WO2022247875A1 - Procédé, appareil et système permettant d'établir une connexion - Google Patents

Procédé, appareil et système permettant d'établir une connexion Download PDF

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Publication number
WO2022247875A1
WO2022247875A1 PCT/CN2022/095084 CN2022095084W WO2022247875A1 WO 2022247875 A1 WO2022247875 A1 WO 2022247875A1 CN 2022095084 W CN2022095084 W CN 2022095084W WO 2022247875 A1 WO2022247875 A1 WO 2022247875A1
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WIPO (PCT)
Prior art keywords
user plane
plane function
traffic detection
session
address
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PCT/CN2022/095084
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English (en)
Chinese (zh)
Inventor
胡翔
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华为技术有限公司
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Publication of WO2022247875A1 publication Critical patent/WO2022247875A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels

Definitions

  • the present invention relates to wireless communication technology, in particular to a method, device and system for establishing a connection.
  • TDF Traffic Detection Function
  • TDF-C traffic detection control plane function
  • TDF User plane function TDF-U
  • PCRF policy and charging rules function
  • PCEF policy and charging enforcement function
  • the network element of the core network only copies the session information to the TDF-C device, but does not perceive whether the TDF-C and other devices successfully establish a corresponding session based on the received information.
  • a special router needs to be deployed between the gateway node and the TDF-U, so that the data between the gateway node and the Internet can be routed to the corresponding TDF-U, which increases the cost of network deployment.
  • the present application proposes a method, device and system for establishing a connection, so that the core network can determine whether the corresponding TDF session or user plane path is successfully established, and can simplify routing deployment costs.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the session management function sends the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function to the traffic detection user plane function, and the IP address corresponds to the first session of the terminal, the first The tunnel endpoint identifier is used to establish a downlink tunnel between the user plane function and the traffic detection user plane function, and the downlink tunnel is used to transmit the downlink data of the first session;
  • the session management function receives the second tunnel endpoint identifier of the traffic detection user plane function from the traffic detection user plane function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel is used for transmission Uplink data of the first session;
  • the session management function sends the second tunnel endpoint identifier to the user plane function.
  • the session management function may confirm whether the traffic detection user plane function has successfully established the first session by whether the tunnel endpoint identifier of the traffic detection user plane function is acquired.
  • the IP address and IP network segment routing mask of the terminal of the first session are released to the network by the traffic detection user plane function, so that the traffic detection user plane function can receive the data of the first session from the network, and detect the user interface through the traffic detection.
  • the tunnel between the user plane function and the user plane function forwards this data to the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the user plane function is an anchor user plane function.
  • the method also includes:
  • the session management function subscribes to the information of the traffic detection user plane function
  • the session management function selects the traffic detection user plane function according to the information.
  • the IP network segment routing mask is used to advertise the traffic detection user plane function to the network, and the IP address belongs to the address range indicated by the IP network segment routing mask.
  • the method also includes:
  • the session management function receives the IP address and IP segment routing mask from the user plane function; or,
  • the session management function determines the IP address and IP network segment routing mask
  • the session management function sends the IP address and the routing mask of the IP network segment to the user plane function.
  • the session management function sends the third tunnel endpoint identifier of the user plane function to the access network node or the intermediate user plane function, and the third tunnel endpoint identifier is used to establish an uplink tunnel between the access network node or the intermediate user plane node and the user plane node , the uplink tunnel is used to transmit uplink data of the first session.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the traffic detection user plane function receives from the session management function the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function, the IP address corresponds to the first session of the terminal, the first The tunnel endpoint identifier is used to establish a downlink tunnel between the user plane function and the traffic detection user plane function, and the downlink tunnel is used to transmit the downlink data of the first session;
  • the traffic detection user plane function publishes the IP address and the routing mask of the IP network segment to the network
  • the traffic detection user plane function sends the second tunnel endpoint identifier of the traffic detection user plane function to the session management function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel is used for transmission Uplink data of the first session.
  • the traffic detection user plane function may feed back the tunnel endpoint identifier of the traffic detection user plane function to the session management function, so that the session management function confirms that the traffic detection user plane function has successfully established the first session.
  • the IP address and IP network segment routing mask of the terminal of the first session are released to the network by the traffic detection user plane function, so that the traffic detection user plane function can receive the data of the first session from the network, and detect the user interface through the traffic detection.
  • the tunnel between the user plane function and the user plane function forwards this data to the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the user plane function is an anchor user plane function.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the session management function sends the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function to the traffic detection control plane function, the IP address corresponds to the first session of the terminal, the first The tunnel endpoint identifier is used to establish a downlink tunnel between the user plane function and the traffic detection user plane function, the downlink tunnel is used to transmit the downlink data of the first session, and the traffic detection control plane function is used to manage the traffic detection user plane function;
  • the session management function receives the second tunnel endpoint identifier of the traffic detection user plane function from the traffic detection control plane function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel is used for transmission Uplink data of the first session;
  • the session management function sends the second tunnel endpoint identifier to the user plane function.
  • the session management function may confirm whether the traffic detection user plane function has successfully established the first session by whether the tunnel endpoint identifier of the traffic detection user plane function is obtained.
  • the IP address and IP network segment routing mask of the terminal of the first session are released to the network by the traffic detection user plane function, so that the traffic detection user plane function can receive the data of the first session from the network, and detect the user interface through the traffic detection.
  • the tunnel between the user plane function and the user plane function forwards this data to the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the user plane function is an anchor user plane function.
  • the method also includes:
  • the session management function subscribes to the information of the traffic detection control plane function
  • the session management function selects the traffic detection control plane function according to the information.
