CN111586830A

CN111586830A - Positioning method and communication device

Info

Publication number: CN111586830A
Application number: CN201910117154.1A
Authority: CN
Inventors: 陈雷; 黄甦; 凯文·扎里非
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-08-25
Anticipated expiration: 2039-02-15
Also published as: CN111586830B; WO2020164405A1

Abstract

The embodiment of the application provides a positioning method, which is applied to a Location Measurement Unit (LMU) and comprises the steps of sending a downlink reference signal to User Equipment (UE), wherein the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning the UE; receiving the uplink reference signal from the UE. The LMU directly sends the downlink reference signal, so that the sending beam or the sending power of the uplink reference signal sent to the LMU by the UE can be accurately determined.

Description

Positioning method and communication device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a positioning method and a communication device.

Background

The positioning technology is mainly realized by estimating the relative distance or relative angle between a base station with a known position and a user to be positioned. In the uplink positioning technology, an uplink reference signal is sent by User Equipment (UE), a base station receives and measures arrival time, strength, arrival angle, and the like of an arrival signal, and further calculates information such as a relative distance and a relative angle between the UE and the base station, and measurement results between a plurality of base stations can be combined to determine the location of the UE.

Due to the limitation of the transmission power of the UE, the coverage of the uplink reference signal sent by the UE is limited, and except for the serving base station to which the UE belongs, only a small number of neighboring base stations can usually receive the uplink reference signal sent by the UE, but the uplink positioning technology usually needs a plurality of base stations to participate in order to accurately determine the Location of the UE. The LMUs can be deployed away from the base stations, and the problem of insufficient base stations is solved.

An uplink reference signal transmitted by a UE in the prior art may be regarded as being transmitted omni-directionally, and after a New Radio (NR) technology is introduced into a 3GPP standard, how to determine a beam and a transmission power of the uplink reference signal becomes one of the problems that needs to be solved urgently.

Disclosure of Invention

The embodiment of the application provides a positioning method and a communication device, which can solve the problem of how to determine the beam and the transmission power of an uplink reference signal.

In a first aspect, a positioning method is provided, which is applied to a location measurement unit LMU, and includes: sending a downlink reference signal to User Equipment (UE), wherein the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning the UE; receiving the uplink reference signal from the UE.

The LMU can directly send the downlink reference signal, so that the sending beam or the sending power of the uplink reference signal sent to the LMU by the UE can be accurately determined. If the LMU itself does not have the resource of the downlink reference signal, the resource may be obtained by other entities, for example, the resource may be allocated by an entity such as a location server or a base station, that is, the resource of the downlink reference signal may be allocated by other entities. The LMU may also directly allocate a dedicated resource for transmitting the downlink reference signal when it leaves the factory.

In one possible design, before the sending the downlink reference signal to the user equipment UE, the method further includes: acquiring sending configuration information of the downlink reference signal; the sending the downlink reference signal to the user equipment UE includes: and sending the downlink reference signal to User Equipment (UE) according to the sending configuration information of the downlink reference signal.

In one possible design, the obtaining the transmission configuration information of the downlink reference signal includes: and receiving the sending configuration information of the downlink reference signal from the positioning server.

In one possible design, the transmission configuration information of the downlink reference signal includes at least one of the following information: the downlink reference signal may include a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a transmission start time of the downlink reference signal, a system frame number of the downlink reference signal), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, and a potential coverage of the downlink reference signal.

In one possible design, before the receiving the uplink reference signal from the UE, the method further includes: acquiring receiving configuration information of the uplink reference signal; the receiving the uplink reference signal from the UE comprises: and receiving the uplink reference signal from the UE according to the receiving configuration information of the uplink reference signal.

In one possible design, the obtaining the reception configuration information of the uplink reference signal includes: and receiving the receiving configuration information of the uplink reference signal from the positioning server.

In one possible design, the reception configuration information of the uplink reference signal includes at least one of the following information: bandwidth of the uplink reference signal, transmission start time of the uplink reference signal (e.g., the time when the uplink reference signal starts to be transmitted, a system frame number when the uplink reference signal starts to be transmitted), transmission end time of the uplink reference signal, transmission period of the uplink reference signal, the number of transmission periods of the uplink reference signal, transmission duration of the uplink reference signal, time domain resource of the uplink reference signal, frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, recommended power information of the uplink reference signal, measurement quantity of LMU measurement uplink reference signal, measurement period of LMU measurement uplink reference signal, search window of LMU measurement uplink reference signal, and the like, Reporting period of the measurement information of the uplink reference signal, reporting period offset of the measurement information of the uplink reference signal, reporting mode of the measurement information of the uplink reference signal, reference time of uplink relative arrival time RTOA of the uplink reference signal, and uncertainty of the arrival time of the uplink reference signal.

In this embodiment of the present application, the LMU receives the uplink reference signal according to the reception configuration information of the uplink reference signal, where the reception configuration information of the uplink reference signal may include a correspondence between the uplink reference signal and the downlink reference signal, that is, a reception beam corresponding to a transmission beam of the downlink reference signal may be used to receive the corresponding uplink reference signal.

In one possible design, after receiving the uplink reference signal from the UE, the method further includes: acquiring measurement information of an uplink reference signal according to the uplink reference signal, wherein the measurement information of the uplink reference signal comprises at least one of the following information: the method comprises the steps that a measurement result of an uplink reference signal measured by an LMU (local mean square), an index of the uplink reference signal measured by the LMU, an identifier of UE (user equipment) corresponding to the uplink reference signal measured by the LMU, a measurement frequency point of the uplink reference signal measured by the LMU, and a time difference between the arrival time of the uplink reference signal and the sending time of the downlink reference signal are obtained; and sending the measurement information of the uplink reference signal to a positioning server.

In a second aspect, a positioning method is provided, which is applied to a user equipment UE, and includes: receiving a downlink reference signal from a location measurement unit LMU; acquiring at least one of a transmission beam and transmission power of an uplink reference signal according to the downlink reference signal, wherein the uplink reference signal is used for positioning the UE; and sending the uplink reference signal to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal.

In the embodiment of the present application, the UE receives the downlink reference signal, and may associate the downlink reference signal with the uplink reference signal, that is, a transmission beam of the uplink reference signal is a transmission beam corresponding to a reception beam of the downlink reference signal, and a transmission power of the uplink reference signal is a transmission power corresponding to path loss information of the downlink reference signal.

In one possible design, before receiving the downlink reference signal from the location measurement unit LMU, the method further includes: acquiring receiving configuration information of the downlink reference signal; the receiving the downlink reference signal from the location measurement unit LMU includes: and receiving the downlink reference signal from the location measurement unit LMU according to the receiving configuration information of the downlink reference signal.

In one possible design, the obtaining the reception configuration information of the downlink reference signal includes: and receiving the receiving configuration information of the downlink reference signal from the positioning server.

In one possible design, the reception configuration information of the downlink reference signal includes at least one of the following information: a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a transmission start time of the downlink reference signal, a system frame number of the downlink reference signal), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, a potential coverage of the downlink reference signal, a measurement quantity of the downlink reference signal measured by the UE, a measurement period of the downlink reference signal measured by the UE, a reporting period of the measurement information of the downlink reference signal, a reporting period offset of the measurement information of the downlink reference signal, a transmission delay of the downlink reference signal, and reporting the measurement information of the downlink reference signal.

In one possible design, the obtaining at least one of a transmission beam and a transmission power of the uplink reference signal according to the downlink reference signal includes: acquiring measurement information of the downlink reference signal; and acquiring at least one of the transmission beam and the transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, or transmitting the measurement information of the downlink reference signal to a positioning server, wherein the measurement information of the downlink reference signal is used for acquiring at least one of the transmission beam and the transmission power of the uplink reference signal.

In one possible design, the measurement information of the downlink reference signal includes at least one of the following information: the measurement result of the downlink reference signal measured by the UE, the index of the downlink reference signal measured by the UE, the identity of the UE and the measurement frequency point of the downlink reference signal measured by the UE.

In one possible design, before the transmitting the uplink reference signal to the LMU according to at least one of the transmission beam and the transmission power of the uplink reference signal, the method further includes: acquiring sending configuration information of the uplink reference signal; the transmitting the uplink reference signal to the LMU according to at least one of the transmission beam and the transmission power of the uplink reference signal includes: and sending the uplink reference signal to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal and the sending configuration information of the uplink reference signal.

In one possible design, the obtaining the transmission configuration information of the uplink reference signal includes: and receiving the sending configuration information of the uplink reference signal from the positioning server.

In one possible design, the transmission configuration information of the uplink reference signal includes at least one of the following information: bandwidth of the uplink reference signal, a transmission start time of the uplink reference signal (for example, a transmission start time of the uplink reference signal, a system frame number of the uplink reference signal), a transmission end time of the uplink reference signal, a transmission period of the uplink reference signal, a number of transmission periods of the uplink reference signal, a transmission duration of the uplink reference signal, a time domain resource of the uplink reference signal, a frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, a potential coverage of the uplink reference signal, and proposed power information of the uplink reference signal.

