WO2019128666A1 - 一种会话建立的方法及装置 - Google Patents

一种会话建立的方法及装置 Download PDF

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Publication number
WO2019128666A1
WO2019128666A1 PCT/CN2018/119418 CN2018119418W WO2019128666A1 WO 2019128666 A1 WO2019128666 A1 WO 2019128666A1 CN 2018119418 W CN2018119418 W CN 2018119418W WO 2019128666 A1 WO2019128666 A1 WO 2019128666A1
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WO
WIPO (PCT)
Prior art keywords
function entity
management function
access
session
mobility management
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PCT/CN2018/119418
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English (en)
French (fr)
Inventor
邓强
唐廷芳
Original Assignee
电信科学技术研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 电信科学技术研究院有限公司 filed Critical 电信科学技术研究院有限公司
Priority to US16/957,730 priority Critical patent/US20200374684A1/en
Priority to KR1020207020679A priority patent/KR102477014B1/ko
Priority to EP18893745.2A priority patent/EP3735029B1/en
Priority to JP2020535549A priority patent/JP7111817B2/ja
Publication of WO2019128666A1 publication Critical patent/WO2019128666A1/zh
Priority to US18/173,769 priority patent/US20230209328A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/12—Mobility data transfer between location registers or mobility servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/25—Maintenance of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/24—Interfaces between hierarchically similar devices between backbone network devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for session establishment.
  • 3GPP 3rd Generation Partnership Project
  • MME Mobility Management Entity
  • NAS Non Access Stratum
  • DRB Data Radio Bearer, Data radio bearer
  • the 5G network architecture has undergone major changes, mainly in: (1) network architecture based on serviced interfaces. Service interfaces are used between control plane network elements in 5G core networks, such as AMF (Access). And Mobility Management Function (access and mobility management functions) and SMF (Session Management Function) use a service interface; (2), MM (Mobility Management, mobility management) and SM (Session Management, Session management) separation, AMF is responsible for MM function, SMF is responsible for SM function; (3), CP (Control Plane, control plane) and UP (User Plane, user plane) are separated, User Plane Function (UPF) is user The face (UP) network element, AMF/SMF, etc.
  • AMF Access
  • MMF Mobility Management Function
  • SMF Session Management Function
  • MM Mobility Management, mobility management
  • SM Session Management, Session management
  • AMF is responsible for MM function
  • SMF is responsible for SM function
  • CP Control Plane, control plane
  • R15 defines the basic architecture and process of the 5G, including the PDU Session (Protocol Data Unit Session) establishment process, which is used to establish a User Plane connection between the terminal and the network, but the existing PDU Session is established. The process does not support the establishment of a Control Plane PDU (Control Plane Protocol Data Unit) session.
  • PDU Session Protocol Data Unit Session
  • Control Plane PDU Control Plane Protocol Data Unit
  • the method for establishing control plane session data transmission in the 4G network in the prior art is not applicable to the 5G network.
  • the invention provides a method and a device for establishing a session, which are used to solve the problem that the method for establishing session data transmission of a control plane in a 4G network in the prior art is not applicable to a 5G network.
  • the present invention provides a method for session establishment, the method comprising:
  • the access and mobility management function entity receives a session establishment request sent by the terminal;
  • the access and mobility management function entity determines to establish a control plane session for the terminal
  • the access and mobility management function entity indicates to the session management function entity to establish a control plane session for the terminal;
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum message.
  • the present invention provides another method for session establishment, the method comprising:
  • the session management function entity receives a session establishment request sent by the terminal;
  • the session management function entity receives indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal;
  • the session management function entity indicates tunnel information of downlink data transmission to the user plane function entity.
  • the present invention provides a method for session establishment, the method comprising:
  • the terminal sends a session establishment request message to the access and mobility management function entity
  • the terminal establishes a control plane session with the access and mobility management function entity
  • the terminal and the access and mobility management function entity perform data transmission through a control plane session.
  • the present invention provides a session established access and mobility management function entity, the access and mobility management function entity comprising a processor, a memory and a transceiver.
  • the processor is configured to read a program in the memory and execute:
  • the present invention provides a session-established session management functional entity including a processor, a memory, and a transceiver.
  • the processor is configured to read a program in the memory and execute:
  • the present invention provides a session establishment terminal, which includes a processor, a memory, and a transceiver.
  • the processor is configured to read a program in the memory and execute:
  • Data transmission is performed with the access and mobility management function entity through a control plane session.
  • the implementation of the present invention provides a session established access and mobility management function entity, and the access and mobility management function entity includes:
  • the first receiving module receives a session establishment request sent by the terminal
  • a first execution module configured to determine to establish a control plane session for the terminal; and indicate to the session management function entity to establish a control plane session for the terminal;
  • the transmission module is configured to perform data transmission between the terminal and the non-access stratum message.
  • the embodiment of the present invention provides a session establishment function entity for session establishment, and the session management function entity includes:
  • a second receiving module configured to receive a session establishment request sent by the terminal, and receive, by the access and mobility management function entity, indication information for establishing a control plane session for the terminal;
  • the second execution module is configured to indicate, to the user plane function entity, tunnel information of downlink data transmission.
  • the present invention provides a session establishment terminal, and the terminal includes:
  • a sending module configured to send, by the terminal, a session establishment request message to the access and mobility management function entity
  • a third execution module configured to establish a control plane session with the access and mobility management function entity
  • a second transmission module configured to perform data transmission with the access and mobility management function entity through a control plane session.
  • the present invention provides a session establishment readable storage medium, comprising program code for causing the computing device to perform an access and mobility management function entity when the program code is run on a computing device A step of the method or a step of a session management function entity, or a step of any of the methods of the method.
  • the access and mobility management function entity of the present invention After receiving the session establishment request sent by the terminal, the access and mobility management function entity of the present invention indicates to the session management function entity that a control plane session is established for the terminal, and the session management function entity indicates to the user plane function entity.
  • the tunnel information of the downlink data transmission when the data needs to be transmitted, the access and mobility management function entity and the terminal perform data transmission through the non-access stratum message. Since the access and mobility management function entity and the terminal perform data transmission through the non-access stratum message when the data needs to be transmitted in the present invention, it is suitable for transmission of control plane data in the 5G network.
  • FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a 5G network
  • FIG. 3 is a schematic structural diagram of an access and mobility management function entity according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a session management function entity according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another access and mobility management function entity according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another session management function entity according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a method for an access and mobility management function entity side according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of a method for a session management function entity side according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart diagram of a method on a session terminal side according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a complete process of data transmission between an access and mobility management function entity and a terminal through a non-access stratum mobile session management message according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of a complete process for performing downlink data transmission between an access and mobility management function entity and a terminal according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of a complete process of data transmission between a access and mobility management function entity and a terminal through a non-access stratum session management message according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of a complete process for performing downlink data transmission between a session management function entity and a terminal according to an embodiment of the present invention.
  • the system for session establishment in the embodiment of the present invention includes an access and mobility management function entity 100 and a session management function entity 101.
  • the access and mobility management function entity 100 is configured to receive a session establishment request sent by the terminal, determine to establish a control plane session for the terminal, and indicate to the session management function entity to establish a control plane session for the terminal; Incoming messages for data transmission.
  • the session management function entity 101 is configured to receive a session establishment request sent by the terminal, receive indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and indicate a tunnel for downlink data transmission to the user plane function entity. information.
  • the terminal 102 is configured to send a session establishment request message to the access and mobility management function entity, establish a control plane session with the access and mobility management function entity, and pass the control plane with the access and mobility management function entity.
  • the session performs data transfer.
  • the access and mobility management function entity after receiving the session establishment request sent by the terminal, the access and mobility management function entity indicates to the session management function entity to establish a control plane session for the terminal, and the session management function entity provides a user plane function.
  • the entity indicates the tunnel information of the downlink data transmission.
  • the access and mobility management function entity and the terminal perform data transmission through the non-access stratum message. Since the present invention requires data transmission when the data needs to be transmitted, the access and mobility management function entity and the terminal perform data transmission through the non-access stratum message, and thus are suitable for transmission of control plane data in the 5G network.
  • the embodiment of the present invention provides two methods for establishing control plane session data transmission, and a method is that the access and mobility management function entity and the terminal pass the non-access layer.
  • the mobility management message performs data transmission
  • the other method is a method for data transmission between the access and mobility management function entity and the terminal through a non-access stratum session management message.
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum mobility management message:
  • the terminal When the terminal needs to establish a session, the terminal sends a session establishment request to the access and mobility management function entity, where the session establishment request is placed in the non-access stratum message.
  • the access and mobility management function entity determines that the session type is a control plane session according to a negotiation result with the terminal in a registration process performed on the terminal. And indicating to the session management function entity an indication of establishing a control plane session for the terminal and tunnel information of the access and mobility management function entity.
  • the tunnel information of the access and mobility management function entity is used by the user plane function entity to send downlink data to the mobility management function entity.
  • the session management function entity receives the indication information of the control plane session and the tunnel information of the access and mobility management function entity sent by the access and mobility management function entity, and then indicates to the user plane function entity The tunnel information provided by the access and mobility management function entities of the downlink data transmission.
  • the session management function entity After the user plane function entity returns a reception indication response, the session management function entity indicates the quality of service information of the session to the access and mobility management function entity.
  • the access and mobility management function entity receives the quality of service information of the session indicated by the session management function entity.
  • the service quality information of the session includes tunnel information of the household function entity.
  • the user function entity tunnel information sent by the session management function entity to the access and mobility management function entity may be allocated by the session management function entity itself or may be allocated by the household function entity. And if the household function entity tunnel information is allocated by the household function entity, the household function entity needs to provide the household function entity tunnel information to the receiving management function to be provided to the session management function entity.
  • the terminal sends a non-access stratum acknowledgement message to the access and mobility management function entity.
  • control plane session establishment is completed, and the access and mobility management function entity and the terminal perform data transmission through the non-access stratum mobility management message.
  • the session management function entity determines, according to the session context information of the terminal, the session type as a control plane session, and the access and the mobile
  • the sex management function entity indicates the tunnel information of the user plane function entity corresponding to the session.
  • the access and mobility management function entity After receiving the tunnel information of the user plane function entity, the access and mobility management function entity sends its own tunnel information to the session management function entity, and the session management function entity associates the access and mobility management function entity.
  • the tunnel information is forwarded to the user plane function entity, and the downlink data may be sent to the access and mobility management function entity, and the access and mobility management function entity sends the downlink data to the terminal through the non-access stratum message.
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum session management message:
  • the terminal When the terminal needs to establish a session, the terminal sends a session establishment request to the access and mobility management function entity, where the session establishment request is placed in the non-access stratum message.
  • the access and mobility management function entity determines that the session type is a control plane session according to a negotiation result with the terminal in the registration process of the terminal. And indicating to the session management function entity an indication to establish a control plane session for the terminal.
  • the session management function entity receives the indication information of the session establishment control plane session sent by the access and mobility management function entity, and indicates the tunnel information provided by the session management function entity of the downlink data transmission to the user plane function entity. .
  • the access and mobility management function entity receives the quality of service information of the session indicated by the session management function entity.
  • the user plane function entity needs to provide the user plane function entity tunnel information to the session management function entity.
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum session management message, and the access and mobility management function entity and user plane function Data is transmitted between entities through tunnel information.
  • the terminal sends a non-access stratum acknowledgement message to the access and mobility management function entity.
  • control plane session is established, and the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum session management message, and the access and mobility management function entity and the session management function entity The transmission of non-access stratum session management messages is performed between.
  • the session management function entity determines, according to the session context information of the terminal, the session type is a control plane session, and the user plane functional entity The session management function entity tunnel information is indicated, and the downlink data can be sent to the session management function entity.
  • the session management function entity sends the downlink data to the access and mobility management function entity, and the access and mobility management function entity sends the downlink data to the terminal through the non-access stratum message.
