A method, device and communication system for reporting positioning information

Abstract

The present application discloses a positioning information reporting method, device and communication system, which relate to the field of communication technology. The terminal device receives a positioning reference signal from one or more access network devices; then determines one or more positioning measurement results and line-of-sight LOS status information corresponding to the one or more positioning measurement results based on the positioning reference signal, that is, positioning measurement information, and sends the positioning measurement information to the service access network device, which forwards the positioning measurement information to the positioning server. The LOS status information fed back by the terminal device can indicate whether the positioning measurement result is LOS or non-line-of-sight NLOS. After the positioning server obtains the positioning measurement result, it can learn which positioning measurement result is reliable according to the LOS status information corresponding to the positioning measurement result. When the positioning server clearly knows which positioning measurement results are reliable, the location of the terminal device can be determined more accurately.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and communication system for reporting positioning information. Background Art

[0002] High-precision positioning is one of the key technologies of the fifth-generation (5G) new radio (NR) mobile communication network. Through cellular positioning, the location of a terminal device can be accurately identified, so as to provide location-based services for users, such as navigation, cargo delivery, etc. Among them, cellular positioning measures the straight-line distances between multiple 5G base stations (gNodeB, gNB) and the terminal device to obtain the geometric position relationship between the 5G base stations and the terminal device, and then calculates the position of the terminal device based on the known positions of the gNBs.

[0003] The positioning of the terminal device depends on the measurement of the line of sight (LOS) between the terminal device and the gNB (that is, the straight-line distance between the terminal device and the gNB). However, in practical applications in production and life, due to the existence of obstacles (such as trees, buildings, walls, etc.) that will reflect positioning signals, the signal propagation distance measured by the gNB may be a non-line-of-sight (NLOS) propagation distance. When positioning the terminal device, due to the existence of the NLOS path, the positioning accuracy of the terminal device is poor. Summary of the Invention

[0004] The present application provides a method, device, and communication system for reporting positioning information, so that a positioning server can refer to the channel conditions between a terminal device and an access network device to more accurately locate the terminal device.

[0005] In a first aspect, the present application provides a method for reporting positioning information. The method for reporting positioning information can be executed by a terminal device, which can be understood as a positioning tag, a vehicle-mounted device, a mobile phone, etc., and the present application does not make specific limitations here. When executing the method for reporting positioning information, the terminal device can receive positioning reference signals from one or more access network devices; and send positioning measurement information to a serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signals and LOS status information respectively corresponding to the one or more positioning measurement results.

[0006] It should be noted that the service access network device can provide communication services for the terminal device. For example, the terminal device can receive messages from other terminal devices through the service access network device, or the terminal device can forward messages through the service access network device. This application does not limit which communication services the service access network device can provide for the terminal device. In this application, the service access network device can also be one of the access network devices, and the service access network device can also send positioning reference signals to the terminal device; or the service access network device and the access network device are independent of each other, and the service access network device does not send positioning reference signals to the terminal device, but only receives positioning measurement information from the terminal device here. No matter which of the above situations the service access network device is in, the solution of this application is applicable. Additionally, it should be noted that the access network device or the service access network device can be a base station or a transmission reception point (TRP). This application does not specifically limit this here.

[0007] In addition, the terminal device can estimate the channel between the terminal device and any access network device through the maximum likelihood estimation method or the multiple signal classification algorithm (MUSIC) to determine the positioning measurement result. Of course, in actual applications, the positioning measurement result can also be determined by other means. This application does not specifically limit this here, and only the above methods or algorithms are used for exemplary illustration here.

[0008] It should also be noted that a positioning measurement result is determined by the terminal device based on the positioning reference signal sent by an access network device, and the positioning measurement result corresponds to a LOS status information, which can indicate whether the positioning measurement result is LOS or NLOS. Among them, the positioning measurement result can be indicated by the time of arrival (TOA) and / or the angle of arrival. Of course, it can also be indicated by other metrics. This application does not specifically limit this here. In addition, the terminal device can estimate the channel between the terminal device and the access network device through a consistency analysis algorithm (that is, after the positioning reference signal is received by different antenna units of the terminal device, the fluctuation degree of the reference signal determines the LOS status information) to determine the LOS status information. In addition, this application may also determine the LOS status information according to other methods, which are not shown one by one here. Any method that can determine the positioning measurement result and the LOS status information based on the positioning reference signal is applicable to this application.

[0009] In the embodiments of the present application, the LOS status information fed back by the terminal device during positioning can indicate whether the positioning measurement result is LOS or NLOS. During positioning, the positioning server can learn which positioning measurement result is reliable based on the LOS status information corresponding to the positioning measurement result, facilitating a more accurate determination of the position of the terminal device.

[0010] In an alternative embodiment, the positioning measurement result is determined by the terminal device through a first algorithm for resolving the positioning reference signal between the terminal device and the access network device; the LOS status information is determined by the terminal device through a second algorithm for resolving the channel between the terminal device and the access network device.

[0011] It should be noted that the terminal device can determine the positioning measurement result between the terminal device and the access network device through the first algorithm. Among them, the first algorithm can be the maximum likelihood estimation algorithm, or it can also be the MUSIC algorithm, etc. The present application does not specifically limit this here. Among them, the maximum likelihood estimation algorithm is to perform a correlation operation on the locally generated positioning reference signal and the received positioning reference signal. The time corresponding to all peak points greater than the threshold is the arrival time of the positioning reference signal through different paths, and the arrival time of the first peak point is the TOA of the LOS path. The MUSIC algorithm is a method based on matrix eigen-space decomposition. It decomposes the autocorrelation matrix of the observed reference signal into a signal subspace and a noise subspace, and constructs a spatial spectrum. The TOA value corresponding to the spectral peak of the spatial spectrum is the measurement value.

[0012] The terminal device can detect the LOS status of the channel between the terminal device and the access network device through the second algorithm. Among them, the second algorithm can be the consistency analysis algorithm or an algorithm based on artificial intelligence (AI). Among them, the consistency analysis algorithm determines the LOS status by detecting the signal strength fluctuation of the terminal device under different antenna units. For example, if the signal strength fluctuation of the terminal device is small, it is considered that the positioning measurement information is LOS; if the signal strength fluctuation of the terminal device is large, it is considered that the positioning measurement information is NLOS. The algorithm based on AI is to use a neural network to train a neural network model based on the historical channel data between the terminal and each access network. When making a LOS judgment, the estimated channel coefficient or the received reference signal is directly input into the neural network model, and the LOS detection result is output.

[0013] In an alternative embodiment, there are multiple LOS status information. The multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and one or more LOS status information corresponding to the positioning measurement results are indicated through the sorting. Sorting the multiple positioning measurement results according to the corresponding LOS probabilities can implicitly indicate the relative relationship of the LOS probability magnitudes among the respective measurement quantities, can save extra LOS status information bits (that is, save the number of information bits occupied by non-implicit indication), and at the same time achieve the purpose of indicating the weight magnitudes of the respective measurement quantities of the positioning server and improving the positioning accuracy.

[0014] In addition, when the terminal device receives positioning reference signals from multiple access network devices, it can determine multiple positioning measurement results based on the multiple positioning reference signals. The LOS probabilities corresponding to different positioning measurement results are different. The terminal device can agree with the serving access network device in advance to only report several positioning measurement results with higher sorted LOS probabilities.

[0015] In an alternative embodiment, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and each access network device.

[0016] It should be noted that the LOS status information is only for illustrative purposes. The LOS status information can indicate whether the channel between the terminal device and the access network device is LOS or NLOS. In practical applications, the LOS status information can also be referred to as the LOS result, LOS status, etc. The LOS status information can also include LOS channel indication information with other names, which is not specifically limited in this application. In addition to the above-mentioned LOS determination result and LOS probability, this application can also include LOS quality, LOS confidence, etc. The LOS quality or LOS confidence is a metric of the channel determined after performing LOS detection on the channel based on the reference signal. The higher the LOS quality or LOS confidence, the greater the LOS probability, and the more likely the channel is to be LOS. The lower the LOS quality or LOS confidence, the smaller the LOS probability, and the more likely the channel is to be a NLOS channel. In addition, the above-mentioned LOS status information is not only for the LOS situation of the channel between the terminal device and the access network device, but can also be the NLOS situation of the channel between the terminal device and the access network device. That is, the LOS status information can be the NLOS determination result or NLOS probability of the channel between the terminal device and the access network device, etc., which is not specifically limited in this application.

[0017] Among them, the LOS probability is calculated by performing LOS detection on the channel between the terminal device and the access network device through a LOS detection algorithm (such as a consistency analysis algorithm). Reporting the LOS probability (which can be reported after quantifying the LOS probability) can indicate the channel LOS status information, which is beneficial to improving the positioning accuracy. The LOS decision result is obtained by comparing the LOS probability with a certain threshold P LOS to make a LOS / NLOS decision on the channel. That is, when the LOS probability is greater than or equal to P LOS , it is determined as a LOS channel. For example, a bit value of 1 indicates that the channel between the terminal device and the access network device is a LOS channel. When the LOS probability is lower than P LOS , it is determined as a NLOS channel. For example, a bit value of 0 indicates that the channel between the terminal device and the access network device is a NLOS channel. Reporting the LOS decision result can effectively reduce the bit overhead reported by the physical layer, reduce the system load, and at the same time indicate the most basic LOS status of the current channel to the positioning server. The LOS confidence is similar to the LOS probability. It is also a metric for the current LOS channel determined after performing LOS detection on the channel based on the reference signal. The higher the LOS confidence, the more likely the channel is to be a LOS. The lower the LOS confidence, the more likely the channel is to be a NLOS. The LOS quality is a metric for the current LOS channel determined after performing LOS detection on the channel based on the reference signal. The higher the quality, the greater the LOS probability, and the more likely the channel is to be a LOS channel. The lower the quality, the smaller the LOS probability, and the more likely the channel is to be a NLOS channel. This application only makes a schematic description here and does not specifically limit the determination method of the LOS status information.

