CN114900792A

CN114900792A - Communication method, terminal, base station device, campus communication system, and storage medium

Info

Publication number: CN114900792A
Application number: CN202210669661.8A
Authority: CN
Inventors: 刘英男; 李福昌
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-08-12

Abstract

The invention provides a communication method, a terminal, base station equipment, a park communication system and a storage medium, relates to the technical field of communication, and aims to eliminate the risk of positioning data leakage and ensure the safety of terminal position information. The communication method comprises the following steps: the base station equipment sends a plurality of public land mobile network identifications (PLMN IDs) to the terminal and receives a connection establishment completion message sent by the terminal. The PLMN IDs comprise a PLMNID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment; the connection establishment completion message includes a target PLMN ID in the PLMNIDs, the connection establishment completion message is generated by the terminal under the condition that the target PLMN ID exists in the PLMNIDs, and the target PLMN ID is a PLMN ID pre-configured in the terminal. Further, the base station device accesses the terminal to the target AMF device corresponding to the target PLMN ID.

Description

Communication method, terminal, base station device, campus communication system, and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication method, a terminal, a base station device, a campus communication system, and a storage medium.

Background

With the popularization of mobile communication networks and the development of fifth generation mobile communication technology (5G) positioning technology, 5G networks can provide precise positioning services. Under the current communication network architecture, a campus scene of industry application is shown in fig. 1, and when a terminal needs to be positioned, positioning data of the terminal is transmitted to positioning application in the campus through a public network of a mobile communication network.

Many industries have higher privacy requirements for terminal location information in a campus. And in the positioning process of the terminal, the positioning data can be transmitted to a public network, so that the risk of leakage of the positioning data exists, and the requirement of a user cannot be met.

Disclosure of Invention

The invention provides a communication method, a terminal, base station equipment, a park communication system and a storage medium, which are used for eliminating the risk of positioning data leakage and ensuring the safety of terminal position information.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, a communication method is provided, where the communication method is applied to a base station device located in a campus communication system, and the campus communication system further includes a local access and mobility management function (AMF) device. The communication method comprises the following steps: the base station device sends a plurality of public land mobile network identifiers (PLMN IDs) to the terminal, and receives a connection establishment completion message sent by the terminal. The plurality of PLMN IDs comprise a PLMN ID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment; the connection establishment completion message includes a target PLMN ID in the plurality of PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that the target PLMN ID exists in the plurality of PLMNs, and the target PLMN ID is a PLMN ID pre-configured in the terminal. Further, the base station device accesses the terminal to the target AMF device corresponding to the target PLMN ID.

The invention provides a communication method, under the campus communication system provided by the invention, a base station device connects a positioning terminal in a campus to a local AMF device in the campus, so that positioning measurement and feedback of a positioning result are forwarded in the devices in the campus in the process of carrying out positioning service on the terminal, the risk of positioning data leakage caused by positioning data transmission through the AMF device of a public network is eliminated, and the safety of terminal position information is ensured.

In one possible design, the base station device sends multiple PLMN IDs to the terminal, and further includes: a base station device sends a system information block (SIB 1) message to a terminal; the SIB1 message includes multiple PLMN IDs. In the design, a specific implementation manner that the base station device sends a plurality of PLMN IDs to the terminal is implemented, so that the terminal determines whether the operator network supported by the base station device can provide normal network services.

In one possible design, the base station device is connected to the local AMF device through an N2 interface; under the condition that the target AMF equipment is the local AMF equipment, accessing the terminal to the target AMF equipment corresponding to the target PLMN ID, wherein the method comprises the following steps: and the base station equipment accesses the terminal to the local AMF equipment through an N2 interface. How the base station equipment accesses the terminal into the local AMF equipment is realized in the design, so that the positioning data is only transmitted in a park in the subsequent terminal positioning process, and the risk of positioning data leakage is eliminated.

In a second aspect, the present invention provides a communication method, which is applied to a terminal. The terminal receives the multiple PLMN IDs sent by the base station equipment, generates a connection establishment completion message under the condition that the target PLMN IDs exist in the multiple PLMN IDs, and sends the connection establishment completion message to the base station equipment. The plurality of PLMN IDs comprise a PLMN ID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment; the connection establishment completion message includes a target PLMN ID, which is a PLMN ID pre-configured in the terminal. Further, the terminal accesses the target AMF device corresponding to the target PLMN ID.

The invention provides a communication method, under the campus communication system provided by the invention, a positioning terminal in a campus is accessed to local AMF (advanced metering framework) equipment in the campus through base station equipment, so that positioning measurement and feedback of a positioning result can be forwarded in the equipment in the campus in the process of carrying out positioning service on the terminal, the risk of positioning data leakage caused by positioning data transmission through the AMF equipment of a public network is eliminated, and the safety of terminal position information is ensured.

