WO2023134504A1 - 一种通信方法、lmf及发送单元 - Google Patents

一种通信方法、lmf及发送单元 Download PDF

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Publication number
WO2023134504A1
WO2023134504A1 PCT/CN2023/070187 CN2023070187W WO2023134504A1 WO 2023134504 A1 WO2023134504 A1 WO 2023134504A1 CN 2023070187 W CN2023070187 W CN 2023070187W WO 2023134504 A1 WO2023134504 A1 WO 2023134504A1
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Prior art keywords
base station
target
lmf
amf
target base
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PCT/CN2023/070187
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English (en)
French (fr)
Inventor
侯云静
陈东
梁冰苑
王胡成
艾明
徐晖
Original Assignee
大唐移动通信设备有限公司
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Publication of WO2023134504A1 publication Critical patent/WO2023134504A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • 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

Definitions

  • the present application relates to the technical field of wireless communication, and in particular to a communication method, an LMF and a sending unit.
  • the mobile communication network has entered the era of 5G technology.
  • the 5G positioning network architecture has higher precision and lower latency positioning requirements.
  • gNB NR NodeB, 5G base station
  • AMF Access Control And Mobility Management Function, mobility management function entity
  • LMF Location Management Function
  • the LMF can determine the AMF connected to the gNB according to the configuration information, and then send the assistance data to the gNB through the AMF.
  • the gNB when the gNB is deployed on a mobile object or itself is movable, the gNB will move with the movement of the mobile object or itself, and the AMF connected to the gNB and the LMF serving the gNB will also change, resulting in that the assistance data cannot be accessed. Accurately transmitted to gNB.
  • the embodiment of the present application provides a communication method, an LMF and a sending unit.
  • a base station When a base station is deployed on a mobile object, the correct LMF and AMF can be confirmed, so as to send the assistance data to the gNB.
  • the embodiment of the present application provides a communication method, which is applied to a location management function entity LMF, and the method includes:
  • the LMF can determine the target AMF corresponding to the target base station according to the identity of the target base station, and send a message to the target AMF Sending auxiliary data; or, after receiving the auxiliary data and the identification of the target base station sent by the sending unit, the LMF can send the auxiliary data and the identification of the target base station to each AMF corresponding to the LMF respectively.
  • the LMF receives the auxiliary data
  • the target AMF corresponding to the target base station can be determined according to the identification of the target base station, so as to send the assistance data to the target AMF, so that after receiving the assistance data, the target AMF sends the assistance data to the target base station .
  • the sending unit is an application function entity AF, a location service LCS client or a navigation center.
  • the determining the target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station includes:
  • the first request carries the identity of the target base station
  • the determining the target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station includes:
  • the AMF corresponding to the target base station is determined as the target AMF according to the routing reply returned by each AMF.
  • the LMF stores a mapping relationship between a base station and an AMF; and determining the target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station includes:
  • the method also includes:
  • the event notification is used to identify that any base station corresponds to an update of the AMF;
  • the mapping relationship between the base station and the corresponding AMF is updated.
  • the method also includes:
  • the event notification is used to identify that the base station corresponding to the AMF is updated;
  • the mapping relationship between the AMF and the corresponding base station is updated.
  • the target base station is a base station deployed on the mobile object.
  • the embodiment of the present application provides a communication method, which is applied to a sending unit, and the sending unit is an application function entity AF, a location service LCS client or a navigation center; the method includes:
  • the sending unit can send the auxiliary data and the identification of the target base station to the target LMF after determining the target LMF corresponding to the target base station; it can also send the auxiliary data to the preconfigured first LMF The assistance data and the identification of the target base station, so that the first LMF determines the target LMF, and sends the assistance data and the identification of the target base station to the target LMF.
  • the sending unit can send the assistance data and the identity of the target base station to the target LMF corresponding to the target base station, so that the target LMF can send the assistance data to the target base station through the target AMF after determining the target AMF corresponding to the target base station.
  • the determining the target location management function entity LMF corresponding to the target base station includes:
  • the target mobile object is the mobile object on which the target base station is deployed.
  • the embodiment of the present application provides a location management function entity LMF, including:
  • a receiving module configured to receive the auxiliary data sent by the sending unit and the identification of the target base station
  • a processing module configured to determine a target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station, and send the assistance data to the target AMF;
  • the AMF sends the assistance data and the identity of the target base station.
  • the embodiment of the present application provides a sending unit, the sending unit is an application function entity AF, a location service LCS client or a navigation center; the sending unit includes:
  • the data sending module determines the target location management function entity LMF corresponding to the target base station, and sends the auxiliary data and the identification of the target base station to the target LMF; or sends the auxiliary data and the identification of the target base station to the pre-configured first LMF , so that the first LMF determines a target LMF, and sends the assistance data and the identity of the target base station to the target LMF.
  • the embodiment of the present application provides a location management function entity LMF, including a memory, a transceiver, and a processor;
  • said memory for storing computer instructions
  • the transceiver is used to send and receive data under the control of the processor
  • the processor is configured to read computer instructions in the memory and perform the following steps:
  • the target base station determine the target mobility management function entity AMF corresponding to the target base station, and send the assistance data to the target AMF; or,
  • the sending unit is an application function entity AF, a location service LCS client or a navigation center.
  • the processor is specifically configured to:
  • the first request carries the identity of the target base station
  • the processor is specifically configured to:
  • the AMF corresponding to the target base station is determined as the target AMF according to the routing reply returned by each AMF.
  • the LMF stores the mapping relationship between the base station and the AMF; the processor may also be used for:
  • the processor may also be used for:
  • the event notification is used to identify that any base station corresponds to an update of the AMF;
  • the mapping relationship between the base station and the corresponding AMF is updated.
  • the processor may also be used for:
  • the event notification is used to identify that the base station corresponding to the AMF is updated;
  • the mapping relationship between the AMF and the corresponding base station is updated.
  • the target base station is a base station deployed on the mobile object.
  • the embodiment of the present application provides a sending unit, including a memory, a transceiver, and a processor;
  • said memory for storing computer instructions
  • the transceiver is used to send and receive data under the control of the processor
  • the processor is configured to read computer instructions in the memory and perform the following steps:
  • the processor is specifically configured to:
  • the target mobile object is the mobile object on which the target base station is deployed.
  • the embodiment of the present application provides a communication system, including a sending unit, at least one location management function entity LMF, at least one mobility management function entity AMF, and at least one base station; the sending unit adopts the method described in the sixth aspect.
  • the LMF adopts the LMF according to any one of the fifth aspect.
  • the embodiment of the present application provides a computer-readable storage medium, the storage medium stores computer instructions, and when the computer instructions are executed by a processor, the implementation as described in any one of the first aspect or the second aspect is implemented. Methods.
