CN113518301B

CN113518301B - Positioning reference signal configuration method, LMF, terminal and base station

Info

Publication number: CN113518301B
Application number: CN202010275598.0A
Authority: CN
Inventors: 李健翔; 任晓涛; 全海洋; 傅婧; 张大钧
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2022-10-21
Anticipated expiration: 2040-04-09
Also published as: CN113518301A

Abstract

The embodiment of the invention provides a positioning reference signal configuration method, an LMF, a terminal and a base station, wherein the method comprises the following steps: receiving a first message sent by each target base station and a second message sent by a terminal, wherein the first message carries a first space mapping reference signal of a TRP (channel map) under the target base station, the second message carries a second space mapping reference signal of a service cell and/or an adjacent cell of the terminal, and the target base station comprises the service base station and an adjacent cell base station corresponding to the TRP in a preset TRP list; obtaining a target TRP based on the first space mapping reference signal and the second space mapping reference signal; and sending a third message carrying a spatial mapping reference signal corresponding to the target TRP to the terminal, wherein the spatial mapping reference signal corresponding to the target TRP is used for determining the uplink positioning reference signal transmitting direction, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP. The invention improves the positioning precision of uplink positioning.

Description

Positioning reference signal configuration method, LMF, terminal and base station

Technical Field

The invention relates to the technical field of communication, in particular to a positioning reference signal configuration method, an LMF, a terminal and a base station.

Background

One of the problems of the uplink positioning method is how to measure the channel Sounding Reference Signal (SRS-Pos) transmitted by the terminal by using each Transmit Receive Point (TRP) distributed around the terminal. However, in the conventional NR system, a positioning method based on UpLink Time Difference of Arrival (UpLink-TDOA) and UpLink Angle of Arrival (UpLink Angle-of-Arrival) of a wireless network is not supported, and there is no clear spatial direction indication, so a scheme is required to enable TRPs belonging to neighboring cells around a terminal to accurately measure an UpLink positioning SRS signal transmitted to the terminal, and further improve the positioning accuracy of the UpLink positioning method.

Disclosure of Invention

The embodiment of the invention provides a positioning reference signal configuration method, an LMF, a terminal and a base station, so as to improve the positioning accuracy in uplink positioning.

The embodiment of the invention provides a positioning reference signal configuration method, which is applied to a positioning management function entity (LMF) and comprises the following steps:

receiving a first message sent by each target base station, and receiving a second message sent by a terminal, wherein the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset sending receiving point TRP list under the target base station, the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of the terminal, and the target base station comprises the serving base station and the adjacent cell base station corresponding to the TRP in the preset TRP list;

selecting a target TRP from a preset TRP list based on the first space mapping reference signal and the second space mapping reference signal;

and sending a third message to the terminal, wherein the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmission direction of an uplink positioning reference signal, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

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

sending a second message to a Location Management Function (LMF), wherein the second message carries a second spatial mapping reference signal of a serving cell and/or a neighboring cell of the terminal;

receiving a third message sent by an LMF, wherein the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmitting direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset TRP sending and receiving point list by an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF by a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

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

and sending a first message to a Location Management Function (LMF), wherein the first message carries a first spatial mapping reference signal of a TRP (channel map) in a preset sending and receiving point (TRP) list under a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

The embodiment of the invention provides a positioning reference signal configuration device, which is applied to a positioning management function entity (LMF) and comprises the following steps:

a receiving module, configured to receive a first message sent by each target base station, and receive a second message sent by a terminal, where the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset sending reception point TRP list under the target base station, the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of the terminal, and the target base station includes the serving base station and an adjacent cell base station corresponding to the TRP in the preset TRP list;

an obtaining module, configured to select a target TRP from a preset TRP list based on the first spatial mapping reference signal and the second spatial mapping reference signal;

a sending module, configured to send a third message to the terminal, where the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine a transmission direction of an uplink positioning reference signal, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

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

a sending module, configured to send a second message to a location management function entity LMF, where the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of a terminal;

the receiving module is used for receiving a third message sent by the LMF, wherein the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmitting direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset TRP sending and receiving point list by an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF by a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

The embodiment of the invention provides a positioning reference signal configuration device, which is applied to a target base station and comprises the following components:

the sending module is used for sending a first message to a Location Management Function (LMF), wherein the first message carries a first space mapping reference signal of a TRP (channel map) in a preset sending and receiving point (TRP) list under a target base station, and the target base station comprises a serving base station and a neighboring base station corresponding to the TRP in the preset TRP list.

The embodiment of the invention provides an LMF (location reference function), which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of a positioning reference signal configuration method applied to the LMF when executing the program.

The embodiment of the invention provides a terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of a positioning reference signal configuration method applied to the terminal.

The embodiment of the invention provides a target base station, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of a positioning reference signal configuration method applied to the target base station.

An embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the positioning reference signal configuration method.

According to the positioning reference signal configuration method, the LMF, the terminal and the base station provided by the embodiment of the invention, by receiving the first message sent by each target base station and the second message sent by the terminal, wherein the first message carries the first space mapping reference signal corresponding to the TRP in the preset TRP list of the target base station, and the second message carries the second space mapping reference signal of the serving cell and/or the adjacent cell of the terminal, then the target TRP is selected from the preset TRP list based on the obtained first space mapping reference signal and the second space mapping reference signal of each TRP, and the third message carrying the space mapping reference signal corresponding to the target TRP is sent to the terminal, so that the terminal can send the uplink positioning reference signal based on the space mapping reference signal corresponding to the target TRP, the SRS of the adjacent cell base station can be directionally transmitted, the TRP of the adjacent cell base station can also accurately measure the uplink positioning reference signal sent by the terminal, and the network positioning reference signal of the TRP can be more accurately-Pos, and the directional measurement accuracy of the SRS of the uplink positioning reference signal can be further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a flow chart illustrating the steps of a positioning reference signal configuration method applied to an LMF according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating steps of a positioning reference signal configuration method applied to a terminal according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating steps of a positioning reference signal configuration method applied to a target base station according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of interaction between an LMF and a terminal according to an embodiment of the present invention;

figure 5 is a schematic diagram of interaction between an LMF and a target base station in an embodiment of the present invention;

