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

Abstract

The application discloses a downlink AoD positioning method and device, user equipment and network side equipment. The downlink AoD positioning method comprises the following steps: receiving configuration information sent by a network side equipment, 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, wherein the measurement result comprises an absolute departure angle of a current user equipment position and at least one TRP position, or the measurement result comprises an index of a reference PRS resource sent by the at least one TRP and a relative departure angle of a beam departure angle of the current user equipment and a transmission beam of the reference PRS resource, wherein the reference PRS resource is determined from the plurality of PRS resources; and reporting the measurement result, so that the network side equipment determines position coordinates of the current user equipment according to the measurement result. The application can improve the positioning accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a downlink AoD positioning method and device, user equipment and network side equipment. BACKGROUND

[0002] 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, etc. Among them, the downlink AoD positioning method measures and feeds back the downlink AoD information of multiple Transmission Receive Points (TRPs) to the target User Equipment (UE) by the target UE, and the position coordinates of the TRPs can be used to uniquely determine the position of the target UE.

[0003] In a New Radio (NR) system, the network side configures at least one Positioning Reference Signal (PRS) resource transmitted by a TRP for the target UE, each PRS resource is transmitted in a beamforming manner, and each PRS resource corresponds to a downlink AoD; the target UE measures the PRS resource and reports the PRS resource index and the Reference Signal Receiving Power (RSRP) value of the PRS resource with the maximum RSRP to the network side; the network side maps the reported PRS resource index to obtain the downlink AoD between each TRP and the target UE, and estimates the UE position coordinates using the downlink AoD.

[0004] However, if the UE reports multiple RSRP and / or PRS resource indexes, the network side can only select the PRS resource with the maximum RSRP and map it to the downlink AoD. When the AoD corresponding to the UE position is not aligned with the AoD corresponding to the strongest beam, the AoD mapping method of the network side will have an error, resulting in an error in the position estimation. SUMMARY

[0005] The technical problem solved by the present application is how to improve the positioning accuracy.

[0006] To solve the above technical problems, the embodiment of the present application provides a downlink AoD positioning method, the downlink AoD positioning method comprising: receiving configuration information sent by a network side device, the configuration information comprising 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 angle of departure of a current user equipment position and a position of the at least one TRP, or the measurement result comprising an index of a reference PRS resource sent by the at least one TRP and a relative angle of departure of a beam of the current user equipment and a transmission beam of 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 device determines a position coordinate of the current user equipment according to the measurement result.

[0007] Optionally, the configuration information further comprises beam information corresponding to the plurality of PRS resources and / or antenna information corresponding to the PRS resources.

[0008] Optionally, the measuring the plurality of PRS resources comprises: measuring the plurality of PRS resources to obtain signal quality corresponding to the plurality of PRS resources; and determining the absolute angle of departure according to the signal quality corresponding to the plurality of PRS resources.

[0009] Optionally, the configuration information comprises a beam angle of departure of a transmission beam of the plurality of PRS resources, and the measuring the plurality of PRS resources comprises: measuring the plurality of PRS resources to obtain signal quality corresponding to the plurality of PRS resources; and determining the reference PRS resource, and determining an included angle of a beam angle of departure of a transmission beam of the reference PRS resource as the relative angle of departure according to the signal quality corresponding to the plurality of PRS resources.

[0010] Optionally, the reference PRS resource is determined in one or more of the following ways: the reference PRS resource is determined according to the signal quality corresponding to the plurality of PRS resources; or the reference PRS resource is determined according to the configuration information.

[0011] Optionally, the reference PRS resource comprises one or more of the following: a PRS resource with a minimum included angle between a beam angle of departure of a transmission beam and the absolute angle of departure, a PRS resource with the best signal quality, and a reference PRS resource indicated by the configuration information.

[0012] To solve the above technical problems, the embodiment of the present application further discloses a downlink AoD positioning method, the downlink AoD positioning method comprising: 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 to obtain a measurement result, the measurement result comprising an absolute departure angle of a position of the user equipment to be positioned and a position of the at least one TRP, 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 transmission departure angle of a transmission beam of the reference PRS resource and the user equipment to be positioned, the reference PRS resource being determined from the plurality of PRS resources; receiving the measurement result; and determining position coordinates of the user equipment to be positioned according to at least the measurement result.

