WO2021142804A1 - 一种通信方法及相关设备 - Google Patents

一种通信方法及相关设备 Download PDF

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Publication number
WO2021142804A1
WO2021142804A1 PCT/CN2020/072869 CN2020072869W WO2021142804A1 WO 2021142804 A1 WO2021142804 A1 WO 2021142804A1 CN 2020072869 W CN2020072869 W CN 2020072869W WO 2021142804 A1 WO2021142804 A1 WO 2021142804A1
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WIPO (PCT)
Prior art keywords
npn
message
online
information
terminal device
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PCT/CN2020/072869
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English (en)
French (fr)
Inventor
杨晨晨
靳维生
晋英豪
谭巍
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20913932.8A priority Critical patent/EP4084533A4/en
Priority to CN202080054679.6A priority patent/CN114208296B/zh
Priority to PCT/CN2020/072869 priority patent/WO2021142804A1/zh
Publication of WO2021142804A1 publication Critical patent/WO2021142804A1/zh
Priority to US17/866,001 priority patent/US20220353798A1/en

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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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • This application relates to the field of network technology, and in particular to a communication method and related equipment.
  • Non-public networks is a network under discussion in the 3rd generation partnership project (3rd generation partnership project, 3GPP) standard. Different from traditional cellular networks, NPN networks only allow some with specific permissions User access. In existing standards, terminal devices cannot access non-contracted NPN networks, which affects communication efficiency.
  • This application provides a communication method and related equipment in order to improve communication efficiency.
  • an embodiment of the present application provides a communication method, including: a first access network device sends a first message to a terminal device, the first message is used to indicate that a cell under the first access network device supports online subscription NPN ; Receive a second message sent by the terminal device, the second message is used to instruct the terminal device to request an online subscription for NPN.
  • the terminal device can request the NPN of the online subscription, so that the terminal device and the network side can dynamically update the information of the NPN signed by the terminal device, so that the terminal device can flexibly access the non-subscribed NPN NPN improves communication efficiency.
  • the first message includes information indicating the NPN supporting online subscription
  • the information indicating the NPN supporting online subscription includes at least one of the following: information about the identity of the first network or the first indication information.
  • the identification information of the first network is the identification information of the NPN that supports the online subscription
  • the first indication information is used to indicate that the online subscription is supported.
  • the second message includes information indicating the NPN requesting online subscription
  • the information indicating the NPN requesting online subscription includes at least one of the following: information about the identity of the second network or the second network Instructions.
  • the identification information of the second network is the identification information of the NPN requesting the online subscription
  • the second indication information is used to indicate that the online subscription is requested.
  • the identification information of the second network may be the same as the identification information of the first network, and the first indication information may also be the same as the second indication information.
  • the second message includes the identification information of the second network and the identification information of the third network, the second network is a network requesting an online subscription, and the third network is a contracted network. In this way, not only can random access to the cell be achieved, but also online subscription can be achieved.
  • the second message is used to request access to the first cell under the first access network device, and the first access network device verifies whether the terminal device has subscribed to at least one NPN supported by the first cell ; If not, the first access network device determines that the terminal device requests an online subscription to the NPN supported by the first cell.
  • the terminal device sends a second message to the first access network device through the network resource indicated by the first message, and the first access network device determines based on the network resource where the second message is located.
  • the terminal device requests the NPN for online subscription.
  • the second message is used by the terminal device to request access to the first cell under the first access network device.
  • the second message includes the identification information of the second network
  • the first access network device verifies whether the second network is a subscribed network; if not, the first access network device determines the terminal The device requests an online subscription to the NPN corresponding to the information of the identifier of the second network.
  • the first access network device sends a third message to the terminal device, and the third message is used to indicate that the terminal device has successfully signed an NPN online.
  • the third message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN information includes at least one of the following: information about the identity of the fourth network or third Instructions.
  • the identification information of the fourth network is the identification information of the NPN whose online subscription is successful, and the third indication information is used to indicate that the online subscription is successful.
  • the first access network device sends a fourth message to the terminal device, and the fourth message is used to indicate the reason value for the first access network device to reject the terminal device's request for online subscription of the NPN.
  • the first access network device receives a fifth message sent by the core network device, where the fifth message is used to indicate the reason value for the core network device to reject the terminal device's request to sign an NPN online.
  • the first access network device sends a sixth message to the core network device.
  • the sixth message is used to instruct the terminal device to request an online subscription for NPN; the first access network device receives the first message sent by the core network device.
  • Seven messages the seventh message is used to indicate that the terminal device successfully signs online for NPN or indicates that the terminal device fails to sign online.
  • the sixth message includes information indicating the NPN for requesting online subscription
  • the information indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the fifth network or fourth Instructions.
  • the identification information of the fifth network is the identification information of the NPN requesting the online subscription
  • the fourth indication information is used to indicate the online subscription request.
  • the seventh message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the sixth network or fifth Instructions.
  • the identification information of the sixth network is the identification information of the NPN for which the online subscription is successful, and the fifth indication information is used to indicate that the online subscription is successful.
  • the identification information of the fifth network may be the same as the identification information of the sixth network, and the fourth indication information may also be the same as the fifth indication information.
  • the seventh message includes fifth indication information, and the fifth indication information is used to indicate whether the terminal device has an online subscription capability. Prevent terminal equipment from subsequently malicious online signing, and avoid terminal equipment from continuously initiating online signing requests.
  • the first access network device receives the eighth message sent by the core network device, where the eighth message includes information indicating that the NPN supporting online subscription is supported, and the eighth message is used to indicate the NPN supporting online subscription.
  • the information includes at least one of the following: identification information of the seventh network or seventh indication information.
  • the identification information of the seventh network is the identification information of the NPN that supports online subscription, and the seventh indication information is used to indicate that online subscription is supported.
  • the first access network device sends a ninth message to the core network device, where the ninth message includes information indicating that the NPN that supports online subscription is supported, and the information that is used to indicate that the NPN that supports online subscription is supported
  • the information includes at least one of the following: identification information of the eighth network or eighth indication information.
  • the identification information of the eighth network is the identification information of the NPN that supports online subscription, and the seventh indication information is used to indicate that online subscription is supported.
  • the first access network device includes a first distributed unit, and the first distributed unit sends a first message to the terminal device, and the first message is used to indicate that the cell under the first distributed unit supports Online NPN subscription and/or cells under the second distributed unit support online NPN subscription; the first distributed unit receives a second message sent by the terminal device, and the second message is used to instruct the terminal device to request online NPN subscription.
  • the first message may include address information of the N3IWF entity, and the address information is used to instruct the terminal device to request the core network device to sign an NPN online through the N3IWF entity.
  • the terminal device can establish an IPsec tunnel according to the address information of the N3IWF entity, and request the core network device to sign an online NPN through the established IPsec tunnel.
  • the terminal equipment realizes online signing of NPN by establishing an IPsec tunnel, reducing signaling overhead.
  • the aforementioned N3IWF entity may also be another entity, for example, a third-party server (service provider).
  • the first access network device receives the tenth message sent by the second access network device, and the tenth message is used to indicate the NPN of the online subscription supported by the cell under the second access network device And/or the NPN of the online subscription supported by the neighboring cells of the cell under the second access network device.
  • the neighboring cells of the cell under the second access network device may be deployed under the second access network device, or may be deployed under other access network devices.
  • the first message is also used to indicate the NPN of the online subscription supported by the cell under the second access network device.
  • the first message includes sixth indication information, and the sixth indication information is used to indicate whether the cell where the terminal device is located supports assisting the second cell to sign an NPN online.
  • the second cell is a neighboring cell of the cell where the terminal device is located. It is realized that the terminal device can sign the NPN supported by multiple cells online in one cell, thereby reducing the signaling overhead of signing the NPN online between the terminal device and the first access network device.
  • the identification information of the first network includes at least one of the following: public land mobile network identification PLMN ID, network identification NID, closed access group identification CAG ID, or user-readable network identification HRNN.
  • an embodiment of the present application provides a communication method, including: a terminal device receives a first message sent by a first access network device, the first message is used to indicate that a cell under the first access network device supports online subscription NPN: Send a second message to the first access network device, the second message is used to instruct the terminal device to request an online subscription for NPN.
  • the terminal device can request the NPN of the online subscription, so that the terminal device and the network side can dynamically update the information of the NPN signed by the terminal device, so that the terminal device can flexibly access the non-subscribed NPN NPN improves communication efficiency.
  • the first message includes information indicating the NPN supporting online subscription
  • the information indicating the NPN supporting online subscription includes at least one of the following: information about the identity of the first network or the first Instructions.
  • the identification information of the first network is the identification information of the NPN that supports the online subscription
  • the first indication information is used to indicate that the online subscription is supported.
  • the first message includes network resource information
  • the network resource is a resource used by a terminal device to request an online subscription for an NPN.
  • the second message includes information indicating the NPN requesting online subscription
  • the information indicating the NPN requesting online subscription includes at least one of the following: information about the identity of the second network or the second network Instructions.
  • the identification information of the second network is the identification information of the NPN requesting the online subscription
  • the second indication information is used to indicate the online subscription request.
  • the second message includes the identification information of the second network and the identification information of the third network, the second network is a network requesting an online subscription, and the third network is a contracted network. In this way, not only can random access to the cell be achieved, but also online subscription can be achieved.
  • the terminal device receives a third message sent by the first access network device, and the third message is used to indicate that the terminal device has successfully signed an NPN online.
  • the third message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN information includes at least one of the following: information about the identity of the fourth network or third Instructions.
  • the identification information of the fourth network is the identification information of the NPN whose online subscription is successful, and the third indication information is used to indicate that the online subscription is successful.
  • the terminal device receives a fourth message sent by the first access network device, where the fourth message is used to indicate the reason value for the first access network device to reject the terminal device's request to sign an NPN online.
  • an embodiment of the present application provides a communication method, including: a core network device receives a first message sent by a first access network device, the first message is used to instruct the terminal device to request an online subscription for NPN; The network access device sends a second message, and the second message is used to indicate that the terminal device has successfully signed an NPN online.
  • the core network device can instruct the terminal device to sign the NPN successfully online, so that the terminal device and the network side can dynamically update the information of the NPN contracted by the terminal device.
  • the terminal equipment flexibly accesses the non-contracted NPN, which improves the communication efficiency.
  • the first message includes information indicating the NPN for requesting online subscription
  • the information indicating the NPN for requesting online subscription includes at least one of the following: information about the identification of the first network or the first Instructions.
  • the first message is used to forward a layer 3 message to the core network device, and the core network device verifies whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, the core network device determines The terminal device requests an online subscription to the NPN supported by the first cell.
  • the first cell is a cell where the terminal device camps on or accesses.
  • the first message includes the identification information of the first network, and the core network device verifies whether the first network is a subscribed network; if not, the core network device determines that the terminal device requests the first online subscription.
  • the NPN corresponding to the network identification information is the NPN corresponding to the network identification information.
  • the first message includes information used to indicate that the first cell under the first access network device supports NPN for online subscription, and the first message is used to indicate that the first cell under the first access network device supports the NPN for online subscription.
  • the information of the NPN supported by the cell for online subscription includes at least one of the following: information of the identity of the third network or third indication information.
  • the second message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the second network or the second network Instructions.
  • the core network device sends a third message to the first access network device, and the third message is used to instruct the core network device to support the NPN for online subscription.
  • the core network device receives a fourth message sent by the first access network device, and the fourth message is used to instruct the first access network device to support the NPN for online subscription.
  • an embodiment of the present application provides a communication method, including: a first distributed unit sends a first message to a terminal device, the first message is used to indicate that a cell under the first distributed unit supports online subscription NPN and/ Or the cell under the second distributed unit supports online subscription of NPN; receiving a second message sent by the terminal device, where the second message is used to instruct the terminal device to request online subscription of NPN.
  • the first distributed unit instructs the terminal device of the NPN of the online subscription, and the terminal device can request the NPN of the online subscription, so that the terminal device and the network side can dynamically update the information of the NPN subscribed by the terminal device, so as to realize the flexible access of the terminal device to the non-signature
  • the NPN improves communication efficiency.
  • the first message is used to indicate information about the NPN supporting online subscription
  • the information used to indicate the NPN supporting online subscription includes at least one of the following: information about the identity of the first network and first indication information .
  • the identification information of the first network is the identification information of the NPN that supports the online subscription
  • the first indication information is used to indicate that the online subscription is supported.
  • the first message includes second indication information, and the second indication information is used to indicate whether the cell where the terminal device is located supports assisting the second cell to sign an NPN online.
  • the second cell is a neighboring cell of the cell where the terminal device is located. It is realized that the terminal device can sign the NPN supported by multiple cells online in one cell, thereby reducing the signaling overhead of signing the NPN online between the terminal device and the first access network device.
  • the first message includes network resource information
  • the network resource is a resource used by a terminal device to request an online subscription for an NPN.
  • the second message includes information indicating the NPN for requesting online subscription
  • the information indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the second network or third Instructions.
  • the identification information of the second network is the identification information of the NPN requesting the online subscription
  • the third indication information is used to indicate that the online subscription is requested.
  • the second message includes the identification information of the second network and the identification information of the third network, the second network is a network requesting an online subscription, and the third network is a contracted network. In this way, not only can random access to the cell be achieved, but also online subscription can be achieved.
  • the second message is used to request access to the first cell under the first distributed unit, and the first distributed unit verifies whether the terminal device has subscribed to at least one NPN supported by the first cell; if If not, the first distributed unit determines that the terminal device requests an online subscription to the NPN supported by the first cell.
  • the second message includes the identification information of the second network
  • the first distributed unit verifies whether the second network is a subscribed network; if not, the first distributed unit determines the terminal device request Online subscription to the NPN corresponding to the identification information of the second network.
  • the terminal device sends a second message to the first distributed unit through the network resource indicated by the first message, and the first distributed unit determines that the terminal device requests an online subscription based on the network resource where the second message is located. NPN.
  • the second message is used by the terminal device to request access to the first cell under the first distributed unit.
  • the first distributed unit sends a third message to the terminal device, and the third message is used to indicate that the terminal device has successfully signed an NPN online.
  • the third message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the fourth network or the fourth network Instructions.
  • the identification information of the fourth network is the identification information of the NPN whose online subscription is successful, and the fourth indication information is used to indicate that the online subscription is successful.
  • the first distributed unit sends a fourth message to the terminal device, and the fourth message is used to indicate the reason value for the first distributed unit to reject the terminal device's request for online subscription of the NPN.
  • the first distributed unit receives the fifth message sent by the central unit, and the fifth message is used to indicate the reason value for the central unit to reject the terminal device's request for online subscription of the NPN.
  • the first distributed unit sends a sixth message to the central unit.
  • the sixth message includes information for instructing the terminal device to request an NPN for online subscription, and the information for instructing the terminal device to request online subscription
  • the NPN information includes at least one of the following: information about the identity of the sixth network or seventh indication information.
  • the sixth message includes the identification information of the seventh network and the identification information of the eighth network, the seventh network is a network requesting an online subscription, and the eighth network is a contracted network. In this way, not only can random access to the cell be achieved, but also online subscription can be achieved.
  • the sixth message is used to send a layer three message to the central unit, and the central unit verifies whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, the central unit determines the terminal device request Online contract for the NPN supported by the first cell.
  • the first cell is a cell where the terminal device camps on or accesses.
  • the sixth message includes the identification information of the ninth network, and the central unit verifies whether the ninth network is a subscribed network; if not, the central unit determines that the terminal device requests an online subscription to the ninth network The NPN corresponding to the identified information.
  • the first distributed unit sends a sixth message to the central unit through the network resource used for online NPN subscription, and the central unit determines the NPN for which the terminal device requests online subscription based on the network resource.
  • the first distributed unit receives a seventh message sent by the central unit, where the seventh message is used to indicate that the terminal device successfully signs online for NPN or indicates that the terminal device fails to sign online.
  • the seventh message includes information indicating a successful online subscription NPN information, and information indicating a successful online subscription NPN information. At least one of the following: information about the identity of the fifth network or fifth indication information.
  • the seventh message includes sixth indication information, and the sixth indication information is used to indicate whether the terminal device has an online subscription capability. Prevent the terminal device from subsequently malicious online signing, and avoid the terminal device from continuously initiating online signing requests.
  • the first distributed unit receives an eighth message sent by the central unit, the eighth message includes information indicating that the central unit supports online subscription NPN and/or the second distributed unit supports online subscription NPN information.
  • the first distributed unit sends a ninth message to the central unit, where the ninth message includes information indicating the NPN supporting online subscription, and the information indicating the NPN supporting online subscription includes at least the following One item: the identification information of the tenth network or the eighth indication information.
  • the identification information of the first network includes at least one of the following: public land mobile network identification PLMN ID, network identification NID, closed access group identification CAG ID, or user-readable network identification HRNN.
  • an embodiment of the present application provides a communication method, including: a terminal device receives a first message sent by a first distributed unit, the first message is used to indicate that a cell under the first distributed unit supports online subscription of NPN and / Or the cell under the second distributed unit supports online NPN subscription; a second message is sent to the first distributed unit, the second message is used to instruct the terminal device to request online NPN subscription.
  • the first distributed unit instructs the terminal device to support the NPN of online subscription, and the terminal device can request the NPN of the online subscription, so that the terminal device and the network side can dynamically update the information of the NPN contracted by the terminal device, and realize the flexible access of the terminal device to the non-
  • the signed NPN improves communication efficiency.
  • the first message is used to indicate information about the NPN supporting online subscription
  • the information used to indicate the NPN supporting online subscription includes at least one of the following: information about the identity of the first network and the first indication information.
  • the first message includes second indication information, and the second indication information is used to indicate whether the cell where the terminal device is located supports assisting the second cell to sign an NPN online.
  • the second cell is a neighboring cell of the cell where the terminal device is located.
  • the first message includes network resource information
  • the network resource is a resource used by a terminal device to request an online subscription for an NPN.
  • the second message includes information indicating the NPN for requesting online subscription
  • the information indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the second network or third Instructions.
  • the second message includes the identification information of the second network and the identification information of the third network
  • the second network is a network requesting an online subscription
  • the third network is a contracted network
  • the terminal device sends a second message to the first distributed unit through the network resource indicated by the first message, and the first distributed unit determines that the terminal device requests an online subscription based on the network resource where the second message is located. NPN.
  • the second message is used by the terminal device to request access to the first cell under the first distributed unit.
  • the terminal device receives a third message sent by the first distributed unit, and the third message is used to indicate that the terminal device has successfully signed an NPN online.
  • the third message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the fourth network or the fourth network Instructions.
  • the terminal device receives a fourth message sent by the first distributed unit, and the fourth message is used to indicate the reason value for the first distributed unit to reject the terminal device's request for online subscription of the NPN.
  • an embodiment of the present application provides a communication method, including: a central unit receives a first message sent by a second distributed unit, the first message is used to indicate that the second distributed unit supports online NPN subscription; The distributed unit sends a second message, and the second message is used to indicate that the central unit supports online NPN subscription.
  • a communication method including: a central unit receives a first message sent by a second distributed unit, the first message is used to indicate that the second distributed unit supports online NPN subscription;
  • the distributed unit sends a second message, and the second message is used to indicate that the central unit supports online NPN subscription.
  • the first message includes information indicating the NPN supporting online subscription
  • the NPN indicating supporting online subscription includes at least one of the following: information about the identity of the first network or first indication information.
  • the second message includes information for indicating support for online subscription NPN
  • the NPN information used for indicating support for online subscription includes at least one of the following: information about the identity of the second network or second indication information.
  • the central unit receives the third message sent by the first distributed unit, and the third message is used to instruct the terminal device to request online subscription of NPN; and the fourth message is sent to the first distributed unit, and the fourth message is used for Instruct the terminal device to successfully sign the NPN online.
  • the third message includes information indicating the NPN requesting online subscription
  • the information indicating the NPN requesting online subscription includes at least one of the following: information about the identity of the third network or third Instructions.
  • the information included in the fourth message is used to indicate the information of the successful online subscription NPN, and the information used to indicate the successful online subscription includes at least one of the following: information about the identity of the fourth network or Fourth instruction information.
  • the central unit sends a fifth message to the first distributed unit, and the fifth message is used to indicate the reason value for the central unit to reject the terminal device's request for online subscription of the NPN.
  • the central unit sends a sixth message to the core network device, and the sixth message is used to instruct the terminal device to request an NPN for online subscription.
  • the central unit receives the seventh message sent by the core network device, where the seventh message is used to indicate that the terminal device successfully signs online for NPN or indicates that the terminal device fails to sign online.
  • the sixth message includes information for indicating the NPN for requesting online subscription, and the information for indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the fifth network or fifth Instructions.
  • the seventh message includes information indicating a successful online subscription NPN information
  • the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the sixth network or the sixth network Instructions.
  • the seventh message includes seventh indication information, and the seventh indication information is used to indicate whether the terminal device has an online subscription capability. Prevent the terminal device from subsequently malicious online signing, and avoid the terminal device from continuously initiating online signing requests.
  • an embodiment of the present application provides a communication method, including: a core network device receives a first message sent by a central unit, the first message is used to instruct the terminal device to request an online NPN subscription; and a second message is sent to the central unit, The second message is used to indicate that the terminal device has successfully signed an NPN online.
  • the central unit instructs the core network device to request the NPN for online subscription, and the core network device instructs the terminal device to successfully sign the NPN online, so that the terminal device and the network side can dynamically update the information of the NPN signed by the terminal device, and realize the flexible access of the terminal device Non-contracted NPN improves communication efficiency.
  • the first message includes information used to indicate the NPN supporting online subscription
  • the information used to indicate the NPN supporting online subscription includes at least one of the following: information about the identity of the first network or the first indication information.
  • the first message is used to forward a layer 3 message to the core network device, and the core network device verifies whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, the core network device determines The terminal device requests an online subscription to the NPN supported by the first cell.
  • the first cell is a cell where the terminal device camps on or accesses.
  • the first message includes the identification information of the first network, and the core network device verifies whether the first network is a subscribed network; if not, the core network device determines that the terminal device requests the first online subscription.
  • the NPN corresponding to the network identification information is the NPN corresponding to the network identification information.
  • the second message includes information indicating a successful online subscription NPN
  • the NPN indicating successful online subscription includes at least one of the following: information about the identity of the second network or second indication information .
  • the core network device sends a third message to the central unit, and the third message is used to instruct the core network device to support online NPN subscription.
  • embodiments of the present application provide a communication device configured to implement the methods and functions performed by any of the foregoing aspects, and is implemented by hardware/software, and the hardware/software includes modules corresponding to the foregoing functions. .
  • an embodiment of the present application provides a first access network device, including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes the The stored program is used to implement the steps in the communication method provided in the first aspect.
  • an embodiment of the present application provides a terminal device, including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes the program stored in the memory.
  • a terminal device including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes the program stored in the memory.
  • an embodiment of the present application provides a core network device, including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes data stored in the memory.
  • the program is used to implement the steps in the communication method provided by the third aspect and the seventh aspect.
  • an embodiment of the present application provides a first distributed unit, including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes the memory
  • the stored program is used to implement the steps in the communication method provided in the fourth aspect.
  • the embodiments of the present application provide a central unit, including: a processor, a memory, and a communication bus, where the communication bus is used to implement connection and communication between the processor and the memory, and the processor executes the program stored in the memory. It is used to implement the steps in a communication method provided by the sixth aspect.
  • this application provides a computer-readable storage medium with instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods of the above aspects.
  • this application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the methods of the above aspects.
  • FIG. 1 is a schematic diagram of an SNPN provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a non-independent networking NPN provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of an online SNPN subscription provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of another communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of another communication device provided by an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a first access network device proposed by an embodiment of the present application.
  • FIG. 15 is a schematic structural diagram of a terminal device proposed by an embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a core network device proposed in an embodiment of the present application.
  • 3GPP defines two NPN deployment modes: stand-alone non-public networks (SNPN) and non-stand-alone NPN.
  • SNPN stand-alone non-public networks
  • NPN non-stand-alone NPN
  • Fig. 1 is a schematic diagram of an SNPN provided by an embodiment of the present application.
  • Public land mobile network includes data network (DN), PLMN user plane function (UPF) entities, PLMN access and mobility management functions (access and mobility management functions) , AMF) entities, non-3GPP interworking function (N3IWF) network elements, and PLMN radio access network equipment (radio access network, RAN) and other network elements.
  • DN data network
  • PLMN access and mobility management functions access and mobility management functions
  • AMF non-3GPP interworking function
  • N3IWF non-3GPP interworking function
  • RAN radio access network equipment
  • SNPN includes network elements such as NPN-UPF entity, NPN-AMF entity, DN and NPN-RAN.
  • SNPN and PLMN have independent core networks.
  • SNPN can be identified by PLMN ID (identifier) and network identifier (network identifier, NID).
  • PLMN ID identifier
  • NID network identifier
  • the parameters broadcast by a cell under the RAN of an SNPN can include at least one of the following: one or more PLMN IDs, one or more NIDs corresponding to each PLMN ID, and human-readable network name (HRNN) , Support user manual network selection instructions, or prohibit other user equipment (UE) that does not support SNPN access.
  • the UE After the UE registers with the SNPN and establishes a protocol data unit (PDU) session, the UE can establish a network protocol security (IPSec) tunnel through the user plane of the PDU session in the SNPN, and then connect to the N3IWF of the PLMN , And register to the PLMN through the IPSec tunnel. vice versa.
  • This interworking method adopts the architecture and mechanism of the UE accessing the 5G Core network (5G Core) through untrusted non-3GPP.
  • FIG. 2 is a schematic diagram of a non-independent networking NPN provided by an embodiment of the present application.
  • Non-independent networking NPN is also called public network integrated NPN (PNI-NPN).
  • NPN and PLMN can share a core network (such as AMF, UPF, etc.), PLMN can deploy PLMN-RAN, and NPN can deploy PNI-NPN-RAN, and PLMN-RAN and PNI-NPN-RAN can be connected through an Xn interface.
  • PLMN and PNI-NPN can also share the same RAN.
  • NPN depends on PLMN for deployment, and PLMN ID can be used to identify the PNI-NPN network.
  • the NPN may be a specific slice in the PLMN, and the UE has subscription data of the PLMN. According to the agreement between the mobile operator and the NPN service provider, the NPN may only be deployed in certain tracing areas (TA). When the UE moves out of the TA range, it can indicate that the UE cannot continue to use the current slice resources in the new registration area.
  • the standard protocol defines a closed access group (closed access group, CAG), and the CAG is identified by the closed access group identifier (CAG ID).
  • CAG closed access group
  • CAG closed access group
  • CAG closed access group identifier
  • a CAG corresponds to a group of users who can access a certain CAG cell (PNI-NPN cell).
  • PNI-NPN can be deployed with the support of the public network.
  • PNI-NPN cells not only need to broadcast the cell identity, but also need to broadcast the CAG ID.
  • the CAG ID is used to identify a group of users who are allowed to access one or more cells associated with the CAG.
  • a PNI-NPN cell can broadcast one or more CAG IDs, and can also broadcast the HRNN corresponding to the CAG ID to provide users with manual selection.
  • at least one of PLMN ID, CAG ID, or HRNN may be collectively referred to as PNI-NPN identification information.