  • FIG. 1 is an application scenario diagram of a communication method applicable to an embodiment of the present application
  • FIG. 2 is a schematic diagram of an interactive flowchart of a communication method provided in an embodiment of the present application
  • FIG. 3 is a schematic diagram of an interactive flowchart for determining a target LMF provided in an embodiment of the present application
  • FIG. 4 is a schematic diagram of an interactive flowchart for determining a target AMF provided in an embodiment of the present application
  • FIG. 5 is a schematic diagram of an interactive flowchart of an NRF update mapping relationship provided by an embodiment of the present application
  • FIG. 6 is a schematic diagram of an interactive flowchart of another NRF update mapping relationship provided by the embodiment of the present application.
  • FIG. 7 is a schematic diagram of an interaction flow chart for determining a target AMF provided in an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 11 is a structural block diagram of an LMF entity provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of an LMF entity provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a sending unit provided by an embodiment of the present application.
  • first and “second” in the embodiments of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence.
  • “And/or” in the embodiment of this application describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations.
  • the character “/” generally indicates that the associated objects are an "or” relationship.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • the mobile communication network has entered the era of 5G technology. Compared with the 4G long-term evolution positioning network architecture, the 5G positioning network architecture has higher precision and lower latency positioning requirements.
  • gNB is static, and the connection between it and AMF is basically unchanged.
  • LMF sends assistance data to gNB
  • LMF can determine the AMF connected to gNB according to the configuration information, and then send the assistance data to gNB through the AMF.
  • the gNB will move with the movement of the mobile object, and the AMF connected to the gNB and the LMF serving the gNB will also change, resulting in that the assistance data cannot be accurately transmitted to the gNB.
  • an embodiment of the present application provides a communication method, an LMF, and a sending unit.
  • the LMF can determine the target AMF corresponding to the target base station according to the identity of the target base station. , and send assistance data to the target AMF; or, after receiving the assistance data sent by the sending unit and the identification of the target base station, the LMF can send the assistance data and the identification of the target base station to each AMF corresponding to the LMF respectively.
  • the target AMF corresponding to the target base station can be determined according to the identification of the target base station, so as to send the assistance data to the target AMF, so that after receiving the assistance data, the target AMF will send the assistance data to sent to the target base station.
  • FIG. 1 is a schematic structural diagram of a communication system applicable to an embodiment of the present application.
  • GMLC Global Mobile Location Center, gateway mobile location center
  • LCS Location services, location service
  • UE User Equipment, The location of the user terminal
  • UDM can be used to store UE information, such as subscription information, established PDU (Packet Data Unit, protocol data unit) session information, etc.
  • AMF can track the location of the UE.
  • the LMF can obtain the location of the UE; the RAN (Radio Access Network, radio access network) is the network corresponding to the target base station.
  • RAN Radio Access Network, radio access network
  • the distribution of auxiliary data and encryption key mainly involves LMF, UDM and AMF.
  • the LMF can formulate the encryption key and auxiliary data;
  • the UDM can store the types of auxiliary data subscribed by the UE.
  • the AMF can receive the auxiliary data and the encryption key issued by the LMF, wherein the auxiliary data can be broadcast through the RAN, and the AMF can send the key to the UE through the registration process. After the UE receives the key, it may use the key to decrypt the received broadcast assistance data.
  • Fig. 2 shows an interaction flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 2, the method includes the following steps:
  • Step S201 the sending unit sends the auxiliary data and the identity of the target base station to the target LMF;
  • the sending unit may first determine the corresponding location of the target base station according to the pre-configured service range of each LMF and the current location of the target mobile object.
  • Target LMF the target mobile object is the mobile object where the target base station is deployed; the sending unit is AF, LCS client or navigation center, and the target LMF corresponding to the target base station means that the target base station is within the service range of the target LMF, or the target base station is within the service range of the target base station
  • the LMF is connected to the service area of the AMF.
  • the mobile object includes, but is not limited to, a satellite.
  • the mobile object is described by taking a satellite as an example.
  • the service range of the LMF and the deployment of the base station on the satellite are configured.
  • the target base station can be determined according to the deployment of the base station on the satellite, and then the current position of the target satellite can be determined according to the ephemeris of the satellite, that is, the current position of the target base station.
  • the ephemeris refers to the movement of celestial bodies A table of precise positions or trajectories over time in a process.
  • the target LMF corresponding to the target base station can be determined, and the assistance data and the identity of the target base station are sent to the target LMF.
  • the sending unit may first send the assistance data and the identity of the target base station to a preconfigured first LMF, so that the first LMF can determine the target LMF, and send the assistance data and the identity of the target base station to the target LMF.
  • the sending unit that is, in the AF, LCS client or navigation center
  • the information of the first LMF and the deployment of the base station on the satellite are configured, and the AF, LCS client or navigation center
  • the target base station can be determined according to the deployment of the base station on the satellite, and then the first assistance data transmission request is sent to the first LMF, and the first assistance data transmission request can carry There are assistance data and the ID of the target base station, where the ID of the target base station is an optional identifier of the target base station.
  • the first LMF may send a first network function discovery request to the NRF, the first network function discovery request carries the ID of the target base station, and the NRF receives the target base station ID After the ID, the ID of the target AMF corresponding to the target base station can be found according to the ID of the target base station carried in the first network function discovery request, and the first network function discovery reply is sent to the first LMF, and the first network function discovery reply carries the ID of the target AMF corresponding to the target base station.
  • the first LMF After receiving the network function discovery reply sent by the NRF, the first LMF can judge whether there is a connection relationship with the target AMF according to the ID of the target AMF carried in the network function discovery reply.
  • the second network function discovery request carries the ID of the target AMF in the second network function discovery request.
  • the NRF After receiving the second network function discovery request, the NRF can search for the target AMF according to the ID of the target AMF carried in the second network function discovery request. Get the ID of the target LMF that has a connection relationship with the target AMF, and send a second network function discovery reply to the first LMF, where the second network function discovery reply carries the ID of the target LMF that has a connection relationship with the target AMF.
  • the first LMF may send a second auxiliary data transmission request to the target LMF according to the ID of the target LMF carried in the second network function discovery reply, and the second auxiliary data transmission request carries the assistance data and the ID of the target base station.
  • the target LMF can return the assistance data transmission reply to the first LMF.
  • the auxiliary data can be sent back to AF, LCS client or navigation center.
  • Step S202 the target LMF sends auxiliary data to the target AMF.
  • the target LMF can determine the target AMF corresponding to the target base station according to the identity of the target base station, and send the assistance data to the target AMF , wherein the target AMF corresponding to the target base station refers to a target AMF that has a connection relationship or is directly connected to the target base station.
  • the target LMF may send a network function discovery request to the NRF, wherein the network function discovery request is an optional first request; the network function discovery request carries There is the ID of the target base station; the mapping relationship between the base station and the AMF can be stored in the NRF; the NRF can find the ID of the target AMF according to the ID of the target base station, and send a network function discovery reply to the target LMF, and the network function discovery reply contains the target AMF information.
  • the stored mapping relationship between the base station and the AMF may be updated in the following two ways:
  • Method 1 With the movement of the satellite where the base station is located, the base station enters the coverage of the new AMF, the base station will disconnect from the old AMF, and establish a connection with the new AMF. After the connection is established, as shown in Figure 5, the new AMF The AMF can send a network function update request to the NRF, and the network function update request carries the ID of the base station.
