CN115314991A - Downlink AoD positioning method and device, user equipment and network side equipment - Google Patents

Abstract

A downlink AoD positioning method and device, user equipment and network side equipment are provided, wherein the downlink AoD positioning method comprises the following steps: receiving configuration information sent by a network side device, wherein the configuration information comprises a plurality of PRS resources sent by at least one TRP; measuring the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources; and reporting the measurement result so that the network side equipment determines the position coordinate of the current user equipment according to the measurement result. The technical scheme of the invention can improve the positioning accuracy.

Description

Downlink AoD positioning method and device, user equipment and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a downlink AoD positioning method and apparatus, a user equipment, and a network side device.

Background

In a wireless communication system, there are many common positioning methods, such as Time Difference Of Arrival (TDOA) positioning based on timing measurement, round-Trip-Time (RTT) positioning, angle Of Arrival (AoA) and Angle Of Departure (AoD) positioning based on Angle measurement, and the like. The downlink AoD-based positioning method measures and feeds back downlink AoD information from a plurality of Transmission Receive Points (TRPs) to target User Equipment (UE) through the target UE, and can uniquely determine the position of the target UE by combining position coordinates of the TRPs.

In a New Radio (NR) system, a network side configures, to a target UE, at least one Positioning Reference Signal (PRS) resource sent by a TRP, where each PRS resource is sent in a beamforming manner, and at this time, each PRS resource corresponds to a downlink AoD; the target UE measures PRS resources and reports the PRS resource index with the maximum Reference Signal Receiving Power (RSRP) and the RSRP value thereof to the network side; and the network side maps the reported PRS resource index to obtain downlink AoD between each TRP and the target UE, and estimates the position coordinate of the UE by using the downlink AoD.

However, if the UE reports multiple RSRPs and/or PRS resource indexes, the network side can only select the PRS resource with the largest RSRP and map the PRS resource to the downlink AoD. When the AoD corresponding to the UE location is not aligned with the AoD corresponding to the strongest beam, an error occurs in the AoD mapping manner on the network side, thereby causing an error in location estimation.

Disclosure of Invention

The invention solves the technical problem of how to improve the positioning accuracy.

In order to solve the above technical problem, an embodiment of the present invention provides a downlink AoD positioning method, where the downlink AoD positioning method includes: receiving configuration information sent by a network side device, wherein the configuration information comprises a plurality of PRS resources sent by at least one TRP; measuring the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources; and reporting the measurement result so that the network side equipment determines the position coordinate of the current user equipment according to the measurement result.

Optionally, the configuration information further includes beam information corresponding to the plurality of PRS resources and/or antenna information corresponding to the PRS resources.

Optionally, the measuring the plurality of PRS resources includes: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; and determining the absolute departure angle according to the signal quality corresponding to the plurality of PRS resources.

Optionally, the configuration information includes a beam departure angle of a transmission beam of the plurality of PRS resources, and the measuring the plurality of PRS resources includes: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; and determining the reference PRS resource, and determining an included angle of a beam departure angle of a transmission beam relative to the reference PRS resource as the relative departure angle according to the signal quality corresponding to the plurality of PRS resources.

Optionally, the reference PRS resource is determined in one or more of the following manners: determining the reference PRS resources according to the signal quality corresponding to the plurality of PRS resources; or, determining the reference PRS resource according to the configuration information.

Optionally, the reference PRS resources include one or more of: PRS resources with the smallest included angle between the beam departure angle and the absolute departure angle of a transmission beam, PRS resources with the best signal quality, and reference PRS resources indicated by the configuration information.

In order to solve the above technical problem, an embodiment of the present invention further discloses a downlink AoD positioning method, where the downlink AoD positioning method includes: configuring a plurality of PRS resources transmitted by at least one TRP and transmitting the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources, and obtaining a measurement result, wherein the measurement result comprises an absolute separation angle of a position of the user equipment to be positioned and the position of the at least one TRP, or the measurement result comprises an index of a reference PRS resource transmitted by the at least one TRP and a relative separation angle of a transmission beam of the user equipment to be positioned and the reference PRS resource, and the reference PRS resource is determined from the plurality of PRS resources; receiving the measurement result; and determining the position coordinates of the user equipment to be positioned at least according to the measurement result.

