Information transmission method, measurement terminal, position solution terminal, device and storage medium

Abstract

The application provides an information transmission method, a measurement terminal, a position resolving terminal, a device and a storage medium. The method comprises the following steps: determining power parameters of a plurality of first paths, wherein the plurality of first paths are paths other than a first path and obtained by detecting reference signals by the measurement terminal; selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths; and transmitting measurement information of the at least one second path. The method, the measurement terminal, the position resolving terminal, the device and the storage medium provided by the application can select a second path from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, provide more effective information for positioning for a position resolving terminal, reduce the influence of noise and interference during positioning, and improve the positioning performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an information transmission method, a measurement terminal, a position solving terminal, a device and a storage medium. BACKGROUND

[0002] In wireless communication positioning, reflection and refraction of wireless signals result in multiple paths of delay arrival in addition to the first path, which is referred to as multipath phenomenon.

[0003] Under the multipath phenomenon, when the power of the first path obtained by measurement is very low relative to the powers of the remaining paths, the first path at this time may actually be noise or interference, and it is difficult to achieve good positioning effect for the first path regardless of whether a time delay or angle measurement algorithm is applied. Therefore, the measurement terminal usually needs to report not only the information of the first path but also the information of multiple paths other than the first path, thereby providing more options for the position solving terminal.

[0004] And the specific selection of which path information to report will directly affect the subsequent positioning accuracy. SUMMARY

[0005] The present application provides an information transmission method, a measurement terminal, a position solving terminal, a device and a storage medium to solve the problem of terminal positioning accuracy.

[0006] In a first aspect, an information transmission method is provided by an embodiment of the present application, and the method is applied to a measurement terminal, and the method comprises:

[0007] Determining power parameters of a plurality of first paths, the plurality of first paths being other paths than the first path obtained by the measurement terminal detecting a reference signal;

[0008] Selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths;

[0009] Sending measurement information of the at least one second path.

[0010] Optionally, according to the information transmission method of an embodiment of the present application, the selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths comprises:

[0011] Selecting at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, a multipath time interval and a time delay of the plurality of first paths;

[0012] The multipath time interval is determined based on a multipath interval length and the time delay of the first path.

[0013] Optionally, in the information transmission method according to an embodiment of the present application, the selecting at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and the multipath time interval and the time delays of the first paths comprises:

[0014] selecting at least one first candidate path from the first paths, the first candidate path being a first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval;

[0015] selecting at least one second path from the at least one first candidate path based on the time delays and / or the power parameters of the at least one first candidate path.

[0016] Optionally, in the information transmission method according to an embodiment of the present application, the selecting at least one second path from the at least one first candidate path based on the time delays and / or the power parameters of the at least one first candidate path comprises:

[0017] determining the first a number of first candidate paths in the order from small to large according to the time delays as the second paths;

[0018] or, determining the first a number of first candidate paths in the order from large to small according to the power parameters as the second paths.

[0019] Optionally, in the information transmission method according to an embodiment of the present application, when the terminal is the measuring end, the method further comprises:

[0020] receiving at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length sent by a location management function unit (LMF) and / or a base station;

[0021] or, determining at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on historical information, or based on the historical information and channel change information.

[0022] Optionally, in the information transmission method according to an embodiment of the present application, the method further comprises:

[0023] generating channel change information;

[0024] sending the channel change information to the LMF and / or the base station to trigger the LMF and / or the base station to reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0025] Optionally, according to the information transmission method of one embodiment of the present application, when the measurement end is a base station, the method further comprises:

[0026] receiving at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length sent by the positioning management function unit LMF and / or the terminal;

[0027] Alternatively, at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length is determined based on historical information, or based on the historical information and channel change information.

[0028] Optionally, according to the information transmission method of one embodiment of the present application, the method further comprises:

[0029] receiving the channel change information generated by the terminal, or generating channel change information;

[0030] sending the channel change information to the LMF to trigger the LMF to reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0031] Optionally, according to the information transmission method of one embodiment of the present application, the method further comprises:

[0032] sending the measurement information of the first path.

[0033] Optionally, according to the information transmission method of one embodiment of the present application, the measurement information comprises the power parameter, the parameter type of the power parameter comprises relative power and / or absolute power, the relative power is the ratio of the absolute power and reference power, and the reference power comprises at least one of the maximum power of all paths, the total power of all paths, and the absolute power of a specified path, the specified path being any path in the all paths.

[0034] Optionally, according to the information transmission method of one embodiment of the present application, when the parameter type of the power parameter in the measurement information comprises relative power, the measurement information further comprises the reference power to which the relative power is applied.

[0035] Optionally, according to the information transmission method of one embodiment of the present application, when the measurement end is a terminal, the measurement information of the second path further comprises at least one of the arrival time, the difference between the transmission time and the reception time, and the phase of the second path.

[0036] When the measurement end is a base station, the measurement information of the second path further comprises at least one of the arrival time, the difference between the transmission time and the reception time, the arrival angle and the phase of the second path.

[0037] In a second aspect, an information transmission method is provided. The method is applied to a position calculation terminal, and includes:

[0038] receiving measurement information of at least one second path sent by a measurement terminal, the at least one second path being selected from a plurality of first paths by the measurement terminal based on a multipath parameter threshold and a power parameter of the plurality of first paths;

[0039] positioning the terminal based on the measurement information of the at least one second path.

[0040] Optionally, the information transmission method according to an embodiment of the present application further includes:

[0041] determining at least one of a parameter type of the power parameter, the multipath parameter threshold and a multipath interval length based on historical information;

[0042] sending at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the measurement terminal.

[0043] Optionally, the information transmission method according to an embodiment of the present application, the determining at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length includes:

[0044] receiving channel change information sent by the terminal and / or a base station, and reconfiguring at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on the historical information and the channel change information.