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum session management message:
  • the terminal sends a non-access stratum request message for establishing a PDU session to the access and mobility management function entity, where the non-access stratum request message includes a PDU session ID ((identification) and PDU session establishment request.
  • the non-access stratum request message includes a PDU session ID ((identification) and PDU session establishment request.
  • the access and mobility management function entity determines that the non-access stratum request message is a message for creating a new PDU session, and according to the registration process in the terminal.
  • the result of the negotiation of the terminal determines whether a control plane session needs to be established for the terminal. If the negotiation result is Control Plane CIoT EPS optimisation, a control plane session is established for the terminal.
  • the access and mobility management function determines to send an access and mobility management function request service message to the access and mobility management function entity after the terminal establishes a control plane.
  • the request access and mobility management function entity service message includes the access and mobility management function ID, which is used to establish a PDU session ID, a PDU session establishment request, and an indication information and access for establishing a control plane session.
  • mobility management function entity tunnel information the access and mobility management function entity tunnel information is used by the user plane function entity to send downlink data to the access and mobility management function entity.
  • the access and mobility management function entity after receiving the access and mobility management function request service message, the access and mobility management function entity requests a UDM (Unified Data Management) service and acquires a PDU session from the UDM entity.
  • the access and mobility management function entity requests a PCF (Policy Control Function) service, and acquires related PCC rules of the PDU session from the PCF.
  • UDM Unified Data Management
  • PCF Policy Control Function
  • the access and mobility management function entity After the access and mobility management function entity acquires the relevant subscription information of the PDU session and the related PCC rule, the access and mobility management function entity tunnel information and packet detection (packet detection) rules are placed in the N4 session.
  • the establishment request message is sent to the selected user plane function entity.
  • the access and mobility management function entity After receiving the N4 session establishment response message sent by the user plane function entity, the access and mobility management function entity sends a user plane for the access and mobility management function entity to send the uplink data to the user plane function entity.
  • the functional entity tunnel information, the PDU session ID, and the PDU session establishment response message are sent to the access and mobility management function entity in the quality of service information of the session.
  • the access and mobility management function entity needs to perform QoS (Quality of Service) configuration when performing session establishment, the access and mobility management function entity is not known to establish configuration parameters of the QoS configuration.
  • the access and mobility management function entity is required to be provided, so the configuration parameter of the QoS configuration is also included in the N4 session establishment response message.
  • the access and mobility management function entity sends an N2 request message to the RAN (Radio Access Network), where the access and mobility management function requests the service response message to include non-access Layer information (ie PDU session ID and PDU session setup response message).
  • RAN Radio Access Network
  • non-access Layer information ie PDU session ID and PDU session setup response message
  • the RAN After receiving the N2 request message sent by the access and mobility management function entity, the RAN sends the non-access stratum information in the access and mobility management function request service response message to the terminal by using an RRC message.
  • the terminal entity After receiving the non-access layer message sent by the radio access network RAN, the terminal entity returns a non-access stratum response to establish a PDU session to the RAN through an RRC (Radio Resource Control) message. Message, at this point the terminal completes the establishment of the control plane session.
  • RRC Radio Resource Control
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access layer mobility management message.
  • the terminal is in an idle state, when there is downlink data reaching the household functional entity:
  • the user plane function entity When the user plane function entity user plane function finds that there is no path for transmitting downlink data, the user plane function entity sends a data notification request message to the access and mobility management function entity, where the message includes the PDU session ID.
  • the access and mobility management function entity determines that the session type is a control plane session according to the session context information of the terminal, and sends the session type to the access and mobility management function entity.
  • the access and mobility management function entity service request message wherein the access and mobility management function entity service request message includes a PDU session ID and the user plane function entity tunnel information.
  • the access and mobility management function entity after receiving the access and mobility management function service request message of the access and mobility management function, the access and mobility management function entity places the access and mobility management function entity tunnel information The access and mobility management function entity service request message is sent to the access and mobility management function entity.
  • the access and mobility management function entity After receiving the access and mobility management function entity tunnel information sent by the access and mobility management function entity, the access and mobility management function entity performs the access and mobility management function by using an N4 session downlink data message.
  • the entity tunnel information is sent to the user plane function entity.
  • the user plane function entity sends the received downlink data to the access and mobility management function entity by using the access and mobility management function entity tunnel information, and the access and mobility management function After receiving the downlink data sent by the user plane function entity, the entity sends a page to the terminal through the RNA.
  • the terminal After receiving the paging from the RNA transmission, the terminal sends a control plane session request to the RNA through an RRC message, and the RNA sends the control plane session request to the access and mobility management function entity. Establishing a connection between the terminal and the access and mobility management function entity.
  • the corresponding access and mobility management function entity performs encryption and integrity protection on the received downlink data, and sends the downlink data to the terminal.
  • the access and mobility management function entity sends an access and mobility management function entity service request message to the access and mobility management function entity, and the user plane function entity will receive
  • the downlink data is sent by the access and mobility management function entity tunnel information to the access and mobility management function entity, and can be executed after establishing a connection between the terminal and the access and mobility management function entity.
  • tunnel information used to send the downlink data is the access and mobility management function entity tunnel information:
  • the terminal sends non-access stratum request information for establishing a PDU session to the access and mobility management function entity, where the non-access stratum request information includes a PDU session ID and a PDU session establishment request allocated by the terminal.
  • the access and mobility management function entity determines that the non-access stratum request message is a message for creating a new PDU session, and according to the terminal registration process
  • the negotiation result of the terminal determines whether a control plane session needs to be established for the terminal. If the negotiation result is Control Plane CIoT EPS optimisation, a control plane session is established for the terminal.
  • the access and mobility management function determines to send an access and mobility management function request service message to the access and mobility management function entity after establishing a control plane session for the terminal, wherein the request access and mobility management
  • the function entity service message includes the access and mobility management function ID, which is used to establish a PDU session ID, a PDU session establishment request, and an indication information for establishing a control plane session.
  • the access and mobility management function entity after receiving the access and mobility management function request service message, the access and mobility management function entity requests the UDM service and acquires related subscription information of the PDU session from the UDM; the access and mobility The management function entity requests the PCF service and acquires the relevant PCC rules of the PDU session from the PCF.
  • the access and mobility management function entity tunnel information and the packet detection rule are sent to the N4 session establishment request message and sent to the selection.
  • User plane functional entity After the access and mobility management function entity acquires the relevant subscription information of the PDU session and the related PCC rule, the access and mobility management function entity tunnel information and the packet detection rule are sent to the N4 session establishment request message and sent to the selection.
  • User plane functional entity After the access and mobility management function entity acquires the relevant subscription information of the PDU session and the related PCC rule, the access and mobility management function entity tunnel information and the packet detection rule are sent to the N4 session establishment request message and sent to the selection.
  • User plane functional entity After the access and mobility management function entity acquires the relevant subscription information of the PDU session and the related PCC rule, the access and mobility management function entity tunnel information and the packet detection rule are sent to the N4 session establishment request message and sent to the selection.
  • User plane functional entity User plane functional entity.
  • the access and mobility management function entity After receiving the N4 session establishment response message sent by the user plane function entity, the access and mobility management function entity places the PDU session ID and the PDU session establishment response message in the access and mobility management function request service response. The message is sent to the access and mobility management function entity.
  • the access and mobility management function entity sends an N2 request message to the RAN, where the N2 request includes non-access stratum information (ie, a PDU session ID and a PDU session setup response message).
  • non-access stratum information ie, a PDU session ID and a PDU session setup response message.
  • the RAN After receiving the N2 request message sent by the access and mobility management function entity, the RAN sends the non-access stratum information in the N2 request message to the terminal by using an RRC message.
  • the terminal entity After receiving the non-access stratum message sent by the radio access network RAN, the terminal entity returns a non-access stratum response message for establishing a PDU session to the RAN through an RRC message, and completes establishing a control plane session.
  • the user plane function entity When the user plane function entity control plane needs to send data to the terminal, the user plane function entity sends, by using the access and mobility management function entity tunnel information, the access and mobility management function entity, The access and mobility management function entity sends the data to the terminal.
  • the terminal is in an idle state, when there is downlink data reaching the household functional entity:
  • the user plane function entity When the user plane function entity user plane function finds that there is no path for transmitting downlink data, the user plane function entity sends a data notification request message to the access and mobility management function entity, where the message includes the PDU session ID.
  • the access and mobility management function entity determines that the session type is a control plane session according to the session context information of the terminal, and then accesses and mobility management through the N4 session downlink data.
  • the functional entity tunnel information is sent to the user plane functional entity.
  • the access and mobility management function entity after receiving the access and mobility management function service request message of the access and mobility management function, the access and mobility management function entity places the access and mobility management function entity tunnel information The access and mobility management function entity service request message is sent to the access and mobility management function entity.
  • the access and mobility management function entity After receiving the access and mobility management function entity tunnel information sent by the access and mobility management function entity, the access and mobility management function entity sends the access and mobility management function entity tunnel information to the User plane functional entity.
  • the access and mobility management function entity after receiving the downlink data sent by the user plane function entity by using the tunnel information of the access and mobility management function entity, the access and mobility management function entity places the downlink data into access And the mobility management function entity service request is sent to the access and mobility management function entity.
  • the access and mobility management function entity After receiving the downlink data sent by the user plane function entity, the access and mobility management function entity sends a page to the terminal through the RNA.
  • the terminal After receiving the paging from the RNA transmission, the terminal sends a control plane session request to the RNA through an RRC message, and the RNA sends the Control Plane session request to the access and mobility management function entity. Establishing a connection between the terminal and the access and mobility management function entity.
  • the corresponding access and mobility management function entity performs encryption and integrity protection on the received downlink data, and sends the downlink data to the terminal.
  • an embodiment of the present invention provides a session establishment access and mobility management function entity, where the access and mobility management function entity includes a processor 300, a memory 301, and a transceiver 302.
  • the processor 300 is configured to read a program in the memory 301 and execute: receiving a session establishment request sent by the terminal; determining to establish a control plane session for the terminal; and indicating to the session management function entity to establish a control plane session for the terminal; and Data transmission between terminals is performed through non-access stratum messages.
  • the processor 300 is specifically configured to: determine, in the registration process, the session type to be a control plane session.
  • the processor 300 is further configured to: indicate, to the session management function entity, tunnel information of the access and mobility management function entity.
  • the tunnel information of the access and mobility management function entity is used by the user plane function entity to send downlink data to the tunnel information of the access and mobility management function entity.
  • the processor 300 is further configured to: receive tunnel information of a user plane function entity indicated by the session management function entity.
  • the tunnel information of the user plane function entity is used by the access and mobility management function entity to send uplink data to the tunnel information of the user plane function entity.
  • the processor 300 is further configured to: receive the quality of service information of the session indicated by the session management function entity.
  • the processor 300 is specifically configured to perform data transmission between the terminal and the non-access stratum mobility management message.
  • the processor 300 is further configured to: perform data transmission by using tunnel information between the user plane functional entity.
  • the processor 300 is specifically configured to perform data transmission between the terminal and the non-access stratum session management message.
  • the processor 300 is further configured to: perform transmission of a non-access stratum session management message with the session management function entity.
  • the processor 300 is responsible for managing the bus architecture and general processing, and the memory 301 can store data used by the processor 800 in performing operations.
  • the transceiver 302 is configured to receive and transmit data under the control of the processor 300.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 800 and various circuits of memory represented by memory 301.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 300 is responsible for managing the bus architecture and general processing, and the memory 301 can store data used by the processor 300 when performing operations.
  • the flow disclosed in the embodiment of the present invention may be applied to the processor 300 or implemented by the processor 300.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 300 or an instruction in the form of software.
  • the processor 300 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 301, and the processor 300 reads the information in the memory 301 and completes the steps of the signal processing flow in conjunction with its hardware.
  • an embodiment of the present invention provides a session establishment function management entity, where the access and mobility management function entity includes a processor 400, a memory 401, and a transceiver 402.
