WO2024067224A1 - 小区标识的更新方法与装置 - Google Patents

小区标识的更新方法与装置 Download PDF

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Publication number
WO2024067224A1
WO2024067224A1 PCT/CN2023/119543 CN2023119543W WO2024067224A1 WO 2024067224 A1 WO2024067224 A1 WO 2024067224A1 CN 2023119543 W CN2023119543 W CN 2023119543W WO 2024067224 A1 WO2024067224 A1 WO 2024067224A1
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WIPO (PCT)
Prior art keywords
message
network element
cell identifier
mbsr
identifier corresponding
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PCT/CN2023/119543
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English (en)
French (fr)
Inventor
朱方园
Original Assignee
华为技术有限公司
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Publication of WO2024067224A1 publication Critical patent/WO2024067224A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application relates to the field of communication technology, and in particular to a method and device for updating a cell identifier.
  • an integrated access and backhaul (IAB) node integrating wireless access link and wireless backhaul link is proposed.
  • the IAB node accesses a base station serving it through a wireless interface in a similar way to a terminal.
  • the base station is called a donor base station.
  • the wireless interface link between the IAB node and the donor base station is called a backhaul link.
  • the IAB node provides functions and services similar to those of an ordinary base station to the terminals accessing its cell.
  • the communication link between the IAB node and the terminal is called an access link.
  • IAB nodes can be deployed outdoors or indoors in scenarios where it is difficult to deploy wired transmission networks. They are usually fixed on the ground or in buildings and are not mobile.
  • terminal devices access IAB nodes at fixed locations, and the network can determine the location of the terminal device based on the uplink positioning message (UL positioning message) sent by the terminal device to the network and the cell information of the IAB node.
  • the uplink positioning message contains the measurement results of the terminal device based on which cell and the cell identifier.
  • VMR nodes can be understood as IAB nodes with mobility.
  • terminal devices can use the cell signals of VMR nodes for positioning measurements, the cell locations of VMR nodes are constantly changing, and cell identifiers are also constantly changing, so the network cannot obtain updated cell identifiers in a timely manner.
  • the present application provides a method and device for updating a cell identifier, so that a network can timely obtain the latest cell identifier broadcast by a cell.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including a first device and a second device, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: when the first device learns that the second device has mobility, the first device sends a first message, and the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; when the cell identifier corresponding to the second device changes, the first device receives a second message, and the second message is used to notify the updated cell identifier corresponding to the second device.
  • the first device when the first device learns that the cell corresponding to the second device is mobile, it can initiate a subscription process to timely learn about the latest cell identifier broadcast by the second device. In this way, the first device obtains the current location information of the second device based on the latest cell identifier broadcast by the second device. The location information can be used to locate the terminal device connected to the second device, thereby improving the positioning accuracy of the terminal device.
  • the first message mentioned above may also be referred to as a subscription request or a subscription message
  • the second message mentioned above may also be referred to as a subscription response or a subscription notification.
  • the communication system also includes a third device, and the first device sends a first message, including: the first device sends a first message to the third device, and the first message is used to subscribe to the update event of the cell identifier corresponding to the second device; the first device receives a second message, including: the first device receives the second message through the third device.
  • the first device initiates a subscription process, specifically sends a subscription request to the third device, and when the cell identifier broadcast by the second device changes, receives a subscription notification from the third device to promptly learn the latest cell identifier broadcast by the second device.
  • the first device is a positioning management function LMF network element
  • the third device is an access and mobility management function AMF network element.
  • the LMF network element initiates the subscription process, specifically sending a subscription request to the AMF network element.
  • a subscription notification is received from the AMF network element to promptly obtain the latest cell identifier broadcast by the second device.
  • the first device is an AMF network element
  • the third device is an access network device.
  • the AMF network element initiates a subscription process, specifically sending a subscription request to the access network device.
  • a subscription notification is received from the access network device to promptly obtain the latest cell identifier broadcast by the second device.
  • the above-mentioned access network device may be a host base station.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including a second device, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the second device receives a first message, and the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; when the cell identifier corresponding to the second device changes, the second device sends a second message, and the second message is used to notify the updated cell identifier corresponding to the second device.
  • the second device receives the first message and learns that a device has initiated a subscription event for updating the cell identifier corresponding to the second device.
  • the second device can return a second message to the device that sent the first message to notify it of the change in the broadcast cell identifier, thereby ensuring that the device that initiated the subscription event promptly learns of the latest cell identifier broadcast by the second device.
  • the first message mentioned above may also be referred to as a subscription request or a subscription message
  • the second message mentioned above may also be referred to as a subscription response or a subscription notification.
  • the communication system also includes a first device and a third device, and the second device receives a first message, including: the second device receives the first message from the first device through the third device; the second device sends the second message, including: the second device sends the second message to the first device through the third device.
  • the first device is a device that initiates a subscription event for updating the cell identifier corresponding to the second device.
  • the first device sends a subscription request to the second device through a third device.
  • the second device can send a subscription notification to the first device through the third device, thereby ensuring that the first device that initiates the subscription event is promptly informed of the latest cell identifier broadcast by the second device.
  • the first device is a positioning management function LMF network element
  • the third device is an access and mobility management function AMF network element.
  • the LMF network element is the device that initiates the subscription event for updating the cell identifier corresponding to the second device.
  • the LMF network element sends a subscription request to the second device through the AMF network element.
  • the second device can send a subscription notification to the LMF network element through the AMF network element, thereby ensuring that the LMF network element is aware of the latest cell identifier broadcast by the second device in a timely manner.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including a second device and a third device, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the third device receives a first message, and the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; when the third device learns that the cell identifier corresponding to the second device has changed, the third device sends a second message, and the second message is used to notify the updated cell identifier corresponding to the second device.
  • the third device receives the first message and learns that a device has initiated a subscription event for updating the cell identifier corresponding to the second device.
  • the third device learns that the cell identifier corresponding to the second device has changed, it can return a second message to the device that sent the first message to notify the second device of the change in the cell identifier broadcast, thereby ensuring that the device that initiated the subscription event is notified in a timely manner.
  • the latest cell identifier broadcast by the second device is a broadcast by the third device.
  • the first message mentioned above may also be referred to as a subscription request or a subscription message
  • the second message mentioned above may also be referred to as a subscription response or a subscription notification.
  • the communication system also includes a first device, and the third device receives a first message, including: the third device receives the first message from the first device; the third device sends a second message, including: the third device sends the second message to the first device.
  • the third device receives the subscription request from the first device and can learn that the first device is the device that initiates the subscription event for the cell identifier corresponding to the second device.
  • the third device learns that the cell identifier corresponding to the second device has changed, it can send a subscription notification to the first device to ensure that the first device is informed of the latest cell identifier broadcast by the second device in a timely manner.
  • the first device is an access and mobility management function AMF network element
  • the third device is an access network device.
  • the access network device receives a subscription request from the AMF network element, and can learn that the AMF network element is the device that initiates the subscription event for updating the cell identity corresponding to the second device.
  • the access network device learns that the cell identity corresponding to the second device has changed, it can send a subscription notification to the AMF network element to ensure that the AMF network element is aware of the latest cell identity broadcast by the second device in a timely manner.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including an access network device, a second device, and an access and mobility management function AMF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the access network device receives a third message from the second device, and the third message includes the identifier of the second device; the access network device sends a fourth message to the AMF network element, and the fourth message includes the identifier of the second device and the cell identifier corresponding to the second device.
  • the second device is connected to the network through the access network device.
  • the access network device can send the identifier of the second device and the cell identifier corresponding to the second device to the AMF network element, so that the AMF network element stores the identifier of the second device and the cell identifier corresponding to the second device, so that other network elements, such as the LMF network element, can obtain the cell identifier corresponding to the second device from the AMF network element.
  • the third message includes an F1 establishment request (F1 step request) message.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the method also includes: the access network device receives a fifth message from the second device, and the fifth message is used to indicate the release of the F1 link; the access network device sends a sixth message to the AMF network element, and the sixth message is used to instruct the AMF network element to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the access network device receives an instruction to release F1 and will release the communication link with the second device.
  • the access network device can notify the AMF network element so that the AMF network element deletes the identifier of the invalid second device and the cell identifier corresponding to the second device.
  • the fourth message or the sixth message sent by the access network device to the AMF network element includes an NG configuration update message.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including an access network device, a second device, an access and mobility management function AMF network element and a network storage function NRF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the AMF network element receives a fourth message from the access network device, the fourth message includes the identifier of the second device and the cell identifier corresponding to the second device; the AMF network element sends a seventh message to the NRF network element, and the seventh message includes the identifier of the second device and the cell identifier corresponding to the second device.
  • the AMF network element may send the identifier of the second device and the cell identifier corresponding to the second device to the NRF network element so that the NRF network element stores the identifier of the second device.
  • the NRF network element can obtain the cell identifier corresponding to the second device from the LMF network element.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the method also includes: the AMF network element receives a sixth message from the access network device, and the sixth message is used to instruct the AMF network element to delete the identifier of the second device and the cell identifier corresponding to the second device; the AMF network element sends an eighth message to the NRF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the AMF network element after receiving an instruction to delete the identifier of the second device and the cell identifier corresponding to the second device, the AMF network element synchronizes the instruction to the NRF network element so that the NRF network element deletes the identifier of the invalid second device and the cell identifier corresponding to the second device.
  • the AMF network element receives a fourth message or a sixth message from the access network device including an NG configuration update message.
  • the seventh message or the eighth message sent by the AMF network element to the NRF network element includes a network element update message.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including an access network device and a second device, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the second device sends a third message to the access network device, and the third message includes the identifier of the second device.
  • the third message may also include a TAC supported by the cell of the second device.
  • the third message may further include a cell identifier supported by the cell of the second device.
  • the second device sends a third message to inform the access network device of the identifier of the second device, so that after the access network device obtains the cell identifier corresponding to the second device (which may be the cell identifier assigned by the access network device to the second device, or the cell identifier broadcast by the second device), the cell identifier corresponding to the second device and the identifier of the second device are sent to the network, so that the network can promptly know the cell identifier corresponding to the second device and the identifier of the second device.
  • the access network device obtains the cell identifier corresponding to the second device (which may be the cell identifier assigned by the access network device to the second device, or the cell identifier broadcast by the second device)
  • the cell identifier corresponding to the second device and the identifier of the second device are sent to the network, so that the network can promptly know the cell identifier corresponding to the second device and the identifier of the second device.
  • the third message includes an F1 establishment request (F1 step request) message.
  • the method further includes: the second device sends a fifth message to the access network device, and the fifth message is used to indicate the release of the F1 link.
  • the second device sends the fifth message to cause the access network device to release the communication link with the second device.
  • the access network device can delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the access network device can also notify the network side to delete the identifier of the invalid second device and the cell identifier corresponding to the second device.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including a second device, an access and mobility management function AMF network element and a network storage function NRF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the NRF network element receives a seventh message from the AMF network element, and the seventh message includes the identifier of the second device and the cell identifier corresponding to the second device; the NRF network element stores the identifier of the second device and the cell identifier corresponding to the second device.
  • the NRF network element obtains the identifier of the second device and the cell identifier corresponding to the second device through the AMF network element, and the NRF network element stores the identifier of the second device and the cell identifier corresponding to the second device.
  • other network elements such as LMF network elements, can obtain the cell identifier corresponding to the second device from the NRF network element.
  • the method also includes: the NRF network element receives an eighth message from the AMF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device; the NRF network element deletes the identifier of the second device and the cell identifier corresponding to the second device.
  • the NRF network element promptly deletes the identifier of the invalid second device and the cell identifier corresponding to the second device based on the deletion indication sent by the AMF network element.
  • the NRF network element receives the seventh message or the eighth message from the AMF network element including a network element update message.
  • the communication system also includes a positioning management function LMF network element
  • the method also includes: the NRF network element receives a query request from the LMF network element, and the query request is used to query the identifier of the second device associated with the cell identifier corresponding to the second device; the NRF network element sends a query response to the LMF network element, and the query response includes the identifier of the second device associated with the cell identifier corresponding to the second device.
  • the present application provides a method for updating a cell identifier, which is applied to a communication system including a second device, a network storage function NRF network element and a positioning management function LMF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the method includes: the LMF network element receives positioning measurement data from a terminal device, the terminal device accesses the network through the second device, and the positioning measurement data includes the cell identifier corresponding to the second device; the LMF network element sends a query request to the NRF network element, and the query request is used to query the identifier of the second device associated with the cell identifier corresponding to the second device; the LMF network element receives a query response from the NRF network element, and the query response includes the identifier of the second device associated with the cell identifier corresponding to the second device.
  • the present application provides a communication device for a wireless backhaul network, the wireless backhaul network comprising a first device and a second device, the second device being a mobile access backhaul integrated node or a mobile base station relay node, the device comprising: a sending unit, configured to send a first message upon learning that the second device has mobility capability, the first message being used to subscribe to an update event of a cell identifier corresponding to the second device; a receiving unit, configured to receive a second message when the cell identifier corresponding to the second device changes, the second message being used to notify the updated cell identifier corresponding to the second device.
  • the first device comprises the communication device.
  • the wireless backhaul network also includes a third device, and the sending unit is used to send a first message to the third device, and the first message is used to subscribe to the update event of the cell identifier corresponding to the second device; the receiving unit is used to receive the second message through the third device.
  • the first device is a positioning management function LMF network element
  • the third device is an access and mobility management function AMF network element.
  • the first device is an AMF network element
  • the third device is an access network device.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a communication device for a wireless backhaul network
  • the wireless backhaul network includes a second device
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node
  • the device includes: a receiving unit, used to receive a first message, the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; a sending unit, used to send a second message when the cell identifier corresponding to the second device changes, the second message is used to notify the updated cell identifier corresponding to the second device.
  • the second device includes the communication device.
  • the wireless backhaul network also includes a first device and a third device, the receiving unit is used to receive the first message from the first device through the third device; the sending unit is used to send the second message to the first device through the third device.
  • the first device is a positioning management function LMF network element
  • the third device is an access and mobility management function AMF network element.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a communication device for a wireless backhaul network, the wireless backhaul network comprising a second device and a third device, the second device being a mobile access backhaul integrated node or a mobile base station relay node, the device comprising: a receiving unit, configured to receive a first message, the first message being used to subscribe to an update event of a cell identifier corresponding to the second device; a sending unit, configured to send a second message when learning that the cell identifier corresponding to the second device has changed, the second message being used to notify the updated cell identifier corresponding to the second device.
  • the third device comprises the communication device.
  • the wireless backhaul network further includes a first device, the receiving unit is configured to receive the first message from the first device; the sending unit is configured to send the first message to the first device. Describe the second message.
  • the first device is an access and mobility management function AMF network element
  • the third device is an access network device.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the present application provides a communication device for a wireless backhaul network, the wireless backhaul network comprising an access network device, a second device, and an access and mobility management function AMF network element, the second device being a mobile access backhaul integrated node or a mobile base station relay node, the device comprising: a receiving unit, configured to receive a third message from the second device, the third message comprising an identifier of the second device; a sending unit, configured to send a fourth message to the AMF network element, the fourth message comprising an identifier of the second device and a cell identifier corresponding to the second device.
  • the access network device comprises the communication device.
  • the third message includes an F1 establishment request (F1 step request) message.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the receiving unit is also used to receive a fifth message from the second device, and the fifth message is used to indicate the release of the F1 link;
  • the sending unit is also used to send a sixth message to the AMF network element, and the sixth message is used to instruct the AMF network element to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the fourth message or the sixth message sent by the sending unit to the AMF network element includes an NG configuration update (NG configuration update) message.
  • the present application provides a communication device for a wireless backhaul network, wherein the wireless backhaul network includes an access network device, a second device, an access and mobility management function AMF network element, and a network storage function NRF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the device includes: a receiving unit, configured to receive a fourth message from the access network device, wherein the fourth message includes an identifier of the second device and a cell identifier corresponding to the second device; and a sending unit, configured to send a seventh message to the NRF network element, wherein the seventh message includes an identifier of the second device and a cell identifier corresponding to the second device.
  • the AMF network element includes the communication device.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the receiving unit is also used to receive a sixth message from the access network device, and the sixth message is used to instruct the AMF network element to delete the identifier of the second device and the cell identifier corresponding to the second device;
  • the sending unit is also used to send an eighth message to the NRF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the fourth message or the sixth message received by the receiving unit from the access network device includes an NG configuration update message.
  • the seventh message or the eighth message sent by the sending unit to the NRF network element includes a network element update message.
  • the present application provides a communication device for a wireless backhaul network, the wireless backhaul network comprising an access network device and a second device, the second device being a mobile access backhaul integrated node or a mobile base station relay node, the device comprising: a sending unit, configured to send a third message to the access network device, the third message comprising an identifier of the second device.
  • the second device comprises the communication device.
  • the third message includes an F1 establishment request (F1 step request) message.
  • the sending unit is further used to send a fifth message to the access network device, and the fifth message is used to indicate the release of the F1 link.
  • the present application provides a communication device for a wireless backhaul network, wherein the wireless backhaul network includes a second device, an access and mobility management function AMF network element, and a network storage function NRF network element, wherein the second device is a mobile access backhaul
  • the integrated node or mobile base station relay node comprises: a receiving unit, configured to receive a seventh message from the AMF network element, wherein the seventh message comprises an identifier of the second device and a cell identifier corresponding to the second device; and a storage unit, configured to store an identifier of the second device and a cell identifier corresponding to the second device.
  • the NRF network element comprises the communication device.
  • the receiving unit is also used to receive an eighth message from the AMF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device; the storage unit is also used to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the receiving unit receives the seventh message or the eighth message from the AMF network element including a network element update message.
