WO2021249109A1

WO2021249109A1 - Communication method and apparatus

Info

Publication number: WO2021249109A1
Application number: PCT/CN2021/093709
Authority: WO
Inventors: 史桢宇; 李汐
Original assignee: 华为技术有限公司
Priority date: 2020-06-08
Filing date: 2021-05-13
Publication date: 2021-12-16
Also published as: CN113840224A

Abstract

Provided by the present application are a communication method and apparatus, which can solve the problem in which positioning results of a terminal device are inaccurate, and which can be applied to a V2X system, an Internet of Vehicles system, an automatic driving system, an intelligent driving system, an Internet of Things system, a 5G system, and other systems. The method comprises: a positioning measurement device acquires measurement results of N channel propagation paths of a terminal device and sends same to a positioning calculation device by means of a first message, so that the positioning calculation device can determine the position of the terminal device according to the measurement results of the N channel propagation paths. N is a positive integer, and the measurement result of each channel propagation path comprises an identifier of each channel propagation path and one or more of the following information: arrival time, angle of arrival, or received power.

Description

Communication method and device

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 202010514692.7, and the application name is "communication method and device" on June 8, 2020, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of communication, and in particular to a communication method and device.

Background technique

In communication scenarios such as autonomous driving, the Internet of Things, and drones, it is necessary to accurately obtain the location of the terminal device and provide network services, such as automatic navigation services, based on the location of the terminal device.

Currently, the time of arrival (TOA) and/or the angle of arrival (AOA) of the received reference signal can be measured, and then the position of the terminal device can be determined using the line-circle intersection method. For example, the access network device measures the arrival time and/or angle of arrival of the reference signal sent by the terminal device, and reports it to the location management function (LMF) network element, and the LMF network element determines the terminal device and the base station based on the arrival time Determine the position of the terminal device in combination with the relative angle. Taking a two-dimensional plane as an example, a line refers to a ray whose starting point is the base station and whose angle with the true north direction is the aforementioned angle of arrival. A circle refers to a ray with the base station as the center and the distance between the terminal equipment and the base station as the radius. Circle, the intersection of the above-mentioned ray and the circle is the position of the terminal device.

However, when the arrival time and the arrival angle do not belong to the same channel propagation path, there will be a problem of inaccurate positioning results. For example, due to factors such as signal reflection and rapid signal fading, the measured arrival time and/or angle of arrival have a large error, which leads to inaccurate positioning results.

Summary of the invention

The embodiments of the present application provide a communication method and device, which can solve the problem of inaccurate positioning results of terminal equipment.

In order to achieve the above objectives, this application adopts the following technical solutions:

In the first aspect, a communication method is provided. The method includes: the positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal equipment, and the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: each channel propagation path For the corresponding arrival time, the arrival angle corresponding to each channel propagation path, and the received power corresponding to each channel propagation path, N is a positive integer. Then, the positioning measurement device sends a first message to the positioning calculation device; wherein the first message includes the measurement results of the N channel propagation paths, and the measurement results of the N channel propagation paths are used to determine the location of the terminal device.

Based on the communication methods described in the first aspect and the following second aspect, the positioning measurement device can report the measurement results of the N channel propagation paths of the terminal device, such as arrival time, angle of arrival, or received power, that is, the reported N channels There is a binding relationship between the measurement result of the channel propagation path and the N channel propagation paths, so that the positioning calculation device can determine the position of the terminal device based on the measurement result bound to the channel propagation path, which can solve the problem of different types used in the positioning process. The measurement results, such as the time of arrival and the angle of arrival, do not belong to the problem of poor positioning accuracy caused by the same channel propagation path, thereby improving the accuracy of the positioning result of the terminal device.

In a possible design solution, the above-mentioned positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal device, which may include: the positioning measurement device obtains the channel impulse response; the positioning measurement device determines the N channels according to the channel impulse response The measurement result of the propagation path. Among them, the channel impulse response includes the time domain channel impulse response. Optionally, the channel impulse response may also include a frequency domain channel impulse response. This application does not specifically limit this.

Optionally, the above positioning measurement device determines the measurement results of the N channel propagation paths according to the channel impulse response, which may include: the positioning measurement device filters out the N channel propagation paths from the channel impulse response, and determines the N channel propagation paths Measurement results.

Among them, the N channel propagation paths can be any of the following: N channel propagation paths with the largest received power in the channel impulse response; or N channel propagation paths with the smallest arrival time in the channel impulse response; or, channel impulse response N channel propagation paths with the smallest arrival time and received power greater than or equal to the first power threshold in the impulse response; or N channel propagation paths with the smallest arrival time and the sum of received power greater than or equal to the second power threshold in the channel impulse response Path; or, N channel propagation paths in the channel impulse response that have the smallest time of arrival, the received power is greater than or equal to the third power threshold, and the sum of the received power is greater than or equal to the fourth power threshold. In this way, N channel propagation paths can be selected from the channel impulse response based on the received power and/or arrival time, and then based on the received data corresponding to each channel propagation path, the measurement result of each channel propagation path can be determined Other content, such as the angle of arrival, etc., so as to realize the binding of the measurement result to the channel propagation path.

Further, the identification of each channel propagation path may be a sequence number in which the channel propagation paths in the channel impulse response are sorted in the order of received power, and the channel corresponding to the received power corresponding to the sequence number The time of arrival and the angle of arrival of the propagation path are bound with the sequence number as the measurement result of the channel propagation path corresponding to the received power corresponding to the sequence number.

Or, optionally, the identification of each channel propagation path may be a sequence number after sorting the channel propagation paths in the channel impulse response in the descending order of the arrival time, and corresponding the arrival time corresponding to the sequence number The received power and the angle of arrival of the channel propagation path are bound with the sequence number as the measurement result of the channel propagation path corresponding to the arrival time corresponding to the sequence number.

Still further, the measurement result of each channel propagation path may further include a weighting factor, and the weighting factor may include one or more of the following: a time-of-arrival weighting factor, an angle-of-arrival weighting factor, a power weighting factor, or a path weighting factor. Among them, the arrival time weighting factor is negatively correlated with the value of the arrival time; the arrival time weighting factor is positively correlated with the bandwidth occupied by the reference signal; the power weighting factor is positively correlated with the value of the received power; the power weighting factor is positively related to the value of the transmission power of the reference signal Correlation; the power weighting factor is negatively correlated with the value of the center frequency point or frequency band of the transmitted reference signal; the angle of arrival weighting factor is positively correlated with the number of receiving antennas; the path weighting factor is positively correlated with one or more of the following: arrival time weighting factor, arrival Angle weighting factor, or power weighting factor.

In a possible design solution, the measurement results of the above N channel propagation paths are used to determine the position of the terminal device, which may include: determining multiple candidate positions according to the measurement results of the N channel propagation paths; The weighting factor in the measurement result of the path determines the weighted value of the multiple candidate positions; according to the weighted value of the multiple candidate positions, the weighted average of the multiple candidate positions is determined as the position of the terminal device.

In this way, the larger the value of the weighting factor, the higher the accuracy of the single measurement result or the measurement result of the channel propagation path corresponding to the weighting factor. Therefore, when multiple measurement results of the same channel propagation path are used, or multiple measurement results are used When the measurement result of a channel propagation path is used to locate the terminal device, a weighting factor can be used to adjust the positioning result to eliminate or weaken the interference of one or more of the following unfavorable factors, thereby further improving the accuracy of the positioning result. Among them, unfavorable factors may include multipath propagation (such as signal reflection, refraction, scattering, etc.), rapid signal fading, and so on.

In a possible design solution, the positioning measurement device may be an access network device, and the positioning calculation device may be a core network device or a terminal device. The N channel propagation paths include N uplink channel propagation paths, and each uplink channel propagation path The measurement results include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, and the propagation of each uplink channel The uplink received power corresponding to the path. The above-mentioned positioning measurement device sending the first message to the positioning computing device may include: the access network device sending the first message to the core network device or the terminal device. In this way, the core network device or the terminal device can determine the location of the terminal device based on the measurement results of the N uplink channel propagation paths.

In another possible design solution, the positioning measurement device can be a terminal device, and the positioning calculation device can be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, the downlink arrival angle corresponding to each downlink channel propagation path, and each downlink channel The downlink received power corresponding to the propagation path. The above-mentioned positioning measurement device sending the first message to the positioning calculation device may include: the terminal device sending the first message to the core network device or the access network device.

In a possible design solution, the communication method described in the first aspect may further include: the positioning measurement device receives a first request from the positioning calculation device. Among them, the first request is used to request the measurement results of the N channel propagation paths of the terminal device, the first request is determined according to the first capability information, and the first capability information is used to indicate the positioning measurement capability of the positioning measurement device, such as whether it supports Multipath measurement results are reported. In this way, the positioning measurement device can be assigned measurement tasks within its capability according to the first capability information, and/or the report content can be customized.

Optionally, if the positioning measurement device does not support the reporting of the aforementioned multipath measurement results, the positioning measurement device may be instructed to report the channel impulse response, and not to report the measurement results of the N channel propagation paths, and the positioning calculation device may use the reported channel impact. The excitation response screens out the measurement results of the N channel propagation paths, and determines the position of the terminal device based on the screened measurement results of the N channel propagation paths, so as to improve the applicability of the positioning method.

Or, optionally, if the positioning measurement device supports multipath measurement results reporting, the positioning measurement device may be instructed to report the measurement results of N channel propagation paths without reporting the channel impulse response, so as to reduce the amount of reported data and save resources And improve positioning efficiency.

Further, if the positioning measurement equipment supports the reporting of multipath measurement results, the workload of the positioning measurement equipment and the positioning calculation equipment can be flexibly adjusted according to the load conditions of the positioning measurement equipment and the positioning calculation equipment, so as to take into account the positioning measurement task and normal communication. Thereby improving the operating efficiency of the entire wireless network.

Optionally, before the positioning measurement device receives the first request, the communication method described in the first aspect may further include: the positioning measurement device sends the first capability information to the positioning calculation device.

Further, before the positioning measurement device sends the first capability information, the communication method described in the first aspect may further include: the positioning measurement device receives a second request from the positioning calculation device. Wherein, the second request is used to request the first capability information. That is, the positioning measurement device may send the first capability information after receiving the second request.

It should be understood that the positioning measurement device may also actively send the first capability information. The embodiment of the present application does not specifically limit the implementation manner of reporting the first capability information.

In the embodiment of the present application, the above-mentioned positioning measurement device and the positioning calculation device may be different devices, or may be the same device. When it is the same device, the interaction between the positioning measurement device and the positioning calculation device can be regarded as the internal operation of the same device. For example, the same device can be a terminal device. The terminal device can filter out the measurement results of N downlink channel propagation paths from the downlink channel impulse response, and determine the terminal device based on the selected N downlink channel propagation path measurement results The location is then reported to the network, such as core network equipment, and/or, access network equipment.

For another example, the same device can be an access network device, and the access network device can filter out the measurement results of N uplink channel propagation paths from the uplink channel impulse response, and based on the selected N uplink channel propagation paths The measurement result determines the location of the terminal device, and then reports it to the core network device, such as the positioning management network element, and/or, delivers it to the terminal device.

In the second aspect, a communication method is provided. The method includes: a positioning calculation device receives a first message from a positioning measurement device; wherein, the first message includes a channel impulse response or a measurement result of N channel propagation paths of a terminal device, and the measurement result of each channel propagation path includes each The identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and the receiving power corresponding to each channel propagation path, where N is a positive integer. Then, the positioning calculation device determines the location of the terminal device according to the measurement results of the N channel propagation paths.

In a possible design solution, the communication method described in the second aspect may further include: the positioning calculation device determines the measurement results of the N channel propagation paths according to the channel impulse response.

Optionally, the above positioning calculation device determining the measurement results of the N channel propagation paths according to the channel impulse response may include: the positioning calculation device filters out the N channel propagation paths from the channel impulse response, and determines the N channel propagation paths Measurement results.

Among them, the N channel propagation paths can be any of the following: N channel propagation paths with the largest received power in the channel impulse response; or N channel propagation paths with the smallest arrival time in the channel impulse response; or, channel impulse response N channel propagation paths with the smallest arrival time and received power greater than or equal to the first power threshold in the impulse response; or N channel propagation paths with the smallest arrival time and the sum of received power greater than or equal to the second power threshold in the channel impulse response Path; or, N channel propagation paths in the channel impulse response that have the smallest time of arrival, the received power is greater than or equal to the third power threshold, and the sum of the received power is greater than or equal to the fourth power threshold.

In a possible design solution, the above positioning calculation device determines the position of the terminal device according to the measurement results of the N channel propagation paths, which may include: determining multiple candidate positions according to the measurement results of the N channel propagation paths; The weighting factor in the measurement result of the channel propagation path determines the weighted value of the multiple candidate positions; according to the weighted value of the multiple candidate positions, the weighted average of the multiple candidate positions is determined as the position of the terminal device.

In a possible design solution, the positioning measurement device may be an access network device, and the positioning calculation device may be a core network device or a terminal device. The N channel propagation paths include N uplink channel propagation paths, and each uplink channel propagation path The measurement results include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, and the propagation of each uplink channel The uplink received power corresponding to the path. The foregoing positioning calculation device receiving the first message from the positioning measurement device may include: the core network device or the terminal device receiving the first message from the access network device.

In another possible design solution, the positioning measurement device can be a terminal device, and the positioning calculation device can be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, the downlink arrival angle corresponding to each downlink channel propagation path, and each downlink channel The downlink received power corresponding to the propagation path. The foregoing positioning calculation device receiving the first message from the positioning measurement device may include: the core network device or the access network device receiving the first message from the terminal device.

In a possible design solution, the communication method described in the second aspect may further include: the positioning calculation device sends a first request to the positioning measurement device; wherein the first request is used to request the N channel propagation paths of the terminal device As a result of the measurement, the first request is determined according to the first capability information, and the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.

Optionally, before the positioning calculation device sends the first request to the positioning measurement device, the communication method described in the second aspect may further include: the positioning calculation device receives the first capability information.

Further, before the positioning computing device receives the first capability information, the communication method described in the second aspect may further include: the positioning computing device sending a second request; wherein the second request is used to request the first capability information.

In addition, the technical effect of the communication method described in the second aspect may refer to the technical effect of the communication method described in the first aspect, which will not be repeated here.

In a third aspect, a communication device is provided. The device includes: a processing module and a transceiver module. Among them, the processing module is used to obtain the measurement results of the N channel propagation paths of the terminal equipment, and the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: each channel propagation path For the corresponding arrival time, the arrival angle corresponding to each channel propagation path, and the received power corresponding to each channel propagation path, N is a positive integer. The transceiver module is configured to send a first message to the positioning computing device; where the first message includes measurement results of N channel propagation paths, and the measurement results of N channel propagation paths are used to determine the location of the terminal device.

In a possible design solution, the processing module is also used to obtain the channel impulse response; the processing module is also used to determine the measurement results of the N channel propagation paths according to the channel impulse response.

Optionally, the processing module is further configured to filter out N channel propagation paths from the channel impulse response, and determine the measurement results of the N channel propagation paths.

Among them, the N channel propagation paths can be any of the following: N channel propagation paths with the largest received power in the channel impulse response; or N channel propagation paths with the smallest arrival time in the channel impulse response; or, channel impulse response N channel propagation paths with the smallest arrival time and received power greater than or equal to the first power threshold in the impulse response; or N channel propagation paths with the smallest arrival time and the sum of received power greater than or equal to the second power threshold in the channel impulse response Path; or, N channel propagation paths in the channel impulse response that have the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold.

In a possible design solution, the communication device described in the third aspect may be an access network device, the positioning calculation device may be a core network device or a terminal device, the N channel propagation paths include N uplink channel propagation paths, and each The measurement results of each uplink channel propagation path include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, The uplink received power corresponding to each uplink channel propagation path. Correspondingly, the transceiver module is also used for the access network device to send the first message to the core network device or the terminal device.

In another possible design solution, the communication device described in the third aspect may be a terminal device, the positioning calculation device may be a core network device or an access network device, the N channel propagation paths include N downlink channel propagation paths, The measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, and the downlink arrival angle corresponding to each downlink channel propagation path , The downlink received power corresponding to each downlink channel propagation path. Correspondingly, the transceiver module is also used for the terminal device to send the first message to the core network device or the access network device.