  • the processor 400 is configured to read a program in the memory 401 and execute: receiving a session establishment request sent by the terminal; and receiving, by the access and mobility management function entity, indication information for establishing a control plane session for the terminal;
  • the user plane function entity indicates tunnel information of downlink data transmission.
  • the processor 400 is further configured to: receive tunnel information of the access and mobility management function entity sent by the access and mobility management function entity.
  • the tunnel information of the downlink data transmission is tunnel information provided by the access and mobility management function entity, or tunnel information of the session management function entity.
  • the processor 400 is further configured to: indicate, to the access and mobility management function entity, quality of service information of the session.
  • the processor is further configured to: the session management function entity indicates, to the access and mobility management function entity, tunnel information of a user plane function entity.
  • the processor 400 is further configured to determine, according to the session context information of the terminal, that the session type is a control plane session.
  • the processor is further configured to: indicate, to the access and mobility management function entity, tunnel information of a user plane function entity corresponding to the session.
  • the processor 400 is further configured to: perform data transmission with the terminal by using a non-access stratum session management message.
  • the processor 400 is further configured to: perform data transmission by using tunnel information between the user plane functional entity.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 400 and various circuits of memory represented by memory 401.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 400 is responsible for managing the bus architecture and general processing, and the memory 401 can store data used by the processor 400 in performing operations.
  • the flow disclosed in the embodiment of the present invention may be applied to the processor 400 or implemented by the processor 400.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 400 or an instruction in the form of software.
  • the processor 400 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 401, and the processor 400 reads the information in the memory 401 and completes the steps of the signal processing flow in conjunction with its hardware.
  • an embodiment of the present invention provides a session establishment terminal, where the terminal includes a processor 500, a memory 501, and a transceiver 502, wherein the processor 500 is configured to read a program in the memory and execute:
  • the access and mobility management function entity sends a session establishment request message; establishes a control plane session with the access and mobility management function entity; and performs data transmission with the access and mobility management function entity through a control plane session.
  • the processor 500 is specifically configured to: before the sending the session establishment request message to the access and mobility management function entity, negotiate with the access and mobility management function entity to determine that the session type is Control plane session.
  • the processor 500 is specifically configured to send, after receiving the non-access stratum response message sent between the access and mobility management function entity, to the access and mobility management function entity.
  • Non-access stratum acknowledgement message is specifically configured to send, after receiving the non-access stratum response message sent between the access and mobility management function entity, to the access and mobility management function entity.
  • the processor 500 is specifically configured to perform data transmission between the access and mobility management function entity by using a non-access stratum mobility management message.
  • the processor 500 is specifically configured to perform data transmission between the access and mobility management function entity by using a non-access stratum session management message.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 501.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 501 can store data used by the processor 500 when performing operations.
  • the flow disclosed in the embodiment of the present invention may be applied to the processor 500 or implemented by the processor 500.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 500 or an instruction in the form of software.
  • the processor 500 can be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can be implemented or executed in an embodiment of the invention.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 501, and the processor 500 reads the information in the memory 501 and completes the steps of the signal processing flow in conjunction with its hardware.
  • an embodiment of the present invention provides a session establishment access and mobility management function entity, where the access and mobility management function entity includes: a first receiving module 600, receiving a session establishment request sent by the terminal;
  • the first execution module 601 is configured to determine to establish a control plane session for the terminal, and indicate to the session management function entity to establish a control plane session for the terminal;
  • the transmission module 602 is configured to perform data transmission between the terminal and the terminal through a non-access stratum message.
  • the first execution module 601 is further configured to: determine, in the registration process, the session type to be a control plane session.
  • the first execution module 601 is further configured to: indicate, to the session management function entity, tunnel information of the access and mobility management function entity.
  • the tunnel information of the access and mobility management function entity is used by the user plane function entity to send downlink data to the tunnel information of the access and mobility management function entity.
  • the first receiving module 600 is further configured to: receive tunnel information of a user plane function entity indicated by the session management function entity.
  • the tunnel information of the user plane function entity is used by the access and mobility management function entity to send uplink data to the tunnel information of the user plane function entity.
  • the first receiving module 600 is further configured to: receive the quality of service information of the session indicated by the session management function entity.
  • the transmitting module 602 is configured to: perform data transmission between the terminal and the terminal by using a non-access stratum mobility management message.
  • the transmitting module 602 is further configured to: perform data transmission by using tunnel information between the user plane functional entity.
  • the transmitting module 602 is configured to: perform data transmission between the terminal and the terminal by using a non-access stratum session management message.
  • the transmitting module 602 is further configured to: perform a transmission of a non-access stratum session management message with the session management function entity.
  • an embodiment of the present invention provides a session establishment function entity, where the session management function entity includes: a second receiving module 700, configured to receive a session establishment request sent by the terminal; and receive access and mobility.
  • the management function entity sends the indication information of the control plane session to the terminal.
  • the second execution module 701 is configured to indicate the tunnel information of the downlink data transmission to the user plane function entity.
  • the second receiving module 700 is further configured to: receive tunnel information of the access and mobility management function entity sent by the access and mobility management function entity.
  • the tunnel information of the downlink data transmission is tunnel information provided by the access and mobility management function entity, or tunnel information of the session management function entity.
  • the second execution module 701 is further configured to: indicate, to the access and mobility management function entity, quality of service information of the session.
  • the second execution module 701 is further configured to: the session management function entity, to the access and mobility management function entity, the tunnel information of the user plane function entity.
  • the second execution module 701 is further configured to: determine, according to the session context information of the terminal, that the session type is a control plane session.
  • the second execution module 701 is further configured to: indicate, to the access and mobility management function entity, tunnel information of a user plane function entity corresponding to the session.
  • the second execution module 701 is further configured to: perform data transmission with the terminal by using a non-access stratum session management message.
  • the second execution module 701 is further configured to: perform data transmission by using tunnel information between the user plane function entity.
  • the embodiment of the present invention provides a session establishment terminal, where the terminal includes: a sending module 800, configured to send a session establishment request message to the access and mobility management function entity; and a third execution module 801. And configured to establish a control plane session with the access and mobility management function entity; and the second transmission module 802 is configured to perform data transmission with the access and mobility management function entity through a control plane session.
  • the third execution module 801 is configured to: before the sending the session establishment request message to the access and mobility management function entity, determine the session type by negotiating with the access and mobility management function entity in the registration process. For a control plane session.
  • the sending module 800 is configured to: after receiving the non-access stratum response message sent between the access and mobility management function entity, send the non-access to the access and mobility management function entity Access layer acknowledgement message.
  • the second transmission module 802 is configured to: perform data transmission between the terminal and the access and mobility management function entity by using a non-access stratum mobility management message.
  • the second transmission module 802 is configured to: perform data transmission between the terminal and the access and mobility management function entity by using a non-access stratum session management message.
  • Embodiments of the present invention provide a readable storage medium for session establishment, including program code for causing the computing device to perform access and mobility management functions when the program code is run on a computing device The steps of either method of the entity or the steps of any method of the session management function entity or the steps of either method of the terminal.
  • the embodiment of the present invention further provides a session establishment access and mobility management function entity, and the device corresponding to the method is the access and mobility management in the session establishment system of the embodiment of the present invention.
  • the functional entity, and the principle of the method to solve the problem is similar to the device. Therefore, the implementation of the method can be referred to the implementation of the system, and the repeated description is not repeated.
  • an embodiment of the present invention provides a method for establishing an access and mobility management function entity of a session:
  • Step 900 The access and mobility management function entity receives a session establishment request sent by the terminal.
  • Step 901 The access and mobility management function entity determines to establish a control plane session for the terminal.
  • Step 902 The access and mobility management function entity indicates to the session management function entity to establish a control plane session for the terminal.
  • Step 903 The access and mobility management function entity and the terminal perform data transmission by using a non-access stratum message
  • the access and mobility management function entity determines to establish a control plane session for the terminal, including:
  • the access and mobility management function entity negotiates with the terminal during the registration process to determine that the session type is a control plane session.
  • the access and mobility management function entity indicates to the session management function entity that the control plane session is established for the terminal, and the method further includes:
  • the access and mobility management function entity indicates tunnel information of the access and mobility management function entity to the session management function entity.
  • the access and mobility management function entity indicates the tunnel information of the access and mobility management function entity to the session management function entity, including:
  • the tunnel information of the access and mobility management function entity is used by the user plane function entity to send downlink data to the tunnel information of the access and mobility management function entity.
  • the access and mobility management function entity indicates to the session management function entity that the control plane session is established for the terminal, and the method further includes:
  • the access and mobility management function entity receives tunnel information of a user plane function entity indicated by the session management function entity.
  • the tunnel information of the user plane function entity is used by the access and mobility management function entity to send uplink data to the tunnel information of the user plane function entity.
  • the access and mobility management function entity receives the tunnel information of the user plane function entity indicated by the session management function entity, and further includes:
  • the access and mobility management function entity receives quality of service information of the session indicated by the session management function entity.
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum message, including:
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum mobility management message.
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum mobility management message, and the method further includes:
  • the access and mobility management function entity and the user plane function entity perform data transmission through the tunnel information.
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum message, including:
  • the access and mobility management function entity and the terminal perform data transmission through a non-access stratum session management message.
  • the access and mobility management function entity and the terminal perform data transmission by using a non-access stratum session management message, and the method further includes:
  • the non-access stratum session management message is transmitted between the access and mobility management function entity and the session management function entity.
  • a method for session-established session management function entity is also provided in the embodiment of the present invention.
  • the device corresponding to the method is a session management function entity in the system established by the session in the embodiment of the present invention, and the method solves the problem.
  • the principle is similar to the device, so the implementation of the method can be referred to the implementation of the system, and the repeated description will not be repeated.
  • an embodiment of the present invention provides a method for session establishment function entity established by a session:
  • Step 1000 The session management function entity receives a session establishment request sent by the terminal.
  • Step 1001 The session management function entity receives, by the access and mobility management function entity, indication information for establishing a control plane session for the terminal;
  • Step 1002 The session management function entity indicates tunnel information of downlink data transmission to a user plane function entity.
  • the session management function entity receives the indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and further includes:
  • the session management function entity receives tunnel information of the access and mobility management function entity sent by the access and mobility management function entity.
  • the session management function entity indicates the tunnel information of the downlink data transmission to the user plane function entity, including:
  • the tunnel information of the downlink data transmission is tunnel information provided by the access and mobility management function entity, or tunnel information of the session management function entity.
  • the session management function entity receives the indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and further includes:
  • the session management function entity indicates the quality of service information of the session to the access and mobility management function entity.
  • the session management function entity receives the indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and further includes:
  • the session management function entity indicates tunnel information of the user plane function entity to the access and mobility management function entity.
  • the session management function entity receives the indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and further includes:
  • the session management function entity determines, according to the session context information of the terminal, that the session type is a control plane session.
  • the session management function entity confirms that the session type is a control plane session, and further includes:
  • the session management function entity indicates, to the access and mobility management function entity, tunnel information of a user plane function entity corresponding to the session.
  • the session management function entity receives the indication information that is sent by the access and mobility management function entity to establish a control plane session for the terminal, and further includes:
  • the session management function entity and the terminal perform data transmission through a non-access stratum session management message.
  • the session management function entity and the terminal perform data transmission by using a non-access stratum session management message, and the method further includes:
  • the session management function entity and the user plane function entity perform data transmission through the tunnel information.
  • a method for establishing a terminal in a session is also provided in the embodiment of the present invention.
  • the device corresponding to the method is a terminal in the system established by the session in the embodiment of the present invention, and the method solves the problem and the device Similarly, the implementation of the method can be referred to the implementation of the system, and the details are not repeated here.
  • an embodiment of the present invention provides a method for establishing a terminal by using a session, where the method includes:
  • Step 1100 The terminal sends a session establishment request message to the access and mobility management function entity.