  • the wireless backhaul network also includes a positioning management function LMF network element, and the receiving unit is also used to receive a query request from the LMF network element, and the query request is used to query the identifier of the second device associated with the cell identifier corresponding to the second device; the device also includes: a sending unit, used to send a query response to the LMF network element, and the query response includes the identifier of the second device associated with the cell identifier corresponding to the second device.
  • the present application provides a communication device for a wireless backhaul network, wherein the wireless backhaul network includes a second device, a network storage function NRF network element and a positioning management function LMF network element, wherein the second device is a mobile access backhaul integrated node or a mobile base station relay node, and the device includes: a receiving unit, configured to receive positioning measurement data from a terminal device, wherein the terminal device accesses the network through the second device, and the positioning measurement data includes a cell identifier corresponding to the second device; a sending unit, configured to send a query request to the NRF network element, wherein the query request is used to query an identifier of the second device associated with the cell identifier corresponding to the second device; and the receiving unit is further configured to receive a query response from the NRF network element, wherein the query response includes an identifier of the second device associated with the cell identifier corresponding to the second device.
  • the LMF network element includes the communication device.
  • the LMF network element includes the communication device
  • the present application provides a communication device for a wireless backhaul network, comprising: a transceiver, a memory and a processor; the transceiver is used to receive or send signals or data, the memory is used to store program instructions or data, and the processor is used to call the program instructions in the memory to execute a method as in any one of the above aspects or any possible implementation of any one of the above aspects.
  • the present application provides a computer-readable medium storing a program code for computer execution, wherein the program code includes instructions for executing a method as in any one of the above aspects or any one possible implementation of any one of the above aspects.
  • the present application provides a computer program product, which includes a computer program code.
  • the computer program code runs on a computer, the computer implements the method in any one of the above aspects or any possible implementation method of any one of the above aspects.
  • the present application provides a chip, comprising: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory.
  • the processor is used to execute the method in any one of the above aspects or any possible implementation of any one of the above aspects.
  • FIG1 is an architecture diagram of an IAB network system applicable to the technical solution of the present application.
  • FIG2 is a schematic diagram of an IAB network architecture and interface applicable to the technical solution of the present application.
  • FIG3 is a flow chart of a communication method applicable to the IAB network architecture shown in FIG2 ;
  • FIG4 is a schematic diagram of a communication system including MBSR
  • FIG5 is a schematic diagram of a positioning process of an MBSR cell provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of a method for updating a cell identifier according to an embodiment of the present application.
  • FIG7 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application.
  • FIG8 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application.
  • FIG9 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application.
  • FIG10 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application.
  • FIG11 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application.
  • FIG12 is a schematic diagram of the structure of a communication device for a wireless backhaul network provided in an embodiment of the present application.
  • FIG13 is a schematic diagram of the structure of another communication device for a wireless backhaul network provided in an embodiment of the present application.
  • the communication systems mentioned in the embodiments of the present application include but are not limited to: narrowband Internet of Things (NB-IoT) system, wireless local access network (WLAN) system, long term evolution (LTE) system, 5G mobile communication system or evolved communication system after 5G.
  • NB-IoT narrowband Internet of Things
  • WLAN wireless local access network
  • LTE long term evolution
  • 5G mobile communication system or evolved communication system after 5G.
  • an IAB network system includes at least one base station 100, one or more terminal devices (terminal) 101 served by the base station 100, one or more relay nodes (ie, IAB nodes) 110, and one or more terminal devices 111 served by the IAB node 110.
  • the base station 100 is called a donor base station (donor next generation node B, DgNB), and the IAB node 110 is connected to the base station 100 via a wireless backhaul link 113.
  • the donor base station is also referred to as a donor node in this application, i.e., a donor node.
  • the IAB network is also referred to as a wireless backhaul network.
  • the base station 100 includes but is not limited to: evolved node base (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home evolved NodeB (or home node B, HNB), baseband unit (BBU), evolved LTE (eLTE) base station, NR base station (next generation node B, gNB), etc.
  • eNB evolved node base
  • RNC radio network controller
  • NB node B
  • BSC base station controller
  • BTS base transceiver station
  • HNB home evolved NodeB
  • BBU baseband unit
  • eLTE evolved LTE
  • gNB next generation node B
  • Terminal devices include, but are not limited to: user equipment (UE), mobile station, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, terminal, wireless communication device, user agent, station (ST) in wireless local area network (WLAN), cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication function, computing device, other processing equipment connected to wireless modem, vehicle-mounted equipment, wearable device, mobile station in future 5G network and terminal equipment in future evolved public land mobile network (PLMN) network.
  • UE user equipment
  • PLMN public land mobile network
  • IAB node is a specific name for a relay node and does not limit the solution of the present application. It can be a network type relay with forwarding function (such as a base station) or a terminal type relay with forwarding function (such as a terminal device).
  • the IAB network system may also include multiple other IAB nodes, for example, IAB node 120 and IAB node 130.
  • IAB node 120 is connected to IAB node 110 via wireless backhaul link 123 to access the network.
  • IAB node 130 is connected to IAB node 110 via wireless backhaul link 133 to access the network.
  • IAB node 120 serves one or more terminal devices 121, and IAB node 130 serves one or more terminal devices 131.
  • both IAB node 110 and IAB node 120 are connected to the network via wireless backhaul link.
  • wireless backhaul link is viewed from the perspective of relay node, for example, wireless backhaul link 113 is the backhaul link of IAB node 110, and wireless backhaul link 123 is the backhaul link of IAB node 120.
  • Relay node can be connected to the network via multiple levels of wireless relay nodes. It should be understood that the use of the IAB node in this application is only for the purpose of description, and does not mean that the solution of this application is only used in the NR scenario. In this application, the IAB node can generally refer to any node or device with a relay function. The use of the IAB node and the relay node in this application should be understood to have the same meaning.
  • a node that supports integrated access and backhaul is referred to as a wireless backhaul node.
  • the wireless backhaul node may also be referred to as a relay node (RN), and in 5G, the wireless backhaul node may also be referred to as an IAB node (IAB node).
  • RN relay node
  • IAB node IAB node
  • the wireless backhaul node may have the role of a mobile terminal (MT) and the role of a distributed unit (DU), that is, the wireless backhaul node may include at least one MT unit, and the wireless backhaul node may establish a backhaul link between the at least one MT unit and at least one parent node (IAB donor or other IAB nodes) of the wireless backhaul node.
  • the DU part of the IAB node may provide access services for the MT part of the terminal or other IAB nodes. For ease of description, the following is an example of an IAB node.
  • the IAB node can provide wireless access services for the terminal device, and the data of the terminal device (which may include user plane data and control plane signaling) is transmitted by connecting the IAB node to the host node through a wireless backhaul link.
  • the data of the terminal device which may include user plane data and control plane signaling
  • the donor node is also called an IAB donor or a donor gNodeB (DgNB).
  • the DgNB can be an access network element with complete base station functions, or it can be an access network element in a separated form including a centralized unit (CU) and a distributed unit (DU).
  • the CU mainly processes non-real-time wireless high-level protocol stack functions (including the radio resource control RRC layer/packet data convergence protocol PDCP layer), and the DU mainly processes physical layer functions and layer 2 functions with high real-time requirements (physical PHY layer/medium access control MAC layer/radio link control RLC layer).
  • the DgNB is connected to the core network element serving the terminal device, for example, to the 5G core network (5G core, 5GC), and provides wireless backhaul functions for the IAB node.
  • the embodiment of the present application refers to the centralized unit of the host node as the donor CU, and the distributed unit of the host node as the donor DU.
  • the donor CU may also be in a form separated by a control plane (CP) or a user plane (UP).
  • CP control plane
  • UP user plane
  • a CU includes a CU-CP and multiple CU-UPs, which is not limited in the embodiment of the present application.
  • the wireless link used by the terminal device to communicate with the node that provides wireless access services for it (for example, IAB node, host node or host DU), including the access link for uplink transmission and the access link for downlink transmission.
  • the access link for uplink transmission is also called the uplink access link or access uplink, and its transmission direction is from the terminal device to the node;
  • the access link for downlink transmission is also called the downlink access link or access downlink, and its transmission direction is from the node to the terminal device.
  • a backhaul link refers to a wireless link used when a certain IAB node communicates with its parent node, and its parent node can be an IAB node or a host node, including a backhaul link for uplink transmission and a backhaul link for downlink transmission.
  • the parent node of the IAB node 120 is the IAB node 110
  • the parent node of the IAB node 110 is the base station 100.
  • the backhaul link used for uplink transmission is also called an uplink backhaul link or a backhaul uplink, and its transmission direction is from the IAB node to the parent node of the IAB node.
  • the backhaul link used for downlink transmission is also called a downlink backhaul link or a backhaul downlink, and its transmission direction is from the parent node of the IAB node to the IAB node.
  • the IAB structure includes a 5G core network (5GC), an NG radio access network (NG RAN) including a base station (gNB), an IAB host (IAB donor) and an IAB node (IAB node), and the IAB node accesses the network through the IAB host.
  • the 5GC is connected to one or more gNBs (or IAB hosts) through the NG interface.
  • the IAB host includes a donor CU (donor CU) and a donor DU (donor DU), and the donor CU and the donor DU are connected through the F1 interface.
  • the donor CU is connected to the 5GC through the NG interface, and the donor CU is connected to the gNB through the Xn-C interface.
  • the IAB node includes an IAB MT and an IAB DU, and the IAB MT is connected to the donor DU through the NR Uu interface, and the IAB DU is connected to the donor CU through the F1 interface.
  • FIG3 is a flow chart of a communication method applicable to the IAB network architecture shown in FIG2 .
  • the communication method includes:
  • Step 301 The IAB node establishes an RRC connection with the radio access network (RAN) serving the IAB node through the MT function.
  • RAN radio access network
  • the IAB MT performs cell selection, selects a suitable cell and completes the RRC connection establishment, then indicates to the network that it has mobility capability (that is, indicates that it is an IAB node) through an RRC Setup Complete message, and sends a registration request message through the RAN serving the IAB MT.
  • the initial access of the IAB node is the same as that of a regular UE.
  • Step 302. RAN sends a registration request message to the 5G core network via an N2 message, and indicates in the N2 message that the registering network is an IAB node, and the network will authenticate the IAB node.
  • Step 303 IAB MT completes the registration process and successfully registers into the network.
  • Step 304 IAB MT initiates session establishment, and the network allocates an Internet Protocol IP address to IAB MT, which IAB MT uses to interact with operation administration and maintenance (OAM).
  • OAM operation administration and maintenance
  • Step 305 OAM configures the IAB node with cell information, including cell identification, tracking area code (TAC), etc.
  • cell information including cell identification, tracking area code (TAC), etc.
  • Step 306 The IAB DU selects a suitable IAB donor and sends an F1 establishment request to the donor CU of the IAB donor.
  • the F1 establishment request message includes the cell information supported by the IAB DU, such as cell identification, TAC and other information.
  • Step 307. The donor CU activates the cell of the IAB DU.
  • the donor DU can send configuration information to the 5G core network through the configuration update process, and the configuration information carries the TAC information.
  • donor CU sends an F1 setup response to the IAB DU.
  • the F1 setup response includes the activated cell information (cells to be activated list).
  • the activated cell information includes the cell ID, TAC and other information.
  • the above steps 306 to 308 are the F1 establishment process of the IAB node.
  • the IAB node is usually a fixed relay device on the ground.
  • the UE sends an uplink positioning message (UL positioning message) to the network.
  • the uplink positioning message contains the measurement result, and the measurement result contains the cell identifier.
  • the network (such as the location management service LMF network element) can determine which cell the UE is based on based on the cell identifier. Further, the network determines the location of the UE based on the location of the cell and the measurement results. It can be understood that the existing cells are fixed, and the network can know the geographical location information of the cell in advance and locate the UE based on the measurement results reported by the UE.
  • FIG. 4 is a schematic diagram of a communication system including MBSR.
  • MBSR mobile base station relay
  • a user carries a smart terminal in a vehicle, and the MBSR installed in the vehicle can provide 5G access services to the users in the vehicle.
  • the location of the MBSR cell keeps changing.
  • the smart terminal carried by the user can use the MBSR cell signal for positioning measurement, the network does not know the current location of the cell.
  • FIG5 is a schematic diagram of the positioning process of the MBSR cell provided in an embodiment of the present application. As shown in FIG5 , the positioning process includes:
  • Step 500 The LMF network element learns whether a cell corresponding to a cell identifier is a mobile cell through a transmission-reception point (TRP) information interaction process.
  • Step 500 may include:
  • Step 500A The LMF network element sends an NRPPa TRP information request to the donor gNB.
  • Step 500B The donor base station sends a F1TRP information request to the MBSR, which is one of the mobile relay devices within the coverage area of the donor base station.
  • Step 500C MBSR sends an F1TRP information response to the donor base station, the F1TRP information response includes a mobility indication, the mobility indication is used to inform MBSR that the cell is a mobile cell.
  • the F1TRP information response includes the cell identifier of MBSR.
  • Step 500D The host base station sends an NRPPa TRP information response to the LMF network element, where the NRPPa TRP information response includes a mobility indication.
  • the NRPPa TRP information response includes a cell identifier of the MBSR.
  • Step 501 When the network needs to initiate a positioning process for a certain UE, the access and mobility management function AMF network element triggers the initiation of positioning for the UE.
  • Step 502. The AMF network element sends a positioning request to the LMF network element, such as sending Nlmf_Location_Determine location Request.
  • the positioning request is used to request the LMF network element to initiate positioning for the UE.
  • Step 503. Execute the existing positioning process. Specifically, when the UE uses the MBSR cell signal to perform positioning measurement, the UE will carry positioning measurement data in the uplink positioning message, where the positioning measurement data includes the cell ID.
  • the LMF network element may learn that the cell corresponding to the cell identifier included in the positioning measurement data has mobility, and the LMF network element may perform the following steps:
  • Step 504A The LMF network element sends a cell location request to the host base station, such as sending an NRPPa TRP information request, and the NRPPa TRP information request includes the cell identifier of the MBSR.
  • Step 504B The donor base station sends a cell location request to the MBSR, such as sending an F1TRP information request, and the F1TRP information request includes the cell identifier of the MBSR.
  • Step 504C MBSR sends a cell location response to the donor base station, such as sending an F1TRP information response, where the F1TRP information response includes the location information of the cell corresponding to the cell identifier of MBSR.
  • Step 504D The donor base station sends a cell location response to the LMF network element, such as sending an NRPPa TRP information response, where the NRPPa TRP information response includes the location information of the cell corresponding to the cell identifier of the MBSR.
  • the LMF network element can obtain the latest location information of the mobile cell.
  • Step 505. The LMF network element sends a positioning response to the AMF network element, where the positioning response includes the location of the UE.
  • the LMF network element determines the location of the UE according to the positioning measurement data reported by the UE in step 503 and the location information of the cell corresponding to the cell identifier of the MBSR in step 504D.
  • the cell ID broadcast by the same MBSR may change during the movement of the MBSR, which leads to a problem: the cell ID of the MBSR contained in the uplink positioning message of the UE may be different from the cell ID of the MBSR stored in the LMF network element (i.e., the cell ID of the MBSR obtained through the above step 500).
  • the cell ID of the MBSR stored in the LMF network element will be invalid, resulting in inaccurate cell location information obtained through the process from step 504A to step 504D based on the cell ID of the MBSR stored in the LMF network element.
  • the cell ID of the MBSR is Cell ID#1, and the cell ID of the MBSR changes from Cell ID#1 to Cell ID#2 during the movement of the MBSR.
  • the UE uses the cell signal of MBSR to perform positioning measurement, the UE will carry positioning measurement data in the uplink positioning message, where the cell identifier contained in the positioning measurement data is Cell ID#2.
  • LMF cannot determine whether the cell corresponding to Cell ID#2 is mobile. Since LMF only saves the cell corresponding to Cell ID#1 as mobile, LMF will not initiate the process from step 504A to step 504D at this time.
  • the UE location information calculated by LMF based only on the positioning measurement data carried in the uplink positioning message is inaccurate. It can be seen that the main reason for the poor UE positioning result is that the cell identifier of MBSR has changed and the network does not know its latest cell identifier.
  • the embodiment of the present application proposes a method for updating a cell identifier.
  • the network learns that a certain cell is a mobile cell, it can trigger a cell identifier update event to be subscribed to the MBSR corresponding to the cell, so as to timely obtain the latest cell identifier broadcast by the MBSR.
  • the network element that executes the above subscription process can be an LMF network element or an AMF network element, which is not limited by the embodiment of the present application.
  • the MBSR can send the MBSR identifier to the host base station serving the MBSR, and the host base station sends the information of the MBSR cell (including the MBSR identifier, the cell identifier, and the mobility indication) to the network storage function NRF network element of the core network.
  • the information of the MBSR cell changes, the information stored in the NRF will be updated accordingly, thereby ensuring that the cell identifier of a certain MBSR obtained by the network is the latest.
  • any of the above schemes can ensure that the network promptly obtains the latest cell identifier broadcast by the MBSR, thereby improving the positioning effect of the UE accessing the MBSR.
  • FIG6 is a schematic diagram of a method for updating a cell identity in an embodiment of the present application.
  • the method can be applied to a communication system including a first device, a second device, and a third device.
  • FIG6 takes the first device as an LMF network element, the second device as a mobile integrated backhaul node (mobile IAB) or a mobile base station relay MBSR node (hereinafter described as MBSR), and the third device as an AMF as an example to illustrate the scheme.
  • the method includes:
  • Step 601. The LMF network element sends a first message to the AMF network element, where the first message is used to subscribe to an update event of a cell identifier corresponding to the MBSR.
  • the LMF network element when the LMF network element learns that the MBSR has mobility capability, the LMF network element sends a first message to the AMF network element.
  • the MBSR sends a mobility indication to an access network device serving the MBSR, and the LMF network element learns that the MBSR has mobility capability through the access network device.