Optionally, at least determining the position coordinate of the user equipment to be positioned according to the measurement result includes: determining the position coordinate of the user equipment to be positioned according to at least the position coordinate of the at least one TRP and the absolute departure angle; or, determining the absolute departure angle according to the beam departure angle and the relative departure angle of the transmission beam of the reference PRS resource, and determining the position coordinate of the user equipment to be positioned according to at least the position coordinate of the at least one TRP and the absolute departure angle.

The embodiment of the invention also discloses a downlink AoD positioning device, which comprises: a configuration information receiving module, configured to receive configuration information sent by a network side device, where the configuration information includes multiple PRS resources sent by at least one TRP; a measurement module to measure the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of the beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources; and a reporting module, configured to report the measurement result, so that the network side device determines the position coordinate of the current user equipment according to the measurement result.

The embodiment of the invention also discloses a downlink AoD positioning device, which comprises: a configuration module, configured to configure a plurality of PRS resources transmitted by at least one TRP and transmit the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources to obtain a measurement result, where the measurement result includes an absolute separation angle of a position of the user equipment to be positioned from the at least one TRP position, or the measurement result includes an index of a reference PRS resource transmitted by the at least one TRP and a relative separation angle of a transmission beam of the user equipment to be positioned from the reference PRS resource, where the reference PRS resource is determined from the plurality of PRS resources; a measurement result receiving module for receiving the measurement result; and the positioning module is used for determining the position coordinates of the user equipment to be positioned at least according to the measurement result.

The embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to execute the steps of the downlink AoD positioning method.

The embodiment of the invention also discloses user equipment which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps of the downlink AoD positioning method when running the computer program.

The embodiment of the invention also discloses network side equipment, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps of the downlink AoD positioning method when running the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

in the technical scheme of the invention, after the UE measures the PRS resource, the absolute departure angle between the position of the current user equipment and the position of at least one TRP is included in the measurement result reported to the network side, or the measurement result includes the index of the reference PRS resource sent by the at least one TRP and the relative departure angle between the beam departure angles of the transmission beams of the current user equipment and the reference PRS resource, and then the network side equipment completes positioning. Compared with the RSRP reported in the prior art after quantization, the technical scheme of the invention reports the absolute departure angle and the relative departure angle, so that the positioning error can be reduced, and the positioning accuracy is improved; in addition, the absolute departure angle and the relative departure angle in the measurement result are both the departure angle of the current user equipment relative to the TRP, but not the departure angle of the beam with the maximum RSRP, so that the positioning accuracy is further ensured. In addition, by completing the estimation of the departure angle on the user equipment side, the delay of the downlink AoD positioning can be reduced.

Drawings

Fig. 1 is a flowchart of a downlink AoD positioning method according to an embodiment of the present invention;

fig. 2 is a flowchart of another downlink AoD positioning method according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating an exemplary application scenario of the present invention;

FIG. 4 is a diagram illustrating another exemplary application scenario of the present invention;

fig. 5 is a schematic structural diagram of a downlink AoD positioning apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another downlink AoD positioning apparatus according to an embodiment of the present invention.

Detailed Description

As described in the background art, if the UE reports multiple RSRPs and/or PRS resource indexes, the network side can only select the PRS resource with the largest RSRP and map the PRS resource to the downlink AoD. When the AoD corresponding to the UE location is not aligned with the AoD corresponding to the strongest beam, an error occurs in the AoD mapping manner on the network side, thereby causing an error in location estimation.

In the 3GPP Rel-17 NR standardization stage, an enhancement method of downlink AoD positioning is discussed. The method comprises the steps that a network side configures UE (user equipment) to measure a plurality of PRS (radio resource units) resources sent by adopting adjacent beams, and then the UE reports RSRP and/or PRS resource indexes corresponding to the adjacent beams to the network side. And the network side accurately estimates the downlink AoD by utilizing the RSRP and/or PRS resource indexes corresponding to a plurality of adjacent beams reported by the UE, and estimates the position coordinate of the UE by utilizing the downlink AoD. And the second scheme is that the network side configures the UE to measure a plurality of PRS resources sent by adopting adjacent beams, and then the UE sends and reports RSRP and/or PRS resource indexes corresponding to the adjacent beams to the base station. And the base station accurately estimates the downlink AoD by utilizing the RSRP and/or PRS resource indexes corresponding to the plurality of adjacent beams reported by the UE and reports the downlink AoD to the network side. And the network side estimates the position coordinates of the UE by using the downlink AoD.

