A positioning reference signal configuration method and apparatus, a communication device and a storage medium

Abstract

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

Description

Technical Field

[0001] This invention relates to the field of wireless communication, and more particularly to a positioning reference signal (PRS) configuration method, configuration triggering method, apparatus, communication device, and storage medium. Background Technology

[0002] Communication protocol requirement 16 (R16, Release 16) only supports periodic configuration of the downlink (DL) PRS. Considering that communication protocol requirement 17 (R17, Release 17) will enhance positioning for indoor factory scenarios to achieve higher accuracy and lower latency, only supporting periodic DL PRS configuration will significantly increase the configuration overhead on the network side. To improve positioning accuracy, finer beam transmission is needed to improve the detection signal-to-noise ratio and beam granularity. Therefore, the positioning server needs to configure more DL PRS resources to support finer beam transmission.

[0003] In related technologies, the configuration of positioning-related reference signals is carried by the application layer protocols Long Term Evolution (LTE) Positioning Protocol (LPP) and NR Positioning Protocol Annex (NRPPa). On-demand DL PRS can only be configured and triggered by the positioning server through the higher-level protocols LPP and NRPPa, resulting in a long signaling process and large latency. Summary of the Invention

[0004] In view of this, the main objective of the present invention is to provide a positioning reference signal configuration method, a configuration triggering method, an apparatus, a communication device, and a storage medium.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] This invention provides a method for configuring a positioning reference signal, applied to a first network node, the method comprising:

[0007] Configure on-demand downlink positioning reference signal (DL PRS) configuration information based on location service requests; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0008] Send the on-demand DL PRS configuration information to the target device.

[0009] In the above scheme, the location service request is initiated by the network and / or the terminal;

[0010] Corresponding to the location service request being initiated by the network, the on-demand DL PRS configuration information is triggered by the second network node;

[0011] Corresponding to the location service request being initiated by the terminal, the on-demand DL PRS configuration information is triggered by the terminal.

[0012] In the above scheme, the target equipment includes: a base station and a terminal;

[0013] Sending the on-demand DL PRS configuration information to the target device includes at least one of the following:

[0014] Send the first on-demand DL PRS configuration information to the terminal and / or base station;

[0015] Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0016] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0017] In the above scheme, the on-demand DL PRS resource is a semi-persistent resource or an aperiodic resource.

[0018] In the above scheme, sending the on-demand DL PRS configuration information to the target device includes at least one of the following:

[0019] The first on-demand DL PRS configuration information or the indication information is sent to the base station via the NRPPa protocol; the base station determines the third on-demand DL PRS configuration information based on the indication information, and sends the third on-demand DL PRS configuration information to the terminal via the Radio Resource Control (RRC) protocol;

[0020] The first on-demand DL PRS configuration information is sent to the terminal via LPP.

[0021] This invention provides a method for configuring and triggering a positioning reference signal, applied to a terminal. The method includes:

[0022] Send a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0023] In the above scheme, sending the location service request includes:

[0024] Send an uplink scheduling request (SR); the SR carries a location service request.

[0025] The method in the above scheme further includes:

[0026] Send first resource information; the first resource information includes at least one of the following:

[0027] Transmission and Receiving Points (TRP) Identifier (ID), PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Receiving Power (RSRP).

[0028] In the above scheme, the location service request also carries at least one of the following:

[0029] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0030] In the above scheme, before sending the location service request, the method further includes:

[0031] Receive periodic reporting requests from the base station;

[0032] Based on the periodic reporting request, send the location service request; or, based on the periodic reporting request, send the location service request and the first resource information.

[0033] The above scheme, the method further includes at least one of the following:

[0034] Receive downlink control information (DCI) from the base station; trigger on-demand DL PRS resource sets for location service requests based on the DCI;

[0035] Receive medium access control information (MAC-CE) from the base station, and activate the on-demand DL PRS resource set for the location service request based on the MAC-CE.

[0036] The above scheme, the method further includes one of the following:

[0037] Receive third-on-demand DL PRS configuration information sent from the base station via the RRC protocol;

[0038] Receive the first on-demand DL PRS configuration information sent via LPP from the first network node;

[0039] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0040] This invention provides a positioning reference signal configuration triggering method, applied to a base station, the method comprising:

[0041] Send periodic reporting requests to the terminal;

[0042] Receive a location service request from a terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0043] Based on the location service request, trigger on-demand DL PRS resources.

[0044] In the above scheme, receiving a location service request from the terminal includes:

[0045] Receive an SR from the terminal; the SR carries a location service request.

[0046] The method in the above scheme further includes:

[0047] Receive first resource information; the first resource information includes at least one of the following:

[0048] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0049] In the above scheme, the location service request also carries at least one of the following:

[0050] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0051] The method in the above scheme further includes:

[0052] A notification message indicating the configuration results of on-demand DL PRS resources is sent to the positioning server, so that the terminal sends the measurement results based on the on-demand DL PRS resources to the positioning server.

[0053] In the above scheme, triggering on-demand DL PRS resources based on the location service request includes:

[0054] The wide beam direction of the terminal is determined based on the PRS resource ID and PRS resource RSRP from the terminal.

[0055] Based on the location service request, trigger on-demand DL PRS resources for the location service request.

[0056] In the above scheme, the on-demand DL PRS resource that triggers the location service request includes at least one of the following:

[0057] Send a DCI to the terminal; the DCI is used to trigger an on-demand DL PRS resource set in response to a location service request;

[0058] Send a MAC-CE to the terminal; the MAC-CE is used to activate the on-demand DL PRS resource set for the location service request.

[0059] The method in the above scheme further includes:

[0060] Receive the first on-demand DL PRS configuration information or indication information sent from the first network node via the NRPPa protocol;

[0061] The indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0062] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0063] This invention provides a positioning reference signal configuration device, the device comprising:

[0064] The first processing module is used to configure on-demand DL PRS configuration information based on location service requests; the location service requests include at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

[0065] The first communication module is used to send the on-demand DL PRS configuration information to the target device.

[0066] In the above scheme, the location service request is initiated by the network and / or the terminal;

[0067] Corresponding to the location service request being initiated by the network, the on-demand DL PRS configuration information is triggered by the second network node;

[0068] Corresponding to the location service request being initiated by the terminal, the on-demand DL PRS configuration information is triggered by the terminal.

[0069] In the above scheme, the target equipment includes: a base station and a terminal;

[0070] The first communication module is configured to perform at least one of the following:

[0071] Send the first on-demand DL PRS configuration information to the terminal and / or base station;

[0072] Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0073] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0074] In the above scheme, the on-demand DL PRS resource is a semi-persistent resource or an aperiodic resource.

