WO2023065990A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2023065990A1
WO2023065990A1 PCT/CN2022/121710 CN2022121710W WO2023065990A1 WO 2023065990 A1 WO2023065990 A1 WO 2023065990A1 CN 2022121710 W CN2022121710 W CN 2022121710W WO 2023065990 A1 WO2023065990 A1 WO 2023065990A1
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Prior art keywords
terminal device
network element
subscription data
data
data management
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PCT/CN2022/121710
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English (en)
French (fr)
Inventor
于游洋
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华为技术有限公司
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Publication of WO2023065990A1 publication Critical patent/WO2023065990A1/zh

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    • 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
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data

Definitions

  • the present application relates to the technical field of communication, and in particular to a communication method and device.
  • the 5G network architecture defined in the 3rd Generation Partnership Project (3GPP) not only supports wireless technologies defined by the 3GPP standard group for terminal devices, such as long term evolution (LTE), 5G radio access network ( radio access network, RAN) and other access to 5G core network (5G core network, 5GC), and supports the use of Non-3GPP access technology through Non-3GPP interworking function (non-3GPP interworking function, N3IWF) or next-generation access gateway (next generation paeket data gateway, ngPDG) connected to 5GC.
  • LTE long term evolution
  • 5G radio access network radio access network
  • 5G core network 5G core network
  • N3IWF Non-3GPP interworking function
  • next-generation access gateway next-generation paeket data gateway
  • non-5GC terminal devices that neither support non-access stratum (non-access stratum, NAS) functions, nor support subscriber identity module (SIM) cards, and are not 5GC subscribers, currently no Support its access to 5GC.
  • NAS non-access stratum
  • SIM subscriber identity module
  • This application proposes a communication method and device, which can solve the problem that terminal devices that do not support SIM cards, do not support NAS functions, and are not 5GC subscribers cannot access 5GC.
  • the present application proposes a communication method, in which a terminal device accesses a first network through a second network.
  • the method includes:
  • the first data management network element in the first network obtains the identification information of the terminal device connected to the access gateway in the second network.
  • the first network may be 5GC or a future mobile communication system, such as 6G.
  • the second network may be a campus network, a private network, or a local network, which is not limited in this application.
  • the first data management network element acquires the access parameters of the terminal device from the second data management network element corresponding to the terminal device in the second network according to the identification information.
  • the foregoing access parameters include service type information, such as at least one of IP service, Ethernet service, or unstructured service, service bandwidth requirements and/or authentication parameters.
  • the first data management network element acquires the subscription data of the terminal device according to the access parameters.
  • the above subscription data includes: a permanent identifier of the terminal device and at least one of a PDU session type, a slice type, a quality of service (quality of service, QoS) parameter and/or a data network name (data network name, DNN).
  • a permanent identifier of the terminal device and at least one of a PDU session type, a slice type, a quality of service (quality of service, QoS) parameter and/or a data network name (data network name, DNN).
  • the first data management network element sends the subscription data of the terminal device to the access gateway.
  • the method also includes:
  • the first data management network element acquires first indication information, where the first indication information is used to indicate that the terminal device is accessing the first network for the first time.
  • the first indication information may be a first access indication and/or a subscription data request indication.
  • the first access indication is used to indicate that the terminal device establishes a connection with the first network for the first time, and needs to request the subscription data of the terminal device, or indicates that the access gateway does not have the subscription data of the terminal device, for example, it may be lost due to recovery of the access gateway failure If the original subscription data is lost, it is necessary to request the subscription data of the terminal device.
  • the subscription data request indication is used to indicate that the access gateway does not have the subscription data of the terminal device and needs to request the subscription data of the terminal device.
  • the method also includes:
  • the first data management network element acquires second indication information, where the second indication information is used to indicate to skip performing authentication on the terminal device.
  • the second indication information may specifically be an indication of omitting authentication.
  • the first data management network element sends the second indication information to an authentication server function (authentication server funetion, AUSF) network element.
  • the AUSF network element skips performing authentication on the terminal device according to the second indication information.
  • the method also includes:
  • the first data management network element acquires the permanent identifier of the terminal device according to the access parameter and/or the identifier information of the terminal device.
  • the terminal device does not support a SIM card, does not support a NAS function, and is not a 5GC subscriber.
  • the method also includes:
  • the first data management network element acquires the location information of the terminal device
  • the first data management network element determines the second data management network element according to the location information.
  • the above-mentioned first data management network element obtains the subscription data of the terminal device according to the access parameters, including:
  • the first data management network element In the registration process, the first data management network element generates the subscription data of the terminal device according to the access parameters.
  • the above-mentioned first data management network element sends the subscription data of the terminal device to the access gateway, including:
  • the first data management network element sends the subscription data of the terminal device to the access gateway, and the above PDU session is used to transmit the subscription data, realizing the transmission of the subscription data through the user plane
  • the access gateway it is applicable to the situation that the subscription data contains many parameters, and it is not convenient to transmit the subscription data to the access gateway through the control plane; or
  • the first data management network element sends the subscription data of the terminal device to the access gateway, realizing the transfer of the subscription data to the access gateway through the control plane.
  • the first data management network element sends the subscription data of the terminal device to the access gateway through the user plane of the protocol data unit PDU session, including:
  • the first data management network element sends the subscription data to the (session management funetion, SMF) network element, so that the SMF network element transmits the subscription to the access gateway through the PDU session corresponding to the first DNN
  • SMF session management funetion
  • the above-mentioned first DNN is used to indicate that the PDU session is used to transmit subscription data
  • the first DNN is a pre-configured DNN.
  • the first data management network element in the first network obtains the terminal according to the obtained identification information of the terminal device (that is, the terminal device that does not support the SIM card, does not support the NAS function, and is not a 5GC subscriber) Access parameters of the device. Then acquire the subscription data of the terminal device according to the access parameter. Then send the subscription data to the access gateway in the second network.
  • the terminal device that does not support the SIM card, does not support the NAS function, and is not a 5GC subscriber accesses the first network through the second network.
  • the present application also proposes a communication method, which includes:
  • the access gateway in the second network establishes a connection with the terminal device in the second network, and this application does not limit the way of establishing the connection.
  • the access gateway obtains the subscription data of the terminal device from the first network.
  • the above-mentioned subscription data includes: a permanent identifier of the terminal device and at least one of PDU session type, slice type, QoS parameter and/or DNN.
  • the access gateway accesses the first network according to the subscription data.
  • the method also includes:
  • the access gateway determines that there is no subscription data of the terminal device locally, and therefore needs to request the subscription data of the terminal device from the first network.
  • the method also includes:
  • the access gateway determines, according to the identification information of the terminal device, that the terminal device accesses the first network for the first time.
  • the method also includes:
  • the access gateway sends a registration request message to the first network, where the registration request message includes first indication information and/or second indication information, where the first indication information is used to instruct the terminal device to access the first network for the first time, and the above first indication information
  • the second indication information is used to indicate to skip the authentication of the terminal device.
  • the access gateway obtains the subscription data of the terminal device from the first network, including:
  • the access gateway obtains the subscription data of the terminal device from the first network.
  • the method also includes:
  • the access gateway establishes a protocol data unit PDU session for transmitting subscription data
  • the above-mentioned access gateway obtains the subscription data of the terminal device from the first network, including:
  • the access gateway obtains the subscription data of the terminal device from the first network, and realizes the transmission of the subscription data to the access gateway through the user plane. It is suitable for the subscription data containing many parameters, which is not convenient for transmission through the control plane. The case of signing data to the access gateway.
  • the access gateway obtains the subscription data of the terminal device from the first network, including:
  • the access gateway acquires the permanent identifier of the terminal device from the first network
  • the method also includes:
  • the access gateway determines the terminal device according to the permanent identifier.
  • the access gateway in the second network accesses the terminal device according to the subscription data obtained from the first network (that is, the terminal device that does not support the SIM card, does not support the NAS function, and is not a 5GC subscriber). into the first network.
  • the terminal device that does not support the SIM card, does not support the NAS function, and is not a 5GC subscriber accesses the first network through the second network.
  • the present application proposes a communication device, including at least one processor, the processor is configured to execute a program stored in a memory, and when the program is executed, the communication device executes:
  • the communication device further includes the foregoing memory.
  • the processor and memory can be integrated.
  • the above-mentioned memory is set outside the device.
  • the present application proposes a computer program product containing instructions.
  • the method as in the first aspect and its various possible implementations is executed by the computer; or as in the first aspect
  • the methods of the two aspects and various possible implementations thereof are executed by the computer.
  • the present application proposes a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method in the first aspect and its various possible implementations be executed; or be executed as in the method in the second aspect and various possible implementations thereof.
  • the present application provides a communication system, which includes:
  • the first data management network element is configured to execute the method in the first aspect and various possible implementations thereof;
  • AUSF network element configured to communicate with the first data management network element
  • the SMF network element is configured to communicate with the first data management network element.
  • FIG. 1 is a schematic diagram of a 5G service-based network architecture in a possible implementation
  • FIG. 2 is a schematic diagram of a network architecture in which 3GPP accesses 5GC in a possible implementation manner
  • Fig. 3 is a schematic diagram of a network architecture of non-trusted Non-3GPP (Untrusted Non-3GPP Access) accessing 5GC in a possible implementation mode;
  • Non-3GPP Untrusted Non-3GPP Access
  • FIG. 4 is a schematic diagram of a network architecture in which trusted WLAN (Trusted WLAN Access Point, TWAP) accesses 5GC in a possible implementation mode;
  • trusted WLAN Trusted WLAN Access Point, TWAP
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flow diagram of the first data management network element obtaining the identification information of the second terminal device connected to the access gateway through the control plane provided by the embodiment of the present application;
  • FIG. 7 is a schematic flow diagram of the first data management network element obtaining the identification information of the second terminal device connected to the access gateway through the user plane provided by the embodiment of the present application;
  • FIG. 8 is a schematic flow diagram of the first data management network element determining the second data management network element corresponding to the second terminal device in the second network provided by the embodiment of the present application;
  • FIG. 9 is another schematic flowchart of the first data management network element determining the second data management network element corresponding to the second terminal device in the second network provided by the embodiment of the present application;
  • FIG. 10 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 11 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 12 is another schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 14 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 15 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1 shows a schematic diagram of a 5G service-based network architecture.
  • the network structure adopts a service interface, which may include user equipment (user equipment, UE), 5GC, and radio access network (radio access network, RAN), that is, 5G access network, etc.
  • the UE can access the 5GC through the N1 interface, or it can first access the RAN, and then the RAN can access the 5GC through the N2 or N3 interface.
  • 5GC includes control plane function (control plane function, CPF), user plane function (user plane function, UPF), application function (application function, AF) network elements and data network (data network, DN) network elements, etc.
  • CPF is mainly responsible for user registration and authentication, mobility management, and sending data packet forwarding policies and QoS control policies to UPF. It can be further subdivided into Network Slice Selection Function (NSSF) network elements and network Open function (Network Exposure Function, NEE) network element, network storage function (NF Repository Function, NRF) network element, policy control function (policy control function, PCF) network element, unified data management (unified data manager, UDM) network element , AUSF network element, access and mobility management function (access and mobility management function, AMF) network element and SMF network element, etc.
  • NSSF Network Slice Selection Function
  • NEE Network Exposure Function
  • NRF Network Repository Function
  • policy control function policy control function
  • PCF policy control function
  • UDM unified data management
  • AUSF access and mobility management function
  • AMF access and mobility management function
  • SMF SMF
  • the NSSF network element is responsible for selecting the network slice instance set serving the UE.
  • NEE network elements are responsible for the collection, analysis and reorganization of network capabilities and the opening of network capabilities; NRF network elements are used for network function (network function, NF) registration, management, status monitoring, and automatic management of all NFs.
  • the PCF network element is mainly used to deliver service-related policies to the AMF network element or SMF network element. For example, the PCF network element obtains the user subscription policy from the UDM network element and sends it to the AMF network element or the SMF network element.
  • the UDM network element is mainly used to store subscription data of the UE.
  • the AUSF network element is mainly responsible for authenticating the UE and determining the legitimacy of the UE.
  • the AMF network element is responsible for the registration process during user access and location management during user movement.
  • the SMF network element is responsible for establishing a corresponding session connection on the network side when the user initiates a service, and provides specific services for the user. For example, based on the N4 interface between the SMF network element and the UPF network element, the data packet forwarding policy and QoS policy are issued to the UPF network element. wait.
  • UPF is mainly responsible for the routing and forwarding of packet data packets, QoS control and accounting information statistics.
  • a UPF may support an uplink classifier to route packets to instances of a DN, etc.
  • the AF network element is mainly used to send application-related requirements to the PCF network element, so that the PCF network element generates a corresponding policy.
  • the application can be an application within the operator, such as Volte AF. If the AF network element and other NFs, such as PCF network elements, are in a trusted domain, application-related requirements can be directly sent to other NFs, such as PCF network elements.
  • the DN network element provides services for the UE, such as providing mobile operator services, Internet services, or third-party services.
  • the 5G network architecture shown in Figure 1 not only supports wireless technologies defined by the 3GPP standard group, such as LTE, 5G RAN, etc. to access 5GC, but also supports non-3GPP access technologies to access 5GC through N3IWF or ngPDG.
  • FIG. 2 shows a schematic diagram of a network architecture in which 3GPP accesses 5GC.
  • the network architecture includes: AMF network element, SMF network element, UPF network element, DN network element, 3GPP access point (access point, AP) and UE.
  • AMF network element the functions of the AMF network element, the SMF network element, the UPF network element and the DN network element are the same as those described above for each network element in FIG. 1 , and will not be repeated here.
  • a UE in a local public land mobile network may first establish a connection with a 3GPP AP through a wireless network, such as Bluetooth. Then, the 3GPP AP accesses the 5GC through the N2 interface.
  • a wireless network such as Bluetooth
  • FIG. 3 shows a schematic diagram of a network architecture where an untrusted Non-3GPP accesses a 5GC.
