CN114765730A

CN114765730A - Positioning reference signal configuration method, device, communication equipment and storage medium

Info

Publication number: CN114765730A
Application number: CN202110037471.XA
Authority: CN
Inventors: 张静文; 左君; 刘建军
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: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-07-19

Abstract

The invention discloses a positioning reference signal configuration method, a configuration triggering method, a device, a communication device and a storage medium, wherein the method comprises the following steps: configuring on-demand DL PRS configuration information based on the location service request; the location service request location requirement comprises at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; and sending the DL PRS configuration information as required to target equipment.

Description

Positioning reference signal configuration method, device, communication equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications, and in particular, to a Positioning Reference Signal (PRS) configuration method, a configuration triggering method, an apparatus, a communication device, and a storage medium.

Background

The communication protocol requires 16(R16, Release16) Downlink (DL, Downlink) PRS to support only a periodic configuration, and considering that the communication protocol requires 17(R17, Release17) positioning to be enhanced towards an indoor factory scene to achieve a positioning capability with higher precision and lower latency, the configuration of supporting only the periodic DL PRS will significantly increase the configuration overhead on the network side. In order to improve the positioning accuracy, finer beam transmission is required to improve the detection signal-to-noise ratio and the beam granularity, and then the positioning server needs to configure more DL PRS resources (resources) to support the finer beam transmission.

In the related art, the Positioning-related reference signal configuration is carried by an application layer Protocol Long Term Evolution (LTE) Positioning Protocol (LPP) and an NR Positioning Protocol replica (NRPPa), and the DL PRS can still be configured and triggered only by a Positioning server through the LPP and NRPPa on a high layer basis, which results in a Long signaling flow and a Long delay.

Disclosure of Invention

In view of the above, the present invention provides a positioning reference signal configuration method, a configuration triggering method, a device, a communication device and a storage medium.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides a positioning reference signal configuration method, which is applied to a first network node and comprises the following steps:

configuring on-demand downlink positioning reference signal (DL PRS) configuration information based on the location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

and sending the DL PRS configuration information as required to target equipment.

In the above scheme, the location service request is initiated by a network and/or a terminal;

Initiating, by a network corresponding to the location service request, the on-demand DL PRS configuration information triggered by a second network node;

initiating, by a terminal, the on-demand DL PRS configuration information corresponding to the location service request, the terminal triggering.

In the above solution, the target device includes: a base station and a terminal;

the sending the on-demand DL PRS configuration information to the target device includes at least one of:

transmitting first on-demand DL PRS configuration information to a terminal and/or a base station;

sending indication information to a base station; the indication information is used for indicating the base station to configure DL PRS resources as required; the indication information carries at least one of: DL PRS transmission times, duration, bandwidth and resource types as required; or, the indication information carries second on-demand DL PRS configuration information;

wherein the corresponding on-demand DL PRS configuration information comprises: at least one set of on-demand DL PRS resources.

In the above scheme, the on-demand DL PRS resources are semi-persistent resources or non-periodic resources.

In the above scheme, the sending the on-demand DL PRS configuration information to the target device includes at least one of:

transmitting the first on-demand DL PRS configuration information or the indication information to a base station through an NRPPa protocol; the base station determines third on-demand DL PRS configuration information according to the indication information, and sends the third on-demand DL PRS configuration information to the terminal through a Radio Resource Control (RRC) protocol;

And sending the first on-demand DL PRS configuration information to a terminal through LPP.

The embodiment of the invention provides a positioning reference signal configuration triggering method, which is applied to a terminal and comprises the following steps:

sending a location service request; the location service request is used for requesting DL PRS configuration information on demand; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

In the above solution, the sending the location service request includes:

transmitting an uplink Scheduling Request (SR); the SR carries a location service request.

In the above scheme, the method further comprises:

sending first resource information; the first resource information includes at least one of:

a transmission and reception node (TRP) Identifier (ID), a PRS resource set ID, a PRS resource ID, and a PRS resource Reference Signal Received Power (RSRP).

In the above solution, the location service request further carries at least one of the following:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In the foregoing solution, before the sending the location service request, the method further includes:

Receiving a periodic reporting request from a base station;

based on the periodic reporting request, sending the location service request; or, based on the periodic reporting request, sending the location service request and the first resource information.

In the foregoing solution, the method further includes at least one of:

receiving Downlink Control Information (DCI) from a base station; triggering an on-demand DL PRS resource set for a location service request according to the DCI;

receiving media access control information (MAC-CE) from a base station, and activating an on-demand DL PRS resource set aiming at a position service request according to the MAC-CE.

In the foregoing solution, the method further includes one of:

receiving third on-demand DL PRS configuration information sent by an RRC protocol from the base station;

receiving first on-demand DL PRS configuration information sent over LPP from a first network node;

wherein, the corresponding on-demand DL PRS configuration information comprises: at least one set of on-demand DL PRS resources.

The embodiment of the invention provides a positioning reference signal configuration triggering method, which is applied to a base station and comprises the following steps:

Sending a periodic reporting request to a terminal;

receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

triggering an on-demand DL PRS resource based on the location service request.

In the above solution, the receiving a location service request from a terminal includes:

receiving an SR from a terminal; the SR carries a location service request.

In the above scheme, the method further comprises:

receiving first resource information; the first resource information includes at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In the above scheme, the method further comprises:

and sending a notification message of the configuration result of the on-demand DL PRS resource to a positioning server so that the terminal sends the measurement result of the on-demand DL PRS resource to the positioning server.

