WO2021078287A1 - Nsa网络与sa网络互通的方法、装置及网络管理系统 - Google Patents

Nsa网络与sa网络互通的方法、装置及网络管理系统 Download PDF

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Publication number
WO2021078287A1
WO2021078287A1 PCT/CN2020/123441 CN2020123441W WO2021078287A1 WO 2021078287 A1 WO2021078287 A1 WO 2021078287A1 CN 2020123441 W CN2020123441 W CN 2020123441W WO 2021078287 A1 WO2021078287 A1 WO 2021078287A1
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Prior art keywords
network
nsa
subscription data
signaling
conversion
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PCT/CN2020/123441
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English (en)
French (fr)
Inventor
陈琳
詹徐周
丰孝英
刘俊羿
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中兴通讯股份有限公司
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Publication of WO2021078287A1 publication Critical patent/WO2021078287A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/50—Service provisioning or reconfiguring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support

Definitions

  • the embodiment of the present invention relates to, but not limited to, the technical field of mobile communication networks. Specifically, it relates to, but is not limited to, an NSA (Non-Standalone, non-independent networking) network interoperating with an SA (Standalone, independent networking) network.
  • NSA Non-Standalone, non-independent networking
  • SA Standalone, independent networking
  • Roaming is divided into two modes: LBO (Local BreakOut) and HR (Home-Routed, home route access) according to whether the traffic needs to be detoured to the home.
  • LBO Local BreakOut
  • HR Home-Routed, home route access
  • EPS Evolved Packet System
  • 5G NSA 5G NSA network
  • NR is only an auxiliary node of E-UTRAN base station.
  • the core network is still EPC (Evolved Packet Core), and the visiting place has been upgraded to SA 5GC (5G Core Network, 5G Core Network) network.
  • SA 5GC 5G Core Network, 5G Core Network
  • one of the technical problems solved at least to a certain extent is that in some cases, users roam from the NSA network to After the SA network, because the current 4/5G network elements cannot communicate directly, the visited place can only fall back to 4G for access, and users cannot enjoy 5G high-speed services.
  • an embodiment of the present invention provides a method for interworking between an NSA network and an SA network, which includes: performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, and the signaling conversion includes SA Conversion of network signaling to NSA network signaling, or conversion of NSA network signaling to SA network signaling; forwarding the data message corresponding to the signaling on the user plane.
  • An embodiment of the present invention also provides a device for interworking between an NSA network and an SA network.
  • the device includes a first network element; the first network element is set to perform on the control plane according to the NSA network-SA network subscription data mapping table.
  • Signaling conversion the signaling conversion includes the conversion of SA network signaling to NSA network signaling, or the conversion of NSA network signaling to SA network signaling; the data message corresponding to the signaling is forwarded on the user plane.
  • the embodiment of the present invention also provides a network management system.
  • the network management system includes the device for interworking between the NSA network and the SA network as described above, and the device is deployed at the location of an international gateway office.
  • Figure 1 is a schematic diagram of LBO roaming interoperability in some situations
  • Figure 2 is a schematic diagram of HR roaming interoperability in some situations
  • Figure 3 is a schematic diagram of a network architecture in which NSA users roam to the SA network in some situations;
  • FIG. 4 is a schematic diagram of the basic flow of a method for intercommunication between an NSA network and an SA network according to Embodiment 1 of the present invention
  • FIG. 5 is a schematic diagram of a basic flow chart of generating an NSA network-SA network subscription data mapping table provided by Embodiment 1 of the present invention
  • FIG. 6 is a first structural diagram of a device for intercommunication between an NSA network and an SA network provided by the second embodiment of the present invention.
  • FIG. 7 is a second structural diagram of a device for intercommunication between an NSA network and an SA network provided by the second embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a first network element provided by Embodiment 2 of the present invention.
  • Embodiment 9 is a schematic structural diagram of a network management system provided by Embodiment 3 of the present invention.
  • Embodiment 10 is a schematic diagram of a network architecture provided by Embodiment 3 of the present invention for NSA users roaming to access under the SA network;
  • FIG. 11 is a schematic diagram of the basic flow of the UE registering under the SA network and initiating basic session establishment according to the fourth embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a basic process of initiating an update on the network side according to Embodiment 5 of the present invention.
  • FIG. 13 is a schematic diagram of a basic flow chart of a session modification initiated by a UE according to Embodiment 6 of the present invention.
  • FIG. 14 is a schematic diagram of a basic flow chart of a session release initiated by a UE according to Embodiment 7 of the present invention.
  • FIG. 15 is a schematic diagram of a basic flow chart for initiating session release on the network side according to Embodiment 8 of the present invention.
  • Roaming is divided into two modes: LBO (Local BreakOut) and HR (Home-Routed, home route access) according to whether the traffic needs to be detoured to the home.
  • LBO Local BreakOut
  • HR Home-Routed, home route access
  • FIG. 1 is a schematic diagram of LBO roaming interoperability.
  • a UE User Equipment
  • hPLMN home Public Land Mobile Network, home public land mobile network
  • vPLMN visitor Public Land Mobile Network, visited public land mobile network
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • SGW-U Serving Gateway User Plane
  • PGW Packet Data Network Gateway
  • the PGW includes PGW-C (PDN GateWay, PDN gateway control plane function) and PGW-U (PDN GateWay, PDN) Gateway user plane function); if it is 5G access, from AMF (Access and Mobility Management function, access and mobility management function entity) to SMF (Session Management function, session management function entity) and PGW- C. Finally, directly access the Internet through the UPF (User plane function, user plane function entity) and PGW-U of the visited place.
  • the relevant policies are determined by the visited Policy Control Function (PCF) and the home Policy Control Function (PCF).
  • PCF visited Policy Control Function
  • PCF home Policy Control Function
  • FIG. 2 is a schematic diagram of HR roaming interoperability.
  • the UE roams from h PLMN to vPLMN network, if 4G access, it will be routed from the MME in the visited area to the SGW (SGW-C, SGW-U) in the visited area and to the home area.
  • PGW PGW (PGW-C, PGW-U), access the Internet from the home location. If it is 5G access, select the SMF of the visited place and the SMF of the home place from the AMF of the visited place, and finally access the Internet through the UPF of the home place.
  • EPS Evolved Packet System
  • 5G NSA 5G NSA network
  • NR is only an auxiliary node of E-UTRAN base station.
