WO2018000319A1 - 一种用户终端的附着方法及设备 - Google Patents

一种用户终端的附着方法及设备 Download PDF

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Publication number
WO2018000319A1
WO2018000319A1 PCT/CN2016/087883 CN2016087883W WO2018000319A1 WO 2018000319 A1 WO2018000319 A1 WO 2018000319A1 CN 2016087883 W CN2016087883 W CN 2016087883W WO 2018000319 A1 WO2018000319 A1 WO 2018000319A1
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WIPO (PCT)
Prior art keywords
session
identifier
information
network registration
message
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PCT/CN2016/087883
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English (en)
French (fr)
Inventor
黄正磊
杨艳梅
应江威
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华为技术有限公司
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Priority to PCT/CN2016/087883 priority Critical patent/WO2018000319A1/zh
Publication of WO2018000319A1 publication Critical patent/WO2018000319A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for attaching a user terminal.
  • the attach process is a necessary process for the user equipment (UE) to register in the network before the service is performed.
  • the UE can receive the service from the network only after the attachment is completed.
  • the implementation of the UE attach procedure is mainly based on an Evolved Packet System (EPS) wireless network architecture, which is mainly composed of a Mobility Management Entity (MME), a Serving Gate Way (SGW), and a Serving Gate Way (SGW). It consists of a Packet Data Network Gateway (PGW).
  • EPS Evolved Packet System
  • 5G networks will be built in a flexible manner, and the network will be further abstracted into network slices.
  • Network slicing technology can cut a physical network into multiple virtual end-to-end networks.
  • Each virtual network slice is logically independent, and each network slice is instantiated by a separate network function or combination of functions.
  • the network slice-based system architecture is mainly composed of a control plane function (CPF) functional entity and a user plane function (UPF) functional entity, and the existing UE attachment procedure depends on the EPS wireless network architecture, which is difficult For current network slice-based system architectures, network deployment flexibility is low.
  • CPF control plane function
  • UPF user plane function
  • the present application provides a method and a device for attaching a user terminal, so as to implement attachment of a user terminal based on a network slicing system architecture, and improve flexibility of network deployment.
  • the first aspect provides a method for attaching a user terminal, including:
  • the first mobility management entity MM acquires session information of the user terminal UE;
  • the first MM selects a session management entity SM for the UE according to the session information, and the SM is used to manage the session establishment process of the UE;
  • the first MM allocates a network registration identifier to the UE, and the network registration identifier is used to identify the first MM and the SM serving the UE.
  • the above technical solution uses the independent first MM and SM to complete the network-based slicing system architecture.
  • the attachment process of the terminal can improve the flexibility of network deployment.
  • the method before the first MM acquires the session information of the UE, the method includes:
  • the first mobility management entity MM receives the attach request sent by the user terminal UE, and the attach request carries the session information of the UE.
  • the first MM acquires session information of the UE, including:
  • the first MM acquires session information sent by the second MM, and the session information is obtained by the second MM from the received attach request sent by the user terminal UE.
  • the attach request further carries a session establishment message; after the first MM selects the SM for the user terminal according to the session information, :
  • the first MM forwards the session establishment message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF according to the session establishment message, and sends a session establishment complete message to the first MM;
  • the first MM receives the session establishment complete message and performs the step of the first MM assigning a network registration identifier to the UE.
  • the method further includes:
  • the first MM sends an attach accept message carrying the network registration identifier to the UE.
  • the method before the first MM selects the SM for the user terminal according to the session information, the method further includes:
  • the method After the first MM selects the SM for the user terminal according to the session information, the method includes:
  • the first MM forwards the session establishment message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF according to the session establishment message, and sends a session establishment complete message to the first MM;
  • the first MM receives the session establishment complete message sent by the SM and performs the step of the first MM assigning a network registration identifier to the UE.
  • the method further includes:
  • the first MM sends a network registration identifier to the second MM to enable the second MM to send an attach accept message carrying the network registration identifier to the UE.
  • the method further includes:
  • the first MM sends a network registration identifier to the UE, so that the UE sends a session establishment message carrying the network registration identifier to the SM;
  • the first MM sends a network registration identifier to the SM, so that the SM manages the session establishment process of the UE.
  • the method further includes:
  • the first MM sends a network registration identifier to the second MM, so that the UE sends a session establishment message carrying the network registration identifier to the SM according to the second MM sending an attach accept message carrying the network registration identifier;
  • the first MM sends a network registration identifier to the SM, so that the SM manages the session establishment process of the UE.
  • the network registration identifier includes the MM identifier and the UE temporary identifier Or include the MM identity, the UE temporary identity, and the SM identity.
  • the session information includes one or more session identifiers
  • the session identifier is used to indicate the service attribute of the UE.
  • the second aspect provides a method for attaching a user terminal, including:
  • the first mobility management entity MM receives the attach request sent by the user terminal UE, and the attach request carries the session information of the UE, the session information of the UE includes the first type of session information and the second type of session information, and the first type of session information is used to select the second MM, the second type of session information is used to select the session management entity SM;
  • the first MM selects the second MM according to the first type of session information
  • the first MM sends the second type of session information to the second MM, so that the second MM selects the SM for the UE according to the second session information.
  • the third aspect provides a method for attaching a user terminal, including:
  • the first mobility management entity MM acquires session information of the user terminal UE;
  • the first MM allocates and sends a first network registration identifier to the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, and is used to identify the first MM that serves the UE.
  • the first MM sends the session management entity SM selection assistance information to the radio access network RAN to enable the RAN to select the SM according to the SM selection assistance information, and the SM is configured to allocate the second network registration identifier to the UE and manage the session establishment process of the UE, the second network.
  • the registration identifier includes an SM identifier and a UE temporary identifier for identifying the SM serving the UE.
  • the fourth aspect provides a method for attaching a user terminal, including:
  • the radio access network RAN acquires the session management entity SM to select the auxiliary information
  • the RAN selects the SM according to the SM selection assistance information, and the SM is used to allocate the second network registration identifier to the UE and manage the session establishment process of the UE.
  • the second network registration identifier includes the SM identifier and the UE temporary identifier, and is used to identify the SM serving as the UE.
  • the fifth aspect provides a method for attaching a user terminal, including:
  • the session management entity SM receives the session establishment message of the user terminal UE, and the session establishment message carries the session information of the user terminal UE, and is used to establish a user plane transmission path between the UE and the user plane function entity UPF;
  • the SM selects a user plane function entity UPF for the UE according to the session information
  • the SM establishes a user plane transmission path between the UE and the UPF.
  • a sixth aspect provides a method for attaching a user terminal, including:
  • the session management entity SM acquires a session establishment message sent by the user terminal UE through the radio access network RAN;
  • the SM allocates a second network registration identifier to the UE, and the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM serving as the UE.
  • a seventh aspect provides a method for attaching a user terminal, including:
  • the user terminal UE acquires a network registration identifier
  • the UE sends a session establishment message to the session management entity SM according to the network registration identifier to enable the SM to manage the session establishment process of the UE.
  • the eighth aspect provides a paging method for a user terminal, including:
  • the first mobility management entity MM receives the bearer network registration identifier sent by the session management entity SM. Paging information request;
  • the first MM sends a paging response message to the SM, where the paging response message includes location information of the UE, so that the SM pages the UE according to the paging response message and establishes a user plane transmission path between the UE and the user plane functional entity UPF. .
  • the above solution is based on the network slicing system architecture.
  • the SM message is not forwarded by the MM and implements paging to the user terminal, thereby improving the flexibility of network deployment.
  • a ninth aspect provides a paging method for a user terminal, including:
  • the first mobility management entity MM receives the downlink data notification message that is sent by the session management entity SM and carries the network registration identifier.
  • the first MM sends a paging message to the user terminal UE through the radio access network RAN;
  • the first MM receives the paging response message of the UE, and sends a user plane setup request message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • the foregoing solution is based on the network slicing system architecture.
  • the SM message is forwarded by the MM and implements a paging process for the user terminal, thereby improving the flexibility of network deployment.
  • a tenth aspect provides a paging method for a user terminal, including:
  • the session management entity SM sends a paging information request carrying the network registration identifier to the first mobility management entity MM;
  • the SM If receiving the paging response message sent by the first MM to the SM, the SM pages the UE according to the paging response message and establishes a user plane transmission path between the UE and the user plane function entity UPF, and the paging response message includes the user terminal. Location information of the UE.
  • the session management entity SM sends a downlink data notification message carrying the network registration identifier to the first mobility management entity MM to enable the first MM to send a paging message to the user terminal UE through the radio access network RAN and receive the paging response message of the UE.
  • the SM If the SM receives the user plane setup request message sent by the first MM, the SM establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • a twelfth aspect provides a first mobility management entity MM, including:
  • An obtaining unit configured to acquire session information of the user terminal UE
  • a selecting unit configured to select a session management entity SM for the UE according to the session information, where the SM is used to manage the UE Session establishment process;
  • an identifier unit configured to allocate a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that serve the UE.
  • the foregoing selecting unit is further configured to select a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage the session establishment process of the UE.
  • a twelfth aspect provides a first mobility management entity MM, including:
  • a receiving unit configured to receive an attach request sent by the user terminal UE, where the attach request carries the session information of the UE, where the session information of the UE includes the first type of session information and the second type of session information, and the first type of session information is used to select the second MM.
  • the second type of session information is used to select the session management entity SM;
  • a selecting unit configured to select a second MM according to the first type of session information
  • a sending unit configured to send the second type of session information to the second MM, so that the second MM selects the SM for the UE according to the second session information.
  • the thirteenth aspect provides a first mobility management entity MM, including:
  • An obtaining unit configured to acquire session information of the user terminal UE
  • An identifier unit configured to allocate and send a first network registration identifier for the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, and is used to identify the first MM that serves the UE;
  • a sending unit configured to send, to the radio access network RAN, the session management entity SM to select the auxiliary information, so that the RAN selects the SM according to the SM selection auxiliary information, and the SM is configured to allocate the second network registration identifier to the UE and manage the session establishment process of the UE.
  • the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM serving the UE.
  • the fourteenth aspect provides a radio access network RAN, including:
  • An obtaining unit configured to acquire a session management entity SM to select auxiliary information
  • a selecting unit configured to select an SM according to the SM selection assistance information, where the SM is used to allocate a second network registration identifier to the UE and manage a session establishment process of the UE, where the second network registration identifier includes an SM identifier and a UE a temporary identifier for identifying the SM serving the UE.
  • a fifteenth aspect provides a session management entity SM, comprising:
  • a selecting unit configured to select a user plane function entity UPF for the UE according to the session information
  • a sixteenth aspect provides a session management entity SM, comprising:
  • An acquiring unit configured to acquire a session establishment message sent by the user terminal UE by using a radio access network RAN;
  • a selecting unit configured to select an UPF for the UE according to the session information carried in the session establishment message, and establish a user plane transmission path between the UE and the UPF;
  • an identifier unit configured to allocate a second network registration identifier to the UE according to the session establishment message, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM served by the UE.
  • a seventeenth aspect provides a user terminal UE, including:
  • An obtaining unit configured to obtain a network registration identifier
  • a sending unit configured to send a session establishment message to the session management entity SM according to the network registration identifier, so that the SM manages the session establishment process of the UE.
  • the eighteenth aspect provides a first mobility management entity MM, including:
  • a receiving unit configured to receive a paging information request that is sent by the session management entity SM and carries a network registration identifier
  • a sending unit configured to send a paging response message to the SM, where the paging response message includes location information of the UE, so that the SM pages the UE according to the paging response message, and establishes a user plane between the UE and the user plane functional entity UPF. Transmission path.
  • the nineteenth aspect provides a first mobility management entity MM, including:
  • a receiving unit configured to receive a downlink data notification message that is sent by the session management entity SM and that carries the network registration identifier
  • a sending unit configured to send a paging message to the user terminal UE by using a radio access network RAN;
  • the sending unit is further configured to send a user plane setup request message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • the twentieth aspect provides a session management entity SM, including:
  • a sending unit configured to send, to the first mobility management entity MM, a paging information request that carries a network registration identifier
  • the twenty-first aspect provides a session management entity SM, including:
  • a sending unit configured to send a downlink data notification message carrying a network registration identifier to the first mobility management entity MM, so that the first MM sends a paging message to the user terminal UE through the radio access network RAN, and receives a paging response message of the UE. Afterwards, sending a user plane setup request message to the SM;
  • a twenty-second aspect provides a first mobility management entity MM, where the first MM includes a processor and a memory, wherein the memory stores a set of programs, and the processor is configured to call a program stored in the memory, so that the device performs the first Some or all of the methods of the first aspect, the second aspect, the third aspect, the eighth aspect, and the ninth aspect.
  • a twenty-third aspect provides a radio access network RAN, the RAN comprising a processor and a memory, wherein the memory stores a set of programs, and the processor is configured to call a program stored in the memory, so that the device performs the fourth aspect Or all methods.
  • a twenty-fourth aspect provides a session management entity SM, the SM comprising a processor and a memory, wherein the memory stores a set of programs, and the processor is configured to call a program stored in the memory, so that the device performs the fifth aspect, the sixth Some or all of the aspects.
  • a twenty-fifth aspect provides a user terminal UE, where the UE includes a processor and a memory, wherein the memory stores a set of programs, and the processor is configured to call a program stored in the memory, so that the device performs part or all of the seventh aspect method.
  • FIG. 1a is a schematic structural diagram of a system based on network slicing according to an embodiment of the present invention
  • FIG. 1b is a schematic structural diagram of another network slice-based system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for attaching a user terminal according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another method for attaching a user terminal according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of still another method for attaching a user terminal according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of still another method for attaching a user terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of still another method for attaching a user terminal according to an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of still another method for attaching a user terminal according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a paging process of a user terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of a paging process of another user terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a modularization of a first MM according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a first MM according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a modularization of a RAN according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a RAN according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a modularization of an SM according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of an SM according to an embodiment of the present invention.
  • 16 is a schematic diagram of modularization of a UE according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • a network slice includes a control plane function (CPF) and a user plane function (UPF).
  • CPF entity mainly performs the functions of mobility management (MM) such as device access authentication, security encryption, location registration, and session management entities (session management, such as establishment, release, and modification of user plane transmission paths.
  • MM mobility management
  • session management such as establishment, release, and modification of user plane transmission paths.
  • SM mobility management
  • UPF user plane function
  • FIG. 1b and FIG. 1b are schematic diagrams showing two network slice-based system architectures provided by an embodiment of the present invention.
  • the first type is shown in Figure 1a.
  • Multiple network slices share a common Mobility Management (CMM).
  • CCM Mobility Management
  • Each network slice has a separate SM and UPF.
  • the first network There are SM1 and UP1 in the slice, SM2 and UP2 in the second network slice, and a signaling interface between the Radio Access Network (RAN) and the CMM.
  • RAN Radio Access Network
  • There is a signaling interface between SM1 and SM2 There is a data plane interface exists between the RAN and UPF1 and UPF2.
  • the RAN may have a signaling interface with SM1 and SM2, or may have no signaling interface with SM1 and SM2, but transfer the signaling between them through the CMM.
  • the UE may have a signaling interface with the RAN or a data plane interface with the RAN.
  • Each network slice has a separate CPF and UPF. Take two network slices as an example.
  • the first network slice has MM1, SM1 and UPF1, and the second network slice has MM2, SM2 and UPF2, each network slice is completely isolated, there is a signaling interface between RAN and MM1 and MM2, there is a data plane interface between RAN and UPF1 and UPF2, and there is a signaling interface between user database and MM1 and MM2, database and SM1 There is a signaling interface between it and SM2.
  • the RAN may have a signaling interface with SM1 and SM2, or may have no signaling interface with SM1 and SM2, but transfer the signaling between them through the CMM.
  • the UE may have a signaling interface with the RAN or a data plane interface with the RAN.