  • the method also includes:
  • the session management function sends session establishment information to the traffic detection control plane function, and the session establishment information includes one or more of the following information: terminal device identifier, access point name APN, data network name DNN, single network slice selection support information S-NSSAI.
  • the method also includes:
  • the session management function receives a subscription request from the traffic detection control plane function, and the subscription request is used to subscribe to session information;
  • the session management function sends session establishment information to the traffic detection control plane function including:
  • the session management function In response to the subscription request, the session management function sends session establishment information to the traffic inspection control plane function.
  • the IP network segment routing mask is used to advertise the traffic detection user plane function to the network, and the IP address belongs to the address range indicated by the IP network segment routing mask.
  • the method also includes:
  • the session management function receives the IP address and IP segment routing mask from the user plane function; or,
  • the session management function determines the IP address and IP network segment routing mask
  • the session management function sends the IP address and the routing mask of the IP network segment to the user plane function.
  • the method also includes:
  • the session management function sends the third tunnel endpoint identifier of the user plane function to the access network node or the intermediate user plane function, and the third tunnel endpoint identifier is used to establish an uplink tunnel between the access network node or the intermediate user plane node and the user plane node , the uplink tunnel is used to transmit uplink data of the first session.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the traffic detection control plane function receives from the session management function the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function, the IP address corresponds to the first session of the terminal, the first The tunnel endpoint identifier is used to establish a downlink tunnel between the user plane function and the traffic detection user plane function, and the downlink tunnel is used to transmit the downlink data of the first session;
  • the traffic detection control plane function sends the IP address, the IP network segment routing mask, and the first tunnel endpoint identifier to the traffic detection user plane function;
  • the traffic detection control plane function sends the second tunnel endpoint identifier of the traffic detection user plane function to the session management function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel is used for transmission Uplink data of the first session.
  • the traffic detection control plane function can feed back the tunnel endpoint identifier of the traffic detection user plane function to the session management function, so that the session management function can confirm that the traffic detection control plane function and the traffic detection user plane function have successfully established the first a session.
  • the IP address and IP network segment routing mask of the terminal in the first session are sent to the traffic detection user plane function, and are released to the network by the traffic detection user plane function, so that the traffic detection user plane function can receive the first session from the network.
  • the data of a session is forwarded to the user plane function through the tunnel between the traffic detection user plane function and the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the method also includes:
  • the traffic detection control plane function receives the second tunnel endpoint identifier from the traffic detection user plane function; or,
  • the traffic detection control plane function generates a second tunnel endpoint identifier for the first session
  • the traffic detection control plane function sends the second tunnel endpoint identifier to the traffic detection user plane function.
  • the user plane function is an anchor user plane function.
  • the method also includes:
  • the traffic detection control plane function subscribes to the information of the traffic detection user plane function
  • the traffic detection control plane function selects the traffic detection user plane function according to the information.
  • the method also includes:
  • the traffic detection control plane function receives session establishment information from the session management function, and the session establishment information includes one or more of the following information: terminal device identifier, access point name APN, data network name DNN, single network slice selection support information S-NSSAI.
  • the method also includes:
  • the traffic inspection control plane function sends a subscription request to the session management function, where the subscription request is used to subscribe to session information.
  • the IP network segment routing mask is used to advertise the traffic detection user plane function to the network, and the IP address belongs to the address range indicated by the IP network segment routing mask.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the traffic detection user plane function receives the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function from the traffic detection control plane function, and the IP address corresponds to the first session of the terminal,
  • the first tunnel endpoint identifier is used to establish a downlink tunnel between the user plane function and the traffic detection user plane function, and the downlink tunnel is used to transmit downlink data of the first session;
  • the traffic detection user plane function publishes the IP address and the routing mask of the IP network segment to the network
  • the traffic detection user plane function sends the second tunnel endpoint identifier of the traffic detection user plane function to the traffic detection control plane function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel uses used to transmit the uplink data of the first session.
  • the traffic detection user plane function may feed back its tunnel endpoint identifier to make the session management function confirm that the traffic detection user plane function has successfully established the first session.
  • the IP address and IP network segment routing mask of the terminal of the first session are released to the network by the traffic detection user plane function, so that the traffic detection user plane function can receive the data of the first session from the network, and detect the user interface through the traffic detection.
  • the tunnel between the user plane function and the user plane function forwards this data to the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the traffic detection user plane function receives from the traffic detection control plane function the Internet Protocol IP address of the terminal, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function include:
  • the traffic detection user plane function receives from the traffic detection control plane function an IP address, an IP network segment routing mask, and a first tunnel endpoint identifier from the session management function;
  • the traffic detection user plane function sends the second tunnel endpoint identifier of the traffic detection user plane function to the traffic detection control plane function including:
  • the traffic detection user plane function sends the second tunnel endpoint identifier to the session management function through the traffic detection control plane function.
  • the user plane function is an anchor user plane function.
  • the embodiment of the present application provides a method for establishing a connection, the method including:
  • the user plane function obtains the terminal's Internet Protocol IP address, the IP network segment routing mask corresponding to the IP address, and the first tunnel endpoint identifier of the user plane function.
  • the IP address corresponds to the first session of the terminal, and the first tunnel endpoint identifier is used for transmission Downlink data of the first session;
  • the user plane function receives the second tunnel endpoint identifier of the traffic detection user plane function from the session management function, and the second tunnel endpoint identifier is used to establish an uplink tunnel between the user plane function and the traffic detection user plane function, and the uplink tunnel is used to transmit the first The uplink data of the session.
  • the traffic detection user plane function publishes it to the network, so that the traffic detection user plane function can receive from the network
  • the data of the first session is forwarded to the user plane function through the traffic detection user plane function and the tunnel between the user plane function.