  • the core network is still EPC (Evolved Packet Core), and the visiting place has been upgraded to SA 5GC (5G Core Network, 5G Core Network) network.
  • SA 5GC 5G Core Network, 5G Core Network
  • the present invention provides a method for interworking between the NSA network and the SA network.
  • the signaling conversion is performed on the control plane according to the NSA network-SA network subscription data mapping table.
  • the signaling conversion includes the conversion from SA network signaling to NSA network signaling.
  • Figure 4 is the NSA network and SA network provided by this embodiment Schematic diagram of the basic flow of the intercommunication method.
  • S401 Perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table.
  • the signaling conversion includes conversion from SA network signaling to NSA network signaling, or conversion from NSA network signaling to SA network signaling.
  • S502 Generate an NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group.
  • the acquisition of NSA network subscription data and 4G authentication vector parameter set in the embodiment of the present invention may include:
  • HLR Home Subscriber Server
  • HSS Home Location Register
  • the NSA network-SA network subscription data mapping table is generated, including:
  • the 4G authentication vector parameter group is used to transform the NSA network subscription data to generate SA network subscription data, and the NSA network-SA network subscription data mapping table is generated according to the NSA network subscription data and the SA network subscription data.
  • the NSA network-SA network subscription data mapping table generated in the embodiment of the present invention may include mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data.
  • Tables 1 to 4 respectively NSA network-SA network mobility management subscription data mapping table, NSA network-SA network slice selection subscription data mapping table, NSA network-SA network SMF selection subscription data mapping table, NSA network- SA network session management subscription data mapping table.
  • signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table may include:
  • serving gateway control plane function SGW-C sends or receives the S8-C signaling of the home PDN gateway PGW.
  • performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table also includes:
  • forwarding the data message corresponding to the signaling on the user plane may include:
  • the SGW-U sends or receives the S8-U user plane message of the home PDN gateway PGW.
  • the control plane Before signaling conversion is performed on the control plane according to the NSA network-SA network subscription data mapping table in the embodiment of the present invention, it may further include:
  • the process of performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table may further include:
  • the process of performing signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table may further include:
  • S402 Forward the data message corresponding to the signaling on the user plane.
  • signaling conversion is performed on the control plane according to the NSA network-SA network subscription data mapping table, where the signaling conversion includes the conversion from SA network signaling to NSA network signaling, Or the conversion of NSA network signaling to SA network signaling; further, the data message corresponding to the signaling is forwarded on the user plane; it solves the problem that after the user roams from the NSA network to the SA network in some cases, due to the current 4/5G The network elements cannot directly communicate with each other, and the visited place can only fall back to 4G for access, and users cannot enjoy the problem of 5G high-speed services.
  • the method for intercommunication between the NSA network and the SA network completes the intercommunication of 4G and 5G network signaling, and realizes that NSA users can access and enjoy 5G services in 5G after roaming to the SA network. To a certain extent, the user's experience satisfaction is improved.
  • the embodiment of the present invention provides a device for interworking between an NSA network and an SA network, and the device for interworking between an NSA network and an SA network includes a first network element 601; wherein:
  • the first network element 601 is set to perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, where the signaling conversion includes the conversion of SA network signaling to NSA network signaling, or NSA network signaling to SA Network signaling conversion;
  • the data message corresponding to the signaling is forwarded on the user plane.
  • the first network element 601 is referred to as Roaming GW.
  • the device for intercommunication between the NSA network and the SA network may further include a second network element 602, where:
  • the second network element 602 is configured to obtain NSA network subscription data and a 4G authentication vector parameter group;
  • the NSA network-SA network subscription data mapping table is generated according to the NSA network subscription data and the 4G authentication vector parameter group.
  • the second network element 602 obtains the NSA network subscription data and the 4G authentication vector parameter group, which may include:
  • the second network element 602 generates the NSA network-SA network subscription data mapping table according to the NSA network subscription data and the 4G authentication vector parameter group, including:
  • the 4G authentication vector parameter group is used to transform the NSA network subscription data to generate SA network subscription data, and the NSA network-SA network subscription data mapping table is generated according to the NSA network subscription data and the SA network subscription data.
  • the NSA network-SA network subscription data mapping table generated in the embodiment of the present invention may include mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data.
  • mobility management subscription data may include mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data.
  • slice selection subscription data may include mobility management subscription data, slice selection subscription data, session management function entity SMF selection subscription data, and session management subscription data.
  • the first network element 601 in the embodiment of the present invention may include four first sub-network elements, which are the first sub-network element one hSMF, the first sub-network element two hUPF, and the first sub-network element.
  • the first sub-network element one hSMF is set to register with the storage function NRF with the role of the home SMF hSMF, and exchange N16 messages with the visited SMF vSMF;
  • the first sub-network element three is set as the serving gateway control plane function SGW-C to send or receive the S8-C signaling of the home PDN gateway PGW;
  • the first sub-network element two, hUPF is set to interact with the visited UPF and vUPF in the role of the home UPF hUPF to interact with the N9 user plane and downlink messages;
  • the first sub-network element four, SGW-U is set as the serving gateway user plane function SGW-U to send or receive the S8-U user plane message of the home PDN gateway PGW.
  • the first sub-network element one hSMF and the first sub-network element three SGW-C perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, and may further include:
  • the first sub-network element two hUPF and the first sub-network element four SGW-U forwarding the data message corresponding to the signaling on the user plane may further include:
  • the first subnet element one hSMF and the first subnet element three SGW-C in the embodiment of the present invention perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table; the first subnet Element two hUPF and the first sub-network element four SGW-U are for forwarding data packets corresponding to signaling on the user plane.
  • the first network element 601 in the embodiment of the present invention may further include a first sub-network element five and a first sub-network element six; among them:
  • the first sub-network element five is set as the allocation and management of the user's EPS bearer identifier EBI;
  • the first sub-network element 6 is set for the access of the domain name system DNS, and the query and selection of the attribution packet data network management PGW.
  • the first network element 601 in the embodiment of the present invention may further include a first sub-network element seven and a first sub-network element eight; among them:
  • the first sub-network element 7 is set to perform charging when receiving a charging instruction during the process of signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, and perform the charging function;
  • the first sub-network element 8 is set to monitor when receiving a monitoring instruction during the process of signalling conversion on the control plane according to the NSA network-SA network subscription data mapping table, and execute the monitoring function.