  • the PNI-NPN cell will broadcast the identification information of the PNI-NPN it supports to access in the system information, and the terminal device locally stores the information of the PNI-NPN identification that it subscribes to, and the terminal device receives After the system information broadcast by the cell, compare the identification information of the PNI-NPN supported by the cell with the identification information of the subscribed PNI-NPN stored locally. If there is a PNI-NPN that is allowed to be accessed, the terminal device can access Enter the corresponding cell.
  • the terminal device may report the identification information of the PNI-NPN selected for access to the RAN or AMF through non-access stratum (NAS) or access stratum (AS) information.
  • the AMF also stores the subscription information of the terminal device, for example, stores the allowed CAG list of the terminal device (allowed CAG list).
  • the AMF decides whether to allow the terminal to access. For example, if the identification information CAG ID of the network that is selected for access reported by the terminal device is not in the CAG list that the terminal device is allowed to access stored at the AMF, the AMF rejects the terminal device's access. If the CAG ID of the cell selected for access reported by the terminal device does not exist in the CAG list that the terminal device is allowed to access stored by the AMF, the AMF rejects the terminal device's access.
  • the terminal equipment and AMF will also store the subscription information of the terminal equipment, and the SNPN cell will also broadcast the identification information of the SNPN it supports.
  • the terminal device selects an access cell and the AMF determines whether to allow the terminal device to access.
  • the execution process is similar to the above-mentioned PNI-NPN, and will not be repeated here.
  • the NPN subscription information is stored locally at the terminal device and at the AMF, and only the network that the terminal device chooses to access is in the subscription information, the terminal device can successfully access it.
  • terminal equipment cannot access non-contracted NPN, which affects communication efficiency.
  • FIG. 3 is a schematic flowchart of a communication method provided by an embodiment of the present application. The method includes but is not limited to the following steps:
  • a first access network device sends a first message to a terminal device, where the first message is used to indicate that a cell under the first access network device supports online NPN subscription.
  • the first access network device may be a next generation radio access network (NG RAN) device.
  • NG RAN next generation radio access network
  • the first access network device can use master information block (MIB), system information block (system information block, SIB), radio resource control (radio resource control, RRC) signaling, and media access
  • MIB master information block
  • SIB system information block
  • RRC radio resource control
  • media access media access control, MAC
  • CE control element
  • NAS media access control
  • DCI downlink control information
  • user plane data information sends the first message to the terminal device.
  • the first message includes information used to indicate the NPN supporting online subscription.
  • the information used to indicate the NPN supporting online subscription includes at least one of the following: information of the identity of the first network or first indication information.
  • the first indication information may be used to indicate that the NPN corresponding to the NPN information supports or does not support online subscription, or indicates that the NPN broadcast by the cell under the first access network device supports or does not support online subscription.
  • the information of the identifier of the first network indicates that the NPN corresponding to the information of the identifier of the first network supports online subscription.
  • the first indication information may be used to indicate that all NPNs corresponding to the NPN information broadcast by the cell support online subscription.
  • the first message may also include the identification information of the first network and the first indication information.
  • one or more identifiers correspond to one piece of first indication information, and the first indication information is used to indicate whether the NPN corresponding to the one or more identifiers supports online subscription.
  • the information of the identity of the first network may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • the first network is the NPN that supports online signing.
  • the online subscription NPN supported by the cell may be different from the NPN supported by the cell, and the online subscription NPN supported by the cell may or may not be the NPN supported by the cell.
  • the NPN supported by the cell allows the terminal device to perform traditional access and access, and can provide normal NPN services for the terminal device.
  • the online subscription NPN supported by the cell may not provide normal NPN services for the terminal device.
  • the NPN supported by the cell can be NPN#1 and NPN#2
  • the NPN supported by the cell for online subscription can be NPN#1 and NPN#2, or NPN#2 and NPN#3, or NPN#3 and NPN#3.
  • the terminal device can subscribe to the NPN through the cell, but cannot get the normal NPN service through the cell, and the terminal device successfully signs online through the cell. Afterwards, it may be necessary to reselect other cells to obtain corresponding normal NPN services.
  • the CAG ID#1 and/or NID#1 supported by each PLMN ID can be broadcast, and/or the CAG ID#2 and/or NID#2 of the online subscription supported by the PLMN ID can be broadcast. .
  • the CAG ID#1 or NID#1 supported by the cell can be broadcast, and/or the CAG ID#2 and/or NID#2 of the online subscription supported by the cell can be broadcast.
  • the online subscription NPN supported by the cell can be used only or not only for the online subscription NPN.
  • the above information is broadcast in the SIB1 system information of the cell, for example, the cell access related information (cellAccessRelatedInfo), the PLMN identification information list (PLMN-IdentityInfoList), the NPN identification information list (NPN-IdentityInfoList), and the PLMN in the SIB1
  • the above-mentioned information is broadcast in the identification information (PLMN-IdentityInfo), PNI-NPN identification information (PNI-NPN-IdentityInfo) or SNPN identification information (SNPN-IdentityInfo) cell.
  • the first indication information is used to indicate that the corresponding NPN only supports or not only supports online subscription, or indicates that the NPN broadcast by the cell under the first access network device only supports or not only supports online subscription.
  • the first indication information when used to indicate that the corresponding NPN only supports online subscription, it means that the access network device or cell only supports the corresponding NPN online subscription, but it cannot provide the corresponding normal NPN service for the terminal device, so there is The terminal device corresponding to the NPN subscription information cannot access the NPN cell to obtain the normal NPN service, and the terminal device needs to re-select other cells to obtain the corresponding normal NPN service after successfully signing the contract through the cell.
  • the information of the NPN supporting online subscription included in the first message may be indicated by the information of the NPN broadcast by the system information specified in the existing 3GPP standard, or may be the information of the NPN that is further added independently.
  • the first message may also include information about network resources, and the network resources are resources used by the terminal device to request an online subscription for an NPN.
  • Network resources can include at least one of the following: random access channel (RACH), physical random access channel (PRACH), physical cell ID (physical Cell ID, PCI), or cell wireless network temporary Identification (cell radio network temporary identifier, C-RNTI) and other resources.
  • RACH random access channel
  • PRACH physical random access channel
  • PCI physical Cell ID
  • C-RNTI cell wireless network temporary Identification
  • Network resources can be specifically allocated or reserved.
  • the granularity of network resources can be either cell or NPN.
  • the access network equipment and/or core network equipment can determine whether to subscribe from the network The UE for resource access is requesting an online subscription.
  • NPN as the granularity, when a UE signs an NPN online through a cell, and accesses the network through a specific allocated network resource, the network can determine that the UE accessing from the network resource is requesting to sign the NPN online.
  • the first message includes access priority information for different networks supported by the first access network device, so that the terminal device can perform cell selection, cell reselection, network selection, or access based on this.
  • the system information broadcasts the priority of the public network and/or NPN network supported by the first access network device to be accessible, or different NPN, The priority at which SNPN, PNI-NPN, NID, or CAG can be accessed.
  • different CAG cells supported by the first access network device or the priority levels of PNI-NPN cells that can be accessed are broadcast in the system information.
  • the access priority information for different networks supported by the first access network device may be assisted by OAM or core network device for the first access network device to perform auxiliary configuration and sent to the first access network device, Or, it is configured by the first access network device itself.
  • the system information may be SIB1.
  • the steps of the embodiment of the present application may further include:
  • the first access network device sends a ninth message to the core network device, where the ninth message includes information for indicating that the first access network device supports NPN for online subscription, and the information for indicating NPN for supporting online subscription Including at least one of the following: NPN identification information or indication information.
  • the ninth message please refer to the description of the eighth message, which will not be repeated here.
  • the online subscription NPN supported by the first access network device may be different from the NPN supported by the first access network device.
  • the NPN of the online subscription supported by the first access network device may be the NPN supported by the first access network device, or may not be the NPN supported by the first access network device.
  • the ninth message may be an eighth message, which may be an NG interface setup request (NG setup request), a RAN configuration update message (RAN configuration update), an AMF configuration update acknowledgement message (AMF configuration update acknowledge), and so on.
  • NG setup request NG interface setup request
  • RAN configuration update RAN configuration update
  • AMF configuration update acknowledge AMF configuration update acknowledge
  • the ninth message includes access priority information of different networks supported by the first access network device, so that the AMF can perform access control, resource scheduling, etc. accordingly.
  • the ninth message includes the priority that the public network and/or NPN network supported by the first access network device can be accessed, or the first access Priorities at which different NPN, SNPN, PNI-NPN, NID, or CAG supported by the network device can be accessed.
  • the ninth message includes the priority of the first access network device to access a different CAG or PNI-NPN. Configure CAG priority, PLMN priority, and/or NID priority, etc.
  • the access priority information for different networks supported by the first access network device may be assisted by OAM or core network device for the first access network device to perform auxiliary configuration and sent to the first access network device, Or, it is configured by the first access network device itself.
  • the steps of the embodiment of the present application may further include:
  • the first access network device receives the eighth message sent by the core network device.
  • the eighth message is used to indicate that the core network device supports an NPN for online subscription.
  • the core network device may be an AMF entity or an operation management and maintenance (OAM) entity.
  • the eighth message may be an NG interface setup response (NG setup response), an AMF configuration update message (AMF configuration update), a RAN configuration update confirmation message (RAN configuration update acknowledge), and so on.
  • the eighth message includes information for instructing the core network device to support the NPN for online subscription, and the information for instructing the core network device to support the NPN for online subscription includes at least one of the following: NPN identification information or instruction information.
  • the indication information may be used to indicate whether the corresponding NPN configured by the core network device supports online subscription or whether the NPN broadcast by the cell supports online subscription.
  • the NPN identification information may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • the NPN identification information and the indication information are similar to the first network identification information or the first indication information in step S301, and will not be repeated here.
  • the information used to indicate that the core network device supports the NPN for online subscription may indicate the information about the NPN for online subscription supported by one or more TAs or PLMNs under the core network.
  • the core network device may notify the first access network device of the NPN supported by the core network device of the online subscription through the eighth message, so that the first access network device can proceed to the core network when it subsequently receives the online subscription NPN of the terminal device. Selection or routing of equipment.
  • the online subscription NPN supported by the core network equipment may be different from the NPN supported by the core network equipment.
  • the online subscription NPN supported by the core network equipment may be the NPN supported by the core network equipment or not the NPN supported by the core network equipment.
  • the core network device can assist other core network devices supporting certain NPNs or third-party servers to sign NPN online.
  • the eighth message includes access priority information of different networks supported by the core network device, so that the first access network device can perform access control, resource scheduling, etc. accordingly.
  • the eighth message includes the priority of the public network and/or NPN network supported by the core network device that can be accessed, or the different NPN and/or core network devices supported by the core network device can be accessed.
  • the priority at which PNI-NPN, SNPN, NID or CAG can be accessed.
  • the eighth message includes different CAGs supported by the core network device, or the priority of the PNI-NPN that can be accessed.
  • the access priority information of different networks supported by the core network device may be assisted by the OAM or the first access network device as the core network device for auxiliary configuration and sent to the core network device, or by the core network device Self configuration.
  • the first message may be used to indicate that the cell under the first access network device supports online NPN subscription, or To indicate the NPN of the online subscription supported by the core network device.
  • the first access network device may first send the ninth message to the core network device, and after receiving the ninth message, the core network device then sends the eighth message to the first access network device.
  • the steps of the embodiment of the present application may further include:
  • the first access network device receives a tenth message sent by a second access network device, where the tenth message is used to indicate an NPN of an online subscription supported by a cell under the second access network device.
  • the tenth message can be an Xn setup request message (Xn setup request), an Xn setup response message (Xn setup response), a next-generation radio access network node configuration update message (NG-RAN node configuration update), and a next-generation radio access network node configuration update message.
  • Network access node configuration update confirmation message (NG-RAN node configuration update acknowledge), handover request message (handover request), or handover request acknowledgement message (handover request acknowledge), or handover preparation failure (handover preparation failure), etc.
  • the tenth message may include information indicating the NPN of the online subscription supported by the cell under the second access network device.
  • the information used to indicate the NPN of the online subscription supported by the cell under the second access network device may be carried in the NR serving cell information (served cell information NR) and E-UTRA serving cell of the Xn establishment request message Information (served cell information E-UTRA), NR neighbor cell information (neighbour information NR), E-UTRA neighbor cell information (neighbour information E-UTRA) cell, or the mobility restriction list of the handover request message (mobility restriction list) ) In the cell.
  • the information used to indicate the NPN of the online subscription supported by the cell under the second access network device may include NPN identification information and indication information.
  • the indication information may be used to indicate whether the corresponding NPN network supports online subscription or whether the NPN broadcast by the cell under the second access network device supports online subscription.
  • the NPN identification information may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • the NPN identification information and the indication information are similar to the first network identification information or the first indication information in step S301, and will not be repeated here.
  • the first message may be used to indicate that the cell under the first access network device supports online NPN subscription, It can also be used to indicate the NPN of the online subscription supported by the cell under the second access network device.
  • the information used to indicate the online subscription NPN supported by the cell under the second access network device may indicate the location of a certain cell or multiple cells under the second access network device.
  • Information about the NPN that supports the online contract For example, the information of the online subscription NPN supported by one or more TAs or cells included in the PLMN under the second access network device.
  • the tenth message is used to indicate the NPN of the online subscription supported by the second access network device.
  • the information used to indicate the NPN of the online subscription supported by the second access network device may indicate the information of the NPN of the online subscription supported by the second access network device under one or more TAs or PLMNs.
  • the tenth message includes access priority information of different networks supported by the second access network device, so that the first access network device performs access control, resource scheduling, etc. accordingly.
  • the tenth message includes the priority of the public network and/or NPN network supported by the second access network device to be accessed, or the second access The priority of different NPN, PNI-NPN, SNPN, NID or CAG supported by the network equipment can be accessed.
  • the tenth message includes the access priority of different CAGs supported by the second access network device.
  • the access priority information of different networks supported by the second access network device may be sent by OAM, core network device, or the first access network device for auxiliary configuration for the second access network device. For the second access network device, or configured by the second access network device itself.
  • the first message may include indication information, which is used to indicate whether the cell where the terminal device is located supports assisting neighboring cells to sign NPN online.
  • the neighboring cell may be a cell under the second access network device or a cell under the first access network device other than the cell where the terminal device is located.
  • the cell where the terminal device is located sends the terminal device to support the online signing of NPN for neighboring cells, indicating that it can assist the neighboring cell to sign the NPN online.
  • the NPN signaling overhead is signed online between access network devices.
  • the terminal device sends a second message to the first access network device, where the second message is used to instruct the terminal device to request an online NPN subscription.
  • the terminal device may send the second message to the first access network device through RRC, MAC CE, NAS information, uplink control information (UCI), or user plane data information.
  • the second message can be a random access message (message1, MSG1), an RRC setup request (RRC setup request), an RRC setup complete message (RRC setup complete), an RRC recovery request message (RRC resume request), an RRC recovery complete message (RRC) resume complete), uplink information transfer message (UL information transfer) RRC reestablishment request (RRC reestablishment request), RRC reestablishment complete (RRC reestablishment complete), or UE capability information (UE capability information), etc.
  • the second message includes information for indicating the NPN for requesting online subscription
  • the information for indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the second network or second indication information.
  • the second network is an NPN requesting an online subscription.
  • the identification information of the second network or the indication method of the second indication information is similar to the indication information of the identification information of the first network or the indication method of the first indication information in step S301. Go into details again.
  • the identification information of the second network may be the same as the identification information of the first network.
  • the second message includes indication information, and the indication information is used to inform the first access network device that the terminal device requests an online subscription to the NPN network.
  • the second message includes indication information, and the indication information is used to inform the first access network device whether the terminal device has the ability to subscribe to the NPN network online.
  • the second message includes indication information used to inform the first access network device whether the terminal device supports the proximity indication information function of the NPN cell, and the proximity of the NPN
  • the indication function includes but is not limited to at least one of the following: the proximity indication information function of CAG or the proximity indication information function of NID.
  • the proximity indication information includes one or more of the following information: indication information that the terminal device is entering one or more CAG cells or the neighboring area of the NID cell, the terminal device is leaving one or more CAG cells, or The indication information of the neighboring area of the NID cell, the indication information that the terminal device is entering one or more CAG cells or NID cells, or the indication information that the terminal device is leaving one or more CAG cells or NID cells.
  • the character strings entering and leaving are used to indicate entry and leaving, and the absolute radio frequency channel number (ARFCN) of the cell is used to identify the cell, or the cell ID is used to identify the cell.
  • ARFCN absolute radio frequency channel number
  • the proximity indication information function of CAG and the proximity indication information function of NID respectively may further include but are not limited to at least one of the following: intraFreq proximity indication function (intraFreq proximity indication), inter-frequency proximity indication function (interFreq proximity indication), and different frequencies.
  • Proximity indication function UTRAN or E-UTRAN-ProximityIndication
  • the CAG co-frequency proximity indication function is used to indicate whether the UE supports the performance of the proximity indication function for the CAG cells of the same frequency in the CAG list of the UE allowed to access.
  • the CAG inter-frequency proximity indication function is used to indicate whether the UE supports the execution of the proximity indication function for the inter-frequency CAG cells in the CAG list of the UE allowed to access.
  • the proximity indication function of the CAG heterogeneous system (UTRAN or E-UTRAN) is used to indicate whether the UE supports the proximity indication function for the CAG cell of the heterogeneous system (UTRAN or E-UTRAN) in the CAG list of the UE allowed to access.
  • the NID co-frequency proximity indication function is used to indicate whether the UE supports the proximity indication function to the NID cell that the UE accesses or to the same frequency NID cell in the UE's allowed access NID list.
  • the NID inter-frequency proximity indication function is used to indicate whether the UE supports the proximity indication function to the NID cell accessed with the UE or to the inter-frequency NID cell in the UE's allowed access NID list.
  • the proximity indication function of the NID different system (UTRAN or E-UTRAN) is used to indicate whether the UE supports the access to the NID cell with the UE or to the different system (UTRAN or E-UTRAN) in the NID list of the UE.
  • UTRAN or E-UTRAN is used to indicate whether the UE supports the access to the NID cell with the UE or to the different system (UTRAN or E-UTRAN) in the NID list of the UE.
  • UTRAN UTRAN or E-UTRAN
  • the terminal device may also have a proximity indication function for one or more CAG or NID cells, for example, the CAG or NID currently accessed by the UE, the CAG or NID subscribed by the UE, several specific CAGs or NIDs, Or part of the CAG or NID reported by the UE.
  • the terminal device sends the foregoing information to the first access network device through a UE capability information (UE capability information) message.
  • UE capability information UE capability information
  • the terminal device sends an RRC re-establishment request or RRC recovery request message to the target access network device, and the target access network device sends a UE context acquisition request to the source access network device ( retrieve UE context request) message to obtain the context of the terminal device.
  • the source access network device compares the locally stored context information of the terminal device with the NPN information supported by the cell where the terminal device under the target access network device is located.
  • the source access network device sends a retrieve UE context failure message to the target access network device, and the target access network device rejects the terminal device Re-establish or restore the RRC connection; if there is no conflict, the source access network device sends a retrieve UE context response message to the target access network device, and the target access network device accepts the terminal device to re-establish or restore the RRC connection .
  • the context information of the terminal device includes at least one of the following: a CAG list (allowed CAG list), CAG-only indication, and mobility restriction list (mobility restriction list).
  • the NPN information supported by the cell includes at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • PLMN ID for a terminal device that can only access a CAG cell, if none of the CAG ID/PNI-NPN that the terminal device is allowed to access in the context information is in the CAG ID/PNI-NPN information supported by the target cell, Then the source access network device sends a failure message to the target access device. The source access network device can learn the CAG ID/PNI-NPN information supported by the target cell through the Xn interface establishment process.
  • the source access network device determines whether to accept the terminal device to re-establish or resume the RRC connection, or the target access network device may also make the determination. For example, after the source access network device receives the UE context request (retrieve UE context request) message sent by the target access network device, it feeds back a UE context response (retrieve UE context response) message to the target access network device.
  • the source access network device receives the UE context request (retrieve UE context request) message sent by the target access network device, it feeds back a UE context response (retrieve UE context response) message to the target access network device.
  • the UE context response message is Including the context information of the terminal device, the target access network device compares the received context information of the terminal device with the NPN information supported by the cell where the terminal device under the target access network device is located, if the context of the terminal device If the information conflicts with the NPN information supported by the target cell, the target access network device rejects the terminal device to re-establish or restore the RRC connection; if there is no conflict, the target access network device accepts the terminal device to re-establish or restore the RRC connection, and then The terminal device sends an RRC reestablishment (RRC reestablishment) or RRC resume (RRC resume) message.
  • RRC reestablishment RRC reestablishment
  • RRC resume RRC resume
  • the terminal device may send the second message to the first access network device through a specifically allocated or reserved network resource.
  • the granularity of network resources can be either cell or NPN.
  • cell granularity when a UE makes an online subscription through an access cell and accesses a cell of the network through a specific allocated network resource, the network can determine that the UE accessing from the network resource is requesting an online subscription.
  • NPN as the granularity, when a UE signs an NPN online through a cell, and accesses the access network equipment and/or core network equipment through specific allocated network resources, the access network equipment and/or core network equipment can determine The UE accessing from the network resource is requesting to subscribe to the NPN online.
  • the second message includes information about the identity of the second network and information about the identity of a third network
  • the second network is a network requesting an online subscription
  • the third network is a contracted network.
  • the second message may include a list of identities of the NPN.
  • the first identifier in the list is a signed identifier
  • the other identifiers in the list except the first identifier are identifiers for requesting online NPN subscription.
  • multiple identifiers in the list are signed identifiers, other identifiers in the list except the multiple identifiers are identifiers for requesting online subscription of NPN, and the positions of the multiple identifiers in the list are not fixed. It can be the first one or more identifiers in the list, it can also be the middle one or more identifiers in the list, or the last one or more identifiers in the list.
  • the identification information of the second network and the identification information of the third network are both included in the NAS message of the second message, or both the identification information of the second network and the identification information of the third network are included in the first In the AS message of the second message, or, the identification information of the second network is included in the NAS message of the second message and the identification information of the third network is included in the AS message of the second message, or, the identification of the second network
  • the identification information of the second network is included in the NAS message of the second message and the identification information of the third network is included in the AS message of the second message, or, the identification of the second network
  • the information of is included in the AS message of the second message, but the information about the identity of the third network is included in the NAS message of the second message.
  • At least one of the following network elements is used to indicate the identity of the third network: selected PLMN identity (selected PLMN-Identity), selected network identity (selected Network-Identity) ), selected NPN network identity (selected NPN-Identity), selected NID (selected NID), selected CAG identity (selected CAG ID), selected SNPN network identity, or selected PNI-NPN network identity; established in RRC In the AMF (registered AMF) of the network element registration of the RRC setup complete message, at least one of the following network elements is used to indicate the identity of the second network: PLMN identity (PLMN-Identity), AMF identity (AMF-Identifier) , Network ID (NID), CAG ID (CAG ID), SNPN network ID, or PNI-NPN network ID.
  • the first access network device performs normal access control and core network device selection on the terminal device based on the identification information of the third network, and performs online subscription control on the terminal device based on the identification information of the second network and selects the corresponding
  • the core network equipment executes the online signing process.
  • the second message is used to request access to the first cell under the first access network device, and the first access network device verifies whether the terminal device has subscribed to the first cell.
  • At least one NPN supported if not, the first access network device determines that the terminal device requests an online subscription to the NPN supported by the first cell. If so, the first access network device determines that the terminal device has successfully signed the contract.
  • the first cell may be the only cell in CAG or the only cell in SNPN.
  • the second message includes information about the identity of the second network
  • the first access network device verifies whether the second network is a subscribed network; if not, the first access network device determines the The terminal device requests online subscription of the NPN corresponding to the information of the identifier of the second network. If so, the first access network device determines that the terminal device has successfully signed the contract.
  • the first message may include address information of an N3IWF entity, and the address information is used to instruct the terminal device to request an online subscription for an NPN from a core network device through the N3IWF entity.
  • the address information of the N3IWF entity may also be sent by the first wireless access network device to the terminal device through the first message, or it may be stored by the terminal device.
  • the first wireless access network device may also send the address information of the N3IWF entity to the terminal device. It is not necessary to include the address information of the N3IWF in a message.
  • the terminal device can establish an IPsec tunnel according to the address information of the N3IWF entity, and request the core network device to sign an online NPN through the established IPsec tunnel.
  • the terminal equipment realizes online signing of NPN by establishing an IPsec tunnel, reducing signaling overhead.
  • FIG. 4 is a schematic diagram of an online SNPN subscription provided by an embodiment of the present application.
  • the UE is under the PLMN RAN, and there is no direct connection between the PLMN RAN and the core network of the SNPN, and signaling interaction is not possible.
  • the UE can establish a control plane and/or user plane connection with the SNPN network through the subscribed PLMN and/or subscribed SNPN#1 (for example, establish a NAS signaling transmission channel between the control plane and AMF, and establish a connection on the user plane).
  • PDU session resource establish an IPSec tunnel to interact with the SNPN core network or interact with a third-party server or third-party equipment to sign SNPN#2 online.
  • the aforementioned N3IWF entity may also be another entity, such as a third-party server (service provider).
  • the SNPN RAN is a shared RAN
  • the UE sends a request message to the PLMN RAN.
  • the request message is used to indicate a request to subscribe to the SNPN, and the PLMN RAN passes the request message through the Xn
  • the interface is sent to SNPN RAN, and then SNPN RAN sends the request message to SNPN AMF, and the AMF determines whether the UE has successfully signed the online subscription.
  • SNPN is signed online through the Xn interface between PLMN RAN and SNPN RAN, which reduces signaling overhead.
  • the information that the terminal device needs to send to the first access network device to request the online subscription NPN through the second message may be included in a non-access stratum (NAS) or an access stratum (access stratum). , AS) information.
  • NAS non-access stratum
  • AS access stratum
  • the steps of the embodiment of the present application may further include:
  • the first access network device judges the NPN requested by the terminal device for online subscription, and when it is determined that the NPN requested by the terminal device for online subscription is not the NPN supported by the first access network device for online subscription, or is not
  • the first access network device sends a fourth message to the terminal device, and the fourth message is used to indicate The reason value for the first access network device to reject the terminal device's request for online subscription of the NPN.
  • the reason value can be that the NPN requested by the terminal device is not supported, CAG is not supported, NID is not supported, invalid NPN, invalid CAG, invalid NID, NID not supported by CU (NID not served) by the CU, or NID not supported by the CU, or CAG ID not supported by the CU (CAG ID not served by the CU, or CAG not supported by the CU), etc.
  • the fourth message may be RRC reconfiguration message (RRC reconfiguration), RRC setup message (RRC setup), RRC resume message (RRC resume), downlink message forwarding message (DL information transfer), RRC release (RRC release) Messages, registration rejection messages, error indication messages.
  • RRC reconfiguration RRC reconfiguration message
  • RRC setup RRC setup
  • RRC resume RRC resume
  • DL information transfer downlink message forwarding message
  • RRC release RRC release
  • the steps of the embodiment of the present application may further include:
  • the first access network device sends a sixth message to the core network device, where the sixth message is used to instruct the terminal device to request online NPN subscription.
  • the first access network device may make a preliminary judgment. For example, if the first access network device can sense the NPN requested by the terminal device for online subscription, the NPN requested by the terminal device for online subscription is the NPN supported by the first access network device for online subscription, or When the second access network device supports the NPN for online subscription, or the core network device supports the NPN for online subscription, the first access network device sends the sixth message to the core network device.