  • the traffic detection user plane function is deployed as a hop in the core network user plane, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying the traffic detection user plane function.
  • the traffic detection user plane function routes the data of the first session, that is, there is no need to modify the data network.
  • the IP network segment routing mask is used to advertise the traffic detection user plane function to the network, and the IP address belongs to the address range indicated by the IP network segment routing mask.
  • the user plane function obtains the Internet protocol IP address of the terminal and the routing mask of the IP network segment corresponding to the IP address, including:
  • the user plane function determines the IP address and the routing mask of the IP network segment
  • the user plane function sends the IP address and the IP network segment routing mask to the session management function; or,
  • the user plane function receives the IP address and IP network segment routing mask from the session management function.
  • the first tunnel endpoint identifier of the user plane function obtained by the user plane function includes:
  • the user plane function generates a first tunnel endpoint identifier for the first session
  • the user plane function sends the first tunnel endpoint identifier to the session management function; or,
  • the user plane function receives the first tunnel endpoint identifier from the session management function.
  • the method also includes:
  • the user plane function obtains the third tunnel endpoint identifier of the second user plane function, and the third tunnel endpoint identifier is used to establish an uplink tunnel between an access network node or an intermediate user plane node and a user plane node, and the uplink tunnel is used to transmit the first The uplink data of a session.
  • the user plane function is an anchor user plane function.
  • the embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method according to the first aspect.
  • the embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method according to the second aspect.
  • the embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method of the third aspect.
  • an embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method in the fourth aspect.
  • the embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method according to the fifth aspect.
  • the embodiment of the present application provides a communication device, including a processor and a memory, and the processor is configured to execute a computer program or instruction stored in the memory, so that the communication device performs the method according to the sixth aspect.
  • the embodiment of the present application provides a communication device, which is configured to realize the functions of the communication device in the seventh aspect or the communication device in the ninth aspect.
  • the communication device in the thirteenth aspect includes corresponding modules, units, or means (means) for realizing the above functions, and the modules, units, or means can be implemented by hardware, software, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the embodiment of the present application provides a communication device, which is used to implement the functions of the communication device in the eighth aspect, the eleventh aspect, or the communication device in the twelfth aspect.
  • the communication device of the fourteenth aspect includes corresponding modules, units, or means (means) for realizing the above functions.
  • the modules, units, or means can be implemented by hardware, software, or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the embodiment of the present application provides a communication device, which is used to implement the communication device in the tenth aspect.
  • the communication device of the fifteenth aspect includes corresponding modules, units, or means (means) for realizing the above functions, and the modules, units, or means can be implemented by hardware, software, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the embodiment of the present application provides a communication system, including the communication device according to the eighth aspect or the thirteenth aspect, and the ninth aspect or the fourteenth aspect.
  • the communication system further includes the communication device of the fifteenth aspect.
  • the embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is run on the computer, the computer executes the computer program described in the first aspect to the seventh aspect. any method.
  • the embodiment of the present application provides a computer program product, which is characterized in that the computer program product includes computer program code, and when the computer program code is run on a computer, any of the first to seventh aspects A method is executed.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2A is a schematic flow diagram of establishing a connection provided by an embodiment of the present application.
  • FIG. 2B is a schematic flow diagram of another connection establishment provided by the embodiment of the present application.
  • FIG. 3 is a schematic flow diagram of obtaining TD-SMF information provided by an embodiment of the present application.
  • FIG. 4 is a schematic flow diagram of obtaining TD-UPF information provided by an embodiment of the present application.
  • FIG. 5 is a schematic flow diagram of another connection establishment provided by the embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the method of the embodiment of the present application can be applied to a long term evolution technology (long term evolution, LTE) system, a long term evolution advanced technology (long term evolution-advanced, LTE-A) system, an enhanced long term evolution technology (enhanced long term evolution-advanced , eLTE), the fifth generation (the 5th Generation, 5G) mobile communication system new air interface (New Radio, NR) system, can also be extended to similar wireless communication systems, such as wireless-fidelity (wireless-fidelity, WiFi), Worldwide interoperability for microwave access (WIMAX), and cellular systems related to the 3rd generation partnership project (3gpp).
  • FIG. 1 is a network architecture 100 applied to an embodiment of the present application, and each network element that may be involved in the network architecture is described separately.
  • Terminal equipment can include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of terminals, mobile stations (mobile station, MS), Terminal (terminal), user equipment (user equipment, UE), soft terminal, etc.
  • wireless access network radio access network, (R)AN) network element: used to provide network access functions for authorized terminal equipment in a specific area, and can use transmission tunnels of different qualities according to the level of terminal equipment and business requirements. .
  • (R)AN network elements can manage wireless resources, provide access services for terminal devices, and then complete the forwarding of control signals and terminal device data between terminal devices and the core network.
  • (R)AN network elements can also be understood as traditional networks base station in .
  • network element may also be referred to as an entity, device, device, or module, etc., which are not specifically limited in this application.
  • description of “network element” is omitted in some descriptions, for example, (R)AN network element is referred to as (R)AN, in this case, the “(R) ”) AN network element” should be understood as (R)AN network element or (R)AN entity, and the description of the same or similar situations will be omitted below.
  • User plane network element used for packet routing and forwarding and quality of service (QoS) processing of user plane data.
  • QoS quality of service
  • the user plane network element may be a user plane function (user plane function, UPF) network element.
  • UPF user plane function
  • the user plane network element may still be a UPF network element, or may have other names, which are not limited in this application.
  • a UPF may include an anchor UPF and an intermediate UPF.