  • the NRF After receiving the network function update request, the NRF can store the mapping relationship between the new AMF and the base station, and delete the old mapping relationship between the AMF and the base station; or, after receiving the network function update request, the NRF can store the The ID of the base station is deleted from the mapping relationship corresponding to the old AMF, and the ID of the base station is added to the mapping relationship corresponding to the new AMF. After updating the mapping relationship, the NRF may return a network function update confirmation to the new AMF.
  • Method 2 With the movement of the satellite where the base station is located, the base station enters the coverage of the new AMF. The base station will disconnect from the old AMF and establish a connection with the new AMF. After the connection is established, as shown in Figure 6, the base station A network function update request can be sent to the NRF, and the network function update request carries the ID of the new AMF, wherein, in the base station, the service interface can be supported or the address of the NRF can be configured, so that the base station and the NRF can communicate directly .
  • the NRF After receiving the network function update request, the NRF can store the mapping relationship between the base station and the new AMF, and delete the mapping relationship between the old AMF and the base station; or, after receiving the network function update request, the NRF can store the The ID of the old AMF is removed from the mapping relationship, and the ID of the new AMF is added to the mapping relationship. After updating the mapping relationship, the NRF may return a network function update confirmation to the new AMF.
  • the target LMF may send a routing request to each AMF corresponding to the target LMF, and the routing request may carry the ID of the target base station, and after each AMF receives the routing request, Whether it has a connection relationship with the target base station can be determined according to the ID of the target base station; after the determination is completed, each AMF can return a routing reply to the target LMF, and the routing reply can be used to indicate whether the corresponding AMF has a connection relationship with the target base station; the target LMF The AMF that has a connection relationship with the target base station may be determined as the target AMF according to the routing reply returned by each AMF.
  • any AMF that has a connection relationship with the target base station can be determined as the target AMF .
  • the target LMF can send assistance data to the target AMF.
  • the target LMF may send the assistance data and the identity of the target base station to each AMF corresponding to the target LMF, wherein the target The identifier of the base station may be the ID of the target base station, where each AMF corresponding to the target LMF refers to each AMF that has a connection relationship or is directly connected to the target LMF.
  • each AMF after each AMF receives the assistance data sent by the target LMF and the ID of the target base station, it can judge whether it has a connection relationship with the target base station based on the ID of the target base station. If there is no connection relationship, then Ignore this information; if there is a connection relationship, send the assistance data to the target base station.
  • each AMF after each AMF receives the assistance data sent by the target LMF and the ID of the target base station, it can judge whether it has a connection relationship with the target base station based on the ID of the target base station. If there is no connection relationship, ignore the information; if there is a connection relationship, while sending the assistance data to the target base station, reception success information may be sent to the target LMF, and the reception success information is used to indicate that the target AMF has received the assistance data.
  • each AMF after each AMF receives the assistance data sent by the target LMF and the ID of the target base station, it can judge whether it has a connection relationship with the target base station based on the ID of the target base station.
  • the target LMF sends reception failure information; if there is a connection relationship, then sends the assistance data to the target base station, and at the same time sends reception success information to the target LMF.
  • the mapping relationship between the base station and the AMF may be stored in the LMF.
  • the target LMF may, according to the identity of the target base station, Find the target AMF corresponding to the target base station in the mapping relationship stored locally; if there is a target AMF corresponding to the target base station in the mapping relationship stored by the target LMF, then the target LMF sends auxiliary data to the target AMF; if the mapping relationship stored by the target LMF does not If there is a target AMF corresponding to the target base station, the target LMF may determine the target AMF corresponding to the target base station through the above method, and send assistance data to the target AMF.
  • the target AMF after receiving the assistance data sent by the target LMF, the target AMF can send the assistance data to the corresponding target base station, so that the target base station sends the assistance data to the UE.
  • the mapping relationship between the base station and the AMF may be stored in the LMF, and the LMF may determine the ID of the AMF corresponding to the target base station according to the locally stored mapping relationship, so as to reduce the transmission delay of the auxiliary data ;
  • the NRF can send an event notification to the LMF corresponding to the AMF, and the event notification is used to identify that the AMF corresponding to any base station is updated; and the event notification carries AMF The identity of the corresponding updated base station; after receiving the event notification sent by the NRF, the LMF can update the mapping relationship between the base station and the corresponding AMF according to the event notification, where the AMF corresponding to the base station refers to the An AMF that connects a relationship or a direct connection.
  • the mapping relationship between the base station and the AMF may be stored in the LMF; for any AMF, after the mapping relationship between the AMF and the base station is updated, the AMF may send the corresponding LMF to the AMF Send an event notification, the event notification is used to identify the update of the base station corresponding to the AMF; and the event notification carries the identity of the updated base station corresponding to the AMF; after receiving the event notification sent by the NRF, the LMF can The notification updates the mapping relationship between the base station and the corresponding AMF.
  • the embodiments provided in this application provide a flowchart of a communication method.
  • the method is performed by the location management functional entity LMF, as shown in Figure 8, the method includes the following steps:
  • Step S801 receiving the auxiliary data and the identification of the target base station sent by the sending unit.
  • Step S802 Determine the target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station, and send assistance data to the target AMF.
  • Step S901 receiving the auxiliary data and the identification of the target base station sent by the sending unit.
  • Step S902 sending the assistance data and the identity of the target base station to each AMF corresponding to the LMF.
  • the embodiments provided in this application provide a flowchart of a communication method.
  • the method is executed by a sending unit, and the sending unit is an application function entity AF, a location service LCS client or a navigation center; as shown in FIG. 10 , the method includes the following steps:
  • Step S1001 determine the target location management function entity LMF corresponding to the target base station.
  • Step S1002 sending the assistance data and the identity of the target base station to the target LMF.
  • the embodiments provided in this application provide a flowchart of a communication method.
  • the method is executed by a sending unit, and includes: sending the auxiliary data and the identity of the target base station to a preconfigured first LMF, so that the first LMF determines the target LMF, and sending the auxiliary data and the identity of the target base station to the target LMF.
  • a location management function entity LMF is provided, as shown in FIG. 11 , including a receiving module 1101 and a processing module 1102; wherein:
  • the receiving module 1101 is configured to receive the assistance data and the identification of the target base station sent by the sending unit.
  • the processing module 1102 is configured to determine the target mobility management function entity AMF corresponding to the target base station according to the identifier of the target base station, and send the assistance data to the target AMF; Each AMF sends the assistance data and the identity of the target base station.
  • the sending unit is an application function entity AF, a location service LCS client or a navigation center.
  • processing module 1102 may specifically be used for:
  • the first request carries the identity of the target base station
  • processing module 1102 may specifically be used for:
  • the AMF corresponding to the target base station is determined as the target AMF according to the routing reply returned by each AMF.
  • the LMF stores the mapping relationship between the base station and the AMF; the processing module 1102 may also be used for:
  • an update module may also be included, and the update module is specifically used for:
  • the event notification is used to identify that any base station corresponds to an update of the AMF;
  • the mapping relationship between the base station and the corresponding AMF is updated.