  • the local serving gateway SGW can select the first network element 601 as a PGW for access, where the first network element 601 completes the proxy PGW work.
  • the device for interworking between the NSA network and the SA network includes a first network element, and the first network element performs signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, wherein the signaling conversion includes SA The conversion of network signaling to NSA network signaling, or the conversion of NSA network signaling to SA network signaling; further, the data message corresponding to the signaling is forwarded on the user plane; it solves the problem that in some cases, the user is from the NSA network After roaming to the SA network, because the current 4/5G network elements cannot communicate directly, the visited place can only fall back to 4G for access, and users cannot enjoy the problem of 5G high-speed services.
  • the device for intercommunication between the NSA network and the SA network completes the intercommunication of 4G and 5G network signaling, and realizes that NSA users can access and enjoy 5G services in 5G after roaming to the SA network. To a certain extent, the user's experience satisfaction is improved.
  • an embodiment of the present invention provides a network management system.
  • the network management system includes the device 701 for intercommunication between the NSA network and the SA network described in the second embodiment; please also refer to Figure 10, the NSA network and The SA network intercommunication device is deployed at the location of the international gateway office.
  • this embodiment does not fully describe all examples of the device for interworking between the NSA network and the SA network in the second embodiment. It should be clear that all the examples in the second embodiment are applicable to This embodiment.
  • the network management system includes a device for interworking between the NSA network and the SA network deployed at the location of the international gateway office.
  • the device is set to perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table.
  • Signaling conversion includes the conversion of SA network signaling to NSA network signaling, or the conversion of NSA network signaling to SA network signaling; further, the data message corresponding to the signaling is forwarded on the user plane; it solves some situations After Chinese users roam from the NSA network to the SA network, because the current 4/5G network elements cannot communicate directly, the visited place can only fall back to 4G for access, and users cannot enjoy the problem of 5G high-speed services.
  • the network management system provided by the embodiment of the present invention completes the intercommunication of 4G and 5G network signaling, and realizes that NSA users can access and enjoy 5G services in 5G mode after roaming to the SA network, which greatly improves users Experience satisfaction.
  • the embodiment of the present invention is described by taking the process of UE registering under the SA network and initiating basic session establishment as an example.
  • S1101 The UE has accessed the 5G network and initiates a PDU session establishment request.
  • AMF initiates an SMF query request to NRF (single-chip wireless transceiver), selects vSMF according to vPLMN, and selects hSMF (ie Roaming GW) according to hPLMN.
  • NRF single-chip wireless transceiver
  • vSMF vPLMN
  • hSMF ie Roaming GW
  • S1103 The AMF initiates a session establishment request to the vSMF, carrying the Roaming GW address.
  • S1104 The vSMF judges that this is a roaming user call, and the roaming mode is return to local access, and then forwards the session establishment request to hSMF (ie Roaming GW).
  • hSMF ie Roaming GW
  • the Roaming GW queries the NSA/SA IWF for the user's session subscription data, and if the charging function is enabled, the charging process is initiated.
  • S1106 Roaming GW queries iDNS for the PGW address, completes the mapping from DNN to APN, establishes tunnel resources, allocates EBI, and initiates an S8 session establishment request to the home PGW.
  • S1107 The PGW initiates an IP-CAN session establishment request to PCRF (Policy and Charging Rules Function), and returns a session establishment response to SGW-C (that is, Roaming GW).
  • PCRF Policy and Charging Rules Function
  • Roaming GW receives the response from PGW, converts EPC Bearer QoS parameters into 5G QosFlow parameters, maps S1u tunnel to N3 tunnel, and sends a session establishment acceptance response to vSMF.
  • the vSMF receives the response from the Roaming GW, calls AMF's N1N2MessageTransfer (N1, N2 port message transfer) service, and returns a session establishment acceptance response to the UE.
  • AMF N1N2MessageTransfer (N1, N2 port message transfer) service
  • S1110 AMF interacts with NR and UE, and the follow-up is the same as the normal 5G process, and will not be described one by one.
  • S1111 If the UE requests an IPv6 session, the PGW will send an RA message, which will be passed to the NR through the Roaming GW, and finally to the UE side.
  • the embodiment of the present invention takes the process of initiating an update on the network side as an example for description.
  • the AMF initiates an Rx Request to request PCRF to establish a language specific load;
  • the PGW receives the PCRF policy update request, creates a local bearer, and initiates a local bearer creation request to the visited SGW (ie Roaming GW).
  • Roaming GW creates a local bearer, and completes multiple downlink S8u bearer GTPU (GPRS Tunnelling Protocol for User Plane, user plane GPRS tunneling protocol) tunnels, aggregated into a N9 GTPU tunnel, and vice versa, maps the uplink QosFlow traffic received from the N9 port To multiple S8u tunnels, and initiate a session update request to vSMF.
  • GTPU GPRS Tunnelling Protocol for User Plane, user plane GPRS tunneling protocol
  • the vSMF invokes the N1N2MessageTransfer (N1N2 message transfer) service, and initiates a session update request to the AMF.
  • N1N2MessageTransfer N1N2 message transfer
  • S1204 The AMF initiates an N2 session request to the NR, carrying QosFlow resources, and an N1SM message to the UE.
  • S1205 The UE returns a PDU session update completion response.
  • the AMF carries the N1SM message through session update request signaling.
  • S1207 The vSMF forwards the PDU session update completion response to the hSMF (ie Roaming GW).
  • Roaming GW converts N16 signaling into S8 bearer creation response message and sends it to PGW.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • the embodiment of the present invention takes the process of the UE initiating session modification as an example for description.
  • the UE triggers the session modification during the Internet access process, such as requesting the establishment of a new QosFlow.
  • S1301 The UE initiates a session update request to the network.
  • the AMF invokes the PDUSessionUpdateSMContext Request (PDU Session Update SM Content Request) service of the vSMF, and carries the session update request of the UE.
  • PDUSessionUpdateSMContext Request PDU Session Update SM Content Request
  • the vSMF invokes the PDUSession Update Request (session update request) service of hSMF (that is, Roaming GW), and carries the session update request of the UE.
  • hSMF that is, Roaming GW
  • Roaming GW converts Qosflow information, establishes a bearer tunnel, and initiates a bearer resource command to the PGW.