In a third aspect, a positioning method applied to a positioning server is provided, including: sending configuration information of a downlink reference signal to a location measurement unit LMU, wherein the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning User Equipment (UE); sending the receiving configuration information of the downlink reference signal to the UE; sending the sending configuration information of the uplink reference signal to the UE; sending the receiving and sending configuration information of the uplink reference signal to the LMU; and receiving the measurement information of the uplink reference signal from the LMU.

In a possible design, before sending the sending configuration information of the downlink reference signal to the LMU, the method further includes: sending resource request information of a downlink reference signal to a target base station; receiving resource response information of a downlink reference signal from a target base station; and acquiring the sending configuration information of the downlink reference signal and the receiving configuration information of the downlink reference signal according to the resource response information of the downlink reference signal.

In one possible design, after sending the reception configuration information of the downlink reference signal to the UE, the method further includes: receiving measurement information of a downlink reference signal from the UE; acquiring at least one of a transmission beam and transmission power of the uplink reference signal according to the measurement information of the downlink reference signal; and acquiring the transmission configuration information of the uplink reference signal according to at least one of the transmission beam and the transmission power of the uplink reference signal.

In one possible design, before the sending configuration information of the uplink reference signal to the UE, the method further includes: sending resource request information of an uplink reference signal to a serving base station; receiving resource response information of an uplink reference signal from a serving base station; and acquiring the sending configuration information of the uplink reference signal and the receiving sending configuration information of the uplink reference signal according to the resource response information of the uplink reference signal.

In a fourth aspect, a positioning method applied to a base station is provided, including: receiving resource request information of a downlink reference signal from a positioning server; and sending resource response information of a downlink reference signal to the positioning server, wherein the resource response information of the downlink reference signal is used for determining sending configuration information of the downlink reference signal, the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning User Equipment (UE).

In one possible design, further comprising: receiving resource request information of an uplink reference signal from the positioning server; and sending resource response information of the uplink reference signal to the positioning server.

In a fifth aspect, a communication device is provided, which includes means for performing the steps of the method in any one of the possible implementations of the first to fourth aspects and the first to fourth aspects.

In one possible design, the communication device is a communication chip that may include an input circuit or interface for sending information or data and an output circuit or interface for receiving information or data.

In one possible design, the communication device is a communication device (e.g., LMU, UE, location server, base station) that may include a transmitter for transmitting information or data and a receiver for receiving information or data.

In a sixth aspect, a communication device is provided that includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program from the memory, so that the communication device performs the method in any possible implementation manner of the aspect to the fourth aspect and the first aspect to the fourth aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

In a seventh aspect, a processor is provided that includes an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method of any one of the possible implementations of the first to fourth aspects and the first to fourth aspects.

In one possible design, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In an eighth aspect, a processing device is provided that includes a memory and a processor. The processor is configured to read the instructions stored in the memory, and may receive a signal through the receiver and transmit a signal through the transmitter to perform the method of any one of the possible implementations of the first to fourth aspects and the first to fourth aspects.

In a specific implementation process, the memory may be a non-transient memory, such as a Read Only Memory (ROM), which may be integrated on the same chip as the processor, or may be separately disposed on different chips.

In a ninth aspect, there is provided a chip comprising a processor and a memory, the memory being configured to store a computer program, the processor being configured to invoke and run the computer program from the memory, the computer program being configured to implement the method of any one of the possible implementations of the first to fourth aspects and of the first to fourth aspects.

In a tenth aspect, there is provided a computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any of the possible implementations of the first to fourth aspects and of the first to fourth aspects described above.

In an eleventh aspect, a computer-readable medium is provided, which stores a computer program (which may also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method of any one of the possible implementations of the first to fourth aspects and the first to fourth aspects.

Drawings

Fig. 1 is a diagram of a positioning network architecture according to an embodiment of the present application;

fig. 2 is a diagram of another positioning network architecture provided in an embodiment of the present application;

fig. 3 is a flowchart illustrating a method for acquiring downlink reference signal resources according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a method for configuring, transmitting, receiving and measuring a downlink reference signal according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a method for acquiring an uplink reference signal resource according to an embodiment of the present application;

fig. 6 is a flowchart illustrating a method for configuring, transmitting, receiving and measuring an uplink reference signal according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

First, some terms referred to in the embodiments of the present application are explained:

1. location measurement unit (Location measurement unit, LMU)

The LMUs can be integrally deployed in the base station or separately deployed from the base station. The LMU is a name given in the existing 3GPP standard, and as the technology develops, other names may appear in the entity, such as NR-LMU, or a location assisting unit, an assisted location unit, a positioning assisting unit, an assisted positioning unit, and the like.

2. Positioning server

The method is used for collecting the measurement information or the position information reported by the base station, the LMU or the UE, and can also perform position calculation according to the measurement information or the position information to determine the position of the UE.

3. Service base station

The base station serving the UE may provide uplink reference signal resources for the UE. In the embodiments of the present application, the base station may be replaced by a cell within the coverage of the base station's wireless network. For example, in the embodiments of the present application, reference is made to "serving base station" multiple times, and "serving base station" may be replaced by a cell in the coverage area of the wireless network serving the base station, such as "serving base station" being replaced by "serving cell". As another example, in this embodiment, reference is made to "a neighboring base station" multiple times, and the "neighboring base station" may be replaced by a cell in a coverage area of a wireless network of the neighboring base station, for example, the "neighboring base station" is replaced by a "neighboring cell" or a "non-serving cell".

4. Target base station

The base station providing the downlink reference signal resources for the LMUs may be a serving base station of the UE, or may be another base station other than the serving base station of the UE.

5. Wave beam

A beam is a communication resource. The beam may be a wide beam, a narrow beam, or other types of beams. The technique of forming the beam may be a beamforming technique or other technique. The beamforming technique may be a digital beamforming technique, an analog beamforming technique, a hybrid digital/analog beamforming technique, or the like. The different beams may be different communication resources. The same information or different information may be transmitted through different beams. Alternatively, a plurality of beams having the same or similar communication characteristics may be considered as one beam. One beam may include one or more antenna ports for transmitting data channels, control channels, sounding signals, and the like, for example, a transmitting beam may refer to the distribution of signal strength formed in different spatial directions after signals are transmitted through the antenna, and a receiving beam may refer to the distribution of signal strength in different spatial directions of wireless signals received from the antenna. It is to be understood that the one or more antenna ports forming one beam may also be seen as one set of antenna ports. The beam may also be embodied in a spatial filter (spatial filter) within the protocol.

6. Reference Signal (Reference Signal, RS)

The reference signal is a pilot signal, which is a known signal provided by the transmitting end to the receiving end for channel estimation or channel sounding.

7. Uplink reference signal

The uplink reference signal related in the embodiment of the present application is transmitted by the UE, and is used for positioning the UE. For example, the Sounding Reference Signal (SRS) may be used, or the uplink positioning signal may be used.

8. Downlink reference signal

The downlink reference signal related in the embodiment of the present application is sent through the LMU, and is used to determine at least one of a transmission beam and a transmission power of the uplink reference signal sent by the UE. For example, the CSI-RS may be a channel state information-reference signal (CSI-RS).

As shown in fig. 1, a positioning network architecture provided in the present embodiment is a Long Term Evolution (LTE) network architecture (which may also be referred to as a 4G network architecture). The positioning network architecture comprises: the Mobile node comprises UE, Evolved NodeB (eNodeB), a Mobility Management Entity (MME), an Evolved Serving Mobile Location Center (E-SMLC), and an LMU, wherein an interface between the E-SMLC and the LMU is a signaling link management (SLm) interface.

Wherein the E-SMLC can be used as a positioning server. In the positioning network architecture, there are two positioning protocols, LTE Positioning Protocol (LPP) and LTE positioning protocol a (LPPa), where LPP is a peer-to-peer positioning protocol between a UE and a positioning server, and LPPa is a peer-to-peer positioning protocol between a base station and a positioning server.

Fig. 2 shows another positioning network architecture provided in the present application, which is a 5G network architecture. The positioning network architecture comprises: UE, gNodeB, access and mobility Management Function (AMF), Location Management Function (LMF), NR-LMU, wherein the interface between the LMF and the NR-LMU is NR-SLm interface.

Wherein, the LMF can be used as a positioning server. In the positioning network architecture, there are two positioning protocols, NR positioning protocol (NRPP) and NR positioning protocol a (NRPPa), where NRPP is a peer-to-peer positioning protocol between a UE and a positioning server, and NRPPa is a peer-to-peer positioning protocol between a base station and a positioning server.

In the embodiment of the application, an LMU sends a downlink reference signal to a UE, the UE sends an uplink reference signal to the LMU, the uplink reference signal is used for positioning the position of the UE, and the downlink reference signal is used for determining at least one of a sending beam and sending power of the uplink reference signal. The resources of the downlink reference signals can be allocated by the target base station, can be allocated by the positioning server, can be allocated well before the LMUs leave the factory, and can also be allocated in other modes; the resource of the uplink reference signal may be allocated by a serving base station of the UE, may be allocated by a neighboring base station of the UE, or may be allocated in other manners, and it should be noted that an allocation main body of the downlink reference signal resource and a transmission main body of the downlink reference signal may be different in this embodiment of the present application.