  • the update module can also be used for:
  • the event notification is used to identify that the base station corresponding to the AMF is updated;
  • the mapping relationship between the AMF and the corresponding base station is updated.
  • the target base station is a base station deployed on the mobile object.
  • a sending unit includes a data sending module, wherein the data sending module is specifically used for:
  • the first LMF determines a target LMF, and sends the assistance data and the identity of the target base station to the target LMF.
  • the data sending module may specifically be used for:
  • the target mobile object is the mobile object on which the target base station is deployed.
  • the embodiment of the present application also provides a location management function entity LMF.
  • the LMF can implement any one of the communication methods implemented in the foregoing embodiments.
  • FIG. 12 shows a schematic structural diagram of the LMF provided by the embodiment of the present application, that is, another schematic structural diagram of the LMF is shown.
  • the LMF includes a processor 1201 , a memory 1202 and a transceiver 1203 .
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1201 when performing operations.
  • the transceiver 1203 is used to receive and transmit data under the control of the processor 1201 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1202 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 can store data used by the processor 1201 when performing operations.
  • the processes disclosed in the embodiments of the present application may be applied to the processor 1201 or implemented by the processor 1201 .
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 1201 or instructions in the form of software.
  • the processor 1201 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may realize or execute the The disclosed methods, steps and logical block diagrams.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202, and completes the steps of the signal processing process in combination with its hardware.
  • the processor 1201 is configured to read the computer instructions in the memory 1202, and when the processor 1201 executes the computer instructions, realize:
  • the sending unit is an application function entity AF, a location service LCS client or a navigation center.
  • the processor 1201 is specifically configured to:
  • the first request carries the identity of the target base station
  • the processor 1201 is specifically configured to:
  • the AMF corresponding to the target base station is determined as the target AMF according to the routing reply returned by each AMF.
  • the LMF stores the mapping relationship between the base station and the AMF; the processor 1201 is specifically configured to:
  • processor 1201 may also be configured to:
  • the event notification is used to identify that any base station corresponds to an update of the AMF;
  • the mapping relationship between the base station and the corresponding AMF is updated.
  • processor 1201 may also be configured to:
  • the event notification is used to identify that the base station corresponding to the AMF is updated;
  • the mapping relationship between the AMF and the corresponding base station is updated.
  • the target base station is a base station deployed on the mobile object.
  • the embodiment of the present application also provides a sending unit.
  • the sending unit can execute any communication method implemented in the foregoing embodiments.
  • FIG. 13 shows a schematic structural diagram of the sending unit provided by the embodiment of the present application, that is, shows another schematic structural diagram of the sending unit.
  • the sending unit includes a processor 1301 , a memory 1302 and a transceiver 1303 .
  • the processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 can store data used by the processor 1301 when performing operations.
  • the transceiver 1303 is used to receive and transmit data under the control of the processor 1301 .
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1301 and various circuits of the memory represented by the memory 1302 are linked together.
  • the bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • the processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 can store data used by the processor 1301 when performing operations.
  • the processes disclosed in the embodiments of the present application may be applied to the processor 1301 or implemented by the processor 1301 .
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 1301 or instructions in the form of software.
