terminal device, where the mobility management message includes an N1 container, and the N1 container includes a session. Management message; the mobility management device converts the session management message into a bearer processing message, and the mobility management device sends the bearer processing message to the serving gateway; wherein the session management message is used to establish, update, or delete all The packet data unit PDU session of the terminal device; the bearer processing message is used to establish, update or delete the bearer of the terminal device.
  • 5G terminal equipment and access equipment access the evolved packet core network, it can support the decoupling function of 5G session management and mobility management without changing the 5G terminal equipment and access equipment to ensure the terminal
  • the device supports native access of 5G terminal devices.
  • the PDU session establishment request message is used to request the terminal device to establish a PDU session; the mobility management device is based on The PDU session establishment request message and the subscription information of the terminal device select the serving gateway for the terminal. In this way, the terminal device can accurately complete subsequent operations through a suitable service gateway.
  • the mobility management device determines the type of the bearer processing message according to the type of the session management message contained in the N1 container. In this way, the type of message processed by the bearer can be accurately determined.
  • the session management message includes 5G stream quality of service parameters
  • the mobility management device converts the 5G stream quality of service parameters into bearer quality of service parameters; all the parameters sent by the mobility management device
  • the bearer processing message includes the bearer service quality parameter. This allows accurate session management.
  • this application provides a method for session management.
  • the method may include: a mobility management device receiving a mobility management message or a session management message sent by an access device, where the mobility management message or the session management message includes N2 container, the N2 container contains session management parameters; the session management parameters are used to establish, update or delete a packet data unit PDU session of the terminal device; the mobility management device converts the session management parameters into bearer processing messages, The bearer processing message is used to establish, update or delete the bearer of the terminal device; the mobility management device sends the bearer processing message to the serving gateway.
  • 5G terminal equipment and access equipment access the evolved packet core network, it can support the decoupling function of 5G session management and mobility management without changing the 5G terminal equipment and access equipment to ensure the terminal
  • the device supports native access of 5G terminal devices.
  • the mobility management device determines the type of the bearer processing message according to the type of the session management parameter contained in the N2 container. In this way, the type of message processed by the bearer can be accurately determined.
  • the session management parameters include 5G stream quality of service parameters
  • the mobility management device converts the 5G stream quality of service parameters into bearer quality of service parameters; all the parameters sent by the mobility management device
  • the bearer processing message includes the bearer service quality parameter. This allows accurate session management.
  • the present application provides a method for session management.
  • the method may include: a mobile management device receiving a bearer processing message sent by a serving gateway, where the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the mobility management device determines an N1 container according to the bearer processing message, the N1 container contains a session management message, and the session management message is used to establish, update, or delete a packet data unit PDU session of the terminal device; the mobility management The device sends a mobility management message to the terminal device, where the mobility management message includes the N1 container.
  • 5G terminal equipment and access equipment access the evolved packet core network, it can support the decoupling function of 5G session management and mobility management without changing the 5G terminal equipment and access equipment to ensure the terminal
  • the device supports native access of 5G terminal devices.
  • the mobility management device determines the type of the session management message contained in the N1 container according to the type of the bearer processing message. In this way, the type of the session management message can be accurately determined.
  • the bearer processing message includes 4G service quality parameters
  • the mobility management device converts the 4G service quality parameters into 5G service quality parameters; the mobility management sent by the mobility management device
  • the N1 container in the message contains the 5G quality of service parameters. This allows accurate session management.
  • the 4G quality of service parameters include the maximum rate of access device name aggregation or bearer quality of service parameters;
  • the 5G quality of service parameters include the maximum rate of session aggregation or the quality of service parameters of 5G streams;
  • the mobility management The device determines the maximum rate of session aggregation according to the maximum rate of aggregation of the access device name; or, the mobility management device determines the quality of service parameters of the 5G flow according to the bearer quality of service parameters. In this way, the corresponding parameters can be accurately determined to enable accurate session management.
  • the service quality parameter of the 5G stream includes service quality rules or services.
  • Quality flow description the mobility management device determines the rule operation of the quality of service rule or the operation code of the quality of service flow description according to the type of the bearer processing message and the 4G quality of service parameter. In this way, the corresponding parameters can be accurately determined to enable accurate session management.
  • this application provides a method for session management.
  • the method may include: a mobile management device receiving a bearer processing message sent by a serving gateway, where the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the mobility management device determines an N2 container according to the bearer processing message, the N2 container contains session management parameters; the session management parameters are used to establish, update or delete a packet data unit PDU session of the terminal device; the mobility management The device sends a mobility management message or a session management message to the access device, where the mobility management message or the session management message includes the N2 container.
  • 5G terminal equipment and access equipment access the evolved packet core network, it can support the decoupling function of 5G session management and mobility management without changing the 5G terminal equipment and access equipment to ensure the terminal
  • the device supports native access of 5G terminal devices.
  • the mobility management device determines the type of the session management parameter contained in the N2 container according to the type of the bearer processing message. This can accurately determine the type of session management parameters.
  • the bearer processing message includes 4G service quality parameters
  • the mobility management device converts the 4G service quality parameters into 5G service quality parameters
  • the mobility management sent by the mobility management device The N2 container in the message or the session management message contains the 5G quality of service parameter. This allows accurate session management.
  • the 4G quality of service parameters include the maximum rate of access device name aggregation or bearer quality of service parameters;
  • the 5G quality of service parameters include the maximum rate of session aggregation or 5G flow quality of service parameters;
  • the mobility management The device determines the maximum rate of session aggregation according to the maximum rate of aggregation of the access device name; or, the mobility management device determines the quality of service parameters of the 5G flow according to the bearer quality of service parameters. In this way, the corresponding parameters can be accurately determined to enable accurate session management.
  • the present application also provides a mobility management device, which has the function of implementing the mobility management device in the method example of the first aspect described above.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the mobility management device includes a processing unit and a communication unit. These units can perform the corresponding functions in the method example of the first aspect. For details, please refer to the detailed description in the method example, which will not be described here. Go into details.
  • the structure of the mobile management device includes a communication interface and a processor, and optionally a memory.
  • the communication interface is used to send and receive data (information or signals, etc.), and to communicate with other devices in the communication system.
  • the device performs communication interaction
  • the processor is configured to support the mobility management device to perform the corresponding functions of the mobility management device in the above-mentioned method in the first aspect.
  • the memory is coupled with the processor, and it stores program instructions and data necessary for the mobile management device.
  • the present application also provides a mobility management device, which has the function of implementing the mobility management device in the method example of the second aspect described above.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the mobility management device includes a processing unit and a communication unit. These units can perform the corresponding functions in the method example of the second aspect. For details, please refer to the detailed description in the method example, which will not be described here. Go into details.
  • the structure of the mobile management device includes a communication interface and a processor, and optionally a memory.
  • the communication interface is used to send and receive data (information or signals, etc.), and to communicate with other devices in the communication system.
  • the device performs communication interaction, and the processor is configured to support the mobility management device to perform the corresponding functions of the mobility management device in the above-mentioned second aspect method.
  • the memory is coupled with the processor, and it stores program instructions and data necessary for the mobile management device.
  • the present application also provides a mobility management device that has the function of implementing the mobility management device in the method example of the third aspect.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the mobility management device includes a processing unit and a communication unit. These units can perform the corresponding functions in the method example of the third aspect. For details, please refer to the detailed description in the method example, which will not be described here. Go into details.
  • the structure of the mobile management device includes a communication interface and a processor, and optionally a memory.
  • the communication interface is used to send and receive data (information or signals, etc.), and to communicate with other devices in the communication system.
  • the device performs communication interaction, and the processor is configured to support the mobility management device to perform the corresponding functions of the mobility management device in the method of the third aspect described above.
  • the memory is coupled with the processor, and it stores program instructions and data necessary for the mobile management device.
  • the present application also provides a mobility management device that has the function of implementing the mobility management device in the method example of the fourth aspect.
  • the function can be realized by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the mobility management device includes a processing unit and a communication unit. These units can perform the corresponding functions in the method example of the fourth aspect. For details, please refer to the detailed description in the method example, which will not be described here. Go into details.
  • the structure of the mobile management device includes a communication interface and a processor, and optionally a memory.
  • the communication interface is used to send and receive data (information or signals, etc.), and to communicate with other devices in the communication system.
  • the device performs communication interaction, and the processor is configured to support the mobility management device to perform the corresponding functions of the mobility management device in the above-mentioned fourth aspect method.
  • the memory is coupled with the processor, and it stores program instructions and data necessary for the mobile management device.
  • this application also provides a communication system, which includes at least the mobility management device mentioned in the above design. Further, the mobility management device in the communication system may execute any method executed by the mobility management device in the foregoing methods.
  • the present application provides a computer-readable storage medium that stores computer-executable instructions, and when called by the computer, the computer-executable instructions are used to make the computer Implementation of any one of the above-mentioned first aspect or any one of the possible designs of the first aspect, any one of the second or second aspects of any possible design, any one of the third aspects or any one of the third aspects Any one of the methods in the design, the fourth aspect or any one of the possible designs in the fourth aspect.
  • this application provides a computer program product containing instructions that, when run on a computer, causes the computer to execute any one of the possible designs, the second aspect, or the first aspect of the first aspect or the first aspect mentioned above. Any method in any possible design of the second aspect, any method in any possible design of the third aspect or the third aspect, any possible method of the fourth aspect or the fourth aspect Any method in design.
  • the present application provides a chip, which is coupled with a memory, and is used to read and execute program instructions stored in the memory, so as to realize the first aspect or any one of the possibilities of the first aspect.
  • Figure 1 is a schematic diagram of a 5G network architecture in the prior art
  • Figure 2a is a schematic diagram of the architecture of a communication system provided by this application.
  • Figure 2b is a 4G NSA architecture diagram provided by this application.
  • FIG. 3 is a flowchart of a method for session management provided by this application.
  • FIG. 4 is a flowchart of another session management method provided by this application.
  • FIG. 5 is a flowchart of another session management method provided by this application.
  • FIG. 6 is a flowchart of another method for session management provided by this application.
  • FIG. 7 is a flowchart of an example of a session management method provided by this application.
  • FIG. 8 is a flowchart of an example of another method for session management provided by this application.
  • FIG. 9 is a flowchart of an example of another session management method provided by this application.
  • FIG. 10 is a flowchart of an example of another session management method provided by this application.
  • FIG. 11 is a schematic structural diagram of a mobile management device provided by this application.
  • FIG. 12 is a structural diagram of a mobile management device provided by this application.
  • the embodiments of the present application provide a method and device for session management, which are used to implement a terminal device to access a 4G network through a 5G technology, so as to ensure that the native access of the 5G terminal device is supported.
  • the method and device described in this application are based on the same inventive concept. Since the method and the device have similar principles for solving the problem, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • Figure 1 shows the architecture of a 5G network in the prior art.
  • the architecture of the 5G network includes a network slice selection function (NSSF) device and a network exposure function (NEF) device , Network function library function ((network function, NF) repository function, NRF) equipment, policy control function (PCF) equipment, unified data management (unified data management, UDM) equipment, application function (AF) ) Equipment, authentication server function (authentication server function, AUSF) equipment, core network access and mobility management function (access and mobility management function, AMF) equipment, session management function (session management function, SMF) equipment, service communication Agent SCP, terminal equipment (also known as user equipment (UE)), radio access network (RAN) equipment, user plane function (UPF), and data network (data network, DN) ).
  • NSF network slice selection function
  • NRF network exposure function
  • the terminal equipment is connected to the access and mobility management function equipment through the N1 interface
  • the access network is connected to the access and mobility management function equipment through the N2 interface.
  • the core network is implemented based on a service-oriented architecture.
  • the 5G network also introduces the function of decoupling session management (SM) and mobility management (MM), where the MM function is executed in the AMF, and the SM function is executed in the SMF.
  • SMF cannot directly communicate with terminal equipment or the access network. It needs to communicate through the N1 interface of the AMF and the terminal equipment, and the N2 interface of the AMF and the access network. For this reason, the AMF needs to support the parameters or messages of the SM related functions to be transparently transmitted between the terminal equipment/access network and the SMF.
  • the 5G network adopts a large number of new technologies, such as a service framework, hypertext transfer protocol (HTTP) or transport layer security (TLS), etc., these technologies have not been applied in mobile communication networks. Not mature enough.