  • the anchor UPF may be a protocol data unit (protocol data unit, PDU) session anchor (PDU session anchor, PSA) UPF (PSA-UPF) in FIG. 1 .
  • the intermediate UPF may be the intermediate UPF (intermediate UPF, I-UPF) in FIG. 1 .
  • Data network A network used to provide data transmission.
  • the data network may be a data network (data network, DN).
  • the data network may still be a DN, or may have other names, which are not limited in this application.
  • Access management network element mainly used for mobility management and access management, etc., and can be used to implement other functions in the mobility management entity (mobility management entity, MME) functions except session management, for example, lawful interception and access Access authorization/authentication and other functions.
  • mobility management entity mobility management entity, MME
  • session management for example, lawful interception and access Access authorization/authentication and other functions.
  • the access management network element may be an access and mobility management function (access and mobility management function, AMF) network element.
  • AMF access and mobility management function
  • the access management network element may still be an AMF network element, or may have other names, which are not limited in this application.
  • Session management network element mainly used for session management, network interconnection protocol (internet protocol, IP) address allocation and management of terminal equipment, selection of manageable user plane functions, endpoints of policy control and charging function interfaces, and downlink data notification, etc. .
  • IP network interconnection protocol
  • the session management network element may be a session management function (session management function, SMF) network element.
  • SMF session management function
  • the session management network element may still be an SMF network element, or may have other names, which are not limited in this application.
  • Policy control network element a unified policy framework for guiding network behavior, providing policy rule information, etc. for control plane functional network elements (such as AMF, SMF network elements, etc.).
  • the policy control network element may be a policy and charging rules function (policy and charging rules function, PCRF) network element.
  • policy control network element may be a policy control function (policy control function, PCF) network element.
  • policy control network element may still be a PCF network element, or may have other names, which are not limited in this application.
  • Data management network element used to process terminal device identification, access authentication, registration, and mobility management.
  • the data management network element may be a unified data management (unified data management, UDM) network element.
  • UDM unified data management
  • the unified data management may still be a UDM network element, or may have other names, which are not limited in this application.
  • Data network A network used to provide data transmission.
  • the data network may be (data network, DN).
  • the data network element may still be a DN, or may have other names, which are not limited in this application.
  • Traffic detection function used for application detection.
  • the traffic detection function can be divided into a traffic detection control plane function and a traffic detection user plane function.
  • the traffic detection control plane function can be a TD-SMF network element.
  • the traffic detection user plane function can be a TD-UPF network element, which can be understood as a special form of the user plane functional entity.
  • the TD-SMF element is used to manage the TD-UPF element.
  • the TD-SMF element can be deployed together with the SMF element, or the SMF element can be deployed with the function of the TD-SMF.
  • the TDF can be understood as the TD-UPF.
  • the traffic detection function may still include TD-SMF network elements and TD-UPF network elements, and may also have other names, which are not limited in this application.
  • network element may also be referred to as an entity, device, device, or module, etc., which are not specifically limited in this application.
  • SMF SMF network element
  • SMF SMF network element
  • the above-mentioned network element or function may be a network element in a hardware device, or a software function running on dedicated hardware, or a virtualization function instantiated on a platform (for example, a cloud platform).
  • FIG. 1 is only an exemplary network architecture described from the perspective of a service-oriented architecture, and the network architecture applicable to the embodiment of the present application is not limited thereto. Any network architecture that can realize the functions of the above-mentioned network elements is applicable to Example of this application.
  • network functional entities such as AMF, SMF, PCF, and UDM are called network function (Network Function, NF) network elements; or, in other network architectures, AMF, SMF, PCF, and UDM
  • AMF, SMF, PCF, and UDM A collection of such network elements can be called a control plane function (Control Plane Function, CPF) network element.
  • CPF Control Plane Function
  • each network element in the solution can be replaced by another network element with corresponding functions, which is not limited in this application.
  • FIG. 2A is a schematic flowchart of a method for establishing a connection proposed in this application.
  • the method shown in FIG. 2A may be applicable to a scenario where the SMF and the TD-SMF are deployed separately.
  • the SMF sends to the TD-SMF the IP address of the UE corresponding to session #1, the routing mask of the IP network segment corresponding to the IP address of the UE, and the UPF tunnel endpoint identifier allocated for session #1.
  • the TD-SMF receives the above information from the SMF.
  • the IP address of the UE corresponding to the session #1 is hereinafter referred to as the IP address of the UE for short. This IP address corresponds to session #1.
  • the IP address belongs to the address range indicated by the routing mask of the IP network segment.
  • the SMF can determine whether the session #1 needs TDF according to the configuration information.
  • the configuration information may include conditions requiring TDF, such as an access point name (APN), whether roaming, and the SMF determines whether the session #1 needs TDF according to whether the condition is met by the session #1.
  • APN access point name
  • Whether this session #1 needs TDF can be understood as whether it is necessary to select TD-SMF for this session #1, or whether it is necessary to need TD-UPF for this session #1, or whether it is necessary to send the session information of this session #1 to TD-SMF .
  • the SMF can generate or obtain the IP address of the UE and the corresponding IP network segment routing mask.
  • the SMF may receive a session establishment request from the UE to request the establishment of the above-mentioned session #1; the SMF selects a UPF for the session #1; the SMF allocates the UPF tunnel endpoint identifier for the session #1, or the SMF receives the UPF as the The tunnel endpoint identifier allocated by session #1; the IP address of the UE corresponding to the session #1 allocated by the SMF, or the IP address of the UE allocated by the UPF for the session #1 received by the SMF.