In one possible design, the communication method further includes: the terminal determines a target PLMN ID according to configuration information in a Universal Subscriber Identity Module (USIM) of the terminal. Further, the terminal determines whether the target PLMN ID exists from the plurality of PLMN IDs based on the target PLMN ID. The design realizes that whether the operator network supported by the base station equipment can provide normal network service for the terminal or not is determined.

In a third aspect, the present invention provides a campus communication system. The campus communication system includes a base station device for performing the communication method in the first aspect and a terminal for performing the communication method in the second aspect.

In one possible design, the park communication system further includes a local AMF device, a public network AMF device, a Unified Data Management (UDM) device, a Location Management Function (LMF) device, a mobile location center (GMLC) device, and a location application. The system comprises a base station device, a terminal, a local AMF device, an LMF device, a GMLC device and a positioning application, wherein the base station device, the terminal, the local AMF device, the LMF device, the GMLC device and the positioning application are deployed in a campus network; public network AMF equipment and UDM equipment are deployed in a public network.

In a fourth aspect, a base station device is deployed in a campus communication system, where the campus communication system further includes a local AMF device. The base station device includes a transmitting unit, a receiving unit, and a processing unit. The sending unit is used for sending a plurality of PLMN IDs to the terminal, wherein the PLMN IDs comprise a PLMN ID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment; the receiving unit is used for receiving a connection establishment completion message sent by the terminal; the connection establishment completion message comprises a target PLMN ID in the PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that the target PLMN ID exists in the PLMNs, and the target PLMN ID is a pre-configured PLMN ID in the terminal; the processing unit is used for accessing the terminal to the target AMF equipment corresponding to the target PLMN ID.

In a possible design, the sending unit is specifically configured to send an SIB1 message to the terminal; the SIB1 message includes multiple PLMN IDs.

In one possible design, the base station device is connected to the local AMF device via an N2 interface. In the case that the target AMF device is a local AMF device, the processing unit is specifically configured to access the terminal to the local AMF device through an N2 interface.

In a fifth aspect, a terminal is provided and includes a receiving unit, a generating unit, a transmitting unit, and a processing unit. The receiving unit is used for receiving a plurality of PLMN IDs sent by the base station equipment, wherein the PLMN IDs comprise a PLMN ID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment; the generation unit is used for generating a connection establishment completion message under the condition that the target PLMN ID exists in the plurality of PLMN IDs; the connection establishment completion message comprises a target PLMN ID, and the target PLMN ID is a PLMN ID configured in the terminal in advance; the sending unit is used for sending a connection establishment completion message to the base station equipment; and the processing unit is used for accessing the target AMF equipment corresponding to the target PLMN ID.

In one possible design, the terminal further includes a determining unit. The determining unit is used for determining the target PLMN ID according to the configuration information in the Universal Subscriber Identity Module (USIM) of the terminal. The determining unit is further configured to determine whether the target PLMN ID exists from the plurality of PLMN IDs based on the target PLMN ID.

In a sixth aspect, a base station device is provided, the base station device comprising a memory and a processor; a memory for storing computer program code comprising computer instructions which, when executed by the processor, perform the communication method as in the first aspect, is coupled to the processor.

In a seventh aspect, a terminal is provided that includes a memory and a processor; a memory for storing computer program code comprising computer instructions which, when executed by the processor, cause the terminal to perform the communication method as in the second aspect is coupled to the processor.

In an eighth aspect, there is provided a computer-readable storage medium having stored therein instructions that, when run on a base station apparatus, cause the base station apparatus to perform the communication method as in the first aspect.

A ninth aspect provides a computer-readable storage medium having stored therein instructions which, when run on a terminal, cause the terminal to perform a communication method as in the second aspect.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of a terminal accessing an AMF device and positioning the terminal according to an embodiment of the present invention;

figure 3 is a first block diagram of a campus communication system according to an embodiment of the present invention;

fig. 4 is a first flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a campus communication system according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 7 is a third schematic flowchart of a communication method according to an embodiment of the present invention;

fig. 8 is a schematic flowchart of terminal positioning according to an embodiment of the present invention;

fig. 9 is a first schematic structural diagram of a base station device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a base station device according to an embodiment of the present invention;

fig. 12 is a third schematic structural diagram of a base station device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the present invention, "/" means "or" unless otherwise specified, for example, a/B may mean a or B. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. Further, "at least one" or "a plurality" means two or more. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily limit the difference.

In the prior art, a terminal accesses a base station device and a positioning process of the terminal is shown in fig. 2, where the terminal sends an initial attach request to the base station device to request access to a public network AMF device of a public network. In the positioning process of the terminal, a terminal measurement request containing terminal positioning data and a terminal position result can be transmitted through the public network AMF device, and the public network AMF device is arranged in a public network, so that the terminal positioning data faces the risk of leaking terminal position information in the transmission process.