[0018] In an alternative embodiment, the LOS status information includes: quality parameters of the channels between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0019] It should be noted that the quality parameters can reflect the channel condition between the terminal device and the access network device and can indirectly reflect the LOS status. For example, channel gain, variance, and standard deviation. Among them, the channel gain is the result obtained by dividing the power of the received reference signal by the transmission power of the reference signal. The variance is the variance magnitude of the current channel coefficient estimated based on the reference signal. The standard deviation is the positive square root value of the channel coefficient variance. If the quality parameter between the terminal device and the access network device is the channel gain, and if the value of the channel gain exceeds the threshold of the channel gain, it can be determined that the quality of the channel is very good. Only in the LOS channel state can the channel gain exceed the threshold. Therefore, it can be determined that the channel between the terminal device and the access network device is a LOS. This application only makes a schematic description here with the quality parameters being channel gain, variance, and standard deviation. However, in actual applications, it is not limited to specific parameters.

[0020] In an alternative embodiment, the terminal device may send positioning configuration request information to a positioning server; and receive positioning reference signal configuration information and LOS detection configuration information from the positioning server; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, access network device indication information for LOS detection, and indication information of the positioning reference signal for LOS detection.

[0021] It should be noted that the configuration information of the positioning reference signal includes the time-domain resource configuration information of the positioning reference signal, that is, in which time-domain resource the positioning reference signal is sent, so that the terminal device can receive the positioning reference signal under the corresponding time-domain resource. The LOS detection configuration information can indicate what algorithm the terminal device uses for LOS detection, which access network device channels between the terminal device and the terminal device are detected, and what specific information is reported, etc. This application only makes an exemplary description here and does not specifically limit what specific information is included in the LOS detection configuration information. For example, the algorithms used for LOS detection may include a consistency analysis algorithm, a detection algorithm based on a neural network model, etc. The positioning server can indicate to the terminal device to use the consistency analysis algorithm for LOS detection through the LOS detection configuration information. Among them, the access network device indication information for LOS detection can be indicated by the identifier of the access network device, and the indication information of the positioning reference signal for LOS detection can be indicated by the identifier of the reference signal. Which access network device channels the terminal device specifically detects can be determined according to the identifier of the access network device in the LOS detection configuration information, or can also be determined by the identifier of the reference signal. This application does not make a specific limitation here.

[0022] In an alternative embodiment, the terminal device may receive indication information from a serving access network device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

[0023] It should be noted that the indication information may be sent through downlink control information, or the media access control (MAC) layer, or radio resource control (RRC).

[0024] In an alternative embodiment, receive a first LOS detection trigger status from a positioning server, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status; according to the status value of the first LOS detection trigger status and the corresponding relationship, determine the first LOS detection configuration information corresponding to the first LOS detection trigger status; detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to one or more positioning measurement results.

[0025] It should be noted that the LOS detection configuration information may include multiple types. Through the LOS detection trigger status, the terminal device can clearly know which specific LOS detection configuration information is used to detect the channel between the terminal device and the access network device. It should also be noted that the terminal device can detect all channels between the terminal device and the access network device according to the first LOS detection configuration information, or only detect some channels between the terminal device and the access network device according to the first LOS detection configuration information. This application does not make specific limitations here.

[0026] In an optional implementation manner, the terminal device sends the LOS detection capability information of the terminal device to the positioning server; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels that the terminal device supports LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithm supported by the terminal device, and the confidence level of the LOS detection algorithm supported by the terminal device.

[0027] It should be noted that the terminal device can actively send the LOS detection capability information to the positioning server, or can send the LOS detection capability information to the positioning server when the positioning server sends a request to the terminal device. This application does not specifically limit which specific situation it is.

[0028] In a second aspect, this application provides a positioning information reporting method. This method can be executed by the serving access network device. The serving access network device can receive positioning measurement information from the terminal device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and the LOS status information corresponding to one or more positioning measurement results respectively; and send the positioning measurement information to the positioning server.

[0029] In an optional implementation manner, there are multiple pieces of LOS status information. Sort the multiple positioning measurement results according to the corresponding LOS probability, and indicate the LOS status information corresponding to one or more positioning measurement results through the sorting. In an optional implementation manner, the LOS status information includes: the LOS decision result or LOS probability of the channel between the terminal device and each access network device;.

[0030] In an optional implementation manner, the LOS status information includes: the quality parameters of the channels between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0031] In an alternative embodiment, the service access network device may receive indication information from the positioning server; and send the indication information to the terminal device; the indication information is used to instruct the terminal device to perform positioning measurements and LOS detection.

[0032] In a third aspect, an embodiment of the present application provides a positioning information reporting method, which may be executed by a positioning server. The positioning server receives positioning measurement information from the service access network device. The positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on positioning reference signals and LOS status information respectively corresponding to the one or more positioning measurement results; and determines the location information of the terminal device by selecting one or more positioning measurement results according to the LOS status information in the positioning measurement information.

[0033] It should be noted that the positioning server may select the positioning measurement results with the LOS status information all being LOS to calculate the location information of the terminal device. However, in actual applications, since the determination of the LOS status information may be misjudged, the positioning server may calculate the weights of different measurement quantities according to the LOS probability to calculate the location information of the terminal device to avoid this situation of LOS misjudgment. For example, the LOS probability corresponding to positioning measurement result 1 is 0.1, and the LOS probability corresponding to positioning measurement result 2 is 0.9. When calculating the location of the terminal device, it can be determined by f(weight value corresponding to measurement result 1 * 0.1 + weight value corresponding to measurement result 2 * 0.9), where f is the terminal calculation function.

[0034] In addition, the positioning server may also calculate the location of the terminal by selecting some measurement quantities according to the LOS probability. For example, the LOS probability corresponding to positioning measurement result 1 is 0.3, the LOS probability corresponding to positioning measurement result 2 is 0.9, the LOS probability corresponding to positioning measurement result 3 is 0.8, and the LOS probability corresponding to positioning measurement result 4 is 0.9. When calculating the location of the terminal device, the positioning server may select measurement results 2, 3, and 4 with the LOS probability greater than 0.8, and calculate the location of the terminal device through the terminal calculation function.

[0035] In an alternative embodiment, the positioning server may receive positioning configuration request information from the terminal device; send positioning reference signal configuration information and LOS detection configuration information to the terminal device; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of the access network device for LOS detection, indication information of the positioning reference signal for LOS detection.

[0036] In an alternative embodiment, the positioning server may also send a first LOS detection trigger status to the terminal device, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status, so that the terminal device determines the first LOS detection configuration information corresponding to the first LOS detection trigger status according to the first LOS detection trigger status and the corresponding relationship; the positioning reference signals of one or more access network devices are detected through the first LOS detection configuration information, and the LOS status information corresponding to one or more positioning measurement results is determined.

[0037] In an alternative embodiment, the positioning server receives positioning measurement information from the serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and the LOS status information respectively corresponding to the one or more positioning measurement results.

[0038] In an alternative embodiment, there are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to the corresponding LOS probability, and the LOS status information corresponding to one or more positioning measurement results is indicated by the sorting. In an alternative embodiment, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and each access network device.

[0039] In an alternative embodiment, the LOS status information includes: the quality parameters of the channels between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0040] In an alternative embodiment, the positioning server receives LOS detection capability information from the terminal device; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported by the terminal device for LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0041] In a fourth aspect, the present application provides a terminal device, including: a receiving unit, configured to receive positioning reference signals from one or more access network devices; a sending unit, configured to send positioning measurement information to the serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and the LOS status information respectively corresponding to the one or more positioning measurement results.

[0042] In an alternative embodiment, there are multiple LOS status information. The multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and one or more LOS status information corresponding to the positioning measurement results are indicated through the sorting. In an alternative embodiment, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and each access network device.

[0043] In an alternative embodiment, the LOS status information includes: the quality parameters of the channels between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0044] In an alternative embodiment, the sending unit is further configured to send positioning configuration request information to the positioning server; the receiving unit is further configured to receive positioning reference signal configuration information and LOS detection configuration information from the positioning server; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, access network device indication information for LOS detection, and indication information of the positioning reference signal for LOS detection.

[0045] In an alternative embodiment, the receiving unit is further configured to receive the first LOS detection trigger status from the positioning server, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status; according to the first LOS detection trigger status and the corresponding relationship, determine the first LOS detection configuration information corresponding to the first LOS detection trigger status; detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to each of the one or more positioning measurement results.

[0046] In an alternative embodiment, the receiving unit is further configured to receive indication information from the serving access network device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

[0047] In an alternative embodiment, the sending unit is further configured to send the LOS detection capability information of the terminal device to the positioning server; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported by the terminal device for LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0048] Fifth aspect, the present application provides a service access network device, including: a receiving unit, configured to receive positioning measurement information from a terminal device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on positioning reference signals and LOS status information respectively corresponding to the one or more positioning measurement results; a sending unit, configured to send the positioning measurement information to a positioning server.

[0049] In an optional implementation manner, there are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and the LOS status information corresponding to the one or more positioning measurement results is indicated by the sorting. In an optional implementation manner, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and each access network device.

[0050] In an optional implementation manner, the LOS status information includes: quality parameters of the channel between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0051] In an optional implementation manner, the receiving unit is further configured to receive indication information from the positioning server; the sending unit is further configured to send the indication information to the terminal device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

[0052] Sixth aspect, the present application provides a positioning server, including: a receiving unit, configured to determine first LOS detection configuration information corresponding to a first LOS detection trigger state according to the first LOS detection trigger state and the corresponding relationship; a processing unit is configured to detect one or more positioning reference signals through the first LOS detection configuration information to determine LOS status information respectively corresponding to the one or more positioning measurement results.