  • the network architecture adopts point-to-point interface protocol, which can include: AMF network element, SMF network element, UPF network element, DN network element, N3IWF, non-trusted Non-3GPP AP and UE, etc.
  • AMF network element can include: AMF network element, SMF network element, UPF network element, DN network element, N3IWF, non-trusted Non-3GPP AP and UE, etc.
  • the functions of the AMF network element, the SMF network element, the UPF network element and the DN network element are the same as those described above for each network element in FIG. 1 , and will not be repeated here.
  • the UE when the non-trusted Non-3GPP accesses the 5GC, the UE can establish a connection with the non-trusted Non-3GPP AP through the Y1 interface. Then, the non-trusted Non-3GPP AP establishes a connection with the N3IWF through the Y2 interface.
  • N3IWF is an untrusted Non-3GPP access gateway. Afterwards, the N3IWF generates a registration request message on behalf of the UE, and sends the registration request message to the AMF network element through the N2 interface.
  • the 5GC mentioned in the embodiment of the present application may also support trusted Non-3GPP access and/or fixed network access.
  • the trusted Non-3GPP network includes a trusted WALN network
  • the fixed network includes fixed home network access and the like.
  • FIG. 4 shows a schematic diagram of a network architecture in which a trusted WLAN accesses a 5GC.
  • the network architecture adopts a point-to-point interface protocol, which can include: AMF network element, SMF network element, UPF network element, DN network element, trusted WLAN interworking function (trusted WLAN interworking function, TWIF), trusted WLAN AP and does not support 5G WLAN (Non 5C WLAN, N5CW) terminal equipment.
  • N5CW terminal device is referred to as the first terminal device hereinafter.
  • the functions of the AMF network element, the SMF network element, the UPF network element and the DN network element are the same as those described above for each network element in FIG. 1 , and will not be repeated here.
  • the access network equipment between the UE and the aforementioned access gateway includes WLAN AP, fixed access network equipment (fixed access network, FAN), switch, router and so on.
  • TWIF may generate a NAS message, such as a registration request message, on behalf of the first terminal device, and send it to the AMF network element.
  • the first terminal device described above in FIG. 4 does not support the NAS function, it supports the SIM card and is a 5GC subscriber. Therefore, there is subscription data related to the first terminal device in the UDM.
  • the first terminal device described in Figure 4 its terminal type is basically a mobile phone or a smart terminal, so TWIF does not need to configure terminal granular context information, that is, TWIF uses the default subscription data to provide
  • the N5CW terminal acts as an agent to access the 5GC.
  • non-5GC terminal equipment that neither supports NAS function nor SIM card, and is not a 5GC subscriber, due to its wide range of terminal types, such as sensor equipment, industrial terminals, electronic tags (radio frequency identification, RFID) equipment, Camera, Laptop or iPad etc.
  • RFID radio frequency identification
  • TWIF time division multiple access
  • an embodiment of the present application proposes a communication method.
  • the access gateway can access the 5GC on behalf of the second terminal device, and obtain the subscription data of the second terminal device through the control plane or the user plane.
  • the access gateway can also independently access the 5GC as a terminal device, and obtain the subscription data of the second terminal device through the user plane.
  • the second terminal device accesses 5GC or future mobile communication systems, such as 6G, through the network where the second terminal device and the access gateway are located, that is, the second terminal device registers with the 5GC through the network where the second terminal device and the access gateway are located. and future mobile communication systems.
  • the first network 5GC or the future mobile communication system
  • the second network can be a campus network, a private network or The local network, etc., are not limited in this application.
  • FIG. 5 shows a schematic flowchart of a communication method proposed in the embodiment of the present application.
  • the flowchart mainly involves the interaction between the first data management network element, the access gateway, the second terminal device, and the second data management network element corresponding to the second terminal device.
  • a connection may be established between the first data management network element and the access gateway through a wired network for data exchange.
  • a connection may be established between the first data management network element and the second data management network element corresponding to the second terminal device through a wired network for data exchange.
  • a connection may be established between the access gateway and the second terminal device through a network such as a wired network or a wireless network for data exchange.
  • a connection may be established between the access gateway and the second terminal device through a short-distance wireless communication technology, such as establishing a connection through Bluetooth.
  • the communication method may include the following steps:
  • the access gateway in the second network establishes a connection with the second terminal device in the second network.
  • the access gateway in the second network directly establishes a connection with the second terminal device in the second network.
  • This application does not limit the connection establishment scheme.
  • the access gateway before the access gateway establishes a connection with the second terminal device, the access gateway first accesses the first network as a terminal device, that is, the access gateway initiates a registration process of the first network as a terminal device. Then, the access gateway establishes a PDU session as the terminal device, and the PDU session is used to transmit the subscription data of the second terminal device.
  • the subscription data includes: a permanent identifier of the terminal device and at least one of PDU session type, slice type, QoS parameter and/or DNN.
  • the access gateway in the second network establishes a connection with the second terminal device in the second network.
  • the first data management network element in the first network acquires identification information of a second terminal device connected to the access gateway.
  • the first data management network element in the first network can obtain the information of the second terminal device connected to the access gateway. Identification information.
  • the access gateway may determine whether the second terminal device accesses the first network for the first time. For example, after the access gateway in the second network establishes a connection with the second terminal device in the second network in S501, the access gateway acquires the identification information of the second terminal device.
  • the identification information may specifically be a media access control (media access control, MAC) address and/or device identification, etc., which are not limited in this application.
  • the identification information of the second terminal device includes service provider information of the second terminal device.
  • the access gateway searches for the subscription data of the second terminal device based on the identification information of the second terminal device.
  • the access gateway determines the second The terminal device accesses the first network for the first time. In another example, the access gateway does not judge whether the second terminal device is accessing the first network for the first time, but directly defaults to accessing the first network for the first time.
  • the first data management network element may acquire identification information in the following two ways.
  • the first way is: the first data management network element can obtain the identification information of the second terminal device connected to the access gateway through the control plane.
  • the control plane For the specific process, refer to the detailed description of the flowchart shown in FIG. 6 below.
  • the second way is: the first data management network element acquires the identification information of the second terminal device connected to the access gateway through the user plane.
  • the first data management network element acquires the identification information of the second terminal device connected to the access gateway through the user plane.
  • the first data management network element acquires the access parameters of the second terminal device from the second data management network element corresponding to the second terminal device in the second network according to the identification information.
  • the first data management network element in the first network can obtain the identification information from the second terminal device according to the identification information.
  • the data management network element acquires the access parameters of the second terminal device.
  • the first data management network element before the first data management network element obtains the access parameters of the second terminal device from the second data management network element according to the identification information, the first data management network element needs to determine the corresponding For the specific process of the second data management network element, refer to the detailed description of the flowchart shown in FIG. 8 below.
  • the first data management network element obtains the access parameters of the second terminal device from the second data management network element corresponding to the second terminal device in the second network according to the identification information of the second terminal device will be described in detail.
  • the first data management network element sends an access parameter request message to the second data management network element.
  • the access parameter request message includes at least identification information of the second terminal device, which may be locally configured by the second data management network element.
  • the second data management network element searches for the device information of the second terminal device according to the identification information of the second terminal device.
  • the device information may be service type information supported by the device, such as at least one of IP service, Ethernet service, or unstructured service, service bandwidth requirements and/or authentication parameters.
  • the second data management network element sends an access parameter response message to the first data management network element.
  • the access parameter response message includes identification information and access parameters of the second terminal device, where the access parameters include device information. So far, the first data management network element has obtained the access parameters of the second terminal device.
  • the second data management network element also stores the permanent identifier of the second terminal device. Therefore, for the second terminal device not accessing the first network for the first time, the device information of the second terminal device found by the second data management network element according to the identification information also includes the permanent identification of the second terminal device.
  • the first data management network element acquires the subscription data of the second terminal device according to the access parameter.
  • the first data management network element since the second terminal device is accessing the first network for the first time, the first data management network element responds to the identification information and/or the access information of the second terminal device in the message according to the obtained access parameters. Enter parameters to assign a permanent identifier to the second terminal device. And in the registration process, the first data management network element generates the subscription data of the second terminal device according to the access parameters obtained in S503.
  • the subscription data of the second terminal device not accessing the first network for the first time is stored in the first data management network element. Therefore, the first data management network element searches for the subscription data of the second terminal device that is not accessing the first network for the first time according to the permanent identifier of the second terminal device sent by the second data management network element.
  • the first data management network element sends the subscription data of the second terminal device to the access gateway.
  • the first data management network element may send the subscription data of the second terminal device to the access gateway.
  • the above-mentioned subscription data includes: a permanent identifier of the terminal device and at least one of PDU session type, slice type, QoS parameter and/or DNN.
  • the subscription data may be sent to the second terminal device by the first data management network element when the access gateway registers with the first network.
  • the first data management network element sends the subscription data of the second terminal device to the AMF network element.
  • the AMF network element forwards the subscription data of the second terminal device to the access gateway. So far, the access gateway has obtained the subscription data of the second terminal device, and the registration process of the access gateway to the first network is completed. It is realized that the first data management network element sends the subscription data of the second terminal device to the access gateway through the control plane of the first network.
  • the first data management network element can send the subscription data of the second terminal device to the access gateway through the user of the first PDU session, such as the PDU session type, slice type, and QoS in the subscription data. at least one of parameters and/or DNN.
  • the first data management network element after the first data management network element obtains the subscription data of the second terminal device, it only sends the permanent identifier of the second terminal device in the subscription data to the AMF network element, and does not send the PDU in the subscription data Any one of session type, slice type, QoS parameter and/or DNN.
  • the AMF network element sends the permanent identifier of the second terminal device to the access gateway. It can be understood that the access gateway may determine the second terminal device according to the permanent identifier of the second terminal device.
  • the access gateway establishes a first PDU session, where the first PDU session is used to transmit at least one of the PDU session type, slice type, QoS parameter and/or DNN in the subscription data of the second terminal device.
  • the access gateway sends the first request message to the UPF network element through the user plane of the first PDU session.
  • the first request message is used to request at least one of PDU session type, slice type, QoS parameter and/or DNN in the subscription data.
  • the UPF network element forwards the first request message to the SMF network element.
  • the SMF network element forwards the first request message to the first data management network element.
  • the first data management network element sends at least one of the PDU session type, slice type, QoS parameter and/or DNN in the subscription data to the SMF network element.
  • the SMF network element forwards it to the UPF network element.
  • the UPF network element then forwards it to the access gateway through the user plane of the first PDU session. So far, the access gateway has obtained the subscription data.
  • the first data management network element sends at least one of the PDU session type, slice type, QoS parameter and/or DNN in the subscription data of the second terminal device to the access gateway through the user plane of the first network
  • the first data management network element may send the subscription data of the second terminal device to the access gateway through the user of the PDU session.
  • the first data management network element sends the subscription data of the second terminal device to the SMF network element.
  • the SMF network element forwards the subscription data of the second terminal device to the UPF network element.
  • the UPF network element forwards the subscription data of the second terminal device to the access gateway through the user plane of the PDU session. So far, the access gateway has obtained the subscription data of the second terminal device.
  • the first data management network element sends the subscription data of the second terminal device to the access gateway through the user plane of the first network.
  • the access gateway accesses the first network according to the subscription data.
  • the access gateway after the access gateway acquires the subscription data of the second terminal device, it can access the first network according to the acquired subscription data of the second terminal device.
  • the access gateway may store the acquired subscription data locally. And the access gateway can establish the second PDU session based on the subscription data.
  • the second PDU session is used to transmit service data related to the second terminal device, that is, the access gateway establishes different second PDU sessions for different second terminal devices.
  • the first network also establishes the second PDU session. If the second PDU session is an IP type PDU session, the first network allocates the UE IP address for the PDU session. After the access gateway receives the UE IP address, it sends it to the second terminal device.
  • the second terminal device uses the UE IP address to encapsulate the service data packet, and sends the encapsulated service data packet to the first network.
  • the access gateway may search for the subscription data of the second terminal device based on the identification information of the second terminal device. Then, the access gateway can initiate a registration process to the first network based on the found subscription data.
  • the access gateway may access the first network on behalf of the second terminal device.
  • the first data management network element in the first network may transfer the subscription data of the second terminal device to the access gateway through the control plane or the user plane. Therefore, it is realized that the second terminal device can access the first network; or the access gateway first directly registers with (or is referred to as accessing) the first network. Then, the first data management network element transmits the subscription data of the second terminal device to the access gateway through the established PDU session. In this way, the second terminal device can access the first network, thus solving the problem that the non-5GC terminal device cannot access the 5GC through the TWIF unified agent, and realizing the non-5GC terminal device accessing the 5GC through the access gateway.
  • the flow diagram includes:
  • the access gateway sends a registration request message to the AMF network element in the first network.
  • the access gateway after the access gateway determines that the second terminal device is accessing the first network for the first time, it sends a registration request message to the AMF network element in the control plane of the first network, and the registration request message may include the second terminal device The identification information and the first indication information and/or the second indication information.
  • the foregoing first indication information is used to indicate that the second terminal device is accessing the first network for the first time.
  • the first indication information may specifically be a first access indication and/or a subscription data request indication.
  • the first access indication is used to indicate that the second terminal device establishes a connection with the first network for the first time, and needs to request the subscription data of the second terminal device, or indicates that the access gateway does not have the subscription data of the second terminal device.
  • the subscription data request indication is used to indicate that the access gateway does not have the subscription data of the second terminal device, and needs to request the subscription data of the second terminal device. Since the authentication cannot be performed for the terminal equipment that does not support the SIM card. Therefore, for the second terminal device in this application, the above-mentioned second indication information is used to indicate skipping the authentication of the second terminal device.
  • the second indication information may specifically be an indication of omitting authentication.
  • the AMF network element determines that the second terminal device is accessing the first network for the first time.
  • the AMF network element determines, according to the first indication information in the registration request message, that the second terminal device is accessing the first network for the first time, and needs to request subscription data of the second terminal device.
  • the AMF network element sends a subscription data request message to the first data management network element.