In a possible design solution, the transceiver module is also used to receive a first request from the positioning computing device; wherein the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on Determined by the first capability information, the first capability information is used to indicate the positioning measurement capability of the communication device.

Optionally, the transceiver module is further configured to send the first capability information to the positioning computing device before receiving the first request from the positioning computing device.

Further, the transceiver module is further configured to receive a second request from the positioning computing device before sending the first capability information to the positioning computing device; wherein the second request is used to request the first capability information.

Optionally, the transceiver module may include a receiving module and a sending module. The receiving module is used to perform the receiving function of the communication device described in the third aspect, and the sending module is used to perform the transmitting function of the communication device described in the third aspect. The embodiments of the present application do not make any limitation on the specific implementation of the transceiver function.

Optionally, the communication device described in the third aspect may further include a storage module, and the storage module stores a program or an instruction. When the processing module executes the program or instruction, the communication device described in the third aspect can execute the communication method described in the first aspect.

It should be noted that the communication device described in the third aspect may be a positioning measurement device, or may be provided in a chip (system) or other components or components of the positioning measurement device, which is not specifically limited in the embodiment of the present application. For example, in the uplink measurement solution, the communication device described in the third aspect may be an access network device. For another example, in a downlink measurement solution, the communication device described in the third aspect may be a terminal device.

In addition, the technical effect of the communication device described in the third aspect may refer to the technical effect of the communication method described in the first aspect, which will not be repeated here.

In a fourth aspect, a communication device is provided. The device includes: a processing module and a transceiver module. Among them, the transceiver module is used to receive the first message from the positioning measurement device; wherein, the first message includes the channel impulse response or the measurement result of the N channel propagation paths of the terminal device, and the measurement result of each channel propagation path includes each channel. The identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and the receiving power corresponding to each channel propagation path, where N is a positive integer. The processing module is used to determine the location of the terminal device according to the measurement results of the N channel propagation paths.

In a possible design solution, the processing module is also used to determine the measurement results of the N channel propagation paths according to the channel impulse response.

In a possible design solution, the processing module is also used to perform the following steps: determine multiple candidate positions according to the measurement results of the N channel propagation paths; determine according to the weighting factors in the measurement results of the N channel propagation paths Weighted values of multiple candidate positions; according to the weighted values of multiple candidate positions, the weighted average of multiple candidate positions is determined as the position of the terminal device.

In a possible design solution, the positioning measurement device may be an access network device, and the communication device described in the fourth aspect may be a core network device or a terminal device. The N channel propagation paths include N uplink channel propagation paths. The measurement results of each uplink channel propagation path include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, The uplink received power corresponding to each uplink channel propagation path. Correspondingly, the transceiver module is also used for core network equipment or terminal equipment to receive the first message from the access network equipment.

In another possible design solution, the positioning measurement device may be a terminal device, the communication device described in the fourth aspect may be a core network device or an access network device, the N channel propagation paths include N downlink channel propagation paths, The measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, and the downlink arrival angle corresponding to each downlink channel propagation path , The downlink received power corresponding to each downlink channel propagation path. Correspondingly, the transceiver module is also used for the core network device or the access network device to receive the first message from the terminal device.

In a possible design solution, the transceiver module is also used to send a first request to the positioning measurement device; wherein the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on the first request. If one capability information is determined, the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.

Optionally, the transceiver module is further configured to receive the first capability information before sending the first request to the positioning measurement device.

Further, the transceiver module is further configured to send a second request before receiving the first capability information; wherein, the second request is used to request the first capability information.

Optionally, the transceiver module may include a receiving module and a sending module. The receiving module is used to perform the receiving function of the communication device described in the fourth aspect, and the sending module is used to perform the transmitting function of the communication device described in the fourth aspect. The embodiments of the present application do not make any limitation on the specific implementation of the transceiver function.

Optionally, the communication device of the fourth aspect may further include a storage module that stores programs or instructions. When the processing module executes the program or instruction, the communication device described in the fourth aspect can execute the communication method described in the second aspect.

It should be noted that the communication device described in the fourth aspect may be a positioning computing device, or may be provided in a chip (system) or other components or components of the positioning computing device, which is not specifically limited in the embodiment of the present application. For example, in the uplink measurement solution, the communication device described in the fourth aspect may be a core network device or a terminal device. For another example, in a downlink measurement solution, the communication device described in the fourth aspect may be a core network device or an access network device.

In addition, the technical effect of the communication device described in the fourth aspect may refer to the technical effect of the communication method described in the first aspect, which will not be repeated here.

In a fifth aspect, a communication device is provided. The device is used to execute the communication method described in any one of the first aspect to the second aspect.

In a sixth aspect, a communication device is provided. The device includes: a processor. The processor is configured to execute the communication method according to any one of the first aspect to the second aspect.

In a seventh aspect, a communication device is provided. The device includes a processor, which is coupled with the memory. Wherein, the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the communication device executes the communication method described in any one of the first aspect to the second aspect.

In a possible design, the communication device described in the seventh aspect may further include a transceiver. The transceiver can be a transceiver circuit or an input/output port. The transceiver can be used for the communication device to communicate with other communication devices.

Optionally, the transceiver may include a receiver and a transmitter. The receiver is used to perform the receiving function of the communication device described in the seventh aspect, and the transmitter is used to perform the sending function of the communication device described in the seventh aspect. The embodiment of the present application does not make any limitation on the specific implementation of the transceiver.

It should be noted that the communication device according to any one of the above fifth aspect to the seventh aspect may be the above-mentioned positioning measurement equipment, positioning calculation equipment, core network equipment, access network equipment, or terminal equipment, or may be set in The chip (system) or other components or components of the above-mentioned positioning measurement equipment, positioning calculation equipment, core network equipment, access network equipment, or terminal equipment is not specifically limited in the embodiment of the present application.

In addition, for the technical effects of the communication device described in any one of the fifth aspect to the seventh aspect, reference may be made to the technical effects of the communication method described in the first aspect, which will not be repeated here.

In an eighth aspect, a communication system is provided. The communication system includes positioning measurement equipment and positioning calculation equipment.

In a possible design solution, the positioning measurement device may be an access network device, and the positioning calculation device may be a core network device or a terminal device.

In another possible design solution, the positioning measurement device may be a terminal device, and the positioning calculation device may be a core network device or an access network device.

In a ninth aspect, a computer-readable storage medium is provided, including: a computer program or instruction; when the computer program or instruction runs on a computer, the computer executes any one of the possible implementations of the first aspect to the second aspect The communication method described in the method.

In a tenth aspect, a computer program product is provided, including a computer program or instruction, when the computer program or instruction runs on a computer, the computer is caused to execute any one of the possible implementation manners of the first aspect to the second aspect Communication method.

Description of the drawings

FIG. 1 is a schematic diagram 1 of the architecture of a communication system provided by an embodiment of this application;

FIG. 2 is a second schematic diagram of the architecture of the communication system provided by an embodiment of the application;

FIG. 3 is a first schematic flowchart of a communication method provided by an embodiment of this application;

FIG. 4 is a schematic diagram 2 of the flow of the communication method provided by an embodiment of this application;

FIG. 5 is a third schematic flowchart of a communication method provided by an embodiment of this application;

FIG. 6 is a first structural diagram of a communication device provided by an embodiment of this application;

FIG. 7 is a second structural diagram of a communication device provided by an embodiment of this application.

detailed description

The technical solution in this application will be described below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless fidelity (WiFi) systems, vehicle-to-everything (V2X) communication systems, and device-to-devie (device-to-devie) systems. D2D) communication systems, car networking communication systems, 4th generation (4G) mobile communication systems, such as long term evolution (LTE) systems, and worldwide interoperability for microwave access (WiMAX) communications System, the fifth generation (5G) mobile communication system, such as the new radio (NR) system, and future communication systems, such as the sixth generation (6G) mobile communication system, etc.

This application will present various aspects, embodiments, or features around a system that may include multiple devices, components, modules, and the like. It should be understood and understood that each system may include additional devices, components, modules, etc., and/or may not include all the devices, components, modules, etc. discussed in conjunction with the accompanying drawings. In addition, a combination of these schemes can also be used.

In addition, in the embodiments of the present application, words such as "exemplary" and "for example" are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as an "example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, the term example is used to present the concept in a concrete way.

In the embodiments of this application, "information", "signal", "message", "channel", and "singaling" can sometimes be used together. It should be noted that, When the difference is not emphasized, the meaning to be expressed is the same. "的 (of)", "corresponding (relevant)" and "corresponding (corresponding)" can sometimes be used together. It should be pointed out that the meanings to be expressed are the same when the difference is not emphasized.

In the embodiments of the present application, sometimes a subscript such as W1 may be typographically erroneous as a non-subscript form such as W1. When the difference is not emphasized, the meanings to be expressed are the same.

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation to the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

In order to facilitate the understanding of the embodiments of the present application, first, the communication system shown in FIG. 1 and FIG. 2 is taken as an example to describe in detail the communication system applicable to the embodiments of the present application.

Exemplarily, FIG. 1 is a schematic diagram 1 of the architecture of a communication system provided by an embodiment of this application. As shown in Figure 1, the communication system includes a positioning measurement device and a positioning calculation device.

Among them, the positioning measurement equipment is used to receive positioning measurement tasks and send positioning measurement results. The positioning calculation device is used to receive the positioning measurement result, and determine the position of the terminal device according to the positioning measurement result.

The following describes the communication system shown in FIG. 1 in detail with reference to the communication system shown in FIG. 2 as an example. Exemplarily, FIG. 2 is a second schematic diagram of the architecture of the communication system provided by an embodiment of this application. As shown in Figure 2, the communication system includes core network equipment, access network equipment and terminal equipment. Among them, the terminal device is a terminal device to be located (hereinafter referred to as a terminal device), such as a mobile phone, a vehicle-mounted terminal, or a vehicle equipped with a vehicle-mounted terminal.

The following are examples of the upstream and downstream solutions.

In the uplink solution, the positioning measurement device shown in FIG. 1 may be the access network device shown in FIG. 2, and the positioning calculation device shown in FIG. 1 may be the core network device shown in FIG. 2. Or terminal equipment. In the uplink scenario, the access network device can obtain the uplink channel impulse response (uplink channel impulse response) according to the uplink reference signal (UL-RS) received from the terminal device, such as sounding reference signal (SRS). response), and then filter out the measurement results of N uplink channel propagation paths from the uplink channel impulse response and send them out. Correspondingly, the core network device or the terminal device can determine the location of the terminal device according to the measurement results of the N uplink channel propagation paths received from the access network device.

Optionally, the foregoing operation of filtering out the measurement results of the N uplink channel propagation paths from the uplink channel impulse response may also be performed by the positioning calculation device shown in FIG. 1, such as the core network shown in FIG. The device or terminal device is completed. In this way, the positioning measurement device shown in FIG. 1, such as the access network device shown in FIG. 2, can be transferred to the positioning computing device shown in FIG. 1, such as the core network device shown in FIG. Or the terminal device sends an uplink channel impulse response. Correspondingly, the positioning computing device shown in FIG. 1, the core network device or terminal device shown in FIG. 2 can receive the uplink channel impulse response, and filter out N uplink channels from the uplink channel impulse response The measurement result of the propagation path, and then the location of the terminal equipment is determined according to the measurement results of the N uplink channel propagation paths selected.

It should be understood that for the uplink solution, the requestor of the positioning measurement task may be the positioning computing device shown in FIG. 1, the core network device or terminal device shown in FIG. 2, or other devices, such as the first The navigation server deployed by three parties is not specifically limited in the embodiment of this application.

Regarding the specific implementation of the uplink solution, reference may be made to the method embodiment shown in FIG. 4 below, which will not be repeated here.

Similarly, in the downlink solution, the positioning measurement device shown in FIG. 1 may be the terminal device shown in FIG. 2, and the positioning calculation device shown in FIG. 1 may be the core network shown in FIG. 2. Equipment or access network equipment. In the downlink scenario, the terminal device can be based on the downlink reference signal (DL-RS) received from the access network device, such as channel state information reference signal (CSI-RS) or positioning reference signal ( position reference signal, SRS), obtain the downlink channel impulse response, and then filter the measurement results of the N downlink channel propagation paths from the downlink channel impulse response and send them out. Correspondingly, the core network device or the access network device can determine the location of the terminal device according to the measurement results of the N downlink channel propagation paths received from the terminal device.

Optionally, the foregoing operation of screening the measurement results of N downlink channel propagation paths from the downlink channel impulse response may also be performed by the positioning calculation device shown in FIG. 1, such as the core network device shown in FIG. Or the access network equipment is completed. In this way, the positioning measurement device shown in FIG. 1, such as the terminal device shown in FIG. 2, can be connected to the positioning computing device shown in FIG. 1, such as the core network device or interface shown in FIG. The network-connected device sends a downlink channel impulse response. Correspondingly, the positioning computing device shown in FIG. 1, the core network device or the access network device shown in FIG. 2 can receive the downlink channel impulse response, and filter out N channels from the downlink channel impulse response The measurement result of the propagation path of the downlink channel, and then the location of the terminal device is determined according to the measurement results of the N downlink channel propagation paths selected.

It should be understood that for the downlink solution, the requestor of the positioning measurement task may be the positioning computing device shown in FIG. 1, the core network device or the access network device shown in FIG. 2, or other devices. For example, a navigation server deployed by a third party, which is not specifically limited in the embodiment of the present application.

Regarding the specific implementation of the downlink solution, reference may be made to the method embodiment shown in FIG. 5 below, which will not be repeated here.

Wherein, the aforementioned core network equipment is a device located on the network side of the aforementioned communication system and provides positioning/navigation/automatic driving/smart driving services for terminal equipment, or a chip (system) or other components or components that can be installed in the equipment. This equipment includes, but is not limited to: LMF network elements, evolved serving mobile location center (E-SMLC), and third-party deployed servers with positioning functions, such as map navigation servers, autonomous driving servers, and smart driving Server etc.

The aforementioned access network device is a device that is located on the network side of the aforementioned communication system and has a wireless transceiver function, or a chip (system) or other components or components that can be installed in the device. This equipment includes but is not limited to: access points (AP) in wireless fidelity (WiFi) systems, such as home gateways, routers, servers, switches, bridges, etc., evolved Node B (evolved Node B) B, eNB), radio network controller (RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (For example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc. , It can also be 5G, such as next generation radio access network (NG-RAN) equipment in the new radio (NR) system, gNB, or transmission point (TRP or TP), 5G One or a group of antenna panels (including multiple antenna panels) of the base station in the system, or, it can also be a network node that constitutes a gNB or transmission point, such as a baseband processing unit (BBU), or a distributed unit ( Distributed unit, DU), roadside unit (RSU) with base station function, etc.

The above-mentioned terminal equipment is a terminal that is connected to the above-mentioned communication system and has a wireless transceiver function, or a chip or chip system that can be installed in the terminal. The terminal device may also be referred to as a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, and an augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ( Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, vehicle-mounted terminals, RSUs with terminal functions, etc. The terminal device of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit built into a vehicle as one or more components or units. The vehicle passes through the built-in vehicle-mounted module, vehicle-mounted module, The on-board component, on-board chip or on-board unit can implement the communication method provided in this application.

In the embodiments of the present application, the aforementioned core network equipment and access network equipment are both located on the network side of the communication system, and therefore may also be collectively referred to as network equipment or network side equipment. Correspondingly, the terminal device may also be referred to as user equipment or user-side equipment.

It should be noted that the communication method provided in the embodiments of the present application may be applicable to the communication between the positioning measurement device and the positioning calculation device shown in FIG. 1, and may also be applicable to any two of the communication methods shown in FIG. Communication between devices, such as between terminal equipment and access network equipment, between access network equipment and core network equipment, and between terminal equipment and core network equipment. For specific implementation, reference may be made to the method embodiments shown in the following FIGS. 3 to 5, which will not be repeated here.

It should be noted that the solutions in the embodiments of the present application can also be applied to other communication systems, and the corresponding names can also be replaced with the names of corresponding functions in other communication systems.

It should be understood that FIGS. 1 and 2 are only simplified schematic diagrams for ease of understanding and examples. The communication system may also include other network devices and/or other terminal devices, which are not shown in FIGS. 1 and 2.