[0013] Optionally, the determining of the position coordinates of the user equipment to be positioned according to at least the measurement result comprises: determining the position coordinates of the user equipment to be positioned according to at least the position coordinates of the at least one TRP and the absolute departure angle; or determining the absolute departure angle according to the beam departure angle of the transmission beam of the reference PRS resource and the relative departure angle, and determining the position coordinates of the user equipment to be positioned according to at least the position coordinates of the at least one TRP and the absolute departure angle.

[0014] The embodiment of the present application further discloses a downlink AoD positioning device, the downlink AoD positioning device comprising: a configuration information receiving module configured to receive configuration information transmitted by a network side device, the configuration information comprising a plurality of PRS resources transmitted by at least one TRP; a measurement module configured 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 and a position of the at least one TRP, 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 reference PRS resource and the current user equipment, 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 position coordinates of the current user equipment according to the measurement result.

[0015] The embodiment of the present application 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, wherein the measurement result comprises an absolute departure angle of a position of the user equipment to be positioned and a 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 departure angle of a transmission departure angle of the user equipment to be positioned and a transmission beam of the reference PRS resource, wherein the reference PRS resource is determined from the plurality of PRS resources; a measurement result receiving module, configured to receive the measurement result; and a positioning module, configured to determine a position coordinate of the user equipment to be positioned according to at least the measurement result.

[0016] The embodiment of the present application also discloses a computer readable storage medium, which stores a computer program, wherein the computer program is run by a processor to perform the steps of the downlink AoD positioning method.

[0017] The embodiment of the present application also discloses a user equipment, which comprises a memory and a processor, wherein the memory stores a computer program capable of being run on the processor, and the processor runs the computer program to perform the steps of the downlink AoD positioning method.

[0018] The embodiment of the present application also discloses a network side device, which comprises a memory and a processor, wherein the memory stores a computer program capable of being run on the processor, and the processor runs the computer program to perform the steps of the downlink AoD positioning method.

[0019] Compared with the prior art, the technical scheme of the embodiment of the present application has the following beneficial effects:

[0020] In the technical scheme of the present application, after the UE measures the PRS resource, the measurement result reported to the network side comprises an absolute departure angle of a position of the current user equipment and a 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 departure angle of a beam departure angle of the current user equipment and a transmission beam of the reference PRS resource, and then the network side device completes positioning. Compared with the quantized RSRP reported in the prior art, the absolute departure angle and the relative departure angle reported in the technical scheme of the present application can reduce the positioning error and improve the positioning accuracy; and the absolute departure angle and the relative departure angle in the measurement result are both the departure angles of the current user equipment relative to the TRP, rather than the departure angle of the beam with the maximum RSRP, which further guarantees the positioning accuracy. 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. Attached Figure Description

[0021] Figure 1 This is a flowchart of a downlink AoD positioning method according to an embodiment of the present invention;

[0022] Figure 2 This is a flowchart of another downlink AoD positioning method according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a specific application scenario of an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of another specific application scenario of an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a downlink AoD positioning device according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of another downlink AoD positioning device according to an embodiment of the present invention. Detailed Implementation

[0027] As described in the background section, if a UE reports multiple RSRP and / or PRS resource indices, the network side can only select the PRS resource with the largest RSRP and map it as a downlink AoD. When the AoD corresponding to the UE's location is not aligned with the AoD corresponding to the strongest beam, the AoD mapping method on the network side will have an error, resulting in an error in location estimation.

[0028] In the 3GPP Rel-17 NR standardization phase, enhanced methods for downlink AoD positioning were discussed. Scheme 1 involves the network side configuring the UE to measure multiple PRS resources transmitted using adjacent beams. The UE then reports the RSRP and / or PRS resource indices corresponding to these adjacent beams to the network side. The network side uses the reported RSRP and / or PRS resource indices to accurately estimate the downlink AoD and uses it to estimate the UE's location coordinates. Scheme 2 involves the network side configuring the UE to measure multiple PRS resources transmitted using adjacent beams. The UE then reports the reported RSRP and / or PRS resource indices corresponding to these adjacent beams to the base station. The base station uses the reported RSRP and / or PRS resource indices to accurately estimate the downlink AoD and reports it to the network side. The network side uses the downlink AoD to estimate the UE's location coordinates.

[0029] The present application inventors have found that, in scheme one, the downlink AoD estimation is performed at the network side, and the UE reports the quantized RSRP, and the quantized RSRP has a certain error with the actual RSRP, thereby causing quantization error and reducing the positioning accuracy. In scheme two, the downlink AoD estimation is performed at the base station side, and then reported to the network side by the base station. In addition to the accuracy problem caused by the RSRP quantization error, the positioning process is also increased, thereby increasing the positioning delay.