FIG. 6 is a block diagram of a positioning reference signal configuration apparatus applied to an LMF according to an embodiment of the present invention;

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

fig. 8 is a block diagram of a positioning reference signal configuration apparatus applied to a target base station in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal in an embodiment of the present invention;

FIG. 10 is a schematic diagram of the AMF structure in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a target base station in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in each embodiment of the present invention, if words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and actions, those skilled in the art can understand that the words such as "first" and "second" do not limit the quantity and execution order.

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "three types" generally indicates that the former and latter associated objects are in an "or" relationship.

The term "plurality" in the embodiments of the present invention means two or more, and other terms are similar thereto.

Furthermore, it should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Specifically, in a radio network positioning-based flow in R16 NR positioning, a positioning Management Function entity (LMF) sends positioning assistance information required by a terminal to the terminal, and sends the positioning assistance information to the terminal through a Lightweight Presentation Protocol (LPP) over an air interface; the LPP of the Non-Access Stratum (NAS) of the terminal receives the auxiliary data for processing.

The LPP protocol is an interface protocol between a terminal and an LMF server for transmitting data between the terminal and a network, and includes, but is not limited to: positioning assistance data required by the terminal, such as configuration information of a positioning reference signal; and the measurement report provided by the terminal is used for the LMF to calculate and estimate the position of the positioning algorithm and other related information.

In addition, in the network-based uplink positioning NR UL-TDOA method, the serving base station first configures time and frequency resources for transmitting an uplink positioning reference signal ((SRS-Pos)) to the terminal, and notifies the LMF of the configuration information of the SRS-Pos. And the LMF sends the configuration information of the SRS-Pos to TRPs around the terminal. And each TRP detects the SRS-Pos transmitted by the terminal according to the configuration information of the SRS-Pos and acquires the relative time difference (UL RTOA) between the SRS-Pos arrival time and the TRP self reference time. UL-TDOA generally employs a network-based positioning approach, i.e., each TRP transmits the measured UL RTOA to the LMF, and the LMF calculates the location of the terminal using the UL RTOA provided by each TRP and other known information (e.g., the geographical coordinates of the TRP).

In the network-based uplink positioning UL AoA method, each TRP needs to receive SRS-Pos sent by a terminal according to SRS-Pos configuration information provided by an LMF, acquire UL AoA (which can comprise A-AoA and Z-AoA), and report the acquired UL AoA to the LMF. The LMF calculates the location of the terminal using the UL AoA provided by each TRP and other known information (e.g., the geographical coordinates of the TRP).

One of the problems of the network-based uplink positioning method is how to measure the SRS-Pos signals of the terminals by the TRPs surrounding the terminals. If the terminal is only allowed to transmit the SRS-Pos in the beam scanning mode, the disadvantage is two-sided, on one hand, the power consumption of the terminal is very high, and because there is no target direction, omnidirectional beam scanning is required; on the other hand, the terminal has limited transmission gain, which results in less TRP quantity and insufficient accuracy for receiving the uplink reference signal, and increases the detection delay. In addition, because the base station does not know the incoming wave direction of the terminal in the beam scanning mode, the scanning mode reduces the receiving efficiency, resulting in increased time delay. The limitation that the serving gNB can only configure the TRP uplink space to which the serving gNB belongs, and cannot configure the TRPs belonging to other neighboring cells, is that the serving gNB performs uplink spatial direction indication based on the serving gNB.

In summary, the present invention provides the following embodiments based on the problem that the number of TRPs for receiving uplink reference signals is small and the accuracy is not high enough because the terminal cannot transmit reference signals in a certain direction in the prior art:

as shown in fig. 1, which is a flowchart illustrating steps of a positioning reference signal configuration method applied to an LMF in an embodiment of the present invention, the method includes the following steps:

step 101: and receiving a first message sent by each target base station and receiving a second message sent by the terminal.

Specifically, the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset TRP list under the target base station, and the second message carries a second spatial mapping reference signal of a serving cell and/or a neighboring cell of the terminal.

In addition, the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

Specifically, the number of the target base stations may be multiple, at this time, the LMF may receive a first message sent by each target base station, and certainly for each target base station, the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset TRP list under the target base station. That is, the first message sent by the serving base station to the LMF may carry the first spatial mapping reference signal belonging to the TRP in the TRP list in the serving base station, and the first message sent by the neighboring base station to the LMF may carry the first spatial mapping reference signal belonging to the TRP in the TRP list in the neighboring base station. At this time, the LMF may receive first messages sent by the serving base station and the neighboring base station as the target base station, respectively.

Of course, it should be further noted that the number of TRPs belonging to the pre-set TRP list under each target base station is not limited herein.

Further, the first message may be an NR POSITIONING protocol a POSITIONING INFORMATION RESPONSE (NRPPa POSITIONING INFORMATION RESPONSE) message, and the second message may be an LPP message.

In addition, the adjacent base station is corresponding to the TRP based on the TRP existing in the preset TRP list, so that the TRP information except the service base station is brought into the consideration range of the target TRP for positioning, and the positioning precision of the uplink positioning method is further improved.

Step 102: and selecting a target TRP from a preset TRP list based on the first space mapping reference signal and the second space mapping reference signal.