  • the subscription data request message sent by the AMF network element to the first data management network element includes at least identification information of the second terminal device.
  • the first data management network element acquires identification information of the second terminal device.
  • the first data management network element receives the subscription data request message sent by the AMF network element. So far, the first data management network element has obtained the identification information of the second terminal device.
  • S601-S604 in the schematic flowchart shown in FIG. 6 may also be replaced with S701-S704 in the schematic flowchart shown in FIG. 7 .
  • the first data management network element obtains the identification information of the second terminal device connected to the access gateway through the user plane. Its specific implementation process is as follows:
  • the access gateway generates a subscription data request message.
  • the access gateway after the access gateway determines that the second terminal device is accessing the first network for the first time, the access gateway generates a subscription data request message for the second terminal device accessing the first network for the first time.
  • the subscription data request message includes at least identification information of the second terminal device.
  • the access gateway sends the subscription data request message to the UPF network element.
  • the access gateway sends the subscription data request message to the UPF network element in the first network through the user plane of the PDU session established in S401.
  • the UPF network element sends the subscription data request message to the SMF network element.
  • the UPF network element in the first network sends the subscription data request message to the SMF network element in the first network.
  • the SMF network element sends the subscription data request message to the first data management network element.
  • the SMF network element in the first network sends the subscription data request message to the first data management network element. So far, the first data management network element has obtained the identification information of the second terminal device contained in the subscription data request message.
  • the flow diagram includes:
  • the first data management network element determines, according to the first indication information, that the second terminal device is accessing the first network for the first time.
  • the subscription data request message sent to the first data management network element may further include the first indication information and/or the second indication information.
  • the first data management network element determines, according to the first indication information, that the second terminal device is accessing the first network for the first time.
  • the AMF network element sends the location information of the second terminal device to the first data management network element.
  • the AMF network element may also send the location information of the second terminal device to the first data management network element.
  • the location information may be first identification information of an access point of the second terminal device, physical location information of the second terminal device, and/or second identification information of the second network.
  • the location information of the second terminal device may be included in the subscription data request message, and sent by the AMF network element to the first data management network element.
  • the first data management network element determines a second data management network element corresponding to the second terminal device according to the location information of the second terminal device and/or the identification information of the second terminal device.
  • the first data management network element since the second terminal device is accessing the first network for the first time, after the first data management network element obtains the location information of the second terminal device, it determines the location information corresponding to the second terminal device according to the location information. The second data management network element. And/or, the first data management network element determines the second data management network element based on the service provider information of the second terminal device included in the identification information of the second terminal device in the subscription data request message.
  • the above steps S801-S803 implement sending the location information of the second terminal device to the first data management network element through the control plane.
  • the first data management network element determines the specific process of the second data management network element corresponding to the second terminal device in the second network, that is, the content described in FIG. 8 can also be replaced with FIG. 9 what is described. Specifically, as shown in FIG. 9 , the following steps may be included: S901-S904. It is realized that the access gateway sends the location information of the second terminal device to the first data management network element through the user plane. Its specific implementation process is as follows:
  • the access gateway sends the location information of the second terminal device to the UPF network element.
  • the access gateway sends the subscription data request message to the UPF network element in the first network through the user plane of the PDU session established in S501, and may also send the subscription data request message to the UPF network element in the first network through the user plane of the PDU session established in S501.
  • the location information of the second terminal device is sent to the UPF network element.
  • the location information of the second terminal device may also be included in the subscription data request message, and sent to the UPF network element through the user plane of the PDU session established in S501.
  • the UPF network element sends the location information of the second terminal device to the SMF network element.
  • the UPF network element in the first network forwards the acquired location information of the second terminal device to the SMF network element.
  • the SMF network element sends the location information of the second terminal device to the first data management network element.
  • the SMF network element forwards the acquired location information of the second terminal device to the first data management network element.
  • the first data management network element determines a second data management network element corresponding to the second terminal device according to the location information of the second terminal device and/or the identification information of the second terminal device.
  • the first data management network element determines the second data management network element according to the location information of the second terminal device. And/or, the first data management network element determines the second data management network element based on the service provider information of the second terminal device included in the identification information of the second terminal device in the subscription data request message.
  • the first data management network element is a UDM network element
  • the access gateway is a campus gateway
  • the second data management network element is a campus AAA server
  • the first network is a 5GC
  • the second network is a second terminal device and The network where the campus gateway resides.
  • the second terminal device is supported to access the 5GC as a UE, and the campus gateway acts as the proxy of the second terminal device.
  • the 5GC completes the access registration process of the second terminal device, and sends the subscription data required for the second terminal device to access the 5GC to the campus gateway through the control plane.
  • this embodiment involves the following process.
  • the second terminal device establishes a connection with the campus gateway.
  • a connection between the second terminal device and the campus gateway may be established through a network such as a wired network or a wireless network.
  • the wireless network may be a short-distance wireless communication technology, such as Bluetooth. This embodiment does not specifically limit the scheme for establishing a connection.
  • the campus gateway acquires identification information of the second terminal device.
  • the campus gateway acquires identification information of the second terminal device, where the identification information may be a MAC address and/or a device identification.
  • the identification information of the second terminal device includes service provider information of the second terminal device.
  • the campus gateway determines, according to the identification information, that the second terminal device is accessing the 5GC for the first time.
  • the campus gateway locally stores the subscription data of the second terminal device. Therefore, if the campus gateway does not find the subscription data of the second terminal device according to the identification information, it determines that the second terminal device is accessing the 5GC for the first time.
  • the campus gateway generates a registration request message and sends it to the AMF network element.
  • the campus gateway sends the production registration request message to the AMF network element on behalf of the second terminal device.
  • the above registration request message may include identification information of the second terminal device and first indication information and/or second indication information.
  • first indication information and the second indication information refer to the description of S701, which will not be repeated here.
  • the AMF network element determines according to the first indication information that the second terminal device is accessing the 5GC for the first time.
  • the AMF network element determines that the second terminal device is accessing the 5GC for the first time according to the first access indication and/or the subscription data request indication in the first indication information.
  • the first access indication and the subscription data request indication refer to the description of S701 , which will not be repeated here.
  • the AMF network element sends a subscription data request message to the UDM network element.
  • the AMF network element sends a subscription data request message to the UDM network element, so as to obtain the subscription data required for the second terminal device to access the 5GC.
  • the foregoing subscription data request message may include identification information of the second terminal device, first indication information, second indication information, and location information of the second terminal device.
  • the UDM network element determines according to the first indication information that the second terminal device is accessing the 5GC for the first time.
  • the UDM network element after the UDM network element obtains the first indication information in the subscription data request message, it determines that the second terminal device is accessing the 5GC for the first time according to the first access indication and/or the subscription data request indication therein.
  • the UDM network element determines the campus AAA server corresponding to the second terminal device according to the location information of the second terminal device and/or the identification information of the second terminal device.
  • the UDM network element After the UDM network element obtains the location information of the second terminal device in the subscription data request message, it can determine the campus AAA server corresponding to the second terminal device according to the location information. And/or, after the UDM network element acquires the identification information of the second terminal device, it determines the campus AAA server corresponding to the second terminal device according to the service provider information of the second terminal device included in the identification information.
  • the UDM network element sends an access parameter request message to the park AAA server.
  • the access parameters are stored in the campus AAA server.
  • the UDM network element sends an access parameter request message to the campus AAA server to obtain access parameters.
  • the foregoing access parameter request message includes at least identification information of the second terminal device.
  • the campus AAA server searches for device information of the second terminal device according to the identification information of the second terminal device.
  • the campus AAA server searches for the device information of the second terminal device according to the identification information.
  • the above device information may be service type information supported by the second terminal device, such as at least one of IP service, Ethernet service, or unstructured service, service bandwidth requirements and/or authentication parameters.
  • the campus AAA server sends an access parameter response message to the UDM network element.
  • the campus AAA server after finding the device information of the second terminal device, the campus AAA server sends an access parameter response message in response to the access parameter request message to the UDM network element.
  • the foregoing access parameter response message includes identification information and access parameters of the second terminal device, where the access parameters include device information.
  • the UDM network element assigns a permanent identifier to the second terminal device that accesses the 5GC for the first time.
  • the second terminal device that accesses the 5GC for the first time has no permanent identification. Therefore, the UDM network element assigns a permanent identifier to the second terminal device that accesses the 5GC for the first time.
  • the UDM network element generates subscription data of the second terminal device according to the access parameter.
  • subscription data is required for the second terminal device to access the 5GC. Therefore, the UDM network element will generate the subscription data required for the second terminal device to access the 5GC according to the access parameters.
  • the above subscription data includes: the permanent identifier of the second terminal device and at least one of PDU session type, slice type, QoS parameter and/or DNN.
  • the UDM network element replies to the park AAA server with a confirmation message.
  • the UDM network element replies with an acknowledgment message to the campus AAA server.
  • the foregoing confirmation message includes: identification information and a permanent identification of the second terminal device.
  • the campus AAA server knows the name of the second terminal device in the 5GC, that is, the permanent identifier of the second terminal device.
  • the UDM network element sends the subscription data of the second terminal device to the AMF network element.
  • the subscription data of the second terminal device is sent to the campus gateway through the control plane. Therefore, in this step, the UDM network element first sends the subscription data of the second terminal device to the AMF network element.
  • the AMF network element forwards the subscription data of the second terminal device to the campus gateway.
  • the AMF network element forwards the subscription data of the second terminal device to the campus gateway. So far, the subscription data of the second terminal device is sent to the campus gateway through the control plane.
  • the AMF network element will also assign a temporary identifier to the second terminal device.
  • the temporary identifier carries an AMF network element identifier.
  • the UDM network element sends the second indication information to the AUSF network element.
  • the UDM network element sends the second indication information, such as omitting the authentication and authentication indication, to the AUSF network element, so that the AUSF network element skips the process of not supporting the SIM card or the NAS function in this embodiment.
  • the second terminal device that is not a 5GC subscriber performs authentication.
  • the AUSF network element skips performing authentication on the second terminal device.
  • the AUSF network element skips performing authentication on the second terminal device according to the acquired second indication information.
  • the campus gateway saves the subscription data.
  • the campus gateway saves it locally.
  • the campus gateway sends a second PDU session establishment request message to the 5GC according to the subscription data.
  • the campus gateway in order to transmit service data related to the second terminal device, the campus gateway needs to establish different second PDU sessions for different second terminal devices to provide business services for them. Therefore, the campus gateway sends a second PDU session establishment request message to the 5GC according to the subscription data.
  • the 5GC establishes a packet forwarding control protocol (paeket forwarding control protocol, PFCP) session between the SMF network element and the UPF network element.
  • PFCP packet forwarding control protocol
  • the 5GC in order to establish the second PDU session, the 5GC needs to establish the PFCP session.
  • the 5GC sends a second PDU session response message to the campus gateway.
  • the 5GC in response to the second PDU session request message, the 5GC sends a second PDU session response message to the campus gateway. So far, the second PDU session is established successfully.
  • the 5GC sends the UE IP address allocated for the second terminal device to the campus gateway.
  • the 5GC sends the UE IP address allocated for the second terminal device to the campus gateway.
  • the campus gateway sends the aforementioned UE IP address to the second terminal device.
  • the campus gateway forwards the UE IP address to the second terminal device for encapsulating the service data packet.
  • This embodiment realizes that the campus gateway acts as a proxy for the second terminal device to access the 5GC.
  • the 5GC sends the subscription data required for the second terminal device to access the 5GC to the campus gateway through the control plane.
  • the second terminal device is supported to access the 5GC as a UE, and the campus gateway acts as a proxy for the second terminal device.
  • the 5GC completes the access registration process of the second terminal device.
  • Embodiment 2 sends the subscription data required for the second terminal device to access the 5GC to the campus gateway through the user plane.
  • this embodiment involves the following process.
  • S1101-S1114 is the same as the specific implementation process of S1001-S1014 in Embodiment 1, and will not be repeated here.
  • the UDM network element sends the permanent identifier in the subscription data of the second terminal device to the AMF network element.
  • the UDM network element sends all the content included in the subscription data to the AMF network element.
  • This embodiment is different from Embodiment 1.
  • the UDM network element in this embodiment sends the permanent identifier in the subscription data to the AMF network element instead of sending the first information in the subscription data.
  • the above-mentioned first information includes: PDU session type , slice type, QoS parameter and/or at least one of DNN.
  • the AMF network element sends the permanent identifier to the campus gateway.
  • the AMF network element after obtaining the permanent identifier in the subscription data, the AMF network element forwards it to the campus gateway.
  • the campus gateway establishes the first PDU session.
  • the campus gateway establishes a first PDU session for transmitting the first information in the subscription data of the second terminal device.
  • the campus gateway sends the first request message to the UPF network element through the user plane of the first PDU session.
  • the campus gateway sends the first request message to the UPF network element through the user plane of the first PDU session, so as to request the first information in the subscription data.
  • the UPF network element forwards the first request message to the SMF network element.
  • the UPF network element forwards the acquired first request message to the SMF network element.
  • the SMF network element forwards the first request message to the UDM network element.
  • the SMF network element forwards the obtained first request message to the UDM network element.
  • the UDM network element sends the first information in the subscription data to the SMF network element.
  • the UDM network element sends the acquired first information in the subscription data, that is, at least one of the PDU session type, slice type, QoS parameter and/or DNN to the SMF network element.
  • the SMF network element forwards the first information to the UPF network element.
  • the SMF network element forwards the acquired first information to the UPF network element.
  • the UPF network element forwards the first information to the campus gateway through the user plane of the first PDU session.
  • the UPF network element forwards the first information to the campus gateway through the user plane of the first PDU session. So far, the campus gateway has obtained all the content in the subscription data.
  • S1124-S1131 is the same as the specific implementation process of S1017-S1024 in Embodiment 1, and will not be repeated here.
  • At least one of the PDU session type, slice type, QoS parameter and/or DNN in the subscription data is transmitted to the campus gateway through the user plane.