In the foregoing solution, the triggering on-demand DL PRS resources based on the location service request includes:

Determining a wide beam direction for a terminal based on a PRS resource ID and a PRS resource RSRP from the terminal;

triggering, based on the location service request, on-demand DL PRS resources for the location service request.

In the above solution, the triggering on-demand DL PRS resources for the location service request includes at least one of:

transmitting DCI to a terminal; the DCI is used to trigger an on-demand DL PRS resource set for a location service request;

transmitting the MAC-CE to the terminal; the MAC-CE is configured to activate an on-demand DL PRS resource set for a location service request.

In the above scheme, the method further comprises:

receiving first on-demand DL PRS configuration information or indication information transmitted over NRPPa protocol from a first network node;

the indication information is used for indicating the base station to configure DL PRS resources as required; the indication information carries at least one of: DL PRS transmission times, duration, bandwidth and resource types as required; or, the indication information carries second on-demand DL PRS configuration information;

the corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

The embodiment of the invention provides a positioning reference signal configuration device, which comprises:

A first processing module to configure on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

a first communication module, configured to send the on-demand DL PRS configuration information to a target device.

In the above solution, the location service request is initiated by a network and/or a terminal;

the first communication module is configured to perform at least one of:

In the foregoing solution, the first communication module is configured to execute at least one of:

transmitting the first on-demand DL PRS configuration information or the indication information to a base station through an NRPPa protocol; the base station determines third on-demand DL PRS configuration information according to the indication information and sends the third on-demand DL PRS configuration information to the terminal through an RRC protocol;

The embodiment of the invention provides a positioning reference signal configuration triggering device, which comprises:

the second communication module is used for sending a position service request; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

In the above scheme, the second communication module is configured to send an SR; the SR carries a location service request.

In the above solution, the second communication module is further configured to send first resource information; the first resource information includes at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In the above solution, the second communication module is further configured to receive a periodic reporting request from a base station before sending the location service request;

In the foregoing solution, the second communication module is further configured to execute at least one of:

receiving DCI from a base station; triggering an on-demand DL PRS resource set for a location service request according to the DCI;

receiving a MAC-CE from a base station, and activating an on-demand DL PRS resource set aiming at a position service request according to the MAC-CE.

In the foregoing solution, the second communication module is further configured to execute one of:

Wherein, the corresponding DL PRS configuration information as required comprises: at least one set of on-demand DL PRS resources.

the third communication module is used for sending a periodic reporting request to the terminal;

and receiving a location service request from the terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

a third processing module, configured to trigger an on-demand DL PRS resource based on the location service request.

In the foregoing solution, the third communication module is configured to receive an SR; the SR carries a location service request.

In the above scheme, the third communication module is configured to receive first resource information; the first resource information includes at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In the above solution, the third communication module is further configured to send a notification message of a configuration result of an on-demand DL PRS resource to a positioning server, so that the terminal sends a measurement result on an on-demand DL PRS to the positioning server.

In the above solution, the third processing module is configured to determine a wide beam direction of a terminal based on a PRS resource ID and a PRS resource RSRP from the terminal;

In the foregoing solution, the third processing module is configured to execute at least one of the following:

transmitting the DCI; the DCI is used for triggering an on-demand DL PRS resource set aiming at a position service request;

transmitting the MAC-CE; the MAC-CE is configured to activate an on-demand set of DL PRS resources for a location service request.

In the above solution, the third communication module is configured to receive first on-demand DL PRS configuration information or indication information sent by an NRPPa protocol from a first network node;

The embodiment of the invention provides communication equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the step of the positioning reference signal configuration method at any one side of a first network node;

the processor implements any one of the positioning reference signal configuration methods at the terminal side when executing the program; alternatively, the first and second electrodes may be,

and when the processor executes the program, the step of implementing the positioning reference signal configuration method at any one of the base station sides is realized.

An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the positioning reference signal configuration method of any one of the first network node sides;

the computer program is executed by a processor to realize the step of any one of the positioning reference signal configuration methods at the terminal side; alternatively, the first and second electrodes may be,

the computer program, when executed by a processor, implements the steps of the positioning reference signal configuration method of any one of the base station sides.

In the method, the device and the storage medium for configuring the positioning reference signal provided by the embodiment of the invention, on one hand, a first network node configures DL PRS configuration information as required based on a position service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; sending the DL PRS configuration information as required to target equipment; on the other hand, the terminal sends a location service request; the location service request is used for requesting DL PRS configuration information on demand; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; on the other hand, the base station sends a periodic reporting request to the terminal; receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; triggering DL PRS resources based on the location service request. By adopting the technical scheme of the embodiment of the invention, the DL PRS configuration as required is realized, and the lower reference signal configuration overhead is considered on the premise of ensuring the positioning precision.

Drawings

Fig. 1 is a flow chart illustrating a DL PRS configuration method;

FIG. 2 is a diagram illustrating comparison of configuration overhead in a scenario of a periodic DL PRS configuration;

fig. 3 is a schematic flowchart illustrating a method for configuring a positioning reference signal according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of a positioning reference signal configuration triggering method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating another positioning reference signal configuration triggering method according to an embodiment of the present invention;

FIG. 6 is a diagram illustrating an on-demand DL PRS resource according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a positioning reference signal configuration apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a positioning reference signal configuration triggering device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another positioning reference signal configuration triggering device according to an embodiment of the present invention;

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

Detailed Description

The present invention will be described in further detail with reference to examples, and the related art will be described first.