[0030] Compared with the existing technology of reporting the quantized RSRP, the present application reports the absolute departure angle and the relative departure angle, which can reduce the positioning error and improve the positioning accuracy. Moreover, the absolute departure angle and the relative departure angle in the measurement result are the departure angles of the current user equipment relative to the TRP, rather than the departure angles of the beam with the maximum RSRP, which further ensures the accuracy of the positioning. In addition, by completing the estimation of the departure angle at the user equipment side, the downlink AoD positioning delay can be reduced.

[0031] The present application technical solution can be applied to the 5G (5th Generation) communication system, and can also be applied to the 4G and 3G communication systems, and can also be applied to future new communication systems, such as 6G, 7G, etc.

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0033] Figure 1 is a flowchart of a downlink AoD positioning method according to an embodiment of the present application.

[0034] The downlink AoD positioning method according to an embodiment of the present application can be used at the user equipment side, that is, each step of the downlink AoD positioning method can be performed by the user equipment. The user equipment includes but is not limited to a terminal device such as a mobile phone, a computer, a tablet computer, etc.

[0035] Specifically, the downlink AoD positioning method can include the following steps:

[0036] Step S101: receiving configuration information sent by a network side device, the configuration information including a plurality of PRS resources sent by at least one TRP;

[0037] Step S102: measuring the plurality of PRS resources to obtain a measurement result, the measurement result including an absolute departure angle of a current user equipment position and a position of the at least one TRP, or the measurement result including an index of a reference PRS resource sent 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 and the reference PRS resource, the reference PRS resource being determined from the plurality of PRS resources.

[0038] Step S103: reporting the measurement result, so that the network side device determines the position coordinate of the current user equipment according to the measurement result.

[0039] It should be noted that the serial numbers of the steps in the embodiment do not represent the limitation of the execution order of the steps.

[0040] In the embodiment, the network side device completes the configuration of the configuration information and sends it to the UE. After receiving the configuration information, the UE triggers the measurement and reporting process.

[0041] Different from the RSRP of the PRS resource in the measurement result of the UE in the prior art, in step S102, the UE determines the absolute angle of departure and the relative angle of departure in the measurement result after measuring the plurality of PRS resources. The absolute angle of departure refers to the angle of the position of the current user equipment relative to the coordinate axis in the global coordinate system or the antenna array coordinate system with the position of the at least one TRP as the center. The relative angle of departure refers to the angle of the beam angle of departure of the transmission beam of the current user equipment and the reference PRS resource.

[0042] Further, the reference PRS resource is selected from the plurality of PRS resources, that is, the reference PRS resource is determined from the plurality of PRS resources. The reference PRS resource can be specified by the network side device or determined by the UE. The plurality of TRPs can share the same reference PRS resource, or each TRP has a corresponding reference PRS resource.

[0043] It should be noted that the determination of the angle of departure (Angle Of Departure, AoD), such as the construction of the coordinate system and the determination of the angle, can refer to the prior art, and the embodiment of the application does not limit this.

[0044] 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 the positioning of the UE according to the absolute angle of departure and the relative angle of departure, that is, determines the position coordinate of the UE, such as the latitude and longitude coordinate. The measurement result can be carried in the measurement report and sent to the network side device.

[0045] In one specific embodiment, the UE can report the absolute angle of departure or the relative angle of departure of the UE and one TRP each time, realize the AoD of the UE and the plurality of TRPs through multiple reporting, and realize positioning. Correspondingly, when the network side device configures the configuration information, the network side device can configure one TRP and the plurality of PRS resources transmitted by the TRP in the configuration information.

[0046] In another specific embodiment, the UE can also carry the absolute angle of departure or the relative angle of departure of the UE from the multiple TRPs in the reporting of one measurement result to realize positioning. Accordingly, the network-side device can configure the multiple TRPs and the multiple PRS resources transmitted by the multiple TRPs in the configuration information when configuring the configuration information.

[0047] Compared with the reporting of the quantized RSRP in the prior art, the absolute angle of departure and the relative angle of departure reported in the embodiment of the present application can reduce the positioning error and improve the positioning accuracy. Moreover, the absolute angle of departure and the relative angle of departure in the measurement result are the angles of departure of the current user equipment relative to the TRPs, rather than the angles of departure of the beams with the maximum RSRP, which further ensures the accuracy of positioning. In addition, the estimation of the angle of departure is completed at the user equipment side, which can reduce the time delay of the downlink AoD positioning.