  • the subscription data contains too many parameters and is inconvenient to be transmitted through the control plane solution in Embodiment 1
  • the user plane transmission solution in Embodiment 2 may be used.
  • the campus gateway accesses the 5GC as a UE. And the 5GC sends the subscription data required for the second terminal device to access the 5GC to the campus gateway through the user plane of the PDU session.
  • this embodiment involves the following process.
  • the campus gateway connects to the 5GC as a terminal device.
  • the campus gateway initiates a 5GC registration process as a terminal device.
  • the campus gateway establishes a PDU session as a terminal device.
  • the campus gateway after accessing the 5GC, the campus gateway establishes a PDU session as a terminal device for transmitting subscription data of the second terminal device.
  • the campus gateway establishes a connection with the second terminal device.
  • This step is the same as S1001 in Embodiment 1, and will not be repeated here.
  • the campus gateway sends a subscription data request message to the UPF network element of the 5GC.
  • the campus gateway sends a subscription data request message to the UPF network element of the 5GC through the user plane of the PDU session, so as to request the subscription data.
  • the foregoing subscription data request message includes identification information of the second terminal device, first indication information, and location information of the second terminal device.
  • the UPF network element forwards the subscription data request message to the SMF network element.
  • the UPF network element forwards the acquired subscription data request message to the SMF network element.
  • the SMF network element forwards the subscription data request message to the UDM network element.
  • the SMF network element forwards the acquired subscription data request message to the UDM network element.
  • the UDM network element determines, according to the first indication information, that the second terminal device is accessing the 5GC for the first time.
  • the UDM network element determines that the second terminal device is accessing the 5GC for the first time according to the first access indication and/or subscription data request indication in the first indication information.
  • the UDM network element determines the campus AAA server corresponding to the second terminal device according to the location information of the second terminal device and/or the identification information of the second terminal device.
  • the UDM network element determines the campus AAA server corresponding to the second terminal device according to the acquired location information of the second terminal device in the subscription data request message. And/or, the UDM network element determines the campus AAA server corresponding to the second terminal device according to the service provider information included in the identification information of the second terminal device.
  • S1211-S1215 is the same as the specific implementation process of S1009-S1013 in Embodiment 1, and will not be repeated here.
  • the UDM network element sends the subscription data to the SMF network element.
  • the UDM network element sends the generated subscription data to the SMF network element.
  • the SMF network element forwards the subscription data to the UPF network element.
  • the SMF network element forwards the acquired subscription data to the UPF network element.
  • the UPF network element forwards the subscription data to the campus gateway through the user plane of the PDU session.
  • the UPF network element forwards the subscription data to the campus gateway through the user plane of the PDU session. So far, the campus gateway has obtained all the contents of the contract data.
  • S1219-S1226 is the same as the specific implementation process of S1017-S1024 in Embodiment 1, and will not be repeated here.
  • the campus gateway registers with the 5GC as an independent UE.
  • the UPF network element of the 5GC sends the subscription data required for the second terminal device to access the 5GC to the campus gateway through the user plane of the PDU session.
  • both the first data management network element and the access gateway may include a hardware structure and/or a software module, and a hardware structure, a software module, or a hardware structure plus a software module form to achieve the above-mentioned functions. Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • FIG. 13 is a schematic structural diagram of a communication device 1300 provided by an embodiment of the present application, and the device is used to implement the method described in the foregoing method embodiment.
  • the communication device may be a device in the first data management network element or a device that can be matched with the first data management network element.
  • the communication device may include a module or unit corresponding to the method/operation/step/action performed by the first data management network element in the above method embodiment, and the unit may be a hardware circuit or
  • software may also be realized by combining hardware circuits with software.
  • the apparatus includes: a first acquiring unit 1301 and a first sending unit 1302;
  • the first acquiring unit 1301 is configured to acquire the identification information of the second terminal device connected to the access gateway in the second network;
  • the first obtaining unit 1301 is further configured to obtain the access parameters of the second terminal device from the second data management network element corresponding to the second terminal device in the second network according to the identification information;
  • the first acquiring unit 1301 is further configured to acquire the subscription data of the second terminal device according to the access parameters;
  • the first sending unit 1302 is configured to send the subscription data of the second terminal device to the access gateway.
  • the first obtaining unit 1301 is further configured to obtain first indication information, where the first indication information is used to indicate that the second terminal device is accessing the first network for the first time.
  • the first obtaining unit 1301 is further configured to obtain second indication information, where the second indication information is used to indicate skipping the authentication of the second terminal device;
  • the first sending unit 1302 is further configured to send second indication information to the AUSF network element.
  • the first acquiring unit 1301 is further configured to acquire the permanent identifier of the second terminal device according to the access parameter and/or the identifier information of the second terminal device.
  • the terminal device does not support a SIM card and does not support a NAS function.
  • the foregoing apparatus 1300 further includes a first determining unit 1303;
  • the first obtaining unit 1301 is also configured to obtain location information of the second terminal device
  • the first determining unit 1303 is configured to determine the second data management network element according to the location information.
  • the first acquiring unit 1301 is specifically configured to: generate the subscription data of the second terminal device according to the access parameters during the registration process.
  • the first sending unit 1302 is specifically configured to:
  • the subscription data of the second terminal device is sent to the access gateway.
  • the first sending unit 1302 is specifically configured to:
  • the first data management network element sends the subscription data to the SMF network element, so that the SMF network element transmits the subscription data to the access gateway through the PDU session corresponding to the first DNN, and the first DNN uses Used to indicate that the PDU session is used to transmit subscription data.
  • FIG. 14 is a schematic structural diagram of a communication device 1400 provided by an embodiment of the present application, and the device is used to implement the methods described in the foregoing method embodiments.
  • the communication device may be a device in the access gateway or a device that can be matched with the access gateway.
  • the communication device may include a module or unit corresponding to one-to-one execution of the methods/operations/steps/actions performed by the access gateway in the above method embodiments, the unit may be a hardware circuit or software, It can also be implemented by combining hardware circuits with software.
  • the device with a schematic structural diagram includes: a first connection unit 1401, a second acquisition unit 1402, and a first access unit 1403;
  • the first connection unit 1401 is configured to establish a connection with a second terminal device in the second network
  • the second acquiring unit 1402 is configured to acquire the subscription data of the second terminal device from the first network
  • the first access unit 1403 is configured to access the first network according to the subscription data.
  • the foregoing apparatus 1400 further includes: a second determining unit 1404;
  • the second determining unit 1404 is configured to determine that there is no subscription data of the second terminal device locally.
  • the second determining unit 1404 is further configured to determine, according to the identification information of the second terminal device, that the second terminal device is accessing the first network for the first time.
  • the foregoing apparatus 1400 further includes: a second sending unit 1405;
  • the second sending unit 1405 is configured to send a registration request message to the first network, where the registration request message includes first indication information and/or second indication information, and the first indication information is used to indicate that the second terminal device accesses the first network for the first time , the second indication information is used to indicate to skip performing authentication on the second terminal device.
  • the second acquiring unit 1402 is specifically configured to:
  • the access gateway obtains the subscription data of the second terminal device from the first network.
  • the foregoing apparatus 1400 further includes: an establishing unit 1406;
  • the establishment unit 1406 is used to establish a PDU session for transmitting subscription data
  • the second obtaining unit 1402 is further configured to obtain the subscription data of the second terminal device from the first network through the user plane of the PDU session.
  • the second acquiring unit 1402 is further configured to acquire the permanent identifier of the second terminal device from the first network during the registration process;
  • the second determining unit 1404 is further configured to determine the second terminal device according to the permanent identifier.
  • the embodiment of the present application also provides a communication device 1500 for implementing the function of the first data management network element or access gateway in the above method.
  • the communication device 1500 may be a system on a chip. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the communication device 1500 includes at least one processor 1510, configured to implement the functions of the first data management network element and the access gateway in the method provided in the embodiment of the present application.
  • the communication device 1500 may also include a communication interface 1520 .
  • the communication interface 1520 may be a transceiver, a circuit, a bus, a module or other types of communication interfaces, and is used for communicating with other devices through a transmission medium.
  • the processor 1510 may execute the functions performed by the first obtaining unit 1301 in the communication device 1300 and the functions performed by the second obtaining unit 1402 in the communication device 1400; the communication interface 1520 may be used to perform the functions performed by the first sending unit 1302 in the communication device 1300.
  • the processor 1510 is used to obtain the identification information of the second terminal device connected to the access gateway in the second network;
  • the second data management network element corresponding to the second terminal device obtains the access parameters of the second terminal device; obtains the subscription data of the second terminal device according to the access parameters;
  • the communication interface 1520 is used to send the second terminal device to the access gateway contract data.
  • the communication interface 1520 is used to establish a connection with the second terminal device in the second network; the processor 1510 is used to obtain the information of the second terminal device from the first network Subscription data; the communication interface 1520 is also used to access the first network according to the subscription data.
  • the communication interface 1520 is also used to perform other receiving or sending steps or operations involved in the method of the first data management network element or the access gateway in the above method embodiments.
  • the processor 1510 may also be configured to perform other corresponding steps or operations in the above method embodiments except for sending and receiving, which will not be repeated here.
  • the communication device 1500 may also include at least one memory 1530 for storing program instructions and/or data.
  • the memory 1530 is coupled to the processor 1510 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1520 may cooperate with memory 1530 .
  • Processor 1510 may execute program instructions stored in memory 1530 .
  • at least one of the at least one memory may be integrated with the processor.
  • the memory 1530 is located outside the communication device 1500 .
  • the specific connection medium among the communication interface 1520, the processor 1510, and the memory 1530 is not limited in this embodiment of the present application.
  • the memory 1530, the processor 1510, and the communication interface 1520 are connected through the bus 1540.
  • the bus is represented by a thick line in FIG. 15, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 15 , but it does not mean that there is only one bus or one type of bus.
  • the processor 1510 may be one or more central processing units (Central Processing Unit, CPU).
  • CPU Central Processing Unit
  • the processor 1510 may be a single-core CPU or a multi-core CPU.
  • the processor 1510 may 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, or a discrete hardware component, and may realize or execute the The disclosed methods, steps and logical block diagrams.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the memory 1530 may include but not limited to hard disk (hard disk drive, HDD) or solid-state drive (solid-state drive, SSD) and other non-volatile memories, random access memory (Random Access Memory, RAM), Erase programmable read-only memory (Erasable Programmable ROM, EPROM), read-only memory (Read-Only Memory, ROM) or portable read-only memory (Compact Disc Read-Only Memory, CD-ROM), etc.
  • a memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, and is used for storing program instructions and/or data.
  • the embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored.
  • the computer program is executed by a processor, the corresponding Some or all of the steps of the communication method are performed.
  • the embodiment of the present application also provides a computer program product including instructions.
  • the computer program product When the computer program product is run on a computer, it causes the computer to perform the communication corresponding to Figure 5-12. Some or all steps of the method.
  • the embodiment of the present application also provides a communication system 1600, including a first data management network element 1601, configured to perform various steps performed by the first data management network element in the above method embodiments;
  • An authentication service function AUSF network element 1602 configured to communicate with the first data management network element
  • the session management function SMF network element 1603 is configured to communicate with the first data management network element.