[0053] In an optional implementation manner, the receiving unit is configured to receive positioning configuration request information from the terminal device; the sending unit is configured to send positioning reference signal configuration information and LOS detection configuration information to the terminal device; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of the access network device for LOS detection, and indication information of the positioning reference signal for LOS detection.

[0054] In an alternative embodiment, the sending unit is further configured to send a first LOS detection trigger status to the terminal device, where there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status, so that the terminal device determines the first LOS detection configuration information corresponding to the first LOS detection trigger status according to the first LOS detection trigger status and the corresponding relationship; the processing unit is configured to detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to each of the one or more positioning measurement results.

[0055] In an alternative embodiment, the receiving unit is configured to receive positioning measurement information from the serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signals and the LOS status information respectively corresponding to the one or more positioning measurement results.

[0056] In an alternative embodiment, the receiving unit is further configured to receive positioning measurement information from the serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signals and the LOS status information respectively corresponding to the one or more positioning measurement results.

[0057] In an alternative embodiment, there are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and the LOS status information is indicated by the sorting.

[0058] In an alternative embodiment, the LOS status information includes: the LOS decision result or LOS probability of the channel between the terminal device and each access network device.

[0059] In an alternative embodiment, the LOS status information includes: the quality parameters of the channels between the terminal device and each access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0060] In an alternative embodiment, the receiving unit is further configured to receive LOS detection capability information from the terminal device; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported by the terminal device for LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0061] In a seventh aspect, the present application provides a communication system, including: a serving access network device and a positioning server;

[0062] The service access network device can forward the positioning measurement information to the positioning server. The positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and the LOS status information respectively corresponding to the one or more positioning measurement results. The positioning server can select one or more positioning measurement results according to the LOS status information in the positioning measurement information to determine the location information of the terminal device.

[0063] In a eighth aspect, the present application provides a terminal device, including at least one processor. When the device runs, the processor executes the computer program or instruction stored in the memory, so that the terminal device executes the method as described in the first aspect or each embodiment of the first aspect. The memory may be located in the processor or may be implemented by a chip independent of the processor. The present application does not specifically limit this here.

[0064] In a ninth aspect, the present application provides a service access network device, including at least one processor. When the device runs, the processor executes the computer program or instruction stored in the memory, so that the service access network device executes the method as described in the second aspect or each embodiment of the second aspect. The memory may be located in the processor or may be implemented by a chip independent of the processor. The present application does not specifically limit this here.

[0065] In a tenth aspect, the present application provides a positioning server, including at least one processor. The memory is used to store a computer program. When the device runs, the processor executes the computer program or instruction stored in the memory, so that the positioning server executes the method as described in the third aspect or each embodiment of the third aspect. The memory may be located in the processor or may be implemented by a chip independent of the processor. The present application does not specifically limit this here.

[0066] In an eleventh aspect, the present application further provides a computer-readable storage medium. Computer-readable instructions are stored in the computer-readable storage medium. When the computer-readable instructions run on a computer, the computer is enabled to execute the method as described in the first aspect or any possible design in the first aspect, or the second aspect or any possible design in the second aspect, or the third aspect or any possible design in the third aspect.

[0067] In a twelfth aspect, the present application provides a computer program product including a computer program or instruction. When it runs on a computer, the computer is enabled to execute the method as described in the first aspect or each embodiment of the first aspect, or the second aspect or any possible design in the second aspect, or the third aspect or any possible design in the third aspect.

[0068] In a thirteenth aspect, the present application provides a chip system, which includes a processor and may further include a memory, and is used to implement the method in the above first aspect or any possible design in the first aspect, or the method in the second aspect or any possible design in the second aspect, or the method in the third aspect or any possible design in the third aspect. The chip system may be composed of chips or may include chips and other discrete devices.

[0069] In a fourteenth aspect, the present application provides a communication system, which includes a terminal device, an access network device, and a positioning server, and the communication system is used to execute the method in the above first aspect or any possible design in the first aspect, or the method in the second aspect or any possible design in the second aspect, or the method in the third aspect or any possible design in the third aspect.

[0070] For the technical effects that can be achieved in the above second aspect to fourteenth aspect, please refer to the technical effects that can be achieved in the corresponding possible design solutions in the above first aspect, and the present application will not repeat them here. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 shows a schematic diagram of the system architecture provided by an embodiment of the present application;

[0072] Figure 2 shows a schematic diagram of a positioning scenario provided by an embodiment of the present application;

[0073] Figure 3 shows a schematic flowchart of a positioning information reporting method provided by an embodiment of the present application;

[0074] Figure 4 shows a schematic flowchart of a positioning information reporting method provided by an embodiment of the present application;

[0075] Figure 5 shows a schematic flowchart of a positioning information reporting method provided by an embodiment of the present application;

[0076] Figure 6 shows a schematic diagram of the structure of a communication device provided by an embodiment of the present application;

[0077] Figure 7 shows a schematic diagram of the structure of a communication device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0078] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. Among them, in the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0079] Figure 1 Exemplarily, a schematic diagram of a positioning system architecture is provided. The network elements / modules involved mainly include three parts: the next generation radio access network (NG-RAN), the terminal, and the core network.

[0080] Among them, the core network includes the location management function (LMF) and the access and mobility management function (AMF). The positioning server, i.e., the LMF, is connected to the AMF, and the LMF and the AMF are connected through the NL1 interface. The LMF is responsible for supporting different types of location services related to the terminal, including positioning the terminal and transmitting auxiliary data to the terminal. The AMF can receive location service requests related to the terminal from the 5th generation core network location services (5GC LCS) entity, or the AMF itself can also initiate some location services on behalf of a specific terminal and forward the location service requests to the LMF. The AMF obtains the location information returned by the terminal and returns the location information to the 5GC LCS entity.

[0081] The NG-RAN may include gNB, next generation evolved nodeB (ng-eNB), etc. The gNB and the ng-eNB are connected through the Xn interface, and the AMF is connected to the ng-eNB / gNB through the NG-C interface.

[0082] The terminal can measure the downlink signals from the NG-RAN to support positioning. The gNB / ng-eNB can provide positioning measurement information for the terminal and convey this positioning measurement information to the terminal.

[0083] The possible information interactions between the LMF and the terminal include the following: 1) The LMF and the ng-eNB / gNB exchange information through NR positioning protocol a (NRPPa) messages, such as obtaining positioning reference signals (PRS), sounding reference signal (SRS) configuration information, cell timing, cell location information, etc.; 2) The LMF and the terminal exchange terminal capability information, auxiliary information, positioning measurement information, etc. through LTE positioning protocol (LPP) messages.

[0084] It should be noted that this application is not limited to Figure 1 the system architecture shown, and can also be applied to other future communication systems, such as the 6th generation (6G) communication system architecture, etc. Moreover, the network elements involved in this application may maintain the same functions in future communication systems, but their names may change.

[0085] The terminal device involved in the embodiments of the present application, also known as a terminal, is an entity on the user side for receiving or transmitting signals, used to send uplink signals to a network device or receive downlink signals from a network device. It includes devices that provide voice and / or data connectivity to users. For example, it may include handheld devices with wireless connection functions or processing devices connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal device may include user equipment (UE), V2X terminal device, wireless terminal device, mobile terminal device, device-to-device (D2D) terminal device, machine-to-machine / machine-type communications (M2M / MTC) terminal device, Internet of Things (IoT) terminal device, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, wearable devices, in-vehicle devices, etc.

[0086] By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices, also known as wearable intelligent devices or smart wearable devices, etc., are the general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not just a hardware device but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include those with complete functions and large sizes that can achieve complete or partial functions without relying on a smartphone, such as smart watches or smart glasses, etc., and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones, such as various smart bracelets for physical sign monitoring, smart helmets, and smart jewelry.

[0087] Any of the various terminal devices introduced above can be considered an in-vehicle terminal device if it is located on a vehicle (e.g., placed inside or installed inside the vehicle). An in-vehicle terminal device is also referred to as an on-board unit (OBU) for example.

[0088] The core network involved in the embodiments of this application may include network devices that process and forward signaling and data of users. For example, it includes core network devices such as AMF, session management function (SMF), and user plane gateway. The user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, and is generally located on the network side, such as serving gateway (SGW), packet data network gateway (PGW), or user plane function entity (UPF), etc. AMF and SMF are equivalent to the mobility management entity (MME) in the LTE system. AMF is mainly responsible for access, and SMF is mainly responsible for session management. Of course, other network elements may also be included in the core network, which will not be listed one by one here.

[0089] In the embodiments of the present application, the next generation radio access network (NG-RAN) involved may include one or more access network devices. The access network devices in the NG-RAN may also be referred to as base stations, or RAN nodes, or RAN devices. An access network device is an entity on the network side for transmitting and / or receiving signals, acting as a router between the terminal and the rest of the access network, where the rest of the access network may include an IP network, etc. The access network device can also coordinate the management of the attributes of the air interface. For example, the access network device may be an evolved Node B (eNB or e-NodeB) in LTE, and the eNB is a device deployed in the radio access network that meets the 4G standard and provides wireless communication functions for terminals. The access network device may also be a new radio controller (NR controller), may be a gNode B (gNB) in a 5G system, may be a centralized unit, may be a new radio base station, may be a remote radio head, may be a micro base station (also referred to as a small cell), may be a relay, may be a distributed unit, may be various forms of macro base stations, may be a TRP, a transmission measurement function (TMF), or a transmission point (TP), or any other radio access device, or a base station in next-generation communication, but the embodiments of the present application are not limited thereto.