The inventor of the present application finds that, in the first scheme, downlink AoD estimation is performed on a network side, and the UE reports quantized RSRP, which has a certain error with actual RSRP, thereby causing quantization error and reducing positioning accuracy. In the second scheme, downlink AoD estimation is performed at the base station side, and then the downlink AoD estimation is reported to the network side by the base station, so that the steps of a positioning process are added besides the accuracy problem caused by RSRP quantization errors, and further the positioning time delay is increased.

Compared with the RSRP reported in the prior art after quantization, the technical scheme of the invention reports the absolute departure angle and the relative departure angle, so that the positioning error can be reduced, and the positioning accuracy is improved; in addition, the absolute departure angle and the relative departure angle in the measurement result are both the departure angle of the current user equipment relative to the TRP, but not the departure angle of the beam with the maximum RSRP, so that the positioning accuracy is further ensured. In addition, by completing the estimation of the departure angle on the user equipment side, the time delay of the downlink AoD positioning can be reduced.

The technical scheme of the invention can be applied to 5G (5 Generation) communication systems, 4G and 3G communication systems, and various future new communication systems such as 6G and 7G.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a flowchart of a downlink AoD positioning method according to an embodiment of the present invention.

The downlink AoD positioning method of the embodiment of the invention can be used on the user equipment side, namely, the user equipment can execute each step of the downlink AoD positioning method. . The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.

Specifically, the downlink AoD positioning method may include the following steps:

step S101: receiving configuration information sent by network side equipment, wherein the configuration information comprises a plurality of PRS resources sent by at least one TRP;

step S102: measuring the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources;

step S103: and reporting the measurement result so that the network side equipment determines the position coordinate of the current user equipment according to the measurement result.

It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution sequence of the steps.

In this embodiment, the network side device completes configuration of the configuration information and sends the configuration information to the UE. And after receiving the configuration information, the UE triggers the measurement and reporting processes.

Unlike RSRP, which includes PRS resources in UE measurement results in the prior art, in step S102, the UE determines an absolute departure angle and a relative departure angle in the measurement results after measuring a plurality of PRS resources. The absolute departure angle refers to an angle of the current location of the user equipment with respect to a coordinate axis in a global coordinate system or an antenna array coordinate system centered on the at least one TRP location. The relative departure angle refers to an angle of a beam departure angle of a transmission beam of the reference PRS resource from a current user equipment.

Further, the reference PRS resource is selected from the plurality of PRS resources, i.e., the reference PRS resource is determined from the plurality of PRS resources. The reference PRS resources may be specified by the network side device or determined by the UE. Wherein multiple TRPs may share the same reference PRS resource or each TRP has a corresponding reference PRS resource.

It should be noted that, regarding the specific implementation Of the determination Of the Angle Of Departure (AoD), such as the construction Of the coordinate system and the determination Of the Angle, reference may be made to the prior art, and the embodiment Of the present invention is not limited thereto.

Further, in the specific implementation of step S103, the UE reports the measurement result to the network side device, so that the network side device completes positioning the UE according to the absolute departure angle and the relative departure angle, that is, determines a location coordinate of the UE, such as a longitude and latitude coordinate. The measurement result may be carried in a measurement report and sent to the network side device.

In a specific embodiment, the UE may report an absolute departure angle or a relative departure angle between the UE and one TRP at each reporting, and implement AoD between the UE and a plurality of TRPs through multiple reporting, so as to implement positioning. Accordingly, when configuring the configuration information, the network side device may configure one TRP and a plurality of PRS resources transmitted by the TRP in the configuration information.

In another embodiment, the UE may also carry the absolute departure angle or the relative departure angle between the UE and a plurality of TRPs in the report of one measurement result, so as to achieve positioning. Accordingly, when configuring the configuration information, the network side device may configure a plurality of TRPs and a plurality of PRS resources transmitted by the TRPs in the configuration information.

Compared with the reporting of quantized RSRP in the prior art, the reporting of the embodiment of the invention is the absolute departure angle and the relative departure angle, so that the positioning error can be reduced, and the positioning accuracy is improved; in addition, the absolute departure angle and the relative departure angle in the measurement result are both the departure angle of the current user equipment relative to the TRP, but not the departure angle of the beam with the maximum RSRP, so that the positioning accuracy is further ensured. In addition, by completing the estimation of the departure angle on the user equipment side, the delay of the downlink AoD positioning can be reduced.