  • the SMF may receive a session establishment request from the UE to request the establishment of the above-mentioned session #1; the SMF selects a UPF for the session #1; the SMF allocates the UPF tunnel endpoint identifier for the session #1, or the SMF receives the UPF as the The tunnel endpoint identifier allocated by session #1; the IP address of the UE corresponding to the session #1 allocated by the SMF, or the IP address of the UE allocated by the UPF for the session #1 received by the S
  • the tunnel endpoint identifier of the UPF allocated for the session #1 in S201 is the tunnel endpoint identifier of the anchor UPF of the session #1.
  • the anchor UPF can be understood as the PSA-UPF, or the last UPF in the uplink user plane path of the session #1, or the UPF that allocates the IP address of the aforementioned UE.
  • the tunnel endpoint identifier of the UPF is used to establish a downlink tunnel between the UPF and the subsequent TD-UPF, and the downlink tunnel is used to transmit the downlink data of session #1, that is, the tunnel endpoint identifier is used to transmit the downlink data of session #1, or It is used for the TD-UPF to send the downlink data of the session #1 to the UPF according to the tunnel endpoint identifier.
  • the UPF can learn that the data carrying the tunnel endpoint identifier belongs to session #1.
  • the tunnel endpoint identifier may be different from the tunnel endpoint identifier used by the UPF to receive data from an intermediate UPF or from the RAN.
  • the downlink data can be understood as a data message sent from the DN to the UE.
  • TD-SMF selects TD-UPF, and assigns a tunnel endpoint identifier of TD-UPF to session #1.
  • the TD-SMF selects the TD-UPF according to the IP address of the UE and/or the routing mask of the IP network segment. It can be understood that TD-SMF selects the same TD-UPF for the UE IP address segment within the routing mask range of the same IP network segment.
  • the TD-SMF sends the IP address of the UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the UPF and the tunnel endpoint identifier of the TD-UPF to the TD-UPF.
  • the TD-UPF receives the above information from the TD-SMF.
  • TD-UPF establishes a tunnel between TD-UPF and UPF according to the tunnel endpoint identifier of UPF.
  • This tunnel can be understood as a downlink tunnel, so that after TD-UPF receives the downlink data of session #1, it can send data to UPF.
  • the tunnel endpoint identifier of TD-UPF can be used to transmit the uplink data of session #1, that is, the UPF sends the uplink data of session #1 to TD-UPF according to the tunnel endpoint identifier.
  • TD-UPF can learn that the data carrying the tunnel endpoint identifier belongs to session #1.
  • the uplink data can be understood as a data packet sent from the UE to the DN.
  • the TD-UPF publishes the UE's IP address and IP network segment routing mask to the network.
  • the downlink data whose IP address is the IP address of the UE can be routed to the TD-UPF. Then the TD-UPF can send data to the UPF according to the tunnel endpoint identifier of the UPF.
  • the UE's IP address and IP network segment routing mask are determined by the above-mentioned SMF or the above-mentioned UPF, and are released to the network by the TD-UPF instead of the above-mentioned UPF.
  • the TD-UPF may also publish the routing mask of the IP network segment to the network without publishing the IP address of the UE, so that the data whose IP address belongs to the routing mask of the IP network segment is routed to the TD-UPF.
  • the TD-SMF sends the TD-UPF tunnel endpoint identifier to the SMF.
  • the SMF receives the tunnel endpoint identifier of the TD-UPF from the TD-SMF.
  • this application does not limit the time sequence relationship between S204 and S205.
  • S205 may be executed at any time after the TD-SMF receives the confirmation message from the TD-UPF.
  • the SMF sends the TD-UPF tunnel endpoint identifier to the UPF.
  • the UPF receives the tunnel endpoint identifier of the TD-UPF from the SMF.
  • the UPF establishes an uplink tunnel between the UPF and the TD-UPF according to the tunnel endpoint identifier of the TD-UPF, so that after the UPF receives the uplink data of session #1, the data can be sent to the TD-UPF through the tunnel.
  • the SMF can confirm whether the TD-SMF and the TD-UPF have successfully established the session #1 by whether the tunnel endpoint identifier of the TD-UPF is acquired.
  • the IP address and IP network segment routing mask of the UE in session #1 are released to the network by TD-UPF, so that TD-UPF can receive the data of session #1 from the network, and pass the communication between TD-UPF and UPF The tunnel forwards this data to UPF.
  • TD-UPF is deployed as a hop in the user plane of the core network, and does not need to be deployed as a part of the data network, so there is no need to re-plan routes when deploying TD-UPF
  • the routing of the data of session #1, that is, no modification of the data network is required.
  • the TD-UPF may assign a TD-UPF tunnel endpoint identifier to session #1.
  • S202 and S203 can be replaced by:
  • TD-SMF selects TD-UPF.
  • the TD-SMF sends the IP address of the UE, the routing mask of the IP network segment, and the tunnel endpoint identifier of the UPF to the TD-UPF.
  • the TD-UPF receives the above information from the TD-SMF.
  • S203b TD-UPF assigns a TD-UPF tunnel endpoint identifier to session #1.
  • S203c The TD-UPF sends the TD-UPF tunnel endpoint identifier to the TD-SMF.
  • the SMF may determine the TD-SMF in the following manner:
  • S201a The TD-SMF registers with the NRF.
  • the TD-SMF can register the online and offline status of the network element and/or select a strategy in the NRF. Therefore, the SMF can select a suitable SMF through the registration information of the TD-SMF on the NRF.
  • S201b The SMF subscribes the information of the TD-SMF to the NRF.
  • the SMF selects an appropriate TD-SMF according to the subscribed TD-SMF information.
