CN115811704A

CN115811704A - Position service method, base station and storage medium

Info

Publication number: CN115811704A
Application number: CN202111076859.7A
Authority: CN
Inventors: 王锐; 张龙; 王昕怡; 丁海煜; 王桂英
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2023-03-17

Abstract

The invention discloses a position service method, a base station and a storage medium, comprising the following steps: the base station determines whether the message to be sent is a positioning related message according to the encapsulation protocol of the message; when determining that the message to be sent is a positioning related message, the base station sends the positioning related message to a local position service unit through a control plane; or, when determining that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a large-area core network control plane management network element through a control plane. By adopting the invention, the positioning time delay can be reduced, and the positioning time delay index of an industrial client is met; the method can meet the appeal that the industry client positioning sensitive data does not come out.

Description

Position service method, base station and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a location service method, a base station, and a storage medium.

Background

A 3GPP (3 rd Generation partnership project) has introduced a positioning Function from the LTE (Long term evolution), fig. 1 is a schematic diagram of a 3GPP NR positioning architecture, and a 5G positioning architecture defined by 3GPP is shown in the figure, where network elements involved in NR (New Radio) positioning include an AMF (Access and Mobility Management Function), an LMF (Location Management Function), a gNB (5G base station), a UE (User Equipment), and the like. The AMF is a core network access and mobility management function unit, and the LMF is a core network positioning management function unit.

The defects of the prior art are as follows: the current positioning architecture cannot meet the positioning delay requirement of a client.

Disclosure of Invention

The invention provides a position service method, a base station and a storage medium, which are used for solving the problem that the positioning time delay requirement of a client cannot be met by the existing positioning architecture.

The invention provides the following technical scheme:

a location service method, comprising:

the base station determines whether the message to be sent is a positioning related message according to the encapsulation protocol of the message;

when the base station determines that the message to be sent is a positioning related message, the base station sends the positioning related message to a local position service unit through a control plane; or when the base station determines that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a control plane management network element of a large-area core network through a control plane.

In an implementation, the home location service unit includes all functions of the AMF and all functions of the LMF, or includes part of the functions of the AMF and part of the functions of the LMF.

In implementation, the positioning related message is sent to a local location service unit, and the positioning related message is transmitted to a local LMF serving as the local location service unit after being transparently transmitted by a local AMF.

In an implementation, before determining whether the message to be sent is a positioning related message, the base station further includes:

and after the base station carries out positioning measurement, packaging the measurement result into positioning related information.

In an implementation, the positioning measurements made by the base station are SRS measurements.

In implementation, the encapsulation of the measurement results into the positioning related message is encapsulated by the NRPPa protocol.

In the implementation, the location service request initiated by the location requestor is initiated by the local LMF after the local GMLC receives the LCS Client initiated location request; or, the local GMLC receives the LCS Client initiated location request and initiates through the local AMF.

A base station, comprising:

a processor for reading the program in the memory, performing the following processes:

determining whether the message to be sent is a positioning related message according to the encapsulation protocol of the message;

when the message needing to be sent is determined to be a positioning related message, the positioning related message is sent to a local position service unit through a control plane; or when determining that the message to be sent is a non-positioning related message, sending the non-positioning related message to a large-area core network control plane management network element through a control plane;

a transceiver for receiving and transmitting data under the control of the processor.

In the implementation, before determining that the message to be sent is a positioning related message, the method further includes:

and after the positioning measurement is carried out, packaging the measurement result into a positioning related message.

In an implementation, the positioning measurements made are SRS measurements.

In an implementation, the encapsulation of the measurement results into the positioning related message is encapsulated by the NRPPa protocol.

A base station, comprising:

a base station determining module, which is used for determining whether the message to be sent is a positioning related message according to the encapsulation protocol of the message;

the base station sending module is used for sending the positioning related message to a local position service unit through a control plane when the message to be sent is determined to be the positioning related message; or, when determining that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a large-area core network control plane management network element through a control plane.

In implementation, the base station sending module is further configured to send the location related message to a local location service unit, where the location related message is transmitted through a local AMF and then sent to a local LMF serving as the local location service unit.

In an implementation, the method further comprises the following steps:

and the base station encapsulation module is used for encapsulating the measurement result into a positioning related message after the positioning measurement is carried out.

In an implementation, the positioning measurement that the base station encapsulation module further uses for is an SRS measurement.

In an implementation, the base station encapsulation module is further configured to encapsulate the measurement result into a positioning related message through NRPPa protocol encapsulation.