  • HTTP hypertext transfer protocol
  • TLS transport layer security
  • operators need to invest in the construction of new infrastructure for 5G networks, and the investment cost is relatively high, which leads to limited 5G network applications.
  • this application is based on the compatibility of the 5G network and the fourth generation (4th generation, 4G) network, and proposes that the terminal device and the access network can be connected to the evolved packet core network (evolved packet core, EPC) through the N1 or N2 interface. ), in the case of reuse of EPC network infrastructure, support 5G native access.
  • EPC evolved packet core network
  • the communication system architecture may include terminal devices, access networks, mobile management devices, service gateways, data gateways, and reports.
  • Text data network where:
  • Terminal equipment which can also be referred to as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • the terminal device may include a handheld device with a wireless connection function, a vehicle-mounted device, and the like.
  • the terminal devices may be: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid (smart grid) Wireless terminals in ), wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, etc.
  • the terminal equipment is accessed through the local wireless access network.
  • the mobile management device is responsible for the location management, connection management, security authentication, gateway selection and other functions of the mobile user equipment.
  • the serving gateway is the local access gateway of the terminal device, responsible for connection management and data forwarding related to the access technology.
  • the data gateway is the gateway for terminal devices to access external data networks.
  • the EPC network can also be a network in which the control plane and the user plane are separated, that is, the control plane and the user plane of the service gateway and the data gateway are separated, and are divided into the service gateway of the user plane, the service gateway of the control plane, the data gateway of the user plane and the data gateway of the user plane.
  • the data gateway of the control plane is responsible for connection management and data forwarding control related to the access technology, and the service gateway of the user plane is responsible for data forwarding.
  • the data gateway on the control plane is responsible for data forwarding control, and the data gateway on the user plane is responsible for data forwarding.
  • the service gateway on the control plane can be deployed together with the data gateway on the control plane, and the service gateway on the user plane can also be deployed together with the data gateway on the user plane.
  • the terminal device can be a 5G terminal; for the evolved universal terrestrial radio access network (evolved universal terrestrial radio access network, evolved E-UTRAN), the new radio (new radio, NR) access network, access
  • the equipment can be the next generation evolved NodeB (ng-eNB) or the next generation NodeB (gNB) in the 5G mobile communication system
  • the core network is the network element of the EPC network
  • the mobile management equipment can be
  • the mobility management entity mobility management entity
  • the serving gateway may be a serving gateway (serving gateway, S-GW)
  • the data gateway may be a packet data network gateway (packet data network gateway, PDN-GW).
  • the serving gateway can be the serving gateway user plane (SGW-U) of the user plane and the serving gateway control plane (SGW-C) of the control plane
  • the data gateway can be The data gateway on the user plane (packet data network gateway user plane, PGW-U) and the data gateway on the control plane (packet data network gateway control plane, PGW-C).
  • Mobile management equipment and service gateways can be enhanced on the basis of the existing EPC network to support the native access of 5G terminal equipment.
  • the mobility management device when the mobility management device is enhanced, the mobility management device may be referred to as an enhanced mobility management device. Enhance the functions of mobile management equipment to support the decoupling of 5G session management and mobility management.
  • the terminal device in the 4G non-standalone architecture is a 4G terminal device, which is connected to the mobile management device through 4G NAS, and the main access network is connected to the mobile management device through the 4G S1 interface.
  • the user plane data packets of the terminal equipment can be forwarded through the primary access network and the secondary access network at the same time.
  • the primary access network is for E-UTRAN, and the corresponding access device is an evolved NodeB (eNodeB).
  • the second access network is an evolved E-UTRAN or NR access network, and the corresponding access device is ng-eNB or gNB.
  • the high bandwidth provided by the second access network enables 4G terminal devices to enjoy a service experience comparable to that of the 5G network.
  • the NSA architecture requires the deployment of a primary access network and a secondary access network, which is suitable for local hotspot deployment, and the entire network deployment is costly. Therefore, the use of the network shown in FIG. 2a provided by the present application can avoid the above-mentioned problems and flexibly realize the access to the 4G network through the 5G technology.
  • FIG. 2a and FIG. 2b the architecture of the communication system (or network) shown in FIG. 2a and FIG. 2b is not limited to only include the devices shown in the figures, and may also include other devices not shown in the figures. Specifically, this application is here I will not list them one by one.
  • the method for session management provided by the embodiment of the present application is applicable to the communication system as shown in FIG. 2a.
  • the specific process of the method may include:
  • Step 301 The mobility management device receives the mobility management message sent by the terminal device.
  • the mobility management message contains the N1 container, and the N1 container contains the session management message; the session management message is used to establish, update or delete the A packet data unit (PDU) session of a terminal device.
  • PDU packet data unit
  • the mobility management device is an enhanced mobility management device that enhances the existing mobility management device.
  • the terminal device sends the mobility management message to the mobility management device through the access device, the terminal device sends the mobility management message to the access device, and then the access device Forward the mobility management message to the mobility management device.
  • the mobility management device may receive the mobility management message sent by the terminal device through the 5G NAS protocol.
  • the N1 container may be a payload container.
  • the mobility management message may be an uplink non-access stratum (NAS) transmission message
  • the session management message may be a PDU session establishment request message.
  • NAS uplink non-access stratum
  • the PDU session establishment request message is used to request the terminal device to establish a PDU session; the mobility management The device selects the serving gateway for the terminal according to the PDU session establishment request message and the subscription information of the terminal device.
  • the request to establish a PDU session for the terminal device is a request to establish a first PDU session for the terminal device.
  • the mobility management device does not need to select the serving gateway.
  • Step 302 The mobility management device converts the session management message into a bearer processing message, where the bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the mobility management device determines the type of the bearer processing message according to the type of the session management message contained in the N1 container.
  • the session management message includes 5G stream quality of service parameters
  • the mobility management device converts the 5G stream quality of service parameters into bearer quality of service parameters; the bearer sent by the mobility management device
  • the processing message includes the bearer quality of service parameter.
  • the quality of service parameter of the 5G flow is a 5G quality of service (QoS) parameter
  • the quality of service parameter is a 4G bearer QoS parameter.
  • Step 303 The mobility management device sends the bearer processing message to the serving gateway.
  • the bearer processing message may be a tunneling protocol (GPRS tunneling protocol, GTP) message.
  • GTP tunneling protocol
  • the mobility management device sends the bearer processing message to the serving gateway through the control plane tunnel endpoint protocol GTP-C.
  • the serving gateway forwards the bearer processing message to the data gateway.
  • 5G terminal devices and access devices access the evolved packet core network
  • 5G terminal devices and access devices do not need to be changed to support 5G session management and mobility Manage decoupling functions to ensure that the terminal device supports 5G native access.
  • Another method for session management provided by the embodiment of the present application is applicable to the communication system as shown in FIG. 2a.
  • the specific process of the method may include:
  • Step 401 The mobility management device receives a mobility management message or a session management message sent by an access device, where the mobility management message or the session management message includes an N2 container, and the N2 container includes session management parameters; the session management parameters Used to establish, update or delete the packet data unit PDU session of the terminal device.
  • the mobility management device is an enhanced mobility management device that enhances the existing mobility management device.
  • the mobility management device receives a mobility management message or a session management message sent by the access device through a next-generation application layer protocol (NGAP).
  • NGAP next-generation application layer protocol
  • the mobility management message is an initial context response message
  • the session management parameter is a PDU session resource establishment response conversion cell
  • the session management message is a PDU session resource update response message
  • the session management The parameter is the PDU session resource update response conversion cell.
  • Step 402 The mobility management device converts the session management parameter into a bearer processing message, and the bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the mobility management device determines the type of the bearer processing message according to the type of the session management parameter contained in the N2 container.
  • the session management parameters include 5G stream quality of service parameters
  • the mobility management device converts the 5G stream quality of service parameters into bearer quality of service parameters; the bearer sent by the mobility management device
  • the processing message includes the bearer quality of service parameter.
  • the quality of service parameter of the 5G flow is a 5G quality of service (QoS) parameter
  • the quality of service parameter is a 4G bearer QoS parameter.
  • Step 403 The mobility management device sends the bearer processing message to the serving gateway.
  • the bearer processing message may be a tunneling protocol (GPRS tunneling protocol, GTP) message.
  • GTP tunneling protocol
  • the mobility management device sends the bearer processing message to the serving gateway through the GTP-C protocol.
  • the serving gateway forwards the bearer processing message to the data gateway.
  • 5G terminal devices and access devices access the evolved packet core network
  • 5G terminal devices and access devices do not need to be changed to support 5G session management and mobility Manage decoupling functions to ensure that the terminal device supports the native access of 5G terminal devices.
  • Another method for session management provided by the embodiment of the present application is applicable to the communication system as shown in FIG. 2a.
  • the specific process of the method may include:
  • Step 501 The mobility management device receives a bearer processing message sent by the serving gateway, where the bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the mobility management device is an enhanced mobility management device that enhances the existing mobility management device.
  • the mobility management device may receive the bearer processing message sent by the serving gateway through the GTP-C protocol.
  • the serving gateway first receives the bearer processing message sent by the data gateway.
  • Step 502 The mobility management device determines an N1 container according to the bearer processing message, the N1 container contains a session management message, and the session management message is used to establish, update or delete a PDU session of the terminal device.
  • the mobility management device determines the type of the session management message contained in the N1 container according to the type of the bearer processing message.
  • Step 503 The mobility management device sends a mobility management message to the terminal device, where the mobility management message includes the N1 container.
  • the mobility management device may send the mobility management message to the terminal device through the 5G NAS protocol.
  • the mobility management device when the mobility management device sends a mobility management message to the terminal device, the mobility management device first sends the mobility management message to the access device, and then the access device sends the mobility management message to the terminal device. Describes the mobility management message.
  • the bearer processing message includes 4G service quality parameters
  • the mobility management device converts the 4G service quality parameters into 5G service quality parameters; the mobility management device sends the 4G service quality parameters.
  • the N1 container in the mobility management message includes the 5G quality of service parameter.
  • the 4G quality of service parameters include the maximum rate of access device name aggregation or the bearer quality of service parameters;
  • the 5G quality of service parameters include the maximum rate of session aggregation or the quality of service parameters of 5G streams;
  • the mobility management device is based on the The maximum rate of access device name aggregation determines the maximum rate of session aggregation; or, the mobility management device determines the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • the mobility management device determines the rule operation of the quality of service rule or the operation code of the quality of service flow description according to the type of the bearer processing message and the 4G quality of service parameter.
  • the session management message in the N1 container is a PDU session update request message
  • the mobility management message is a downlink NAS transmission message
  • 5G terminal devices and access devices access the evolved packet core network
  • 5G terminal devices and access devices do not need to be changed to support 5G session management and mobility Manage decoupling functions to ensure that the terminal device supports the native access of 5G terminal devices.
  • Another method for session management provided by the embodiment of the present application is applicable to the communication system as shown in FIG. 2a.
  • the specific process of the method may include:
  • Step 601 The mobility management device receives a bearer processing message sent by the serving gateway, where the bearer processing message is used to establish, update or delete a bearer of the terminal device.
  • the mobility management device is an enhanced mobility management device that enhances the existing mobility management device.
  • the mobility management device may receive the bearer processing message sent by the serving gateway through the GTP-C protocol.
  • the serving gateway first receives the bearer processing message sent by the data gateway.
  • Step 602 The mobility management device determines an N2 container according to the bearer processing message, the N2 container contains session management parameters; the session management parameters are used to establish, update or delete a packet data unit PDU session of the terminal device.
  • the mobility management device determines the type of the session management parameter contained in the N2 container according to the type of the bearer processing message.
  • Step 603 The mobility management device sends a mobility management message or a session management message to the access device, where the mobility management message or the session management message includes the N2 container.
  • the mobility management device may send a mobility management message or a session management message to the access device through the NGAP protocol.
  • the bearer processing message includes 4G service quality parameters
  • the mobility management device converts the 4G service quality parameters into 5G service quality parameters; the mobility management device sends the 4G service quality parameters.
  • the N2 container in the mobility management message or the session management message includes the 5G quality of service parameter.
  • the 4G service quality parameter includes the maximum rate of access device name aggregation or the bearer quality of service parameter;
  • the 5G service quality parameter includes the maximum rate of session aggregation or the quality of service parameter of the 5G stream;
  • the mobility management device The maximum rate of aggregation of the access device name determines the maximum rate of session aggregation; or, the mobility management device determines the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • the session management message may be a PDU session resource update request message
  • the N2 container is a PDU session resource update request conversion type.