Specifically, after obtaining the information from the target base station and the terminal, the LMF may synthesize a first spatial mapping reference signal of each TRP from the target base station and a second spatial mapping reference signal of the terminal, select a suitable TRP, that is, the target TRP, from a preset TRP list, and determine a spatial mapping reference signal corresponding to the target TRP.

Specifically, the target TRP is the TRP used for the present localization.

Step 103: and sending a third message to the terminal, wherein the third message carries the spatial mapping reference signal corresponding to the target TRP.

Specifically, the spatial mapping reference signal corresponding to the target TRP is used to determine the transmission direction of the uplink positioning reference signal, so that the terminal can send the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP after receiving the third message, thereby implementing directional sending of the uplink positioning reference signal, and enabling the TRP of the neighboring base station to accurately measure the uplink positioning reference SRS signal sent by the terminal.

Further, specifically, the third message may be an LPP message. Of course, it should be noted that the LPP message may be an LPP message corresponding to a positioning method adopted by the current positioning.

Thus, the LMF in this embodiment receives a first message sent by each target base station, receives a second message sent by the terminal, where the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset TRP list of the target base station, and the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of the terminal, and then selects the target TRP from the preset TRP list based on the obtained first spatial mapping reference signal and the obtained second spatial mapping reference signal of each TRP, and sends a third message carrying the spatial mapping reference signal corresponding to the target TRP to the terminal, so that the terminal can send an uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP, thereby implementing that the terminal can directionally transmit signals for both the TRP of the serving base station and the TRP of the adjacent cell, and the TRP of the base station can also accurately measure the uplink positioning reference signal sent by the terminal, which is beneficial to more accurate SRS-Pos measurement of the network, thereby further improving the positioning accuracy of uplink positioning.

Specifically, in this embodiment, after selecting a target TRP from a preset TRP list based on a first spatial mapping reference signal and a second spatial mapping reference signal, the LMF may further send a fourth message to the target base station, where the fourth message carries the spatial mapping reference signal corresponding to the target TRP, so that the target base station measures the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP, thereby implementing that the TRPs of the serving base station and the neighboring base station serving as the target base station can accurately measure the uplink positioning reference signal sent by the terminal, which is further beneficial to more accurate SRS-Pos measurement by the network, and further improving the positioning accuracy of uplink positioning.

In addition, in this embodiment, when receiving a first message sent by each target base station, the LMF may send a first request message to each target base station, where the first request message carries indication information requesting the target base station to feed back a first spatial mapping reference signal of each TRP in a preset TRP list; and then receives a first message sent by each target base station based on the first request message.

Specifically, the first REQUEST message may be an NRPPa POSITIONING INFORMATION REQUEST (NRPPa POSITIONING INFORMATION REQUEST) message.

That is, after receiving the location service request, the LMF may initiate a first request message to the serving base station and the neighboring base station corresponding to each TRP in the preset TRP list according to the location service quality requirement and the current network state, and request the base stations to provide the recommended spatial mapping reference signal of each TRP in the TRP list, or the configuration information of the relevant SSB and SRS-Pos reference signals. And then the service base station and each adjacent base station respond to the LMF request and recommend the required spatial mapping reference signals of each TRP under each base station to the LMF.

In addition, in this embodiment, when receiving a second message sent by the terminal, the LMF may send a second request message to the terminal, where the second request message carries indication information requesting the terminal to feed back a second spatial mapping reference signal of the serving cell and/or the neighboring cell; and then receiving a second message sent by the terminal based on the second request message.

Specifically, the second request message may be an LPP request message.

In addition, specifically, the LMF initiates a second request message to the terminal, and requests the terminal to recommend a second spatial mapping reference signal of the serving cell and/or the neighboring cell thereof; and after receiving the second request message, the terminal scans beams, searches all the surrounding detected adjacent cell SSB signals, sorts the signals according to the signal quality of the signals, and lists the indexes of the previously detected serving cell and the adjacent cell SSB and the corresponding RSRP. In addition, the terminal may also determine, in combination with the information of the downlink PRS, SRS-R15, and SRS-R16 that have been used once, a spatial mapping reference signal of the serving cell and/or the neighboring cell where the recommendation is located, for example, SSB and SSB index of the serving cell or the neighboring cell, information of the downlink PRS, SRS-R15, SRS-R16, and the like of the serving cell or the neighboring cell. And finally, the terminal directly sends the recommendation information to the LMF through a second message, namely the LPP message.

In addition, on the basis of the above embodiment, the first spatially mapped reference signal includes any one or a combination of the following information:

synchronization Signal Blocks (SSBs) and SSB indices of serving cell and/or neighbor cell;

a downlink Positioning Reference Signal (PRS);

a channel sounding reference signal (SRS-R15) of a R15 version protocol of a serving cell;

a channel sounding reference signal (SRS-R16) of a R16 version protocol of a serving cell;

a channel state information reference signal (CSI-RS) of a serving cell and a resource identifier corresponding to the CSI-RS.

It should be noted here that the downlink PRS may be downlink DRSs of respective TRPs under the serving base station and the neighboring base station.

Furthermore, the second spatially mapped reference signal comprises any one or a combination of the following information:

a Physical Cell Identity (PCI), an SSB index and Reference Signal Received Power (RSRP) corresponding to the SSB index of a serving cell and/or a neighboring cell;

downlink PRS of a serving cell and/or a neighboring cell, TRP identification corresponding to the downlink PRS, resource identification corresponding to the downlink PRS and RSRP corresponding to the downlink PRS;

SRS-R15 of the serving cell;

SRS-R16 of the serving cell;

the CSI-RS of the service cell and the resource identification corresponding to the CSI-RS.