In an implementation, the method further comprises the following steps:

a base station receiving module, configured to receive a location service request initiated by a location requestor, where the location service request is initiated by a local LMF after a local GMLC receives a location request initiated by an LCS Client; or, after receiving the positioning request initiated by the LCS Client, the local GMLC receives the location service request initiated by the local AMF.

A computer-readable storage medium storing a computer program for executing the above-described location service method.

The invention has the following beneficial effects:

in the technical solution provided in the embodiment of the present invention, when determining that a message to be sent is a positioning related message, a base station sends the positioning related message to a local location service unit, and when determining that the message to be sent is not a positioning related message, the base station sends the positioning related message to a large area AMF. The positioning message is not sent to a local position service unit for processing because the positioning message does not pass through an AMF (advanced Mobile radio) deployed at a higher position of a cellular network; because the local position service unit can be flexibly deployed (such as local and the like), the positioning time delay can be reduced, and the positioning time delay index of an industrial customer is met;

furthermore, because the local position service unit is deployed locally, the positioning data cannot be transmitted to a network element other than the local network, such as a large area AMF, and therefore the requirement that the positioning sensitive data of an industrial client cannot be out of the field can be met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a diagram of a 3GPP NR positioning architecture in the background art;

fig. 2 is a schematic flow chart illustrating an implementation of a location-based service method in a base station according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a positioning architecture according to a first embodiment of the present invention;

fig. 4 is a schematic view illustrating a positioning implementation flow under a positioning architecture according to a first embodiment of the present invention;

fig. 5 is a schematic view of a positioning implementation flow under the positioning architecture in the second embodiment of the present invention;

FIG. 6 is a schematic diagram of a positioning architecture according to a third embodiment of the present invention;

fig. 7 is a schematic view illustrating a positioning implementation flow under a positioning architecture in a third embodiment of the present invention;

fig. 8 is a schematic view of a positioning implementation flow under a positioning architecture in the fourth embodiment of the present invention;

fig. 9 is a schematic diagram of a base station structure according to an embodiment of the present invention.

Detailed Description

The inventor notices in the process of invention that:

the positioning process mainly comprises the following steps:

1: after receiving a positioning request initiated by a LCS Client (LCS; LCS: location Services), a GMLC (Gateway Mobile Location Center) triggers the information authentication of a positioning user and initiates the positioning request to an AMF (advanced Mobile Location function) where the UE is located; or the AMF decides to initiate a positioning (e.g. emergency call) for a certain UE;

2: the AMF transmits the positioning service request to the LMF;

3: the LMF selects the appropriate positioning method.

4: if the LMF judges that the gNB is needed to participate in Positioning, the gNB is positioned and interacted with through an NRPPa (NR Positioning Protocol Annex) Protocol (TRP id; TRP: transmitting and receiving nodes, transmission and Reception Point) and a reference signal measurement result);

5: the LMF receives the measurement information of the gNB, starts position calculation and transmits a positioning result to the AMF;

6: the AMF returns the location result to the GMLC.

The current NR positioning process needs to be triggered by a core network element AMF and transparently transmits positioning information. The AMF is an access and mobility management network element, and is generally deployed at a higher location of a cellular network. Considering that 5G positioning is mainly oriented to industrial clients, and some industrial clients have high requirements for positioning delay, positioning network elements need to be flexibly deployed (such as local and the like), and positioning data belongs to core sensitive data of industrial clients and has a strong safety requirement that data does not come out.

However, the network architecture is limited by the AMF, flexible deployment requirements cannot be met, so that part of scenes cannot meet the positioning delay index of an industrial client, and the requirement that the positioning sensitive data of the industrial client cannot be out of the field cannot be met.

Based on this, the embodiment of the invention provides a positioning scheme, wherein the gNB performs routing according to the message type, forwards the positioning message to a local positioning server for related processing, and forwards other messages to a local market/large area AMF for processing, so that the problem that industry sensitive data cannot be obtained is met.

The following describes embodiments of the present invention with reference to the drawings.

In the description process, the implementation of the base station mainly taking the gNB as an example is described, but the implementation of the AMF, the LMF and the like is also involved, and examples of the implementation of the base station and the LMF are also given in the embodiments to better understand the implementation of the scheme given in the embodiments of the present invention. Such description does not mean that they must be implemented in cooperation or separately, and in fact, when they are implemented separately, they each solve the problem on one side thereof, and when they are used in combination, they achieve better technical effects.

Fig. 2 is a schematic flow chart of an implementation of a location service method on a base station, as shown in the figure, the implementation may include:

step 201, the base station determines whether the message to be sent is a positioning related message according to the encapsulation protocol of the message;

step 202, when determining that the message to be sent is a positioning related message, the base station sends the positioning related message to a local location service unit through a control plane; or, when determining that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a large-area core network control plane management network element through a control plane.

