CN114900794B - Communication method, device, system and storage medium - Google Patents

Communication method, device, system and storage medium Download PDF

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Publication number
CN114900794B
CN114900794B CN202210673014.4A CN202210673014A CN114900794B CN 114900794 B CN114900794 B CN 114900794B CN 202210673014 A CN202210673014 A CN 202210673014A CN 114900794 B CN114900794 B CN 114900794B
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positioning
amf
lmf
equipment
measurement
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CN114900794A (en
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刘英男
李福昌
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a communication method, equipment, a system and a storage medium, which relate to the technical field of communication and are used for eliminating the risk of positioning data leakage and ensuring the safety of terminal position information. The communication method comprises the following steps: the light AMF equipment receives the measurement response message sent by the base station equipment and sends the measurement response message to the LMF equipment; the measurement response message is used for requesting the LMF device to determine the positioning result of the terminal based on the positioning measurement data. Further, the lightweight AMF device receives the positioning result sent by the LMF device and sends the positioning result to the server.

Description

Communication method, device, system and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communications method, device, system, and storage medium.
Background
With the popularity of mobile communication networks and the development of fifth generation mobile communication technology (5G) location technology, the 5G network can provide accurate location services. In the current communication network architecture, as shown in fig. 1, when a terminal needs to be located, location data of the terminal is transmitted to a location application of the campus network through a public network of the mobile communication network, where the location data of the terminal includes location measurement data of the terminal and a location result of the terminal.
Because many industries have high privacy requirements for terminal location information of a campus network. In the process of positioning the terminal, positioning data can be transmitted to a public network, so that the risk of positioning data leakage exists, and the requirement of a user cannot be met.
Disclosure of Invention
The invention provides a communication method, equipment, a system and a storage medium, which are used for eliminating the risk of leakage of positioning data and ensuring the safety of terminal position information.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a communication method is provided for use with a lightweight access and mobility management function (access and mobility management function, AMF) device in a campus communication system that further includes a location management function (location management function, LMF) device and a base station device. The communication method comprises the following steps: the light AMF equipment receives the measurement response message sent by the base station equipment and sends the measurement response message to the LMF equipment; the measurement response message is used for requesting the LMF device to determine the positioning result of the terminal based on the positioning measurement data. Further, the lightweight AMF device receives the positioning result sent by the LMF device and sends the positioning result to the server.
The invention provides a communication method, under the park communication system provided by the invention, the transmission of positioning measurement data and positioning results between the LMF device and the base station device is realized through the lightweight AMF device under the park network, so that the forwarding of the positioning measurement and the feedback of the positioning results in the devices in the park network can be ensured in the process of carrying out positioning service on the terminal, the risk of positioning data leakage caused by the transmission of the positioning data through the AMF device of the public network is eliminated, and the safety of the terminal position information is ensured.
In one possible design, the communication method further includes: the light AMF equipment receives a measurement request message sent by the LMF equipment; the measurement request message is used for requesting to measure the positioning measurement data of the terminal, and is sent to the lightweight AMF equipment under the condition that the transmission protocol of the message to be sent corresponds to the terminal positioning service after the LMF equipment generates the message to be sent. Further, the lightweight AMF device transmits a measurement request message to the base station device, so that the base station device transmits a measurement response message to the lightweight AMF device. According to the design, the lightweight AMF equipment in the park network is used as intermediate equipment between the LMF equipment and the base station equipment, the measurement request message and the measurement response message are transmitted, and the risk of leakage of positioning measurement data of the terminal is eliminated.
In a second aspect, the present invention provides a communication method applied to an LMF device in a campus communication system, the campus communication system further including a lightweight AMF device; the communication method comprises the following steps: the LMF equipment receives a measurement response message sent by the light AMF equipment; the measurement response message carries positioning measurement data of the terminal. Further, the LMF device determines a positioning result of the terminal based on the positioning measurement data, and sends the positioning result to the lightweight AMF device.
The invention provides a communication method, under the park communication system provided by the invention, the LMF device selects the lightweight AMF device under the park network to realize the transmission of the positioning measurement data and the positioning result between the LMF device and the base station device, so that the feedback of the positioning measurement and the positioning result can be forwarded in the device in the park network in the process of carrying out the positioning service on the terminal, the risk of positioning data leakage caused by the transmission of the positioning data by the AMF device of the public network is eliminated, and the safety of the terminal position information is ensured.
In one possible design, the campus communication system further includes a public network AMF device. The communication method further comprises the following steps: and the LMF equipment responds to the positioning request message sent by the public network AMF equipment and generates a message to be sent. Further, under the condition that a transmission protocol of the message to be sent corresponds to the terminal positioning service, the LMF device determines the message to be sent as a measurement request message and sends the measurement request message to the lightweight AMF device; the measurement request message is used to request positioning measurement data of the measurement terminal. According to the design, the light AMF equipment under the LMF equipment selection park network is used as intermediate equipment between the LMF equipment and the base station equipment, the measurement request message and the measurement response message are transmitted, and the risk of leakage of positioning measurement data of the terminal is eliminated.
In one possible design, the transport protocol corresponding to the terminal positioning service includes a long term evolution positioning protocol (LTE positioning protocol, LPP) or a new air interface positioning protocol copy (NR positioning protocol A, NRPPa).
In a third aspect, the present invention provides a campus communication system. The park communication system comprises AMF equipment, LMF equipment and base station equipment. The light AMF equipment is connected with the base station equipment and the LMF equipment respectively; the lightweight AMF device is for performing the communication method in the first aspect, and the LMF device is for performing the communication method in the second aspect.