  • the sixth message may be an initial UE message (initial UE message), an uplink NAS transmission message (uplink NAS transport), an initial context setup response message (initial context setup response), and a UE context modification response message (UE context modification response).
  • the NAS or AS information of the sixth message includes information for indicating the NPN for requesting online subscription, and the information for indicating the NPN for requesting online subscription includes at least one of the following: information about the identity of the fifth network or the first Four instructions.
  • the identification information of the fifth network may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • the fifth network is an NPN requesting an online subscription.
  • the identification information of the fifth network or the fourth indication information is similar to the identification information of the first network or the indication manner of the first indication information in step S301, and will not be repeated here.
  • the core network device After receiving the sixth message sent by the first access network device, the core network device determines whether to accept the online subscription of the terminal device. If accepted, the core network device updates the context or subscription information related to the terminal device, for example, updates the UE The CAG list that is allowed to access (allowed CAG list), the CAG-only indication, etc. The core network device may send a seventh message to the first access network device, where the seventh message is used to indicate that the terminal device successfully signs an NPN online.
  • the seventh message may be an initial context setup request (initial context setup request), a UE context modification request (UE context modification request), a downlink NAS transport message (downlink NAS transport), and a registration acceptance (registration accept) message.
  • the seventh message includes information indicating a successful online subscription NPN, and the information indicating a successful online subscription NPN includes at least one of the following: information about the identity of the sixth network or fifth indication information.
  • the sixth network is the NPN with successful online contract.
  • the context or subscription information of the terminal device in the seventh message includes priority information for the terminal device to access different networks.
  • the seventh message includes the priority of the terminal device to access the public network and/or NPN network, or the terminal device accesses different NPN, PNI-NPN, SNPN, Priority of NID or CAG.
  • the seventh message includes the priority of the terminal device for accessing a different CAG or PNI-NPN.
  • the first access network device will prioritize scheduling when serving the terminal device accordingly Resources in a certain or certain CAG cells, PNI-NPN cells, public network cells, and/or SNPN cells under the first access network device; or so that the first access network device preferentially assigns terminal equipment accordingly Scheduling or switching to a certain CAG cell, PNI-NPN cell, public network cell and/or SNPN cell under other access network equipment.
  • the priority information for the terminal equipment to access different networks may be configured by the core network equipment for the terminal equipment in the process of contracting or registration and sent to the terminal equipment, or configured by the terminal equipment itself.
  • the priority information for the terminal equipment to access different networks may also be included in the handover request (handover request) message of the NG interface, the handover request (handover request) of the Xn interface, the auxiliary node addition request (s-node) In addition request), secondary node modification request (s-node modification request), and UE context response (retrieve UE context response) messages, the context information of the terminal device can be exchanged between different communication processes and different network elements.
  • the first access network device sends the priority information of the terminal device's access to a different network contained in the NAS or AS information to the terminal device through the fourth message or the third message , So that the terminal equipment can give priority to cell selection, cell reselection, or handover to a certain CAG cell, public network cell, and/or SNPN cell.
  • the seventh message includes sixth indication information, and the sixth indication information is used to indicate whether the terminal device has an online subscription capability.
  • the sixth indication information is used to indicate that the terminal device does not have the ability to sign online, to prevent subsequent malicious online signing of the terminal device, and to prevent the terminal device from continuously initiating online subscription requests. If the core network device accepts the online subscription of the terminal device, the sixth indication information is used to indicate that the terminal device has the capability of online subscription.
  • the core network device can verify whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, the core network device determines that the terminal device requests online subscription to the first cell Supported NPN. If so, the core network device determines that the terminal device has successfully signed the contract.
  • the sixth message includes information about the identity of the supported NPN corresponding to the first PLMN ID of the first cell under the first access network device accessed by the terminal device, and the first PLMN ID is The ID of the PLMN selected to be accessed by the terminal device.
  • the core network device can verify whether the terminal device has subscribed to at least one NPN supported by the first PLMN ID; if not, the core network device determines that the terminal device requests online subscription of the NPN supported by the first PLMN ID . If so, the core network device determines that the terminal device has successfully signed the contract.
  • the core network device receives the sixth message sent by the first access network device, the sixth message includes the identification information of the second network, and the core network device can verify whether the first network is subscribed Network; if not, the core network device determines the NPN corresponding to the information of the identification of the first network that the terminal device requests to subscribe online. If so, the core network device determines that the terminal device has successfully signed the contract.
  • embodiments of this application may further include:
  • the core network device determines whether to accept the online subscription of the terminal device.
  • a fifth message sent by the device where the fifth message is used to indicate the core network device's reason for rejecting the terminal device's request for online subscription of NPN, or the fifth message is used to indicate that the terminal device fails to sign online.
  • the fifth message may be a UE context release command (UE context release command), a registration rejection (registration reject) message, an initial context setup request message (initial context setup request), a UE context modification request message (UE context modification request), Downlink NAS transport message (downlink NAS transport) or error indication (error indication) message.
  • the fifth message includes priority information for the terminal device to access different networks.
  • the first access network device After receiving the fifth message, the first access network device sends a fourth message to the terminal device, where the fourth message is used to indicate the reason why the first access network device rejects the terminal device's request for online NPN subscription Value, or the terminal device fails to sign online.
  • the fourth message is used to indicate the reason why the first access network device rejects the terminal device's request for online NPN subscription Value, or the terminal device fails to sign online.
  • the core network device may send the cause value to the first access network device through the NAS information of the fifth message, and the first access network device forwards the NAS information containing the cause value to the terminal device through the fourth message.
  • the steps of the embodiment of the present application may further include:
  • S309a The first access network device sends a third message to the terminal device, where the third message is used to indicate that the terminal device successfully signs an NPN online.
  • the third message includes information used to indicate a successful online subscription NPN, and the information used to indicate a successful online subscription NPN includes at least one of the following: information about the identity of the fourth network or third indication information.
  • the fourth network is an NPN that has successfully signed an online contract.
  • the third message may be MIB, SIB, RRC, MAC CE, NAS information, downlink control information (DCI) or user plane data information to send a request message to the terminal device.
  • the third message may be an RRC reconfiguration message (RRC reconfiguration), an RRC setup message (RRC setup), an RRC resume message (RRC resume), a registration acceptance (registration accept), or a downlink information transfer (DL information transfer).
  • the core network device sends the updated context or subscription information of the terminal device, etc., to the first access network device through the NAS or AS information of the seventh message after the terminal device signs online for the first access network device.
  • the device accurately executes the subsequent handover process or allows the first access network device to forward the above-mentioned information to the terminal device through the third message.
  • the context or subscription information of the terminal device includes: the allowed CAG list (allowed CAG list), the CAG-only indication, and the wireless access included in the mobility restriction list (mobility restriction list). Access technology restrictions (RAT Restrictions), forbidden area information (forbidden area information), service area information (service area information), and priority information for terminal devices to access different networks.
  • RAT Restrictions Access technology restrictions
  • forbidden area information forbidden area information
  • service area information service area information
  • priority information for terminal devices to access different networks.
  • the first access network device may send the updated context or subscription information of the terminal device contained in the NAS or AS information to the terminal device through a third message, so that the terminal device can accurately perform subsequent cell selection. Or re-election process and so on.
  • the context or subscription information of the terminal device includes: the allowed CAG list (allowed CAG list), the CAG-only indication, and the wireless access included in the mobility restriction list (mobility restriction list). Access technology restrictions (RAT Restrictions), forbidden area information (forbidden area information), service area information (service area information), and priority information for terminal devices to access different networks.
  • RAT Restrictions Access technology restrictions
  • forbidden area information forbidden area information
  • service area information service area information
  • priority information for terminal devices to access different networks.
  • the third message may also include network information that the terminal device is allowed to access this time.
  • the network information that the terminal device can access includes at least one of the following information: CAG ID, NID, HRNN, or PLMN ID.
  • the terminal device After the terminal device receives the third message, if the information that the terminal device has signed or the network information that the terminal device is allowed to access this time is inconsistent with the network information that the terminal device is accessing or camping on at this time, for example, the terminal device is allowed to access this time
  • the network information of is inconsistent with the NID/CAG ID supported by the cell that the terminal device is accessing at this time, or the PNI-NPN that the terminal device has signed is not within the range of the PNI-NPN supported by the cell that the terminal device is accessing at this time
  • the terminal device performs network reselection and cell reselection.
  • the core network device may send the updated context or subscription information of the terminal device, etc., to the first access network device through the NAS or AS information of the fifth message after the terminal device fails to go online.
  • the network access device then sends the updated context or subscription information about the terminal device included in the NAS or AS information to the terminal device through a fourth message.
  • the fourth message may also include network information that the terminal device is allowed to access this time.
  • the network information that the terminal device can access includes at least one of the following information: CAG ID, NID, HRNN, or PLMN ID.
  • the terminal device After the terminal device receives the fourth message, if the information that the terminal device has signed or the network information that the terminal device is allowed to access this time is inconsistent with the network information that the terminal device is accessing or camping on at this time, for example, the terminal device is allowed to access this time
  • the network information of is inconsistent with the NID/CAG ID supported by the cell that the terminal device is accessing at this time, or the PNI-NPN that the terminal device has signed is not within the range of the PNI-NPN supported by the cell that the terminal device is accessing at this time
  • the terminal device performs network reselection and cell reselection.
  • the indication information of S301, S303, S304, and S305 is used to indicate the NPN that supports online subscription
  • the indication information of S302 and S307 is used to indicate the NPN requesting online subscription
  • the indication information in S308a and S309a is used to indicate online subscription.
  • Successful NPN can be as shown in Table 1.
  • Table 1 describes that Indication is used to indicate whether online subscription is supported. Different indications in the table can exist at the same time or only a few of them exist. Similarly, other cells can also exist at the same time or only a few of them. For example, if the message includes Indication#1, it means that the entire cell, access network equipment, core network equipment, central unit, distributed unit, central unit user plane, or central unit control plane supports NPN(s) supported Or neither supports online signing. If the message includes the PLMN ID and Indication#2, it means that the NPN(s) network identified by the NID(s)/CAG ID(s) corresponding to the PLMN ID all supports online subscription or all does not support online subscription.
  • Indication#4 is used to indicate whether the PNI-NPN corresponding to the CAG ID supports online subscription
  • Indication# 5 is used to indicate whether the PNI-NPN corresponding to HRNN supports online subscription
  • Indication#7 is used to indicate whether the SNPN corresponding to the NID supports online subscription
  • Indication#8 is used to indicate whether the SNPN corresponding to HRNN supports online subscription
  • Indication#9 is used for Indicate whether the SNPN, PNI-NPN, CAG or NID in the TAC supports online subscription. The others are similar and will not be repeated here.
  • the indication information can indicate the NPN(s) under a certain cell of the access network equipment, core network equipment, central unit, distributed unit, central unit user plane, or central unit control plane, or under a certain tracking area (TA) Whether the NPN(s) of a certain PLMN or NPN(s) of a certain PLMN supports online subscription.
  • a cell can be identified by one or more of the following: cell identity (cell identity), cell global identifier (CAG), or physical cell identifier (PCI).
  • the tracking area can be identified by one of the following or Multiple identifications: tracking area code (TAC) or tracking area identity (TAI), PLMN can be identified by PLMN ID.
  • Indication can be set to support, unsupport, enabled, disabled, boolean 1, boolean 0, yes, not, successful, or Failed etc. It should be understood that the indication information can be implemented not only by Indication, but also in other ways.
  • the cause value (cause value) is used to indicate, and the terminal device sends an RRC setup request (RRC setup request) message to the access network device.
  • the establishment cause value (establishmentCause), the establishment cause value is online subscription (subscribing, onboarding, or provisioning, etc.) to instruct the terminal device to send a message for requesting online subscription; the terminal device sends an RRC establishment request (RRC resume) to the access network device
  • the request message contains the resume cause value (resumeCause), and the resume cause value is online subscription to instruct the terminal device to send a message for requesting online subscription;
  • the terminal device sends an RRC reestablishment request (RRC reestablishment request) message to the access network device Contains a reestablishmentCause value (reestablishmentCause), and the reestablishment cause value is online subscription, to indicate that the terminal device sends a message due to an online subscription request.
  • the indication information and the NPN identification information may be sent in different SIBs or messages respectively, or sent in the same SIB or message.
  • the NPN identification information may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • the indication is sent in SIB1 to broadcast whether the cell supports online NPN subscription.
  • sending indication and NPN identification information in SIB1 is used to indicate that the cell supports NPN for online subscription.
  • the NPN identification information is sent in SIB1, and the indication is sent in SIB2, other SIBs in existing standards, or newly defined SIBs to indicate that the cell supports the NPN of online subscription.
  • the indication, the identification information of NPN#1 and NPN#2 supported by the cell, the identification information of NPN#1 supported by the cell for online subscription can be broadcast in SIB1, in SIB2, other SIBs in existing standards, Or the newly defined SIB broadcasts the information of the identification of NPN#3 and NPN#4 that the cell supports online subscription.
  • the indication and the identification information of NPN#1 and NPN#2 supported by the cell can be broadcast in SIB1
  • the NPN that the cell supports online subscription can be broadcast in SIB2, other SIBs in existing standards, or newly defined SIBs. #1, NPN#3, and NPN#4 identification information.
  • indication may not only be used to indicate whether the cell supports online NPN subscription, but also may be used to indicate whether neighboring cells support online NPN subscription.
  • 00 means that this cell and neighboring cells do not support online signing
  • 01 means this cell supports online signing
  • 10 means this cell does not support online signing
  • 11 means that both this cell and neighboring cells support online subscription.
  • S301, S303, S304, and S305 contain information for indicating the NPN supporting online subscription
  • S302 and S307 contain information for indicating the NPN requesting online subscription
  • S308a and S309a contain information for indicating successful online subscription.
  • NPN information. The included information used to indicate the NPN supporting online subscription, the information used to indicate the NPN requesting online subscription, and the information used to indicate the successful online subscription may be as shown in Table 2 or Table 3.
  • the NPN identification information may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN.
  • PLMN ID PLMN ID
  • NID NID
  • CAG ID CAG ID
  • HRNN HRNN
  • Table 3 through the public network PLMN, private network PNI-NPN or SNPN, you can sign up for this NPN or other NPN online, and the terminal device can access the core network equipment of the public network PLMN, private network PNI-NPN or SNPN, such as AMF. Sign up for this NPN or other NPN online.
  • the identification information of the NPN network may also be the identification information of the public network PLMN, and the public network can be contracted online through the public network PLMN, private network PNI-NPN or SNPN.
  • Table 1 to Table 3 are also applicable to S501-S510, S601-S607, S701-S707, S801-S810, S901-S903, and will not be described in detail below.
  • terminal devices can sign up to this network online, or sign up to other networks online.
  • One network can perform the online contract of this network, and can also assist another network to perform the online contract.
  • the terminal device may initiate the online subscription request before the RRC setup complete message (RRC setup complete) of the random access process, or after the UE enters the connected state, the terminal device or the first access network device may initiate the online subscription. ask.
  • the core network device may send an initial context setup request message (initial context setup request) to the first access network device.
  • the initial context setup request message may carry indication information, and the indication information is used to indicate Whether the terminal device has the ability to sign online.
  • the foregoing process is that the terminal device initiates the online subscription request, or the first access network device or the core network device initiates the online subscription request.
  • the first access network device or the core network device sends a request message to the terminal device through MIB, SIB, RRC, MAC CE, NAS information, downlink control information (DCI) or user plane data information, actively requesting and
  • the terminal device signs an NPN online. That is, in step S301, step S308, or S309, the first access network device or core network device sends information about the NPN that needs to be signed online, and actively requests the corresponding NPN to be signed online with the terminal device.
  • the online contract mentioned in the embodiments of this application can also be expressed as online registration, online provisioning (provisioning), online deployment (onboarding), etc., mainly to solve how the network system provides and updates the signing information of the terminal equipment
  • the terminal In order to allow the terminal device to request to connect to the desired NPN, the terminal can flexibly access the unsigned NPN, and the operator can flexibly and timely allow potential new users to access the NPN network.
  • the embodiments of this application are applicable to the online contract process, including processes such as updating, modifying, deleting, adding, or releasing the contract information.
  • the identification information of the NPN network may include at least one of the following: PLMN ID, NID, CAG ID, or HRNN, and may also include other information that can be used to identify the identification of the NPN network.
  • the terminal device is instructed by the access network device to support the NPN of online subscription, and the terminal device can request the NPN of the online subscription, so that the terminal device and the network side can dynamically update the information of the NPN contracted by the terminal device to realize the terminal
  • the equipment flexibly accesses non-contracted NPN, which improves communication efficiency.
  • the first access network device may include a first distributed unit and a central unit
  • the second access network device may include a second distributed unit and a central unit.
  • the first distributed unit and the second distributed unit are connected to the same center. unit.
  • the method includes but is not limited to the following steps:
  • S501 The first distributed unit sends a first message to a terminal device, where the first message is used to indicate that the cell under the first distributed unit supports online subscription of NPN and/or the cell under the second distributed unit supports online Sign NPN.
  • the first message is used to indicate that the cell under the first distributed unit supports online subscription of NPN and/or the cell under the second distributed unit supports online Sign NPN.
  • the method in the embodiment of the present application may further include:
  • S503 The second distributed unit sends a ninth message to the central unit.
  • the ninth message is used to indicate that the second distributed unit supports online NPN subscription.
  • the ninth message includes information for indicating that the second distributed unit supports an NPN for online subscription
  • the NPN used for indicating that the second distributed unit supports online subscription includes at least one of the following: an identifier of the first network
  • the first network is the NPN that supports online contracting.
  • the identification information of the first network includes at least one of the following: a public land mobile network identification PLMN ID, a network identification NID, a closed access group identification CAG ID, or a user-readable network identification HRNN.
  • the ninth message may be an F1 setup request message (F1 setup request), an F1 setup response message (F1 setup response), a gNB-DU configuration update message (gNB-DU configuration update), and a gNB-DU configuration update confirmation message (gNB-DU configuration update acknowledge), gNB-CU configuration update message (gNB-CU configuration update), gNB-CU configuration update confirmation message (gNB-CU configuration update acknowledge), etc.
  • the ninth message includes access priority information of different networks supported by the second distributed unit, so that the central unit can perform access control, resource scheduling, etc. accordingly.
  • the ninth message includes the priority that the public network and/or NPN network supported by the second distributed unit can be accessed, or the priority of the second distributed unit.
  • the ninth message includes the different CAGs supported by the second distributed unit, or the priority at which PNI-NPN can be accessed. Configure CAG priority, PLMN priority, and/or NID priority, etc.
  • the access priority information of different networks supported by the second distributed unit may be configured by OAM, core network equipment or central unit for the second distributed unit and sent to the second distributed unit, or , Configured by the second distributed unit itself.
  • the method in the embodiment of the present application may further include:
  • S504 The central unit sends an eighth message to the first distributed unit, where the eighth message is used to indicate that the central unit supports online NPN subscription and/or the second distributed unit supports online NPN subscription.
  • the eighth message may be an FI setup response message (F1 setup response), a gNB-DU configuration update acknowledgement message (gNB-DU configuration update acknowledgement), and a gNB-CU configuration update message (gNB-CU configuration update).
  • the eighth message includes information used to indicate support for online subscription NPN, and the NPN information used to indicate support for online subscription includes at least one of the following: information about the identity of the second network or second indication information.
  • the second network is an NPN that supports online signing.
  • the identification information of the second network or the indication manner of the second indication information may refer to the identification information of the first network or the indication manner of the first indication information in S301 in the foregoing embodiment.
  • the central unit supports online subscription NPN, which can be a collection of online subscription NPN supported by multiple distributed units (such as DU#1, DU#2,..., DU#n), or OAM, etc. as the center
  • NPN that can be signed online for the unit configuration.
  • the eighth message includes priority information of different networks supported by the central unit that can be accessed, so that the first distributed unit performs access control and resource scheduling accordingly, and assists the configuration of the first distributed unit Access control parameters (for example, UAC), etc.
  • the eighth message includes the priority of the central unit to access the public network and/or NPN network, or different NPN, PNI-NPN, SNPN, NID or NID supported by the central unit.
  • the access priority of different CAGs supported by the central unit is configured. Configure CAG priority, PLMN priority, and/or NID priority, etc.
  • PLMN or TA supported by the central unit to indicate that the first distributed unit can preferentially schedule one or some CAG cells, PNI-NPN cells, and public networks Resources in the cell and/or SNPN cell, assist the first distributed unit to configure access control parameters and broadcast corresponding parameters on the Uu port, etc.
  • the access priority information of different networks supported by the central unit can be configured by OAM, core network equipment or the first distributed unit as the central unit and sent to the central unit, or configured by the central unit itself .
  • the central unit can be deployed as a central unit user plane (CU-UP) and a central unit control plane (CU-CP), and the central unit user plane and the central unit control plane are connected through an E1 interface.
  • the user plane of the central unit can send a message to the control plane of the central unit to indicate the priority information of the different networks supported by the user plane of the central unit.
  • the sent message can be established for gNB-CU-UP E1 Request (gNB-CU-UP E1 setup request), gNB-CU-CP E1 setup response (gNB-CU-CP E1 setup response), gNB-CU-UP configuration update (gNB-CU-UP configuration update), gNB- CU-CP configuration update acknowledgement (gNB-CU-CP configuration update acknowledge);
  • the control plane of the central unit can send a message to the user plane of the central unit to indicate the priority information that the control plane of the central unit is configured to support different networks that can be accessed .
  • the message sent can be gNB-CU-UP E1 setup response (gNB-CU-UP E1 setup response), GNB-CU-CP E1 setup request (GNB-CU-CP E1 setup request), GNB-CU-UP Configuration update confirmation (GNB-CU-UP configuration update acknowledge), GNB-CU-CP configuration update (GNB-CU-CP configuration update).
  • S303, S304 For the specific priority sending and configuration method of the E1 interface,
  • S502 The terminal device sends a second message to the first distributed unit, where the second message is used to instruct the terminal device to request an online NPN subscription.
  • S502 For the specific implementation of S502, reference may be made to the description of S302 in the foregoing embodiment, which will not be repeated here.
  • the method in the embodiment of the present application may further include:
  • S505 The first distributed unit sends a fourth message to the terminal device, where the fourth message is used to indicate the reason value for the first distributed unit to reject the terminal device's request for online subscription of the NPN.
  • the fourth message is used to indicate the reason value for the first distributed unit to reject the terminal device's request for online subscription of the NPN.
  • the method in the embodiment of the present application may further include:
  • the first distributed unit sends a sixth message to the central unit, where the sixth message is used to instruct the terminal device to request an online NPN subscription.
  • the first distribution unit can determine whether the NPN requested by the terminal device for online subscription is an NPN that supports online subscription.
  • the specific implementation is similar to S307 in the foregoing embodiment, and will not be repeated here.
  • the first distributed unit may also not process the second message, and send the sixth message to the central unit for processing by the central unit.
  • the sixth message may be initial uplink RRC message forwarding (initial UL RRC message transfer), uplink RRC message forwarding (UL RRC message transfer), UE context setup response (UE context setup response), UE context modification response (UE context modification response), UE context release request (UE context release request), or UE context modification request (UE context modification required).
  • initial uplink RRC message forwarding initial UL RRC message transfer
  • uplink RRC message forwarding UL RRC message transfer
  • UE context setup response UE context setup response
  • UE context modification response UE context modification response
  • UE context release request UE context release request
  • UE context modification required UE context modification required
  • S507 The central unit sends the tenth message to the core network device.
  • the tenth message is used to instruct the terminal device to request online NPN subscription.
  • the tenth message may be an initial UE message (initial UE message) and an uplink NAS transmission message (uplink NAS transport).
  • initial UE message initial UE message
  • uplink NAS transmission message uplink NAS transport
  • the core network device sends an eleventh message to the central device, where the eleventh message is used to indicate the success or failure of the online NPN subscription.
  • the eleventh message may be an initial context setup request (initial context setup request), a UE context modification request (UE context modification request), a downlink NAS transport message (downlink NAS transport), and a registration acceptance (registration accept) message.
  • initial context setup request initial context setup request
  • UE context modification request UE context modification request
  • downlink NAS transport message downlink NAS transport
  • registration acceptance (registration accept) message Registration accept
  • the central unit sends a seventh message to the first distributed unit, where the seventh message is used to indicate the success or failure of the online NPN subscription.
  • the seventh message contains the same content and functions as the eleventh message, and will not be repeated here.
  • the seventh message may be downlink RRC message transfer (DL RRC message transfer), UE context setup request (UE context setup request), UE context modification request (UE context modification request), UE context release request (UE context release) command) or UE context modification confirmation (UE context modification confirm).
  • DL RRC message transfer UE context setup request
  • UE context modification request UE context modification request
  • UE context release request UE context release command
  • UE context modification confirmation UE context modification confirm
  • the first distributed unit sends a third message to the terminal device, where the third message is used to indicate that the online subscription NPN is successful, and the third message includes information for indicating the successful online subscription of the NPN, and the third message is used to indicate
  • the information of the NPN for which the online subscription is successful includes at least one of the following: the identification information of the fourth network or the third indication information.
  • the fourth network is the NPN that has successfully signed online.
  • the third message may be an RRC setup message (RRC setup), an RRC resume message (RRC resume), a registration acceptance (registration accept), or a downlink information transfer (DL information transfer).
  • RRC setup RRC setup
  • RRC resume RRC resume
  • registration acceptance registration accept
  • DL information transfer downlink information transfer
  • the terminal device can send the NID or CAG ID selected by the terminal device through the second message, and if the DU can read the NID or CAG ID.
  • Information if the NID or CAG ID selected by the terminal device is not supported by the CU, the DU sends a message to the CU, for example, sends a UE context release request message to the CU, so that the CU releases the configuration for the UE Resources and context.
  • the message sent by the DU to the CU includes a cause value for releasing the context and resources.
  • the cause value may be NID (NID not served by the CU, or NID not supported by the CU) or not supported by the CU.
  • the CAG ID supported by the CU (CAG ID not served by the CU, or CAG not supported by the CU).
  • the second message may be an RRC setup complete (RRC setup complete) message, and the DU may learn the NID or CAG ID information supported by the CU from the process of F1 interface establishment or CU configuration update.
  • the cell where the terminal device is located assists neighboring cells in signing NPN online, so that the terminal device can sign the NPN supported by multiple cells online in one cell, thereby reducing the number of connections between the terminal device and the first access network device.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the steps in the embodiment of this application at least include:
  • S601 The core network device sends an NG interface setup response (NG setup response) message to the access network device.
  • NG setup response NG setup response
  • the NG interface establishment response message is used to indicate that the core network device supports the NPN for online subscription.
  • S602 The access network device sends a message to the terminal device through MIB, SIB, RRC, MAC CE, NAS information, or user plane data information. This message is used to indicate that the cell under the access network device supports online NPN subscription.
  • MIB MIB
  • SIB SIB
  • RRC Radio Resource Control
  • MAC CE MAC CE
  • NAS information NAS information
  • user plane data information e.g., IP address, IP address, or user plane data information.
  • S603 The terminal device sends a message to the access network device by means of RRC, MAC CE, NAS information, and user plane data information. This message is used to instruct the terminal device to request online NPN subscription.