In the following embodiments, the location server is taken as an LMF for illustration, and the following embodiments are divided into four stages:

and stage 1, acquiring downlink reference signal resources.

As shown in fig. 3, a schematic flow chart of a method for acquiring downlink reference signal resources provided in the embodiment of the present application includes:

s301, the LMF determines the LMU needing to participate in the UE positioning and the target base station corresponding to the LMU.

The LMF can select all or part of the managed LMUs to participate in positioning of the UE, a target base station corresponding to the LMU can be configured in advance or can be configured according to a base station signal measurement result fed back by the LMU, for example, the LMF can request the LMU to measure the signal strength of surrounding base stations (such as a Synchronization Signal Block (SSB) of the surrounding base stations), a specific measurement object can be configured by the LMF, the LMU can also be configured by itself to perform blind detection, and the LMU feeds back the base station signal measurement result to the LMF for assisting the LMF to select the target base station.

S302, the LMF sends the resource request information of the downlink reference signal to the target base station.

The LMF sends resource request information of a downlink reference signal to the target base station through signaling (e.g., NRPPa signaling), where the resource request information may include: identification information (for example, UE ID) of the UE to be positioned, spatial information (for example, information of a serving base station where the UE is located, information of a current serving beam direction and ID of the UE, measurement quality (for example, measurement result of a base station CSI-RS or SSB) of the serving base station and a neighboring base station that are reported by the UE historically), and related configuration information (resource sequence, resource bandwidth, resource quantity, time domain and frequency domain density, transmission start time or subframe number, end time or end subframe number, duration or duration cycle number, requested downlink reference signal quantity and corresponding reference signal type (for example, CSI-RS, SSB, or other downlink reference signals), potential transmission location, and the like) of downlink reference signals that are requested by the target base station. The LMF may also inform the target base station of LMU related information participating in positioning, including the number of LMUs that need to participate in positioning, the number of beams of each LMU, the spatial orientation of each beam, the spatial location of the LMU, the maximum bandwidth supported by the LMU, and the corresponding downlink reference signal resource requirements (such as the number of reference signals, the period, the bandwidth, the sequence proposal, etc.). For example, the LMF may request a plurality of downlink reference signal groups of the target base station, where each group is sent by one LMU, and the LMUs respectively use different beams to send different reference signals of the group for implementing beam scanning and beam training.

S303, the target base station determines the resources of the downlink reference signals which can be reserved.

S304, the target base station sends the resource response information of the downlink reference signal to the LMF.

The target base station feeds back the resource response information of the downlink reference signal to the LMF, and the resource response information of the downlink reference signal may include the resource information of the downlink reference signal allocated by the target base station: including resource sequence, resource bandwidth, number of resources, time and frequency domain density, starting transmission time (proposed relative time e.g. sfn index or absolute time point), duration or number of duration periods, type of number of reference signals, silent period and silent pattern configuration, proposed coverage area, etc.

And 2, configuring, sending, receiving and measuring the downlink reference signals.

As shown in fig. 4, a schematic flow chart of a method for configuring, transmitting, receiving and measuring a downlink reference signal provided in an embodiment of the present application includes:

s401, the LMF sends sending configuration information of the downlink reference signal to the LMU.

The LMF may directly send the sending configuration information of the downlink reference signal to the LMU, may send the sending configuration information of the downlink reference signal to the LMU through the target base station, may also send the sending configuration information of the downlink reference signal to the LMU through other manners, and if the sending configuration information of the downlink reference signal is sent to the LMU through the target base station, the sending configuration information of the downlink reference signal may be triggered to be sent to the LMU by the target base station through step S301.

The transmission configuration information of the downlink reference signal may include at least one of the following information: the bandwidth of the downlink reference signal, the transmission start time of the downlink reference signal (e.g., the time when the downlink reference signal starts to be transmitted, the system frame number when the downlink reference signal starts to be transmitted), the transmission end time of the downlink reference signal (e.g., the time when the downlink reference signal finishes to be transmitted, the system frame number when the downlink reference signal finishes to be transmitted), the transmission period of the downlink reference signal, the number of transmission periods of the downlink reference signal, the transmission duration of the downlink reference signal, the time domain resource of the downlink reference signal, the frequency domain resource of the downlink reference signal, the sequence information of the downlink reference signal, the beam information of the downlink reference signal, and the potential coverage of the downlink reference signal. Specifically, the downlink reference signal may be associated with reference signals of surrounding base stations in the transmission configuration information of the downlink reference signal, and the LMU may be instructed to transmit the associated downlink reference signal using a transmission beam corresponding to a reception beam corresponding to the reference signal of the surrounding base station.

The LMU may directly use the sending configuration information of the downlink reference signal sent by the LMF, or may process the sending configuration information of the downlink reference signal sent by the LMF, and select all or part of resources in the sending configuration information of the downlink reference signal sent by the LMF to send the downlink reference signal. For example, the LMF sends, to the LMU, transmission configuration information of the downlink reference signal through signaling (e.g., SLm interface signaling), where the transmission configuration information includes related configurations of available downlink reference signal resources, and may include, for example, transmission beam suggestion information corresponding to the downlink reference signal. The LMU determines the downlink reference signal resource to be used, for example, the downlink reference signal resource to be used is determined according to the number of beams of the LMU, the supported bandwidth range, the currently served UE, and the like. And the LMU sends response information of sending configuration information of the feedback downlink reference signal to the positioning center, wherein the response information comprises configuration information or corresponding index information corresponding to all or part of downlink reference signal resources selected by the LMU.

The sending start time of the downlink reference signal can be specified by the sending start time of the downlink reference signal or the sending start system frame number of the downlink reference signal, the sending start time of the downlink reference signal is an absolute time and is distributed by a service base station or an LMF, and an LMU determines a sending subframe according to the absolute time; the system frame number of the downlink reference signal for starting sending is determined by timing information of the specified base station, the LMU receives and measures the downlink reference signal sent by the specified base station, and the sending start time of the downlink reference signal sent by the LMU is determined by the system frame number of the corresponding downlink reference signal for starting sending.

S402, the LMF sends the receiving configuration information of the downlink reference signal to the UE.

The LMF may directly send the reception configuration information of the downlink reference signal to the UE, may send the reception configuration information of the downlink reference signal to the UE through the serving base station, and may also send the reception configuration information of the downlink reference signal to the UE through other manners.

The receiving configuration information of the downlink reference signal may include at least one of resource configuration information of the downlink reference signal, measurement configuration information of the downlink reference signal, and reporting configuration information of the downlink reference signal. The resource configuration information of the downlink reference signal, the measurement configuration information of the downlink reference signal and the reporting configuration information of the downlink reference signal can be sent independently respectively, or can be sent in a unified way by combining. The receiving configuration information of the downlink reference signal may also be called other names, for example, the receiving configuration information may be measurement request information of the downlink reference signal, configuration request information of the downlink reference signal, and the like.

The resource configuration information of the downlink reference signal may include at least one of the following information: the bandwidth of the downlink reference signal, the transmission start time of the downlink reference signal (e.g., the time when the downlink reference signal starts to be transmitted, the system frame number when the downlink reference signal starts to be transmitted), the transmission end time of the downlink reference signal (e.g., the time when the downlink reference signal finishes to be transmitted, the system frame number when the downlink reference signal finishes to be transmitted), the transmission period of the downlink reference signal, the number of transmission periods of the downlink reference signal, the transmission duration of the downlink reference signal, the time domain resource of the downlink reference signal, the frequency domain resource of the downlink reference signal, the sequence information of the downlink reference signal, the beam information of the downlink reference signal, and the potential coverage of the downlink reference signal.

The measurement configuration information of the downlink reference signal may include at least one of the following information: the UE measures the measurement quantity of the downlink reference signal (UE measures the departure angle of the downlink reference signal, UE measures the arrival time of the downlink reference signal, and UE measures the signal power of the downlink reference signal), and UE measures the measurement period of the downlink reference signal.

The reporting configuration information of the downlink reference signal may include at least one of the following information: reporting period of the measurement information of the downlink reference signal, reporting period offset of the measurement information of the downlink reference signal, and reporting mode of the measurement information of the downlink reference signal. The reporting period of the measurement information of the downlink reference signal may be in which subframe or time interval to report, or may be at intervals of time T (T may be in milliseconds, subframes, or a specified time slot length); the reporting mode of the measurement information of the downlink reference signal can be physical layer reporting or three-layer reporting.

The above-mentioned resource configuration information of the downlink reference signal, the measurement configuration information of the downlink reference signal, and the information included in the downlink reference signal are only examples, and in the actual operation process, adjustment may be performed, for example, the measurement quantity of the downlink reference signal measured by the UE may be sent to the UE as a part of the reporting configuration information of the downlink reference signal, or the UE may be only instructed to measure or report the corresponding measurement quantity without specifying what information the measurement quantity of the downlink reference signal measured by the UE belongs to.