In a fourth aspect, an AMF device is provided and deployed in a campus communication system, where the campus communication system further includes an LMF device and a base station device; the lightweight AMF device includes a receiving unit and a transmitting unit. The receiving unit is used for receiving the measurement response message sent by the base station equipment; the measurement response message carries positioning measurement data of the terminal, and is used for requesting the LMF equipment to determine a positioning result of the terminal based on the positioning measurement data; the transmitting unit is used for transmitting a measurement response message to the LMF equipment; the receiving unit is also used for receiving the positioning result sent by the LMF equipment; the sending unit is also used for sending the positioning result to the server.
In one possible design, the receiving unit is further configured to receive a measurement request message sent by the LMF device; the measurement request message is used for requesting to measure the positioning measurement data of the terminal, and is sent to the lightweight AMF equipment under the condition that the transmission protocol of the message to be sent corresponds to the terminal positioning service after the LMF equipment generates the message to be sent. The transmitting unit is further configured to transmit a measurement request message to the base station apparatus, so that the base station apparatus transmits a measurement response message to the lightweight AMF apparatus.
In a fifth aspect, an LMF device is provided for deployment in a campus communication system, the campus communication system further comprising a lightweight AMF device; the LMF device comprises a receiving unit, a determining unit and a transmitting unit. The receiving unit is used for receiving the measurement response message sent by the light AMF equipment; the measurement response message carries positioning measurement data of the terminal; the determining unit is used for determining a positioning result of the terminal based on the positioning measurement data; the transmitting unit is used for transmitting the positioning result to the lightweight AMF equipment.
In one possible design, the campus communication system further includes a public network AMF device; the LMF device further comprises a generating unit. The generation unit is used for responding to the positioning request message sent by the public network AMF equipment and generating a message to be sent; the determining unit is further configured to determine the message to be sent as a measurement request message when the transmission protocol of the message to be sent corresponds to the terminal positioning service; the sending unit is also used for sending a measurement request message to the lightweight AMF equipment; the measurement request message is used to request positioning measurement data of the measurement terminal.
In a sixth aspect, a lightweight AMF device is provided, comprising a memory and a processor; a memory is coupled to the processor, the memory for storing computer program code comprising computer instructions which, when executed by the processor, cause the lightweight AMF device to perform the communication method as in the first aspect.
In a seventh aspect, there is provided an LMF device comprising a memory and a processor; a memory is coupled to the processor, the memory for storing computer program code comprising computer instructions which, when executed by the processor, cause the LMF device to perform the communication method as in the second aspect.
In an eighth aspect, there is provided a computer-readable storage medium having instructions stored therein that, when executed on a lightweight AMF device, cause the lightweight AMF device to perform the communication method as in the first aspect.
In a ninth aspect, there is provided a computer readable storage medium having instructions stored therein that, when executed on an LMF device, cause the LMF device to perform the communication method as in the second aspect.
Drawings
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a terminal access AMF device and terminal positioning according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a communication system according to a second embodiment of the present invention;
fig. 4 is a schematic diagram of an LPP protocol stack structure according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an NRPPa protocol stack according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a communication method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a communication method according to an embodiment of the present invention
Fig. 8 is a schematic flow chart III of a communication method according to an embodiment of the present invention;
fig. 9 is a schematic flow chart of a communication method according to an embodiment of the present invention;
fig. 10 is a schematic flow chart fifth of a communication method according to an embodiment of the present invention;
fig. 11 is a flowchart of a communication method according to a sixth embodiment of the present invention;
fig. 12 is a schematic diagram of a communication method according to an embodiment of the present invention;
fig. 13 is a schematic flow chart of a terminal positioning according to an embodiment of the present invention;
Fig. 14 is a schematic structural diagram of a lightweight AMF device according to an embodiment of the invention;
fig. 15 is a schematic structural diagram of an LMF device according to an embodiment of the present invention;
FIG. 16 is a second schematic structural diagram of a lightweight AMF device according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram III of a lightweight AMF device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.
In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the description of the present invention, "/" means "or" unless otherwise indicated, for example, A/B may mean A or B. "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Further, "at least one", "a plurality" means two or more. The terms "first," "second," and the like do not limit the number and order of execution, and the terms "first," "second," and the like do not necessarily differ.
In the prior art, a terminal accesses to a base station device and a positioning process of the terminal is shown in fig. 2, and the terminal sends an initial attachment request to the base station device to access to a public network AMF device of a public network.
As shown in fig. 2, the process of accessing the terminal to the base station device through the public network AMF device and locating the terminal through the public network AMF device includes the following steps:
s1, a terminal sends an initial attachment request to base station equipment.
S2, the base station equipment sends an initial attachment request to the public network AMF equipment.
S3, the AMF equipment sends an initial attachment response to the base station equipment.
S4, the base station equipment sends an initial attachment response to the terminal, and the terminal is accessed to the base station equipment.
S5, the positioning application in the server sends a positioning service request to the mobile location center (gateway mobile location centre, GMLC) device.
S6, the GMLC device sends a location subscription data request to a unified data management (unified data management, UDM) device.
And S7, the UDM equipment transmits a response message based on the positioning subscription data request to the GMLC equipment.
S8, the GMLC device sends a positioning request to the AMF device.
S9, the AMF equipment sends a terminal positioning request to the LMF equipment.
S10, the LMF equipment sends a terminal measurement request to the AMF equipment.
S11, the AMF equipment sends a terminal measurement request to the base station equipment.
S12, the base station equipment sends terminal measurement data to the AMF equipment.
S13, the AMF equipment sends terminal measurement data to the LMF equipment.
S14, the LMF equipment sends a terminal position result to the AMF equipment.
S15, the AMF equipment sends a terminal position result to the GMLC equipment.
S16, the GMLC device sends a terminal position result to a positioning application in the server to finish positioning of the terminal.