  • the processor 1301 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may realize or execute the The disclosed methods, steps and logical block diagrams.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 1302, and the processor 1301 reads the information in the memory 1302, and completes the steps of the signal processing process in combination with its hardware.
  • the processor 1301 is configured to read the computer program in the memory 1302, and when the processor 1301 executes the computer program, realize:
  • processor 1301 is specifically configured to:
  • the target mobile object is the mobile object on which the target base station is deployed.
  • an embodiment of the present application also provides a communication system, including a sending unit, at least one location management function entity LMF, at least one mobility management function entity AMF, and at least one base station; wherein, the sending unit, as shown in the figure
  • the LCS client shown in 1 is an optional sending unit, which is used to adopt the sending unit described in any one of the above, and the LMF adopts the LMF described in any one of the above.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

本申请提供了一种通信方法、LMF及发送单元，涉及无线通信技术领域。LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以根据目标基站的标识，确定目标基站对应的目标AMF，并向目标AMF发送辅助数据；或者，LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以分别向LMF对应的各个AMF发送辅助数据和目标基站的标识，通过该方法，LMF在接收到辅助数据和目标基站的标识后，可以根据目标基站的标识确定与目标基站对应的目标AMF，从而将辅助数据发送至目标AMF，以使目标AMF在接受到该辅助数据后，将辅助数据发送至目标基站。

Description

一种通信方法、LMF及发送单元
相关申请的交叉引用
本申请要求在2022年01月14日提交中国专利局、申请号为202210042532.6、申请名称为“一种通信方法、LMF及发送单元”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
本申请涉及无线通信技术领域，特别涉及一种通信方法、LMF及发送单元。
背景技术
移动通讯网络已进入5G技术时代，相对于4G长期演进(Long Term Evolution，LTE)定位网络架构，5G定位网络架构具有更高精度和更低时延的定位需求。
目前，gNB(NR NodeB，5G基站)是静止的，其与AMF(AccessControl And Mobility Management Function，移动性管理功能实体)之间的连接基本不变，当LMF(Location Management Function，定位管理功能实体)向gNB发送辅助数据时，LMF可以根据配置信息决定与gNB连接的AMF，然后经过该AMF将辅助数据发送至gNB。
但是，当gNB部署于移动对象上或自身可移动时，gNB会随着移动对象的移动或自身的移动而移动，与gNB连接的AMF和服务gNB的LMF也会发生变化，导致辅助数据无法被准确传输至gNB。
发明内容
本申请实施例提供一种通信方法、LMF及发送单元，当基站部署在移动对象上时，可以确认到正确的LMF和AMF，从而将辅助数据发送至gNB。
第一方面，本申请实施例提供一种通信方法，应用于定位管理功能实体LMF，所述方法包括：
接收发送单元发送的辅助数据和目标基站的标识；
根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，
分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
本申请实施例提供的通信方法、LMF及发送单元，LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以根据目标基站的标识，确定目标基站对应的目标AMF，并向目标AMF发送辅助数据；或者，LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以分别向LMF对应的各个AMF发送辅助数据和目标基站的标识，通过该方法，LMF在接受到辅助数据和目标基站的标识后，可以根据目标基站的标识确定与目标基站对应的目标AMF，从而将辅助数据发送至目标AMF，以使目标AMF在接受到该辅助数据后，将辅助数据发送至目标基站。
在一种可选的实施例中，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
在一种可选的实施例中，所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
在一种可选的实施例中，所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带有所述目标基站的标识；
分别接收所述各个AMF返回的路由回复；
根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
在一种可选的实施例中，所述LMF中存储有基站和AMF的映射关系；所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
在一种可选的实施例中，所述方法还包括：
接收NRF发送的事件通知；所述事件通知用于标识任一基站对应的AMF发生更新；
根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
在一种可选的实施例中，所述方法还包括：
针对任一AMF，接收所述AMF发送的事件通知；所述事件通知用于标识所述AMF对应的基站发生更新；
根据所述事件通知，对所述AMF及对应的基站的映射关系进行更新。
在一种可选的实施例中，所述目标基站为部署在移动对象上的基站。
第二方面，本申请实施例提供一种通信方法，应用于发送单元，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心；所述方法包括：
确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，
向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
本申请实施例提供的通信方法、LMF及发送单元，发送单元可以在确定出目标基站对应的目标LMF后，向目标LMF发送辅助数据和目标基站的标识；也可以向预先配置的第一LMF发送辅助数据和目标基站的标识，以使第 一LMF确定目标LMF，并向所述目标LMF发送辅助数据和目标基站的标识。通过该方法，发送单元可以将辅助数据和目标基站的标识发送至与目标基站对应的目标LMF，以使目标LMF在确定与目标基站对应的目标AMF，经过目标AMF将辅助数据发送至目标基站。
在一种可选的实施例中，所述确定目标基站对应的目标定位管理功能实体LMF，包括：
根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
第三方面，本申请实施例提供一种定位管理功能实体LMF，包括：
接收模块，用于接收发送单元发送的辅助数据和目标基站的标识；
处理模块，用于根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
第四方面，本申请实施例提供一种发送单元，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心；所述发送单元包括：
数据发送模块，确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
第五方面，本申请实施例提供一种定位管理功能实体LMF，包括存储器，收发机，处理器；
所述存储器，用于存储计算机指令；
所述收发机，用于在所述处理器的控制下收发数据；
所述处理器，用于读取所述存储器中的计算机指令并执行如下步骤：
接收发送单元发送的辅助数据和目标基站的标识；
根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功 能实体AMF，并向所述目标AMF发送所述辅助数据；或者，
分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
在一种可选的实施例中，所述处理器，具体用于：
向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
在一种可选的实施例中，所述处理器，具体用于：
分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带有所述目标基站的标识；
分别接收所述各个AMF返回的路由回复；
根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
在一种可选的实施例中，所述LMF中存储有基站和AMF的映射关系；所述处理器，还可以用于：
根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
在一种可选的实施例中，所述处理器，还可以用于：
接收NRF发送的事件通知；所述事件通知用于标识任一基站对应的AMF发生更新；
根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
在一种可选的实施例中，所述处理器，还可以用于：