Thus, the LMF in this embodiment serves as a central management unit, comprehensively collects various auxiliary information from the terminal, the serving cell and the neighboring cell, and performs uplink spatial relationship management in a unified manner, so that the TRP information outside the serving base station is taken into the TRP consideration range for positioning, a relatively accurate reference signal configuration spatial manner is determined, and the spatial mapping relationship of the uplink positioning reference signal most suitable for the positioning manner is determined and sent to the terminal, so that the terminal can perform directional transmission of the uplink positioning reference signal based on the received spatial mapping relationship of the uplink positioning reference signal, and thus the selected target TRP can perform better reception on the uplink positioning reference signal, and the efficiency and accuracy of network measurement of the UL SRS-Pos signal are improved.

In addition, as shown in fig. 2, a flowchart of the steps of the positioning reference signal configuration method applied to the terminal in the embodiment of the present invention is shown, where the method includes the following steps:

step 201: and sending a second message to the LMF.

Specifically, the second message carries a second spatial mapping reference signal of a serving cell and/or a neighboring cell of the terminal.

Specifically, the terminal sends the second message to the LMF, so that the LMF can select the target TRP from the preset TRP list by using the second message as a reference, and sends the spatial mapping reference signal corresponding to the target TRP to the terminal.

Step 202: and receiving a third message sent by the LMF.

Specifically, the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine the transmission direction of the uplink positioning reference signal, so that the terminal can perform directional transmission of the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP, and the problems in the prior art that the power consumption is high when the terminal transmits the SRS-Pos in a beam scanning manner, the number of TRPs receiving the uplink reference signal is very limited, and the measurement accuracy is not high enough are avoided.

In addition, specifically, the target TRP is selected by the LMF from a preset TRP list based on the first spatial mapping reference signal and the second spatial mapping reference signal, the first spatial mapping reference signal is sent to the LMF by the target base station, and the target base station includes the serving base station and a neighboring base station corresponding to the TRP in the preset TRP list.

It should be noted that, the relevant content of the third message may refer to the relevant content of the LMF-side method, and is not described herein again.

In addition, in this embodiment, when the terminal sends a second message to the LMF, the terminal may receive a second request message sent by the LMF, where the second request message carries indication information requesting the terminal to feed back a second spatial mapping reference signal of the serving cell and/or the neighboring cell; a second message is then sent to the LMF based on the second request message.

It should be noted that, the relevant content of the above process may refer to the relevant content of the target base station side method, and is not described herein again.

In addition, in this embodiment, after receiving the third message sent by the LMF, the terminal may also send the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP, thereby implementing directional sending of the uplink positioning reference signal.

Specifically, on the basis of the above embodiment, the first spatially mapped reference signal includes any one or a combination of the following information: SSB and SSB index of the service cell and/or the neighboring cell; descending PRS; SRS-R15 of the serving cell; SRS-R16 of the serving cell; and the CSI-RS of the serving cell and the resource identifier corresponding to the CSI-RS.

PCI and SSB indexes of a serving cell and/or a neighboring cell and RSRP corresponding to the SSB indexes; downlink PRS of a serving cell and/or a neighboring cell, TRP marks corresponding to the downlink PRS, resource marks corresponding to the downlink PRS and RSRP corresponding to the downlink PRS; SRS-R15 of the serving cell; SRS-R16 of the serving cell; and the CSI-RS of the serving cell and the resource identifier corresponding to the CSI-RS.

It should be noted that, the relevant content of the first spatial mapping reference signal and the second spatial mapping reference signal may refer to the relevant content of the LMF side method, and is not described herein again.

In this way, the terminal in this embodiment receives the third message carrying the spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine the transmission direction of the uplink positioning reference signal, so that the terminal can transmit the SRS-Pos signal in the designated direction according to the network requirement, thereby avoiding the problems in the prior art that the terminal consumes a large amount of power when performing omnidirectional or beam scanning transmission, the number of TRPs receiving the uplink reference signal is very limited, and the measurement accuracy is not high enough, and improving the positioning accuracy of the uplink positioning method.

In addition, as shown in fig. 3, a flowchart of a method for configuring a positioning reference signal applied to a target base station in an embodiment of the present invention is shown, where the method includes the following steps:

step 301: a first message is sent to the LMF.

Specifically, the target base station sends a first message to the LMF, and the target base station includes a serving base station and a neighboring base station corresponding to the TRP in a preset TRP list.

In addition, specifically, the first message carries a first spatial mapping reference signal of a TRP in a preset TRP list under the target base station, so that the LMF can select the target TRP from the preset TRP list based on the first spatial mapping reference signal and the received second spatial mapping reference signal after receiving the first message, and send the spatial mapping reference signal corresponding to the target TRP to the terminal through a third message, thereby enabling the terminal to send the SRS-Pos signal in the designated direction based on the spatial mapping reference signal corresponding to the target TRP.

It should be noted that, for specific content of the first message, reference may be made to related content of the LMF-side embodiment, and details are not described herein again.

In addition, in this embodiment, when the target base station sends the first message to the LMF, the target base station may receive the first request message sent by the LMF, where the first request message carries indication information requesting the target base station to feed back the first spatial mapping reference signal of each TRP in the preset TRP list; a first message is then sent to the LMF based on the first request message.

It should be noted that, the above specific process may refer to the relevant content of the above LMF-side embodiment, and is not described in detail here.

In addition, in this embodiment, after sending the first message to the LMF, the target base station may also receive a fourth message sent by the LMF, where the fourth message carries a spatial mapping reference signal corresponding to the target TRP; and then measuring the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP, thereby realizing that the TRP of the serving base station and the adjacent base station as the target base station can accurately measure the uplink positioning reference signal sent by the terminal, further being beneficial to more accurate SRS-Pos measurement of the network, and further improving the positioning precision of uplink positioning.