First, the DL PRS configuration in the related art is explained below;

DL PRS is defined in R16 to support over-the-air positioning for UEs. Since the new Null (NR) has the capability of multiple beams, the DL PRS defined in R16 can be transmitted by using a beam scanning method by configuring multiple DL PRS resources (resources) in one resource configuration set, and when the transmission direction of a certain beam is aligned to the terminal, the terminal can detect the arrival time of the direct-view path, thereby effectively improving the accuracy of the terminal in estimating the arrival time of the reference signal.

The configuration period supported by DL PRS resource in R16 is 2 μ {4,5,8,10,16,20,32,40,64,80,160,320,640,1280,2560,5120,10240}, where μ ═ 0,1,2, and 3 respectively represent subcarrier intervals adopted by DL PRS of 15kHz, 30kHz, 60kHz, and 120 kHz.

Regarding the DL PRS configuration flow, it is: the DL PRS for the terminal to perform downlink measurement is directly configured by a Location Server (Location Server) and is carried by a high-layer Protocol LTE Positioning Protocol (LPP), and the configuration flow is shown in fig. 1 and includes:

1. a positioning server requests positioning capability from a terminal (UE) based on LPP;

2. the terminal provides positioning capability based on LPP;

3. a positioning server sends auxiliary information for positioning to a terminal, wherein the auxiliary information comprises information such as cell ID for measurement, reference signal configuration and the like;

4. The positioning server sends a request of position information to the terminal;

5. the terminal starts to measure the Reference Signal Time Difference (RSTD) or the Signal transmit-receive Time Difference (Rx-Tx Time Difference), and reports the measured content.

The R16 DL PRS only supports periodic configuration, and considering that R17 positioning enhances the indoor factory scenario-oriented positioning capability to achieve higher-precision and lower-latency positioning capability (e.g., positioning precision of horizontal dimension <0.2m, positioning latency <100ms), the configuration of only supporting periodic DL PRS will significantly increase the configuration overhead of the network side, and fig. 2 is a schematic diagram of the configuration overhead of the network side in the scenario of periodic DL PRS configuration; as shown in fig. 2, in order to improve the positioning accuracy, it is necessary to use finer beam transmission to improve the detection signal-to-noise ratio and the beam granularity, and then the positioning server needs to configure more DL PRS resources to support the finer beam transmission. In addition, currently, the positioning-related reference signal configuration is carried by both application layer protocols LPP and NRPPa, and the on-demand DL PRS can still only be configured and triggered by the positioning server through the higher layer protocols LPP and NRPPa. Namely, the scheme brings the problems of large configuration overhead of DL PRS, large time delay of configuration flow and the like.

Based on this, in the embodiments of the present invention, on one hand, the first network node configures on-demand DL PRS configuration information based on the location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; sending the DL PRS configuration information as required to target equipment; on the other hand, the terminal sends a location service request; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; on the other hand, the base station sends a periodic reporting request to the terminal; receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; triggering DL PRS resources based on the location service request.

The present invention will be described in further detail with reference to examples.

Fig. 3 is a schematic flowchart illustrating a method for configuring a positioning reference signal according to an embodiment of the present invention; as shown in fig. 3, the positioning reference signal configuration method is applied to a first network node, where the first network node is specifically a certain node providing a positioning service, and may be specifically a positioning server; the positioning server is provided with a positioning Management Function (LMF) module for processing a position server request; the method comprises the following steps:

step 301, configuring on-demand DL PRS configuration information based on a Location services request (Location services request); the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

step 302, sending the on-demand DL PRS configuration information to a target device.

In an embodiment, before configuring the on-demand DL PRS configuration information based on the location service request, the method may further include:

receiving a location service request;

processing the location service request; wherein the processing the location service request comprises at least: determining at least one of a latency requirement, an accuracy requirement, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets included in the location service request.

The processing the location service request may further include: and determining whether to trigger the DL PRS configuration according to the time delay requirement and the precision requirement.

For example, the terminal determines that the required positioning accuracy is <1m, and finds that the RSRP is poor or the timing correlation peak is gentle by detecting the periodic DL PRS, so that the positioning accuracy requirement cannot be met;

the positioning end-to-end delay requirement of the terminal is less than 100ms, and the periodic DL PRS configuration period is 160ms, so that the positioning delay requirement cannot be met;

in the above case, it may be determined that an on-demand DL PRS resource configuration needs to be triggered.

In one embodiment, the target device comprises: a base station and a terminal;

the sending of the on-demand DL PRS configuration information to a target device includes at least one of:

wherein, the corresponding on-demand DL PRS configuration information comprises: at least one set of on-demand DL PRS resource sets;

That is, the first on-demand DL PRS configuration information may include: at least one set of on-demand DL PRS resource sets;

the second on-demand DL PRS configuration information may include: at least one set of on-demand DL PRS resource sets;

the on-demand DL PRS resource sets included in the first on-demand DL PRS configuration information and the second on-demand DL PRS configuration information may be the same or different.

The on-demand DL PRS transmission times represent transmission times of corresponding groups of on-demand DL PRS resources;

the duration represents the duration that can be sustained after the configuration of the DL PRS resources according to the corresponding group.

And the bandwidth represents the bandwidth corresponding to the corresponding group of DL PRS resources as required.

The resource type represents the resource type of the corresponding group of DL PRS resources as required; here, the on-demand DL PRS resources are semi-persistent resources or aperiodic resources. Namely, the resource types include: semi-persistent resources, aperiodic resources.