针对任一AMF，接收所述AMF发送的事件通知；所述事件通知用于标识所述AMF对应的基站发生更新；
根据所述事件通知，对所述AMF及对应的基站的映射关系进行更新。
在一种可选的实施例中，所述目标基站为部署在移动对象上的基站。
第六方面，本申请实施例提供一种发送单元，包括存储器，收发机，处理器；
所述存储器，用于存储计算机指令；
所述收发机，用于在所述处理器的控制下收发数据；
所述处理器，用于读取所述存储器中的计算机指令并执行如下步骤：
确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，
向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述处理器，具体用于：
根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
第七方面，本申请实施例提供一种通信系统，包括发送单元、至少一个定位管理功能实体LMF、至少一个移动性管理功能实体AMF和至少一个基站；所述发送单元采用如第六方面中的任一项所述的发送单元，所述LMF采用如第五方面中任一项所述的LMF。
第八方面，本申请实施例提供一种计算机可读存储介质，所述存储介质存储有计算机指令，所述计算机指令被处理器执行时实现如第一方面或第二方面中任一项所述的方法。
第三方面至第八方面中任意一种实现方式所带来的技术效果可参见第一方面或第二方面中对应的实现方式所带来的技术效果，此处不再赘述。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案，下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例适用的通信方法的应用场景图；
图2为本申请实施例提供的一种通信方法的交互流程图示意图；
图3为本申请实施例提供的一种确定目标LMF的交互流程图示意图；
图4为本申请实施例提供的一种确定目标AMF的交互流程图示意图；
图5为本申请实施例提供的一种NRF更新映射关系的交互流程图示意图；
图6为本申请实施例提供的另一种NRF更新映射关系的交互流程图示意图；
图7为本申请实施例提供的一种确定目标AMF的交互流程图示意图；
图8为本申请实施例提供的一种通信方法的流程示意图；
图9为本申请实施例提供的另一种通信方法的流程示意图；
图10为本申请实施例提供的另一种通信方法的流程示意图；
图11为本申请实施例提供的一种LMF实体的结构框图；
图12为本申请实施例提供的一种LMF实体的结构示意图；
图13为本申请实施例提供的一种发送单元的结构示意图。
具体实施方式
下面结合附图对本申请的具体实施方式进行详细的说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。
需要说明的是，本申请实施例中的“第一”、“第二”用于区别类似的对象，而不是用于描述特定的顺序或先后次序。本申请实施例中的“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般 表示前后关联对象是一种“或”的关系。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
移动通讯网络已进入5G技术时代，相对于4G长期演进定位网络架构，5G定位网络架构具有更高精度和更低时延的定位需求。目前，gNB是静止的，其与AMF之间的连接基本不变，当LMF向gNB发送辅助数据时，LMF可以根据配置信息决定与gNB连接的AMF，然后经过该AMF将辅助数据发送至gNB。但是，当gNB部署于移动对象上时，gNB会随着移动对象的移动而移动，与gNB连接的AMF和服务gNB的LMF也会发生变化，导致辅助数据无法被准确传输至gNB。
基于此，本申请实施例提供了一种通信方法、LMF及发送单元，LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以根据目标基站的标识，确定目标基站对应的目标AMF，并向目标AMF发送辅助数据；或者，LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以分别向LMF对应的各个AMF发送辅助数据和目标基站的标识，通过该方法，LMF在接受到辅助数据和目标基站的标识，可以根据目标基站的标识确定与目标基站对应的目标AMF，从而将辅助数据发送至目标AMF，以使目标AMF在接受到该辅助数据后，将辅助数据发送至目标基站。
图1为本申请实施例适用的一种通信系统的结构示意图。如图1所示，GMLC(Gateway Mobile Location Center，网关移动位置中心)可以用于接收LCS(Location services，位置服务)客户端的定位请求，触发定位过程，并向LCS客户端返回UE(User Equipment，用户终端)的位置；UDM可以用于存储UE的信息，例如签约信息，已建立的PDU(Packet Data Unit，协议数据单元)会话的信息等；AMF可以跟踪UE的位置。LMF可以获取到UE的位置；RAN(Radio Access Network，无线接入网)是与目标基站对应的网络。
在本申请实施例提供的通信系统中，辅助数据和加密密钥的下发主要涉及LMF，UDM和AMF。其中，LMF可以制定加密密钥和辅助数据；UDM可以存储UE签约的辅助数据类型。具体地，AMF可以接收LMF下发的辅助数据和加密密钥，其中辅助数据可以通过RAN广播出去，AMF通过注册过程可以将密钥发送给UE。当UE接收到密钥之后，可使用密钥对接收到的广播的辅助数据进行解密。
图2示出了本申请实施例提供的一种通信方法的交互流程图。如图2所示，该方法包括以下步骤：
步骤S201，发送单元向目标LMF发送辅助数据和目标基站的标识；
在一种可选的实施方式中，发送单元在向目标LMF发送辅助数据和目标基站的标识之前，可以先根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定目标基站对应的目标LMF。其中，目标移动对象为部署目标基站的移动对象；发送单元为AF、LCS客户端或导航中心，目标基站对应的目标LMF是指目标基站在目标LMF的服务范围内，或者，目标基站在与目标LMF连接的AMF的服务范围之内。
在本申请实施例中，移动对象包括但不限于卫星，在下述实施例中，移动对象以卫星为例进行说明。
具体地，在发送单元中，即AF、LCS客户端或导航中心中，配置有LMF的服务范围和基站在卫星上的部署情况，AF、LCS客户端或导航中心在向目标LMF发送目标卫星生成的辅助数据时，可以根据基站在卫星上的部署情况，确定出目标基站，然后根据卫星的星历，确定出目标卫星的当前位置，即目标基站的当前位置，其中，星历是指天体运行过程中随时间而变的精确位置或轨迹表。根据目标基站的当前位置和预先配置的各个LMF的服务范围，可以确定出目标基站对应的目标LMF，并将辅助数据和目标基站的标识发送至目标LMF。
在一种可选的实施方式中，发送单元在向目标LMF发送辅助数据和目标基站的标识之前，可以先向预先配置的第一LMF发送辅助数据和目标基站的 标识，以使第一LMF确定目标LMF，并向目标LMF发送辅助数据和目标基站的标识。
具体地，如图3所示，在发送单元中，即在AF、LCS客户端或导航中心中，配置有第一LMF的信息和基站在卫星上的部署情况，AF、LCS客户端或导航中心在向目标LMF发送目标卫星生成的辅助数据时，可以根据基站在卫星上的部署情况，确定出目标基站，然后向第一LMF发送第一辅助数据发送请求，第一辅助数据发送请求中可以携带有辅助数据和目标基站的ID，其中，目标基站的ID为一种可选的目标基站的标识。第一LMF在接收到发送单元发送的第一辅助数据发送请求后，可以向NRF发送第一网络功能发现请求，第一网络功能发现请求中携带有目标基站的ID，NRF在接收到目标基站的ID后，可以根据第一网络功能发现请求中携带的目标基站的ID，查找出与目标基站对应的目标AMF的ID，并向第一LMF发送第一网络功能发现回复，第一网络功能发现回复中携带有目标基站对应的目标AMF的ID。
第一LMF在接收到NRF发送的网络功能发现回复后，可以根据网络功能发现回复中携带的目标AMF的ID，判断与该目标AMF之间是否具有连接关系，若没有连接关系，则向NRF发送第二网络功能发现请求，第二网络功能发现请求中携带有目标AMF的ID，NRF在接收到第二网络功能发现请求后，可以根据第二网络功能发现请求中携带的目标AMF的ID，查找出与目标AMF具有连接关系的目标LMF的ID，并向第一LMF发送第二网络功能发现回复，第二网络功能发现回复中携带有与目标AMF具有连接关系的目标LMF的ID。
第一LMF在接收到NRF发送的第二网络功能发现回复后，可以根据第二网络功能发现回复中携带的目标LMF的ID，向目标LMF发送第二辅助数据发送请求，第二辅助数据发送请求中携带有辅助数据和目标基站的ID，目标LMF在接受到第一LMF发送的第二辅助数据发送请求后，可以向第一LMF返回辅助数据发送回复，第一LMF在接受到该辅助数据发送回复后，可以将该辅助数据发送回复发送至AF、LCS客户端或导航中心。
步骤S202，目标LMF向目标AMF发送辅助数据。
在一种可选的实施方式中，目标LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以根据目标基站的标识，确定目标基站对应的目标AMF，并向目标AMF发送辅助数据，其中，目标基站对应的目标AMF是指，与目标基站具有连接关系或直接连接的目标AMF。
具体地，在一种实施例中，如图4所示，目标LMF可以向NRF发送网络功能发现请求，其中，网络功能发现请求为一种可选的第一请求；该网络功能发现请求中携带有目标基站的ID；NRF中可以存储有基站与AMF的映射关系；NRF可以根据目标基站的ID对应找到目标AMF的ID，并向目标LMF发送网络功能发现回复，网络功能发现回复中携带有目标AMF的信息。
在一种实施例中，在NRF中，可以通过下列两种方式对存储的基站与AMF的映射关系进行更新：
方式一：随着基站所在卫星的移动，导致基站进入新的AMF的覆盖范围，基站将与旧的AMF断开连接，并与新的AMF建立连接，建立连接后，如图5所示，新的AMF可以向NRF发送网络功能更新请求，该网络功能更新请求中携带有基站的ID。NRF在接受到该网络功能更新请求后，可以对新的AMF和基站的映射关系进行存储，并删除旧的AMF和基站的映射关系；或者，NRF在接受到该网络功能更新请求后，可以将基站的ID从旧的AMF对应的映射关系中删除，并将基站的ID添加到新的AMF对应的映射关系中。NRF在更新完映射关系后，可以向新的AMF返回网络功能更新确认。
方式二：随着基站所在卫星的移动，导致基站进入新的AMF的覆盖范围，基站将与旧的AMF断开连接，并与新的AMF建立连接，建立连接后，如图6所示，基站可以向NRF发送网络功能更新请求，该网络功能更新请求中携带有新的AMF的ID，其中，在基站中，可以支持服务化接口或配置有NRF的地址，以使基站和NRF可以进行直接通信。NRF在接受到该网络功能更新请求后，可以对基站和新的AMF的映射关系进行存储，并删除旧的AMF和基站的映射关系；或者，NRF在接受到该网络功能更新请求后，可以将旧的 AMF的ID从映射关系中删除，并将新的AMF的ID添加到映射关系中。NRF在更新完映射关系后，可以向新的AMF返回网络功能更新确认。