  • the embodiment of the present invention provides the method for attaching the user terminal as shown in FIG. 2 to FIG. 7 and the paging procedure of the user terminal illustrated in FIG. 8 and FIG. Example.
  • FIG. 2 is a schematic flowchart diagram of a method for attaching a user terminal according to an embodiment of the present invention.
  • a method for attaching a user terminal in the embodiment of the present invention may include steps S01-S03.
  • the first MM acquires session information of the UE.
  • the attach process is a process in which the UE registers in the network before performing the service, and the UE can receive the service from the network only after the attach is successful.
  • the attaching process mainly needs to perform the following tasks: access authentication and encryption, resource cleaning and registration update, and session establishment of the UE.
  • the first MM may be the CMM as shown in FIG. 1a, or may be any MM as in FIG. 1b.
  • the session information includes one or more session identifiers, the session The identifier is used to indicate the service attribute of the UE, where the service attribute may be a service type, such as a data service, a video service, or a voice service, or may be a service area, such as a meter reading service, a car network service, or a mobile broadband service.
  • the first MM may receive an attach request sent by the UE, where the attach request carries the session information, and the first MM may obtain the session information carried in the attach request, and according to the Select the session information to select SM.
  • the first MM may receive an attach request sent by the UE, where the attach request carries one or more session information, and the first MM may obtain the And selecting another MM according to the session information to transmit the attach request, and/or selecting a corresponding SM according to the session information, where the other MM may select a corresponding one according to the session information.
  • SM wherein the default MM refers to an MM configured in multiple independent MMs to have information interaction with the UE.
  • the first MM may receive the session information sent by the default MM, and select a corresponding SM according to the session information.
  • the first MM selects a session management entity SM for the UE according to the session information, where the SM is used to manage a session establishment process of the UE.
  • the first MM allocates a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the first MM may perform the process of access authentication, NAS security negotiation, and location update according to the attach request, and then the first MM may be configured according to the
  • the session information is an SM selected by the UE, and the selection may be based on a pre-configured correspondence between the SM and session information.
  • the first MM may select a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage a session establishment process of the UE.
  • the first MM forwards the attach request to the selected SM, and the SM establishes a user plane transmission path between the UE and the UPF. After completing the establishment of the user plane transmission path between the UE and the UPF, the SM sends a session establishment complete message to the first MM. After receiving the session establishment complete message, the first MM may allocate a network registration identifier to the UE, where the network registration identifier may include three parts: an MM identifier, which may be used to identify the MM or CMM serving the UE.
  • the identifier is unique to the entire network; the SM identifier, The SM can be used to identify the SM that is served by the UE, and is used by the MM to forward a session request, where the identifier is unique to the entire network; the UE temporary identifier can be used to distinguish different UEs in the network slice, and the identifier is relative to the The network slice is unique.
  • the SM is an optional identifier.
  • the UE is allocated a network registration identifier, where the network identifier includes an MM identifier, an SM identifier, and a UE temporary identifier, where the SM identifier is Select the existing logo.
  • the first MM provides a network registration identifier to the SM, and the identifier indicates that the UE has passed the access authentication, and the first MM further sends an attach accept message carrying the network registration identifier to the UE, where The UE subsequently initiates a session establishment process of the first MM and the SM, the UE sends a session establishment message to the SM, and the SM selects a user for the UE according to the session information carried in the session establishment message.
  • the functional entity UPF is configured, and a user plane transmission path between the UE and the UPF is established. After establishing the user plane transmission path between the UE and the UPF, if there is no data transmission for a long time, the UE enters an idle state. In this state, if the EPS wireless network receives the downlink data of the user. When the message or signaling is sent, the network side triggers the paging process.
  • the first paging process includes: receiving, by the UPF, a user downlink data packet or signaling, and sending a downlink data notification message to the SM; the SM sending, to the first MM, the network registration identifier a paging information request; the first MM sends a paging response message to the SM, where the paging response message may include a UE identifier, UE location information, and may further include UE wireless capability information and paging assistance information, such as recommendation Calling cell, coverage level, current cell identity (identification, ID), current paging number, expected paging number, etc.; the SM paging the UE according to the paging response message, that is, to the UPF Returning a downlink data acknowledgement message, and sending the paging response message to the UE by using the RAN, so that the UE sends a paging response message carrying the SM identifier to the SM, to create the UE and the The user plane transmission path between UPFs.
  • the second paging process includes: the SM sending a downlink data notification message to the first MM; after receiving the downlink data notification message, the first MM sends a paging information to the UE by using the RAN Receiving, by the first MM, a paging response message of the UE, and sending a user plane establishment request to the SM; the SM establishes a user plane according to the user plane establishment request, and sends a user to the first MM A response message is created to confirm that the user plane has been established.
  • the first MM selects the SM for the UE by using the session information, and implements the attachment of the user terminal based on the network slicing system architecture through the session establishment process and the network registration identifier.
  • the slice and function combination of each part in the network slice are independent, and the combination of functions can be freely and flexibly deployed, so the flexibility of network deployment can be improved.
  • FIG. 1 is a schematic flowchart of another method for attaching a user terminal according to an embodiment of the present invention. As shown in FIG. 3, a method for attaching a user terminal according to an embodiment of the present invention may include steps S101 to S105.
  • the UE sends an attach request of a session setup message carrying session information of the UE to the first MM, where the first MM receives an attach request sent by the UE.
  • the embodiment of the present invention is applicable to the application scenario of FIG. 1a, where the first MM is a CMM, and the UE sends an attach request for carrying the session information of the UE to the first MM, where the first MM receives
  • the attach request sent by the UE acquires session information of the UE.
  • the session information includes one or more session identifiers, where the session identifier is used to indicate a service attribute of the UE, where the service attribute may be a service type, such as a data service, a video service, a voice service, or a service domain.
  • a service attribute such as a data service, a video service, a voice service, or a service domain.
  • the first MM may optionally perform one or more processes such as access authentication, non-access stratum (NAS) security negotiation, location update, and the like according to actual needs.
  • NAS non-access stratum
  • the first MM selects an SM for the UE according to the session information, and forwards the session establishment message to the SM.
  • the SM acquires the session establishment message, selects an UPF for the UE according to the session information, and establishes a user plane transmission path between the UE and the UPF.
  • the first MM may select an SM for the UE according to the session information, and the selection may be based on a pre-configured correspondence between the SM and session information.
  • the pre-configured session identifiers (SIDs) 1 to 4 correspond to SM1 to SM4, respectively. If the session information carried in the attach request includes SID2, the SM2 corresponding to the SID2 may be selected.
  • the SM may acquire a session establishment message of the UE, and obtain session information of the UE.
  • the SM may select an UPF for the UE according to the session information, and establish a user plane transmission path between the UE and the UPF.
  • the SM can also complete the process of service authorization, user plane path establishment, and AS security negotiation.
  • the first MM selects a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage a session establishment process of the UE.
  • the SM sends a session establishment complete message to the first MM, where the first MM receives the session establishment complete message.
  • the first MM allocates a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier, and the first MM sends an attach accept message carrying the network registration identifier to the UE.
  • the SM completes the establishment of the user plane transmission path between the UE and the UPF
  • the SM sends a session establishment complete message to the first MM
  • a network registration identifier is allocated to the UE.
  • the network identifier refer to the relevant part of the embodiment corresponding to FIG. 2 .
  • the first MM receives the attach request of the session setup message and the session information sent by the UE, and then selects the SM according to the session information, and sends a session establishment message to the SM, so that the SM establishes the UE and the UPF.
  • the user plane transmission path between the user, and then the network registration identifier is assigned by the first MM, thereby completing the entire attaching process, and adopting the first MM, SM, and other network entities to complete their respective functions and information interactions, thereby meeting the flexible deployment of the network entity. .
  • FIG. 4 is a schematic flowchart diagram of still another method for attaching a user terminal according to an embodiment of the present invention.
  • another method for attaching a user terminal according to an embodiment of the present invention may include steps S201 to S207.
  • the UE sends an attach request that carries the session information of the UE to the first MM, where the first MM receives an attach request sent by the user terminal UE.
  • the embodiment of the present invention is applicable to the application scenario of FIG. 1a, where the first MM is a CMM, and the UE sends an attach request for carrying the session information of the UE to the first MM, where the first MM receives
  • the attach request sent by the UE acquires session information of the UE.
  • the session information includes one or more session identifiers, where the SID is used to indicate a service attribute of the UE, where the service attribute may be a service type, such as a data service, a video service, or a voice service, or may be a service domain.
  • the first MM may optionally perform one or more processes, such as access authentication, non-access stratum NAS security negotiation, location update, etc., according to actual needs.
  • the first MM may select an SM for the UE according to the session information, and the selection may be based on a pre-configured correspondence between the SM and session information. For example, if the session identifiers SID1 to S4 correspond to SM1 to SM4, respectively, if the session information carried in the attach request includes SID2, the SM2 corresponding to the SID2 may be selected.
  • the first MM allocates a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier, where the first MM sends the network registration identifier to the UE. After the first MM selects the SM, the network registration identifier is also allocated to the UE and sent to the UE.
  • the network identifier refer to the relevant part of the embodiment corresponding to FIG. 2 .
  • the first MM sends the network registration identifier to the SM.
  • the SM manages a session establishment process of the UE and sends a session establishment complete message to the UE.
  • the UE acquires a network registration identifier, and sends a session establishment message to the SM according to the network registration identifier.
  • the session establishment message is forwarded to the SM by using the MM.
  • the SM selects an UPF for the UE according to the session information, and establishes a user plane transmission path between the UE and the UPF.
  • the first MM may send an attach accept message carrying the network registration identifier to the UE, and send the network registration identifier to the SM.
  • the SM determines that the UE has passed the access authentication.
  • the UE may send a session establishment message to the SM according to the network registration identifier, and after receiving the session establishment message, the SM may establish according to the session.
  • the message establishes a user plane transmission path between the UE and the UPF, and the specific process of establishing may refer to the relevant part of the corresponding embodiment of FIG. 3.
  • the SM can also complete the process of service authorization, user plane path establishment, and access stratum (AS) security negotiation.
  • AS access stratum
  • the first MM receives the attach request carrying the session information sent by the UE, and then selects the SM according to the session information, allocates the network registration identifier by the first MM, and sends the identifier to the SM and the UE.
  • Network registration ID After receiving the network registration identifier, the UE sends the The SM sends a session setup message, and the SM establishes a user plane transmission path between the UE and the UPF according to the session setup message, and completes the entire attach process.
  • the attach message does not carry the session establishment message, the first method is adopted.
  • Each network entity such as MM and SM completes its own functions and information interaction, which can meet the flexible deployment of network entities.
  • FIG. 5 is a schematic flowchart diagram of another method for attaching a user terminal according to an embodiment of the present invention.
  • another method for attaching a user terminal according to an embodiment of the present invention may include steps S301 to S305.
  • the UE sends an attach request that carries the session information of the UE and a session setup message to the first MM, where the first MM receives an attach request sent by the UE, and acquires session information of the UE.
  • the first MM may be an independent default MM, where the default MM is configured to have information interaction with the UE. MM.
  • the UE sends an attach request that carries the session information of the UE to the first MM, and the first MM receives an attach request sent by the UE, and acquires session information of the UE.
  • the session information includes one or more session identifiers, where the session identifier is used to indicate a service attribute of the UE, where the service attribute may be a service type, such as a data service, a video service, a voice service, or a service domain.
  • a service attribute such as a data service, a video service, a voice service, or a service domain.
  • the session information of the UE includes a first type of session information, where the second type of session information is used to select a second MM, and the second type of session information is used to select a session management entity.
  • the first MM may select the second MM according to the first type of session information; the first MM sends the second type of session information to the second MM, so that the second MM is
  • the second session information is that the UE selects the SM and allocates a network registration identifier to the UE.
  • the first MM is a default MM
  • the second MM is a non-default MM.
  • the default MM may select a non-default MM according to the first type of session information, and The default MM sends a second type of session information, which can be used for the non-default MM to select the SM.
  • the non-default MM may complete an attach procedure for assigning a network registration identifier to the UE.
  • the first MM may optionally perform one or more processes, such as access authentication, non-access stratum NAS security negotiation, location update, etc., according to actual needs.
  • the first MM selects an SM for the UE according to the session information, and turns to the SM. Send the session establishment message.
  • the SM acquires the session establishment message, selects an UPF for the UE according to the session information, and establishes a user plane transmission path between the UE and the UPF.
  • the session information is selected by the UE for the SM, and then the session establishment message carried in the attach request is forwarded to the
  • the SM is configured to select an UPF for the UE according to the session information, and establish a user plane transmission path between the UE and the UPF.
  • the SM can also complete the process of service authorization, user plane path establishment, and AS security negotiation.
  • the first MM may select a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage a session establishment process of the UE.
  • the SM sends a session establishment complete message to the first MM, where the first MM receives the session establishment complete message.
  • the first MM allocates a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier, and sends an attach accept message carrying the network registration identifier to the UE.
  • steps S302-S305 may also be replaced with the steps S202-S207 corresponding to FIG. 4.
  • the first MM may select an SM according to the received session information, and then allocate a network registration identifier by the first MM, and establish a user between the UE and the UPF by the SM.
  • the surface transmission path enables the network entities such as the first MM, the second MM, and the SM to complete their respective functions and information interactions to meet the flexible deployment of the network entity.
  • FIG. 6 is a schematic flowchart diagram of still another method for attaching a user terminal according to an embodiment of the present invention.
  • another method for attaching a user terminal according to an embodiment of the present invention may include steps S401 to S407.
  • the UE sends an attach request carrying session information to the second MM, where the second MM receives the attach request.
  • the second MM sends session information to the first MM, where the first MM acquires the session. Information.
  • the first MM may be an independent non-default MM
  • the non-default MM refers to multiple independent MMs that need to pass the default MM to perform with the UE.
  • MM for information interaction permissions.
  • the UE sends an attach request that carries the session information of the UE to the default MM, that is, the second MM receives the attach request sent by the UE, and determines a corresponding first MM according to the session information of the UE.
  • Non-default MM then send session information to the default MM non-default MM.
  • the second MM is MM1
  • the first MM is MM2.
  • the MM1 may select another MM according to the first type of session information in the attach request, such as according to the first The session information is selected by the MM2, and the MM2 can also select the SM corresponding to itself according to the second type of session information in the attach request.
  • the first MM selects a session management entity SM for the UE according to the session information, and forwards the session establishment message to the SM.
  • the SM acquires the session establishment message, selects an UPF for the UE according to the session information, and establishes a user plane transmission path between the UE and the UPF.
  • the SM sends a session establishment complete message to the first MM, where the first MM receives the session establishment complete message.
  • the first MM allocates a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier, and sends an attach accept message carrying the network registration identifier to the UE by using the second MM.
  • steps S404-S407 may also be replaced by the steps S202-S207 corresponding to FIG. 4.
  • the first MM may select the SM according to the session information sent by the second MM, and then allocate the network registration identifier by the first MM, and establish the UE and the UPF by the SM.
  • the user plane transmission path between the first MM, the second MM, and the SM can complete the respective functions and information interactions to meet the flexible deployment of the network entity.
  • FIG. 7 is a schematic flowchart diagram of still another method for attaching a user terminal according to an embodiment of the present invention. As shown in FIG. 7 , another method for attaching a user terminal according to an embodiment of the present invention is shown. The method may include steps S501 to S506.
  • S501 The user terminal UE sends an attach request message carrying the session information of the UE to the first MM, where the first MM acquires the session information in the attach request message.
  • the first MM may be referred to as a CMM or a default MM, where the default MM is configured to have multiple information exchange with the UE.
  • MM When the first MM is the CMM or the default MM, the UE may directly send an attach request message carrying the session information of the UE to the first MM. The first MM acquires session information in the attach request message.