  • the first message carries an MBSR identifier and a subscription event
  • the subscription event is used to subscribe to an update of a cell identifier corresponding to the MBSR.
  • the first message may be a service operation Namf_EventExposure_Subscribe.
  • Step 602 The AMF network element sends a first message to the MBSR.
  • the first message includes an identifier of the MBSR.
  • Step 603. MBSR sends a second message to the AMF network element, where the second message is used to notify the updated cell identifier corresponding to the second device.
  • the MBSR when the cell identifier corresponding to the MBSR changes, the MBSR sends a second message to the AMF network element.
  • the second message includes the cell identifier corresponding to the MBSR.
  • the second message also includes the identifier of the MBSR.
  • the MBSR moves within the coverage of the same access network device, and the MBSR broadcasts its new cell identifier. At this time, the MBSR can send a second message to the AMF network element.
  • the MBSR moves from access network device 1 to access network device 2, and the MBSR broadcasts its new cell ID. At this time, the MBSR may send a second message to the AMF network element.
  • the new cell ID may be the cell ID of access network device 2.
  • Step 604 The AMF network element sends a second message to the LMF network element.
  • the LMF network element after receiving the second message, the LMF network element locally updates the cell identifier corresponding to the MBSR.
  • the access network device may be a host base station.
  • the LMF network element when the LMF network element learns that the cell corresponding to the MBSR has mobility, the LMF network element can initiate a subscription process to promptly learn about the latest cell identifier broadcast by the MBSR. In this way, the LMF network element obtains the current location information of the MBSR based on the latest cell identifier broadcast by the MBSR, and determines the location information of the UE based on the positioning measurement data reported by the UE connected to the network through the MBSR and the acquired current location information of the MBSR.
  • the cell identifier of the MBSR in the above positioning measurement data can be consistent with the cell identifier of the MBSR locally stored by the LMF network element, which can improve the positioning accuracy of the UE.
  • FIG7 is a schematic diagram of another cell identifier updating method of an embodiment of the present application. As shown in FIG7 , the cell identifier updating method of the present embodiment includes:
  • the F1 establishment process is an existing process, and reference may be made to the existing technology.
  • Step 702. The LMF network element sends an NRPPa TRP information request to the host base station 1.
  • the NRPPa TRP information request is used to request the host base station 1 to provide detailed information of the TRP of the host base station 1 (such as the geographic coordinates of the TRP).
  • Step 703. Host base station 1 sends an F1TRP information request to the MBSR DU.
  • MBSR DU sends an F1TRP information response to the host base station 1.
  • the F1TRP information response includes the identifier of the MBSR MT (e.g., Generic Public Subscription Identifier (GPSI)), the cell identifier of the MBSR (e.g., Next generation Cell Global Identifier (NR CGI)) and the mobility indication (mobile indication), and the mobility indication is used to notify the MBSR that it has mobility capability.
  • GPSI Generic Public Subscription Identifier
  • NR CGI Next generation Cell Global Identifier
  • mobile indication mobile indication
  • Host base station 1 sends an NRPPa TRP information response to the LMF network element.
  • the NRPPa TRP information response includes the identifier of the MBSR MT, the cell identifier of the MBSR, and the mobility indication.
  • the LMF network element can learn that the MBSR has mobility (or, the cell corresponding to the MBSR has mobility).
  • the NRPPa TRP information response includes the TRP information of the host base station 1, and the TRP information includes detailed information of one or more child nodes (e.g., one or more MBSRs) of the host base station 1.
  • the TRP information includes detailed information of one or more child nodes (e.g., one or more MBSRs) of the host base station 1.
  • Step 706 The LMF network element locally stores the correspondence between the MBSR MT identifier, cell identifier and mobility indication.
  • Step 707 The LMF network element queries the Unified Data Management (UDM) network element for the identifier of the AMF network element corresponding to the MBSR MT.
  • UDM Unified Data Management
  • the LMF network element calls the service-oriented operation Nudm_UECM_Get Request of the UDM network element.
  • the service-oriented operation carries the identifier of the MBSR MT.
  • the UDM network element determines the identifier of the AMF network element corresponding to the MBSR MT based on the identifier of the MBSR MT.
  • Step 708 The LMF network element sends a subscription request to the AMF network element (AMF network element corresponding to MBSR), and the subscription request is used to subscribe to the update event of the cell identifier corresponding to MBSR.
  • AMF network element AMF network element corresponding to MBSR
  • the subscription request may correspond to the first message of the embodiment shown in Figure 6.
  • the subscription request includes the identifier of the MBSR MT.
  • Step 709.AMF network element sends a subscription request to MBSR MT.
  • the AMF network element can send a downlink NAS message to the MBSR MT.
  • the downlink NAS message carries a subscription event, which is used to subscribe to the update of the cell identifier corresponding to the MBSR.
  • Step 710 MBSR MT forwards the subscription request to MBSR DU.
  • Step 711 MBSR moves from donor base station 1 to donor base station 2.
  • Step 712. MBSR DU completes the F1 establishment process with host base station 2, and host base station 2 assigns a new cell identifier to MBSR DU.
  • Step 713 MBSR DU sends a subscription notification to MBSR MT, and the subscription notification is used to notify the cell ID corresponding to the updated MBSR.
  • the subscription notification may correspond to the second message of the embodiment shown in Figure 6.
  • the subscription notification includes the cell identifier corresponding to the updated MBSR.
  • the subscription notification may also include the identifier of the MBSR MT.
  • Step 714 MBSR MT sends a subscription notification to the AMF network element.
  • Step 715 The AMF network element sends a subscription notification to the LMF network element.
  • Step 716 The LMF network element locally updates the correspondence between the MBSR MT identifier, cell identifier and mobility indication.
  • Step 717 The AMF network element triggers the positioning process for the UE.
  • Step 718 The UE reports positioning measurement data to the LMF network element.
  • the positioning measurement data includes the cell identifier corresponding to the new MBSR.
  • the process may refer to the prior art.
  • Step 719 The LMF network element obtains the location information of the MBSR cell according to the cell identifier corresponding to the new MBSR in the UE's positioning measurement data for UE positioning.
  • the LMF network element when the LMF network element learns that the cell corresponding to the MBSR has mobility, the LMF network element can initiate a subscription process to timely learn the latest cell identifier broadcast by the MBSR.
  • the LMF network element obtains the current location information of the MBSR based on the latest cell identifier broadcast by the MBSR, and determines the location information of the UE based on the positioning measurement data reported by the UE connected to the network through the MBSR and the current location information of the MBSR obtained, so that the positioning result is more accurate.
  • FIG8 is a schematic diagram of another method for updating a cell identifier in an embodiment of the present application.
  • the method can be applied to a communication system including a first device, a second device, and a third device.
  • FIG8 takes the first device as an AMF network element, the second device as a mobile integrated backhaul node (mobile IAB) or a mobile base station relay MBSR node (hereinafter described as MBSR), and the third device as an access network device as an example to illustrate the solution.
  • the method includes:
  • Step 801. The AMF network element sends a first message to the access network device, where the first message is used to subscribe to an update event of a cell identifier corresponding to the MBSR.
  • the AMF network element when the AMF network element learns that the MBSR has mobility capabilities, the AMF network element sends a first message to the access network device.
  • the MBSR indicates to the access network device serving the MBSR that it has mobility capabilities, and the AMF network element learns that the MBSR has mobility capabilities through the access network device.
  • the first message includes an identifier of the MBSR.
  • Step 802. The access network device sends a second message to the AMF network element, where the second message is used to notify the updated cell identifier corresponding to the second device.
  • the access network device when the access network device learns that the cell identifier corresponding to the MBSR has changed, the access network device sends a second message to the AMF network element.
  • the access network device receives the cell identifier broadcast by the MBSR and learns that the cell identifier corresponding to the MBSR has changed.
  • the second message includes the cell identifier corresponding to the MBSR.
  • the second message also includes the identifier of the MBSR.
  • the MBSR moves within the coverage of the same access network device, the MBSR broadcasts its new cell identifier, the access network device receives the cell identifier broadcast by the MBSR, and learns that the cell identifier corresponding to the MBSR has changed. The access network device sends a second message to the AMF network element to notify the cell identifier corresponding to the updated MBSR.
  • the MBSR moves from access network device 1 to access network device 2, and the MBSR broadcasts its new cell identifier, which may be the cell identifier assigned to the MBSR by access network device 2.
  • Access network device 2 sends a second message to the AMF network element to notify the cell identifier corresponding to the updated MBSR.
  • the MBSR moves from access network device 1 to access network device 2, and access network device 1 needs to send a first message to access network device 2 so that access network device 2 is informed that the AMF network element has subscribed to the update event of the cell identifier corresponding to the MBSR.
  • the access network device may be a host base station.
  • the method for updating the cell identifier shown in this embodiment is that when the AMF network element learns that the cell corresponding to the MBSR has mobility, the AMF network element can initiate a subscription process to promptly learn about the latest cell identifier broadcast by the MBSR. In this way, the LMF network element can obtain the latest cell identifier broadcast by the MBSR from the AMF network element, thereby learning about the current location information of the MBSR.
  • the LMF network element determines the location information of the UE based on the positioning measurement data reported by the UE connected to the network through the MBSR and the current location information of the MBSR obtained.
  • the cell identifier of the MBSR in the above positioning measurement data can be consistent with the cell identifier of the MBSR locally stored by the LMF network element, which can improve the positioning accuracy of the UE.
  • FIG9 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application. As shown in FIG9 , the method for updating a cell identifier according to the present embodiment includes:
  • the MBSR MT initiates a registration process through the donor base station and sends a registration request message to the network.
  • the MBSR MT indicates to the host base station 1 that the MBSR has mobility capabilities.
  • the host base station 1 selects an AMF network element (i.e., MBSR-AMF, the AMF serving the MBSR) and indicates to the AMF network element in the N2 message that the MBSR has mobility capabilities.
  • the MBSR is registered with the MBSR-AMF.
  • Step 902. MBSR-AMF sends a subscription request to the host base station 1, where the subscription request is used to subscribe to the update event of the cell identifier corresponding to the MBSR.
  • MBSR-AMF learns that MBSR has mobility capability, and MBSR-AMF sends a subscription request to host base station 1, and the subscription request may correspond to the first message of the embodiment shown in Figure 8.
  • the subscription request includes the identifier of the MBSR MT.
  • Step 903. MBSR DU completes the F1 establishment process with host base station 1.
  • the F1 establishment process can refer to the existing technology.
  • the cell supported by the MBSR DU is activated, and the cell identifier broadcast by the MBSR (for example, NR CGI1) can be reported by the MBSR DU to the host base station 1.
  • the cell identifier broadcast by the MBSR for example, NR CGI1
  • Step 904 The host base station 1 sends a subscription notification to the MBSR-AMF, where the subscription notification is used to notify the cell identifier corresponding to the MBSR.
  • the subscription notification may correspond to the second message of the embodiment shown in Figure 8.
  • the subscription notification includes the cell identifier corresponding to the MBSR (for example, NR CGI1).
  • the method before executing step 902, the method further includes:
  • Step 901A MBSR-AMF sends a request message to donor base station 1, where the request message is used to request the cell identity corresponding to MBSR.
  • MBSR-AMF when MBSR-AMF learns that MBSR has mobility capability, MBSR-AMF sends a location reporting control (Location Reporting Control) message to host base station 1, where the message includes a reporting type Reporting Type, and Reporting Type is used to instruct host base station 1 to report the cell identifier corresponding to MBSR to MBSR-AMF.
  • Location Reporting Control Location Reporting Control
  • Step 901B MBSR DU completes the F1 establishment process with host base station 1.
  • the F1 establishment process can refer to the existing technology.
  • the cell supported by the MBSR DU is activated, and the cell identifier broadcast by the MBSR (for example, NR CGI1) can be reported by the MBSR DU to the host base station 1.
  • the cell identifier broadcast by the MBSR for example, NR CGI1
  • Step 901C The host base station 1 returns a response message to the MBSR-AMF, and the response message includes the cell identifier corresponding to the MBSR.
  • the host base station 1 returns a Location Report message to the MBSR-AMF, and the message includes the cell identifier corresponding to the MBSR.
  • Step 905. MBSR-AMF locally stores the correspondence between the MBSR MT identifier and the cell identifier corresponding to the MBSR.
  • Step 906 The MBSR moves within the coverage of host base station 1, and the cell ID broadcast by the MBSR DU changes. At this time, the MBSR DU sends the cell ID corresponding to the new MBSR to host base station 1.
  • Step 907 Donor base station 1 sends a subscription notification to MBSR-AMF.
  • the subscription notification includes the cell identifier corresponding to the MBSR (e.g., NR CGI2).
  • Step 908 MBSR-AMF locally updates the correspondence between the MBSR MT identifier and the cell identifier corresponding to the MBSR.
  • Step 909 The MBSR moves from host base station 1 to host base station 2, and the cell identifier broadcast by the MBSR DU changes.
  • Step 910 The host base station 1 sends subscription information to the host base station 2, where the subscription information is used to inform the host base station 2 that the MBSR-AMF has subscribed to the update event of the cell identifier corresponding to the MBSR.
  • Step 911 The donor base station 2 sends a subscription notification to the MBSR-AMF.
  • the subscription notification includes the cell identifier corresponding to the MBSR (e.g., NR CGI3).
  • Step 912. MBSR-AMF locally updates the correspondence between the MBSR MT identifier and the cell identifier corresponding to the MBSR.
  • the cell identifier updating method shown in this embodiment is that when the AMF network element learns that the cell corresponding to the MBSR has mobility, the AMF network element can initiate a subscription process to timely learn the latest cell identifier broadcast by the MBSR. In this way, when other network elements, such as the LMF network element, learn that the cell corresponding to the MBSR has mobility, they can obtain the latest cell identifier broadcast by the MBSR from the AMF network element.
  • the LMF network element obtains the current location information of the MBSR based on the latest cell identifier broadcast by the MBSR, and determines the location information of the UE according to the positioning measurement data reported by the UE connected to the network through the MBSR and the obtained current location information of the MBSR, so that the positioning result is more accurate.
  • FIG10 is a schematic diagram of another method for updating a cell identifier in an embodiment of the present application.
  • the second device is a mobility integrated backhaul node (mobile IAB) or a mobile base station relay MBSR node (hereinafter described as MBSR)
  • the core network device includes an AMF network element, an NRF network element and an LMF network element.
  • the method includes:
  • Step 1001. MBSR sends a third message to access network device 1, and the third message includes the MBSR identifier (for example, the GPSI of MBSR MT).
  • the MBSR identifier for example, the GPSI of MBSR MT.
  • the third message may also include the TAC supported by the cell of MBSR.
  • the third message may also include the NR CGI supported by the cell of MBSR.
  • the third message includes an F1 establishment request message.
  • Access network device 1 sends a fourth message to the AMF network element, and the fourth message includes the MBSR identifier and the cell identifier corresponding to the MBSR (for example, GPSI and NR CGI1).
  • the cell identifier corresponding to the MBSR in the fourth message may be the cell identifier assigned by the access network device to the MBSR.
  • the AMF network element locally stores the identifier of the MBSR and the cell identifier corresponding to the MBSR.
  • the fourth message includes an NG configuration update message.
  • the AMF network element sends the seventh message to the NRF network element.
  • the seventh message includes the MBSR identifier and the cell identifier corresponding to the MBSR (for example, GPSI and NR CGI1).
  • the seventh message includes a network element update message (eg, Nnrf_NFManagement_NFUpdate).
  • a network element update message eg, Nnrf_NFManagement_NFUpdate.
  • Step 1004 The NRF network element stores the MBSR identifier and the cell identifier corresponding to the MBSR.
  • the access network device 1 can send the MBSR information (including the MBSR identifier and the cell identifier corresponding to the MBSR) to the NRF network element for storage.
  • the MBSR may execute step 1005 .
  • Step 1005. MBSR sends a fifth message to access network device 1, where the fifth message is used to indicate the release of F1 link.
  • the fifth message includes the identifier of MBSR (e.g., GPSI of MBSR MT).
  • Step 1006 Access network device 1 sends a sixth message to the AMF network element, where the sixth message is used to instruct the AMF network element to delete the MBSR identifier and the cell identifier corresponding to the MBSR.
  • the sixth message includes an NG configuration update message.
  • the sixth message includes an MBSR identifier and a cell identifier corresponding to the MBSR (e.g., GPSI and NR CGI1).
  • Step 1007 The AMF network element sends an eighth message to the NRF network element, where the eighth message is used to instruct the NRF network element to delete the MBSR identifier and the cell identifier corresponding to the MBSR.
  • the eighth message includes a network element update message.
  • the eighth message includes an MBSR identifier and a cell identifier corresponding to the MBSR (e.g., GPSI and NR CGI1).
  • Step 1008 The NRF network element deletes the MBSR identifier and the cell identifier corresponding to the MBSR.
  • access network device 2 can send the latest information of the MBSR to the NRF network element for update storage based on the same F1 establishment process, thereby ensuring that the NRF network element stores the cell identifier corresponding to the latest MBSR.
  • the UE when the AMF network element triggers the positioning process for the UE, the UE reports positioning measurement data to the network (eg, the LMF network element), where the positioning measurement data includes a cell identifier corresponding to the MBSR serving the UE.
  • the LMF network element may execute step 1009.
  • Step 1009 The LMF network element sends a query request to the NRF network element, the query request being used to query the identifier of the MBSR associated with the cell identifier corresponding to the MBSR.
  • the query request includes the cell identifier corresponding to the MBSR.
  • Step 1010 The NRF network element sends a query response to the LMF network element, where the query response includes the identifier of the MBSR associated with the cell identifier corresponding to the MBSR.
  • MBSR moves to access network device 2.