  • 5G terminal devices and access devices access the evolved packet core network
  • 5G terminal devices and access devices do not need to be changed to support 5G session management and mobility Manage decoupling functions to ensure that the terminal device supports the native access of 5G terminal devices.
  • the embodiments of the present application provide an example of a method for session management.
  • the mobile management device is shown as an enhanced mobile management device.
  • the specific process of this example may include:
  • Step 701 The terminal device sends a first mobility management message to the enhanced mobility management network element.
  • the first mobility management message includes an N1 container, and the N1 container includes a session management message; the session management message is used to establish, update, or delete a PDU session of the terminal device.
  • the first mobility management message is the mobility management message involved in the embodiment shown in FIG. 3.
  • the terminal device first sends the first mobility management message to the access device, and then the access device forwards the first mobility management message to the enhanced mobility management device.
  • Step 702 The enhanced mobility management device converts the session management message into a first bearer processing message, where the first bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the first bearer processing message is the bearer processing message involved in the embodiment shown in FIG. 3.
  • Step 703 The enhanced mobility management device sends the first bearer processing message to the serving gateway.
  • Step 704 The serving gateway sends the first bearer processing message to the data gateway.
  • Step 705 The data gateway sends a second bearer processing message to the serving gateway, where the second bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the second bearer processing message is the bearer processing message involved in the embodiment shown in FIG. 5.
  • Step 706 The serving gateway sends the second bearer processing message to the enhanced mobility management device.
  • Step 707 The enhanced mobility management device determines an N1 container according to the second bearer processing message, the N1 container contains a session management message, and the session management message is used to establish, update, or delete a PDU session of the terminal device.
  • Step 708 The enhanced mobility management device sends a second mobility management message to the terminal device, where the second mobility management message includes the N1 container.
  • the second mobility management message is the mobility management message involved in the embodiment shown in FIG. 5.
  • the enhanced mobility management device first sends the second mobility management message to the access device, and then the access device sends the second mobility management message to the terminal device.
  • the embodiments of the present application also provide an example of another method for session management.
  • the mobile management device is shown as an enhanced mobile management device. Referring to Figure 8, the specific process of this example may include:
  • Step 801 The access device sends a first mobility management message or a first session management message to the enhanced mobility management device, where the first mobility management message or the first session management message includes the N2 container, and the N2 container includes the session.
  • Management parameters; the session management parameters are used to establish, update or delete a packet data unit PDU session of the terminal device.
  • the first mobility management message or the first session management message is the mobility management message or the session management message involved in the embodiment shown in FIG. 4.
  • Step 802 The enhanced mobility management device converts the session management parameter into a first bearer processing message, where the first bearer processing message is used to establish, update or delete a bearer of the terminal device.
  • the first bearer processing message is the bearer processing message involved in the embodiment shown in FIG. 4.
  • Step 803 The enhanced mobility management device sends the first bearer processing message to the serving gateway.
  • Step 804 The serving gateway sends the first bearer processing message to the data gateway.
  • Step 805 The data gateway sends a second bearer processing message to the serving gateway, where the second bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the second bearer processing message is the bearer processing message involved in the embodiment shown in FIG. 6.
  • Step 806 The serving gateway sends the second bearer processing message to the enhanced mobility management device.
  • Step 807 The enhanced mobility management device determines an N2 container according to the second bearer processing message, where the N2 container contains session management parameters; the session management parameters are used to establish, update or delete the packet data unit of the terminal device PDU session.
  • Step 808 The enhanced mobility management device sends a second mobility management message or a second session management message to the access device, where the second mobility management message or the second session management message includes the N2 container.
  • the second mobility management message or the second session management message is the mobility management message or the session management message involved in the embodiment shown in FIG. 6.
  • the embodiments of the present application provide an example of a method for session management.
  • the mobile management device is shown as an enhanced mobile management device.
  • This example shows the specific process of session management in the PDU session establishment process. Referring to Figure 9, the specific process of this example may include:
  • Step 901 The terminal device sends an uplink NAS transmission message to the enhanced mobility management device, where the uplink NAS transmission message includes an N1 container, and the N1 container includes a session management message, and the session management message is a PDU session establishment request message.
  • the terminal device when the terminal device has a service to be performed, it initiates a PDU session establishment process, and requests the establishment of a PDU session corresponding to the service, thereby performing step 901.
  • the uplink NAS transmission message further includes an N1 container type.
  • the terminal device first sends the uplink NAS transmission message to the access device, and then the access device forwards the uplink NAS transmission message to the enhanced mobility management device.
  • Step 902 The enhanced mobility management device parses the N1 container, and obtains the session management message contained in the N1 container, that is, the PDU session establishment request message.
  • the enhanced mobility management device determines according to the type of the N1 container that the N1 container carries N1 session management information, then the enhanced mobility management network element parses the session management message contained in the N1 container, that is, PDU Session establishment request message.
  • Step 903 The enhanced mobility management network element sends a session establishment request message to the serving gateway.
  • the session establishment request message is a GTP message.
  • the session establishment request message includes information obtained from the N1 container, such as packet data network type (PDN Type), extended protocol configuration options (ePCO), and so on.
  • PDN Type packet data network type
  • ePCO extended protocol configuration options
  • Step 904 The serving gateway sends the session establishment request message to the data gateway for requesting the data gateway to establish a corresponding PDN connection.
  • Step 905 Establish a connection access network (Internet Protocol-Connectivity Access Network, IP-CAN) session of the PDN connection between the data gateway and the policy and charging rule function entity to obtain corresponding charging and services Quality and other strategies.
  • IP-CAN Internet Protocol-Connectivity Access Network
  • Step 906 The data gateway sends a session establishment response message to the service gateway.
  • the session establishment response message includes bearer service quality parameters, aggregate maximum bit rate (APN-AMBR), and other information.
  • Step 907 The serving gateway sends a session establishment response message to the enhanced mobility management device, and the session establishment response message includes information such as bearer service quality parameters, access device name aggregation maximum rate, and so on.
  • Step 908 The enhanced mobility management device determines the N1 container and the N2 container.
  • the N1 container contains the PDU session establishment response message.
  • the PDU session establishment response message may include the 5G QoS flow quality of service parameter 1 (5G quality of service rules and QoS). Flow description)
  • the N2 container may include PDU session resource establishment request conversion information, where the PDU session resource establishment request conversion information may include the maximum rate of session aggregation and the quality of service parameter 2 of the 5G QoS flow.
  • the enhanced mobility management device determines the maximum rate of session aggregation according to the maximum rate of access device name aggregation. For example, the enhanced mobility management device may directly determine the maximum rate of access device name aggregation as the maximum rate of session aggregation according to a local policy, for example, the maximum rate of session aggregation may be half of the maximum rate of access device name aggregation, and so on.
  • QCI QoS class identifier
  • 5QI 5G QoS Identifier
  • the enhanced mobility management device maps the bearer quality of service parameters to the QoS parameter 1 of the 5G QoS flow, which includes 5G service quality rules and QoS flow descriptions, for example: the enhanced mobility management device assigns a quality of service rule identifier; sets the default Or non-default flags, the enhanced mobility management device can set the service quality rules established during the PDU session establishment process to the default flags; determine the rule operation, for example, in this process, set the rule operation to establish a new service quality rule; OK QoS flow description opcode, as in this process, set the opcode to create a new QoS flow description.
  • the enhanced mobility management device determines the mapped bearer context according to the bearer quality of service parameters.
  • Step 909 The enhanced mobility management device sends a PDU session resource establishment request message to the access device, where the PDU session resource establishment request message includes a downlink NAS transmission message sent to the terminal device, wherein the downlink NAS transmission message includes an N1 container And the type of the N1 container, the type of the N1 container can be set to N1 session management information, and the N1 session management information is a PDU session establishment acceptance message.
  • the PDU session resource establishment request message further includes an N2 container, and the N2 container includes PDU session resource establishment request conversion information.
  • Step 910 The access device sends the downlink NAS transmission message to the terminal device.
  • Step 911 The access device sends a PDU session resource establishment response message to the enhanced mobility management device.
  • the PDU session resource establishment response message includes an N2 container, and the N2 container includes PDU session resource establishment response conversion information.
  • the PDU session resource establishment response conversion information includes user plane forwarding information of the access device.
  • Step 912 The enhanced mobility management device parses the N2 container to obtain user plane forwarding information of the access device.
  • Step 913 The enhanced mobility management device sends a bearer update request message to the serving gateway, where the bearer update request message includes user plane forwarding information of the access device.
  • Step 914 The serving gateway sends an update bearer response message to the enhanced mobility management device, indicating that the PDU session is successfully established.
  • the embodiments of the present application provide an example of a method for session management.
  • the mobile management device is shown as an enhanced mobile management device.
  • This example shows the specific process of session management in the PDU session update procedure. Referring to Figure 10, the specific process of this example may include:
  • Step 1001 The policy and charging rule function entity sends an IP-CAN session update request to the data gateway to update the service quality policy and other information.
  • Step 1002 The data gateway sends a bearer processing message to the serving gateway, where the bearer processing message is used to establish, update, or delete a bearer of the terminal device.
  • the bearer processing message includes bearer service quality parameters, access device name aggregation maximum rate and other information.
  • the bearer processing message may be a bearer establishment request message, a bearer update request message, or a bearer deletion request message, etc.
  • Step 1003 The serving gateway sends the bearer processing message to the enhanced mobility management device, where the bearer processing message includes bearer service quality parameters, access point name aggregation maximum rate, and other information.
  • Step 1004 The enhanced mobility management device determines the N1 container and the N2 container.
  • the N1 container contains a PDU session update request message.
  • the PDU session update request message may include the 5G QoS flow quality of service parameter 1 (5G quality of service rules and QoS). Flow description), the maximum rate of session aggregation or the mapped bearer context.
  • the N2 container may include PDU session resource update request conversion information, where the PDU session resource update request conversion information includes the above-mentioned maximum session aggregation rate and the QoS parameter 2 of the 5G QoS flow.
  • the enhanced mobility management device determines the maximum rate of session aggregation according to the maximum rate of access device name aggregation. For example, the enhanced mobility management device may directly determine the maximum rate of access point name aggregation as the maximum rate of session aggregation according to a local policy; for another example, the maximum rate of session aggregation may be half of the maximum rate of access point name aggregation.
  • the enhanced mobility management device maps the bearer quality of service parameters to 5G QoS flow quality of service parameter 1, that is, 5G service quality rules and QoS flow descriptions, for example: the enhanced mobility management device assigns a quality of service rule identifier; determines the rule operation, According to the bearer processing message and the bearer quality of service parameters contained in it, the rule operation is determined to be establishing new rules, deleting existing rules, updating existing rules and data packet filters, updating existing rules and replacing data packets Filter, update the existing rules and delete the packet filter, update the existing rules without updating the packet filter; determine the QoS flow description operation code, and determine according to the bearer processing message and the bearer service quality parameters contained in it The operation code is to create a new QoS flow description, delete the existing QoS flow description, and update the existing QoS flow description.
  • the operation code is to create a new QoS flow description; if an update bearer request message is received, the operation code is to update an existing QoS flow description; if a bearer deletion request message is received, the operation is The code is to delete the existing QoS flow description.
  • the enhanced mobility management device determines the mapped bearer context according to the bearer processing message and the bearer quality of service parameters contained in it.
  • Step 1005 The enhanced mobility management device sends a PDU session resource update request message to the access device, where the PDU session resource update request message contains a downlink NAS transmission message sent to the terminal device, wherein the downlink NAS transmission message contains The type of the N1 container and the N1 container, and the type of the N1 container is set to N1 session management information, and the N1 session management information includes a PDU session update request message.
  • the PDU session resource update request message also includes an N2 container, and the N2 container includes PDU session resource update request conversion information.
  • Step 1006 The access device sends the downlink NAS transmission message to the terminal device.
  • Step 1007 The terminal device sends an uplink NAS transmission message to the enhanced mobility management device, where the uplink NAS transmission message includes the types of the N1 container and the N1 container, and the N1 container includes a PDU session update complete message.
  • the terminal device first sends the uplink NAS transmission message to the access device, and then the access device forwards the uplink NAS transmission message to the enhanced mobility management device.
  • Step 1008 The access device sends a PDU session resource update response message to the enhanced mobility management device.