  • the non-default MM refers to an MM that needs to perform information interaction with the UE by using a default MM, where the user terminal UE
  • the second MM that is, the default MM, sends an attach request message carrying the session information of the UE, and then the second MM sends the session information to the first MM.
  • the first MM may optionally perform one or more processes, such as access authentication, non-access stratum NAS security negotiation, location update, etc., according to actual needs.
  • the first MM allocates and sends a first network registration identifier to the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, and is used to identify the first MM that is served by the UE.
  • the first MM may allocate a first network registration identifier to the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, where the MM identifier is used to identify an MM that serves the UE, such as a transmission.
  • An MM-related NAS message the identifier is unique to the entire network, and the UE temporary identifier is used for MM to distinguish different UEs, and is unique to each MM slice.
  • the first MM sends the SM selection assistance information to the radio access network RAN.
  • the radio access network RAN acquires the session management entity SM to select the auxiliary information, and the RAN selects the SM according to the SM selection assistance information, where the SM is used to allocate the second network registration identifier to the UE and manage the session establishment process of the UE.
  • the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM that serves the UE.
  • the SM selection assistance information may be generated by the first MM according to the session information provided by the UE, or may be generated according to information configured in advance by the first MM.
  • the SM selection assistance information includes an SM list and a session type of each SM service (using a session identifier SID to indicate a different session type), for example: SM1: SID1, SID2; SM2: SID3; SM3: SID4, SID5, and the like.
  • the SM selection assistance information may also be a list of SIDs and corresponding SMs providing services, for example: SID1: SM1, SM2; SID2: SM3; SID3: SM4, SM5, and the like.
  • the first MM may send an attach accept message carrying the SM selection assistance information and the first network registration identifier to the UE.
  • the UE may initiate a session setup message to the RAN, where the session setup message carries the SM selection indication information, and the SM selection indication information may include session information, used to indicate the session type requested by the UE, and may also include The SM selects auxiliary information.
  • the RAN may select an appropriate SM for the UE to serve according to the SM selection assistance information sent by the UE.
  • the first MM may configure the SM selection assistance information in the RAN, and the RAN may acquire the pre-configured SM selection assistance information.
  • the session management entity SM acquires a session establishment message sent by the user terminal UE through the radio access network RAN, where the session establishment message carries the session information.
  • the SM selects an UPF for the UE according to the session information, and establishes a user plane transmission path between the UE and the UPF.
  • the SM can also complete the process of service authorization, user plane path establishment, and AS security negotiation.
  • Step S505 Please refer to the specific explanation of step S103 in the embodiment of the invention in FIG.
  • the SM allocates a second network registration identifier to the UE according to the session establishment message, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM served by the UE.
  • the RAN sends a session establishment message to the SM, and then the SM allocates a second network registration identifier to the UE according to the session establishment message, where the second network registration identifier includes an SM identifier and a UE temporary identifier, where
  • the SM identifier is used to identify the SM that is served by the UE, and may be used for RAN routing related NAS messages, which are unique to the entire network, and the UE temporary identifier is used by the SM to distinguish different UEs, and each of the MMs is different.
  • the slice is unique.
  • the UE sends an attach request message carrying the session information of the UE to the first MM, where the first MM acquires the session information in the attach request message, and the first MM allocates and sends the session information to the UE.
  • FIG. 8 is a schematic diagram of a paging process of a user terminal according to an embodiment of the present invention.
  • a paging method for a user terminal according to an embodiment of the present invention may include steps S601 to S607.
  • the UPF receives the downlink data packet or signaling of the user, and sends a downlink data notification message to the SM.
  • the SM receives the downlink data notification message, and sends a paging information request that carries the network registration identifier to the first MM.
  • the first MM sends a paging response message to the SM according to the paging information request, where the paging response message may include a UE identifier, UE location information, and may further include UE wireless capability information and paging assistance.
  • Information such as recommended paging cell, coverage level, current cell ID, current paging number, expected paging number, etc.;
  • the SM performs paging on the UE according to the paging response message, that is, may return a downlink data confirmation message to the UPF.
  • the SM sends the paging message to the UE by using the RAN.
  • the UE sends a paging response message carrying the SM identifier to the SM.
  • the embodiment of the invention is based on the network slicing system architecture.
  • the SM message is not forwarded by the MM and implements the paging process of the user terminal, thereby improving the flexibility of network deployment.
  • FIG. 9 is a schematic diagram of a paging process of another user terminal according to an embodiment of the present invention. As shown in FIG. 9, another paging method of the user terminal provided by the embodiment of the present invention may include steps S701 to S706.
  • the UPF receives the downlink data packet or the signaling of the user, and sends a downlink data notification message to the first MM by using the SM.
  • the first MM After receiving the downlink data notification message, the first MM sends paging information to the UE by using the RAN.
  • the UE sends a paging response message to the first MM, where the first MM receives the paging response message.
  • the first MM sends a user plane establishment request to the SM.
  • the SM establishes or creates a user plane transmission path between the UE and the UPF according to the user plane establishment request.
  • the SM sends a user plane setup response message to the first MM, to confirm that the user plane has been established.
  • the SM message is forwarded by the MM based on the network slicing system architecture and the paging process of the user terminal is implemented, thereby improving the flexibility of network deployment.
  • FIG. 10 is a schematic diagram of a modularity of a first MM according to an embodiment of the present invention.
  • the first MM may include: an obtaining unit 11, a selecting unit 12, and an allocating unit 13, wherein:
  • the obtaining unit 11 is configured to acquire session information of the user terminal UE.
  • the selecting unit 12 is configured to select a session management entity SM for the UE according to the session information, where the SM is used to manage a session establishment process of the UE;
  • the identifier unit 13 is configured to allocate a network registration identifier to the UE, where the network registration identifier is used to identify the first MM and the SM that are served by the UE.
  • the selecting unit 12 may further select a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage a session establishment process of the UE.
  • the first MM further includes a receiving unit 14;
  • the receiving unit 14 is configured to receive an attach request sent by the user terminal UE, where the attach request carries session information of the UE.
  • the obtaining unit 11 is specifically configured to:
  • the attach request further carries a session establishment message;
  • the first MM further includes a forwarding unit 15;
  • the forwarding unit 15 is configured to forward the session establishment message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF according to the session establishment message. Sending a session establishment complete message to the first MM;
  • the receiving unit 14 is configured to receive the session establishment complete message.
  • the first MM further includes a sending unit 16;
  • the sending unit 16 is configured to send, to the UE, an attach accept message carrying the network registration identifier.
  • the receiving unit 14 is further configured to receive a session establishment message sent by the second MM, where the session establishment message is obtained by the second MM from the attach request;
  • the forwarding unit 15 is further configured to forward the session establishment message to the SM, so that the SM establishes a user plane between the UE and the user plane function entity UPF according to the session establishment message. Transmitting a path and transmitting a session establishment complete message to the first MM;
  • the receiving unit 14 is further configured to receive a session establishment complete message sent by the SM.
  • the sending unit 16 is further configured to send the network registration identifier to the second MM, so that the second MM sends an attach accept message carrying the network registration identifier to the UE.
  • the sending unit 16 is further configured to send the network registration identifier to the UE, so that the UE sends a session establishment message carrying the network registration identifier to the SM, and sends the message to the SM.
  • the network registration identifier is such that the SM manages a session establishment process of the UE.
  • the sending unit 16 is further configured to send the network registration identifier to the second MM, so that the UE sends an attach accept message carrying the network registration identifier according to the second MM to the
  • the SM sends a session establishment message carrying a network registration identifier; the network registration identifier is sent to the SM, so that the SM manages a session establishment process of the UE.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier.
  • the session information includes one or more session identifiers, where the session identifier is used to indicate a service attribute of the UE.
  • the receiving unit 14 is configured to receive an attach request sent by the user terminal UE, where the attach request carries session information of the UE, where the session information of the UE includes the first type of session information and the second type of session. Information, the first type of session information is used to select a second MM, and the second type of session information is used to select a session management entity SM;
  • the selecting unit 12 is configured to select a second MM according to the first type of session information
  • the sending unit 16 is configured to send the second type of session information to the second MM, so that the second MM selects the SM for the UE according to the second session information.
  • the obtaining unit 11 is configured to acquire session information of the user terminal UE.
  • the identifier unit 13 is configured to allocate and send a first network registration identifier to the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, and is used to identify the first MM that is served by the UE. ;
  • the sending unit 16 is configured to send, to the radio access network RAN, a session management entity SM to select auxiliary information, so that the RAN selects an SM according to the SM selection auxiliary information, where the SM is used to allocate a second network registration identifier to the UE. And managing the session establishment process of the UE, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM that serves the UE.
  • the sending unit 16 is specifically configured to: send, to the UE, an attach accept message carrying the SM selection assistance information and the first network registration identifier, so that the UE sends the UE to the radio access network RAN. And a session establishment message carrying the SM selection assistance information to enable the RAN to select an SM according to the SM selection assistance information.
  • the receiving unit 14 is further configured to receive, by the SM, a paging information request that carries the network registration identifier;
  • the sending unit 16 is further configured to send a paging response message to the SM, where the paging response message includes location information of the UE, and may further include UE wireless capability information, so that the SM responds according to the paging
  • the message pages the UE and establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • the receiving unit 14 is further configured to receive a downlink data notification message that is sent by the SM and that carries the network registration identifier.
  • the sending unit 16 is further configured to send a paging message to the UE by using a radio access network RAN;
  • the receiving unit 14 is further configured to receive a paging response message of the UE;
  • the sending unit 16 is further configured to send a user plane setup request message to the SM, so that the SM establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • FIG. 11 is a schematic structural diagram of a first MM according to an embodiment of the present invention.
  • the first MM 1000 can include a processor 1001 and a communication interface 1002, wherein the processor 1001 is coupled to the communication interface 1002, such as through a communication bus 1003.
  • the processor 1001 may be a central processing unit (CPU).
  • Communication interface 1002 can be a wireless communication interface, a wired communication interface, or a combination of both.
  • the first MM may also include a memory 1004.
  • the memory 1004 may include a volatile memory such as a random-access memory (RAM); the memory may further include a non-volatile memory such as a read-only memory (ROM), a flash memory, A hard disk drive (HDD) or a solid-state drive (SSD); the memory 1004 may also include any combination of the above types of memories. If the processor 1002 includes a CPU, the memory can also store the program code and transmit the program code to the CPU to cause the CPU to implement the embodiments of the present invention in accordance with the instructions of the program code.
  • the processor 1001 is configured to perform acquiring session information of the user terminal UE.
  • the processor 1001 is further configured to perform, according to the session information, selecting a session management entity SM for the UE, where the SM is used to manage a session establishment process of the UE;
  • the processor 1001 is further configured to perform a network registration identifier for the UE, where the network registration identifier is used to identify the first MM and the SM that are serving the UE.
  • the processor 1001 is further configured to select a session management entity SM for the UE according to the pre-configuration information, where the SM is used to manage a session establishment process of the UE.
  • the processor 1001 further performs receiving an attach request sent by the user terminal UE, where the attach request carries session information of the UE.
  • the processor 1001 performs to acquire session information sent by the second MM, and the session information is obtained by the second MM from an attach request sent by the received user terminal UE.
  • the attach request further carries a session establishment message; the processor 1001 further performs forwarding the session establishment message to the SM, so that the SM establishes the UE according to the session establishment message
  • the user plane transmits a user plane transmission path between the entity UPFs and sends a session establishment complete message to the first MM; receiving the session establishment complete message.
  • the processor 1001 further performs transmitting an attach accept message carrying the network registration identifier to the UE.
  • the processor 1001 further performs a session establishment that receives the second MM transmission. a message that the session establishment message is obtained by the second MM from the attach request; forwarding the session establishment message to the SM, so that the SM establishes for the UE according to the session setup message a user plane transmission path between the UE and the user plane function entity UPF, and sending a session establishment complete message to the first MM; and receiving a session establishment complete message sent by the SM.
  • the processor 1001 further performs sending the network registration identifier to the UE, so that the UE sends a session establishment message carrying the network registration identifier to the SM; sending the message to the SM
  • the network registration identifier is such that the SM manages a session establishment process of the UE.
  • the processor 1001 further performs sending, by the second MM, the network registration identifier, to enable the UE to send an attach accept message carrying the network registration identifier according to the second MM to the
  • the SM sends a session establishment message carrying a network registration identifier; the network registration identifier is sent to the SM, so that the SM manages a session establishment process of the UE.
  • the processor 1001 may also optionally perform one or more processes of access authentication, non-access stratum NAS security negotiation, location update, and the like according to actual needs.
  • the network registration identifier includes an MM identifier and a UE temporary identifier, or includes an MM identifier, a UE temporary identifier, and an SM identifier.
  • the session information includes one or more session identifiers, and the session identifier is used to indicate a service attribute of the UE.
  • the processor 1001 further performs an attach request sent by the user terminal UE, where the attach request carries session information of the UE, and the session information of the UE includes the first type of session information and the second class. Session information, the first type of session information is used to select a second MM, the second type of session information is used to select a session management entity SM; the second MM is selected according to the first type of session information; The MM sends the second type of session information, so that the second MM selects the SM for the UE according to the second session information.
  • the processor 1001 further performs acquiring session information of the user terminal UE, and allocating and transmitting a first network registration identifier for the UE, where the first network registration identifier includes an MM identifier and a UE temporary identifier, The first MM that is identified as serving the UE; the session management entity SM is selected to send assistance information to the radio access network RAN to enable the RAN to select an SM according to the SM selection assistance information, and the SM is used as a UE Allocating a second network registration identifier and managing a session establishment process of the UE, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify that the UE is serving The SM.
  • the first network registration identifier includes an MM identifier and a UE temporary identifier, The first MM that is identified as serving the UE
  • the session management entity SM is selected to send assistance information to the radio access network RAN to enable the RAN to select an
  • the processor 1001 performs a session establishment message for receiving the user terminal UE, where the session establishment message carries session information of the user terminal UE, and is used to establish a user between the UE and the user plane function entity UPF. a plane transmission path, selecting a user plane function entity UPF for the UE according to the session information, and establishing a user plane transmission path between the UE and the UPF.
  • the processor 1001 further performs a paging information request that is sent by the SM and carries the network registration identifier, and sends a paging response message to the SM, where the paging response message includes a UE
  • the location information may further include UE radio capability information, so that the SM pages the UE according to the paging response message and establishes a user plane transmission path between the UE and the user plane function entity UPF.
  • FIG. 12 is a schematic diagram of a modularization of a RAN according to the present invention.
  • the RAN may include: an obtaining unit 21 and a selecting unit 22.
  • the obtaining unit 21 is configured to acquire the session management entity SM to select auxiliary information.
  • the selecting unit 22 is configured to select an SM according to the SM selection assistance information, where the SM is used to allocate a second network registration identifier to the UE and manage a session establishment process of the UE, where the second network registration identifier includes an SM An identifier and a UE temporary identifier are used to identify the SM serving the UE.
  • the obtaining unit is specifically configured to:
  • the session management entity SM of the first MM Acquiring the session management entity SM of the first MM to select the auxiliary information, where the SM selection assistance information is generated by the session information of the user terminal UE; or acquiring the session establishment message that is sent by the UE and carrying the SM selection assistance information. And the SM selection assistance information is carried in an attach accept message sent by the first MM to the UE; or, the pre-configured session management entity SM selects the auxiliary information.
  • FIG. 13 is a schematic structural diagram of a RAN according to an embodiment of the present invention.
  • the RAN2000 may include a processor 2001 and a communication interface 2002, where the processor 2001 and the communication interface 2002 are connected, for example, The communication bus 2003 is connected.
  • the processor 2001 can be central Central processing unit (CPU).
  • Communication interface 2002 can be a wireless communication interface, a wired communication interface, or a combination of both.
  • the first MM may also include a memory 2004.
  • the memory 2004 may include a volatile memory such as a random-access memory (RAM); the memory may further include a non-volatile memory such as a read-only memory (ROM), a flash memory, A hard disk drive (HDD) or a solid state drive (SSD); the memory 2004 may also include any combination of the above types of memories.