[0090] When applying Figure 1 the positioning architecture shown, there may be Figure 2 the positioning scenario shown, which includes: multiple base stations gNB1 to gNB6, a UE, an LMF, and a serving base station gNB-s. Only a schematic description is made in the figure, but in actual applications, the number of base stations is not specifically limited. It should be noted that in actual applications, the UE can determine its position only by resolving the positioning reference signals from at least 3 base stations. The gNB1 to gNB6 in the figure may respectively send positioning reference signals PRS1, PRS2, PRS3, PRS4, PRS5, and PRS6 to the UE. The UE can measure the distances between different base stations and the UE based on the positioning reference signals, and then calculate the position of the UE according to the known positions of the base stations. The terminal device can feedback the calculated position information to gNB-s and then to the LMF through gNB-s. In addition, Figure 2 there are obstacles between the UE and the gNB as shown in the figure, that is, the path between the UE and the gNB is NLOS.

[0091] It should be noted that the serving base station can provide communication services for the UE. For example, the UE can receive messages from other UEs through the serving base station, or the UE can forward messages through the serving base station. This application does not limit which communication services the serving base station can provide for the UE. In actual applications, the serving base station can be one of gNB1 to gNB6, that is, the serving base station can also send positioning reference signals to the UE. Or as Figure 2 shown, the serving base station is independent of gNB1 to gNB6, and the serving base station does not send positioning reference signals to the UE. Here, it only receives positioning measurement information from the UE. No matter which type of base station the serving base station is, the solution of this application is applicable.

[0092] Next, refer to Figure 3 to specifically introduce the positioning process provided by this application. Positioning needs to be realized through the interaction of access network devices, serving access network devices, terminal devices, and positioning servers. Figure 3 In Figure 3 , the UE is used to represent the terminal device, gNB1 and gNB2 are used to represent the access network devices, gNB-s is used to represent the serving access network device, and LMF is used to represent the positioning server. However, in actual applications, the number of access network devices is not limited.

[0093] 301A, gNB1 sends positioning reference signal 1 to the UE.

[0094] 301B, gNB2 sends positioning reference signal 2 to the UE.

[0095] 301C, gNB-s sends positioning reference signal 3 to the UE.

[0096] Correspondingly, the UE will respectively receive positioning reference signal 1, positioning reference signal 2, and positioning reference signal 3 from gNB1, gNB2, and gNB-s.

[0097] 302, the UE determines positioning measurement information 1 based on positioning reference signal 1, determines positioning measurement information 2 based on positioning reference signal 2, and determines positioning measurement information 3 based on positioning reference signal 3.

[0098] Among them, a positioning measurement result is determined by a terminal device based on a positioning reference signal sent by an access network device, and the positioning measurement result corresponds to a LOS status information, which can indicate whether the positioning measurement result is LOS or NLOS. Among them, the positioning measurement result can be indicated by TOA, and / or, the angle of arrival. Of course, it can also be indicated by other metrics, which are not specifically limited in this application. The LOS status information can indicate whether the positioning measurement result is LOS or NLOS. For example: the positioning measurement information 1 includes the TOA, the angle of arrival measured by the UE for the positioning reference signal 1, and the LOS status information detected by the UE for the positioning reference signal 1.

[0099] It should be noted that the terminal device can determine the positioning measurement result between the terminal device and the access network device through a first algorithm. Among them, the first algorithm can be the maximum likelihood estimation algorithm, or it can also be the MUSIC algorithm, etc., which are not specifically limited in this application. Among them, the maximum likelihood estimation algorithm is to perform a correlation operation on the locally generated positioning reference signal and the received positioning reference signal. The time corresponding to all peak points greater than the threshold is the arrival time of the positioning reference signal through different paths, and the arrival time of the first peak point is the TOA of the LOS path. The MUSIC algorithm is a method based on matrix eigen-space decomposition. It decomposes the autocorrelation matrix of the observed reference signal into a signal subspace and a noise subspace, and constructs a spatial spectrum. The TOA value corresponding to the spectral peak of the spatial spectrum is the measurement value.

[0100] The terminal device can detect the LOS status of the channel between the terminal device and the access network device through a second algorithm. Among them, the second algorithm can be the consistency analysis algorithm, or it can also be an AI-based algorithm. Among them, the consistency analysis algorithm determines the LOS status by detecting the signal strength fluctuation of the terminal device under different antenna units. For example, if the signal strength fluctuation of the terminal device is small, the positioning measurement information is considered to be LOS; if the signal strength fluctuation of the terminal device is large, the positioning measurement information is considered to be NLOS. The AI-based algorithm is to train a neural network model based on the historical channel data between the terminal and each access network. When making a LOS judgment, the estimated channel coefficient or the received reference signal is directly input into the neural network model to output the LOS detection result.

[0101] In addition, the positioning measurement result and the LOS status information can also be determined according to other methods, which are not shown one by one here. Any method that can determine the positioning measurement result and the LOS status information based on the positioning reference signal is applicable to this application.

[0102] 303. The UE sends the positioning measurement information 1, the positioning measurement information 2, and the positioning measurement information 3 to the gNB-s.

[0103] 304, the gNB-s sends positioning measurement information 1, positioning measurement information 2, and positioning measurement information 3 to the LMF.

[0104] In the embodiments of the present application, the LOS status information fed back by the terminal device during positioning can indicate whether the positioning measurement result is LOS or NLOS. During positioning, the positioning server can learn which positioning measurement result is reliable according to the LOS status information corresponding to the positioning measurement result, which is convenient for more accurately determining the position of the terminal device.

[0105] In an alternative manner, the LOS status information can be indicated in different ways, as follows:

[0106] Method 1, there are multiple LOS status information. The multiple positioning measurement results are sorted according to the corresponding LOS probability, and the LOS status information corresponding to one or more positioning measurement results is indicated by the sorting. It should be noted that the terminal device sorts the positioning measurement results according to the corresponding LOS probability, which can implicitly indicate the relative relationship of the LOS probability magnitudes between the respective measurement quantities, can save extra LOS status information bits (that is, save the information bit numbers occupied by non-implicit indication), and at the same time achieve the purpose of indicating the weight magnitudes of the respective measurement quantities to the positioning server and improving the positioning accuracy.

[0107] In addition, when the terminal device receives positioning reference signals from multiple access network devices, it can determine multiple positioning measurement results based on the multiple positioning reference signals. The LOS probabilities corresponding to different positioning measurement results are different. The terminal device can agree with the serving access network device in advance to only report several positioning measurement results with the top-ranked LOS probabilities.

[0108] Method 2, the LOS status information includes: the LOS decision result or LOS probability of the channel between the terminal device and the access network device; the LOS status information can be indicated by one or more bit positions.

[0109] It should be noted that the LOS status information is only illustrative. The LOS status information can indicate whether the channel between the terminal device and the access network device is LOS or NLOS. In actual applications, the LOS status information can also be referred to as the LOS result, LOS status, etc. The LOS status information can also include LOS channel indication information with other names, which is not specifically limited in this application. In addition to the LOS decision result and LOS probability mentioned above, this application can also include LOS quality, LOS confidence, etc. In addition, the above-mentioned LOS status information is not only the LOS situation of the channel between the terminal device and the access network device, but can also be the NLOS situation of the channel between the terminal device and the access network device. That is, the LOS status information can be the NLOS decision result or NLOS probability of the channel between the terminal device and the access network device, etc., which is not specifically limited in this application.

[0110] Among them, the LOS probability is obtained by performing LOS detection on the channel between the terminal device and the access network device through a LOS detection algorithm (such as a consistency analysis algorithm). Reporting the LOS probability (which can be reported after quantifying the LOS probability) can indicate the LOS status information of the channel, which is beneficial to improving the positioning accuracy. The LOS decision result is obtained by comparing the LOS probability with a certain threshold PLOS to perform a LOS / NLOS decision on the channel. That is, when the LOS probability is greater than or equal to PLOS, it is determined as a LOS channel. For example, a bit value of 1 indicates that the channel between the terminal device and the access network device is a LOS channel. When the LOS probability is lower than PLOS, it is determined as a NLOS channel. For example, a bit value of 0 indicates that the channel between the terminal device and the access network device is a NLOS channel. Reporting the LOS decision result can effectively reduce the bit overhead reported by the physical layer, reduce the load of the system, and at the same time indicate the most basic LOS status of the current channel to the positioning server. The LOS confidence is similar to the LOS probability. It is also a metric for the current LOS channel determined after performing LOS detection on the channel based on the reference signal. The higher the LOS confidence, the more likely the channel is to be LOS. The lower the LOS confidence, the more likely the channel is to be NLOS. The LOS quality is a metric for the current LOS channel determined after performing LOS detection on the channel based on the reference signal. The higher the quality, the greater the LOS probability, and the more likely the channel is to be a LOS channel. The lower the quality, the smaller the LOS probability, and the more likely the channel is to be a NLOS channel. This application only makes an illustrative description here and does not specifically limit the determination method of the LOS status information.

[0111] In addition, the LOS probability, LOS quality, LOS confidence, etc. can be determined by performing LOS detection on the channel between the terminal and the access network device through the LOS detection algorithm. The LOS decision result can be determined by comparing the LOS probability, or LOS quality, LOS confidence, etc. with a preset threshold. This application only makes a schematic description here and does not specifically limit the determination method of the LOS status information. In actual applications, the serving access network device and the terminal device can agree to select one or more of them to indicate the LOS status information. For example, the LOS status information can be indicated by the LOS decision result, or the LOS status information can be jointly indicated by the LOS decision result and the LOS probability.

[0112] It should also be noted that the status information of LOS can be indicated by 1 bit, or can be indicated by multiple bits. In actual applications, the serving access network device and the UE can agree on how many bits to use to indicate the LOS status information, and this application does not make specific limitations here. As shown in Table 1, if the LOS status information is the LOS decision result, it can be indicated by 1 bit. For example, if the bit is shown as 1, it indicates that the status information of LOS corresponding to the positioning measurement result is LOS, and if the bit is shown as 0, it indicates that the status information of LOS corresponding to the positioning measurement result is NLOS. For example, the positioning measurement result determined by the UE for the PRS1 measurement from gNB1 is A, and the corresponding bit value is 0. It can be known that the channel between the UE and gNB1 is NLOS.