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Abstract

本申请实施例公开了一种通信方法及装置，方法包括：第一网络中第一数据管理网元获取第二网络中接入网关连接的终端设备的标识信息；第一数据管理网元根据标识信息从第二网络中终端设备对应的第二数据管理网元获取终端设备的接入参数；第一数据管理网元根据接入参数，获取终端设备的签约数据；所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据。

Description

一种通信方法及装置
本申请要求于2021年10月22日提交中国国家知识产权局、申请号为202111235599.3、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
在第三代合作伙伴计划(3rd generation partnership project，3GPP)定义的5G网络架构不但支持终端设备通过3GPP标准组定义的无线技术，如长期演进(long term evolution，LTE)，5G无线接入网(radio access network，RAN)等接入5G核心网(5G core network，5GC)，而且支持采用Non-3GPP接入技术通过Non-3GPP转换功能(non-3GPP interworking function，N3IWF)或下一代接入网关(next generation paeket data gateway，ngPDG)接入5GC。
然而，对于既不支持非接入层(non-access stratum，NAS)功能，也不支持客户识别模块(subscriber identity module，SIM)卡，且不是5GC的签约用户的non-5GC终端设备，目前不支持其接入5GC。
发明内容
本申请提出一种通信方法及装置，能够解决不支持SIM卡、不支持NAS功能且不是5GC的签约用户的终端设备不能够接入5GC的问题。
第一方面，本申请提出一种通信方法，该方法中，终端设备通过第二网络接入第一网络。该方法包括：
第一网络中第一数据管理网元获取第二网络中接入网关连接的终端设备的标识信息。示例性的，第一网络可以为5GC或未来移动通信系统，如6G等。第二网络可以为园区网络、私有网络或本地网络等，本申请不做限制。
第一数据管理网元根据标识信息从第二网络中终端设备对应的第二数据管理网元获取终端设备的接入参数。示例性的，上述接入参数包括业务类型信息，如IP类型业务，Ethernet类型业务，或非结构化类型业务、业务带宽需求和/或鉴权认证参数中的至少一个。
第一数据管理网元根据接入参数，获取终端设备的签约数据。示例性的，上述签约数据包括：终端设备的永久标识以及PDU会话类型、切片类型、服务质量(quality of service，QoS)参数和/或数据网络名称(data network name，DNN)中的至少一个。其中，终端设备的永久标识与终端设备的标识信息存在对应关系。
第一数据管理网元向接入网关发送终端设备的签约数据。
在一种可能的实现中，该方法还包括：
第一数据管理网元获取第一指示信息，该第一指示信息用于指示终端设备为首次接入所述第一网络。示例性的，第一指示信息可以为首次接入指示和/或签约数据请求指示。首次接入指示用以表示终端设备第一次与第一网络建立连接，需要请求终端设备的签约数据，或者表示接入网关没有终端设备的签约数据，例如，可能因为接入网关故障恢复，丢失了原来的签约数据，需要请求终端设备的签约数据。签约数据请求指示用以表示接入网关没有终端设备的签约数据，需要请求终端设备的签约数据。
在一种可能的实现中，该方法还包括：
第一数据管理网元获取第二指示信息，该第二指示信息用于指示跳过对终端设备进行鉴权认证。示例性的，第二指示信息可以具体为省略鉴权认证指示。
第一数据管理网元向鉴权服务功能(authentication server funetion，AUSF)网元发送第二指示信息。AUSF网元根据第二指示信息跳过对终端设备进行鉴权认证。
在一种可能的实现中，该方法还包括：
第一数据管理网元根据接入参数和/或终端设备的标识信息，获取终端设备的永久标识。
在一种可能的实现中，终端设备不支持SIM卡、不支持NAS功能且不是5GC的签约用户。
在一种可能的实现中，该方法还包括：
第一数据管理网元获取终端设备的位置信息；
第一数据管理网元根据位置信息，确定第二数据管理网元。
在一种可能的实现中，上述第一数据管理网元根据接入参数，获取终端设备的签约数据，包括：
在注册流程，第一数据管理网元根据接入参数，生成终端设备的签约数据。
在一种可能的实现中，上述第一数据管理网元向接入网关发送终端设备的签约数据，包括：
通过协议数据单元(protocol data unit，PDU)会话的用户面，第一数据管理网元向接入网关发送终端设备的签约数据，上述PDU会话用于传输签约数据，实现了通过用户面传递签约数据给接入网关，适用于签约数据包含的参数较多，不便于通过控制面传输签约数据给接入网关的情况；或
在注册流程，第一数据管理网元向接入网关发送终端设备的签约数据，实现了通过控制面传递签约数据给接入网关。
在一种可能的实现中，上述通过协议数据单元PDU会话的用户面，第一数据管理网元向接入网关发送终端设备的签约数据，包括：
通过协议数据单元PDU会话的用户面，第一数据管理网元将签约数据发送给(session management funetion，SMF)网元，以使得SMF网元通过第一DNN对应的PDU会话向接入网关传输签约数据，上述第一DNN用于指示PDU会话用于传输签约数据，该第一DNN为预配置的DNN。
本申请提供的技术方案中的第一网络中的第一数据管理网元根据获取的终端设备(即不支持SIM卡、不支持NAS功能且不是5GC的签约用户的终端设备)的标识信息 获取终端设备的接入参数。然后根据该接入参数获取终端设备的签约数据。继而将该签约数据发送至第二网络中的接入网关。实现了不支持SIM卡、不支持NAS功能且不是5GC的签约用户的终端设备通过第二网络接入第一网络。
第二方面，本申请还提出一种通信方法，该方法包括：
第二网络中的接入网关与第二网络中的终端设备建立连接，本申请不对连接建立的方式做限制。
接入网关从第一网络获取终端设备的签约数据。示例性的，上述签约数据包括：终端设备的永久标识以及PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。
接入网关根据签约数据接入第一网络。
在一种可能的实现中，该方法还包括：
接入网关确定本地没有终端设备的签约数据，因此需要向第一网络请求终端设备的签约数据。
在一种可能的实现中，该方法还包括：
接入网关根据终端设备的标识信息，确定终端设备为首次接入第一网络。
在一种可能的实现中，该方法还包括：
接入网关向第一网络发送注册请求消息，该注册请求消息包括第一指示信息和/或第二指示信息，上述第一指示信息用于指示终端设备首次接入所述第一网络，上述第二指示信息用于指示跳过对终端设备进行鉴权认证。
在一种可能的实现中，上述接入网关从第一网络获取终端设备的签约数据，包括：
在注册流程，接入网关从第一网络获取终端设备的签约数据。
在一种可能的实现中，该方法还包括：
接入网关建立用于传输签约数据的协议数据单元PDU会话；
上述接入网关从第一网络获取终端设备的签约数据，包括：
通过PDU会话的用户面，接入网关从第一网络获取终端设备的签约数据，实现了通过用户面传递签约数据给接入网关，适用于签约数据包含的参数较多，不便于通过控制面传输签约数据给接入网关的情况。
在一种可能的实现中，上述在注册流程，接入网关从第一网络获取终端设备的签约数据，包括：
在注册流程，接入网关从第一网络获取终端设备的永久标识；
该方法还包括：
接入网关根据永久标识，确定终端设备。
本申请提供的技术方案中的第二网络中的接入网关根据从第一网络获取的终端设备(即不支持SIM卡、不支持NAS功能且不是5GC的签约用户的终端设备)的签约数据接入第一网络。实现了不支持SIM卡、不支持NAS功能且不是5GC的签约用户的终端设备通过第二网络接入第一网络。
第三方面，本申请提出一种通信装置，包括至少一个处理器，所述处理器用于执行存储器中存储的程序，当所述程序被执行时，使得所述通信装置执行：
如第一方面及其各种可能的实现中的方法；或
如第二方面及各种可能的实现中的方法。
在一种可能的实现中，该通信装置还包括上述存储器。可选的，处理器和存储器可以集成在一起。
在另一种可能的实现中，上述存储器设置在该装置之外。
第四方面，本申请提出一种包含指令的计算机程序产品，当该计算机程序产品在计算机上运行时，使得如第一方面及其各种可能的实现中的方法被该计算机执行；或者如第二方面及其各种可能的实现中的方法被该计算机执行。
第五方面，本申请提出一种计算机可读存储介质，该计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时，如第一方面及其各种可能的实现中的方法被执行；或者如第二方面及其各种可能的实现中的方法被执行。
第六方面，本申请提供一种通信系统，该通信系统包括：
第一数据管理网元，用于执行第一方面及其各种可能的实现中的方法；
AUSF网元，用于与第一数据管理网元进行通信；以及
SMF网元，用于与第一数据管理网元进行通信。
附图说明
图1为一种可能的实现方式中5G服务化网络架构的示意图；
图2为一种可能的实现方式中3GPP接入5GC的网络架构的示意图；
图3为一种可能的实现方式中非可信Non-3GPP(Untrusted Non-3GPP Access)接入5GC的网络架构的示意图；
图4为一种可能的实现方式中可信WLAN(Trusted WLAN Access Point，TWAP)接入5GC的网络架构的示意图；
图5为本申请实施例提供的一种通信方法的流程示意图；
图6为本申请实施例提供的第一数据管理网元通过控制面获取接入网关连接的第二终端设备的标识信息的流程示意图；
图7为本申请实施例提供的第一数据管理网元通过用户面获取接入网关连接的第二终端设备的标识信息的流程示意图；
图8为本申请实施例提供的第一数据管理网元确定第二网络中第二终端设备对应的第二数据管理网元的流程示意图；
图9为本申请实施例提供的第一数据管理网元确定第二网络中第二终端设备对应的第二数据管理网元的另一流程示意图；
图10为本申请实施例提供的一种通信方法的另一流程示意图；
图11为本申请实施例提供的一种通信方法的另一流程示意图；
图12为本申请实施例提供的一种通信方法的另一流程示意图；
图13为本申请实施例提供的一种通信装置的结构示意图；
图14为本申请实施例提供的一种通信装置的另一结构示意图；
图15为本申请实施例提供的一种通信装置的又一结构示意图；
图16为本申请实施例提供的一种通信系统的结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面结合附图对本申请实施例具体实施方式做详细描述。
需要说明的是，本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。本申请实施例的说明书和权利要求书中的术语“第一”和“第二”等是用于区别不同的对象，而不是用于描述对象的特定顺序。例如，第一数据管理网元和第二数据管理网元等是用于区别不同的数据管理网元，而不是用于描述目标对象的特定顺序。在本申请实施例中，“示例性的”、“举例来说”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”、“举例来说”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。在本申请实施例的描述中，除非另有说明，“多个”的含义是指两个或两个以上。
示例性的，图1示出了一种5G服务化网络架构的示意图。如图1所示，该网络结构采用服务化接口，可以包括用户设备(user equipment，UE)、5GC以及无线接入网(radio access network，RAN)，即5G接入网等。UE可以通过N1接口接入到5GC，也可以先接入RAN，再由RAN通过N2或N3接口接入到5GC。其中，5GC包括控制面功能(control plane function，CPF)、用户面功能(user plane function，UPF)、应用功能(application function，AF)网元和数据网络(data network，DN)网元等。
CPF主要负责用户注册认证、移动性管理及向UPF下发数据包转发策略、QoS控制策略等，可进一步细分为图1中的网络切片选择功能(Network Slice Selection Function，NSSF)网元、网络开放功能(Network Exposure Function，NEE)网元、网络存储功能(NF Repository Function，NRF)网元、策略控制功能(policy control function，PCF)网元、统一数据管理(unified data manager，UDM)网元、AUSF网元、接入与移动性管理功能(access and mobility management function，AMF)网元和SMF网元等。
具体地，NSSF网元负责选择为UE服务的网络切片实例集。NEE网元负责网络能力的收集、分析和重组以及网络能力的开放；NRF网元用来进行网络功能(network function，NF)登记、管理、状态监测，实现所有NF的自动化管理。PCF网元主要用来下发业务相关的策略给AMF网元或SMF网元。例如，PCF网元从UDM网元获得用户签约策略并下发到AMF网元或SMF网元等。UDM网元主要用来存储UE的签约数据。AUSF网元主要负责对UE进行鉴权认证，确定UE的合法性。AMF网元负责用户接入时的注册流程及用户移动过程中的位置管理。SMF网元负责用户发起业务时网络侧建立相应的会话连接，为用户提供具体服务，例如，基于SMF网元和UPF网元之间的N4接口向UPF网元下发数据包转发策略、QoS策略等。
UPF主要负责分组数据包的路由和转发、QoS控制以及计费信息统计等。例如，UPF可以支持上行链路分类器以将数据包路由到DN的实例等。
AF网元主要用来发送应用相关需求给PCF网元，使得PCF网元生成对应的策略。例如，应用可以是运营商内部的应用，如Volte AF。如果AF网元与其他NF，如PCF网元在一个可信域内，则可以直接将应用相关需求发送至其他NF，如PCF网元。
DN网元为UE提供服务，如提供移动运营商业务、Internet服务或第三方服务等。
可理解的是，图1所示的5G网络架构不但支持3GPP标准组定义的无线技术，如LTE，5G RAN等接入5GC，而且支持non-3GPP接入技术通过N3IWF或ngPDG接入5GC。
示例性的，图2示出了一种3GPP接入5GC的网络架构的示意图。该网络架构包括：AMF网元、SMF网元、UPF网元、DN网元、3GPP接入点(access point，AP)以及UE。其中，AMF网元、SMF网元、UPF网元和DN网元的功能同前文对图1中各个网元的描述，在此不再赘述。
在一个例子中，在图2中，本地公用陆地移动网(home public land mobile network，HPLMN)中的UE可以先与3GPP AP通过无线网络，如蓝牙建立连接。然后，3GPP AP再通过N2接口接入5GC。
示例性的，图3示出了非可信Non-3GPP接入5GC的网络架构的示意图。该网络架构采用点对点接口协议，可以包括：AMF网元、SMF网元、UPF网元、DN网元、N3IWF、非可信Non-3GPP AP以及UE等。其中，AMF网元、SMF网元、UPF网元和DN网元的功能同前文对图1中各个网元的描述，在此不再赘述。
在一个例子中，在图3中，当非可信Non-3GPP接入5GC时，UE可以通过Y1接口与非可信Non-3GPP AP建立连接。然后，非可信Non-3GPP AP通过Y2接口与N3IWF建立连接。其中，N3IWF为非可信Non-3GPP接入网关。之后，N3IWF代理UE生成注册请求消息，并通过N2接口将该注册请求消息发送给AMF网元。