For ease of description, the technical terms involved in the embodiments of the present application are introduced below.

1. Reference signal (reference signal, RS)

The reference signal, also known as the pilot signal, is a signal that is known to both the transmitting end and the receiving end. Specifically, the receiving end compares the received reference signal with the local sequence of the reference signal sent by the sending end, such as correlation, equalization, matched filtering, etc., to estimate the signal attenuation, channel characteristics, transmission time, etc. during the transmission process. information.

The above-mentioned reference signal may include UL-RS and DL-RS, which will be described separately below.

(1) UL-RS refers to the reference signal sent by the terminal equipment on the uplink, such as SRS, which can be used for the access network equipment to measure the arrival time of the reference signal from the terminal equipment to the access network equipment, or to measure the terminal Channel state information (channel state information, CSI) of the uplink channel between the device and the access network device.

(2) DL-RS refers to the reference signal sent by the access network equipment on the downlink, such as PRS and CSI-RS. Among them, PRS is used for terminal equipment to measure the downlink time of arrival (DL-TOA) of radio waves from the access network equipment to the terminal equipment, or to measure the downlink arrival time difference between multiple access network equipment and the terminal equipment (downlink time of arrival, DL-TOA). time difference of arrival, DL-TDOA), used for positioning by observed time difference of arrival (OTDOA); CSI-RS is used to measure the CSI of the downlink channel from the access network device to the terminal device.

2. Measurement results

The measurement result refers to the channel impulse response obtained by the receiving end according to the received reference signal, and various measurement results obtained according to the channel impulse response, such as arrival time or time difference of arrival, angle of arrival, received power, etc.

(1) Channel impulse response (channel impulse response)

Channel impulse response means that small-scale channel state information can be obtained by measuring the reference signal, and the channel state information in the frequency domain can be obtained first, that is, the attenuation and phase shift of the reference signal on different subcarriers, and then It can be converted into channel state information in the time domain through Fourier transform, and then the measurement results of multiple channel propagation paths, such as the attenuation and phase offset of each channel propagation path, can be obtained. Among them, the attenuation of each channel propagation path can be used to represent the received power, and the phase difference of different receiving antennas on the same channel propagation path can be used to calculate the angle of arrival.

In other words, according to the division of time domain and frequency domain, channel impulse response can include frequency-domain channel impulse response (frequency-domain channel impulse response) and time-domain channel impulse response (time-domain channel impulse response), according to In the uplink and downlink divisions, the channel impulse response can include the uplink channel impulse response and the downlink channel impulse response. Further, for uplink or downlink, the above-mentioned time of arrival or time difference of arrival, angle of arrival, and received power can all be divided into uplink measurement results and downlink measurement results.

(2) Sending time, arrival time and arrival time difference

The sending time refers to the specific time at which the sending end sends the reference signal, which can be used by the receiving end to determine the arrival time according to the arrival time of the reference signal, thereby determining the signal transmission delay between the sending end and the receiving end, that is, the following arrival time, Or determine the transmission delay deviation between multiple sending ends and the same receiving end, or the transmission delay deviation between the same sending end and multiple receiving ends, that is, the following arrival time difference.

The time of arrival refers to the transmission time of the reference signal from the sending end to the receiving end, which is the difference between the arrival time and the sending time, and can include the uplink arrival time and the downlink arrival time. Among them, the uplink arrival time refers to the transmission time of the uplink reference signal from the terminal device to the access network device, and the downlink arrival time refers to the transmission time of the downlink reference signal from the access network device to the terminal device.

The time difference of arrival refers to the difference of the arrival time of the reference signal between the terminal device and multiple access network devices, and may include the uplink arrival time difference and the downlink arrival time difference. Among them, the uplink arrival time difference refers to the transmission time deviation of the uplink reference signal from terminal equipment to different access network equipment, and the downlink arrival time difference refers to the transmission time deviation of the downlink reference signal from different access network equipment to the terminal equipment.

(3) Transmit power and receive power

Transmission power (transmission power, also referred to as transmission power) refers to the power at which a reference signal is sent by a transmitting end, and may include uplink transmission power and downlink transmission power. Among them, the uplink transmission power refers to the power at which the terminal device sends the uplink reference signal, and the downlink transmission power refers to the power at which the access network device sends the downlink reference signal.

It should be noted that for different frequency points or frequency bands, the effective transmission distance of the reference signal of the same transmission power may be different. Specifically, the effective transmission distance of a reference signal with a higher frequency point or band is generally smaller than the effective transmission distance of a reference signal with a lower frequency point or band.

Optionally, the transmitting end may send the value or power level of the transmission power of the reference signal to the receiving end, so that the receiving end can determine the difference between the transmitting end and the receiving end according to the value or level and the value or level of the received power. Information about signal attenuation, channel status and other information.

The received power refers to the power of the reference signal received by the receiving end, which may include the uplink received power and the downlink received power. Among them, the uplink received power refers to the power when the uplink reference signal sent by the terminal device reaches the access network device, and the downlink received power refers to the power when the downlink reference signal sent by the access network device reaches the terminal device.

Optionally, the received power may include one or more of the following: reference signal receiving power (RSRP), received signal strength indicator (RSSI), reference signal receiving quality (reference signal receiving quality) , RSRQ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), etc.

(4) Angle of arrival

Optionally, the angle of arrival includes a horizontal angle of arrival and a vertical angle of arrival. The horizontal angle of arrival refers to the angle between the propagation direction of the reference signal and true north. Specifically, starting from true north as 0 degrees, the counterclockwise direction is positive, and the clockwise direction is negative. The vertical angle of arrival refers to the angle between the propagation direction of the reference signal and directly above, starting from 0 degrees directly above, the counterclockwise direction is positive, and the clockwise direction is negative.

Optionally, according to the transmission direction of the reference signal, the angle of arrival may include the uplink angle of arrival and the downlink angle of arrival. Among them, the upstream arrival angle includes the horizontal upstream arrival angle and the vertical upstream arrival angle. The horizontal upstream arrival angle refers to the angle between the propagation direction of the upstream reference signal and true north. Specifically, starting from true north as 0 degrees, the counterclockwise direction is positive, and the clockwise direction is negative. The vertical uplink arrival angle is the angle between the propagation direction of the uplink reference signal and directly above the access network device, starting from 0 degrees directly above, the counterclockwise direction is positive, and the clockwise direction is negative.

Similarly, the downlink arrival angle includes the horizontal downlink arrival angle and the vertical downlink arrival angle. The horizontal downlink arrival angle refers to the angle between the propagation direction of the downlink reference signal and true north. Specifically, starting from true north as 0 degrees, the counterclockwise direction is positive, and the clockwise direction is negative. The vertical downlink arrival angle is the angle between the propagation direction of the downlink reference signal and the position directly above the terminal device. It starts from 0 degrees directly above, and the counterclockwise direction is positive, and the clockwise direction is negative.

It should be noted that the measurement accuracy of the angle of arrival is usually related to factors such as the receiving antenna specifications and the angle measurement algorithm. Among them, the receiving antenna specifications can include one or more of the following: the angle of the receiving antenna (such as elevation angle, azimuth angle, etc.), the number and layout of the antenna array included in the receiving antenna (array spacing, array angle, etc.), antenna array The number and layout of the array (element spacing, array angle, etc.), the number and layout of multiple receiving antennas (antenna spacing, antenna angle, etc.), etc.

In another way, the angle of arrival can also be expressed by the beam direction of the reference signal. The beam can be a synchronization signal and PBCH block (SSB) beam or a static narrow beam. By finding the strongest received power corresponding The angle between the direction corresponding to the beam and the true north and the angle between the direction corresponding to the beam and the right above are respectively regarded as the horizontal angle of arrival and the vertical angle of arrival. In addition, the beam index value of the beam can also be expressed as a measured value of the angle of arrival.

The above various measurement results can be used to determine the channel status, signal attenuation and/or signal transmission delay between the sending end and the receiving end, so that the receiving end can adjust the receiving gain and synchronize with the signal between the sending end, and then receive The data can also be used to determine the location of the terminal device, that is, to locate the terminal device.

3. Positioning algorithm of terminal equipment

According to the measurement results used, the positioning algorithm of the terminal device may include the following positioning algorithm based on the geometric intersection rule: a positioning algorithm based on the measurement result of the reference signal transmitted between the single-access network device and the terminal device, that is, the single-access network The device positioning algorithm, and the positioning algorithm based on the measurement result of the reference signal transmitted between the multiple access network device and the terminal device, that is, the multiple access network device positioning algorithm.

Optionally, the single-access network device positioning algorithm can be a ray circle intersection algorithm based on the arrival time and the angle of arrival, such as the enhanced cell identification (E-CID) algorithm; the multiple-access network device positioning algorithm, It can be a multi-circle intersection algorithm or a multi-hyperbolic intersection algorithm based on the arrival time difference of the reference signal between the terminal device and multiple access network devices, such as the serving access network device and one or more adjacent access network devices, Such as the observed time difference of arrival (OTDOA) algorithm, the uplink time difference of arrival (UTDOA) algorithm, etc.

Among them, the E-CID algorithm refers to the use of the angle of arrival and time of arrival between the single access network device and the terminal device to locate the terminal device in the single access network device positioning scenario, and the OTDOA algorithm refers to the multiple access network device scenario , Use the reference signal time difference (RSTD) measured on the downlink to locate the terminal equipment, and the UTDOA algorithm refers to the RTOA measured by the uplink in the scenario of multiple access network equipment to locate the terminal equipment.

4. Positioning agreement

The positioning protocol refers to a protocol procedure for exchanging signaling and/or data between various devices involved in the measurement/positioning operation in the wireless network in the process of positioning the terminal device.

Optionally, the positioning protocol may include: LTE positioning protocol (LTE positioning protocol, LPP) and new radio positioning protocol A (new radio positioning protocol A, NRPPa). Among them, the NRPPa protocol is the protocol layer between the access network equipment defined in the NR system and the LMF, used for positioning-related signaling transmission, and the LPP protocol is the protocol layer between the terminal equipment defined in the LTE system and the LMF network element. For positioning-related signaling transmission, the LPP protocol is currently used in the NR system.

5. Channel propagation path

For the same signal, the complexity of the channel in the transmission process causes the signal to have reflections, diffractions, etc., so that when the signal reaches the receiving end, there are different arrival times and different degrees of attenuation. In order to reflect the propagation characteristics of the channel, different The reflection, refraction, diffraction, etc. are defined as different paths, that is, the channel propagation path.

Among them, the above-mentioned various devices may include one or more of the following: a requester of a positioning measurement task, a sender of a reference signal, a receiver and a measurement party of a reference signal, a positioning computing device, a terminal device to be positioned, and so on.

It should be noted that the same operation described above may be performed by different devices, and/or the same device may also perform different operations, which is not specifically limited in the embodiment of the present application.

The communication method provided by the embodiment of the present application will be described in detail below in conjunction with FIG. 3 to FIG. 5.

First, taking the positioning measurement device and the positioning calculation device shown in FIG. 1 as an example, the communication method provided in the embodiment of the present application is described in detail.

Exemplarily, FIG. 3 is a schematic diagram 1 of the flow of a communication method provided by an embodiment of this application. As shown in Figure 3, the communication method includes the following steps S301-S303:

S301: The positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal device.

Among them, the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and each channel The received power corresponding to the propagation path, N is a positive integer.

In a possible design solution, in S301, the positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal device, which may include: the positioning measurement device obtains the channel impulse response, and the positioning measurement device determines the channel impulse response according to the channel impulse response. Measurement results of N channel propagation paths. Among them, the channel impulse response includes the time domain channel impulse response. Optionally, the channel impulse response may also include a frequency domain channel impulse response. This application does not specifically limit this.

Exemplarily, the positioning measurement device can obtain the frequency domain channel impulse response according to the received reference signal, and perform Fourier transform (or fast Fourier transform) on the frequency domain channel impulse response to obtain the time domain channel For the specific implementation of the impulse response, reference may be made to the existing implementation manner, and details are not described in the embodiment of the present application.

Optionally, the foregoing positioning measurement device determines the measurement results of the N channel propagation paths according to the channel impulse response, which may include the following S301-1 and S301-2:

S301-1: The positioning measurement device selects N channel propagation paths from the channel impulse response.

Among them, the N channel propagation paths can be any of the following, that is, N channel propagation paths can be screened from the channel impulse response according to one of the following screening methods:

Screening method 1, N channel propagation paths with the largest received power in the channel impulse response; or,

Screening method 2, N channel propagation paths with the smallest arrival time in the channel impulse response; or,

Screening method 3: N channel propagation paths with the smallest arrival time in the channel impulse response and the received power greater than or equal to the first power threshold; or,

Screening method 4: N channel propagation paths with the smallest arrival time in the channel impulse response and the sum of received powers greater than or equal to the second power threshold; or,

Screening method 5: N channel propagation paths with the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold in the channel impulse response.

Among them, the received power, the first power threshold, the second power threshold, the third power threshold, and the fourth power threshold may be reference signal receiving power (RSRP), reference signal receiving quality (RSRQ) ), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR), etc. The time of arrival may be the time at which the beam carrying the reference signal reaches the positioning measurement device, and the angle of arrival may be the angle at which the beam carrying the reference signal reaches the positioning measurement device, and may include a horizontal angle of arrival and a vertical angle of arrival. Regarding the definitions of received power, arrival time, and arrival angle, please refer to the definitions of the above terms, which will not be repeated here.

Illustratively, assuming that there are a total of 15 channel propagation paths in the channel impulse response, and the path number threshold is 5, that is, N=5, then the above-mentioned screening method 1 may include: Sort the largest to smallest, and then select the first 5 channel propagation paths from the ranked 15 channel propagation paths as the selected 5 channel propagation paths.

Exemplarily, assuming that there are a total of 20 channel propagation paths in the channel impulse response, and the path number threshold is 5, that is, N=5, the above-mentioned screening method 2 may include: reducing the above-mentioned 20 channel propagation paths according to the arrival time Sorting to the largest order, and then selecting the first 5 channel propagation paths from the 15 channel propagation paths after sorting as the selected 5 channel propagation paths.

Illustratively, assuming that there are a total of 25 channel propagation paths in the channel impulse response, the first power threshold is 40% of the maximum single-path received power in all channel propagation paths, and the path number threshold is 5, that is, N=5, Then the above-mentioned screening method 3 may include: sorting the above-mentioned 25 channel propagation paths in the order of arrival time from smallest to largest, and then selecting the highest order from the ranked 25 channel propagation paths, and the single-path received power is greater than or The 5 channel propagation paths equal to the first power threshold are used as the selected 5 channel propagation paths.

Illustratively, assuming that there are a total of 25 channel propagation paths in the channel impulse response, the second power threshold is 80% of the sum of the received power of all channel propagation paths, and the path number threshold is 5, that is, N=5, then the above Selection method 4 may include: sorting the above 25 channel propagation paths in the order of arrival time from smallest to largest, and then selecting the highest ranking from the ranked 25 channel propagation paths, and the sum of the received power is greater than or equal to the first The channel propagation paths with two power thresholds are used as the selected 5 channel propagation paths.

Illustratively, assuming that there are a total of 25 channel propagation paths in the channel impulse response, the third power threshold is 40% of the maximum single-path received power in all channel propagation paths, and the fourth power threshold is the received power of all channel propagation paths. 80% of the sum, and the threshold of the number of paths is 5, that is, N=5, then the above-mentioned screening method 5 may include: sorting the above-mentioned 25 channel propagation paths in descending order of arrival time, and then sorting from 25 Among the channel propagation paths, the five channel propagation paths with the highest ranking and single-path received power greater than or equal to the third power threshold and the sum of received power greater than or equal to the fourth power threshold are selected as the selected channel propagation paths.

It should be noted that if the number of channel propagation paths that meet the conditions in the various screening methods described above is less than the path number threshold, the number of channel propagation paths filtered out may also be less than the path number threshold. The embodiments of this application do not specifically limit this.