[0045] Optionally, the information transmission method according to an embodiment of the present application further includes:

[0046] receiving measurement information of the first path sent by the measurement terminal.

[0047] Optionally, the information transmission method according to an embodiment of the present application, the measurement information includes the power parameter, the parameter type of the power parameter includes relative power and / or absolute power, the relative power is a ratio of the absolute power and reference power, and the reference power includes at least one of a maximum value of power of all paths, a total sum of power of all paths, and absolute power of a specified path, the specified path being any path in the all paths.

[0048] Optionally, the information transmission method according to an embodiment of the present application, in a case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power applied to determine the relative power.

[0049] Optionally, according to the information transmission method of an embodiment of the present application, when the measurement end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path.

[0050] When the measurement end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

[0051] In a third aspect, an embodiment of the present application further provides a measurement end, including a memory, a transceiver, and a processor.

[0052] The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0053] determining power parameters of a plurality of first paths, the plurality of first paths being other paths than a first path and obtained by the measurement end detecting a reference signal;

[0054] selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths;

[0055] sending measurement information of the at least one second path.

[0056] In a fourth aspect, an embodiment of the present application further provides a position solution end, including a memory, a transceiver, and a processor.

[0057] The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0058] receiving measurement information of at least one second path sent by a measurement end, the at least one second path being selected by the measurement end from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, the plurality of first paths being other paths than a first path and obtained by the measurement end detecting a reference signal;

[0059] positioning a terminal based on the measurement information of the at least one second path.

[0060] In a fifth aspect, an embodiment of the present application further provides an information transmission apparatus, including:

[0061] a power parameter determination unit configured to determine power parameters of a plurality of first paths, the plurality of first paths being other paths than a first path and obtained by a measurement end detecting a reference signal;

[0062] a path selecting unit, configured to select at least one second path from the plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths;

[0063] an information sending unit, configured to send measurement information of the at least one second path.

[0064] In a sixth aspect, an embodiment of the present application further provides an information transmission device, comprising:

[0065] an information receiving unit, configured to receive measurement information of at least one second path sent by a measurement terminal, the at least one second path being selected from a plurality of first paths by the measurement terminal based on a multipath parameter threshold and power parameters of the plurality of first paths, the plurality of first paths being paths other than a first path obtained by the measurement terminal detecting a reference signal;

[0066] a positioning unit, configured to position a terminal based on the measurement information of the at least one second path.

[0067] In a seventh aspect, an embodiment of the present application further provides a processor readable storage medium, which stores a computer program, and the computer program is used for making a processor execute the method provided in the first aspect or the second aspect.

[0068] The information transmission method, the measurement terminal, the position calculation terminal, the device and the storage medium provided in the embodiments of the present application select a second path from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, thereby providing more effective information for positioning for the position calculation terminal, reducing the influence of noise and interference during positioning, and improving the positioning performance. BRIEF DESCRIPTION OF DRAWINGS

[0069] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0070] Figure 1 is one of the flowcharts of the information transmission method provided in the present application;

[0071] Figure 2 is a path selection schematic diagram provided in the present application;

[0072] Figure 3 is an angle and phase acquisition method schematic diagram provided in the present application;

[0073] Figure 4Figure 2 is a flowchart of another information transmission method provided by the present application;

[0074] Figure 5 Figure 3 is a structural diagram of a measurement end provided by the present application;

[0075] Figure 6 Figure 4 is a structural diagram of a position solution end provided by the present application;

[0076] Figure 7 Figure 5 is a structural diagram of an information transmission device provided by the present application;

[0077] Figure 8 Figure 6 is a structural diagram of another information transmission device provided by the present application. DETAILED DESCRIPTION

[0078] In the embodiments of the present application, the term "and / or" is used to describe the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0079] In the embodiments of the present application, the term "multiple" means two or more, and other quantifiers are similar.

[0080] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0081] In wireless communication positioning, reflection and refraction of wireless signals will cause multiple paths of delayed arrival in addition to the first path, which is called multipath phenomenon. When the wireless channel between the signal transmitting and receiving ends is blocked by an obstacle, there will be no direct path, which is called non-line-of-sight (NLOS) phenomenon. Both multipath and non-line-of-sight phenomena will affect the positioning accuracy.

[0082] In current positioning technologies, obtaining information about the direct line of sight (LOS) is essential. For the non-linear line-of-sight (NLOS) phenomenon, its impact can be reduced through identification and elimination methods. However, for multipath propagation, when the measured first path has a very low power relative to the other paths, this first path may actually be noise or interference. For the first path, it is difficult to achieve good positioning results regardless of whether time delay or angle measurement algorithms are applied. To address this issue, related technologies propose reporting information on multiple paths in addition to the first path. This reporting has two advantages: first, it provides more options for the location calculation end, as the actual LOS path is likely contained within the reported multiple paths, which can be extracted by the location calculation end through optimization algorithms (such as the residual method); second, the reported information on multiple paths can reflect the wireless channel characteristics related to the location of the terminal to be located. For example, the information on multiple paths can contain geometric information, which corresponds to the user's location. Suitable models can be trained using artificial intelligence (AI) algorithms to obtain location results unaffected by multipath interference. However, reporting information from multiple paths raises a question: how to select paths other than the initial path for information reporting? Clearly, the path selection principles will have a significant impact on subsequent positioning.

[0083] To address this, this application provides an information transmission method applied to a measurement end in a positioning scenario. Specifically, in an uplink positioning scenario, the measurement end can be a base station; in a downlink positioning scenario, the measurement end can be a terminal; and in a combined uplink and downlink positioning scenario, there can be two measurement ends, one being a base station and the other a terminal. The method provided in the following embodiments can be applied to uplink positioning scenarios, downlink positioning scenarios, and combined uplink and downlink positioning scenarios.