[0048] In one non-limiting embodiment of the present application, the configuration information further comprises beam information corresponding to the multiple PRS resources and / or antenna information corresponding to the PRS resources.

[0049] In specific implementation, the beam information can be a beam angle of departure, and the antenna information can be an antenna angle of departure. In this embodiment, since the estimation of the AoD needs to be completed by the UE, the network-side device configures the beam angle of departure or the antenna angle of departure to the UE to assist the UE to complete the estimation of the AoD.

[0050] In one non-limiting embodiment of the present application, Figure 1 The step S102 can include the following steps: measuring the multiple PRS resources to obtain the signal quality corresponding to the multiple PRS resources; and determining the absolute angle of departure according to the signal quality corresponding to the multiple PRS resources.

[0051] In specific implementation, the UE can measure the multiple PRS resources, specifically, can measure the multiple PRS resources transmitted by the adjacent beams to obtain the signal quality corresponding to the multiple PRS resources. For a specific AoD, the signal sizes of the adjacent beams have a certain ratio relationship. That is, there is a mapping relationship between the angle of departure and the ratio of the multiple signal qualities, which can be pre-measured. In specific implementation, assuming that the TRP transmits 3 beams for downlink AoD positioning, the signal radiation intensity of the i-th beam at different 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)), wherein angel represents the downlink AoD, and f(x) represents the mapping relationship between the downlink AoD and the signal radiation intensity.

[0052] For example, the ratio of the signal quality corresponding to the AoD1 is RSRP1 / RSRP2 / RSRP3=0.95 / 0.8 / 0.0001, and if the UE measures the RSRP1, RSRP2 and RSRP3 of the three beams to have a ratio close to 0.95 / 0.8 / 0.0001, the UE can determine that the absolute angle of departure is AoD1.

[0053] In this embodiment, the UE reports the absolute angle of departure.

[0054] Those skilled in the art can understand that the signal quality can be RSRP, received signal strength indication (RSSI) or any other implementable manner, and the embodiments of the present application do not limit this.

[0055] In one non-limiting embodiment of the present application, Figure 1 The step S102 can include the following steps: measuring the plurality of PRS resources to obtain the signal quality corresponding to the plurality of PRS resources; determining the reference PRS resource, and determining the included angle of the beam departure angle of the transmission beam relative to the reference PRS resource as the relative angle of departure according to the signal quality corresponding to the plurality of PRS resources.

[0056] Unlike the UE determining the absolute angle of departure in the foregoing embodiments, the UE in the embodiments of the present application determines the included angle of the beam departure angle of the transmission beam relative to the reference PRS resource.

[0057] In specific implementation, the UE can first determine the absolute angle of departure according to the measured signal quality corresponding to the plurality of PRS resources, and then calculate the angle difference between the absolute angle of departure and the beam departure angle of the transmission beam of the reference PRS resource, thereby obtaining the relative angle of departure.

[0058] In this embodiment, the UE reports the index of the reference PRS resource and the relative angle of departure.

[0059] In one non-limiting embodiment of the present application, the UE can determine the reference PRS resource in one or more of the following ways: determining the reference PRS resource according to the signal quality corresponding to the plurality of PRS resources; or determining the reference PRS resource according to the configuration information.

[0060] Further, the reference PRS resource includes one or more of the following: the PRS resource with the smallest included angle between the beam departure angle of the transmission beam and the absolute angle of departure, the PRS resource with the best signal quality, and the reference PRS resource indicated by the configuration information.

[0061] In a specific implementation, the UE can determine the PRS resource with the smallest included angle between the beam departure angle of the transmission beam and the absolute departure angle as the reference PRS resource; the UE can also determine the PRS resource with the best signal quality, for example, the PRS resource with the largest RSRP, as the reference PRS resource.

[0062] The UE can also determine the 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 for the UE in the configuration information. For example, the base station indicates the index of the reference PRS resource in the configuration information.

[0063] Figure 2 Another downlink AoD positioning method is shown. The downlink AoD positioning method can be used for a network-side device, such as a base station or a core network, i.e., performed by a network-side device Figure 2 Each step of the downlink AoD positioning method is shown.