  • the PDU session resource update response message includes an N2 container, and the N2 container includes PDU session resource update response conversion information.
  • Step 1009 The enhanced mobility management device parses the N1 container and the N2 container, and learns that the terminal device and the access device successfully update the PDU session.
  • Step 1010 The enhanced mobility management device sends a bearer processing response message to the serving gateway, and the bearer processing response message is used to notify the terminal device that the bearer is successfully established, updated, or deleted.
  • the bearer processing response message may be a bearer establishment response message, a bearer update response message, or a bearer deletion response message.
  • Step 1011 The serving gateway sends the bearer processing response message to the data gateway, indicating that the bearer is successfully established, updated, or deleted.
  • Step 1012 The data gateway sends an IP-CAN session update response message to the policy and charging rule function entity.
  • the enhanced mobility management device needs to determine the type of message sent to the terminal device or the access device according to the received GTP message and the quality of service parameters carried by it. If it receives a bearer establishment, update or delete message, it will be sent to the terminal
  • the device session management message is a PDU session update request message, and the message sent to the access device is a PDU session resource update request message.
  • the enhanced mobility management device needs to determine the GTP message according to the received session management message sent by the terminal device and the 5G service quality rule or QoS flow description carried, such as the terminal device sending a PDU session update request message, where the 5G service quality rule is
  • the rule operation is to delete the existing rule or the operation code in the QoS flow description is to delete the existing QoS flow description, then the enhanced mobility management device sends a delete bearer request to the serving gateway, or the terminal device sends a PDU session update request message,
  • the rule operation in the 5G service quality rules is to update the existing rules without updating the packet filter or the operation code in the QoS flow description is to update the existing QoS flow description, then the enhanced mobility management device sends an update bearer request to the service gateway .
  • the embodiments of the present application also provide a mobility management device, which is applied to the communication system as shown in FIG. 2a for implementing the session management method shown in the above embodiment.
  • the mobility management device 1100 includes: a communication unit 1101 and a processing unit 1102.
  • the communication unit 1101 is configured to receive a mobility management message sent by a terminal device, the mobility management message includes an N1 container, and the N1 container includes a session management message; the session management message is used to establish, update, or delete The packet data unit PDU session of the terminal device;
  • the processing unit 1102 is configured to convert the session management message into a bearer processing message, and the bearer processing message is used to establish, update, or delete a bearer of the terminal device;
  • the communication unit 1101 is further configured to send the bearer processing message to the service gateway.
  • the processing The unit 1102 is further configured to select the serving gateway for the terminal according to the PDU session establishment request message and the subscription information of the terminal device.
  • the processing unit 1102 is further configured to determine the type of the bearer processing message according to the type of the session management message contained in the N1 container.
  • the processing unit 1102 is further configured to: convert the quality of service parameters of the 5G stream into bearer quality of service parameters;
  • the bearer processing message includes the bearer quality of service parameter.
  • the communication unit 1101 is configured to receive a mobility management message or a session management message sent by an access device, the mobility management message or the session management message includes an N2 container, and the N2 container includes session management parameters; the session management The parameters are used to establish, update or delete the packet data unit PDU session of the terminal device;
  • the processing unit 1102 is configured to convert the session management parameter into a bearer processing message, and the bearer processing message is used to establish, update, or delete a bearer of the terminal device;
  • the communication unit 1101 is further configured to send the bearer processing message to the service gateway.
  • the processing unit 1102 is further configured to determine the type of the bearer processing message according to the type of the session management parameter contained in the N2 container.
  • the processing unit 1102 is further configured to: convert the 5G stream quality of service parameters into bearer quality of service parameters; the communication unit 1101 sends The bearer processing message includes the bearer quality of service parameter.
  • the communication unit 1101 is configured to receive a bearer processing message sent by a serving gateway, and the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the processing unit 1102 is configured to determine an N1 container according to the bearer processing message, the N1 container contains a session management message, and the session management message is used to establish, update, or delete a packet data unit PDU session of the terminal device;
  • the communication unit 1101 is further configured to send a mobility management message to the terminal device, where the mobility management message includes the N1 container.
  • the processing unit 1102 is further configured to determine the type of the session management message contained in the N1 container according to the type of the bearer processing message.
  • the bearer processing message includes 4G service quality parameters
  • the processing unit 1102 is further configured to: convert the 4G service quality parameters into 5G service quality parameters; the mobility sent by the communication unit 1101
  • the N1 container in the management message contains the 5G quality of service parameter.
  • the 4G service quality parameters include the maximum rate of access device name aggregation or bearer quality of service parameters
  • the 5G service quality parameters include the maximum rate of session aggregation or 5G stream quality of service parameters
  • the processing unit 1102 is also configured to : Determine the maximum rate of session aggregation according to the maximum rate of the access device name aggregation; or, determine the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • the processing unit 1102 is further configured to: the quality of service parameter of the 5G stream Contains service quality rules or service quality flow descriptions; according to the type of the bearer processing message and the 4G service quality parameters, the rule operations of the service quality rules or the operation codes of the service quality flow description are determined.
  • the communication unit 1101 is configured to receive a bearer processing message sent by a serving gateway, and the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the processing unit 1102 is configured to determine an N2 container according to the bearer processing message, where the N2 container contains session management parameters; the session management parameters are used to establish, update, or delete a packet data unit PDU session of the terminal device;
  • the communication unit 1101 is further configured to send a mobility management message or a session management message to an access device, where the mobility management message or the session management message includes the N2 container.
  • the processing unit 1102 is further configured to determine the type of the session management parameter contained in the N2 container according to the type of the bearer processing message.
  • the bearer processing message includes 4G service quality parameters
  • the processing unit 1102 is further configured to
  • the 4G service quality parameters are converted into 5G service quality parameters; the mobility sent by the communication unit 1101
  • the N2 container in the management message or the session management message includes the 5G quality of service parameter.
  • the 4G service quality parameters include the maximum rate of access device name aggregation or bearer quality of service parameters
  • the 5G service quality parameters include the maximum rate of session aggregation or 5G stream quality of service parameters
  • the processing unit 1102 is also configured to : Determine the maximum rate of session aggregation according to the maximum rate of the access device name aggregation; or, determine the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .
  • the embodiments of the present application also provide a mobility management device, which is applied to the communication system as shown in FIG. 2a for implementing the session management method shown in the above embodiment.
  • the mobility management device 1200 may include a communication interface 1201 and a processor 1202, and optionally may also include a memory 1203.
  • the processor 1202 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP, or the like.
  • the processor 1202 may further include a hardware chip.
  • the aforementioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.
  • CPLD complex programmable logic device
  • FPGA field-programmable gate array
  • GAL generic array logic
  • the processor 1202 implements the above functions, it may be implemented by hardware, and of course, it may also be implemented by hardware executing corresponding software.
  • the communication interface 1201 and the processor 1202 are connected to each other.
  • the communication interface 1201 and the processor 1202 are connected to each other through a bus 1204;
  • the bus 1204 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard structure (Extended Industry Standard). Architecture, EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 12 to represent it, but it does not mean that there is only one bus or one type of bus.
  • the memory 1203 is coupled with the processor 1202, and is used to store the necessary programs of the SRS transmission device 1200 and the like.
  • the program may include program code, and the program code includes computer operation instructions.
  • the memory 1203 may include RAM, or may also include non-volatile memory, such as at least one disk memory.
  • the processor 1202 executes the application program stored in the memory 1203 to implement the functions of the mobile management device 1200.
  • the communication interface 1201 is used to receive a mobility management message sent by a terminal device.
  • the mobility management message includes an N1 container, and the N1 container includes a session management message; the session management message is used to establish, update, or delete a The packet data unit PDU session of the terminal device;
  • the processor 1202 is configured to convert the session management message into a bearer processing message, and the bearer processing message is used to establish, update, or delete a bearer of the terminal device;
  • the communication interface 1201 is also used to send the bearer processing message to the service gateway.
  • the processing The device 1202 is further configured to select the serving gateway for the terminal according to the PDU session establishment request message and the subscription information of the terminal device.
  • the processor 1202 is further configured to determine the type of the bearer processing message according to the type of the session management message contained in the N1 container.
  • the processor 1202 is further configured to: convert the quality of service parameters of the 5G stream into bearer quality of service parameters;
  • the bearer processing message includes the bearer quality of service parameter.
  • the communication interface 1201 is used to receive a mobility management message or a session management message sent by an access device, the mobility management message or the session management message includes an N2 container, and the N2 container includes session management parameters; the session management The parameters are used to establish, update or delete the packet data unit PDU session of the terminal device;
  • the processor 1202 is configured to convert the session management parameter into a bearer processing message, and the bearer processing message is used to establish, update, or delete a bearer of the terminal device;
  • the communication interface 1201 is also used to send the bearer processing message to the service gateway.
  • the processor 1202 is further configured to determine the type of the bearer processing message according to the type of the session management parameter contained in the N2 container.
  • the processor 1202 is further configured to: convert the 5G stream quality of service parameters into bearer quality of service parameters; the communication interface 1201 sends The bearer processing message includes the bearer quality of service parameter.
  • the communication interface 1201 is used to receive a bearer processing message sent by a service gateway, and the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the processor 1202 is configured to determine an N1 container according to the bearer processing message, the N1 container contains a session management message, and the session management message is used to establish, update, or delete a packet data unit PDU session of the terminal device;
  • the communication interface 1201 is also used to send a mobility management message to the terminal device, where the mobility management message includes the N1 container.
  • the processor 1202 is further configured to determine the type of the session management message contained in the N1 container according to the type of the bearer processing message.
  • the bearer processing message includes 4G service quality parameters
  • the processor 1202 is further configured to: convert the 4G service quality parameters into 5G service quality parameters; the mobility sent by the communication interface 1201
  • the N1 container in the management message contains the 5G quality of service parameter.
  • the 4G quality of service parameters include the maximum rate of access device name aggregation or the bearer quality of service parameters
  • the 5G quality of service parameters include the maximum rate of session aggregation or the quality of service parameters of 5G streams
  • the processor 1202 is further configured to : Determine the maximum rate of session aggregation according to the maximum rate of the access device name aggregation; or, determine the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • the processor 1202 is further configured to: the quality of service parameter of the 5G stream Contains service quality rules or service quality flow descriptions; according to the type of the bearer processing message and the 4G service quality parameters, the rule operations of the service quality rules or the operation codes of the service quality flow description are determined.
  • the communication interface 1201 is used to receive a bearer processing message sent by a service gateway, and the bearer processing message is used to establish, update, or delete a bearer of a terminal device;
  • the processor 1202 is configured to determine an N2 container according to the bearer processing message, where the N2 container contains session management parameters; the session management parameters are used to establish, update, or delete a packet data unit PDU session of the terminal device;
  • the communication interface 1201 is also used to send a mobility management message or a session management message to an access device, where the mobility management message or the session management message includes the N2 container.
  • the processor 1202 is further configured to determine the type of the session management parameter contained in the N2 container according to the type of the bearer processing message.
  • the bearer processing message includes 4G service quality parameters
  • the processor 1202 is further configured to
  • the 4G service quality parameters are converted into 5G service quality parameters; the mobility management sent by the communication interface 1201
  • the N2 container in the management message or the session management message includes the 5G quality of service parameter.
  • the 4G quality of service parameters include the maximum rate of access device name aggregation or the bearer quality of service parameters
  • the 5G quality of service parameters include the maximum rate of session aggregation or the quality of service parameters of 5G streams
  • the processor 1202 is further configured to : Determine the maximum rate of session aggregation according to the maximum rate of the access device name aggregation; or, determine the quality of service parameters of the 5G flow according to the bearer quality of service parameters.
  • using the session management method and device provided in the embodiments of this application can enable 5G terminal equipment and access equipment to access the evolved packet core network without changing the 5G terminal equipment and access equipment.