[0075] In the above scheme, the first communication module is configured to perform at least one of the following:

[0076] The first on-demand DL PRS configuration information or the indication information is sent to the base station via the NRPPa protocol; the base station determines the third on-demand DL PRS configuration information based on the indication information, and sends the third on-demand DL PRS configuration information to the terminal via the RRC protocol;

[0077] The first on-demand DL PRS configuration information is sent to the terminal via LPP.

[0078] This invention provides a positioning reference signal configuration triggering device, the device comprising:

[0079] The second communication module is used to send a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0080] In the above scheme, the second communication module is used to send an SR; the SR carries a location service request.

[0081] In the above scheme, the second communication module is further configured to send first resource information; the first resource information includes at least one of the following:

[0082] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0083] In the above scheme, the location service request also carries at least one of the following:

[0084] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0085] In the above scheme, the second communication module is also used to receive periodic reporting requests from the base station before sending a location service request;

[0086] Based on the periodic reporting request, send the location service request; or, based on the periodic reporting request, send the location service request and the first resource information.

[0087] In the above scheme, the second communication module is further configured to perform at least one of the following:

[0088] Receive DCI from the base station; trigger on-demand DL PRS resource set for location service requests based on the DCI;

[0089] Receive MAC-CE from the base station, and activate the on-demand DL PRS resource set for the location service request based on the MAC-CE.

[0090] In the above scheme, the second communication module is also used to perform one of the following:

[0091] Receive third-on-demand DL PRS configuration information sent from the base station via the RRC protocol;

[0092] Receive the first on-demand DL PRS configuration information sent via LPP from the first network node;

[0093] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0094] This invention provides a positioning reference signal configuration triggering device, the device comprising:

[0095] The third communication module is used to send periodic reporting requests to the terminal;

[0096] In addition, it receives a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0097] The third processing module is used to trigger on-demand DL PRS resources based on the location service request.

[0098] In the above scheme, the third communication module is used to receive the SR; the SR carries a location service request.

[0099] In the above scheme, the third communication module is used to receive first resource information; the first resource information includes at least one of the following:

[0100] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0101] In the above scheme, the location service request also carries at least one of the following:

[0102] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0103] In the above scheme, the third communication module is also used to send a notification message of the configuration result of the on-demand DL PRS resource to the positioning server, so that the terminal sends the measurement result on demand based on the on-demand DL PRS to the positioning server.

[0104] In the above scheme, the third processing module is used to determine the wide beam direction of the terminal based on the PRS resource ID and PRS resource RSRP from the terminal;

[0105] Based on the location service request, trigger on-demand DL PRS resources for the location service request.

[0106] In the above scheme, the third processing module is used to perform at least one of the following:

[0107] Send DCI; the DCI is used to trigger the on-demand DL PRS resource set for the location service request;

[0108] Send MAC-CE; the MAC-CE is used to activate the on-demand DL PRS resource set for the location service request.

[0109] In the above scheme, the third communication module is used to receive the first on-demand DL PRS configuration information or indication information sent from the first network node via the NRPPa protocol;

[0110] The indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0111] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0112] This invention provides a communication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of any of the positioning reference signal configuration methods described in the first network node method.

[0113] When the processor executes the program, it implements any one of the steps of the positioning reference signal configuration method on the terminal side; or...

[0114] When the processor executes the program, it implements the steps of any one of the positioning reference signal configuration methods on the base station side.

[0115] This invention provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of any of the positioning reference signal configuration methods described in the first network node side;

[0116] When the computer program is executed by the processor, it implements the steps of any one of the positioning reference signal configuration methods described in the terminal-side method; or...

[0117] When the computer program is executed by the processor, it implements the steps of any of the positioning reference signal configuration methods described in the base station side.

[0118] The present invention provides a positioning reference signal configuration method, apparatus, and storage medium. On one hand, a first network node configures on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set; the on-demand DL PRS configuration information is sent to a target device. On the other hand, a terminal sends a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set. Furthermore, a base station sends a periodic reporting request to the terminal; receives a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set; based on the location service request, DL PRS resources are triggered. The technical solution of this invention enables on-demand DL PRS configuration, ensuring positioning accuracy while minimizing reference signal configuration overhead. Attached Figure Description

[0119] Figure 1 A flowchart illustrating the configuration method for DL ​​PRS;

[0120] Figure 2 A diagram illustrating the configuration overhead comparison in a scenario of periodic DL PRS configuration;

[0121] Figure 3 A flowchart illustrating a positioning reference signal configuration method provided in an embodiment of the present invention;

[0122] Figure 4 A flowchart illustrating a positioning reference signal configuration triggering method provided in an embodiment of the present invention;

[0123] Figure 5 A flowchart illustrating another positioning reference signal configuration triggering method provided in an embodiment of the present invention;

[0124] Figure 6 A schematic diagram of an on-demand DL PRS resource provided in an embodiment of the present invention;

[0125] Figure 7 This is a schematic diagram of a positioning reference signal configuration device provided in an embodiment of the present invention;

[0126] Figure 8 This is a schematic diagram of a positioning reference signal configuration triggering device provided in an embodiment of the present invention;

[0127] Figure 9 A schematic diagram of another positioning reference signal configuration triggering device provided in an embodiment of the present invention;

[0128] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present invention. Detailed Implementation

[0129] The present invention will be further described in detail below with reference to the embodiments, starting with a description of the relevant technologies.

[0130] The following section first explains the DL PRS configuration in the relevant technologies;

[0131] In Release 16 (R16), DL PRS is defined to support air interface positioning for UEs. Since the New Radio (NR) has multi-beam capabilities, the DL PRS defined in R16 can be transmitted using beam scanning by configuring multiple DL PRS resources within a single resource configuration set. When the transmission direction of a certain beam is aligned with the terminal, the terminal can detect the arrival time of this line-of-sight path, effectively improving the accuracy of the terminal's estimation of the reference signal arrival time.

[0132] In R16, the configuration period supported by the DL PRS resource is 2μ{4,5,8,10,16,20,32,40,64,80,160,320,640,1280,2560,5120,10240}, where μ=0,1,2,3 represent the subcarrier spacing used by DL PRS as 15kHz, 30kHz, 60kHz, and 120kHz, respectively.

[0133] The DL PRS configuration process is as follows: DL PRS for downlink measurements performed by the terminal is directly configured by the Location Server and carried by the higher-level LTE Positioning Protocol (LPP). The configuration process is as follows: Figure 1 As shown, it includes:

[0134] 1. The positioning server requests positioning capabilities from the terminal (UE) based on LPP;

[0135] 2. The terminal provides positioning capabilities based on LPP;

[0136] 3. The positioning server sends auxiliary information for positioning to the terminal, including information such as the cell ID for measurement and the reference signal configuration;

[0137] 4. The location server sends a request for location information to the terminal;

[0138] 5. The terminal begins to measure the reference signal time difference (RSTD) or the signal transmission and reception time difference (Rx-Tx time difference) and reports the measured data.