[0084] Figure 1 This is one of the flowcharts illustrating the information transmission method provided in this application, such as... Figure 1 As shown, the method includes:

[0085] Step 110: Determine the power parameters of multiple first paths, wherein the multiple first paths are the paths other than the first path obtained by the measurement end detecting the reference signal.

[0086] Specifically, during positioning, the measuring end can obtain multiple paths by detecting reference signals. The multiple paths referred to here include the initial path and the first path. The initial path is the first path among the multiple paths obtained by the measuring end from detecting reference signals. Specifically, the initial path is the path that is detected by the measuring end earliest among the multiple paths. Among the multiple paths, all paths other than the initial path can be recorded as the first path.

[0087] The power parameter of each first path can be detected, and the power parameter is used to reflect the power of the first path, and can reflect the relative power of the first path, and the power parameter can be the ratio of the power of the first path to the reference power, for example, the ratio of the power of the first path to the power of the first path, and for example, the ratio of the power of the first path to the sum of the powers of all paths; the power parameter can also reflect the absolute power of the first path, and the power parameter can be the absolute power value of the first path.

[0088] It should be noted that in the uplink positioning scenario, the measurement end is a base station, the reference signal is a channel sounding reference signal (Sounding Reference Signal, SRS), and the terminal sends the SRS to the base station. The base station detects the SRS to obtain multiple paths. In the downlink positioning scenario, the measurement end is a terminal, and the reference signal is a positioning reference signal (Positioning Reference Signal, PRS). The base station sends the PRS to the terminal, and the terminal detects the PRS to obtain the related information of the multiple paths. In the uplink and downlink joint positioning scenario, the base station and the terminal are both measurement ends, the terminal sends the SRS to the base station, and the base station detects the SRS to obtain the related information of the multiple paths in the uplink. The base station sends the PRS to the terminal, and the terminal detects the PRS to obtain the related information of the multiple paths in the downlink.

[0089] In step 120, at least one second path is selected from the multiple first paths based on the multipath parameter threshold and the power parameters of the multiple first paths.

[0090] Specifically, the multipath parameter threshold is a parameter threshold of the same parameter type as the power parameter. For example, when the power parameter reflects the relative power, the multipath parameter threshold can be a value between 0 and 1. For example, when the power parameter reflects the absolute power, the multipath parameter threshold can be a value greater than 0. The multipath parameter threshold is used to select the second path from the first path, and specifically, the path with a power parameter greater than or equal to the multipath parameter threshold is selected from the first path. The second path selected based on the multipath parameter threshold has a high power itself, or the power is high compared to the power of each path. The probability of the second path being a direct path is high, and the significance of providing a positioning reference to the positioning calculation end is greater.

[0091] Through the application of the multipath parameter threshold, a simple and easy-to-implement method is provided for selecting a path other than the first path for information reporting. The second path obtained by selection is the path other than the first path that needs to report information, and the second path can be one or multiple.

[0092] Further, the multipath parameter threshold can be configured by the measurement end, configured by the transmission end of the reference signal to the measurement end, or configured by the position solving end to the measurement end. In the positioning process, the multipath parameter threshold can be fixed or reconfigured when the environment of the terminal or the state of the terminal changes, which is not limited in the embodiments of the present application.

[0093] In step 130, the measurement information of the at least one second path is sent.

[0094] Specifically, after the second path is selected, the measurement information of the second path is sent to the position solving end, so that the position solving end can position the terminal according to the measurement information of the first path and the measurement information of each second path. Since the measurement information sent by the measurement end to the position solving end is the measurement information of the second path selected based on the multipath parameter threshold, the position solving end can obtain more effective information when positioning the terminal based on the measurement information, thereby ensuring the reliability and accuracy of the terminal positioning.

[0095] The method provided by the embodiments of the present application selects the second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, thereby providing the position solving end with more effective information for positioning, reducing the influence of noise and interference during positioning, and improving the positioning performance.

[0096] Based on the above embodiments, step 120 includes:

[0097] Based on the multipath parameter threshold and the power parameters of the plurality of first paths, and the multipath time interval and the time delays of the plurality of first paths, at least one second path is selected from the plurality of first paths. The multipath time interval is determined based on the multipath interval length and the time delay of the first path.

[0098] Specifically, when selecting the second path, the first path needs to be selected not only from the energy point of view, but also from the time delay point of view, by combining the multipath parameter threshold and the power parameters of each first path, and combining the multipath time interval and the time delay of each first path.

[0099] Here, the multipath time interval reflects the maximum time range in which the effective multipath can appear after the first path. The effective multipath here is the path that can provide effective information for terminal positioning after the first path is selected. The first path is selected by combining the multipath time interval and the time delay of each first path, specifically, the first path with a time delay within the multipath time interval is selected. The second path selected in this way has a time delay within the multipath time interval, that is, the second path can be an effective multipath.

[0100] The second path is selected from the first paths in combination of energy and time delay, i.e., the first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval.

[0101] It should be noted that the multipath time interval is determined based on the multipath interval length and the time delay of the first path. Assuming that the time delay of the first path is T1 and the multipath interval length is △T, the multipath time interval can be denoted as [T1, T1+△T], wherein the time delay T1 of the first path is detected by the measurement end, and the length of the multipath time interval, i.e., the multipath interval length, can be configured by the measurement end itself, or can be configured to the measurement end by the transmission end of the reference signal, or can be configured to the measurement end by the position solving end. In the positioning process, the multipath interval length can be fixed or can be reconfigured when the environment of the terminal, the state of the terminal, or other factors change. The embodiments of the present application do not make specific limitations.