It should be noted that, as shown in fig. 2, the process of accessing the base station device by the terminal and positioning the terminal includes the following steps:

s1, the terminal sends an initial attachment request to the base station equipment;

s2, the base station equipment sends an initial attachment request to the AMF equipment;

s3, the AMF equipment sends an initial attachment response to the base station equipment;

and S4, the base station equipment sends an initial attachment response to the terminal to finish the access of the terminal to the base station equipment.

S5, the positioning application in the server sends a positioning service request to a mobile location center (GMLC) device;

s6, the GMLC device sends a positioning signing data request to a Unified Data Management (UDM) device;

s7, the UDM device sends a response message based on the positioning subscription data request to the GMLC device;

s8, the GMLC equipment sends a positioning request to the AMF equipment;

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 device sends the terminal position result to the AMF device;

s15, the AMF device sends the terminal position result to the GMLC device;

and S16, the GMLC equipment sends the terminal position result to the positioning application in the server to complete the positioning of the terminal.

In order to solve the above problems in the prior art, an embodiment of the present invention provides a campus communication system, as shown in fig. 3, a campus communication system 20 includes a base station device 21, a terminal 22, a local AMF device 23, an LMF device 26, a GMLC device 27, a location application 28, a public network AMF device 24, and a UDM device 25, which are deployed in a campus network.

As shown in fig. 3, the base station device 21 is connected to the terminal 22, the local AMF device and the public network AMF device, the local AMF device 23 is connected to the UDM device 25, the LMF device 26 and the GMLC device 27, the public network AMF device 24 is connected to the UDM device 25, the LMF device 26 and the GMLC device 27, and the GMLC device 27 is further connected to the positioning application 28. In the campus communication system 20, the connections between the devices may be wired or wireless, 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 local AMF device 23 or the public network AMF device 24.

The base station device 21 may also be configured to determine PLMN IDs corresponding to the local AMF device 23 and the public network AMF device 24 connected thereto, and send the PLMN IDs corresponding to the local AMF device 23 and the public network AMF device 24 to the terminal 22 to be accessed.

The base station device 21 may also be configured to receive a terminal measurement request sent by the local AMF device 23 or the public network AMF device 24, and report terminal measurement data to the corresponding AMF device after receiving the terminal measurement request.

The terminal 22 can access the local AMF device 23 or the public network AMF device 24 through the base station device 21.

The terminal 22 may also be configured to report terminal measurement data to the corresponding AMF device through the base station device 21 after receiving, through the base station device 21, a terminal measurement request sent by the local AMF device 23 or the public network AMF device 24.

The local AMF device 23 and the public network AMF device 24 may be configured to implement the same function, and the local AMF device 23 is different from the public network AMF device 24 in that: the local AMF facility 23 is provided in a campus network and the public network AMF facility 24 is provided in a public network.

Optionally, taking the local AMF device 23 as an example, the local AMF device 23 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 22 is successfully accessed.

The local AMF device 23 may also be configured to send a terminal location request to the LMF device 26 in response to the location request sent by the GMLC device 27; in response to the terminal measurement request sent by LMF device 26, sending a terminal measurement request to base station device 21; transmitting the terminal measurement data to the LMF device 26 in response to the terminal measurement data transmitted by the base station device 21; the terminal location result is sent to the GMLC device 27 in response to the terminal location result sent by the LMF device 26.

The UDM device 25 may be configured to determine whether the location-initiating location application 28 is a registered application in response to a location subscription data request sent by the GMLC device 27, and to feed back the determination result to the GMLC device 27.

The LMF device 26 may be configured to send a terminal measurement request to the corresponding AMF device after receiving the terminal positioning request sent by the local AMF device 23 or the public network AMF device 24, and instruct the AMF device to obtain terminal measurement data.

The LMF device 26 may also be configured to send a terminal location result to the corresponding AMF device after receiving the terminal measurement data sent by the local AMF device 23 or the public network AMF device 24.

The GMLC device 27 may be configured to, after receiving the location service request sent by the location application 28, send a location subscription data request to the UDM device 25 to verify whether the location application 28 is a registered application.

The GMLC device 27 may be further configured to generate a mobile-terminated location request (MT-LR) after the location application 28 successfully verifies the location request, and send the MT-LR request to the local AMF device 23 or the public network AMF device 24, so as to instruct the corresponding AMF device to locate the terminal.

The GMLC device 27 may also be configured to send the terminal location to the location application 28 initiating the location after receiving the terminal location result sent by the local AMF device 23 or the public network AMF device 24.

Fig. 4 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. A communication method provided by an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 4, the communication method provided by the embodiment of the present invention is applied to the campus communication system 20, which includes S301 to S305.

S301, the base station equipment sends a plurality of PLMN IDs to the terminal.

The plurality of PLMN IDs comprise a PLMN ID corresponding to the local AMF device and a PLMN ID corresponding to the public network AMF device.