  • Step 1101 The terminal establishes a control plane session with the access and mobility management function entity.
  • Step 1102 The terminal and the access and mobility management function entity perform data transmission by using a control plane session.
  • the method before the terminal sends the session establishment request message to the access and mobility management function entity, the method includes:
  • the terminal negotiates with the access and mobility management function entity in the registration process to determine that the session type is a control plane session.
  • the terminal establishes a control plane session with the access and mobility management function entity, including:
  • the terminal After receiving the non-access stratum response message sent by the access and mobility management function entity, the terminal sends a non-access stratum acknowledgement message to the access and mobility management function entity.
  • the terminal and the access and mobility management function entity perform data transmission through a control plane session, including:
  • the terminal and the access and mobility management function entity perform data transmission by using a non-access stratum mobility management message.
  • the terminal and the access and mobility management function entity perform data transmission through a control plane session, including:
  • the terminal and the access and mobility management function entity perform data transmission by using a non-access stratum session management message.
  • the embodiment of the present invention provides a complete flow chart for data transmission between an access and mobility management function entity and a terminal through a non-access stratum mobility management message (the following access and mobility management functions)
  • the entity is the AMF entity
  • the session SMF entity is the session management function entity
  • the UPF entity is the user plane function entity
  • Step 1200 The terminal sends a PDU session establishment request to the AMF entity.
  • Step 1201 The AMF entity sends a session management function service request message (including AMF tunnel information) to the session management function entity (Nsmf_PDUSession_CreateSMRequest;
  • Step 1202 The SMF entity requests a service from the UDM.
  • Step 1203 The SMF entity requests a service from the PCF.
  • Step 1204 The SMF entity sends an N4 session establishment request (including AMF tunnel information) to the UPF entity (N4Session Establishment);
  • Step 1205 The UPF entity returns an N4 Session Establishment Request Response (N4Session Estbl Resp) to the SMF entity.
  • N4Session Establishment Request Response N4Session Estbl Resp
  • Step 1206 The SMF entity returns a quality service message (including UPF tunnel information) of the session to the AMF entity (Nsmf_PDUSession_CreateSMContextResp);
  • Step 1207 the AMF entity sends an N2 setup request message (N2msg) to the RNA entity.
  • N2msg N2 setup request message
  • Step 1208 The RAN entity forwards the NAS message (RRC msg) to the terminal by using an RRC message.
  • Step 1209 The terminal sends a PDU session establishment response message (RRC msg) to the RAN through an RRC message.
  • RRC msg PDU session establishment response message
  • Step 1210 The RAN entity forwards the NAS response message (N2msg) to the AMF entity by using the N2 message.
  • Step 1211 After the PDU session is established, the AMF and the terminal perform data transmission by using a non-access stratum mobility management message.
  • the embodiment of the present invention provides a complete flow chart for performing downlink data transmission between an access and mobility management function entity and a terminal (the following access and mobility management function entity, ie, AMF entity, session SMF)
  • the entity is the session management function entity
  • the UPF entity is the user plane function entity
  • Step 1300 The UPF entity sends a data notification request message (Data Notification) to the SMF entity.
  • Data Notification a data notification request message
  • Step 1301 The SMF entity sends an AMF service request message.
  • Step 1302 An SMF service request message that is passed by the AMF entity
  • Step 1303 The SMF entity initiates an N4 process (N4Session Update) to the UPF entity.
  • N4Session Update N4Session Update
  • Step 1304 The UPF entity sends the downlink data to the AMF (N4Session Update).
  • Step 1305 The AMF entity initiates paging (Paging) to the terminal.
  • Step 1306 The terminal sends a session establishment message (RRC msg) to the RAN through an RRC message.
  • RRC msg session establishment message
  • Step 1307 The RAN entity sends a NAS message (N2msg) to the AMF entity by using an N2 message.
  • Step 1308 The AMF entity performs encryption and integrity protection on the downlink data.
  • Step 1309 The AMF entity sends a NAS message response message (NAS msg) to the RAN entity by using an N2 message.
  • NAS msg NAS message response message
  • Step 1310 The RAN entity returns a control plane session establishment response message (RRC Msg) to the terminal by using an RRC message.
  • RRC Msg control plane session establishment response message
  • the embodiment of the present invention provides a complete flow chart of data transmission between a access and mobility management function entity and a terminal through a non-access stratum session management message (the access and mobility management function entity described below) That is, the AMF entity, the session SMF entity, that is, the session management function entity, and the UPF, that is, the user plane function entity):
  • Step 1400 The terminal sends a PDU session establishment request to the AMF entity.
  • Step 1401 The AMF entity sends an SMF service request message (Nsmf_PDUSession_CreateSMRequest) to the SMF entity.
  • Nsmf_PDUSession_CreateSMRequest an SMF service request message
  • Step 1402 The SMF entity requests a service from the UDM.
  • Step 1403 The SMF entity requests a service from the PCF.
  • Step 1404 The SMF entity sends an N4 session establishment request (N4Session Establishment) to the UPF entity.
  • N4Session Establishment N4 session establishment request
  • Step 1405 The UPF entity returns an N4 Session Establishment Request Response (N4Session Estbl Resp) to the SMF entity.
  • N4Session Establishment Request Response N4Session Estbl Resp
  • Step 1406 The SMF entity sends a session quality service message (Nsmf_PDUSession_CreateSMContextResp) to the AMF entity.
  • Nsmf_PDUSession_CreateSMContextResp a session quality service message
  • Step 1407 the AMF entity sends an N2 setup request message (N2msg) to the RNA entity.
  • N2msg N2 setup request message
  • Step 1408 The RAN entity forwards the NAS message (RRC msg) to the terminal by using an RRC message.
  • Step 1409 The terminal sends a PDU session establishment response message (RRC msg) to the RAN through an RRC message.
  • RRC msg PDU session establishment response message
  • Step 1410 The RAN entity forwards the NAS response message (N2msg) to the AMF entity by using the N2 message.