[0102] The method provided by the embodiments of the present application filters the first paths from the energy and time delay angles based on the multipath parameter threshold and the multipath time interval, thereby providing more effective information for positioning for the position solving end, reducing the influence of noise and interference in positioning, and improving the positioning performance.

[0103] Based on any of the above embodiments, step 120 comprises:

[0104] selecting at least one first candidate path from the plurality of first paths, the first candidate path being the first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval;

[0105] selecting at least one second path from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path.

[0106] Specifically, the number of paths that meet the multipath parameter threshold and the multipath time interval in energy and time delay at the same time in all the first paths can exceed the number of second paths that are sent by the measurement end to the position solving end and are previously set. In this case, the first paths that meet the multipath parameter threshold and the multipath time interval in energy and time delay at the same time need to be further selected. Herein, the first paths that meet the multipath parameter threshold and the multipath time interval in energy and time delay at the same time are denoted as candidate first paths.

[0107] After all the candidate first paths are obtained, the second paths can be selected from the candidate first paths based on the time delay and / or power of each candidate first path. For example, a preset number of paths with the smallest time delay can be selected as the second paths from all the candidate first paths, or a preset number of paths with the highest power can be selected as the second paths, or when a preset number of paths with the highest power are selected, if there are two candidate first paths with the same power, the one with the smaller time delay can be selected as the second path.

[0108] The method provided by the embodiments of the present application applies the time delay and / or power of the paths to perform secondary selection on the first paths, effectively limits the information transmission amount while providing effective information for the position solution end, and avoids waste of transmission resources.

[0109] Based on any of the above embodiments, in step 120, the at least one second path is selected from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path.

[0110] The first number of first candidate paths in the order from small to large in terms of the time delay are determined as the second paths.

[0111] Alternatively, the second number of first candidate paths in the order from large to small in terms of the power are determined as the second paths.

[0112] Specifically, when performing secondary selection on the first paths, all the first candidate paths can be sorted in the order from small to large in terms of the time delay, and the first number of first candidate paths in the sorted sequence are selected as the second paths. The second paths thus selected are the paths with smaller time delay in the first candidate paths, that is, the first number of first candidate paths with the smallest time delay are selected.

[0113] In addition, all the first candidate paths can also be sorted in the order from large to small in terms of the power, and the second number of first candidate paths in the sorted sequence are selected as the second paths. The second paths thus selected are the paths with higher power in the first candidate paths, that is, the second number of first candidate paths with the highest power are selected.

[0114] It should be noted that the first number and the second number are both preset path numbers, and specifically reflect the number of multipaths that can be reported. The first number and the second number can be equal or not equal, and the embodiments of the present application do not make a specific limitation in this regard.

[0115] Based on any of the above embodiments, in the downlink positioning scenario or the uplink-downlink joint positioning scenario, the measurement end is a terminal, and accordingly, the information transmission method further includes:

[0116] receive at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length sent by the location management function unit (LMF) and / or the base station;

[0117] Alternatively, at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length is determined based on historical information, or based on the historical information and channel change information.

[0118] Specifically, the information for selecting the second path includes the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, wherein the parameter type of the power parameter determines which power parameter is applied to select the second path, and the parameter type of the power parameter can be absolute power or relative power, or a ratio of the power of the first path to the maximum power of all paths, or a ratio of the power of the first path to the total power of all paths, etc. The multipath parameter threshold determines the threshold for selecting the second path from the perspective of energy, and the multipath interval length determines the range for selecting the second path from the perspective of time delay. The parameter type of the power parameter, the multipath parameter threshold and the multipath interval length can be configured uniformly, or can be configured separately, or any one or two of them can be configured.

[0119] For the case where the measurement end is a terminal, the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length can be configured by a position calculation end and / or a base station, and the position calculation end is specifically a location management function unit (LMF). Specifically, at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length sent by the LMF and / or the base station can be received, and the timing at which the LMF and / or the base station sends the above information can be pre-configuration before positioning, or re-configuration during positioning, which is not limited in the embodiments of the present application.

[0120] For example, the LMF can configure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length for the positioning measurement quantity of the terminal, and send at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the terminal based on the LTE positioning protocol (LPP) signaling, so as to realize pre-configuration or re-configuration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length. The positioning measurement quantity here can be downlink reference signal time difference (DL-RSTD) or terminal RX-TX time difference (UE Rx-Tx time difference), etc.

[0121] For example, the base station can send at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the terminal based on Radio Resource Control (RRC) signaling or based on physical layer signaling, so as to realize pre-configuration or re-configuration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0122] In addition, for the case where the terminal is the measurement end, at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length can be determined by the terminal itself.

[0123] Further, when the terminal pre-configures at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, the terminal can realize based on historical information. The historical information can include information of the first path detected before, i.e. information of the historical first path, such as the historical first path Signal to Interference plus Noise Ratio (SINR), the historical first path Reference Signal Receiving Power (RSRP), the historical first path Reference Signal Receiving Path Power (RSRPP). The historical first path SINR and RSRP can be obtained by windowing the Power Delay Spectrum (PDP). In addition, the historical information can also include the movement information of the terminal detected before, such as the moving speed of the terminal. For example, the terminal can configure the multipath parameter threshold based on the information of the historical first path. For another example, the terminal can configure the multipath interval length based on the historical movement information.

[0124] The terminal re-configures at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, which usually occurs in the case of channel change. At this time, the terminal can combine the historical information and the channel change information to realize re-configuration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length. For example, for the channel change caused by the change of the terminal scene, such as the terminal moving from indoor to outdoor, the multipath interval length can be shortened. For another example, for the channel change caused by the change of the terminal speed, such as the terminal suddenly accelerating after changing the vehicle, the multipath interval length can be lengthened.