As a possible implementation manner, the base station device obtains the PLMN ID of the local AMF device connected thereto and the PLMN ID of the public network AMF device. Further, the base station device sends a plurality of PLMN IDs including a PLMN ID of the local AMF device and a PLMN ID of the public network AMF device to the terminal.

In some embodiments, the base station device will configure the SIB1 message based on the multiple PLMN IDs, which are broadcast to the terminal by the respective cells.

It should be noted that, in section 6.2.2Message definitions of third generation partnership project (3 GPP) TS 36.331v8.5.0, the cell broadcast SIB1 Message is defined as follows:

for example, as shown in fig. 5, a local AMF device in a campus is an AMF a, a public network AMF device outside the campus is an AMF B, where a PLMN ID corresponding to the local AMF device AMF a is a PLMN a, a PLMN ID corresponding to the public network AMF device AMF B is a PLMN B, and a base station device is a shared base station device of the PLMN a and the PLMN B. In this scenario, the base station device configures an SIB1 message, which includes the following PLMN information:

in this way, the base station device may send the identifier PLMN ID corresponding to the local AMF device and the public network AMF device connected thereto to the terminal, so that the terminal may select the AMF device for access in the subsequent process.

Correspondingly, the terminal receives the plurality of PLMN IDs sent by the base station equipment.

S302, the terminal determines whether a target PLMN ID exists in the plurality of PLMN IDs.

And the target PLMN ID is a PLMN ID pre-configured in the terminal.

Optionally, the target PLMN ID may be pre-configured in the USIM in the terminal. Specifically, the operation and maintenance personnel configure the PLMN ID of the positioning terminal in the campus as the PLMN ID corresponding to the local AMF device, and configure the PLMN IDs of other terminals except the positioning terminal in the campus as the PLMN ID corresponding to the public network AMF device.

As a possible implementation manner, the terminal acquires the target PLMN ID of the terminal according to the configuration information in the USIM. Further, based on the target PLMN ID, the terminal queries whether the target PLMN ID exists from the acquired multiple PLMN IDs.

It should be noted that, if there is a target PLMN ID in the multiple PLMN IDs, it indicates that the terminal may establish a connection with the core network device through the base station device that transmits the multiple PLMN IDs; and if the target PLMN ID does not exist, the indication indicates that the terminal cannot establish connection with the core network equipment through the base station equipment.

S303, the terminal generates a connection establishment completion message under the condition that the target PLMN IDs exist in the PLMNs.

The connection establishment completion message comprises a target PLMN ID, and the target PLMN ID is used for indicating the core network equipment which is selected by the terminal and establishes the connection.

As a possible implementation manner, under the condition that the target PLMN ID exists in the multiple PLMNs, the terminal selects the AMF device to be accessed, and generates a connection establishment completion message carrying the target PLMN ID.

In some embodiments, if the target PLMN ID of the terminal is configured to be the PLMN ID corresponding to the local AMF device, the terminal determines that the AMF device to be accessed is the local AMF device, generates a connection establishment completion message carrying the PLMN ID corresponding to the local AMF device, and indicates the base station device to access the local AMF device.

If the target PLMN ID of the terminal is configured to be the PLMN ID corresponding to the public network AMF equipment, the terminal determines that the AMF equipment to be accessed is the public network AMF equipment, generates a connection establishment completion message carrying the PLMN ID corresponding to the public network AMF equipment, and indicates the base station equipment to access the public network AMF equipment.

It can be understood that, since the PLMN ID of the local AMF device is different from the PLMN ID of the public network AMF device, the PLMN ID of the positioning terminal in the campus is configured to be the PLMN ID corresponding to the local AMF device. Therefore, if the terminal is a positioning terminal in the campus, in the process of establishing connection between the subsequent terminal and the AMF device, the base station device accesses the positioning terminal in the campus into the local AMF device based on the target PLMN ID, and then the positioning data is only transmitted in the campus in the subsequent positioning process of the terminal, so that the risk that the positioning data of the terminal is leaked by the public network AMF device of the public network through the public network is eliminated.

S304, the terminal sends a connection establishment completion message to the base station equipment.

Correspondingly, the base station equipment receives a connection establishment completion message sent by the terminal.

In some embodiments, after receiving the connection establishment completion message, the base station device determines, according to the target PLMN ID, the target AMF device corresponding to the PLMN ID to select the AMF device to be accessed for the terminal.

S305, the base station equipment accesses the terminal to the target AMF equipment corresponding to the target PLMN ID.

As a possible implementation manner, the base station device selects an interface corresponding to the target PLMN ID according to the target PLMN ID of the terminal, and accesses the target AMF device.

It should be noted that the base station device is connected to the AMF device through an N2 interface.