It should be understood that among the above five screening methods, the receiving power-based screening method and the arrival time-based screening method can be implemented independently, such as the above-mentioned screening method 1 and the screening method 2, and can also be used in combination, such as the above-mentioned screening method 3 to screening Manner 5: The embodiments of the present application do not make any limitation on the specific implementation of each screening method. For example, in the above screening method 3, the path number threshold includes the first path number threshold and the second path number threshold, and the first path number threshold is greater than the second path number threshold, the arrival time can be filtered from the channel impulse response first The candidate channel propagation path with the smallest first path number threshold, and then the candidate channel propagation path with the largest received power of the first second path threshold is selected from the candidate channel propagation paths, as N channel propagation paths; or, also The channel impulse response can be screened out from the channel impulse response to the first path number threshold candidate channel propagation path with the largest received power, and then from the candidate channel propagation paths, the second path number threshold candidate channel propagation path with the smallest arrival time can be filtered out. Path, as the propagation path of N channels. The embodiment of the application does not specifically limit the specific usage of the above-mentioned 4 screening methods.

It should be noted that the number of the foregoing N channel propagation paths is less than or equal to the path number threshold, so as to reduce the amount of data reported by the positioning measurement device, thereby further improving the positioning efficiency. It should be understood that the thresholds for the number of paths used in the foregoing various screening methods may be the same or different, which is not specifically limited in the embodiment of the present application.

S301-2: The positioning measurement device determines the measurement results of the N channel propagation paths.

Specifically, for each channel propagation path, various measurement results other than one or more measurement results involved in the screening operation can be obtained. Taking screening method 1 as an example, assuming that a total of 5 channel propagation paths are screened out according to the received power, for each of the 5 channel propagation paths, the corresponding arrival time and arrival time can be obtained from the channel impulse response. Angle and other measurement results.

Further, in order to facilitate the distinction between different channel propagation paths, an identifier may be set for each channel propagation path in the channel impulse response, for example, it may be set based on the received power or the time of arrival. The following is an example.

Optionally, the identification of each channel propagation path may be a sequence number in which the channel propagation paths in the channel impulse response are sorted according to the received power from largest to smallest, and the received power corresponding to the sequence number corresponds to the sequence number. The arrival time and angle of arrival of the channel propagation path are bound with the sequence number as the measurement result of the channel propagation path corresponding to the received power corresponding to the sequence number.

Or, optionally, the identification of each channel propagation path may be a sequence number that sorts the channel propagation paths in the channel impulse response in ascending order of arrival time, and corresponds to the arrival time corresponding to the sequence number The received power and the angle of arrival of the channel propagation path are bound with the sequence number as the measurement result of the channel propagation path corresponding to the arrival time corresponding to the sequence number.

In this way, N channel propagation paths can be selected from the channel impulse response based on the received power and/or arrival time, and then other measurements corresponding to each channel propagation path can be obtained from the channel impulse response based on each channel propagation path. As a result, such as the angle of arrival, the measurement result can be bound to the channel propagation path.

Among them, the above-mentioned time-of-arrival weighting factor is negatively correlated with the value of the time-of-arrival. It can be understood that the smaller the value of the time-of-arrival, the more accurate the positioning measurement result corresponding to the channel propagation path, so it can be set for the channel propagation path with the smaller value of the time-of-arrival Larger arrival time weighting factor, and setting a smaller arrival time weighting factor for the channel propagation path with a larger arrival time value to increase the arrival time corresponding to the channel propagation path with a smaller arrival time value in the positioning calculation process In the process of positioning calculation, the effect of the arrival time corresponding to the channel propagation path with a larger value of the arrival time is reduced, thereby improving the positioning accuracy. For example, the arrival time of the direct channel propagation path is usually less than the arrival time of the reflection channel propagation path, and the value of the arrival time weighting factor of the direct channel propagation path is greater than the value of the arrival time weighting factor of the reflection channel propagation path.

The above-mentioned arrival time weighting factor is positively correlated with the bandwidth occupied by the reference signal. It can be understood that the larger the bandwidth occupied by the reference signal, the more accurate the measured arrival time. Therefore, the channel propagation path with the larger bandwidth occupied by the reference signal corresponds to the arrival time. Set a larger time weighting factor to increase the role of the arrival time corresponding to the channel propagation path with a larger bandwidth occupied by the reference signal in the positioning calculation process, and reduce the role of the channel propagation path with a smaller bandwidth occupied by the reference signal The role of arrival time in the positioning calculation process, thereby improving positioning accuracy.

The above power weighting factor is positively correlated with the value of the received power. It can be understood that the larger the value of the received power, the smaller the loss of the reference signal. For example, the propagation distance is shorter, the fast fading area is not passed, and the direct channel propagation path is measured. The received received power is more accurate, so you can set a larger received power weighting factor for the received power corresponding to the channel propagation path with the larger the received power value to increase the received power corresponding to the channel propagation path with the larger the received power value. The role played in the positioning calculation process, and the smaller the value of the reduced received power, the role of the received power corresponding to the channel propagation path in the positioning calculation process, thereby improving the positioning accuracy.

The above-mentioned power weighting factor is positively correlated with the value of the transmission power of the reference signal. It can be understood that the higher the transmission power, the greater the maximum propagation distance of the reference signal. When the distance between the two is a certain value, the larger the value of the transmission power, the larger the value of the received power. Therefore, a larger received power weighting factor can be set for the received power corresponding to the channel propagation path with the larger the value of the transmission power. In order to increase the value of the transmission power the greater the value of the channel propagation path corresponding to the received power in the positioning calculation process, and reduce the value of the lower the value of the transmission power channel propagation path corresponding to the received power in the positioning calculation process , Thereby improving positioning accuracy.

The above-mentioned power weighting factor is negatively correlated with the value of the center frequency or frequency band of the transmitted reference signal. It can be understood that the greater the value of the center frequency or frequency band of the transmitted reference signal, the smaller the maximum propagation distance of the reference signal. Accordingly, when When the distance between the positioning measurement device and the sender of the reference signal at a certain time is a certain value, the smaller the value of the center frequency or frequency band of the sent reference signal, the larger the value of the received power, so it can be used as a reference for sending The smaller the value of the signal center frequency or frequency band, the corresponding received power of the channel propagation path, the larger the received power weighting factor is set to increase the center frequency of the reference signal or the smaller the value of the frequency band, the smaller the value of the channel propagation path corresponds to the reception The power plays a role in the positioning calculation process, and reduces the role of the received power corresponding to the channel propagation path with the larger the value of the center frequency point of the reference signal or the frequency band in the positioning calculation process, thereby improving the positioning accuracy.

The above-mentioned angle of arrival weighting factor is positively correlated with the number of receiving antennas. It can be understood that the more receiving antennas, the higher the accuracy of the angle of arrival measurement. Therefore, a larger angle of arrival can be set for the channel propagation path with more receiving antennas. Weighting factor to increase the role of the angle of arrival corresponding to the channel propagation path with more receiving antennas in the positioning calculation process, and reduce the role of the arrival angle corresponding to the channel propagation path with fewer receiving antennas in the positioning calculation process , Thereby improving positioning accuracy.

It should be noted that in addition to the number of receiving antennas, the angle-of-arrival weighting factor can also be combined with other content of the receiving antenna specifications of the positioning measurement device (refer to the explanation of the terminology of the angle of arrival above), and/or the angle estimation algorithm used The determination of other factors can be specifically determined in combination with the role played by various factors in the process of measuring the angle of arrival, which will not be described in detail in the embodiments of the present application.

The above-mentioned path weighting factor is positively correlated with one or more of the following: time-of-arrival weighting factor, angle-of-arrival weighting factor, or power weighting factor. It can be understood that the more accurate the above-mentioned individual measurement results, the corresponding channel propagation path measurement results. The more accurate, the path weighting factor can be determined according to the time-of-arrival weighting factor, the angle-of-arrival weighting factor, or the power weighting factor.

In the embodiments of the present application, the weighting factor may also be understood as credibility or reliability, and is used to indicate the accuracy of the corresponding channel propagation path or the corresponding measurement result.

In a possible design solution, the positioning measurement device may be an access network device, and the positioning calculation device may be a core network device or a terminal device. The N channel propagation paths include N uplink channel propagation paths, and each uplink channel propagation path The measurement results include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, and the propagation of each uplink channel The uplink received power corresponding to the path.

In another possible design solution, the positioning measurement device can be a terminal device, and the positioning calculation device can be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, the downlink arrival angle corresponding to each downlink channel propagation path, and each downlink channel The downlink received power corresponding to the propagation path.

In a possible design solution, before performing S301, the positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal device, the communication method shown in FIG. 3 may further include: the positioning calculation device sends the positioning measurement device The first request is sent, and the positioning measurement device receives the first request from the positioning calculation device. Among them, the first request is used to request the measurement results of the N channel propagation paths of the terminal device.

The first request may be determined according to the first capability information, and the first capability information is used to indicate the positioning measurement capability of the positioning measurement device, such as whether to support multipath measurement result reporting. In this way, the positioning computing device can allocate measurement tasks within its capacity to the positioning measurement device according to the first capability information, and/or customize the report content.

For example, if the load of the positioning calculation device is heavier and the load of the positioning measurement device is light, the positioning measurement device can be instructed to report only the measurement results of the N channel propagation paths, or only report part of the channel impulse response, so as to reduce the positioning calculation equipment Workload. Or, conversely, if the load of the positioning measurement device is heavier and the load of the positioning calculation device is lighter, the positioning and measurement device can be instructed to report the complete channel impulse response and not report the measurement results of the N channel propagation paths, so as to reduce The workload of positioning and measuring equipment.

Optionally, before the positioning calculation device sends the first request to the positioning measurement device, and the positioning measurement device receives the first request from the positioning calculation device, the communication method shown in FIG. 3 may further include: The computing device sends the first capability information, and the positioning computing device receives the first capability information.

Further, before the above-mentioned positioning measurement device sends the first capability information to the positioning calculation device, and the positioning calculation device receives the first capability information, the communication method shown in FIG. 3 may further include: the positioning calculation device sends a second request, and the positioning calculation device sends a second request. The measuring device receives the second request from the positioning computing device. Wherein, the second request is used to request the first capability information. That is, the positioning measurement device may send the first capability information after receiving the second request.

It should be understood that the positioning measurement device may also actively send the first capability information. For example, if the positioning measurement device is a terminal device, the terminal device can actively report the first capability information to the access network device and/or the core network device, such as in the registration process. For another example, if the positioning measurement device is an access network device, the access network device can actively report the first capability information to the core network device, for example, when the access network device is started. The embodiment of the present application does not specifically limit the implementation manner of reporting the first capability information.

It should be noted that the positioning calculation device may also obtain the first capability information from other devices except the positioning measurement device. For example, if the positioning measurement device is an access network device, and the positioning computing device is a core network device, the core network device can also store network elements centrally, such as unified data repository (UDR) network elements, and unified data management ( The unified data management (UDM) network element obtains the first capability information of the access network equipment. For another example, if the positioning measurement device is a terminal device and the positioning calculation device is a core network device, the core network device may also obtain the first capability information from the access network device. For another example, if the positioning measurement device is a terminal device and the positioning calculation device is a target access network device, the target access network device may also obtain the first capability information from the core network device or the source access network device. The embodiment of this application does not specifically limit the source of the first capability information.

Further, the original requestor of the above-mentioned positioning measurement task may be a positioning computing device or other devices, which is not specifically limited in the embodiment of the present application. For example, the positioning computing device is a core network device, and the original requestor of the positioning measurement task can be a core network device, a terminal device or an application server deployed by a third party, or another terminal device that needs to know the location of the terminal device. For another example, the positioning computing device is an access network device, and the original requestor of the positioning measurement task can be the access network device itself, or it can be a core network device, a terminal device, an application server deployed by a third party, or the terminal device that needs to know about it. The location of another terminal device.

S302: The positioning measurement device sends a first message to the positioning calculation device, and the positioning calculation device receives the first message from the positioning measurement device.

The first message includes the channel impulse response described in S301 or the measurement result of the N channel propagation paths of the terminal device.

In a possible design solution, the positioning measurement device may be an access network device, and the positioning calculation device may be a core network device or a terminal device. Correspondingly, in the above S302, the positioning measurement device sends the first message to the positioning calculation device, and the positioning calculation device receives the first message from the positioning measurement device, which may include:

The access network device sends the first message to the core network device or the terminal device, and the core network device or the terminal device receives the first message from the access network device.

In this way, the core network device or the terminal device can determine the location of the terminal device based on the measurement results of the N channel propagation paths, that is, perform the following S303.

In another possible design solution, the positioning measurement device may be a terminal device, and the positioning calculation device may be a core network device or an access network device. Correspondingly, in the above S302, the positioning measurement device sends the first message to the positioning calculation device, and the positioning calculation device receives the first message from the positioning measurement device, which may include:

The terminal device sends the first message to the core network device or the access network device, and the core network device or the access network device receives the first message from the terminal device.

In this way, the core network device or the access network device can determine the location of the terminal device based on the measurement results of the N channel propagation paths, that is, perform the following S303.

It should be noted that the operation of determining the measurement results of the N channel propagation paths according to the channel impulse response described in the above S301 can be performed by the positioning measurement device in the above S301, or by the positioning calculation device before the following S303. implement. When this operation is performed by the positioning computing device, the first message in S302 may include the channel impulse response, and does not include the measurement results of the N channel propagation paths. Correspondingly, after performing S302, the positioning calculation device may first perform the operation of determining the measurement results of the N channel propagation paths according to the channel impulse response described in S301, and then perform the following S303.

S303: The positioning calculation device determines the location of the terminal device according to the measurement results of the N channel propagation paths.

In a possible design solution, in the foregoing S303, the positioning calculation device determines the position of the terminal device according to the measurement results of the N channel propagation paths, which may include the following S303-1 to S303-3:

S303-1: Determine multiple candidate positions according to the measurement results of the N channel propagation paths.

Specifically, a candidate position can be determined based on all measurement results corresponding to a channel propagation path, or it can be determined separately based on one or more individual measurement results in the measurement results of a channel propagation path, such as arrival time or angle of arrival. To determine a candidate position, a set of one or more individual measurement results in the measurement results of a channel propagation path, such as time of arrival + angle of arrival, may be used to determine a candidate position respectively. That is to say, the channel propagation path and the candidate position may have a one-to-one correspondence, or one channel propagation path may correspond to multiple candidate positions. The embodiment of the present application does not specifically limit the correspondence between the channel propagation path and the candidate position.

S303-2: Determine the weighting values of multiple candidate positions according to the weighting factors of the measurement results of the N channel propagation paths.

Exemplarily, the weighting factors of candidate positions corresponding to the N channel propagation paths can be determined according to the measurement results of the N channel propagation paths used by the positioning algorithm, and the weighting factors corresponding to the candidate positions correspond to all channel propagation paths. The ratio of the sum of the weighting factors of is determined as the weighted value of the candidate position.

S303-3: Determine the weighted average of the multiple candidate locations as the location of the terminal device according to the weighted values of the multiple candidate locations.

In this way, the larger the value of the weighting factor, the higher the accuracy of a single measurement result, multiple measurement results, or all measurement results of a channel propagation path corresponding to the weighting factor. Therefore, when the same channel propagation path is used When multiple measurement results or measurement results of multiple channel propagation paths are used to locate terminal equipment, weighting factors can be used to further adjust the positioning results to eliminate or weaken the interference of unfavorable factors, thereby further improving the accuracy of the positioning results sex. Among them, the unfavorable factors may include one or more of the following: multipath propagation (such as reflection, refraction, scattering, etc.), rapid signal fading, and so on.

Specifically, the measurement results of the channel propagation path affected by one or more of the above-mentioned unfavorable factors may differ significantly from the measurement results of the channel propagation path that is not affected by one or more of the above-mentioned unfavorable factors. Deviations may be eliminated or given a smaller weight in the screening process in S303-1 to S303-3, and ultimately eliminate or weaken the adverse effects of the above-mentioned unfavorable factors on the positioning results.