在另一种实施例中，如图7所示，目标LMF可以分别向与目标LMF对应的各个AMF均发送路由请求，路由请求中可以携带目标基站的ID，各个AMF在接收到路由请求后，可以根据目标基站的ID确定是否与目标基站具有连接关系；各个AMF在确定完成后，可以向目标LMF返回路由回复，该路由回复可以用于指示对应的AMF是否与目标基站具有连接关系；目标LMF可以根据各个AMF返回的路由回复，将与目标基站具有连接关系的AMF确定为目标AMF。
在另一种实施例中，若目标LMF根据各个AMF返回的路由回复，确定出与目标基站具有连接关系的AMF有多个时，可以将任意一个与目标基站具有连接关系的AMF确定为目标AMF。
通过上述方法，确定出目标AMF后，目标LMF可以向目标AMF发送辅助数据。
在另一种可选的实施方式中，目标LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以分别向目标LMF对应的各个AMF发送辅助数据和目标基站的标识，其中，目标基站的标识可以是目标基站的ID，其中，目标LMF对应的各个AMF是指，与目标LMF具有连接关系或直接连接的各个AMF。
具体地，在一种实施例中，各个AMF在接收到目标LMF发送的辅助数据和目标基站的ID后，可以基于目标基站的ID，判断是否与目标基站具有连接关系，若没有连接关系，则忽略该信息；若具有连接关系，则将辅助数据发送至目标基站。
在另一种实施例中，各个AMF在接收到目标LMF发送的辅助数据和目标基站的ID后，可以基于目标基站的ID，判断是否与目标基站具有连接关系，若没有连接关系，则忽略该信息；若具有连接关系，则将辅助数据发送至目标基站的同时，可以向目标LMF发送接收成功信息，该接收成功信息用于表 示目标AMF接收到了辅助数据。
在另一种实施例中，各个AMF在接收到目标LMF发送的辅助数据和目标基站的ID后，可以基于目标基站的ID，判断是否与目标基站具有连接关系，若没有连接关系，则可以向目标LMF发送接收失败信息；若具有连接关系，则将辅助数据发送至目标基站，同时向目标LMF发送接收成功信息。
在另一种可选的实施方式中，LMF中可以存储有基站和AMF之间的映射关系，目标LMF在接收到发送单元发送的辅助数据和目标基站的标识后，可以根据目标基站的标识，在本地存储的映射关系中查找目标基站对应的目标AMF；若目标LMF存储的映射关系中存在目标基站对应的目标AMF，则目标LMF向目标AMF发送辅助数据；若目标LMF存储的映射关系中不存在目标基站对应的目标AMF，则目标LMF可以通过上述方法确定目标基站对应的目标AMF，并向目标AMF发送辅助数据。
通过上述方法，目标AMF在接收到目标LMF发送的辅助数据后，可以将辅助数据发送至对应的目标基站，以使目标基站将辅助数据发送至UE。
在一种可选的实施方式中，LMF中可以存储有基站和AMF之间的映射关系，LMF可根据本地存储的映射关系确定与目标基站对应的AMF的ID，以降低辅助数据的传输时延；当NRF存储的基站与AMF的映射关系发生更新后，NRF可以向与AMF对应的LMF发送事件通知，该事件通知用于标识任一基站对应的AMF发生更新；且该事件通知中携带有AMF对应的更新后的基站的标识；LMF在接受到NRF发送的事件通知后，可以根据该事件通知，对基站及对应的AMF的映射关系进行更新，其中，基站对应的AMF是指，与基站具有连接关系或直接连接的AMF。
在另一种可选的实施方式中，LMF中可以存储有基站和AMF之间的映射关系；针对任一AMF，当该AMF与基站的映射关系发生更新后，AMF可以向与AMF对应的LMF发送事件通知，该事件通知用于标识该AMF对应的基站发生更新；且该事件通知中携带有AMF对应的更新后的基站的标识；LMF在接受到NRF发送的事件通知后，可以根据该事件通知，对基站及对应 的AMF的映射关系进行更新。
基于同一发明构思，本申请提供的实施例中，提供了一种通信方法的流程图。该方法由定位管理功能实体LMF执行，如图8所示，该方法包括以下步骤：
步骤S801，接收发送单元发送的辅助数据和目标基站的标识。
步骤S802，根据目标基站的标识，确定目标基站对应的目标移动性管理功能实体AMF，并向目标AMF发送辅助数据。
基于同一发明构思，本申请提供的实施例中，提供了另一种通信方法的流程图。该方法由定位管理功能实体LMF执行，如图9所示，该方法包括以下步骤：
步骤S901，接收发送单元发送的辅助数据和目标基站的标识。
步骤S902，分别向LMF对应的各个AMF发送辅助数据和目标基站的标识。
基于同一发明构思，本申请提供的实施例中，提供了一种通信方法的流程图。该方法由发送单元执行，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心；如图10所示，该方法包括以下步骤：
步骤S1001，确定目标基站对应的目标定位管理功能实体LMF。
步骤S1002，向目标LMF发送辅助数据和目标基站的标识。
基于同一发明构思，本申请提供的实施例中，提供了一种通信方法的流程图。该方法由发送单元执行，该方法包括：向预先配置的第一LMF发送辅助数据和目标基站的标识，以使第一LMF确定目标LMF，并向目标LMF发送辅助数据和目标基站的标识。
基于同一发明构思，本申请提供的实施例中，提供了一种定位管理功能实体LMF，如图11所示，包括接收模块1101和处理模块1102；其中：
接收模块1101，接收发送单元发送的辅助数据和目标基站的标识。
处理模块1102，用于根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据； 或者，分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
在一种可选的实施例中，所述处理模块1102，具体可以用于：
向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
在一种可选的实施例中，所述处理模块1102，具体可以用于：
分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带有所述目标基站的标识；
分别接收所述各个AMF返回的路由回复；
根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
在一种可选的实施例中，所述LMF中存储有基站和AMF的映射关系；所述处理模块1102，还可以用于：
根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
在一种可选的实施例中，还可以包括更新模块，所述更新模块，具体用于：
接收NRF发送的事件通知；所述事件通知用于标识任一基站对应的AMF发生更新；
根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
在一种可选的实施例中，所述更新模块，还可以用于：
针对任一AMF，接收所述AMF发送的事件通知；所述事件通知用于标识所述AMF对应的基站发生更新；
根据所述事件通知，对所述AMF及对应的基站的映射关系进行更新。
在一种可选的实施例中，所述目标基站为部署在移动对象上的基站。
基于同一发明构思，本申请提供的实施例中，提供了一种发送单元，该发送单元包括数据发送模块，其中，所述数据发送模块具体用于：
确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述数据发送模块，具体可以用于：
根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
基于相同的技术构思，本申请实施例还提供了一种定位管理功能实体LMF。该LMF能够执行上述实施例中实现的任一项通信方法。
图12示出了本申请实施例提供的该LMF的结构示意图，即示出了LMF的另一结构示意图。如图12所示，该LMF包括处理器1201、存储器1202和收发机1203。
处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处理器1201在执行操作时所使用的数据。收发机1203用于在处理器1201的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥，具体由处理器1201代表的一个或多个处理器和存储器1202代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1201负责管理总线架构和通常的处理，存储器1202可以存储处理器1201在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1201中，或者由处理器1201 实现。在实现过程中，信号处理流程的各步骤可以通过处理器1201中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1201可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块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1202，处理器1201读取存储器1202中的信息，结合其硬件完成信号处理流程的步骤。
具体地，处理器1201，用于读取存储器1202中的计算机指令，当处理器1201执行所述计算机指令时实现：
接收发送单元发送的辅助数据和目标基站的标识；
根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，
分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
在一种可选的实施例中，所述处理器1201，具体用于：
向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
在一种可选的实施例中，所述处理器1201，具体用于：
分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带 有所述目标基站的标识；
分别接收所述各个AMF返回的路由回复；
根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
在一种可选的实施例中，所述LMF中存储有基站和AMF的映射关系；所述处理器1201，具体用于：
根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
在一种可选的实施例中，所述处理器1201，还可以用于：
接收NRF发送的事件通知；所述事件通知用于标识任一基站对应的AMF发生更新；
根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