[0064] Specifically, the downlink AoD positioning method can include the following steps:

[0065] Step S201: configuring a plurality of PRS resources transmitted by at least one TRP and transmitting the plurality of PRS resources to enable a user equipment to be positioned to measure the plurality of PRS resources to obtain measurement results, the measurement results including an absolute departure angle between a position of the user equipment to be positioned and a position of the at least one TRP, or the measurement results including an index of a reference PRS resource transmitted by the at least one TRP and a relative departure angle between a transmission departure angle of a transmission beam of the reference PRS resource and the user equipment to be positioned, the reference PRS resource being determined from the plurality of PRS resources;

[0066] Step S202: receiving the measurement results;

[0067] Step S203: determining position coordinates of the user equipment to be positioned according to at least the measurement results.

[0068] Compared with the prior art in which the network-side device completes the estimation and positioning of the AoD of the UE, in the embodiments of the present application, the network-side device only needs to receive the absolute departure angle or the relative departure angle reported by the UE and complete the positioning of the user equipment to be positioned.

[0069] As described above, the UE can report the absolute departure angle or the relative departure angle between the UE and one TRP each time, or can carry the absolute departure angle or the relative departure angle between the UE and multiple TRPs in one report of measurement results. Thus, the network-side device can determine the position coordinates of the UE according to the measurement results reported by the UE multiple times or the measurement results reported by the UE once.

[0070] In one specific embodiment of step S203, the network-side device determines the position coordinates of the user equipment to be positioned according to at least the position coordinates of the at least one TRP and the absolute angle of departure.

[0071] In this embodiment, the measurement result contains the absolute angle of departure. The position coordinates of the user equipment to be positioned can be calculated by using the position coordinates of the TRP, the absolute angle of departure and trigonometric functions.

[0072] For example, the position coordinates of TRP1 are {x1, y1}, the position coordinates of TRP2 are {x2, y2}, and the position coordinates of the UE are {x, y}. After determining the downlink AoD of the UE relative to TRP1 as AoD1 and the downlink AoD of the UE relative to TRP2 as AoD2, the following can be represented:

[0073] tan(AoD1) = (y - y1) / (x - x1);

[0074] tan(AoD2) = (y - y2) / (x - x1).

[0075] By solving the equation set, the position coordinates {x, y} of the UE can be obtained.

[0076] In another specific embodiment of step S203, the network-side device determines the absolute angle of departure according to the beam angle of departure of the transmission beam of the reference PRS resource and the relative angle of departure, and determines the position coordinates of the user equipment to be positioned according to at least the position coordinates of the at least one TRP and the absolute angle of departure.

[0077] In this embodiment, the measurement result contains the relative angle of departure. The UE first calculates the difference between the beam angle of departure of the transmission beam of the reference PRS resource and the relative angle of departure to determine the absolute angle of departure. Then, the position coordinates of the user equipment to be positioned can be calculated by using the position coordinates of the TRP, the absolute angle of departure and trigonometric functions.

[0078] For the specific implementation of calculating the position coordinates of the user equipment to be positioned by using the absolute angle of departure, please refer to the foregoing embodiments, which will not be described here.

[0079] Figure 3 The interaction process between the UE and the network-side device is shown, Figure 3 The downlink AoD positioning method shown can include the following steps:

[0080] Step S301: The network-side device 302 determines configuration information.

[0081] Step S302: The network-side device 302 sends the configuration information to the UE 301.

[0082] Step S303: The UE 301 measures multiple PRS resources to obtain measurement results.

[0083] Step S304: The UE 301 reports the measurement results to the network-side device 302.

[0084] Step S305: The network-side device 302 determines the position coordinates of the UE according to at least the measurement results.

[0085] In step S303, the UE 301 can determine the absolute angle of departure of the position of the UE 301 from at least one TRP position, or determine the index of the reference PRS resource transmitted by at least one TRP and the relative angle of departure of the transmission beam of the UE 301 from the transmission beam of the reference PRS resource.

[0086] Up to now, the network-side device 302 completes the positioning of the UE 301.

[0087] In one specific application scenario of the present application, please refer to Figure 4 , the network-side device configures two TRPs, TRP1 and TRP2, for the UE. The TRP1 and the TRP2 respectively transmit PRS resources using three beams.

[0088] The UE measures multiple PRS resources transmitted by the TRP1 and the TRP2 respectively, and obtains the absolute angle of departure AoD1 of the UE relative to the TRP1 and the absolute angle of departure AoD2 of the UE relative to the TRP2. The UE reports the absolute angle of departure AoD1 and the absolute angle of departure AoD2 to the network-side device.

[0089] In a specific implementation, the UE can report the absolute angle of departure AoD1 in the first reporting and report the absolute angle of departure AoD2 in the second reporting. Alternatively, the UE can report the absolute angle of departure AoD1 and the absolute angle of departure AoD2 at the same time.