In the national deployment architecture of the 4G core network, the control plane large-area centralized deployment and the provincial centralized deployment have successful deployment cases. Therefore, in the networking scheme of the 5G core network, the control plane network element networking also provides a framework for large-area centralized setting and distributed-provincial setting.

In the Control Plane large area centralized setting architecture, a group backbone level centrally deploys UDM (Unified Data Management entity)/HSS (Home subscription Server)/UDR (Unified Data Repository), PCF (Policy Control Function)/PCRF (Policy and Charging Rules Function), AMF, SMF (Session Management Function)/Session Management Function/GW-C (Control Plane gateway), NRF (Network storage Function), network security Function), nsnssf (Network Slice Selection Function), user Plane Network element UPF (User Plane Function entity, user Plane Function GW)/User Plane gateway (User Plane gateway) at the province and local market level as required. In this architecture, a control plane network element at the center of the large area manages a plurality of provincial user plane network elements.

In the control plane division and province centralized setting architecture, a group backbone level is centrally deployed with NRF (Network redundancy Function) and NEF (Network Exposure Function) and a province level is deployed with UDM/HSS/UDR, PCF/PCRF, AMF and SMF/GW-C, NSSF (Network Slice Selection Function), and a user plane Network element UPF/GW-U can be sunk to a city level as required.

A UPF carrying public internet access services is generally deployed in a core machine room of a province or a city; UPFs that carry government and enterprise services in conjunction with MECs (Mobile Edge Computing) will sink to rooms relatively close to the user in order to reduce latency, typically deployed in Edge rooms at provinces and cities.

In the positioning architecture provided in the embodiment, the gNB performs routing according to the message, forwards the positioning message to the local positioning server for related processing, and forwards other messages to the local city/large area AMF for processing, so as to meet the unaffordable demand of industry sensitive data.

Specifically, the home location service unit may be AMF + LMF, or may be implemented in other manners, such as a full function of the AMF and a full function of the LMF, or include a partial function of the AMF and a partial function of the LMF.

Specifically, the location service unit has the AMF + LMF function, and the location service unit has a part of the AMF function (for example, binding user information and location information) and a whole LMF function (for example, selecting a positioning algorithm, calculating a position, and the like).

In specific implementation, it is considered in the industry that functional entities such as the AMF and the LMF are network elements that exist independently, but in the technical solution provided in the embodiment of the present invention, the LMF refers to more than all or part of functions that are the same as those of the LMF network element, that is, the positioning management functions such as positioning algorithm selection and position calculation are implemented, and the functions may exist in a position service unit (e.g., embodiment one or embodiment two), and do not exist in the form of independent network elements; however, the embodiments also provide an implementation in which the LMF exists as a separate network element, as described in the third and fourth embodiments.

In the following embodiments, the manner of sending the location related message to the local LMF located in the location service unit is described in the first embodiment and the second embodiment, and the manner of sending the location related message to the local LMF after being transmitted through the local AMF is described in the third embodiment and the fourth embodiment.

In the implementation, before determining whether the message to be sent is a positioning related message, the base station may further include:

The embodiments a and b will be described in the following embodiments, after receiving the positioning request initiated by the LCS Client, the local GMLC initiates a local LMF, and after receiving the positioning request initiated by the LCS Client, the embodiments a and b will be described in the following embodiments a and b.

The following description is made with reference to examples.

The location service unit in the first embodiment may be deployed in the form of AMF + LMF, or may be partially AMF function + LMF full function. Example two describes the AMF + LMF form.

The first embodiment is as follows:

fig. 3 is a schematic diagram of a positioning architecture in the first embodiment, and fig. 4 is a schematic diagram of a positioning implementation flow under the positioning architecture in the first embodiment, as shown in the figure, the positioning implementation flow mainly includes:

1. after receiving the positioning request initiated by the LCS Client, the local GMLC triggers the information authentication of the positioning user and initiates the positioning request to a position service unit where the UE is located;

2. and the location service unit selects a proper positioning method according to whether the gNB or the UE participates in positioning.

Specifically, after the location service request, the LMF or the location service unit may determine whether the location is performed by the base station side or the base station + terminal according to the location service request, and select a location algorithm according to the determination (for example, only the base station may use a UTDOA (Uplink Time Difference of Arrival) algorithm, and if the base station + terminal needs a RTT (bidirectional transmission delay, round Trip Time) algorithm).