  • Step 1411 After the PDU session is established, the AMF and the terminal perform data transmission by using a non-access stratum session management message.
  • the embodiment of the present invention provides a complete flowchart for performing downlink data transmission between an access and mobility management function entity, a session management function entity, and a terminal (the following AMF entity is access and mobility management).
  • the functional entity, the SMF entity is the session management function entity, and the UPF is the user plane function entity):
  • Step 1500 The UPF entity sends a data notification request message (Data Notification) to the SMF entity.
  • Data Notification a data notification request message
  • Step 1501 The SMF entity initiates an N4 process (N4Session Update) to the UPF entity.
  • N4Session Update N4Session Update
  • Step 1502 The UPF entity sends the downlink data to the SMF entity (DL data);
  • Step 1503 The SMF entity sends an AMF service request message (Nsmf_DataTransReq/Resp(N1SM));
  • Step 1504 The SMF entity sends the downlink data to the AMF entity (DL data).
  • Step 1505 The AMF entity initiates paging (Paging) to the terminal.
  • Step 1506 The terminal sends a session establishment message (RRC msg) to the RAN through an RRC message.
  • RRC msg session establishment message
  • Step 1507 The RAN entity sends a NAS message (N2msg) to the AMF entity by using an N2 message.
  • Step 1508 the AMF sends a NAS message response message (NAS msg) to the RAN entity by using the N2 message.
  • NAS msg NAS message response message
  • Step 1509 The RAN entity returns a control plane session establishment response message (RRC Msg) through an RRC message.
  • RRC Msg control plane session establishment response message
  • the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system.
  • a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

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Abstract

本发明公开了一种会话建立的方法及装置，用以解决现有技术中4G网络建立控制面数据传输的方法不适用于5G网络的问题。本法明实施例接入和移动性管理功能实体在接收到终端发送的会话建立请求后向会话管理功能实体指示为所述终端建立控制面会话，所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息，当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输。由于本发明中当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，因此适用于5G网络中控制面数据的传输。

Description

一种会话建立的方法及装置
本申请要求在2017年12月25日提交中国专利局、申请号为201711421335.0、发明名称为“一种会话建立的方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，特别涉及一种会话建立的方法及装置。
背景技术
为支持水表、电表等CIoT(Cellular Internet of Things，蜂窝物联网)应用的小数据传输，3GPP(3rd Generation Partnership Project，第三代移动通信标准化组织)在R13定义了一种Control Plane(控制面会话)的数据传输方法，该方法通过NAS(Non Access Stratum，非接入层)消息在终端和MME(Mobility Management Entity，移动性管理实体)之间传输数据，不会建立空口DRB(Data Radio Bearer，数据无线承载)和S1-U连接。
5G网络架构中相较于4G网络架构发生了重大改变，主要体现在：(1)、基于服务化接口的网络架构，5G核心网中控制面网元之间采用服务化接口，例如AMF(Access and Mobility Management Function，接入和移动性管理功能)和SMF(Session Management Function，会话管理功能)之间采用服务化接口；(2)、MM(Mobility Management，移动性管理)和SM(Session Management，会话管理)分离，AMF负责MM功能，SMF负责SM功能；(3)、CP(Control Plane，控制面)和UP(User Plane，用户面)分离，用户面功能(User Plane Function，UPF)为用户面(UP)网元，AMF/SMF等为控制面(CP)网元。R15定义了5G基本架构和流程，包括PDU Session(Protocol Data Unit Session，协议数据单元会话)建立流程，用于建立终端和网络之间的用户面(User Plane)连接，但是现有的PDU Session建立过程不支持建立Control Plane PDU(控制面协议数据单元)会话。
综上所述，现有技术中4G网络建立控制面会话数据传输的方法不适用于5G网络。
发明内容
本发明提供一种会话建立的方法及装置，用以解决现有技术中4G网络建立控制面会话数据传输的方法不适用于5G网络的问题。
本发明实施提供一种会话建立的方法，该方法包括：
接入和移动性管理功能实体接收终端发送的会话建立请求；
所述接入和移动性管理功能实体确定为终端建立控制面会话；
所述接入和移动性管理功能实体向会话管理功能实体指示为所述终端建立控制面会话；
所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输。
本发明实施提供另一种会话建立的方法，该方法包括：
会话管理功能实体接收终端发送的会话建立请求；
所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；
所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息。
本发明实施提供一种会话建立的方法，该方法包括：
终端向接入和移动性管理功能实体发送会话建立请求消息；
所述终端与所述接入和移动性管理功能实体建立控制面会话；
所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
本发明实施提供一种会话建立的接入和移动性管理功能实体，该接入和移动性管理功能实体包括处理器、存储器和收发机，
其中，处理器，用于读取存储器中的程序并执行：
接收终端发送的会话建立请求；确定为终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；和终端之间通过非接入层消息进行数据传输。
本法明实施提供一种会话建立的会话管理功能实体，该接入和移动性管理功能实体包括处理器、存储器和收发机，
其中，处理器，用于读取存储器中的程序并执行：
接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；向用户面功能实体指示下行数据传输的隧道信息。
本发明实施提供一种会话建立的终端，该终端包括处理器、存储器和收发机，
其中，处理器，用于读取存储器中的程序并执行：
向接入和移动性管理功能实体发送会话建立请求消息；
与所述接入和移动性管理功能实体建立控制面会话；
与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
本发明实施提供一种会话建立的接入和移动性管理功能实体，该接入和移动性管理功能实体包括：
第一接收模块，接收终端发送的会话建立请求；
第一执行模块，用于确定为终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；
传输模块，用于和终端之间通过非接入层消息进行数据传输。
本发明实施提供一种会话建立的会话管理功能实体，该会话管理功能实体包括：
第二接收模块，用于接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；
第二执行模块，用于向用户面功能实体指示下行数据传输的隧道信息。
本发明实施提供一种会话建立的终端，该终端包括：
发送模块，用于终端向接入和移动性管理功能实体发送会话建立请求消息；
第三执行模块，用于与所述接入和移动性管理功能实体建立控制面会话；
第二传输模块，用于与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
本发明实施提供一种会话建立可读存储介质，包括程序代码，当所述程序代码在计算设备上运行时，所述程序代码用于使所述计算设备执行接入和移动性管理功能实体任一所述方法的步骤或会话管理功能实体任一所述方法的步骤或终端任一所述方法的步骤。
本法明实施例接入和移动性管理功能实体在接收到终端发送的会话建立请求后向会话管理功能实体指示为所述终端建立控制面会话，所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息，当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输。由于本发明中当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，因此适用于5G网络中控制面数据的传输。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，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，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例的系统结构示意图；
图2为5G网络的构架示意图；
图3为本发明实施例接入和移动性管理功能实体的结构示意图；
图4为本发明实施例会话管理功能实体的结构示意图；
图5为本发明实施例终端的结构示意图；
图6为本发明实施例另一种接入和移动性管理功能实体的结构示意图；
图7为本发明实施例另一种会话管理功能实体的结构示意图；
图8为本发明实施例另一种终端的结构示意图；
图9为本发明实施例接入和移动性管理功能实体侧的方法的流程示意图；
图10为本发明实施例会话管理功能实体侧的方法的流程示意图；
图11为本发明实施例会话终端侧的方法的流程示意图；
图12为本发明实施例接入和移动性管理功能实体和终端之间通过非接入层移动会话管理消息进行数据传输的完整流程示意图；
图13为本发明实施例基于接入和移动性管理功能实体和终端之间进行下行数据传输的完整流程示意图；
图14为本发明实施例接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输的完整流程示意图；
图15为本发明实施例基于会话管理功能实体和终端之间进行下行数据传输的完整流程示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部份实施例，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它实施例，都属于本发明保护的范围。
如图1所述，本发明实施例进行会话建立的系统包括接入和移动性管理功能实体100和会话管理功能实体101。
接入和移动性管理功能实体100，用于接收终端发送的会话建立请求；确定为终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；和终端之间通过非接入层消息进行数据传输。
会话管理功能实体101，用于接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；向用户面功能实体指示下行数据传输的隧道信息。
终端102，用于向接入和移动性管理功能实体发送会话建立请求消息；与所述接入和移动性管理功能实体建立控制面会话；与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
本法明实施例中，接入和移动性管理功能实体在接收到终端发送的会话建立请求后向会话管理功能实体指示为所述终端建立控制面会话，所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息，当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输。由于本发明当需要传输数据时，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，因此适用于5G网络中控制面数据的传输。
如图2所示，基于5G网络构架，本发明实施例提供两种建立控制面会话数据传输的方法，一种方法为所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输，另一种方法为所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输的方法。
一、所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输：
终端在需要建立会话时，向接入和移动性管理功能实体发送会话建立请求，其中，所述会话建立请求置于非接入层消息中。
相应的，所述接入和移动性管理功能实体在接收到终端发送的会话建立请求后，根据在对所述终端进行的注册过程中与该终端的协商结果确定所述会话类型为控制面会话，并向所述会话管理功能实体指示为所述终端建立控制面会话的指示和所述接入和移动性管理功能实体的隧道信息。
其中，所述接入和移动性管理功能实体的隧道信息被用户面功能实体用于向移动性管理功能实体发送下行数据。
相应的，所述会话管理功能实体接收接入和移动性管理功能实体发送的所述终端建立控制面会话的指示信息和接入和移动性管理功能实体的隧道信息后，向用户面功能实体指示下行数据传输的接入和移动性管理功能实体提供的隧道信息。
在用户面功能实体返回接收指示响应后，所述会话管理功能实体向所述接入和移动性管理功能实体指示所述会话的服务质量信息。
相应的，所述接入和移动性管理功能实体接收所述会话管理功能实体指示的所述会话的服务质量信息。其中所述会话的服务质量信息中包括户面功能实体的隧道信息。
这里需要说明的是，所述会话管理功能实体发送至所述接入和移动性管理功能实体的户面功能实体隧道信息可以由所述会话管理功能实体自身分配，也可以由户面功能实体分配，若所述户面功能实体隧道信息由户面功能实体分配，所述户面功能实体需要将所述户面功能实体隧道信息置于接收指示响应提供给所述会话管理功能实体。