[0090] Please refer to Figure 5 , Figure 5 An apparatus 50 for downlink AoD positioning is shown. The apparatus 50 for downlink AoD positioning can comprise:

[0091] A configuration information receiving module 501 configured to receive configuration information transmitted by a network-side device, the configuration information comprising multiple PRS resources transmitted by at least one TRP;

[0092] The measurement module 502 is configured to measure the plurality of PRS resources to obtain measurement results, wherein the measurement results comprise absolute angles of departure of a current user equipment from positions of the at least one TRP, or the measurement results comprise indexes of reference PRS resources sent by the at least one TRP and relative angles of departure of the current user equipment from transmission beams of the reference PRS resources, the reference PRS resources being determined from the plurality of PRS resources;

[0093] The reporting module 503 is configured to report the measurement results, so that the network side device determines position coordinates of the current user equipment according to the measurement results.

[0094] In specific implementations, the above-mentioned downlink AoD positioning apparatus 50 can correspond to a chip with a downlink AoD positioning function in a user equipment, such as a SOC (System-On-a-Chip), a baseband chip, etc.; or correspond to a chip module including a chip with a downlink AoD positioning function in a user equipment; or correspond to a chip module with a downlink AoD positioning function chip, or correspond to a user equipment.

[0095] Please refer to Figure 6 , Figure 6 A downlink AoD positioning apparatus 60 is shown. The downlink AoD positioning apparatus 60 can include:

[0096] The configuration module 601 is configured to configure a plurality of PRS resources sent by at least one TRP and send the plurality of PRS resources, so that a user equipment to be positioned measures the plurality of PRS resources to obtain measurement results, wherein the measurement results comprise absolute angles of departure of the user equipment to be positioned from positions of the at least one TRP, or the measurement results comprise indexes of reference PRS resources sent by the at least one TRP and relative angles of departure of the user equipment to be positioned from transmission beams of the reference PRS resources, the reference PRS resources being determined from the plurality of PRS resources;

[0097] The measurement result receiving module 602 is configured to receive the measurement results.

[0098] The positioning module 603 is configured to determine position coordinates of the user equipment to be positioned according to at least the measurement results.

[0099] In a specific implementation, the above-mentioned downlink AoD positioning apparatus 60 can correspond to a chip with a downlink AoD positioning function in a network device, such as a SOC (System-On-a-Chip), a baseband chip, or the like; or correspond to a chip module including a chip with a downlink AoD positioning function in a network device; or correspond to a chip module with a downlink AoD positioning function chip, or correspond to a network device.

[0100] For more details about the working principles and working modes of the downlink AoD positioning apparatus 50 and the downlink AoD positioning apparatus 60, refer to the related descriptions in Figures 1 to 3 , which will not be repeated here.

[0101] As for each apparatus and product described in the above embodiments, each module / unit contained therein can be a software module / unit or a hardware module / unit, or part of a software module / unit and part of a hardware module / unit. For example, as for each apparatus and product applied to or integrated in a chip, each module / unit contained therein can be implemented in the form of a circuit or the like hardware, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the chip, and the remaining (if any) modules / units can be implemented in the form of a circuit or the like hardware; as for each apparatus and product applied to or integrated in a chip module, each module / unit contained therein can be implemented in the form of a circuit or the like hardware, and different modules / units can be located in the same component (e.g., a chip, a circuit module, or the like) or different components of the chip module, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the chip module, and the remaining (if any) modules / units can be implemented in the form of a circuit or the like hardware; as for each apparatus and product applied to or integrated in a terminal, each module / unit contained therein can be implemented in the form of a circuit or the like hardware, and different modules / units can be located in the same component (e.g., a chip, a circuit module, or the like) or different components of the terminal, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the terminal, and the remaining (if any) modules / units can be implemented in the form of a circuit or the like hardware.

[0102] The embodiments of the present application also disclose a storage medium, which is a computer-readable storage medium, and has a computer program stored thereon, the computer program being capable of executing the steps of the above-mentioned downlink AoD positioning method when running. The storage medium can include ROM, RAM, a magnetic disk, or an optical disk, etc. The storage medium can also include a non-volatile memory or a non-transitory memory, etc.

[0103] The embodiments of the present application also disclose a user equipment, which can comprise a memory and a processor, and the memory stores a computer program capable of running on the processor. The processor can execute the steps of the downlink AoD positioning method shown in the embodiments of the present application when running the computer program. Figure 1 The user equipment comprises, but is not limited to, a terminal device such as a mobile phone, a computer, a tablet computer and the like.