Illustratively, if the base station device is connected to the local AMF device AMF a through the first N2 interface, the PLMN ID of the AMF a is PLMN a; the base station device is further connected with a public network AMF device AMF B through a second N2 interface, and the PLMN ID of the AMF B is PLMN B. Because the PLMN ID of the positioning terminal in the campus is configured to be the PLMN ID corresponding to the local AMF device, that is, the PLMN ID of the positioning terminal in the campus is PLMN a, correspondingly, other terminals except the positioning terminal in the campus are configured to be PLMN B.

In this way, if the terminal is a positioning terminal in the campus, the base station device determines that the target PLMN ID of the terminal is PLMN a from the connection establishment completion message. Further, the base station device determines that the target AMF device corresponding to the PLMN a is the AMF a, and then selects the first N2 interface to connect with the local AMF device AMF a, and connects the location terminal in the campus to the AMF device AMF a in the campus, thereby completing the subsequent terminal access AMF process. All services and positioning processes after the terminal is accessed into the AMF equipment are realized based on the accessed local AMF equipment in the park.

And if the terminal is other terminals of the positioning terminal in the park, the base station equipment determines that the target PLMN ID of the terminal is PLMN B from the connection establishment completion message. Further, the base station device determines that the target AMF device corresponding to the PLMN B is the AMF B, and then selects the second N2 interface to connect the public network AMF device AMF B, and connects the positioning terminal in the campus to the public network AMF device AMF B outside the campus, thereby completing the subsequent terminal access AMF process. All services and positioning processes after the terminal is accessed into the AMF equipment are realized based on the accessed public network AMF equipment outside the park.

It can be understood that, by setting the local AMF device in the campus and configuring the PLMN ID of the location terminal in the campus as the PLMN ID corresponding to the local AMF device, the location terminal in the campus can select the local AMF device deployed in the campus to access when completing the access procedure of the core network. Therefore, the positioning terminal in the park can carry out positioning in the positioning process, the positioning data is only transmitted in the park, and the risk that the positioning data is leaked when the positioning data is transmitted through a public network is eliminated.

Hereinafter, the operation performed by the base station device will be described by taking an example in which the above-described communication method is applied to the base station device in the campus communication system, and as shown in fig. 6, the communication method according to the embodiment of the present invention further includes S401 to S403.

S401, the base station equipment sends a plurality of PLMN IDs to the terminal.

It should be noted that, specifically, how the base station device sends multiple PLMN IDs to the terminal may refer to the record in step S301 in the embodiment of the present invention, and details are not described here.

S402, the base station equipment receives a connection establishment completion message sent by the terminal.

The connection establishment completion message comprises a target PLMN ID in the PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that the target PLMN ID exists in the PLMNs, and the target PLMN ID is a pre-configured PLMN ID in the terminal.

It should be noted that, how the base station device specifically receives the connection establishment completion message sent by the terminal may refer to the record in step S304 in the foregoing embodiment of the present invention, and details are not described here again.

S403, the base station equipment accesses the terminal to the target AMF equipment corresponding to the target PLMN ID.

It should be noted that, how the base station device accesses the terminal to the target AMF device corresponding to the target PLMN ID specifically may refer to the record in step S305 in the foregoing embodiment of the present invention, and details are not described here again.

Hereinafter, the operation performed by the terminal will be described by taking the above-described communication method as an example of being applied to the terminal in the campus communication system, and as shown in fig. 7, the communication method according to the embodiment of the present invention further includes S501 to S503.

S501, the terminal receives a plurality of PLMN IDs sent by the base station equipment.

It should be noted that, specifically, how the terminal receives multiple PLMN IDs sent by the base station device may refer to the record in step S301 in the embodiment of the present invention, and details are not described here.

S502, the terminal determines whether a target PLMN ID exists in the plurality of PLMN IDs.

It should be noted that, how the terminal specifically determines whether the target PLMN ID exists in the multiple PLMN IDs may refer to the record in the step S302 in the embodiment of the present invention, and details are not described here.

S503, the terminal generates a connection establishment completion message under the condition that the target PLMN ID exists in the plurality of PLMN IDs.

The connection establishment completion message comprises a target PLMN ID, and the target PLMN ID is a PLMN ID pre-configured in the terminal.

It should be noted that, how the terminal specifically generates the connection establishment completion message may refer to the record in step S303 in the embodiment of the present invention, and details are not described here again.

S504, the terminal sends a connection establishment completion message to the base station equipment.

It should be noted that, how the terminal specifically sends the connection establishment completion message to the base station device may refer to the record in step S304 in the foregoing embodiment of the present invention, and details are not described here again.

And S505, the terminal accesses the target AMF equipment corresponding to the target PLMN ID.

It should be noted that, how the terminal accesses the target AMF device corresponding to the target PLMN ID specifically may refer to the record in step S305 in the embodiment of the present invention, and details are not described here again.