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

一种会话管理的方法及装置，用以实现终端设备通过5G技术接入4G网络，以保证支持5G终端设备的原生接入。方法为：移动管理设备接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；所述移动管理设备将所述会话管理消息转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；所述移动管理设备向服务网关发送所述承载处理消息。通过上述方法可以实现通过5G技术接入4G网络，以保证支持5G的原生接入。

Description

一种会话管理的方法及装置
本申请要求于2019年9月9日提交中国国家知识产权局、申请号为201910849669.0、发明名称为“一种会话管理的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种会话管理的方法及装置。
背景技术
目前，在第五代(5th generation，5G)网络中，接入网络(access network，AN)通过N2接口接入接入和移动性管理功能(access and mobility management function，AMF)，核心网基于服务化架构(service based architecture，SBA)实现。
5G网络还引入会话管理(session management，SM)和移动性管理(mobility management，MM)解耦的功能，其中MM功能在AMF执行，SM的功能在会话管理功能(session management function，SMF)执行。但是SMF不能和终端设备或接入网络直接通信，需要通过AMF和终端设备的N1接口，以及AMF和接入网络的N2接口通信。为此，AMF需要支持SM相关功能的参数或者消息在终端设备/接入网络和SMF之间透传。
5G网络采用大量新的技术，比如服务化框架，超文本传输协议(hyperText transfer protocol，HTTP)或者传输安全协议(transport layer security，TLS)等，这些技术在移动通信网络内没有应用过，目前还不够成熟。另外，运营商为5G网络需要投资建设新的基础设施，投资成本较大。因此，目前5G网络的应用还比较受限。
发明内容
本申请提供一种会话管理的方法及装置，用以实现终端设备通过5G技术接入4G网络，以保证支持5G终端设备的原生接入。
第一方面，本申请提供了一种会话管理的方法，该方法可以包括：移动管理设备接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述移动管理设备将所述会话管理消息转换为承载处理消息，所述移动管理设备向服务网关发送所述承载处理消息；其中，所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；所述承载处理消息用于建立、更新或删除所述终端设备的承载。
通过上述方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
在一个可能的设计中，当所述N1容器中包含的会话管理消息为PDU会话建立请求消息，所述PDU会话建立请求消息用于为所述终端设备请求建立PDU会话；所述移动管理设备根 据所述PDU会话建立请求消息和所述终端设备的签约信息为所述终端选择所述服务网关。这样可以使所述终端设备通过合适的服务网关准确完成后续操作。
在一个可能的设计中，所述移动管理设备根据所述N1容器中包含的会话管理消息的类型，确定所述承载处理消息的类型。这样可以准确地确定所述承载处理消息的类型。
在一个可能的设计中，所述会话管理消息中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。这样可以准确进行会话管理。
第二方面，本申请提供了一种会话管理的方法，该方法可以包括：移动管理设备接收接入设备发送的移动性管理消息或者会话管理消息，所述移动性管理消息或者会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话；所述移动管理设备将所述会话管理参数转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；所述移动管理设备向服务网关发送所述承载处理消息。
通过上述方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
在一个可能的设计中，所述移动管理设备根据所述N2容器中包含的会话管理参数的类型，确定所述承载处理消息的类型。这样可以准确地确定所述承载处理消息的类型。
在一个可能的设计中，所述会话管理参数中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。这样可以准确进行会话管理。
第三方面，本申请提供了一种会话管理的方法，该方法可以包括：移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；所述移动管理设备根据所述承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；所述移动管理设备向所述终端设备发送移动性管理消息，所述移动性管理消息中包含所述N1容器。
通过上述方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
在一个可能的设计中，所述移动管理设备根据所述承载处理消息的类型，确定所述N1容器中包含的会话管理消息的类型。这样可以准确地确定所述会话管理消息的类型。
在一个可能的设计中，所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数。这样可以准确进行会话管理。
在一个可能的设计中，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数； 所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。这样可以准确地确定相应参数，以使准确进行会话管理。
在一个可能的设计中，所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数时，所述5G流的服务质量参数包含服务质量规则或服务质量流描述；所述移动管理设备根据所述承载处理消息的类型和所述4G服务质量参数，确定所述服务质量规则的规则操作或所述服务质量流描述的操作码。这样可以准确地确定相应参数，以使准确进行会话管理。
第四方面，本申请提供了一种会话管理的方法，该方法可以包括：移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；所述移动管理设备根据所述承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话；所述移动管理设备向接入设备发送移动性管理消息或会话管理消息，所述移动性管理消息或会话管理消息中包含所述N2容器。
通过上述方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
在一个可能的设计中，所述移动管理设备根据所述承载处理消息的类型，确定所述N2容器中包含的会话管理参数的类型。这样可以准确地确定会话管理参数的类型。
在一个可能的设计中，所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；所述移动管理设备发送的所述移动性管理消息或者会话管理消息中的所述N2容器中包含所述5G服务质量参数。这样可以准确进行会话管理。
在一个可能的设计中，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。这样可以准确地确定相应参数，以使准确进行会话管理。
第五方面，本申请还提供了一种移动管理设备，所述移动管理设备具有实现上述第一方面方法实例中移动管理设备的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述移动管理设备的结构中包括处理单元和通信单元，这些单元可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述移动管理设备的结构中包括通信接口和处理器，可选的还可以包括存储器，通信接口用于收发数据(信息或信号等)，以及与通信系统中的其他设备 进行通信交互，处理器被配置为支持移动管理设备执行上述第一方面方法中移动管理设备相应的功能。存储器与处理器耦合，其保存移动管理设备必要的程序指令和数据。
第六方面，本申请还提供了一种移动管理设备，所述移动管理设备具有实现上述第二方面方法实例中移动管理设备的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述移动管理设备的结构中包括处理单元和通信单元，这些单元可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述移动管理设备的结构中包括通信接口和处理器，可选的还可以包括存储器，通信接口用于收发数据(信息或信号等)，以及与通信系统中的其他设备进行通信交互，处理器被配置为支持移动管理设备执行上述第二方面方法中移动管理设备相应的功能。存储器与处理器耦合，其保存移动管理设备必要的程序指令和数据。
第七方面，本申请还提供了一种移动管理设备，所述移动管理设备具有实现上述第三方面方法实例中移动管理设备的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述移动管理设备的结构中包括处理单元和通信单元，这些单元可以执行上述第三方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述移动管理设备的结构中包括通信接口和处理器，可选的还可以包括存储器，通信接口用于收发数据(信息或信号等)，以及与通信系统中的其他设备进行通信交互，处理器被配置为支持移动管理设备执行上述第三方面方法中移动管理设备相应的功能。存储器与处理器耦合，其保存移动管理设备必要的程序指令和数据。
第八方面，本申请还提供了一种移动管理设备，所述移动管理设备具有实现上述第四方面方法实例中移动管理设备的功能。功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中，所述移动管理设备的结构中包括处理单元和通信单元，这些单元可以执行上述第四方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
在一个可能的设计中，所述移动管理设备的结构中包括通信接口和处理器，可选的还可以包括存储器，通信接口用于收发数据(信息或信号等)，以及与通信系统中的其他设备进行通信交互，处理器被配置为支持移动管理设备执行上述第四方面方法中移动管理设备相应的功能。存储器与处理器耦合，其保存移动管理设备必要的程序指令和数据。
第九方面，本申请还提供了一种通信系统，所述通信系统至少包括上述设计中提及的移动管理设备。进一步地，所述通信系统中的所述移动管理设备可以执行上述方法中移动 管理设备执行的任一种方法。
第十方面，本申请提供了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可执行指令，所述计算机可执行指令在被所述计算机调用时用于使所述计算机执行上述第一方面或第一方面的任意一种可能的设计、第二方面或第二方面的任意一种可能的设计中的任一种方法、第三方面或第三方面的任意一种可能的设计中的任一种方法、第四方面或第四方面的任意一种可能的设计中的任一种方法。
第十一方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计、第二方面或第二方面的任意一种可能的设计中的任一种方法、第三方面或第三方面的任意一种可能的设计中的任一种方法、第四方面或第四方面的任意一种可能的设计中的任一种方法。
第十二方面，本申请提供了一种芯片，所述芯片与存储器耦合，用于读取并执行所述存储器中存储的程序指令，以实现上述第一方面或第一方面的任意一种可能的设计、第二方面或第二方面的任意一种可能的设计中的任一种方法、第三方面或第三方面的任意一种可能的设计中的任一种方法、第四方面或第四方面的任意一种可能的设计中的任一种方法。
附图说明
图1为现有技术中的一种5G网络的架构示意图；
图2a为本申请提供的一种通信系统的架构示意图；
图2b为本申请提供的一种4G NSA架构图；
图3为本申请提供的一种会话管理的方法的流程图；
图4为本申请提供的另一种会话管理的方法的流程图；
图5为本申请提供的另一种会话管理的方法的流程图；
图6为本申请提供的另一种会话管理的方法的流程图；
图7为本申请提供的一种会话管理的方法的示例的流程图；
图8为本申请提供的另一种会话管理的方法的示例的流程图；
图9为本申请提供的另一种会话管理的方法的示例的流程图；
图10为本申请提供的另一种会话管理的方法的示例的流程图；
图11为本申请提供的一种移动管理设备的结构示意图；
图12为本申请提供的一种移动管理设备的结构图。
具体实施方式
下面将结合附图对本申请作进一步地详细描述。
本申请实施例提供一种会话管理的方法及装置，用以实现终端设备通过5G技术接入4G网络，以保证支持5G终端设备的原生接入。其中，本申请所述方法和装置基于同一发明构思，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
为了更加清晰地描述本申请实施例的技术方案，下面结合附图，对本申请实施例提供的会话管理的方法及装置进行详细说明。
图1示出了现有技术中的一种5G网络的架构，所述5G网络的架构中包括网络切片选择功能(network slice selection function，NSSF)设备、网络开放功能(network exposure function，NEF)设备、网络功能库功能((network function，NF)repository function，NRF)设备、策略控制功能(policy control function，PCF)设备、统一数据管理(unified data management，UDM)设备、应用功能(application function，AF)设备、鉴权服务器功能(authentication server function，AUSF)设备、核心网接入和移动性管理功能(access and mobility management function，AMF)设备、会话管理功能(session management function，SMF)设备、服务通信代理SCP、终端设备(又称为用户设备(user equipment，UE))、无线接入网(radio access network，RAN)设备、用户面功能(user plane function，UPF)和数据网络(data network，DN)。
在现有的5G网络中终端设备通过N1接口，接入网络通过N2接口接入接入和移动性管理功能设备，核心网基于服务化架构实现。
5G网络还引入会话管理(session management，SM)和移动性管理(mobility management，MM)解耦的功能，其中MM功能在AMF执行，SM的功能在SMF执行。但是SMF不能和终端设备或接入网络直接通信，需要通过AMF和终端设备的N1接口，以及AMF和接入网络的N2接口通信。为此，AMF需要支持SM相关功能的参数或者消息在终端设备/接入网络和SMF之间透传。
由于5G网络采用大量新的技术，比如服务化框架，超文本传输协议(hyperText transfer protocol，HTTP)或者传输安全协议(transport layer security，TLS)等，这些技术在移动通信网络内没有应用过，目前还不够成熟。另外，运营商为5G网络需要投资建设新的基础设施，投资成本较大，这样导致5G网络应用受限。基于此，本申请基于5G网络和第四代(4th generation，4G)网络的兼容出发，提出可以使终端设备和接入网络通过N1或N2接口接入演进的分组核心网络(evolved packet core，EPC)，在重用EPC网络基础设施的情况下，支持5G原生接入。