  • access network device 2 assigns the latest cell identifier to the MBSR and stores the latest cell identifier to the NRF network element, thereby ensuring that the core network, such as the LMF network element, obtains the latest cell identifier of the MBSR, which can be consistent with the cell identifier corresponding to the MBSR in the positioning measurement data reported by the UE.
  • the LMF network element obtains the identifier of the MBSR associated with the cell identifier from the NRF network element based on the latest cell identifier of the MBSR, and then obtains the location information of the MBSR, and then determines the location information of the UE based on the location information of the MBSR and the positioning measurement data reported by the UE, so that the positioning result is more accurate.
  • FIG. 10 is a schematic diagram of another method for updating a cell identifier according to an embodiment of the present application. As shown in FIG11 , the method for updating a cell identifier according to the present embodiment includes:
  • Step 1101. MBSR DU sends F1 establishment request to host base station 1.
  • the F1 setup request includes an identification of the MBSR MT (e.g., GPSI).
  • the F1 setup request may also include a TAC supported by the cell of the MBSR DU.
  • the F1 setup request may also include an NR CGI supported by the cell of the MBSR DU.
  • Donor base station 1 assigns a cell identifier (e.g., NR CGI1) to the MBSR DU. (Optional)
  • a cell identifier e.g., NR CGI1
  • the host base station 1 can allocate an NR CGI for the MBSR DU.
  • step 1102 perform the following steps:
  • Step 1102A The host base station 1 sends an NG configuration update message to AMF1.
  • the NR configuration update message is used to trigger the network side to store MBSR information (MBSR profile).
  • the MBSR information includes the correspondence between the cell identifier corresponding to the MBSR and the identifier of the MBSR MT (for example, the MBSR information includes NR CGI1 and GPSI).
  • the MBSR profile may also be referred to as the mobile IAB profile.
  • the MBSR information may further include other information related to the MBSR cell, such as TAC, which is not limited in this embodiment.
  • Step 1102B The AMF1 network element sends a network element update message to the NRF network element, where the network element update message includes MBSR information.
  • the AMF1 network element can also send MBSR information to other network elements, such as UDM or Unified Data Management (UDR) network elements.
  • UDM Unified Data Management
  • Step 1102C The NRF network element locally stores the correspondence between the cell identifier corresponding to the MBSR and the identifier of the MBSR MT.
  • Step 1103. Host base station 1 sends an F1 establishment response to the MBSR DU.
  • the F1 establishment response includes the cell identifier corresponding to the MBSR (e.g., NR CGI1).
  • Step 1104. MBSR moves from donor base station 1 to donor base station 2.
  • Step 1105. The F1 link is released between the MBSR DU and the host base station 1. Specifically, the MBSR DU sends an F1 release request message to the host base station 1.
  • Step 1106A The host base station 1 sends an NG configuration update message to the AMF1 network element.
  • the configuration update message is used to trigger the network side (eg, the AMF1 network element) to delete the MBSR information.
  • the MBSR information includes the correspondence between the cell identifier corresponding to the MBSR and the identifier of the MBSR MT (for example, the MBSR information includes NR CGI1 and GPSI).
  • Step 1106B The AMF1 network element sends a network element update message to the NRF network element.
  • the network element update message is used to trigger the NRF network element to delete the MBSR information.
  • Step 1106C The NRF network element deletes the locally stored MBSR information (for example, deletes the NR CGI1 and GPSI of the MBSR).
  • Step 1107. MBSR DU sends F1 establishment request to host base station 2.
  • the F1 setup request includes an identifier of the MBSR MT.
  • the F1 setup request may also include a TAC supported by the cell of the MBSR DU.
  • the F1 setup request may also include an NR CGI supported by the cell of the MBSR DU.
  • Donor base station 2 assigns a cell identifier (e.g., NR CGI2) to the MBSR DU. (Optional)
  • a cell identifier e.g., NR CGI2
  • the host base station 2 can allocate an NR CGI for the MBSR DU.
  • Steps 1108A to 1108C are similar to steps 1102A to 1102C, and can realize, for example, that the AMF2 network element triggers the NRF network element to locally store MBSR information, where the MBSR information includes the correspondence between the cell identifier corresponding to the MBSR and the identifier of the MBSR MT (for example, the MBSR information includes NR CGI2 and GPSI).
  • the AMF1 network element and the AMF2 network element can be the same AMF network element or different AMF network elements, which is not limited in this embodiment.
  • Step 1109 Host base station 2 sends an F1 establishment response to the MBSR DU.
  • the F1 establishment response includes the cell identifier corresponding to the MBSR (e.g., NR CGI2).
  • Step 1110 AMF2 network element triggers the positioning process for the UE.
  • the UE accesses the network through the MBSR cell.
  • the AMF2 network element triggers the positioning flow of the UR. Procedure.
  • Step 1111 The UE reports the positioning measurement data to the LMF network element.
  • the positioning measurement data includes the cell identifier corresponding to the MBSR (for example, NR CGI2). This process may refer to the prior art.
  • Step 1112. The LMF network element sends a query request to the NRF network element, where the query request is used to query the identifier of the MBSR associated with the cell identifier corresponding to the MBSR.
  • the query request includes a cell identifier corresponding to the MBSR (e.g., NR CGI2).
  • a cell identifier corresponding to the MBSR e.g., NR CGI2.
  • Step 1113 The NRF network element sends a query response to the LMF network element, and the query response includes the identifier of the MBSR MT associated with the cell identifier corresponding to the MBSR (for example, the GPSI associated with NG CGI2).
  • Step 1114 The LMF network element obtains the location information of the MBSR MT, and determines the location information of the UE based on the location information of the MBSR MT and the positioning measurement data.
  • the cell identification update method shown in this embodiment is that in the F1 establishment process, the MBSR sends the MBSR MT identification to the host base station, so that the host base station can send the MBSR information including the MBSR MT identification and the cell identification corresponding to the MBSR to the NRF network element of the core network for storage, thereby ensuring that the core network obtains the latest cell identification of the MBSR.
  • the host base station can send the MBSR information including the MBSR MT identification and the cell identification corresponding to the MBSR to the NRF network element of the core network for storage, thereby ensuring that the core network obtains the latest cell identification of the MBSR.
  • other network elements such as the LMF network element, learn that the cell corresponding to the MBSR has mobility, they can obtain the latest cell identification broadcast by the MBSR from the NRF network element.
  • the LMF network element obtains the current location information of the MBSR based on the latest cell identifier broadcast by the MBSR, and determines the location information of the UE according to the positioning measurement data reported by the UE connected to the network through the MBSR and the obtained current location information of the MBSR, so that the positioning result is more accurate.
  • other network elements such as an SMF network element or an AMF network element, can also request, through an NRF network element, to obtain the identifier of the MBSR associated with the cell identifier corresponding to the MBSR.
  • the above text describes the cell identity updating method according to the embodiment of the present application in combination with FIG. 6 to FIG. 11 .
  • the following text describes the communication device for a wireless backhaul network according to the embodiment of the present application in combination with FIG. 12 and FIG. 13 .
  • Figure 12 is a schematic diagram of the structure of a communication device for a wireless backhaul network provided in an embodiment of the present application.
  • the device 1200 can be an LMF network element; or, the device 1200 can also be a second device (i.e., a mobile access backhaul integrated node or a mobile base station relay node); or, the device 1200 can also be an AMF network element; or, the device 1200 can also be an access network device (such as a host base station); or, the device 1200 can also be an NRF network element.
  • the device 1200 includes: a sending unit 1201 and a receiving unit 1202.
  • a sending unit 1201 is used to send a first message when learning that the second device has mobility capability, the first message being used to subscribe to an update event of a cell identifier corresponding to the second device;
  • a receiving unit 1202 is used to receive a second message when the cell identifier corresponding to the second device changes, the second message being used to notify the updated cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the sending unit 1201 is configured to send a first message to the third device, where the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; and the receiving unit 1202 is configured to receive the second message through the third device.
  • the third device is an access and mobility management function AMF network element.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the receiving unit 1202 is used to receive a first message, where the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; and the sending unit 1201 is used to send a second message when the cell identifier corresponding to the second device changes, where the second message is used to notify the updated cell identifier corresponding to the second device.
  • the receiving unit 1202 is configured to receive the first message from the first device through the third device; the sending unit 1201 is configured to send the second message to the first device through the third device.
  • the first device is a location management function LMF network element, and the third device is an access and mobility management function AMF network element.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the sending unit 1201 is configured to, upon learning that the second When the device has mobility capability, a first message is sent, the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; a receiving unit 1202 is used to receive a second message when the cell identifier corresponding to the second device changes, the second message is used to notify the updated cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the sending unit 1201 is configured to send a first message to the third device, where the first message is used to subscribe to an update event of a cell identifier corresponding to the second device; and the receiving unit 1202 is configured to receive the second message through the third device.
  • the third device is an access network device.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • a receiving unit 1202 is configured to receive a first message, the first message being used to subscribe to an update event of a cell identifier corresponding to the second device; and a sending unit 1201 is configured to send a second message when learning that the cell identifier corresponding to the second device has changed, the second message being used to notify the updated cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the receiving unit 1202 is configured to receive the first message from the first device, and the sending unit 1201 is configured to send the second message to the first device.
  • the first device is an access and mobility management function AMF network element.
  • the first message includes an identifier of the second device.
  • the second message includes an updated cell identifier corresponding to the second device.
  • the receiving unit 1202 is configured to receive a third message from the second device, the third message including an identifier of the second device; and the sending unit 1201 is configured to send a fourth message to an AMF network element, the fourth message including an identifier of the second device and a cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the third message includes an F1 step request message.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the fourth message or the sixth message sent by the sending unit 1201 to the AMF network element includes an NG configuration update message.
  • the receiving unit 1202 is used to receive a fourth message from the access network device, the fourth message including the identifier of the second device and the cell identifier corresponding to the second device; the sending unit 1201 is used to send a seventh message to the NRF network element, the seventh message including the identifier of the second device and the cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the cell identifier corresponding to the second device in the fourth message is a cell identifier allocated by the access network device to the second device.
  • the receiving unit 1202 is also used to receive a sixth message from the access network device, and the sixth message is used to instruct the AMF network element to delete the identifier of the second device and the cell identifier corresponding to the second device;
  • the sending unit 1201 is also used to send an eighth message to the NRF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the fourth message or the sixth message received by the receiving unit 1202 from the access network device includes an NG configuration update message.
  • the seventh message or the eighth message sent by the sending unit 1201 to the NRF network element includes a network element update message.
  • the sending unit 1201 is configured to send a third message to the access network device, wherein the third message includes the The identification of the second device.
  • the third message includes an F1 step request message.
  • the sending unit 1201 is further configured to send a fifth message to the access network device, where the fifth message is used to instruct to release the F1 link.
  • the receiving unit 1202 is configured to receive a seventh message from the AMF network element, the seventh message including an identifier of the second device and a cell identifier corresponding to the second device; and the storage unit is configured to store the identifier of the second device and the cell identifier corresponding to the second device.
  • the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the receiving unit 1202 is also used to receive an eighth message from the AMF network element, and the eighth message is used to instruct the NRF network element to delete the identifier of the second device and the cell identifier corresponding to the second device; the storage unit is also used to delete the identifier of the second device and the cell identifier corresponding to the second device.
  • the seventh message or the eighth message received by the receiving unit 1202 from the AMF network element includes a network element update message.
  • the receiving unit 1202 is also used to receive a query request from the LMF network element, and the query request is used to query the identifier of the second device associated with the cell identifier corresponding to the second device; the device also includes: a sending unit 1201, used to send a query response to the LMF network element, and the query response includes the identifier of the second device associated with the cell identifier corresponding to the second device.
  • the receiving unit 1202 is used to receive positioning measurement data from a terminal device, the terminal device accesses the network through the second device, and the positioning measurement data includes a cell identifier corresponding to the second device; the second device is a mobile access backhaul integrated node or a mobile base station relay node.
  • the sending unit 1201 is used to send a query request to the NRF network element, the query request is used to query the identifier of the second device associated with the cell identifier corresponding to the second device; the receiving unit 1202 is also used to receive a query response from the NRF network element, the query response includes the identifier of the second device associated with the cell identifier corresponding to the second device.
  • the device 1200 herein is embodied in the form of a functional unit.
  • the term "unit” herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit, and/or other suitable components that support the described functions.
  • ASIC application specific integrated circuit
  • processor e.g., a shared processor, a dedicated processor, or a group processor, etc.
  • memory for executing one or more software or firmware programs, a combined logic circuit, and/or other suitable components that support the described functions.
  • the device 1200 may be the LMF network element in the above-mentioned embodiment, and the device 1200 may be used to execute the various processes and/or steps corresponding to the LMF network element in the above-mentioned method embodiment; or, the device 1200 may be the MBSR node in the above-mentioned embodiment, and the device 1200 may be used to execute the various processes and/or steps corresponding to the MBSR node in the above-mentioned method embodiment; or, the device 1200 may be the AMF network element in the above-mentioned embodiment, and the device 1200 may be used to execute the various processes and/or steps corresponding to the AMF network element in the above-mentioned method embodiment; or, the device 1200 may be the host base station in the above-mentioned embodiment, and the device 1200 may be used to execute the various processes and/or steps corresponding to the host base station in the above-mentioned method embodiment; or, the device 1200 may be
  • the apparatus 1200 of each of the above schemes has the function of implementing the corresponding steps in the above method; the function can be implemented by hardware, or by hardware executing the corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions; for example, the sending unit can be replaced by a transmitter, the receiving unit can be replaced by a receiver, and other units, such as the processing unit, can be replaced by a processor, respectively performing the sending and receiving operations and related processing operations in each method embodiment.
  • the device in FIG. 12 may also be a chip or a chip system, for example, a system on chip (SoC).
  • the transceiver unit (including the receiving unit and the transmitting unit) may be the transceiver circuit of the chip, which is not limited here.
  • FIG13 is a schematic diagram of the structure of another communication device for a wireless backhaul network provided in an embodiment of the present application.
  • the device 1300 may be the LMF network element in the above embodiment, and may be used to execute the various processes and/or steps corresponding to the LMF network element in the above method embodiment; or, the device 1300 may be the MBSR node in the above embodiment, and may be used to execute the various processes and/or steps corresponding to the MBSR node in the above method embodiment; or, the device 1300 may be the above embodiment.
  • the AMF network element in the above embodiment can be used to execute the various processes and/or steps corresponding to the AMF network element in the above method embodiment; alternatively, the device 1300 can be the host base station in the above embodiment, and can be used to execute the various processes and/or steps corresponding to the host base station in the above method embodiment; alternatively, the device 1300 can be the NRF network element in the above embodiment, and can be used to execute the various processes and/or steps corresponding to the NRF network element in the above method embodiment.
  • the device 1300 includes a transceiver 1310, a memory 1320, and a processor 1330; the transceiver 1310, the memory 1320, and the processor 1330 communicate with each other through an internal connection path.
  • the transceiver 1310 is used to receive or send signals or data
  • the memory 1320 is used to store program instructions or data
  • the processor 1330 is used to call the program instructions in the memory 1320 to implement the methods in various possible implementations of the device 1300.
  • the memory 1320 may include a read-only memory and a random access memory, and provide instructions and data to the processor.
  • a portion of the memory may also include a non-volatile random access memory.
  • the memory may also store information about the device type.
  • the processor 1310 of the above-mentioned device 1300 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the present application also provides a computer-readable medium, wherein the computer-readable medium stores a program code for computer execution, wherein the program code includes instructions for executing a method for each network element or device in any of the above method embodiments.
  • the present application also provides a computer program product, which includes a computer program code.
  • the computer program code runs on a computer, the computer implements the method of each network element or device in any of the above method embodiments.
  • the present application provides a chip comprising: an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected via an internal connection path, and the processor is used to execute the code in the memory.
  • the processor is used to execute the method of each network element or device in any of the above-mentioned method embodiments.
  • each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.
  • the steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software units in a processor for execution.