Taking an example of sending, by a serving base station of the UE, the receiving configuration information of the downlink reference signal to the UE, the LMF may send the receiving configuration information of the downlink reference signal to the serving base station of the UE, and if the receiving configuration information of the downlink reference signal further includes the measurement configuration information of the downlink reference signal and the reporting configuration information of the downlink reference signal, the information may also be referred to as downlink reference signal measurement request information and the like. For example, a measurement request may be sent to a serving base station of the UE through an NRPPa protocol, where the measurement request includes downlink reference signal configuration information, UE identification information, measurement quantity information, and the like, and the LMF may notify the serving base station of relevant information of LMUs participating in positioning, including number, location (for example, coverage area of which base stations), bandwidth, and corresponding downlink reference signal resources. The LMF can inform a serving base station of grouping of a plurality of downlink reference signals, each grouping is sent by one LMU and used for beam training, one grouping can comprise the downlink reference signals of a plurality of different sending beams, and the UE determines the sending beam of the uplink reference signal according to the measurement results of the downlink reference signals of the plurality of different sending beams. A serving base station of the UE configures the reception configuration information of the downlink reference signal to the UE through signaling (e.g., Radio Resource Control (RRC) or Radio Access Network (RAN) positioning configuration message). If the base station in phase 1 is the serving base station, the LMF may send the receiving configuration information of the downlink reference signal to the serving base station of the UE, and perform the step S302 in a combined manner.

Taking the example of directly sending the receiving configuration information of the downlink reference signal to the UE, the LMF may directly send the receiving configuration information of the downlink reference signal to the UE through NRPP signaling.

S403, the LMU sends a downlink reference signal to the UE, and the UE receives the downlink reference signal from the LMU.

S404, the UE sends the measurement information of the downlink reference signal to the LMF.

The UE may directly send the measurement information of the downlink reference signal to the LMF, may send the measurement information of the downlink reference signal to the LMF through the serving base station, and may also send the measurement information of the downlink reference signal to the LMF through other manners.

The UE may measure the downlink reference signal according to the reception configuration information of the downlink reference signal in step S402.

The measurement information of the downlink reference signal may include at least one of the following information: the measurement result of the downlink reference signal measured by the UE (the departure angle of the downlink reference signal measured by the UE, the arrival time of the downlink reference signal measured by the UE, and the signal power of the downlink reference signal measured by the UE), the index of the downlink reference signal measured by the UE, the identity of the UE, and the measurement frequency point of the downlink reference signal measured by the UE.

And 3, acquiring uplink reference signal resources.

As shown in fig. 5, a schematic flow chart of a method for acquiring an uplink reference signal resource provided in the embodiment of the present application includes:

s501, the LMF sends the resource request information of the uplink reference signal to the service base station.

The LMF may provide some proposed resource information to the base station.

If the target base station of phase 1 is not the serving base station of the UE. The LMF may notify the serving base station of the UE of the information of the downlink reference signal obtained in stage 1, to assist the serving base station in configuring the uplink reference signal. The serving base station may use these downlink reference signals to configure beams, directions, and the like of uplink reference signals for the UE. The LMF may determine the sending direction of the UE uplink reference signal according to the measurement result in step S404 and inform the serving base station. The information of the downlink reference signal can also be notified to the serving base station of the UE, and the serving base station obtains the measurement information of the downlink reference signal through the measurement of the UE, and determines the sending direction of the uplink reference signal.

S502, the serving base station determines the resource of the uplink reference signal which can be reserved.

In the process of determining the uplink reference signal configuration, the serving base station may interact with the neighboring base station (e.g., through an Xn interface). The serving base station may provide part of the candidate configurations for selection by the neighbor base stations.

S503, the service base station sends the resource response information of the uplink reference signal to the LMF.

And 4, configuring, transmitting, receiving and measuring the uplink reference signal.

As shown in fig. 6, a schematic flowchart of a method for configuring, transmitting, receiving and measuring an uplink reference signal provided in an embodiment of the present application includes:

s601, the LMF sends the sending configuration information of the uplink reference signal to the UE.

The LMF may directly send the sending configuration information of the uplink reference signal to the UE, may send the sending configuration information of the uplink reference signal to the UE through the serving base station, may also send the sending configuration information of the uplink reference signal to the UE through other manners, and if the sending configuration information of the uplink reference signal is sent to the UE through the serving base station, may trigger the serving base station to send the sending configuration information of the uplink reference signal to the UE through step S501.

The transmission configuration information of the uplink reference signal may include at least one of the following information: a bandwidth of the uplink reference signal, a transmission start time of the uplink reference signal (e.g., a time when the uplink reference signal starts to be transmitted, a system frame number when the uplink reference signal starts to be transmitted), a transmission end time of the uplink reference signal (e.g., a time when the uplink reference signal finishes to be transmitted, a system frame number when the uplink reference signal finishes to be transmitted), a transmission period of the uplink reference signal, a number of transmission periods of the uplink reference signal, and a transmission duration of the uplink reference signal, time domain resources of the uplink reference signal, frequency domain resources of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, and suggested power information of the uplink reference signal.

S602, the LMF sends the receiving configuration information of the uplink reference signal to the LMU.

The LMF may directly send the reception configuration information of the uplink reference signal to the LMU, may send the reception configuration information of the uplink reference signal to the LMU through the serving base station, and may also send the reception configuration information of the uplink reference signal to the LMU through other manners.

The receiving configuration information of the uplink reference signal may include at least one of resource configuration information of the uplink reference signal, measurement configuration information of the uplink reference signal, and reporting configuration information of the uplink reference signal. The resource configuration information of the uplink reference signal, the measurement configuration information of the uplink reference signal and the reporting configuration information of the uplink reference signal can be sent independently respectively, or can be sent in a unified way by combining. The receiving configuration information of the uplink reference signal may also be called other names, for example, the receiving configuration information may be measurement request information of the uplink reference signal, configuration request information of the uplink reference signal, and the like.

The resource configuration information of the uplink reference signal may include at least one of the following information: a bandwidth of the uplink reference signal, a transmission start time of the uplink reference signal (e.g., a time when the uplink reference signal starts to be transmitted, a system frame number when the uplink reference signal starts to be transmitted), a transmission end time of the uplink reference signal (e.g., a time when the uplink reference signal finishes to be transmitted, a system frame number when the uplink reference signal finishes to be transmitted), a transmission period of the uplink reference signal, a number of transmission periods of the uplink reference signal, and a transmission duration of the uplink reference signal, time domain resources of the uplink reference signal, frequency domain resources of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, and suggested power information of the uplink reference signal.

The measurement configuration information of the uplink reference signal may include at least one of the following information: the LMU measures the measurement quantity of the uplink reference signal (the LMU measures the departure angle of the uplink reference signal, the LMU measures the arrival time of the uplink reference signal, and the LMU measures the signal power of the uplink reference signal), the LMU measures the measurement period of the uplink reference signal, and the LMU measures the search window of the uplink reference signal.

The reporting configuration information of the uplink reference signal may include at least one of the following information: reporting period of the measurement information of the uplink reference signal, reporting period offset of the measurement information of the uplink reference signal, reporting mode of the measurement information of the uplink reference signal, reference time of uplink relative arrival time RTOA of the uplink reference signal, uncertainty of the arrival time of the uplink reference signal. The reporting period of the measurement information of the uplink reference signal may be in which subframe or time interval to report, or may be at intervals of time T (T may be in milliseconds, subframes, or a specified time slot length); the reporting mode of the measurement information of the uplink reference signal can be physical layer reporting or three-layer reporting.

S603, the UE sends the uplink reference signal to the LMU, and the LMU receives the uplink reference signal from the UE.

And S604, the LMU sends the measurement information of the uplink reference signal to the LMF.

The LMU may directly send the measurement information of the uplink reference signal to the LMF, may send the measurement information of the uplink reference signal to the LMF through the serving base station, and may also send the measurement information of the uplink reference signal to the LMF through other manners.

The measurement information of the uplink reference signal may include at least one of the following information: the measurement result of the uplink reference signal measured by the LMU (the departure angle of the uplink reference signal measured by the LMU, the arrival time of the uplink reference signal measured by the LMU, the signal power of the uplink reference signal measured by the LMU), the index of the uplink reference signal measured by the LMU, the identity of the UE corresponding to the uplink reference signal measured by the LMU, the measurement frequency point of the uplink reference signal measured by the LMU, and the time difference between the arrival time of the uplink reference signal and the sending time of the downlink reference signal.

It should be noted that there is no absolute sequence between the stage 1 and the stage 4, there is no absolute sequence between the steps in one stage, many sequences can be flexibly adjusted according to actual situations, and many steps can be executed in a combined manner or omitted if the serving base station and the target base station are the same base station.

In the embodiment of the application, the downlink reference signal is used for determining at least one of a transmission beam and transmission power of the uplink reference signal, the UE may measure the downlink reference signal to obtain measurement information of the downlink reference signal, may independently determine at least one of the transmission beam and transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, and may also report the measurement information of the downlink reference signal to the positioning server, the positioning server determines at least one of the transmission beam and transmission power of the uplink reference signal, and the positioning server may send the at least one of the transmission beam and transmission power of the uplink reference signal to the UE and the LMU to transmit and receive the uplink reference signal after determining the at least one of the transmission beam and transmission power of the uplink reference signal.