In the process of positioning the terminal, positioning measurement data and a positioning result are transmitted through the public network AMF equipment, and the public network AMF equipment is arranged in the public network, so that the risk of leakage of terminal position information is faced in the process of transmitting the terminal positioning data.
In order to solve the above-mentioned problems in the prior art, an embodiment of the present invention provides a campus communication system, as shown in fig. 3, where the campus communication system 20 includes a base station device 21, a terminal 22, a lightweight AMF device 23, an LMF device 26, a GMLC device 27, a server 28, and a public network AMF device 24 and a UDM device 25 deployed under a public network.
As shown in fig. 3, the base station device 21 is connected to the terminal 22, the lightweight AMF device 23, and the public network AMF device 24, the lightweight AMF device 23 is further connected to the LMF device 26, the public network AMF device 24 is connected to the UDM device 25, the LMF device 26, and the GMLC device 27 is further connected to the server 28. In the campus communication system 20, the devices may be connected by a wired connection or by a wireless connection, which is not limited in the embodiment of the present invention.
The base station device 21 may be used to access the terminal 22 to the public network AMF device 24.
The base station device 21 may be further configured to obtain positioning measurement data of the terminal after receiving the measurement request message sent by the lightweight AMF device 23, carry the positioning measurement data in the measurement response message, and send the measurement response message to the lightweight AMF device.
The terminal 22 may access the public network AMF device 24 through the base station device 21.
The terminal 22 may be further configured to report, after receiving, by the base station device 21, the terminal measurement request sent by the lightweight AMF device 23, the positioning measurement data of the terminal to the lightweight AMF device 23 by the base station device 21.
The lightweight AMF device 23 may be an AMF device having an LPP protocol stack as shown in fig. 4, an NRPPa protocol stack as shown in fig. 5, and LPP and NRPPa message transparent transmission functions.
Under the LPP protocol stack architecture, the terminal 22 and the base station device 21 are connected through an NR-Uu interface or an LTE-Uu interface, the base station device 21 and the lightweight AMF device 23 are connected through an NGC interface, the lightweight AMF device 23 and the LMF device 26 are connected through an NL1 interface, and signaling is transmitted between the interfaces in a transparent transmission manner.
Under the NRPPa protocol stack architecture, the base station device 21 and the lightweight AMF device 23 are connected through a control plane interface NG-C between the base station device and the 5G core network, the lightweight AMF device 23 and the LMF device 26 are connected through an NL1 interface, and signaling is transmitted in a transparent transmission form between the interfaces.
In the architecture shown in fig. 4 and 5, the definitions of the terms are as follows:
layer L1: the physical layer, which provides all functions required for bit stream transmission in the physical medium, provides information transmission services for the media access control layer (media access control, MAC) layer and higher layers, and the services provided by the physical layer are described by a transmission channel, which describes characteristics of the physical layer for data transmitted by the MAC layer and higher layers.
L2 layer: the MAC layer has specific functions including: mapping of the roadbed channel to the transport channel; error correction by hybrid automatic repeat request (hybrid automatic repeat reQuest, HARQ); priority processing among terminals is realized through dynamic scheduling; the priority processing of a plurality of logic channels in the terminal is realized through the logic channel priority;
IP: the network layer is responsible for routing, splitting/interconnecting internet protocol (internet protocol, IP) datagrams; data distribution (distribution to transport layer protocols according to protocol and port number);
sctp—transport layer, stream control transport protocol (stream control transmission protocol, SCTP) is a reliable generic transport layer protocol used over IP networks. It provides stable, orderly data transfer services between two endpoints, much like the transmission control protocol (transmission control protocol, TCP), and can protect data message boundaries, such as the user datagram protocol (user datagram protocol, UDP). However, unlike TCP and UDP, SCTP provides these benefits through Multi-homing (Multi-homing) and Multi-streaming (Multi-streaming) functions, both of which may improve availability.
NGAP: NG application protocol (NG application protocol, NGAP), application layer, protocol is used to transport NRPPa messages over NG-C interface. The NGAP protocol is also used to initiate and terminate positioning procedures related to NG radio access network (NG radio access network, NG-RAN) nodes.
TCP: the transmission layer protocol is connected transmission, and ensures that the finally received data is reliable through conflict, error detection and retransmission of the IP packet at the lower layer; UDP is connectionless and no matter whether the packet is sent out, there is no check of whether the packet is successful and sent correctly, 100% correct data transmission cannot be guaranteed, but the overhead is small.
TLS: the transport layer security protocol (transpot layer security, TLS) is a higher layer protocol that must be based on reliable data transmission, so is typically on top of TCP, but may of course also be on top of SCTP, but must not be on top of UDP.
The lightweight AMF device 23 may also be configured to send a terminal measurement request to the base station device 21 in response to the terminal measurement request sent by the LMF device 26; transmitting terminal measurement data to the LMF device 26 in response to the terminal measurement data transmitted from the base station device 21; the terminal location results are sent to the GMLC device 27 in response to the terminal location results sent by the LMF device 26.
The public network AMF device 24 may be configured to receive an initial attach request sent by the terminal 22 through the base station device 21, and send an initial attach response to the terminal 21, so that the terminal device accesses successfully.
The public network AMF device 24 may also be configured to send a terminal location request to the LMF device 26 in response to a location request sent by the GMLC device 27.
The UDM device 25 may be configured to determine whether the server 28 that initiates the location is a registered application in response to the location subscription data request sent by the GMLC device 27, and feed back the determination result to the GMLC device 27.
The LMF device 26 is preconfigured with the IP addresses of the lightweight AMF device 23 and the public network AMF device. As shown in table 1 below.