  • the processor 1002 includes a CPU, the memory can also store the program code and transmit the program code to the CPU to cause the CPU to implement the embodiments of the present invention in accordance with the instructions of the program code.
  • the processor 2001 is configured to acquire a session management entity SM to select auxiliary information.
  • the processor 2001 is further configured to select an SM according to the SM selection assistance information, where the SM is used to allocate a second network registration identifier to the UE and manage a session establishment process of the UE, where the second network registration identifier includes an SM An identifier and a UE temporary identifier are used to identify the SM serving the UE.
  • the processor 2001 is specifically configured to acquire session management entity SM selection assistance information sent by the first MM, where the SM selection assistance information is generated by session information of the user terminal UE; or a session establishment message that is sent by the UE and carries the SM selection assistance information, where the SM selection assistance information is carried in an attach accept message sent by the first MM to the UE; or, the pre-configured session management entity is obtained.
  • SM selects auxiliary information.
  • FIG. 14 is a schematic diagram of the modularization of the SM of the present invention.
  • the SM may include: an obtaining unit 31, a selecting unit 32, and an establishing unit 33.
  • the obtaining unit 31 is configured to acquire a session establishment message of the user terminal UE, where the session establishment message carries session information of the user terminal UE, and is used to establish a user plane transmission path between the UE and the user plane function entity UPF;
  • the selecting unit 32 is configured to select a user plane function entity UPF for the UE according to the session information;
  • the establishing unit 33 is configured to establish a user plane transmission path between the UE and the UPF.
  • the session establishment message is from the first mobility management entity MM, the second MM, or the user.
  • the terminal UE acquires.
  • the SM may include an obtaining unit 31, a selecting unit 32, and an identifying unit 33;
  • the acquiring unit 31 is configured to acquire a session establishment message sent by the user terminal UE through the radio access network RAN;
  • the selecting unit 32 is configured to select an UPF for the UE according to the session information carried in the session establishment message, and establish a user plane transmission path between the UE and the UPF;
  • the identifier unit 33 is configured to allocate a second network registration identifier to the UE according to the session establishment message, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used to identify the SM that is served by the UE. .
  • the SM may include an obtaining unit 31 and a sending unit 34;
  • the obtaining unit 31 is configured to acquire a network registration identifier.
  • the sending unit 34 is configured to send a session establishment message to the session management entity SM according to the network registration identifier, so that the SM manages a session establishment process of the UE.
  • the sending unit 34 is further configured to send, to the first mobility management entity MM, an attach request that carries session information of the UE, so that the first MM selects an SM according to the session information, and allocates a network to the UE. Registration ID.
  • the SM may include a sending unit 34 and an establishing unit 33;
  • the sending unit 34 is configured to send, to the first mobility management entity MM, a paging information request that carries a network registration identifier;
  • the establishing unit 33 is configured to: if receiving the paging response message sent by the first MM to the SM, paging the UE according to the paging response message, and establishing the function of the UE and the user plane A user plane transmission path between the entity UPFs, the paging response message including location information of the user terminal UE.
  • the SM may include a sending unit 34 and an establishing unit 33;
  • the sending unit 34 is configured to send, to the first mobility management entity MM, a downlink data notification message that carries the network registration identifier, so that the first MM sends a paging message to the user terminal UE through the radio access network RAN. After receiving the paging response message of the UE, sending a user plane establishment request message to the SM;
  • the establishing unit 33 is configured to establish a user plane transmission path between the UE and the user plane function entity UPF if the SM receives the user plane establishment request message sent by the first MM.
  • FIG. 15 is a schematic structural diagram of an SM3000 according to an embodiment of the present invention.
  • the SM3000 may include a processor 2001 and a communication interface 3002, wherein the processor 3001 is connected to the communication interface 3002, such as through a communication bus 3003.
  • the processor 3001 may be a CPU.
  • Communication interface 2002 can be a wireless communication interface, a wired communication interface, or a combination of both.
  • the SM may also include a memory 3004.
  • the memory 3004 can include volatile memory such as RAM; the memory can also include non-volatile memory such as ROM, flash memory, HDD, or SSD; the memory 2004 can also include any combination of the types of memory described above. If the processor 3002 includes a CPU, the memory can also store the program code and transmit the program code to the CPU to cause the CPU to implement the embodiments of the present invention in accordance with the instructions of the program code.
  • the processor 3001 is configured to perform a session establishment message for acquiring a user terminal UE, where the session establishment message carries session information of the user terminal UE, and is used to establish a user plane transmission path between the UE and the user plane function entity UPF;
  • the processor 3001 is further configured to perform selecting a user plane function entity UPF for the UE according to the session information.
  • the processor 3001 is further configured to perform establishing a user plane transmission path between the UE and the UPF.
  • the session setup message is obtained from a first mobility management entity MM, a second MM, or a user terminal UE.
  • the processor 3001 is configured to acquire a session establishment message sent by the user terminal UE through the radio access network RAN; select the UPF for the UE according to the session information carried in the session establishment message, and establish a user plane transmission path between the UE and the UPF; assigning a second network registration identifier to the UE according to the session establishment message, where the second network registration identifier includes an SM identifier and a UE temporary identifier, and is used for identifying Said SM of the UE service.
  • the processor 3001 is further configured to acquire a network registration identifier, and send a session establishment message to the session management entity SM according to the network registration identifier, so that the SM manages a session establishment process of the UE;
  • a mobility management entity MM sends an attach request carrying the session information of the UE, so that the first MM selects an SM according to the session information and allocates a network registration identifier to the UE.
  • the processor 3001 is further configured to send, to the first mobility management entity MM, a paging information request that carries a network registration identifier; if receiving, the paging response sent by the first MM to the SM And the message is sent to the UE according to the paging response message, and a user plane transmission path between the UE and the user plane function entity UPF is established, where the paging response message includes location information of the user terminal UE.
  • the processor 3001 is further configured to send, to the first mobility management entity MM, a downlink data notification message that carries the network registration identifier, so that the first MM passes the radio access network RAN to the user terminal.
  • the UE After receiving the paging message and receiving the paging response message of the UE, the UE sends a user plane establishment request message to the SM; if the SM receives the user plane establishment request message sent by the first MM, the User plane transmission path between the UE and the user plane function entity UPF.
  • FIG. 16 is a schematic diagram of modularization of a UE according to an embodiment of the present invention.
  • the UE includes: an obtaining unit 41 and a sending unit 42;
  • the obtaining unit 41 is configured to acquire a network registration identifier.
  • the sending unit 42 is configured to send a session establishment message to the session management entity SM according to the network registration identifier, so that the SM manages a session establishment process of the UE.