  • the SMF determines that a TD-SMF needs to be selected for the session #1, the SMF selects an appropriate TD-SMF according to the subscribed TD-SMF information.
  • the SMF also selects an appropriate TD-SMF according to locally configured information.
  • the TD-SMF sends a subscription request to the SMF.
  • the subscription request is used for subscribing information of sessions that require TDF.
  • the SMF responds to the subscription of the TD-SMF and sends the relevant information of the session #1 to the TD-SMF.
  • the above S201a to S201c can be specifically implemented by the method shown in FIG. 3 .
  • the SMF and the TD-SMF interact through the PCF.
  • this implementation manner may be applicable to a scenario where the SMF and the TD-SMF cannot communicate directly.
  • S201 may be replaced by: the SMF sends to the PCF the IP address of the UE corresponding to session #1, the IP network segment routing mask corresponding to the IP address of the UE, and the UPF tunnel endpoint identifier allocated for session #1.
  • the PCF receives the above information from the SMF and sends it to the TD-SMF.
  • the process of determining the SMF by the PCF may refer to the process of determining the TD-SMF by the SMF in S201a to S201c, and replace the actions performed by the SMF in S201a to S201c with those performed by the PCF.
  • the SMF and the TD-SMF can be deployed together, or the SMF has the function of the TD-SMF.
  • the interaction between the SMF and the TD-SMF can be omitted, and the actions performed by the TD-SMF can be performed by the SMF.
  • the SMF selects the TD-UPF, for details, reference may be made to the process of the TD-SMF selecting the TD-UPF in S202.
  • FIG. 3 is a schematic flow chart of an SMF acquiring TD-SMF information. As shown in Figure 3, the process specifically includes:
  • the TD-SMF registers the TD-SMF's logout status and selection strategy through the service interface Nnrf_NFManagement_NFRegister service operation of the NRF.
  • the Names of supported NF services (if applicable) parameter can include the TDF function, so that other NFs can perceive the role of this SMF as TD-SMF when subscribing. It can be understood that the TD-SMF may indicate that the SMF is a TD-SMF in other ways, such as adding indication information in the registration input parameters, which is not limited in this application.
  • S302 The SMF subscribes to the information of the TD-SMF through the service interface Nnrf_NFManagement_NFStatusSubscribe service operation of the NRF.
  • the NRF sends the TD-SMF online and offline status and selection policy to the SMF through the NRF service interface Nnrf_NFManagement_NFStatusNotify service operation.
  • SMF can confirm the role of TD-SMF through the Names of supported NF services (if applicable) parameter.
  • the selection policy may include the service area of the TD-SMF, and the SMF selects a suitable TD-SMF according to the address of the UE.
  • FIG. 4 is a schematic flowchart of a TD-SMF acquiring TD-UPF information. As shown in Figure 4, the process specifically includes:
  • the TD-UPF registers the TD-UPF's logout status and selection strategy through the service interface Nnrf_NFManagement_NFRegister service operation of the NRF.
  • the Names of supported NF services (if applicable) parameter can include the TDF function, so that other NFs can perceive the role of the UPF as TD-UPF when subscribing. It can be understood that the TD-UPF may indicate that the UPF is a TD-UPF in other ways, such as adding indication information in the registration input parameters, which is not limited in this application.
  • the TD-SMF subscribes to the information of the TD-UPF through the service interface Nnrf_NFManagement_NFStatusSubscribe service operation of the NRF.
  • the NRF sends the TD-UPF online and offline status and selection policy to the TD-SMF through the service interface Nnrf_NFManagement_NFStatusNotify service operation of the NRF.
  • TD-SMF can confirm the role of TD-UPF through the Names of supported NF services (if applicable) parameter.
  • the SMF when the SMF is co-located with the TD-SMF, or the SMF has the function of the TD-SMF, the SMF can obtain the information of the TD-UPF in a manner similar to that shown in FIG. 4 to select the TD-UPF. That is, the TD-SMF in Figure 4 can be replaced by SMF.
  • FIG. 5 is a schematic flowchart of a method for establishing a connection, which can be used to implement the method shown in FIG. 2A or FIG. 2B . As shown in Figure 5, the process includes:
  • the SMF receives a session establishment request from a UE.
  • the SMF receives the session establishment request from the UE through the access network node and the AMF.
  • the session establishment request includes the identifier of the session #1, which will be referred to as the session identifier #1 hereinafter.
  • the session establishment request is used to request establishment of session #1.
  • the session establishment request also includes information such as the identifier of the UE, the name of the data network DNN, and the address of the UE.
  • S502 The SMF selects the TD-SMF.
  • the SMF may select the TD-SMF according to the selection policy obtained in S303 above
  • Selecting a TD-SMF may be selecting a TD-SMF from multiple TD-SMFs; it may also be determining whether to select a unique TD-SMF.
  • S503 The SMF selects a UPF, and sends an N4 session establishment request to the UPF to request establishment of session #1.
  • the present application does not limit the execution order of the above S502 and S503.
  • S504 The UPF sends an N4 session establishment response to the SMF.
  • the N4 session establishment response includes the IP address of the UE allocated for the session #1, the routing mask of the IP network segment corresponding to the IP address of the UE, and the UPF tunnel endpoint identifier allocated for the session #1.
  • the tunnel endpoint identifier is used to establish a tunnel with TD-UPF.
  • the tunnel endpoint identifier can be understood as the tunnel endpoint identifier of the downlink tunnel with the TD-UPF.
  • the N4 session establishment response also includes an uplink tunnel endpoint identifier of the UPF allocated for the session #1, and the uplink tunnel endpoint identifier is used to establish an uplink tunnel between the RAN and the UPF.