[0139] R16 DL PRS only supports periodic configuration. Considering that R17 positioning will be enhanced for indoor factory scenarios to achieve higher accuracy and lower latency positioning capabilities (e.g., horizontal positioning accuracy <0.2m, positioning latency <100ms), only supporting periodic DL PRS configuration will significantly increase the configuration overhead on the network side. Figure 2 A diagram illustrating the network-side configuration overhead in a scenario involving periodic DL PRS configuration; as shown. Figure 2 As shown, to improve positioning accuracy, finer beam transmission is needed to enhance the detection signal-to-noise ratio and beam granularity. Therefore, the positioning server needs to configure more DL PRS resources to support finer beam transmission. Furthermore, currently, the configuration of positioning-related reference signals is carried by the application layer protocols LPP and NRPPa. On-demand DL PRS can still only be configured and triggered by the positioning server through higher-level protocols LPP and NRPPa. In other words, the above solution introduces problems such as high DL PRS configuration overhead and long configuration process latency.

[0140] Based on this, in this embodiment of the invention, on one hand, a first network node configures on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set; and sends the on-demand DL PRS configuration information to the target device; on the other hand, a terminal sends a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set; and further on, a base station sends a periodic reporting request to the terminal; receives a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended on-demand DL PRS resource set; and triggers DL PRS resources based on the location service request.

[0141] The present invention will be further described in detail below with reference to the embodiments.

[0142] Figure 3This is a flowchart illustrating a positioning reference signal configuration method provided in an embodiment of the present invention; as shown below. Figure 3 As shown, the positioning reference signal configuration method is applied to a first network node, which is specifically a node providing positioning services, and may be a positioning server; the positioning server has a Location Management Function (LMF) module for processing location server requests; the method includes:

[0143] Step 301: Configure on-demand DL PRS configuration information based on location services request; the location services request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0144] Step 302: Send the on-demand DL PRS configuration information to the target device.

[0145] In one embodiment, before configuring on-demand DL PRS configuration information based on location service requests, the method may further include:

[0146] Receive location service requests;

[0147] Processing the location service request; wherein, processing the location service request includes at least: determining at least one of the following included in the location service request: latency requirement, accuracy requirement, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0148] The processing of location service requests may further include: determining whether to trigger on-demand DL PRS configuration based on latency requirements and accuracy requirements.

[0149] For example, the terminal determines that its required positioning accuracy is <1m. By detecting the periodic DL PRS, the terminal finds that its RSRP is poor or the timing correlation peak is flat, which cannot meet the positioning accuracy requirements.

[0150] The terminal's end-to-end positioning latency requirement is <100ms, while the periodic DL PRS configuration period is 160ms, which cannot meet the positioning latency requirement.

[0151] In the above situation, it can be determined that on-demand DL PRS resource configuration needs to be triggered.

[0152] In one embodiment, the target device includes: a base station and a terminal;

[0153] Sending the on-demand DL PRS configuration information to the target device includes at least one of the following:

[0154] Send the first on-demand DL PRS configuration information to the terminal and / or base station;

[0155] Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0156] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources;

[0157] That is, the first on-demand DL PRS configuration information may include: at least one set of on-demand DL PRS resources;

[0158] The second on-demand DL PRS configuration information may include: at least one set of on-demand DL PRS resources;

[0159] 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.

[0160] The number of on-demand DL PRS transmissions represents the number of transmissions of the corresponding group of on-demand DL PRS resources.

[0161] The duration of the configuration represents the duration that the DL PRS resources can last after being configured according to the corresponding group on demand.

[0162] The bandwidth refers to the bandwidth corresponding to the on-demand DL PRS resources of the corresponding group.

[0163] The resource type refers to the resource type of the corresponding group of on-demand DL PRS resources; here, the on-demand DL PRS resources are semi-persistent resources or aperiodic resources. That is, the resource type includes: semi-persistent resources and aperiodic resources.

[0164] In one embodiment, the on-demand DL PRS resources included in the on-demand DL PRS resource set are semi-persistent resources or aperiodic resources.

[0165] The semi-persistent resource characterization on-demand DL PRS resource can be activated and deactivated by MAC-CE. During the activation period, the on-demand DL PRS resource is continuously applied with a certain configuration cycle.

[0166] The non-periodic resource characterizes the on-demand DL PRS resource, which can be triggered by DCI. The on-demand DL PRS resource has no concept of period and is not repeatedly applied; it is only applied at a certain transmission opportunity.

[0167] Specifically, the information sent to the base station can be divided into two categories;

[0168] One type is on-demand DL PRS configuration information; here, the on-demand DL PRS resource configuration is determined based on the Location Management Function (LMF) and sent to the base station via NRPPa (and also to the terminal via LPP). The base station sends the information and the terminal receives it according to how the LMF is configured.

[0169] Another type is the indication information; here the LMF will only give the base station a recommended configuration (carried in the indication information), including bandwidth, period, etc. The specific configuration information is determined by the base station itself. After the determination, the configuration can be sent to the terminal through Radio Resource Control (RRC) signaling (at this time, the base station will also feed back the final configuration to the LMF).

[0170] In one embodiment, the location service request is initiated by the network and / or the terminal;

[0171] Since the location service request is initiated by the network, the corresponding on-demand DL PRS configuration information is triggered by the second network node;

[0172] As the location service request is initiated by the terminal, the corresponding on-demand DL PRS configuration information is triggered by the terminal.

[0173] Here, the triggering configuration positioning reference signal can be implemented by different devices; for example, it can be a terminal requesting positioning (such as in positioning scenarios where a map is needed); it can also be a network (such as a second network node, which can be a network-side client (5GC client) or a core network access and mobility management function (AMF)). For example, in scenarios such as the FCC 911 emergency call, when a terminal makes an emergency call, the core network initiates a location service request to the positioning server to request the terminal's location information.

[0174] In one embodiment, sending the on-demand DL PRS configuration information to the target device includes at least one of the following:

[0175] The first on-demand DL PRS configuration information or the indication information is sent to the base station via the NRPPa protocol; the base station determines the third on-demand DL PRS configuration information based on the indication information, and sends the third on-demand DL PRS configuration information to the terminal via the RRC protocol;

[0176] The first on-demand DL PRS configuration information is sent to the terminal via LPP.

[0177] Here, the first network node sends the on-demand DL PRS configuration information, either before or after the request.

[0178] Sending on-demand DL PRS configuration information before the request can be understood as the location server or base station first configuring one or more sets of on-demand DL PRS configurations using higher-layer protocols. When the terminal has a need, it sends a location service request (physical layer process), triggering one or more of the configurations. After receiving the request, the base station starts sending, and the terminal starts receiving and measuring.