基于上述描述，本申请提供了一种可能的通信系统的架构，如图2a所示，所述通信系统的架构中可以包括终端设备、接入网络、移动管理设备、服务网关、数据网关和报文数据网络，其中：
终端设备，又可以称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是一种向用户提供语音和/或数据连通性的设备。例如，所述终端设备可以包括具有无线连接功能的手持式设备、车载设备等。目前，所述终端设备可以是：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self-driving)中的无线终端、远程手术(remote medical surgery) 中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端，或智慧家庭(smart home)中的无线终端等。
终端设备通过本地的无线接入网络接入。
移动管理设备负责移动用户设备的位置管理、连接管理、安全认证、网关选择等功能。
服务网关是终端设备的本地接入网关，负责接入技术相关的连接管理和数据转发。
数据网关是终端设备访问外部数据网络的网关。
其中，EPC网络也可以为控制面和用户面分离的网络，即服务网关和数据网关的控制面和用户面分离，分为用户面的服务网关，控制面的服务网关，用户面的数据网关和控制面的数据网关。控制面的服务网关负责接入技术相关的连接管理和数据转发控制，用户面的服务网关负责数据转发。控制面的数据网关负责数据转发控制，用户面的数据网关负责数据转发。其中控制面的服务网关可以和控制面的数据网关合一部署，用户面的服务网关也可以和用户面的数据网关合一部署。
实际中，所述终端设备可以是5G终端；对于演进的通用陆地无线接入网(evolved universal terrestrial radio access network，evolved E-UTRAN)、新无线(new radio，NR)接入网中，接入设备可以为下一代演进型基站(next generation evolved NodeB，ng-eNB)或者5G移动通信系统中的下一代基站(next generation NodeB，gNB)，核心网为EPC网络的网元，移动管理设备可以是移动性管理实体(mobility management entity，MME)，服务网关可以是服务网关(serving gateway，S-GW)，数据网关可以是报文数据网络网关(packet data network gateway，PDN-GW)。针对控制面和用户面分离的网络，服务网关可以是用户面的服务网关(serving gateway user plane，SGW-U)和控制面的服务网关(serving gateway control plane，SGW-C)，数据网关可以是用户面的数据网关(packet data network gateway user plane，PGW-U)和控制面的数据网关(packet data network gateway control plane，PGW-C)。移动管理设备、服务网关可以在现有EPC网络的基础上，进行一定的增强，以支持5G终端设备的原生接入。
需要说明的是，当移动管理设备进行了增强时，移动管理设备可以称为增强移动管理设备。增强移动管理设备的功能，可以支持5G会话管理和移动性管理解耦的功能。
如图2b所示的4G非独立组网架构(non standalone architecture，NSA)中终端设备为4G终端设备，通过4G NAS接入移动管理设备，主接入网络通过4G S1接口接入移动管理设备。终端设备的用户面数据包可以同时通过主接入网络和第二接入网络转发，其中主接入网络是对于E-UTRAN，对应的接入设备为演进型基站(evolved NodeB，eNodeB)，第二接入网络是对于evolved E-UTRAN或者NR接入网，对应的接入设备为ng-eNB或者gNB。通过第二接入网络提供的高带宽使得4G终端设备可以享受媲美5G网络的业务体验。但是NSA架构需要部署主接入网络和第二接入网络，适用于局部热点部署，全网部署代价高。因此，采用本申请提供的图2a所示的网络可以避免上述问题，灵活实现通过5G技术接入4G网络。
需要说明的是，图2a、图2b所示的通信系统(或网络)的架构中不限于仅包含图中所示的设备，还可以包含其它未在图中表示的设备，具体本申请在此处不再一一列举。
本申请实施例提供的一种会话管理的方法，适用于如图2a所示的通信系统。参阅图3所示，该方法的具体流程可以包括：
步骤301、移动管理设备接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元(packet data unit，PDU)会话。
在此实施例中，所述移动管理设备为对现有的移动管理设备进行了增强的增强移动管理设备。
示例性的，所述终端设备通过接入设备向所述移动管理设备发送所述移动性管理消息，所述终端设备向所述接入设备发送所述移动性管理消息，然后所述接入设备将所述移动性管理消息转发给所述移动管理设备。
其中，所述移动管理设备可以通过5G NAS协议接收所述终端设备发送的所述移动性管理消息。
一种可选的实施例中，所述N1容器可以为净荷容器(payload container)。
一种具体的实施方式中，所述移动性管理消息可以为上行非接入层(non-access stratum,NAS)传输消息，所述会话管理消息可以为PDU会话建立请求消息。
在一种示例性的方式中，当所述N1容器中包含的会话管理消息为PDU会话建立请求消息，所述PDU会话建立请求消息用于为所述终端设备请求建立PDU会话；所述移动管理设备根据所述PDU会话建立请求消息和所述终端设备的签约信息为所述终端选择所述服务网关。其中，所述为所述终端设备请求建立PDU会话是为所述终端设备请求建立第一个PDU会话。后续为所述终端设备请求建立PDU会话时，所述移动管理设备无需再选择所述服务网关。
步骤302、所述移动管理设备将所述会话管理消息转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载。
在一种可选的实施方式中，所述移动管理设备根据所述N1容器中包含的会话管理消息的类型，确定所述承载处理消息的类型。
一种示例中，所述会话管理消息中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。其中，所述5G流的服务质量参数为5G服务质量(quality of service，QoS)参数，所述服务质量参数为4G承载QoS参数。
步骤303、所述移动管理设备向服务网关发送所述承载处理消息。
在一种可选的实施方式中，所述承载处理消息可以为隧道协议(GPRS tunneling protocol，GTP)消息。
具体的，所述移动管理设备通过控制面隧道端点协议GTP-C向所述服务网关发送所述承载处理消息。
一种具体的实施方式中，在步骤303之后，所述服务网关将所述承载处理消息转发给数据网关。
采用本申请实施例提供的会话管理的方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性 管理解耦的功能，确保终端设备支持5G原生接入。
本申请实施例提供的另一种会话管理的方法，适用于如图2a所示的通信系统。参阅图4所示，该方法的具体流程可以包括：
步骤401、移动管理设备接收接入设备发送的移动性管理消息或者会话管理消息，所述移动性管理消息或者会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话。
在此实施例中，所述移动管理设备为对现有的移动管理设备进行了增强的增强移动管理设备。
具体的，所述移动管理设备通过下一代应用层协议(NG application protocol，NGAP)接收所述接入设备发送的移动性管理消息或者会话管理消息。
示例性的，所述移动性管理消息为初始上下文响应消息，所述会话管理参数为PDU会话资源建立响应转换信元；或者，所述会话管理消息为PDU会话资源更新响应消息，所述会话管理参数为PDU会话资源更新响应转换信元。
步骤402、所述移动管理设备将所述会话管理参数转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载。
在一种可选的实施方式中，所述移动管理设备根据所述N2容器中包含的会话管理参数的类型，确定所述承载处理消息的类型。
一种示例中，所述会话管理参数中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。其中，所述5G流的服务质量参数为5G服务质量(quality of service，QoS)参数，所述服务质量参数为4G承载QoS参数。
步骤403、所述移动管理设备向服务网关发送所述承载处理消息。
在一种可选的实施方式中，所述承载处理消息可以为隧道协议(GPRS tunneling protocol，GTP)消息。
具体的，所述移动管理设备通过GTP-C协议向所述服务网关发送所述承载处理消息。
一种具体的实施方式中，在步骤403之后，所述服务网关将所述承载处理消息转发给数据网关。
采用本申请实施例提供的会话管理的方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
本申请实施例提供的另一种会话管理的方法，适用于如图2a所示的通信系统。参阅图5所示，该方法的具体流程可以包括：
步骤501、移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载。
在此实施例中，所述移动管理设备为对现有的移动管理设备进行了增强的增强移动管理设备。
示例性的，所述移动管理设备可以通过GTP-C协议接收服务网关发送的承载处理消息。
具体的，在步骤501之前，所述服务网关先接收数据网关发送的所述承载处理消息。
步骤502、所述移动管理设备根据所述承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的PDU会话。
在一种可选的实施方式中，所述移动管理设备根据所述承载处理消息的类型，确定所述N1容器中包含的会话管理消息的类型。
步骤503、所述移动管理设备向所述终端设备发送移动性管理消息，所述移动性管理消息中包含所述N1容器。
具体的，所述移动管理设备可以通过5G NAS协议向所述终端设备发送所述移动性管理消息。
其中，所述移动管理设备向所述终端设备发送移动性管理消息时，所述移动管理设备先向接入设备发送所述移动性管理消息，然后所述接入设备向所述终端设备发送所述移动性管理消息。
在一种示例性的实施方式中，所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数。
具体的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。
在一种可选的实施方式中，所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数时，所述5G流的服务质量参数包含服务质量规则或服务质量流描述；所述移动管理设备根据所述承载处理消息的类型和所述4G服务质量参数，确定所述服务质量规则的规则操作或所述服务质量流描述的操作码。
一种示例，所述N1容器中的会话管理消息为PDU会话更新请求消息，所述移动性管理消息为下行NAS传输消息。
采用本申请实施例提供的会话管理的方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
本申请实施例提供的另一种会话管理的方法，适用于如图2a所示的通信系统。参阅图6所示，该方法的具体流程可以包括：
步骤601、移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载。
在此实施例中，所述移动管理设备为对现有的移动管理设备进行了增强的增强移动管理设备。
示例性的，所述移动管理设备可以通过GTP-C协议接收服务网关发送的承载处理消息。
具体的，在步骤601之前，所述服务网关先接收数据网关发送的所述承载处理消息。
步骤602、所述移动管理设备根据所述承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话。
在一种可选的实施方式中，所述移动管理设备根据所述承载处理消息的类型，确定所述N2容器中包含的会话管理参数的类型。
步骤603、所述移动管理设备向接入设备发送移动性管理消息或会话管理消息，所述移动性管理消息或会话管理消息中包含所述N2容器。
具体的，所述移动管理设备可以通过NGAP协议向所述接入设备发送移动性管理消息或会话管理消息。
在一种可选的实施方式中，所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；所述移动管理设备发送的所述移动性管理消息或者会话管理消息中的所述N2容器中包含所述5G服务质量参数。
示例性的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。
一种示例中，所述会话管理消息可以为PDU会话资源更新请求消息，所述N2容器为PDU会话资源更新请求转换类型。
采用本申请实施例提供的会话管理的方法，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
基于以上实施例，本申请实施例提供了一种会话管理的方法的示例，在该示例中，移动管理设备以增强移动管理设备示出。参阅图7所示，该示例的具体流程可以包括：
步骤701、终端设备向增强移动管理网元发送第一移动性管理消息。所述第一移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的PDU会话。
其中，所述第一移动性管理消息为图3所示的实施例中涉及的移动性管理消息。
具体的，所述终端设备先向接入设备发送所述第一移动性管理消息，然后所述接入设备向所述增强移动管理设备转发所述第一移动性管理消息。
步骤702、所述增强移动管理设备将所述会话管理消息转换为第一承载处理消息，所述第一承载处理消息用于建立、更新或删除所述终端设备的承载。
其中，所述第一承载处理消息为图3所示的实施例中涉及的承载处理消息。
步骤703、所述增强移动管理设备向服务网关发送所述第一承载处理消息。
步骤704、所述服务网关向数据网关发送所述第一承载处理消息。
步骤705、所述数据网关向所述服务网关发送第二承载处理消息，所述第二承载处理消息用于建立、更新或删除终端设备的承载。
其中，所述第二承载处理消息为图5所示的实施例中涉及的承载处理消息。
步骤706、所述服务网关向所述增强移动管理设备发送所述第二承载处理消息。
步骤707、所述增强移动管理设备根据所述第二承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的PDU会话。
步骤708、所述增强移动管理设备向所述终端设备发送第二移动性管理消息，所述第二移动性管理消息中包含所述N1容器。
其中，所述第二移动性管理消息为图5所示的实施例中涉及的移动性管理消息。
具体的，所述增强移动管理设备先向所述接入设备发送所述第二移动性管理消息，然后所述接入设备再向所述终端设备发送第二移动性管理消息。
基于以上实施例，本申请实施例还提供了另一种会话管理的方法的示例，在该示例中，移动管理设备以增强移动管理设备示出。参阅图8所示，该示例的具体流程可以包括：
步骤801、接入设备向增强移动管理设备发送第一移动性管理消息或者第一会话管理消息，所述第一移动性管理消息或者第一会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话。
其中，所述第一移动性管理消息或者第一会话管理消息为图4所示的实施例中涉及的移动性管理消息或者会话管理消息。