In an embodiment, the on-demand DL PRS resources included in the on-demand DL PRS resource set are semi-persistent resources or non-periodic resources.

Wherein the semi-persistent resources characterize that on-demand DL PRS resources can be activated and deactivated by MAC-CE, and the on-demand DL PRS resources are applied with a certain configuration periodicity in an activation time;

The aperiodic resource characterization on-demand DL PRS resource can be triggered by DCI, and the on-demand DL PRS resource has no periodic concept, is not applied repeatedly, and is applied only at a certain transmission opportunity.

Specifically, information transmitted to the base station can be divided into two categories;

one is on-demand DL PRS configuration information; here, based on a Location Management Function (LMF), an on-demand DL PRS resource configuration is determined and transmitted to a base station through NRPPa (and also transmitted to a terminal through LPP), how the LMF is configured, how the base station transmits, and how the terminal receives;

the other is indication information; here, the LMF only provides a recommended configuration (carried in the indication information) to the base station, including bandwidth, period, and the like, and the specific configuration information is determined by the base station, and after the determination, the configuration may be sent to the terminal through a Radio Resource Control (RRC) signaling (at this time, the base station may also feed back the final configuration to the LMF).

In an embodiment, the location service request is initiated by a network and/or a terminal;

initiating by the network, corresponding to the location service request, corresponding on-demand DL PRS configuration information triggered by a second network node;

A corresponding on-demand DL PRS configuration information is triggered by the terminal in response to the location service request.

Here, triggering configuration of the positioning reference signal may be implemented by different devices; for example, the terminal may request positioning (for example, a positioning scene such as a map needs to be used); the location information may also be a network (for example, a second network node, where the second network node may be a network side client (5GC client) or a core network Access and Mobility Management Function (AMF), for example, in a scenario such as FCC 911 emergency call, a terminal makes a call for help, and the core network initiates a location service request to a location server to request location information of the terminal.

In an embodiment, the sending the on-demand DL PRS configuration information to the target device includes at least one of:

transmitting first on-demand DL PRS configuration information or the indication information to a base station through an NRPPa protocol; the base station determines third on-demand DL PRS configuration information according to the indication information and sends the third on-demand DL PRS configuration information to the terminal through an RRC protocol;

Here, the first network node transmits the on-demand DL PRS configuration information, which may be before or after the request.

For sending the DL PRS configuration information as required before the request, it can be understood that a positioning server or a base station configures one or more sets of DL PRS configurations as required by using a higher layer protocol, when the terminal has a need, a location service request (physical layer process) is sent to trigger one or more sets of configurations, after the base station receives the request, a sending behavior is started, and the terminal starts a receiving and measuring behavior.

Regarding the first, second, and third on-demand DL PRS configuration information, the following is further explained:

the first on-demand DL PRS configuration information is a set of explicit configuration information according to which a terminal (i.e., when the corresponding on-demand DL PRS configuration information is triggered by the terminal) or a base station (i.e., when the corresponding on-demand DL PRS configuration information is triggered by the base station) can explicitly configure.

The information carried by the indication information can be one or more sets of definite configuration information or a wide configuration; in particular, in the case of a system,

the information carried by the indication information is a wide configuration, and specifically includes: the indication information carries at least one of the transmission times, duration, bandwidth and resource type of the DL PRS according to needs; correspondingly, after obtaining the indication information, the base station may autonomously determine explicit configuration information according to at least one of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, and the resource type carried in the indication information, that is, autonomously determine explicit third on-demand DL PRS configuration information that satisfies the requirements of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, the resource type, and the like carried in the indication information according to at least one of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, and the resource type carried in the indication information.

Of course, the information carried by the indication information may also be one or more sets of explicit configuration information, specifically: the indication information carries one or more sets of on-demand DL PRS configuration information, and the base station can select one set of on-demand DL PRS configuration information as third on-demand DL PRS configuration information, namely, the base station definitely configures how.

Each set of on-demand DL PRS configuration information herein may include: at least one set of on-demand DL PRS resources.

In an embodiment, the location service request may further carry at least one of the following:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In an embodiment, the method may further include:

Fig. 4 is a schematic flowchart of a positioning reference signal configuration triggering method according to an embodiment of the present invention; as shown in fig. 4, the present invention is applied to a terminal, which may be a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a Personal Digital Assistant (PDA), a PAD computer (PAD), a Portable Multimedia Player (PMP), a wearable device (such as a smart band, a smart watch, etc.), a navigation device, etc.; the method comprises the following steps:

Step 401, sending a location service request;

wherein the location service request is for requesting on-demand DL PRS configuration information;

the location service request includes at least one of: the method comprises the steps of time delay requirement, precision requirement, recommended on-demand DL PRS configuration information and recommended on-demand DL PRS resource set.

The recommended on-demand DL PRS configuration information and the recommended on-demand DL PRS resource set may specifically be requested by the terminal to the positioning server according to its own positioning requirement and/or periodic DL PRS measurement result.

In one embodiment, the sending the location service request comprises: transmitting an uplink Scheduling Request (SR); the SR carries a location service request.

In an embodiment, the method further comprises:

a transmitting and Receiving node (TRP, transmission and reception Points) identifier (ID, Identity document), a PRS resource set ID, a PRS resource ID, and a PRS resource Reference Signal Received Power (RSRP).