[0104] The embodiments of the present application also disclose a network side equipment, which can comprise a memory and a processor, and the memory stores a computer program capable of running on the processor. The processor can execute the steps of the downlink AoD positioning method shown in the embodiments of the present application when running the computer program. Figure 2 The network side equipment comprises, but is not limited to, a base station, a server and the like.

[0105] The technical solutions of the present application are also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-Everything (V2X) architecture and the like.

[0106] The core network in the embodiments of the present application can be an evolved packet core (EPC), a 5G core network, and can also be a new core network in a future communication system. The 5G core network is composed of a group of devices and implements access and mobility management functions (AMF) for mobility management and the like, user plane functions (UPF) for data packet routing and forwarding and QoS management and the like, and session management functions (SMF) for session management, IP address allocation and management and the like. The EPC can be composed of an MME for mobility management, gateway selection and the like, an S-GW for data packet forwarding and the like, and a PDN gateway (P-GW) for terminal address allocation, rate control and the like.

[0107] The base station (BS) in the embodiments of the present application, which can also be referred to as a base station device, is a kind of device deployed in a radio access network (RAN) to provide wireless communication functions. For example, the device providing base station functions in a 2G network includes a base transceiver station (BTS), the device providing base station functions in a 3G network includes a NodeB, the device providing base station functions in a 4G network includes an evolved NodeB (eNB), in a wireless local area network (WLAN), the device providing base station functions is an access point (AP), the device providing base station functions in a 5G new radio (NR) is a gNB, and a continuously evolved NodeB (ng-eNB), wherein the gNB and the terminal communicate with each other using NR technology, the ng-eNB and the terminal communicate with each other using E-UTRA (Evolved Universal Terrestrial Radio Access) technology, and the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiments of the present application also includes devices providing base station functions in future new communication systems and the like.

[0108] The base station controller in the embodiments of the present application is a kind of device for managing base stations, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, and a device for controlling and managing base stations in future new communication systems.

[0109] The network side network in the embodiments of the present application refers to a communication network providing communication services for terminals, including base stations of a radio access network, and can also include base station controllers of a radio access network, and can also include devices on the core network side.

[0110] The terminal in the embodiments of the present application can refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal device, wireless communication device, user agent or user equipment. The terminal device can 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 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), etc., and the embodiments of the present application are not limited thereto.

[0111] The embodiments of the present application define the unidirectional communication link from the access network to the terminal as a downlink, the data transmitted on the downlink as downlink data, and the transmission direction of the downlink data 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 an uplink direction.

[0112] It should be understood that the term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein represents that the front and rear associated objects are in an "or" relationship.

[0113] The "multiple" appearing in the embodiments of the present application means two or more.

[0114] The first, second, etc. appearing in the embodiments of the present application are only for illustrative and distinguishing purposes, and there is no order difference, nor do they represent a special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0115] The "connection" appearing in the embodiments of the present application means direct connection or indirect connection and various connection modes to realize communication between devices, and the embodiments of the present application do not make any limitation thereto.

[0116] It should be understood that, in the embodiments of the present application, the processor can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0117] The above-described embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired or wireless manner. 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. containing one or more available medium collections. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid state disk.

[0118] In several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the above-described device embodiments are only illustrative; for example, the division of the units is only a logical function division, and actual implementation can have another division manner; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0119] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0120] In addition, each functional unit in each embodiment of the application can be integrated in one processing unit, or each unit can be physically included separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of hardware plus software functional unit.

[0121] Although the application is disclosed as above, the application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the application, and therefore the protection scope of the application should be subject to the scope defined by the claims.

Claims

1. A downlink AoD positioning method, characterized in that, The method comprises: receiving configuration information sent by a network side device, the configuration information comprising a plurality of PRS resources sent by at least one TRP; measuring the plurality of PRS resources to obtain measurement results, the measurement results comprising an absolute angle of departure of a current user equipment position from a position of the at least one TRP, the absolute angle of departure being an angle of the current user equipment position relative to a coordinate axis in a global coordinate system or an antenna array coordinate system centered on the position of the at least one TRP, the absolute angle of departure having a mapping relationship with a signal quality corresponding to the plurality of PRS resources, the mapping relationship being pre-measured; reporting the measurement results to enable the network side device to determine position coordinates of the current user equipment according to the measurement results.