In a non-limiting embodiment of the present invention, the configuration information further includes beam information corresponding to the plurality of PRS resources and/or antenna information corresponding to the PRS resources.

In a specific implementation, the beam information may be a beam exit angle, and the antenna information may be an antenna exit angle. In this embodiment, since the UE needs to complete AoD estimation, the network side device configures a beam departure angle or an antenna departure angle to the UE to assist the UE in completing AoD estimation.

In one non-limiting embodiment of the present invention, step S102 shown in fig. 1 may include the following steps: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; and determining the absolute departure angle according to the signal quality corresponding to the PRS resources.

In a specific implementation, the UE may measure multiple PRS resources, specifically, measure multiple PRS resources transmitted by using adjacent beams, and obtain signal qualities corresponding to the multiple PRS resources. For a particular AoD, the signal magnitudes of adjacent beams have a certain ratio relationship. That is, there is a mapping between the ratio of the departure angle to the signal qualities, which may be pre-measured. In a specific implementation, assuming that the TRP transmits 3 beams for downlink AoD positioning, the signal radiation intensity of the ith beam at different angles (angles) can be represented as power _ i (angle), and the relationship between the downlink AoD and the signal radiation intensity ratio of the 3 beams can be represented as angle = f (power _1 (angle)/power _2 (angle)/power _3 (angle)), where angle represents downlink AoD, and f (x) represents the mapping relationship between downlink AoD and the signal radiation intensity.

For example, aoD1 corresponds to signal quality ratios RSRP1/RSRP2/RSRP3=0.95/0.8/0.0001, and if RSRP1, RSRP2, RSRP3 of 3 beams measured by the UE have ratios similar to 0.95/0.8/0.0001, the UE may determine that the absolute exit angle is AoD1.

In this embodiment, the UE reports the absolute departure angle.

It can be understood by those skilled in the art that the Signal quality may be RSRP, or may be Received Signal Strength Indication (RSSI) in any implementable manner, and the embodiment of the present invention is not limited thereto.

In one non-limiting embodiment of the present invention, step S102 shown in fig. 1 may include the following steps: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; and determining the reference PRS resource, and determining an included angle of a beam departure angle of a transmission beam relative to the reference PRS resource as the relative departure angle according to the signal quality corresponding to the plurality of PRS resources.

Different from the foregoing embodiment in which the UE determines the absolute departure angle, in the embodiment of the present invention, the UE determines the included angle relative to the beam departure angle of the transmission beam of the reference PRS resource.

In a specific implementation, the UE may first determine an absolute departure angle according to the measured signal quality corresponding to the plurality of PRS resources, and then calculate an angle difference between the absolute departure angle and a beam departure angle of a transmission beam of the reference PRS resource, so as to obtain the relative departure angle.

In this embodiment, the UE reports the index of the reference PRS resource and the relative departure angle.

In one non-limiting embodiment of the present invention, the UE may determine the reference PRS resource in one or more of the following manners: determining the reference PRS resources according to the signal quality corresponding to the plurality of PRS resources; or, determining the reference PRS resource according to the configuration information.

Further, the reference PRS resources include one or more of: a PRS resource with a smallest included angle between a beam exit angle of a transmission beam and the absolute exit angle, a PRS resource with a best signal quality, and a reference PRS resource indicated by the configuration information.

In a specific implementation, the UE may determine, as a reference PRS resource, a PRS resource having a smallest included angle between a beam departure angle of a transmission beam and the absolute departure angle; the UE may also determine a PRS resource with the best signal quality, for example, a PRS resource with the largest RSRP is a reference PRS resource.

The UE may also determine a reference PRS resource indicated by the configuration information as the reference PRS resource. Accordingly, the network side device needs to configure the reference PRS resource in the configuration information for the UE. For example, the base station indicates an index of the reference PRS resource in the configuration information.

Fig. 2 shows another downlink AoD positioning method. The downlink AoD positioning method may be used for a network side device, such as a base station or a core network, that is, the network side device executes each step of the downlink AoD positioning method shown in fig. 2.