[0179] Further explanations regarding the first, second, and third on-demand DL PRS configuration information are as follows:

[0180] The first on-demand DL PRS configuration information is a set of explicit configuration information that allows the terminal (i.e., when the corresponding on-demand DL PRS configuration information is triggered by the terminal) or the base station (i.e., when the corresponding on-demand DL PRS configuration information is triggered by the base station) to determine how to configure based on this configuration information.

[0181] The information carried by the instruction message can be one or more sets of explicit configuration information, or it can be a broad configuration; specifically,

[0182] The information carried by the indication information is a broad configuration, specifically referring to: the indication information carrying at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; correspondingly, after obtaining the indication information, the base station can autonomously determine specific configuration information based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information. That is, based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information, the base station can autonomously determine specific third on-demand DL PRS configuration information that meets the requirements of the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information.

[0183] Of course, the information carried by the indication information can 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. The base station can select one set according to the second on-demand DL PRS configuration information as the third on-demand DL PRS configuration information, that is, the base station specifies how to configure it.

[0184] Each set of on-demand DL PRS configuration information here may include: at least one set of on-demand DL PRS resources.

[0185] In one embodiment, the location service request may also carry at least one of the following:

[0186] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0187] In one embodiment, the method may further include:

[0188] Receive first resource information; the first resource information includes at least one of the following:

[0189] Transmission and Receiving Points (TRP) Identifier (ID), PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Receiving Power (RSRP).

[0190] Figure 4 This is a flowchart illustrating a positioning reference signal configuration triggering method provided in an embodiment of the present invention; as shown below. Figure 4 As shown, the method is applied to a terminal, which can be a mobile phone, smartphone, laptop computer, digital radio receiver, personal digital assistant (PDA), tablet computer (PAD), portable multimedia player (PMP), wearable device (such as smart bracelet, smartwatch, etc.), navigation device, etc.; the method includes:

[0191] Step 401: Send a location service request;

[0192] The location service request is used to request on-demand DL PRS configuration information;

[0193] The location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0194] The recommended on-demand DL PRS configuration information and recommended on-demand DL PRS resource set can specifically be requested by the terminal from the positioning server based on its own positioning needs and / or periodic DL PRS measurement results.

[0195] In one embodiment, sending a location service request includes: sending an uplink scheduling request (SR); the SR carries the location service request.

[0196] In one embodiment, the method further includes:

[0197] Send first resource information; the first resource information includes at least one of the following:

[0198] Transmission and Receiving Points (TRP) Identifier (ID), PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Receiving Power (RSRP).

[0199] In one embodiment, the location service request further carries at least one of the following:

[0200] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0201] In other words, the terminal can send at least one of the following to the base station: latency requirement, accuracy requirement, recommended on-demand DL PRS configuration information, recommended on-demand DL PRS resource set, TRP ID, PRS resource set ID, PRS resource ID, and PRS RSRP.

[0202] In one embodiment, before sending the location service request, the method further includes:

[0203] Receive periodic reporting requests from the base station;

[0204] Based on the periodic reporting request, send the location service request; or, based on the periodic reporting request, send the location service request and the first resource information.

[0205] In one embodiment, the method further includes one of the following:

[0206] Receive downlink control information (DCI) from the base station; trigger on-demand DL PRS resource sets for location service requests based on the DCI;

[0207] Receive medium access control information (MAC-CE) from the base station, and activate the on-demand DL PRS resource set for the location service request based on the MAC-CE.

[0208] In one embodiment, the method further includes:

[0209] Step 402: Receive on-demand DL PRS configuration information.

[0210] Specifically, step 402 includes at least one of the following:

[0211] Receive third-on-demand DL PRS configuration information sent from the base station via the RRC protocol;

[0212] Receive the first on-demand DL PRS configuration information sent via LPP from the first network node;

[0213] The first on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources;

[0214] The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0215] The first network node can be a location server.

[0216] Further explanations regarding the first, second, and third on-demand DL PRS configuration information are as follows:

[0217] The first on-demand DL PRS configuration information is a set of explicit configuration information, which allows the terminal or base station to determine how to configure itself.

[0218] The information carried by the instruction message can be one or more sets of explicit configuration information, or it can be a broad configuration; specifically,

[0219] The information carried by the indication information is a broad configuration, specifically referring to: the indication information carrying at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; correspondingly, after obtaining the indication information, the base station can autonomously determine specific configuration information based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information. That is, based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information, the base station can autonomously determine specific third on-demand DL PRS configuration information that meets the requirements of the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information.

[0220] Of course, the information carried by the indication information can 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. The base station can select one set according to the second on-demand DL PRS configuration information as the third on-demand DL PRS configuration information, that is, the base station specifies how to configure it.

[0221] Each set of on-demand DL PRS configuration information here may include: at least one set of on-demand DL PRS resources.

[0222] Figure 5 A flowchart illustrating another positioning reference signal configuration triggering method provided in an embodiment of the present invention; as shown below. Figure 5 As shown, the method is applied to a base station, and the method includes:

[0223] Step 501: Send a periodic reporting request to the terminal;

[0224] Step 502: Receive a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0225] Step 503: Based on the location service request, trigger on-demand DL PRS resources.

[0226] In one embodiment, receiving a location service request from a terminal includes: receiving an SR from the terminal; the SR carrying the location service request.

[0227] In one embodiment, the method further includes:

[0228] Receive first resource information; the first resource information includes at least one of the following:

[0229] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0230] In one embodiment, the location service request further carries at least one of the following:

[0231] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0232] In one embodiment, the method further includes:

[0233] A notification message indicating the configuration results of on-demand DL PRS resources is sent to the positioning server, enabling the terminal to send measurement results based on the on-demand DL PRS resources to the positioning server.

[0234] Specifically, when the base station receives a trigger request from the terminal, it needs to notify the positioning server so that the positioning server can send a location information request for the terminal, and the terminal can report the measurement results based on on-demand DL PRS resources to the positioning server.

[0235] In one embodiment, triggering on-demand DL PRS resources based on the location service request includes:

[0236] The wide beam direction of the terminal is determined based on the PRS resource ID and PRS resource RSRP from the terminal.

[0237] Based on the location service request, trigger on-demand DL PRS resources for the location service request.

[0238] Specifically, the base station determines the wide beam direction of the terminal based on the PRS resource ID and PRS resource RSRP reported periodically by DL PRS, and triggers on-demand DL PRS resources based on the precision and time delay quantization level carried in SR.

[0239] In one embodiment, the on-demand DL PRS resource that triggers the location service request includes at least one of the following:

[0240] Send a DCI to the terminal; the DCI is used to trigger an on-demand DL PRS resource set in response to a location service request;

[0241] Send a MAC-CE to the terminal; the MAC-CE is used to activate the on-demand DL PRS resource set for the location service request.