Specifically, on the basis of the above embodiment, the first spatially mapped reference signal includes any one or a combination of the following information:

SSB and SSB index of the service cell and/or the neighboring cell; descending PRS; SRS-R15 of the serving cell; SRS-R16 of the serving cell; the CSI-RS of the service cell and the resource identification corresponding to the CSI-RS.

PCI and SSB indexes of a serving cell and/or a neighboring cell and RSRP corresponding to the SSB indexes; downlink PRS of a serving cell and/or a neighboring cell, TRP identification corresponding to the downlink PRS, resource identification corresponding to the downlink PRS and RSRP corresponding to the downlink PRS; SRS-R15 of the serving cell; SRS-R16 of the serving cell; and the CSI-RS of the serving cell and the resource identifier corresponding to the CSI-RS.

It should be noted that, for the selection process of the second spatial mapping reference signal, reference may be made to relevant contents of the LMF-side method, and details are not described herein again.

In this way, the target base station in this embodiment provides the LMF with the first spatial mapping reference signal of the TRP in the preset TRP list, so that the LMF can select the target TRP from the preset TRP list based on the first spatial mapping reference signal and the received second spatial mapping reference signal after receiving the first message, and send the spatial mapping reference signal corresponding to the target TRP to the terminal through the third message, thereby enabling the terminal to send the SRS-Pos signal in the designated direction based on the spatial mapping reference signal corresponding to the target TRP, and improving the positioning accuracy of the uplink positioning method.

The detailed process of this embodiment is described below through an interaction diagram between the LMF, the target base station and the terminal.

The first embodiment is as follows:

as shown in fig. 4, which is a schematic diagram of interaction between the LMF and the terminal, the interaction between the LMF and the terminal includes the following steps:

step 1, LMF sends a second request message (LPP request message) to the terminal, and the terminal is required to recommend the spatial mapping reference signals of the service cell and the adjacent cell.

And 2, after receiving the second request message, the terminal can perform beam scanning, search all surrounding detected neighbor cell SSB signals, sort according to the signal quality of the surrounding detected neighbor cell SSB signals, and list the indexes of the previously-sorted detected serving cell and neighbor cell SSB and the corresponding RSRP. In addition, the terminal can also measure again by combining with the configured downlink PRS once, obtain RSRPs corresponding to the downlink PRS under a plurality of TRPs, sort according to the signal quality of the terminal, and list the previously-sorted detected downlink PRSs of the serving cell and the neighboring cell and the RSRPs corresponding to the serving cell and the neighboring cell. Of course, the terminal may also report the SRS-R15 and SRS-R16 information of the serving cell to the LMF as reference signals. At this time, the terminal transmits a second spatial mapping reference signal as recommendation information to the LMF through a second message (LPP message). For details of the second space mapping reference signal, reference is made to the above embodiments, and details are not repeated herein.

And 3, after the LMF acquires the information from the terminal, comprehensively selecting and determining the target TRP participating in the positioning measurement and the space mapping reference signal corresponding to each target TRP resource identifier, and sending the space mapping reference signal corresponding to the selected target TRP to the terminal through a third message (LPP message), thereby completing the space mapping configuration of the uplink reference signal SRS-Pos. The spatial mapping reference signal corresponding to the target TRP includes, but is not limited to, the following single information or a combination thereof: each TRP corresponds to the SSB and SSB index of a serving cell or a neighboring cell, the downlink PRS of the serving cell or the neighboring cell, the SRS-R15 or SRS-R16 or CSI-RS and other information of the cell.

Example two:

as shown in fig. 5, which is a schematic interaction diagram between the LMF and the target base station, the interaction between the LMF and the target base station includes the following steps:

step 1, the LMF initiates a first REQUEST message (NRPPa position INFORMATION REQUEST) to the service base station and the adjacent base stations corresponding to all TRPs, and requires the base stations to provide the spatial mapping reference signal recommendation of all TRPs in the TRP list or the configuration INFORMATION of related SSB and uplink SRS-Pos reference signals to the LMF.

Step 2, the serving base station and the neighboring base station send the recommended spatial mapping reference signals of each TRP to the LMF through a first message (NRPPa POSITIONING INFORMATION RESPONSE), wherein the recommended spatial mapping reference signals of the TRP include, but are not limited to, the following single INFORMATION or a combination thereof: SSB and SSB index of TRP under own cell, downlink PRS, SRS-R15, SRS-R16, CSI-RS and the like.

And 3, after the LMF acquires the INFORMATION from the target base station, comprehensively selecting and determining the target TRP participating in the POSITIONING measurement and the spatial mapping reference signal corresponding to each target TRP resource identifier, and sending the spatial mapping reference signal corresponding to the selected target TRP to the target base station through a fourth message (NRPPa POSITIONING INFORMATION RESPONSE), or naturally sending the resource corresponding to the target TRP to the target base station and informing the target base station to measure.

So far, with the first and second embodiments, the configuration process of the spatial mapping reference signal is completed.

As shown in fig. 6, which is a block diagram of a positioning reference signal configuration apparatus applied to an LMF in an embodiment of the present invention, the apparatus includes:

a receiving module 601, configured to receive a first message sent by each target base station, and receive a second message sent by a terminal, where the first message carries a first spatial mapping reference signal corresponding to a TRP in a preset sending reception point TRP list under the target base station, the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of the terminal, and the target base station includes the serving base station and an adjacent cell base station corresponding to the TRP in the preset TRP list;

an obtaining module 602, configured to select a target TRP from a preset TRP list based on the first spatial mapping reference signal and the second spatial mapping reference signal;

a sending module 603, configured to send a third message to the terminal, where the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine an emission direction of an uplink positioning reference signal, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

Optionally, the first spatially mapped reference signal includes any one or a combination of the following information:

a synchronization signal block SSB and an SSB index of a service cell and/or a neighboring cell;

a downlink Positioning Reference Signal (PRS);

a channel sounding reference signal SRS-R15 of an R15 version protocol of a serving cell;

a channel sounding reference signal SRS-R16 of an R16 version protocol of a serving cell;

and the channel state information reference signal (CSI-RS) of the serving cell and the resource identifier corresponding to the CSI-RS.