If the LMU transmits a plurality of downlink reference signals to the UE, and the transmission beam of each downlink reference signal is different, at this time, the uplink reference signal and the downlink reference signal may be associated, that is, one downlink reference signal is selected to receive the uplink reference signal, for example, the first downlink reference signal is selected. The transmission configuration information of the uplink reference signal in step S601 includes beam information of the uplink reference signal, where the beam information may specify the first downlink reference signal, that is, instruct the UE to transmit the uplink reference signal according to the optimal reception beam of the first downlink reference signal; the transmission configuration information of the uplink reference signal in step S601 includes recommended power information of the uplink reference signal, where the recommended power information may specify the first downlink reference signal, that is, instruct the UE to determine the transmission power of the uplink reference signal according to the path loss information of the first downlink reference signal. The uplink reference signal reception configuration information in step S602 includes beam information of the uplink reference signal, where the beam information may specify the first downlink reference signal, that is, instruct the LMU to receive the uplink reference signal on the transmission beam of the first downlink reference signal.

The main body for associating the uplink reference signal with the downlink reference signal is flexible, and can be associated by the UE according to the measurement information of a plurality of downlink reference signals, by the positioning server, by the serving base station, or by other devices.

If the LMU only sends one downlink reference signal to the UE, the downlink reference signal and the uplink reference signal may be associated by default.

In step S502, when determining the resource of the uplink reference signal, the serving base station may associate the uplink reference signal and the downlink reference signal allocated to the UE, and then notify the LMF of the association information, where the association information includes a corresponding relationship between the uplink reference signal and the downlink reference signal. In step S602, the receiving configuration information of the uplink reference signal sent by the LMF to the LMU may include the association relationship, and the LMU may know, through the association relationship, which beam should be used to receive the uplink reference signal sent by the UE, for example, the association relationship is that SRS #1 is associated with CSI-RS #1 sent by the LMU, and then the LMU may receive SRS #1 sent by the UE using an uplink beam (for example, the same beam weight) corresponding to a downlink beam that sends CSI-RS # 1. Further, the LMU may also perform Round Trip Time (RTT) measurement using the association relationship, for example, the LMU measures a time difference between a starting point of a subframe i of an uplink reference signal sent by the UE and a subframe i of a certain downlink reference signal sent by the LMU; the LMU measures the time difference between the starting point of a subframe i of an uplink reference signal sent by the UE and a subframe j of a certain downlink reference signal closest to the LMU. If the serving base station and the target base station are the same base station, the association relationship determined by the serving base station may be included in the resource response information of the downlink reference signal in step S304, that is, the corresponding relationship between the uplink reference signal and the downlink reference signal is fed back while the resource configuration of the downlink reference signal is fed back, or may be included in the resource response information of the uplink reference signal in step S503, that is, the corresponding relationship between the uplink reference signal and the downlink reference signal is fed back while the resource configuration of the uplink reference signal is fed back. In a possible implementation manner, the resource response information of the downlink reference signal sent by the target base station to the LMF in S304 may include a corresponding relationship between the uplink reference signal and the downlink reference signal, for example, when the LMU only sends one downlink reference signal to the UE.

In the embodiment of the present application, an LMU sends a downlink reference signal to a UE, the UE sends an uplink reference signal to the LMU, resources of the downlink reference signal may be allocated by a base station or may be allocated by a location server, and resources of the uplink reference signal are allocated by the base station. In general, the LMU itself does not have the capability of allocating resources, the location server in the embodiment of the present application requests resources of a downlink reference signal for the LMU, the LMU transmits the downlink reference signal by using the resources requested by the location server, and the downlink reference signal transmitted by the LMU may be used to determine at least one of a transmission beam and a transmission power of an uplink reference signal of the UE, and may also be used to determine a reception beam for the LMU to receive the uplink reference signal.

If the serving base station of the UE and the target base station of the LMU are the same base station, the stage 1 and the stage 3 may be executed in a combined manner, that is, the LMF requests the base station to simultaneously allocate resources of the downlink reference signal and resources of the uplink reference signal, and the resource request information and the resource response information may further include a corresponding relationship between the downlink reference signal and the uplink reference signal.

In this embodiment, the serving base station allocates resources of the uplink reference signal according to the measurement information of the downlink reference signal, for example, allocates a beam or transmit power of the uplink reference signal. In one possible implementation, the LMU may not need to select the uplink reference signal reception beam, for example, the LMU completes reception of the uplink reference signal in a beam scanning manner, or the LMU has only one downlink beam, i.e., only one corresponding reception beam, or the LMU explicitly knows which reception beam should be used (e.g., the LMU transceives using a wide beam and knows the approximate location of the UE in advance). If the LMU does not need to select the uplink reference signal receiving beam, step S404 in this embodiment may be omitted, that is, the UE is not required to report the measurement information of the downlink reference signal, the UE is directly designated to transmit the uplink reference signal according to a beam or transmission power corresponding to a certain downlink reference signal, and the LMU is directly designated to receive the uplink reference signal according to a beam corresponding to a certain downlink reference signal.

The positioning method described in the embodiments of the present application, specifically, the method for determining the beam or the transmit power of the uplink reference signal, may be applied to various uplink positioning technologies, including but not limited to: uplink positioning methods based on measuring time of arrival (TOA), time of flight (TOF), uplink signal power, etc., such as uplink TOA positioning, uplink TOF positioning, Enhanced cell identification (Enhanced cell ID) positioning technology based on uplink measurement, etc.; an Uplink time difference of arrival (UTDOA) location based on an Uplink relative arrival time of arrival (UL-RtoA); uplink angle location based on uplink angle of arrival measurements. It is also applicable to various positioning techniques involving the transmission of uplink reference signals, including but not limited to: positioning technology based on measurement quantities such as Round Trip Time (RTT), base station receiving and transmitting time difference, UE receiving and transmitting time difference, and the like.

If the embodiment of the present application is applied to a high frequency system (e.g., FR2), the transmission beam and the transmission power of the uplink reference signal may be determined according to the downlink reference signal, and if the embodiment is applied to a low frequency system (e.g., FR1), the transmission power of the uplink reference signal may be determined according to the downlink reference signal, where FR1 and FR2 denote frequency ranges (frequency range, FR) corresponding to 750MHz to 6000MHz (FR1) and 24250MHz to 52600MHz (FR2), respectively.

In the embodiment of the present application, the downlink reference signal for determining the transmission beam of the uplink reference signal and the downlink reference signal for determining the transmission power of the uplink reference signal may be the same or different. The downlink reference signal used for determining the transmission beam of the uplink reference signal may also be referred to as a downlink reference signal used for determining a spatial filter reference signal (spatial transmission filter) or spatial correlation information (spatial correlation info RS).

Fig. 7 is a schematic structural diagram of a communication device 10 according to the embodiment of the present application, as shown in fig. 7, the communication device may be one of an LMU, a UE, a location server, and a base station, or may be a chip or a circuit, for example, a chip or a circuit that may be disposed on one of the LMU, the UE, the location server, and the base station.

The communication device 7 may include a processing unit 11 and a storage unit 12, the storage unit 12 being configured to store instructions, the processing unit 11 being configured to execute the instructions stored by the storage unit 12 to cause the communication device 10 to implement the steps performed by one of the LMU, the UE, the location server and the base station in the method as described above.

Further, the communication device 7 may also comprise an input 13 and an output 14. Further, the processing unit 11, the memory unit 12, the input port 13 and the output port 14 may communicate with each other via internal connection paths, passing control and/or data signals. The storage unit 12 is used for storing a computer program, and the processing unit 11 may be used for calling and running the calculation program from the storage unit 12 to control the input port 13 to receive a signal and the output port 14 to send a signal, so as to complete the steps executed by one of the LMU, the UE, the location server and the base station in the above method. The storage unit 12 may be integrated in the processing unit 11 or may be provided separately from the processing unit 11.

Alternatively, if the communication device 10 is a communication device, the input port 13 is a receiver and the output port 14 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Alternatively, if the communication device 10 is a chip or a circuit, the input port 13 is an input interface, and the output port 14 is an output interface.

As an implementation manner, the functions of the input port 13 and the output port 14 may be implemented by a transceiver circuit or a dedicated transceiver chip. The processing unit 11 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processing unit or a general-purpose chip.

As another implementation manner, a receiving apparatus provided in the embodiment of the present application may be implemented by using a general-purpose computer. Program codes that will realize the functions of the processing unit 11, the input port 13, and the output port 14 are stored in the storage unit 12, and a general-purpose processing unit realizes the functions of the processing unit 11, the input port 13, and the output port 14 by executing the codes in the storage unit 12.

In one implementation, the communication device 10 is an LMU, and the output port 14 is configured to send a downlink reference signal to a user equipment UE, where the downlink reference signal is used to determine at least one of a transmission beam and a transmission power of an uplink reference signal, and the uplink reference signal is used to locate the UE; an input port 14 for receiving the uplink reference signal from the UE.