所述接入和移动性管理功能实体向终端发送的非接入层接入消息，相应的，所述终端在接收到所述接入和移动性管理功能实体发送的非接入层响应消息之后，所述终端向所述接入和移动性管理功能实体发送非接入层确认消息。
此时，控制面会话建立完成，所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输。
若所述终端处于空闲状态，当有下行数据到达用户面功能实体时，所述会话管理功能实体根据所述终端的会话上下文信息，确定会话类型为控制面会话，并向所述接入和移动性管理功能实体指示该会话对应的用户面功能实体的隧道信息。
所述接入和移动性管理功能实体接收到用户面功能实体的隧道信息后，将自身的隧道信息发送给会话管理功能实体，所述会话管理功能实体将所述接入和移动性管理功能实体隧道信息转发到用户面功能实体，下行数据可发送到所述接入和移动性管理功能实体，所述接入和移动性管理功能实体将下行数据通过非接入层消息发送给终端。
二、所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输：
终端在需要建立会话时，向接入和移动性管理功能实体发送会话建立请求，其中，所述会话建立请求置于非接入层消息中。
相应的，所述接入和移动性管理功能实体在接收到终端发送的会话建立请求后，根据在对所述终端的注册过程中与该终端的协商结果确定所述会话类型为控制面会话，并向所述会话管理功能实体指示为所述终端建立控制面会话的指示。
相应的，所述会话管理功能实体接收接入和移动性管理功能实体发送的所述终端建立控制面会话的指示信息后，向用户面功能实体指示下行数据传输的会话管理功能实体提供的隧道信息。
相应的，所述接入和移动性管理功能实体接收所述会话管理功能实体指示的所述会话的服务质量信息。
这里需要说明的是，若所述用户面功能实体隧道信息由户面功能实体分配，所述户面功能实体需要将所述用户面功能实体隧道信息提供给所述会话管理功能实体。
相应的，在控制面会话建立后，所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输，所述接入和移动性管理功能实体与用户面功能实体之间通过隧道信息进行数据传输。
所述接入和移动性管理功能实体向终端发送的非接入层接入消息，相应的，所述终端在接收到所述接入和移动性管理功能实体之间发送的非接入层响应消息之后，所述终端向所述接入和移动性管理功能实体发送非接入层确认消息。
此时，控制面会话建立完成，所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输，所述接入和移动性管理功能实体和会话管理功能实体之间进行非接入层会话管理消息的传输。
若所述终端处于空闲状态，当有下行数据到达户面功能实体时，所述会话管理功能实体根据所述终端的会话上下文信息，确定会话类型为控制面会话，并向所述用户面功能实体指示会话管理功能实体隧道信息，下行数据可发送到会话管理功能实体。
所述会话管理功能实体将下行数据通过发送给所述接入和移动性管理功能实体，所述接入和移动性管理功能实体将下行数据通过非接入层消息发送给终端。
下面本发明实施例针对上述两种建立控制面会话数据传输的方法进行详细的描述。
一、所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输：
终端向接入和移动性管理功能实体发送建立PDU会话的非接入层请求消息，其中，所述非接入层请求消息包括终端分配的用于建立PDU会话ID((identification，身份标识)和PDU会话建立请求。
相应的，所述接入和移动性管理功能实体接收到来自终端的非接入层请求消息后，确定所述非接入层请求消息为新建PDU会话的消息，并根据在终端注册过程中与终端的协商结果，判断是否需要为终端建立控制面会话，若所述协商结果为Control Plane CIoT EPS optimisation(控制面蜂窝物联网演进分组系统优化)，则为终端建立控制面会话。
所述接入和移动性管理功能确定为终端建立控制面后，向接入和移动性管理功能实体发送接入和移动性管理功能请求服务消息。
其中，所述请求接入和移动性管理功能实体服务消息中包括所述接入和移动性管理功能ID，用于建立PDU会话ID、PDU会话建立请求、建立控制面会话的指示信息和接入和移动性管理功能实体隧道信息，所述接入和移动性管理功能实体隧道信息用于用户面功能实体向接入和移动性管理功能实体发送下行数据。
相应的，所述接入和移动性管理功能实体接收到接入和移动性管理功能请求服务消息后，请求UDM(Unified Data Management，统一数据管理功能)服务并从所述UDM实体获取PDU会话的相关签约信息；所述接入和移动性管理功能实体请求PCF(Policy Control Function，策略控制功能)服务，并从所述PCF获取PDU会话的相关PCC规则。
所述接入和移动性管理功能实体获取PDU会话的相关签约信息和相关PCC规则后，将所述接入和移动性管理功能实体隧道信息和packet detection(封包侦测)等规则置于N4会话建立请求消息中发送至选择的用户面功能实体。
所述接入和移动性管理功能实体在接收到所述用户面功能实体发送的N4会话建立响应消息后，将用于接入和移动性管理功能实体向用户面功能实体发送上行数据的用户面功能实体隧道信息、PDU会话ID和PDU会话建立响应消息置于会话的服务质量信息中发送至所述接入和移动性管理功能实体。
由于所述接入和移动性管理功能实体在进行会话建立时需要进行QoS(Quality of Service，业务质量)配置，然而所述接入和移动性管理功能实体并不已知建立QoS配置的配置参数，需要接入和移动性管理功能实体提供，因此所述N4会话建立响应消息中还包括QoS配置的配置参数。
相应的，所述接入和移动性管理功能实体向RAN(Radio Access Network，无线接入网)发送N2请求消息，其中，所述接入和移动性管理功能请求服务响应消息中包括非接入层信息(即PDU会话ID和PDU会话建立响应消息)。
所述RAN在接收所述接入和移动性管理功能实体发送的N2请求消息后，将所述接入和移动性管理功能请求服务响应消息中的非接入层信息通过RRC消息发送至终端。
所述终端实体在收到无线接入网RAN发送的非接入层message(信息)后，通过RRC(Radio Resource Control，无线资源控制)消息向所述RAN返回建立PDU会话的非接入层响应消息，此时终端完成建立控制面会话。
相应的，在控制面会话建立后，所述接入和移动性管理功能实体和终端之间通过非接 入层移动性管理消息进行数据传输。
1、所述终端处于空闲状态，当有下行数据到达户面功能实体时：
当所述用户面功能实体用户面功能发现没有发送下行数据的通路时，所述用户面功能实体向接入和移动性管理功能实体发送数据通知请求消息，该消息中包含PDU会话ID。
相应的，所述接入和移动性管理功能实体接收到数据通知请求消息后根据所述终端的会话上下文信息，确定会话类型为控制面会话，并向所述接入和移动性管理功能实体发送接入和移动性管理功能实体服务请求消息，其中，所述接入和移动性管理功能实体服务请求消息中包含PDU会话ID、所述用户面功能实体隧道信息。
相应的，所述接入和移动性管理功能实体接收到接入和移动性管理功能的接入和移动性管理功能服务请求消息后，将所述接入和移动性管理功能实体隧道信息置于接入和移动性管理功能实体服务请求消息中发送给所述接入和移动性管理功能实体。
所述接入和移动性管理功能实体接收到接入和移动性管理功能实体发送的接入和移动性管理功能实体隧道信息后，通过N4会话下行数据消息将所述接入和移动性管理功能实体隧道信息发送给所述用户面功能实体。
相应的，所述用户面功能实体将接收到的下行数据通过所述接入和移动性管理功能实体隧道信息发送给所述接入和移动性管理功能实体，所述接入和移动性管理功能实体在接收到所述用户面功能实体发送的下行数据后，通过RNA向终端发送寻呼。
所述终端接收到来自RNA发送的寻呼后，通过RRC消息向所述RNA发送控制面会话请求，所述RNA将所述控制面会话请求发送至所述接入和移动性管理功能实体，所述终端和所述接入和移动性管理功能实体之间建立连接。
相应的所述接入和移动性管理功能实体对接收到的下行数据进行加密和完整性保护，并将所述下行数据发送给所述终端。
这里需要说明的是，所述接入和移动性管理功能实体向所述接入和移动性管理功能实体发送接入和移动性管理功能实体服务请求消息中和所述用户面功能实体将接收到的下行数据通过所述接入和移动性管理功能实体隧道信息发送给所述接入和移动性管理功能实体可在述终端和所述接入和移动性管理功能实体之间建立连接后执行。
二、当所述用于发送下行数据的隧道信息了为接入和移动性管理功能实体隧道信息时：
终端向接入和移动性管理功能实体发送建立PDU会话的非接入层请求信息，其中，所述非接入层请求信息包括终端分配的用于建立PDU会话ID和PDU会话建立请求。
相应的，所述接入和移动性管理功能实体接收到来自终端的非接入层请求信息后，确定所述非接入层请求消息为新建PDU会话的消息，并根据在终端注册过程中与终端的协商结果，判断是否需要为终端建立控制面会话，若所述协商结果为Control Plane CIoT EPS optimisation，则为终端建立控制面会话。
所述接入和移动性管理功能确定为终端建立控制面会话后，向接入和移动性管理功能实体发送接入和移动性管理功能请求服务消息，其中，所述请求接入和移动性管理功能实体服务消息中包括所述接入和移动性管理功能ID，用于建立PDU会话ID、PDU会话建立请求、建立控制面会话的指示信息。
相应的，所述接入和移动性管理功能实体接收到接入和移动性管理功能请求服务消息后，请求UDM服务并从所述UDM获取PDU会话的相关签约信息；所述接入和移动性管 理功能实体请求PCF服务，并从所述PCF获取PDU会话的相关PCC规则。
所述接入和移动性管理功能实体获取PDU会话的相关签约信息和相关PCC规则后，将接入和移动性管理功能实体隧道信息和packet detection等规则置于N4会话建立请求消息中发送至选择的用户面功能实体。
所述接入和移动性管理功能实体在接收到所述用户面功能实体发送的N4会话建立响应消息后，将PDU会话ID和PDU会话建立响应消息置于接入和移动性管理功能请求服务响应消息中发送至所述接入和移动性管理功能实体。
相应的，所述接入和移动性管理功能实体向RAN发送N2请求消息，其中，所述N2请求中包括非接入层信息(即PDU会话ID和PDU会话建立响应消息)。
所述RAN在接收所述接入和移动性管理功能实体发送的N2请求消息后，将所述N2请求消息中的非接入层信息通过RRC消息发送至终端。
所述终端实体在收到无线接入网RAN发送的非接入层message后，通过RRC消息向所述RAN返回建立PDU会话的非接入层响应消息，此时完成建立控制面会话。
当用户面功能实体控制面需要向所述终端发送数据时，所述用户面功能实体通过所述接入和移动性管理功能实体隧道信息发送至所述接入和移动性管理功能实体，所述接入和移动性管理功能实体将所述数据发送给所述终端。
1、所述终端处于空闲状态，当有下行数据到达户面功能实体时：
当所述用户面功能实体用户面功能发现没有发送下行数据的通路时，所述用户面功能实体向接入和移动性管理功能实体发送数据通知请求消息，该消息中包含PDU会话ID。
相应的，所述接入和移动性管理功能实体接收到数据通知请求消息后根据所述终端的会话上下文信息，确定会话类型为控制面会话，则通过N4会话下行数据将接入和移动性管理功能实体隧道信息发送给所述用户面功能实体。
相应的，所述接入和移动性管理功能实体接收到接入和移动性管理功能的接入和移动性管理功能服务请求消息后，将所述接入和移动性管理功能实体隧道信息置于接入和移动性管理功能实体服务请求消息中发送给所述接入和移动性管理功能实体。
所述接入和移动性管理功能实体接收到接入和移动性管理功能实体发送的接入和移动性管理功能实体隧道信息后，将所述接入和移动性管理功能实体隧道信息发送给所述用户面功能实体。
相应的，所述接入和移动性管理功能实体在接收到所述用户面功能实体利用所述接入和移动性管理功能实体隧道信息发送的下行数据后，将所述下行数据置于接入和移动性管理功能实体服务请求中发送给接入和移动性管理功能实体。
所述接入和移动性管理功能实体在接收到所述用户面功能实体发送的下行数据后，通过RNA向终端发送寻呼。
所述终端接收到来自RNA发送的寻呼后，通过RRC消息向所述RNA发送控制面会话请求，所述RNA将所述Control Plane会话请求发送至所述接入和移动性管理功能实体，所述终端和所述接入和移动性管理功能实体之间建立连接。
相应的所述接入和移动性管理功能实体对接收到的下行数据进行加密和完整性保护，并将所述下行数据发送给所述终端。
如图3所示，本发明实施例提供一种会话建立的接入和移动性管理功能实体，该接入和移动性管理功能实体包括处理器300、存储器301和收发机302，
其中，处理器300，用于读取存储器中301的程序并执行：接收终端发送的会话建立请求；确定为终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；和终端之间通过非接入层消息进行数据传输。
可选的，所述处理器300具体用于：在注册过程中与终端协商确定会话类型为控制面会话。
可选的，所述处理器300还具体用于：向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息。
可选的，所述接入和移动性管理功能实体的隧道信息用于用户面功能实体向接入和移动性管理功能实体的隧道信息发送下行数据。
可选的，所述处理器300还具体用于：接收所述会话管理功能实体指示的用户面功能实体的隧道信息。
可选的，所述用户面功能实体的隧道信息用于所述接入和移动性管理功能实体向用户面功能实体的隧道信息发送上行数据。
可选的，所述处理器300还具体用于：接收所述会话管理功能实体指示的所述会话的服务质量信息。
可选的，所述处理器300具体用于：和终端之间通过非接入层移动性管理消息进行数据传输。
可选的，所述处理器300还具体用于：与用户面功能实体之间通过隧道信息进行数据传输。
可选的，所述处理器300具体用于：和终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述处理器300还具体用于：和会话管理功能实体之间进行非接入层会话管理消息的传输。
处理器300负责管理总线架构和通常的处理，存储器301可以存储处理器800在执行操作时所使用的数据。收发机302用于在处理器300的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥，具体由处理器800代表的一个或多个处理器和存储器301代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器300负责管理总线架构和通常的处理，存储器301可以存储处理器300在执行操作时所使用的数据。
本发明实施例揭示的流程，可以应用于处理器300中，或者由处理器300实现。在实现过程中，信号处理流程的各步骤可以通过处理器300中的硬件的集成逻辑电路或者软件形式的指令完成。处理器300可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器301，处理器300读取存储器301中的信息，结合其硬件完成信号处理流程的步骤。
如图4所示，本发明实施例提供一种会话建立的会话管理功能实体，该接入和移动性管理功能实体包括处理器400、存储器401和收发机402，
其中，处理器400，用于读取存储器401中的程序并执行：接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；向用户面功能实体指示下行数据传输的隧道信息。
可选的，所述处理器400还具体用于：接收所述接入和移动性管理功能实体发送的所述接入和移动性管理功能实体的隧道信息。
可选的，所述下行数据传输的隧道信息为接入和移动性管理功能实体提供的隧道信息，或者所述会话管理功能实体的隧道信息。
可选的，所述处理器400还具体用于：向所述接入和移动性管理功能实体指示所述会话的服务质量信息。
可选的，所述处理器还具体用于：所述会话管理功能实体向所述接入和移动性管理功能实体指示用户面功能实体的隧道信息。
可选的，所述处理器400还具体用于：根据所述终端的会话上下文信息，确定会话类型为控制面会话。
可选的，所述处理器还400具体用于：向所述接入和移动性管理功能实体指示该会话对应的用户面功能实体的隧道信息。
可选的，所述处理器400还具体用于：与所述终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述处理器400还具体用于：与用户面功能实体之间通过隧道信息进行数据传输。
总线架构可以包括任意数量的互联的总线和桥，具体由处理器400代表的一个或多个处理器和存储器401代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器400负责管理总线架构和通常的处理，存储器401可以存储处理器400在执行操作时所使用的数据。