  • the software unit can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

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Abstract

本申请提供一种小区标识的更新方法与装置。在该方法中，第一设备可以在获知第二设备具有移动能力时，发送订阅消息，该订阅消息用于订阅第二设备对应的小区标识的更新事件，以便在第二设备对应的小区标识发生改变时，第一设备能够及时获知最新的第二设备对应的小区标识。其中，第二设备为移动接入回传一体化节点或移动基站中继节点，第一设备为核心网设备，例如定位管理功能LMF网元或接入和移动性管理功能AMF网元。网络若能够及时获知第二设备对应的小区标识，有利于网络对通过第二设备接入网络的终端设备的位置定位，提高终端设备的定位精度。

Description

小区标识的更新方法与装置
本申请要求于2022年09月29日提交中国专利局、申请号为202211203419.8、申请名称为“小区标识的更新方法与装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种小区标识的更新方法与装置。
背景技术
随着通信技术的发展，中继设备得以广泛应用。在第五代(the fifth generation，5G)移动通信系统新无线(new radio，NR)研究中，提出了集成无线接入链路和无线回传链路的接入回传一体化(integrated access and backhaul，IAB)的节点。IAB节点通过无线接口以类似终端的方式接入一个服务于它的基站，该基站称为宿主基站(donor base station)，IAB节点和宿主基站之间的无线接口链路称为回传链路(backhaul link)。IAB节点对接入其小区的终端提供与普通基站类似的功能和服务，IAB节点与终端之间的通信链路称之为接入链路(access link)。
通常，IAB节点可以部署在室外、室内等不易部署有线传输网络的场景下，一般固定在地面上或者楼宇中，不具备移动性。现有的定位方案中，终端设备接入固定位置的IAB节点，网络可以根据终端设备向网络发送的上行定位消息(UL positioning message)，以及该IAB节点的小区信息来确定终端设备的位置。其中，上行定位消息包含终端设备基于哪个小区所做的测量结果以及小区标识。
然而，随着移动中继的普遍应用，例如，移动中继搭载在车辆上的车载中继(vehicle mounted relay，VMR)，使得位于车辆内部或周围的终端设备可以通过移动中继实现入网，VMR节点可以理解为具有移动能力的IAB节点。基于现有定位方案，虽然终端设备可以使用VMR节点的小区信号进行定位测量，但是VMR节点的小区位置在不断发生变化，小区标识也在不断发生变化，网络不能及时获知更新后的小区标识。
发明内容
本申请提供了一种小区标识的更新方法与装置，使得网络能够及时获知小区广播的最新的小区标识。
第一方面，本申请提供一种小区标识的更新方法，应用于包括第一设备和第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述第一设备获知所述第二设备具有移动能力时，所述第一设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述第二设备对应的小区标识发生改变时，所述第一设备接收第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
本申请实施例中，第一设备在获知第二设备对应的小区具有移动性时，可以发起订阅流程，以便及时获知第二设备广播的最新的小区标识，这样，第一设备基于第二设备广播的最新的小区标识获取第二设备当前的位置信息，该位置信息可用于对连接第二设备的终端设备进行位置定位，提升终端设备的定位精度。
上述的第一消息也可称为订阅请求或订阅消息，上述的第二消息也可称为订阅响应或订阅通知。
结合第一方面，在一种可能的实现方式中，所述通信系统还包括第三设备，所述第一设备发送第一消息，包括：所述第一设备向所述第三设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述第一设备接收第二消息，包括：所述第一设备通过所述第三设备接收所述第二消息。
该实现方式中，第一设备发起订阅流程，具体是向第三设备发送订阅请求，当第二设备广播的小区标识发生改变时，从第三设备接收订阅通知，及时获知第二设备广播的最新的小区标识。
结合第一方面，在一种可能的实现方式中，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
该实现方式中，LMF网元发起订阅流程，具体是向AMF网元发送订阅请求，当第二设备广播的小区标识发生改变时，从AMF网元接收订阅通知，及时获知第二设备广播的最新的小区标识。
结合第一方面，在一种可能的实现方式中，所述第一设备为AMF网元，所述第三设备为接入网设备。
该实现方式中，AMF网元发起订阅流程，具体是向接入网设备发送订阅请求，当第二设备广播的小区标识发生改变时，从接入网设备接收订阅通知，及时获知第二设备广播的最新的小区标识。
上述的接入网设备可以是宿主基站。
结合第一方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第一方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第二方面，本申请提供一种小区标识的更新方法，应用于包括第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述第二设备接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述第二设备对应的小区标识发生改变时，所述第二设备发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
本申请实施例中，第二设备接收第一消息，获知有设备发起对第二设备对应的小区标识更新的订阅事件，第二设备在移动过程中，若第二设备广播的小区标识发生改变，第二设备可向发送第一消息的设备返回第二消息，用于通知其广播的小区标识改变，从而确保发起该订阅事件的设备及时获知第二设备广播的最新的小区标识。
上述的第一消息也可称为订阅请求或订阅消息，上述的第二消息也可称为订阅响应或订阅通知。
结合第二方面，在一种可能的实现方式中，所述通信系统还包括第一设备和第三设备，所述第二设备接收第一消息，包括：所述第二设备通过所述第三设备接收来自所述第一设备的所述第一消息；所述第二设备发送所述第二消息，包括：所述第二设备通过所述第三设备向所述第一设备发送所述第二消息。
该实现方式中，第一设备是发起对第二设备对应的小区标识更新的订阅事件的设备，第一设备通过第三设备向第二设备发送订阅请求，当第二设备广播的小区标识发生改变时，第二设备可通过第三设备向第一设备发送订阅通知，从而确保发起订阅事件的第一设备及时获知第二设备广播的最新的小区标识。
结合第二方面，在一种可能的实现方式中，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
该实现方式中，LMF网元是发起对第二设备对应的小区标识更新的订阅事件的设备，LMF网元通过AMF网元向第二设备发送订阅请求，当第二设备广播的小区标识发生改变时，第二设备可通过AMF网元向LMF网元发送订阅通知，从而确保LMF网元及时获知第二设备广播的最新的小区标识。
结合第二方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第二方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第三方面，本申请提供一种小区标识的更新方法，应用于包括第二设备和第三设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述第三设备接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述第三设备获知所述第二设备对应的小区标识发生改变时，所述第三设备发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
本申请实施例中，第三设备接收第一消息，获知有设备发起对第二设备对应的小区标识更新的订阅事件，当第三设备获知第二设备对应的小区标识发生改变时，可向发送第一消息的设备返回第二消息，用于通知第二设备广播的小区标识改变，从而确保发起该订阅事件的设备及时获知 第二设备广播的最新的小区标识。
上述的第一消息也可称为订阅请求或订阅消息，上述的第二消息也可称为订阅响应或订阅通知。
结合第三方面，在一种可能的实现方式中，所述通信系统还包括第一设备，所述第三设备接收第一消息，包括：所述第三设备接收来自所述第一设备的所述第一消息；所述第三设备发送第二消息，包括：所述第三设备向所述第一设备发送所述第二消息。
该实现方式中，第三设备接收来自第一设备的订阅请求，可获知第一设备是发起对第二设备对应的小区标识更新的订阅事件的设备。当第三设备获知第二设备对应的小区标识发生改变时，可向第一设备发送订阅通知，确保第一设备及时获知第二设备广播的最新的小区标识。
结合第三方面，在一种可能的实现方式中，所述第一设备为接入和移动性管理功能AMF网元，所述第三设备为接入网设备。
该实现方式中，接入网设备接收来自AMF网元的订阅请求，可获知AMF网元是发起对第二设备对应的小区标识更新的订阅事件的设备。当接入网设备获知第二设备对应的小区标识发生改变时，可向AMF网元发送订阅通知，确保AMF网元及时获知第二设备广播的最新的小区标识。
结合第三方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第三方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第四方面，本申请提供一种小区标识的更新方法，应用于包括接入网设备、第二设备、接入和移动性管理功能AMF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述接入网设备接收来自所述第二设备的第三消息，所述第三消息包括所述第二设备的标识；所述接入网设备向AMF网元发送第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识。
本申请实施例中，第二设备通过接入网设备连接网络。接入网设备在接收到第二设备的标识后，可以将第二设备的标识以及第二设备对应的小区标识发送给AMF网元，以便AMF网元存储第二设备的标识以及第二设备对应的小区标识，这样，其他网元，例如LMF网元，可从AMF网元获知第二设备对应的小区标识。
结合第四方面，在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
结合第四方面，在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
结合第四方面，在一种可能的实现方式中，所述方法还包括：所述接入网设备接收来自所述第二设备的第五消息，所述第五消息用于指示释放F1链接；所述接入网设备向所述AMF网元发送第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
该实现方式中，接入网设备接收到释放F1的指示，将释放与第二设备的通信链路，对此，接入网设备可通知AMF网元，以便AMF网元删除已失效的第二设备的标识以及第二设备对应的小区标识。
结合第四方面，在一种可能的实现方式中，所述接入网设备向所述AMF网元发送的第四消息或者第六消息包括NG配置更新(NG configuration update)消息。
第五方面，本申请提供一种小区标识的更新方法，应用于包括接入网设备、第二设备、接入和移动性管理功能AMF网元和网络存储功能NRF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述AMF网元接收来自所述接入网设备的第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识；所述AMF网元向NRF网元发送第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识。
本申请实施例中，AMF网元在接收到第二设备的标识和第二设备对应的小区标识后，可以将第二设备的标识以及第二设备对应的小区标识发送给NRF网元，以便NRF网元存储第二设备的 标识以及第二设备对应的小区标识，这样，其他网元，例如LMF网元，可从NRF网元获知第二设备对应的小区标识。
结合第五方面，在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
结合第五方面，在一种可能的实现方式中，所述方法还包括：所述AMF网元接收来自所述接入网设备的第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述AMF网元向所述NRF网元发送第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
该实现方式中，AMF网元在接收到删除第二设备的标识以及第二设备对应的小区标识的指示后，将该指示同步给NRF网元，以便NRF网元删除已失效的第二设备的标识以及第二设备对应的小区标识。
结合第五方面，在一种可能的实现方式中，所述AMF网元接收来自所述接入网设备的第四消息或者第六消息包括NG配置更新消息。
结合第五方面，在一种可能的实现方式中，所述AMF网元向所述NRF网元发送的第七消息或者第八消息包括网元更新消息。
第六方面，本申请提供一种小区标识的更新方法，应用于包括接入网设备和第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述第二设备向所述接入网设备发送第三消息，所述第三消息包括所述第二设备的标识。
可选地，第三消息还可以包括第二设备的小区支持的TAC。
可选地，第三消息还可以包括第二设备的小区支持的小区标识。
本申请实施例中，第二设备发送第三消息，以告知接入网设备第二设备的标识，以便接入网设备在获得第二设备对应的小区标识(可以是接入网设备为第二设备分配的小区标识，或者，第二设备广播的小区标识)后，将第二设备对应的小区标识以及第二设备的标识发送给网络，使网络及时获知第二设备对应的小区标识以及第二设备的标识。
结合第六方面，在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
结合第六方面，在一种可能的实现方式中，所述方法还包括：所述第二设备向所述接入网设备发送第五消息，所述第五消息用于指示释放F1链接。
该实现方式中，第二设备发送第五消息，以使接入网设备释放与第二设备的通信链路，接入网设备可删除第二设备的标识以及第二设备对应的小区标识，接入网设备也可通知网络侧删除已失效的第二设备的标识以及第二设备对应的小区标识。
第七方面，本申请提供一种小区标识的更新方法，应用于包括第二设备、接入和移动性管理功能AMF网元和网络存储功能NRF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述NRF网元接收来自所述AMF网元的第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识；所述NRF网元存储所述第二设备的标识以及所述第二设备对应的小区标识。
本申请实施例中，NRF网元通过AMF网元获知第二设备的标识以及第二设备对应的小区标识，NRF网元存储第二设备的标识以及第二设备对应的小区标识，这样，其他网元，例如LMF网元，可从NRF网元获知第二设备对应的小区标识。
结合第七方面，在一种可能的实现方式中，所述方法还包括：所述NRF网元接收来自所述AMF网元的第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
该实现方式中，NRF网元基于AMF网元发送的删除指示，及时删除已失效的第二设备的标识以及第二设备对应的小区标识。
结合第七方面，在一种可能的实现方式中，所述NRF网元接收来自所述AMF网元的第七消息或者第八消息包括网元更新消息。
结合第七方面，在一种可能的实现方式中，所述通信系统还包括定位管理功能LMF网元，所述方法还包括：所述NRF网元接收来自所述LMF网元的查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述NRF网元向所述LMF网元发送查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
第八方面，本申请提供一种小区标识的更新方法，应用于包括第二设备、网络存储功能NRF网元和定位管理功能LMF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：所述LMF网元接收来自终端设备的定位测量数据，所述终端设备是通过所述第二设备接入网络，所述定位测量数据包括所述第二设备对应的小区标识；所述LMF网元向所述NRF网元发送查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述LMF网元接收来自所述NRF网元的查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
第九方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括第一设备和第二设备，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：发送单元，用于在获知所述第二设备具有移动能力时，发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；接收单元，用于在所述第二设备对应的小区标识发生改变时，接收第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第一设备包括所述通信装置。
结合第九方面，在一种可能的实现方式中，所述无线回传网络还包括第三设备，所述发送单元，用于向所述第三设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述接收单元，用于通过所述第三设备接收所述第二消息。
结合第九方面，在一种可能的实现方式中，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
结合第九方面，在一种可能的实现方式中，所述第一设备为AMF网元，所述第三设备为接入网设备。
结合第九方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第九方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第十方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括第二设备，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；发送单元，用于在所述第二设备对应的小区标识发生改变时，发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第二设备包括所述通信装置。
结合第十方面，在一种可能的实现方式中，所述无线回传网络还包括第一设备和第三设备，所述接收单元，用于通过所述第三设备接收来自所述第一设备的所述第一消息；所述发送单元，用于通过所述第三设备向所述第一设备发送所述第二消息。
结合第十方面，在一种可能的实现方式中，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
结合第十方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第十方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第十一方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括第二设备和第三设备，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；发送单元，用于在获知所述第二设备对应的小区标识发生改变时，发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第三设备包括所述通信装置。
结合第十一方面，在一种可能的实现方式中，所述无线回传网络还包括第一设备，所述接收单元，用于接收来自所述第一设备的所述第一消息；所述发送单元，用于向所述第一设备发送所 述第二消息。
结合第十一方面，在一种可能的实现方式中，所述第一设备为接入和移动性管理功能AMF网元，所述第三设备为接入网设备。
结合第十一方面，在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
结合第十一方面，在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
第十二方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括接入网设备、第二设备、接入和移动性管理功能AMF网元，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收来自所述第二设备的第三消息，所述第三消息包括所述第二设备的标识；发送单元，用于向AMF网元发送第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识。所述接入网设备包括所述通信装置。
结合第十二方面，在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
结合第十二方面，在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
结合第十二方面，在一种可能的实现方式中，所述接收单元，还用于接收来自所述第二设备的第五消息，所述第五消息用于指示释放F1链接；所述发送单元，还用于向所述AMF网元发送第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