  • RRC Radio Resource Control
  • MAC CE Mobile Broadband Control
  • NAS information e.g., NCP/O Security
  • user plane data information e.g., NCP/O Security
  • This message is used to instruct the terminal device to request online NPN subscription.
  • the access network device judges the NPN requested by the terminal device for online subscription, and when it is determined that the NPN requested by the terminal device for online subscription is not an NPN that supports online subscription for the access network device, or does not support online subscription for the core network device In the case of NPN, the access network device sends a registration reject message (registration reject) or RRC release (RRC release) message to the terminal device. This message is used to indicate the reason value for the access network device to reject the terminal device's request to sign an NPN online. For the specific implementation of this step, reference may be made to the description of S306 in the foregoing embodiment, which will not be repeated here.
  • S605 The access network device sends an initial UE message (initial UE message) or an uplink NAS transport message (uplink NAS transport) to the core network device.
  • initial UE message initial UE message
  • uplink NAS transport message uplink NAS transport
  • the core network device determines whether to accept the online subscription of the terminal device. If accepted, the core network device updates the context or subscription information about the terminal device, for example, updates the CAG list (allowed CAG list) that the UE is allowed to access, and can only access CAG-only indication, etc. If rejected, it indicates that the terminal device fails to request the online subscription.
  • the core network device may send an initial UE context setup request (initial UE context setup request) or a downlink NAS transport (downlink NAS transport) message to the access network device to indicate the success or failure of the terminal device's online NPN subscription. For the specific implementation of this step, reference may be made to the description of S308a and S308b in the foregoing embodiment, which will not be repeated here.
  • the access network device sends an RRC reconfiguration (RRC reconfiguration) message or the aforementioned registration rejection message to the terminal device, where the RRC reconfiguration message is used to indicate that the terminal device has successfully signed an NPN online.
  • RRC reconfiguration RRC reconfiguration
  • the access network device sends an RRC reconfiguration (RRC reconfiguration) message or the aforementioned registration rejection message to the terminal device, where the RRC reconfiguration message is used to indicate that the terminal device has successfully signed an NPN online.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the steps in the embodiment of this application at least include:
  • the first access network device receives an Xn setup request (Xn setup request) message sent by the second access network device.
  • the Xn establishment request message is used to indicate the cell under the second access network device or the NPN of the online subscription supported by the second access network device.
  • the first access network device sends a message to the terminal device in a manner such as MIB, SIB, RRC, MAC CE, NAS information, or user plane data information.
  • the message is used to indicate the cell under the first access network device, the cell under the second access network device, or the online subscription NPN supported by the second access network device.
  • S703 The terminal device sends a message to the first access network device by means of RRC, MAC CE, NAS information, or user plane data information. This message is used to instruct the terminal device to request online NPN subscription.
  • RRC Radio Resource Control
  • MAC CE Mobile Broadband Control
  • NAS information e.g., NCP/O Authentication Dial
  • user plane data information e.g., IP address, IP address, IP address, or IP address.
  • the first access network device judges the NPN requested by the terminal device for online subscription, and when it is determined that the NPN requested by the terminal device for online subscription is not the NPN supported by the first access network device for online subscription, or it is not the second access network device.
  • the first access network device sends a registration rejection message or an RRC release message to the terminal device. This message It is used to indicate the reason value for rejecting the terminal device's request for online subscription of NPN.
  • This step may be made to the description of S306 in the foregoing embodiment, which will not be repeated here.
  • the first access network device sends an initial UE message (initial UE message) or an uplink NAS transport message (uplink NAS transport) to the core network device.
  • initial UE message initial UE message
  • uplink NAS transport message uplink NAS transport
  • the core network device determines whether to accept the online subscription of the terminal device. If accepted, the core network device updates the context or subscription information of the terminal device, for example, updates the CAG list (allowed CAG list) that the UE is allowed to access. CAG-only indication, etc. If rejected, it indicates that the terminal device fails to request the online subscription.
  • the core network device may send an initial UE context setup request (initial UE context setup request) or a downlink NAS transport message (downlink NAS transport) to the first access network device to indicate the success or failure of the terminal device's online NPN subscription. For the specific implementation of this step, reference may be made to the description of S308a and S308b in the foregoing embodiment, which will not be repeated here.
  • the first access network device sends an RRC reconfiguration (RRC reconfiguration) message, or the aforementioned registration rejection message, to the terminal device, where the RRC reconfiguration message is used to indicate that the terminal device has successfully signed an NPN online.
  • RRC reconfiguration RRC reconfiguration
  • the registration rejection message refer to S704.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the steps in the embodiment of this application at least include:
  • F1 setup request (F1 setup request) message sent by the second distributed unit to the central unit.
  • the F1 establishment request message is used to indicate that the second distributed unit supports online NPN subscription.
  • S802 The central unit sends an FI setup response (F1 setup response) message to the first distributed unit, where the FI setup response message indicates that the central unit supports online subscription NPN and/or the second distributed unit supports online subscription NPN.
  • F1 setup response FI setup response
  • the first distributed unit sends a message to the terminal device through MIB, SIB, RRC, MAC CE, NAS information, or user plane data information. This message is used to indicate that the first distributed unit and the second distributed unit support online NPN subscription.
  • MIB MIB
  • SIB SIB
  • RRC Radio Resource Control
  • MAC CE MAC CE
  • NAS information NAS information
  • user plane data information e.g., IP address, IP address, or user plane data information.
  • S804 The terminal device sends a message to the first distributed unit by means of RRC, MAC CE, NAS information, or user plane data information. This message is used to instruct the terminal device to request online NPN subscription.
  • RRC Radio Resource Control
  • MAC CE Mobile Broadband Control
  • NAS information e.g., NCP/O Authentication Dial
  • user plane data information e.g., IP address, IP address, IP address, or IP address.
  • the first distributed unit judges the NPN requested by the terminal device for online subscription, and when it is determined that the NPN requested by the terminal device for online subscription is not the NPN supported by the first distributed unit for online subscription, or is not the second distributed unit
  • the first distributed unit sends a registration rejection message or an RRC release message to the terminal device, which is used to indicate rejection
  • the reason value of the terminal device requesting online subscription of NPN For the specific implementation of this step, reference may be made to the description of S505 in the foregoing embodiment, and details are not described herein again.
  • the first distributed unit sends an initial uplink RRC message transfer (initial UL RRC message transfer) message to the central unit, where the initial uplink RRC message transfer message is used to instruct the terminal device to request an online subscription for an NPN.
  • the NPN requested by the terminal device for online subscription is the NPN that the first distributed unit supports online subscription, or the NPN that supports online subscription for the second distributed unit, or the NPN that supports online subscription for the core network device
  • the first A distributed unit sends the message to the central unit.
  • this step reference may be made to the description of S506 in the foregoing embodiment, and details are not described herein again.
  • S807 The central unit sends an initial UE message (initial UE message) or an uplink NAS transport message (uplink NAS transport) to the core network device.
  • initial UE message initial UE message
  • uplink NAS transport message uplink NAS transport
  • the core network device determines whether to accept the online subscription of the terminal device. If accepted, the core network device updates the context or subscription information about the terminal device, for example, updates the CAG list (allowed CAG) that the UE is allowed to access, and can only access CAG-only indication, etc. If rejected, it indicates that the terminal device fails to request the online subscription.
  • the core network device may send an initial UE context setup request (initial UE context seutp request) message or a downlink NAS transport message (downlink NAS transport) to the central unit to indicate the success or failure of the terminal device's online NPN subscription.
  • initial UE context setup request initial UE context seutp request
  • downlink NAS transport downlink NAS transport
  • S809 The central unit sends a UE context setup request (UE context setup request) message to the first distributed unit, where the UE context setup request is used to indicate the success or failure of the online NPN subscription.
  • UE context setup request UE context setup request
  • the central unit sends a UE context setup request (UE context setup request) message to the first distributed unit, where the UE context setup request is used to indicate the success or failure of the online NPN subscription.
  • the first distributed unit sends an RRC reconfiguration message or the aforementioned registration rejection message to a terminal device, where the RRC reconfiguration message is used to indicate that the terminal device has successfully signed an NPN online.
  • RRC reconfiguration message is used to indicate that the terminal device has successfully signed an NPN online.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the steps in the embodiment of this application at least include:
  • the access network device sends a message to the terminal device through MIB, SIB, RRC, MAC CE, NAS information, or user plane data information, and the message is used to instruct the access network device to support NPN for online subscription.
  • the message may include the address information of the N3IWF entity.
  • the terminal device establishes an IPsec tunnel according to the address information of the N3IWF entity, and sends an uplink NAS message to the core network device through the established IPsec tunnel, where the uplink NAS message is used to request an online subscription for an NPN.
  • the address information of the N3IWF entity may be sent by the wireless access network device to the terminal device, or may be stored by the terminal device.
  • the aforementioned N3IWF entity may also be other entities, for example, a third-party server (service provider) or a third-party device.
  • S903 The core network device sends a downlink NAS message to the terminal device through the established IPsec tunnel, where the downlink NAS message is used to indicate the success or failure of the online NPN subscription.
  • the downlink NAS message is used to indicate the success or failure of the online NPN subscription.
  • FIG. 10 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • the steps in the embodiment of this application at least include:
  • the first access network device sends a handover request (handover request) message to the second access network device through the Xn interface.
  • the handover request message is used to handover the terminal device from the cell under the first access network device to the target cell under the second access network device.
  • the handover request message includes information about the NPN that the terminal device can access.
  • the second access network device sends a handover preparation failure message to the first access network device.
  • the handover preparation failure message includes the identification information of the NPN supported by the target cell or the target PLMN of the target cell, or the identification information of the online subscribed NPN supported by the target PLMN of the target cell.
  • the first access network device sends the CAG (allowed CAG list) accessible to the terminal device to the second access network device in the mobility restriction list of the handover message.
  • the incoming CAG/PNI-NPN does not belong to the CAG/PNI-NPN supported by any target cell, that is, it is not allowed to access the target cell, and the second access network device carries the target cell or target cell in the handover preparation failure message.
  • the CAG ID/PNI-NPN and/or NID supported by the target PLMN are sent to the first access network device.
  • the first access network device sends the target NID/SNPN to the second access network device.
  • the second access network device carries the target cell's location in the handover preparation failure message.
  • the supportable NID/SNPN and/or PNI-NPN/CAG ID are sent to the first access network device.
  • the above handover preparation failure message carries a reason value.
  • the failure reason can be that the provided CAG ID is not supported (CAG ID(s) not supported), and the provided NID is not supported (NID(s) not supported) ), the provided SNPN is not supported (SNPN(s) not supported), the provided PNI-NPN is not supported (PNI-NPN(s) not supported), invalid CAG ID (invalid CAG ID(s)) , Invalid NID (invalid NID(s)), invalid SNPN (invalid SNPN), invalid PNI-NPN (invalid PNI-NPN), or only CAG (CAG-only access), etc., which indicate the first The CAG ID, NID, SNPN network, or PNI-NPN network provided by the access network device is not supported by the target cell under the second access network device.
  • the second access network device sends a handover failure (handover failure).
  • AMF sends handover preparation failure message (handover preparation failure) to the first access network device, handover failure (handover failure) message and AMF sends handover preparation failure (handover preparation failure) message including target cell or target cell
  • the first access network device sends a handover request (handover required) message to the AMF, and the AMF puts the CAG (allowed CAG list) accessible by the terminal device in the mobility restriction list of the handover request message (mobility restriction list). ) Is sent to the second access network device.
  • a handover request handover required
  • the AMF puts the CAG (allowed CAG list) accessible by the terminal device in the mobility restriction list of the handover request message (mobility restriction list).
  • the access network equipment carries the CAG ID/PNI-NPN and/or NID that the target cell or the target PLMN of the target cell can support in the handover failure message to send AMF, and the AFM forwards it to the first handover failure message in the handover preparation failure message 1.
  • Access network equipment For another example, in the process of NG interface establishment or update, for example, through NG setup response (NG setup response) and AMF configuration update (AMF configuration update) messages, AMF will inform the first access of its configured NID/SNPN information Network equipment and second access network equipment.
  • the first access network device sends a handover required message to AMF.
  • the message does not need to carry the service NID and target NID, because AMF only supports one NID And the standard does not support terminal equipment to switch between different NIDs, so the AMF receives the handover request message sent by the first access network device, and the target NID can be known based on the service NID of the current terminal device.
  • the handover request message includes the second access The Global RAN Node ID of the network device, based on which the AMF addresses the second access network device. If the second access network device does not support NID, there may be no connection between the AMF and the second access network device.
  • the AMF cannot address the second access network device and the handover fails. Then, the AMF feeds back a handover preparation failure message to the first access network device.
  • the message carries the failure reason value. For example, the above-mentioned invalid NID (invalid NID), etc., invalid global RAN node ID (Global RAN Node ID), target RAN not connected); or, between the AMF and the second access network device There may be an NG interface connection.
  • AMF sends a handover request message to the second access network device. If AMF supports only one NID/SNPN, AMF does not need to send the target NID/SNPN to the second access network device.
  • the second access network device carries the NID/SNPN and/or PNI-NPN/CAG ID that the target cell can support in the handover failure message and sends it to the AMF, and the AMF then
  • the handover preparation failure message (handover preparation failure) is forwarded to the first access network device, and the handover failure (handover failure) and/or handover preparation failure message may carry the above reason value, and will not be repeated here.
  • the second access network device If the second access network device originally supports the target NID/SNPN and the configuration information is no longer supported after the configuration information is updated, but the configuration update with AMF has not been performed in time, the handover fails, the second access network device receives the handover request message sent by the AMF Later, it can also trigger the RAN configuration update (RAN configuration update) message, NG reset (NG reset) or error indication (error indication) message process to update the NID/SNPN configuration information of the second access network device.
  • the message may include the above The reason value will not be repeated here.
  • FIG. 11 is a schematic diagram of a communication device provided by an embodiment of the present application.
  • the communication device at least includes a sending module 1101, a receiving module 1102, and a processing module 1103, where:
  • the sending module 1101 is configured to send a first message to a terminal device, where the first message is used to indicate that a cell under the first access network device supports online NPN subscription;
  • the receiving module 1102 is configured to receive a second message sent by the terminal device, where the second message is used to instruct the terminal device to request an online NPN subscription.
  • the processing module 1103 is configured to verify whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, it is determined that the terminal device requests an online subscription for the NPN supported by the first cell. NPN.
  • the processing module 1103 is configured to verify whether the second network is a subscribed network; if not, determine the NPN corresponding to the information of the identification of the second network that the terminal device requests to subscribe online.
  • the sending module 1101 is further configured to send a third message to the terminal device, where the third message is used to indicate that the terminal device successfully signs an NPN online.
  • the sending module 1101 is further configured to send a fourth message to the terminal device, where the fourth message is used to indicate a reason value for the first access network device to reject the terminal device's request to sign an NPN online.
  • the receiving module 1102 is further configured to receive a fifth message sent by the core network device, where the fifth message is used to indicate a reason value for the core network device to reject the terminal device's request for online subscription of the NPN.
  • the sending module 1101 is further configured to send a sixth message to the core network device, where the sixth message is used to instruct the terminal device to request online NPN subscription;
  • the receiving module 1102 is further configured to receive a seventh message sent by the core network device, where the seventh message is used to indicate that the terminal device successfully signs online for NPN or indicates that the terminal device fails to sign online.
  • the receiving module 1102 is further configured to receive an eighth message sent by a core network device, where the eighth message is used to indicate that the core network device supports an NPN for online subscription.
  • the sending module 1101 is further configured to send the first message to the terminal device, where the first message is used to indicate that the cell under the first distributed unit supports online subscription NPN and/or second distributed The cell under the unit supports online signing of NPN;
  • the receiving module 1102 is further configured to receive the second message sent by the terminal device, where the second message is used to instruct the terminal device to request an online NPN subscription.
  • each module can also correspond to the corresponding description of the method embodiments shown in FIG. 3 to FIG. 10 to execute the methods and functions performed by the first access network device in the foregoing embodiments.
  • FIG. 12 is a schematic diagram of another communication device provided by an embodiment of the present application.
  • the communication device at least includes a receiving module 1201 and a sending module 1202, wherein:
  • the receiving module 1201 is configured to receive a first message sent by a first access network device, where the first message is used to indicate that a cell under the first access network device supports online subscription NPN;
  • the sending module 1202 is configured to send a second message to the first access network device, where the second message is used to instruct the terminal device to request an online NPN subscription.
  • the receiving module 1201 is further configured to receive a third message sent by the first access network device, where the third message is used to indicate that the terminal device successfully signs an NPN online.
  • the receiving module 1201 is further configured to receive a fourth message sent by the first access network device, where the fourth message is used to instruct the first access network device to reject the terminal device request to be online The value of the reason for signing NPN.
  • each module can also refer to the corresponding description of the method embodiments shown in FIG. 3 to FIG. 10 to execute the methods and functions performed by the terminal device in the foregoing embodiments.
  • FIG. 13 is a schematic diagram of another communication device provided by an embodiment of the present application.
  • the communication device at least includes a receiving module 1301, a sending module 1302, and a processing module 1303, wherein:
  • the receiving module 1301 is configured to receive a first message sent by a first access network device, where the first message is used to instruct the terminal device to request online NPN subscription;
  • the sending module 1302 is configured to send a second message to the first access network device, where the second message is used to indicate that the terminal device successfully signs an NPN online.
  • the processing module 1303 is configured to verify whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, it is determined that the terminal device requests online subscription for the NPN supported by the first cell NPN.
  • the processing module 1303 is configured to verify whether the first network is a subscribed network; if not, determine the NPN corresponding to the information of the identification of the first network that the terminal device requests to subscribe online.
  • the sending module 1302 is further configured to send a third message to the first access network device, where the third message is used to indicate that the core network device supports an NPN for online subscription.
  • each module can also correspond to the corresponding description of the method embodiments shown in FIG. 3 to FIG. 10 to execute the methods and functions performed by the core network device in the foregoing embodiments.
  • FIG. 14 is a schematic structural diagram of a first access network device according to an embodiment of the present application.
  • the first access network device may include: at least one processor 1401, at least one communication interface 1402, and at least one memory 1403.
  • the first access network device may further include at least one communication bus 1404.
  • the processor 1401 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on.
  • the communication bus 1404 may be a standard PCI bus for interconnecting peripheral components or an extended industry standard structure EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and so on.
  • the communication bus 1404 is used to implement connection and communication between these components.
  • the communication interface 1402 of the device in the embodiment of the present application is used for signaling or data communication with other node devices.
  • the memory 1403 may include volatile memory, such as nonvolatile random access memory (NVRAM), phase change RAM (PRAM), magnetoresistive random access memory (magetoresistive) RAM, MRAM), etc., may also include non-volatile memory, such as at least one disk storage device, electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), flash memory devices, such as reverse or flash memory (NOR flash memory) or reverse flash memory (NAND flash memory), semiconductor devices, such as solid state disks (SSD), etc.
  • the memory 1403 may also be at least one storage device located far away from the foregoing processor 1401.
  • the memory 1403 may also store a group of program codes.
  • the processor 1401 may also execute a program stored in the memory 1403.
  • processor 1401 is further configured to perform the following operations:
  • the terminal device It is verified whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, it is determined that the terminal device requests an online subscription for an NPN supported by the first cell.
  • processor 1401 is further configured to perform the following operations:
  • the second network is a subscribed network; if not, it is determined that the terminal device requests an online subscription to the NPN corresponding to the information of the identifier of the second network.
  • processor 1401 is further configured to perform the following operations:
  • a third message is sent to the terminal device, where the third message is used to indicate that the terminal device successfully signs an NPN online.
  • processor 1401 is further configured to perform the following operations:
  • a fourth message is sent to the terminal device, where the fourth message is used to indicate a reason value for the first access network device to reject the terminal device's request for online subscription of NPN.
  • processor 1401 is further configured to perform the following operations:
  • a fifth message sent by a core network device is received, where the fifth message is used to indicate a reason value for the core network device to reject the terminal device's request for online subscription of an NPN.
  • processor 1401 is further configured to perform the following operations:
  • a seventh message sent by the core network device is received, where the seventh message is used to indicate that the terminal device successfully signs online for NPN or indicates that the terminal device fails to sign online.
  • processor 1401 is further configured to perform the following operations:
  • An eighth message sent by a core network device is received, where the eighth message is used to indicate that the core network device supports an NPN for online subscription.
  • processor 1401 is further configured to perform the following operations:
  • the processor may also cooperate with the memory and the communication interface to perform the operation of the first access network device in the above application embodiment.
  • FIG. 15 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device may include: at least one processor 1501, at least one communication interface 1502, and at least one memory 1503.
  • the terminal device may further include at least one communication bus 1504.
  • the processor 1501 may be various types of processors mentioned above.
  • the communication bus 1504 may be a standard PCI bus for interconnecting peripheral components or an extended industry standard structure EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 15 to represent it, but it does not mean that there is only one bus or one type of bus.
  • the communication bus 1504 is used to implement connection and communication between these components. Among them, the communication interface 1502 of the device in the embodiment of the present application is used for signaling or data communication with other node devices.
  • the memory 1503 may be various types of memories mentioned above. Optionally, the memory 1503 may also be at least one storage device located far away from the foregoing processor 1501.
  • the memory 1503 stores a set of program codes, and the processor 1501 executes the programs in the memory 1503.
  • processor 1501 is further configured to perform the following operations:
  • processor 1501 is further configured to perform the following operations:
  • a fourth message sent by the first access network device is received, where the fourth message is used to indicate a reason value for the first access network device to reject the terminal device's request for online NPN subscription.
  • the processor may also cooperate with the memory and the communication interface to perform the operation of the terminal device in the above-mentioned application embodiment.
  • FIG. 16 is a schematic structural diagram of a core network device according to an embodiment of the present application.
  • the core network device may include: at least one processor 1601, at least one communication interface 1602, and at least one memory 1603.
  • the core network device may further include at least one communication bus 1604.
  • the processor 1601 may be various types of processors mentioned above.
  • the communication bus 1604 may be a standard PCI bus for interconnecting peripheral components or an extended industry standard structure EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 16, but it does not mean that there is only one bus or one type of bus.
  • the communication bus 1604 is used to implement connection and communication between these components. Among them, the communication interface 1602 of the device in the embodiment of the present application is used for signaling or data communication with other node devices.
  • the memory 1603 may be various types of memories mentioned above. Optionally, the memory 1603 may also be at least one storage device located far away from the foregoing processor 1601.
  • the memory 1603 stores a set of program codes, and the processor 1601 executes the programs in the memory 1603.
  • processor 1601 is further configured to perform the following operations:
  • the terminal device It is verified whether the terminal device has subscribed to at least one NPN supported by the first cell; if not, it is determined that the terminal device requests an online subscription for an NPN supported by the first cell.
  • processor 1601 is further configured to perform the following operations:
  • the terminal device It is verified whether the first network is a subscribed network; if not, it is determined that the terminal device requests an online subscription to the NPN corresponding to the information of the identity of the first network.
  • processor 1601 is further configured to perform the following operations:
  • a third message is sent to the first access network device, where the third message is used to indicate that the core network device supports an NPN for online subscription.
  • processor may also cooperate with the memory and the communication interface to perform the operation of the core network device in the above-mentioned application embodiment.
  • An embodiment of the present application also provides a chip system, which includes a processor for supporting a first access network device, a terminal device, or a core network device to implement the functions involved in any of the foregoing embodiments, such as generating Or process the data and/or information involved in the above methods.
  • the chip system may further include a memory, and the memory is used for program instructions and data necessary for the first access network device, the terminal device, or the core network device.
  • the chip system can be composed of chips, or include chips and other discrete devices.
  • the embodiments of the present application also provide a processor, which is configured to be coupled with a memory, and is used to execute any method and function related to the first access network device, terminal device, or core network device in any of the foregoing embodiments. .
  • the embodiments of the present application also provide a computer program product containing instructions, which when running on a computer, causes the computer to execute any of the above embodiments.
  • the first access network device, terminal device, or core network Any method and function of the device.
  • the embodiments of the present application also provide a device for executing any method and function related to the first access network device, terminal device, or core network device in any of the foregoing embodiments.
  • An embodiment of the present application also provides a wireless communication system, which includes at least one access network device, at least one terminal device, and at least one core network device involved in any of the foregoing embodiments.