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

3. The downlink AoD positioning method of claim 1, wherein, The measurement of the plurality of PRS resources comprises: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; determining the absolute angle of departure according to the signal qualities corresponding to the plurality of PRS resources.

4. The downlink AoD positioning method of claim 1, wherein, The configuration information comprises a beam angle of departure of a transmission beam of the plurality of PRS resources, and the measurement of the plurality of PRS resources comprises: measuring the plurality of PRS resources to obtain signal qualities corresponding to the plurality of PRS resources; determining a reference PRS resource, and determining an included angle of a beam angle of departure of a transmission beam of the reference PRS resource relative to the absolute angle of departure as a relative angle of departure according to the signal qualities corresponding to the plurality of PRS resources.

5. The downlink AoD positioning method of claim 4, wherein, The reference PRS resource is determined in one or more of the following ways: determining the reference PRS resource according to the signal qualities corresponding to the plurality of PRS resources; or, determining the reference PRS resource according to the configuration information.

6. The downlink AoD positioning method of claim 4, wherein, The reference PRS resource comprises one or more of: a PRS resource having a minimum included angle between a beam angle of departure of a transmission beam and the absolute angle of departure, a PRS resource having the best signal quality, and a reference PRS resource indicated by the configuration information.

7. A downlink AoD positioning method, characterized in that, The method comprises: configuring a plurality of PRS resources sent by at least one TRP and sending the plurality of PRS resources to enable a user equipment to be positioned to measure the plurality of PRS resources to obtain measurement results, the measurement results comprising an absolute angle of departure of a position of the user equipment to be positioned from a position of the at least one TRP, the absolute angle of departure being an angle of the position of the user equipment to be positioned relative to a coordinate axis in a global coordinate system or an antenna array coordinate system centered on the position of the at least one TRP, the absolute angle of departure having a mapping relationship with a signal quality corresponding to the plurality of PRS resources, the mapping relationship being pre-measured; receiving the measurement results; determining position coordinates of the user equipment to be positioned according to at least the measurement results.

8. The downlink AoD positioning method of claim 7, wherein, The determination of the position coordinates of the user equipment to be positioned according to at least the measurement results comprises: determining the position coordinates of the user equipment to be positioned according to at least the position coordinates of the at least one TRP and the absolute angle of departure; Alternatively, the absolute angle is determined according to a beam departure angle and a relative departure angle of a transmission beam of a reference PRS resource, and the position coordinates of the user equipment to be positioned are determined according to at least the position coordinates of the at least one TRP and the absolute angle.

9. An apparatus for downlink AoD positioning, the apparatus comprising: The method comprises the following steps: A configuration information receiving module is configured to receive configuration information transmitted by a network side device, wherein the configuration information comprises a plurality of PRS resources transmitted by at least one TRP; A measurement module is configured to measure the plurality of PRS resources to obtain measurement results, wherein the measurement results comprise an absolute angle of a position of a current user equipment to a position of the at least one TRP, the absolute angle refers to an angle of the position of the current user equipment to a coordinate axis in a global coordinate system or an antenna array coordinate system with the position of the at least one TRP as a center, and a mapping relationship exists between the absolute angle and a signal quality corresponding to the plurality of PRS resources, and the mapping relationship is pre-measured; A reporting module is configured to report the measurement results, so that the network side device determines position coordinates of the current user equipment according to the measurement results.

10. An apparatus for downlink AoD positioning, the apparatus comprising: The method comprises the following steps: A configuration module is 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 measurement results, wherein the measurement results comprise an absolute angle of a position of the user equipment to be positioned to a position of the at least one TRP, the absolute angle refers to an angle of the position of the current user equipment to a coordinate axis in a global coordinate system or an antenna array coordinate system with the position of the at least one TRP as a center, and a mapping relationship exists between the absolute angle and a signal quality corresponding to the plurality of PRS resources, and the mapping relationship is pre-measured; A measurement result receiving module is configured to receive the measurement results; A positioning module is configured to determine position coordinates of the user equipment to be positioned according to at least the measurement results.

11. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is run by the processor to execute the steps of the downlink AoD positioning method in any one of claims 1 to 8. 12.A user equipment, comprising a memory and a processor, wherein a computer program is stored on the memory and executable on the processor, and characterized in that, The processor runs the computer program to execute the steps of the downlink AoD positioning method in 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 that is loadable into and executable by the processor, characterized in that, The processor runs the computer program to execute the steps of the downlink AoD positioning method in claim 7 or 8.

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