[0125] Based on any of the above embodiments, in the case where the terminal is the measurement end and at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length is configured by the position calculation end and / or the base station, the method further comprises:

[0126] generating channel change information;

[0127] sending the channel change information to the LMF and / or the base station to trigger the LMF and / or the base station to reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0128] Specifically, the change of the environment in which the terminal is located, the state of the terminal itself and other factors will cause the channel to change. The terminal can monitor whether the environment in which the terminal is located, the state of the terminal itself and other factors change in real time, or whether the channel changes. If the change occurs, the terminal generates channel change information indicating the change and sends the channel change information to the LMF and / or the base station, thereby informing the LMF and / or the base station of the channel change of the terminal. After receiving the channel change information, the LMF and / or the base station triggers the reconfiguration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length. The LMF and / or the base station can generate new at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length in combination with historical information and channel change information, and send the newly generated at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the terminal, thereby realizing the reconfiguration based on the channel change.

[0129] The method provided by the embodiments of the present application reconfigures at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on the channel change information, so that the parameters for the second path selection can dynamically meet the actual situation of the measurement end, which helps to ensure the reliability of the second path selection.

[0130] Based on any of the above embodiments, in the uplink positioning scenario or the uplink and downlink joint positioning scenario, the measurement end is a base station, and accordingly, the above information transmission method further includes:

[0131] receiving at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length sent by the positioning management function unit LMF and / or the terminal;

[0132] Alternatively, at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length is determined based on historical information or based on the historical information and channel change information.

[0133] Specifically, the information for selecting the second path includes a parameter type of a power parameter, a multipath parameter threshold, and a multipath interval length. The parameter type of the power parameter determines which power parameter is used for the selection of the second path. The parameter type of the power parameter can be an absolute power or a relative power, or a ratio of the power of the first path to the maximum power of all paths, or a ratio of the power of the first path to the total power of all paths, etc. The multipath parameter threshold determines the threshold for selecting the second path from the perspective of energy. The multipath interval length determines the range for selecting the second path from the perspective of time delay. The parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length can be configured uniformly, separately, or by selecting any one or two of them.

[0134] For the case where the measurement end is a base station, the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length can be configured by a position calculation end and / or a terminal. The position calculation end is specifically a location management function unit (LMF). At least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length can be received from the LMF and / or the terminal. The timing at which the LMF and / or the terminal send the above information can be pre-configuration before positioning or re-configuration during positioning, which is not limited in the embodiments of the present application.

[0135] For example, the LMF can configure at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length for the base station, and send the at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length to the base station based on the NR positioning protocol A (NRPPa) signaling, so as to realize pre-configuration or re-configuration of the at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length. The positioning measurement quantity can be an uplink relative time of arrival (UL-RTOA) or a gNB Rx-Tx time difference, etc.

[0136] For example, the terminal can send at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length to the base station based on RRC signaling or physical layer signaling, so as to realize pre-configuration or re-configuration of the at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length.

[0137] In addition, for the case where the measurement end is a base station, at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length can be determined by the base station itself.

[0138] Further, when at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length is pre-configured by the base station, the base station can implement based on historical information. The historical information here can include information of the first path detected before, i.e. information of the historical first path, such as the SINR of the historical first path, the RSRP of the historical first path, in addition to the historical information can also include the moving information of the terminal detected before, such as the moving speed of the terminal. For example, the base station can configure the multipath parameter threshold based on the information of the historical first path, and for another example, the base station can configure the multipath interval length based on the historical moving information.

[0139] And the reconfiguration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length by the base station usually occurs in the case of channel change, at this time the base station can combine the historical information and the channel change information to implement the reconfiguration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, for example, for the channel change caused by the change of the terminal scene, such as the terminal moving from indoor to outdoor, the multipath interval length can be shortened, and for another example, for the channel change caused by the change of the terminal speed, such as the terminal suddenly accelerating by changing the vehicle, the multipath interval length can be lengthened.

[0140] Based on any of the above embodiments, in the case that the measuring end is the base station and the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length are configured by the position calculation end, the method further comprises:

[0141] Receiving the channel change information generated by the terminal, or generating the channel change information;

[0142] Sending the channel change information to the LMF to trigger the LMF to reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0143] Specifically, for the base station, the channel change information of the terminal can be detected and generated by the base station itself, or can be detected and generated by the terminal and then sent to the base station. For example, the base station can generate the channel change information by itself and send it to the LMF. For another example, the terminal can generate the channel change information and send it to the base station. After receiving the channel change information, the base station can forward the channel change information to the LMF, so as to inform the LMF of the channel change of the terminal. After receiving the channel change information, the LMF can trigger reconfiguration of at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length. The LMF can generate new at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length in combination with historical information and channel change information, and send the new at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length to the base station, so as to realize reconfiguration based on channel change.

[0144] The method provided by the embodiments of the present application reconfigures at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on channel change information, so that the parameters for second path selection can dynamically meet the actual situation of the measurement end, and the reliability of the second path selection is helped to be ensured.

[0145] Based on any of the above embodiments, the measurement information includes the power parameter, the parameter type of the power parameter includes relative power and / or absolute power, the relative power is a ratio of the absolute power and reference power, and the reference power includes at least one of a maximum power of all paths, a total power of all paths, and an absolute power of a specified path.

[0146] Here, whether it is a primary path, a first path, or a second path obtained by selecting the first path, it all belongs to multiple paths obtained by the measurement end detecting a reference signal. The measurement information of each path can be obtained by detection, and the power parameter of each path is included in the measurement information of each path. The parameter type of the power parameter can be relative power, absolute power, or both relative power and absolute power.