在一种可选的实施例中，所述处理器1201，还可以用于：
针对任一AMF，接收所述AMF发送的事件通知；所述事件通知用于标识所述AMF对应的基站发生更新；
根据所述事件通知，对所述AMF及对应的基站的映射关系进行更新。
在一种可选的实施例中，所述目标基站为部署在移动对象上的基站。
基于相同的技术构思，本申请实施例还提供了一种发送单元。该发送单元能够执行上述实施例中实现的任一项通信方法。
图13示出了本申请实施例提供的该发送单元的结构示意图，即示出了发送单元的另一结构示意图。如图13所示，该发送单元包括处理器1301、存储器1302和收发机1303。
处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。收发机1303用于在处理器1301的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥，具体由处理器1301代表的一个或多个处理器和存储器1302代表的存储器的各种电路链接在一起。总 线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。处理器1301负责管理总线架构和通常的处理，存储器1302可以存储处理器1301在执行操作时所使用的数据。
本申请实施例揭示的流程，可以应用于处理器1301中，或者由处理器1301实现。在实现过程中，信号处理流程的各步骤可以通过处理器1301中的硬件的集成逻辑电路或者软件形式的指令完成。处理器1301可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块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1302，处理器1301读取存储器1302中的信息，结合其硬件完成信号处理流程的步骤。
具体地，处理器1301，用于读取存储器1302中的计算机程序，当处理器1301执行所述计算机程序时实现：
确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，
向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
在一种可选的实施例中，所述处理器1301，具体用于：
根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
基于相同的技术构思，本申请实施例还提供了一种通信系统，包括发送单元、至少一个定位管理功能实体LMF、至少一个移动性管理功能实体AMF和至少一个基站；其中，发送单元，如图1所示的LCS客户端为一种可选的发送单元，用于采用上述任一项所述的发送单元，所述LMF采用上述任一项所述的LMF。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要 求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种通信方法，其特征在于，应用于定位管理功能实体LMF，所述方法包括：
    接收发送单元发送的辅助数据和目标基站的标识；
    根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，
    分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
  2. 根据权利要求1所述的方法，其特征在于，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
  3. 根据权利要求1所述的方法，其特征在于，所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
    向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
    接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
  4. 根据权利要求1所述的方法，其特征在于，所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
    分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带有所述目标基站的标识；
    分别接收所述各个AMF返回的路由回复；
    根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
  5. 根据权利要求1所述的方法，其特征在于，所述LMF中存储有基站和AMF的映射关系；所述根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，包括：
    根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    接收NRF发送的事件通知，所述事件通知用于标识任一基站对应的AMF发生更新；
    根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
  7. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    针对任一AMF，接收所述AMF发送的事件通知，所述事件通知用于标识所述AMF对应的基站发生更新；
    根据所述事件通知，对所述AMF及其对应的基站的映射关系进行更新。
  8. 根据权利要求1～7中任一项所述的方法，其特征在于，所述目标基站为部署在移动对象上的基站。
  9. 一种通信方法，其特征在于，应用于发送单元，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心；所述方法包括：
    确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，
    向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
  10. 根据权利要求9所述的方法，其特征在于，所述确定目标基站对应的目标定位管理功能实体LMF，包括：
    根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
  11. 一种定位管理功能实体LMF，其特征在于，包括：
    接收模块，用于接收发送单元发送的辅助数据和目标基站的标识；
    处理模块，用于根据所述目标基站的标识，确定所述目标基站对应的目 标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
  12. 一种发送单元，其特征在于，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心；所述发送单元包括：
    数据发送模块，确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
  13. 一种定位管理功能实体LMF，其特征在于，包括存储器，收发机，处理器；
    所述存储器，用于存储计算机指令；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机指令并执行如下步骤：
    接收发送单元发送的辅助数据和目标基站的标识；
    根据所述目标基站的标识，确定所述目标基站对应的目标移动性管理功能实体AMF，并向所述目标AMF发送所述辅助数据；或者，
    分别向所述LMF对应的各个AMF发送所述辅助数据和所述目标基站的标识。
  14. 根据权利要求13所述的LMF，其特征在于，所述发送单元为应用功能实体AF、位置服务LCS客户端或导航中心。
  15. 根据权利要求13所述的LMF，其特征在于，所述处理器，具体用于：
    向网络注册功能实体NRF发送第一请求；所述第一请求中携带有所述目标基站的标识；
    接收所述NRF发送的第一回复，所述第一回复中携带有所述目标AMF的信息。
  16. 根据权利要求13所述的LMF，其特征在于，所述处理器，具体用于：
    分别向所述LMF对应的各个AMF发送路由请求，所述路由请求中携带 有所述目标基站的标识；
    分别接收所述各个AMF返回的路由回复；
    根据所述各个AMF返回的路由回复，将所述目标基站对应的AMF确定为所述目标AMF。
  17. 根据权利要求13所述的LMF，其特征在于，所述LMF中存储有基站和AMF的映射关系；所述处理器，还可以用于：
    根据所述目标基站的标识，在所述基站和AMF的映射关系中，查找所述目标基站对应的目标AMF。
  18. 根据权利要求17所述的LMF，其特征在于，所述处理器，还可以用于：
    接收NRF发送的事件通知；所述事件通知用于标识任一基站对应的AMF发生更新；
    根据所述事件通知，对所述基站及对应的AMF的映射关系进行更新。
  19. 根据权利要求17所述的LMF，其特征在于，所述处理器，还可以用于：
    针对任一AMF，接收所述AMF发送的事件通知；所述事件通知用于标识所述AMF对应的基站发生更新；
    根据所述事件通知，对所述AMF及对应的基站的映射关系进行更新。
  20. 根据权利要求13～19中任一项所述的LMF，其特征在于，所述目标基站为部署在移动对象上的基站。
  21. 一种发送单元，其特征在于，包括存储器，收发机，处理器；
    所述存储器，用于存储计算机指令；
    所述收发机，用于在所述处理器的控制下收发数据；
    所述处理器，用于读取所述存储器中的计算机指令并执行如下步骤：
    确定目标基站对应的目标定位管理功能实体LMF，并向所述目标LMF发送辅助数据和所述目标基站的标识；或者，
    向预先配置的第一LMF发送辅助数据和目标基站的标识，以使所述第一 LMF确定目标LMF，并向所述目标LMF发送所述辅助数据和所述目标基站的标识。
  22. 根据权利要求21所述的发送单元，其特征在于，所述处理器，具体用于：
    根据预先配置的各个LMF的服务范围和目标移动对象的当前位置，确定所述目标基站对应的目标LMF；所述目标移动对象为部署所述目标基站的移动对象。
  23. 一种通信系统，其特征在于，包括发送单元、至少一个定位管理功能实体LMF、至少一个移动性管理功能实体AMF和至少一个基站；所述发送单元采用如权利要求21～22中的任一项所述的发送单元，所述LMF采用如权利要求13～20中任一项所述的LMF。
  24. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机指令，所述计算机指令被处理器执行时实现如权利要求1至8中任一项所述的方法，或如权利要求9至10中任一项所述的方法。
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