[0113] Table 1

[0114]

[0115] In the above Table 1, the LOS decision result is indicated by 1 bit, but in actual applications, the LOS decision result can also be indicated by multiple bits, and this application does not make specific limitations here.

[0116] Mode 3, the LOS status information includes: quality parameters of the channel between the terminal device and the access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0117] It should be noted that the quality parameter can reflect the channel condition between the terminal device and the access network device, and can indirectly reflect the LOS state. For example, the channel gain, variance, and standard deviation. The channel gain is the result obtained by dividing the power of the received reference signal by the transmit power of the reference signal. The variance is the magnitude of the variance of the current channel coefficient estimated based on the reference signal. The standard deviation is the positive square root value of the channel coefficient variance. If the quality parameter between the terminal device and the access network device is the channel gain, and if the value of the channel gain exceeds the threshold of the channel gain, it can be determined that the channel quality is very good. Only in the LOS channel state can the channel gain exceed the threshold. Therefore, it can be determined that the channel between the terminal device and the access network device is LOS. In this application, only the channel gain, variance, and standard deviation are used as quality parameters for illustrative description. However, in actual applications, it is not limited to specific parameters.

[0118] To better illustrate the solution of this application, the following will describe by specific examples how the terminal device of this application may report the positioning measurement results and LOS status information in different cases. The methods of reporting the positioning measurement results and LOS status information mentioned below are only for illustrative description, and do not specifically limit the reporting method of the terminal device. In actual applications, there may be other reporting methods or ways to indicate the LOS status information. This application does not make specific limitations here. Any method of reporting and way of indicating the LOS status information are applicable to this application.

[0119] Assume that on the basis of Figure 2 , if the UE determines the LOS probabilities between the UE and gNB1, gNB2, gNB3, gNB4, gNB5, gNB6 respectively according to one or more of the above-mentioned LOS detection algorithms. Assume the LOS probabilities calculated by the UE are as follows: UE-gNB1: 0.95; UE-gNB2: 0.88; UE-gNB3: 0.92; UE-gNB4: 0.12; UE-gNB5: 0.96; UE-gNB6: 0.06. Since the physical layer reporting bit amount is limited, specifically, the reporting can be carried out with reference to the following situations based on this example, as follows:

[0120] Case 1 : The UE reports the measurement results of all base stations and the corresponding LOS probabilities. Of course, Case 1 is only for illustrative description here, and does not specifically limit how to report the measurement results of all base stations and the corresponding LOS probabilities.

[0121] The UE determines six positioning measurement results based on positioning reference signals from six gNBs. As shown in Table 2, the positioning measurement result determined by the UE's measurement of PRS1 from gNB1 is A, and the LOS probability is 0.95; the positioning measurement result determined by the UE's measurement of PRS2 from gNB2 is B, and the LOS probability is 0.88; the positioning measurement result determined by the UE's measurement of PRS3 from gNB3 is C, and the LOS probability is 0.92; the positioning measurement result determined by the UE's measurement of PRS4 from gNB4 is D, and the LOS probability is 0.12; the positioning measurement result determined by the UE's measurement of PRS5 from gNB5 is E, and the LOS probability is 0.96; the positioning measurement result determined by the UE's measurement of PRS6 from gNB6 is F, and the LOS probability is 0.06; the UE can report all the positioning measurement results and the LOS probabilities corresponding to each measurement result as shown in Table 2.

[0122] In addition, the larger the LOS probability, the higher the reliability of the positioning measurement result, and the smaller the interference of the positioning measurement result by NLOS; the smaller the LOS probability, the less reliable the positioning measurement result, and the greater the interference of the positioning measurement result by NLOS.

[0123] Table 2

[0124] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS probability gNB1 PRS1 A 0.95 gNB2 PRS2 B 0.88 gNB3 PRS3 C 0.92 gNB 4 PRS4 D 0.12 gNB5 PRS5 E 0.96 gNB6 PRS6 F 0.06

[0125] Case 2: The UE can perform a 0, 1 decision based on the LOS probability. 1 represents that there is a LOS channel between the terminal and the access network device, or the measurement result corresponding to the LOS path; 0 represents that there is no LOS channel between the terminal and the base station, or the measurement result corresponding to the NLOS path. The terminal sets the decision threshold to 0.5, that is, if the LOS probability is greater than or equal to 0.5, it is judged as 1, and if the LOS probability is less than 0.5, it is judged as 0. Of course, Case 2 is only an exemplary illustration here and does not specifically limit how to determine the LOS channel between the base station and the terminal device.

[0126] It can be seen from this that the LOS probability between the UE and gNB1 is 0.95, which is greater than 0.5, so it is judged as 1; the LOS probability between the UE and gNB2 is 0.88, which is greater than 0.5, so it is judged as 1; the LOS probability between the UE and gNB3 is 0.92, which is greater than 0.5, so it is judged as 1; the LOS probability between the UE and gNB4 is 0.12, which is less than 0.5, so it is judged as 0; the LOS probability between the UE and gNB5 is 0.96, which is greater than 0.5, so it is judged as 1; the LOS probability between the UE and gNB6 is 0.06, which is less than 0.5, so it is judged as 0. Based on the above judgment results, the UE can feedback the positioning measurement results and LOS status information with reference to Table 3.

[0127] Table 3

[0128]

[0129]

[0130] Alternatively, the UE may only report the positioning measurement results of the detected LOS, as shown in Table 4, that is, only report the positioning measurement results A, B, C, and E.

[0131] Table 4

[0132] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS indication information gNB1 PRS1 A 1 gNB2 PRS2 B 1 gNB3 PRS3 C 1 gNB5 PRS5 E 1

[0133] Case 3: The UE may report the positioning measurement results corresponding to the gNBs with the LOS probability greater than a certain threshold, or report the positioning measurement results corresponding to several gNBs with the largest LOS probability. Of course, Case 3 is only an illustrative example here and does not specifically limit how to report the positioning measurement results with the LOS probability meeting the threshold.

[0134] For example, report the positioning measurement results of the access network devices with the LOS probability greater than 0.9, or report the measurement results of the three access network devices with the largest LOS probability, and / or, the corresponding LOS probability (or the corresponding decision result), etc. As shown in Table 5, the UE reports the positioning measurement results with the LOS probability greater than 0.9.

[0135] Table 5

[0136] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS probability gNB1 PRS1 A 0.95 gNB3 PRS3 C 0.92 gNB5 PRS5 E 0.96

[0137] When the UE reports the positioning measurement results with the LOS probability greater than 0.9, it may also report the positioning measurement results with the decision result of 1, as shown in Table 6.

[0138] Table 6

[0139] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS indication information gNB1 PRS1 A 1 gNB3 PRS3 C 1 gNB5 PRS5 E 1

[0140] Case 4: The UE may report the measurement results and LOS probability of a specific gNB. Of course, Case 4 is only an illustrative example here and does not specifically limit how to report the measurement results of a specific base station and the corresponding LOS probability.

[0141] For example, according to the indication of the LMF, report the positioning measurement results and LOS probability of the four base stations gNB1, gNB2, gNB4, and gNB5, which can be as shown in Table 7.

[0142] Table 7

[0143] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS probability gNB1 PRS1 A 0.95 gNB2 PRS2 B 0.88 gNB 4 PRS4 D 0.12 gNB5 PRS5 E 0.96

[0144] In actual application, the LOS probability may also be indicated by reporting the LOS decision result, as shown in Table 8.

[0145] Table 8

[0146] Access network device identifier Positioning reference signal identifier Positioning measurement result LOS indication information gNB1 PRS1 A 1 gNB2 PRS2 B 1 gNB 4 PRS4 D 0 gNB5 PRS5 E 1

[0147] Scenario 5: The UE sorts the positioning measurement results in descending order of the LOS probability and reports them. The LMF determines the relative relationship of the LOS probabilities between each gNB and the UE according to the order of the positioning measurement results; or sorts the positioning measurement results in descending order of the LOS probability based on the LOS probability, and only reports the positioning measurement results of several gNBs with the highest LOS probabilities. The LMF determines the relative relationship of the LOS probabilities between each gNB and the UE according to the order of the positioning measurement results. Of course, Scenario 5 is only an exemplary illustration here, and does not specifically limit how to sort the LOS probability and report the positioning measurement results.

[0148] As shown in Table 9, after the UE sorts the positioning measurement results in descending order of the LOS probability, it reports the measurement results in sequence. The LMF can determine the sorting of the LOS probabilities between each gNB and the UE according to the reporting order of the positioning measurement results.

[0149] Table 9

[0150] Access network device identifier Positioning reference signal identifier Positioning measurement result gNB5 PRS5 E gNB 1 PRS1 A gNB3 PRS3 C gNB 2 PRS2 B gNB 4 PRS4 D gNB6 PRS6 F

[0151] As shown in Table 10, the UE sorts the measurement results in descending order of the LOS probability based on the LOS detection probability, and only reports the positioning measurement results of the 4 gNBs with the highest LOS probabilities. The LMF determines the relative relationship of the LOS probabilities between each base station according to the order of the measurement results.

[0152] Table 10

[0153] Access network device identifier Positioning reference signal identifier Positioning measurement result gNB5 PRS5 E gNB 1 PRS1 A gNB3 PRS3 C gNB 2 PRS2 B

[0154] In the above Scenarios 1 to 5, when the UE sorts and reports the positioning measurement results according to the LOS probability, after receiving the positioning measurement results, the LMF can perform weighted calculations on different positioning measurement results according to the sorting of the positioning measurement results to calculate the location information of the UE.