[0147] The absolute power is an absolute power value, that is, a measured power. The relative power is a power value relative to reference power, which is usually a ratio of the absolute power and the reference power. The reference power here can be any one of a maximum power of all paths, a total power of all paths, and an absolute power of a specified path, or a combination of any two of the maximum power of all paths, the total power of all paths, and the absolute power of the specified path, or all of the three. The embodiments of the present application do not make a specific limitation on this.

[0148] It should be noted that all the paths referred to here include the first path and the first paths, all the paths are obtained by detecting the reference signal, and the specified path can be any path in the above all paths, for example, the specified path can be the first path or any first path.

[0149] Taking the first path as an example, the parameter type of the power parameter of the first path can include at least one of the ratio of the power of the first path to the maximum power of all paths, the ratio of the power of the first path to the total power of all paths, the ratio of the power of the first path to the power of the specified path, and the power of the first path, wherein the ratio of the power of the first path to the maximum power of all paths, the ratio of the power of the first path to the total power of all paths, and the ratio of the power of the first path to the power of the specified path are relative power, and the power of the first path is absolute power.

[0150] Figure 2 is a path selection schematic diagram provided by the present application, Figure 2 in the coordinate system, the horizontal coordinate represents the delay Delay, the vertical coordinate represents the power Power, Path_1 is the first path, the position of Path_1 on the horizontal coordinate is the delay T1 of the first path, and the value of Path_1 on the vertical coordinate direction is P_first_path, which is the power of the first path. Assuming that any first path is Path_i, the value of Path_i on the vertical coordinate direction is P_i_path, which is the power of the first path, and in addition, P_max_path shown in the figure represents the maximum power of all paths.

[0151] Therefore, the parameter type of the power parameter can be represented as any one or more of the following four forms, and in the measurement information, the power parameter can include only a single parameter type or more than two parameter types:

[0152] The ratio of the power of the first path to the maximum power of all paths can be represented as:

[0153] P_i_path / P_max_path;

[0154] The ratio of the power of the first path to the total power of all paths can be represented as:

[0155] P_i_path / P_max_path, wherein P_total_path is the total power of all paths;

[0156] Assuming that the specified path is the first path, the ratio of the power of the first path to the power of the first path (i.e., the ratio of the power of the first path to the power of the specified path) can be represented as:

[0157] P_i_path / P_first_path;

[0158] The power of the first path, i.e. the absolute power value of the first path, can be expressed as:

[0159] P_i_path.

[0160] Among them, the first three types of parameters reflect the relative power size, and the last type of parameter reflects the absolute power size. The values of the multipath parameter thresholds corresponding to the first three types of parameters are between 0 and 1, and the value of the multipath parameter threshold corresponding to the last type of parameter is greater than 0.

[0161] In addition, Figure 2 The length of the multipath interval is marked as △T in the figure, and in cooperation with the time delay T1 of the first path, the multipath time interval [T1, T1+△T] can be located on the horizontal coordinate, and thus the first path with the time delay in the multipath time interval is obtained. On this basis, Figure 2 The multipath parameter threshold Threshold_T is also marked in the figure, Figure 2 The first path whose power exceeds the dotted line determined based on Threshold_T and whose time delay is in the multipath time interval [T1, T1+△T] can be selected as the second path.

[0162] Based on any of the above embodiments, in the case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes a reference power to which the relative power is applied.

[0163] Specifically, for any path, in the case where the power parameter of the relative power type is included in the measurement information of the path, in order for the position calculation end to obtain the absolute power of the path, the reference power corresponding to the relative power of the path can also be added in the measurement information, and here the reference power corresponding to the relative power, i.e. the reference power to which the relative power is applied. For example, the power parameter included in the measurement information is the ratio of the power of the path to the sum of the powers of all paths, the measurement information can also include the sum of the powers of all paths, and for example, the power parameter included in the measurement information is the ratio of the power of the path to the maximum power of all paths, the measurement information can also include the maximum power of all paths.

[0164] It should be noted that when there are at least two second paths, the parameter types of the power parameters of the second paths in the measurement information of the at least two second paths sent to the position calculation end can remain consistent, and at this time, for the at least two second paths, if the parameter type is the relative power, only one reference power corresponding to the relative power needs to be sent, and it is not necessary to send a reference power for each second path, thereby reducing the amount of data information that needs to be transmitted and saving transmission resources.

[0165] Based on any of the above embodiments, when the measuring end is a terminal, the measurement information of the second path also includes at least one of the arrival time, transmit / receive time difference, and phase of the second path;

[0166] When the measuring end is a base station, the measurement information of the second path also includes at least one of the arrival time, transmit / receive time difference, arrival angle, and phase of the second path.

[0167] Based on any of the above embodiments, when the measuring end is a terminal, the measurement information of the second path includes at least one of the power parameters, arrival time, transmit / receive time difference, and phase of the second path;

[0168] When the measuring end is a base station, the measurement information of the second path includes at least one of the following: power parameters of the second path, arrival time, transmit / receive time difference, arrival angle, and phase.

[0169] Specifically, the measurement end can use the PDP to filter out each path and regenerate the Channel Impulse Response (CIR) or Channel Frequency Response (CFR) to obtain the phase of each path on a specific subcarrier.

[0170] Furthermore, the angle and phase of the multipath can be obtained through the following steps:

[0171] 1. Window the PDP spectrum, with the window length including only the target path (including its energy dispersion), such as... Figure 3 As shown; it should be noted that the target path here refers to any second path. Figure 3 The PDP window for path_i refers to the PDP window for path_i.

[0172] 2. Regenerate CIR / CFR based on the time delay;

[0173] 3. Calculate the phase information on a specific subcarrier, or estimate the angle by performing Angle-of-Arrival (AOA) ranging.

[0174] Based on any of the above embodiments, the method further includes:

[0175] Send the measurement information of the initial diameter.