步骤802、所述增强移动管理设备将所述会话管理参数转换为第一承载处理消息，所述第一承载处理消息用于建立、更新或删除所述终端设备的承载。
其中，所述第一承载处理消息为图4所示的实施例中涉及的承载处理消息。
步骤803、所述增强移动管理设备向服务网关发送所述第一承载处理消息。
步骤804、所述服务网关向数据网关发送所述第一承载处理消息。
步骤805、所述数据网关向所述服务网关发送第二承载处理消息，所述第二承载处理消息用于建立、更新或删除终端设备的承载。
其中，所述第二承载处理消息为图6所示的实施例中涉及的承载处理消息。
步骤806、所述服务网关向所述增强移动管理设备发送所述第二承载处理消息。
步骤807、所述增强移动管理设备根据所述第二承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话。
步骤808、所述增强移动管理设备向接入设备发送第二移动性管理消息或第二会话管理消息，所述第二移动性管理消息或第二会话管理消息中包含所述N2容器。
其中，所述第二移动性管理消息或者第二会话管理消息为图6所示的实施例中涉及的移动性管理消息或者会话管理消息。
基于以上实施例，本申请实施例提供了一种会话管理的方法的示例，在该示例中，移动管理设备以增强移动管理设备示出。该示例示出了PDU会话建立流程中的会话管理的具体过程。参阅图9所示，该示例的具体流程可以包括：
步骤901：终端设备向增强移动管理设备发送上行NAS传输消息，所述上行NAS传输消息中包含N1容器，所述N1容器中包含会话管理消息，所述会话管理消息为PDU会话建立 请求消息。
其中，当所述终端设备有业务需要进行时，发起PDU会话建立流程，请求建立所述业务对应的PDU会话，从而执行步骤901。
在一种可选的实施方式中，所述上行NAS传输消息中还包含N1容器类型。
具体的，所述终端设备先向接入设备发送所述上行NAS传输消息，然后所述接入设备再向所述增强移动管理设备转发所述上行NAS传输消息。
步骤902、所述增强移动管理设备解析所述N1容器，获得所述N1容器包含的会话管理消息，也即所述PDU会话建立请求消息。
具体的，所述增强移动管理设备根据所述N1容器的类型确定N1容器中携带的是N1会话管理信息，则所述增强移动管理网元解析所述N1容器中包含的会话管理消息，即PDU会话建立请求消息。
步骤903、所述增强移动管理网元向服务网关发送建立会话请求消息。
其中，所述建立会话请求消息为GTP消息。
具体的，所述建立会话请求消息中包含从所述N1容器中获得的信息，如分组数据网络类型(packet data network type，PDN Type)，扩展协议配置选项(extended protocol configuration options，ePCO)等。
步骤904、所述服务网关向数据网关发送所述建立会话请求消息，用于请求数据网关建立对应的PDN连接。
步骤905、所述数据网关和策略和计费规则功能实体之间建立所述PDN连接的连接接入网络(Internet Protocol-Connectivity Access Network，IP-CAN)会话，用以获取对应的计费和服务质量等策略。
步骤906、所述数据网关向所述服务网关发送建立会话响应消息，所述建立会话响应消息中包含承载服务质量参数，聚合最大速率(aggregate maximum bit rate，APN-AMBR)等信息。
步骤907、所述服务网关向所述增强移动管理设备发送建立会话响应消息，建立会话响应消息中包含承载服务质量参数，接入设备名称聚合最大速率等信息。
步骤908、所述增强移动管理设备确定N1容器和N2容器，所述N1容器包含PDU会话建立响应消息，PDU会话建立响应消息中可以包含5G QoS流的服务质量参数1(5G服务质量规则和QoS流描述)会话聚合最大速率或映射的承载上下文。所述N2容器可以包含PDU会话资源建立请求转换信息，其中PDU会话资源建立请求转换信息可以包含会话聚合最大速率，5G QoS流的服务质量参数2。
具体的，所述增强移动管理设备根据所述接入设备名称聚合最大速率确定会话聚合最大速率。例如，所述增强移动管理设备可以根据本地策略，直接将接入设备名称聚合最大速率确定为会话聚合最大速率，又例如，会话聚合最大速率可以为接入设备名称聚合最大速率的一半等等。
所述增强移动管理设备将承载服务质量参数映射为5G QoS流的服务质量参数2。例如：所述增强移动管理设备将QoS分类标识(QoS class identifier，QCI)映射为5G服务质量标识(5G QoS Identifier，5QI)，如将QCI＝1，映射为5QI＝1；获取本地配置的非动态 5QI或者动态5QI相关的参数；将承载的带宽映射为QoS流的带宽；获取本地配置的最大丢包率等参数。
所述增强移动管理设备将承载服务质量参数映射为5G QoS流的服务质量参数1，即包含5G服务质量规则和QoS流描述，例如：所述增强移动管理设备分配服务质量规则标识；设置缺省或者非缺省标志，增强移动管理设备可以将PDU会话建立过程中建立的服务质量规则设置缺省标志；确定规则操作，如在本流程中，将规则操作设置为建立新的服务质量规则；确定QoS流描述操作码，如在本流程中，将操作码设置为建立新的QoS流描述。
所述增强移动管理设备根据承载服务质量参数确定映射的承载上下文。
步骤909、所述增强移动管理设备向接入设备发送PDU会话资源建立请求消息，所述PDU会话资源建立请求消息中包含发送给终端设备的下行NAS传输消息，其中下行NAS传输消息中包含N1容器和N1容器的类型，N1容器的类型可以设置为N1会话管理信息，所述N1会话管理信息为PDU会话建立接受消息。所述PDU会话资源建立请求消息中还包含N2容器，所述N2容器包含PDU会话资源建立请求转换信息。
步骤910、所述接入设备向所述终端设备发送所述下行NAS传输消息。
步骤911、所述接入设备向所述增强移动管理设备发送PDU会话资源建立响应消息，所述PDU会话资源建立响应消息中包含N2容器，所述N2容器中包含PDU会话资源建立响应转换信息。所述PDU会话资源建立响应转换信息中包含接入设备用户面转发信息。
步骤912、所述增强移动管理设备解析所述N2容器，获得接入设备用户面转发信息。
步骤913、所述增强移动管理设备向所述服务网关发送更新承载请求消息，所述更新承载请求消息中包含所述接入设备用户面转发信息。
步骤914、所述服务网关向所述增强移动管理设备发送更新承载响应消息，指示PDU会话建立成功。
基于以上实施例，本申请实施例提供了一种会话管理的方法的示例，在该示例中，移动管理设备以增强移动管理设备示出。该示例示出了PDU会话更新流程中的会话管理的具体过程。参阅图10所示，该示例的具体流程可以包括：
步骤1001、策略和计费规则功能实体向数据网关发送IP-CAN会话更新请求，用于更新服务质量策略等信息。
步骤1002、所述数据网关向服务网关发送承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载。所述承载处理消息中包含承载服务质量参数，接入设备名称聚合最大速率等信息。其中，所述承载处理消息可以为建立承载请求消息、更新承载请求消息或者删除承载请求消息等等。
步骤1003、所述服务网关向增强移动管理设备发送所述承载处理消息，所述承载处理消息中包含承载服务质量参数，接入点名称聚合最大速率等信息。
步骤1004、所述增强移动管理设备确定N1容器和N2容器，所述N1容器包含PDU会话更新请求消息，PDU会话更新请求消息中可以包含5G QoS流的服务质量参数1(5G服务质量规则和QoS流描述)，会话聚合最大速率或映射的承载上下文。所述N2容器可以包含PDU会话资源更新请求转换信息，其中PDU会话资源更新请求转换信息包含上述会话聚合最大 速率，5G QoS流的服务质量参数2。
具体的，所述增强移动管理设备根据所述接入设备名称聚合最大速率确定会话聚合最大速率。例如，所述增强移动管理设备可以根据本地策略，直接将接入点名称聚合最大速率确定为会话聚合最大速率；又例如，会话聚合最大速率可以为接入点名称聚合最大速率的一半等。
所述增强移动管理设备将承载服务质量参数映射为5G QoS流的服务质量参数2，例如：所述增强移动管理设备将QCI映射为5QI，如将QCI＝1，映射为5QI＝1；获取本地配置的非动态5QI或者动态5QI相关的参数；将承载的带宽映射为QoS流的带宽；获取本地配置的最大丢包率等参数。
所述增强移动管理设备将承载服务质量参数映射为5G QoS流的服务质量参数1，即5G服务质量规则和QoS流描述，例如：所述增强移动管理设备分配服务质量规则标识；确定规则操作，根据所述承载处理消息及其包含的承载服务质量参数，确定规则操作为建立新的规则，删除现有的规则，更新现有的规则和数据包过滤器，更新现有的规则并替换数据包过滤器，更新现有的规则并删除数据包过滤器，更新现有的规则不更新数据包过滤器；确定QoS流描述操作码，根据所述承载处理消息及其包含的承载服务质量参数，确定操作码为建立新的QoS流描述，删除现有的QoS流描述，更新现有的QoS流描述。例如，如果收到建立承载消息，则操作码为建立新的QoS流描述，如果收到更新承载请求消息，则操作码为更新现有的QoS流描述，如果收到删除承载请求消息，则操作码为删除现有的QoS流描述。
所述增强移动管理设备根据承载处理消息及其包含的承载服务质量参数确定映射的承载上下文。
步骤1005、所述增强移动管理设备向接入设备发送PDU会话资源更新请求消息，所述PDU会话资源更新请求消息中包含发送给终端设备的下行NAS传输消息，其中所述下行NAS传输消息中包含N1容器和N1容器的类型，N1容器的类型设置为N1会话管理信息，所述N1会话管理信息包含PDU会话更新要求消息。所述PDU会话资源更新请求消息中还包含N2容器，所述N2容器包含PDU会话资源更新请求转换信息。
步骤1006、所述接入设备向所述终端设备发送所述下行NAS传输消息。
步骤1007、所述终端设备向所述增强移动管理设备发送上行NAS传输消息，所述上行NAS传输消息中包含N1容器和N1容器的类型，所述N1容器包含PDU会话更新完成消息。
具体的，所述终端设备先向所述接入设备发送所述上行NAS传输消息，然后所述接入设备向所述增强移动管理设备转发所述上行NAS传输消息。
步骤1008、所述接入设备向增强移动管理设备发送PDU会话资源更新响应消息，所述PDU会话资源更新响应消息中包含N2容器，所述N2容器中包含PDU会话资源更新响应转换信息。
步骤1009、所述增强移动管理设备解析所述N1容器和N2容器，获知终端设备和接入设备成功更新PDU会话。
步骤1010、所述增强移动管理设备发送向所述服务网关发送承载处理响应消息，承载处理响应消息用于通知所述终端设备的承载建立、更新或删除成功。
示例性的，所述承载处理响应消息可以为建立承载响应消息、更新承载响应消息或者删除承载响应消息等。
步骤1011、所述服务网关向所述数据网关发送所述承载处理响应消息，指示所述承载建立、更新或删除成功。
步骤1012、所述数据网关向所述策略和计费规则功能实体发送IP-CAN会话更新响应消息。
需要说明的是增强移动管理设备需要根据收到的GTP消息及其承载的服务质量参数确定发送给终端设备或者接入设备的消息类型，如收到建立、更新或删除承载消息，则发送给终端设备会话管理消息为PDU会话更新要求消息，发送给接入设备的为PDU会话资源更新请求消息。反之，增强移动管理设备需要根据接收到的终端设备发送的会话管理消息及其携带的5G服务质量规则或QoS流描述确定GTP消息，如终端设备发送PDU会话更新请求消息，其中5G服务质量规则中的规则操作为删除现有的规则或者QoS流描述中的操作码为删除现有的QoS流描述，则增强移动管理设备发送删除承载要求给服务网关，又如终端设备发送PDU会话更新请求消息，其中5G服务质量规则中的规则操作为更新现有的规则不更新数据包过滤器或者QoS流描述中的操作码为更新现有的QoS流描述，则增强移动管理设备发送更新承载要求给服务网关。
需要说明的是，图9和图10所示的示例只是列举了PDU会话建立和承载建立、更新或删除流程，事实上在其他流程如服务请求，注册流程，切换流程等流程中，增强移动管理设备也需要执行如上述示例中的SM和MM解耦的操作，本申请不再一一列举。
需要说明的是，图9和图10所示的示例中只是列举了承载服务质量参数映射为5G服务质量参数，事实上增强移动管理设备也需要支持反向的映射，如在终端设备发起PDU会话更新流程时，根据5G服务质量参数确定承载服务质量参数。
基于以上实施例，本申请实施例还提供了一种移动管理设备，该移动管理设备应用于如图2a所示的通信系统，用于实现上述实施例所示的会话管理的方法。参阅图11所示，该移动管理设备1100包括：通信单元1101和处理单元1102。
在一个实施例中，所述移动管理设备1100用于实现图3所示的会话管理的方法时：
所述通信单元1101用于接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述处理单元1102用于将所述会话管理消息转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
所述通信单元1101还用于向服务网关发送所述承载处理消息。
在一种可选的实施方式中，当所述N1容器中包含的会话管理消息为PDU会话建立请求消息，所述PDU会话建立请求消息用于为所述终端设备请求建立PDU会话；所述处理单元1102还用于根据所述PDU会话建立请求消息和所述终端设备的签约信息为所述终端选择所述服务网关。
示例性的，所述处理单元1102还用于根据所述N1容器中包含的会话管理消息的类型， 确定所述承载处理消息的类型。
具体的，所述会话管理消息中包含5G流的服务质量参数时，所述处理单元1102还用于：将所述5G流的服务质量参数转换为承载服务质量参数；所述通信单元1101发送的所述承载处理消息中包含所述承载服务质量参数。
在另一个实施例中，所述移动管理设备1100用于实现图4所示的会话管理的方法时：
所述通信单元1101用于接收接入设备发送的移动性管理消息或者会话管理消息，所述移动性管理消息或者会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话；
所述处理单元1102用于将所述会话管理参数转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
所述通信单元1101还用于向服务网关发送所述承载处理消息。
在一种可选的实施方式中，所述处理单元1102还用于根据所述N2容器中包含的会话管理参数的类型，确定所述承载处理消息的类型。
示例性的，所述会话管理参数中包含5G流的服务质量参数时，所述处理单元1102还用于：将所述5G流的服务质量参数转换为承载服务质量参数；所述通信单元1101发送的所述承载处理消息中包含所述承载服务质量参数。
在另一个实施例中，所述移动管理设备1100用于实现图5所示的会话管理的方法时：
所述通信单元1101用于接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
所述处理单元1102用于根据所述承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述通信单元1101还用于向所述终端设备发送移动性管理消息，所述移动性管理消息中包含所述N1容器。
在一种可选的实施方式中，所述处理单元1102还用于根据所述承载处理消息的类型，确定所述N1容器中包含的会话管理消息的类型。
示例性的，所述承载处理消息中包含4G服务质量参数，所述处理单元1102还用于：将所述4G服务质量参数转换为5G服务质量参数；所述通信单元1101发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数。
具体的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述处理单元1102还用于：根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，根据承载服务质量参数确定所述5G流的服务质量参数。