  • S1305 The PGW reports a bearer establishment request to the Roaming GW. If the request is received by the network side, the subsequent process is the same as that in the fifth embodiment, and will not be repeated here.
  • the Qosflow modification and deletion procedures requested by the UE are similar.
  • the embodiment of the present invention uses a process in which the UE initiates a session release as an example for description.
  • S1401 The UE needs to release a single session and initiates a PDU session release request to the network.
  • the AMF invokes the PDUSessionUpdateSMContext Request (PDU Session Update SM Content Request) service of the vSMF, and carries the session release request of the UE.
  • PDUSessionUpdateSMContext Request PDU Session Update SM Content Request
  • the vSMF invokes the PDUSession Update Request (PDU Session Update) service of hSMF (that is, Roaming GW), and carries the session release request of the UE.
  • PDU Session Update PDU Session Update
  • the PGW initiates an IP-CAN session exchange request to the PCRF, releases local session resources, and returns a session release request response to the SGW (ie Roaming GW).
  • Roaming GW releases core network tunnel resources, and calls the Nsmf_PDUSession_Update (Nsmf_PDU session request) service to the vSMF, and initiates a PDU session release request to the UE.
  • Nsmf_PDUSession_Update Nsmf_PDU session request
  • S1408 The vSMF sends a session update response to the AMF, carrying the N1 SM container (PDU session release command) to the UE to release the PDU session of the UE.
  • N1 SM container PDU session release command
  • S1409 The AMF forwards the session release command to the UE.
  • S1410 The UE responds to the session release command and returns a session release result.
  • S1411 The AMF forwards the session release result to the vSMF.
  • vSMF notifies hSMF (that is, Roaming GW) of the UE's session release result.
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • the embodiment of the present invention takes the process of initiating session release on the network side as an example for description.
  • the PGW receives the PCRF's IP-CAN Session Modification (IP-CAN session modification) indication that the session needs to be terminated and initiates a bearer release request to the visited SGW (ie Roaming GW), deletes the default bearer of the session, that is, releases the entire session.
  • IP-CAN Session Modification IP-CAN session modification
  • Roaming GW releases core network tunnel resources, and calls the vSMF PDU Session Update Request (PDU Session Update Request) service to request the deletion of the session.
  • PDU Session Update Request PDU Session Update Request
  • the vSMF invokes the N1N2MessageTransfer (N1N2 message transfer) service of the AMF, and initiates a session release request to the AMF.
  • N1N2MessageTransfer N1N2 message transfer
  • the AMF initiates an N2 resource release request to the NR, and sends a PDU session release command to the UE.
  • S1506 The AMF forwards the session release result to the vSMF.
  • vSMF notifies hSMF (ie Roaming GW) of the UE's session release result.
  • the Roaming GW converts the N16 signaling into a S15 delete default bearer response, and sends it to the PGW.
  • the embodiment of the present invention also provides a computer-readable storage medium.
  • the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to realize The steps of the method for intercommunication between NSA network and SA network.
  • the computer-readable storage medium includes volatile or nonvolatile, removable or Non-removable media.
  • Computer-readable storage media include but are not limited to RAM (Random Access Memory), ROM (Read-Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable read only memory, charged Erasable Programmable Read-Only Memory) ), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, Or any other medium that can be used to store desired information and that can be accessed by a computer.
  • the method for intercommunication between the NSA network and the SA network, the device for intercommunication between the NSA network and the SA network, and the network management system provided by the embodiment of the present invention perform signaling conversion on the control plane according to the NSA network-SA network subscription data mapping table, wherein the signaling conversion Including the conversion of SA network signaling to NSA network signaling, or the conversion of NSA network signaling to SA network signaling. Further, the data message corresponding to the signaling is forwarded on the user plane; it solves the problem of users from After the NSA network roams to the SA network, because the current 4/5G network elements cannot communicate directly, the visited place can only fall back to 4G for access, and users cannot enjoy the problem of 5G high-speed services.
  • the method for intercommunication between the NSA network and the SA network, the device for intercommunication between the NSA network and the SA network, and the network management system provided by the embodiment of the present invention complete the intercommunication of 4G and 5G network signaling, and realize that after the NSA user roams to the SA network Can access and enjoy 5G services in 5G mode.
  • the device interoperating between the NSA network and the SA network, and the functional modules/units in the device can be implemented as software (a computing device can be used. Implementation of the program code), firmware, hardware, and appropriate combinations thereof.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may consist of several physical components. The components are executed cooperatively.
  • the computer-readable medium may include computer storage. Medium (or non-transitory medium) and communication medium (or temporary medium).
  • the term computer storage medium includes volatile and non-volatile data implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Sexual, removable and non-removable media.
  • communication media usually contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media. . Therefore, the present invention is not limited to any specific combination of hardware and software.