Table 1: AMF IP address table
Apparatus and method for controlling the operation of a device IP address
Lightweight AMF device 23 xx.xx.xx.a
Public network AMF device 24 xx.xx.xx.b
The LMF device 26 may be configured to generate a measurement request message after receiving the terminal location request sent by the public network AMF device 24, and select the IP address of the lightweight AMF device 23 to send the measurement request message. Wherein the measurement request message is used to instruct the lightweight AMF device 23 to acquire positioning measurement data of the terminal from the base station device 21 or the terminal 22.
The LMF device 26 may also be configured to calculate a positioning result of the terminal after receiving the positioning measurement data of the terminal sent by the lightweight AMF device 23, and send the positioning result of the terminal to the lightweight AMF device 23.
The GMLC device 27 may be configured to send a location subscription data request to the UDM device 25 after receiving a location service request sent by a location application in the server 28, verifying whether the location application in the server 28 that initiated the location service request is a registered application.
The GMLC device 27 may also be configured to generate a mobile terminated location request (mobile-terminated location request, MT-LR) after the location application that initiates the location service request in the server 28 is successfully validated, and send the mobile terminated location request to the public network AMF device 24, to instruct the public network AMF device to initiate a location service for the terminal.
The GMLC device 27 may also be configured to, upon receiving the positioning result of the terminal transmitted by the lightweight AMF device 23, transmit the positioning result of the terminal to the positioning-initiating server 28.
The server 28 includes a location application for initiating a location service request.
Fig. 6 is a flow diagram illustrating a method of communication according to some example embodiments. In some embodiments, the above-described communication method may be applied to a campus communication system as shown in fig. 3. The following describes a communication method provided by an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 6, the communication method provided in the embodiment of the present invention is applied to the campus communication system 20 described above, including S301-S305.
S301, the lightweight AMF equipment receives a measurement response message sent by the base station equipment.
The measurement response message carries positioning measurement data of the terminal, and the positioning measurement response message is used for requesting the LMF device to determine a positioning result of the terminal based on the positioning measurement data.
As a possible implementation manner, the lightweight AMF device acquires the measurement response message sent by the base station device through the NG-C interface, and does not process the measurement response message.
S302, the lightweight AMF equipment sends a measurement response message to the LMF equipment.
As one possible implementation manner, the lightweight AMF device sends a measurement response message acquired from the base station device to the LMF device connected through the NL1 interface, so that the LMF device determines positioning measurement data of the terminal after receiving the measurement response message.
It should be noted that, since the third generation partnership project (3rd generation partnership project,3GPP) 38.305.6.4.1 describes a positioning-related flow protocol, the LPP and NRPPa are followed, and in the transmission protocol of the message to be transmitted, if the LPP or NRPPa is included, the message to be transmitted needs to be transmitted through the AMF device.
The lightweight AMF device is set to an AMF device having LPP protocol stack, NRPPa protocol stack, and LPP and NRPPa message transparent transmission functions.
Optionally, the lightweight AMF device in the campus communication system may also be configured as an AMF device having the same function as the public network AMF device.
It can be appreciated that the lightweight AMF device supports transmission of messages related to the positioning process, and can perform functions and roles of the public network AMF device in the positioning process in the campus communication system, so that the messages related to the positioning process are kept to be transmitted in the campus network.
And by setting the lightweight AMF equipment to only support the LPP protocol stack, the NRPPa protocol stack and the transparent transmission function, other functions are realized through the public network AMF equipment under the condition that the information related to the positioning process is transmitted through the lightweight AMF equipment, the lightweight AMF equipment deployed in the park network can be ensured to have simplified functions, and the construction cost of the park communication system is reduced.
Correspondingly, the LMF device receives a measurement response message carrying positioning measurement data and sent by the light AMF device, and obtains the positioning measurement data.
S303, the LMF equipment determines a positioning result of the terminal based on the positioning measurement data.
Wherein the positioning result includes location information of the terminal.
As a possible implementation, the LMF device calculates positioning measurement data, and determines a positioning result of the terminal.
S304, the LMF device sends a positioning result to the lightweight AMF device.
As one possible implementation, the LMF device generates the message to be sent after generating the positioning result. Further, the LMF device judges the protocol type included in the transmission protocol of the message to be transmitted, determines whether LPP or NRPPa exists in the transmission protocol included in the message to be transmitted,
in the case that there is LPP or NRPPa in the transport protocol included in the message to be sent, the LMF device selects to send the message to be sent to the IP address of the lightweight AMF device in the campus network.
It should be noted that, since the transmission protocol of the message related to the positioning procedure includes LPP or NRPPa. Therefore, in the case that the transmission protocol of the message to be sent is determined to include LPP or NRPPa, that is, the location data of the terminal may be included in the message to be sent is determined, in this case, the message to be sent is sent to the lightweight AMF device in the campus network, so that it is ensured that the location data is not transmitted to the public network AMF device.
In some embodiments, the operations and maintenance personnel of the campus communication system are configured with a judgment module in the LMF device in advance. The judging module is used for judging whether the message to be sent is a measurement request message or a positioning result feedback message. The measurement request message is used for indicating the base station to measure the position of the terminal, and the positioning result feedback message comprises the positioning result of the terminal and is used for indicating the position information of the terminal.
As shown in fig. 7, the LMF device determines whether the message to be transmitted is a measurement request message or a positioning result feedback message. Under the condition that the message to be sent is a measurement request message or a positioning result feedback message, the LMF equipment selects to send the message to be sent to the IP address of the lightweight AMF equipment in the park network; in the case that the message to be sent is not a measurement request message or a positioning result feedback message, the LMF device selects to send the message to be sent to the IP address of the public network AMF device.
Correspondingly, the lightweight AMF device receives the positioning result sent by the LMF device.
S305, the lightweight AMF device sends a positioning result to the server.