  • the sending unit 42 is further configured to send, to the first mobility management entity MM, an attach request that carries session information of the UE, so that the first MM selects an SM according to the session information.
  • the UE allocates a network registration identifier.
  • FIG. 17 is a schematic structural diagram of a user terminal UE4000 according to an embodiment of the present invention.
  • the UE 4000 may include a processor 4001 and a communication interface 4002, wherein the processor 4001 is connected to the communication interface 4002, such as through a communication bus 4003.
  • the processor 4001 may be a CPU.
  • Communication interface 4002 can be a wireless communication interface, a wired communication interface, or a combination of both.
  • the UE may also include a memory 4004.
  • the memory 4004 can include volatile memory such as RAM; the memory can also include non-volatile memory such as ROM, flash memory, HDD or SSD; the memory 4004 can also include any combination of the types of memory described above. If the processor 4002 includes The CPU, the memory, may also store the program code and transmit the program code to the CPU such that the CPU implements the embodiment of the present invention in accordance with the instruction of the program code.
  • the processor 4001 is configured to perform acquiring a network registration identifier
  • the processor 4001 is further configured to perform a session establishment process of sending a session establishment message to the session management entity SM according to the network registration identifier, so that the SM manages the UE.
  • the processor 4001 is further configured to send, to the first mobility management entity MM, an attach request that carries session information of the UE, so that the first MM selects an SM according to the session information, and The UE allocates a network registration identifier.
  • a person skilled in the art can understand that all or part of the steps of implementing the foregoing embodiments may be completed by a program, and the program may be stored in a computer readable storage medium, and the storage medium may be stored in a random manner.
  • a memory a read only memory, a flash memory, a hard disk, a solid state disk, a magnetic tape, a floppy disk, an optical disc, or any combination thereof.

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Abstract

一种用户终端的附着方法及设备，其中，一种用户终端的附着方法，包括：第一移动性管理实体MM获取用户终端UE的会话信息；第一MM根据会话信息为UE选择会话管理实体SM，SM用于管理UE的会话建立过程；第一MM为UE分配网络注册标识，网络注册标识用于识别为UE服务的第一MM和SM。本发明实施例的技术方案可以实现基于网络切片系统架构的用户终端的附着，有利于提高网络部署的灵活性。

Description

一种用户终端的附着方法及设备 技术领域
本发明涉及通信技术领域，尤其涉及一种用户终端的附着方法及设备。
背景技术
附着过程是用户终端(user equipment，UE)进行业务前在网络中注册的必要过程，UE只有在附着完成后才可以接收来自网络的服务。目前，UE附着流程的实现主要是基于演进分组系统(Evolved Packet System，EPS)无线网络架构，该架构主要由移动性管理实体(Mobility Management Entity，MME)、服务网关(Serving Gate Way，SGW)和分组数据网络网关(Packet Data Network Gateway，PGW)组成。
为了满足广泛变化的通信业务需求，5G网络将以灵活的方式进行构建，网络将被进一步抽象为网络切片。网络切片技术可以将一个物理网络切割为多个虚拟的端到端的网络，各个虚拟网络切片之间是逻辑独立的，且每个网络切片由一个独立的网络功能或功能组合实例化构成。基于网络切片的系统架构主要由控制面(control plane function，CPF)功能实体和用户面功能(user plane function，UPF)功能实体组成，而现有的UE附着流程需依赖于EPS无线网络架构，难以适用于当前的基于网络切片的系统架构中，网络部署灵活性较低。
发明内容
本申请提供了一种用户终端的附着方法及设备，以期实现基于网络切片系统架构的用户终端的附着，提高网络部署的灵活性。
第一方面提供了一种用户终端的附着方法，包括：
第一移动性管理实体MM获取用户终端UE的会话信息；
第一MM根据会话信息为UE选择会话管理实体SM，SM用于管理UE的会话建立过程；
第一MM为UE分配网络注册标识，网络注册标识用于识别为UE服务的第一MM和SM。
上述技术方案采用独立的第一MM以及SM完成基于网络切片系统架构的用 户终端的附着过程，可以提高网络部署的灵活性。
结合第一方面，在第一方面的第一种可能的实施方式中，第一MM获取UE的会话信息之前，还包括：
第一移动性管理实体MM接收用户终端UE发送的附着请求，附着请求携带UE的会话信息。
结合第一方面，在第一方面的第二种可能的实施方式中，第一MM获取UE的会话信息，包括：
第一MM获取第二MM发送的会话信息，会话信息由第二MM从接收到的用户终端UE发送的附着请求中获得。
结合第一方面的第二种可能的实施方式，在第一方面的第三种可能的实施方式中，附着请求还携带会话建立消息；第一MM根据会话信息为用户终端选择SM之后，还包括：
第一MM向SM转发会话建立消息，以使SM根据会话建立消息建立UE与用户面功能实体UPF之间的用户面传输路径并向第一MM发送会话建立完成消息；
第一MM接收会话建立完成消息并执行第一MM为UE分配网络注册标识的步骤。
结合第一方面的第三种可能的实施方式，在第一方面的第四种可能的实施方式中，第一MM为UE分配网络注册标识之后，还包括：
第一MM向UE发送携带网络注册标识的附着接受消息。
结合第一方面的第二种可能的实施方式，在第一方面的第五种可能的实施方式中，第一MM根据会话信息为用户终端选择SM之前，还包括：
第一MM接收第二MM发送的会话建立消息，会话建立消息是由第二MM从附着请求中获得；
第一MM根据会话信息为用户终端选择SM之后，还包括：
第一MM向SM转发会话建立消息，以使SM根据会话建立消息为UE建立UE与用户面功能实体UPF之间的用户面传输路径并向第一MM发送会话建立完成消息；
第一MM接收SM发送的会话建立完成消息并执行第一MM为UE分配网络注册标识的步骤。
结合第一方面的第五种可能的实施方式，在第一方面的第六种可能的实施方式中，第一MM为UE分配网络注册标识之后，还包括：
第一MM向第二MM发送网络注册标识以使第二MM向UE发送携带网络注册标识的附着接受消息。
结合第一方面的第一种可能的实施方式，在第一方面的第七种可能的实施方式中，第一MM为UE分配网络注册标识之后，还包括：
第一MM向UE发送网络注册标识，以使UE向SM发送携带网络注册标识的会话建立消息；
第一MM向SM发送网络注册标识，以使SM管理UE的会话建立过程。
结合第一方面的第二种可能的实施方式，在第一方面的第八种可能的实施方式中，第一MM为UE分配网络注册标识之后，还包括：
第一MM向第二MM发送网络注册标识，以使UE根据第二MM发送携带网络注册标识的附着接受消息向SM发送携带网络注册标识的会话建立消息；
第一MM向SM发送网络注册标识，以使SM管理UE的会话建立过程。
结合第一方面的第一种至第九种可能的实施方式中的任意一种可能的实施方式，在第一方面的第十种可能的实施方式中，网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识。
结合第一方面的第一种至第十种可能的实施方式中的任意一种可能的实施方式，在第一方面的第十一种可能的实施方式中，会话信息包括一个或多个会话标识，会话标识用于指示UE的业务属性。
第二方面提供了一种用户终端的附着方法，包括：
第一移动管理实体MM接收用户终端UE发送的附着请求，附着请求携带UE的会话信息，UE的会话信息包括第一类会话信息和第二类会话信息，第一类会话信息用于选择第二MM，第二类会话信息用于选择会话管理实体SM；
第一MM根据第一类会话信息选择第二MM；
第一MM向第二MM发送第二类会话信息，以使第二MM根据第二会话信息为UE选择SM。
第三方面提供了一种用户终端的附着方法，包括：
第一移动性管理实体MM获取用户终端UE的会话信息；
第一MM为UE分配和发送第一网络注册标识，第一网络注册标识包括MM标识和UE临时标识，用于识别为UE服务的第一MM；
第一MM向无线接入网络RAN发送会话管理实体SM选择辅助信息以使RAN根据SM选择辅助信息选择SM，SM用于为UE分配第二网络注册标识并管理UE的会话建立过程，第二网络注册标识包括SM标识和UE临时标识，用于识别为UE服务的SM。
第四方面提供了一种用户终端的附着方法，包括：
无线接入网络RAN获取会话管理实体SM选择辅助信息；
RAN根据SM选择辅助信息选择SM，SM用于为UE分配第二网络注册标识并管理UE的会话建立过程，第二网络注册标识包括SM标识和UE临时标识，用于识别为UE服务的SM。
第五方面提供了一种用户终端的附着方法，包括：
会话管理实体SM接收用户终端UE的会话建立消息，会话建立消息携带用户终端UE的会话信息，用于建立UE与用户面功能实体UPF之间的用户面传输路径；
SM根据会话信息为UE选择用户面功能实体UPF；
SM建立UE和UPF之间的用户面传输路径。
第六方面提供了一种用户终端的附着方法，包括：
会话管理实体SM获取用户终端UE通过无线接入网络RAN发送的会话建立消息；
SM根据会话建立消息携带的会话信息为UE选择UPF，并建立UE和UPF之间的用户面传输路径；
SM为UE分配第二网络注册标识，第二网络注册标识包括SM标识和UE临时标识，用于识别为UE服务的SM。
第七方面提供了一种用户终端的附着方法，包括：
用户终端UE获取网络注册标识；
UE根据网络注册标识向会话管理实体SM发送会话建立消息以使SM管理UE的会话建立过程。
第八方面提供了一种用户终端的寻呼方法，包括：
第一移动性管理实体MM接收会话管理实体SM发送的携带网络注册标识的 寻呼信息请求；
第一MM向SM发送寻呼响应消息，寻呼响应消息包括UE的位置信息，以使SM根据寻呼响应消息对UE进行寻呼并建立UE与用户面功能实体UPF之间的用户面传输路径。
上述方案基于网络切片系统架构，SM消息不经过MM转发并实现对用户终端的寻呼，提高网络部署的灵活性。
第九方面提供了一种用户终端的寻呼方法，包括：
第一移动性管理实体MM接收会话管理实体SM发送的携带网络注册标识的下行数据通知消息；
第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息；
第一MM接收UE的寻呼响应消息，并向SM发送用户面建立请求消息，以便SM建立UE与用户面功能实体UPF之间的用户面传输路径。
上述方案基于网络切片系统架构SM消息经过MM转发并实现对用户终端的寻呼过程，提高网络部署的灵活性。
第十方面提供了一种用户终端的寻呼方法，包括：
会话管理实体SM向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；
若接收到第一MM向SM发送的寻呼响应消息，SM根据寻呼响应消息对UE进行寻呼并建立UE与用户面功能实体UPF之间的用户面传输路径，寻呼响应消息包括用户终端UE的位置信息。
第十一方面提供了一种用户终端的寻呼方法，包括：
会话管理实体SM向第一移动性管理实体MM发送携带网络注册标识的下行数据通知消息以使第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收UE的寻呼响应消息后，向SM发送用户面建立请求消息；
若SM接收到第一MM发送的用户面建立请求消息，SM建立UE与用户面功能实体UPF之间的用户面传输路径。
第十二方面提供了一种第一移动性管理实体MM，包括：
获取单元，用于获取用户终端UE的会话信息；
选择单元，用于根据会话信息为UE选择会话管理实体SM，SM用于管理UE 的会话建立过程；
标识单元，用于为UE分配网络注册标识，网络注册标识用于识别为UE服务的第一MM和SM。
可选的，上述选择单元，还用于根据预先配置信息为UE选择会话管理实体SM，SM用于管理UE的会话建立过程。
第十二方面提供了一种第一移动性管理实体MM，包括：
接收单元，用于接收用户终端UE发送的附着请求，附着请求携带UE的会话信息，UE的会话信息包括第一类会话信息和第二类会话信息，第一类会话信息用于选择第二MM，第二类会话信息用于选择会话管理实体SM；
选择单元，用于根据第一类会话信息选择第二MM；
发送单元，用于向第二MM发送第二类会话信息，以使第二MM根据第二会话信息为UE选择SM。
第十三方面提供了一种第一移动性管理实体MM，包括：
获取单元，用于获取用户终端UE的会话信息；
标识单元，用于为UE分配和发送第一网络注册标识，第一网络注册标识包括MM标识和UE临时标识，用于识别为UE服务的第一MM；
发送单元，用于向无线接入网络RAN发送会话管理实体SM选择辅助信息以使RAN根据SM选择辅助信息选择SM，SM用于为UE分配第二网络注册标识并管理UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
第十四方面提供了一种无线接入网络RAN，包括：
获取单元，用于获取会话管理实体SM选择辅助信息；
选择单元，用于根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
第十五方面提供了一种会话管理实体SM，包括：
获取单元，用于获取用户终端UE的会话建立消息，会话建立消息携带用户终端UE的会话信息，用于建立UE与用户面功能实体UPF之间的用户面传输路径；
选择单元，用于根据会话信息为UE选择用户面功能实体UPF；
建立单元，用于建立UE和UPF之间的用户面传输路径。
第十六方面提供了一种会话管理实体SM，包括：
获取单元，用于获取用户终端UE通过无线接入网络RAN发送的会话建立消息；
选择单元，用于根据所述会话建立消息携带的所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径；
标识单元，用于根据所述会话建立消息为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
第十七方面提供了一种用户终端UE，包括：
获取单元，用于获取网络注册标识；
发送单元，用于根据网络注册标识向会话管理实体SM发送会话建立消息以使SM管理UE的会话建立过程。
第十八方面提供了一种第一移动性管理实体MM，包括：
接收单元，用于接收会话管理实体SM发送的携带网络注册标识的寻呼信息请求；
发送单元，用于向SM发送寻呼响应消息，寻呼响应消息包括UE的位置信息，以使SM根据寻呼响应消息对UE进行寻呼并建立UE与用户面功能实体UPF之间的用户面传输路径。
第十九方面提供了一种第一移动性管理实体MM，包括：
接收单元，用于接收会话管理实体SM发送的携带网络注册标识的下行数据通知消息；
发送单元，用于通过无线接入网络RAN向用户终端UE发送寻呼消息；
所述接收单元，还用于接收UE的寻呼响应消息；
所述发送单元，还用于向SM发送用户面建立请求消息，以便SM建立UE与用户面功能实体UPF之间的用户面传输路径。
第二十方面提供了一种会话管理实体SM，包括：
发送单元，用于向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；
建立单元，用于若接收到第一MM向SM发送的寻呼响应消息，根据寻呼响应消息对UE进行寻呼并建立UE与用户面功能实体UPF之间的用户面传输路径，寻呼响应消息包括用户终端UE的位置信息。
第二十一方面提供了一种会话管理实体SM，包括：
发送单元，用于向第一移动性管理实体MM发送携带网络注册标识的下行数据通知消息以使第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收UE的寻呼响应消息后，向SM发送用户面建立请求消息；
建立单元，用于若SM接收到第一MM发送的用户面建立请求消息，建立UE与用户面功能实体UPF之间的用户面传输路径。
第二十二方面提供了一种第一移动性管理实体MM，第一MM包括处理器和存储器，其中，存储器中存储一组程序，且处理器用于调用存储器中存储的程序，使得设备执行第一方面、第二方面、第三方面、第八方面、第九方面的部分或全部方法。
第二十三方面提供了一种无线接入网络RAN，RAN包括处理器和存储器，其中，存储器中存储一组程序，且处理器用于调用存储器中存储的程序，使得设备执行第四方面的部分或全部方法。
第二十四方面提供了一种会话管理实体SM，SM包括处理器和存储器，其中，存储器中存储一组程序，且处理器用于调用存储器中存储的程序，使得设备执行第五方面、第六方面的部分或全部方法。
第二十五方面提供了一种用户终端UE，UE包括处理器和存储器，其中，存储器中存储一组程序，且处理器用于调用存储器中存储的程序，使得设备执行第七方面的部分或全部方法。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1a为本发明实施例中的一种基于网络切片的系统架构示意图；
图1b为本发明实施例中的另一种基于网络切片的系统架构示意图；
图2为本发明实施例中的一种用户终端的附着方法的流程示意图；
图3为本发明实施例中的另一种用户终端的附着方法的流程示意图；
图4为本发明实施例中的又一种用户终端的附着方法的流程示意图；
图5为本发明实施例中的又一种用户终端的附着方法的流程示意图；
图6为本发明实施例中的又一种用户终端的附着方法的流程示意图；
图7为本发明实施例中的又一种用户终端的附着方法的流程示意图；
图8为本发明实施例中的一种用户终端的寻呼流程示意图；
图9为本发明实施例中的又一种用户终端的寻呼流程示意图；
图10为本发明实施例中的第一MM的模块化示意图；
图11为本发明实施例中的第一MM的结构示意图；
图12为本发明实施例中的RAN的模块化示意图；
图13为本发明实施例中的RAN的结构示意图；
图14为本发明实施例中的SM的模块化示意图；
图15为本发明实施例中的SM的结构示意图；
图16为本发明实施例中的UE的模块化示意图；
图17为本发明实施例中的UE的结构示意图。
具体实施方式
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
一个网络切片包括控制面功能实体(control plane function，CPF)和用户面功能实体(user plane function，UPF)。其中，CPF实体主要完成设备接入鉴权、安全加密、位置注册等移动性管理实体(mobility management，MM)的功能，以及用户面传输路径的建立、释放和更改等会话管理实体(session management，SM)的功能；UPF实体主要完成用户面数据的路由转发等功能。请参见图1a 和图1b，图1a和图1b本发明实施例提供的两种基于网络切片的系统架构示意图。