Exemplarily, the arrival time of the propagation path of the reflection channel is longer than the arrival time of the propagation path of the direct channel, so that when sorting in descending order of the arrival time, the order of the propagation path of the reflection channel is after the propagation path of the direct channel, then the reflection The weight of the channel propagation path is smaller than the weight of the direct channel propagation path, that is, the weight of the candidate position determined based on the measurement result of the reflected channel propagation path is smaller than the weight of the candidate position determined based on the measurement result of the direct channel propagation path. In this way, in the process of performing a weighted average operation on the above two candidate positions to determine the position of the terminal device, the adverse effects of the propagation path of the reflection channel can be weakened, thereby improving the positioning accuracy. Further, if the sequence number of the propagation path of the reflection channel is greater than the path number threshold, the propagation path of the reflection channel can be eliminated in the screening process, so that the adverse effects of the propagation path of the reflection channel can be eliminated, and the positioning accuracy can be further improved.

Exemplarily, in a direct-fire scenario, such as in the wilderness, the received power of the propagation path of the fast fading channel is less than the received power of the propagation path of the non-fast fading channel, so that the fast fading channel is sorted in descending order of received power. The order of the propagation path is after the propagation path of the non-fast fading channel, the weight of the propagation path of the fast fading channel is less than the weight of the propagation path of the non-fast fading channel, that is, the weight of the candidate position determined based on the measurement result of the fast fading channel propagation path is less than that of the non-fast fading channel. The weight of the candidate position determined by the measurement result of the propagation path of the fast fading channel. In this way, in the process of performing a weighted average operation on the above two candidate positions to determine the position of the terminal device, the bad influence of the propagation path of the fast fading channel can be weakened, thereby improving the positioning accuracy. Further, if the sequence number of the fast fading channel propagation path is greater than the path number threshold, the fast fading channel propagation path can be eliminated in the screening process, so that the adverse effects of the fast fading channel propagation path can be eliminated, and the positioning accuracy can be further improved.

In the embodiment of the present application, the above-mentioned positioning measurement device and the positioning calculation device may be different devices, or may be the same device. In the case of the same device, the interaction between the positioning measurement device and the positioning calculation device, such as the above S302, can be regarded as the internal operation of the same device. For example, the same device can be a terminal device. The terminal device can filter out the measurement results of N downlink channel propagation paths from the downlink channel impulse response, and determine the terminal device based on the selected N downlink channel propagation path measurement results The location is then reported to the network, such as core network equipment, and/or, access network equipment.

In the embodiment of the present application, the communication method shown in FIG. 3 above may be implemented based on an uplink reference signal, that is, an uplink solution, or may be implemented based on a downlink reference signal, that is, an uplink solution. They are explained separately below.

In the uplink scheme, the reference signal is an uplink reference signal sent by a terminal device, the positioning calculation device can be a core network device or a terminal device, the positioning measurement device is an access network device, and the N channel propagation paths include N uplink channel propagation paths. The measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: the uplink time of arrival (UL-TOA) corresponding to each uplink channel propagation path, each The uplink angle of arrival (UL-AOA) corresponding to each uplink channel propagation path, and the uplink received power (uplink received power) corresponding to each uplink channel propagation path.

Among them, the uplink channel impulse response refers to the channel impulse response obtained by the access network device according to the uplink reference signal received from the terminal device. The measurement results of the N uplink channel propagation paths are selected from the uplink channel impulse response. .

Regarding the specific implementation of the uplink solution, reference may be made to the communication method shown in FIG. 4 below, which will not be repeated here.

In the downlink scheme, the reference signal is a downlink reference signal sent by an access network device, and the positioning calculation device can be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, and the downlink angle of arrival corresponding to each downlink channel propagation path. , DL-AOA), the downlink received power corresponding to each downlink channel propagation path (downlink received power).

Among them, the downlink channel impulse response refers to the channel impulse response obtained by the terminal device according to the downlink reference signal received from the access network device. The measurement results of the N downlink channel propagation paths are filtered from the downlink channel impulse response .

Regarding the specific implementation of the downlink solution, reference may be made to the communication method shown in FIG. 5 below, which will not be repeated here.

The uplink scheme and the downlink scheme of the communication method shown in Fig. 3 will be described in detail below with reference to Fig. 4 or Fig. 5 respectively.

Exemplarily, FIG. 4 is a second schematic diagram of the flow of the communication method provided by an embodiment of this application. Wherein, the positioning calculation device shown in FIG. 3 may be the core network device or terminal device shown in FIG. 4, and the positioning measurement device shown in FIG. 3 may be the access network device shown in FIG. 4 equipment. The following takes the positioning computing device and the requesting party of the positioning measurement task as the core network device as an example for detailed description.

As shown in Fig. 4, the communication method includes the following steps S401-S404:

S401: The terminal device sends an uplink reference signal to the access network device, and the access network device receives the uplink reference signal from the terminal device.

Wherein, the uplink reference signal may be an SRS, or may be another uplink measurement signal sent by a terminal device for the purpose of positioning the terminal device, which is not specifically limited in the embodiment of the present application.

In a possible design solution, the terminal device in the foregoing S401 may actively send the uplink reference signal on a pre-configured or predefined uplink resource (such as a resource in an uplink resource pool).

Optionally, the terminal device actively sends an uplink reference signal to the access network device, which can be regarded as the terminal device simultaneously sending a positioning measurement task request to the access network device. Among them, the positioning measurement task request is used to request the measurement results of the N uplink channel propagation paths. For the specific content of the measurement results of the propagation paths of the N uplink channels, reference may be made to the following S402, which will not be repeated here.

It should be understood that the terminal device may also send a positioning measurement task request to the access network device first, and then send the uplink reference signal to the access network device. The embodiment of the present application does not make any limitation on the specific implementation manner of how the terminal device sends the positioning measurement task request and the uplink reference signal to the access network device.

In another possible design solution, in S401, the terminal device sending the uplink reference signal to the access network device may be that the access network device receives the first request from the following core network device, and according to the first request It is executed after instructing the terminal equipment to send the uplink reference signal. That is to say, before performing the above S401, the communication method shown in FIG. 4 may further include the following S401-1 to S401-2:

S401-1: The core network device sends a first request to the access network device, and the access network device receives the first request from the core network device.

Wherein, the first request is used to request measurement results of N uplink channel propagation paths or uplink channel impulse responses. Regarding the specific content of the measurement results of the propagation paths of the N uplink channels, reference may be made to the following S402, which will not be repeated here.

S401-2: The access network device sends the configuration information of the uplink reference signal to the terminal device, and the terminal device receives the configuration information of the uplink reference signal from the access network device.

Wherein, the configuration information of the uplink reference signal is used to instruct the terminal equipment to send the uplink reference signal, and the configuration information of the uplink reference signal may include one or more of the following: identification information of the uplink reference signal, and time-frequency resources used to send the uplink reference signal Indication information, uplink transmission power, etc.

It should be noted that the original requestor of the first request involved in S401-1 may be the following core network equipment, or other equipment that needs to know the location of the terminal equipment, such as another terminal equipment or a third party The deployed application server, etc., are not specifically limited in the embodiment of the present application.

In addition, the terminal device can periodically send the uplink reference signal, or can send a specified number of uplink reference signals within a time period specified by the access network device, as long as it can meet the requirements of the positioning measurement task. There is no specific limitation.

Further, the content of the foregoing first request may be determined by the core network device according to the positioning measurement capability of the access network device, that is, the first capability information described in S301. In this way, the core network device can allocate measurement tasks within its capacity to the access network device according to the first capability information, and/or customize the report content. For specific implementation, refer to the relevant description of the first capability information in S301, which will not be repeated here.

Optionally, the core network device may obtain the first capability information of the access network device from the access network device or other core network devices. For specific implementation, please refer to the related content of the first capability information in S301, which will not be omitted here. Go into details.

It should be noted that when the core network device obtains the first capability information from the access network device, the content of the second request and the first capability information in the foregoing S301 may be carried in the NRPPa message. For example, the second request may be an E-CID measurement initialization request (E-CID measurement initiation request) message, and the first capability information may be carried in an E-CID measurement initialization response (E-CID measurement initiation response) message.

S402: The access network device obtains the measurement results of the N uplink channel propagation paths of the terminal device.

Exemplarily, the access network device obtains the uplink channel impulse response according to the uplink reference signal received from the terminal device, such as the SRS in S401, and then determines the measurement results of the N uplink channel propagation paths according to the uplink channel impulse response.

Among them, the measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, and the uplink corresponding to each uplink channel propagation path. The angle of arrival, the uplink received power corresponding to each uplink channel propagation path.

The above uplink arrival time may include relative time of arrival (RTOA) or uplink time difference of arrival (UL-TDOA). The uplink angle of arrival (UL-AOA) refers to the connection The angle between the incoming wave direction of the uplink reference signal received by the network equipment from the terminal equipment and true north, such as the angle between the uplink-beam ID receiving the uplink reference signal and true north, the uplink received power refers to the connection The power of the uplink reference signal received by the network-connected device can include the RSRP, RSRQ, RSSI, SINR, SNR, etc. of the uplink reference signal. The identification of the uplink channel propagation path can be determined according to the uplink arrival time or the uplink received power. For specific implementation, please refer to The relevant content of determining the identification of the channel propagation path according to the received power and/or the arrival time in the above S303 will not be repeated here.

In a possible design solution, the foregoing measurement results of determining N uplink channel propagation paths according to the uplink channel impulse response may include the following S402-1 and S402-2:

S402-1: Filter out N uplink channel propagation paths from the uplink channel impulse response.

Among them, the N uplink channel propagation paths can be any of the following, that is, N uplink channel propagation paths can be screened from the uplink channel impulse response according to one of the following screening methods:

Screening method 6, N uplink channel propagation paths with the largest uplink received power in the uplink channel impulse response; or,

Screening method 7, the N uplink channel propagation paths with the smallest uplink arrival time in the uplink channel impulse response; or,

Screening method 8, N uplink channel propagation paths with the smallest uplink arrival time and uplink received power greater than or equal to the first uplink power threshold in the uplink channel impulse response; or,

Screening method 9, N uplink channel propagation paths in the uplink channel impulse response that have the smallest uplink arrival time and the sum of the uplink received power is greater than or equal to the second uplink power threshold; or,

Screening method 10: N uplink channel propagation paths in the uplink channel impulse response that have the smallest uplink arrival time, the uplink received power is greater than or equal to the third uplink power threshold, and the sum of the uplink received power is greater than or equal to the fourth uplink power threshold.

Among them, the specific implementation of screening mode 6-screening mode 10 may refer to screening mode 1-screening mode 5 in the above S301-1 respectively, which will not be repeated here.

The uplink power, the first uplink power threshold, the second uplink power threshold, the third uplink power threshold, and the fourth uplink power threshold may include one or more of the following uplink reference signals: RSRP, RSRQ, RSSI, SINR, SNR, etc., the uplink arrival time may be the time at which the uplink reference signal reaches the access network device, and the uplink arrival angle may be the angle at which the uplink reference signal reaches the access network device.

It should be noted that N is a threshold for the number of uplink paths, and the number of propagation paths for the above N uplink channels may be less than or equal to the threshold for the number of uplink paths to reduce the amount of data reported by the access network device, thereby further improving the positioning efficiency. It should be understood that the uplink path quantity threshold used in the above-mentioned screening method 6-screening method 10 may be the same or different, which is not specifically limited in the embodiment of the present application.

In this way, N uplink channel propagation paths can be screened out from the uplink channel impulse response based on the uplink received power and/or uplink arrival time, and then based on the received data corresponding to each uplink channel propagation path, the propagation of each uplink channel can be determined Other content in the measurement result of the path, such as the uplink arrival angle, etc., so as to realize the binding of the measurement result of the uplink channel propagation path with the uplink channel propagation path.

S402-2: Determine measurement results of N uplink channel propagation paths.

Specifically, for each of the N uplink channel propagation paths, various measurement results other than one or more measurement results involved in the screening operation can be obtained. Taking screening method 6 as an example, assuming that a total of 5 uplink channel propagation paths are screened out based on the uplink received power, each uplink channel propagation path can be obtained from the uplink channel impulse response for each of the 5 uplink channel propagation paths. The upstream arrival time and upstream arrival angle of the propagation path of the two upstream channels.

Further, in order to facilitate the distinction between different uplink channel propagation paths, an identifier may be set for each uplink channel propagation path in the uplink channel impulse response. Among them, the identification of each uplink channel propagation path can be set based on the uplink received power or the uplink arrival time. The following is an example.

Optionally, the identification of each uplink channel propagation path may be a sequence number in which the uplink channel propagation path in the uplink channel impulse response is sorted according to the order of uplink received power, and the sequence number corresponds to the uplink channel. The uplink arrival time and the uplink arrival angle of the uplink channel propagation path corresponding to the received power are bound together with the sequence number as the measurement result of the uplink channel propagation path corresponding to the uplink received power corresponding to the sequence number.

Or, optionally, the identification of each uplink channel propagation path may be a sequence number obtained by sorting the uplink channel propagation path in the uplink channel impulse response according to the uplink arrival time from smallest to largest, and the sequence number corresponds to The uplink received power and the uplink angle of arrival of the uplink channel propagation path corresponding to the uplink arrival time are bound with the sequence number as the measurement result of the uplink channel propagation path corresponding to the uplink arrival time corresponding to the sequence number.

In this way, N uplink channel propagation paths can be selected from the uplink channel impulse response based on the uplink received power and/or uplink arrival time, and then each uplink channel impulse response can be obtained from the uplink channel impulse response based on each uplink channel propagation path. Other uplink measurement results corresponding to the channel propagation path, such as the uplink arrival angle, so as to realize the binding of the uplink measurement result with the uplink channel propagation path.

Furthermore, the measurement result of each of the above-mentioned uplink channel propagation paths may also include an uplink weighting factor, and the uplink weighting factor may include one or more of the following: uplink arrival time weighting factor, uplink arrival angle weighting factor, uplink power weighting factor, Or uplink path weighting factor. Among them, the uplink arrival time weighting factor is negatively related to the value of the uplink arrival time; the uplink arrival time weighting factor is positively related to the bandwidth occupied by the uplink reference signal; the uplink power weighting factor is positively related to the value of the uplink received power; the uplink power weighting factor is positively related to the uplink The value of the uplink transmit power of the reference signal is positively correlated; the uplink power weighting factor is negatively related to the value of the center frequency or frequency band of the uplink reference signal; the uplink angle of arrival weighting factor is positively related to the number of uplink receiving antennas; the uplink path weighting factor is as follows One or more positive correlations: uplink arrival time weighting factor, uplink arrival angle weighting factor, or uplink power weighting factor. For specific implementation, please refer to the relevant content of the weighting factor in S301, which will not be repeated here.

S403: The access network device sends a first message to the core network device, and the core network device receives the first message from the access network device.

In a possible design solution, the first message includes the measurement results of the N uplink channel propagation paths described in S402. For the specific content of the measurement results of the N uplink channel propagation paths, please refer to S402, which will not be repeated here. .

In this way, the core network device or the terminal device can determine the location of the terminal device based on the measurement results of the N uplink channel propagation paths, that is, perform the following S404.

In another possible design solution, the first message may also include the uplink channel impulse response, and does not include the measurement results of the N uplink channel propagation paths. Correspondingly, the operation of "determining the measurement results of N uplink channel propagation paths according to the uplink channel impulse response" in the foregoing S402 can be performed by the core network device before the following S404, and will not be repeated here.

It should be noted that the content of the first message, that is, the content reported by the access network device may be determined by the core network device according to the first capability information of the access network device. For specific implementation, refer to the second request and the first request in S401. The relevant content of the capability information will not be repeated here.

S404: The core network device determines the location of the terminal device according to the measurement results of the propagation paths of the N uplink channels.

In a possible design solution, in the foregoing S404, the core network device determines the location of the terminal device according to the measurement results of the N uplink channel propagation paths, which may include the following S404-1 to S404-3:

S404-1: Determine multiple candidate positions according to the measurement results of the N uplink channel propagation paths.

Specifically, a candidate position can be determined based on all the measurement results corresponding to an uplink channel propagation path, or the same single measurement result of multiple uplink channel propagation paths, such as the uplink arrival time and the uplink arrival time of an uplink channel propagation path. The uplink arrival time of another uplink channel propagation path can determine a candidate position. It can also be based on a collection of multiple individual measurement results of an uplink channel propagation path, for example, based on the uplink arrival time of the same uplink channel propagation path + uplink The angle of arrival determines a candidate position. That is to say, the uplink channel propagation path and the candidate position may have a one-to-one correspondence, or one uplink channel propagation path may correspond to multiple candidate positions. The embodiment of the present application does not specify the correspondence between the uplink channel propagation path and the candidate position. limited.