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Abstract

一种NSA网络与SA网络互通的方法、装置及网络管理系统。NSA网络与SA网络互通的方法包括：根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，所述信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换(S401)；在用户面转发所述信令对应的数据报文(S402)。

Description

NSA网络与SA网络互通的方法、装置及网络管理系统
相关申请的交叉引用
本申请基于申请号为201911019904.8、申请日为2019年10月24日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明实施例涉及但不限于移动通信网络技术领域，具体而言，涉及但不限于，涉及一种NSA(Non-Standalone，非独立组网)网络与SA(Standalone，独立组网)网络互通的方法、NSA网络与SA网络互通的装置及网络管理系统。
背景技术
移动通讯相比于固定接入，最大的优势在于用户位置的可移动，如果用户移动到本局控制的基站范围以外，则称之为漫游。漫游按话务是否需迂回到归属地，分为LBO(Local BreakOut，本地疏导接入)以及HR(Home-Routed，家乡路由接入)两种模式。
其中，在实际运营时，对于国内漫游，为了避免对骨干网络的流量冲击，一般采用LBO(拜访地接入)，而对于国际漫游，涉及费用以及安全原因，一般运营商漫游协议，均采用HR回归属地的方式。
在5G发展的过程中，各个运营商进展不一致，很可能存在归属地是EPS(Evolved Packet System，演进的分组系统)网络，或者5G NSA网络，此时NR仅作为E-UTRAN基站的辅助节点，核心网仍然是EPC(Evolved Packet Core，演进的分组核心网)，而拜访地已经升级到SA 5GC(5G Core Network，5G核心网)网络。
如果用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，这样用户就无法享受5G高速业务了。
发明内容
本发明实施例提供的NSA网络与SA网络互通的方法、NSA网络与SA网络互通的装置及网络管理系统，在至少一定程度上解决的技术问题之一是在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务。
有鉴于上述技术问题，本发明实施例提供了一种NSA网络与SA网络互通的方法，包括：根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，所述信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；在用户面转发所述信令对应的数据报文。
本发明实施例还提供了一种NSA网络与SA网络互通的装置，所述装置包括第一网元；所述第一网元被设置为根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，所述信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；在用户面转发所述信令对应的数据报文。
本发明实施例还提供了一种网络管理系统，所述网络管理系统包括如上所述的NSA网络与SA网络互通的装置，所述装置部署在国际关口局位置。
本发明其他特征和相应的有益效果在说明书的后面部分进行阐述说明，且应当理解，至少部分有益效果从本发明说明书中的记载变的显而易见。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1为在一些情形中LBO漫游互操作的示意图；
图2为在一些情形中HR漫游互操作的示意图；
图3为在一些情形中NSA用户漫游到SA网络下接入的网络架构示意图；
图4为本发明实施例一提供的NSA网络与SA网络互通的方法的基本流程示意图；
图5为本发明实施例一提供的生成NSA网络-SA网络签约数据映射表的基本流程示意图；
图6为本发明实施例二提供的NSA网络与SA网络互通的装置的结构示意图一；
图7为本发明实施例二提供的NSA网络与SA网络互通的装置的结构示意图二；
图8为本发明实施例二提供的第一网元的结构示意图；
图9为本发明实施例三提供的网络管理系统的结构示意图；
图10为本发明实施例三提供的NSA用户漫游到SA网络下接入的网络架构示意图；
图11为本发明实施例四提供的UE在SA网络下注册，发起基本会话建立的基本流程示意图；
图12为本发明实施例五提供的网络侧发起更新的基本流程示意图；
图13为本发明实施例六提供的UE发起会话修改的基本流程示意图；
图14为本发明实施例七提供的UE发起会话释放的基本流程示意图；
图15为本发明实施例八提供的网络侧发起会话释放的基本流程示意图。
具体实施方式
移动通讯相比于固定接入，最大的优势在于用户位置的可移动，如果用户移动到本局控制的基站范围以外，则称之为漫游。漫游按话务是否需迂回到归属地，分为LBO(Local BreakOut，本地疏导接入)以及HR(Home-Routed，家乡路由接入)两种模式。
图1是LBO漫游互操作示意图。如图1所示，当UE(User Equipment，用户设备)漫游从hPLMN(home Public Land Mobile Network，归属地公共陆地移动网络)漫游到vPLMN(visited Public Land Mobile Network，拜访地公共陆地移动网络)后，如果是4G接入，将从拜访地的MME(Mobility Management Entity，移动管理单元)到SGW(Serving Gateway，服务网关)，其中SGW包括SGW-C(服务网关控制平面功能)和服务网关用户平面功能SGW-U，最终通过拜访地的PGW(Packet Data Network Gateway，分组数据网关)直接访问Internet，其中PGW包括PGW-C(PDN GateWay，PDN网关控制平面功能)和PGW-U(PDN GateWay，PDN网关用户平面功能)；如果是5G接入，则从AMF(Access and Mobility Management function，接入与移动性管理功能实体)，到拜访地的SMF(Session Management function，会话管理功能实体)和PGW-C，最终通过拜访地的UPF(User plane function，用户面功能实体)和PGW-U直接访问Internet。相关策略由拜访地的PCF(visited Policy Control Function，拜访地策略控制功能实体)与归属地的PCF(home Policy Control Function，归属地策略控制实体)决定。应当理解的是，图1中各名词前的前缀“v”表示拜访地，前缀“h”表示漫游地，后续相同。
图2是HR漫游互操作示意图。如图2所示，当UE漫游从h PLMN漫游到vPLMN网络后，如果4G接入，将从拜访地的MME到拜访地的SGW(SGW-C、SGW-U)，并路由到归属地的PGW(PGW-C、PGW-U)，从归属地接入Internet。如果是5G接入，则从拜访地AMF选择拜访地的SMF以及归属地的SMF，最终通过归属地的UPF接入Internet。
其中，在实际运营时，对于国内漫游，为了避免对骨干网络的流量冲击，一般采用LBO(拜访地接入)，而对于国际漫游，涉及费用以及安全原因，一般运营商漫游协议，均采用HR回归属地的方式。
在5G发展的过程中，各个运营商进展不一致，很可能存在归属地是EPS(Evolved Packet System，演进的分组系统)网络，或者5G NSA网络，此时NR仅作为E-UTRAN基站的辅助节点，核心网仍然是EPC(Evolved Packet Core，演进的分组核心网)，而拜访地已经升级到SA 5GC(5G Core Network，5G核心网)网络。
如图3所示，如果用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，这样用户就无法享受5G高速业务了。
为了使本发明的目的、技术方案及优点更加清楚明白，下面通过具体实施方式结合附图对本发明实施例作进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例一：