[0242] Specifically, when a base station receives an on-demand DL PRS trigger request from a terminal, it can send a DCI to activate on-demand DL PRS resources and report them. Similar to aperiodic CSI trigger reporting, the base station sends a DCI to trigger a PRS-OndemandTriggerState, thereby activating its associated PRS reporting set, which is associated with at least one PRS resource set.

[0243] In one embodiment, the method further includes:

[0244] Receive the first on-demand DL PRS configuration information or indication information sent from the network node via the NRPPa protocol;

[0245] The indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0246] The first on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources;

[0247] The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0248] Further explanations regarding the first, second, and third on-demand DL PRS configuration information are as follows:

[0249] The first on-demand DL PRS configuration information is a set of explicit configuration information, which allows the terminal or base station to determine how to configure itself.

[0250] The information carried by the instruction message can be one or more sets of explicit configuration information, or it can be a broad configuration; specifically,

[0251] The information carried by the indication information is a broad configuration, specifically referring to: the indication information carrying at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; correspondingly, after obtaining the indication information, the base station can autonomously determine specific configuration information based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information. That is, based on at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information, the base station can autonomously determine specific third on-demand DL PRS configuration information that meets the requirements of the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type carried by the indication information.

[0252] Of course, the information carried by the indication information can 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. The base station can select one set according to the second on-demand DL PRS configuration information as the third on-demand DL PRS configuration information, that is, the base station specifies how to configure it.

[0253] Each set of on-demand DL PRS configuration information here may include: at least one set of on-demand DL PRS resources.

[0254] Through the above Figure 3 , Figure 4 , Figure 5 The method shown in this embodiment of the invention provides a scheme for on-demand DL PRS configuration triggered by a network (such as the aforementioned base station or a network element in the network) / terminal. This scheme can ensure positioning accuracy while also taking into account low reference signal configuration overhead, thus solving the problems of large configuration overhead and long configuration delay in existing schemes.

[0255] The on-demand DL PRS triggering configuration methods provided in this embodiment of the invention include the following two types:

[0256] One type is configured by the location server through application layer protocols, without involving physical layer processes;

[0257] Another type is configured by the location server through application layer protocols and activated / triggered through physical layer processes, as follows:

[0258] I. Configuration by the positioning server through higher-level protocols, specifically including:

[0259] (1) Based on the network side's performance / location requirements, the network side requests on-demand DL PRS configuration:

[0260] When a client (i.e., a second network node) initiates a location service request, the location server (i.e., a first network node) can determine whether on-demand DL PRS needs to be configured based on the accuracy and latency requirements of the location service requested. If it is determined that on-demand DL PRS is required, the on-demand DL PRS configuration information is sent to the base station and the terminal respectively through the NRPPa and LPP protocols.

[0261] In the On-Demand DL PRS configuration information, the time-domain resource type of On-Demand DL PRS can be semi-persistent or aperiodic.

[0262] (2) Based on the positioning requirements of the terminal, the terminal requests on-demand DL PRS configuration:

[0263] When a client inside the terminal initiates a location service request, the location server can determine whether on-demand DL PRS needs to be configured based on the accuracy and latency requirements of the location service requested. If so, the on-demand DL PRS configuration information is sent to the base station and the terminal respectively via NRPPa and LPP protocols.

[0264] In the On-Demand DL PRS configuration information, the time-domain resource type of On-Demand DL PRS can be semi-persistent or aperiodic.

[0265] II. Configuration triggered by physical layer processes, specifically including:

[0266] The positioning server sends on-demand DL PRS configuration information to the base station and terminal via NRPPa and LPP protocols; or, the positioning server sends on-demand DL PRS configuration information or recommended on-demand DL PRS configuration information to the base station via NRPPa protocol. The base station can independently decide on-demand DL PRS configuration and use NRPPa protocol to feed back to the positioning server, and use RRC signaling to send the on-demand DL PRS configuration information to the terminal.

[0267] The on-demand DL PRS configuration information includes: one or more sets of on-demand DL PRS resources.

[0268] For the location server side, the specific details are as follows:

[0269] The location server makes a judgment based on the location service request (including the accuracy and latency requirements of the location service) requested by the network side / terminal side, or the measurement results of the periodic DL PRS. When the periodic DL PRS configuration cannot meet the performance requirements of the location service, it notifies the base station corresponding to the serving cell to activate semi-persistent on-demand DL PRS for the corresponding terminal using the physical layer process, or triggers non-periodic DL PRS.

[0270] The semi-persistent on-demand DL PRS is activated by the base station corresponding to the serving cell using MAC-CE, or non-periodic on-demand DL PRS is triggered using DCI.

[0271] For the terminal side, the specific explanation is as follows:

[0272] The terminal makes a judgment based on the accuracy and latency requirements of the positioning service requested by the terminal's internal application, or the measurement results of the periodic DL PRS. When the periodic DL PRS configuration cannot meet the performance requirements of the positioning service, it uses the physical layer process to request the base station corresponding to the serving cell to activate / trigger the on-demand DL PRS.

[0273] Specifically, the terminal judges the configuration and measurement results of the periodic DL PRS based on the positioning accuracy and latency requirements. When it is determined that the measurement results of the periodic DL PRS cannot meet the accuracy and / or latency requirements, the base station is triggered to configure on-demand DL PRS for it.

[0274] For example, the terminal determines that its required positioning accuracy is <1m. By detecting the periodic DL PRS, the terminal finds that its RSRP is poor or the timing correlation peak is flat, which cannot meet the positioning accuracy requirements.

[0275] Alternatively, the terminal's end-to-end positioning latency requirement is <100ms, while the periodic DL PRS configuration period is 160ms, which cannot meet the positioning latency requirement;

[0276] In the corresponding situation, the terminal uses the physical layer process to quickly trigger the base station to configure on-demand DL PRS resources for it. The base station configures more detailed on-demand DL PRS resources for the terminal in the wide beam direction where the terminal is located.

[0277] Figure 6 This is a schematic diagram of an on-demand DL PRS resource provided in an embodiment of the present invention; in the diagram, LMF represents a location service request, gNB represents a base station, and UE represents a terminal. Based on Figure 6 It can be seen that on-demand PRS with narrow beams can improve accuracy and reduce latency.

[0278] Regarding terminal-triggered on-demand DL PRS configuration, there are two configuration triggering methods:

[0279] Method 1: Trigger on-demand DL PRS configuration using the periodic DL PRS reporting volume.

[0280] For periodic DL PRS resources, the base station configures the terminal to periodically report the information, including TRP ID, PRS resource set ID, PRS resource ID, PRS resource RSRP, accuracy and time delay quantization level, recommended on-demand DL PRS configuration information (e.g., period, bandwidth, transmission pattern, number of repetitions, etc.), and / or recommended on-demand DL PRS resource set.