S404-2: Determine uplink weights of multiple candidate locations according to the weighting factors of the measurement results of the N uplink channel propagation paths.

Exemplarily, the weighting factors of candidate positions corresponding to N uplink channel propagation paths can be determined according to the uplink measurement results used by the positioning algorithm, and the weighting factors corresponding to the candidate positions can be combined with the weighting factors corresponding to all uplink channel propagation paths. The ratio of the sum is determined as the upward weighted value of the candidate position.

S404-3: Determine an uplink weighted average value of the multiple candidate locations as the location of the terminal device according to the uplink weight values of the multiple candidate locations.

In this way, the larger the value of the uplink weighting factor, the higher the accuracy of some or all of the measurement results of the uplink channel propagation path corresponding to the uplink weighting factor. Therefore, when different individual measurement results of the same uplink channel propagation path are used, Or when the measurement results of different uplink channel propagation paths are used to locate the terminal device, the uplink weighting factor can be used to further adjust the positioning result to further improve the accuracy of the positioning result.

It should be noted that the communication method shown in FIG. 4 is described by taking the core network device as the positioning computing device and the requesting party of the positioning measurement task as an example. It should be understood that, in the uplink solution, the requestor of the positioning calculation device and the positioning measurement task may also be a terminal device. Further, the positioning computing device and the requesting party of the positioning measurement task may be different devices or the same device. When the positioning measurement device and the positioning calculation device are the same device, the interaction between the positioning measurement device and the positioning calculation device can be regarded as the internal operation of the same device.

Exemplarily, Table 1 is an example of the correspondence relationship between the positioning computing device and the requester of the positioning measurement task in the uplink solution. As shown in Table 1, in the uplink scheme, the sender of the uplink reference signal is a terminal device, the performer of the uplink measurement task is the access network device, and the requester of the positioning measurement task is also determined in a specific application scenario. In practical applications, different positioning computing devices can be flexibly selected according to different scenarios, such as the load situation of core network equipment, the positioning measurement capability and/or load situation of terminal equipment, and the positioning capability and/or load situation of access network equipment , Flexible choice of positioning computing equipment. For example, for the three solutions with sequence numbers 1, 4, and 7 shown in Table 1, the positioning computing device may be a core network device, an access network device, or a terminal device, respectively.

Table 1

Exemplarily, FIG. 5 is a third schematic flowchart of a communication method provided by an embodiment of this application. The positioning calculation device shown in FIG. 3 may be the core network device or the access network device shown in FIG. 5, and the positioning measurement device shown in FIG. 3 may be the terminal shown in FIG. 5 equipment. The following takes the positioning computing device and the requesting party of the positioning measurement task as the core network device as an example for detailed description.

As shown in Figure 5, the communication method includes the following steps S501-S504:

S501: The access network device sends a downlink reference signal to the terminal device, and the terminal device receives the downlink reference signal from the access network device.

Wherein, the downlink reference signal may be, for example, CSI-RS or PRS, or may be other downlink measurement signals sent by the access network device for the purpose of terminal device positioning, which is not specifically limited in the embodiment of the present application.

Exemplarily, the access network device may send the downlink reference signal on a pre-configured or predefined downlink resource, or may first send the configuration information of the downlink reference signal to the terminal device, and then send the downlink reference signal to the terminal device. The embodiment of the present application does not make any limitation on the specific implementation manner of how the access network device sends the downlink reference signal to the terminal device.

In a possible design solution, the access network device sends a downlink reference signal to the terminal device, which may be when the access network device receives a first request from the following core network device, and sends it to the terminal device according to the first request: Downlink reference signal. That is to say, before performing the foregoing S501, the communication method shown in FIG. 5 may further include the following S501-1 to S501-2:

S501-1: The core network device sends a first request to the access network device, and the terminal device receives the first request from the core network device.

Wherein, the first request is used to request measurement results of N downlink channel propagation paths or downlink channel impulse responses. Regarding the specific content of the measurement results of the propagation paths of the N downlink channels, reference may be made to the following S502, which will not be repeated here.

S501-2: The access network device sends a downlink measurement task request to the terminal device, and the terminal device receives the downlink measurement task request from the access network device.

Wherein, the downlink measurement task request includes the content of the first request.

Optionally, the downlink measurement task request may also include configuration information of the downlink reference signal. Wherein, the configuration information of the downlink reference signal is used to instruct the terminal equipment to receive the downlink reference signal, and the configuration information of the downlink reference signal may include one or more of the following: identification information of the downlink reference signal, and time-frequency resources used to receive the downlink reference signal The indication information, the downlink transmission power, etc., so that the terminal device receives the downlink reference signal from the access network device, and executes the following S502 according to the received downlink reference signal.

It should be understood that the configuration information of the first request and the downlink reference signal may also be sent separately, that is, the configuration information of the first request and the downlink reference signal are sent in two messages respectively. The embodiment of the present application does not specifically limit the sending mode of the configuration information of the first request and the downlink reference signal.

It should be noted that the original requestor of the first request involved in S501-1 may be the following core network equipment, or other equipment that needs to know the location of the terminal equipment, such as another terminal equipment or a third party The deployed application server, etc., are not specifically limited in the embodiment of the present application.

Further, the content of the foregoing first request may be determined by the core network device according to the positioning measurement capability of the terminal device, that is, the first capability information described in S301. In this way, the core network device can allocate measurement tasks within its capacity to the terminal device according to the first capability information, and/or customize the report content. For specific implementation, please refer to the relevant content of the first capability information in S301, which will not be repeated here.

Optionally, the core network device may obtain the first capability information of the terminal device from the terminal device or the access network device. For specific implementation, please refer to the related content of the second request in S301, which will not be repeated here.

It should be noted that when the core network device obtains the first capability information from the terminal device, the content of the first request, the content of the second request, and the first capability information may be carried in the LTE positioning protocol (LTE positioning protocol, LPP) In the news. For example, the first request and the second request may be LPP E-CID capabilities request (LPP E-CID capabilities request) messages, and the first capability information may be carried in LPP E-CID measurement capabilities (E-CID measurement provides capabilities) messages middle.

S502: The terminal device obtains measurement results of the N downlink channel propagation paths of the terminal device.

Exemplarily, the terminal device obtains the downlink channel impulse response according to the downlink reference signal received from the access network device, such as PRS or CSI-RS in S501, and then determines N downlink channel propagation paths according to the downlink channel impulse response Measurement results.

Among them, the measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, and the downlink corresponding to each downlink channel propagation path The angle of arrival, the downlink received power corresponding to each downlink channel propagation path.

The aforementioned downlink arrival time may include the downlink time of arrival (DL-TOA) or the downlink time difference of arrival (DL-TDOA). The downlink angle of arrival (DL-AOA) refers to The angle between the direction of arrival of the downlink reference signal received by the terminal device from the access network device and true north, such as the downlink arrival angle corresponding to the downlink-beam ID used for the received downlink reference signal, and the downlink received power Refers to the power of the downlink reference signal received by the terminal equipment, which can include the RSRP, RSRQ, RSSI, SINR, etc. of the downlink reference signal. The identification of the downlink channel propagation path can be determined according to the downlink arrival time and/or the downlink received power. The specific implementation can be Refer to the implementation manner of determining the identification of the channel propagation path according to the received power and/or the time of arrival in S303, which will not be repeated here.

In a possible design solution, the foregoing measurement results of determining N downlink channel propagation paths according to the downlink channel impulse response may include the following S502-1 and S502-2:

S502-1: Filter out N downlink channel propagation paths from the downlink channel impulse response.

Among them, the N downlink channel propagation paths can be any of the following, that is, N downlink channel propagation paths can be screened from the downlink channel impulse response according to one of the following screening methods:

Screening method 11, the N downlink channel propagation paths with the largest downlink received power in the downlink channel impulse response; or,

Screening method 12, the N downlink channel propagation paths with the smallest downlink reach time in the downlink channel impulse response; or,

Screening method 13, N downlink channel propagation paths in the downlink channel impulse response that have the smallest downlink arrival time and the downlink received power is greater than or equal to the first downlink power threshold; or,

Screening method 14, N downlink channel propagation paths in the downlink channel impulse response that have the smallest downlink reach time and the sum of downlink received power is greater than or equal to the second downlink power threshold; or,

Screening method 15, N downlink channel propagation paths with the smallest downlink arrival time, downlink received power greater than or equal to the third downlink power threshold, and the sum of downlink received power greater than or equal to the fourth downlink power threshold in the downlink channel impulse response.

Among them, the specific implementation of the screening method 11 to the screening method 15 can refer to the screening method 1 to the screening method 5 in the above S301-1 respectively, which will not be repeated here.

The foregoing downlink received power, first downlink power threshold, second downlink power threshold, third downlink power threshold, and fourth downlink power threshold may include one or more of the following downlink reference signals: RSRP, RSRQ, RSSI, SINR, SNR, etc., the downlink arrival time may be the time when the downlink reference signal arrives at the terminal device, and the downlink arrival angle may be the angle at which the downlink reference signal arrives at the terminal device.

It should be noted that the number of the aforementioned N downlink channel propagation paths may be less than or equal to the number of downlink paths threshold, so as to reduce the amount of data reported by the terminal device, thereby further improving the positioning efficiency. It should be understood that the thresholds for the number of downlink paths used in the above screening method 11-screening method 15 may be the same or different, which is not specifically limited in the embodiment of the present application.

S502-2: Determine measurement results of N downlink channel propagation paths.

Specifically, for each of the N downlink channel propagation paths, various measurement results other than one or more measurement results involved in the screening operation can be obtained. Taking screening method 11 as an example, assuming that a total of 5 downlink channel propagation paths are screened out according to the downlink received power, for each of the 5 downlink channel propagation paths, the corresponding downlink channel impulse response can be obtained. Downstream arrival time, downstream arrival angle.

Optionally, in order to facilitate the distinction between different downlink channel propagation paths, an identifier may be set for each downlink channel propagation path in the downlink channel impulse response. The identification of each downlink channel propagation path can be set based on downlink received power or downlink arrival time. The following is an example.

Optionally, the identification of each downlink channel propagation path may be a sequence number in which the downlink channel propagation paths in the downlink channel impulse response are sorted in descending order of downlink received power, and the sequence number corresponds to the downlink channel propagation path. The downlink arrival time and downlink arrival angle of the downlink channel propagation path corresponding to the received power are bound with the sequence number as the measurement result of the downlink channel propagation path corresponding to the downlink received power corresponding to the sequence number.

Or, optionally, the identification of each downlink channel propagation path may be a sequence number in which the downlink channel propagation path in the downlink channel impulse response is sorted in descending order of the downlink arrival time, and the sequence number corresponds to The downlink received power and the downlink angle of arrival of the downlink channel propagation path corresponding to the downlink arrival time are bound with the sequence number as the measurement result of the downlink channel propagation path corresponding to the downlink arrival time corresponding to the sequence number.

In this way, N downlink channel propagation paths can be screened out from the downlink channel impulse response based on downlink received power and/or downlink arrival time, and then other measurements corresponding to each downlink channel propagation path can be obtained from the downlink channel impulse response. As a result, the following travel angle of arrival is achieved, thereby realizing the binding of the downlink measurement result with the downlink channel propagation path.

Further, the measurement result of each of the aforementioned downlink channel propagation paths may also include a downlink weighting factor, and the downlink weighting factor may include one or more of the following: downlink arrival time weighting factor, downlink arrival angle weighting factor, downlink power weighting factor, or Downlink path weighting factor. Among them, the downlink arrival time weighting factor is negatively related to the value of the downlink arrival time; the downlink arrival time weighting factor is positively related to the bandwidth occupied by the downlink reference signal; the downlink power weighting factor is positively related to the value of the downlink received power; the downlink power weighting factor is positively related to the downlink The value of the downlink transmit power of the reference signal is positively correlated; the downlink power weighting factor is negatively related to the value of the center frequency or frequency band of the transmission of the downlink reference signal; the downlink angle of arrival weighting factor is positively related to the number of downlink receiving antennas; the downlink path weighting factor is as follows One or more positive correlations: downlink arrival time weighting factor, downlink arrival angle weighting factor, or downlink power weighting factor. For specific implementation, please refer to the relevant content of the weighting factor in S301, which will not be repeated here.

S503: The terminal device sends a first message to the core network device, and the core network device receives the first message from the terminal device.

The first message includes the measurement results of the N downlink channel propagation paths described in S502. For the specific content of the first message, refer to S502, which will not be repeated here.

In this way, the core network device or the access network device can determine the location of the terminal device based on the measurement results of the N downlink channel propagation paths, that is, perform the following S504.

Optionally, the first message may also include the downlink channel impulse response, and does not include the measurement results of the N downlink channel propagation paths. Correspondingly, the operation of "determining the measurement results of N downlink channel propagation paths according to the downlink channel impulse response" in the foregoing S502 can be performed by the core network device before performing the following S504, and will not be repeated here.

It should be noted that the content of the first message may be determined by the core network device according to the first capability information. For specific implementation, refer to the related content of the second request and the first capability information in S501, which will not be repeated here.

S504: The core network device determines the location of the terminal device according to the measurement results of the N downlink channel propagation paths.

In a possible design solution, in the foregoing S504, the core network device determines the position of the terminal device according to the measurement results of the N downlink channel propagation paths, which may include the following S504-1 to S504-3:

S504-1: Determine multiple candidate positions according to the measurement results of the propagation paths of the N downlink channels.

Specifically, a candidate location can be determined based on all measurement results corresponding to a downlink channel propagation path, or it can be based on the same single measurement result among the measurement results of multiple downlink channel propagation paths, for example, based on a downlink channel propagation path. The downlink arrival time and the downlink arrival time of another downlink channel propagation path determine a candidate location. It can also be based on a collection of multiple individual measurement results of a downlink channel propagation path, such as the downlink arrival time of the same downlink channel propagation path. Time + downward arrival angle to determine a candidate location. That is to say, the downlink channel propagation path and the candidate position can have a one-to-one correspondence, or one downlink channel propagation path can correspond to multiple candidate positions. The embodiment of the present application does not specify the correspondence between the downlink channel propagation path and the candidate position. limited.

S504-2: Determine downlink weights of multiple candidate locations according to the weighting factors of the measurement results of the N downlink channel propagation paths.

Exemplarily, the weighting factors of the measurement results of the N downlink channel propagation paths can be determined according to the positioning measurement results used by the positioning algorithm, and the weighting factors corresponding to the downlink channel propagation paths of a certain candidate position can be determined with all the weighting factors. The ratio of the sum of the weighting factors corresponding to the propagation path of the downlink channel is determined as the downlink weighting value of the candidate position.

S504-3: Determine the downlink weighted average of the multiple candidate locations as the location of the terminal device according to the downlink weight values of the multiple candidate locations.

In this way, the larger the value of the downlink weighting factor, the higher the accuracy of some or all of the measurement results of the downlink channel propagation path corresponding to the downlink weighting factor. Therefore, when different measurement results of the same downlink channel propagation path are used, or When using the measurement results of different downlink channel propagation paths to locate the terminal device, the downlink weighting factor can be used to further adjust the positioning result to further improve the accuracy of the positioning result.

It should be noted that the communication method shown in FIG. 5 is described by taking the core network device as the positioning computing device and the requesting party of the positioning measurement task as an example. It should be understood that, in the downlink solution, the requestor of the positioning calculation device and the positioning measurement task may also be a terminal device. Further, the positioning computing device and the requesting party of the positioning measurement task may be different devices or the same device. When the positioning measurement device and the positioning calculation device are the same device, the interaction between the positioning measurement device and the positioning calculation device can be regarded as the internal operation of the same device.

Table 2

Exemplarily, Table 2 is an example of the correspondence relationship between the positioning computing device and the requester of the positioning measurement task in the downlink solution. As shown in Table 2, in the downlink solution, the downlink reference signal sender is the access network device, the downlink measurement task executor is the terminal device, and the requester of the positioning measurement task is also determined in specific application scenarios. In practical applications, different positioning computing devices can be flexibly selected according to different scenarios. For example, it can be based on the load situation of core network equipment, the positioning ability and/or load situation of terminal equipment, and the positioning ability and/or load situation of access network equipment. Flexible choice of positioning computing equipment. For example, for the three optional solutions with sequence numbers 1, 4, and 7 shown in Table 2, the positioning computing device may be a core network device, an access network device, or a terminal device, respectively.