3. If the location service unit judges that the gNB needs to participate in positioning, the location service unit interacts with the gNB positioning through an NRPPa protocol (TRP id, SRS (Sounding Reference Signal) configuration and the like); the gNB performs SRS measurement and encapsulates the SRS measurement through an NRPPa protocol; routing by the gNB according to the message type (namely, whether the message is packaged in the NRPPa protocol format); if the message is the positioning related message, the gNB forwards the message to the local position service unit; if not, the gNB forwards the message to the macro AMF.

Specifically, the determination of whether the gNB is required to participate in the positioning may be implemented by an algorithm of the LMF.

4. And the local position service unit receives the measurement information of the gNB, starts position calculation, associates a position result with user information, and transmits a positioning result to the local GMLC or a third-party application.

Specifically, after judging whether the message is a positioning related message, the gNB performs routing selection; if yes, the gNB forwards the message to a local location service unit; if not, the gNB forwards the message to the large area AMF;

in implementation, when encapsulating, the gNB may know whether the information is the positioning related information, and encapsulates the information by using the NRPPa protocol. If the message is an NRPPa protocol encapsulation message, forwarding the message to a local position service unit through an N2 port; if the message is a non-NRPPa protocol encapsulation message, the message is forwarded to the large area AMF through the N2 port.

And the local position service unit receives the measurement information of the gNB, starts position calculation and transmits a positioning result to the local GMLC or a third party application.

Example two

In this example, the positioning architecture is the same as the first embodiment. Fig. 5 is a schematic view of a positioning implementation flow under the positioning architecture in the second embodiment, as shown in the figure, the positioning implementation flow mainly includes:

1. after receiving a positioning request initiated by an LCS Client, the local GMLC triggers the information authentication of a positioning user and initiates the positioning request to a position service unit where the UE is located;

2. the location service unit selects a proper location method according to whether the gNB or the UE participates in location;

3. if the location service unit judges that the gNB needs to participate in positioning, the location service unit interacts with the gNB positioning through an NRPPa protocol (such as TRP id, SRS configuration and the like); the gNB performs SRS measurement and encapsulates the SRS measurement through an NRPPa protocol; routing by the gNB according to the message type (i.e., whether the message is encapsulated in the NRPPa protocol format); if the message is the positioning related message, the gNB forwards the message to the local position service unit; if the message is not the positioning related message, the gNB forwards the message to the large area AMF;

4. if the location service unit determines that the UE needs to participate in positioning, the location service unit interacts with the gNB positioning through the LPP protocol or the SUPL protocol (such as PRS configuration, measurement results and the like);

5. and the local location service unit receives the measurement information of the gNB and the UE, starts location calculation, associates a location result with user information, and transmits a location result to the local GMLC or a third-party application.

Example three:

fig. 6 is a schematic diagram of a positioning architecture in the third embodiment, and fig. 7 is a schematic diagram of a positioning implementation flow under the positioning architecture in the third embodiment, as shown in the figure, the positioning implementation flow mainly includes:

1. after receiving a positioning request initiated by an LCS Client, the local GMLC triggers the information authentication of a positioning user and initiates the positioning request to a local AMF where the UE is located;

2. the local AMF passes the location service request to the local LMF.

3. And the local LMF selects a proper positioning method according to whether the gNB or the UE participates in positioning.

4. If the local LMF judges that the gNB needs to participate in positioning, the local LMF interacts with the gNB positioning through an NRPPa protocol (such as TRP id, SRS configuration and the like); the gNB performs SRS measurement and encapsulates the SRS measurement through an NRPPa protocol; routing by the gNB according to the message type (i.e., whether the message is encapsulated in the NRPPa protocol format); if the message is the positioning related message, the gNB forwards the message to a local AMF, the local AMF transmits the message, and the message is transferred to a local LMF; (ii) a If the message is not the positioning related message, the gNB forwards the message to the large area AMF;

5. the gNB judges whether the message is a positioning related message; if yes, the gNB forwards the message to a local AMF, the local AMF conducts transparent transmission, and the message is forwarded to a local LMF; if not, the gNB forwards the message to the large area AMF;

6. the local LMF receives the measurement information of the gNB, starts position calculation and transmits a positioning result to the local AMF;

7. the home AMF passes the location result to the home GMLC or a third party application.