本发明实施例揭示的流程，可以应用于处理器400中，或者由处理器400实现。在实现过程中，信号处理流程的各步骤可以通过处理器400中的硬件的集成逻辑电路或者软件形式的指令完成。处理器400可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器401，处理器400读取存储器401中的信息，结合其硬件完成信号处理流程的步骤。
如图5所示，本发明实施例提供一种会话建立的终端，该终端包括处理器500、存储器501和收发机502，其中，处理器500，用于读取存储器中的程序并执行：向接入和移动性管理功能实体发送会话建立请求消息；与所述接入和移动性管理功能实体建立控制面会话；与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
可选的，所述处理器500具体用于：在向接入和移动性管理功能实体发送会话建立请求消息之前，在注册过程中与所述接入和移动性管理功能实体协商确定会话类型为控制面会话。
可选的，所述处理器500具体用于：在接收到所述接入和移动性管理功能实体之间发送的非接入层响应消息之后，向所述接入和移动性管理功能实体发送非接入层确认消息。
可选的，所述处理器500具体用于：与所述接入和移动性管理功能实体之间通过非接入层移动性管理消息进行数据传输。
可选的，所述处理器500具体用于：与所述接入和移动性管理功能实体之间通过非接入层会话管理消息进行数据传输。
总线架构可以包括任意数量的互联的总线和桥，具体由处理器500代表的一个或多个处理器和存储器501代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器500负责管理总线架构和通常的处理，存储器501可以存储处理器500在执行操作时所使用的数据。
本发明实施例揭示的流程，可以应用于处理器500中，或者由处理器500实现。在实现过程中，信号处理流程的各步骤可以通过处理器500中的硬件的集成逻辑电路或者软件形式的指令完成。处理器500可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器501，处理器500读取存储器501中的信息，结合其硬件完成信号处理流程的步骤。
如图6所示，本发明实施例提供一种会话建立的接入和移动性管理功能实体，该接入和移动性管理功能实体包括：第一接收模块600，接收终端发送的会话建立请求；第一执行模块601，用于确定为终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；
传输模块602，用于和终端之间通过非接入层消息进行数据传输。
可选的，所述第一执行模块601还用于：在注册过程中与终端协商确定会话类型为控制面会话。
可选的，所述第一执行模块601还用于：向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息。
可选的，所述接入和移动性管理功能实体的隧道信息用于用户面功能实体向接入和移动性管理功能实体的隧道信息发送下行数据。
可选的，所述第一接收模块600还用于：接收所述会话管理功能实体指示的用户面功能实体的隧道信息。
可选的，所述用户面功能实体的隧道信息用于所述接入和移动性管理功能实体向用户面功能实体的隧道信息发送上行数据。
可选的，所述第一接收模块600还用于：接收所述会话管理功能实体指示的所述会话 的服务质量信息。
可选的，所述传输模块602用于：和终端之间通过非接入层移动性管理消息进行数据传输。
可选的，所述传输模块602还用于：与用户面功能实体之间通过隧道信息进行数据传输。
可选的，所述传输模块602用于：和终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述传输模块602还用于：和会话管理功能实体之间进行非接入层会话管理消息的传输。
如图7所示，本发明实施例提供一种会话建立的会话管理功能实体，该会话管理功能实体包括：第二接收模块700，用于接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；第二执行模块701，用于向用户面功能实体指示下行数据传输的隧道信息。
可选的，所述第二接收模块700还用于：接收所述接入和移动性管理功能实体发送的所述接入和移动性管理功能实体的隧道信息。
可选的，所述下行数据传输的隧道信息为接入和移动性管理功能实体提供的隧道信息，或者所述会话管理功能实体的隧道信息。
可选的，所述第二执行模块701还用于：向所述接入和移动性管理功能实体指示所述会话的服务质量信息。
可选的，所述第二执行模块701还用于：所述会话管理功能实体向所述接入和移动性管理功能实体指示用户面功能实体的隧道信息。
可选的，所述第二执行模块701还用于：根据所述终端的会话上下文信息，确定会话类型为控制面会话。
可选的，所述第二执行模块701还用于：向所述接入和移动性管理功能实体指示该会话对应的用户面功能实体的隧道信息。
可选的，所述第二执行模块701还用于：与所述终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述第二执行模块701还用于：与用户面功能实体之间通过隧道信息进行数据传输。
如图8所示，本发明实施例提供一种会话建立的终端，该终端包括：发送模块800，用于终端向接入和移动性管理功能实体发送会话建立请求消息；第三执行模块801，用于与所述接入和移动性管理功能实体建立控制面会话；第二传输模块802，用于与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
可选的，所述第三执行模块801用于：在向接入和移动性管理功能实体发送会话建立请求消息之前，在注册过程中与所述接入和移动性管理功能实体协商确定会话类型为控制面会话。
可选的，所述发送模块800用于：在接收到所述接入和移动性管理功能实体之间发送的非接入层响应消息之后，向所述接入和移动性管理功能实体发送非接入层确认消息。
可选的，所述第二传输模块802用于：所述终端与所述接入和移动性管理功能实体之间通过非接入层移动性管理消息进行数据传输。
可选的，所述第二传输模块802用于：所述终端与所述接入和移动性管理功能实体之间通过非接入层会话管理消息进行数据传输。
本发明实施例提供一种会话建立的可读存储介质，包括程序代码，当所述程序代码在计算设备上运行时，所述程序代码用于使所述计算设备执行接入和移动性管理功能实体任一方法的步骤或会话管理功能实体任一方法的步骤或终端任一方法的步骤。
基于同一发明构思，本发明实施例中还提供了会话建立的接入和移动性管理功能实体的方法，由于该方法对应的设备是本发明实施例会话建立的系统中的接入和移动性管理功能实体，并且该方法解决问题的原理与该设备相似，因此该方法的实施可以参见系统的实施，重复之处不再赘述。
如图9所示，本发明实施例提供一种会话建立的接入和移动性管理功能实体的方法：
步骤900、接入和移动性管理功能实体接收终端发送的会话建立请求；
步骤901、所述接入和移动性管理功能实体确定为终端建立控制面会话；
步骤902、所述接入和移动性管理功能实体向会话管理功能实体指示为所述终端建立控制面会话；
步骤903、所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输；
可选的，所述接入和移动性管理功能实体确定为终端建立控制面会话，包括：
所述接入和移动性管理功能实体在注册过程中与终端协商确定会话类型为控制面会话。
可选的，所述接入和移动性管理功能实体向会话管理功能实体指示为所述终端建立控制面会话，还包括：
所述接入和移动性管理功能实体向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息。
可选的，所述接入和移动性管理功能实体向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息，包括：
所述接入和移动性管理功能实体的隧道信息用于用户面功能实体向接入和移动性管理功能实体的隧道信息发送下行数据。
可选的，所述接入和移动性管理功能实体向会话管理功能实体指示为所述终端建立控制面会话，还包括：
所述接入和移动性管理功能实体接收所述会话管理功能实体指示的用户面功能实体的隧道信息。
可选的，所述用户面功能实体的隧道信息用于所述接入和移动性管理功能实体向用户面功能实体的隧道信息发送上行数据。
可选的，所述接入和移动性管理功能实体接收所述会话管理功能实体指示的用户面功能实体的隧道信息，还包括：
所述接入和移动性管理功能实体接收所述会话管理功能实体指示的所述会话的服务质量信息。
可选的，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，包括：
所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据 传输。
可选的，所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输，还包括：
所述接入和移动性管理功能实体与用户面功能实体之间通过隧道信息进行数据传输。
可选的，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，包括：
所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输，还包括：
所述接入和移动性管理功能实体和会话管理功能实体之间进行非接入层会话管理消息的传输。
基于同一发明构思，本发明实施例中还提供了会话建立的会话管理功能实体的方法，由于该方法对应的设备是本发明实施例会话建立的系统中的会话管理功能实体，并且该方法解决问题的原理与该设备相似，因此该方法的实施可以参见系统的实施，重复之处不再赘述。
如图10所示，本发明实施例提供一种会话建立的会话管理功能实体的方法：
步骤1000、会话管理功能实体接收终端发送的会话建立请求；
步骤1001、所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；
步骤1002、所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息。
可选的，所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息，还包括：
所述会话管理功能实体接收所述接入和移动性管理功能实体发送的所述接入和移动性管理功能实体的隧道信息。
可选的，所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息，包括：
所述下行数据传输的隧道信息为接入和移动性管理功能实体提供的隧道信息，或者所述会话管理功能实体的隧道信息。
可选的，所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息，还包括：
所述会话管理功能实体向所述接入和移动性管理功能实体指示所述会话的服务质量信息。
可选的，所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息，还包括：
所述会话管理功能实体向所述接入和移动性管理功能实体指示用户面功能实体的隧道信息。
可选的，所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息，还包括：
所述会话管理功能实体根据所述终端的会话上下文信息，确定会话类型为控制面会 话。
可选的，所述会话管理功能实体确认会话类型为控制面会话，还包括：
所述会话管理功能实体向所述接入和移动性管理功能实体指示该会话对应的用户面功能实体的隧道信息。
可选的，所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息，还包括：
所述会话管理功能实体与所述终端之间通过非接入层会话管理消息进行数据传输。
可选的，所述会话管理功能实体与所述终端之间通过非接入层会话管理消息进行数据传输，还包括：
所述会话管理功能实体与用户面功能实体之间通过隧道信息进行数据传输。
基于同一发明构思，本发明实施例中还提供了会话建立的终端的方法，由于该方法对应的设备是本发明实施例会话建立的系统中的在终端，并且该方法解决问题的原理与该设备相似，因此该方法的实施可以参见系统的实施，重复之处不再赘述。
如图11所示，本发明实施例提供一种会话建立终端的方法，该方法包括：
步骤1100、终端向接入和移动性管理功能实体发送会话建立请求消息；
步骤1101、所述终端与所述接入和移动性管理功能实体建立控制面会话；
步骤1102、所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
可选的，所述终端向接入和移动性管理功能实体发送会话建立请求消息之前，包括：
所述终端在注册过程中与所述接入和移动性管理功能实体协商确定会话类型为控制面会话。
可选的，所述终端与所述接入和移动性管理功能实体建立控制面会话，包括：
所述终端在接收到所述接入和移动性管理功能实体之间发送的非接入层响应消息之后，所述终端向所述接入和移动性管理功能实体发送非接入层确认消息。
可选的，所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输，包括：
所述终端与所述接入和移动性管理功能实体之间通过非接入层移动性管理消息进行数据传输。
可选的，所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输，包括：
所述终端与所述接入和移动性管理功能实体之间通过非接入层会话管理消息进行数据传输。
如图12所示，本发明实施例提供接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输的完整流程图(下述中接入和移动性管理功能实体即AMF实体、会话SMF实体即会话管理功能实体、UPF实体即用户面功能实体)：
步骤1200、终端向AMF实体发送PDU会话建立请求；
步骤1201、AMF实体向会话管理功能实体发送会话管理功能服务请求消息(包含AMF隧道信息))(Nsmf_PDUSession_CreateSMRequest；
步骤1202、SMF实体向UDM请求服务；
步骤1203、SMF实体向PCF请求服务；
步骤1204、SMF实体向UPF实体发送N4会话建立请求(包含AMF隧道信息)(N4Session Establishment)；
步骤1205、UPF实体向SMF实体返回N4会话建立请求响应(N4Session Estbl Resp)；
步骤1206、SMF实体向AMF实体返回会话的质量服务消息(包含UPF隧道信息)(Nsmf_PDUSession_CreateSMContextResp)；
步骤1207、AMF实体向RNA实体发送N2建立请求消息(N2msg)；
步骤1208、RAN实体通过RRC消息向终端转发NAS message(RRC msg)；
步骤1209、终端通过RRC消息向RAN发送PDU会话建立响应消息(RRC msg)；
步骤1210、RAN实体通过N2消息向AMF实体转发NAS响应消息(N2msg)；
步骤1211、PDU会话建立完成后，AMF和终端之间通过非接入层移动性管理消息进行数据传输。
如图13所示，本发明实施例提供基于接入和移动性管理功能实体和终端之间进行下行数据传输的完整流程图(下述中接入和移动性管理功能实体即AMF实体、会话SMF实体即会话管理功能实体、UPF实体即用户面功能实体)：
步骤1300、UPF实体向SMF实体发送数据通知请求消息(Data Notification)；
步骤1301、SMF实体发送AMF服务请求消息；
步骤1302、AMF实体通过的SMF服务请求消息；
步骤1303、SMF实体向UPF实体发起N4过程(N4Session Update)；
步骤1304、UPF实体将下行数据发送给AMF(N4Session Update)；
步骤1305、AMF实体向终端发起寻呼(Paging)；
步骤1306、终端通过RRC消息向RAN发送会话建立消息(RRC msg)；
步骤1307、RAN实体通过N2消息向AMF实体发送NAS消息(N2msg)；
步骤1308、AMF实体对下行数据进行加密和完整性保护；
步骤1309、AMF实体通过N2消息向RAN实体发送NAS消息响应消息(NAS msg)；
步骤1310、RAN实体通过RRC消息向终端返回控制面会话建立响应消息(RRC Msg)。
如图14所示，本发明实施例提供接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输的完整流程图(下述中接入和移动性管理功能实体即AMF实体、会话SMF实体即会话管理功能实体、UPF即用户面功能实体)：
步骤1400、终端向AMF实体发送PDU会话建立请求；