In an embodiment, the location service request further carries at least one of the following:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

That is, the terminal may transmit at least one of: delay requirement, precision requirement, recommended on-demand DL PRS configuration information, recommended on-demand DL PRS resource set, TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In an embodiment, before the sending the location service request, the method further comprises:

receiving a periodic reporting request from a base station;

In an embodiment, the method further comprises one of:

In an embodiment, the method further comprises:

step 402, receiving on-demand DL PRS configuration information.

Specifically, the step 402 includes at least one of:

wherein the first on-demand DL PRS configuration information comprises: at least one set of on-demand DL PRS resources;

the second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

The first network node may be a positioning server.

the first on-demand DL PRS configuration information is a set of explicit configuration information according to which a terminal or a base station may explicitly configure how.

The information carried by the indication information can be one or more sets of definite configuration information or a wide configuration; in particular, the present invention relates to a method for producing,

Fig. 5 is a flowchart illustrating another positioning reference signal configuration triggering method according to an embodiment of the present invention; as shown in fig. 5, the method is applied to a base station, and the method includes:

step 501, sending a periodic reporting request to a terminal;

step 502, receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

step 503, triggering the DL PRS resource according to the position service request.

In an embodiment, the receiving a location service request from a terminal includes: receiving an SR from a terminal; the SR carries a location service request.

In an embodiment, the method further comprises:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

In an embodiment, the method further comprises:

and sending a notification message of the configuration result of the on-demand DL PRS resource to a positioning server so that the terminal can send the positioning server based on the measurement result of the on-demand DL PRS resource.

Specifically, when receiving a trigger request from a terminal, a base station needs to notify a positioning server, so that the positioning server can send a position information request to the terminal, and the terminal can report a measurement result based on-demand DL PRS resources to the positioning server.

In an embodiment, the triggering on-demand DL PRS resources based on the location service request includes:

Specifically, the base station determines the wide beam direction of the terminal according to the PRS resource ID and the PRS resource RSRP reported by the periodic DL PRS, and triggers the DL PRS resource on demand according to the precision and the time delay quantization level carried in the SR.

In an embodiment, the triggering on-demand DL PRS resources for the location service request comprises at least one of:

transmitting DCI to the terminal; the DCI is used to trigger an on-demand DL PRS resource set for a location service request;

Specifically, after receiving an on-demand DL PRS trigger request from the terminal, the base station may send DCI to activate an on-demand DL PRS resource and report the resource. Similar to the aperiodic CSI trigger report, the base station sends DCI to trigger a PRS-on-demand trigger state (ondemndtriggerstate), thereby activating its associated PRS report set, which is associated with at least one PRS resource set.

In an embodiment, the method further comprises:

receiving first on-demand DL PRS configuration information or indication information sent by an NRPPa protocol from a network node;

The first on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources;

the first on-demand DL PRS configuration information is a set of explicit configuration information according to which a terminal or a base station can explicitly configure how.

the information carried by the indication information is a wide configuration, and specifically includes: the indication information carries at least one of the transmission times, duration, bandwidth and resource types of the DL PRS as required; correspondingly, after obtaining the indication information, the base station may autonomously determine specific configuration information according to at least one of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, and the resource type carried in the indication information, that is, autonomously determine specific third on-demand DL PRS configuration information that meets the requirements of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, the resource type, and the like carried in the indication information according to at least one of the number of times of on-demand DL PRS transmission, the duration, the bandwidth, and the resource type carried in the indication information.

Of course, the information carried by the indication information may also be one or more sets of explicit configuration information, specifically: the indication information carries one set or multiple sets of on-demand DL PRS configuration information, and the base station can select one set according to the second on-demand DL PRS configuration information to serve as third on-demand DL PRS configuration information, namely, the base station definitely configures how.

Through the methods shown in fig. 3, fig. 4, and fig. 5, embodiments of the present invention provide a scheme in which a network (such as the base station or a certain network element in the network) triggers DL PRS configuration on demand, which can guarantee positioning accuracy while considering lower reference signal configuration overhead, and solve the problems of a large configuration overhead and a long configuration delay in the existing scheme.

The on-demand DL PRS trigger configuration modes provided by the embodiment of the invention comprise the following two types:

one type is configured by a positioning server through an application layer protocol, and does not relate to a physical layer process;

another type is configured by the positioning server through an application layer protocol, and activated/triggered through a physical layer flow, which is specifically as follows:

the method for configuring by a positioning server through a high-level protocol specifically comprises the following steps:

(1) According to the performance/positioning requirement of the network side, the network side requests DL PRS configuration according to needs:

when a client (i.e., a second network node) at a network side initiates a location service request, a positioning server (i.e., a first network node) may determine whether to configure an on-demand DL PRS according to the accuracy, delay requirements, and the like of a positioning service of the location service request, and when determining that the on-demand DL PRS is required, send the on-demand DL PRS configuration information to a base station and a terminal respectively through NRPPa and LPP protocols.

The time domain resource type of the on-demand DL PRS in the on-demand DL PRS configuration information may be semi-persistent or aperiodic.

(2) According to the positioning requirement of the terminal side, the terminal requests DL PRS configuration according to the requirement:

when a client inside the terminal initiates a location service request, the location server may determine whether to configure the DL PRS on demand according to the accuracy, delay requirements, and the like of a location service of the location service request, and if necessary, issue the DL PRS on demand configuration information to the base station and the terminal through NRPPa and LPP protocols, respectively.