Example four

In this example, the positioning structure is the same as that of the embodiment. Fig. 8 is a schematic view of a positioning implementation flow under the positioning architecture in the fourth embodiment, as shown in the figure, the positioning implementation flow mainly includes:

1. after receiving a positioning request initiated by an LCS Client, a local GMLC triggers the information authentication of a positioning user and initiates the positioning request to a local AMF where UE is located;

2. the local AMF transmits the positioning service request to a local LMF;

4. If the local LMF judges that the gNB needs to participate in positioning, the local LMF interacts with the gNB positioning through an NRPPa protocol (such as TRP id, SRS configuration and the like); the gNB performs SRS measurement and encapsulates the SRS measurement through an NRPPa protocol; routing by the gNB according to the message type (namely, whether the message is packaged in the NRPPa protocol format); if the message is the positioning related message, the gNB forwards the message to a local AMF, the local AMF transmits the message, and the message is transferred to a local LMF; if the message is not the positioning related message, the gNB forwards the message to the large area AMF;

5. if the local LMF judges that the UE needs to participate in positioning, the local LMF interacts with the gNB positioning through an LPP protocol (such as PRS configuration, measurement results and the like);

6. the local LMF receives the measurement information of the gNB and the UE, starts position calculation and transmits a positioning result to the local AMF;

In the above embodiment, the gNB in the architecture may perform AMF routing according to the message type;

after routing selection is carried out by the gNB according to the positioning message, a control plane signaling related to positioning is sent to a local position service unit or a local AMF through an N2 interface; and sending the non-positioning related control plane signaling to the large area AMF through an N2 interface.

Based on the same inventive concept, the embodiment of the present invention further provides a base station and a computer-readable storage medium, and since the principle of solving the problem of these devices is similar to the location-based service method, the implementation of these devices may refer to the implementation of the method, and repeated details are not repeated.

When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.

Fig. 9 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

a processor 900 for reading the program in the memory 920, executing the following processes:

determining whether the message to be sent is a positioning related message according to a message encapsulation protocol;

a transceiver 910 for receiving and transmitting data under the control of the processor 900.

In an implementation, the positioning measurements made are SRS measurements.

In fig. 9, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 900, and various circuits, represented by memory 920, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 910 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

An embodiment of the present invention further provides a base station, including:

a base station sending module, configured to send a location related message to a local location service unit through a control plane when it is determined that the message to be sent is the location related message; or, when determining that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a large-area core network control plane management network element through a control plane.

In an implementation, the method further comprises the following steps:

a base station receiving module, configured to receive a location service request initiated by a location requestor, where the location service request is initiated by a local LMF after a local GMLC receives a location request initiated by an LCS Client; or, after receiving the positioning request initiated by the LCS Client, the local GMLC receives a location service request initiated by the local AMF.

For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.

The embodiment of the invention also provides a computer readable storage medium, and the computer readable storage medium stores a computer program for executing the location service method.

The specific implementation can be seen in the implementation of the location service method on the base station side.

To sum up, in the technical solution provided in the embodiment of the present invention, the gNB performs routing according to whether the gNB is a positioning message, and divides the control plane signaling into positioning related signaling and non-positioning related signaling, and forwards the positioning related gNB to the local location service unit or the local AMF; the non-location related gbbs are forwarded to the large area AMF.

Thereby preventing the positioning data from coming out of the field; and reduce positioning delay.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A location service method, comprising:

when determining that the message to be sent is a positioning related message, the base station sends the positioning related message to a local position service unit through a control plane; or, when determining that the message to be sent is a non-positioning related message, the base station sends the non-positioning related message to a large-area core network control plane management network element through a control plane.

2. A method according to claim 1, characterized in that the home location service unit comprises all functions of the access and mobility management function, AMF, and all functions of the location management function, LMF, or comprises part of the functions of the AMF and all functions of the LMF, or comprises part of the functions of the AMF and part of the functions of the LMF.

3. The method of claim 1, wherein sending the location related message to a local location service unit is sending the location related message to a local LMF as a local location service unit after transparent transmission through a local AMF.

4. The method of any of claims 1 to 3, wherein the base station, prior to determining whether the message to be sent is a positioning related message, further comprises:

and after the base station carries out positioning measurement, encapsulating the measurement result into positioning related information.

5. The method of claim 4, wherein the positioning measurements made by the base station are sounding reference signal, SRS, measurements.

6. The method of claim 4, wherein encapsulating measurements into location related messages is encapsulated by a new air interface location protocol attachment, NRPPa, protocol.

7. The method of claim 4, wherein the location service request initiated by the location requestor is initiated by the local LMF after the local Gateway Mobile Location Center (GMLC) receives the location request initiated by the location service Client (LCS Client); or, the local GMLC receives the LCS Client initiated location request and initiates through the local AMF.

8. A base station, comprising:

9. A base station, comprising:

a base station determining module, configured to determine whether a message to be sent is a positioning related message according to a message encapsulation protocol;

10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 7.