[0155] It should be noted that the positioning server can select the positioning measurement results with all LOS status information being LOS to calculate the location information of the terminal device. However, in actual applications, since the determination of LOS status information may be misjudged, the positioning server can calculate the weighted values of different measurement quantities according to the LOS probability to calculate the location information of the terminal device to avoid such LOS misjudgment situations. For example, the LOS probability corresponding to positioning measurement result 1 is 0.1, and the LOS probability corresponding to positioning measurement result 2 is 0.9. When calculating the location of the terminal device, it can be determined by f(weight value corresponding to measurement result 1 * 0.1 + weight value corresponding to measurement result 2 * 0.9), where f is the terminal calculation function.

[0156] In addition, the positioning server can also calculate the location of the positioning terminal by selecting some measurement quantities according to the LOS probability. For example, the LOS probability corresponding to positioning measurement result 1 is 0.3, the LOS probability corresponding to positioning measurement result 2 is 0.9, the LOS probability corresponding to positioning measurement result 3 is 0.8, and the LOS probability corresponding to positioning measurement result 4 is 0.9. When the positioning server calculates the location of the terminal device, the positioning server can select measurement results 2, measurement result 3, and measurement result 4 with LOS probabilities greater than 0.8, and calculate the location of the terminal device through the terminal calculation function.

[0157] Of course, the LOS probability in the above cases 1 to 5 can also be the NLOS probability, which is not specifically defined in this application. When the UE reports the LOS probability, it can be reported in a quantized form. For example, 0 to 1 is quantized into 16 levels and indicated by 4 bits, as shown in Table 11. Among them, 1111 indicates that the value range of the LOS probability is 15 / 16 - 1, and 0000 indicates that the value range of the LOS probability is 0 - 1 / 16. 1110 indicates that the value range of the LOS probability is 14 / 16 - 15 / 16, etc., which are not shown one by one in this application. For example, when the UE reports the positioning measurement result A with a LOS probability of 0.95, it can report 1111 because 0.95 is within the range of 15 / 16 - 1. This is only for example and not shown one by one.

[0158] Table 11

[0159] LOS probability Value of bit position 15 / 16-1 1111 14 / 16-15 / 16 1110 13 / 16-14 / 16 1101 … … 2 / 16-3 / 16 0010 1 / 16-2 / 16 0001 0-1 / 16 0000

[0160] It should also be noted that before the terminal device executes the Figure 3 positioning information reporting method shown, the terminal device can send a positioning configuration request message to the positioning server; and receive positioning reference signal configuration information and LOS detection configuration information from the positioning server; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of the access network device for LOS detection, indication information of the positioning reference signal for LOS detection.

[0161] Among them, the positioning reference signal configuration information may include the time-domain resource configuration information of the positioning reference signal, that is, in which time-domain resource the positioning reference signal is sent, so as to facilitate the terminal device to receive the positioning reference signal in the corresponding time-domain resource. The positioning server can indicate to the terminal device what algorithm to use for LOS detection, which access network devices' channels with the terminal device to detect, and what specific information to report, etc. through the LOS detection configuration information. For example, the algorithms used for LOS detection may include a consistency analysis algorithm, a detection algorithm based on a neural network model, etc. The positioning server can indicate to the terminal device to use the consistency analysis algorithm for LOS detection through the LOS detection configuration information. The positioning server can also indicate which access network devices' LOS detection results the terminal device should feedback through the indication information of the access network devices for LOS detection or the indication information of the positioning reference signal for LOS detection.

[0162] Among them, the indication information of the access network devices for LOS detection can be identified by the access network device identity (ID), such as TRP ID1, TRP ID2, etc. The indication information of the positioning reference signal for LOS detection can be indicated by the reference signal ID, such as PRS ID1, PRS ID2, etc. Correspondingly, the TRP index nr-LOS-Detect-ID to be detected for LOS is added to the LPP protocol positioning information request message NR-DL-TDOA-RequestLocationInformation-r16, which is only described here by way of example.

[0163]

[0164] In an alternative manner, the serving access network device may receive indication information from the positioning server, and the indication information can be used to indicate the terminal device to perform positioning measurement and LOS detection on the terminal device. Correspondingly, the serving access network device will forward the indication information to the terminal device.

[0165] It should be noted that the indication information may be sent through downlink control information, or MAC, or RRC, and this application does not specifically limit it here.

[0166] In an alternative manner, the terminal device may receive the first LOS detection trigger status from the positioning server, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status; according to the first LOS detection trigger status and the corresponding relationship, determine the first LOS detection configuration information corresponding to the first LOS detection trigger status; detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to one or more positioning measurement results.

[0167] Among them, there is a corresponding relationship between the LOS detection trigger status and the LOS detection configuration information, as shown in Table 12 below. The status value of 11 for the LOS detection trigger status indicates that the terminal device uses a consistency analysis algorithm to detect the channel between the terminal device and the access network device and reports the LOS judgment result; the status value of 10 indicates that the terminal device uses a consistency analysis algorithm to detect the channel between the terminal device and the access network device and reports the LOS probability; the status value of 01 indicates that the terminal device uses a detection algorithm based on a neural network model to detect the channel between the terminal device and the access network device and reports the LOS judgment result; the status value of 00 indicates that the terminal device uses a detection algorithm based on a neural network model to detect the channel between the terminal device and the access network device and reports the LOS probability.

[0168] Table 12

[0169]

[0170]

[0171] It should be noted that the positioning assistance information including the LOS detection trigger status can enable the terminal device to clearly know which LOS detection configuration information to specifically use to detect the LOS channel between the terminal device and the access network device.

[0172] In an optional manner, before the terminal device sends a positioning configuration request message to the positioning server, at this time, the terminal device can, after receiving the request message for the LOS detection capability information sent by the positioning server, feedback the LOS detection capability information, or the terminal device can also independently feedback the LOS detection capability information, which is not specifically limited in this application.

[0173] Among them, the LOS detection capability information may include one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported for LOS detection at a single frequency point or multiple frequency points by the terminal device, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0174] It should be noted that the device performances of different terminal devices are different. After the terminal device feeds back the LOS detection capability information to the positioning server, the positioning server can configure the LOS detection configuration information according to the detection capabilities of the terminal device.

[0175] Next, through Figure 4 exemplarily illustrate the execution process of the positioning information reporting method in this application, Figure 4 The interaction process between the UE (terminal device), gNB (serving access network device), and LMF (positioning server) is shown in the figure, and the following steps can be executed:

[0176] 400, the LMF receives a positioning request for the UE, which can be understood as being sent by a network element in the core network.

[0177] 401, the LMF requests the LOS detection capability information of the UE through the LPP protocol.

[0178] 402, the UE feeds back the LOS detection capability information to the LMF through the LPP protocol. The LOS detection capability information may include whether the UE supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported for LOS detection at a single frequency point or multiple frequency points by the UE, the LOS detection algorithms supported by the UE, and the confidence level of the LOS detection algorithms supported by the UE, etc.

[0179] 403, the LMF and the gNB exchange configuration information through the NRPPa protocol. For example, the configuration information of the positioning reference signal PRS, etc.

[0180] 404, the UE requests positioning assistance information from the LMF.

[0181] 405, the LMF feeds back the positioning assistance information to the UE through the LPP protocol. The positioning assistance information may include: the configuration information of the aperiodic PRS, the LOS detection configuration information.

[0182] 406, the LMF instructs the gNB to activate the measurement of the aperiodic PRS for the UE through the NRPPa signaling.

[0183] 407, the gNB instructs the UE to measure the aperiodic PRS through the DCI.

[0184] 408, the UE determines the positioning measurement information based on the aperiodic PRS and reports the positioning measurement information to the gNB through the physical layer.

[0185] 409, the gNB feeds back the positioning measurement information to the LMF through the NRPPa signaling.

[0186] It should be noted that after the positioning server obtains the positioning measurement result, it can know which positioning measurement result is reliable according to the LOS status information corresponding to the positioning measurement result. When the positioning server clearly knows which positioning measurement results are reliable, it is convenient to more accurately determine the position of the terminal device.

[0187] On the Figure 4 basis, the LOS detection configuration information may include various types. The LMF can indicate which LOS detection configuration information the terminal device finally adopts for LOS detection through the status value corresponding to the LOS detection configuration information. As Figure 5 shown, the executable body is as follows:

[0188] 500, the LMF receives a positioning request for the UE.

[0189] 501, the LMF requests the LOS detection capability information of the UE through the LPP protocol.

[0190] 502, the UE feeds back the LOS detection capability information to the LMF through the LPP protocol.

[0191] 503, the LMF and the gNB exchange configuration information through the NRPPa protocol.

[0192] 504, the UE requests positioning assistance information from the LMF.

[0193] 505, the LMF feeds back the positioning assistance information to the UE through the LPP protocol. The positioning assistance information may include: the configuration information of the aperiodic PRS, the LOS detection configuration information, and the LOS detection trigger status.

[0194] 506, the LMF instructs the gNB to activate the measurement of the aperiodic PRS for the UE through the NRPPa signaling.

[0195] 507, the gNB instructs the UE to measure the aperiodic PRS through the DCI.

[0196] 508, the UE detects the aperiodic PRS based on the LOS detection configuration information corresponding to the LOS detection trigger status, determines the positioning measurement information, and reports the positioning measurement information to the gNB through the physical layer.

[0197] 509, the gNB feeds back the positioning measurement information to the LMF through the NRPPa signaling.

[0198] It should be noted that there may be various types of LOS detection configuration information. The positioning assistance information including the LOS detection trigger status enables the terminal device to clearly know which specific LOS detection configuration information is used to detect the LOS channel between the terminal device and the access network device.