结合第十二方面，在一种可能的实现方式中，所述发送单元向所述AMF网元发送的第四消息或者第六消息包括NG配置更新(NG configuration update)消息。
第十三方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括接入网设备、第二设备、接入和移动性管理功能AMF网元和网络存储功能NRF网元，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收来自所述接入网设备的第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识；发送单元用于向NRF网元发送第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识。所述AMF网元包括所述通信装置。
结合第十三方面，在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
结合第十三方面，在一种可能的实现方式中，所述接收单元，还用于接收来自所述接入网设备的第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述发送单元，还用于向所述NRF网元发送第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
结合第十三方面，在一种可能的实现方式中，所述接收单元接收来自所述接入网设备的第四消息或者第六消息包括NG配置更新消息。
结合第十三方面，在一种可能的实现方式中，所述发送单元向所述NRF网元发送的第七消息或者第八消息包括网元更新消息。
第十四方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括接入网设备和第二设备，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：发送单元，用于向所述接入网设备发送第三消息，所述第三消息包括所述第二设备的标识。所述第二设备包括所述通信装置。
结合第十四方面，在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
结合第十四方面，在一种可能的实现方式中，所述发送单元，还用于向所述接入网设备发送第五消息，所述第五消息用于指示释放F1链接。
第十五方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括第二设备、接入和移动性管理功能AMF网元和网络存储功能NRF网元，所述第二设备为移动接入回传 一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收来自所述AMF网元的第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识；存储单元，用于存储所述第二设备的标识以及所述第二设备对应的小区标识。所述NRF网元包括所述通信装置。
结合第十五方面，在一种可能的实现方式中，所述接收单元，还用于接收来自所述AMF网元的第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述存储单元，还用于删除所述第二设备的标识以及所述第二设备对应的小区标识。
结合第十五方面，在一种可能的实现方式中，所述接收单元接收来自所述AMF网元的第七消息或者第八消息包括网元更新消息。
结合第十五方面，在一种可能的实现方式中，所述无线回传网络还包括定位管理功能LMF网元，所述接收单元，还用于接收来自所述LMF网元的查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述装置还包括：发送单元，用于向所述LMF网元发送查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
第十六方面，本申请提供一种用于无线回传网络的通信装置，所述无线回传网络包括第二设备、网络存储功能NRF网元和定位管理功能LMF网元，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述装置包括：接收单元，用于接收来自终端设备的定位测量数据，所述终端设备是通过所述第二设备接入网络，所述定位测量数据包括所述第二设备对应的小区标识；发送单元，用于向所述NRF网元发送查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述接收单元，还用于接收来自所述NRF网元的查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。所述LMF网元包括所述通信装置。所述LMF网元包括所述通信装置。
第十七方面，本申请提供一种用于无线回传网络的通信装置，包括：收发器、存储器和处理器；所述收发器用于接收或发送信号或数据，所述存储器用于存储程序指令或数据，所述处理器用于调用所述存储器中的程序指令执行如上述任一方面或上述任一方面中任意一种可能的实现方式中的方法。
第十八方面，本申请提供一种计算机可读介质，所述计算机可读介质存储用于计算机执行的程序代码，所述程序代码包括用于执行如上述任一方面或上述任一方面中任意一种可能的实现方式中的方法的指令。
第十九方面，本申请提供一种计算机程序产品，所述计算机程序产品中包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得所述计算机实现如上述任一方面或上述任一方面中任意一种可能的实现方式中的方法。
第二十方面，本申请提供一种芯片，包括：输入接口、输出接口、处理器和存储器，所述输入接口、输出接口、所述处理器以及所述存储器之间通过内部连接通路相连，所述处理器用于执行所述存储器中的代码，当所述代码被执行时，所述处理器用于执行上述任一方面或上述任一方面中任意一种可能的实现方式中的方法。
附图说明
图1是适用于本申请的技术方案的IAB网络系统的架构图；
图2是适用于本申请的技术方案的IAB网络架构及接口的示意图；
图3是适用于图2所示IAB网络架构的通信方法的流程图；
图4是包含MBSR的通信系统示意图；
图5是本申请实施例提供的MBSR小区的定位流程的示意图；
图6是本申请实施例的一种小区标识的更新方法的示意图；
图7是本申请实施例的另一种小区标识的更新方法的示意图；
图8是本申请实施例的另一种小区标识的更新方法的示意图；
图9是本申请实施例的另一种小区标识的更新方法的示意图；
图10是本申请实施例的另一种小区标识的更新方法的示意图；
图11是本申请实施例的另一种小区标识的更新方法的示意图；
图12是本申请实施例提供的一种用于无线回传网络的通信装置的结构示意图；
图13是本申请实施例提供的另一种用于无线回传网络的通信装置的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例提及的通信系统包括但不限于：窄带物联网(narrow band-internet of things，NB-IoT)系统、无线局域网(wireless local access network，WLAN)系统、长期演进(Long Term Evolution，LTE)系统、5G移动通信系统或者5G之后的演进通信系统。
参见图1，图1是适用于本申请的技术方案的IAB网络系统的架构图。如图1所示，一个IAB网络系统至少包括一个基站100，以及基站100所服务的一个或多个终端设备(terminal)101，一个或多个中继节点(也即，IAB节点)110，以及IAB节点110所服务的一个或多个终端设备111。通常，基站100被称为宿主基站(donor next generation node B，DgNB)，IAB节点110通过无线回传链路113连接到基站100。宿主基站在本申请中也称为宿主节点，即，Donor节点。IAB网络也称为无线回传网络。
基站100包括但不限于：演进型节点B(evolved node base，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(home evolved NodeB，或home node B，HNB)、基带单元(baseband Unit，BBU)、演进的(evolved LTE，eLTE)基站、NR基站(next generation node B，gNB)等。
终端设备包括但不限于：用户设备(user equipment，UE)、移动台、接入终端、用户单元、用户站、移动站、远方站、远程终端、移动设备、终端、无线通信设备、用户代理、无线局域网(wireless local access network，WLAN)中的站点(station，ST)、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备、连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的移动台以及未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的终端设备等中的任意一种。
IAB节点是中继节点的特定的名称，不对本申请的方案构成限定，可以是一种具有转发功能的网络类型中继(例如基站)或者具有转发功能的终端类型中继(例如终端设备)。
IAB网络系统还可以包括多个其它IAB节点，例如，IAB节点120和IAB节点130。如图1所示，IAB节点120通过无线回传链路123连接到IAB节点110以接入到网络。IAB节点130通过无线回传链路133连接到IAB节点110以接入到网络。IAB节点120为一个或多个终端设备121服务，IAB节点130为一个或多个终端设备131服务。图1中，IAB节点110和IAB节点120都通过无线回传链路连接到网络。在本申请中，无线回传链路都是从中继节点的角度来看的，例如无线回传链路113是IAB节点110的回传链路，无线回传链路123是IAB节点120的回传链路。中继节点可以经过多级无线中继节点连接到网络。应理解，本申请中用IAB节点仅仅出于描述的需要，并不表示本申请的方案仅用于NR的场景，在本申请中，IAB节点可以泛指任何具有中继功能的节点或设备，本申请中的IAB节点和中继节点的使用应理解具有相同的含义。
为了便于理解，下面对本申请实施例涉及的基本术语进行简单介绍。
1、无线回传节点、宿主节点
本申请实施例中，将支持一体化的接入和回传的节点称为无线回传节点。在LTE通信系统中，该无线回传节点又可以称为中继节点(relay node，RN)，在5G中，无线回传节点又可以称为IAB节点(IAB node)。无线回传节点可以具有移动终端(mobile terminal，简称MT)的角色以及分布式单元(distributed unit，简称DU)的角色，即无线回传节点可以包括至少一个MT单元，该无线回传节点可以通过该至少一个MT单元与该无线回传节点的至少一个父节点(IAB donor或者其他IAB nodes)之间建立回传链路。IAB节点的DU部分可以为终端或其他IAB节点的MT部分提供接入服务。为了便于描述，下面以IAB节点为例进行说明。
IAB节点可以为终端设备提供无线接入服务，该终端设备的数据(可以包括用户面数据和控制面信令)由IAB节点通过无线回传链路连接到宿主节点传输。
在本申请实施例中，宿主节点又称为IAB宿主(IAB donor)或者宿主基站(donor gNodeB，DgNB)。具体地，DgNB可以是一个具有完整基站功能的接入网网元，也可以是包括集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)分离形态的接入网网元。CU主要处理非实时的无线高层协议栈功能(包括无线资源控制RRC层/分组数据汇聚协议PDCP层)，DU主要处理物理层功能和实时性需求较高的层2功能(物理PHY层/介质访问控制MAC层/无线链路控制RLC层)。DgNB连接到为终端设备服务的核心网网元，例如，连接到5G核心网(5G core，5GC)，并为IAB节点提供无线回传功能。为了便于表述，本申请实施例将宿主节点的集中式单元简称为宿主CU(donor CU)，将宿主节点的分布式单元简称为宿主DU(donor DU)，其中，donor CU还有可能是控制面(control plane，CP)或用户面(user plane，UP)分离的形态，例如，一个CU包括一个CU-CP和多个CU-UP组成，本申请实施例对此不作限定。
2、接入链路
终端设备和为它提供无线接入服务的节点(例如，IAB节点、宿主节点或者宿主DU)进行通信时所使用的无线链路，包括用于上行传输的接入链路和下行传输的接入链路。用于上行传输的接入链路也被称为上行接入链路或接入上行链路，其传输方向是从该终端设备至该节点；用于下行传输的接入链路也被称为下行接入链路或接入下行链路，其传输方向是从该节点至该终端设备。
3、回传链路
回传链路是指某个IAB节点和它的父节点进行通信时所使用的无线链路，其父节点可以是一个IAB节点也可以是宿主节点，包括用于上行传输的回传链路和下行传输的回传链路。例如，图1中，IAB节点120的父节点是IAB节点110，IAB节点110的父节点为基站100。用于上行传输的回传链路也被称为上行回传链路或回传上行链路，其传输方向是从该IAB节点至该IAB节点的父节点。用于下行传输的回传链路也被称为下行回传链路或回传下行链路，其传输方向是该IAB节点的父节点至该IAB节点。
参见图2，图2是适用于本申请的技术方案的IAB网络架构及接口的示意图。如图2所示，IAB结构包括5G核心网(5GC)、包括基站(gNB)、IAB宿主(IAB donor)和IAB节点(IAB node)的NG无线接入网(NG RAN)，IAB节点通过IAB宿主接入网络。具体地，5GC通过NG接口与一个或多个gNB(或者IAB宿主)连接。IAB宿主包括宿主CU(donor CU)和宿主DU(donor DU)，宿主CU和宿主DU之间通过F1接口连接，宿主CU通过NG接口与5GC连接，宿主CU通过Xn-C接口与gNB连接。IAB节点包括IAB MT和IAB DU，IAB MT通过NR Uu接口与宿主DU连接，IAB DU通过F1接口与宿主CU连接。
基于图2的IAB结构，下面对IAB MT入网、F1建立和小区激活流程进行简要说明。参照图3，图3是适用于图2所示IAB网络架构的通信方法的流程图。如图3所示，该通信方法包括：
步骤301.IAB节点通过MT功能与服务IAB节点的无线接入网(radio access network，RAN)建立RRC连接。
具体地，IAB MT进行小区选择，选择合适的小区完成RRC连接建立后，通过RRC Setup Complete消息向网络指示其具有移动能力(也即，指示其为IAB节点)，并通过服务IAB MT的RAN发送注册请求消息。上述过程中，IAB节点的初始接入与常规UE相同。
步骤302.RAN通过N2消息将注册请求消息发送至5G核心网，同时在N2消息中指示注册网络的是IAB节点，网络将对该IAB节点进行身份验证。
步骤303.IAB MT完成注册流程，成功注册到网络中。
步骤304.IAB MT发起会话建立，网络给IAB MT分配互联网协议IP地址，IAB MT使用该IP地址与操作管理和维护(operation administration and maintenance,OAM)进行交互。
步骤305.OAM给IAB节点配置小区信息。小区信息包括如小区标识、跟踪区域码(tracking area code，TAC)等。
步骤306.IAB DU选择合适的IAB donor，并向IAB donor的donor CU发送F1建立请求(F1 step  request)消息。F1建立请求消息包括该IAB DU支持的小区信息，如小区标识、TAC等信息。
步骤307.donor CU激活IAB DU的小区。可选地，donor DU可以通过配置更新流程向5G核心网发送配置信息，该配置信息中携带TAC的信息。
步骤308.donor CU向IAB DU发送F1建立响应，F1建立响应包括激活后的小区信息(cells to be activated list)，激活后的小区信息包括小区标识、TAC等信息。
上述步骤306至步骤308为IAB节点的F1建立流程。
上述通信过程，IAB节点通常为地面上固定不动的中继设备。现有的5G定位方案中，UE向网络发送上行定位消息(UL positioning message)，该上行定位消息包含了测量结果，测量结果包含了小区标识，网络(如位置管理服务LMF网元)基于小区标识可以确定UE是基于哪个小区做的测量。进一步地，网络根据该小区的位置以及测量结果确定UE的位置。可以理解为，现有的小区都是固定的，网络可以提前获知小区的地理位置信息，结合UE上报的测量结果对UE进行定位。
然而，如果UE接入的小区是移动基站中继(mobile base station relay，MBSR)，MBSR又称为VMR或者mobile IAB，该小区处于移动状态，那么当UE使用MBSR的小区信号执行定位测量，网络需要获知MBSR小区的位置，才能准确地计算UE的位置信息。参见图4，图4是包含MBSR的通信系统示意图。如图4所示，用户携带智能终端乘坐一车辆，车辆上安装的MBSR可以向车内用户提供5G接入服务，随着车辆的移动，MBSR小区的位置不断变化，虽然用户携带的智能终端可以使用MBSR小区信号进行定位测量，但是网络并不知道该小区当前的位置。
对此，网络还需要对MBSR发起定位，以获取MBSR的小区位置。参见图5，图5是本申请实施例提供的MBSR小区的定位流程的示意图。如图5所示，该定位流程包括：
步骤500.LMF网元通过发送接收点(transmission-reception point,TRP)信息交互流程，获知某个小区标识对应的小区是否是移动的小区。步骤500，可以包括：
步骤500A.LMF网元向宿主基站(donor gNB)发送NRPPa TRP信息请求(NRPPa TRP information request)。
步骤500B.宿主基站向MBSR发送F1TRP信息请求。MBSR是宿主基站覆盖范围内的其中一个移动中继设备。
步骤500C.MBSR向宿主基站发送F1TRP信息响应，F1TRP信息响应包括移动性指示(mobile indication)，移动性指示用于告知MBSR的小区是移动的小区。可选地，F1TRP信息响应包括MBSR的小区标识。
步骤500D.宿主基站向LMF网元发送NRPPa TRP信息响应(NRPPa TRP information response)，NRPPa TRP信息响应包括移动性指示。可选地，NRPPa TRP信息响应包括MBSR的小区标识。
步骤501.当网络需要对某个UE发起定位流程时，接入和移动性管理功能AMF网元触发对该UE发起定位。
步骤502.AMF网元向LMF网元发送定位请求，如发送Nlmf_Location_Determine location Request，定位请求用于请求LMF网元对UE发起定位。
步骤503.执行现有的定位流程。具体地，当UE使用MBSR的小区信号执行定位测量，UE会在上行定位消息中携带定位测量数据，其中定位测量数据中包含小区标识(cell ID)。
可选地，若步骤500D中F1TRP信息响应的小区标识与UE上报的定位测量数据中包含小区标识相同，LMF网元可获知定位测量数据中包含的小区标识对应的小区具有移动性，LMF网元可执行如下步骤：
步骤504A.LMF网元向宿主基站发送小区位置请求，如发送NRPPa TRP信息请求，NRPPa TRP信息请求包括MBSR的小区标识。
步骤504B.宿主基站向MBSR发送小区位置请求，如发送F1TRP信息请求，该F1TRP信息请求包括MBSR的小区标识。
步骤504C.MBSR向宿主基站发送小区位置响应，如发送F1TRP信息响应，该F1TRP信息响应包括MBSR的小区标识对应的小区的位置信息。
步骤504D.宿主基站向LMF网元发送小区位置响应，如发送NRPPa TRP信息响应，该NRPPa TRP信息响应包括MBSR的小区标识对应的小区的位置信息。
基于步骤504A至步骤504D，LMF网元可获知移动小区最新的位置信息。
步骤505.LMF网元向AMF网元发送定位响应，定位响应包括UE的位置。
具体地，LMF网元根据步骤503中UE上报的定位测量数据，以及步骤504D中MBSR的小区标识对应的小区的位置信息，确定UE的位置。
基于图5描述的定位流程可知，MBSR在移动过程中，同一个MBSR广播的小区标识可能发生改变，这样就导致一个问题：UE的上行定位消息中包含的MBSR的小区标识可能与LMF网元保存的MBSR的小区标识(即，通过上述步骤500获知的MBSR的小区标识)不同，一旦MBSR改变了小区标识，LMF网元保存的MBSR的小区标识就会无效，从而导致基于LMF网元保存的MBSR的小区标识，通过步骤504A至步骤504D的流程，获取的小区位置信息不准确。示例性地，步骤500中，MBSR的小区标识为Cell ID#1,MBSR在移动过程中，小区标识从Cell ID#1改变成Cell ID#2。此时，如果UE使用MBSR的小区信号执行定位测量时，UE会在上行定位消息中携带定位测量数据，其中定位测量数据中包含的小区标识为Cell ID#2，这样LMF在接收到Cell ID#2之后，就无法判断出该Cell ID#2对应的小区是否是移动性的。由于LMF只保存了Cell ID#1对应的小区具有移动性，那么LMF此时就不会发起步骤504A至步骤504D的流程。由于LMF没有获取的MBSR的小区位置信息，LMF只根据上行定位消息中携带的定位测量数据计算的UE位置信息是不准确的。可见，导致UE定位结果不佳的主要原因是：目前MBSR的小区标识发生改变，网络并不知道其最新的小区标识。
基于上述问题，本申请实施例提出一种小区标识的更新方法，当网络获知某个小区是移动小区，可以触发向该小区对应的MBSR订阅小区标识更新事件，以便及时获知MBSR广播的最新的小区标识。执行上述订阅流程的网元可以是LMF网元或AMF网元，对此本申请实施例不作限定。此外，还可以在F1建立(F1 setup)流程中，MBSR向服务MBSR的宿主基站发送MBSR标识，宿主基站将该MBSR小区的信息(包括MBSR标识、小区标识以及移动性指示)发送至核心网的网络存储功能NRF网元，当MBSR小区的信息发生改变时，NRF存储的该信息会相应更新，从而保证网络获取的某个MBSR的小区标识是最新的。综上，上述任一方案都能够确保网络及时获知MBSR广播的最新的小区标识，进而可提升对接入该MBSR的UE的定位效果。