在一个例子中，本申请实施例中提及的5GC也可以支持可信Non-3GPP接入和/或固定网络接入。其中，可信Non-3GPP网络包括可信的WALN网络，固定网络包括固定家庭网络接入等。
示例性的，图4示出了可信WLAN接入5GC的网络架构的示意图。该网络架构采用点对点接口协议，可以包括：AMF网元、SMF网元、UPF网元、DN网元、可信WLAN互连功能(trusted WLAN interworking function，TWIF)、可信WLAN AP以及不支持5G的WLAN(Non 5C WLAN，N5CW)终端设备。为便于描述，下文将N5CW终端设备称为第一终端设备。其中，AMF网元、SMF网元、UPF网元和DN网元的功能同前文对图1中各个网元的描述，在此不再赘述。
可以理解的是，图4中所示的可信WLAN接入5GC的网络架构与图3中所示的非可信Non-3GPP接入架构类似，两者的主要区别为：图4中的TWIF替换了图3中的N3IWF，图4中的可信WLAN AP替换了图3中的非可信Non-3GPP AP。
在一个例子中，UE与上述接入网关之间的接入网设备包括WLAN AP，固定网络接入网设备(fixed access network，FAN)，交换机，路由器等。
需要说明的是，在图4中，当第一终端设备与TWIF建立连接后，TWIF代理第一终端设备可以生成NAS消息，如注册请求消息，并发送给AMF网元。
上述图4中所描述的第一终端设备虽然不支持NAS功能，但支持SIM卡，且是5GC的签约用户。因此，UDM中有第一终端设备相关的签约数据。
需要说明的是，针对图4中所描述的第一终端设备，其终端类型基本为手机或智能终端，因此TWIF上无需配置终端粒度的上下文信息，即TWIF采用缺省的签约数据即可为所有N5CW终端代理接入5GC。但对于既不支持NAS功能，也不支持SIM卡，且不是5GC的签约用户的non 5GC终端设备，由于其终端类型广泛，比如传感器设备、工业终端，电子标签(radio frequency identification，RFID)设备、摄像头、笔记本电脑或iPad等。不同的设备类型支持的业务千差万别，因此目前无法通过TWIF统一代理上述既不支持NAS功能，也不支持SIM卡，且不是5GC的签约用户的non 5GC终端设备接入5GC。为便于描述，下文将既不支持NAS功能，也不支持SIM卡，且不是5GC的签约用户的non 5GC终端设备称为第二终端设备。
为解决上述问题，本申请实施例提出一种通信方法。该通信方法中，接入网关可以代理第二终端设备接入5GC，通过控制面或用户面获取第二终端设备的签约数据。接入网关也可以独立作为终端设备接入5GC，通过用户面获取第二终端设备的签约数据。进而实现了第二终端设备通过第二终端设备和接入网关所在网络接入5GC或未来移动通信系统，如6G等，即第二终端设备通过第二终端设备和接入网关所在网络注册到5GC以及未来移动通信系统。为便于叙述，下文将5GC或未来移动通信系统称为第一网络，将第二终端设备和接入网关所在网络称为第二网络，示例性的，第二网络可以为园区网络、私有网络或本地网络等，本申请不作限制。
示例性的，图5示出了本申请实施例提出的一种通信方法的流程示意图。该流程示意图中主要涉及第一数据管理网元、接入网关、第二终端设备以及第二终端设备对应的第二数据管理网元之间的交互。第一数据管理网元与接入网关之间可以通过有线网络建立连接，以进行数据交互。第一数据管理网元与第二终端设备对应的第二数据管理网元之间可以通过有线网络建立连接，以进行数据交互。接入网关与第二终端设备之间可以通过有线网络或无线网络等网络建立连接，以进行数据交互。示例性的，接入网关与第二终端设备之间可以通过短距离无线通信技术建立连接，如通过蓝牙建立连接。
如图5所示，该通信方法可以包括以下步骤：
S501，第二网络中的接入网关与第二网络中的第二终端设备建立连接。
具体地，第二网络中的接入网关直接与第二网络中的第二终端设备建立连接。本申请不对建立连接的方案做限制。
作为一种可能的实现方式，在接入网关与第二终端设备建立连接之前，接入网关首先作为终端设备接入第一网络，也即接入网关作为终端设备发起第一网络的注册流程。然后，接入网关作为终端设备建立PDU会话，该PDU会话用于传输第二终端设备的签约数据。该签约数据包括：终端设备的永久标识以及PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。最后，第二网络中的接入网关与第二网络中的第二终端设备建立连接。
S502，第一网络中的第一数据管理网元获取接入网关连接的第二终端设备的标识信息。
具体地，在第二网络中的接入网关与第二网络中的第二终端设备建立连接后，第一网络中的第一数据管理网元即可以获取接入网关连接的第二终端设备的标识信息。
在一个例子中，在第一数据管理网元获取标识信息之前，接入网关可以判断第二终端设备是否是首次接入第一网络。例如，在S501中的第二网络中的接入网关与第二网络中的第二终端设备建立连接后，接入网关获取第二终端设备的标识信息。示例性的，该标识信息可以具体为媒体访问控制(media access control，MAC)地址和/或设备标识等，本申请不做限制。可选的，上述第二终端设备的标识信息中包含第二终端设备的服务提供商信息。接下来，接入网关基于第二终端设备的标识信息查找第二终端设备的签约数据。其中，签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个可以作为第二终端设备接入第一网络所需的参数。由于对于非首次接入第一网络的第二终端设备，本地是存储有第二终端设备的签约数据的，因此，若本地没有查找到第二终端设备的签约数据，则接入网关确定第二终端设备为首次接入第一网络。又如，接入网关不判断第二终端设备是否是首次接入第一网络，而是直接默认是首次接入第一网络。其中，当为首次接入第一网络时，第一数据管理网元可以通过以下两种方式获取标识信息。
第一种方式为：第一数据管理网元可以通过控制面获取接入网关连接的第二终端设备的标识信息，其具体过程参见下文对图6所示的流程示意图的详细描述。
第二种方式为：第一数据管理网元通过用户面获取接入网关连接的第二终端设备的标识信息，其具体过程参见下文对图7所示的流程示意图的详细描述。
S503，第一数据管理网元根据标识信息从第二网络中第二终端设备对应的第二数据管理网元获取第二终端设备的接入参数。
具体地，在第一网络中的第一数据管理网元获取到接入网关连接的第二终端设备的标识信息之后，第一网络中的第一数据管理网元即可以根据标识信息从第二数据管理网元获取第二终端设备的接入参数。
在一个例子中，在第一数据管理网元根据标识信息从第二数据管理网元获取第二终端设备的接入参数之前，第一数据管理网元需要确定第二网络中第二终端设备对应的第二数据管理网元，其具体过程参见下文对图8所示的流程示意图的详细描述。
接下来，详细说明第一数据管理网元如何根据第二终端设备的标识信息从第二网络中第二终端设备对应的第二数据管理网元获取第二终端设备的接入参数。
在一个实施例中，首先，第一数据管理网元发送接入参数请求消息至第二数据管理网元。该接入参数请求消息至少包括第二终端设备的标识信息，可以由第二数据管理网元本地配置。然后，第二数据管理网元根据第二终端设备的标识信息查找第二终端设备的设备信息。示例性的，设备信息可以为设备支持的业务类型信息，如IP类型业务，Ethernet类型业务，或非结构化类型业务、业务带宽需求和/或鉴权认证参数中的至少一个。最后，第二数据管理网元发送接入参数响应消息至第一数据管理网元。该接入参数响应消息包括第二终端设备的标识信息和接入参数，该接入参数包括设备信息。至此，第一数据管理网元获取到第二终端设备的接入参数。
需要说明的是，针对非首次接入第一网络的第二终端设备，第二数据管理网元中还存储有第二终端设备的永久标识。因此，针对非首次接入第一网络的第二终端设备， 第二数据管理网元根据标识信息查找到的第二终端设备的设备信息还包括第二终端设备的永久标识。
S504，第一数据管理网元根据接入参数，获取第二终端设备的签约数据。
在一个实施例中，由于第二终端设备为首次接入第一网络，因此，第一数据管理网元会根据获取到的接入参数响应消息中的第二终端设备的标识信息和/或接入参数，分配第二终端设备的永久标识。并且在注册流程，第一数据管理网元根据在S503中获取到的接入参数，生成第二终端设备的签约数据。
需要说明的是，针对非首次接入第一网络的第二终端设备，第一数据管理网元中存储有非首次接入第一网络的第二终端设备的签约数据。因此，第一数据管理网元根据第二数据管理网元发送的第二终端设备的永久标识查找非首次接入第一网络的第二终端设备的签约数据。
S505，第一数据管理网元向接入网关发送第二终端设备的签约数据。
具体地，在第一数据管理网元获取到签约数据之后，第一数据管理网元即可以向接入网关发送第二终端设备的签约数据。上述签约数据包括：终端设备的永久标识以及PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。
作为一种可能的实现方式，该签约数据可以由第一数据管理网元在接入网关和第一网络进行注册时，发送至第二终端设备。
示例性的，第一数据管理网元将第二终端设备的签约数据发送至AMF网元。AMF网元将第二终端设备的签约数据转发给接入网关。至此，接入网关获取到第二终端设备的签约数据，完成接入网关到第一网络的注册流程。实现了第一数据管理网元通过第一网络的控制面将第二终端设备的签约数据发送至接入网关。
作为另一种可能的实现方式，第一数据管理网元可以通过第一PDU会话的用户面向接入网关发送第二终端设备的签约数据，比如发送签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。
示例性的，在S504中，第一数据管理网元获取到第二终端设备的签约数据后，只向AMF网元发送签约数据中的第二终端设备的永久标识，不发送签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的任意一个。AMF网元向接入网关发送第二终端设备的永久标识。可以理解的是，接入网关可以根据第二终端设备的永久标识，确定第二终端设备。接下来，接入网关建立第一PDU会话，该第一PDU会话用于传输第二终端设备的签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。接入网关通过第一PDU会话的用户面将第一请求消息发送至UPF网元。该第一请求消息用于请求签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。UPF网元将第一请求消息转发给SMF网元。SMF网元将第一请求消息转发给第一数据管理网元。第一数据管理网元将签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个发送至SMF网元。SMF网元再将其转发给UPF网元。UPF网元再通过第一PDU会话的用户面将其转发给接入网关。至此，接入网关获取到签约数据。实现了第一数据管理网元通过第一网络的用户面将第二终端设备的签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个发送至接入网关。
作为又一种可能的实现方式，第一数据管理网元可以通过PDU会话的用户面向接 入网关发送第二终端设备的签约数据。
示例性的，第一数据管理网元将第二终端设备的签约数据发送至SMF网元。SMF网元将第二终端设备的签约数据转发给UPF网元。UPF网元通过PDU会话的用户面将第二终端设备的签约数据转发给接入网关。至此，接入网关获取到第二终端设备的签约数据。实现了第一数据管理网元通过第一网络的用户面将第二终端设备的签约数据发送至接入网关。
S506，接入网关根据签约数据接入第一网络。
具体地，在接入网关获取到第二终端设备的签约数据之后，即可以根据获取到的第二终端设备的签约数据接入第一网络。
作为一种可能的实现方式，接入网关可以将获取到的签约数据进行本地存储。并且接入网关可以基于签约数据建立第二PDU会话。该第二PDU会话用于传输与第二终端设备相关的业务数据，也即接入网关为不同的第二终端设备建立不同的第二PDU会话。第一网络同样建立第二PDU会话。若第二PDU会话是IP类型的PDU会话，第一网络为该PDU会话分配UE IP地址。接入网关收到UE IP地址后，将其发送给第二终端设备。第二终端设备使用上述UE IP地址封装业务数据包，并将封装后的业务数据包发送至第一网络。
需要说明的是，后续第二终端设备再次与接入网关建立连接后，接入网关可以基于第二终端设备的标识信息查找第二终端设备的签约数据。接着，接入网关即可以基于其查找到的签约数据发起到第一网络的注册流程。
在本申请实施例提供的方案中，接入网关可以代理第二终端设备接入第一网络。第一网络中的第一数据管理网元可以将第二终端设备的签约数据通过控制面或用户面传递给接入网关。从而实现了第二终端设备可以接入第一网络；或者接入网关首先直接注册到(或称为接入)第一网络。然后，第一数据管理网元通过建立的PDU会话传输第二终端设备的签约数据给接入网关。从而实现了第二终端设备可以接入第一网络，由此解决了目前无法通过TWIF统一代理non 5GC终端设备接入5GC的问题，实现了non 5GC终端设备通过接入网关接入5GC。
接下来，对第一数据管理网元通过控制面获取接入网关连接的第二终端设备的标识信息的具体过程进行详细介绍。参阅图6所示的流程示意图，该流程示意图包括：
S601，接入网关向第一网络中的AMF网元发送注册请求消息。
在一个实施例中，接入网关确定第二终端设备为首次接入第一网络之后，向第一网络中控制面中的AMF网元发送注册请求消息，该注册请求消息可以包括第二终端设备的标识信息以及第一指示信息和/或第二指示信息。上述第一指示信息用于指示第二终端设备为首次接入第一网络。示例性的，第一指示信息可以具体为首次接入指示和/或签约数据请求指示。首次接入指示用以表示第二终端设备第一次与第一网络建立连接，需要请求第二终端设备的签约数据，或者表示接入网关没有第二终端设备的签约数据，例如，可能因为接入网关故障恢复，丢失了原来的签约数据，需要请求第二终端设备的签约数据。签约数据请求指示用以表示接入网关没有第二终端设备的签约数据，需要请求第二终端设备的签约数据。由于针对不支持SIM卡的终端设备，是无法进行鉴权认证的。因此，针对本申请中的第二终端设备，上述第二指示信息用于指示 跳过对第二终端设备进行鉴权认证。示例性的，第二指示信息可以具体为省略鉴权认证指示。
S602，AMF网元确定第二终端设备为首次接入第一网络。
在一个实施例中，AMF网元接收到注册请求消息后，根据注册请求消息中的第一指示信息，确定第二终端设备为首次接入第一网络，需要请求第二终端设备的签约数据。
S603，AMF网元发送签约数据请求消息至第一数据管理网元。
在一个实施例中，AMF网元向第一数据管理网元发送的签约数据请求消息中至少包括第二终端设备的标识信息。
S604，第一数据管理网元获取第二终端设备的标识信息。
具体地，第一数据管理网元接收AMF网元发送的签约数据请求消息。至此，第一数据管理网元获取到第二终端设备的标识信息。
可选地，如图6所示的流程示意图中的S601-S604还可以替换成如图7所示的流程示意图中的S701-S704。实现了第一数据管理网元通过用户面获取接入网关连接的第二终端设备的标识信息。其具体实现过程如下：
S701，接入网关生成签约数据请求消息。
在一个实施例中，接入网关确定第二终端设备为首次接入第一网络后，针对首次接入第一网络的第二终端设备，接入网关生成签约数据请求消息。该签约数据请求消息至少包括第二终端设备的标识信息。
S702，接入网关将签约数据请求消息发送至UPF网元。
在一个实施例中，接入网关将签约数据请求消息通过S401中建立的PDU会话的用户面发送至第一网络中的UPF网元。
S703，UPF网元将签约数据请求消息发送至SMF网元。
在一个实施例中，第一网络中的UPF网元将签约数据请求消息发送至第一网络中的SMF网元。
S704，SMF网元将签约数据请求消息发送至第一数据管理网元。
在一个实施例中，第一网络中的SMF网元将签约数据请求消息发送给第一数据管理网元。至此，第一数据管理网元获取到签约数据请求消息中包含的第二终端设备的标识信息。