[0199] Based on the same concept, an embodiment of the present application provides a communication device, such as Figure 6As shown, it includes a receiving unit 601 and a transmitting unit 602. Among them, this communication device can be applied to the aforementioned terminal device, or can be the aforementioned service access network device, or can be the aforementioned access network device, or can also be the aforementioned positioning server. The receiving unit can be used to implement the sending function in the method embodiment, and the receiving unit can be used to implement the receiving function in the method embodiment. Other functions in the method embodiment can be implemented by the processing unit. The receiving unit can be implemented through the output interface in the data processing chip, and the sending unit can be implemented through the input interface in the data processing chip. The sending and receiving in the method embodiment respectively correspond to the output and input in the chip. In addition, the sending unit and the processing unit can also be implemented by the same chip, and the present application does not make specific limitations here. In addition, this communication device further includes a processing unit, and the processing unit can be implemented through a processor, etc., and the present application does not make specific limitations here.

[0200] When this communication device is a terminal device, the receiving unit 601 can be used to receive positioning reference signals from one or more access network devices; the sending unit 602 can be used to send positioning measurement information to the service access network device; the positioning measurement information includes: one or more positioning measurement results and LOS status information respectively corresponding to one or more positioning measurement results. It should also be noted that the processing unit can be based on one or more positioning measurement results determined by the positioning reference signal and LOS status information respectively corresponding to one or more positioning measurement results.

[0201] In the embodiment of the present application, the LOS status information fed back by the terminal device during positioning can indicate whether the positioning measurement result is LOS or NLOS. During positioning, according to the LOS status information corresponding to the positioning measurement result, it can be learned which positioning measurement result is reliable, which is convenient for more accurately determining the position of the terminal device.

[0202] In an optional implementation manner, there are multiple pieces of LOS status information. The multiple positioning measurement results are sorted according to the corresponding LOS probability, and the LOS status information corresponding to one or more positioning measurement results is indicated through the sorting. It should be noted that when the terminal device receives positioning reference signals from multiple access network devices, it can determine multiple positioning measurement results based on the multiple positioning reference signals. The LOS probabilities corresponding to different positioning measurement results are different, and the terminal device can agree with the service access network device in advance to only report several positioning measurement results with the top-ranked LOS probabilities.

[0203] In an optional implementation manner, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and the access network device.

[0204] In an alternative embodiment, the LOS status information includes: quality parameters of the channel between the terminal device and the access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0205] In an alternative embodiment, the sending unit 602 is further configured to send a positioning configuration request message to the positioning server; the receiving unit is further configured to receive positioning reference signal configuration information and LOS detection configuration information from the positioning server; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of the access network device for LOS detection, and indication information of the positioning reference signal for LOS detection.

[0206] It should be noted that the configuration information of the positioning reference signal includes the time-domain resource configuration information of the positioning reference signal, that is, in which time-domain resource the positioning reference signal is sent, so that the terminal device can receive the positioning reference signal in the corresponding time-domain resource. The LOS detection configuration information can indicate what algorithm the terminal device uses for LOS detection, which channels between the access network devices and the terminal device are detected, and what information is specifically reported, etc. For example, the algorithms used for LOS detection may include a consistency analysis algorithm, a detection algorithm based on a neural network model, etc., and the positioning server can indicate to the terminal device to use the consistency analysis algorithm for LOS detection through the LOS detection configuration information. The indication information of the access network device for LOS detection can be indicated by the identifier of the access network device, and the indication information of the positioning reference signal for LOS detection can be indicated by the identifier of the reference signal. Among them, which channels between the access network devices the terminal device specifically detects can be determined according to the identifier of the access network device in the LOS detection configuration information, and can also be determined by the identifier of the reference signal.

[0207] In an alternative embodiment, the receiving unit 601 is further configured to receive a first LOS detection trigger status from the positioning server, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger status; the communication device further includes a processing unit, and the processing unit is configured to determine the first LOS detection configuration information corresponding to the first LOS detection trigger status according to the first LOS detection trigger status and the corresponding relationship; detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to one or more positioning measurement results.

[0208] It should be noted that the positioning assistance information including the LOS detection trigger status can enable the terminal device to clearly know which LOS detection configuration information is specifically used to detect the LOS channel between the terminal device and the access network device.

[0209] In an alternative embodiment, the receiving unit 601 is further configured to receive indication information from a service access network device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

[0210] In an alternative embodiment, the sending unit 602 is further configured to send the LOS detection capability information of the terminal device to a positioning server; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported by the terminal device for LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0211] It should be noted that the terminal device may actively send the LOS detection capability information to the positioning server, or may send the LOS detection capability information to the positioning server when the positioning server sends a request to the terminal device. Which specific situation it is is not specifically limited in this application.

[0212] When the communication device is a service access network device, the receiving unit 601 is configured to receive positioning measurement information from the terminal device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on positioning reference signals and the LOS status information corresponding to the one or more positioning measurement results respectively; the sending unit 602 is configured to send the positioning measurement information to the positioning server.

[0213] In the embodiments of the present application, the LOS status information fed back by the terminal device during positioning can indicate whether the positioning measurement result is LOS or NLOS. During positioning, according to the LOS status information corresponding to the positioning measurement result, it can be learned which positioning measurement result is reliable, which is convenient for more accurately determining the position of the terminal device.

[0214] In an alternative embodiment, there are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and the LOS status information corresponding to the one or more positioning measurement results is indicated through the sorting. It should be noted that when the terminal device receives positioning reference signals from multiple access network devices, multiple positioning measurement results can be determined based on the multiple positioning reference signals, and the LOS probabilities corresponding to different positioning measurement results are different. The terminal device can agree with the service access network device in advance to only report several positioning measurement results with higher LOS probability rankings.

[0215] In an alternative embodiment, the LOS status information includes: the LOS decision result or LOS probability of the channel between the terminal device and the access network device.

[0216] In an alternative embodiment, the LOS status information includes: quality parameters of the channel between the terminal device and the access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

[0217] In an alternative embodiment, the receiving unit 601 is further configured to receive indication information from the positioning server; the sending unit 602 is further configured to send the indication information to the terminal device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

[0218] When the communication device is a positioning server, the receiving unit 601 is configured to determine first LOS detection configuration information corresponding to the first LOS detection trigger state according to the first LOS detection trigger state and the corresponding relationship; the processing unit is configured to detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS status information corresponding to each of the one or more positioning measurement results.

[0219] It should be noted that the positioning server can select the positioning measurement results with all LOS status information being LOS to calculate the position information of the terminal device. However, in actual applications, since the determination of the LOS status information may be misjudged, the positioning server can calculate the weights of different measurement quantities according to the LOS probability to calculate the position information of the terminal device to avoid this situation of LOS misjudgment. For example, the LOS probability corresponding to positioning measurement result 1 is 0.1, and the LOS probability corresponding to positioning measurement result 2 is 0.9. When calculating the position of the terminal device, it can be determined by f(weight value corresponding to measurement result 1 * 0.1 + weight value corresponding to measurement result 2 * 0.9), where f is the terminal calculation function.

[0220] In addition, the positioning server can also select some measurement quantities according to the LOS probability to calculate the position of the terminal. For example, the LOS probability corresponding to positioning measurement result 1 is 0.3, the LOS probability corresponding to positioning measurement result 2 is 0.9, the LOS probability corresponding to positioning measurement result 3 is 0.8, and the LOS probability corresponding to positioning measurement result 4 is 0.9. When the positioning server calculates the position of the terminal device, the positioning server can select measurement results 2, 3, and 4 with a LOS probability greater than 0.8, and calculate the position of the terminal device through the terminal calculation function.

[0221] In an alternative embodiment, the receiving unit 601 is configured to receive positioning configuration request information from the terminal device; the sending unit 602 is configured to send positioning reference signal configuration information and LOS detection configuration information to the terminal device; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of the access network device for LOS detection, indication information of the positioning reference signal for LOS detection.

[0222] It should be noted that the configuration information of the positioning reference signal includes the time-domain resource configuration information of the positioning reference signal, that is, in which time-domain resource the positioning reference signal is transmitted, so that the terminal device can receive the positioning reference signal under the corresponding time-domain resource. The LOS detection configuration information can indicate what algorithm the terminal device uses for LOS detection, which access network devices' channels between the terminal device and the terminal device are detected, and what specific information is reported, etc. For example, the algorithms used for LOS detection may include a consistency analysis algorithm, a detection algorithm based on a neural network model, etc. The positioning server can indicate to the terminal device to use the consistency analysis algorithm for LOS detection through the LOS detection configuration information. The indication information of the access network device for LOS detection can be indicated by the identifier of the access network device, and the indication information of the positioning reference signal for LOS detection can be indicated by the identifier of the reference signal. Among them, which access network devices' channels the terminal device specifically detects can be determined according to the identifier of the access network device in the LOS detection configuration information, and can also be determined by the identifier of the reference signal.

[0223] In an alternative embodiment, the sending unit 602 is further configured to send a first LOS detection trigger state to the terminal device, and there is a corresponding relationship between the LOS detection configuration information and the LOS detection trigger state, so that the terminal device determines the first LOS detection configuration information corresponding to the first LOS detection trigger state according to the state value of the first LOS detection trigger state and the corresponding relationship; detect the positioning reference signals of one or more access network devices through the first LOS detection configuration information, and determine the LOS state information corresponding to one or more positioning measurement results respectively.

[0224] It should be noted that there may be multiple types of LOS detection configuration information. Through the LOS detection trigger state, the terminal device can clearly know which LOS detection configuration information is specifically used to detect the LOS channel between the terminal device and the access network device.

[0225] In an alternative embodiment, the receiving unit 601 is further configured to receive positioning measurement information from the serving access network device; the positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and the LOS state information corresponding to the positioning measurement results respectively.

[0226] In the embodiments of the present application, the LOS state information fed back by the terminal device during positioning can indicate whether the positioning measurement result is LOS or NLOS. During positioning, according to the LOS state information corresponding to the positioning measurement result, it can be learned which positioning measurement result is reliable, which is convenient for more accurately determining the position of the terminal device.