As a possible implementation manner, the lightweight AMF device transmits the received positioning result feedback message carrying the positioning result to the GMLC gateway, and the GMLC gateway sends the positioning result to the server requesting the terminal positioning service, so that the positioning application obtains the positioning result of the terminal.
In one design, in order to enable the lightweight AMF device to serve as an intermediate device between the LMF device and the base station device, a measurement request message and a measurement response message are transmitted, as shown in fig. 8, a communication method provided in an embodiment of the present invention further includes S401-S404.
S401, the LMF device responds to the positioning request message sent by the public network AMF device to generate a message to be sent.
S402, the LMF device determines whether the message to be sent is a measurement request message.
The measurement request message is used for requesting positioning measurement data of the measurement terminal.
As one possible implementation, after generating the message to be sent, the LMF device determines whether a transmission protocol of the message to be sent includes a transmission protocol corresponding to the terminal location service. Further, if the transmission protocol of the message to be sent includes a transmission protocol corresponding to the terminal positioning service, the LMF device determines that the message to be sent is a measurement request message.
It should be noted that, the transmission protocol corresponding to the terminal positioning service includes LPP or NRPPa.
It can be understood that after receiving the positioning request message sent by the AMF device, the LMF device needs to send a measurement request message to the base station device or the terminal, where a transmission protocol of the measurement request message includes LPP or NRPPa. Accordingly, by determining a transmission protocol of a message to be transmitted generated after receiving a location request message transmitted by an AMF device, it is possible to determine whether the message to be transmitted is a measurement request message.
In some embodiments, since the message to be sent is generated by the LMF device after receiving the positioning request message sent by the AMF device, the LMF device determines, according to the message sequence in the positioning service flow, that the message to be sent is a measurement request message.
S403, the LMF device sends a measurement request message to the lightweight AMF device.
As a possible implementation manner, according to the case that the message to be sent is determined to be the measurement request message in the step S402, the LMF device selects to send the measurement request message to the IP address of the lightweight AMF device, so that the lightweight AMF device is used as an intermediate device between the LMF device and the base station device, and the positioning measurement data of the terminal is transmitted in a subsequent process.
Correspondingly, the lightweight AMF device receives the measurement request message sent by the LMF device.
S404, the lightweight AMF equipment sends a measurement request message to the base station equipment, so that the base station equipment sends a measurement response message to the lightweight AMF equipment.
It can be understood that, because the measurement response message sent by the base station device is generated according to the measurement request message sent by the lightweight AMF device, the measurement response message carrying the positioning measurement data of the terminal is sent to the lightweight AMF device, and the lightweight AMF device sends the measurement response message to the LMF device in the subsequent process, so that the positioning measurement data of the terminal is only transmitted in the campus network, and the transmission through the public network AMF device is avoided, thereby causing the leakage of the positioning measurement data.
Hereinafter, the operations performed by the lightweight AMF device will be described by taking the application of the communication method described above to the lightweight AMF device in the campus communication system as an example, and as shown in fig. 9, the communication method provided by the embodiment of the present invention further includes S501-S504.
S501, the lightweight AMF equipment receives a measurement response message sent by the base station equipment.
The measurement response message is used for requesting the LMF device to determine the positioning result of the terminal based on the positioning measurement data.
It should be noted that, how the lightweight AMF device specifically receives the measurement response message sent by the base station device may refer to the description in step S301 in the embodiment of the present invention, which is not repeated here.
S502, the lightweight AMF equipment sends a measurement response message to the LMF equipment.
It should be noted that, how the lightweight AMF device specifically sends the measurement response message to the LMF device may refer to the description in step S302 in the embodiment of the present invention, which is not repeated herein.
S503, the lightweight AMF device receives the positioning result sent by the LMF device.
It should be noted that, how the lightweight AMF device specifically receives the positioning result sent by the LMF device may refer to the description in step S304 in the embodiment of the present invention, which is not repeated herein.
S504, the lightweight AMF device sends a positioning result to the server.
It should be noted that, how the lightweight AMF device specifically sends the positioning result to the server may refer to the description in step S305 in the embodiment of the present invention, which is not repeated here.
In one design, in order to enable the lightweight AMF device to serve as an intermediate device between the LMF device and the base station device, a measurement request message and a measurement response message are transmitted, as shown in fig. 10, a communication method provided in an embodiment of the present invention further includes S601-S602.
S601, the lightweight AMF equipment receives a measurement request message sent by the LMF equipment.
The measurement request message is sent to the lightweight AMF device under the condition that a transmission protocol of the message to be sent corresponds to the terminal positioning service after the LMF device generates the message to be sent.
It should be noted that, how the lightweight AMF device specifically receives the measurement request message sent by the LMF device may refer to the description in step S403 in the embodiment of the present invention, which is not repeated herein.
S602, the lightweight AMF device sends a measurement request message to the base station device, so that the base station device sends a measurement response message to the lightweight AMF device.
It should be noted that, how the lightweight AMF device specifically sends the measurement request message to the base station device may refer to the description in step S404 in the embodiment of the present invention, which is not repeated here.
In the following, the above communication method is applied to an LMF device in a campus communication system, and the operations performed by the LMF device are described, as shown in fig. 11, and the communication method provided by the embodiment of the present invention further includes S701-S703.
S701, the LMF device receives a measurement response message sent by the light AMF device.
The measurement response message carries positioning measurement data of the terminal.
It should be noted that, how the LMF device specifically receives the measurement response message sent by the lightweight AMF device may refer to the description in step S302 in the embodiment of the present invention, which is not repeated herein.
S702, the LMF device determines a positioning result of the terminal based on the positioning measurement data.
It should be noted that, how the LMF device determines the positioning result of the terminal based on the positioning measurement data may refer to the description in step S303 in the embodiment of the present invention, which is not repeated herein.