Optionally, before the output port 14 sends the downlink reference signal to the user equipment UE, the input port 14 is further configured to obtain sending configuration information of the downlink reference signal;

the output port 14 is configured to send a downlink reference signal to the user equipment UE according to the sending configuration information of the downlink reference signal.

Optionally, the input port 14 is configured to receive sending configuration information of a downlink reference signal from a positioning server.

Optionally, the sending configuration information of the downlink reference signal includes at least one of the following information: the downlink reference signal may include a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a time at which the downlink reference signal starts to be transmitted, a system frame number at which the downlink reference signal starts to be transmitted), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, and a potential coverage of the downlink reference signal.

Optionally, before the input port 14 receives the uplink reference signal from the UE, the input port 14 is further configured to obtain reception configuration information of the uplink reference signal; the output port 14 is configured to receive the uplink reference signal from the UE according to the reception configuration information of the uplink reference signal.

Optionally, the input port 14 is configured to receive the receiving configuration information of the uplink reference signal from the positioning server.

Optionally, the receiving configuration information of the uplink reference signal includes at least one of the following information: bandwidth of the uplink reference signal, transmission start time of the uplink reference signal (for example, the time of starting transmission of the uplink reference signal, a system frame number of starting transmission of the uplink reference signal), transmission end time of the uplink reference signal, transmission period of the uplink reference signal, the number of transmission periods of the uplink reference signal, transmission duration of the uplink reference signal, time domain resource of the uplink reference signal, frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, recommended power information of the uplink reference signal, measurement quantity of the LMU for measuring the uplink reference signal, measurement period of the LMU for measuring the uplink reference signal, search window of the LMU for measuring the uplink reference signal, and the search window of the LMU for transmitting the, Reporting period of the measurement information of the uplink reference signal, reporting period offset of the measurement information of the uplink reference signal, reporting mode of the measurement information of the uplink reference signal, reference time of uplink relative arrival time RTOA of the uplink reference signal, and uncertainty of the arrival time of the uplink reference signal.

Optionally, after the input port 14 receives the uplink reference signal from the UE, the input port 14 is further configured to obtain measurement information of the uplink reference signal according to the uplink reference signal, where the measurement information of the uplink reference signal includes at least one of the following information: the method comprises the steps that a measurement result of an uplink reference signal measured by an LMU (local mean square), an index of the uplink reference signal measured by the LMU, an identifier of UE (user equipment) corresponding to the uplink reference signal measured by the LMU, a measurement frequency point of the uplink reference signal measured by the LMU, and a time difference between the arrival time of the uplink reference signal and the sending time of the downlink reference signal are obtained; the output port 14 is further configured to send measurement information of the uplink reference signal to a location server.

In one implementation, the communication device 10 is a UE, and the input port 14 is configured to receive a downlink reference signal from a location measurement unit LMU; a processing unit 11, configured to obtain at least one of a transmission beam and a transmission power of an uplink reference signal according to the downlink reference signal, where the uplink reference signal is used to locate the UE; and an output port 14, configured to send the uplink reference signal to the LMU according to at least one of a transmission beam and a transmission power of the uplink reference signal.

Optionally, before the input port 14 receives the downlink reference signal from the location measurement unit LMU, the input port 14 is further configured to obtain the receiving configuration information of the downlink reference signal; the input port 14 is configured to receive a downlink reference signal from a location measurement unit LMU according to the reception configuration information of the downlink reference signal.

Optionally, the input port 14 is configured to receive configuration information of downlink reference signals from a positioning server.

Optionally, the receiving configuration information of the downlink reference signal includes at least one of the following information: a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a transmission start time of the downlink reference signal, a system frame number of the downlink reference signal), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, a potential coverage of the downlink reference signal, a measurement quantity of the downlink reference signal measured by the UE, a measurement period of the downlink reference signal measured by the UE, a reporting period of the measurement information of the downlink reference signal, a reporting period offset of the measurement information of the downlink reference signal, a transmission delay of the downlink reference signal, a, And reporting the measurement information of the downlink reference signal.

Optionally, the processing unit 11 is configured to acquire measurement information of the downlink reference signal, and acquire at least one of a transmission beam and a transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, or the processing unit is configured to acquire the measurement information of the downlink reference signal and transmit the measurement information of the downlink reference signal to a positioning server, where the measurement information of the downlink reference signal is used to acquire at least one of a transmission beam and a transmission power of the uplink reference signal.

Optionally, the measurement information of the downlink reference signal includes at least one of the following information: the method comprises the steps of measuring the measurement result of the downlink reference signal measured by the UE, the index of the downlink reference signal measured by the UE, the identification of the UE and the measurement frequency point of the downlink reference signal measured by the UE.

Optionally, before the output port 14 sends the uplink reference signal to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal, the input port 14 is further configured to obtain sending configuration information of the uplink reference signal; the output port 14 is configured to send the uplink reference signal to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal and the sending configuration information of the uplink reference signal.

Optionally, the input port 14 is configured to receive transmission configuration information of an uplink reference signal from a positioning server.

Optionally, the sending configuration information of the uplink reference signal includes at least one of the following information: bandwidth of the uplink reference signal, transmission start time of the uplink reference signal (for example, a time at which the uplink reference signal starts to be transmitted, a system frame number at which the uplink reference signal starts to be transmitted), transmission end time of the uplink reference signal, a transmission period of the uplink reference signal, the number of transmission periods of the uplink reference signal, transmission duration of the uplink reference signal, time domain resources of the uplink reference signal, frequency domain resources of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, and proposed power information of the uplink reference signal.

In one implementation, the communication device 10 is a location server, and the output port 14 is configured to send, to a location measurement unit LMU, transmission configuration information of a downlink reference signal, where the downlink reference signal is used to determine at least one of a transmission beam and a transmission power of an uplink reference signal, the uplink reference signal is used to locate a user equipment UE, send reception configuration information of the downlink reference signal to the UE, send transmission configuration information of the uplink reference signal to the UE, and send reception configuration information of the uplink reference signal to the LMU; an input port 14 for receiving measurement information of uplink reference signals from the LMUs.

Optionally, before the output port 14 sends the sending configuration information of the downlink reference signal to the LMU, the output port 14 is further configured to send resource request information of the downlink reference signal to the target base station; the input port 14 is further configured to receive resource response information of a downlink reference signal from a target base station, and the positioning server further includes a processing unit 11, where the processing unit 11 is configured to obtain sending configuration information of the downlink reference signal and receiving configuration information of the downlink reference signal according to the resource response information of the downlink reference signal.

Optionally, after the output port 14 sends the reception configuration information of the downlink reference signal to the UE, the input port 14 is further configured to receive measurement information of the downlink reference signal from the UE, and the positioning server further includes a processing unit 11, where the processing unit 11 is configured to obtain at least one of a transmission beam and transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, and obtain the transmission configuration information of the uplink reference signal according to at least one of the transmission beam and the transmission power of the uplink reference signal.

Optionally, before the output port 14 sends the sending configuration information of the uplink reference signal to the UE, the output port 14 is further configured to send resource request information of the uplink reference signal to a serving base station, the input port 14 is further configured to receive resource response information of the uplink reference signal from the serving base station, the positioning server further includes a processing unit 11, and the processing unit 11 is configured to obtain the sending configuration information of the uplink reference signal and the receiving and sending configuration information of the uplink reference signal according to the resource response information of the uplink reference signal.

In one implementation, the communication device 10 is a UE base station, and the input port 14 is configured to receive resource request information of a downlink reference signal from a positioning server; an output port 14, configured to send resource response information of a downlink reference signal to the positioning server, where the resource response information of the downlink reference signal is used to determine sending configuration information of the downlink reference signal, the downlink reference signal is used to determine at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used to position user equipment UE.

Optionally, the input port 14 is further configured to receive resource request information of an uplink reference signal from the positioning server; the output port 14 is further configured to send resource response information of an uplink reference signal to the positioning server.

The functions and actions of the modules or units in the apparatus 10 listed above are only exemplary, and the modules or units in the apparatus 10 may be configured to perform the actions or processes performed by the communication device (e.g., one of the LMU, the UE, the positioning server, and the base station) in the above method, and here, detailed descriptions thereof are omitted to avoid redundancy.

For the concepts, explanations, detailed descriptions and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 10, reference is made to the descriptions of the foregoing methods or other embodiments, and no further description is given here.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application 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 EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous Dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are generated in whole or in part when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the size of the serial number of each process described above does not mean that the execution sequence of each process is preceded by the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 application. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in this application, it should be understood that the disclosed system, 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 units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or 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, and may be in an electrical, mechanical or other form.

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 application 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 functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or portions thereof, 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) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A positioning method is applied to a Location Measurement Unit (LMU), and is characterized by comprising the following steps:

sending a downlink reference signal to User Equipment (UE), wherein the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning the UE;

receiving the uplink reference signal from the UE.