为了解决在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题，本发明实施例中提供了一种NSA网络与SA网络互通的方法，通过根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换，进一步地，在用户面转发信令对应的数据报文；请参见图4所示，如图4为本实施例提供的NSA网络与SA网络互通的方法的基本流程示意图。
S401：根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换。
本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换之前，还可包括至少以下步骤，请参见图5所示：
S501：获取NSA网络签约数据和4G鉴权向量参数组；
S502：根据NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表。
本发明实施例中获取NSA网络签约数据和4G鉴权向量参数组，可包括：
通过Gr/S6d接口或S6a接口从HLR(Home Subscriber Server，归属签约用户服务器)或HSS(Home Location Register，归属位置寄存器)获取NSA网络签约数据和4G鉴权向量参数组；
根据NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表，包括：
利用4G鉴权向量参数组对NSA网络签约数据进行转换生成SA网络签约数据，根据NSA网络签约数据和SA网络签约数据生成NSA网络-SA网络签约数据映射表。
本发明实施例中生成的NSA网络-SA网络签约数据映射表可包括移动性管理签约数据、切片选择签约数据、会话管理功能实体SMF选择签约数据和会话管理签约数据。例如，请参见表一至四，分别为NSA网络-SA网络移动性管理签约数据映射表、NSA网络-SA网络切片选择签约数据映射表、NSA网络-SA网络SMF选择签约数据映射表、NSA网络-SA网络会话管理签约数据映射表。
表一
Figure PCTCN2020123441-appb-000001
Figure PCTCN2020123441-appb-000002
表二
Figure PCTCN2020123441-appb-000003
表三
Figure PCTCN2020123441-appb-000004
表四
Figure PCTCN2020123441-appb-000005
Figure PCTCN2020123441-appb-000006
本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，可包括：
以归属地SMF hSMF角色到贮存功能NRF注册，并与拜访地SMF vSMF交互N16消息；
作为服务网关控制平面功能SGW-C发送或接收归属地PDN网关PGW的S8-C信令。
应当理解的是，本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，还包括：
EPC QoS业务流模板EPC QoS TFT与5G QoS简档/规则QoS Profile/Rule的转换；
域名系统DNS的访问，归属地分组数据网管PGW的查询与选择。
本发明实施例中在用户面转发信令对应的数据报文，可包括：
以归属地UPF hUPF角色与拜访地UPF vUPF交互N9用户面上下行报文；
作为服务网关用户平面功能SGW-U发送或接收归属地PDN网关PGW的S8-U用户面报文。
应当理解的是，本发明实施例中在用户面转发信令对应的数据报文，还包括：
S8u隧道与N9隧道的转换和管理。
本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换之前，还可包括：
用户EPS承载标识EBI的分配和管理；
域名系统DNS的访问，归属地分组数据网管PGW的查询与选择。
本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，还可包括：
在接收到计费指令时进行计费，执行计费功能。
本发明实施例中根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，还可包括：
在接收到监听指令时进行监听，执行监听功能。
S402：在用户面转发信令对应的数据报文。
本发明实施例提供的NSA网络与SA网络互通的方法，根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；进一步地，在用户面转发该信令对应的数据报文；解决了在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题。也即本发明实施例提供的NSA网络与SA网络互通的方法，完成了4G、5G网络信令的互通，实现了NSA用户漫游到SA网络后能够以5G制式接入享受5G业务，在极大程度上提升了用户的体验满意度。
实施例二：
为了解决在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题，请参见图6所示，本发明实施例中提供了一种NSA网络与SA网络互通的装置，NSA网络与SA网络互通的装置包括第一网元601；其中：
第一网元601被设置为根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；
在用户面转发信令对应的数据报文。
应当理解的是，本发明实施例中将第一网元601称之为Roaming GW。
请参见图7所示，NSA网络与SA网络互通的装置还可包括第二网元602，其中：
所述第二网元602被设置为获取NSA网络签约数据和4G鉴权向量参数组；
根据所述NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表。
本发明实施例中第二网元602获取NSA网络签约数据和4G鉴权向量参数组，可包括：
通过Gr/S6d接口或S6a接口从存量HLR/HSS获取NSA网络签约数据和4G鉴权向量参数组；
第二网元602根据NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表，包括：
利用4G鉴权向量参数组对NSA网络签约数据进行转换生成SA网络签约数据，根据NSA网络签约数据和SA网络签约数据生成NSA网络-SA网络签约数据映射表。
本发明实施例中生成的NSA网络-SA网络签约数据映射表可包括移动性管理签约数据、切片选择签约数据、会话管理功能实体SMF选择签约数据和会话管理签约数据。例如，请参见实施例一中所述的表一至四，这里不再赘述。
请参见图8所示，本发明实施例中的第一网元601可包括四个第一子网元，分别为第一子网元一hSMF、第一子网元二hUPF、第一子网元三SGW-C、第一子网元四SGW-U；其中：
第一子网元一hSMF被设置为以归属地SMF hSMF角色到贮存功能NRF注册，并与拜访地SMF vSMF交互N16消息；
第一子网元三被设置为作为服务网关控制平面功能SGW-C发送或接收归属地PDN网关PGW的S8-C信令；
第一子网元二hUPF被设置为以归属地UPF hUPF角色与拜访地UPF vUPF交互N9用户面上下行报文；
第一子网元四SGW-U被设置为作为服务网关用户平面功能SGW-U发送或接收归属地PDN网关PGW的S8-U用户面报文。
本发明实施例中的第一子网元一hSMF和第一子网元三SGW-C根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，还可包括：
EPC QoS业务流模板EPC QoS TFT与5G QoS简档/规则QoS Profile/Rule的转换；
域名系统DNS的访问，归属地分组数据网管PGW的查询与选择。
本发明实施例中的第一子网元二hUPF和第一子网元四SGW-U在用户面转发信令对应的数据报文，还可包括：
S8u隧道与N9隧道的转换和管理。
应当理解的是，本发明实施例中第一子网元一hSMF和第一子网元三SGW-C是根据NSA网络-SA网络签约数据映射表在控制面进行信令转换；第一子网元二hUPF和第一子网元四SGW-U是在用户面转发信令对应的数据报文。