[0227] In an alternative embodiment, there are multiple LOS status information. The multiple positioning measurement results are sorted according to the corresponding LOS probabilities, and one or more LOS status information corresponding to the positioning measurement results are indicated through the sorting. It should be noted that when the terminal device receives positioning reference signals from multiple access network devices, it can determine multiple positioning measurement results based on the multiple positioning reference signals. The LOS probabilities corresponding to different positioning measurement results are different. The terminal device can agree with the serving access network device in advance to report only several positioning measurement results with higher-ranked LOS probabilities.

[0228] In an alternative embodiment, the LOS status information includes: the LOS determination result or LOS probability of the channel between the terminal device and the access network device.

[0229] In an alternative embodiment, the LOS status information includes: the quality parameter of the channel between the terminal device and the access network device; the quality parameter includes one or more of the following: channel gain, variance, and standard deviation.

[0230] In an alternative embodiment, the receiving unit 601 is further configured to receive LOS detection capability information from the terminal device; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency point or multiple frequency points, the maximum number of channels supported by the terminal device for LOS detection at a single frequency point or multiple frequency points, the LOS detection algorithms supported by the terminal device, and the confidence levels of the LOS detection algorithms supported by the terminal device.

[0231] It should be noted that the terminal device can actively send the LOS detection capability information to the positioning server, or send the LOS detection capability information to the positioning server when the positioning server sends a request to the terminal device. Which specific situation it is is not specifically limited in this application.

[0232] In the above embodiments, the receiving unit and the sending unit can form a transceiver unit.

[0233] In addition, this application provides a communication system, including: a serving access network device and a positioning server; the serving access network device can execute the steps executed by the serving access network device above, such as forwarding positioning measurement information to the positioning server, etc. The positioning server can select one or more positioning measurement results according to the LOS status information in the positioning measurement information to determine the location information of the terminal device. Based on the same concept, as Figure 7 shown, a communication device 700 provided by this application is shown. Exemplarily, the communication device 700 can be a chip or a chip system. Optionally, in the embodiments of this application, the chip system can be composed of chips, or can include chips and other discrete devices.

[0234] The communication device 700 may include at least one processor 710. The communication device 700 may further include at least one memory 720 for storing computer programs, program instructions, and / or data. The memory 720 is coupled to the processor 710. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms for information interaction between devices, units, or modules. The processor 710 may cooperate with the memory 720. The processor 710 may execute the computer programs stored in the memory 720. Optionally, the at least one memory 720 may be integrated into the processor 710.

[0235] The communication device 700 may further include a transceiver 730. The communication device 700 may interact with other devices through the transceiver 730. The transceiver 730 may be a circuit, a bus, a transceiver, or any other device that can be used for information interaction. The transceiver 730 may include a receiver and a transmitter. The receiver may be used to implement the receiving function in the method embodiments, and the transmitter may be used to implement the transmitting function in the method embodiments. Other functions in the method embodiments may be implemented by the processor.

[0236] In a possible implementation manner, the communication device 700 may be applied to the aforementioned terminal device, or may be the aforementioned service access network device, or may also be the aforementioned positioning server. The memory 720 stores the necessary computer programs, program instructions, and / or data for implementing the functions of the network device in any of the above embodiments. The processor 710 may execute the computer programs stored in the memory 720 to complete the methods in any of the above embodiments.

[0237] In the embodiments of the present application, the specific connection medium between the transceiver 730, the processor 710, and the memory 720 is not limited. In the embodiments of the present application Figure 7 it is shown that the memory 720, the processor 710, and the transceiver 730 are connected through a bus. The bus is represented by a thick line in Figure 7 The connection manners between other components are only for illustrative purposes and are not to be construed as limiting. The bus may be divided into an address bus, a data bus, a control bus, etc. For the sake of simplicity of representation, Figure 7 only one thick line is used to represent it in

[0238] In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and may implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

[0239] In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or may also be a volatile memory, such as a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, program instructions, and / or data.

[0240] Based on the above embodiments, the embodiments of the present application further provide a readable storage medium storing instructions that, when executed, implement the methods executed by the security detection device in any of the above embodiments. The readable storage medium may include: various media that can store program code, such as a USB flash drive, a portable hard disk, a read-only memory, a random-access memory, a magnetic disk, or an optical disc.

[0241] Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0242] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0243] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0244] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operational steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0245] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the scope of protection of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. A method for reporting positioning information, applied to a terminal device, characterized in that: include: Sending positioning configuration request information to the positioning server; Receiving positioning reference signal configuration information and LOS detection configuration information from the positioning server; The LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of access network equipment detected by LOS, indication information of positioning reference signal detected by LOS; Receiving a positioning reference signal from one or more access network devices; Receiving instruction information from a service access network device; The indication information is used to instruct the terminal device to perform positioning measurement and LOS detection; Sending positioning measurement information to the service access network device; The positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and line-of-sight LOS state information respectively corresponding to the one or more positioning measurement results.

2. The method according to claim 1, characterized in that There are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to corresponding LOS probabilities, and the LOS status information corresponding to the one or more positioning measurement results is indicated by the sorting.

3. The method according to claim 1, characterized in that The LOS status information includes: the LOS judgment result or LOS probability of the channel between the terminal device and each of the access network devices.

4. The method according to claim 1, characterized in that The LOS status information includes: quality parameters of the channels between the terminal device and each of the access network devices; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

5. The method according to claim 1, characterized in that The method further comprises: Receiving a first LOS detection trigger state from the positioning server, wherein the LOS detection configuration information corresponds to the LOS detection trigger state; Determine, according to the first LOS detection trigger state and the corresponding relationship, first LOS detection configuration information corresponding to the first LOS detection trigger state; The positioning reference signals of the one or more access network devices are detected through the first LOS detection configuration information to determine the LOS state information corresponding to the one or more positioning measurement results.

6. The method according to any one of claims 1 to 5, characterized in that: Also includes: Sending the LOS detection capability information of the terminal device to the positioning server; The LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency or multiple frequencies, the maximum number of channels that the terminal device supports LOS detection at a single frequency or multiple frequencies, the LOS detection algorithm supported by the terminal device, and the confidence level of the LOS detection algorithm supported by the terminal device.

7. A terminal device, characterized in that: include: The sending unit is further used to send positioning configuration request information to the positioning server; The receiving unit is further configured to receive positioning reference signal configuration information and LOS detection configuration information from the positioning server; the LOS detection configuration information includes one or more of the following: LOS detection algorithm, indication information of access network equipment detected by LOS, and indication information of positioning reference signal detected by LOS; The receiving unit is used to receive positioning reference signals from one or more access network devices; The receiving unit is further configured to receive indication information from a service access network device; The indication information is used to instruct the terminal device to perform positioning measurement and LOS detection; The sending unit is used to send the positioning measurement information to the service access network device; The positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and line-of-sight LOS state information respectively corresponding to the one or more positioning measurement results.

8. The terminal device according to claim 7, characterized in that: There are multiple pieces of LOS status information, and the multiple positioning measurement results are sorted according to corresponding LOS probabilities, and the LOS status information corresponding to the one or more positioning measurement results is indicated by the sorting.

9. The terminal device according to claim 7, characterized in that: The LOS status information includes: a LOS decision result or a LOS probability of a channel between the terminal device and the access network device.

10. The terminal device according to claim 7, characterized in that: The LOS status information includes: quality parameters of a channel between the terminal device and the access network device; the quality parameters include one or more of the following: channel gain, variance, and standard deviation.

11. The terminal device according to claim 7, characterized in that: The receiving unit is further configured to receive a first LOS detection trigger state from the positioning server, wherein the LOS detection configuration information corresponds to the LOS detection trigger state; Determine, according to the first LOS detection trigger state and the corresponding relationship, first LOS detection configuration information corresponding to the first LOS detection trigger state; The positioning reference signals of the one or more access network devices are detected through the first LOS detection configuration information to determine the LOS state information corresponding to the one or more positioning measurement results.

12. The terminal device according to any one of claims 7 to 11, characterized in that: The sending unit is also used to send the LOS detection capability information of the terminal device to the positioning server; the LOS detection capability information includes one or more of the following: whether the terminal device supports LOS detection at a single frequency or multiple frequencies, the maximum number of channels supported by the terminal device for LOS detection at a single frequency or multiple frequencies, the LOS detection algorithm supported by the terminal device, and the confidence level of the LOS detection algorithm supported by the terminal device.

13. A service access network device, characterized in that: include: A receiving unit, used to receive positioning measurement information from a terminal device; The positioning measurement information includes: one or more positioning measurement results determined by the terminal device based on the positioning reference signal and line-of-sight LOS state information respectively corresponding to the one or more positioning measurement results; A sending unit, configured to send the positioning measurement information to a positioning server; The receiving unit is further used to receive indication information from the positioning server; The sending unit is also used to send the indication information to the terminal device; the indication information is used to instruct the terminal device to perform positioning measurement and LOS detection.

14. A communication device, characterized in that: include: at least one processor; The processor is configured to execute a computer program or instruction stored in the memory, so that the communication device executes the method according to any one of claims 1 to 6.

15. A communication system, characterized in that: include: The service access network device and positioning server as claimed in claim 13; The positioning server selects one or more positioning measurement results to determine the location information of the terminal device according to the LOS state information in the positioning measurement information.

16. A computer-readable storage medium, characterized in that: A computer program or instruction is stored, and when the computer program or instruction is executed on a computer, the computer is enabled to implement the method according to any one of claims 1 to 6.

17. A computer program product comprising a computer program or instructions, characterized in that When a computer reads and executes the computer program or instructions contained in the computer program product, the method according to any one of claims 1 to 6 is executed.

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