  • the RAN sends the uplink data of the session #1 to the UPF according to the uplink tunnel endpoint identifier.
  • the UPF can be understood as the anchor UPF, or can be understood as the last UPF in the uplink user plane path of the session #1, or can be understood as the UPF that allocates the IP address of the UE.
  • the above-mentioned uplink tunnel endpoint identifier is used to establish an uplink tunnel between the intermediate UPF and the anchor UPF.
  • the intermediate UPF sends the uplink data of the session #1 to the UPF according to the uplink tunnel endpoint identifier.
  • the IP address of the above-mentioned UE, the corresponding IP network segment routing mask, or the tunnel endpoint identifier of the above-mentioned UPF, or the uplink tunnel endpoint identifier can be determined or generated by the SMF, and at this time, the SMF sends it to the UPF (for example, it can carry In the session establishment request sent by SMF to UPF), it is not required for SMF to obtain from UPF.
  • the SMF sends the IP address of the above UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the above UPF to the TD-SMF through the Nsmf_PDUSession_Create service operation interface.
  • the above information can be carried in the Nsmf_PDUSession_TDFCreate service operation in the above interface.
  • the SMF also sends the session establishment information of session #1 to the TD-SMF through this interface
  • the session establishment information may include UE's terminal device identifier, APN, data network name (data network name, DNN), single network slice Select one or more of the support information (single network slice selection assistance information, S-NSSAI).
  • the SMF may send the above information to the TD-SMF through the PCF. That is, S505 can be replaced by:
  • S505a The SMF sends the IP address of the UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the UPF to the PCF.
  • the PCF sends the IP address of the above UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the above UPF to the TD-SMF through the Nsmf_PDUSession_Create service operation interface.
  • the above information can be carried in the Nsmf_PDUSession_TDFCreate service operation in the above interface.
  • the TD-SMF selects the TD-UPF.
  • the TD-SMF selects the TD-UPF according to the IP address of the UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the UPF.
  • the TD-SMF may acquire the TDF-related policies and rules of the session #1 from the PCF.
  • the TD-SMF sends an N4 session establishment request to the TD-UPF.
  • the N4 session establishment request includes the IP address of the UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the UPF.
  • S505-S507 may be replaced by: the SMF sends the N4 session establishment request to the TD-UPF.
  • the session establishment request includes the IP address of the UE, the routing mask of the IP network segment corresponding to the IP address of the UE, and the tunnel endpoint identifier of the UPF.
  • the TD-UPF can be selected by the SMF.
  • the SMF may select the TD-UPF based on the manner shown in FIG. 4 .
  • S508 The TD-UPF sends an N4 session establishment response to the TD-SMF.
  • the N4 session establishment response includes the TD-UPF tunnel endpoint identifier.
  • the TD-UPF tunnel endpoint identifier can also be generated by the TD-SMF.
  • the N4 session establishment request in S507 also includes the tunnel endpoint identifier of the TD-UPF, and it is not necessary for the TD-UPF to send the TD-UPF tunnel endpoint identifier to the SMF in S508.
  • S508 may be replaced by: the TD-UPF sends an N4 session establishment response to the SMF. And there is no need to execute S510.
  • TD-UPF publishes the IP address and routing mask of the IP network segment of the UE.
  • this application does not limit the time sequence relationship between S508 and S509.
  • the TD-SMF sends the TD-UPF tunnel endpoint identifier to the SMF through the Nsmf_PDUSession_Create Response interface.
  • S511 The SMF sends an N4 session modification request to the UPF.
  • the N4 session modification request includes the TD-UPF tunnel endpoint identifier.
  • the SMF sends a session establishment response to the RAN.
  • the session response includes the UPF uplink tunnel endpoint identifier.
  • the SMF can confirm whether the TD-SMF and the TD-UPF have successfully established the session #1 by whether the tunnel endpoint identifier of the TD-UPF is acquired.
  • the IP address and IP network segment routing mask of the UE in session #1 are released to the network by TD-UPF, so that TD-UPF can receive the data of session #1 from the network, and pass the communication between TD-UPF and UPF The tunnel forwards this data to UPF.
  • TD-UPF is deployed as a hop in the user plane of the core network, and does not need to be deployed as a part of the data network, so there is no need to re-plan the route when deploying TD-UPF to achieve TD-UPF routes the data of session #1, that is, there is no need to modify the data network.
  • the communication device can be used to implement, for example, SMF in Figures 2A to 5, UPF in Figures 2A, 2B, and 5, TD-UPF in Figures 2A, 2B, and 5, UDM in Figures 3 and 4, or Figure 2A To the function of TD-SMF in Figure 5.
  • the embodiment of the present application may divide the functional units of the communication device according to the above method embodiments, for example, each functional unit may be divided corresponding to each function, or two or more units may be integrated into one processing module.
  • FIG. 6 For a structural diagram of the communication device, reference may be made to FIG. 6 .
  • FIG. 6 is a schematic structural diagram of a communication device 600 provided in this application.
  • the communication device 600 includes one or more processors 601, a communication line 602, and at least one communication interface (in FIG.
  • the memory 604 may also be included.
  • the processor 601 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more for controlling the execution of the application program program integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • Communication lines 602 are used to connect the various components.
  • the communication interface 603 may be a transceiver module for communicating with other devices or communication devices or communication networks, such as Ethernet, RAN, wireless local area networks (wireless local area networks, WLAN) and the like.
  • the transceiver module may be a device such as a transceiver, a transceiver, or a network card or an optical fiber switching device.
  • the communication interface 603 may also be a transceiver circuit located in the processor 601 to realize signal input and signal output of the processor.
  • the memory 604 may be a device having a storage function.