本发明实施例中的第一网元601还可包括第一子网元五和第一子网元六；其中：
第一子网元五被设置为用户EPS承载标识EBI的分配和管理；
第一子网元六被设置为域名系统DNS的访问，归属地分组数据网管PGW的查询与选择。
应当理解的是，第一子网元五和第一子网元六所执行的步骤在第一子网元一hSMF和第一子网元三SGW-C所执行的步骤之前。
本发明实施例中的第一网元601还可包括第一子网元七和第一子网元八；其中：
第一子网元七被设置为在根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，接收到计费指令时进行计费，执行计费功能；
第一子网元八被设置为在根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，接收到监听指令时进行监听，执行监听功能。
本发明实施例中当用户在SA网络中，位置移动到仅4G基站覆盖区域时，本地服务网关SGW可选择第一网元601作为PGW接入，其中第一网元601完成代理PGW工作。
本发明实施例提供的NSA网络与SA网络互通的装置，装置包括第一网元，第一网元根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；进一步地，在用户面转发该信令对应的数据报文；解决了在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题。也即本发明实施例提供的NSA网络与SA网络互通的装置，完成了4G、5G网络信令的互通，实现了NSA用户漫游到SA网络后能够以5G制式接入享受5G业务，在极大程度上提升了用户的体验满意度。
实施例三：
为了解决在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题，请参见图9所示，本发明实施例中提供了一种网络管理系统，该网络管理系统包括实施例二中所述的NSA网络与SA网络互通的装置701；同时请参见图10所示，NSA网络与SA网络互通的装置部署在国际关口局位置。
值得注意的是，为了不累赘说明，在本实施例中并未完全阐述实施例二中NSA网络与SA网络互通的装置的所有示例，应当明确的是，实施例二中的所有示例均适用于本实施例。
本发明实施例提供的网络管理系统包括部署在国际关口局位置的NSA网络与SA网络互通的装置，该装置被设置为根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；进一步地，在用户面转发该信令对应的数据报文；解决了在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题。也即本发明实施例提供的网络管理系统，完成了4G、5G网络信令的互通，实现了NSA用户漫游到SA网络后能够以5G制式接入享受5G业务，在极大程度上提升了用户的体验满意度。
实施例四：
本发明实施例在上述各实施例的基础上，以UE在SA网络下注册，发起基本会话建立的过程为示例进行说明。
S1101：UE已经接入5G网络，发起PDU会话建立请求。
S1102：AMF向NRF(单片无线收发器)发起SMF查询请求，根据vPLMN选择到vSMF，根据hPLMN选择到hSMF(即Roaming GW)。
S1103：AMF向vSMF发起会话建立请求，携带Roaming GW地址。
S1104：vSMF判断这是个漫游用户呼叫，并且漫游模式是回归属地接入，则向hSMF(即Roaming GW)转发会话建立请求。
S1105：Roaming GW向NSA/SA IWF查询用户的会话签约数据，如果开启计费功能，则发起计费流程。
S1106：Roaming GW向iDNS查询PGW地址，完成DNN到APN的映射，建立隧道资源、分配EBI，向归属地PGW发起S8会话建立请求。
S1107：PGW向PCRF(Policy and Charging Rules Function，策略与计费规则功能单元)发起IP-CAN会话建立请求，并给SGW-C(即Roaming GW)返回会话建立响应。
S1108：Roaming GW收到PGW的响应，把EPC Bearer的QoS参数转换成5G QosFlow参数，并把S1u隧道映射成N3隧道，给vSMF发送会话建立接受响应。
S1109：vSMF收到Roaming GW的响应，调用AMF的N1N2MessageTransfer(N1、N2口消息传送)服务，给UE返回会话建立接受响应。
S1110：AMF与NR、UE交互，后续同5G正常流程，不一一描述。
S1111：假如UE请求的是IPv6类型的会话，则PGW会发送RA消息，通过Roaming GW传递给NR，最终到UE侧。
实施例五：
本发明实施例在上述各实施例的基础上，以网络侧发起更新的的过程为示例进行说明，比如AMF发起Rx Request请求PCRF建立语言专载；
S1201：PGW接收到PCRF的策略更新请求，创建本地承载，并向拜访地SGW(即Roaming GW)发起创建本地承载请求。
S1202：Roaming GW创建本地承载，完成下行S8u多条承载GTPU(GPRS Tunnelling Protocol for User Plane，用户面GPRS隧道协议)隧道，聚合到N9一条GTPU隧道上，反之把N9口接收到的上行QosFlow流量映射到多条S8u隧道上，并向vSMF发起会话更新请求。
S1203：vSMF调用N1N2MessageTransfer(N1N2消息转换)服务，向AMF发起会话更新请求。
S1204：AMF向NR发起N2会话请求，携带QosFlow资源，以及给UE的N1SM消息。
S1205：UE返回PDU会话更新完成响应。
S1206：AMF通过会话更新请求信令来携带N1SM消息。
S1207：vSMF向hSMF(即Roaming GW)转发PDU会话更新完成响应。
S1208：Roaming GW把N16信令转换成S8的承载创建响应消息发送给PGW。
对于承载更新、承载删除的流程类似，这里不再赘述。
实施例六：
本发明实施例在上述各实施例的基础上，以UE发起会话修改的过程为示例进行说明，UE在上网过程中，触发会话修改，如：请求建立新的QosFlow。
S1301：UE向网络发起会话更新请求。
S1302：AMF调用vSMF的PDUSessionUpdateSMContext Request(PDU会话更新SM内容请求)服务，携带UE的会话更新请求。
S1303：vSMF调用hSMF(即Roaming GW)的PDUSession Update Request(会话更新请求)服务，携带UE的会话更新请求。
S1304：Roaming GW转换Qosflow信息，并建立承载隧道，向PGW发起承载资源命令。
S1305：PGW向Roaming GW上报承载建立请求，如果请求被网络侧接收，后续流程同实施例五，这里不再赘述。
对于UE请求的Qosflow修改、删除流程类似。
实施例七：
本发明实施例在上述各实施例的基础上，以UE发起会话释放的过程为示例进行说明。
S1401：UE需要释放单个会话，向网络发起PDU会话释放请求。
S1402：AMF调用vSMF的PDUSessionUpdateSMContext Request(PDU会话更新SM内容请求)服务，携带UE的会话释放请求。
S1403：vSMF调用hSMF(即Roaming GW)的PDUSession Update Request(PDU会话更新)服务，携带UE 的会话释放请求。
S1404：Roaming GW给vSMF返回会话释放请求响应。
S1405：Roaming GW向PGW发起会话释放请求。
S1406：PGW向PCRF发起IP-CAN会话交换请求，释放本地会话资源，并给SGW(即Roaming GW)返回会话释放请求响应。
S1407：Roaming GW释放核心网隧道资源，并向vSMF调用Nsmf_PDUSession_Update(Nsmf_PDU会话请求)服务，向UE发起PDU会话释放请求。
S1408：vSMF向AMF发送会话更新响应，携带给UE的N1 SM容器(PDU会话释放命令)，以释放UE的PDU会话。
S1409：AMF转发会话释放命令给UE。
S1410：UE响应会话释放命令，返回会话释放结果。
S1411：AMF转发会话释放结果给vSMF。
S1412：vSMF通知hSMF(即Roaming GW)UE的会话释放结果。