Specifically, the downlink AoD positioning method may include the following steps:

step S201: configuring a plurality of PRS resources transmitted by at least one TRP and transmitting the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources, and obtaining a measurement result, wherein the measurement result comprises an absolute separation angle of a position of the user equipment to be positioned and the position of the at least one TRP, or the measurement result comprises an index of a reference PRS resource transmitted by the at least one TRP and a relative separation angle of the transmission separation angle of a transmission beam of the user equipment to be positioned and the reference PRS resource, and the reference PRS resource is determined from the plurality of PRS resources;

step S202: receiving the measurement result;

step S203: and determining the position coordinates of the user equipment to be positioned at least according to the measurement result.

Compared with the prior art in which the network side equipment completes the estimation and positioning of the AoD of the UE, the network side equipment in the embodiment of the invention only needs to receive the absolute departure angle or the relative departure angle reported by the UE and completes the positioning of the user equipment to be positioned.

As described above, the UE may report the absolute departure angle or the relative departure angle between the UE and one TRP at each reporting, or may carry the absolute departure angle or the relative departure angle between the UE and a plurality of TRPs in one reporting of the measurement result. Therefore, the network side equipment can determine the position coordinate of the UE according to the measurement result reported by the UE for many times or the measurement result reported once.

In a specific embodiment of step S203, the network side device determines the location coordinate of the user equipment to be located according to at least the location coordinate of the at least one TRP and the absolute departure angle.

In this embodiment, the measurement result includes an absolute separation angle. And calculating the position coordinate of the user equipment to be positioned by utilizing the position coordinate of the TRP, the absolute departure angle and the trigonometric function.

For example, the position coordinates of the TRP1 are { x1, y1}, the position coordinates of the TRP2 are { x2, y2}, and the position coordinates of the UE are { x, y }. After determining that the downlink AoD of the UE with respect to the TRP1 is AoD1 and the downlink AoD of the UE with respect to the TRP2 is AoD2, the following can be expressed:

tan(AoD1)＝(y-y1)/(x-x1)；

tan(AoD2)＝(y-y2)/(x-x1)。

and solving the equation set to obtain the position coordinates { x, y } of the UE.

In another specific embodiment of step S203, the network side device determines the absolute departure angle according to the beam departure angle and the relative departure angle of the transmission beam of the reference PRS resource, and determines the position coordinate of the user equipment to be positioned according to at least the position coordinate of the at least one TRP and the absolute departure angle.

In this embodiment, the measurement result includes a relative angle of departure. The UE first calculates a difference between a beam exit angle of a transmission beam of the reference PRS resource and the relative exit angle to determine the absolute exit angle. And then the position coordinates of the user equipment to be positioned can be calculated by utilizing the position coordinates, the absolute departure angle and the trigonometric function of the TRP.

For a specific implementation of calculating the position coordinates of the user equipment to be positioned by using the absolute departure angle, please refer to the foregoing embodiment, which is not described herein again.

Fig. 3 shows an interaction process between a UE and a network side device, and the downlink AoD positioning method shown in fig. 3 may include the following steps:

step S301: the network side device 302 determines the configuration information.

Step S302: the network side device 302 sends configuration information to the UE301.

Step S303: UE301 measures multiple PRS resources to obtain measurement results.

Step S304: UE301 reports the measurement result to network side device 302.

Step S305: the network side device 302 determines the location coordinates of the UE at least according to the measurement result.

In step S303, the UE301 may determine an absolute departure angle of the location of the UE301 from at least one TRP location, or determine an index of at least one TRP transmitted reference PRS resource and a relative departure angle of the UE301 from a transmission departure angle of a transmission beam of the reference PRS resource.

At this point, the network side device 302 completes positioning of the UE301.

In a specific application scenario of the present invention, referring to fig. 4, a network side device configures two TRPs for a UE: TRP1 and TRP2. The TRP1 and TRP2 transmit PRS resources using three beams, respectively.

The UE measures a plurality of PRS resources sent by the TRP1 and the TRP2 respectively, and obtains an absolute departure angle AoD1 of the UE relative to the TRP1 and an absolute departure angle AoD2 of the UE relative to the TRP2. And the UE reports the absolute departure angle AoD1 and the absolute departure angle AoD2 to the network side equipment.

In a specific implementation, the UE may report the absolute departure angle AoD1 in the first reporting, and report the absolute departure angle AoD2 in the second reporting. Alternatively, the UE reports the absolute departure angle AoD1 and the absolute departure angle AoD2 at the same time.