图6是本申请实施例的一种小区标识的更新方法的示意图。该方法可以应用于包括第一设备、第二设备和第三设备的通信系统中，图6以第一设备为LMF网元，第二设备为移动性回传一体化节点(mobile IAB)或者移动基站中继MBSR节点(下文以MBSR描述)，第三设备为AMF以例进行方案说明。如图6所示，该方法包括：
步骤601.LMF网元向AMF网元发送第一消息，第一消息用于订阅MBSR对应的小区标识的更新事件。
具体地，LMF网元在获知MBSR具有移动能力时，LMF网元向AMF网元发送第一消息。示例性地，MBSR向服务MBSR的接入网设备发送移动性指示，LMF网元通过接入网设备获知MBSR具有移动能力。
可选地，第一消息中携带MBSR的标识和订阅事件，该订阅事件用于订阅MBSR对应的小区标识的更新。
作为一种实现方式，第一消息可以是服务化操作Namf_EventExposure_Subscribe。
步骤602.AMF网元向MBSR发送第一消息。
可选地，第一消息包括MBSR的标识。
步骤603.MBSR向AMF网元发送第二消息，第二消息用于通知更新后的第二设备对应的小区标识。
具体地，MBSR对应的小区标识发生改变时，MBSR向AMF网元发送第二消息。可选地，第二消息包括MBSR对应的小区标识。可选地，第二消息还包括MBSR的标识。
作为一种可选的实施例，MBSR在同一个接入网设备的覆盖范围内发生移动，MBSR广播其新的小区标识，此时，MBSR可以向AMF网元发送第二消息。
作为一个可选的实施例，MBSR从接入网设备1移动到接入网设备2，MBSR广播其新的小区标识，此时，MBSR可以向AMF网元发送第二消息。其中新的小区标识可以是接入网设备2 为MBSR分配的小区标识。
步骤604.AMF网元向LMF网元发送第二消息。
作为一个可选的实施例，LMF网元接收第二消息后，在本地更新MBSR对应的小区标识。
本实施例中，接入网设备可以为宿主基站。
本实施例示出的小区标识的更新方法，LMF网元在获知MBSR对应的小区具有移动性时，LMF网元可以发起订阅流程，以便及时获知MBSR广播的最新的小区标识。这样，LMF网元基于MBSR广播的最新的小区标识获取MBSR当前的位置信息，并根据通过该MBSR连接网络的UE上报的定位测量数据以及获取的MBSR当前的位置信息确定UE的位置信息。由于LMF及时获知MBSR广播的最新的小区标识，上述定位测量数据中MBSR的小区标识与LMF网元本地保存的MBSR的小区标识能够保持一致，可提升对UE的定位精度。
基于图6所示的技术方案，下面结合一个具体实施例对小区标识的更新方法进行详细说明。图7是本申请实施例的另一种小区标识的更新方法的示意图。如图7所示，本实施例的小区标识的更新方法，包括：
步骤701.MBSR DU与宿主基站1完成F1建立(F1 setup)流程。
MBSR通过宿主基站1连接网络。F1建立流程为现有流程，可参考现有技术。
步骤702.LMF网元向宿主基站1发送NRPPa TRP信息请求，NRPPa TRP信息请求用于请求宿主基站1提供该宿主基站1的TRP的详细信息(例如TRP的地理坐标)。
步骤703.宿主基站1向MBSR DU发送F1TRP信息请求。
步骤704.MBSR DU向宿主基站1发送F1TRP信息响应。F1TRP信息响应包括MBSR MT的标识(例如，通用公共用户标识(Generic Public Subscription Identifier,GPSI))、MBSR的小区标识(例如，下一代全球小区识别码(Next generation Cell Global Identifier,NR CGI))和移动性指示(mobile indication)，移动性指示用于通知MBSR具有移动能力。
步骤705.宿主基站1向LMF网元发送NRPPa TRP信息响应。NRPPa TRP信息响应包括MBSR MT的标识、MBSR的小区标识和移动性指示。至此，LMF网元可以获知MBSR具有移动能力(或者说，MBSR对应的小区具有移动性)。
应理解，NRPPa TRP信息响应包括宿主基站1的TRP信息，TRP信息包括宿主基站1的一个或多个子节点(例如一个或多个MBSR)的详细信息。
步骤706.LMF网元在本地存储MBSR MT的标识、小区标识和移动性指示的对应关系。
步骤707.LMF网元向统一数据管理(Unified Data Management，UDM)网元查询MBSR MT对应的AMF网元的标识。
具体地，LMF网元调用UDM网元的服务化操作Nudm_UECM_Get Request，该服务化操作中携带MBSR MT的标识，UDM网元根据MBSR MT的标识确定该MBSR MT对应的AMF网元的标识。
步骤708.LMF网元向AMF网元(MBSR对应的AMF网元)发送订阅请求，订阅请求用于订阅MBSR对应的小区标识的更新事件。
本实施例中，订阅请求可对应图6所示实施例的第一消息。订阅请求包括MBSR MT的标识。
步骤709.AMF网元向MBSR MT发送订阅请求。
作为另一种实现方式，AMF网元可以向MBSR MT发送下行NAS消息，该下行NAS消息中携带订阅事件，该订阅事件用于订阅MBSR对应的小区标识的更新。
步骤710.MBSR MT向MBSR DU转发订阅请求。
步骤711.MBSR从宿主基站1移动到宿主基站2。
步骤712.MBSR DU与宿主基站2完成F1建立流程，宿主基站2给MBSR DU分配新的小区标识。
步骤713.MBSR DU向MBSR MT发送订阅通知，订阅通知用于通知更新后的MBSR对应的小区标识。
本实施例中，订阅通知可对应图6所示实施例的第二消息。可选地，订阅通知包括更新后的MBSR对应的小区标识。可选地，订阅通知还可以包括MBSR MT的标识。
步骤714.MBSR MT向AMF网元发送订阅通知。
步骤715.AMF网元向LMF网元发送订阅通知。
步骤716.LMF网元在本地更新MBSR MT的标识、小区标识和移动性指示的对应关系。
步骤717.AMF网元触发对UE的定位流程。
步骤718.UE向LMF网元上报定位测量数据，定位测量数据中包括新的MBSR对应的小区标识，该过程可参考现有技术。
步骤719.LMF网元根据UE的定位测量数据中新的MBSR对应的小区标识获取MBSR小区的位置信息，用于UE的定位。
本实施例示出的小区标识的更新方法，LMF网元在获知MBSR对应的小区具有移动性时，LMF网元可以发起订阅流程，以便及时获知MBSR广播的最新的小区标识。LMF网元基于MBSR广播的最新的小区标识获取MBSR当前的位置信息，并根据通过该MBSR连接网络的UE上报的定位测量数据以及获取的MBSR当前的位置信息确定UE的位置信息，定位结果更加准确。
图8是本申请实施例的另一种小区标识的更新方法的示意图。该方法可以应用于包括第一设备、第二设备和第三设备的通信系统中，图8以第一设备为AMF网元，第二设备为移动性回传一体化节点(mobile IAB)或者移动基站中继MBSR节点(下文以MBSR描述)，第三设备为接入网设备以例进行方案说明。如图8所示，该方法包括：
步骤801.AMF网元向接入网设备发送第一消息，第一消息用于订阅MBSR对应的小区标识的更新事件。
具体地，AMF网元在获知MBSR具有移动能力时，AMF网元向接入网设备发送第一消息。示例性地，MBSR在注册流程中，向服务MBSR的接入网设备指示其具有移动能力，AMF网元通过接入网设备获知MBSR具有移动能力。
可选地，第一消息包括MBSR的标识。
步骤802.接入网设备向AMF网元发送第二消息，第二消息用于通知更新后的第二设备对应的小区标识。
具体地，接入网设备获知MBSR对应的小区标识发生改变时，接入网设备向AMF网元发送第二消息。示例性地，接入网设备接收MBSR广播的小区标识，获知MBSR对应的小区标识发生改变。可选地，第二消息包括MBSR对应的小区标识。可选地，第二消息还包括MBSR的标识。
作为一个可选的实施例，MBSR在同一个接入网设备的覆盖范围内发生移动，MBSR广播其新的小区标识，接入网设备接收MBSR广播的小区标识，获知MBSR对应的小区标识发生改变，接入网设备向AMF网元发送第二消息，以通知更新后的MBSR对应的小区标识。
作为一个可选的实施例，MBSR从接入网设备1移动到接入网设备2，MBSR广播其新的小区标识，新的小区标识可以是接入网设备2为MBSR分配的小区标识。由接入网设备2向AMF网元发送第二消息，以通知更新后的MBSR对应的小区标识。需要说明的是，本实施例中，MBSR从接入网设备1移动到接入网设备2，接入网设备1需要向接入网设备2发送第一消息，以使接入网设备2获知AMF网元订阅了MBSR对应的小区标识的更新事件。
本实施例中，接入网设备可以为宿主基站。
本实施例示出的小区标识的更新方法，AMF网元在获知MBSR对应的小区具有移动性时，AMF网元可以发起订阅流程，以便及时获知MBSR广播的最新的小区标识。这样，LMF网元可以从AMF网元获取MBSR广播的最新的小区标识，从而获知MBSR当前的位置信息。LMF网元根据通过该MBSR连接网络的UE上报的定位测量数据以及获取的MBSR当前的位置信息确定UE的位置信息，由于LMF及时获知MBSR广播的最新的小区标识，上述定位测量数据中MBSR的小区标识与LMF网元本地保存的MBSR的小区标识能够保持一致，可提升对UE的定位精度。
基于图8所示的技术方案，下面结合一个具体实施例对小区标识的更新方法进行详细说明。
图9是本申请实施例的另一种小区标识的更新方法的示意图。如图9所示，本实施例的小区标识的更新方法，包括：
步骤901.MBSR通过宿主基站1发起注册流程，注册到MBSR-AMF。
本实施例中，MBSR MT通过宿主基站发起注册流程，向网络发送注册请求消息。具体地， 在RRC消息中，MBSR MT向宿主基站1指示MBSR具有移动能力，宿主基站1选择AMF网元(即MBSR-AMF，服务MBSR的AMF)，并在N2消息中向该AMF网元指示该MBSR具有移动能力。至此，MBSR注册到MBSR-AMF上。
步骤902.MBSR-AMF向宿主基站1发送订阅请求，订阅请求用于订阅MBSR对应的小区标识的更新事件。
本实施例中，MBSR-AMF获知MBSR具有移动能力，MBSR-AMF向宿主基站1发送订阅请求，订阅请求可对应图8所示实施例的第一消息。订阅请求包括MBSR MT的标识。
步骤903.MBSR DU与宿主基站1完成F1建立流程。
本实施例中，F1建立流程可参照现有技术，在该过程中，MBSR DU支持的小区被激活，且MBSR广播的小区标识(例如，NR CGI1)可由MBSR DU上报给宿主基站1。
步骤904.宿主基站1向MBSR-AMF发送订阅通知，订阅通知用于通知MBSR对应的小区标识。
本实施例中，订阅通知可对应图8所示实施例的第二消息。订阅通知包括MBSR对应的小区标识(例如，NR CGI1)。
可选地，在一些实施例中，在执行步骤902之前，还包括：
步骤901A.MBSR-AMF向宿主基站1发送请求消息，该请求消息用于请求MBSR对应的小区标识。
示例性地，当MBSR-AMF获知MBSR具有移动能力，MBSR-AMF向宿主基站1发送位置上报控制(Location Reporting Control)消息，该消息中包含上报类型Reporting Type，Reporting Type用于指示宿主基站1向MBSR-AMF上报MBSR对应的小区标识。
步骤901B.MBSR DU与宿主基站1完成F1建立流程。
本实施例中，F1建立流程可参照现有技术，在该过程中，MBSR DU支持的小区被激活，且MBSR广播的小区标识(例如，NR CGI1)可由MBSR DU上报给宿主基站1。
步骤901C.宿主基站1向MBSR-AMF返回响应消息，该响应消息中包含MBSR对应的小区标识。示例性地，宿主基站1向MBSR-AMF返回Location Report消息，该消息中包含MBSR对应的小区标识。
步骤905.MBSR-AMF在本地存储MBSR MT的标识和MBSR对应的小区标识的对应关系。
步骤906.MBSR在宿主基站1的覆盖范围内移动，MBSR DU广播的小区标识发生改变。此时，MBSR DU将新的MBSR对应的小区标识发送至宿主基站1。
步骤907.宿主基站1向MBSR-AMF发送订阅通知。
可选地，订阅通知包括MBSR对应的小区标识(例如，NR CGI2)。
步骤908.MBSR-AMF在本地更新MBSR MT的标识和MBSR对应的小区标识的对应关系。
步骤909.MBSR从宿主基站1移动到宿主基站2，MBSR DU广播的小区标识发生改变。
步骤910.宿主基站1向宿主基站2发送订阅信息，订阅信息用于告知宿主基站2MBSR-AMF订阅了MBSR对应的小区标识的更新事件。
步骤911.宿主基站2向MBSR-AMF发送订阅通知。
可选地，订阅通知包括MBSR对应的小区标识(例如，NR CGI3)。
步骤912.MBSR-AMF在本地更新MBSR MT的标识和MBSR对应的小区标识的对应关系。
本实施例示出的小区标识的更新方法，AMF网元在获知MBSR对应的小区具有移动性时，AMF网元可以发起订阅流程，以便及时获知MBSR广播的最新的小区标识，这样，当其他网元，例如LMF网元，获知MBSR对应的小区具有移动性时，可以从AMF网元获取MBSR广播的最新的小区标识。
进一步地，LMF网元基于MBSR广播的最新的小区标识获取MBSR当前的位置信息，并根据通过该MBSR连接网络的UE上报的定位测量数据以及获取的MBSR当前的位置信息确定UE的位置信息，定位结果更加准确。
图10是本申请实施例的另一种小区标识的更新方法的示意图。该方法可以应用于包括接入网 设备、第二设备和核心网设备的通信系统中，第二设备为移动性回传一体化节点(mobile IAB)或者移动基站中继MBSR节点(下文以MBSR描述)，核心网设备包括AMF网元、NRF网元和LMF网元。如图10所示，该方法包括：
步骤1001.MBSR向接入网设备1发送第三消息，第三消息包括MBSR的标识(例如，MBSR MT的GPSI)。
可选地，第三消息还可以包括MBSR的小区支持的TAC。可选地，第三消息还可以包括MBSR的小区支持的NR CGI。
可选地，第三消息包括F1建立请求消息。
步骤1002.接入网设备1向AMF网元发送第四消息，第四消息包括MBSR的标识以及MBSR对应的小区标识(例如，GPSI和NR CGI1)。
可选地，第四消息中的MBSR对应的小区标识可以是接入网设备为MBSR分配的小区标识。可选地，AMF网元在本地存储MBSR的标识以及MBSR对应的小区标识。可选地，第四消息包括NG配置更新消息。
步骤1003.AMF网元向NRF网元发送第七消息，第七消息包括MBSR的标识以及MBSR对应的小区标识(例如，GPSI和NR CGI1)。
可选地，第七消息包括网元更新消息(例如，Nnrf_NFManagement_NFUpdate)。
步骤1004.NRF网元存储MBSR的标识以及MBSR对应的小区标识。
基于步骤1001至步骤1004(F1建立流程)，接入网设备1可将MBSR信息(包括MBSR的标识以及MBSR对应的小区标识)发送至NRF网元进行存储。
可选地，当MBSR从接入网设备1移动到接入网设备2，MBSR可执行步骤1005。
步骤1005.MBSR向接入网设备1发送第五消息，第五消息用于指示释放F1链接。可选地，第五消息包括MBSR的标识(例如，MBSR MT的GPSI)。
步骤1006.接入网设备1向AMF网元发送第六消息，第六消息用于指示AMF网元删除MBSR的标识以及MBSR对应的小区标识。
可选地，第六消息包括NG配置更新消息。可选地，第六消息包括MBSR的标识以及MBSR对应的小区标识(例如，GPSI和NR CGI1)。
步骤1007.AMF网元向NRF网元发送第八消息，第八消息用于指示NRF网元删除MBSR的标识以及MBSR对应的小区标识。
可选地，第八消息包括网元更新消息。可选地，第八消息包括MBSR的标识以及MBSR对应的小区标识(例如，GPSI和NR CGI1)。
步骤1008.NRF网元删除MBSR的标识以及MBSR对应的小区标识。
应理解，当MBSR从接入网设备1移动到接入网设备2，接入网设备2可基于相同的F1建立流程，将MBSR的最新信息发送至NRF网元进行更新存储，从而确保NRF网元存储最新的MBSR对应的小区标识。
可选地，当AMF网元触发对UE的定位流程，UE向网络(例如，LMF网元)上报定位测量数据，定位测量数据包括服务UE的MBSR对应的小区标识。对此，LMF网元可执行步骤1009。
步骤1009.LMF网元向NRF网元发送查询请求，查询请求用于查询与MBSR对应的小区标识关联的MBSR的标识。查询请求包括MBSR对应的小区标识。
步骤1010.NRF网元向LMF网元发送查询响应，查询响应包括与MBSR对应的小区标识关联的MBSR的标识。
MBSR移动到接入网设备2，在F1建立流程中，接入网设备2将该MBSR分配了最新的小区标识，并将最新的小区标识存储至NRF网元，从而确保核心网，例如LMF网元获取到MBSR最新的小区标识，该最新的小区标识能够与UE上报的定位测量数据中的MBSR对应的小区标识保持一致。LMF网元基于MBSR最新的小区标识从NRF网元获取与该小区标识关联的MBSR的标识，进而获取MBSR的位置信息，再根据MBSR的位置信息和UE上报的定位测量数据确定UE的位置信息，定位结果更加准确。
基于图10所示的技术方案，下面结合一个具体实施例对小区标识的更新方法进行详细说明。 图11是本申请实施例的另一种小区标识的更新方法的示意图。如图11所示，本实施例的小区标识的更新方法，包括：
步骤1101.MBSR DU向宿主基站1发送F1建立请求。
可选地，F1建立请求包括MBSR MT的标识(例如，GPSI)。可选地，F1建立请求还可以包括MBSR DU的小区支持的TAC。可选地，F1建立请求还可以包括MBSR DU的小区支持的NR CGI。
步骤1102.宿主基站1给MBSR DU分配小区标识(例如，NR CGI1)。(可选)
若步骤1101中的F1建立请求中没有携带MBSR DU的NR GCI，宿主基站1可以为MBSR DU分配一个NR CGI。
可选地，在步骤1102后，执行如下步骤：
步骤1102A.宿主基站1向AMF1发送NG配置更新(NG configuration update)消息，该NR配置更新消息用于触发网络侧存储MBSR信息(MBSR profile)，MBSR信息包括MBSR对应的小区标识和MBSR MT的标识的对应关系(例如，MBSR信息包括NR CGI1和GPSI)。
在一些实施例中，MBSR profile也可以称为mobile IAB profile。
可选地，MBSR信息还可以包括TAC等其他与MBSR小区相关的信息，对此本实施例不作限定。
步骤1102B.AMF1网元向NRF网元发送网元更新消息，网元更新消息包括MBSR信息。
可选地，作为另一种实现方式，AMF1网元也可以向其他网元，如UDM或者统一数据管理(Unified Data Management，UDR)网元发送MBSR信息。
步骤1102C.NRF网元在本地存储MBSR对应的小区标识和MBSR MT的标识的对应关系。
步骤1103.宿主基站1向MBSR DU发送F1建立响应。
可选地，F1建立响应包括MBSR对应的小区标识(例如，NR CGI1)。
步骤1104.MBSR从宿主基站1移动到宿主基站2。
步骤1105.MBSR DU与宿主基站1之间释放F1链路。具体地，MBSR DU向宿主基站1发送F1释放请求消息。
步骤1106A.宿主基站1向AMF1网元发送NG配置更新消息，该配置更新消息用于触发网络侧(例如，AMF1网元)删除MBSR信息。
其中，MBSR信息包括MBSR对应的小区标识和MBSR MT的标识的对应关系(例如，MBSR信息包括NR CGI1和GPSI)。
步骤1106B.AMF1网元向NRF网元发送网元更新消息，该网元更新消息用于触发NRF网元删除MBSR信息。
步骤1106C.NRF网元删除本地存储的MBSR信息(例如，删除MBSR的NR CGI1和GPSI)。
步骤1107.MBSR DU向宿主基站2发送F1建立请求。
可选地，F1建立请求包括MBSR MT的标识。可选地，F1建立请求还可以包括MBSR DU的小区支持的TAC。可选地，F1建立请求还可以包括MBSR DU的小区支持的NR CGI。
步骤1108.宿主基站2给MBSR DU分配小区标识(例如，NR CGI2)。(可选)
若步骤1107中的F1建立请求中没有携带MBSR DU的NR GCI，宿主基站2可为MBSR DU分配一个NR CGI。
步骤1108A至步骤1108C，与步骤1102A至步骤1102C类似，可实现例如AMF2网元触发NRF网元在本地存储MBSR信息，MBSR信息包括MBSR对应的小区标识和MBSR MT的标识的对应关系(例如，MBSR信息包括NR CGI2和GPSI)。
需要说明的是，AMF1网元和AMF2网元可以是相同的AMF网元，也可以是不同的AMF网元，对此本实施例不作限定。
步骤1109.宿主基站2向MBSR DU发送F1建立响应。
可选地，F1建立响应包括MBSR对应的小区标识(例如，NR CGI2)。
步骤1110.AMF2网元触发对UE的定位流程。
本实施例中，UE通过MBSR的小区接入网络，某一时刻，AMF2网元触发对该UR的定位流 程。
步骤1111.UE向LMF网元上报定位测量数据，定位测量数据中包括MBSR对应的小区标识(例如，NR CGI2)，该过程可参考现有技术。
步骤1112.LMF网元向NRF网元发送查询请求，查询请求用于查询与MBSR对应的小区标识关联的MBSR的标识。
可选地，查询请求包括与MBSR对应的小区标识(例如，NR CGI2)。
步骤1113.NRF网元向LMF网元发送查询响应，查询响应包括与MBSR对应的小区标识关联的MBSR MT的标识(例如，NG CGI2关联的GPSI)。
步骤1114.LMF网元获取MBSR MT的位置信息，并根据MBSR MT的位置信息和定位测量数据确定UE的位置信息。
本实施例示出的小区标识的更新方法是在F1建立流程中，MBSR向宿主基站发送MBSR MT的标识，使得宿主基站可以将包括MBSR MT的标识和MBSR对应的小区标识的MBSR信息发送至核心网的NRF网元进行存储，从而保证核心网获取到MBSR最新的小区标识。这样，当其他网元，例如LMF网元，获知MBSR对应的小区具有移动性时，可以从NRF网元获取MBSR广播的最新的小区标识。