实施例八：
本发明实施例在上述各实施例的基础上，以网络侧发起会话释放的过程为示例进行说明。
S1501：PGW收到PCRF的IP-CAN Session Modification(IP-CAN会话修改)指示需要终止会话向拜访地SGW(即Roaming GW)发起释放承载请求，删除会话默认承载，即释放整个会话。
S1502：Roaming GW释放核心网隧道资源，并调用vSMF的PDU Session Update Request(PDU会话更新请求)服务，请求删除会话。
S1503：vSMF调用AMF的N1N2MessageTransfer(N1N2消息转换)服务，向AMF发起会话释放请求。
S1504：AMF向NR发起N2资源释放请求，并向UE发送PDU会话释放命令。
S1505：UE返回会话释放结果。
S1506：AMF转发会话释放结果给vSMF。
S1507：vSMF通知hSMF(即：Roaming GW)UE的会话释放结果。
S1508：Roaming GW把N16信令转换成S15的删除默认承载响应，发送给PGW。
实施例九：
本发明实施例还提供一种计算机可读存储介质，计算机可读存储介质存储有一个或者多个程序，一个或者多个程序可被一个或者多个处理器执行，以实现如实施例一中的NSA网络与SA网络互通的方法的步骤。
该计算机可读存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、计算机程序模块或其他数据)的任何方法或技术中实施的易失性或非易失性、可移除或不可移除的介质。计算机可读存储介质包括但不限于RAM(Random Access Memory，随机存取存储器)，ROM(Read-Only Memory，只读存储器)，EEPROM(Electrically Erasable Programmable read only memory，带电可擦可编程只读存储器)、闪存或其他存储器技术、CD-ROM(Compact Disc Read-Only Memory，光盘只读存储器)，数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。
本发明实施例的有益效果是：
本发明实施例提供的NSA网络与SA网络互通的方法、NSA网络与SA网络互通的装置及网络管理系统，根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，其中信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换，进一步地，在用户面转发该信令对应的数据报文；解决了在一些情形中用户从NSA网络漫游到SA网络后，由于目前4/5G网元无法直接互通，拜访地只能回落到4G进行接入，用户无法享受5G高速业务的问题。也即本发明实施例提供的NSA网络与SA网络互通的方法、NSA网络与SA网络互通 的装置及网络管理系统，完成了4G、5G网络信令的互通，实现了NSA用户漫游到SA网络后能够以5G制式接入享受5G业务。
显然，本领域的技术人员应该明白，上文中所公开方法中的全部或某些步骤、NSA网络与SA网络互通的装置、装置中的功能模块/单元可以被实施为软件(可以用计算装置可执行的程序代码来实现)、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。
此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。所以，本发明不限制于任何特定的硬件和软件结合。
以上内容是结合具体的实施方式对本发明实施例所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (12)

  1. 一种NSA网络与SA网络互通的方法，包括：
    根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，所述信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；
    在用户面转发所述信令对应的数据报文。
  2. 如权利要求1所述的NSA网络与SA网络互通的方法，其中，所述根据NSA网络-SA网络签约数据映射表在控制面进行信令转换之前，还包括：
    获取NSA网络签约数据和4G鉴权向量参数组；
    根据所述NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表。
  3. 如权利要求2所述的NSA网络与SA网络互通的方法，其中，所述获取NSA网络签约数据和4G鉴权向量参数组，包括：
    通过Gr/S6d接口或S6a接口从归属签约用户服务器HLR或归属位置寄存器HSS获取NSA网络签约数据和4G鉴权向量参数组；
    所述根据所述NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表，包括：
    利用所述4G鉴权向量参数组对所述NSA网络签约数据进行转换生成SA网络签约数据，根据所述NSA网络签约数据和SA网络签约数据生成NSA网络-SA网络签约数据映射表。
  4. 如权利要求2所述的NSA网络与SA网络互通的方法，其中，所述NSA网络-SA网络签约数据映射表包括移动性管理签约数据、切片选择签约数据、会话管理功能实体SMF选择签约数据和会话管理签约数据。
  5. 如权利要求1所述的NSA网络与SA网络互通的方法，其中，所述根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，包括：
    以归属地SMF hSMF角色到贮存功能NRF注册，并与拜访地SMF vSMF交互N16消息；
    作为服务网关控制平面功能SGW-C发送或接收归属地PDN网关PGW的S8-C信令；
    所述在用户面转发所述信令对应的数据报文，包括：
    以归属地UPF hUPF角色与拜访地UPF vUPF交互N9用户面上下行报文；
    作为服务网关用户平面功能SGW-U发送或接收归属地PDN网关PGW的S8-U用户面报文。
  6. 如权利要求1所述的NSA网络与SA网络互通的方法，其中，所述根据NSA网络-SA网络签约数据映射表在控制面进行信令转换之前，还包括：
    用户EPS承载标识EBI的分配和管理；
    域名系统DNS的访问，归属地分组数据网关PGW的查询与选择。
  7. 如权利要求1-6任一项所述的NSA网络与SA网络互通的方法，其中，所述根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，还包括：
    在接收到计费指令时进行计费，执行计费功能。
  8. 如权利要求1-6任一项所述的NSA网络与SA网络互通的方法，其中，所述根据NSA网络-SA网络签约数据映射表在控制面进行信令转换的过程中，还包括：
    在接收到监听指令时进行监听，执行监听功能。
  9. 一种NSA网络与SA网络互通的装置，包括第一网元；其中，所述第一网元被设置为：
    根据NSA网络-SA网络签约数据映射表在控制面进行信令转换，所述信令转换包括SA网络信令到NSA网络信令的转换，或NSA网络信令到SA网络信令的转换；
    在用户面转发所述信令对应的数据报文。
  10. 如权利要求9所述的NSA网络与SA网络互通的装置，还包括第二网元；其中，所述第二网元被设置为：
    获取NSA网络签约数据和4G鉴权向量参数组；
    根据所述NSA网络签约数据和4G鉴权向量参数组生成NSA网络-SA网络签约数据映射表。
  11. 如权利要求9或10所述的NSA网络与SA网络互通的装置，其中，当用户在SA网络中，位置移动到仅4G基站覆盖区域时，本地服务网关SGW选择所述第一网元作为PGW接入，所述第一网元完成代理PGW工作。
  12. 一种网络管理系统，包括如权利要求9-11任一项所述的NSA网络与SA网络互通的装置，所述装置部署在国际关口局位置。
PCT/CN2020/123441 2019-10-24 2020-10-23 Nsa网络与sa网络互通的方法、装置及网络管理系统 WO2021078287A1 (zh)

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