第一种如图1a所示，多个网络切片共享一个公共移动管理实体(Common Mobility Management,CMM)，每个网络切片有单独的SM和UPF，以两个网络切片为例，第一个网络切片有SM1和UP1，第二个网络切片有SM2和UP2，无线接入网络(Radio Access Network，RAN)与CMM之间有信令接口，用户数据库与CMM之间有信令接口，用户数据库与SM1和SM2之间有信令接口，RAN与UPF1和UPF2之间有数据面接口。RAN可以与SM1和SM2之间有信令接口，也可以与SM1和SM2之间没有信令接口，而是通过CMM来中转它们之间的信令。UE可以与RAN之间有信令接口，也可以与RAN之间有数据面接口。
第二种如图1b所示，每个网络切片有单独的CPF和UPF，以两个网络切片为例，第一个网络切片有MM1、SM1和UPF1，第二个网络切片有MM2、SM2和UPF2，各个网络切片之间完全隔离，RAN与MM1和MM2之间有信令接口，RAN与UPF1和UPF2之间有数据面接口，用户数据库与MM1和MM2之间有信令接口，数据库与SM1和SM2之间有信令接口。RAN可以与SM1和SM2之间有信令接口，也可以与SM1和SM2之间没有信令接口，而是通过CMM来中转它们之间的信令。UE可以与RAN之间有信令接口，也可以与RAN之间有数据面接口。
针对上述两种系统构架，本发明实施例提供如图2～图7所述的用户终端的附着方法和图8及图9所述的用户终端的寻呼流程，具体详见各图对应的发明实施例。
请参见图1a、图1b和图2，图2为本发明实施例中的一种用户终端的附着方法的流程示意图。如图1a、图1b和图2所示，本发明实施例中的一种用户终端的附着方法可包括步骤S01～S03。
S01、第一MM获取UE的会话信息。
附着过程即UE进行业务前在网络中注册的过程，UE只有在附着成功之后，才能够接收来自网络的服务。附着过程主要需要执行如下任务：接入鉴权和加密、资源清理和注册更新、UE的会话建立。第一MM可以是如图1a中的CMM，也可以如图1b中的任意一个MM。所述会话信息包括一个或多个会话标识，所述会话 标识用于指示所述UE的业务属性，其中，业务属性可以是业务类型，如数据业务、视频业务、话音业务；也可以是业务领域，如抄表业务、车联网业务、移动宽带业务等。
在一种实施例中，第一MM作为CMM，可以接收UE发送的附着请求，所述附着请求中携带会话信息，第一MM可以获取所述附着请求中携带的所述会话信息，并依据所述会话信息选择SM。
在另一种实施例中，第一MM作为独立的默认MM，可以接收UE发送的附着请求，所述附着请求中携带一个或多个会话信息，第一MM可以获取所述附着请求中携带的所述会话信息，并依据所述会话信息选择其他的MM以传输所述附着请求，和/或根据所述会话信息选择自身相应的SM，所述其它的MM可以根据所述会话信息选择相应的SM，其中，所述默认MM是指多个独立的MM中被配置成具有与UE进行信息交互权限的MM。
在另一种实施例中，第一MM作为独立的MM，可以接收所述默认MM发送的所述会话信息，并依据所述会话信息选择相应的SM。
S02、所述第一MM根据所述会话信息为所述UE选择会话管理实体SM，所述SM用于管理所述UE的会话建立过程。
S03、所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
所述第一MM接收到所述携带会话建立消息的附着请求之后，可以根据所述附着请求选择性地完成接入鉴权、NAS安全协商和位置更新等过程，然后所述第一MM可以根据所述会话信息为所述UE选择SM，所述选择可依据预先配置的所述SM与会话信息之间的对应关系。可选的，所述第一MM可以根据预先配置信息为UE选择会话管理实体SM，所述SM用于管理UE的会话建立过程。
在一种实施例中，所述第一MM将所述附着请求转发给所选择的SM，所述SM建立所述UE和UPF之间的用户面传输路径。所述SM完成了所述UE和所述UPF之间的用户面传输路径的建立之后，向所述第一MM发送会话建立完成消息。所述第一MM接收到所述会话建立完成消息后，可以为所述UE分配网络注册标识，所述网络注册标识可以包括三部分：MM标识，可用于识别为所述UE服务的MM或CMM，可以用于RAN路由NAS消息，所述标识全网唯一；SM标识， 可用于识别为所述UE服务的SM，用于所述MM转发会话请求，所述标识全网唯一；UE临时标识，可用于区别所述网络切片下的不同的UE，所述标识相对所述网络切片唯一。其中，SM为可选存在的标识。
在另一种实施例中，所述第一MM选择SM之后，为所述UE分配分配网络注册标识，所述网络标识包括MM标识、SM标识和UE临时标识，其中，所述SM标识为可选存在的标识。所述第一MM向所述SM提供网络注册标识，标识所述UE已经通过接入鉴权，所述第一MM还向所述UE发送携带所述网络注册标识的附着接受消息，用于所述UE后续发起所述第一MM和所述SM的会话建立流程，所述UE向所述SM发送会话建立消息，所述SM根据所述会话建立消息中携带的会话信息为所述UE选择用户面功能实体UPF，并建立所述UE和所述UPF之间的用户面传输路径。在建立所述UE和所述UPF之间的用户面传输路径之后，如果长时间没有数据传输，所述UE会进入空闲状态，在这种状态下，若所述EPS无线网络接收到了用户下行数据报文或者信令时，会发起网络侧触发寻呼流程。
第一种寻呼流程包括：所述UPF接收到用户下行数据报文或者信令，向所述SM发送下行数据通知消息；所述SM会向所述第一MM发送携带所述网络注册标识的寻呼信息请求；所述第一MM向所述SM发送寻呼响应消息，所述寻呼响应消息可以包括UE标识、UE位置信息，还可以包括UE无线能力信息以及寻呼辅助信息如推荐寻呼小区、覆盖等级、当前小区身份(identification，ID)、当前寻呼次数、预计寻呼次数等；所述SM根据所述寻呼响应消息对所述UE进行寻呼，即可以向所述UPF返回下行数据确认消息，并通过所述RAN向所述UE发送所述寻呼响应消息以使所述UE向所述SM发送携带所述SM标识的寻呼响应消息，以新建所述UE与所述UPF之间的用户面传输路径。
第二种寻呼流程包括：所述SM向所述第一MM发送下行数据通知消息；所述第一MM接收到所述下行数据通知消息后，通过所述RAN向所述UE发送寻呼信息；所述第一MM接收所述UE的寻呼响应消息，并向所述SM发送用户面建立请求；所述SM根据所述用户面建立请求建立用户面，并向所述第一MM发送用户面建立响应消息，确认用户面已经建立。
由上可见，本发明实施例中，第一MM通过会话信息为UE选择SM，并通过会话建立过程和网络注册标识实现基于网络切片系统架构的用户终端的附着 过程，相比较传统的系统而言，网络切片中各部分切片和功能组合都是独立的，各功能组合可以自由灵活部署，因此可以提高网络部署的灵活性。
请参见图1a、图1b和图3，图3为本发明实施例提供的另一种用户终端的附着方法的流程示意图。如图3所示，本发明实施例提供的一种用户终端的附着方法可包括步骤S101～S105。
S101、所述UE向所述第一MM发送携带所述UE的会话信息的会话建立消息的附着请求，第一MM接收UE发送的附着请求。
本发明实施例中可应用于如图1a的应用场景下，第一MM是指CMM，所述UE向所述第一MM发送携带所述UE的会话信息的附着请求，所述第一MM接收所述UE发送的附着请求，获取所述UE的会话信息。所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性，其中，业务属性可以是业务类型，如数据业务、视频业务、话音业务；也可以是业务领域，如抄表业务、车联网业务、移动宽带业务等。第一MM可以根据实际需要可选地执行接入鉴权、非接入层(Non Access Stratum，NAS)安全协商、位置更新等一个或多个过程。
S102、所述第一MM根据所述会话信息为所述UE选择SM，并向所述SM转发所述会话建立消息。
S103、所述SM获取所述会话建立消息，根据所述会话信息为所述UE选择UPF并建立所述UE和所述UPF之间的用户面传输路径。
所述第一MM可以根据所述会话信息为所述UE选择SM，所述选择可依据预先配置的所述SM与会话信息之间的对应关系。例如预先配置会话标识(Session Identities,SID)1～4分别对应SM1～SM4，则若附着请求中携带的会话信息包括SID2，则可以选择与所述SID2相应的SM2。所述SM可以获取所述UE的会话建立消息，获得所述UE的会话信息。所述SM可以根据所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径。可选的，所述SM还可以完成业务授权、用户面路径建立、AS安全协商等过程。可选的，所述第一MM根据预先配置信息为UE选择会话管理实体SM，所述SM用于管理UE的会话建立过程。
S104、所述SM向所述第一MM发送会话建立完成消息，所述第一MM接收所述会话建立完成消息。
S105、所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识，并所述第一MM向所述UE发送携带所述网络注册标识的附着接受消息。所述SM完成建立所述UE和所述UPF之间的用户面传输路径之后，会向所述第一MM发送会话建立完成消息，当所述第一MM接收到所述会话建立完成消息后，会为所述UE分配网络注册标识，所述网络标识的具体解释可参见图2对应的实施例相关部分。
由上可见，本发明实施例中，第一MM接收UE发送的携带会话建立消息和会话信息的附着请求，然后根据会话信息选择SM，并向SM发送会话建立消息，以使SM建立UE与UPF之间的用户面传输路径，然后由第一MM分配网络注册标识，从而完成整个附着过程，通过采用第一MM、SM等各个网络实体完成各自的功能和信息交互，可以满足网络实体的灵活部署。
请参见图1a、图1b和图4，图4为本发明实施例提供的又一种用户终端的附着方法的流程示意图。如图4所示，本发明实施例提供的又一种用户终端的附着方法可包括步骤S201～S207。
S201、所述UE向所述第一MM发送携带所述UE的会话信息的附着请求，第一MM接收用户终端UE发送的附着请求。
本发明实施例中可应用于如图1a的应用场景下，第一MM是指CMM，所述UE向所述第一MM发送携带所述UE的会话信息的附着请求，所述第一MM接收所述UE发送的附着请求，获取所述UE的会话信息。所述会话信息包括一个或多个会话标识SID，所述SID用于指示所述UE的业务属性，其中，业务属性可以是业务类型，如数据业务、视频业务、话音业务；也可以是业务领域，如抄表业务、车联网业务、移动宽带业务等。第一MM可以根据实际需要可选地执行接入鉴权、非接入层NAS安全协商、位置更新等一个或多个过程。
S202、根据所述会话信息为所述UE选择会话管理实体SM。
所述第一MM可以根据所述会话信息为所述UE选择SM，所述选择可依据预先配置的所述SM与会话信息之间的对应关系。例如会话标识SID1～4分别对应SM1～SM4，则若附着请求中携带的会话信息包括SID2，则可以选择与所述SID2相应的SM2。
S203、所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识，所述第一MM向所述UE发送所述网络注册标识。所述第一MM选择了所述SM之后，还为所述UE分配网络注册标识并发送给所述UE，所述网络标识的具体解释可参见图2对应的实施例相关部分。
S204、所述第一MM向所述SM发送所述网络注册标识。
S205、所述SM管理所述UE的会话建立过程并向所述UE发送会话建立完成消息。
S206、所述UE获取网络注册标识，并根据所述网络注册标识向所述SM发送会话建立消息。
可选的，所述会话建立消息通过MM转发至SM。
S207、所述SM根据所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径。
所述第一MM可以向所述UE发送携带所述网络注册标识的附着接受消息，并向所述SM发送所述网络注册标识。所述SM接收到所述网络注册标识之后，确定所述UE已经通过接入鉴权。所述UE接收到所述网络注册标识的附着接受消息之后，可以根据所述网络注册标识向所述SM发送会话建立消息，所述SM接收到所述会话建立消息后，会根据所述会话建立消息建立所述UE与所述UPF之间的用户面传输路径，建立的具体过程可参考图3对应实施例的相关部分。可选的，所述SM还可以完成业务授权、用户面路径建立、接入层(Access Stratum，AS)安全协商等过程。
由上可见，本发明实施例中，第一MM接收UE发送的携带会话信息的附着请求，然后根据会话信息选择SM，由第一MM分配网络注册标识，并向SM和所述UE发送所述网络注册标识。UE接收到所述网络注册标识之后，向所述 SM发送会话建立消息，SM根据所述会话建立消息建立UE与UPF之间的用户面传输路径，完成整个附着过程，本发明实施例在附着消息中不携带会话建立消息的情况下，采用第一MM、SM等各个网络实体完成各自的功能和信息交互，可以满足网络实体的灵活部署。
请参见图1a、图1b和图5，图5为本发明实施例提供的又一种用户终端的附着方法的流程示意图。如图5所示，本发明实施例提供的又一种用户终端的附着方法可包括步骤S301～S305。
S301、所述UE向所述第一MM发送携带所述UE的会话信息和会话建立消息的附着请求，第一MM接收UE发送的附着请求，并获取UE的会话信息。
本发明实施例中可应用于如图1b的应用场景下，所述第一MM可以指独立的默认MM，所述默认MM是指多个独立的MM中被配置成具有与UE进行信息交互权限的MM。所述UE向第一MM发送携带所述UE的会话信息的附着请求，所述第一MM接收所述UE发送的附着请求，获取所述UE的会话信息。所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性，其中，业务属性可以是业务类型，如数据业务、视频业务、话音业务；也可以是业务领域，如抄表业务、车联网业务、移动宽带业务等。
可选的，所述UE的会话信息包括第一类会话信息和第二类会话信息，所述第一类会话信息用于选择第二MM，所述第二类会话信息用于选择会话管理实体SM，所述第一MM可以根据所述第一类会话信息选择第二MM；所述第一MM向所述第二MM发送所述第二类会话信息，以使所述第二MM根据所述第二会话信息为所述UE选择所述SM并为所述UE分配网络注册标识。
上述第一MM为默认MM，第二MM为非默认MM，当默认MM接收到携带所述UE的会话信息的附着请求后，可以根据第一类会话信息选择非默认MM，并向所述非默认MM发送第二类会话信息，可以用于所述非默认MM进行SM的选择。所述非默认MM可以完成为所述UE分配网络注册标识等附着过程。第一MM可以根据实际需要可选地执行接入鉴权、非接入层NAS安全协商、位置更新等一个或多个过程。
S302、所述第一MM根据所述会话信息为所述UE选择SM，并向所述SM转 发所述会话建立消息。
S303、所述SM获取所述会话建立消息，根据所述会话信息为所述UE选择UPF并建立所述UE和所述UPF之间的用户面传输路径。
所述第一MM根据实际需要可选地执行接入鉴权、NAS安全协商和位置更新过程之后，所述会话信息为所述UE选择SM，然后将附着请求中携带的会话建立消息转发给所述SM，所述SM根据所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径，具体解释请参见图3所述的实施例。可选的，所述SM还可以完成业务授权、用户面路径建立、AS安全协商等过程。可选的，所述第一MM可以根据预先配置信息为UE选择会话管理实体SM，所述SM用于管理UE的会话建立过程。
S304、所述SM向所述第一MM发送会话建立完成消息，所述第一MM接收所述会话建立完成消息。
S305、所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识，并向所述UE发送携带所述网络注册标识的附着接受消息。
上述步骤的具体解释请参见图3所述的实施例。
可选的，所述步骤S302～S305也可以替换为如图4所对应的步骤S202～S207。
由上可见，本发明实施例中，第一MM作为独立的默认MM可以根据接收到的会话信息选择SM，然后由第一MM分配网络注册标识并由所述SM建立UE与UPF之间的用户面传输路径，实现第一MM、第二MM、SM等各个网络实体完成各自的功能和信息交互，以满足网络实体的灵活部署。
请参见图1a、图1b和图6，图6为本发明实施例提供的又一种用户终端的附着方法的流程示意图。如图6所示，本发明实施例提供的又一种用户终端的附着方法可包括步骤S401～S407。
S401、UE向第二MM发送携带会话信息的附着请求，所述第二MM接收所述附着请求。
S402、所述第二MM向第一MM发送会话信息，所述第一MM获取所述会 话信息。
本发明实施例中可应用于如图1b的应用场景下，所述第一MM可以指独立的非默认MM，所述非默认MM是指多个独立的MM中需要通过默认MM才能与UE进行信息交互权限的MM。所述UE向默认MM即第二MM发送携带所述UE的会话信息的附着请求，所述第二MM接收所述UE发送的附着请求并根据所述UE的会话信息确定对应的第一MM即非默认MM，然后向所述默认MM非默认MM发送会话信息。例如图6中，第二MM为MM1，第一MM为MM2，当MM1接收到UE发送的附着请求，所述MM1可以根据附着请求中的第一类会话信息选择其它的MM，如根据第一会话信息选择MM2，所述MM2还可以根据附着请求中的第二类会话信息选择自身对应的SM。
S403、所述第一MM根据所述会话信息为所述UE选择会话管理实体SM，并向所述SM转发所述会话建立消息。
S404、所述SM获取所述会话建立消息，根据所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径。
S405、所述SM向所述第一MM发送会话建立完成消息，所述第一MM接收所述会话建立完成消息。
S406、所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识，并通过所述第二MM向所述UE发送携带所述网络注册标识的附着接受消息。
上述步骤的具体解释请参见图3所述的实施例。
可选的，所述步骤S404～S407也可以替换为如图4所对应的步骤S202～S207。
由上可见，本发明实施例中，第一MM作为独立的非默认MM可以根据第二MM发送的会话信息选择SM，然后由第一MM分配网络注册标识并由所述SM建立UE与UPF之间的用户面传输路径，可以实现第一MM、第二MM、SM等各个网络实体完成各自的功能和信息交互，以满足网络实体的灵活部署。
请参见图1a、图1b和图7，图7为本发明实施例提供的又一种用户终端的附着方法的流程示意图。如图7所示，本发明实施例提供的又一种用户终端的附着方 法可包括步骤S501～S506。
S501、用户终端UE向第一MM发送携带UE的会话信息的附着请求消息，第一MM获取所述附着请求消息中的会话信息。
本发明实施例中可应用于如图1a或1b的应用场景下，第一MM可以指CMM、默认MM，所述默认MM是指多个独立的MM中被配置成具有与UE进行信息交互权限的MM。当第一MM为CMM或默认MM时，UE可以直接向第一MM发送携带UE的会话信息的附着请求消息。第一MM获取所述附着请求消息中的会话信息。可选的，当所述第一MM为非默认MM时，所述非默认MM是指多个独立的MM中需要通过默认MM才能与UE进行信息交互权限的MM，所述用户终端UE会向第二MM即默认MM发送携带UE的会话信息的附着请求消息，然后由所述第二MM向所述第一MM发送会话信息。第一MM可以根据实际需要可选地执行接入鉴权、非接入层NAS安全协商、位置更新等一个或多个过程。
S502、所述第一MM为所述UE分配和发送第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，用于识别为所述UE服务的所述第一MM。
第一MM可以为所述UE分配第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，其中，所述MM标识用于识别为所述UE服务的MM，如传输第一MM相关的NAS消息，所述标识全网唯一，所述UE临时标识用于MM区别不同的UE，相对所述每个MM切片唯一。
S503、所述第一MM向无线接入网络RAN发送SM选择辅助信息。无线接入网络RAN获取会话管理实体SM选择辅助信息，所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
所述SM选择辅助信息可以由所述第一MM根据UE提供的所述会话信息生成，也可以根据预先配置在所述第一MM的信息生成。所述SM选择辅助信息包括了一个SM列表以及每个SM服务的会话类型(用会话标识SID表示不同的会话类型)，例如：SM1：SID1，SID2；SM2：SID3；SM3：SID4，SID5等。 SM选择辅助信息也可以是一个SID列表以及对应提供服务的SM，例如：SID1：SM1，SM2；SID2：SM3；SID3：SM4，SM5等。
在另一种实施例中，所述第一MM可以向所述UE发送携带所述SM选择辅助信息和所述第一网络注册标识的附着接受消息。所述UE可以向所述RAN发起会话建立消息，所述会话建立消息携带有SM选择指示信息，所述SM选择指示信息可以包括会话信息，用于指示所述UE请求的会话类型，还可以包括所述SM选择辅助信息。所述RAN可以根据所述UE发送的所述SM选择辅助信息，为UE选择一个恰当的SM为其服务。
在另一实施例中，所述第一MM可以将所述SM选择辅助信息配置于所述RAN中，所述RAN可以获取预先配置的所述SM选择辅助信息。
S504、会话管理实体SM获取用户终端UE通过无线接入网络RAN发送的会话建立消息，所述会话建立消息携带所述会话信息。
S505、所述SM根据所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径。
可选的，所述SM还可以完成业务授权、用户面路径建立、AS安全协商等过程。
步骤S505请参考图3发明实施例中步骤S103的具体解释。
S506、所述SM根据所述会话建立消息为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