[0281] When the periodic reported information to the base station is all 0, on-demand PRS resources are not triggered, meaning the base station considers the periodic PRS to be sufficient to meet the terminal's positioning needs. Otherwise, when the reported information carries the aforementioned periodic PRS resource information, the base station determines the terminal's wide beam direction based on the PRS resource ID and PRS resource RSRP reported by the terminal, and triggers on-demand DL PRS resources based on the accuracy and time delay quantization level, the recommended on-demand DL PRS configuration information, and / or the recommended on-demand DL PRS resource set.

[0282] When the base station receives a trigger request from the terminal, it needs to notify the positioning server so that the positioning server can send a location information request for the terminal, and the terminal can report the measurement results based on on-demand DL PRS to the positioning server.

[0283] Method 2: Utilize SR to trigger on-demand DL PRS configuration

[0284] For periodic DL PRS resources, the base station configures the terminal to periodically report them, carrying the TRP ID, PRS resource set ID, PRS resource ID, and PRS resource RSRP in the reported data. The base station also configures the SR resource configuration for the terminal to trigger on-demand DL PRS. The terminal carries the accuracy and latency quantization level information, on-demand DL PRS configuration information recommended based on its own needs and / or periodic DL PRS measurement results (e.g., period, bandwidth, transmission pattern, repetition count, etc.), and the on-demand DL PRS resource set recommended based on its own needs and / or periodic DL PRS measurement results in the SR.

[0285] When the base station receives the on-demand DL PRS SR, it considers that the periodic PRS cannot meet the terminal's positioning needs. The base station determines the terminal's wide beam direction based on the PRS resource ID and PRS resource RSRP reported by the periodic DL PRS, and triggers on-demand DL PRS resources based on the accuracy and time delay quantization level, recommended on-demand DL PRS configuration information, and / or recommended on-demand DL PRS resource set carried in the SR.

[0286] When the base station receives an SR request from the terminal, it needs to notify the positioning server so that the positioning server can send a location information request for the terminal and the terminal can report the measurement results based on DL PRS to the positioning server.

[0287] For both schemes mentioned above, when the base station receives the on-demand DL PRS trigger request from the terminal, it will send MAC-CE or downlink control information (DCI) to activate / trigger the on-demand PRS resources and report them. Similar to semi-persistent / aperiodic CSI trigger reporting, the base station sends MAC-CE / DCI to activate / trigger its associated PRS reporting set, which is associated with at least one PRS resource set.

[0288] Figure 7 This is a schematic diagram of a positioning reference signal determination device provided in an embodiment of the present invention; as shown below. Figure 7 As shown, the device, applied to a first network node, includes:

[0289] The first processing module is used to configure on-demand DL PRS configuration information based on location service requests; the location service requests include at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets.

[0290] The first communication module is used to send the on-demand DL PRS configuration information to the target device.

[0291] Specifically, the location service request is initiated by the network and / or the terminal;

[0292] Corresponding to the location service request being initiated by the network, the on-demand DL PRS configuration information is triggered by the second network node;

[0293] Corresponding to the location service request being initiated by the terminal, the on-demand DL PRS configuration information is triggered by the terminal.

[0294] Specifically, the target equipment includes: a base station and a terminal;

[0295] The first communication module is configured to perform at least one of the following:

[0296] Send the first on-demand DL PRS configuration information to the terminal and / or base station;

[0297] Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0298] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0299] Specifically, the on-demand DL PRS resource is a semi-persistent resource or a non-periodic resource.

[0300] Specifically, the first communication module is configured to perform at least one of the following:

[0301] The first on-demand DL PRS configuration information or the indication information is sent to the base station via the NRPPa protocol; the base station determines the third on-demand DL PRS configuration information based on the indication information, and sends the third on-demand DL PRS configuration information to the terminal via the RRC protocol;

[0302] The first on-demand DL PRS configuration information is sent to the terminal via LPP.

[0303] It should be noted that the positioning reference signal configuration device provided in the above embodiments is only illustrated by the division of the above program modules when implementing the corresponding positioning reference signal configuration method. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the first network node can be divided into different program modules to complete all or part of the processing described above. In addition, the device and the corresponding method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0304] Figure 8 This is a schematic diagram of a positioning reference signal configuration triggering device provided in an embodiment of the present invention; as shown below. Figure 8 As shown, the device, applied to a terminal, includes:

[0305] The second communication module is used to send a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0306] Specifically, the second communication module is used to send an SR; the SR carries a location service request.

[0307] Specifically, the second communication module is further configured to send first resource information; the first resource information includes at least one of the following:

[0308] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0309] Specifically, the location service request also carries at least one of the following:

[0310] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0311] Specifically, the second communication module is also used to receive periodic reporting requests from the base station before sending a location service request;

[0312] Based on the periodic reporting request, send the location service request; or, based on the periodic reporting request, send the location service request and the first resource information.

[0313] Specifically, the second communication module is also configured to perform at least one of the following:

[0314] Receive DCI from the base station; trigger on-demand DL PRS resource set for location service requests based on the DCI;

[0315] Receive MAC-CE from the base station, and activate the on-demand DL PRS resource set for the location service request based on the MAC-CE.

[0316] Specifically, the second communication module is also used to perform one of the following:

[0317] Receive third-on-demand DL PRS configuration information sent from the base station via the RRC protocol;

[0318] Receive the first on-demand DL PRS configuration information sent via LPP from the first network node;

[0319] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0320] The device may further include: a second processing module, at least for performing positioning-related processing operations.

[0321] It should be noted that the positioning reference signal configuration triggering device provided in the above embodiments is only illustrated by the division of the above program modules when implementing the corresponding positioning reference signal configuration triggering method. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the terminal can be divided into different program modules to complete all or part of the processing described above. In addition, the device and the corresponding method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0322] Figure 9 This is a schematic diagram of another positioning reference signal configuration triggering device provided in an embodiment of the present invention; as shown below. Figure 9 As shown, the device is applied to a base station and includes:

[0323] The third communication module is used to send periodic reporting requests to the terminal;

[0324] In addition, it receives a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set;

[0325] The third processing module is used to trigger on-demand DL PRS resources based on the location service request.

[0326] Specifically, the third communication module is used to receive an SR from the terminal; the SR carries a location service request.

[0327] Specifically, the third communication module is configured to receive first resource information; the first resource information includes at least one of the following:

[0328] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0329] Specifically, the location service request also carries at least one of the following:

[0330] TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

[0331] Specifically, the third communication module is also used to send a notification message of the 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.

[0332] Specifically, the third processing module is used to determine the wide beam direction of the terminal based on the PRS resource ID and PRS resource RSRP from the terminal;

[0333] Based on the location service request, trigger on-demand DL PRS resources for the location service request.