The apparatus provided in this embodiment can implement all the method steps that can be implemented by the LMF side method embodiment described above, and can achieve the same technical effects, which are not described herein again.

As shown in fig. 7, a block diagram of a positioning reference signal configuration apparatus applied to a terminal in an embodiment of the present invention is shown, where the apparatus includes:

a sending module 701, configured to send a second message to a location management function entity LMF, where the second message carries a second spatial mapping reference signal of a serving cell and/or an adjacent cell of a terminal;

a receiving module 702, configured to receive a third message sent by an LMF, where the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine a transmission direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset TRP sending and receiving point list by an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF by a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

a downlink Positioning Reference Signal (PRS);

The apparatus provided in this embodiment can implement all the method steps that can be implemented by the terminal-side method embodiment described above, and can achieve the same technical effect, which is not described herein again.

As shown in fig. 8, a block diagram of a positioning reference signal configuration apparatus applied to a target base station in an embodiment of the present invention is shown, where the apparatus includes:

a sending module 801, configured to send a first message to a location management function LMF, where the first message carries a first spatial mapping reference signal of a TRP in a preset sending reception point TRP list under a target base station, and the target base station includes a serving base station and a neighboring base station corresponding to the TRP in the preset TRP list.

a synchronous signal block SSB and an SSB index of a service cell and/or a neighboring cell;

a downlink Positioning Reference Signal (PRS);

The apparatus provided in this embodiment can implement all the method steps that can be implemented by the target base station side method embodiment described above, and can achieve the same technical effect, which is not described herein again.

Fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 9, the terminal 900 may include: at least one processor 901, memory 902, at least one network interface 904, and other user interfaces 903. The various components in terminal 900 are coupled together by a bus system 905. It is understood that the bus system 905 is used to enable communications among the components. The bus system 905 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 9 as bus system 905.

The user interface 903 may include, among other things, a display, a keyboard, or a pointing device, such as a mouse, trackball (trackball), touch pad, or touch screen.

It is to be understood that the memory 902 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 902 of the systems and methods described in connection with the various embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 902 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof, for example: an operating system 9021 and application programs 9022.

The operating system 9021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application 9022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.

In this embodiment of the present invention, by calling the computer program or instruction stored in the memory 902, specifically, the computer program or instruction stored in the application 9022, the processor 901 is configured to: sending a second message to a Location Management Function (LMF), wherein the second message carries a second spatial mapping reference signal of a serving cell and/or a neighboring cell of the terminal; receiving a third message sent by an LMF, wherein the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmitting direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset TRP sending and receiving point list by an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF by a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

The method disclosed in the above embodiments of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and in combination with the hardware thereof, performs the steps of the method.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in connection with the embodiments of the invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, as another embodiment, the processor 901 is further configured to: receiving a second request message sent by the LMF, wherein the second request message carries indication information for requesting a terminal to feed back a second spatial mapping reference signal of a serving cell and/or a neighboring cell; sending the second message to the LMF based on the second request message.

Optionally, as another embodiment, the processor 901 is further configured to: and sending an uplink positioning reference signal based on the space mapping reference signal corresponding to the target TRP.

Optionally, as another embodiment, the first spatially mapped reference signal includes any one or a combination of the following information:

a synchronization signal block SSB and an SSB index of a service cell and/or a neighboring cell; a downlink Positioning Reference Signal (PRS); a channel sounding reference signal SRS-R15 of an R15 version protocol of a serving cell; a channel sounding reference signal SRS-R16 of an R16 version protocol of a serving cell; and the channel state information reference signal (CSI-RS) of the serving cell and the resource identifier corresponding to the CSI-RS.

Optionally, as another embodiment, the second spatially mapped reference signal includes any one or a combination of the following information:

the physical cell identification PCI, the SSB index and the reference signal received power RSRP corresponding to the SSB index of the serving cell and/or the neighboring cell; a downlink PRS of the serving cell and/or the neighboring cell, a TRP identifier corresponding to the downlink PRS, a resource identifier corresponding to the downlink PRS, and a RSRP corresponding to the downlink PRS; SRS-R15 of the serving cell; SRS-R16 of the serving cell; and the CSI-RS of the serving cell and the resource identifier corresponding to the CSI-RS.

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the foregoing embodiments, and is not described herein again to avoid repetition.

Fig. 10 is a schematic structural diagram of an LMF according to an embodiment of the present invention, and as shown in fig. 10, the LMF1000 may include at least one processor 1001, a memory 1002, at least one other user interface 1003, and a transceiver 1004. The various components in LMF1000 are coupled together by a bus system 1005. It is understood that the bus system 1005 is used to enable communications among the components of the connection. The bus system 1005 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 1005 in fig. 10, which may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1001, and various circuits, represented by memory 1002, being linked together. The bus system may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, embodiments of the present invention will not be described any further. The bus interface provides an interface. The transceiver 1004 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1003 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

It is to be understood that the memory 1002 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1002 of the described systems and methods for embodiments of the present invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The processor 1001 is responsible for managing the bus system and general processing, and the memory 1002 may store computer programs or instructions used by the processor 1001 in performing operations, and in particular, the processor 1001 may be configured to: receiving a first message sent by each target base station and a second message sent by a terminal, wherein the first message carries a first spatial mapping reference signal corresponding to a TRP (channel quality indicator) in a preset sending receiving point TRP list under the target base station, the second message carries a second spatial mapping reference signal of a service cell and/or an adjacent cell of the terminal, and the target base station comprises the service base station and the adjacent cell base station corresponding to the TRP in the preset TRP list; selecting a target TRP from a preset TRP list based on the first space mapping reference signal and the second space mapping reference signal; and sending a third message to the terminal, wherein the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmission direction of an uplink positioning reference signal, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

The method disclosed by the embodiment of the invention can be applied to the processor 1001 or can be implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The Processor 1001 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and performs the steps of the method in combination with the hardware.