Referring to fig. 5, fig. 5 shows a downstream AoD positioning apparatus 50. The downlink AoD positioning device 50 may include:

a configuration information receiving module 501, configured to receive configuration information sent by a network side device, where the configuration information includes multiple PRS resources sent by at least one TRP;

a measurement module 502, configured to measure the plurality of PRS resources to obtain a measurement result, where the measurement result includes an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result includes an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, and the reference PRS resource is determined from the plurality of PRS resources;

a reporting module 503, configured to report the measurement result, so that the network side device determines the position coordinate of the current ue according to the measurement result.

In a specific implementation, the downlink AoD positioning device 50 may correspond to a Chip having a downlink AoD positioning function in the user equipment, such as a System-On-a-Chip (SOC), a baseband Chip, and the like; or the user equipment comprises a chip module with a downlink AoD positioning function; or to a chip module having a downstream AoD positioning function chip, or to a user equipment.

Referring to fig. 6, fig. 6 shows a downlink AoD positioning device 60. The downstream AoD positioning device 60 may include:

a configuring module 601, configured to configure a plurality of PRS resources transmitted by at least one TRP and transmit the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources to obtain a measurement result, where the measurement result includes an absolute departure angle of a position of the user equipment to be positioned from the at least one TRP position, or the measurement result includes an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a transmission beam of the user equipment to be positioned from the reference PRS resource, where the reference PRS resource is determined from the plurality of PRS resources;

a measurement result receiving module 602, configured to receive the measurement result;

a positioning module 603, configured to determine, according to at least the measurement result, a position coordinate of the user equipment to be positioned.

In a specific implementation, the downlink AoD positioning device 60 may correspond to a Chip having a downlink AoD positioning function in a network device, such as a System-On-a-Chip (SOC), a baseband Chip, or the like; or the network equipment comprises a chip module with a downlink AoD positioning function; or to a chip module having a downstream AoD positioning function chip, or to a network device.

For more details of the working principle and the working manner of the downstream AoD positioning device 50 and the downstream AoD positioning device 60, reference may be made to the relevant description in fig. 1 to fig. 3, and details are not repeated here.

Each module/unit included in each apparatus and product described in the above embodiments may be a software module/unit, or may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit. For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.

The embodiment of the invention also discloses a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program can execute the steps of the downlink AoD positioning method when running. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.

The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with a computer program which can run on the processor. The processor, when running the computer program, may perform the steps of the downlink AoD positioning method shown in fig. 1. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.

The embodiment of the invention also discloses network side equipment which can comprise a memory and a processor, wherein the memory is stored with a computer program which can run on the processor. The processor, when running the computer program, may perform the steps of the downlink AoD positioning method shown in fig. 2.

The technical solution of the present invention is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-electrical (communication from Vehicle to any object) architecture, and the like.

In this embodiment of the present application, the Core Network may be an evolved packet Core (EPC for short), a 5G Core Network (5G Core Network), or may be a novel Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, user Plane Functions (UPF) providing functions such as packet routing and forwarding and QoS (Quality of Service) Management, session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (NodeB), the device providing the base station function in the 4G network includes an Evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing the base station function is an Access Point (AP), the device providing the base station function in the 5G New Radio (New Radio, NR) is a gNB (ng-eNB), where the gNB and the terminal communicate with each other by using an NR technology, the ng-eNB and the terminal communicate with each other by using an E-a (Evolved Universal Radio Access) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The base station in the embodiment of the present application also includes a device and the like that provide a function of the base station in a future new communication system.

The base station controller in the embodiment of the present application is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, or a device for controlling and managing a base station in a future new communication system.

The network on the network side in the embodiment of the present invention refers to a communication network providing communication services for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side.

A terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal equipment), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

In the embodiment of the application, a unidirectional communication link from an access network to a terminal is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

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 "/" in this document indicates that the former and latter related objects are in an "or" relationship.

The "plurality" appearing in the embodiments of the present application means two or more.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.

It should be understood that, in the embodiment of the present application, the processor 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.

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 wholly or partially generated 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 or wirelessly. 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.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative; for example, the division of the unit is only a logic function division, and there may be another division manner in actual implementation; for example, various elements or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. 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 invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (13)

1. A downlink AoD positioning method is characterized by comprising the following steps:

receiving configuration information sent by a network side device, wherein the configuration information comprises a plurality of PRS resources sent by at least one TRP;

measuring the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of a beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources;

and reporting the measurement result so that the network side equipment determines the position coordinate of the current user equipment according to the measurement result.