[0334] Specifically, the third processing module is configured to perform at least one of the following:

[0335] Send DCI; the DCI is used to trigger the on-demand DL PRS resource set for the location service request;

[0336] Send MAC-CE; the MAC-CE is used to activate the on-demand DL PRS resource set for the location service request.

[0337] Specifically, the third communication module is used to receive first on-demand DL PRS configuration information or indication information sent from the first network node via the NRPPa protocol;

[0338] The indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information;

[0339] The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

[0340] It should be noted that the positioning reference signal configuration triggering device provided in the above embodiments is only illustrated by the division of the above program modules when implementing the corresponding positioning reference signal configuration triggering method. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the base station can be divided into different program modules to complete all or part of the processing described above. In addition, the device and the corresponding method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0341] Figure 10 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present invention, such as... Figure 10 As shown, the communication device 100 includes: a processor 1001 and a memory 1002 for storing computer programs capable of running on the processor;

[0342] In one embodiment, the processor 1001 is applied to a network node, and when the processor 1001 runs the computer program, it performs the following: configuring on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; and sending the on-demand DL PRS configuration information to the target device.

[0343] When the processor 1001 runs the computer program, it also executes the steps of the first network node executing the positioning reference signal configuration method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0344] In another embodiment, the processor 1001 is applied to a terminal, and when the computer program is run by the processor, it executes: sending a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0345] When the processor 1001 runs the computer program, it also executes the steps of the terminal execution positioning reference signal configuration triggering method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0346] In another embodiment, the processor 1001 is applied to a base station. When the computer program is run by the processor, it performs the following: sending a periodic reporting request to a terminal; receiving a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; and triggering on-demand DL PRS resources based on the location service request.

[0347] When the processor 1001 runs the computer program, it also executes the steps of the base station execution positioning reference signal configuration triggering method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0348] 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 via a bus system 1004. It is understood that the bus system 1004 is used to implement communication between these components. In addition to a data bus, the bus system 1004 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 10 All buses are labeled as bus system 1004. The number of processors 1001 can be at least one. Network interface 1003 is used for wired or wireless communication between communication device 100 and other devices.

[0349] The memory 1002 in this embodiment of the invention is used to store various types of data to support the operation of the communication device 100.

[0350] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 1001. Processor 1001 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above methods can be completed by integrated logic circuits in the hardware of processor 1001 or by instructions in software form. Processor 1001 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 1001 can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor.

[0351] The module can be located in a storage medium, which is located in memory 1002. The processor 1001 reads the information in memory 1002 and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0352] 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, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned method.

[0353] This invention also provides a computer-readable storage medium having a computer program stored thereon;

[0354] In one embodiment, the computer-readable storage medium is applied to a network node, and the computer program, when executed by a processor, performs the following: configuring on-demand DL PRS configuration information based on a location service request; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and a recommended set of on-demand DL PRS resources; and sending the on-demand DL PRS configuration information to a target device.

[0355] When the computer program is run by the processor, it also executes the steps of the first network node executing the positioning reference signal configuration method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0356] In another embodiment, the computer-readable storage medium is applied to a terminal, and the computer program, when executed by a processor, performs the following: sending a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set.

[0357] When the computer program is run by the processor, it also executes the steps of the terminal execution positioning reference signal configuration triggering method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0358] In another embodiment, the computer-readable storage medium is applied to a base station, and the computer program, when executed by a processor, performs the following: sending a periodic reporting request to a terminal; receiving a location service request from the terminal; the location service request being used to request on-demand DL PRS configuration information; the location service request including at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; and triggering on-demand DL PRS resources based on the location service request.

[0359] When the computer program is run by the processor, it also executes the steps of the base station execution positioning reference signal configuration triggering method in this embodiment of the invention. For the sake of brevity, these steps will not be described in detail here.

[0360] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0361] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0362] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0363] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0364] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0365] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0366] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0367] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A positioning reference signal configuration method, characterized by, Applied to a first network node, the method includes: Configure on-demand downlink positioning reference signal (DL PRS) configuration information based on location service requests; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; The on-demand DL PRS configuration information is sent to the target device; the target device includes a base station, and the first network node sends the on-demand DL PRS configuration information before the location service request is sent. Sending the on-demand DL PRS configuration information to the target device includes: The system sends an indication message to the base station; the indication message instructs the base station to configure DL PRS resources on demand; the indication message carries at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication message carries second on-demand DL PRS configuration information, the second on-demand DL PRS configuration information including: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by Media Access Control Information (MAC-CE), and during the activation time, the on-demand DL PRS resources are configured for periodic persistent application; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by Downlink Control Information (DCI), and the on-demand DL PRS resources are not repeatedly applied. The location service request is initiated by the network, and the on-demand DL PRS configuration information is triggered by the second network node.

2. The method according to claim 1, characterized in that, The location service request is initiated by the network and / or the terminal; Corresponding to the location service request being initiated by the terminal, the on-demand DL PRS configuration information is triggered by the terminal.

3. The method according to claim 1, characterized in that, The target device also includes a terminal; Sending the on-demand DL PRS configuration information to the target device further includes: Send the first on-demand DL PRS configuration information to the terminal and / or base station; The first on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

4. The method according to claim 3, characterized in that, Sending the on-demand DL PRS configuration information to the target device includes at least one of the following: The first on-demand DL PRS configuration information or the indication information is sent to the base station via the NRPPa protocol; the base station determines the third on-demand DL PRS configuration information based on the indication information, and sends the third on-demand DL PRS configuration information to the terminal via the Radio Resource Control (RRC) protocol; The first on-demand DL PRS configuration information is sent to the terminal via the Long Term Evolution Positioning Protocol (LPP).

5. A method for configuring triggering a positioning reference signal, characterized in that, Applied to a terminal, the method includes: Send a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; The on-demand DL PRS configuration information is sent to the target device by the first network node in the following manner; the target device includes a base station, before the location service request is sent. Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information; The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by MAC-CE, and during the activation time, the on-demand DL PRS resources are applied continuously according to the configuration period; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by DCI, and the on-demand DL PRS resources are not applied repeatedly. The location service request also carries at least one of the following: Transceiver Node TRP Identifier ID, PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Received Power RSRP. The PRS Resource ID and PRS Resource RSRP are used to determine the wide beam direction of the terminal, so that the base station configures on-demand DL PRS resources for the terminal in the wide beam direction where the terminal is located.

6. The method according to claim 5, characterized in that, The sending of the location service request includes: Send an uplink scheduling request (SR); the SR carries a location service request.

7. The method according to claim 6, characterized in that, The method further includes: Send first resource information; the first resource information includes at least one of the following: TRP ID, PRS resource set ID, PRS resource ID, PRS resource RSRP.