Optionally, as another embodiment, the processor 1001 is further configured to: sending a first request message to each target base station, wherein the first request message carries indication information for requesting the target base station to feed back a first spatial mapping reference signal of each TRP in a preset TRP list; receiving the first message sent by each target base station based on the first request message.

Optionally, as another embodiment, the processor 1001 is further configured to: sending a second request message to the terminal, wherein the second request message carries indication information for requesting the terminal to feed back a second spatial mapping reference signal of the serving cell and/or the neighboring cell; receiving the second message sent by the terminal based on the second request message.

Optionally, as another embodiment, the processor 1001 is further configured to: and sending a fourth message to the target base station, wherein the fourth message carries a spatial mapping reference signal corresponding to the target TRP, so that the target base station measures an uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

The LMF provided in the embodiment of the present invention can implement each process implemented by the LMF in the foregoing embodiment, and is not described herein again to avoid repetition.

Fig. 11 is a schematic structural diagram of a target base station according to an embodiment of the present invention, and as shown in fig. 11, the target base station 1100 may include at least one processor 1101, a memory 1102, at least one other user interface 1103, and a transceiver 1104. The various components in the target base station 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 serves to enable connected communication between these components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various busses are labeled in fig. 11 as the bus system 1105 which may include any number of interconnected buses and bridges, with one or more processors represented by the processor 1101 and various circuits of the memory represented by the memory 1102 being linked together. The bus system may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, embodiments of the present invention will not be described any further. The bus interface provides an interface. The transceiver 1104 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1103 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the subject systems and methods described in connection with the various embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The processor 1101 is responsible for managing the bus system and general processing, and the memory 1102 may store computer programs or instructions used by the processor 1101 in performing operations, in particular, the processor 1101 may be configured to: and sending a first message to a Location Management Function (LMF), wherein the first message carries a first spatial mapping reference signal of a TRP (channel map) in a preset sending and receiving point (TRP) list under a target base station, and the target base station comprises the serving base station and an adjacent base station corresponding to the TRP in the preset TRP list.

The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with the hardware thereof.

Optionally, as another embodiment, the processor 1101 is further configured to: receiving a first request message sent by the LMF, wherein the first request message carries indication information for requesting a target base station to feed back a first spatial mapping reference signal of each TRP in a preset TRP list; sending the first message to the LMF based on the first request message.

Optionally, as another embodiment, the processor 1101 is further configured to: receiving a fourth message sent by the LMF, wherein the fourth message carries a spatial mapping reference signal corresponding to the target TRP; and measuring the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

The target base station provided in the embodiment of the present invention can implement each process implemented by the target base station in the foregoing embodiments, and is not described here again to avoid repetition.

The above description mainly introduces the solutions provided by the embodiments of the present invention from the perspective of electronic devices. It is understood that the electronic device provided by the embodiment of the present invention includes a hardware structure and/or a software module for performing the above functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software for performing the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein.

Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present invention, the electronic device and the like may be divided into functional modules according to the above method examples, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute all or part of the steps of the method according to the embodiments of the present invention. The computer storage medium is a non-transitory (English) medium, comprising: flash memory, removable hard drive, read only memory, random access memory, magnetic or optical disk, and the like.

On the other hand, embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method provided in the foregoing embodiments is implemented and can achieve the same technical effect, which is not described herein again.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A positioning reference signal configuration method is applied to a positioning management function entity (LMF), and is characterized by comprising the following steps:

receiving a first message sent by each target base station and a second message sent by a terminal, wherein the first message carries a first spatial mapping reference signal corresponding to a TRP (channel quality indicator) in a preset sending receiving point TRP list under the target base station, the second message carries a second spatial mapping reference signal of a service cell and/or an adjacent cell of the terminal, and the target base station comprises the service base station and the adjacent cell base station corresponding to the TRP in the preset TRP list;

2. The method of claim 1, wherein the receiving the first message sent by each target base station comprises:

sending a first request message to each target base station, wherein the first request message carries indication information for requesting the target base station to feed back a first spatial mapping reference signal of each TRP in a preset TRP list;

receiving the first message sent by each target base station based on the first request message.

3. The method of claim 1, wherein the receiving the second message sent by the terminal comprises:

sending a second request message to the terminal, wherein the second request message carries indication information for requesting the terminal to feed back a second spatial mapping reference signal of the serving cell and/or the neighboring cell;

receiving the second message sent by the terminal based on the second request message.

4. The method as claimed in claim 1, wherein after the selecting the target TRP from the TRP list based on the first spatially mapped reference signal and the second spatially mapped reference signal, the method further comprises:

and sending a fourth message to the target base station, wherein the fourth message carries a spatial mapping reference signal corresponding to the target TRP, so that the target base station measures an uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

5. The method according to any of claims 1 to 4, wherein the first spatially mapped reference signal comprises any one or a combination of the following information:

a downlink Positioning Reference Signal (PRS);

6. The method according to any of claims 1 to 4, wherein the second spatially mapped reference signal comprises any one or a combination of the following information:

the physical cell identification PCI, the SSB index and the reference signal received power RSRP corresponding to the SSB index of the serving cell and/or the neighboring cell;

a downlink PRS of the serving cell and/or the neighboring cell, a TRP identifier corresponding to the downlink PRS, a resource identifier corresponding to the downlink PRS, and a RSRP corresponding to the downlink PRS;

SRS-R15 of the serving cell;

SRS-R16 of the serving cell;

and the CSI-RS of the serving cell and the resource identifier corresponding to the CSI-RS.