It should be noted that the communication methods shown in FIG. 4 and FIG. 5 can also be used in combination. For example, in a frequency division duplexing (FDD) scenario, because the working frequency bands of the uplink and downlink are different, the radio wave propagation characteristics of the uplink and downlink, such as the maximum propagation distance, attenuation speed, etc., will also be different. In order to avoid the inaccurate positioning measurement result caused by the difference in radio wave propagation characteristics when only the uplink or downlink scheme is used, the positioning result may be inaccurate, and the access network equipment and terminal equipment can be instructed to send in the same specified time period. Reference signal, and sum up the acquired channel impulse response or positioning measurement results, and then the positioning computing device, such as one of the core network device, the access network device, and the terminal device, determines the location of the terminal device.

In addition, after determining the location of the terminal device, the positioning computing device can report to devices that need to know the current location of the terminal device, such as the terminal device being located, the access network device, the application server deployed by a third party, and another device that needs to know the current location of the terminal device. Another terminal device that locates the location of the terminal device sends the location of the terminal device.

Based on the communication method shown in any one of Figures 3 to 5, the positioning measurement device can report the measurement results of the N channel propagation paths of the terminal device, such as arrival time, angle of arrival, or received power, that is, the reported N There is a binding relationship between the measurement results of two channel propagation paths and the N channel propagation paths, so that the positioning computing device can determine the position of the terminal device based on the measurement results bound to the channel propagation path, which can solve the problem of different types used in the positioning process. The measurement results, such as arrival time and angle of arrival, do not belong to the problem of poor positioning accuracy caused by the same channel propagation path, thereby improving the accuracy of the positioning results of the terminal equipment.

The communication method provided by the embodiment of the present application is described in detail above with reference to FIGS. 3 to 5. The communication device provided by the embodiment of the present application will be described in detail below with reference to FIGS. 6-7.

Exemplarily, FIG. 6 is a first structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 6, the communication device 600 includes: a processing module 601 and a transceiver module 602. For ease of description, FIG. 6 only shows the main components of the communication device.

In a possible design solution, the communication device 600 can be applied to the function of the positioning computing device in the communication system shown in FIG. 1 or FIG. 2, or the core network device or the core network device in the communication method shown in FIG. 4 The function of the terminal device, or the function of the core network device or the access network device in the communication method shown in FIG. 5.

Among them, the processing module 601 is used to obtain the measurement results of the N channel propagation paths of the terminal equipment, and the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: The arrival time corresponding to the path, the arrival angle corresponding to each channel propagation path, and the receiving power corresponding to each channel propagation path, N is a positive integer.

The transceiver module 602 is configured to send a first message to the positioning computing device; where the first message includes the measurement results of N channel propagation paths, and the measurement results of the N channel propagation paths are used to determine the location of the terminal device.

In a possible design solution, the processing module 601 is also used to obtain the channel impulse response; the processing module 601 is also used to determine the measurement results of the N channel propagation paths according to the channel impulse response.

Optionally, the processing module 601 is further configured to filter out N channel propagation paths from the channel impulse response, and determine the measurement results of the N channel propagation paths.

Furthermore, the measurement results of the N channel propagation paths may also include weighting factors, and the weighting factors may include one or more of the following: time-of-arrival weighting factor, angle-of-arrival weighting factor, power weighting factor, or path weighting factor. Among them, the arrival time weighting factor is negatively related to the value of the arrival time; the arrival time weighting factor is positively related to the bandwidth occupied by the reference signal; the power weighting factor is positively related to the value of the received power; the power weighting factor is positive to the value of the transmission power of the reference signal Correlation; the power weighting factor is negatively correlated with the value of the center frequency point or frequency band of the transmitted reference signal; the angle of arrival weighting factor is positively correlated with the number of receiving antennas; the path weighting factor is positively correlated with one or more of the following: arrival time weighting factor, arrival Angle weighting factor, or power weighting factor.

In a possible design solution, the communication device 600 may be an access network device, and the positioning calculation device may be a core network device or a terminal device. The N channel propagation paths include N uplink channel propagation paths, and each uplink channel propagation path The measurement results include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, and the propagation of each uplink channel The uplink received power corresponding to the path. Correspondingly, the transceiver module 602 is also used for the access network device to send the first message to the core network device or the terminal device.

In another possible design solution, the communication device 600 may be a terminal device, and the positioning calculation device may be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, the downlink arrival angle corresponding to each downlink channel propagation path, and each downlink channel The downlink received power corresponding to the propagation path. Correspondingly, the transceiver module 602 is also used for the terminal device to send the first message to the core network device or the access network device.

In a possible design solution, the transceiver module 602 is also used to receive a first request from a positioning computing device; where the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is Determined according to the first capability information, the first capability information is used to indicate the positioning measurement capability of the communication device 600.

Optionally, the transceiver module 602 is further configured to send the first capability information to the positioning computing device before receiving the first request from the positioning computing device.

Further, the transceiver module 602 is further configured to receive a second request from the positioning computing device before sending the first capability information to the positioning computing device; wherein, the second request is used to request the first capability information.

Optionally, the transceiver module 602 may include a receiving module and a sending module (not separately shown in FIG. 6). The receiving module 602 is used to perform the receiving function of the communication device 600, and the sending module is used to perform the sending function of the communication device 600. The embodiments of the present application do not make any limitation on the specific implementation of the transceiver function.

Optionally, the communication device 600 may further include a storage module (not shown in FIG. 6), and the storage module stores programs or instructions. When the processing 601 module executes the program or instruction, the communication device 600 can locate the function of the computing device in the communication method shown in FIG. 3, or the core network device or terminal device in the communication method shown in FIG. Function, or the function of the core network device or the access network device in the communication method shown in FIG. 5.

It should be noted that the communication device 600 may be a positioning measurement device, or may be provided in a chip (system) or other components or components of the positioning measurement device, which is not specifically limited in the embodiment of the present application. For example, in an uplink measurement solution, the communication device 600 may be an access network device. For another example, in a downlink measurement solution, the communication device 600 may be a terminal device.

In addition, the technical effect of the communication device 600 may refer to the technical effect of the communication method shown in any one of FIG. 3 to FIG. 5, which will not be repeated here.

In another possible design solution, the communication device 600 can also be applied to the communication system shown in FIG. 1 or FIG. 2 to perform the function of the positioning measurement device in the communication method shown in FIG. 3, or The function of the access network device in the communication method shown in 4, or the function of the terminal device in the communication method shown in FIG. 5.

Among them, the transceiver module 602 is used to receive a first message from a positioning measurement device; where the first message includes the channel impulse response or the measurement result of the N channel propagation paths of the terminal device, and the measurement result of each channel propagation path includes The identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, the receiving power corresponding to each channel propagation path, N is a positive integer .

The processing module 601 is configured to determine the location of the terminal device according to the measurement results of the N channel propagation paths.

In a possible design solution, the processing module 601 is further configured to determine the measurement results of the N channel propagation paths according to the channel impulse response.

In a possible design solution, the processing module 601 is further configured to perform the following steps: determine multiple candidate positions according to the measurement results of the N channel propagation paths; determine the weighting factors of the measurement results of the N channel propagation paths Weighted values of multiple candidate positions; according to the weighted values of multiple candidate positions, the weighted average of multiple candidate positions is determined as the position of the terminal device.

In a possible design solution, the positioning measurement device may be an access network device, the communication device 600 may be a core network device or a terminal device, the N channel propagation paths include N uplink channel propagation paths, and each uplink channel propagation path The measurement results include the identification of each uplink channel propagation path and one or more of the following information: the uplink arrival time corresponding to each uplink channel propagation path, the uplink arrival angle corresponding to each uplink channel propagation path, and the propagation of each uplink channel The uplink received power corresponding to the path. Correspondingly, the transceiver module 602 is also used for the core network device or the terminal device to receive the first message from the access network device.

In another possible design solution, the positioning measurement device may be a terminal device, and the communication device 600 may be a core network device or an access network device. The N channel propagation paths include N downlink channel propagation paths, and each downlink channel propagates The measurement result of the path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink arrival time corresponding to each downlink channel propagation path, the downlink arrival angle corresponding to each downlink channel propagation path, and each downlink channel The downlink received power corresponding to the propagation path. Correspondingly, the transceiver module 602 is also used for the core network device or the access network device to receive the first message from the terminal device.

In a possible design solution, the transceiver module 602 is also used to send a first request to the positioning measurement device; where the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on Determined by the first capability information, the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.

Optionally, the transceiver module 602 is further configured to receive the first capability information before sending the first request to the positioning measurement device.

Further, the transceiver module 602 is further configured to send a second request before receiving the first capability information; wherein, the second request is used to request the first capability information.

Optionally, the transceiver module 602 may include a receiving module and a sending module (not separately shown in FIG. 6). Among them, the receiving module is used to perform the receiving function of the communication device 600, and the sending module is used to perform the sending function of the communication device 600. The embodiments of the present application do not make any limitation on the specific implementation of the transceiver function.

Optionally, the communication device 600 may further include a storage module (not shown in FIG. 6), and the storage module stores programs or instructions. When the processing module 601 executes the program or instruction, the communication device 600 can perform the function of the positioning measurement device in the communication method shown in FIG. 3 or the function of the access network device in the communication method shown in FIG. 4 , Or the function of the terminal device in the communication method shown in Figure 5.

It should be noted that the communication device 600 may be a positioning computing device, or may be provided in a chip (system) or other components or components of the positioning computing device, which is not specifically limited in the embodiment of the present application. For example, in the uplink measurement solution, the communication device 600 may be a core network device or a terminal device. For another example, in a downlink measurement solution, the communication device 600 may be a core network device or an access network device.

Exemplarily, FIG. 7 is a second structural diagram of a communication device provided by an embodiment of this application. The communication device may be the above-mentioned positioning measurement equipment, positioning computing equipment, core network equipment, access network equipment, or terminal equipment, or it may be installed in the above-mentioned positioning measurement equipment, positioning computing equipment, core network equipment, and access network equipment. , Or the chip (system) or other components or components of the terminal device.

As shown in FIG. 7, the communication device 700 may include a processor 701. Optionally, the communication device 700 may further include a memory 702 and/or a transceiver 703. Wherein, the processor 701 is coupled with the memory 702 and the transceiver 703, for example, can be connected through a communication bus.

Hereinafter, each component of the communication device 700 will be specifically introduced with reference to FIG. 7:

Among them, the processor 701 is the control center of the communication device 700, which may be a processor or a collective term for multiple processing elements. For example, the processor 701 is one or more central processing units (CPU), or may be an application specific integrated circuit (ASIC), or may be configured to implement one or more of the embodiments of the present application. An integrated circuit, for example: one or more microprocessors (digital signal processors, DSP), or one or more field programmable gate arrays (FPGA).

Optionally, the processor 701 may execute various functions of the communication device 700 by running or executing a software program stored in the memory 702 and calling data stored in the memory 702.

In a specific implementation, as an embodiment, the processor 701 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 7.

In a specific implementation, as an embodiment, the communication device 700 may also include multiple processors, such as the processor 701 and the processor 704 shown in FIG. 2. Each of these processors can be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). The processor here may refer to one or more communication devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

Wherein, the memory 702 is used to store a software program that executes the solution of the present application, and is controlled to execute by the processor 701. For a specific implementation manner, reference may be made to the foregoing method embodiment, which will not be repeated here.

Optionally, the memory 702 may be a read-only memory (ROM) or other types of static storage communication devices that can store static information and instructions, a random access memory (RAM), or information that can store information. Other types of dynamic storage and communication devices with instructions can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or Other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage communication devices, or can be used to carry or store expectations in the form of instructions or data structures The program code and any other medium that can be accessed by the computer, but not limited to this. The memory 702 may be integrated with the processor 701, or may exist independently, and is coupled with the processor 701 through the input/output port (not shown in FIG. 7) of the communication device 700, which is not specifically limited in the embodiment of the present application.

The transceiver 703 is used for communication with other communication devices. For example, the communication device 700 may be a positioning measurement device, and the transceiver 703 may be used for the positioning measurement device to communicate with a positioning computing device, and/or to communicate with a requester of a positioning measurement task. For another example, the communication device 700 may be a positioning calculation device, and the transceiver 703 may be used for the positioning calculation device to communicate with the positioning measurement device, and/or to communicate with the requester of the positioning measurement task. For another example, the communication apparatus 700 may be a terminal device, and the transceiver 703 may be used for the terminal device to communicate with a network device, or to communicate with another terminal device. For another example, the communication device 700 is a network device, and the transceiver 703 may be used for the network device to communicate with a terminal device, or to communicate with another network device. Among them, the network device may be a core network device or an access network device.

Optionally, the transceiver 703 may include a receiver and a transmitter (not separately shown in FIG. 7). Among them, the receiver is used to realize the receiving function, and the transmitter is used to realize the sending function.

Optionally, the transceiver 703 may be integrated with the processor 701, or may exist independently, and is coupled with the processor 701 through the input/output port (not shown in FIG. 7) of the communication device 700. This is not specifically limited.

It should be noted that the structure of the communication device 700 shown in FIG. 7 does not constitute a limitation on the communication device. The actual communication device may include more or less components than those shown in the figure, or combine certain components, or Different component arrangements.

The embodiment of the application provides a communication system. The communication system includes positioning measurement equipment and positioning calculation equipment.

It should be understood that the processor in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

It should also be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of random access memory (RAM) are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (DRAM), and synchronous dynamic random access memory (DRAM). Access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

The foregoing embodiments may be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination. When implemented using software, the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part. 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 the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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 a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium may be a solid state drive.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships. For example, A and/or B can mean that A alone exists, and both A and B exist. , There are three cases of B alone, where A and B can be singular or plural. In addition, the character "/" in this text generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and/or" relationship, which can be understood with reference to the context.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "The following at least one item (a)" or similar expressions refers to any combination of these items, including any combination of a single item (a) or a plurality of items (a). For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A communication method, characterized in that it comprises:

The positioning measurement device obtains the measurement results of the N channel propagation paths of the terminal equipment, and the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: each channel propagation path The corresponding arrival time, the arrival angle corresponding to each channel propagation path, and the receiving power corresponding to each channel propagation path, where N is a positive integer;

The positioning measurement device sends a first message to the positioning calculation device; wherein, the first message includes the measurement results of the N channel propagation paths, and the measurement results of the N channel propagation paths are used to determine the terminal device s position.
The communication method according to claim 1, wherein the positioning measurement device acquiring the measurement results of the N channel propagation paths of the terminal device comprises:

Acquiring the channel impulse response by the positioning measurement device;

The positioning measurement device determines the measurement results of the N channel propagation paths according to the channel impulse response.
The communication method according to claim 2, wherein the positioning measurement device determining the measurement results of the N channel propagation paths according to the channel impulse response comprises:

The positioning measurement device screens out the N channel propagation paths from the channel impulse response;

The positioning measurement device determines the measurement results of the N channel propagation paths.
The communication method according to claim 3, wherein the N channel propagation paths are any one of the following:

N channel propagation paths with the largest received power in the channel impulse response; or,

N channel propagation paths with the smallest arrival time in the channel impulse response; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and whose received power is greater than or equal to the first power threshold; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and the sum of the received power is greater than or equal to the second power threshold; or,

In the channel impulse response, N channel propagation paths with the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold.
The communication method according to claim 3 or 4, wherein the identification of each channel propagation path is the result of sorting the channel propagation paths in the channel impulse response according to the received power from largest to smallest. Sequence number; or,

The identification of each channel propagation path is a sequence number obtained by sorting the channel propagation paths in the channel impulse response in descending order of arrival time.
The communication method according to any one of claims 1 to 5, wherein the measurement result of each channel propagation path further includes a weighting factor, and the weighting factor includes one or more of the following: time-of-arrival weighting Factor, angle of arrival weighting factor, power weighting factor, or path weighting factor; among them,

The arrival time weighting factor is negatively related to the value of the arrival time;

The time-of-arrival weighting factor is positively correlated with the bandwidth occupied by the reference signal;