[0176] Specifically, the measurement information of the primary path can also be transmitted together with the measurement information of the second path. Here, the power parameter contained in the measurement information of the primary path and the power parameter contained in the measurement information of the second path can be the same type of parameter, that is, the reporting form of the power parameter of the primary path should be consistent with the reporting form of the power parameter of the second path. For example, the measurement information of the primary path and the measurement information of the second path both transmit absolute power, or the measurement information of the primary path and the measurement information of the second path both transmit relative power, or the measurement information of the primary path and the measurement information of the second path both transmit absolute power and relative power.

[0177] Further, in the case where the measurement information of the primary path and the measurement information of the second path both transmit relative power, the reference power corresponding to the relative power transmitted by the two should also be consistent. For example, the power parameter of the second path is the ratio of the power to the sum of the powers of all paths, and the power parameter of the primary path is also the ratio of the power to the sum of the powers of all paths.

[0178] Therefore, when transmitting relative power, if the reference power needs to be transmitted, only one reference power needs to be transmitted, and there is no need to transmit one reference power for the primary path and each second path respectively.

[0179] In addition, the power parameter contained in the measurement information of the primary path and the power parameter contained in the measurement information of the second path can also be different types of parameters. For example, the power parameter of the primary path is an absolute power, and the power parameter of the second path is a relative power.

[0180] In addition, the present application also provides an information transmission method, which is applied to a position solving end in a positioning scene, for example, can be an LMF. Figure 4 is a flowchart of the information transmission method provided by the present application, as shown in Figure 4 The method comprises the following steps:

[0181] In step 410, at least one measurement information of a second path transmitted by a measurement end is received, the at least one second path is selected from a plurality of first paths by the measurement end based on a multipath parameter threshold and a power parameter of the plurality of first paths, and the plurality of first paths are other paths obtained by the measurement end detecting a reference signal except for a primary path.

[0182] Specifically, when positioning, the measurement end can obtain a plurality of paths by detecting a reference signal. Here, the plurality of paths include a primary path and a first path. The primary path is the primary path in the plurality of paths detected by the measurement end, and the primary path is the path detected earliest by the measurement end in the plurality of paths. The other paths in the plurality of paths except for the primary path are all first paths.

[0183] For each first path, the measuring end can detect the power parameter of the first path, where the power parameter is used to reflect the power of the first path, and can reflect the relative power of the first path, and in this case, the power parameter can be the ratio of the power of the first path to the reference power, for example, the ratio of the power of the first path to the power of the first path, and for example, the ratio of the power of the first path to the sum of the powers of all paths; the power parameter can also reflect the absolute power of the first path, and in this case, the power parameter can be the absolute power value of the first path.

[0184] It should be noted that in the uplink positioning scenario, the measuring end is a base station, and the reference signal is SRS, and the terminal sends SRS to the base station, and the base station detects SRS to obtain the related information of multiple paths. In the downlink positioning scenario, the measuring end is a terminal, and the reference signal is PRS. The base station sends PRS to the terminal, and the terminal detects PRS to obtain the related information of multiple paths. In the uplink and downlink joint positioning scenario, the base station and the terminal are both measuring ends, the terminal sends SRS to the base station, and the base station detects SRS to obtain the related information of multiple paths in the uplink, and the base station sends PRS to the terminal, and the terminal detects PRS to obtain the related information of multiple paths in the downlink.

[0185] After the measuring end detects the power parameters of the multiple first paths, the measuring end can apply the power parameters of each first path and the configured multipath parameter threshold to screen the second path from the first path, and then send the measurement information of the second path to the position solving end.

[0186] Here, the multipath parameter threshold is a parameter threshold of the same parameter type as the power parameter, for example, when the power parameter reflects the relative power, the multipath parameter threshold can be a value between 0 and 1, and for example, when the power parameter reflects the absolute power, the multipath parameter threshold can be a value greater than 0. The setting of the multipath parameter threshold enables the measuring end to screen the second path from the first path, and specifically, the power parameter greater than or equal to the multipath parameter threshold can be screened from the first path. The second path obtained by screening based on the multipath parameter threshold has a high power itself, or its power is higher than the power of each path, and the probability of the second path being a direct path is higher, which provides greater significance for the positioning solving end to provide positioning reference.

[0187] Through the application of the multipath parameter threshold, a simple and easy-to-implement way is provided for the measuring end to select a path other than the first path for information reporting, and the second path obtained by selection, i.e., the path other than the first path that needs to report information, can be one or multiple.

[0188] Further, the multipath parameter threshold can be configured by the measurement terminal itself, configured by a sending terminal of the reference signal to the measurement terminal, or configured by a position solving terminal to the measurement terminal. In the positioning process, the multipath parameter threshold can be fixed, or can be reconfigured when the environment of the terminal or the state of the terminal changes, which is not limited in the embodiments of the present application.

[0189] Correspondingly, the position solving terminal can receive the measurement information of the at least one second path sent by the measurement terminal.

[0190] In step 420, the terminal is positioned based on the measurement information of the at least one second path.

[0191] Specifically, after receiving the measurement information of the at least one second path, the position solving terminal can position the terminal based on the measurement information. Since the measurement information sent by the measurement terminal to the position solving terminal is the measurement information of the second path selected based on the multipath parameter threshold, the position solving terminal can obtain more effective information when positioning the terminal based on the measurement information, thereby ensuring the reliability and accuracy of the terminal positioning.

[0192] Further, when positioning the terminal, the position solving terminal can input the received measurement information of the first path and the measurement information of the at least one second path into a pre-trained position solving model, so as to obtain a positioning result output by the position solving model. The position solving model can be constructed based on a neural network architecture such as a convolutional neural network (CNN) or a deep neural network (DNN), or can be used to judge NLOS based on the received measurement information of the first path and the measurement information of the at least one second path, and perform position solving based on the judgment result. In addition, the received measurement information of the first path and the measurement information of the at least one second path can be used for fingerprint matching in a fingerprint database, so as to realize position solving, which is not limited in the embodiments of the present application.