7. A method for configuring a positioning reference signal is applied to a terminal, and is characterized by comprising the following steps:

8. The method according to claim 7, wherein the sending the second message to the location management function entity LMF includes:

receiving a second request message sent by the LMF, wherein the second request message carries indication information for requesting a terminal to feed back a second spatial mapping reference signal of a serving cell and/or a neighboring cell;

sending the second message to the LMF based on the second request message.

9. The method as claimed in claim 7, further comprising, after receiving the third message sent by the LMF:

and sending an uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

10. The method according to any of claims 7 to 9, wherein the first spatially mapped reference signal comprises any one or a combination of the following information:

a downlink Positioning Reference Signal (PRS);

11. The method according to any of claims 7 to 9, wherein the second spatially mapped reference signal comprises any one or a combination of the following information:

SRS-R15 of the serving cell;

SRS-R16 of the serving cell;

12. A positioning reference signal configuration method is applied to a target base station, and is characterized by comprising the following steps:

13. The method according to claim 12, wherein the sending the first message to a location management function entity, LMF, comprises:

receiving a first request message sent by the LMF, wherein the first request message carries indication information for requesting a target base station to feed back a first spatial mapping reference signal of each TRP in a preset TRP list;

sending the first message to the LMF based on the first request message.

14. The method according to claim 12, wherein after sending the first message to the LMF, the method further comprises:

receiving a fourth message sent by the LMF, wherein the fourth message carries a spatial mapping reference signal corresponding to a target TRP;

and measuring the uplink positioning reference signal based on the space mapping reference signal corresponding to the target TRP.

15. The method according to any of claims 12 to 14, wherein the first spatially mapped reference signal comprises any one or a combination of the following information:

a downlink Positioning Reference Signal (PRS);

16. The method according to any of claims 12 to 14, wherein the second spatially mapped reference signal comprises any one or a combination of the following information:

a physical cell identifier PCI, an SSB index and reference signal received power RSRP corresponding to the SSB index of a serving cell and/or a neighboring cell;

SRS-R15 of the serving cell;

SRS-R16 of the serving cell;

17. A positioning reference signal configuration device is applied to a positioning management function (LMF), and is characterized by comprising the following components:

a sending module, configured to send a third message to the terminal, where the third message carries a spatial mapping reference signal corresponding to the target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine an emission direction of an uplink positioning reference signal, so that the terminal sends the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

18. A positioning reference signal configuration device applied to a terminal is characterized by comprising:

a receiving module, configured to receive a third message sent by an LMF, where the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used to determine a transmission direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset TRP sending and receiving point list by an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF by a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

19. A positioning reference signal configuration device applied to a target base station, comprising:

the sending module is used for sending a first message to a location management function entity LMF, wherein the first message carries a first space mapping reference signal of a TRP in a preset sending receiving point TRP list under a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

20. An LMF comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of:

21. The LMF of claim 20 wherein receiving the first message from each target base station comprises:

22. The LMF of claim 20 wherein the second message sent by the receiving terminal comprises:

23. The LMF of claim 20, wherein after the selecting the target TRP from the pre-set TRP list based on the first spatially mapped reference signal and the second spatially mapped reference signal, further comprising:

24. An LMF according to any one of claims 20 to 23 wherein the first spatially mapped reference signal comprises any one or a combination of the following information:

a downlink Positioning Reference Signal (PRS);

25. An LMF according to any of claims 20 to 23 wherein the second spatially mapped reference signal comprises any one or a combination of the following information:

SRS-R15 of the serving cell;

SRS-R16 of the serving cell;

26. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of:

receiving a third message sent by an LMF, wherein the third message carries a spatial mapping reference signal corresponding to a target TRP, and the spatial mapping reference signal corresponding to the target TRP is used for determining the transmitting direction of an uplink positioning reference signal; the target TRP is obtained by selecting from a preset sending receiving point TRP list through an LMF based on a first space mapping reference signal and a second space mapping reference signal, the first space mapping reference signal is sent to the LMF through a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

27. The terminal of claim 26, wherein the sending the second message to a location management function entity, LMF, comprises:

sending the second message to the LMF based on the second request message.

28. The terminal of claim 26, wherein after receiving the third message sent by the LMF, the terminal further comprises:

and sending an uplink positioning reference signal based on the space mapping reference signal corresponding to the target TRP.

29. A target base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program performs the steps of:

and sending a first message to a Location Management Function (LMF), wherein the first message carries a first spatial mapping reference signal of a TRP (channel quality indicator) in a preset sending receiving point (TRP) list under a target base station, and the target base station comprises a service base station and an adjacent base station corresponding to the TRP in the preset TRP list.

30. The target base station of claim 29, wherein the sending the first message to a location management function entity, LMF, comprises:

sending the first message to the LMF based on the first request message.

31. The target base station of claim 29, wherein after sending the first message to the LMF, further comprising:

and measuring the uplink positioning reference signal based on the spatial mapping reference signal corresponding to the target TRP.

32. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the positioning reference signal configuration method according to any one of claims 1 to 6, or carries out the steps of the positioning reference signal configuration method according to any one of claims 7 to 11, or carries out the steps of the positioning reference signal configuration method according to any one of claims 12 to 16.