The power weighting factor is positively correlated with the value of the received power;

The power weighting factor is positively correlated with the value of the transmission power of the reference signal;

The power weighting factor is negatively related to the value of the central frequency point or frequency band of the transmitted reference signal;

The angle of arrival weighting factor is positively correlated with the number of receiving antennas;

The path weighting factor is positively correlated with one or more of the following: the arrival time weighting factor, the arrival angle weighting factor, or the power weighting factor.
The communication method according to claim 6, wherein the measurement results of the N channel propagation paths are used to determine the position of the terminal device, comprising:

Determine multiple candidate positions according to the measurement results of the N channel propagation paths;

Determine the weighted values of the multiple candidate positions according to the weighting factors in the measurement results of the N channel propagation paths;

According to the weighted values of the multiple candidate positions, the weighted average of the multiple candidate positions is determined as the position of the terminal device.
The communication method according to any one of claims 1-7, wherein the positioning measurement device is an access network device, the positioning calculation device is a core network device or the terminal device, and the N The channel propagation path includes N uplink channel propagation paths, and the measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: Uplink arrival time, the uplink arrival angle corresponding to each uplink channel propagation path, and the uplink received power corresponding to each uplink channel propagation path;

The first message sent by the positioning measurement device to the positioning calculation device includes:

The access network device sends the first message to the core network device or the terminal device.
The communication method according to any one of claims 1-7, wherein the positioning measurement device is the terminal device, the positioning calculation device is a core network device or an access network device, and the N The channel propagation path includes N downlink channel propagation paths, and the measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: Downlink arrival time, downlink arrival angle corresponding to each downlink channel propagation path, and downlink reception power corresponding to each downlink channel propagation path;

The first message sent by the positioning measurement device to the positioning calculation device includes:

The terminal device sends the first message to the core network device or the access network device.
The communication method according to any one of claims 1-9, wherein the method further comprises:

The positioning measurement device receives a first request from the positioning calculation device; wherein, the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on the first request. If the capability information is determined, the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.
The communication method according to claim 10, wherein before the positioning measurement device receives the first request from the positioning calculation device, the method further comprises:

The positioning measurement device sends the first capability information to the positioning calculation device.
The communication method according to claim 11, wherein before the positioning measurement device sends the first capability information to the positioning calculation device, the method further comprises:

The positioning measurement device receives a second request from the positioning calculation device; wherein the second request is used to request the first capability information.
A communication method, characterized in that it comprises:

The positioning calculation device receives a first message from the positioning measurement device; wherein, the first message includes the channel impulse response or the measurement result of the N channel propagation paths of the terminal device, and the measurement result of each channel propagation path includes the The identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and the received power corresponding to each channel propagation path , N is a positive integer;

The positioning calculation device determines the location of the terminal device according to the measurement results of the N channel propagation paths.
The communication method according to claim 13, wherein the method further comprises:

The positioning calculation device determines the measurement results of the N channel propagation paths according to the channel impulse response.
The communication method according to claim 14, wherein the positioning calculation device determining the measurement results of the N channel propagation paths according to the impulse response of the channel comprises:

Selecting, by the positioning calculation device, the N channel propagation paths from the channel impulse response;

The positioning calculation device determines the measurement results of the N channel propagation paths.
The communication method according to any one of claims 13-15, wherein the N channel propagation paths are any one of the following:

N channel propagation paths with the largest received power in the channel impulse response; or,

N channel propagation paths with the smallest arrival time in the channel impulse response; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and whose received power is greater than or equal to the first power threshold; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and the sum of the received power is greater than or equal to the second power threshold; or,

In the channel impulse response, N channel propagation paths with the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold.
The communication method according to any one of claims 13-16, wherein the identification of each channel propagation path is a response to the channel propagation path in the channel impulse response in descending order of received power. The sequence number after sorting; or,

The identification of each channel propagation path is a sequence number obtained by sorting the channel propagation paths in the channel impulse response in descending order of arrival time.
The communication method according to any one of claims 13-17, wherein the measurement result of each channel propagation path further includes a weighting factor, and the weighting factor includes one or more of the following: time-of-arrival weighting Factor, angle of arrival weighting factor, power weighting factor, or path weighting factor; among them,

The arrival time weighting factor is negatively related to the value of the arrival time;

The time-of-arrival weighting factor is positively correlated with the bandwidth occupied by the reference signal;

The power weighting factor is positively correlated with the value of the received power;

The power weighting factor is positively correlated with the value of the transmission power of the reference signal;

The power weighting factor is negatively related to the value of the central frequency point or frequency band of the transmitted reference signal;

The angle of arrival weighting factor is positively correlated with the number of receiving antennas;

The path weighting factor is positively correlated with one or more of the following: the arrival time weighting factor, the arrival angle weighting factor, or the power weighting factor.
The communication method according to claim 18, wherein the positioning calculation device determining the position of the terminal device according to the measurement results of the N channel propagation paths comprises:

The positioning calculation device determines multiple candidate positions according to the measurement results of the N channel propagation paths;

Determining, by the positioning calculation device, the weighting values of the multiple candidate positions according to the weighting factors in the measurement results of the N channel propagation paths;

The positioning calculation device determines the weighted average of the multiple candidate locations as the location of the terminal device according to the weighted values of the multiple candidate locations.
The communication method according to any one of claims 13-19, wherein the positioning measurement device is an access network device, the positioning calculation device is a core network device or the terminal device, and the N The channel propagation path includes N uplink channel propagation paths, and the measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: Uplink arrival time, the uplink arrival angle corresponding to each uplink channel propagation path, and the uplink received power corresponding to each uplink channel propagation path;

The positioning calculation device receiving the first message from the positioning measurement device includes:

The core network device or the terminal device receives the first message from the access network device.
The communication method according to any one of claims 13-19, wherein the positioning measurement device is the terminal device, the positioning calculation device is a core network device or an access network device, and the N The channel propagation path includes N downlink channel propagation paths, and the measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: The downlink arrival time, the downlink arrival angle corresponding to each downlink channel propagation path, and the downlink received power corresponding to each downlink channel propagation path;

The positioning calculation device receiving the first message from the positioning measurement device includes:

The core network device or the access network device receives the first message from the terminal device.
The communication method according to any one of claims 13-21, wherein the method further comprises:

The positioning calculation device sends a first request to the positioning measurement device; wherein, the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on the first capability If the information is determined, the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.
The communication method according to claim 22, wherein before the positioning calculation device sends the first request to the positioning measurement device, the method further comprises:

The positioning computing device receives the first capability information.
The communication method according to claim 23, wherein before the positioning computing device receives the first capability information, the method further comprises:

The positioning computing device sends a second request; wherein, the second request is used to request the first capability information.
A communication device, characterized by comprising: a processing module and a transceiver module; wherein,

The processing module is configured to obtain the measurement results of the N channel propagation paths of the terminal equipment, and the measurement result of each channel propagation path includes the identification of each channel propagation path and one or more of the following information: The arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and the received power corresponding to each channel propagation path, where N is a positive integer;

The transceiver module is configured to send a first message to a positioning computing device; wherein, the first message includes measurement results of the N channel propagation paths, and the measurement results of the N channel propagation paths are used to determine the The location of the terminal device.
The communication device according to claim 25, wherein:

The processing module is also used to obtain channel impulse response;

The processing module is further configured to determine the measurement results of the N channel propagation paths according to the channel impulse response.
The communication device according to claim 26, wherein:

The processing module is further configured to filter out the N channel propagation paths from the channel impulse response;

The processing module is also used to determine the measurement results of the N channel propagation paths.
The communication device according to claim 27, wherein the N channel propagation paths are any one of the following:

N channel propagation paths with the largest received power in the channel impulse response; or,

N channel propagation paths with the smallest arrival time in the channel impulse response; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and whose received power is greater than or equal to the first power threshold; or,

N channel propagation paths in the channel impulse response that have the smallest time of arrival and the sum of the received power is greater than or equal to the second power threshold; or,

In the channel impulse response, N channel propagation paths with the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold.
The communication device according to claim 27 or 28, wherein the identification of each channel propagation path is the result of sorting the channel propagation paths in the channel impulse response in descending order of received power. Sequence number; or,

The identification of each channel propagation path is a sequence number obtained by sorting the channel propagation paths in the channel impulse response in descending order of arrival time.
The communication device according to any one of claims 25-29, wherein the measurement result of each channel propagation path further includes a weighting factor, and the weighting factor includes one or more of the following: time-of-arrival weighting Factor, angle of arrival weighting factor, power weighting factor, or path weighting factor; among them,

The arrival time weighting factor is negatively related to the value of the arrival time;

The time-of-arrival weighting factor is positively correlated with the bandwidth occupied by the reference signal;

The power weighting factor is positively correlated with the value of the received power;

The power weighting factor is positively correlated with the value of the transmission power of the reference signal;

The power weighting factor is negatively related to the value of the central frequency point or frequency band of the transmitted reference signal;

The angle of arrival weighting factor is positively correlated with the number of receiving antennas;

The path weighting factor is positively correlated with one or more of the following: the arrival time weighting factor, the arrival angle weighting factor, or the power weighting factor.
The communication device according to claim 30, wherein the measurement results of the N channel propagation paths are used to determine the location of the terminal equipment, comprising:

Determine multiple candidate positions according to the measurement results of the N channel propagation paths;

Determine the weighted values of the multiple candidate positions according to the weighting factors in the measurement results of the N channel propagation paths;

According to the weighted values of the multiple candidate positions, the weighted average of the multiple candidate positions is determined as the position of the terminal device.
The communication device according to any one of claims 25-31, wherein the communication device is an access network device, the positioning calculation device is a core network device or the terminal device, and the N channels The propagation path includes N uplink channel propagation paths, and the measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: the uplink corresponding to each uplink channel propagation path Arrival time, the uplink angle of arrival corresponding to each uplink channel propagation path, and the uplink received power corresponding to each uplink channel propagation path;

The transceiver module is also used for the access network device to send the first message to the core network device or the terminal device.
The communication device according to any one of claims 25-31, wherein the communication device is the terminal device, the positioning calculation device is a core network device or an access network device, and the N channels The propagation path includes N downlink channel propagation paths, and the measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink corresponding to each downlink channel propagation path The arrival time, the downlink arrival angle corresponding to each downlink channel propagation path, and the downlink received power corresponding to each downlink channel propagation path;

The transceiver module is also used for the terminal device to send the first message to the core network device or the access network device.
The communication device according to any one of claims 25-33, wherein:

The transceiver module is further configured to receive a first request from the positioning computing device; wherein, the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is Determined according to the first capability information, the first capability information is used to indicate the positioning measurement capability of the communication device.
The communication device according to claim 34, wherein:

The transceiver module is further configured to send the first capability information to the positioning computing device before receiving the first request from the positioning computing device.
The communication device according to claim 35, wherein:

The transceiver module is further configured to receive a second request from the positioning computing device before sending the first capability information to the positioning computing device; wherein, the second request is used to request the first Ability information.
A communication device, characterized by comprising: a processing module and a transceiver module; wherein,

The transceiver module is configured to receive a first message from a positioning measurement device; wherein, the first message includes the channel impulse response or the measurement result of the N channel propagation paths of the terminal device, and the measurement result of each channel propagation path Contains the identification of each channel propagation path and one or more of the following information: the arrival time corresponding to each channel propagation path, the arrival angle corresponding to each channel propagation path, and each channel propagation path Corresponding received power, N is a positive integer;

The processing module is configured to determine the location of the terminal device according to the measurement results of the N channel propagation paths.
The communication device according to claim 37, wherein:

The processing module is further configured to determine the measurement results of the N channel propagation paths according to the channel impulse response.
The communication device according to claim 38, wherein:

The processing module is further configured to filter out the N channel propagation paths from the channel impulse response;

The processing module is also used to determine the measurement results of the N channel propagation paths.
The communication device according to any one of claims 37-39, wherein the N channel propagation paths are any one of the following:

N channel propagation paths with the largest received power in the channel impulse response; or,

N channel propagation paths with the smallest arrival time in the channel impulse response; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and whose received power is greater than or equal to the first power threshold; or,

N channel propagation paths in the channel impulse response that have the smallest arrival time and the sum of the received power is greater than or equal to the second power threshold; or,

In the channel impulse response, N channel propagation paths with the smallest arrival time, received power greater than or equal to the third power threshold, and the sum of received power greater than or equal to the fourth power threshold.
The communication device according to any one of claims 37-40, wherein the identification of each channel propagation path is a response to the channel propagation path in the channel impulse response in descending order of received power. The sequence number after sorting; or,

The identification of each channel propagation path is a sequence number obtained by sorting the channel propagation paths in the channel impulse response in descending order of arrival time.
The communication device according to any one of claims 37-41, wherein the measurement result of each channel propagation path further includes a weighting factor, and the weighting factor includes one or more of the following: time-of-arrival weighting Factor, angle of arrival weighting factor, power weighting factor, or path weighting factor; among them,

The arrival time weighting factor is negatively related to the value of the arrival time;

The time-of-arrival weighting factor is positively correlated with the bandwidth occupied by the reference signal;

The power weighting factor is positively correlated with the value of the received power;

The power weighting factor is positively correlated with the value of the transmission power of the reference signal;

The power weighting factor is negatively related to the value of the central frequency point or frequency band of the transmitted reference signal;

The angle of arrival weighting factor is positively correlated with the number of receiving antennas;

The path weighting factor is positively correlated with one or more of the following: the arrival time weighting factor, the arrival angle weighting factor, or the power weighting factor.
The communication device according to claim 42, wherein:

The processing module is further configured to determine multiple candidate positions according to the measurement results of the N channel propagation paths;

The processing module is further configured to determine the weighting values of the multiple candidate positions according to the weighting factors in the measurement results of the N channel propagation paths;

The processing module is further configured to determine the weighted average of the multiple candidate locations as the location of the terminal device according to the weighted values of the multiple candidate locations.
The communication device according to any one of claims 37-43, wherein the positioning measurement device is an access network device, the communication device is a core network device or the terminal device, and the N channels The propagation path includes N uplink channel propagation paths, and the measurement result of each uplink channel propagation path includes the identification of each uplink channel propagation path and one or more of the following information: the uplink corresponding to each uplink channel propagation path Arrival time, the uplink angle of arrival corresponding to each uplink channel propagation path, and the uplink received power corresponding to each uplink channel propagation path;

The transceiver module is also used for the core network device or the terminal device to receive the first message from the access network device.
The communication device according to any one of claims 37-43, wherein the positioning measurement device is the terminal device, the communication device is a core network device or an access network device, and the N channels The propagation path includes N downlink channel propagation paths, and the measurement result of each downlink channel propagation path includes the identification of each downlink channel propagation path and one or more of the following information: the downlink corresponding to each downlink channel propagation path The arrival time, the downlink arrival angle corresponding to each downlink channel propagation path, and the downlink received power corresponding to each downlink channel propagation path;

The transceiver module is also used for the core network device or the access network device to receive the first message from the terminal device.
The communication device according to any one of claims 37-45, wherein:

The transceiver module is further configured to send a first request to the positioning measurement device; wherein, the first request is used to request the measurement results of the N channel propagation paths of the terminal device, and the first request is based on If the first capability information is determined, the first capability information is used to indicate the positioning measurement capability of the positioning measurement device.
The communication device according to claim 46, wherein:

The transceiver module is further configured to receive the first capability information before sending the first request to the positioning measurement device.
The communication device according to claim 47, wherein:

The transceiver module is further configured to send a second request before receiving the first capability information; wherein, the second request is used to request the first capability information.
A communication device, characterized in that, the communication device comprises: a processor coupled with a memory;

The memory is used to store a computer program;

The processor is configured to execute the computer program stored in the memory, so that the communication device executes the communication method according to any one of claims 1-24.
A computer-readable storage medium, wherein the computer-readable storage medium includes a computer program or instruction, and when the computer program or instruction runs on a computer, the computer executes the Any one of the communication methods.
A communication system, characterized in that, the communication system includes a positioning measurement device and a positioning calculation device; wherein,

The positioning measurement device is configured to execute the communication method according to any one of claims 1-12;

The positioning computing device is configured to execute the communication method according to any one of claims 13-24.