2. The downlink AoD positioning method according to claim 1, wherein the configuration information further includes beam information corresponding to the plurality of PRS resources and/or antenna information corresponding to the PRS resources.

3. The downlink AoD positioning method according to claim 1, wherein the measuring the plurality of PRS resources comprises:

measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources;

and determining the absolute departure angle according to the signal quality corresponding to the plurality of PRS resources.

4. The downlink AoD positioning method of claim 1, wherein the configuration information includes a beam departure angle of a transmission beam of the plurality of PRS resources, and wherein the measuring the plurality of PRS resources comprises:

measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources;

and determining the reference PRS resource, and determining an included angle of a beam departure angle of a transmission beam relative to the reference PRS resource as the relative departure angle according to the signal quality corresponding to the plurality of PRS resources.

5. The downlink AoD positioning method according to claim 1, wherein the reference PRS resources are determined in one or more of the following manners:

determining the reference PRS resources according to the signal quality corresponding to the plurality of PRS resources;

or, determining the reference PRS resource according to the configuration information.

6. The downlink AoD positioning method according to claim 1, wherein the reference PRS resources include one or more of: a PRS resource with a smallest included angle between a beam exit angle of a transmission beam and the absolute exit angle, a PRS resource with a best signal quality, and a reference PRS resource indicated by the configuration information.

7. A downlink AoD positioning method is characterized by comprising the following steps:

configuring a plurality of PRS resources transmitted by at least one TRP and transmitting the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources, and obtaining a measurement result, wherein the measurement result comprises an absolute separation angle of a position of the user equipment to be positioned and the position of the at least one TRP, or the measurement result comprises an index of a reference PRS resource transmitted by the at least one TRP and a relative separation angle of the transmission separation angle of a transmission beam of the user equipment to be positioned and the reference PRS resource, and the reference PRS resource is determined from the plurality of PRS resources;

receiving the measurement result;

and determining the position coordinates of the user equipment to be positioned at least according to the measurement result.

8. The downlink AoD positioning method according to claim 7, wherein at least the determining the position coordinates of the user equipment to be positioned according to the measurement result includes:

determining the position coordinate of the user equipment to be positioned according to at least the position coordinate of the at least one TRP and the absolute departure angle;

or, determining the absolute departure angle according to the beam departure angle and the relative departure angle of the transmission beam of the reference PRS resource, and determining the position coordinate of the user equipment to be positioned according to at least the position coordinate of the at least one TRP and the absolute departure angle.

9. A downlink AoD positioning device, comprising:

a configuration information receiving module, configured to receive configuration information sent by a network side device, where the configuration information includes multiple PRS resources sent by at least one TRP;

a measurement module to measure the plurality of PRS resources to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of a current user equipment from the at least one TRP position, or the measurement result comprising an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle of the beam departure angle of a transmission beam of the current user equipment from the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources;

and a reporting module, configured to report the measurement result, so that the network side device determines the position coordinate of the current user equipment according to the measurement result.

10. A downlink AoD positioning device, comprising:

a configuration module, configured to configure a plurality of PRS resources for at least one TRP transmission and transmit the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources to obtain a measurement result, where the measurement result includes an absolute separation angle of a position of the user equipment to be positioned from the at least one TRP position, or the measurement result includes an index of a reference PRS resource for the at least one TRP transmission and a relative separation angle of the user equipment to be positioned from a transmission separation angle of a transmission beam of the reference PRS resource, where the reference PRS resource is determined from the plurality of PRS resources;

a measurement result receiving module for receiving the measurement result;

and the positioning module is used for determining the position coordinates of the user equipment to be positioned at least according to the measurement result.

11. A computer-readable storage medium, having a computer program stored thereon, which, when being executed by a processor, performs the steps of the downlink AoD positioning method according to any one of claims 1 to 8.

12. User equipment comprising a memory and a processor, the memory having stored thereon a computer program being executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the downlink AoD positioning method according to any one of claims 1 to 6.

13. A network side device comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor executes the computer program to perform the steps of the downlink AoD positioning method according to claim 7 or 8.

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