  • the computer may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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Abstract

本申请实施例提供了一种通信方法及相关设备，包括：第一接入网设备向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；第一接入网设备接收所述终端设备发送的第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。采用本申请，可以提高通信效率。

Description

一种通信方法及相关设备 技术领域
本申请涉及网络技术领域，尤其涉及一种通信方法及相关设备。
背景技术
非公网络(non-public networks，NPN)是第三代合作伙伴计划(3rd generation partnership project，3GPP)标准中正在讨论的一种网络，区别于传统蜂窝网络，NPN网络只允许某些具有特定权限的用户接入。现有标准中，终端设备无法接入非签约的NPN网络，影响通信效率。
发明内容
本申请提供了一种通信方法及相关设备，以期提高通信效率。
第一方面，本申请实施例提供了一种通信方法，包括：第一接入网设备向终端设备发送第一消息，第一消息用于指示第一接入网设备下的小区支持在线签约NPN；接收终端设备发送的第二消息，第二消息用于指示终端设备请求在线签约NPN。通过接入网设备向终端设备指示支持在线签约的NPN，终端设备可以请求在线签约的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活接入非签约的NPN，提高了通信效率。
在一种可能的设计中，第一消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息或第一指示信息。第一网络的标识的信息为支持在线签约的NPN的标识的信息，第一指示信息用于指示支持在线签约。
在另一种可能的设计中，第一消息包括网络资源的信息，网络资源是用于终端设备请求在线签约NPN的资源。
在另一种可能的设计中，第二消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第二网络的标识的信息或第二指示信息。第二网络的标识的信息为请求在线签约的NPN的标识的信息，第二指示信息用于指示请求在线签约。
在另一种可能的设计中，第二网络的标识的信息可以和第一网络的标识的信息相同，第一指示信息也可以和第二指示信息相同。
在另一种可能的设计中，第二消息包括第二网络的标识的信息和第三网络的标识的信息，第二网络是请求在线签约的网络，第三网络是已签约的网络。从而不仅可以实现随机接入小区，而且实现在线签约。
在另一种可能的设计中，第二消息用于请求接入第一接入网设备下的第一小区，第一接入网设备验证终端设备是否已签约第一小区所支持的至少一个NPN；若否，则第一接入网设备确定终端设备请求在线签约第一小区所支持的NPN。
在另一种可能的设计中，终端设备通过所述第一消息指示的网络资源向第一接入网设 备发送第二消息，所述第一接入网设备基于第二消息所在的网络资源确定终端设备请求在线签约的NPN。可选的，所述第二消息用于终端设备请求接入第一接入网设备下的第一小区。
在另一种可能的设计中，第二消息包括第二网络的标识的信息，第一接入网设备验证第二网络是否为已签约的网络；若否，则第一接入网设备确定终端设备请求在线签约第二网络的标识的信息所对应的NPN。
在另一种可能的设计中，第一接入网设备向终端设备发送第三消息，第三消息用于指示终端设备在线签约NPN成功。
在另一种可能的设计中，第三消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第三指示信息。第四网络的标识的信息为在线签约成功的NPN的标识的信息，第三指示信息用于指示在线签约成功。
在另一种可能的设计中，第一接入网设备向终端设备发送第四消息，第四消息用于指示第一接入网设备拒绝终端设备请求在线签约NPN的原因值。
在另一种可能的设计中，第一接入网设备接收核心网设备发送的第五消息，第五消息用于指示核心网设备拒绝终端设备请求在线签约NPN的原因值。
在另一种可能的设计中，第一接入网设备向核心网设备发送第六消息，第六消息用于指示终端设备请求在线签约NPN；第一接入网设备接收核心网设备发送的第七消息，第七消息用于指示终端设备在线签约NPN成功或指示终端设备在线签约失败。
在另一种可能的设计中，第六消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第五网络的标识的信息或第四指示信息。第五网络的标识的信息为请求在线签约的NPN的标识的信息，第四指示信息用于指示请求在线签约。
在另一种可能的设计中，第七消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第六网络的标识的信息或第五指示信息。第六网络的标识的信息为在线签约成功的NPN的标识的信息，第五指示信息用于指示在线签约成功。
在另一种可能的设计中，第五网络的标识的信息可以与第六网络的标识的信息相同，第四指示信息也可以和第五指示信息相同。
在另一种可能的设计中，第七消息包括第五指示信息，第五指示信息用于指示终端设备是否具有在线签约的能力。防止终端设备后续恶意的在线签约，避免终端设备持续的发起在线签约请求等。
在另一种可能的设计中，第一接入网设备接收核心网设备发送的第八消息，第八消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：第七网络的标识的信息或第七指示信息。第七网络的标识的信息为支持在线签约的NPN的标识的信息，第七指示信息用于指示支持在线签约。
在另一种可能的设计中，第一接入网设备向核心网设备发送第九消息，第九消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以 下至少一项：第八网络的标识的信息或第八指示信息。第八网络的标识的信息为支持在线签约的NPN的标识的信息，第七指示信息用于指示支持在线签约。
在另一种可能的设计中，第一接入网设备包括第一分布式单元，第一分布式单元向终端设备发送第一消息，第一消息用于指示第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN；第一分布式单元接收终端设备发送的第二消息，第二消息用于指示终端设备请求在线签约NPN。
在另一种可能的设计中，第一消息可以包括N3IWF实体的地址信息，地址信息用于指示终端设备通过N3IWF实体向核心网设备请求在线签约NPN。终端设备可以根据N3IWF实体的地址信息建立IPsec隧道，通过建立的IPsec隧道向核心网设备请求在线签约NPN。终端设备通过建立IPsec隧道实现在线签约NPN，减少信令开销。可选的，上述N3IWF实体也可以为其他实体，例如，第三方服务器(service provider)等。
在另一种可能的设计中，第一接入网设备接收第二接入网设备发送的第十消息，第十消息用于指示第二接入网设备下的小区所支持的在线签约的NPN和/或第二接入网设备下的小区的邻小区所支持的在线签约的NPN。所述第二接入网设备下的小区的邻小区可以部署在第二接入网设备下，也可以部署在其他接入网设备下。
在另一种可能的设计中，第一消息还用于指示第二接入网设备下的小区所支持的在线签约的NPN。
在另一种可能的设计中，第一消息包括第六指示信息，第六指示信息用于指示终端设备所在小区是否支持协助第二小区在线签约NPN。可选的，所述第二小区为所述终端设备所在小区的邻小区。实现终端设备在一个小区下在线签约多个小区所支持的NPN，从而减少终端设备与第一接入网设备之间在线签约NPN的信令开销。
在另一种可能的设计中，第一网络的标识的信息包括以下至少一项：公共陆地移动网络标识PLMN ID、网络标识NID、封闭访问组标识CAG ID或用户可读网络标识HRNN。
第二方面，本申请实施例提供了一种通信方法，包括：终端设备接收第一接入网设备发送的第一消息，第一消息用于指示第一接入网设备下的小区支持在线签约NPN；向第一接入网设备发送第二消息，第二消息用于指示终端设备请求在线签约NPN。通过接入网设备向终端设备指示支持在线签约的NPN，终端设备可以请求在线签约的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活接入非签约的NPN，提高了通信效率。
在另一种可能的设计中，第一消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息或第一指示信息。第一网络的标识的信息为支持在线签约的NPN的标识的信息，第一指示信息用于指示支持在线签约。
在另一种可能的设计中，第一消息包括网络资源的信息，网络资源是用于终端设备请求在线签约NPN的资源。
在另一种可能的设计中，第二消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第二网络的标识的信息或第二指示信息。第二网络的标识的信息为请求在线签约的NPN的标识的信息，第二指示信息用于 指示请求在线签约。
在另一种可能的设计中，第二消息包括第二网络的标识的信息和第三网络的标识的信息，第二网络是请求在线签约的网络，第三网络是已签约的网络。从而不仅可以实现随机接入小区，而且实现在线签约。
在另一种可能的设计中，终端设备接收第一接入网设备发送的第三消息，第三消息用于指示终端设备在线签约NPN成功。
在另一种可能的设计中，第三消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第三指示信息。第四网络的标识的信息为在线签约成功的NPN的标识的信息，第三指示信息用于指示在线签约成功。
在另一种可能的设计中，终端设备接收第一接入网设备向发送的第四消息，第四消息用于指示第一接入网设备拒绝终端设备请求在线签约NPN的原因值。
第三方面，本申请实施例提供了一种通信方法，包括：核心网设备接收第一接入网设备发送的第一消息，第一消息用于指示终端设备请求在线签约NPN；向第一接入网设备发送第二消息，第二消息用于指示终端设备在线签约NPN成功。通过第一接入网设备向核心网设备指示请求在线签约的NPN，核心网设备可以指示终端设备在线签约NPN成功的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活接入非签约的NPN，提高了通信效率。
在另一种可能的设计中，第一消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息或第一指示信息。
在另一种可能的设计中，第一消息用于向核心网设备转发层三消息，核心网设备验证终端设备是否已签约第一小区所支持的至少一个NPN；若否，则核心网设备确定终端设备请求在线签约第一小区所支持的NPN。所述第一小区为所述终端设备驻留或者接入的小区。
在另一种可能的设计中，第一消息包括第一网络的标识的信息，核心网设备验证第一网络是否为已签约的网络；若否，则核心网设备确定终端设备请求在线签约第一网络的标识的信息所对应的NPN。
在另一种可能的设计中，第一消息包括用于指示第一接入网设备下的第一小区支持在线签约的NPN的信息，所述用于指示第一接入网设备下的第一小区支持在线签约的NPN的信息包括以下至少一项：第三网络的标识的信息或第三指示信息。
在另一种可能的设计中，第二消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第二网络的标识的信息或第二指示信息。
在另一种可能的设计中，核心网设备向第一接入网设备发送第三消息，第三消息用于指示核心网设备支持在线签约的NPN。
在另一种可能的设计中，核心网设备接收第一接入网设备发送的第四消息，第四消息用于指示第一接入网设备支持在线签约的NPN。
第四方面，本申请实施例提供了一种通信方法，包括：第一分布式单元向终端设备发送第一消息，第一消息用于指示第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN；接收终端设备发送的第二消息，第二消息用于指示终端设备请求在线签约NPN。通过第一分布式单元向终端设备指示在线签约的NPN，终端设备可以请求在线签约的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活的接入非签约的NPN，提高了通信效率。
在一种可能的设计中，第一消息用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息和第一指示信息。第一网络的标识的信息为支持在线签约的NPN的标识的信息，第一指示信息用于指示支持在线签约。
在另一种可能的设计中，第一消息包括第二指示信息，第二指示信息用于指示终端设备所在小区是否支持协助第二小区在线签约NPN。可选的，所述第二小区为所述终端设备所在小区的邻小区。实现终端设备在一个小区下在线签约多个小区所支持的NPN，从而减少终端设备与第一接入网设备之间在线签约NPN的信令开销。
在另一种可能的设计中，第一消息包括网络资源的信息，网络资源是用于终端设备请求在线签约NPN的资源。
在另一种可能的设计中，第二消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第二网络的标识的信息或第三指示信息。第二网络的标识的信息为请求在线签约的NPN的标识的信息，第三指示信息用于指示请求在线签约。
在另一种可能的设计中，第二消息包括第二网络的标识的信息和第三网络的标识的信息，第二网络是请求在线签约的网络，第三网络是已签约的网络。从而不仅可以实现随机接入小区，而且实现在线签约。
在另一种可能的设计中，第二消息用于请求接入第一分布式单元下的第一小区，第一分布式单元验证终端设备是否已签约第一小区所支持的至少一个NPN；若否，则第一分布式单元确定终端设备请求在线签约第一小区所支持的NPN。
在另一种可能的设计中，第二消息包括第二网络的标识的信息，第一分布式单元验证第二网络是否为已签约的网络；若否，则第一分布式单元确定终端设备请求在线签约第二网络的标识的信息所对应的NPN。
在另一种可能的设计中，终端设备通过所述第一消息指示的网络资源向第一分布式单元发送第二消息，第一分布式基于第二消息所在的网络资源确定终端设备请求在线签约的NPN。可选的，所述第二消息用于终端设备请求接入第一分布式单元下的第一小区。
在另一种可能的设计中，第一分布式单元向终端设备发送第三消息，第三消息用于指示终端设备在线签约NPN成功。
在另一种可能的设计中，第三消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第四指示信息。第四网络的标识的信息为在线签约成功的NPN的标识的信息，第四指示信息用于指示在线签约成功。
在另一种可能的设计中，第一分布式单元向终端设备发送第四消息，第四消息用于指示第一分布式单元拒绝终端设备请求在线签约NPN的原因值。
在另一种可能的设计中，第一分布式单元接收中心单元发送的第五消息，第五消息用于指示中心单元拒绝终端设备请求在线签约NPN的原因值。
在另一种可能的设计中，第一分布式单元向中心单元发送第六消息，第六消息包括用于指示终端设备请求在线签约的NPN的信息，所述用于指示终端设备请求在线签约的NPN的信息包括以下至少一项：第六网络的标识的信息或第七指示信息。
在另一种可能的设计中，第六消息包括第七网络的标识的信息和第八网络的标识的信息，第七网络是请求在线签约的网络，第八网络是已签约的网络。从而不仅可以实现随机接入小区，而且实现在线签约。
在另一种可能的设计中，第六消息用于向中心单元发送层三消息，中心单元验证终端设备是否已签约第一小区所支持的至少一个NPN；若否，则中心单元确定终端设备请求在线签约第一小区所支持的NPN。可选的，所述第一小区为所述终端设备驻留或者接入的小区。
在另一种可能的设计中，第六消息包括第九网络的标识的信息，中心单元验证第九网络是否为已签约的网络；若否，则中心单元确定终端设备请求在线签约第九网络的标识的信息所对应的NPN。
在另一种可能的设计中，第一分布式单元通过用于在线签约NPN的网络资源向中心单元发送第六消息，所述中心单元基于所述网络资源确定终端设备请求在线签约的NPN。
在另一种可能的设计中，第一分布式单元接收中心单元发送的第七消息，第七消息用于指示终端设备在线签约NPN成功或指示终端设备在线签约失败。
在另一种可能的设计中，第七消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息以下至少一项：第五网络的标识的信息或第五指示信息。
在另一种可能的设计中，第七消息包括第六指示信息，第六指示信息用于指示终端设备是否具有在线签约的能力。防止终端设备后续恶意的在线签约，避免终端设备持续的发起在线签约请求。
在另一种可能的设计中，第一分布式单元接收中心单元发送的第八消息，第八消息包括用于指示中心单元支持在线签约的NPN的信息和/或第二分布式单元支持在线签约的NPN的信息。
在另一种可能的设计中，第一分布式单元向中心单元发送第九消息，第九消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第十网络的标识的信息或第八指示信息。
在另一种可能的设计中，第一网络的标识的信息包括以下至少一项：公共陆地移动网络标识PLMN ID、网络标识NID、封闭访问组标识CAG ID或用户可读网络标识HRNN。
第五方面，本申请实施例提供了一种通信方法，包括：终端设备接收第一分布式单元发送的第一消息，第一消息用于指示第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN；向第一分布式单元发送第二消息，第二消息用于指示终端设备请求在线签约NPN。通过第一分布式单元向终端设备指示支持在线签 约的NPN，终端设备可以请求在线签约的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活的接入非签约的NPN，提高了通信效率。
在另一种可能的设计中，第一消息用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息和第一指示信息。
在另一种可能的设计中，第一消息包括第二指示信息，第二指示信息用于指示终端设备所在小区是否支持协助第二小区在线签约NPN。可选的，所述第二小区为所述终端设备所在小区的邻小区。
在另一种可能的设计中，第一消息包括网络资源的信息，网络资源是用于终端设备请求在线签约NPN的资源。
在另一种可能的设计中，第二消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第二网络的标识的信息或第三指示信息。
在另一种可能的设计中，第二消息包括第二网络的标识的信息和第三网络的标识的信息，第二网络是请求在线签约的网络，第三网络是已签约的网络。
在另一种可能的设计中，终端设备通过所述第一消息指示的网络资源向第一分布式单元发送第二消息，第一分布式基于第二消息所在的网络资源确定终端设备请求在线签约的NPN。可选的，所述第二消息用于终端设备请求接入第一分布式单元下的第一小区。
在另一种可能的设计中，终端设备接收第一分布式单元发送的第三消息，第三消息用于指示终端设备在线签约NPN成功。
在另一种可能的设计中，第三消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第四指示信息。
在另一种可能的设计中，终端设备接收第一分布式单元发送的第四消息，第四消息用于指示第一分布式单元拒绝终端设备请求在线签约NPN的原因值。
第六方面，本申请实施例提供了一种通信方法，包括：中心单元接收第二分布式单元发送的第一消息，第一消息用于指示第二分布式单元支持在线签约NPN；向第一分布式单元发送第二消息，第二消息用于指示中心单元支持在线签约NPN。通过向第一分布式单元指示第二分布式单元支持在线签约的NPN，使得第一分布式单元可以协助第二分布式单元下的小区进行在线签约，从而节省信令开销。
在一种可能的设计中，第一消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN包括以下至少一项：第一网络的标识的信息或第一指示信息。
在另一种可能的设计中，第二消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN信息包括以下至少一项：第二网络的标识的信息或第二指示信息。
在另一种可能的设计中，中心单元接收第一分布式单元发送第三消息，第三消息用于指示终端设备请求在线签约NPN；向第一分布式单元发送第四消息，第四消息用于指示终端设备在线签约NPN成功。
在另一种可能的设计中，第三消息包括用于指示请求在线签约的NPN的信息，用于 指示请求在线签约的NPN的信息包括以下至少一项：第三网络的标识的信息或第三指示信息。
在另一种可能的设计中，第四消息包括的信息用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第四指示信息。
在另一种可能的设计中，中心单元向第一分布式单元发送第五消息，第五消息用于指示中心单元拒绝终端设备请求在线签约NPN的原因值。
在另一种可能的设计中，中心单元向核心网设备发送第六消息，第六消息用于指示终端设备请求在线签约的NPN。中心单元接收核心网设备发送的第七消息，第七消息用于指示终端设备在线签约NPN成功或指示终端设备在线签约失败。
在另一种可能的设计中，第六消息包括用于指示请求在线签约的NPN的信息，用于指示请求在线签约的NPN的信息包括以下至少一项：第五网络的标识的信息或第五指示信息。
在另一种可能的设计中，第七消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN的信息包括以下至少一项：第六网络的标识的信息或第六指示信息。
在另一种可能的设计中，第七消息包括第七指示信息，第七指示信息用于指示终端设备是否具有在线签约的能力。防止终端设备后续恶意的在线签约，避免终端设备持续的发起在线签约请求。
第七方面，本申请实施例提供了一种通信方法，包括：核心网设备接收中心单元发送的第一消息，第一消息用于指示终端设备请求在线签约NPN；向中心单元发送第二消息，第二消息用于指示终端设备在线签约NPN成功。通过中心单元向核心网设备指示请求在线签约的NPN，核心网设备指示终端设备在线签约成功的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活的接入非签约的NPN，提高了通信效率。
在一种可能的设计中，第一消息包括用于指示支持在线签约的NPN的信息，用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息或第一指示信息。
在另一种可能的设计中，第一消息用于向核心网设备转发层三消息，核心网设备验证终端设备是否已签约第一小区所支持的至少一个NPN；若否，则核心网设备确定终端设备请求在线签约第一小区所支持的NPN。所述第一小区为所述终端设备驻留或者接入的小区。
在另一种可能的设计中，第一消息包括第一网络的标识的信息，核心网设备验证第一网络是否为已签约的网络；若否，则核心网设备确定终端设备请求在线签约第一网络的标识的信息所对应的NPN。
在另一种可能的设计中，第二消息包括用于指示在线签约成功的NPN的信息，用于指示在线签约成功的NPN包括以下至少一项：第二网络的标识的信息或第二指示信息。
在另一种可能的设计中，核心网设备向中心单元发送第三消息，第三消息用于指示核 心网设备支持在线签约NPN。
第八方面，本申请实施例提供了一种通信装置，该通信装置被配置为实现上述任一方面所执行的方法和功能，由硬件/软件实现，其硬件/软件包括与上述功能相应的模块。
第九方面，本申请实施例提供了一种第一接入网设备，包括：处理器、存储器和通信总线，其中，通信总线用于实现处理器和存储器之间连接通信，处理器执行存储器中存储的程序用于实现上述第一方面提供的一种通信方法中的步骤。
第十方面，本申请实施例提供了一种终端设备，包括：处理器、存储器和通信总线，其中，通信总线用于实现处理器和存储器之间连接通信，处理器执行存储器中存储的程序用于实现上述第二方面和第五方面提供的一种通信方法中的步骤。
第十一方面，本申请实施例提供了一种核心网设备，包括：处理器、存储器和通信总线，其中，通信总线用于实现处理器和存储器之间连接通信，处理器执行存储器中存储的程序用于实现上述第三方面和第七方面提供的一种通信方法中的步骤。
第十二方面，本申请实施例提供了一种第一分布式单元，包括：处理器、存储器和通信总线，其中，通信总线用于实现处理器和存储器之间连接通信，处理器执行存储器中存储的程序用于实现上述第四方面提供的一种通信方法中的步骤。
第十三方面，本申请实施例提供了一种中心单元，包括：处理器、存储器和通信总线，其中，通信总线用于实现处理器和存储器之间连接通信，处理器执行存储器中存储的程序用于实现上述第六方面提供的一种通信方法中的步骤。
第十四方面，本申请提供了一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面的方法。
第十五方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面的方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请实施例提供的一种SNPN的示意图；
图2是本申请实施例提供的一种非独立组网的NPN的示意图；
图3是本申请实施例提供的一种通信方法的流程示意图；
图4是本申请实施例提供的一种在线签约SNPN的示意图；
图5是本申请实施例提供的另一种通信方法的流程示意图；
图6是本申请实施例提供的另一种通信方法的流程示意图；
图7是本申请实施例提供的另一种通信方法的流程示意图；
图8是本申请实施例提供的另一种通信方法的流程示意图；
图9是本申请实施例提供的另一种通信方法的流程示意图；
图10是本申请实施例提供的另一种通信方法的流程示意图；
图11是本申请实施例提供的一种通信装置的示意图；
图12是本申请实施例提供的另一种通信装置的示意图；
图13是本申请实施例提供的另一种通信装置的示意图；
图14是本申请实施例提出的一种第一接入网设备的结构示意图；
图15是本申请实施例提出的一种终端设备的结构示意图；
图16是本申请实施例提出的一种核心网设备的结构示意图。
具体实施方式
下面结合本申请实施例中的附图对本申请实施例进行描述。
3GPP定义了两种NPN部署模式：独立组网(stand-alone non-public networks,SNPN)和非独立组网(non-stand-alone NPN)。
如图1所示，图1是本申请实施例提供的一种SNPN的示意图。公用陆地移动网络(public land mobile network，PLMN)包括数据网络(data network，DN)、PLMN用户面管理功能(user plane function，UPF)实体、PLMN接入和移动性管理功能(access and mobility management function，AMF)实体、非3GPP网间互通功能(Non-3GPP interworking function，N3IWF)网元和PLMN无线接入网设备(radio access network，RAN)等网元。SNPN包括NPN-UPF实体、NPN-AMF实体、DN和NPN-RAN等网元。SNPN和PLMN拥有独立的核心网，SNPN和PLMN的核心网之间通过N3IWF网元相连，通过N3IWF网元可以实现用户面和控制面互通。SNPN可以通过PLMN ID(identifier)和网络标识(network identifier,NID)进行标识。ID可以是全球统一分配或本地分配的。
一个SNPN的RAN下的小区广播的参数可以包括以下至少一项：一个或多个PLMN ID、每个PLMN ID对应的一个或多个NID、用户可读网络名称(human-readable network name，HRNN)、支持用户手动选网指示、或禁止其他不支持SNPN的用户终端(user equipment，UE)接入的指示。当UE在SNPN注册并建立协议数据单元(protocol data unit，PDU)会话之后，UE可以通过SNPN中PDU会话的用户面建立网络协议安全性(internet protocol security，IPSec)隧道，进而连接到PLMN的N3IWF，并通过该IPSec隧道注册到PLMN中。反之亦然。该互通方式采用了UE通过非可信非3GPP接入5G核心网(5G Core)的架构和机制。
如图2所示，图2是本申请实施例提供的一种非独立组网的NPN的示意图。非独立组网的NPN也称为公共网络集成的NPN(public network integrated NPN，PNI-NPN)。NPN和PLMN可以共用核心网(例如AMF、UPF等)，PLMN可以部署PLMN-RAN、且NPN可以部署PNI-NPN-RAN，PLMN-RAN和PNI-NPN-RAN之间可以通过Xn接口进行连接。可选的，PLMN和PNI-NPN也可以共用一个RAN。其中，NPN依赖于PLMN进行部署，可以使用PLMN ID对PNI-NPN网络进行标识。NPN可以是PLMN中的一个特定切片，UE拥有PLMN的签约数据，根据移动运营商与NPN服务商的协议，该NPN可以仅仅部署在某些跟踪区域(tracing area，TA)的范围内。当UE移出TA范围时，可以指示UE不能在新的注册区域继续使用当前的切片资源。为了防止非授权的UE接入PNI-NPN所在小区，标准协议定义了封闭访问组(closed access group，CAG)，CAG通过封闭访问组标识(closed access group identifier,CAG ID)进行标识。一个CAG对应一组可以接入某个CAG小区(PNI-NPN小区)的用户。
在非独立组网中，PNI-NPN可以是在公网的支持下部署的，PNI-NPN的小区不仅需要广播小区标识，还需要广播CAG ID。CAG ID用于标识允许接入该CAG关联的一个或多个小区的一组用户。一个PNI-NPN小区可以广播一个或多个CAG ID，还可以广播CAG ID对应的HRNN，以便提供给用户手动选择。为了便于描述，可以将PLMN ID、CAG ID、或HRNN中的至少一个统称为PNI-NPN的标识的信息。
可以看出，SNPN和PNI-NPN小区只允许拥有权限的用户接入。对于PNI-NPN网络，PNI-NPN小区会在系统信息中广播其所支持接入的PNI-NPN的标识的信息，终端设备本地存储其订阅的PNI-NPN的标识的信息，终端设备在接收到小区广播的系统信息之后，比较小区所支持接入的PNI-NPN的标识的信息和本地存储的订阅的PNI-NPN的标识的信息，若存在允许接入的PNI-NPN，则终端设备可以接入相应小区。终端设备可以通过非接入层(non-access stratum，NAS)或接入层(access stratum，AS)信息将选择接入的PNI-NPN的标识的信息上报给RAN或者AMF。AMF也会存储终端设备的签约信息，例如存储终端设备的被允许接入的CAG列表(allowed CAG list)，AMF基于存储的终端设备的签约信息，决定是否允许终端接入。例如，如果终端设备上报的选择接入的网络的标识信息CAG ID没有在AMF处存储的终端设备允许接入的CAG列表中，则AMF拒绝终端设备的接入。如果终端设备上报的选择接入的小区所支持接入的CAG ID没有存在于AMF存储的终端设备允许接入的CAG列表中，则AMF拒绝终端设备的接入。
对于SNPN网络，终端设备和AMF也会存储终端设备的签约信息，SNPN的小区也会广播其所支持接入的SNPN的标识的信息。终端设备选择接入小区以及AMF确定是否允许终端设备接入。执行过程与上述PNI-NPN相似，此处不再赘述。
综上所述，NPN的签约信息存储在终端设备本地和AMF处，只有终端设备选择接入的网络在签约信息中，终端设备才能成功接入。在现有标准中，终端设备无法接入非签约的NPN，影响通信效率。
请参见图3，图3是本申请实施例提供的一种通信方法的流程示意图，该方法包括但不限于如下步骤：
S301，第一接入网设备向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN。其中，第一接入网设备可以为下一代无线接入网(next generation radio access network，NG RAN)设备。
具体实现中，第一接入网设备可以通过主信息块(master information block，MIB)、系统信息块(system information block，SIB)、无线资源控制(radio resource control，RRC)信令、媒体接入控制层(media access control，MAC)控制单元(control element，CE)、NAS信息、下行控制信息(downlink control information,DCI)或者用户面数据信息向终端设备发送第一消息。
其中，所述第一消息包括用于指示支持在线签约的NPN的信息。所述用于指示支持在线签约的NPN的信息包括以下至少一项：第一网络的标识的信息或第一指示信息。第一指示信息可以用于指示NPN信息所对应的NPN支持或不支持进行在线签约或者指示第一接入网设备下的小区广播的NPN支持或不支持在线签约。例如，第一网络的标识的信息表示第一网络的标识的信息对应的NPN支持在线签约。在第一消息包括第一指示信息 的情况下，第一指示信息可以用于指示小区所广播的NPN信息所对应的NPN全部支持在线签约。第一消息也可以包括第一网络的标识的信息和第一指示信息。可选的，一个或多个标识对应一个第一指示信息，第一指示信息用于指示该一个或多个标识对应的NPN是否支持在线签约。其中，第一网络的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。第一网络是支持在线签约的NPN。