S703, the LMF device sends a positioning result to the lightweight AMF device.
It should be noted that, how the LMF device specifically sends the positioning result to the lightweight AMF device may refer to the description in step S304 in the embodiment of the present invention, which is not repeated herein.
In one design, in order to enable the lightweight AMF device to serve as an intermediate device between the LMF device and the base station device, a measurement request message and a measurement response message are transmitted, as shown in fig. 12, a communication method provided in an embodiment of the present invention further includes S801-S803.
S801, the LMF device responds to a positioning request message sent by the public network AMF device to generate a message to be sent.
It should be noted that, how the LMF device specifically generates the message to be sent in response to the positioning request message sent by the public network AMF device may refer to the description in step S401 in the embodiment of the present invention, which is not repeated herein.
S802, the LMF device determines the message to be sent as a measurement request message under the condition that the transmission protocol of the message to be sent corresponds to the terminal positioning service.
The measurement request message is used for requesting positioning measurement data of the measurement terminal. The transport protocol corresponding to the terminal positioning service includes LPP or NRPPa.
It should be noted that, how the LMF device determines the message to be sent as the measurement request message specifically may refer to the description in step S402 in the embodiment of the present invention, which is not repeated herein.
S803, the LMF device sends a measurement request message to the lightweight AMF device.
It should be noted that, how the LMF device specifically sends the measurement request message to the lightweight AMF device may refer to the description in step S403 in the embodiment of the present invention, which is not repeated herein.
In one design, taking the terminal 22 as an example of a terminal in a campus network, in the campus communication system 20 provided in the embodiment of the present invention, after the terminal 22 is accessed to the public network AMF device 24 through the base station device 21, the subsequent positioning flow for the terminal is shown in fig. 13, and the communication method provided in the embodiment of the present invention further includes S901-S912.
S901, the location application in the server sends a location service request for the terminal to the GMLC device.
The positioning service request comprises an identifier of a positioning application and an identifier of a terminal.
S902, the GMLC device sends a location subscription data request to the UDM device.
The subscription positioning data request comprises an identifier of a positioning application and an identifier of a terminal.
S903, the UDM device sends the subscription data of the positioning application and the subscription data of the terminal to the GMLC device.
S904, the GMLC device sends a positioning request to the public network AMF device.
After acquiring the subscription data of the positioning application and the subscription data of the terminal, the GMLC device determines whether the positioning application has positioning authority to the terminal, and sends a positioning request to the public network AMF device when the positioning application has positioning authority to the terminal.
S905, the public network AMF device sends a terminal positioning request to the LMF device.
S906, the LMF device sends a terminal measurement request to the lightweight AMF device.
S907, the lightweight AMF device forwards the terminal measurement request to the base station device.
The terminal measurement request is used for indicating the base station equipment to measure the position information of the terminal.
S908, the base station device transmits the terminal measurement data to the lightweight AMF device.
S909, the lightweight AMF device forwards the terminal measurement data to the LMF device.
S910, after receiving the terminal measurement data, the LMF device calculates and generates a terminal position result and sends the terminal position result to the lightweight AMF device.
S911, the lightweight AMF device forwards the terminal position result to the GMLC device.
And S912, the GMLC device sends the obtained terminal position result to a positioning application which requests terminal positioning.
The invention provides a communication method, equipment, a system and a storage medium, and under the park communication system provided by the invention, the transmission of positioning measurement data and positioning results between the LMF equipment and the base station equipment is realized through the lightweight AMF equipment under the park network, so that the feedback of the positioning measurement and the positioning results can be forwarded in the equipment in the park network in the process of carrying out positioning service on the terminal, the risk of positioning data leakage caused by the transmission of the positioning data through the AMF equipment of the public network is eliminated, and the safety of terminal position information is ensured.
The foregoing description of the solution provided by the embodiments of the present invention has been mainly presented in terms of a method. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the invention can divide the functional modules of the user equipment according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiment of the present invention is schematic, which is merely a logic function division, and other division manners may be implemented in practice.
Fig. 14 is a schematic structural diagram of a lightweight AMF device 100 according to an embodiment of the invention, for executing the communication method described above. As shown in fig. 14, the lightweight AMF device 100 comprises a receiving unit 1001 and a transmitting unit 1002.
A receiving unit 1001, configured to receive a measurement response message sent by the base station device. The measurement response message carries positioning measurement data of the terminal, and the measurement response message is used for requesting the LMF device to determine a positioning result of the terminal based on the positioning measurement data. For example, as shown in fig. 8, the receiving unit 1001 may be used to perform S501.
A transmitting unit 1002, configured to transmit a measurement response message to the LMF device. For example, as shown in fig. 8, the transmission unit 1002 may be used to perform S502.
The receiving unit 1001 is further configured to receive a positioning result sent by the LMF device. For example, as shown in fig. 8, the receiving unit 1001 may be used to perform S503.
The sending unit 1002 is further configured to send the positioning result to the server. For example, as shown in fig. 8, the transmission unit 1002 may be used to perform S504.
Optionally, as shown in fig. 14, in the lightweight AMF device 100 provided in the embodiment of the invention, the receiving unit 1001 is further configured to receive a measurement request message sent by the LMF device. The measurement request message is used to request positioning measurement data of the measurement terminal. For example, as shown in fig. 9, the receiving unit 1001 may be used to perform S601.
The sending unit 1002 is further configured to send a measurement request message to the base station device, so that the base station device sends a measurement response message to the lightweight AMF device. For example, as shown in fig. 9, the transmission unit 1002 may be used to perform S602.