In a design, taking a terminal 22 as a positioning terminal in a campus as an example, in the campus communication system 20 provided in the embodiment of the present invention, after the terminal 22 accesses the local AMF device 23 through the base station device 21, a subsequent positioning process for the terminal is shown in fig. 8.

S601, the location application sends a location service request for the terminal to the GMLC device.

The location service request comprises the identifier of the location application and the identifier of the terminal.

S602, 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.

S603, the UDM device sends the subscription data of the location application and the subscription data of the terminal to the GMLC device.

And S604, the GMLC equipment sends a positioning request to the local AMF equipment.

It should be noted that after acquiring the subscription data of the location application and the subscription data of the terminal, the GMLC device determines whether the location application has a location right for the terminal, and sends a location request to the local AMF device when the location application has the location right for the terminal.

S605, the local AMF equipment sends a terminal positioning request to the LMF equipment.

And S606, the LMF equipment sends a terminal measurement request to the local AMF equipment.

S607, the local AMF device forwards the terminal measurement request to the base station device.

The terminal measurement request is used for instructing the base station equipment to measure the position information of the terminal.

And S608, the base station equipment sends the terminal measurement data to the local AMF equipment.

And S609, the local AMF equipment forwards the terminal measurement data to the LMF equipment.

And S610, after receiving the terminal measurement data, the LMF device calculates to generate a terminal position result and sends the terminal position result to the local AMF device.

S611, the local AMF device forwards the terminal position result to the GMLC device.

And S612, the GMLC equipment sends the obtained terminal position result to a positioning application requesting to position the terminal.

In some embodiments, if the terminal 22 is a terminal other than a positioning terminal in the campus, the local AMF device 23 in the communication methods S601 to S612 is replaced with the public network AMF device 24, and the public network AMF device 24 performs a corresponding action.

The invention provides a communication method, a terminal, base station equipment, a park communication system and a storage medium, wherein in the park communication system provided by the invention, a positioning terminal in a park is connected to local AMF (advanced metering framework) equipment in the park through the base station equipment, so that positioning measurement and feedback of a positioning result can be forwarded in the equipment in the park in the process of performing positioning service on the terminal, the risk of positioning data leakage caused by the transmission of the positioning data through the AMF equipment of a public network is eliminated, and the safety of terminal position information is ensured.

Fig. 9 is a schematic structural diagram of a base station device according to an embodiment of the present invention, where the base station device is configured to execute the foregoing communication method. As shown in fig. 9, the base station apparatus 70 includes a transmitting unit 701, a receiving unit 702, and a processing unit 703.

A sending unit 701, configured to send a plurality of PLMN IDs to a terminal. The plurality of PLMN IDs include a PLMN ID corresponding to the local AMF device and a PLMN ID corresponding to the public network AMF device. For example, as shown in fig. 6, the transmitting unit 701 may be configured to execute S401.

A receiving unit 702, configured to receive a connection setup complete message sent by a terminal. The connection establishment completion message includes a target PLMN ID in the plurality of PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that the target PLMN ID exists in the plurality of PLMNs, and the target PLMN ID is a PLMN ID pre-configured in the terminal. For example, as shown in fig. 6, the receiving unit 702 may be configured to perform S402.

A processing unit 703 is configured to access the terminal to a target AMF device corresponding to the target PLMN ID. For example, as shown in fig. 6, the processing unit 703 may be configured to execute S403.

Optionally, as shown in fig. 9, in the base station device 70 provided in the embodiment of the present invention, the sending unit 701 is specifically configured to send an SIB1 message to the terminal; the SIB1 message includes multiple PLMN IDs.

Optionally, as shown in fig. 9, in the base station device 70 provided in the embodiment of the present invention, the processing unit 703 is specifically configured to access the terminal to the local AMF device through an N2 interface.

Fig. 10 is a schematic structural diagram of a terminal 80 according to an embodiment of the present invention, which is configured to execute the above communication method. As shown in fig. 10, the terminal 80 includes a receiving unit 801, a generating unit 802, a transmitting unit 803, and a processing unit 804.

A receiving unit 801, configured to receive multiple PLMN IDs sent by a base station device. The plurality of PLMN IDs include a PLMN ID corresponding to the local AMF device and a PLMN ID corresponding to the public network AMF device. For example, as shown in fig. 7, the receiving unit 801 may be configured to perform S501.

A generating unit 802, configured to generate a connection setup complete message when it is determined that the target PLMN ID exists in the multiple PLMN IDs. The connection establishment completion message includes a target PLMN ID, which is a PLMN ID pre-configured in the terminal. For example, as shown in fig. 7, the generating unit 802 may be configured to perform S502.

A sending unit 803, configured to send a connection setup complete message to the base station apparatus. For example, as shown in fig. 7, the sending unit 803 may be configured to execute S503.

The processing unit 804 is configured to access a target AMF device corresponding to the target PLMN ID. For example, as shown in fig. 7, the processing unit 804 may be configured to execute S504.