Triggering configuration by a physical layer flow specifically comprises the following steps:

The positioning server transmits the DL PRS configuration information as required to a base station and a terminal through NRPPa and LPP protocols; or, the positioning server issues the on-demand DL PRS configuration information or the recommended on-demand DL PRS configuration information to the base station through an NRPPa protocol, and the base station can autonomously determine the on-demand DL PRS configuration, feed the on-demand DL PRS configuration information back to the positioning server by using the NRPPa protocol and issue the on-demand DL PRS configuration information to the terminal by using RRC signaling.

Wherein the on-demand DL PRS configuration information includes: one or more sets of on-demand DL PRS resources.

For the positioning server side, the following is specifically explained:

the positioning server judges according to a position service request (including the precision and time delay requirements of a positioning service) requested by a network side/a terminal side or a measurement result of a periodic DL PRS, and when the configuration of the periodic DL PRS cannot meet the performance requirement of the positioning service, a base station corresponding to a serving cell is informed to activate a semi-continuous on-demand DL PRS for a corresponding terminal by using a physical layer process, or trigger an aperiodic DL PRS;

and activating the semi-continuous DL PRS on demand by using the MAC-CE by the base station corresponding to the serving cell, or triggering the non-periodic DL PRS on demand by using the DCI.

For the terminal side, the following is specified:

The terminal judges according to the precision and time delay requirements of the positioning service requested by the internal application of the terminal or the measurement result of the periodic DL PRS, and when the configuration of the periodic DL PRS cannot meet the performance requirements of the positioning service, the base station corresponding to the serving cell is requested by using the physical layer flow to activate/trigger the on-demand DL PRS for the base station.

Specifically, the terminal judges the configuration and the measurement result of the periodic DL PRS according to the requirements of positioning accuracy and time delay, and triggers the base station to configure the DL PRS as required when the measurement result of the periodic DL PRS cannot meet the requirements of accuracy and/or time delay.

or, the positioning end-to-end delay requirement of the terminal is less than 100ms, and the periodic DL PRS configuration period is 160ms, which cannot meet the positioning delay requirement;

under the corresponding condition, the terminal adopts the physical layer flow to rapidly trigger the base station to configure the DL PRS resource as required, and the base station configures the finer DL PRS resource as required for the terminal in the wide beam direction of the terminal.

FIG. 6 is a diagram illustrating an on-demand DL PRS resource according to an embodiment of the present invention; in the figure, LMF denotes a location service request, gNB denotes a base station, and UE denotes a terminal. As can be seen from fig. 6, on-demand PRS with narrow beams can improve accuracy/reduce delay.

Regarding terminal triggering on-demand DL PRS configuration, there are two configuration triggering methods:

the method comprises the following steps: and triggering the DL PRS configuration as required by using the reported quantity of the periodic DL PRS.

For the periodic DL PRS resources, the base station configures the terminal to report periodically, and the report volume carries information such as a TRP ID, a PRS resource set ID, a PRS resource RSRP, a precision and a delay quantization level, recommended on-demand DL PRS configuration information (such as a period, a bandwidth, a transmission pattern, repetition times, and the like), and/or a recommended on-demand DL PRS resource set.

When the periodic reported information of the base station is all 0, the PRS resource according to the requirement is not triggered, namely the base station considers that the periodic PRS can meet the positioning requirement of the terminal; otherwise, when the report volume carries information and the periodic PRS resource information, the base station determines the wide beam direction of the terminal according to the PRS resource ID and the PRS resource RSRP reported by the terminal, and triggers the on-demand DL PRS resource according to the precision and time delay quantization grade, the recommended on-demand DL PRS configuration information and/or the recommended on-demand DL PRS resource set.

When the base station receives a trigger request of a terminal, the base station needs to inform a positioning server, so that the positioning server can send a position information request aiming at the terminal, and the terminal can report a measurement result based on DL PRS (Downlink shared radio resource control) to the positioning server

The second method comprises the following steps: triggering on-demand DL PRS configuration with SR

For the periodic DL PRS resource, the base station configures the terminal to report periodically, and the reported quantity carries the TRP ID, the PRS resource set ID, the PRS resource ID and the PRS resource RSRP. Configuring an SR resource configuration (resource configuration) for triggering on-demand DL PRS for the terminal, wherein the terminal carries precision and latency quantization level information, on-demand DL PRS configuration information (such as periodicity, bandwidth, transmission pattern, repetition number, etc.) recommended based on self-demand and/or periodic DL PRS measurement results, and on-demand DL PRS resource sets recommended based on self-demand and/or periodic DL PRS measurement results in the SR.

When the base station receives the on-demand DL PRS SR, the base station considers that the periodic PRS cannot meet the positioning requirement of the terminal, the base station determines the wide beam direction of the terminal according to the PRS resource ID and the PRS resource RSRP reported by the periodic DL PRS, and triggers the on-demand DL PRS resource according to the precision and delay quantization level carried in the SR, the recommended on-demand DL PRS configuration information and/or the recommended on-demand DL PRS resource set.

When the base station receives the SR request of the terminal, the base station needs to inform the positioning server, so that the positioning server can send a position information request aiming at the terminal, and the terminal can report a measurement result based on the DL PRS as required to the positioning server.

For the two schemes, after receiving the on-demand DL PRS triggering request of the terminal, the base station activates/triggers on-demand PRS resources and reports by sending MAC-CE or Downlink Control Information (DCI). Similar to semi-persistent/aperiodic CSI-triggered reporting, the base station sends a MAC-CE/DCI activation/trigger PRS reporting set associated therewith, the PRS reporting set being associated with at least one PRS resource set.