2. The method of claim 1, wherein before the sending the downlink reference signal to the UE, further comprising: acquiring sending configuration information of the downlink reference signal;

the sending the downlink reference signal to the user equipment UE includes: and sending the downlink reference signal to User Equipment (UE) according to the sending configuration information of the downlink reference signal.

3. The method of claim 2, wherein the obtaining the transmission configuration information of the downlink reference signal comprises:

and receiving the sending configuration information of the downlink reference signal from the positioning server.

4. The method of claim 2, wherein the transmission configuration information of the downlink reference signal comprises at least one of the following information: the downlink reference signal may be a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (for example, a time at which the downlink reference signal starts to be transmitted, a system frame number at which the downlink reference signal starts to be transmitted), a transmission end time of the downlink reference signal, a transmission cycle of the downlink reference signal, a number of transmission cycles of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, and a potential coverage of the downlink reference signal.

5. The method of claim 1, wherein before the receiving the uplink reference signal from the UE, further comprising:

acquiring receiving configuration information of the uplink reference signal;

the receiving the uplink reference signal from the UE comprises: and receiving the uplink reference signal from the UE according to the receiving configuration information of the uplink reference signal.

6. The method of claim 5, wherein the obtaining the reception configuration information of the uplink reference signal comprises:

and receiving the receiving configuration information of the uplink reference signal from the positioning server.

7. The method of claim 5, wherein the reception configuration information of the uplink reference signal comprises at least one of the following information: bandwidth of the uplink reference signal, transmission start time of the uplink reference signal (for example, the time of starting transmission of the uplink reference signal, a system frame number of starting transmission of the uplink reference signal), transmission end time of the uplink reference signal, transmission period of the uplink reference signal, the number of transmission periods of the uplink reference signal, transmission duration of the uplink reference signal, time domain resource of the uplink reference signal, frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, recommended power information of the uplink reference signal, measurement quantity of the LMU for measuring the uplink reference signal, measurement period of the LMU for measuring the uplink reference signal, search window of the LMU for measuring the uplink reference signal, and the like, Reporting period of the measurement information of the uplink reference signal, reporting period offset of the measurement information of the uplink reference signal, reporting mode of the measurement information of the uplink reference signal, reference time of uplink relative arrival time RTOA of the uplink reference signal, and uncertainty of the arrival time of the uplink reference signal.

8. The method of claim 1, after receiving the uplink reference signal from the UE, further comprising:

acquiring measurement information of an uplink reference signal according to the uplink reference signal, wherein the measurement information of the uplink reference signal comprises at least one of the following information: the method comprises the steps that a measurement result of an uplink reference signal measured by an LMU (local mean square), an index of the uplink reference signal measured by the LMU, an identifier of UE (user equipment) corresponding to the uplink reference signal measured by the LMU, a measurement frequency point of the uplink reference signal measured by the LMU, and a time difference between the arrival time of the uplink reference signal and the sending time of the downlink reference signal are obtained;

and sending the measurement information of the uplink reference signal to a positioning server.

9. A positioning method applied to User Equipment (UE) is characterized by comprising the following steps:

receiving a downlink reference signal from a location measurement unit LMU;

acquiring at least one of a transmission beam and transmission power of an uplink reference signal according to the downlink reference signal, wherein the uplink reference signal is used for positioning the UE;

and sending the uplink reference signal to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal.

10. The method of claim 9, wherein before receiving the downlink reference signal from the location measurement unit LMU, the method further comprises:

acquiring receiving configuration information of the downlink reference signal;

the receiving of the downlink reference signal from the location measurement unit LMU includes: and receiving the downlink reference signal from the location measurement unit LMU according to the receiving configuration information of the downlink reference signal.

11. The method of claim 10, wherein the obtaining the receiving configuration information of the downlink reference signal comprises:

and receiving the receiving configuration information of the downlink reference signal from the positioning server.

12. The method of claim 10, wherein the receiving configuration information of the downlink reference signal comprises at least one of the following information: a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a time at which the downlink reference signal starts to be transmitted, a system frame number at which the downlink reference signal starts to be transmitted), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, a potential coverage of the downlink reference signal, a measurement quantity of the downlink reference signal measured by the UE, a measurement period of the downlink reference signal measured by the UE, a reporting period of the measurement information of the downlink reference signal, a reporting period offset of the measurement information of the downlink reference signal, a transmission delay of the downlink reference signal, And reporting the measurement information of the downlink reference signal.

13. The method of claim 9, wherein the obtaining at least one of a transmission beam and a transmission power of the uplink reference signal according to the downlink reference signal comprises:

acquiring measurement information of the downlink reference signal;

obtaining at least one of a transmission beam and a transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, or

And sending the measurement information of the downlink reference signal to a positioning server, wherein the measurement information of the downlink reference signal is used for acquiring at least one of a transmission beam and transmission power of the uplink reference signal.

14. The method of claim 13, wherein the measurement information of the downlink reference signal comprises at least one of the following information: the measurement result of the downlink reference signal measured by the UE, the index of the downlink reference signal measured by the UE, the identity of the UE and the measurement frequency point of the downlink reference signal measured by the UE.

15. The method of claim 9, wherein before the transmitting the uplink reference signal to the LMU according to at least one of the transmission beam and the transmission power of the uplink reference signal, further comprising:

acquiring sending configuration information of the uplink reference signal;

the transmitting the uplink reference signal to the LMU according to at least one of the transmission beam and the transmission power of the uplink reference signal includes: and the uplink reference signal is sent to the LMU according to at least one of the sending beam and the sending power of the uplink reference signal and the sending configuration information of the uplink reference signal.

16. The method of claim 15, wherein the obtaining the transmission configuration information of the uplink reference signal comprises:

and receiving the sending configuration information of the uplink reference signal from the positioning server.

17. The method of claim 15, wherein the transmission configuration information of the uplink reference signal comprises at least one of the following information: bandwidth of the uplink reference signal, a transmission start time of the uplink reference signal (for example, a time at which the uplink reference signal starts to be transmitted, a system frame number at which the uplink reference signal starts to be transmitted), a transmission end time of the uplink reference signal, a transmission period of the uplink reference signal, a number of transmission periods of the uplink reference signal, a transmission duration of the uplink reference signal, a time domain resource of the uplink reference signal, a frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, a potential coverage of the uplink reference signal, and proposed power information of the uplink reference signal.

18. A positioning method is applied to a positioning server, and is characterized by comprising the following steps:

sending configuration information of a downlink reference signal to a location measurement unit LMU, wherein the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning User Equipment (UE);

sending the receiving configuration information of the downlink reference signal to the UE;

sending the sending configuration information of the uplink reference signal to the UE;

sending configuration information of the uplink reference signal to the LMU;

and receiving the measurement information of the uplink reference signal from the LMU.

19. The method of claim 18, wherein before sending the sending configuration information of the downlink reference signal to the LMU, the method further comprises:

sending resource request information of a downlink reference signal to a target base station;

receiving resource response information of a downlink reference signal from a target base station;

and acquiring the sending configuration information of the downlink reference signal and the receiving configuration information of the downlink reference signal according to the resource response information of the downlink reference signal.

20. The method of claim 18, wherein the sending the reception configuration information of the downlink reference signal to the UE further comprises:

receiving measurement information of a downlink reference signal from the UE;

acquiring at least one of a transmission beam and transmission power of the uplink reference signal according to the measurement information of the downlink reference signal;

and acquiring the transmission configuration information of the uplink reference signal according to at least one of the transmission beam and the transmission power of the uplink reference signal.

21. The method of claim 1, wherein before the sending the transmission configuration information of the uplink reference signal to the UE, further comprising:

sending resource request information of an uplink reference signal to a serving base station;

receiving resource response information of an uplink reference signal from a serving base station;

and acquiring the sending configuration information of the uplink reference signal and the receiving sending configuration information of the uplink reference signal according to the resource response information of the uplink reference signal.

22. A positioning method applied to a base station is characterized by comprising the following steps:

receiving resource request information of a downlink reference signal from a positioning server;

and sending resource response information of a downlink reference signal to the positioning server, wherein the resource response information of the downlink reference signal is used for determining sending configuration information of the downlink reference signal, the downlink reference signal is used for determining at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used for positioning User Equipment (UE).

23. The method of claim 22, further comprising:

receiving resource request information of an uplink reference signal from the positioning server;

and sending resource response information of the uplink reference signal to the positioning server.

24. A communication device, the communication device being a location measurement unit, LMU, comprising:

a sending unit, configured to send a downlink reference signal to a user equipment UE, where the downlink reference signal is used to determine at least one of a transmission beam and a transmission power of an uplink reference signal, and the uplink reference signal is used to locate the UE;

a receiving unit, configured to receive the uplink reference signal from the UE.

25. The communications apparatus according to claim 24, wherein before the transmitting unit transmits the downlink reference signal to the UE, the receiving unit is further configured to obtain transmission configuration information of the downlink reference signal;

the sending unit is configured to send a downlink reference signal to the user equipment UE according to the sending configuration information of the downlink reference signal.

26. The communications apparatus as claimed in claim 25, wherein the receiving unit is configured to receive the sending configuration information of the downlink reference signal from the positioning server.