Optionally, as shown in fig. 10, the terminal 80 provided in the embodiment of the present invention further includes a determining unit 805.

A determining unit 805, configured to determine the target PLMN ID according to configuration information in the USIM of the terminal.

The determining unit 805 is further configured to determine whether the target PLMN ID exists from the plurality of PLMN IDs based on the target PLMN ID.

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 base station device. The base station device is configured to perform the communication method performed by the base station device in the foregoing embodiment. As shown in fig. 11, the base station apparatus 90 includes a processor 901, a memory 902, and a bus 903. The processor 901 and the memory 902 may be connected by a bus 903.

The processor 901 is a control center of the base station device, and may be a single processor or a collective term for multiple processing elements. For example, the processor 901 may be a Central Processing Unit (CPU), other general-purpose processors, or the like. Wherein a general purpose processor may be a microprocessor or any conventional processor or the like.

For one embodiment, processor 901 may include one or more CPUs, such as CPU 0 and CPU 1 shown in fig. 11.

The memory 902 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, 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 902 may be separate from the processor 901, and the memory 902 may be connected to the processor 901 via the bus 903 for storing instructions or program code. The processor 901 can implement the communication method provided by the embodiment of the present invention when calling and executing the instructions or program codes stored in the memory 902.

In another possible implementation, the memory 902 may also be integrated with the processor 901.

The bus 903 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 11, but this is not intended to represent only one bus or type of bus.

Note that the configuration shown in fig. 11 does not constitute a limitation on the base station apparatus 90. In addition to the components shown in fig. 11, the base station apparatus 90 may include more or less components than those shown in fig. 11, or combine some of the components, or a different arrangement of components.

As an example, in conjunction with fig. 9, the functions implemented by the transmitting unit 701, the receiving unit 702, and the processing unit 703 in the base station apparatus 70 are the same as those of the processor 901 in fig. 11.

Optionally, as shown in fig. 11, the base station device provided in the embodiment of the present invention may further include a communication interface 904.

A communication interface 904 for connecting with other devices through a communication network. The communication network may be an ethernet network, a radio access network, a Wireless Local Area Network (WLAN), etc. The communication interface 904 may include a receiving unit for receiving data and a transmitting unit for transmitting data.

In one design, in the base station device provided in the embodiment of the present invention, the communication interface may be further integrated in the processor.

Fig. 12 shows another hardware configuration of the base station apparatus in the embodiment of the present invention. As shown in fig. 12, the base station apparatus 100 may include a processor 1001 and a communication interface 1002. Processor 1001 is coupled to communication interface 1002.

The functions of the processor 1001 may refer to the description of the processor 901 above. The processor 1001 also has a memory function, and the function of the memory 902 can be referred to.

The communication interface 1002 is used to provide data to the processor 1001. The communication interface 1002 may be an internal interface of the base station device, or an external interface (corresponding to the communication interface 904) of the base station device.

It is to be noted that the configuration shown in fig. 12 does not constitute a limitation of the base station apparatus, and the base station apparatus 100 may include more or less components than those shown in fig. 12, or combine some components, or arrange different components, in addition to the components shown in fig. 12.

Meanwhile, the schematic structural diagram of hardware of the terminal provided in the embodiment of the present invention may also refer to the description of the base station device in fig. 11 or fig. 12, which is not described herein again. Except that the terminal comprises a processor for performing the steps performed by the terminal in the above-described embodiments.

Through the above description of the embodiments, it is clear for a person skilled in the art that, for convenience and simplicity of description, only the division of the above functional units is illustrated. In practical applications, the above function allocation can be performed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a computer, the computer executes each step in the method flow shown in the above 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 above-described method embodiments.

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 any combination thereof. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, and a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read-Only Memory (EPROM), registers, a hard disk, an optical fiber, a portable Compact disk Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium, in any suitable combination, or as appropriate 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. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). In embodiments of the 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 readable storage medium, and the computer program product in the embodiments of the present invention may be applied to the method described above, for technical effects that can be obtained by the apparatus, the apparatus readable storage medium, and the computer program product, reference may also be made to the method embodiments described above, and details of the embodiments of the present invention are not repeated herein.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A communication method, applied to a base station device located in a campus communication system, wherein the campus communication system further includes a local access and mobility management function, AMF, device; the method comprises the following steps:

sending a plurality of public land mobile network identification (PLMN IDs) to a terminal, wherein the PLMN IDs comprise a PLMN ID corresponding to the local AMF equipment and a PLMN ID corresponding to the public network AMF equipment;

receiving a connection establishment completion message sent by the terminal; the connection establishment completion message includes a target PLMN ID among the plurality of PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that it is determined that the target PLMN ID exists among the plurality of PLMNs, and the target PLMN ID is a PLMN ID pre-configured in the terminal;

and accessing the terminal to the target AMF equipment corresponding to the target PLMN ID.