进一步地，LMF网元基于MBSR广播的最新的小区标识获取MBSR当前的位置信息，并根据通过该MBSR连接网络的UE上报的定位测量数据以及获取的MBSR当前的位置信息确定UE的位置信息，定位结果更加准确。
本申请实施例中，其他网元，例如SMF网元或者AMF网元，也可以通过NRF网元请求获取MBSR对应的小区标识关联的MBSR的标识。
上文中结合图6至图11，描述了本申请实施例的小区标识的更新方法，下面结合图12和图13，描述本申请实施例的用于无线回传网络的通信装置。
图12是本申请实施例提供的一种用于无线回传网络的通信装置的结构示意图。如图12所示，该装置1200可以是LMF网元；或者，该装置1200也可以是第二设备(即移动接入回传一体化节点或者移动基站中继节点)；或者，该装置1200也可以是AMF网元；或者，该装置1200也可以是接入网设备(例如宿主基站)；或者，该装置1200也可以是NRF网元。该装置1200包括：发送单元1201和接收单元1202。
在该装置1200是LMF网元的一种可能的实现方式中，发送单元1201，用于在获知所述第二设备具有移动能力时，发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；接收单元1202，用于在所述第二设备对应的小区标识发生改变时，接收第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述发送单元1201，用于向所述第三设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述接收单元1202，用于通过所述第三设备接收所述第二消息。所述第三设备为接入和移动性管理功能AMF网元。
在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
在该装置1200是第二设备(即移动接入回传一体化节点或者移动基站中继节点)的一种可能的实现方式中，接收单元1202，用于接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；发送单元1201，用于在所述第二设备对应的小区标识发生改变时，发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
在一种可能的实现方式中，所述接收单元1202，用于通过所述第三设备接收来自所述第一设备的所述第一消息；所述发送单元1201，用于通过所述第三设备向所述第一设备发送所述第二消息。所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
在该装置1200是AMF网元的一种可能的实现方式中，发送单元1201，用于在获知所述第二 设备具有移动能力时，发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；接收单元1202，用于在所述第二设备对应的小区标识发生改变时，接收第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述发送单元1201，用于向所述第三设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；所述接收单元1202，用于通过所述第三设备接收所述第二消息。所述第三设备为接入网设备。
在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
在该装置1200是接入网设备的一种可能的实现方式中，接收单元1202，用于接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；发送单元1201，用于在获知所述第二设备对应的小区标识发生改变时，发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述接收单元1202，用于接收来自所述第一设备的所述第一消息；所述发送单元1201，用于向所述第一设备发送所述第二消息。所述第一设备为接入和移动性管理功能AMF网元。
在一种可能的实现方式中，所述第一消息包括所述第二设备的标识。
在一种可能的实现方式中，所述第二消息包括更新后的所述第二设备对应的小区标识。
在该装置1200是接入网设备的另一种可能的实现方式中，接收单元1202，用于接收来自所述第二设备的第三消息，所述第三消息包括所述第二设备的标识；发送单元1201，用于向AMF网元发送第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
在一种可能的实现方式中，所述接收单元1202，还用于接收来自所述第二设备的第五消息，所述第五消息用于指示释放F1链接；所述发送单元1201，还用于向所述AMF网元发送第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
在一种可能的实现方式中，所述发送单元1201向所述AMF网元发送的第四消息或者第六消息包括NG配置更新(NG configuration update)消息。
在该装置1200是AMF网元的另一种可能的实现方式中，接收单元1202，用于接收来自所述接入网设备的第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识；发送单元1201用于向NRF网元发送第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述第四消息中的所述第二设备对应的小区标识是所述接入网设备为所述第二设备分配的小区标识。
在一种可能的实现方式中，所述接收单元1202，还用于接收来自所述接入网设备的第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述发送单元1201，还用于向所述NRF网元发送第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
在一种可能的实现方式中，所述接收单元1202接收来自所述接入网设备的第四消息或者第六消息包括NG配置更新消息。
在一种可能的实现方式中，所述发送单元1201向所述NRF网元发送的第七消息或者第八消息包括网元更新消息。
在该装置1200是第二设备(即移动接入回传一体化节点或者移动基站中继节点)的另一种可能的实现方式中，发送单元1201，用于向所述接入网设备发送第三消息，所述第三消息包括所述 第二设备的标识。
在一种可能的实现方式中，所述第三消息包括F1建立请求(F1 step request)消息。
在一种可能的实现方式中，所述发送单元1201，还用于向所述接入网设备发送第五消息，所述第五消息用于指示释放F1链接。
在该装置1200是NRF网元的另一种可能的实现方式中，接收单元1202，用于接收来自所述AMF网元的第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识；存储单元，用于存储所述第二设备的标识以及所述第二设备对应的小区标识。所述第二设备为移动接入回传一体化节点或者移动基站中继节点。
在一种可能的实现方式中，所述接收单元1202，还用于接收来自所述AMF网元的第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；所述存储单元，还用于删除所述第二设备的标识以及所述第二设备对应的小区标识。
在一种可能的实现方式中，所述接收单元1202接收来自所述AMF网元的第七消息或者第八消息包括网元更新消息。
在一种可能的实现方式中，所述接收单元1202，还用于接收来自所述LMF网元的查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述装置还包括：发送单元1201，用于向所述LMF网元发送查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
在该装置1200是LMF网元的另一种可能的实现方式中，接收单元1202，用于接收来自终端设备的定位测量数据，所述终端设备是通过所述第二设备接入网络，所述定位测量数据包括所述第二设备对应的小区标识；所述第二设备为移动接入回传一体化节点或者移动基站中继节点。发送单元1201，用于向所述NRF网元发送查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；所述接收单元1202，还用于接收来自所述NRF网元的查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，此处不再赘述。
应理解，这里的装置1200以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(application specific integrated circuit，ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中，本领域技术人员可以理解，装置1200可以为上述实施例中的LMF网元，装置1200可以用于执行上述方法实施例中与LMF网元对应的各个流程和/或步骤；或者，装置1200可以为上述实施例中的MBSR节点，装置1200可以用于执行上述方法实施例中与MBSR节点对应的各个流程和/或步骤；或者，装置1200可以为上述实施例中的AMF网元，装置1200可以用于执行上述方法实施例中与AMF网元对应的各个流程和/或步骤；或者，装置1200可以为上述实施例中的宿主基站，装置1200可以用于执行上述方法实施例中与宿主基站对应的各个流程和/或步骤；或者，装置1200可以为上述实施例中的NRF网元，装置1200可以用于执行上述方法实施例中与NRF网元对应的各个流程和/或步骤，为避免重复，在此不再赘述。
上述各个方案的装置1200具有实现上述方法中相应步骤的功能；所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块；例如发送单元可以由发射机替代，接收单元可以由接收机替代，其它单元，如处理单元等可以由处理器替代，分别执行各个方法实施例中的收发操作以及相关的处理操作。
在本申请实施例中，图12中的装置也可以是芯片或者芯片系统，例如：片上系统(system on chip，SoC)。对应的，收发单元(包括接收单元和发送单元)可以是该芯片的收发电路，在此不做限定。
图13是本申请实施例提供的另一种用于无线回传网络的通信装置的结构示意图。应理解，装置1300可以为上述实施例中的LMF网元，并且可以用于执行上述方法实施例中与LMF网元对应的各个流程和/或步骤；或者，装置1300可以为上述实施例中的MBSR节点，并且可以用于执行上述方法实施例中与MBSR节点对应的各个流程和/或步骤；或者，装置1300可以为上述实施例 中的AMF网元，并且可以用于执行上述方法实施例中与AMF网元对应的各个流程和/或步骤；或者，装置1300可以为上述实施例中的宿主基站，并且可以用于执行上述方法实施例中与宿主基站对应的各个流程和/或步骤；或者，装置1300可以为上述实施例中的NRF网元，并且可以用于执行上述方法实施例中与NRF网元对应的各个流程和/或步骤。
装置1300包括收发器1310、存储器1320和处理器1330；收发器1310、存储器1320和处理器1330通过内部连接通路互相通信。所述收发器1310用于接收或发送信号或数据，所述存储器1320用于存储程序指令或数据，所述处理器1330用于调用所述存储器1320中的程序指令以实现装置1300中各种可能的实现方式中的方法。
可选地，存储器1320可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如，存储器还可以存储设备类型的信息。
应理解，在本申请实施例中，上述装置1300的处理器1310可以是中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
本申请还提供一种计算机可读介质，所述计算机可读介质存储用于计算机执行的程序代码，所述程序代码包括用于执行如上述任一方法实施例中各个网元或设备的方法的指令。
本申请还提供一种计算机程序产品，所述计算机程序产品中包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得所述计算机实现如上述任一方法实施例中各个网元或设备的方法。
第二十方面，本申请提供一种芯片，包括：输入接口、输出接口、处理器和存储器，所述输入接口、输出接口、所述处理器以及所述存储器之间通过内部连接通路相连，所述处理器用于执行所述存储器中的代码，当所述代码被执行时，所述处理器用于执行上述任一方法实施例中各个网元或设备的方法。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器执行存储器中的指令，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个 计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (30)

  1. 一种小区标识的更新方法，其特征在于，应用于包括第一设备和第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述第一设备获知所述第二设备具有移动能力时，所述第一设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；
    所述第二设备对应的小区标识发生改变时，所述第一设备接收第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
  2. 根据权利要求1所述的方法，其特征在于，所述通信系统还包括第三设备，所述第一设备发送第一消息，包括：
    所述第一设备向所述第三设备发送第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；
    所述第一设备接收第二消息，包括：
    所述第一设备通过所述第三设备接收所述第二消息。
  3. 根据权利要求2所述的方法，其特征在于，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元；或者
    所述第一设备为AMF网元，所述第三设备为接入网设备。
  4. 根据权利要求1所述的方法，其特征在于，所述第一消息包括所述第二设备的标识。
  5. 根据权利要求1所述的方法，其特征在于，所述第二消息包括更新后的所述第二设备对应的小区标识。
  6. 一种小区标识的更新方法，其特征在于，应用于包括第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述第二设备接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；
    所述第二设备对应的小区标识发生改变时，所述第二设备发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
  7. 根据权利要求6所述的方法，其特征在于，所述通信系统还包括第一设备和第三设备，所述第二设备接收第一消息，包括：
    所述第二设备通过所述第三设备接收来自所述第一设备的所述第一消息；
    所述第二设备发送所述第二消息，包括：
    所述第二设备通过所述第三设备向所述第一设备发送所述第二消息。
  8. 根据权利要求7所述的方法，其特征在于，所述第一设备为定位管理功能LMF网元，所述第三设备为接入和移动性管理功能AMF网元。
  9. 根据权利要求6或7所述的方法，其特征在于，所述第一消息包括所述第二设备的标识。
  10. 根据权利要求6或7所述的方法，其特征在于，所述第二消息包括更新后的所述第二设备对应的小区标识。
  11. 一种小区标识的更新方法，其特征在于，应用于包括第二设备和第三设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述第三设备接收第一消息，所述第一消息用于订阅所述第二设备对应的小区标识的更新事件；
    所述第三设备获知所述第二设备对应的小区标识发生改变时，所述第三设备发送第二消息，所述第二消息用于通知更新后的所述第二设备对应的小区标识。
  12. 根据权利要求11所述的方法，其特征在于，所述通信系统还包括第一设备，所述第三设备接收第一消息，包括：
    所述第三设备接收来自所述第一设备的所述第一消息；
    所述第三设备发送第二消息，包括：
    所述第三设备向所述第一设备发送所述第二消息。
  13. 根据权利要求11所述的方法，其特征在于，所述第一设备为接入和移动性管理功能AMF 网元，所述第三设备为接入网设备。
  14. 根据权利要求11或12所述的方法，其特征在于，所述第一消息包括所述第二设备的标识。
  15. 根据权利要求11或12所述的方法，其特征在于，所述第二消息包括更新后的所述第二设备对应的小区标识。
  16. 一种小区标识的更新方法，其特征在于，应用于包括接入网设备、第二设备、接入和移动性管理功能AMF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述接入网设备接收来自所述第二设备的第三消息，所述第三消息包括所述第二设备的标识；
    所述接入网设备向AMF网元发送第四消息，所述第四消息包括所述第二设备的标识以及所述第二设备对应的小区标识。
  17. 根据权利要求16所述的方法，其特征在于，所述第三消息包括F1建立请求(F1 step request)消息。
  18. 根据权利要求16或17所述的方法，其特征在于，所述方法还包括：
    所述接入网设备接收来自所述第二设备的第五消息，所述第五消息用于指示释放F1链接；
    所述接入网设备向所述AMF网元发送第六消息，所述第六消息用于指示所述AMF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
  19. 根据权利要求16至18中任一项所述的方法，其特征在于，所述接入网设备向所述AMF网元发送的第四消息或者第六消息包括NG配置更新(NG configuration update)消息。
  20. 一种小区标识的更新方法，其特征在于，应用于包括接入网设备和第二设备的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述第二设备向所述接入网设备发送第三消息，所述第三消息包括所述第二设备的标识。
  21. 根据权利要求20所述的方法，其特征在于，所述第三消息包括F1建立请求(F1 step request)消息。
  22. 根据权利要求20所述的方法，其特征在于，所述方法还包括：
    所述第二设备向所述接入网设备发送第五消息，所述第五消息用于指示释放F1链接。
  23. 一种小区标识的更新方法，其特征在于，应用于包括第二设备、接入和移动性管理功能AMF网元和网络存储功能NRF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述NRF网元接收来自所述AMF网元的第七消息，所述第七消息包括所述第二设备的标识以及所述第二设备对应的小区标识；
    所述NRF网元存储所述第二设备的标识以及所述第二设备对应的小区标识。
  24. 根据权利要求23所述的方法，其特征在于，所述方法还包括：
    所述NRF网元接收来自所述AMF网元的第八消息，所述第八消息用于指示所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识；
    所述NRF网元删除所述第二设备的标识以及所述第二设备对应的小区标识。
  25. 根据权利要求23或24所述的方法，其特征在于，所述NRF网元接收来自所述AMF网元的第七消息或者第八消息包括网元更新消息。
  26. 根据权利要求23所述的方法，其特征在于，所述通信系统还包括定位管理功能LMF网元，所述方法还包括：
    所述NRF网元接收来自所述LMF网元的查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；
    所述NRF网元向所述LMF网元发送查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
  27. 一种小区标识的更新方法，其特征在于，应用于包括第二设备、网络存储功能NRF网元和定位管理功能LMF网元的通信系统中，所述第二设备为移动接入回传一体化节点或者移动基站中继节点，所述方法包括：
    所述LMF网元接收来自终端设备的定位测量数据，所述终端设备是通过所述第二设备接入网络，所述定位测量数据包括所述第二设备对应的小区标识；
    所述LMF网元向所述NRF网元发送查询请求，所述查询请求用于查询与所述第二设备对应的小区标识关联的所述第二设备的标识；
    所述LMF网元接收来自所述NRF网元的查询响应，所述查询响应包括与所述第二设备对应的小区标识关联的所述第二设备的标识。
  28. 一种通信装置，其特征在于，包括用于执行如权利要求1至5中任一项，或者如权利要求6至10中任一项，或者如权利要求11至15中任一项，或者如权利要求16至19中任一项，或者如权利要求20至22中任一项，或者如权利要求23至26中任一项，或者如权利要求27所述的方法的模块或单元。
  29. 一种计算机可读介质，其特征在于，所述计算机可读介质存储用于计算机执行的程序代码，该程序代码包括用于执行如权利要求1至5中任一项，或者如权利要求6至10中任一项，或者如权利要求11至15中任一项，或者如权利要求16至19中任一项，或者如权利要求20至22中任一项，或者如权利要求23至26中任一项，或者如权利要求27所述的方法的指令。
  30. 一种计算机程序产品，所述计算机程序产品中包括计算机程序代码，其特征在于，当所述计算机程序代码在计算机上运行时，使得所述计算机实现如权利要求1至5中任一项，或者如权利要求6至10中任一项，或者如权利要求11至15中任一项，或者如权利要求16至19中任一项，或者如权利要求20至22中任一项，或者如权利要求23至26中任一项，或者如权利要求27所述的方法。
PCT/CN2023/119543 2022-09-29 2023-09-18 小区标识的更新方法与装置 WO2024067224A1 (zh)

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