可选的，所述通信单元1101发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数时，所述处理单元1102还用于：所述5G流的服务质量参数包含服务质量规则或服务质量流描述；根据所述承载处理消息的类型和所述4G服务质量参数，确定所述服务质量规则的规则操作或所述服务质量流描述的操作码。
在另一个实施例中，所述移动管理设备1100用于实现图6所示的会话管理的方法时：
所述通信单元1101用于接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
所述处理单元1102用于根据所述承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述通信单元1101还用于向接入设备发送移动性管理消息或会话管理消息，所述移动性管理消息或会话管理消息中包含所述N2容器。
在一种可选的实施方式中，所述处理单元1102还用于根据所述承载处理消息的类型，确定所述N2容器中包含的会话管理参数的类型。
示例性的，所述承载处理消息中包含4G服务质量参数，所述处理单元1102还用于将
所述4G服务质量参数转换为5G服务质量参数；所述通信单元1101发送的所述移动性
管理消息或者会话管理消息中的所述N2容器中包含所述5G服务质量参数。
具体的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述处理单元1102还用于：根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，根据承载服务质量参数确定所述5G流的服务质量参数。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。在本申请的实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例，本申请实施例还提供了一种移动管理设备，所述移动管理设备应用于如图2a所示的通信系统，用于实现上述实施例所示的会话管理的方法。参阅图12所示，所述移动管理设备1200可以包括：通信接口1201和处理器1202，可选的还可以包括存储器1203。其中，所述处理器1202可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合等等。所述处理器1202还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其 组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)或其任意组合。所述处理器1202在实现上述功能时，可以通过硬件实现，当然也可以通过硬件执行相应的软件实现。
所述通信接口1201和所述处理器1202之间相互连接。可选的，所述通信接口1201和所述处理器1202通过总线1204相互连接；所述总线1204可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示，图12中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
所述存储器1203，与所述处理器1202耦合，用于存放所述SRS的传输装置1200必要的程序等。例如，程序可以包括程序代码，该程序代码包括计算机操作指令。所述存储器1203可能包括RAM，也可能还包括非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。所述处理器1202执行所述存储器1203所存放的应用程序，实现所述移动管理设备1200的功能。
在一个实施例中，所述移动管理设备1200用于实现图3所示的会话管理的方法时：
所述通信接口1201用于接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述处理器1202用于将所述会话管理消息转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
所述通信接口1201还用于向服务网关发送所述承载处理消息。
在一种可选的实施方式中，当所述N1容器中包含的会话管理消息为PDU会话建立请求消息，所述PDU会话建立请求消息用于为所述终端设备请求建立PDU会话；所述处理器1202还用于根据所述PDU会话建立请求消息和所述终端设备的签约信息为所述终端选择所述服务网关。
示例性的，所述处理器1202还用于根据所述N1容器中包含的会话管理消息的类型，确定所述承载处理消息的类型。
具体的，所述会话管理消息中包含5G流的服务质量参数时，所述处理器1202还用于：将所述5G流的服务质量参数转换为承载服务质量参数；所述通信接口1201发送的所述承载处理消息中包含所述承载服务质量参数。
在另一个实施例中，所述移动管理设备1200用于实现图4所示的会话管理的方法时：
所述通信接口1201用于接收接入设备发送的移动性管理消息或者会话管理消息，所述移动性管理消息或者会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话；
所述处理器1202用于将所述会话管理参数转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
所述通信接口1201还用于向服务网关发送所述承载处理消息。
在一种可选的实施方式中，所述处理器1202还用于根据所述N2容器中包含的会话管理参数的类型，确定所述承载处理消息的类型。
示例性的，所述会话管理参数中包含5G流的服务质量参数时，所述处理器1202还用于：将所述5G流的服务质量参数转换为承载服务质量参数；所述通信接口1201发送的所述承载处理消息中包含所述承载服务质量参数。
在另一个实施例中，所述移动管理设备1200用于实现图5所示的会话管理的方法时：
所述通信接口1201用于接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
所述处理器1202用于根据所述承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述通信接口1201还用于向所述终端设备发送移动性管理消息，所述移动性管理消息中包含所述N1容器。
在一种可选的实施方式中，所述处理器1202还用于根据所述承载处理消息的类型，确定所述N1容器中包含的会话管理消息的类型。
示例性的，所述承载处理消息中包含4G服务质量参数，所述处理器1202还用于：将所述4G服务质量参数转换为5G服务质量参数；所述通信接口1201发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数。
具体的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述处理器1202还用于：根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，根据承载服务质量参数确定所述5G流的服务质量参数。
可选的，所述通信接口1201发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数时，所述处理器1202还用于：所述5G流的服务质量参数包含服务质量规则或服务质量流描述；根据所述承载处理消息的类型和所述4G服务质量参数，确定所述服务质量规则的规则操作或所述服务质量流描述的操作码。
在另一个实施例中，所述移动管理设备1200用于实现图6所示的会话管理的方法时：
所述通信接口1201用于接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
所述处理器1202用于根据所述承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
所述通信接口1201还用于向接入设备发送移动性管理消息或会话管理消息，所述移动性管理消息或会话管理消息中包含所述N2容器。
在一种可选的实施方式中，所述处理器1202还用于根据所述承载处理消息的类型，确定所述N2容器中包含的会话管理参数的类型。
示例性的，所述承载处理消息中包含4G服务质量参数，所述处理器1202还用于将所
述4G服务质量参数转换为5G服务质量参数；所述通信接口1201发送的所述移动性管
理消息或者会话管理消息中的所述N2容器中包含所述5G服务质量参数。
具体的，所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；所述处理器1202还用于：根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者，根据承载服务质量参数确定所述5G流的服务质量参数。
综上所述，采用本申请实施例提供的会话管理的方法及装置，可以使得5G终端设备和接入设备接入演进的分组核心网络时，不需要改变5G终端设备和接入设备，即可支持5G会话管理和移动性管理解耦的功能，确保终端设备支持5G终端设备的原生接入。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (18)

  1. 一种会话管理的方法，其特征在于，包括：
    移动管理设备接收终端设备发送的移动性管理消息，所述移动性管理消息中包含N1容器，所述N1容器包含会话管理消息；所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
    所述移动管理设备将所述会话管理消息转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
    所述移动管理设备向服务网关发送所述承载处理消息。
  2. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    当所述N1容器中包含的会话管理消息为PDU会话建立请求消息，所述PDU会话建立请求消息用于为所述终端设备请求建立PDU会话；
    所述移动管理设备根据所述PDU会话建立请求消息和所述终端设备的签约信息为所述终端选择所述服务网关。
  3. 如权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述移动管理设备根据所述N1容器中包含的会话管理消息的类型，确定所述承载处理消息的类型。
  4. 如权利要求1至3任一项所述的方法，其特征在于，所述方法还包括：
    所述会话管理消息中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；
    所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。
  5. 一种会话管理的方法，其特征在于，包括：
    移动管理设备接收接入设备发送的移动性管理消息或者会话管理消息，所述移动性管理消息或者会话管理消息中包含N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除终端设备的分组数据单元PDU会话；
    所述移动管理设备将所述会话管理参数转换为承载处理消息，所述承载处理消息用于建立、更新或删除所述终端设备的承载；
    所述移动管理设备向服务网关发送所述承载处理消息。
  6. 如权利要求5所述的方法，其特征在于，所述方法还包括：
    所述移动管理设备根据所述N2容器中包含的会话管理参数的类型，确定所述承载处理消息的类型。
  7. 如权利要求5或6所述的方法，其特征在于，所述方法还包括：
    所述会话管理参数中包含5G流的服务质量参数，所述移动管理设备将所述5G流的服务质量参数转换为承载服务质量参数；
    所述移动管理设备发送的所述承载处理消息中包含所述承载服务质量参数。
  8. 一种会话管理的方法，其特征在于，包括：
    移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
    所述移动管理设备根据所述承载处理消息确定N1容器，所述N1容器包含会话管理消息，所述会话管理消息用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
    所述移动管理设备向所述终端设备发送移动性管理消息，所述移动性管理消息中包含所述N1容器。
  9. 如权利要求8所述的方法，其特征在于，所述方法还包括：
    所述移动管理设备根据所述承载处理消息的类型，确定所述N1容器中包含的会话管理消息的类型。
  10. 如权利要求8或9所述的方法，其特征在于，所述方法还包括：
    所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；
    所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数。
  11. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；
    所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；
    所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者
    所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。
  12. 如权利要求11所述的方法，其特征在于，所述移动管理设备发送的所述移动性管理消息中的所述N1容器中包含所述5G服务质量参数时，所述方法还包括：
    所述5G流的服务质量参数包含服务质量规则或服务质量流描述；
    所述移动管理设备根据所述承载处理消息的类型和所述4G服务质量参数，确定所述服务质量规则的规则操作或所述服务质量流描述的操作码。
  13. 一种会话管理的方法，其特征在于，包括：
    移动管理设备接收服务网关发送的承载处理消息，所述承载处理消息用于建立、更新或删除终端设备的承载；
    所述移动管理设备根据所述承载处理消息确定N2容器，所述N2容器包含会话管理参数；所述会话管理参数用于建立、更新或删除所述终端设备的分组数据单元PDU会话；
    所述移动管理设备向接入设备发送移动性管理消息或会话管理消息，所述移动性管理消息或会话管理消息中包含所述N2容器。
  14. 如权利要求13所述的方法，其特征在于，所述方法还包括：
    所述移动管理设备根据所述承载处理消息的类型，确定所述N2容器中包含的会话管理参数的类型。
  15. 如权利要求13或14所述的方法，其特征在于，所述方法还包括：
    所述承载处理消息中包含4G服务质量参数，所述移动管理设备将所述4G服务质量参数转换为5G服务质量参数；
    所述移动管理设备发送的所述移动性管理消息或者会话管理消息中的所述N2容器中包含所述5G服务质量参数。
  16. 如权利要求15所述的方法，其特征在于，所述方法还包括：
    所述4G服务质量参数包含接入设备名称聚合最大速率或者承载服务质量参数；
    所述5G服务质量参数包含会话聚合最大速率或者5G流的服务质量参数；
    所述移动管理设备根据所述接入设备名称聚合最大速率确定所述会话聚合最大速率；或者
    所述移动管理设备根据承载服务质量参数确定所述5G流的服务质量参数。
  17. 一种移动管理设备，其特征在于，包括：
    处理器和存储器，所述处理器和所述存储器耦合连接；
    所述存储器中存储程序代码，当所述处理器读取所述存储器中存储的程序代码并执行所述程序代码时，所述移动管理设备执行如权利要求1-16任一项所述的方法。
  18. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机可执行指令，所述计算机可执行指令在被所述计算机调用时用于使所述计算机执行上述权利要求1-16中任一项所述的方法。
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