可选的，小区支持的在线签约的NPN可以与小区支持的NPN不同，小区支持的在线签约的NPN可以是或不是小区支持的NPN。所述小区支持的NPN，允许终端设备进行传统的接入和访问，可为终端设备提供正常的NPN服务，所述小区支持的在线签约的NPN可能不能为终端设备提供正常的NPN服务。例如，小区支持的NPN可以为NPN#1和NPN#2，而小区支持的在线签约的NPN可以为NPN#1和NPN#2，或者为NPN#2和NPN#3，或者为NPN#3和NPN#4，或者为NPN#1、或者为NPN#2。相应的NPN只支持在线签约时，例如上述的NPN#3、NPN#4，终端设备能够通过该小区签约该NPN，但不能够通过该小区得到正常的NPN服务，终端设备通过该小区在线签约成功之后可能需要重新选择到其他小区以得到相应的正常的NPN服务。例如，在小区系统信息中可以广播每个PLMN ID所支持的CAG ID#1和/或NID#1，和/或广播该PLMN ID所支持的在线签约的CAG ID#2和/或NID#2。例如，在CAG或NID小区的系统信息中可以广播该小区所支持的CAG ID#1或NID#1，和/或广播该小区所支持的在线签约的CAG ID#2和/或NID#2。小区支持的在线签约的NPN可以只用于或不只用于在线签约NPN。可选的，在小区的SIB1系统信息中广播上述信息，例如，在SIB1的小区接入相关信息(cellAccessRelatedInfo)、PLMN标识信息列表(PLMN-IdentityInfoList)、NPN标识信息列表(NPN-IdentityInfoList)、PLMN标识信息(PLMN-IdentityInfo)、PNI-NPN标识信息(PNI-NPN-IdentityInfo)或SNPN标识信息(SNPN-IdentityInfo)信元中广播上述信息。
可选的，第一指示信息用于指示相应的NPN只支持或不只支持进行在线签约或者指示第一接入网设备下的小区广播的NPN只支持或不只支持在线签约。例如，第一指示信息用于指示相应的NPN只支持在线签约时，表示该接入网设备或小区只支持在线签约相应的NPN，但并不能为终端设备提供相应的正常的NPN服务，因此有相应NPN签约信息的终端设备不能接入该NPN小区得到正常的NPN服务，终端设备通过该小区签约成功之后需要重新选择到其他小区得到相应的正常的NPN服务。
可选的，第一消息所包括的支持在线签约的NPN的信息可由现有3GPP标准中规定的系统信息所广播的NPN的信息指示，也可以是进一步独立添加的NPN的信息。
所述第一消息还可以包括网络资源的信息，所述网络资源是用于所述终端设备请求在线签约NPN的资源。网络资源可以包括以下至少一种：随机接入信道(random access channel，RACH)、物理随机接入信道(physical random access channel，PRACH)、物理小区标识(physical Cell ID，PCI)或小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)等资源。网络资源可以是特定分配的或保留的。网络资源的粒度可以是小区，也可以是NPN。例如，以小区为粒度，在UE通过小区进行在线签约，通过特定分配的网络资源接入接入网设备和/或核心网设备时，接入网设备和/或核心网设备可以确定从该网络资源接入的UE是在请求在线签约。又如，以NPN为粒度，UE通过小区进 行在线签约某个NPN，通过特定分配的网络资源接入网络时，网络可以确定从该网络资源接入的UE是在请求在线签约该NPN。
可选的，所述第一消息中包括第一接入网设备所支持的不同网络可被访问的优先级信息，以使终端设备据此进行小区选择、小区重选、网络选择或接入等。例如，对于支持公网和/或NPN的第一接入网设备，在系统信息中广播第一接入网设备所支持的公网和/或NPN网络可被访问的优先级，或者不同NPN、SNPN、PNI-NPN、NID或CAG可被访问的优先级。再例如，对于只支持PNI-NPN的第一接入网设备，在系统信息中广播第一接入网设备所支持的不同CAG小区、或PNI-NPN小区可被访问的优先级。在第一接入网设备所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以使终端设备据此优先选择接入到某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区等。可选的，所述第一接入网设备所支持的不同网络可被访问的优先级信息可由OAM或者核心网设备为第一接入网设备进行辅助配置并发送给第一接入网设备，或者，由第一接入网设备自身配置。可选的，所述系统信息可以为SIB1。
可选的，第一接入网设备向终端设备发送第一消息之前，本申请实施例的步骤还可以包括：
S303，第一接入网设备向核心网设备发送第九消息，第九消息包括用于指示第一接入网设备支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：NPN的标识的信息或指示信息。其中，第九消息可以参考第八消息的说明，此处不再赘述。
可选的，第一接入网设备支持的在线签约的NPN可以与第一接入网设备支持的NPN不同。第一接入网设备支持的在线签约的NPN可以是第一接入网设备支持的NPN，也可以不是第一接入网设备支持的NPN。
可选的，第九消息可以为第八消息可以为NG接口建立请求(NG setup request)、RAN配置更新消息(RAN configuration update)，AMF配置更新确认消息(AMF configuration update acknowledge)等等。
可选的，所述第九消息中包括第一接入网设备所支持的不同网络可被访问的优先级信息，以使AMF据此进行接入控制和资源调度等。例如，对于支持公网和/或NPN的第一接入网设备，第九消息包括第一接入网设备所支持的公网和/或NPN网络可被访问的优先级，或者第一接入网设备所支持的不同NPN、SNPN、PNI-NPN、NID、或CAG可被访问的优先级。再例如，对于只支持PNI-NPN小区的第一接入网设备，第九消息中包括第一接入网设备接入不同CAG、或PNI-NPN的优先级。在第一接入网设备所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以指示AMF可优先调度某一个或者某一些CAG、PNI-NPN、公网和/或SNPN中的资源等。可选的，所述第一接入网设备所支持的不同网络可被访问的优先级信息可由OAM或者核心网设备为第一接入网设备进行辅助配置并发送给第一接入网设备，或者，由第一接入网设备自身配置。
可选的，第一接入网设备向终端设备发送第一消息之前，本申请实施例的步骤还可以包括：
S304，第一接入网设备接收核心网设备发送的第八消息。所述第八消息用于指示所述核心网设备支持在线签约的NPN。其中，核心网设备可以为AMF实体或者运行管理与维护(operation administration and maintenance，OAM)实体。
其中，第八消息可以为NG接口建立响应(NG setup response)、AMF配置更新消息(AMF configuration update)，RAN配置更新确认消息(RAN configuration update acknowledge)等等。第八消息包括用于指示核心网设备支持在线签约的NPN的信息，所述用于指示核心网设备支持在线签约的NPN的信息包括以下至少一项：NPN的标识的信息或指示信息。该指示信息可以用于指示核心网设备配置的相应的NPN是否支持在线签约或者指示小区广播的NPN是否支持在线签约。NPN的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。NPN的标识的信息和指示信息与步骤S301中的第一网络的标识的信息或第一指示信息的作用类似，此处不再赘述。
可选的，所述用于指示核心网设备支持在线签约的NPN的信息可以指示核心网下的某一个或者多个TA或PLMN所支持的在线签约的NPN的信息。
可选的，核心网设备可以通过第八消息将核心网设备所支持在线签约的NPN告知第一接入网设备，以便第一接入网设备后续接收到终端设备的在线签约NPN时进行核心网设备的选择或路由。
可选的，核心网设备支持的在线签约的NPN可以与核心网设备支持的NPN不同，核心网设备支持的在线签约的NPN可以是核心网设备支持的NPN，也可以不是核心网设备支持的NPN。例如，核心网设备可以协助支持某些NPN的其他核心网设备或者第三方服务器在线签约NPN。
可选的，所述第八消息中包括核心网设备所支持的不同网络可被访问的优先级信息，以使第一接入网设备据此进行接入控制和资源调度等。例如，对于支持公网和/或NPN的核心网设备，第八消息中包括核心网设备所支持的公网和/或NPN网络可被访问的优先级，或者核心网设备所支持的不同NPN、PNI-NPN、SNPN、NID或CAG可被访问的优先级。再例如，对于只支持PNI-NPN小区的核心网设备，第八消息中包括核心网设备所支持的不同CAG、或PNI-NPN可被访问的优先级。在核心网设备所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以使第一接入网设备据此优先调度某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区中的资源等。可选的，所述核心网设备所支持的不同网络可被访问的优先级信息可由OAM或者第一接入网设备为核心网设备进行辅助配置并发送给核心网设备，或者，由核心网设备自身配置。
可选的，在第一接入网设备接收核心网设备发送的第八消息之后，所述第一消息可以用于指示所述第一接入网设备下的小区支持在线签约NPN，也可以用于指示所述核心网设备支持的在线签约的NPN。
其中，第一接入网设备可以首先向核心网设备发送第九消息，核心网设备接收到第九消息之后，然后向第一接入网络设备发送第八消息。
可选的，第一接入网设备向终端设备发送第一消息之前，本申请实施例的步骤还可以包括：
S305，所述第一接入网设备接收第二接入网设备发送的第十消息，所述第十消息用于指示所述第二接入网设备下的小区所支持的在线签约的NPN。
其中，第十消息可以为Xn建立请求消息(Xn setup request)、Xn建立响应消息(Xn setup response)、下一代无线接入网节点配置更新消息(NG-RAN node configuration update)、下一代无线接入网节点配置更新确认消息(NG-RAN node configuration update acknowledge)、切换请求消息(handover request)、或切换请求确认消息(handover request acknowledge)、或切换准备失败(handover preparation failure)等等。第十消息可以包括用于指示所述第二接入网设备下的小区支持的在线签约的NPN的信息。可选的，所述用于指示第二接入网设备下的小区支持的在线签约的NPN的信息可以携带在Xn建立请求消息的NR服务小区信息(served cell information NR)、E-UTRA服务小区信息(served cell information E-UTRA)、NR邻小区信息(neighbour information NR)、E-UTRA邻小区信息(neighbour information E-UTRA)的信元中、或者切换请求消息的移动限制列表(mobility restriction list)的信元中。所述用于指示第二接入网设备下的小区支持的在线签约的NPN的信息可以包括NPN的标识的信息和指示信息。该指示信息可以用于指示相应的NPN网络是否支持在线签约或者指示第二接入网设备下的小区广播的NPN是否支持在线签约。NPN的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。NPN的标识的信息和指示信息与步骤S301中的第一网络的标识的信息或第一指示信息的作用类似，此处不再赘述。
可选的，在第一接入网设备接收第二接入网设备发送的第十消息之后，所述第一消息可以用于指示所述第一接入网设备下的小区支持在线签约NPN，也可以用于指示所述第二接入网设备下的小区所支持的在线签约的NPN。
可选的，如表1所示，所述用于指示第二接入网设备下的小区支持的在线签约的NPN的信息可以指示第二接入网设备下的某一个小区或者多个小区所支持的在线签约的NPN的信息。例如，第二接入网设备下的一个或多个TA或者PLMN下所包含的小区所支持的在线签约的NPN的信息。
可选的，所述第十消息用于指示所述第二接入网设备所支持的在线签约的NPN。所述用于指示所述第二接入网设备所支持的在线签约的NPN的信息可以指示第二接入网设备在一个或多个TA或者PLMN下所支持的在线签约的NPN的信息。
可选的，所述第十消息包括第二接入网设备所支持的不同网络可被访问的优先级信息，以使第一接入网设备据此进行接入控制和资源调度等。例如，对于支持公网和/或NPN的第二接入网设备，第十消息包括第二接入网设备所支持的公网和/或NPN网络可被访问的优先级，或者第二接入网设备所支持的不同NPN、PNI-NPN、SNPN、NID或CAG可被访问的优先级。再例如，对于只支持PNI-NPN小区的第二接入网设备，第十消息包括第二接入网设备所支持的不同CAG可被访问的优先级。在第二接入网设备所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以使第一接入网设备据此优先将终端设备调度或者切换到第二接入网设备下的某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区中。可选的，所述第二接入网设备所支持的不同网络可被访问的优先级信息可由OAM、核心网设备、或者第一接入网设备为第 二接入网设备进行辅助配置并发送给第二接入网设备，或者，由第二接入网设备自身配置。
可选的，所述第一消息可以包括指示信息，该指示信息用于指示所述终端设备所在小区是否支持协助相邻小区在线签约NPN。其中，相邻小区可以为第二接入网设备下的小区或第一接入网设备下的除终端设备所在小区的其他小区。终端设备所在小区向终端设备发送支持相邻小区在线签约NPN，指示可以协助相邻小区在线签约NPN，实现终端设备在一个小区下在线签约多个小区所支持的NPN，从而减少终端设备与第一接入网设备之间在线签约NPN的信令开销。
S302，终端设备向第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
具体的，终端设备可以通过RRC、MAC CE、NAS信息、上行控制信息(uplink control information,UCI)或者用户面数据信息向第一接入网设备发送第二消息。第二消息可以为随机接入消息(message1，MSG1)、RRC建立请求(RRC setup request)、RRC建立完成消息(RRC setup complete)、RRC恢复请求消息(RRC resume request)、RRC恢复完成消息(RRC resume complete)、上行信息转移消息(UL information transfer)RRC重建立请求(RRC reestablishment request)、RRC重建立完成(RRC reestablishment complete)、或UE能力信息(UE capability information)等等。其中，所述第二消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：第二网络的标识的信息或第二指示信息。第二网络为请求在线签约的NPN，第二网络的标识的信息或第二指示信息的指示方式与步骤S301中的第一网络的标识的信息或第一指示信息的指示方式类似，此处不再赘述。
可选的，所述第二网络的标识的信息可以与所述第一网络的标识的信息相同。
可选的，第二消息中包含指示信息，所述指示信息用以告知所述第一接入网设备所述终端设备请求在线签约NPN网络。
可选的，第二消息中包含指示信息，所述指示信息用以告知所述第一接入网设备所述终端设备是否有在线签约NPN网络的能力。可选的，第二消息中包含指示信息，所述指示信息用以告知所述第一接入网设备所述终端设备是否支持NPN小区的临近指示信息(proximity indication)功能，所述NPN的临近指示功能包括但不限于以下至少一项：CAG的临近指示信息功能、或NID的临近指示信息功能。所述临近指示信息包括如下信息的一项或多项：所述终端设备正在进入一个或多个CAG小区或NID小区的邻近区域的指示信息、所述终端设备正在离开一个或多个CAG小区或NID小区的邻近区域的指示信息、所述终端设备正在进入一个或多个CAG小区或NID小区的指示信息、或所述终端设备正在离开一个或多个CAG小区或NID小区的指示信息。例如，用字符串entering和leaving分别指示进入和离开，用小区的绝对无线频道编号(absolute radio frequency channel Number-ARFCN)标识小区、或者用小区ID标识小区。CAG的临近指示信息功能、NID的临近指示信息功能分别可以进一步包括但不限于以下至少一项：同频的临近指示功能(intraFreq proximity indication)、异频的临近指示功能(interFreq proximity indication)、异系统(UTRAN或E-UTRAN)的临近指示功能(UTRAN或E-UTRAN-ProximityIndication)。所述CAG同频的临近指示功能用于指示UE是否支持对在UE的 允许接入的CAG名单中的同频的CAG小区执行邻近指示功能。所述CAG异频的临近指示功能用于指示UE是否支持对在UE的允许接入的CAG名单中的异频的CAG小区执行邻近指示功能。所述CAG异系统(UTRAN或E-UTRAN)的临近指示功能用于指示UE是否支持对在UE的允许接入的CAG名单中的异系统(UTRAN或E-UTRAN)的CAG小区执行邻近指示功能。类似的，所述NID同频的临近指示功能用于指示UE是否支持对与UE接入的NID小区或者对在UE的允许接入的NID名单中的同频的NID小区执行邻近指示功能。所述NID异频的临近指示功能用于指示UE是否支持对与UE接入的NID小区或者对在UE的允许接入的NID名单中的异频的NID小区执行邻近指示功能。所述NID异系统(UTRAN或E-UTRAN)的临近指示功能用于指示UE是否支持对与UE接入的NID小区或者对在UE的允许接入的NID名单中的的异系统(UTRAN或E-UTRAN)的NID小区执行邻近指示功能。可选的，终端设备也可以针对某一个或多个CAG或NID的小区具备临近指示功能，例如，UE当前接入的CAG或者NID、UE所签约的CAG或者NID、特定的若干CAG或者NID、或者UE上报的部分CAG或者NID。例如，终端设备通过UE能力信息(UE capability information)消息向第一接入网设备发送上述信息。
可选的，在RRC重建立或者RRC恢复过程中，终端设备向目标接入网设备发送RRC重建立请求或RRC恢复请求消息，目标接入网设备向源接入网设备发送获取UE上下文请求(retrieve UE context request)消息以获取终端设备的上下文，源接入网设备对照本地所存储的终端设备的上下文信息与目标接入网设备下终端设备所在的小区所支持的NPN信息，若所述终端设备的上下文信息与所述目标小区所支持的NPN信息相冲突，则源接入网设备发送获取UE上下文失败(retrieve UE context failure)消息给目标接入网设备，目标接入网设备拒绝终端设备重建立或者恢复RRC连接；若不冲突，则源接入网设备发送获取UE上下文响应(retrieve UE context response)消息给目标接入网设备，目标接入网设备接受终端设备重建立或者恢复RRC连接。所述终端设备的上下文信息包括以下至少一项：允许接入的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)、移动性限制列表(mobility restriction list)包含的无线接入技术限制(RAT Restrictions)、禁止的区域信息(forbidden area information)、服务区域信息(Service Area Information)、终端设备接入不同网络的优先级信息等信息。所述小区所支持的NPN信息包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。例如，对于只能接入CAG小区的终端设备，若上下文信息中终端设备所被允许接入的CAG ID/PNI-NPN没有一个在所述目标小区所支持的CAG ID/PNI-NPN信息中，则源接入网设备向目标接入设备发送失败消息。源接入网设备可以通过Xn接口建立过程获知所述目标小区所支持的CAG ID/PNI-NPN信息。可选的，上述过程是由源接入网设备判断是否接受终端设备重建立或者恢复RRC连接，也可以由目标接入网设备进行判断。例如，源接入网设备接收目标接入网设备发送的UE上下文请求(retrieve UE context request)消息后，向目标接入网设备反馈UE上下文响应(retrieve UE context response)消息，UE上下文响应消息中包括所述终端设备的上下文信息，目标接入网设备对照接收到的所述终端设备的上下文信息与目标接入网设备下终端设备所在的小区所支持的NPN信息，若所述终端设备的上下文信息与所述目标小区所支持的NPN信息相冲突，则目标接入网设备拒绝终端设备重建立或者恢 复RRC连接；若不冲突，目标接入网设备接受终端设备重建立或者恢复RRC连接，向终端设备发送RRC重建立(RRC reestablishment)或RRC恢复(RRC resume)消息。应当理解，上述源接入网设备或目标接入网设备可以为中心单元CU，例如，被不同网络共享的CU。
可选的，终端设备可以通过特定分配的或保留的网络资源向第一接入网设备发送第二消息。网络资源的粒度可以是小区，也可以是NPN。例如以小区为粒度，在UE通过接入小区进行在线签约，通过特定分配的网络资源接入网络的小区时，网络可以确定从该网络资源接入的UE是在请求在线签约。又如，以NPN为粒度，UE通过小区进行在线签约某个NPN，通过特定分配的网络资源接入接入网设备和/或核心网设备时，接入网设备和/或核心网设备可以确定从该网络资源接入的UE是在请求在线签约该NPN。
可选的，所述第二消息包括第二网络的标识的信息和第三网络的标识的信息，所述第二网络是请求在线签约的网络，所述第三网络是已签约的网络。从而不仅可以实现随机接入小区，而且实现在线签约。例如，第二消息可以包括NPN的标识的列表。其中，列表中的第一个标识为已签约的标识，所述列表中的除第一个标识外的其他标识是请求在线签约NPN的标识。或者，所述列表中的多个标识为已签约的标识，列表中的除该多个标识之外的其他标识是请求在线签约NPN的标识，该多个标识在列表中的位置并不固定，可以在是列表中的前面的一个或多个标识，也可以是列表中的中间一个或多个标识，也可以是列表中的最后的一个或多个标识。再例如，第二网络的标识的信息和第三网络的标识的信息都包含在第二消息的NAS消息中，或者，第二网络的标识的信息和第三网络的标识的信息都包含在第二消息的AS消息中，或者，第二网络的标识的信息包含在第二消息的NAS消息中而第三网络的标识的信息包含在第二消息的AS消息中，或者，第二网络的标识的信息包含在第二消息的AS消息中但第三网络的标识的信息包含在第二消息的NAS消息中。比如，在RRC建立完成(RRC setup complete)消息中用以下至少一项网元来指示第三网络的标识的信息：选择的PLMN标识(selected PLMN-Identity)、选择的网络标识(selected Network-Identity)、选择的NPN网络标识(selected NPN-Identity)、选择的NID(selected NID)、选择的CAG标识(selected CAG ID)、选择的SNPN网络标识、或选择的PNI-NPN网络标识；在RRC建立完成(RRC setup complete)消息的网元注册的AMF(registered AMF)中用以下至少一项网元来指示第二网络的标识的信息：PLMN标识(PLMN-Identity)、AMF标识(AMF-Identifier)、网络标识(NID)、CAG标识(CAG ID)、SNPN网络标识、或PNI-NPN网络标识。第一接入网设备基于第三网络的标识的信息对终端设备进行正常的接入控制和核心网设备的选择，而基于第二网络的标识的信息对终端设备进行在线签约控制并选择相应的核心网设备执行在线签约过程。
可选的，所述第二消息用于请求接入所述第一接入网设备下的第一小区，所述第一接入网设备验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则第一接入网设备确定所述终端设备请求在线签约所述第一小区所支持的NPN。若是，则第一接入网设备确定所述终端设备已签约成功。例如，第一小区可以CAG唯一的小区、或者SNPN唯一的小区。
可选的，所述第二消息包括第二网络的标识的信息，第一接入网设备验证所述第二网 络是否为已签约的网络；若否，则第一接入网设备确定所述终端设备请求在线签约所述第二网络的标识的信息所对应的NPN。若是，则第一接入网设备确定所述终端设备已签约成功。
可选的，所述第一消息可以包括N3IWF实体的地址信息，所述地址信息用于指示所述终端设备通过所述N3IWF实体向核心网设备请求在线签约NPN。应理解，N3IWF实体的地址信息也可以是第一无线接入网设备通过第一消息发送给终端设备的，也可以是终端设备已存储的，当终端设备已存储N3IWF实体的地址信息时，第一消息中不用包括N3IWF的地址信息。终端设备可以根据N3IWF实体的地址信息建立IPsec隧道，通过建立的IPsec隧道向核心网设备请求在线签约NPN。终端设备通过建立IPsec隧道实现在线签约NPN，减少信令开销。例如，如图4所示，图4是本申请实施例提供的一种在线签约SNPN的示意图。UE在PLMN RAN下，PLMN RAN与SNPN的核心网之间无接口直接连接，不能进行信令交互。UE可以通过已签约的PLMN和/或已签约的SNPN#1与SNPN网络建立控制面和/或用户面的连接(例如在控制面与AMF之间建立NAS信令传输的通道，在用户面建立PDU会话资源)，建立IPSec隧道与SNPN核心网或者与第三方服务器或者第三方设备等交互进行在线签约SNPN#2。可选的，上述N3IWF实体也可以为其他实体，例如第三方服务器(service provider)等。
又如，如果SNPN RAN为共享RAN，则PLMN RAN和SNPN RAN之间可能存在Xn接口，UE向PLMN RAN发送请求消息，所述请求消息用于指示请求签约SNPN，PLMN RAN将该请求消息通过Xn接口发送给SNPN RAN，然后SNPN RAN将请求消息发送给SNPN AMF，AMF确定UE是否在线签约成功。通过PLMN RAN和SNPN RAN之间的Xn接口在线签约SNPN，减少了信令开销。
可选的，终端设备通过第二消息向第一接入网设备请求在线签约NPN所需发送的所述信息可以包含在非接入层(non-access stratum，NAS)或接入层(access stratum，AS)信息中。
可选的，第一接入网设备接收到终端设备发送第二消息之后，本申请实施例的步骤还可以包括：
S306，第一接入网设备对终端设备请求在线签约的NPN进行判断，当确定所述终端设备请求在线签约的NPN不为所述第一接入网设备支持在线签约的NPN，或者不为所述第二接入网设备支持在线签约的NPN、或者不为核心网设备支持在线签约的NPN时，第一接入网设备向所述终端设备发送第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值。其中，原因值可以为终端设备请求的NPN不被支持、CAG不被支持、NID不被支持、无效的(invalid)NPN、无效的CAG、无效的NID、不被CU支持的NID(NID not served by the CU、或NID not supported by the CU)或不被CU支持的CAG ID(CAG ID not served by the CU、或CAG not supported by the CU)等。
可选的，第四消息可以为RRC重配置消息(RRC reconfiguration)、RRC建立消息(RRC setup)、RRC恢复消息(RRC resume)、下行消息转发消息(DL information transfer)、RRC释放(RRC release)消息、注册拒绝(registration reject)消息、错误指示(error indication) 消息。
可选的，第一接入网设备接收到终端设备发送第二消息之后，本申请实施例的步骤还可以包括：
S307，第一接入网设备向核心网设备发送第六消息，所述第六消息用于指示终端设备请求在线签约NPN。
可选的，第一接入网设备发送第六消息之前，第一接入网设备可以进行初步判断。例如，若第一接入网设备可感知所述终端设备请求在线签约的NPN时，当所述终端设备请求在线签约的NPN为所述第一接入网设备支持在线签约的NPN，或者为所述第二接入网设备支持在线签约的NPN、或者为核心网设备支持在线签约的NPN时，第一接入网设备才向核心网设备发送第六消息。
其中，第六消息可以为初始化UE消息(initial UE message)、上行NAS传输消息(uplink NAS transport)、初始上下文建立响应消息(initial context setup response)、UE上下文修改响应消息(UE context modification response)。所述第六消息的NAS或者AS信息中包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：第五网络的标识的信息或第四指示信息。第五网络的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。第五网络为请求在线签约的NPN。第五网络的标识的信息或第四指示信息与步骤S301中的第一网络的标识的信息或第一指示信息的指示方式类似，此处不再赘述。
S308a，核心网设备接收到第一接入网设备发送的第六消息之后，确定是否接受终端设备的在线签约，若接受，则核心网设备更新有关终端设备的上下文或签约信息，例如更新UE被允许接入的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)等。核心网设备可以向第一接入网设备发送第七消息，所述第七消息用于指示所述终端设备在线签约NPN成功。
其中，第七消息可以为初始上下文建立请求(initial context setup request)、UE上下文修改请求(UE context modification request)、下行NAS传输消息(downlink NAS transport)、注册接受(registration accept)消息。所述第七消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：第六网络的标识的信息或第五指示信息。第六网络为在线签约成功的NPN。
可选的，所述第七消息中的终端设备的上下文或签约信息包括终端设备接入不同网络的优先级信息。例如，对于可以接入公网和/或NPN的终端设备，第七消息中包括终端设备接入公网和/或NPN网络的优先级，或者终端设备接入不同NPN、PNI-NPN、SNPN、NID或CAG的优先级。再例如，对于只能接入PNI-NPN小区的终端设备，第七消息中包括终端设备接入不同CAG、或PNI-NPN的优先级。在终端设备的上下文或签约信息例如移动性限制列表(mobility restriction list)中配置CAG priority、PLMN priority和/或NID priority等，以使第一接入网设备据此服务所述终端设备时优先调度第一接入网设备下的某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区中的资源等；或者，以使第一接入网设备据此优先将终端设备调度或者切换到其他接入网设备下的某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区中。可选的，所述 终端设备接入不同网络的优先级信息可由核心网设备为终端设备在签约或注册等过程中辅助配置并发送给终端设备，或者，由终端设备自身配置。
可选的，所述终端设备接入不同网络的优先级信息也可包含在NG接口的切换请求(handover request)消息中，Xn接口的切换请求(handover request)、辅节点添加请求(s-node addition request)、辅节点修改请求(s-node modification request)、获取UE上下文响应(retrieve UE context response)消息中，以在不同通信过程和不同网元间交互终端设备的上下文信息。
可选的，第一接入网设备收到第七消息后，通过第四消息或第三消息将包含在NAS或者AS信息中的所述终端设备接入不同网络的优先级信息发送给终端设备，以使终端设备可优先小区选择、小区重选、或切换到某一个或者某一些CAG小区、公网小区和/或SNPN小区中。
可选的，所述第七消息包括第六指示信息，所述第六指示信息用于指示所述终端设备是否具有在线签约的能力。例如，如果核心网设备拒绝终端设备在线签约，则第六指示信息用于指示所述终端设备不具有在线签约的能力，防止终端设备后续恶意的在线签约，避免终端设备持续的发起在线签约请求。如果核心网设备接受终端设备在线签约，则第六指示信息用于指示所述终端设备具有在线签约的能力。
进一步的，核心网设备接收到第一接入网设备发送的第六消息之后，所述第六消息包括所述终端设备接入的所述第一接入网设备下的第一小区所支持的NPN的标识的信息，核心网设备可以验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则核心网设备确定所述终端设备请求在线签约所述第一小区所支持的NPN。若是，则核心网设备确定所述终端设备已签约成功。
可选的，第六消息包括所述终端设备接入的所述第一接入网设备下的第一小区的第一PLMN ID对应所支持的NPN的标识的信息，所述第一PLMN ID为所述终端设备所选择接入的PLMN ID。核心网设备可以验证所述终端设备是否已签约所述第一PLMN ID所支持的至少一个NPN；若否，则核心网设备确定所述终端设备请求在线签约所述第一PLMN ID所支持的NPN。若是，则核心网设备确定所述终端设备已签约成功。