  • it can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other types of memory that can store information and instructions
  • a dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to it.
  • the memory may exist independently and be connected to the processor through the communication line 1002 . Memory can also be integrated with the processor.
  • the memory is used to store computer-executed instructions for implementing the solutions of the present application, and the execution is controlled by the processor.
  • the processor is used to execute the computer-executed instructions stored in the memory, thereby realizing the SMF in Fig. 2A to Fig. 5 of this application, the UPF in Fig. 2A, Fig. 2B and Fig. 5, the TD-UPF in Fig. 2A, Fig. 2B and Fig. 5, Fig. 3 , the UDM in Figure 4, or the functions of the TD-SMF in Figure 2A to Figure 5 .
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, or computer program instructions, or program instructions, which are not specifically limited in the embodiments of the present application.
  • the processor 601 may include one or more CPUs, for example, CPU0 and CPU1 in FIG. 6 .
  • the communications apparatus 600 may include multiple processors, for example, the processor 601 and the processor 605 in FIG. 6 .
  • Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).
  • the aforementioned communication device 600 may be a general-purpose device or a dedicated device.
  • the communication device 600 may be a network server, an embedded device, a desktop computer, a portable computer, a mobile phone, a tablet computer, a wireless terminal device or a device having a structure similar to that shown in FIG. 6 .
  • the embodiment of the present application does not limit the type of the communication device 600 .
  • the communication device 700 includes a processing unit 711 and a transceiver unit 112 .
  • the communication device can be used to realize the functions of the SMF in FIG. 2A to FIG. 5 .
  • the transceiving unit 712 executes the receiving and sending operations performed by the SMF in the methods in FIGS. 2A to 5
  • the processing unit 711 executes operations other than the receiving and sending operations.
  • the communication device can be used to implement the functions of the UPF in FIG. 2A , FIG. 2B , and FIG. 5 .
  • the transceiver unit 712 performs the receiving and sending operations performed by the UPF in FIG. 2A , FIG. 2B , and FIG. 5
  • the processing unit 711 performs operations other than the receiving and sending operations.
  • the communication device can be used to implement the functions of the TD-UPF in FIG. 2A , FIG. 2B , and FIG. 5 .
  • the transceiver unit 712 executes the receiving and sending operations performed by the TD-UPF in FIG. 2A , FIG. 2B , and FIG. 5
  • the processing unit 711 executes operations other than the receiving and sending operations.
  • the communication device can be used to realize the functions of the UDM in Fig. 3 and Fig. 4 .
  • the transceiver unit 712 performs the receiving and sending operations performed by the UDM in FIG. 3 and FIG. 4
  • the processing unit 711 performs operations other than the receiving and sending operations.
  • the communication device can be used to implement the functions of the TD-SMF in FIG. 2A to FIG. 5 .
  • the transceiver unit 712 performs the receiving and sending operations performed by the TD-SMF in FIGS. 2A to 5 , and the processing unit 711 performs operations other than the receiving and sending operations.
  • the embodiment of the present application may divide the communication device into functional units according to the above method embodiments.
  • each functional unit may be divided corresponding to each function, or two or more units may be integrated into one processing module.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.
  • the functions/implementation process of the processing unit 711 and the transceiver unit 712 in FIG. 7 can be realized by calling the computer-executed instructions stored in the memory by the processor in the communication device shown in FIG. 6 .
  • the function/implementation process of the processing unit 711 in FIG. 7 can be implemented by calling the computer execution instructions stored in the memory by the processor in the communication device shown in FIG. 6, and the function/implementation process of the transceiver unit 712 in FIG. 7 can be It is realized through the communication interface in the communication device shown in FIG. 6 .
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may be a data storage device including one or more servers, data centers, etc. that can be integrated with the medium.
  • the available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.
  • the computer may include the aforementioned apparatus.

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Abstract

La présente demande divulgue un procédé, un appareil et un système permettant d'établir une connexion. Selon la solution fournie par des modes de réalisation de la présente demande, une fonction SMF envoie des informations de session à une fonction TD-SMF, les informations de session comprenant un premier identifiant de point d'extrémité de tunnel d'une fonction PSA-UPF, une adresse IP d'un terminal et un masque de routage de segment de réseau IP correspondant à l'adresse IP ; la fonction TD-SMF envoie ces informations de session à une fonction TD-UPF de telle sorte que la fonction TD-UPF publie l'adresse IP et le masque de routage de segment de réseau IP du terminal vers un réseau et établisse un tunnel de liaison descendante avec la fonction PSA-UPF et, ainsi, la fonction TD-UPF peut recevoir les données du terminal en provenance du réseau et les envoyer à la fonction PSA-UPF ; et, ensuite, la fonction TD-SMF envoie un second identifiant de point d'extrémité de tunnel de la fonction TD-UPF à la fonction SMF et la fonction SMF envoie le second identifiant de point d'extrémité de tunnel à la fonction PSA-UPF de telle sorte que la fonction PSA-UPF puisse établir un tunnel de liaison montante avec la fonction TD-UPF.
PCT/CN2022/095084 2021-05-27 2022-05-25 Procédé, appareil et système permettant d'établir une connexion WO2022247875A1 (fr)

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WO2020150333A1 (fr) * 2019-01-15 2020-07-23 Talebi Fard Peyman Configuration basée sur un plan de commande pour mise en réseau sensible au temps
CN112105091A (zh) * 2019-06-17 2020-12-18 中国移动通信有限公司研究院 会话管理方法、会话管理功能smf实体、终端及网络侧实体
WO2021023191A1 (fr) * 2019-08-05 2021-02-11 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de gestion de session

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