所述RAN向所述SM发送会话建立消息，然后所述SM根据所述会话建立消息，为所述UE分配第二网络注册标识，其中第二网络注册标识包括SM标识和UE临时标识，其中，所述SM标识用于识别为所述UE服务的所述SM，可以用于RAN路由相关的NAS消息，全网唯一，所述UE临时标识用于SM区别不同的UE，相对所述每个MM切片唯一。
由上可见，本发明实施例中，UE向第一MM发送携带UE的会话信息的附着请求消息，第一MM获取所述附着请求消息中的会话信息，第一MM为所述UE分配和发送第一网络注册标识，并向无线接入网络RAN发送SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，所述SM获取所述会话建立消息， 为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径，最后根据所述会话建立消息为UE分配第二网络注册标识，本发明实施例采用第一MM、SM、RAN等各个网络实体完成各自的功能和信息交互，可以满足网络实体的灵活部署。
请参见图8为本发明实施例提供的一种用户终端的寻呼流程示意图。如图8所示，本发明实施例提供的一种用户终端的寻呼方法可包括步骤S601～S607。
S601、UPF接收到用户下行数据报文或者信令，向SM发送下行数据通知消息；
S602、所述SM接收所述下行数据通知消息，会向所述第一MM发送携带所述网络注册标识的寻呼信息请求；
S603、所述第一MM根据所述寻呼信息请求向所述SM发送寻呼响应消息，所述寻呼响应消息可以包括UE标识、UE位置信息，还可以包括UE无线能力信息以及寻呼辅助信息如推荐寻呼小区、覆盖等级、当前小区ID、当前寻呼次数、预计寻呼次数等；
S604、所述SM根据所述寻呼响应消息对所述UE进行寻呼，即可以向所述UPF返回下行数据确认消息；
S605、所述SM通过所述RAN向所述UE发送所述寻呼消息；
S606、所述UE向所述SM发送携带所述SM标识的寻呼响应消息；
S607、建立或新建所述UE与所述UPF之间的用户面传输路径。
本发明实施例是基于网络切片系统架构SM消息不经过MM转发并实现用户终端的寻呼过程，提高网络部署的灵活性。
请参见图9为本发明实施例提供的另一种用户终端的寻呼流程示意图。如图9所示，本发明实施例提供的又一种用户终端的寻呼方法可包括步骤S701～S706。
S701、UPF接收到用户下行数据报文或者信令，通过SM向第一MM发送下行数据通知消息；
S702、所述第一MM接收到所述下行数据通知消息后，通过RAN向所述UE发送寻呼信息；
S703、所述UE向所述第一MM发送寻呼响应消息，所述第一MM接收所述寻呼响应消息；
S704、所述第一MM向所述SM发送用户面建立请求；
S705、所述SM根据所述用户面建立请求建立或新建所述UE与所述UPF之间的用户面传输路径；
S706、所述SM向所述第一MM发送用户面建立响应消息，确认用户面已经建立。
本发明实施例是，基于网络切片系统架构SM消息经过MM转发并实现用户终端的寻呼过程，提高网络部署的灵活性。
请参见图10，图10为本发明实施例提供的第一MM的模块化示意图，如图10所示，所述第一MM可以包括：获取单元11、选择单元12和分配单元13，其中：
获取单元11，用于获取用户终端UE的会话信息；
选择单元12，用于根据所述会话信息为所述UE选择会话管理实体SM，所述SM用于管理所述UE的会话建立过程；
标识单元13，用于为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
可选的，所述选择单元12还可以根据预先配置信息为UE选择会话管理实体SM，所述SM用于管理UE的会话建立过程。
可选的，所述第一MM还包括接收单元14；
接收单元14，用于接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息。
可选的，所述获取单元11具体用于：
获取第二MM发送的会话信息，所述会话信息由所述第二MM从接收到的用户终端UE发送的附着请求中获得。
可选的，所述附着请求还携带会话建立消息；所述第一MM还包括转发单元15；
所述转发单元15，用于向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息建立所述UE与用户面功能实体UPF之间的用户面传输路径并 向所述第一MM发送会话建立完成消息；
所述接收单元14，用于接收所述会话建立完成消息。
可选的，所述第一MM还包括发送单元16；
所述发送单元16，用于向所述UE发送携带所述网络注册标识的附着接受消息。
可选的，所述接收单元14，还用于接收所述第二MM发送的会话建立消息，所述会话建立消息是由所述第二MM从所述附着请求中获得；
所述转发单元15，还用于向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息为所述UE建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；
所述接收单元14，还用于接收所述SM发送的会话建立完成消息。
可选的，所述发送单元16，还用于向所述第二MM发送所述网络注册标识以使所述第二MM向所述UE发送携带所述网络注册标识的附着接受消息。
可选的，所述发送单元16，还用于向所述UE发送所述网络注册标识，以使所述UE向所述SM发送携带所述网络注册标识的会话建立消息；向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
可选的，所述发送单元16，还用于向所述第二MM发送所述网络注册标识以使所述UE根据所述第二MM发送携带所述网络注册标识的附着接受消息向所述SM发送携带网络注册标识的会话建立消息；向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
可选的，所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识。
可选的，所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性。
可选的，所述接收单元14，用于接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息，所述UE的会话信息包括第一类会话信息和第二类会话信息，所述第一类会话信息用于选择第二MM，所述第二类会话信息用于选择会话管理实体SM；
所述选择单元12，用于根据所述第一类会话信息选择第二MM；
所述发送单元16，用于向所述第二MM发送所述第二类会话信息，以使所述第二MM根据所述第二会话信息为所述UE选择所述SM。
可选的，所述获取单元11，用于获取用户终端UE的会话信息；
所述标识单元13，用于为所述UE分配和发送第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，用于识别为所述UE服务的所述第一MM；
所述发送单元16，用于向无线接入网络RAN发送会话管理实体SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
可选的，所述发送单元16具体用于：向所述UE发送携带所述SM选择辅助信息和所述第一网络注册标识的附着接受消息，以使所述UE向无线接入网络RAN发送携带所述SM选择辅助信息的会话建立消息以使所述RAN根据所述SM选择辅助信息选择SM。
可选的，所述接收单元14，还用于接收所述SM发送的携带所述网络注册标识的寻呼信息请求；
所述发送单元16，还用于向所述SM发送寻呼响应消息，所述寻呼响应消息包括UE的位置信息，还可以包括UE无线能力信息，以使所述SM根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径。
可选的，所述接收单元14，还用于接收所述SM发送的携带所述网络注册标识的下行数据通知消息；
所述发送单元16，还用于通过无线接入网络RAN向所述UE发送寻呼消息；
所述接收单元14，还用于接收所述UE的寻呼响应消息；
所述发送单元16，还用于向所述SM发送用户面建立请求消息，以便所述SM建立所述UE与用户面功能实体UPF之间的用户面传输路径。
上述各单元的具体解释请参见图2～图9对应的方法实施例。
请参见图11，图11为本发明实施例提供的第一MM的结构示意图，如图 11所示，所述第一MM1000可以包括处理器1001和通信接口1002，其中处理器1001和通信接口1002相连，如通过通信总线1003相连。所述处理器1001可以是中央处理器(central processing unit，CPU)。通信接口1002可以是无线通信接口、有线通信接口或二者的组合。
所述第一MM还可以包括存储器1004。所述存储器1004可以包括易失性存储器如随机存取存储器(random-access memory，RAM)；存储器还可以包括非易失性存储器如只读存储器(read-only memory，ROM)、快闪存储器、硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器1004还可以包括上述种类的存储器的任意组合。如果处理器1002包括CPU，存储器还可以存储程序代码，并将该程序代码传输给CPU，以使得CPU根据程序代码的指示实现本发明实施例。
所述处理器1001用于执行获取用户终端UE的会话信息；
所述处理器1001还用于执行根据所述会话信息为所述UE选择会话管理实体SM，所述SM用于管理所述UE的会话建立过程；
所述处理器1001还用于执行为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
在一个实施例中，所述处理器1001还用于根据预先配置信息为UE选择会话管理实体SM，所述SM用于管理UE的会话建立过程。
在一个实施例中，所述处理器1001还执行接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息。
在一个实施例中，所述处理器1001执行获取第二MM发送的会话信息，所述会话信息由所述第二MM从接收到的用户终端UE发送的附着请求中获得。
在一个实施例中，所述附着请求还携带会话建立消息；所述处理器1001还执行向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；接收所述会话建立完成消息。
在一个实施例中，所述处理器1001还执行向所述UE发送携带所述网络注册标识的附着接受消息。
在一个实施例中，所述处理器1001还执行接收所述第二MM发送的会话建 立消息，所述会话建立消息是由所述第二MM从所述附着请求中获得；向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息为所述UE建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；接收所述SM发送的会话建立完成消息。
在一个实施例中，所述处理器1001还执行向所述UE发送所述网络注册标识，以使所述UE向所述SM发送携带所述网络注册标识的会话建立消息；向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
在一个实施例中，所述处理器1001还执行向所述第二MM发送所述网络注册标识以使所述UE根据所述第二MM发送携带所述网络注册标识的附着接受消息向所述SM发送携带网络注册标识的会话建立消息；向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
所述处理器1001还可以根据实际需要可选地执行接入鉴权、非接入层NAS安全协商、位置更新等一个或多个过程。
在一个实施例中，所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识。
在一个实施例中，所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性。
在一个实施例中，所述处理器1001还执行接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息，所述UE的会话信息包括第一类会话信息和第二类会话信息，所述第一类会话信息用于选择第二MM，所述第二类会话信息用于选择会话管理实体SM；根据所述第一类会话信息选择第二MM；向所述第二MM发送所述第二类会话信息，以使所述第二MM根据所述第二会话信息为所述UE选择所述SM。
在一个实施例中，所述处理器1001还执行获取用户终端UE的会话信息；为所述UE分配和发送第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，用于识别为所述UE服务的所述第一MM；向无线接入网络RAN发送会话管理实体SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的 所述SM。
在一个实施例中，所述处理器1001执行接收用户终端UE的会话建立消息，所述会话建立消息携带用户终端UE的会话信息，用于建立所述UE与用户面功能实体UPF之间的用户面传输路径；根据所述会话信息为所述UE选择用户面功能实体UPF；建立所述UE和所述UPF之间的用户面传输路径。
在一个实施例中，所述处理器1001还执行接收所述SM发送的携带所述网络注册标识的寻呼信息请求；向所述SM发送寻呼响应消息，所述寻呼响应消息包括UE的位置信息，还可以包括UE无线能力信息，以使所述SM根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径。
上述执行步骤的具体解释请参见图2～图9对应的方法实施例。
请参见图12，图12为本发明的RAN的模块化示意图，如图12所示，所述RAN可以包括：获取单元21和选择单元22。
所述获取单元21，用于获取会话管理实体SM选择辅助信息；
所述选择单元22，用于根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
可选的，所述获取单元具体用于：
获取第一MM发送的会话管理实体SM选择辅助信息，所述SM选择辅助信息是由用户终端UE的会话信息所生成；或，获取所述UE发送的携带所述SM选择辅助信息的会话建立消息，所述SM选择辅助信息是由所述第一MM向所述UE发送的附着接受消息中所携带；或，获取预先配置的会话管理实体SM选择辅助信息。
上述执行步骤的具体解释请参见图2～图9对应的方法实施例。
请参见图13，图13为本发明实施例提供的RAN的结构示意图，如图13所示，所述RAN2000可以包括处理器2001和通信接口2002，其中处理器2001和通信接口2002相连，如通过通信总线2003相连。所述处理器2001可以是中央 处理器(central processing unit，CPU)。通信接口2002可以是无线通信接口、有线通信接口或二者的组合。
所述第一MM还可以包括存储器2004。所述存储器2004可以包括易失性存储器如随机存取存储器(random-access memory，RAM)；存储器还可以包括非易失性存储器如只读存储器(read-only memory，ROM)、快闪存储器、硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器2004还可以包括上述种类的存储器的任意组合。如果处理器1002包括CPU，存储器还可以存储程序代码，并将该程序代码传输给CPU，以使得CPU根据程序代码的指示实现本发明实施例。
所述处理器2001用于获取会话管理实体SM选择辅助信息；
所述处理器2001还用于根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
在一个实施例中，所述处理器2001具体用于获取第一MM发送的会话管理实体SM选择辅助信息，所述SM选择辅助信息是由用户终端UE的会话信息所生成；或，获取所述UE发送的携带所述SM选择辅助信息的会话建立消息，所述SM选择辅助信息是由所述第一MM向所述UE发送的附着接受消息中所携带；或，获取预先配置的会话管理实体SM选择辅助信息。
上述执行步骤的具体解释请参见图2～图9对应的方法实施例。
请参见图14，图14为本发明的SM的模块化示意图，如图14所示，所述SM可以包括：获取单元31、选择单元32和建立单元33。
所述获取单元31，用于获取用户终端UE的会话建立消息，所述会话建立消息携带用户终端UE的会话信息，用于建立所述UE与用户面功能实体UPF之间的用户面传输路径；
所述选择单元32，用于根据所述会话信息为所述UE选择用户面功能实体UPF；
所述建立单元33，用于建立所述UE和所述UPF之间的用户面传输路径。
可选的，所述会话建立消息是从第一移动管理实体MM、第二MM或用户 终端UE获取。
可选的，所述SM可以包括获取单元31、选择单元32和标识单元33；
所述获取单元31，用于获取用户终端UE通过无线接入网络RAN发送的会话建立消息；
所述选择单元32，用于根据所述会话建立消息携带的所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径；
所述标识单元33，用于根据所述会话建立消息为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
可选的，所述SM可以包括获取单元31和发送单元34；
所述获取单元31，用于获取网络注册标识；
发送单元34，用于根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程。
所述发送单元34，还用于向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
可选的，所述SM可以包括发送单元34和建立单元33；
所述发送单元34，用于向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；
所述建立单元33，用于若接收到所述第一MM向所述SM发送的寻呼响应消息，根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径，所述寻呼响应消息包括用户终端UE的位置信息。
可选的，所述SM可以包括发送单元34和建立单元33；
所述发送单元34，用于向第一移动性管理实体MM发送携带所述网络注册标识的下行数据通知消息以使所述第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收所述UE的寻呼响应消息后，向所述SM发送用户面建立请求消息；
所述建立单元33，用于若所述SM接收到所述第一MM发送的用户面建立请求消息，建立所述UE与用户面功能实体UPF之间的用户面传输路径。
上述各单元的具体解释可参考图2～图9对应的方法实施例。
请参见图15，图15是本发明实施例公开的SM3000的结构示意图。如图15所示，所述SM3000可以包括处理器2001和通信接口3002，其中处理器3001和通信接口3002相连，如通过通信总线3003相连。所述处理器3001可以是CPU。通信接口2002可以是无线通信接口、有线通信接口或二者的组合。
所述SM还可以包括存储器3004。所述存储器3004可以包括易失性存储器如RAM；存储器还可以包括非易失性存储器如ROM、快闪存储器、HDD或SSD；存储器2004还可以包括上述种类的存储器的任意组合。如果处理器3002包括CPU，存储器还可以存储程序代码，并将该程序代码传输给CPU，以使得CPU根据程序代码的指示实现本发明实施例。
所述处理器3001用于执行获取用户终端UE的会话建立消息，所述会话建立消息携带用户终端UE的会话信息，用于建立所述UE与用户面功能实体UPF之间的用户面传输路径；
所述处理器3001还用于执行根据所述会话信息为所述UE选择用户面功能实体UPF。
所述处理器3001还用于执行建立所述UE和所述UPF之间的用户面传输路径。
在一个实施例中，所述会话建立消息是从第一移动管理实体MM、第二MM或用户终端UE获取。
在一个实施例中，所述处理器3001用于获取用户终端UE通过无线接入网络RAN发送的会话建立消息；根据所述会话建立消息携带的所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径；根据所述会话建立消息为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
在一个实施例中，所述处理器3001还用于获取网络注册标识；根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程；向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
在一个实施例中，所述处理器3001还用于向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；若接收到所述第一MM向所述SM发送的寻呼响应消息，根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径，所述寻呼响应消息包括用户终端UE的位置信息。
在一个实施例中，所述处理器3001还用于向第一移动性管理实体MM发送携带所述网络注册标识的下行数据通知消息以使所述第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收所述UE的寻呼响应消息后，向所述SM发送用户面建立请求消息；若所述SM接收到所述第一MM发送的用户面建立请求消息，建立所述UE与用户面功能实体UPF之间的用户面传输路径。
上述执行步骤的具体解释请参见图2～图9对应的方法实施例。
请参见图16，图16是本发明实施例公开的UE的模块化示意图。如图14所示，所述UE包括：获取单元41和发送单元42；
所述获取单元41，用于获取网络注册标识；