进一步的，核心网设备接收到第一接入网设备发送的第六消息之后，所述第六消息包括第二网络的标识的信息，核心网设备可以验证所述第一网络是否为已签约的网络；若否，则核心网设备确定所述终端设备请求在线签约所述第一网络的标识的信息所对应的NPN。若是，则核心网设备确定所述终端设备已签约成功。
可选的，本申请实施例中还可以包括：
S308b，核心网设备接收到第一接入网设备发送的第六消息之后，确定是否接受终端设备的在线签约，若拒绝，则指示终端设备请求在线签约失败，核心网设备向第一接入网设备发送的第五消息，所述第五消息用于指示所述核心网设备拒绝所述终端设备请求在线签约NPN的原因值，或者所述第五消息用于指示所述终端设备在线签约失败。其中，第五消息可以为UE上下文释放命令(UE context release command)、注册拒绝(registration reject)消息、初始上下文建立请求消息(initial context setup request)、UE上下文修改请求消息(UE context modification request)、下行NAS传输消息(downlink NAS transport)、 或错误指示(error indication)消息。
可选的，第五消息中包括所述终端设备接入不同网络的优先级信息。
S309b，第一接入网设备接收到第五消息之后，向终端设备发送第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值、或者所述终端设备在线签约失败。S309b的具体实现方式可以参考S306，本步骤不再赘述。
可选的，核心网设备可以通过第五消息的NAS信息将原因值发送给第一接入网设备，第一接入网设备再通过第四消息将包含原因值得NAS信息转发给终端设备。
可选的，第一接入网设备接收到终端设备发送第二消息之后，本申请实施例的步骤还可以包括：
S309a，第一接入网设备向终端设备发送第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
其中，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第三指示信息。第四网络为在线签约成功的NPN。第三消息可以为MIB、SIB、RRC、MAC CE、NAS信息、下行控制信息(downlink control information,DCI)或用户面数据信息向终端设备发送请求消息。例如，第三消息可以为RRC重配置消息(RRC reconfiguration)、RRC建立消息(RRC setup)、RRC恢复消息(RRC resume)、注册接受(registration accept)、或下行信息转移(DL information transfer)。
进一步的，核心网设备在终端设备在线签约后将已更新的有关终端设备的上下文或签约信息等通过第七消息的NAS或AS信息发送给第一接入网设备，以供第一接入网设备准确执行后续的切换过程或以供第一接入网设备将上述信息通过第三消息转发给终端设备。例如，所述终端设备的上下文或签约信息包括：允许的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)、移动性限制列表(mobility restriction list)包含的无线接入技术限制(RAT Restrictions)、禁止的区域信息(forbidden area information)、服务区域信息(service area information)、终端设备接入不同网络的优先级信息等信息。
进一步的，第一接入网设备可以通过第三消息将包含在NAS或者AS信息中的已更新的有关终端设备的上下文或签约信息等发送给终端设备，以供终端设备准确执行后续的小区选择或重选过程等。例如，所述终端设备的上下文或签约信息包括：允许的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)、移动性限制列表(mobility restriction list)包含的无线接入技术限制(RAT Restrictions)、禁止的区域信息(forbidden area information)、服务区域信息(service area information)、终端设备接入不同网络的优先级信息等信息。
可选的，第三消息除包含上述信息外，还可包含本次允许终端设备所能接入的网络信息。例如，所述允许终端设备所能接入的网络信息包括以下至少一项信息：CAG ID、NID、HRNN或PLMN ID。终端设备接收到第三消息后，若终端设备已签约的信息或者本次被允许接入的网络信息与此时终端设备所接入或驻留的网络信息不一致，例如，本次被允许接入的网络信息与此时终端设备所接入的小区所支持的NID/CAG ID不一致，或者，终端 设备已签约的PNI-NPN不在此时终端设备所接入的小区所支持的PNI-NPN范围内，或者，此时终端设备所接入的小区不符合终端设备接入不同网络的优先级信息，则终端设备进行网络重选、小区重选。
可选的，核心网设备可以在终端设备在线失败后将所述已更新的有关终端设备的上下文或签约信息等通过第五消息的NAS或AS信息发送给第一接入网设备，第一接入网设备再通过第四消息将包含在NAS或者AS信息中的所述已更新的有关终端设备的上下文或签约信息等发送给终端设备。
可选的，第四消息除包含上述信息外，还可包含本次允许终端设备所能接入的网络信息。例如，所述允许终端设备所能接入的网络信息包括以下至少一项信息：CAG ID、NID、HRNN或PLMN ID。终端设备接收到第四消息后，若终端设备已签约的信息或者本次被允许接入的网络信息与此时终端设备所接入或驻留的网络信息不一致，例如，本次被允许接入的网络信息与此时终端设备所接入的小区所支持的NID/CAG ID不一致，或者，终端设备已签约的PNI-NPN不在此时终端设备所接入的小区所支持的PNI-NPN范围内，或者，此时终端设备所接入的小区不符合终端设备接入不同网络的优先级信息，则终端设备进行网络重选、小区重选。
可选的，S301、S303、S304和S305的指示信息用于指示支持在线签约的NPN，S302和S307的指示信息用于指示请求在线签约的NPN，S308a和S309a中的指示信息用于指示在线签约成功的NPN。指示信息的指示方式可以如表1所示。
表1
Figure PCTCN2020072869-appb-000001
Figure PCTCN2020072869-appb-000002
其中，表1描述的是Indication用于指示是否支持在线签约，表中不同的indication可以同时存在或者只有其中若干个存在。同样的，其他信元也可同时存在或只有其中若干存在。例如，如果消息中包括Indication#1，则表示整个小区、接入网设备、核心网设备、中心单元、分布式单元、中心单元用户面、或中心单元控制面所支持的NPN(s)都支持或者都不支持在线签约。如果消息中包括PLMN ID和Indication#2，则表示PLMN ID对应的NID(s)/CAG ID(s)所标识的NPN(s)网络全部支持在线签约或者全部不支持在线签约。如果消息中包括CAG ID和Indication#4、HRNN和Indication#5、NID和Indication#7、或HRNN和Indication#8，Indication#4用于指示CAG ID对应的PNI-NPN是否支持在线签约，Indication#5用于指示HRNN对应的PNI-NPN是否支持在线签约，Indication#7用于指示NID对应的SNPN是否支持在线签约，Indication#8用于指示HRNN对应的SNPN是否支持在线签约，Indication#9用于指示TAC中的SNPN、PNI-NPN、CAG或NID是否支持在线签约，其他相类似，此处不再赘述。指示信息可以指示接入网设备、核心网设备、中心单元、分布式单元、中心单元用户面、或中心单元控制面的某一小区下的NPN(s)，或者某一个跟踪区域(TA)下的NPN(s)，或者某一个PLMN下的NPN(s)等是否支持在线签约。小区可以由以下一项或者多项进行标识：小区标识(cell identity)、小区全球标识(cell global identifier,CAG)、或物理小区标识(physical cell identifier，PCI)，跟踪区域可以由以下一项或者多项进行标识：跟踪区域码(tracking area code,TAC)、或跟踪区域标识(tracking area identity，TAI)，PLMN可以由PLMN ID进行标识。对于如何指示请求在线签约的NPN和如何指示在线签约成功的NPN的情况，与表1的指示方式类似，此处不再赘述。Indication可以设置为支持(support)、不支持(unsupport)、能够(enabled)、不能够(disenabled)、布尔值1、布尔值0、是(yes)、不是(not)、(成功)successful、 或失败(failed)等。应当理解，指示信息不只可以用Indication来实现，还可以通过其他方式实现，例如，以原因值(cause value)来进行指示，终端设备向接入网设备发送RRC建立请求(RRC setup request)消息中包含建立原因值(establishmentCause)，建立原因值为在线签约(subscribing、onboarding、或provisioning等)，以指示终端设备因请求在线签约而发送消息；终端设备向接入网设备发送RRC建立请求(RRC resume request)消息中包含恢复原因值(resumeCause)，恢复原因值为在线签约，以指示终端设备因请求在线签约而发送消息；终端设备向接入网设备发送RRC重建立请求(RRC reestablishment request)消息中包含重建立原因值(reestablishmentCause)，重建立原因值为在线签约，以指示终端设备因请求在线签约而发送消息。
指示信息和NPN的标识的信息可以分别在不同的SIB或消息中发送，或者在同一个SIB或消息中发送。NPN的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。例如，在SIB1中发送indication，用于广播本小区是否支持在线签约NPN。例如，在SIB1中发送indication和NPN的标识的信息，用于指示本小区支持在线签约的NPN。例如，在SIB1中发送NPN的标识的信息，在SIB2、现有标准中其他的SIB、或新定义的SIB中发送indication,用于指示本小区支持在线签约的NPN。例如，可以在SIB1中广播indication、本小区支持的NPN#1和NPN#2的标识的信息、本小区支持在线签约的NPN#1的标识的信息，在SIB2、现有标准中其他的SIB、或新定义的SIB中广播本小区支持在线签约的NPN#3和NPN#4的标识的信息。例如，可以在SIB1中广播indication、本小区支持的NPN#1和NPN#2的标识的信息，在SIB2、现有标准中其他的SIB、或新定义的SIB中广播本小区支持在线签约的NPN#1、NPN#3和NPN#4的标识的信息。可选的，indication不仅可以用于指示本小区是否支持在线签约NPN，也可以用于指示相邻小区是否支持在线签约NPN。例如，00表示支持本小区和相邻小区都不支持在线签约，01表示本小区支持在线签约、且相邻小区不支持在线签约，10表示本小区不支持在线签约、且相邻小区支持在线签约，11表示本小区和相邻小区都支持在线签约。
可选的，S301、S303、S304和S305包含用于指示支持在线签约的NPN的信息，S302和S307包含用于指示请求在线签约的NPN的信息，S308a和S309a中包含用于指示在线签约成功的NPN的信息。所述包含的用于指示支持在线签约的NPN的信息、用于指示请求在线签约的NPN的信息、用于指示在线签约成功的NPN的信息可以如表2或表3所示。
表2
Figure PCTCN2020072869-appb-000003
Figure PCTCN2020072869-appb-000004
表3
Figure PCTCN2020072869-appb-000005
Figure PCTCN2020072869-appb-000006
NPN的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN。在表3中，通过公网PLMN、私网PNI-NPN或SNPN可以在线签约本NPN或其他NPN，终端设备通过访问公网PLMN、私网PNI-NPN或SNPN的核心网设备，例如AMF，可以在线签约本NPN或其他NPN。应当理解，NPN的网络的标识的信息也可以为公网PLMN的网络的标识信息，通过公网PLMN、私网PNI-NPN或SNPN可以在线签约公网。
上述表格中，各个标识有多个时可为标识列表，若只有一个时可不以列表的形式。
表1-表3也适用于S501-S510，S601-S607，S701-S707，S801-S810，S901-S903，下文不再赘述。终端设备通过访问本网络可以在线签约本网络，也可以在线签约其他网络。一个网络可以执行本网络的在线签约，也可以协助另一个网络执行在线签约。
可选的，终端设备发起在线签约请求可以在随机接入过程的RRC建立完成消息(RRC setup complete)之前，也可以在UE进入连接态后，由终端设备或者第一接入网设备发起在线签约请求。在UE初始接入成功之后，核心网设备可以向第一接入网设备发送初始上下文建立请求消息(initial context setup request)，该初始上下文建立请求消息可携带指示信息，该指示信息用于指示所述终端设备是否具有在线签约的能力。
可选的，上述过程是由终端设备发起在线签约的请求，也可以由第一接入网设备或者核心网设备发起在线签约的请求。例如，第一接入网设备或者核心网设备通过MIB、SIB、RRC、MAC CE、NAS信息、下行控制信息(downlink control information,DCI)或用户面数据信息向终端设备发送请求消息，主动要求与所述终端设备在线签约NPN。也即在步骤S301、步骤S308或S309中，由第一接入网设备或者核心网设备发送相关需要在线签约的NPN的信息，主动要求与所述终端设备在线签约相应的NPN。
需要说明的是，上述描述的过程适用于通过PLMN RAN在线签约SNPN、通过PLMN RAN在线签约PNI-NPN、通过PLMN RAN在线签约PLMN、通过PNI-NPN RAN在线签约SNPN、通过PNI-NPN RAN在线签约PNI-NPN、通过PNI-NPN RAN在线签约PLMN、通过SNPN RAN在线签约PNI-NPN、通过SNPN RAN在线签约PLMN、通过SNPN RAN在线签约SNPN。
需要说明的是，本申请实施例所提及的在线签约，也可以表述为在线注册、在线发放(provisioning)、在线部署(onboarding)等等，主要解决网络系统如何提供和更新终端设备的签约信息，以允许终端设备请求连接到期望的NPN的问题，实现终端灵活地接入还未签约的NPN，运营商灵活、及时地允许潜在新用户接入NPN网络。本申请实施例适用于在线签约过程，包括进行签约信息的更新、修改、删除、增添、或释放等过程。
需要说明的是，NPN网络的标识的信息可以包括以下至少一项：PLMN ID、NID、CAG ID或HRNN，也可以包括其他可以用来标识NPN网络的标识的信息。
在本申请实施例中，通过接入网设备向终端设备指示支持在线签约的NPN，终端设备可以请求在线签约的NPN，使得终端设备和网络侧可以动态更新终端设备签约的NPN的信息，实现终端设备灵活的接入非签约的NPN，提高了通信效率。
请参见图5，图5是本申请实施例提供的另一种通信方法的流程示意图。第一接入网设备可以包括第一分布式单元和中心单元，第二接入网设备可以包括第二分布式单元和中心单元，第一分布式单元和第二分布式单元连接到同一个中心单元。该方法包括但不限于如下步骤：
S501，第一分布式单元向终端设备发送第一消息，所述第一消息用于指示所述第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN。S501的具体实现方式可以参考上述实施例中S301的描述，此处不再赘述。
可选的，在第一分布式单元向终端设备发送第一消息之前，本申请实施例中的方法还可以包括：
S503，第二分布式单元向中心单元发送第九消息。所述第九消息用于指示所述第二分布式单元支持在线签约NPN。
其中，所述第九消息包括用于指示第二分布式单元支持在线签约的NPN的信息，所述用于指示第二分布式单元支持在线签约的NPN包括以下至少一项：第一网络的标识的信息或第一指示信息。第一网络为支持在线签约的NPN。所述第一网络的标识的信息包括以下至少一项：公共陆地移动网络标识PLMN ID、网络标识NID、封闭访问组标识CAG ID或用户可读网络标识HRNN。第一网络的标识的信息或第一指示信息的指示方式可以参考上述实施例。
其中，第九消息可以为F1建立请求消息(F1 setup request)、F1建立响应消息(F1 setup response)、gNB-DU的配置更新消息(gNB-DU configuration update)、gNB-DU的配置更新确认消息(gNB-DU configuration update acknowledge)、gNB-CU的配置更新消息(gNB-CU configuration update)、gNB-CU的配置更新确认消息(gNB-CU configuration update acknowledge)等等。
可选的，所述第九消息中包括第二分布式单元所支持的不同网络可被访问的优先级信息，以使中心单元据此进行接入控制和资源调度等。例如，对于支持公网和/或NPN的第二分布式单元，第九消息包括第二分布式单元所支持的公网和/或NPN网络可被访问的优先级，或者第二分布式单元所支持的不同NPN、PNI-NPN、SNPN、NID或CAG的优先级。再例如，对于只支持PNI-NPN小区的第二分布式单元，第九消息包括第二分布式单 元所支持的不同CAG、或PNI-NPN可被访问的优先级。在第二分布式单元所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以指示中心单元可优先调度某一个或者某一些CAG小区、公网小区和/或SNPN小区中的资源等。可选的，所述第二分布式单元所支持的不同网络可被访问的优先级信息可由OAM、核心网设备或中心单元为第二分布式单元辅助配置并发送给第二分布式单元，或者，由第二分布式单元自身配置。
可选的，在第一分布式单元向终端设备发送第一消息之前，本申请实施例中的方法还可以包括：
S504，中心单元向第一分布式单元发送第八消息，所述第八消息用于指示所述中心单元支持在线签约NPN和/或第二分布式单元支持在线签约NPN。
其中，第八消息可以为FI建立响应消息(F1 setup response)、gNB-DU的配置更新确认消息(gNB-DU configuration update acknowledge)、gNB-CU的配置更新消息(gNB-CU configuration update)。所述第八消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN信息包括以下至少一项：第二网络的标识的信息或第二指示信息。第二网络为支持在线签约的NPN。第二网络的标识的信息或第二指示信息的指示方式可以参考上述实施例中S301中的第一网络的标识的信息或第一指示信息的指示方式。
应理解，中心单元支持在线签约的NPN，可以是多个分布式单元(例如DU#1、DU#2、…、DU#n)支持的在线签约的NPN的集合，也可以为OAM等为中心单元配置的可在线签约的NPN。
可选的，所述第八消息中包括中心单元所支持的不同网络可被访问的优先级信息，以使第一分布式单元据此进行接入控制和资源调度、辅助第一分布式单元配置接入控制参数(例如，UAC)等。例如，对于支持公网和/或NPN的中心单元，第八消息包括中心单元接入公网和/或NPN网络的优先级，或者中心单元所支持的不同NPN、PNI-NPN、SNPN、NID或CAG可被访问的优先级。再例如，对于只支持PNI-NPN的中心单元，配置中心单元所支持的不同CAG的可被访问的优先级。在中心单元所支持的小区、PLMN或者TA中配置CAG priority、PLMN priority和/或NID priority等，以指示第一分布式单元可优先调度某一个或者某一些CAG小区、PNI-NPN小区、公网小区和/或SNPN小区中的资源、辅助第一分布式单元配置接入控制参数并在Uu口广播相应参数等。可选的，所述中心单元所支持的不同网络可被访问的优先级信息可由OAM、核心网设备或第一分布式单元为中心单元辅助配置并发送给中心单元，或者，由中心单元自身配置。
进一步的，中心单元可部署为中心单元用户面(CU-UP)和中心单元控制面(CU-CP)，中心单元用户面和中心单元控制面间通过E1接口连接。类似的，中心单元用户面可向中心单元控制面发送消息以指示中心单元用户面所配置的所支持的不同网络可被访问的优先级信息，所发送的消息可为gNB-CU-UP E1建立请求(gNB-CU-UP E1 setup request)、gNB-CU-CP E1建立响应(gNB-CU-CP E1 setup response)、gNB-CU-UP配置更新(gNB-CU-UP configuration update)、gNB-CU-CP配置更新确认(gNB-CU-CP configuration update acknowledge)；中心单元控制面可向中心单元用户面发送消息以指示中心单元控制 面所配置的所支持的不同网络可被访问的优先级信息，所发送的消息可为gNB-CU-UP E1建立响应(gNB-CU-UP E1 setup response)、GNB-CU-CP E1建立请求(GNB-CU-CP E1 setup request)、GNB-CU-UP配置更新确认(GNB-CU-UP configuration update acknowledge)、GNB-CU-CP配置更新(GNB-CU-CP configuration update)。E1接口具体优先级发送和配置方法可参考S303、S304、S305、S503和S504所述，不再赘述。
S502，终端设备向第一分布式单元发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。S502的具体实现方式可以参考上述实施例中S302的描述，此处不再赘述。
可选的，终端设备向第一分布式单元发送第二消息之后，本申请实施例中的方法还可以包括：
S505，第一分布式单元向终端设备发送第四消息，所述第四消息用于指示第一分布式单元拒绝终端设备请求在线签约NPN的原因值。S505的具体实现方式可以参考上述实施例中S306的描述，此处不再赘述。
可选的，终端设备向第一分布式单元发送第二消息之后，本申请实施例中的方法还可以包括：
S506，第一分布式单元向中心单元发送第六消息，所述第六消息用于指示终端设备请求在线签约NPN。
其中，第一分布式单元接收到终端设备发送的第二消息之后，可以确定终端设备请求在线签约的NPN是否为支持在线签约的NPN。具体实现方式与上述实施例中S307类似，此处不再赘述。第一分布式单元也可以不对第二消息进行处理，向中心单元发送第六消息，由中心单元进行处理。
可选的，第六消息可以为初始上行RRC消息转发(initial UL RRC message transfer)、上行RRC消息转发(UL RRC message transfer)、UE上下文建立响应(UE context setup response)、UE上下文修改响应(UE context modification response)、UE上下文释放请求(UE context release request)或UE上下文修改要求(UE context modification required)。
S507，中心单元向核心网设备发送第十消息。所述第十消息用于指示终端设备请求在线签约NPN。第十消息可以为初始化UE消息(initial UE message)、上行NAS传输消息(uplink NAS transport)。S507的具体实现方式可以参考上述实施例S307的描述，此处不再赘述。
S508，核心网设备向中心设备发送第十一消息，所述第十一消息用于指示在线签约NPN成功或失败。其中，第十一消息可以为初始上下文建立请求(initial context setup request)、UE上下文修改请求(UE context modification request)、下行NAS传输消息(downlink NAS transport)、注册接受(registration accept)消息。S508的具体实现方式可以参考上述实施例S308a和S308b的描述，此处不再赘述。
S509，中心单元向第一分布式单元发送第七消息，所述第七消息用于指示在线签约NPN成功或失败。所述第七消息与所述第十一消息所包含的内容和功能相同，此处不再赘述。
可选的，第七消息可以为下行RRC消息转发(DL RRC message transfer)、UE上下 文建立请求(UE context setup request)、UE上下文修改请求(UE context modification request)、UE上下文释放要求(UE context release command)或UE上下文修改确认(UE context modification confirm)。
S510，第一分布式单元向终端设备发送第三消息，所述第三消息用于指示在线签约NPN成功，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：第四网络的标识的信息或第三指示信息。第四网络为在线签约成功的NPN。第三消息可以为RRC建立消息(RRC setup)、RRC恢复消息(RRC resume)、注册接受(registration accept)、或下行信息转移(DL information transfer)。S510的具体实现方式可以参考上述实施例中的S309a的描述，此处不再赘述。
可选的，在DU和CU被多个网络共享的网络部署场景下，终端设备可通过第二消息发送终端设备所选择接入的NID或者CAG ID，DU若可读取其中的NID或者CAG ID信息，如果终端设备所选择接入的NID或者CAG ID不被CU支持，则DU向CU发送消息，例如，向CU发送UE上下文释放请求(UE context release request)消息，以使CU释放为UE配置的资源和上下文。所述DU向CU发送的消息中包括释放上下文和资源的原因值(cause value)，原因值可为不被CU支持的NID(NID not served by the CU、或NID not supported by the CU)或不被CU支持的CAG ID(CAG ID not served by the CU、或CAG not supported by the CU)。所述第二消息可为RRC建立完成(RRC setup complete)消息，DU可从F1接口建立或者CU配置更新等过程中获知CU所支持的NID或CAG ID信息。
在本申请实施例中，通过终端设备所在小区协助相邻小区在线签约NPN，实现终端设备在一个小区下在线签约多个小区所支持的NPN，从而减少终端设备与第一接入网设备之间在线签约NPN的信令开销。
请参见图6，图6是本申请实施例提供的另一种通信方法的流程示意图。本申请实施例中的步骤至少包括：
S601，核心网设备向接入网设备发送NG接口建立响应(NG setup response)消息。该NG接口建立响应消息用于指示核心网设备支持在线签约的NPN。本步骤的具体实现方式可以参考上述实施例中S304的描述，此处不再赘述。
S602，接入网设备通过MIB、SIB、RRC、MAC CE、NAS信息或者用户面数据信息等方式向终端设备发送消息。该消息用于指示接入网设备下的小区支持在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S301的描述，此处不再赘述。
S603，终端设备通过RRC、MAC CE、NAS信息、用户面数据信息等方式向接入网设备发送消息。该消息用于指示终端设备请求在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S302的描述，此处不再赘述。
S604，接入网设备对终端设备请求在线签约的NPN进行判断，当确定终端设备请求在线签约的NPN不为所述接入网设备支持在线签约的NPN，或者不为核心网设备支持在线签约的NPN时，接入网设备向终端设备发送注册拒绝消息(registration reject)或RRC释放(RRC release)消息，该消息用于指示接入网设备拒绝终端设备请求在线签约NPN 的原因值。本步骤的具体实现方式可以参考上述实施例中S306的描述，此处不再赘述。
S605，接入网设备向核心网设备发送初始化UE消息(initial UE message)或者上行NAS传输消息(uplink NAS transport)。本步骤的具体实现方式可以参考上述实施例中S307的描述，此处不再赘述。
S606，核心网设备确定是否接受终端设备的在线签约，若接受，则核心网设备更新有关终端设备的上下文或签约信息，例如更新UE被允许接入的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)等。若拒绝，则指示终端设备请求在线签约失败。核心网设备可以向接入网设备发送初始化UE上下文建立请求(initial UE context setup request)或者下行NAS传输(downlink NAS transport)消息，用于指示所述终端设备在线签约NPN成功或失败。本步骤的具体实现方式可以参考上述实施例中S308a和S308b的描述，此处不再赘述。
S607，接入网设备向终端设备发送RRC重配置(RRC reconfiguration)消息或者上述注册拒绝消息，其中，RRC重配置消息用于指示所述终端设备在线签约NPN成功。本步骤的具体实现方式可以参考上述实施例中S309a和S309b的描述，此处不再赘述。
请参见图7，图7是本申请实施例提供的另一种通信方法的流程示意图。本申请实施例中的步骤至少包括：
S701，第一接入网设备接收第二接入网设备发送的Xn建立请求(Xn setup request)消息。该Xn建立请求消息用于指示第二接入网设备下的小区或第二接入网设备所支持的在线签约的NPN。本步骤的具体实现方式可以参考上述实施例中S305的描述，此处不再赘述。
S702，第一接入网设备通过MIB、SIB、RRC、MAC CE、NAS信息或者用户面数据信息等方式向终端设备发送消息。该消息用于指示第一接入网设备下的小区、和第二接入网设备下的小区或第二接入网设备所支持在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S301的描述，此处不再赘述。
S703，终端设备通过RRC、MAC CE、NAS信息、或者用户面数据信息等方式向第一接入网设备发送消息。该消息用于指示终端设备请求在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S302的描述，此处不再赘述。
S704，第一接入网设备对终端设备请求在线签约的NPN进行判断，当确定终端设备请求在线签约的NPN不为所述第一接入网设备支持在线签约的NPN，或者不为第二接入网设备支持在线签约的NPN，或者不为核心网设备支持在线签约的NPN时，第一接入网设备向终端设备发送注册拒绝(registration reject)消息或RRC释放(RRC release)消息，该消息用于指示拒绝终端设备请求在线签约NPN的原因值。本步骤的具体实现方式可以参考上述实施例中S306的描述，此处不再赘述。
S705，第一接入网设备向核心网设备发送初始化UE消息(initial UE message)或者上行NAS传输消息(uplink NAS transport)。本步骤的具体实现方式可以参考上述实施例中S307的描述，此处不再赘述。
S706，核心网设备确定是否接受终端设备的在线签约，若接受，则核心网设备更新有关终端设备的上下文或签约信息，例如更新UE被允许接入的CAG列表(allowed CAG  list)、只能接入CAG的指示(CAG-only indication)等。若拒绝，则指示终端设备请求在线签约失败。核心网设备可以向第一接入网设备发送初始化UE上下文建立请求(initial UE context setup request)或者下行NAS传输消息(downlink NAS transport)，用于指示所述终端设备在线签约NPN成功或失败。本步骤的具体实现方式可以参考上述实施例中S308a和S308b的描述，此处不再赘述。
S707，第一接入网设备向终端设备发送RRC重配置(RRC reconfiguration)消息、或者上述注册拒绝(registration reject)消息，其中，RRC重配置消息用于指示所述终端设备在线签约NPN成功，所述注册拒绝消息参考S704所述。本步骤的具体实现方式可以参考上述实施例中S309a和S309b的描述，此处不再赘述。
请参见图8，图8是本申请实施例提供的另一种通信方法的流程示意图。本申请实施例中的步骤至少包括：
S801，第二分布式单元向中心单元发送的F1建立请求(F1 setup request)消息。该F1建立请求消息用于指示所述第二分布式单元支持在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S503的描述，此处不再赘述。
S802，中心单元向第一分布式单元发送FI建立响应(F1 setup response)消息，所述FI建立响应消息指示所述中心单元支持在线签约NPN和/或第二分布式单元支持在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S504的描述，此处不再赘述。
S803，第一分布式单元通过MIB、SIB、RRC、MAC CE、NAS信息或者用户面数据信息等方式向终端设备发送消息。该消息用于指示第一分布式单元和第二分布式单元支持在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S501的描述，此处不再赘述。