8. The method according to any one of claims 5 to 7, characterized in that, Before sending the location service request, the method further includes: Receive periodic reporting requests from the base station; Based on the periodic reporting request, send the location service request; or, based on the periodic reporting request, send the location service request and the first resource information.

9. The method according to claim 5, characterized in that, The method further includes at least one of the following: Receive downlink control information (DCI) from the base station; trigger on-demand DL PRS resource sets for location service requests based on the DCI; Receive Media Access Control Information (MAC-CE) from the base station, and activate the on-demand DL PRS resource set for the location service request based on the MAC-CE.

10. The method according to claim 5, characterized in that, The method also includes one of the following: Receive third-on-demand DL PRS configuration information sent from the base station via the RRC protocol; Receive the first on-demand DL PRS configuration information sent via LPP from the first network node; The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

11. A method for configuring triggering a positioning reference signal, characterized in that, Applied to a base station, the method includes: Send periodic reporting requests to the terminal; A location service request is received from a terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; the on-demand DL PRS configuration information is sent before the location service request is sent. Based on the location service request, trigger on-demand DL PRS resources; The method further includes: The system receives an indication message sent via the NRPPa protocol from a first network node; the indication message is used to instruct the base station to configure DL PRS resources on demand; the indication message carries at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication message carries second on-demand DL PRS configuration information. The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by MAC-CE, and during the activation time, the on-demand DL PRS resources are applied continuously according to the configuration period; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by DCI, and the on-demand DL PRS resources are not applied repeatedly. The location service request also carries at least one of the following: Transceiver Node TRP Identifier ID, PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Received Power RSRP. The PRS Resource ID and PRS Resource RSRP are used to determine the wide beam direction of the terminal, so that the base station configures on-demand DL PRS resources for the terminal in the wide beam direction where the terminal is located.

12. The method according to claim 11, characterized in that, Receiving a location service request from a terminal includes: Receive an uplink scheduling request (SR) from the terminal; the SR carries a location service request.

13. The method according to claim 11, characterized in that, The method further includes: Receive first resource information; the first resource information includes at least one of the following: TRP ID, PRS resource set ID, PRS resource ID, PRS RSRP.

14. The method according to any one of claims 11 to 13, characterized in that, The method further includes: A notification message indicating the configuration results of on-demand DL PRS resources is sent to the positioning server, so that the terminal sends the measurement results based on the on-demand DL PRS resources to the positioning server.

15. The method according to claim 11 or 13, characterized in that, The triggering of on-demand DL PRS resources based on the location service request includes: The wide beam direction of the terminal is determined based on the PRS resource ID and PRS resource RSRP from the terminal. Based on the location service request, trigger on-demand DL PRS resources for the location service request.

16. The method according to claim 15, characterized in that, The on-demand DL PRS resource that triggers the location service request includes at least one of the following: Send downlink control information (DCI) to the terminal; the DCI is used to trigger the on-demand DL PRS resource set for the location service request; Send Media Access Control Information (MAC-CE) to the terminal; the MAC-CE is used to activate the on-demand DL PRS resource set for location service requests.

17. The method according to claim 15, characterized in that, The method further includes: Receive the first on-demand DL PRS configuration information sent from the first network node via the NRPPa protocol; The corresponding on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources.

18. A positioning reference signal configuration device, characterized in that, The device includes: The first processing module is used to configure on-demand DL PRS configuration information based on location service requests; the location service requests include at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource sets. A first communication module is used to send the on-demand DL PRS configuration information to a target device; the target device includes a base station, and the first network node sends the on-demand DL PRS configuration information before the location service request is sent; The first communication module is specifically used for: The system sends an indication message to the base station; the indication message instructs the base station to configure DL PRS resources on demand; the indication message carries at least one of the following: the number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication message carries second on-demand DL PRS configuration information, the second on-demand DL PRS configuration information including: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by MAC-CE, and during the activation time, the on-demand DL PRS resources are configured for periodic persistent application; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by DCI, and the on-demand DL PRS resources are not repeatedly applied. The location service request is initiated by the network, and the on-demand DL PRS configuration information is triggered by the second network node.

19. A positioning reference signal configuration triggering device, characterized in that, The device includes: The second communication module is used to send a location service request; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set. The on-demand DL PRS configuration information is sent to the target device by the first network node in the following manner; the target device includes a base station, before the location service request is sent. Send indication information to the base station; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information; The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by MAC-CE, and during the activation time, the on-demand DL PRS resources are applied continuously according to the configuration period; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by DCI, and the on-demand DL PRS resources are not applied repeatedly. The location service request also carries at least one of the following: Transceiver Node TRP Identifier ID, PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Received Power RSRP. The PRS Resource ID and PRS Resource RSRP are used to determine the wide beam direction of the terminal, so that the base station configures on-demand DL PRS resources for the terminal in the wide beam direction where the terminal is located.

20. A positioning reference signal configuration triggering device, characterized in that, The device includes: The third communication module is used to send periodic reporting requests to the terminal; In addition, the system receives a location service request from the terminal; the location service request is used to request on-demand DL PRS configuration information; the location service request includes at least one of the following: latency requirements, accuracy requirements, recommended on-demand DL PRS configuration information, and recommended on-demand DL PRS resource set; the on-demand DL PRS configuration information is sent before the location service request is sent. The third processing module is used to trigger on-demand DL PRS resources based on the location service request. The third communication module is further configured to receive indication information sent from the first network node via the NRPPa protocol; the indication information is used to instruct the base station to configure DL PRS resources on demand; the indication information carries at least one of the following: number of on-demand DL PRS transmissions, duration, bandwidth, and resource type; or, the indication information carries second on-demand DL PRS configuration information. The second on-demand DL PRS configuration information includes: at least one set of on-demand DL PRS resources; the on-demand DL PRS resources are semi-persistent resources or aperiodic resources; the semi-persistent resources indicate that the on-demand DL PRS resources are activated and deactivated by MAC-CE, and during the activation time, the on-demand DL PRS resources are applied continuously according to the configuration period; the aperiodic resources indicate that the on-demand DL PRS resources are triggered by DCI, and the on-demand DL PRS resources are not applied repeatedly. The location service request also carries at least one of the following: Transceiver Node TRP Identifier ID, PRS Resource Set ID, PRS Resource ID, and PRS Resource Reference Signal Received Power RSRP. The PRS Resource ID and PRS Resource RSRP are used to determine the wide beam direction of the terminal, so that the base station configures on-demand DL PRS resources for the terminal in the wide beam direction where the terminal is located.

21. A communication device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1 to 4; When the processor executes the program, it implements the steps of the method according to any one of claims 5 to 10; or... When the processor executes the program, it implements the steps of the method according to any one of claims 11 to 17.

22. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 4; When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 5 to 10; or... When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 11 to 17.

Images