接下来，对第一数据管理网元确定第二网络中第二终端设备对应的第二数据管理网元的具体过程进行详细介绍。参阅图8所示的流程示意图，该流程示意图包括：
S801，第一数据管理网元根据第一指示信息，确定第二终端设备为首次接入第一网络。
在一个实施例中，AMF网元确定第二终端设备为首次接入第一网络后，向第一数据管理网元发送的签约数据请求消息中还可以包括第一指示信息和/或第二指示信息。第一数据管理网元根据第一指示信息，确定第二终端设备为首次接入第一网络。
S802，AMF网元向第一数据管理网元发送第二终端设备的位置信息。
在一个实施例中，AMF网元向第一数据管理网元发送签约数据请求消息之外，还可以向第一数据管理网元发送第二终端设备的位置信息。该位置信息可以为第二终端 设备的接入点的第一标识信息、第二终端设备的物理位置信息和/或第二网络的第二标识信息。
可选地，第二终端设备的位置信息可以包含在签约数据请求消息中，由AMF网元发送至第一数据管理网元。
S803，第一数据管理网元根据第二终端设备的位置信息和/或第二终端设备的标识信息，确定第二终端设备对应的第二数据管理网元。
在一个实施例中，由于第二终端设备为首次接入第一网络，因此，第一数据管理网元获取到第二终端设备的位置信息后，根据该位置信息，确定第二终端设备对应的第二数据管理网元。和/或，第一数据管理网元基于签约数据请求消息中第二终端设备的标识信息包含的第二终端设备的服务提供商信息确定第二数据管理网元。
上述S801-S803实现了通过控制面，向第一数据管理网元发送第二终端设备的位置信息。
可选地，在一个例子中，第一数据管理网元确定第二网络中第二终端设备对应的第二数据管理网元的具体过程，即图8中所描述的内容也可以替换为图9所描述的内容。具体地，如图9所示，可以包括以下步骤：S901-S904。实现了接入网关通过用户面，向第一数据管理网元发送第二终端设备的位置信息。其具体实现过程如下：
S901，接入网关将第二终端设备的位置信息发送至UPF网元。
在一个实施例中，接入网关将签约数据请求消息通过S501中建立的PDU会话的用户面发送至第一网络中的UPF网元之外，还可以通过S501中建立的PDU会话的用户面将第二终端设备的位置信息发送至UPF网元。
可选地，第二终端设备的位置信息还可以包括在签约数据请求消息内，通过S501中建立的PDU会话的用户面发送至UPF网元。
S902，UPF网元将第二终端设备的位置信息发送至SMF网元。
在一个实施例中，第一网络中的UPF网元将获取到的第二终端设备的位置信息转发给SMF网元。
S903，SMF网元将第二终端设备的位置信息发送至第一数据管理网元。
在一个实施例中，SMF网元将获取到的第二终端设备的位置信息转发给第一数据管理网元。
S904，第一数据管理网元根据第二终端设备的位置信息和/或第二终端设备的标识信息，确定第二终端设备对应的第二数据管理网元。
在一个实施例中，第一数据管理网元根据第二终端设备的位置信息，确定第二数据管理网元。和/或，第一数据管理网元基于签约数据请求消息中第二终端设备的标识信息包含的第二终端设备的服务提供商信息确定第二数据管理网元。
接下来，在更具体的实施例中，对本申请实施例提供的方案进行举例介绍。
在下述实施例中，第一数据管理网元为UDM网元，接入网关为园区网关，第二数据管理网元为园区AAA服务器，第一网络为5GC，第二网络为第二终端设备和园区网关所在的网络。
实施例1
在本实施例中，支持第二终端设备作为UE接入5GC，由园区网关作为第二终端设 备的代理。5GC完成第二终端设备的接入注册流程，并通过控制面发送第二终端设备接入5GC所需的签约数据给园区网关。
参阅图10，本实施例涉及如下流程。
S1001，第二终端设备与园区网关建立连接。
需要说明的是，第二终端设备与园区网关之间可以通过有线网络或无线网络等网络建立连接。示例性的，无线网络可以为短距离无线通信技术，如蓝牙。本实施例不对建立连接的方案做具体限制。
S1002，园区网关获取第二终端设备的标识信息。
在本实施例中，园区网关与第二终端设备建立连接后，获取第二终端设备的标识信息，该标识信息可以为MAC地址和/或设备标识等。可选的，上述第二终端设备的标识信息中包含第二终端设备的服务提供商信息。
S1003，园区网关根据标识信息确定第二终端设备为首次接入5GC。
在本实施例中，由于对于非首次接入第一网络的第二终端设备，园区网关本地是存储有第二终端设备的签约数据的。因此，若园区网关根据标识信息没有查找到第二终端设备的签约数据，则确定第二终端设备为首次接入5GC。
S1004，园区网关生成注册请求消息发送给AMF网元。
在本实施例中，园区网关代理第二终端设备生产注册请求消息发送给AMF网元。需要说明的是，上述注册请求消息可以包括第二终端设备的标识信息以及第一指示信息和/或第二指示信息。关于第一指示信息和第二指示信息的描述详见针对S701的描述，在此不再赘述。
S1005，AMF网元根据第一指示信息确定第二终端设备为首次接入5GC。
在本实施例中，AMF网元根据第一指示信息中的首次接入指示和/或签约数据请求指示确定第二终端设备为首次接入5GC。关于首次接入指示和签约数据请求指示的描述详见针对S701的描述，在此不再赘述。
S1006，AMF网元发送签约数据请求消息至UDM网元。
在本实施例中，AMF网元发送签约数据请求消息至UDM网元，以获取第二终端设备接入5GC所需的签约数据。示例性的，上述签约数据请求消息可以包括第二终端设备的标识信息、第一指示信息、第二指示信息以及第二终端设备的位置信息。
S1007，UDM网元根据第一指示信息确定第二终端设备为首次接入5GC。
在本实施例中，UDM网元获取到签约数据请求消息中的第一指示信息后，根据其中的首次接入指示和/或签约数据请求指示确定第二终端设备为首次接入5GC。
S1008，UDM网元根据第二终端设备的位置信息和/或第二终端设备的标识信息，确定第二终端设备对应的园区AAA服务器。
在本实施例中，第二终端设备与园区AAA服务器存在对应关系。UDM网元获取到签约数据请求消息中的第二终端设备的位置信息后，根据该位置信息可以确定第二终端设备对应的园区AAA服务器。和/或，UDM网元获取到第二终端设备的标识信息后，根据该标识信息包含的第二终端设备的服务提供商信息确定第二终端设备对应的园区AAA服务器。
S1009，UDM网元发送接入参数请求消息至园区AAA服务器。
在本实施例中，接入参数存储在园区AAA服务器中。UDM网元向园区AAA服务器发送接入参数请求消息，以获取接入参数。上述接入参数请求消息至少包括第二终端设备的标识信息。
S1010，园区AAA服务器根据第二终端设备的标识信息查找第二终端设备的设备信息。
在本实施例中，园区AAA服务器获取到接入参数请求消息中的第二终端设备的标识信息后，根据该标识信息查找第二终端设备的设备信息。示例性的，上述设备信息可以为第二终端设备支持的业务类型信息，如IP类型业务，Ethernet类型业务，或非结构化类型业务、业务带宽需求和/或鉴权认证参数中的至少一个。
S1011，园区AAA服务器发送接入参数响应消息至UDM网元。
在本实施例中，园区AAA服务器查找到第二终端设备的设备信息后，向UDM网元发送响应于接入参数请求消息的接入参数响应消息。上述接入参数响应消息包括第二终端设备的标识信息和接入参数，该接入参数包括设备信息。
S1012，UDM网元为首次接入5GC的第二终端设备分配永久标识。
在本实施例中，首次接入5GC的第二终端设备是没有永久标识的。因此，UDM网元为首次接入5GC的第二终端设备分配永久标识。
S1013，UDM网元根据接入参数生成第二终端设备的签约数据。
在本实施例中，第二终端设备接入5GC需要签约数据。因此，UDM网元会根据接入参数生成第二终端设备接入5GC所需的签约数据。上述签约数据包括：第二终端设备的永久标识以及PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。
S1014，UDM网元回复园区AAA服务器确认消息。
在本实施例中，UDM网元回复园区AAA服务器确认消息。上述确认消息包括：第二终端设备的标识信息和永久标识。此后，园区AAA服务器便知晓第二终端设备在5GC中的名称，即第二终端设备的永久标识。
S1015，UDM网元将第二终端设备的签约数据发送至AMF网元。
在本实施例中，第二终端设备的签约数据是通过控制面发送给园区网关的。因此，本步骤中，UDM网元先将第二终端设备的签约数据发送至AMF网元。
S1016，AMF网元将第二终端设备的签约数据转发给园区网关。
在本实施例中，AMF网元将第二终端设备的签约数据转发给园区网关。至此，完成了第二终端设备的签约数据通过控制面发送给园区网关。
此外，AMF网元还会为第二终端设备分配临时标识。该临时标识携带有AMF网元标识。当园区网关与5GC断开连接，又恢复后可以根据AMF网元标识找到之前使用的AMF网元。
S1017，UDM网元将第二指示信息发送至AUSF网元。
由于针对不支持SIM卡的终端设备，是无法进行鉴权认证的。因此，在本实施例中，UDM网元将第二指示信息，如省略鉴权认证指示发送至AUSF网元，以便使得AUSF网元跳过对本实施例中不支持SIM卡、不支持NAS功能且不是5GC的签约用户的第二终端设备进行鉴权认证。
S1018，AUSF网元跳过对第二终端设备进行鉴权认证。
在本实施例中，AUSF网元根据获取到的第二指示信息，跳过对第二终端设备进行鉴权认证。
S1019，园区网关保存签约数据。
在本实施例中，园区网关获取到签约数据后，将其保存至本地。
S1020，园区网关根据签约数据向5GC发送第二PDU会话建立请求消息。
在本实施例中，为传输第二终端设备相关的业务数据，园区网关需要为不同的第二终端设备建立不同的第二PDU会话，为其提供业务服务。因此，园区网关根据签约数据向5GC发送第二PDU会话建立请求消息。
S1021，5GC建立SMF网元与UPF网元之间的报文转发控制协议(paeket forwarding control protocol，PFCP)会话。
在本实施例中，为建立第二PDU会话，5GC需要建立PFCP会话。
S1022，5GC向园区网关发送第二PDU会话响应消息。
在本实施例中，响应于第二PDU会话请求消息，5GC向园区网关发送第二PDU会话响应消息。至此，第二PDU会话建立成功。
S1023，5GC向园区网关发送为第二终端设备分配的UE IP地址。
在本实施例中，5GC向园区网关发送为第二终端设备分配的UE IP地址。
S1024，园区网关将上述UE IP地址发送至第二终端设备。
在本实施例中，园区网关将UE IP地址转发给第二终端设备，以用于封装业务数据包。
本实施例实现了园区网关代理第二终端设备接入5GC。5GC通过控制面发送第二终端设备接入5GC所需的签约数据给园区网关。
实施例2
在本实施例中，支持第二终端设备作为UE接入5GC，由园区网关作为第二终端设备的代理。5GC完成第二终端设备的接入注册流程，不同于实施例1，实施例2是通过用户面发送第二终端设备接入5GC所需的签约数据给园区网关。
参阅图11，本实施例涉及如下流程。
S1101-S1114具体实现过程同实施例1中的S1001-S1014具体实现过程，在此不再赘述。
S1115，UDM网元将第二终端设备的签约数据中的永久标识发送至AMF网元。
在实施例1中，UDM网元将签约数据包括的所有内容全部发送至AMF网元。本实施例不同于实施例1，本实施例中的UDM网元将签约数据中的永久标识发送至AMF网元，而不发送签约数据中的第一信息，上述第一信息包括：PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个。
S1116，AMF网元向园区网关发送永久标识。
在本实施例中，AMF网元获取到签约数据中的永久标识后，将其转发给园区网关。
S1117，园区网关建立第一PDU会话。
在本实施例中，园区网关建立第一PDU会话，以用于传输第二终端设备的签约数据中的第一信息。
S1118，园区网关通过第一PDU会话的用户面将第一请求消息发送至UPF网元。
在本实施例中，园区网关将第一请求消息通过第一PDU会话的用户面发送至UPF网元，以用于请求签约数据中的第一信息。
S1119，UPF网元将第一请求消息转发给SMF网元。
在本实施例中，UPF网元将获取到的第一请求消息转发给SMF网元。
S1120，SMF网元将第一请求消息转发给UDM网元。
在本实施例中，SMF网元将获取到的第一请求消息转发给UDM网元。
S1121，UDM网元将签约数据中的第一信息发送至SMF网元。
在本实施例中，UDM网元将获取到的签约数据中的第一信息，即PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个发送至SMF网元。
S1122，SMF网元将第一信息转发给UPF网元。
在本实施例中，SMF网元将获取到的第一信息转发给UPF网元。
S1123，UPF网元通过第一PDU会话的用户面将第一信息转发给园区网关。
在本实施例中，UPF网元通过第一PDU会话的用户面将第一信息转发给园区网关。至此，园区网关获取到签约数据中的所有内容。
S1124-S1131具体实现过程同实施例1中的S1017-S1024具体实现过程，在此不再赘述。
本实施例实现了签约数据中的PDU会话类型、切片类型、QoS参数和/或DNN中的至少一个通过用户面传递给园区网关。当签约数据中包含的参数较多，不便于通过实施例1中的控制面方案传输时，可以采用实施例2的用户面传输方案。
实施例3
在本实施例中，园区网关作为UE接入5GC。并且5GC通过PDU会话的用户面发送第二终端设备接入5GC所需的签约数据给园区网关。
参阅图12，本实施例涉及如下流程。
S1201，园区网关作为终端设备接入5GC。
也就是说，在本实施例中，园区网关作为终端设备发起5GC的注册流程。
S1202，园区网关作为终端设备建立PDU会话。
在本实施例中，园区网关接入5GC后，作为终端设备建立PDU会话，以用于传输第二终端设备的签约数据。
S1203，园区网关与第二终端设备建立连接。
本步骤同实施例1中的S1001，在此不再赘述。
S1204-S1205具体实现过程同实施例1中的S1002-S1003具体实现过程，在此不再赘述。
S1206，园区网关发送签约数据请求消息至5GC的UPF网元。
在本实施例中，园区网关通过PDU会话的用户面发送签约数据请求消息至5GC的UPF网元，以用于请求签约数据。上述签约数据请求消息包括第二终端设备的标识信息、第一指示信息和第二终端设备的位置信息。
S1207，UPF网元转发签约数据请求消息至SMF网元。
在本实施例中，UPF网元将获取的签约数据请求消息转发给SMF网元。
S1208，SMF网元将签约数据请求消息转发给UDM网元。
在本实施例中，SMF网元将获取的签约数据请求消息转发给UDM网元。
S1209，UDM网元根据第一指示信息确定第二终端设备为首次接入5GC。
在本实施例中，UDM网元根据第一指示信息中的首次接入指示和/或签约数据请求指示，确定第二终端设备为首次接入5GC。
S1210，UDM网元根据第二终端设备的位置信息和/或第二终端设备的标识信息，确定第二终端设备对应的园区AAA服务器。
在本实施例中，UDM网元根据获取的签约数据请求消息中的第二终端设备的位置信息，确定第二终端设备对应的园区AAA服务器。和/或，UDM网元根据第二终端设备的标识信息包含的服务提供商信息，确定第二终端设备对应的园区AAA服务器。
S1211-S1215具体实现过程同实施例1中的S1009-S1013具体实现过程，在此不再赘述。
S1216，UDM网元将签约数据发送至SMF网元。
在本实施例中，UDM网元将生成的签约数据发送至SMF网元。
S1217，SMF网元将签约数据转发给UPF网元。
在本实施例中，SMF网元将获取的签约数据转发给UPF网元。
S1218，UPF网元通过PDU会话的用户面将签约数据转发给园区网关。
在本实施例中，UPF网元将签约数据通过PDU会话的用户面转发给园区网关。至此，园区网关获取到签约数据的所有内容。
S1219-S1226具体实现过程同实施例1中的S1017-S1024具体实现过程，在此不再赘述。