S804，终端设备通过RRC、MAC CE、NAS信息、或者用户面数据信息等方式向第一分布式单元发送消息。该消息用于指示终端设备请求在线签约NPN。本步骤的具体实现方式可以参考上述实施例中S502的描述，此处不再赘述。
S805，第一分布式单元对终端设备请求在线签约的NPN进行判断，当确定终端设备请求在线签约的NPN不为所述第一分布式单元支持在线签约的NPN，或者不为第二分布式单元支持在线签约的NPN，或者不为核心网设备支持在线签约的NPN时，第一分布式单元向终端设备发送注册拒绝(registration reject)消息或RRC释放(RRC release)消息，该消息用于指示拒绝终端设备请求在线签约NPN的原因值。本步骤的具体实现方式可以参考上述实施例中S505的描述，此处不再赘述。
S806，第一分布式单元向中心单元发送初始上行RRC消息转发(initial UL RRC message transfer)消息，该初始上行RRC消息转发消息用于指示终端设备请求在线签约NPN。例如，当终端设备请求在线签约的NPN为所述第一分布式单元支持在线签约的NPN，或者为第二分布式单元支持在线签约的NPN，或者为核心网设备支持在线签约的NPN时，第一分布式单元向中心单元发送所述消息。本步骤的具体实现方式可以参考上述实施例中S506的描述，此处不再赘述。
S807，中心单元向核心网设备发送初始化UE消息(initial UE message)或者上行NAS传输消息(uplink NAS transport)。本步骤的具体实现方式可以参考上述实施例中S507的 描述，此处不再赘述。
S808，核心网设备确定是否接受终端设备的在线签约，若接受，则核心网设备更新有关终端设备的上下文或签约信息，例如更新UE被允许接入的CAG列表(allowed CAG list)、只能接入CAG的指示(CAG-only indication)等。若拒绝，则指示终端设备请求在线签约失败。核心网设备可以向中心单元发送初始化UE上下文建立请求(initial UE context seutp request)消息或者下行NAS传输消息(downlink NAS transport)，用于指示所述终端设备在线签约NPN成功或失败。本步骤的具体实现方式可以参考上述实施例中S508的描述，此处不再赘述。
S809，中心单元向第一分布式单元发送UE上下文建立请求(UE context setup request)消息，UE上下文建立请求用于指示在线签约NPN成功或失败。本步骤的具体实现方式可以参考上述实施例中S509的描述，此处不再赘述。
S810，第一分布式单元向终端设备发送RRC重配置消息或者上述注册拒绝消息，其中，RRC重配置消息用于指示所述终端设备在线签约NPN成功。本步骤的具体实现方式可以参考上述实施例中S510的描述，此处不再赘述。
请参见图9，图9是本申请实施例提供的另一种通信方法的流程示意图。本申请实施例中的步骤至少包括：
S901，接入网设备通过MIB、SIB、RRC、MAC CE、NAS信息、或者用户面数据信息等方式向终端设备发送消息，该消息用于指示接入网设备支持在线签约的NPN。该消息可以包括N3IWF实体的地址信息。本步骤的具体实现方式可以参考上述实施例中S301的描述，此处不再赘述。
S902，终端设备根据N3IWF实体的地址信息建立IPsec隧道，通过建立的IPsec隧道向核心网设备发送上行NAS消息，所述上行NAS消息用于请求在线签约NPN。其中，N3IWF实体的地址信息可以是无线接入网设备发送给终端设备的，也可以是终端设备已存储的。本步骤的具体实现方式可以参考上述实施例中S302的描述，此处不再赘述。上述N3IWF实体也可以为其他实体，例如，第三方服务器(service provider)或者第三方设备等。
S903，核心网设备通过建立的IPsec隧道向终端设备发送下行NAS消息，所述下行NAS消息用于指示在线签约NPN成功或失败。本步骤的具体实现方式可以参考上述实施例中S309a和S309b的描述，此处不再赘述。
如图10所示，图10是本申请实施例提供的另一种通信方法的流程示意图。本申请实施例中的步骤至少包括：
S1001，第一接入网设备通过Xn接口向第二接入网设备发送切换请求(handover request)消息。所述切换请求消息用于将终端设备从第一接入网设备下的小区切换到第二接入网设备下的目标小区。所述切换请求消息包括终端设备所能接入的NPN的信息。
S1002，若目标小区所支持的NPN与终端设备所能接入的NPN冲突，或者与目标NPN冲突，则第二接入网设备向第一接入网设备发送切换准备失败消息(handover preparation failure)。所述切换准备失败消息中包括目标小区或目标小区的目标PLMN所支持的NPN的标识的信息、或者目标小区的目标PLMN所支持的在线签约的NPN的标 识的信息。
例如，第一接入网设备将终端设备可接入的CAG(allowed CAG list)在切换消息的移动性限制列表(mobility restriction list)中发送给第二接入网设备，若终端设备所能接入的CAG/PNI-NPN不属于任何一个目标小区所支持的CAG/PNI-NPN，即不被允许接入目标小区，则第二接入网设备在切换准备失败消息中携带目标小区或目标小区的目标PLMN所能支持的CAG ID/PNI-NPN和/或NID发送给第一接入网设备。再比如，第一接入网设备将目标NID/SNPN发送给第二接入网设备，若目标小区不支持目标NID/SNPN，则第二接入网设备在切换准备失败消息中携带目标小区所能支持的NID/SNPN和/或PNI-NPN/CAG ID发送给第一接入网设备。可选的，上述切换准备失败消息中携带原因值，失败原因可以为所提供的CAG ID不被支持(CAG ID(s)not supported)、所提供的NID不被支持(NID(s)not supported)、所提供的SNPN不被支持(SNPN(s)not supported)、所提供的PNI-NPN不被支持(PNI-NPN(s)not supported)、无效的CAG标识(invalid CAG ID(s))、无效的NID(invalid NID(s))、无效的SNPN(invalid SNPN)、无效的PNI-NPN(invalid PNI-NPN)、或者只能接入CAG(CAG-only access)等，即指示第一接入网设备所提供的CAG ID、NID、SNPN网络、或者PNI-NPN网络不被第二接入网设备下的目标小区所支持。
类似的，在基于NG接口进行切换的过程中，如果目标小区所支持的NPN与终端设备所能接入的NPN冲突，或者与目标NPN冲突，则第二接入网设备发送切换失败(handover failure)消息给AMF，AMF发送切换准备失败消息(handover preparation failure)给第一接入网设备，切换失败(handover failure)消息和AMF发送切换准备失败(handover preparation failure)消息中包括目标小区或目标小区的目标PLMN所支持的NPN的标识的信息或者目标小区所支持的在线签约的NPN的标识的信息。例如，第一接入网设备发送切换要求(handover required)消息给AMF，AMF将终端设备可接入的CAG(allowed CAG list)在切换请求(handover request)消息的移动性限制列表(mobility restriction list)中发送给第二接入网设备，若终端设备所能接入的CAG/PNI-NPN不属于任何一个目标小区所支持的CAG/PNI-NPN，即不被允许接入目标小区，则第二接入网设备在切换失败(handover failure)消息中携带目标小区或目标小区的目标PLMN所能支持的CAG ID/PNI-NPN和/或NID发送AMF，AFM在切换准备失败消息中转发给第一接入网设备。再比如，在NG接口建立或更新的过程中，例如，通过NG建立响应(NG setup response)和AMF配置更新(AMF configuration update)消息，AMF会将其配置的NID/SNPN信息告知第一接入网设备和第二接入网设备。若AMF只能支持一个NID/SNPN，则在切换过程中，第一接入网设备向AMF发送切换要求(handover required)消息，消息中不需要携带服务NID和目标NID，因为AMF只支持一个NID且标准中不支持终端设备在不同NID间切换，所以AMF收到第一接入网设备发送的切换请求消息，基于当前终端设备的服务NID便可知目标NID，切换请求消息中包括第二接入网设备的全球RAN节点标识(Global RAN Node ID)，AMF据此寻址第二接入网设备，若第二接入网设备不支持NID，则AMF与第二接入网设备间有可能无NG接口连接，则AMF便并不能寻址到第二接入网设备而导致切换失败，则AMF向第一接入网设备反馈切换准备 失败消息(handover preparation failure)，消息中携带失败原因值，例如，上述无效的NID(invalid NID)等、无效的全球RAN节点标识(Global RAN Node ID)、未找到目标接入网设备(target RAN not connected)；或者，AMF与第二接入网设备间有可能存在NG接口连接，AMF向第二接入网设备发送切换请求(handover request)消息，若AMF只支持一个NID/SNPN,AMF不用将目标NID/SNPN发送给第二接入网设备，若目标小区不支持目标NID/SNPN，则第二接入网设备在切换失败(handover failure)消息中携带目标小区所能支持的NID/SNPN和/或PNI-NPN/CAG ID发送给AMF，AMF进而通过切换准备失败消息(handover preparation failure)转发给第一接入网设备，切换失败(handover failure)和/或切换准备失败消息中可携带上述原因值，不再赘述。若由于第二接入网设备原本支持目标NID/SNPN而配置信息更新后不再支持但还未及时与AMF进行配置更新导致的切换失败，第二接入网设备收到AMF发送的切换请求消息后也可触发RAN配置更新(RAN configuration update)消息、NG重启(NG reset)或错误指示(error indication)消息流程，以更新第二接入网设备的NID/SNPN配置信息，消息中可包括上述原因值，不再赘述。
上述详细阐述了本申请实施例的方法，下面提供了本申请实施例的装置。
如图11所示，图11是本申请实施例提供的一种通信装置的示意图，该通信装置至少包括发送模块1101、接收模块1102和处理模块1103，其中：
发送模块1101，用于向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
接收模块1102，用于接收所述终端设备发送的第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
可选的，处理模块1103，用于验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则确定所述终端设备请求在线签约所述第一小区所支持的NPN。
可选的，处理模块1103，用于验证所述第二网络是否为已签约的网络；若否，则确定所述终端设备请求在线签约所述第二网络的标识的信息所对应的NPN。
可选的，发送模块1101，还用于向所述终端设备发送第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
可选的，发送模块1101，还用于向所述终端设备发送第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值。
可选的，接收模块1102，还用于接收核心网设备发送的第五消息，所述第五消息用于指示所述核心网设备拒绝所述终端设备请求在线签约NPN的原因值。
可选的，发送模块1101，还用于向核心网设备发送第六消息，所述第六消息用于指示所述终端设备请求在线签约NPN；
可选的，接收模块1102，还用于接收所述核心网设备发送的第七消息，所述第七消息用于指示所述终端设备在线签约NPN成功或指示所述终端设备在线签约失败。
可选的，接收模块1102，还用于接收核心网设备发送的第八消息，所述第八消息用于指示所述核心网设备支持在线签约的NPN。
可选的，发送模块1101，还用于向终端设备发送所述第一消息，所述第一消息用于指示所述第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN；
接收模块1102，还用于接收所述终端设备发送的所述第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
需要说明的是，各个模块的实现还可以对应参照图3至图10所示的方法实施例的相应描述，执行上述实施例中第一接入网设备所执行的方法和功能。
如图12所示，图12是本申请实施例提供的另一种通信装置的示意图，该通信装置至少包括接收模块1201和发送模块1202，其中：
接收模块1201，用于接收第一接入网设备发送的第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
发送模块1202，用于向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
可选的，接收模块1201，还用于接收所述第一接入网设备发送的第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
可选的，接收模块1201，还用于接收所述第一接入网设备向发送的第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
需要说明的是，各个模块的实现还可以对应参照图3至图10所示的方法实施例的相应描述，执行上述实施例中终端设备所执行的方法和功能。
如图13所示，图13是本申请实施例提供的另一种通信装置的示意图，该通信装置至少包括接收模块1301、发送模块1302和处理模块1303，其中：
接收模块1301，用于接收第一接入网设备发送的第一消息，所述第一消息用于指示所述终端设备请求在线签约NPN；
发送模块1302，用于向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备在线签约NPN成功。
可选的，处理模块1303，用于验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则确定所述终端设备请求在线签约所述第一小区所支持的NPN。
可选的，处理模块1303，用于验证所述第一网络是否为已签约的网络；若否，则确定所述终端设备请求在线签约所述第一网络的标识的信息所对应的NPN。
可选的，发送模块1302，还用于向所述第一接入网设备发送第三消息，所述第三消息用于指示所述核心网设备支持在线签约的NPN。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
需要说明的是，各个模块的实现还可以对应参照图3至图10所示的方法实施例的相应描述，执行上述实施例中核心网设备所执行的方法和功能。
如图14所示，图14是本申请实施例提出的一种第一接入网设备的结构示意图。如图 14所示，该第一接入网设备可以包括：至少一个处理器1401，至少一个通信接口1402，至少一个存储器1403。可选的，第一接入网设备还可以包括至少一个通信总线1404。
其中，处理器1401可以是中央处理器单元，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、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。通信总线1404可以是外设部件互连标准PCI总线或扩展工业标准结构EISA总线等。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14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。通信总线1404用于实现这些组件之间的连接通信。其中，本申请实施例中设备的通信接口1402用于与其他节点设备进行信令或数据的通信。存储器1403可以包括易失性存储器，例如非挥发性动态随机存取内存(nonvolatile random access memory，NVRAM)、相变化随机存取内存(phase change RAM，PRAM)、磁阻式随机存取内存(magetoresistive RAM，MRAM)等，还可以包括非易失性存储器，例如至少一个磁盘存储器件、电子可擦除可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、闪存器件，例如反或闪存(NOR flash memory)或是反及闪存(NAND flash memory)、半导体器件，例如固态硬盘(solid state disk，SSD)等。存储器1403可选的还可以是至少一个位于远离前述处理器1401的存储装置。存储器1403中可选的还可以存储一组程序代码。处理器1401可选的还可以执行存储器1403中所存储的程序。
向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
接收所述终端设备发送的第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
可选的，处理器1401还用于执行如下操作：
验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则确定所述终端设备请求在线签约所述第一小区所支持的NPN。
可选的，处理器1401还用于执行如下操作：
验证所述第二网络是否为已签约的网络；若否，则确定所述终端设备请求在线签约所述第二网络的标识的信息所对应的NPN。
可选的，处理器1401还用于执行如下操作：
向所述终端设备发送第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
可选的，处理器1401还用于执行如下操作：
向所述终端设备发送第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值。
可选的，处理器1401还用于执行如下操作：
接收核心网设备发送的第五消息，所述第五消息用于指示所述核心网设备拒绝所述终端设备请求在线签约NPN的原因值。
可选的，处理器1401还用于执行如下操作：
向核心网设备发送第六消息，所述第六消息用于指示所述终端设备请求在线签约NPN；
接收所述核心网设备发送的第七消息，所述第七消息用于指示所述终端设备在线签约NPN成功或指示所述终端设备在线签约失败。
可选的，处理器1401还用于执行如下操作：
接收核心网设备发送的第八消息，所述第八消息用于指示所述核心网设备支持在线签约的NPN。
可选的，处理器1401还用于执行如下操作：
向终端设备发送所述第一消息，所述第一消息用于指示所述第一分布式单元下的小区支持在线签约NPN和/或第二分布式单元下的小区支持在线签约NPN；
接收所述终端设备发送的所述第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
进一步的，处理器还可以与存储器和通信接口相配合，执行上述申请实施例中第一接入网设备的操作。
请继续参考图15，图15是本申请实施例提出的一种终端设备的结构示意图。如图所示，该终端设备可以包括：至少一个处理器1501，至少一个通信接口1502，至少一个存储器1503。可选的，该终端设备还可以包括至少一个通信总线1504。
其中，处理器1501可以是前文提及的各种类型的处理器。通信总线1504可以是外设部件互连标准PCI总线或扩展工业标准结构EISA总线等。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。通信总线1504用于实现这些组件之间的连接通信。其中，本申请实施例中设备的通信接口1502用于与其他节点设备进行信令或数据的通信。存储器1503可以是前文提及的各种类型的存储器。存储器1503可选的还可以是至少一个位于远离前述处理器1501的存储装置。存储器1503中存储一组程序代码，且处理器1501执行存储器1503中程序。
接收第一接入网设备发送的第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
可选的，处理器1501还用于执行如下操作：
接收所述第一接入网设备发送的第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
可选的，处理器1501还用于执行如下操作：
接收所述第一接入网设备向发送的第四消息，所述第四消息用于指示所述第一接入网设备拒绝所述终端设备请求在线签约NPN的原因值。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
进一步的，处理器还可以与存储器和通信接口相配合，执行上述申请实施例中终端设备的操作。
请继续参考图16，图16是本申请实施例提出的一种核心网设备的结构示意图。如图所示，该核心网设备可以包括：至少一个处理器1601，至少一个通信接口1602，至少一个存储器1603。可选的，核心网设备还可以包括至少一个通信总线1604。
其中，处理器1601可以是前文提及的各种类型的处理器。通信总线1604可以是外设部件互连标准PCI总线或扩展工业标准结构EISA总线等。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16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。通信总线1604用于实现这些组件之间的连接通信。其中，本申请实施例中设备的通信接口1602用于与其他节点设备进行信令或数据的通信。存储器1603可以是前文提及的各种类型的存储器。存储器1603可选的还可以是至少一个位于远离前述处理器1601的存储装置。存储器1603中存储一组程序代码，且处理器1601执行存储器1603中程序。
接收第一接入网设备发送的第一消息，所述第一消息用于指示所述终端设备请求在线签约NPN；
向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备在线签约NPN成功。
可选的，处理器1601还用于执行如下操作：
验证所述终端设备是否已签约所述第一小区所支持的至少一个NPN；若否，则确定所述终端设备请求在线签约所述第一小区所支持的NPN。
可选的，处理器1601还用于执行如下操作：
验证所述第一网络是否为已签约的网络；若否，则确定所述终端设备请求在线签约所述第一网络的标识的信息所对应的NPN。
可选的，处理器1601还用于执行如下操作：
向所述第一接入网设备发送第三消息，所述第三消息用于指示所述核心网设备支持在线签约的NPN。
其中，各个消息包括内容以及功能可参考前述方法实施例的描述，此处不再赘述。
进一步的，处理器还可以与存储器和通信接口相配合，执行上述申请实施例中核心网设备的操作。
本申请实施例还提供了一种芯片系统，该芯片系统包括处理器，用于支持第一接入网设备、终端设备或核心网设备以实现上述任一实施例中所涉及的功能，例如生成或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还可以包括存储器，所述存储器，用于第一接入网设备、终端设备或核心网设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例还提供了一种处理器，用于与存储器耦合，用于执行上述各实施例中任一实施例中涉及第一接入网设备、终端设备或核心网设备的任意方法和功能。
本申请实施例还提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行执行上述各实施例中任一实施例中涉及第一接入网设备、终端设备或核心网设 备的任意方法和功能。
本申请实施例还提供了一种装置，用于执行上述各实施例中任一实施例中涉及第一接入网设备、终端设备或核心网设备的任意方法和功能。
本申请实施例还提供一种无线通信系统，该系统包括上述任一实施例中涉及的至少一个接入网设备、至少一个终端设备和至少一个核心网设备。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (30)

  1. 一种通信方法，其特征在于，所述方法包括：
    第一接入网设备向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
    所述第一接入网设备接收所述终端设备发送的第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
  2. 如权利要求1所述的方法，其特征在于，所述第一消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：支持在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示支持在线签约。
  3. 如权利要求1或2所述的方法，其特征在于，所述第二消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第二指示信息，所述第二指示信息用于指示请求在线签约。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备向所述终端设备发送第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
  5. 如权利要求4所述的方法，其特征在于，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：在线签约成功的NPN的标识的信息或第三指示信息，所述第三指示信息用于指示在线签约成功。
  6. 如权利要求1-5任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备向核心网设备发送第四消息，所述第四消息用于指示所述终端设备请求在线签约NPN；
    所述第一接入网设备接收所述核心网设备发送的第五消息，所述第五消息用于指示所述终端设备在线签约NPN成功或指示所述终端设备在线签约失败。
  7. 一种通信方法，其特征在于，所述方法包括：
    终端设备接收第一接入网设备发送的第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
    所述终端设备向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
  8. 如权利要求7所述的方法，其特征在于，所述第一消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：支持在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示支持在线签约。
  9. 如权利要求7或8任一项所述的方法，其特征在于，所述第二消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第二指示信息，所述第二指示信息用于指示请求在线签约。
  10. 如权利要求7-9任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第一接入网设备发送的第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
  11. 如权利要求10所述的方法，其特征在于，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：在线签约成功的NPN的标识的信息或第三指示信息，所述第三指示信息用于指示在线签约成功。
  12. 一种通信方法，其特征在于，所述方法包括：
    核心网设备接收第一接入网设备发送的第一消息，所述第一消息用于指示所述终端设备请求在线签约NPN；
    所述核心网设备向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备在线签约NPN成功。
  13. 如权利要求12所述的方法，其特征在于，所述第一消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示请求在线签约。
  14. 如权利要求12所述的方法，其特征在于，所述第一消息用于第一接入网设备向核心网设备转发层三消息，所述方法还包括：
    所述核心网设备验证所述终端设备是否已签约第一小区所支持的至少一个NPN，所述第一小区为所述终端设备驻留或接入的所述第一接入网设备下的小区；
    若否，则所述核心网设备确定所述终端设备请求在线签约所述第一小区所支持的NPN。
  15. 如权利要求12所述的方法，其特征在于，所述第一消息包括请求在线签约的NPN的标识的信息，所述方法还包括：
    所述核心网设备验证所述请求在线签约的NPN是否为已签约的网络；
    若否，则所述核心网设备确定所述终端设备请求在线签约所述请求在线签约的NPN的标识的信息所对应的NPN。
  16. 一种通信装置，其特征在于，所述通信装置包括：
    发送模块，用于向终端设备发送第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
    接收模块，用于接收所述终端设备发送的第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
  17. 如权利要求16所述的装置，其特征在于，所述第一消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：支持在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示支持在线签约。
  18. 如权利要求16或17任一项所述的装置，其特征在于，所述第二消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第二指示信息，所述第二指示信息用于指示请求在线签约。
  19. 如权利要求16-18任一项所述的装置，其特征在于，
    所述发送模块，还用于向所述终端设备发送第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
  20. 如权利要求19所述的装置，其特征在于，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：在线签约成功的NPN的标识的信息或第三指示信息，所述第三指示信息用于指示在线签约成功。
  21. 如权利要求16-20任一项所述的装置，其特征在于，
    所述发送模块，还用于向核心网设备发送第四消息，所述第四消息用于指示所述终端设备请求在线签约NPN；
    所述接收模块，还用于接收所述核心网设备发送的第五消息，所述第五消息用于指示所述终端设备在线签约NPN成功或指示所述终端设备在线签约失败。
  22. 一种通信装置，其特征在于，所述装置包括：
    接收模块，用于接收第一接入网设备发送的第一消息，所述第一消息用于指示所述第一接入网设备下的小区支持在线签约NPN；
    发送模块，用于向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备请求在线签约NPN。
  23. 如权利要求22所述的装置，其特征在于，所述第一消息包括用于指示支持在线签约的NPN的信息，所述用于指示支持在线签约的NPN的信息包括以下至少一项：支持在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示支持在线签约。
  24. 如权利要求22或23所述的装置，其特征在于，所述第二消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第二指示信息，所述第二指示信息用于指示请求在线签约。
  25. 如权利要求22-24任一项所述的装置，其特征在于，
    所述接收模块，还用于接收所述第一接入网设备发送的第三消息，所述第三消息用于指示所述终端设备在线签约NPN成功。
  26. 如权利要求25所述的装置，其特征在于，所述第三消息包括用于指示在线签约成功的NPN的信息，所述用于指示在线签约成功的NPN的信息包括以下至少一项：在线签约成功的NPN的标识的信息或第三指示信息，所述第三指示信息用于指示在线签约成功。
  27. 一种通信装置，其特征在于，所述装置包括：
    接收模块，用于接收第一接入网设备发送的第一消息，所述第一消息用于指示所述终端设备请求在线签约NPN；
    发送模块，用于向所述第一接入网设备发送第二消息，所述第二消息用于指示所述终端设备在线签约NPN成功。
  28. 如权利要求27所述的装置，其特征在于，所述第一消息包括用于指示请求在线签约的NPN的信息，所述用于指示请求在线签约的NPN的信息包括以下至少一项：请求在线签约的NPN的标识的信息或第一指示信息，所述第一指示信息用于指示请求在线签约。
  29. 如权利要求27所述的装置，其特征在于，所述第一消息用于转发层三消息；所述装置还包括：
    处理模块，用于验证所述终端设备是否已签约第一小区所支持的至少一个NPN，所述第一小区为所述终端设备驻留或接入的所述第一接入网设备下的小区；若否，则确定所述终端设备请求在线签约所述第一小区所支持的NPN。
  30. 如权利要求27所述的装置，其特征在于，所述第一消息包括请求在线签约的NPN的标识的信息，所述装置还包括：
    处理模块，用于验证所述请求在线签约的NPN是否为已签约的网络；若否，则确定所述终端设备请求在线签约所述请求在线签约的NPN的标识的信息所对应的NPN。
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