步骤1401、AMF实体向SMF实体发送SMF服务请求消息(Nsmf_PDUSession_CreateSMRequest)；
步骤1402、SMF实体向UDM请求服务；
步骤1403、SMF实体向PCF请求服务；
步骤1404、SMF实体向UPF实体发送N4会话建立请求(N4Session Establishment(SMF隧道信息))；
步骤1405、UPF实体向SMF实体返回N4会话建立请求响应(N4Session Estbl Resp)；
步骤1406、SMF实体向AMF实体发送会话的质量服务消息(Nsmf_PDUSession_CreateSMContextResp)；
步骤1407、AMF实体向RNA实体发送N2建立请求消息(N2msg)；
步骤1408、RAN实体通过RRC消息向终端转发NAS message(RRC msg)；
步骤1409、终端通过RRC消息向RAN发送PDU会话建立响应消息(RRC msg)；
步骤1410、RAN实体通过N2消息向AMF实体转发NAS响应消息(N2msg)；
步骤1411、PDU会话建立完成后，AMF和终端之间通过非接入层会话管理消息进行数据传输。
如图15所示，本发明实施例提供基于接入和移动性管理功能实体、会话管理功能实体和终端之间进行下行数据传输的完整流程图(下述中AMF实体即接入和移动性管理功能实体、SMF实体即会话管理功能实体、UPF即用户面功能实体)：
步骤1500、UPF实体向SMF实体发送数据通知请求消息(Data Notification)；
步骤1501、SMF实体向UPF实体发起N4过程(N4Session Update)；
步骤1502、UPF实体将下行数据发送给SMF实体(DL data)；
步骤1503、SMF实体发送AMF服务请求消息(Nsmf_DataTransReq/Resp(N1SM))；
步骤1504、SMF实体将下行数据发送给AMF实体(DL data)；
步骤1505、AMF实体向终端发起寻呼(Paging)；
步骤1506、终端通过RRC消息向RAN发送会话建立消息(RRC msg)；
步骤1507、RAN实体通过N2消息向AMF实体发送NAS消息(N2msg)；
步骤1508、AMF通过N2消息向RAN实体发送NAS消息响应消息(NAS msg)；
步骤1509、RAN实体通过RRC消息返回控制面会话建立响应消息(RRC Msg)。
以上参照示出根据本申请实施例的方法、装置(系统)和/或计算机程序产品的框图和/或流程图描述本申请。应理解，可以通过计算机程序指令来实现框图和/或流程图示图的一个块以及框图和/或流程图示图的块的组合。可以将这些计算机程序指令提供给通用计算机、专用计算机的处理器和/或其它可编程数据处理装置，以产生机器，使得经由计算机处理器和/或其它可编程数据处理装置执行的指令创建用于实现框图和/或流程图块中所指定的功能/动作的方法。
相应地，还可以用硬件和/或软件(包括固件、驻留软件、微码等)来实施本申请。更进一步地，本申请可以采取计算机可使用或计算机可读存储介质上的计算机程序产品的形式，其具有在介质中实现的计算机可使用或计算机可读程序代码，以由指令执行系统来使用或结合指令执行系统而使用。在本申请上下文中，计算机可使用或计算机可读介质可以是任意介质，其可以包含、存储、通信、传输、或传送程序，以由指令执行系统、装置或设备使用，或结合指令执行系统、装置或设备使用。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (54)

  1. 一种会话建立的方法，其特征在于，该方法包括：
    接入和移动性管理功能实体接收终端发送的会话建立请求；
    所述接入和移动性管理功能实体确定为所述终端建立控制面会话；
    所述接入和移动性管理功能实体向会话管理功能实体指示为所述终端建立控制面会话；
    所述接入和移动性管理功能实体和所述终端之间通过非接入层消息进行数据传输。
  2. 如权利要求1所述的方法，其特征在于，所述接入和移动性管理功能实体确定为所述终端建立控制面会话，包括：
    所述接入和移动性管理功能实体在对所述终端进行的注册过程中与所述终端协商确定会话类型为控制面会话。
  3. 如权利要求1所述的方法，其特征在于，还包括：
    所述接入和移动性管理功能实体向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息。
  4. 如权利要求3所述的方法，其特征在于，所述接入和移动性管理功能实体的隧道信息被用户面功能实体用于向接入和移动性管理功能实体发送下行数据。
  5. 如权利要求1所述的方法，其特征在于，还包括：
    所述接入和移动性管理功能实体接收所述会话管理功能实体指示的用户面功能实体的隧道信息。
  6. 如权利要求5所述的方法，其特征在于，所述用户面功能实体的隧道信息被所述接入和移动性管理功能实体用于向用户面功能实体发送上行数据。
  7. 如权利要求5所述的方法，其特征在于，还包括：
    所述接入和移动性管理功能实体接收所述会话管理功能实体指示的所述会话的服务质量信息。
  8. 如权利要求1所述的方法，其特征在于，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，包括：
    所述接入和移动性管理功能实体和终端之间通过非接入层移动性管理消息进行数据传输。
  9. 如权利要求8所述的方法，其特征在于，还包括：
    所述接入和移动性管理功能实体与用户面功能实体之间通过隧道进行数据传输。
  10. 如权利要求1所述的方法，其特征在于，所述接入和移动性管理功能实体和终端之间通过非接入层消息进行数据传输，包括：
    所述接入和移动性管理功能实体和终端之间通过非接入层会话管理消息进行数据传输。
  11. 如权利要求10所述的方法，其特征在于，还包括：
    所述接入和移动性管理功能实体和会话管理功能实体之间进行非接入层会话管理消息的传输。
  12. 一种会话建立的方法，其特征在于，该方法包括：
    会话管理功能实体接收终端发送的会话建立请求；
    所述会话管理功能实体接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；
    所述会话管理功能实体向用户面功能实体指示下行数据传输的隧道信息。
  13. 如权利要求12所述的方法，其特征在于，还包括：
    所述会话管理功能实体接收所述接入和移动性管理功能实体发送的所述接入和移动性管理功能实体的隧道信息。
  14. 如权利要求12所述的方法，其特征在于，所述下行数据传输的隧道信息为接入和移动性管理功能实体提供的隧道信息；或者为所述会话管理功能实体的隧道信息。
  15. 如权利要求12所述的方法，其特征在于，还包括：
    所述会话管理功能实体向所述接入和移动性管理功能实体指示请求建立的会话的服务质量信息。
  16. 如权利要求12所述的方法，其特征在于，还包括：
    所述会话管理功能实体向所述接入和移动性管理功能实体指示用户面功能实体的隧道信息。
  17. 如权利要求12所述的方法，其特征在于，还包括：
    所述会话管理功能实体根据所述终端的会话上下文信息，确定会话类型为控制面会话。
  18. 如权利要求17所述的方法，其特征在于，还包括：
    所述会话管理功能实体向所述接入和移动性管理功能实体指示请求建立的会话对应的用户面功能实体的隧道信息。
  19. 如权利要求12所述的方法，其特征在于，还包括：
    所述会话管理功能实体与所述终端之间通过非接入层会话管理消息进行数据传输。
  20. 如权利要求19所述的方法，其特征在于，还包括：
    所述会话管理功能实体与用户面功能实体之间通过隧道信息进行数据传输。
  21. 一种会话建立的方法，其特征在于，该方法包括：
    终端向接入和移动性管理功能实体发送会话建立请求消息；
    所述终端与所述接入和移动性管理功能实体建立控制面会话；
    所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
  22. 如权利要求21所述的方法，其特征在于，所述终端向接入和移动性管理功能实体发送会话建立请求消息之前，包括：
    所述终端在注册过程中与所述接入和移动性管理功能实体协商确定会话类型为控制面会话。
  23. 如权利要求21所述的方法，其特征在于，所述终端与所述接入和移动性管理功能实体建立控制面会话，包括：
    所述终端在接收到所述接入和移动性管理功能实体发送的非接入层响应消息之后，所述终端向所述接入和移动性管理功能实体发送非接入层确认消息。
  24. 如权利要求21所述的方法，其特征在于，所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输，包括：
    所述终端与所述接入和移动性管理功能实体之间通过非接入层移动性管理消息进行数据传输。
  25. 如权利要求21所述的方法，其特征在于，所述终端与所述接入和移动性管理功能实体通过控制面会话进行数据传输，包括：
    所述终端与所述接入和移动性管理功能实体之间通过非接入层会话管理消息进行数据传输。
  26. 一种会话建立的接入和移动性管理功能实体，其特征在于，所述接入和移动性管理功能实体包括处理器、存储器和收发机，其中，处理器，用于读取存储器中的程序并执行：
    通过所述收发机接收终端发送的会话建立请求；确定为所述终端建立控制面会话；通过所述收发机向会话管理功能实体指示为所述终端建立控制面会话；通过所述收发机和终端之间通过非接入层消息进行数据传输。
  27. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述处理器具体用于：
    在对所述终端进行的注册过程中与所述终端协商确定会话类型为控制面会话。
  28. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机向所述会话管理功能实体指示所述接入和移动性管理功能实体的隧道信息。
  29. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述接入和移动性管理功能实体的隧道信息被用户面功能实体用于向接入和移动性管理功能实体发送下行数据。
  30. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述处理器还具体用于：
    接收所述会话管理功能实体指示的用户面功能实体的隧道信息。
  31. 如权利要求30所述的接入和移动性管理功能实体，其特征在于，所述用户面功能实体的隧道信息被所述接入和移动性管理功能实体用于向用户面功能实体发送上行数据。
  32. 如权利要求30所述的接入和移动性管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机接收所述会话管理功能实体指示的所述会话的服务质量信息。
  33. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述处理器具体用于：
    通过所述收发机和终端之间通过非接入层移动性管理消息进行数据传输。
  34. 如权利要求32所述的接入和移动性管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机，与用户面功能实体之间通过隧道进行数据传输。
  35. 如权利要求26所述的接入和移动性管理功能实体，其特征在于，所述处理器具体用于：
    通过所述收发机，和终端之间通过非接入层会话管理消息进行数据传输。
  36. 如权利要求35所述的接入和移动性管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机，和会话管理功能实体之间进行非接入层会话管理消息的传输。
  37. 一种会话建立的会话管理功能实体，其特征在于，该接入和移动性管理功能实体包括处理器、存储器和收发机，其中，处理器，用于读取存储器中的程序并执行：
    通过所述收发机接收终端发送的会话建立请求；通过所述收发机接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；通过所述收发机向用户面功能实体指示下行数据传输的隧道信息。
  38. 如权利要求37所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机接收所述接入和移动性管理功能实体发送的所述接入和移动性管理功能实体的隧道信息。
  39. 如权利要求37所述的会话管理功能实体，其特征在于，所述下行数据传输的隧道信息为接入和移动性管理功能实体提供的隧道信息，或者为所述会话管理功能实体的隧道信息。
  40. 如权利要求37所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机向所述接入和移动性管理功能实体指示请求建立的会话的服务质量信息。
  41. 如权利要求37所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机向所述接入和移动性管理功能实体指示用户面功能实体的隧道信息。
  42. 如权利要求37所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    根据所述终端的会话上下文信息，确定会话类型为控制面会话。
  43. 如权利要求42所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机向所述接入和移动性管理功能实体指示请求建立的会话对应的用户面功能实体的隧道信息。
  44. 如权利要求37所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机，与所述终端之间通过非接入层会话管理消息进行数据传输。
  45. 如权利要求44所述的会话管理功能实体，其特征在于，所述处理器还具体用于：
    通过所述收发机，与用户面功能实体之间通过隧道信息进行数据传输。
  46. 一种会话建立的终端，其特征在于，该终端包括处理器、存储器和收发机，其中，处理器，用于读取存储器中的程序并执行：
    通过所述收发机向接入和移动性管理功能实体发送会话建立请求消息；
    通过所述收发机与所述接入和移动性管理功能实体建立控制面会话；
    通过所述收发机与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
  47. 如权利要求46所述的终端，其特征在于，所述处理器具体用于：
    在向接入和移动性管理功能实体发送会话建立请求消息之前，在对所述终端进行的注册过程中与所述接入和移动性管理功能实体协商确定会话类型为控制面会话。
  48. 如权利要求46所述的终端，其特征在于，所述处理器具体用于：
    在接收到所述接入和移动性管理功能实体之间发送的非接入层响应消息之后，通过所述收发机向所述接入和移动性管理功能实体发送非接入层确认消息。
  49. 如权利要求46所述的终端，其特征在于，所述处理器具体用于：
    通过所述收发机，与所述接入和移动性管理功能实体之间通过非接入层移动性管理消息进行数据传输。
  50. 如权利要求46所述的终端，其特征在于，所述处理器具体用于：
    通过所述收发机，与所述接入和移动性管理功能实体之间通过非接入层会话管理消息进行数据传输。
  51. 一种会话建立的接入和移动性管理功能实体，其特征在于，该接入和移动性管理功能实体包括：
    第一接收模块，接收终端发送的会话建立请求；
    第一执行模块，用于确定为所述终端建立控制面会话；向会话管理功能实体指示为所述终端建立控制面会话；
    传输模块，用于和所述终端之间通过非接入层消息进行数据传输。
  52. 一种会话建立的会话管理功能实体，其特征在于，该会话管理功能实体包括：
    第二接收模块，用于接收终端发送的会话建立请求；接收接入和移动性管理功能实体发送的为所述终端建立控制面会话的指示信息；
    第二执行模块，用于向用户面功能实体指示下行数据传输的隧道信息。
  53. 一种会话建立的终端，其特征在于，该终端包括：
    发送模块，用于终端向接入和移动性管理功能实体发送会话建立请求消息；
    第三执行模块，用于与所述接入和移动性管理功能实体建立控制面会话；
    第二传输模块，用于与所述接入和移动性管理功能实体通过控制面会话进行数据传输。
  54. 一种会话建立可读存储介质，其特征在于，包括程序代码，当所述程序代码在计算设备上运行时，所述程序代码用于使所述计算设备执行权利要求1～11任一所述方法的步骤或权利要求12～20任一所述方法或权利要求21～25任一所述方法的步骤。
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