Fig. 15 is a schematic structural diagram of an LMF device according to an embodiment of the present invention, where the LMF device 110 is configured to perform the above communication method. As shown in fig. 15, the LMF device 110 includes a receiving unit 1101, a determining unit 1102, and a transmitting unit 1103.
A receiving unit 1101, configured to receive a measurement response message sent by the lightweight AMF device. The measurement response message carries positioning measurement data of the terminal. For example, as shown in fig. 10, the receiving unit 1101 may be used to perform S701.
A determining unit 1102, configured to determine a positioning result of the terminal based on the positioning measurement data. For example, as shown in fig. 10, the determination unit 1102 may be used to perform S702.
A sending unit 1103, configured to send the positioning result to the lightweight AMF device. For example, as shown in fig. 10, the transmission unit 1103 may be used to perform S703.
Optionally, as shown in fig. 15, in the LMF device 110 provided in the embodiment of the present invention, a generating unit 1104 is further included.
A generating unit 1104, configured to generate a message to be sent in response to the positioning request message sent by the public network AMF device. For example, as shown in fig. 11, the generation unit 1104 may be used to perform S801.
The determining unit 1102 is further configured to determine the message to be sent as a measurement request message if a transmission protocol of the message to be sent corresponds to the terminal positioning service. The measurement request message is used to request positioning measurement data of the measurement terminal. For example, as shown in fig. 11, the determination unit 1102 may be used to perform S802.
The sending unit 1103 is further configured to send a measurement request message to the lightweight AMF device. For example, as shown in fig. 11, the transmission unit 1103 may be used to execute S803.
Optionally, as shown in fig. 15, in the LMF device 110 provided in the embodiment of the present invention, a transmission protocol corresponding to a terminal positioning service includes LPP or NRPPa.
In the case of implementing the functions of the integrated modules in the form of hardware, the embodiment of the present invention provides a possible structural schematic diagram of a lightweight AMF device. The lightweight AMF device is used for executing the communication method executed by the lightweight AMF device in the above embodiment. As shown in fig. 16, the lightweight AMF device 120 comprises a processor 1201, a memory 1202, and a bus 1203. The processor 1201 and the memory 1202 may be connected by a bus 1203.
Processor 1201 is a control center of a lightweight AMF device, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 1201 may be a general-purpose central processing unit (central processing unit, CPU), or may be another general-purpose processor. Wherein the general purpose processor may be a microprocessor or any conventional processor or the like.
As one example, processor 1201 may include one or more CPUs, such as CPU 0 and CPU 1 shown in fig. 16.
Memory 1202 may be, but is not limited to, read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, as well as electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
As a possible implementation, the memory 1202 may exist separately from the processor 1201, and the memory 1202 may be connected to the processor 1201 by a bus 1203 for storing instructions or program code. The processor 1201, when calling and executing instructions or program code stored in the memory 1202, is capable of implementing the communication method provided by the embodiment of the present invention.
In another possible implementation, the memory 1202 may also be integrated with the processor 1201.
Bus 1203 may be an industry standard architecture (Industry Standard Architecture, ISA) bus, a peripheral interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 16, but not only one bus or one type of bus.
Note that the structure shown in fig. 16 does not constitute a limitation of the lightweight AMF device 120. In addition to the components shown in fig. 16, the lightweight AMF device 120 may include more or fewer components than shown in fig. 16, or may combine certain components, or a different arrangement of components.
As an example, in connection with fig. 14, the functions implemented by the receiving unit 1001 and the transmitting unit 1002 in the lightweight AMF device 100 are the same as those of the processor 1201 in fig. 16.
Optionally, as shown in fig. 16, the lightweight AMF device provided in an embodiment of the invention may further include a communication interface 1204.
A communication interface 1204 for connecting with other devices via a communication network. The communication network may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN), etc. The communication interface 1204 may include a receiving unit for receiving data, and a transmitting unit for transmitting data.
In one design, in the lightweight AMF device provided by the embodiments of the present invention, the communication interface may also be integrated in the processor.
Fig. 17 shows another hardware configuration of the lightweight AMF device in the embodiment of the invention. As shown in fig. 17, the lightweight AMF device 130 may include a processor 1301 and a communication interface 1302. Processor 1301 is coupled to communication interface 1302.
The function of the processor 1301 may be as described above with reference to the processor 1201. The processor 1301 also has a memory function, and the function of the memory 1202 described above can be referred to.
The communication interface 1302 is used to provide data to the processor 1301. The communication interface 1302 may be an internal interface of the lightweight AMF device or an external interface of the lightweight AMF device (corresponding to the communication interface 1204).
It should be noted that the structure shown in fig. 17 does not constitute a limitation of the lightweight AMF device, and the lightweight AMF device 130 may include more or less components than those shown in fig. 17, or may combine some components, or may be a different arrangement of components.
Meanwhile, the schematic structural diagram of one hardware of the LMF device provided in the embodiment of the present invention may refer to the description of the lightweight AMF device in fig. 16 or fig. 17, which is not described herein again. Except that the LMF device includes a processor for performing the steps performed by the LMF device in the above-described embodiments.
From the above description of embodiments, it will be apparent to those skilled in the art that the foregoing functional unit divisions are merely illustrative for convenience and brevity of description. In practical applications, the above-mentioned function allocation may be performed by different functional units, i.e. the internal structure of the device is divided into different functional units, as needed, to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
The embodiment of the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, when the computer executes the instructions, the computer executes each step in the method flow shown in the method embodiment.
Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the communication method of the method embodiments described above.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: electrical connections having one or more wires, portable computer diskette, hard disk. Random access Memory (Random Access Memory, RAM), read-Only Memory (ROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium suitable for use by a person or persons of skill in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In embodiments of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Since the apparatus, the device computer readable storage medium, and the computer program product in the embodiments of the present invention can be applied to the above-mentioned method, the technical effects that can be obtained by the apparatus, the device computer readable storage medium, and the computer program product can also refer to the above-mentioned method embodiments, and the embodiments of the present invention are not described herein again.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A communication method, characterized in that the communication method is applied to lightweight access and mobility management function (AMF) equipment in a campus communication system, wherein the campus communication system further comprises public network AMF equipment, location Management Function (LMF) equipment and base station equipment; the method comprises the following steps:
receiving a measurement request message sent by the LMF equipment; the measurement request message is used for requesting positioning measurement data of the measurement terminal; the measurement request message is generated by the LMF equipment in response to the positioning request message sent by the public network AMF equipment, the transmission protocol of the measurement request message corresponds to the terminal positioning service, and the transmission protocol corresponding to the terminal positioning service comprises a long term evolution positioning protocol (LPP) or a new air interface positioning protocol copy (NRPPa);
Transmitting the measurement request message to the base station device, so that the base station device transmits a measurement response message to the lightweight AMF device;
receiving the measurement response message sent by the base station equipment, and sending the measurement response message to the LMF equipment; the measurement response message carries the positioning measurement data of the terminal, and is used for requesting the LMF equipment to determine a positioning result of the terminal based on the positioning measurement data;
and receiving the positioning result sent by the LMF equipment and sending the positioning result to the server.
2. A communication method, characterized in that the communication method is applied to Location Management Function (LMF) equipment in a park communication system, wherein the park communication system further comprises public network (AMF) equipment, lightweight access and mobility management function (AMF) equipment; the method comprises the following steps:
responding to the positioning request message sent by the public network AMF equipment, and generating a message to be sent;
under the condition that the transmission protocol of the message to be sent corresponds to the terminal positioning service, determining the message to be sent as a measurement request message, and sending the measurement request message to the lightweight AMF equipment; the measurement request message is used for requesting positioning measurement data of the measurement terminal;
Receiving a measurement response message sent by the lightweight AMF equipment; the measurement response message carries the positioning measurement data of the terminal;
and determining a positioning result of the terminal based on the positioning measurement data, and sending the positioning result to the lightweight AMF equipment.
3. The communication method according to claim 2, characterized in that the transmission protocol corresponding to the terminal positioning service comprises a long term evolution positioning protocol LPP or a new air interface positioning protocol replica NRPPa.
4. A campus communication system, characterized in that the campus communication system comprises a lightweight access and mobility management function AMF device, a location management function LMF device, and a base station device;
the lightweight AMF equipment is connected with the base station equipment and the LMF equipment respectively;
the lightweight AMF device is for performing the communication method of claim 1, and the LMF device is for performing the communication method of claim 2 or 3.
5. The lightweight access and mobility management function (AMF) device is characterized by being deployed in a park communication system, wherein the park communication system further comprises public network (AMF) devices, location Management Function (LMF) devices and base station devices; the lightweight AMF device comprises a receiving unit and a sending unit;
The receiving unit is used for receiving the measurement request message sent by the LMF equipment; the measurement request message is used for requesting positioning measurement data of the measurement terminal; the measurement request message is generated by the LMF equipment in response to the positioning request message sent by the public network AMF equipment, the transmission protocol of the measurement request message corresponds to the terminal positioning service, and the transmission protocol corresponding to the terminal positioning service comprises a long term evolution positioning protocol (LPP) or a new air interface positioning protocol copy (NRPPa);
the sending unit is configured to send the measurement request message to the base station device, so that the base station device sends a measurement response message to the lightweight AMF device;
the receiving unit is further configured to receive a measurement response message sent by the base station device; the measurement response message carries positioning measurement data of a terminal, and is used for requesting the LMF equipment to determine a positioning result of the terminal based on the positioning measurement data;
the sending unit is further configured to send the measurement response message to the LMF device;
the receiving unit is further configured to receive the positioning result sent by the LMF device;
The sending unit is further configured to send the positioning result to the server.
6. The Location Management Function (LMF) device is characterized by being deployed in a park communication system, wherein the park communication system further comprises public network (AMF) devices, lightweight access and mobility management function (AMF) devices; the LMF device comprises a generating unit, a receiving unit, a determining unit and a transmitting unit;
the generating unit is used for responding to the positioning request message sent by the public network AMF equipment and generating a message to be sent;
the determining unit is configured to determine the message to be sent as a measurement request message when the transmission protocol of the message to be sent corresponds to the terminal positioning service;
the sending unit is used for sending the measurement request message to the lightweight AMF equipment; the measurement request message is used for requesting positioning measurement data of the measurement terminal;
the receiving unit is used for receiving the measurement response message sent by the lightweight AMF equipment; the measurement response message carries positioning measurement data of the terminal;
the determining unit is further configured to determine a positioning result of the terminal based on the positioning measurement data;
The sending unit is further configured to send the positioning result to the lightweight AMF device.
7. A lightweight access and mobility management function, AMF, device, characterized in that the lightweight AMF device comprises a memory and a processor;
the memory is coupled to the processor;
the memory is used for storing computer program codes, and the computer program codes comprise computer instructions;
the lightweight AMF device, when the processor executes the computer instructions, performs the communication method of claim 1.
8. A location management function, LMF, device, the LMF device comprising a memory and a processor;
the memory is coupled to the processor;
the memory is used for storing computer program codes, and the computer program codes comprise computer instructions;
the LMF device, when executing the computer instructions, performs the communication method of claim 2 or 3.
9. A computer readable storage medium having instructions stored therein, which when run on a lightweight access and mobility management function, AMF, device is caused to perform the communication method of claim 1.
10. A computer readable storage medium having instructions stored therein, which when run on a location management function, LMF, device is caused to perform the communication method of claim 2 or 3.
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