2. The communication method according to claim 1, wherein the sending the plurality of PLMN IDs to the terminal comprises:

transmitting a system information block SIB1 message to the terminal; the SIB1 message includes the plurality of PLMN IDs.

3. The communication method according to claim 1 or 2, wherein the base station device is connected to the local AMF device via an N2 interface; if the target AMF device is the local AMF device, the accessing the terminal to the target AMF device corresponding to the target PLMN ID includes:

and accessing the terminal to the local AMF device through the N2 interface.

4. A communication method, applied to a terminal, the method comprising:

receiving a plurality of public land mobile network identifiers (PLMN IDs) sent by base station equipment, wherein the plurality of PLMN IDs comprise a PLMN ID corresponding to local access and mobility management function (AMF) equipment and a PLMN ID corresponding to public network AMF equipment;

generating a connection establishment completion message and sending the connection establishment completion message to the base station equipment under the condition that the target PLMN ID exists in the plurality of PLMN IDs; the connection establishment completion message comprises the target PLMN ID, and the target PLMN ID is a PLMN ID configured in the terminal in advance;

and accessing the target AMF equipment corresponding to the target PLMN ID.

5. The communication method of claim 4, wherein the method further comprises:

determining the target PLMN ID according to configuration information in a Universal Subscriber Identity Module (USIM) of the terminal;

determining whether the target PLMN ID is present from the plurality of PLMN IDs based on the target PLMN ID.

6. A park communication system is characterized by comprising base station equipment, a terminal and local access and mobility management function (AMF) equipment;

the base station equipment is connected with the terminal through an air interface; the base station equipment and the local AMF equipment are connected through an N2 interface;

the base station device is configured to perform the communication method according to any one of claims 1 to 3, and the terminal is configured to perform the communication method according to claim 4 or 5.

7. The campus communication system of claim 6 wherein the campus communication system further comprises a public network AMF device, a Unified Data Management (UDM) device, a Location Management Function (LMF) device, a mobile location center (GMLC) device, and a location application;

the local AMF equipment is respectively connected with the UDM equipment, the LMF equipment and the GMLC equipment;

the public network AMF equipment is respectively connected with the UDM equipment, the LMF equipment and the GMLC equipment;

the base station equipment, the terminal, the local AMF equipment, the LMF equipment, the GMLC equipment and the positioning application are deployed in a campus network;

the public network AMF equipment and the UDM equipment are deployed in a public network.

8. A base station device is characterized in that the base station device is deployed in a park communication system, and the park system further comprises a local access and mobility management function (AMF) device; the base station equipment comprises a transmitting unit, a receiving unit and a processing unit;

the sending unit is configured to send a plurality of public land mobile network identifiers (PLMN IDs) to a terminal, where the PLMN IDs include a PLMN ID corresponding to the local AMF device and a PLMN ID corresponding to a public network AMF device;

the receiving unit is used for receiving a connection establishment completion message sent by the terminal; the connection establishment completion message includes a target PLMN ID among the plurality of PLMN IDs, the connection establishment completion message is generated by the terminal under the condition that it is determined that the target PLMN ID exists among the plurality of PLMNs, and the target PLMN ID is a PLMN ID pre-configured in the terminal;

the processing unit is configured to access the terminal to a target AMF device corresponding to the target PLMN ID.

9. A terminal is characterized by comprising a receiving unit, a generating unit, a sending unit and a processing unit;

the receiving unit is configured to receive a plurality of public land mobile network identifiers PLMN IDs sent by a base station device, where the plurality of PLMN IDs include a PLMN ID corresponding to an AMF device of a local access and mobility management function and a PLMN ID corresponding to an AMF device of a public network;

the generating unit is configured to generate a connection establishment completion message when it is determined that a target PLMN ID exists in the plurality of PLMN IDs; the connection establishment completion message comprises the target PLMN ID, and the target PLMN ID is a PLMN ID configured in the terminal in advance;

the sending unit is configured to send the connection establishment completion message to the base station device;

the processing unit is configured to access a target AMF device corresponding to the target PLMN ID.

10. A base station device, characterized in that the base station device comprises a memory and a processor;

the memory and the processor are coupled;

the memory for storing computer program code, the computer program code comprising computer instructions;

the base station device, when executing the computer instructions by the processor, performs the communication method of any one of claims 1-3.

11. A terminal, characterized in that the terminal comprises a memory and a processor;

the memory and the processor are coupled;

the terminal, when executing the computer instructions, performs the communication method according to claim 4 or 5.

12. A computer-readable storage medium having instructions stored therein, which when run on a base station device, cause the base station device to perform the communication method of any one of claims 1-3.

13. A computer-readable storage medium having instructions stored therein, which when run on a terminal, cause the terminal to perform the communication method of claim 4 or 5.