Fig. 7 is a schematic structural diagram of a positioning reference signal determining apparatus according to an embodiment of the present invention; as shown in fig. 7, applied to a first network node, the apparatus includes:

Specifically, the location service request is initiated by a network and/or a terminal;

Specifically, the target device includes: a base station and a terminal;

the first communication module is configured to perform at least one of:

Specifically, the on-demand DL PRS resources are semi-persistent resources or aperiodic resources.

Specifically, the first communication module is configured to perform at least one of:

It should be noted that: in the positioning reference signal configuration apparatus provided in the foregoing embodiment, when implementing the corresponding positioning reference signal configuration method, the division of each program module is merely used for illustration, and in practical applications, the processing allocation may be completed by different program modules according to needs, that is, the internal structure of the first network node is divided into different program modules, so as to complete all or part of the processing described above. In addition, the apparatus provided in the above embodiments and the embodiments of the corresponding methods belong to the same concept, and specific implementation processes thereof are described in the method embodiments, and are not described herein again.

Fig. 8 is a schematic structural diagram of a positioning reference signal configuration triggering device according to an embodiment of the present invention; as shown in fig. 8, the apparatus, applied to a terminal, includes:

the second communication module is used for sending a position service request; the location service request is used for requesting DL PRS configuration information on demand; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

Specifically, the second communication module is configured to send an SR; the SR carries a location service request.

Specifically, the second communication module is further configured to send first resource information; the first resource information includes at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

Specifically, the location service request further carries at least one of the following:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

Specifically, the second communication module is further configured to receive a periodic reporting request from a base station before sending the location service request;

Specifically, the second communication module is further configured to perform at least one of:

Specifically, the second communication module is further configured to perform one of:

The apparatus may further include: and the second processing module is at least used for executing the positioning related processing operation.

It should be noted that: when the positioning reference signal configuration triggering device provided in the foregoing embodiment implements the corresponding positioning reference signal configuration triggering method, only the division of the foregoing program modules is used for illustration, and in practical applications, the processing may be distributed to different program modules according to needs, that is, the internal structure of the terminal is divided into different program modules, so as to complete all or part of the processing described above. In addition, the apparatus provided by the above embodiment and the embodiment of the corresponding method belong to the same concept, and the specific implementation process thereof is described in the method embodiment, which is not described herein again.

Fig. 9 is a schematic structural diagram of another positioning reference signal configuration triggering device according to an embodiment of the present invention; as shown in fig. 9, applied to a base station, the apparatus includes:

and receiving a location service request from the terminal; the location service request is used for requesting DL PRS configuration information on demand; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

Specifically, the third communication module is configured to receive an SR from a terminal; the SR carries a location service request.

Specifically, the third communication module is configured to receive first resource information; the first resource information includes at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

Specifically, the third communication module is further configured to send a notification message of a configuration result of the on-demand DL PRS resources to the positioning server, so that the terminal sends the measurement result of the on-demand DL PRS resources to the positioning server.

Specifically, the third processing module is configured to determine a wide beam direction of a terminal based on a PRS resource ID and a PRS resource RSRP from the terminal;

Specifically, the third processing module is configured to execute at least one of:

transmitting the DCI; the DCI is used to trigger an on-demand DL PRS resource set for a location service request;

transmitting the MAC-CE; the MAC-CE is configured to activate an on-demand DL PRS resource set for a location service request.

Specifically, the third communication module is configured to receive first on-demand DL PRS configuration information or indication information sent through an NRPPa protocol from a first network node;

It should be noted that: in the positioning reference signal configuration triggering apparatus provided in the foregoing embodiment, when implementing the corresponding positioning reference signal configuration triggering method, the division of each program module is merely used for illustration, and in practical applications, the processing may be allocated to be completed by different program modules according to needs, that is, the internal structure of the base station is divided into different program modules, so as to complete all or part of the processing described above. In addition, the apparatus provided by the above embodiment and the embodiment of the corresponding method belong to the same concept, and the specific implementation process thereof is described in the method embodiment, which is not described herein again.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present invention, and as shown in fig. 10, the communication device 100 includes: a processor 1001 and a memory 1002 for storing computer programs operable on the processor;

in one embodiment, the processor 1001 is applied to a network node, and when the processor 1001 is used to run the computer program, the processor is configured to perform: configuring on-demand DL PRS configuration information based on the location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; and sending the DL PRS configuration information as required to target equipment.

When the processor 1001 is configured to run the computer program, the step of the first network node performing the positioning reference signal configuration method in the embodiment of the present invention is also performed, and for brevity, no further description is provided here.

In another embodiment, the processor 1001 is applied to a terminal, and the computer program, when executed by the processor, performs: sending a location service request; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

When the processor 1001 is configured to run the computer program, the step of the terminal executing the positioning reference signal configuration triggering method in the embodiment of the present invention is also executed, and details are not described herein for brevity.

In yet another embodiment, the processor 1001 is applied to a base station, and the computer program, when executed by the processor, performs: sending a periodic reporting request to a terminal; receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; triggering an on-demand DL PRS resource based on the location service request.

When the processor 1001 is configured to run the computer program, the step of the base station performing the positioning reference signal configuration triggering method in the embodiment of the present invention is also performed, and for brevity, no further description is provided here.