所述发送单元42，用于根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程。
可选的，所述发送单元42，还用于向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
上述各单元的具体解释可参考图2～图9对应的方法实施例。
请参见图17，图17是本发明实施例公开的用户终端UE4000的结构示意图。如图15所示，所述UE4000可以包括处理器4001和通信接口4002，其中处理器4001和通信接口4002相连，如通过通信总线4003相连。所述处理器4001可以是CPU。通信接口4002可以是无线通信接口、有线通信接口或二者的组合。
所述UE还可以包括存储器4004。所述存储器4004可以包括易失性存储器如RAM；存储器还可以包括非易失性存储器如ROM、快闪存储器、HDD或SSD；存储器4004还可以包括上述种类的存储器的任意组合。如果处理器4002包括 CPU，存储器还可以存储程序代码，并将该程序代码传输给CPU，以使得CPU根据程序代码的指示实现本发明实施例。
所述处理器4001用于执行获取网络注册标识；
所述处理器4001还用于执行根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程。
在一个实施例中，所述处理器4001还用于向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
上述执行步骤的具体解释请参见图2～图9对应的方法实施例。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令处理器完成，所述的程序可以存储于计算机可读存储介质中，所述存储介质可以是随机存取存储器、只读存储器、快闪存储器、硬盘、固态硬盘、磁带(magnetic tape)，软盘(floppy disk)，光盘(optical disc)或其任意组合。
以上所述，仅为本发明较佳的具体实现，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (54)

  1. 一种用户终端的附着方法，其特征在于，包括：
    第一移动性管理实体MM获取用户终端UE的会话信息；
    所述第一MM根据所述会话信息为所述UE选择会话管理实体SM，所述SM用于管理所述UE的会话建立过程；
    所述第一MM为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
  2. 根据权利要求1所述的方法，其特征在于，所述第一MM获取UE的会话信息之前，还包括：
    第一移动性管理实体MM接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息。
  3. 根据权利要求1所述的方法，其特征在于，所述第一MM获取UE的会话信息，包括：
    第一MM获取第二MM发送的会话信息，所述会话信息由所述第二MM从接收到的用户终端UE发送的附着请求中获得。
  4. 根据权利要求2所述的方法，其特征在于，所述附着请求还携带会话建立消息；所述第一MM根据所述会话信息为所述用户终端选择SM之后，还包括：
    所述第一MM向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；
    所述第一MM接收所述会话建立完成消息并执行所述第一MM为所述UE分配网络注册标识的步骤。
  5. 根据权利要求4所述的方法，其特征在于，所述第一MM为所述UE分配 网络注册标识之后，还包括：
    所述第一MM向所述UE发送携带所述网络注册标识的附着接受消息。
  6. 根据权利要求3所述的方法，其特征在于，所述第一MM根据所述会话信息为所述用户终端选择SM之前，还包括：
    第一MM接收所述第二MM发送的会话建立消息，所述会话建立消息是由所述第二MM从所述附着请求中获得；
    所述第一MM根据所述会话信息为所述用户终端选择SM之后，还包括：
    所述第一MM向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息为所述UE建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；
    所述第一MM接收所述SM发送的会话建立完成消息并执行所述第一MM为所述UE分配网络注册标识的步骤。
  7. 根据权利要求6所述的方法，其特征在于，所述第一MM为所述UE分配网络注册标识之后，还包括：
    所述第一MM向所述第二MM发送所述网络注册标识以使所述第二MM向所述UE发送携带所述网络注册标识的附着接受消息。
  8. 根据权利要求2所述的方法，其特征在于，所述第一MM为所述UE分配网络注册标识之后，还包括：
    所述第一MM向所述UE发送所述网络注册标识，以使所述UE向所述SM发送携带所述网络注册标识的会话建立消息；
    所述第一MM向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
  9. 根据权利要求3所述的方法，其特征在于，所述第一MM为所述UE分配网络注册标识之后，还包括：
    所述第一MM向所述第二MM发送所述网络注册标识，以使所述UE根据所述 第二MM发送携带所述网络注册标识的附着接受消息向所述SM发送携带所述网络注册标识的会话建立消息；
    所述第一MM向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
  10. 根据权利要求1-9任意一项所述的方法，其特征在于，所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识。
  11. 根据权利要求1-10任意一项所述的方法，其特征在于，所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性。
  12. 一种用户终端的附着方法，其特征在于，包括：
    第一移动管理实体MM接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息，所述UE的会话信息包括第一类会话信息和第二类会话信息，所述第一类会话信息用于选择第二MM，所述第二类会话信息用于选择会话管理实体SM；
    所述第一MM根据所述第一类会话信息选择第二MM；
    所述第一MM向所述第二MM发送所述第二类会话信息，以使所述第二MM根据所述第二类会话信息为所述UE选择所述SM。
  13. 一种用户终端的附着方法，其特征在于，包括：
    第一移动性管理实体MM获取用户终端UE的会话信息；
    所述第一MM为所述UE分配和发送第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，用于识别为所述UE服务的所述第一MM；
    所述第一MM向无线接入网络RAN发送会话管理实体SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  14. 根据权利要求13所述的方法，其特征在于，所述第一MM向无线接入网络RAN发送会话管理实体SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，包括：
    所述第一MM向所述UE发送携带所述SM选择辅助信息和所述第一网络注册标识的附着接受消息，以使所述UE向无线接入网络RAN发送携带所述SM选择辅助信息的会话建立消息以使所述RAN根据所述SM选择辅助信息选择SM。
  15. 一种用户终端的附着方法，其特征在于，包括：
    无线接入网络RAN获取会话管理实体SM选择辅助信息；
    所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  16. 根据权利要求15所述的方法，其特征在于，所述无线接入网络RAN获得会话管理实体SM选择辅助信息，包括：
    无线接入网络RAN获取第一MM发送的会话管理实体SM选择辅助信息，所述SM选择辅助信息是由用户终端UE的会话信息所生成；或，
    无线接入网络RAN获取用户终端UE发送的携带所述SM选择辅助信息的会话建立消息，所述SM选择辅助信息是由所述第一MM向所述UE发送的附着接受消息中所携带；或，
    无线接入网络RAN获取预先配置的会话管理实体SM选择辅助信息。
  17. 一种用户终端的附着方法，其特征在于，包括：
    会话管理实体SM接收用户终端UE的会话建立消息，所述会话建立消息携带用户终端UE的会话信息，用于建立所述UE与用户面功能实体UPF之间的用户面传输路径；
    所述SM根据所述会话信息为所述UE选择用户面功能实体UPF；
    所述SM建立所述UE和所述UPF之间的用户面传输路径。
  18. 根据权利要求17所述的方法，其特征在于，所述会话建立消息是从第一移动管理实体MM、第二MM或用户终端UE获取。
  19. 一种用户终端的附着方法，其特征在于，包括：
    会话管理实体SM获取用户终端UE通过无线接入网络RAN发送的会话建立消息；
    所述SM根据所述会话建立消息携带的所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径；
    所述SM为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  20. 一种用户终端的附着方法，其特征在于，包括：
    用户终端UE获取网络注册标识；
    所述UE根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程。
  21. 根据权利要求20所述的方法，其特征在于，所述用户终端UE获取网络注册标识之前，还包括：
    用户终端UE向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
  22. 一种用户终端的寻呼方法，其特征在于，包括：
    第一移动性管理实体MM接收会话管理实体SM发送的携带网络注册标识的寻呼信息请求；
    所述第一MM向所述SM发送寻呼响应消息，所述寻呼响应消息包括用户终端UE的位置信息，以使所述SM根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  23. 一种用户终端的寻呼方法，其特征在于，包括：
    第一移动性管理实体MM接收会话管理实体SM发送的携带网络注册标识的下行数据通知消息；
    所述第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息；
    所述第一MM接收所述UE的寻呼响应消息，并向所述SM发送用户面建立请求消息，以便所述SM建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  24. 一种用户终端的寻呼方法，其特征在于，包括：
    会话管理实体SM向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；
    若接收到所述第一MM向所述SM发送的寻呼响应消息，所述SM根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径，所述寻呼响应消息包括用户终端UE的位置信息。
  25. 一种用户终端的寻呼方法，其特征在于，包括：
    会话管理实体SM向第一移动性管理实体MM发送携带网络注册标识的下行数据通知消息以使所述第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收所述UE的寻呼响应消息后，向所述SM发送用户面建立请求消息；
    若所述SM接收到所述第一MM发送的用户面建立请求消息，所述SM建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  26. 一种第一移动性管理实体MM，其特征在于，包括：
    获取单元，用于获取用户终端UE的会话信息；
    选择单元，用于根据所述会话信息为所述UE选择会话管理实体SM，所述SM用于管理所述UE的会话建立过程；
    标识单元，用于为所述UE分配网络注册标识，所述网络注册标识用于识别为所述UE服务的所述第一MM和所述SM。
  27. 根据权利要求26所述的第一MM，其特征在于，所述第一MM还包括：
    接收单元，用于接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息。
  28. 根据权利要求26所述的第一MM，其特征在于，所述获取单元具体用于：
    获取第二MM发送的会话信息，所述会话信息由所述第二MM从接收到的用户终端UE发送的附着请求中获得。
  29. 根据权利要求27所述的第一MM，其特征在于，所述附着请求还携带会话建立消息；所述第一MM还包括：
    转发单元，用于向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；
    接收单元，用于接收所述会话建立完成消息。
  30. 根据权利要求26所述的第一MM，其特征在于，所述第一MM还包括：
    发送单元，用于向所述UE发送携带所述网络注册标识的附着接受消息。
  31. 根据权利要求28所述的第一MM，其特征在于，
    所述接收单元，还用于接收所述第二MM发送的会话建立消息，所述会话建立消息是由所述第二MM从所述附着请求中获得；
    所述转发单元，还用于向所述SM转发所述会话建立消息，以使所述SM根据所述会话建立消息为所述UE建立所述UE与用户面功能实体UPF之间的用户面传输路径并向所述第一MM发送会话建立完成消息；
    所述接收单元，还用于接收所述SM发送的会话建立完成消息。
  32. 根据权利要求31所述的第一MM，其特征在于，
    所述发送单元，还用于向所述第二MM发送所述网络注册标识以使所述第二MM向所述UE发送携带所述网络注册标识的附着接受消息。
  33. 根据权利要求27所述的第一MM，其特征在于，
    所述发送单元，还用于向所述UE发送所述网络注册标识，以使所述UE向所述SM发送携带所述网络注册标识的会话建立消息；
    所述发送单元，还用于向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
  34. 根据权利要求28所述的第一MM，其特征在于，
    所述发送单元，还用于向所述第二MM发送所述网络注册标识以使所述UE根据所述第二MM发送携带所述网络注册标识的附着接受消息向所述SM发送携带所述网络注册标识的会话建立消息；
    所述发送单元，还用于向所述SM发送所述网络注册标识，以使所述SM管理所述UE的会话建立过程。
  35. 根据权利要求26-34任意一项所述的第一MM，其特征在于，所述网络注册标识包括MM标识和UE临时标识，或者包括MM标识、UE临时标识和SM标识。
  36. 根据权利要求26-35任意一项所述的第一MM，其特征在于，所述会话信息包括一个或多个会话标识，所述会话标识用于指示所述UE的业务属性。
  37. 一种第一移动管理实体MM，其特征在于，包括：
    接收单元，用于接收用户终端UE发送的附着请求，所述附着请求携带所述UE的会话信息，所述UE的会话信息包括第一类会话信息和第二类会话信息，所述第一类会话信息用于选择第二MM，所述第二类会话信息用于选择会话管理实体SM；
    选择单元，用于根据所述第一类会话信息选择第二MM；
    发送单元，用于向所述第二MM发送所述第二类会话信息，以使所述第二MM根据所述第二会话信息为所述UE选择所述SM。
  38. 一种第一移动管理实体MM，其特征在于，包括：
    获取单元，用于获取用户终端UE的会话信息；
    标识单元，用于为所述UE分配和发送第一网络注册标识，所述第一网络注册标识包括MM标识和UE临时标识，用于识别为所述UE服务的所述第一MM；
    发送单元，用于向无线接入网络RAN发送会话管理实体SM选择辅助信息以使所述RAN根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  39. 根据权利要求36所述的第一MM，其特征在于，所述发送单元具体用于：
    向所述UE发送携带所述SM选择辅助信息和所述第一网络注册标识的附着接受消息，以使所述UE向无线接入网络RAN发送携带所述SM选择辅助信息的会话建立消息以使所述RAN根据所述SM选择辅助信息选择SM。
  40. 一种无线接入网络RAN，其特征在于，包括：
    获取单元，用于获取会话管理实体SM选择辅助信息；
    选择单元，用于根据所述SM选择辅助信息选择SM，所述SM用于为UE分配第二网络注册标识并管理所述UE的会话建立过程，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  41. 根据权利要求40所述的RAN，其特征在于，所述获取单元具体用于：
    获取第一MM发送的会话管理实体SM选择辅助信息，所述SM选择辅助信息是由用户终端UE的会话信息所生成；或，
    获取用户终端UE发送的携带所述SM选择辅助信息的会话建立消息，所述SM选择辅助信息是由所述第一MM向所述UE发送的附着接受消息中所携带；或，
    获取预先配置的会话管理实体SM选择辅助信息。
  42. 一种会话管理实体SM，其特征在于，包括：
    获取单元，用于接收用户终端UE的会话建立消息，所述会话建立消息携带用户终端UE的会话信息，用于建立所述UE与用户面功能实体UPF之间的用户面传输路径；
    选择单元，用于根据所述会话信息为所述UE选择用户面功能实体UPF；
    建立单元，用于建立所述UE和所述UPF之间的用户面传输路径。
  43. 根据权利要求42所述的SM，其特征在于，所述会话建立消息是从第一移动管理实体MM、第二MM或用户终端UE获取。
  44. 一种会话管理实体SM，其特征在于，包括：
    获取单元，用于获取用户终端UE通过无线接入网络RAN发送的会话建立消息；
    选择单元，用于根据所述会话建立消息携带的所述会话信息为所述UE选择UPF，并建立所述UE和所述UPF之间的用户面传输路径；
    标识单元，用于为UE分配第二网络注册标识，所述第二网络注册标识包括SM标识和UE临时标识，用于识别为所述UE服务的所述SM。
  45. 一种用户终端UE，其特征在于，包括：
    获取单元，用于获取网络注册标识；
    发送单元，用于根据所述网络注册标识向会话管理实体SM发送会话建立消息以使所述SM管理所述UE的会话建立过程。
  46. 根据权利要求45所述的UE，其特征在于，
    所述发送单元，还用于向第一移动性管理实体MM发送携带所述UE的会话信息的附着请求，以使所述第一MM根据所述会话信息选择SM以及为所述UE分配网络注册标识。
  47. 一种第一移动性管理实体MM，其特征在于，包括：
    接收单元，用于接收会话管理实体SM发送的携带网络注册标识的寻呼信息请求；
    发送单元，用于向所述SM发送寻呼响应消息，所述寻呼响应消息包括UE的位置信息，以使所述SM根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  48. 一种第一移动性管理实体MM，其特征在于，包括：
    接收单元，用于接收会话管理实体SM发送的携带网络注册标识的下行数据通知消息；
    发送单元，用于通过无线接入网络RAN向用户终端UE发送寻呼消息；
    所述接收单元，还用于接收所述UE的寻呼响应消息；
    所述发送单元，还用于向所述SM发送用户面建立请求消息，以便所述SM建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  49. 一种会话管理实体SM，其特征在于，包括：
    发送单元，用于向第一移动性管理实体MM发送携带网络注册标识的寻呼信息请求；
    建立单元，用于若接收到所述第一MM向所述SM发送的寻呼响应消息，根据所述寻呼响应消息对所述UE进行寻呼并建立所述UE与用户面功能实体UPF之间的用户面传输路径，所述寻呼响应消息包括用户终端UE的位置信息。
  50. 一种会话管理实体SM，其特征在于，包括：
    发送单元，用于向第一移动性管理实体MM发送携带所述网络注册标识的下行数据通知消息以使所述第一MM通过无线接入网络RAN向用户终端UE发送寻呼消息并接收所述UE的寻呼响应消息后，向所述SM发送用户面建立请求消息；
    建立单元，用于若所述SM接收到所述第一MM发送的用户面建立请求消息，建立所述UE与用户面功能实体UPF之间的用户面传输路径。
  51. 一种第一移动性管理实体MM，其特征在于，所述第一MM包括处理器 和存储器，其中，所述存储器中存储一组程序，且所述处理器用于调用所述存储器中存储的程序，使得所述设备执行如权利要求1-15或者是24-25任一所述的方法。
  52. 一种无线接入网络RAN，其特征在于，所述RAN包括处理器和存储器，其中，所述存储器中存储一组程序，且所述处理器用于调用所述存储器中存储的程序，使得所述设备执行如权利要求16或17所述的方法。
  53. 一种会话管理实体SM，其特征在于，所述SM包括处理器和存储器，其中，所述存储器中存储一组程序，且所述处理器用于调用所述存储器中存储的程序，使得所述设备执行如权利要求18-21或者是26-27任一所述的方法。
  54. 一种用户终端UE，其特征在于，所述UE包括处理器和存储器，其中，所述存储器中存储一组程序，且所述处理器用于调用所述存储器中存储的程序，使得所述设备执行如权利要求22-23任一所述的方法。
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