27. The communications apparatus of claim 25, wherein the transmission configuration information of the downlink reference signal comprises at least one of the following information: the downlink reference signal may be a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (for example, a time at which the downlink reference signal starts to be transmitted, a system frame number at which the downlink reference signal starts to be transmitted), a transmission end time of the downlink reference signal, a transmission cycle of the downlink reference signal, a number of transmission cycles of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, and a potential coverage of the downlink reference signal.

28. The communications apparatus as claimed in claim 24, wherein before the receiving unit receives the uplink reference signal from the UE, the receiving unit is further configured to obtain reception configuration information of the uplink reference signal;

the sending unit is configured to receive the uplink reference signal from the UE according to the reception configuration information of the uplink reference signal.

29. The apparatus according to claim 28, wherein the receiving unit is configured to receive the reception configuration information of the uplink reference signal from the positioning server.

30. The communications apparatus of claim 28, wherein the reception configuration information of the uplink reference signal comprises at least one of the following information: bandwidth of the uplink reference signal, transmission start time of the uplink reference signal (for example, the time of starting transmission of the uplink reference signal, a system frame number of starting transmission of the uplink reference signal), transmission end time of the uplink reference signal, transmission period of the uplink reference signal, the number of transmission periods of the uplink reference signal, transmission duration of the uplink reference signal, time domain resource of the uplink reference signal, frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, potential coverage of the uplink reference signal, recommended power information of the uplink reference signal, measurement quantity of the LMU for measuring the uplink reference signal, measurement period of the LMU for measuring the uplink reference signal, search window of the LMU for measuring the uplink reference signal, and the like, Reporting period of the measurement information of the uplink reference signal, reporting period offset of the measurement information of the uplink reference signal, reporting mode of the measurement information of the uplink reference signal, reference time of uplink relative arrival time RTOA of the uplink reference signal, and uncertainty of the arrival time of the uplink reference signal.

31. The communication apparatus according to claim 24, wherein after the receiving unit receives the uplink reference signal from the UE, the receiving unit is further configured to obtain measurement information of the uplink reference signal according to the uplink reference signal, where the measurement information of the uplink reference signal includes at least one of the following information: the method comprises the steps that a measurement result of an uplink reference signal measured by an LMU (local mean square), an index of the uplink reference signal measured by the LMU, an identifier of UE (user equipment) corresponding to the uplink reference signal measured by the LMU, a measurement frequency point of the uplink reference signal measured by the LMU, and a time difference between the arrival time of the uplink reference signal and the sending time of the downlink reference signal are obtained;

the sending unit is further configured to send measurement information of the uplink reference signal to a positioning server.

32. A communications apparatus, the communications apparatus being a user equipment, UE, comprising:

the receiving unit is used for receiving a downlink reference signal from the location measurement unit LMU;

a processing unit, configured to obtain at least one of a transmission beam and a transmission power of an uplink reference signal according to the downlink reference signal, where the uplink reference signal is used to locate the UE;

a sending unit, configured to send the uplink reference signal to the LMU according to at least one of a sending beam and sending power of the uplink reference signal.

33. The communication apparatus according to claim 32, wherein before the receiving unit receives the downlink reference signal from the location measurement unit LMU, the receiving unit is further configured to obtain reception configuration information of the downlink reference signal;

the receiving unit is used for receiving the downlink reference signal from the location measurement unit LMU according to the receiving configuration information of the downlink reference signal.

34. The communications apparatus as claimed in claim 33, wherein the receiving unit is configured to receive the receiving configuration information of the downlink reference signal from the positioning server.

35. The communications apparatus of claim 33, wherein the reception configuration information of the downlink reference signal comprises at least one of the following information: a bandwidth of the downlink reference signal, a transmission start time of the downlink reference signal (e.g., a time at which the downlink reference signal starts to be transmitted, a system frame number at which the downlink reference signal starts to be transmitted), a transmission end time of the downlink reference signal, a transmission period of the downlink reference signal, a number of transmission periods of the downlink reference signal, a transmission duration of the downlink reference signal, a time domain resource of the downlink reference signal, a frequency domain resource of the downlink reference signal, sequence information of the downlink reference signal, beam information of the downlink reference signal, a potential coverage of the downlink reference signal, a measurement quantity of the downlink reference signal measured by the UE, a measurement period of the downlink reference signal measured by the UE, a reporting period of the measurement information of the downlink reference signal, a reporting period offset of the measurement information of the downlink reference signal, a transmission delay of the downlink reference signal, And reporting the measurement information of the downlink reference signal.

36. The communications apparatus according to claim 24, wherein the processing unit is configured to obtain measurement information of the downlink reference signal, and obtain at least one of a transmission beam and a transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, or the processing unit is configured to obtain the measurement information of the downlink reference signal, and send the measurement information of the downlink reference signal to a positioning server, and the measurement information of the downlink reference signal is used to obtain at least one of a transmission beam and a transmission power of the uplink reference signal.

37. The communications apparatus of claim 36, wherein the measurement information of the downlink reference signal comprises at least one of the following information: the measurement result of the downlink reference signal measured by the UE, the index of the downlink reference signal measured by the UE, the identity of the UE and the measurement frequency point of the downlink reference signal measured by the UE.

38. The communications apparatus as claimed in claim 24, wherein before the transmitting unit transmits the uplink reference signal to the LMU according to at least one of a transmission beam and a transmission power of the uplink reference signal, the receiving unit is further configured to obtain transmission configuration information of the uplink reference signal;

the sending unit is configured to send the uplink reference signal to the LMU according to at least one of a sending beam and sending power of the uplink reference signal and sending configuration information of the uplink reference signal.

39. The apparatus according to claim 38, wherein the receiving unit is configured to receive the transmission configuration information of the uplink reference signal from the positioning server.

40. The communications apparatus of claim 38, wherein the transmission configuration information of the uplink reference signal comprises at least one of the following information: bandwidth of the uplink reference signal, a transmission start time of the uplink reference signal (for example, a time at which the uplink reference signal starts to be transmitted, a system frame number at which the uplink reference signal starts to be transmitted), a transmission end time of the uplink reference signal, a transmission period of the uplink reference signal, a number of transmission periods of the uplink reference signal, a transmission duration of the uplink reference signal, a time domain resource of the uplink reference signal, a frequency domain resource of the uplink reference signal, sequence information of the uplink reference signal, beam information of the uplink reference signal, a potential coverage of the uplink reference signal, and proposed power information of the uplink reference signal.

41. A communications device, the communications device being a location server, comprising:

a sending unit, configured to send sending configuration information of a downlink reference signal to a location measurement unit LMU, where the downlink reference signal is used to determine at least one of a sending beam and sending power of an uplink reference signal, the uplink reference signal is used to locate a user equipment UE, send receiving configuration information of the downlink reference signal to the UE, send sending configuration information of the uplink reference signal to the UE, and send receiving configuration information of the uplink reference signal to the LMU;

and the receiving unit is used for receiving the measurement information of the uplink reference signal from the LMU.

42. The communication apparatus according to claim 41, wherein before the sending unit sends the sending configuration information of the downlink reference signal to the LMU, the sending unit is further configured to send resource request information of the downlink reference signal to the target base station; the receiving unit is further configured to receive resource response information of a downlink reference signal from a target base station, and the positioning server further includes a processing unit, where the processing unit is configured to obtain sending configuration information of the downlink reference signal and receiving configuration information of the downlink reference signal according to the resource response information of the downlink reference signal.

43. The communications apparatus according to claim 41, wherein after the transmitting unit transmits the receiving configuration information of the downlink reference signal to the UE, the receiving unit is further configured to receive measurement information of the downlink reference signal from the UE, and the positioning server further includes a processing unit configured to obtain at least one of a transmission beam and a transmission power of the uplink reference signal according to the measurement information of the downlink reference signal, and obtain the transmitting configuration information of the uplink reference signal according to at least one of the transmission beam and the transmission power of the uplink reference signal.

44. The apparatus according to claim 41, wherein before the sending unit sends the sending configuration information of the uplink reference signal to the UE, the sending unit is further configured to send resource request information of the uplink reference signal to the serving base station, the receiving unit is further configured to receive resource response information of the uplink reference signal from the serving base station, and the positioning server further includes a processing unit configured to obtain the sending configuration information of the uplink reference signal and the receiving configuration information of the uplink reference signal according to the resource response information of the uplink reference signal.

45. A communications apparatus, the communications apparatus being a base station, comprising:

a receiving unit, configured to receive resource request information of a downlink reference signal from a location server;

a sending unit, configured to send resource response information of a downlink reference signal to the positioning server, where the resource response information of the downlink reference signal is used to determine sending configuration information of the downlink reference signal, the downlink reference signal is used to determine at least one of a sending beam and sending power of an uplink reference signal, and the uplink reference signal is used to position user equipment UE.

46. The communication device of claim 45,

the receiving unit is further configured to receive resource request information of an uplink reference signal from the positioning server;

the sending unit is further configured to send resource response information of the uplink reference signal to the positioning server.