本实施例实现了园区网关作为独立的UE注册到5GC。5GC的UPF网元通过PDU会话的用户面发送第二终端设备接入5GC所需的签约数据给园区网关。
为了实现上述本申请实施例提供的方法中的各功能，第一数据管理网元、接入网关均可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
基于与上述方法实施例相同构思，本申请提供了一种通信装置1300。图13为本申请实施例提供的一种通信装置1300的结构示意图，该装置用于实现上述方法实施例中描述的方法。该通信装置可以是第一数据管理网元中的装置或能够与第一数据管理网元匹配使用的装置。一种可能的实现中，该通信装置可以包括执行上述方法实施例中第一数据管理网元执行的方法/操作/步骤/动作所一一对应的模块或单元，该单元可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种可能的实现中，该装置包括：第一获取单元1301和第一发送单元1302；
第一获取单元1301用于获取第二网络中接入网关连接的第二终端设备的标识信息；
第一获取单元1301还用于根据标识信息从第二网络中第二终端设备对应的第二数据管理网元获取第二终端设备的接入参数；
第一获取单元1301还用于根据接入参数，获取第二终端设备的签约数据；
第一发送单元1302用于向接入网关发送第二终端设备的签约数据。
在一种可能的实现中，第一获取单元1301还用于获取第一指示信息，该第一指示信息用于指示第二终端设备为首次接入所述第一网络。
在一种可能的实现中，第一获取单元1301还用于获取第二指示信息，该第二指示信息用于指示跳过对第二终端设备进行鉴权认证；
第一发送单元1302还用于向AUSF网元发送第二指示信息。
在一种可能的实现中，第一获取单元1301还用于根据所述接入参数和/或所述第二终端设备的标识信息，获取第二终端设备的永久标识。
在一种可能的实现中，所述终端设备不支持SIM卡且不支持NAS功能。
在一种可能的实现中，上述装置1300还包括第一确定单元1303；
第一获取单元1301还用于获取第二终端设备的位置信息；
第一确定单元1303用于根据位置信息，确定第二数据管理网元。
在一种可能的实现中，第一获取单元1301具体用于：在注册流程，根据接入参数，生成第二终端设备的签约数据。
在一种可能的实现中，第一发送单元1302具体用于：
通过协议数据单元PDU会话的用户面，向接入网关发送第二终端设备的签约数据，该PDU会话用于传输签约数据；或
在注册流程，向接入网关发送第二终端设备的签约数据。
在一种可能的实现中，第一发送单元1302具体用于：
通过协议数据单元PDU会话的用户面，第一数据管理网元将签约数据发送给SMF网元，以使得SMF网元通过第一DNN对应的PDU会话向接入网关传输签约数据，第一DNN用于指示PDU会话用于传输签约数据。
图14为本申请实施例提供的一种通信装置1400的结构示意图，该装置用于实现上述方法实施例中描述的方法。该通信装置可以是接入网关中的装置或能够与接入网关匹配使用的装置。一种可能的实现中，该通信装置可以包括执行上述方法实施例中接入网关执行的方法/操作/步骤/动作所一一对应的模块或单元，该单元可以是硬件电路，也可是软件，也可以是硬件电路结合软件实现。一种可能的实现中，该结构示意图装置包括：第一连接单元1401、第二获取单元1402和第一接入单元1403；
第一连接单元1401用于与第二网络中的第二终端设备建立连接；
第二获取单元1402用于从第一网络获取第二终端设备的签约数据；
第一接入单元1403用于根据签约数据接入第一网络。
一种可能的实现中，上述装置1400还包括：第二确定单元1404；
第二确定单元1404用于确定本地没有第二终端设备的签约数据。
一种可能的实现中，第二确定单元1404还用于根据第二终端设备的标识信息，确定第二终端设备为首次接入第一网络。
一种可能的实现中，上述装置1400还包括：第二发送单元1405；
第二发送单元1405用于向第一网络发送注册请求消息，该注册请求消息包括第一指示信息和/或第二指示信息，第一指示信息用于指示第二终端设备首次接入第一网络，第二指示信息用于指示跳过对第二终端设备进行鉴权认证。
一种可能的实现中，第二获取单元1402具体用于：
在注册流程，接入网关从第一网络获取第二终端设备的签约数据。
一种可能的实现中，上述装置1400还包括：建立单元1406；
建立单元1406用于建立用于传输签约数据的PDU会话；
第二获取单元1402还用于通过PDU会话的用户面，从第一网络获取第二终端设备的签约数据。
一种可能的实现中，第二获取单元1402还用于在注册流程，从第一网络获取第二终端设备的永久标识；
第二确定单元1404还用于根据永久标识，确定第二终端设备。
参见图15，本申请实施例还提供了一种通信装置1500，用于实现上述方法中第一数据管理网元或接入网关的功能。该通信装置1500可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。通信装置1500包括至少一个处理器1510，用于实现本申请实施例提供的方法中第一数据管理网元、接入网关的功能。通信装置1500还可以包括通信接口1520。在本申请实施例中，通信接口1520可以是收发器、电路、总线、模块或其它类型的通信接口，用于通过传输介质和其它设备进行通信。
处理器1510可以执行通信装置1300中第一获取单元1301所执行的功能以及通信装置1400中第二获取单元1402所执行的功能；通信接口1520可以用于执行通信装置1300中第一发送单元1302所执行的功能以及通信装置1400中第一连接单元1401和第一接入单元1403所执行的功能。
当通信装置1500用于执行第一数据管理网元所执行的操作时，处理器1510用于获取第二网络中接入网关连接的第二终端设备的标识信息；根据标识信息从第二网络中第二终端设备对应的第二数据管理网元获取第二终端设备的接入参数；根据接入参数，获取第二终端设备的签约数据；通信接口1520用于向接入网关发送第二终端设备的签约数据。
当通信装置1500用于执行接入网关所执行的操作时，通信接口1520，用于与第二网络中的第二终端设备建立连接；处理器1510用于从第一网络获取第二终端设备的签约数据；通信接口1520还用于根据签约数据接入第一网络。
通信接口1520还用于执行上述方法实施例中第一数据管理网元或者接入网关的方法所涉及的其它接收或发送的步骤或操作。处理器1510还可以用于执行上述方法实施例中除收发之外的其它对应的步骤或操作，在此不再一一赘述。
通信装置1500还可以包括至少一个存储器1530，用于存储程序指令和/或数据。存储器1530和处理器1510耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1520可能和存储器1530协同操作。处理器1510可能执行存储器1530中存储的程序指令。在一种可能的实现中，所述至少一个存储器中的至少一个可以与处理器集成在一起。在另一种可能的实现中，存储器1530位于通信装置1500之外。
本申请实施例中不限定通信接口1520、处理器1510以及存储器1530之间的具体连接介质。本申请实施例在图15中以存储器1530、处理器1510以及通信接口1520 之间通过总线1540连接，总线在图15中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图15中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
示例性的，处理器1510可以是一个或多个中央处理器(Central Processing Unit，CPU)，在处理器1510是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。处理器1510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申请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。结合本申请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。
示例性的，存储器1530可包括但不限于硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等非易失性存储器，随机存储记忆体(Random Access Memory，RAM)、可擦除可编程只读存储器(Erasable Programmable ROM，EPROM)、只读存储器(Read-Only Memory，ROM)或便携式只读存储器(Compact Disc Read-Only Memory，CD-ROM)等等。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
基于与上述方法实施例相同构思，本申请实施例提供了一种计算机可读存储介质，上述计算机可读存储介质上存储有计算机程序，上述计算机程序被处理器执行时，如图5-12对应的通信方法的部分或全部步骤被执行。
基于与上述方法实施例相同构思，本申请实施例还提供了一种包括指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如图5-12对应的通信方法的部分或全部步骤。
本申请实施例还提供一种通信系统1600，包括第一数据管理网元1601，用于执行上述方法实施例中第一数据管理网元执行的各个步骤；
鉴权服务功能AUSF网元1602，用于与第一数据管理网元进行通信；以及
会话管理功能SMF网元1603，用于与第一数据管理网元进行通信。
应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (20)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一网络中第一数据管理网元获取第二网络中接入网关连接的终端设备的标识信息；
    所述第一数据管理网元根据所述标识信息从所述第二网络中所述终端设备对应的第二数据管理网元获取所述终端设备的接入参数；
    所述第一数据管理网元根据所述接入参数，获取所述终端设备的签约数据；
    所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一数据管理网元获取第一指示信息，所述第一指示信息用于指示所述终端设备为首次接入所述第一网络。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一数据管理网元获取第二指示信息，所述第二指示信息用于指示跳过对所述终端设备进行鉴权认证；
    所述第一数据管理网元向鉴权服务功能AUSF网元发送所述第二指示信息。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述第一数据管理网元根据所述接入参数和/或所述终端设备的标识信息，获取所述终端设备的永久标识。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述终端设备不支持客户识别模块SIM卡且不支持非接入层NAS功能。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述方法还包括：
    所述第一数据管理网元获取所述终端设备的位置信息；
    所述第一数据管理网元根据所述位置信息，确定所述第二数据管理网元。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，
    所述第一数据管理网元根据所述接入参数，获取所述终端设备的签约数据，包括：
    在注册流程，所述第一数据管理网元根据所述接入参数，生成所述终端设备的签约数据。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，
    所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据，包括：
    通过协议数据单元PDU会话的用户面，所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据，所述PDU会话用于传输所述签约数据；或
    在所述注册流程，所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据。
  9. 根据权利要求8所述的方法，其特征在于，所述通过协议数据单元PDU会话的用户面，所述第一数据管理网元向所述接入网关发送所述终端设备的所述签约数据，包括：
    通过协议数据单元PDU会话的用户面，所述第一数据管理网元将所述签约数据发送给会话管理功能SMF网元，以使得所述SMF网元通过第一数据网络名称DNN对应的所述PDU会话向所述接入网关传输所述签约数据，所述第一数据网络名称DNN用于指 示所述PDU会话用于传输所述签约数据。
  10. 一种通信方法，其特征在于，所述方法包括：
    第二网络中的接入网关与所述第二网络中的终端设备建立连接；
    所述接入网关从第一网络获取所述终端设备的签约数据；
    所述接入网关根据所述签约数据接入所述第一网络。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    所述接入网关确定本地没有所述终端设备的签约数据。
  12. 根据权利要求10或11所述的方法，其特征在于，所述方法还包括：
    所述接入网关根据所述终端设备的标识信息，确定所述终端设备为首次接入所述第一网络。
  13. 根据权利要求10-12任一项所述的方法，其特征在于，所述方法还包括：
    所述接入网关向所述第一网络发送注册请求消息，所述注册请求消息包括第一指示信息和/或第二指示信息，所述第一指示信息用于指示所述终端设备首次接入所述第一网络，所述第二指示信息用于指示跳过对所述终端设备进行鉴权认证。
  14. 根据权利要求10-13任一项所述的方法，其特征在于，
    所述接入网关从第一网络获取所述终端设备的签约数据，包括：
    在注册流程，所述接入网关从所述第一网络获取所述终端设备的签约数据。
  15. 根据权利要求10-13任一项所述的方法，其特征在于，所述方法还包括：
    所述接入网关建立用于传输所述签约数据的协议数据单元PDU会话；
    所述接入网关从第一网络获取所述终端设备的签约数据，包括：
    通过所述PDU会话的用户面，所述接入网关从所述第一网络获取所述终端设备的签约数据。
  16. 根据权利要求15所述的方法，其特征在于，所述在注册流程，所述接入网关从所述第一网络获取所述终端设备的签约数据，包括：
    在注册流程，所述接入网关从所述第一网络获取所述终端设备的永久标识；
    所述方法还包括：
    所述接入网关根据所述永久标识，确定所述终端设备。
  17. 一种通信装置，其特征在于，包括至少一个处理器，所述处理器用于执行存储器中存储的程序，当所述程序被执行时，使得所述装置执行：
    如权利要求1-9任一项所述的方法；或
    如权利要求10-16任一项所述的方法。
  18. 一种包含指令的计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行：
    如权利要求1-9任一项所述的方法；或
    如权利要求10-16任一项所述的方法。
  19. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时，
    如权利要求1-9任一项所述的方法；或
    如权利要求10-16任一项所述的方法。
  20. 一种通信系统，其特征在于，所述通信系统包括：
    第一数据管理网元，用于执行如权利要求1-9任一项所述的方法；
    以及
    会话管理功能SMF网元，用于与所述第一数据管理网元进行通信。
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