In practical applications, the communication device 100 may further include: at least one network interface 1003. The various components of the communication device 100 are coupled together by a bus system 1004. It is understood that the bus system 1004 is used to enable communications among the components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for the sake of clarity the various busses are labeled in fig. 10 as the bus system 1004. The number of the processors 1001 may be at least one. The network interface 1003 is used for communication between the communication apparatus 100 and other apparatuses in a wired or wireless manner.

The memory 1002 in embodiments of the present invention is used to store various types of data to support the operation of the communication device 100.

The method disclosed by the embodiment of the present invention can be applied to the processor 1001, or can be implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The Processor 1001 may be a general purpose Processor, a DiGital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 1001 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. Soft

The modules may be located in a storage medium located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and performs the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the communication Device 100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored;

in one embodiment, the computer-readable storage medium is applied to a network node, and the computer program, when executed by a processor, performs: configuring on-demand DL PRS configuration information based on the location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; and sending the DL PRS configuration information as required to target equipment.

When the computer program is executed by the processor, the step of the first network node executing the method for configuring the positioning reference signal in the embodiment of the present invention is also executed, and for brevity, details are not described herein again.

In another embodiment, the computer-readable storage medium is applied to a terminal, and the computer program, when executed by a processor, performs: sending a location service request; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

When the computer program is executed by the processor, the step of the terminal executing the positioning reference signal configuration triggering method in the embodiment of the present invention is also executed, and details are not described herein for brevity.

In still another embodiment, the computer-readable storage medium is applied to a base station, and the computer program, when executed by a processor, performs: sending a periodic reporting request to a terminal; receiving a location service request from a terminal; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set; triggering an on-demand DL PRS resource based on the location service request.

When the computer program is executed by the processor, the step of the base station executing the positioning reference signal configuration triggering method in the embodiment of the present invention is also executed, and for brevity, the description is omitted here.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or in other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media capable of storing program code.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover 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 positioning reference signal configuration method applied to a first network node, the method comprising:

configuring on-demand downlink positioning reference signal DL PRS configuration information based on the location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

2. The method according to claim 1, wherein the location service request is initiated by a network and/or a terminal;

3. The method of claim 1, wherein the target device comprises: a base station and a terminal;

4. The method of claim 3, wherein the on-demand DL PRS resources are semi-persistent resources or non-periodic resources.

5. The method of claim 3, wherein the sending the on-demand DL PRS configuration information to a target device comprises at least one of:

and sending the first on-demand DL PRS configuration information to a terminal through a long term evolution positioning protocol (LPP).

6. A method for triggering configuration of a positioning reference signal is applied to a terminal, and the method comprises the following steps:

sending a location service request; the location service request is used for requesting on-demand DL PRS configuration information; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

7. The method of claim 6, wherein sending the location service request comprises:

sending an uplink scheduling request SR; the SR carries a location service request.

8. The method of claim 7, further comprising:

A receiving and transmitting node TRP identification ID, a PRS resource set ID, a PRS resource ID and a PRS resource reference signal received power RSRP.

9. The method of claim 6, wherein the location service request further carries at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

10. The method according to any of claims 6 to 9, wherein before said sending a location service request, the method further comprises:

receiving a periodic reporting request from a base station;

11. The method of claim 6, further comprising at least one of:

receiving downlink control information DCI from a base station; triggering an on-demand DL PRS resource set for a location service request according to the DCI;

media access control information MAC-CE from a base station is received, and an on-demand DL PRS resource set aiming at a position service request is activated according to the MAC-CE.

12. The method of claim 6, further comprising one of:

13. A positioning reference signal configuration triggering method is applied to a base station, and comprises the following steps:

sending a periodic reporting request to a terminal;

triggering an on-demand DL PRS resource based on the location service request.

14. The method of claim 13, wherein receiving the location service request from the terminal comprises:

receiving an uplink scheduling request SR from a terminal; the SR carries a location service request.

15. The method of claim 13, further comprising:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

16. The method of claim 13, wherein the location service request further carries at least one of:

TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

17. The method according to any one of claims 13 to 16, further comprising:

and sending a notification message of the configuration result of the on-demand DL PRS resource to a positioning server so that the terminal sends the positioning server based on the measurement result of the on-demand DL PRS resource.

18. The method of claim 15 or 16, wherein triggering on-demand DL PRS resources based on the location service request comprises:

19. The method of claim 18, wherein the triggering on-demand DL PRS resources for the location service request comprises at least one of:

sending downlink control information DCI to a terminal; the DCI is used to trigger an on-demand DL PRS resource set for a location service request;

Transmitting media access control information MAC-CE to a terminal; the MAC-CE is configured to activate an on-demand set of DL PRS resources for a location service request.

20. The method of claim 18, further comprising:

21. A positioning reference signal configuration apparatus, the apparatus comprising:

a first processing module for configuring on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of: delay requirements, precision requirements, recommended on-demand DL PRS configuration information and a recommended on-demand DL PRS resource set;

22. A positioning reference signal configuration triggering device, the device comprising:

23. A positioning reference signal configuration triggering device, the device comprising:

24. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any one of claims 1 to 5 are implemented when the program is executed by the processor;

The processor, when executing the program, implementing the steps of the method of any one of claims 6 to 12; alternatively, the first and second liquid crystal display panels may be,

the processor, when executing the program, performs the steps of the method of any of claims 13 to 20.

25. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5;

the computer program when executed by a processor implementing the steps of the method of any one of claims 6 to 12; alternatively, the first and second electrodes may be,

the computer program when executed by a processor implements the steps of the method of any one of claims 13 to 20.