[0193] The method provided by the embodiments of the present application enables the position solving terminal to obtain more effective information for positioning by selecting the second path from the plurality of first paths based on the multipath parameter threshold and the power parameter of the plurality of first paths, reduces the influence of noise and interference in positioning, and improves the positioning performance.

[0194] Based on the above embodiments, the method further includes:

[0195] Based on the historical information, at least one of the following is determined: a parameter type of the power parameter, the multipath parameter threshold, and a multipath interval length.

[0196] sending the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length to the measurement terminal.

[0197] Specifically, the measurement terminal is configured to select the information of the second path, including the type of the power parameter, the multipath parameter threshold and the multipath interval length, wherein the type of the power parameter determines which power parameter is used for the selection of the second path, and the type of the power parameter can be an absolute power or a relative power, or a ratio of the power of the first path to the maximum power of all paths, or a ratio of the power of the first path to the total power of all paths, etc. The multipath parameter threshold determines the threshold for selecting the second path from the perspective of energy, and the multipath interval length determines the range for selecting the second path from the perspective of time delay. The type of the power parameter, the multipath parameter threshold and the multipath interval length can be uniformly configured by the position calculation terminal, or can be respectively configured by the position calculation terminal, or can be selected by the position calculation terminal to configure any one or two of them. The configuration here can be pre-configuration before positioning, or re-configuration during positioning, and the embodiments of the present application do not make specific limitations on this.

[0198] Before sending the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length to the measurement terminal, the position calculation terminal needs to determine the value of the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length. The position calculation terminal can determine the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length based on historical information. The historical information can include the information of the first path received before, i.e. the information of the historical first path, such as the historical first path SINR and the historical first path RSRP, and in addition, the historical information can also include the movement information of the terminal before, such as the movement speed of the terminal. For example, the position calculation terminal can configure the multipath parameter threshold based on the information of the historical first path, and for another example, the position calculation terminal can configure the multipath interval length based on the historical movement information.

[0199] Taking the position calculation terminal as an LMF, and for the case that the measurement terminal is a terminal, the LMF can send the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length to the terminal through LPP signaling, so as to realize the pre-configuration or re-configuration of the at least one of the type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0200] For the case that the measurement end is a base station, the LMF can send at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the base station based on the NRPPa signaling, so as to realize pre-configuration or re-configuration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length.

[0201] Based on any of the above embodiments, the determining at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length comprises:

[0202] Receiving channel change information sent by the terminal and / or the base station, and reconfiguring at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on the historical information and the channel change information.

[0203] Specifically, the change of the environment in which the terminal itself is located, the state of the terminal itself and other factors will all cause channel changes. The terminal can monitor whether the environment in which the terminal itself is located, the state of the terminal itself and other factors change in real time, or whether the channel changes. If there is a change, the terminal generates channel change information indicating the change, and sends the channel change information to the position solving end, so as to inform the position solving end of the channel change of the terminal. In addition, the terminal can also generate channel change information indicating the change, and send the channel change information to the base station. After receiving the channel change information, the base station can forward the channel change information to the position solving end, so as to inform the position solving end of the channel change of the terminal.

[0204] After receiving the channel change information, the position solving end triggers reconfiguration of at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, generates new at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length, and sends the newly generated at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the measurement end, so as to realize reconfiguration based on channel changes.

[0205] When reconfiguring, the position solving end can combine historical information and channel change information, for example, for channel changes caused by changes in the terminal scene, such as the terminal moving from indoors to outdoors, the position solving end can shorten the multipath interval length, and for example, for channel changes caused by changes in the terminal speed, such as the terminal suddenly accelerating after changing vehicles, the position solving end can lengthen the multipath interval length.

[0206] The method provided by the embodiments of the present application reconfigures at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on channel change information, so that the parameters used for second path selection can dynamically meet the actual situation of the measurement end, which helps to ensure the reliability of the second path selection.

[0207] According to any of the above embodiments, the measurement information includes the power parameter, the parameter type of the power parameter includes relative power and / or absolute power, the relative power is a ratio of the absolute power and reference power, and the reference power includes at least one of a maximum power of all paths, a total power of all paths, and an absolute power of a specified path, the specified path being any path of the all paths.

[0208] Here, whether it is a first path, a first path, or a second path obtained by selecting the first path, it belongs to a plurality of paths obtained by detecting a reference signal at a measurement end, the measurement information of each path can be obtained by detection, and the measurement information of each path includes the power parameter of the corresponding path. The parameter type of the power parameter can be relative power, absolute power, or both relative power and absolute power.

[0209] The absolute power is an absolute power value, that is, the power obtained by measurement; the relative power is a power value relative to the reference power, which is usually a ratio of the absolute power and the reference power. The reference power here can be any one of the maximum power of all paths, the total power of all paths, and the absolute power of a specified path, or a combination of any two of the maximum power of all paths, the total power of all paths, and the absolute power of a specified path, or all of the above. The embodiments of the present application do not make specific limitations.

[0210] It should be noted that the all paths referred to here include the first path and the first path, and all paths are obtained by detecting a reference signal, and the specified path can be any path in the above all paths, for example, the specified path can be the first path or any first path.

[0211] Taking the first path as an example, the parameter type of the power parameter of the first path is at least one of the ratio of the power of the first path to the maximum power of all paths, the ratio of the power of the first path to the total power of all paths, the ratio of the power of the first path to the power of the specified path, and the power of the first path. The ratio of the power of the first path to the maximum power of all paths, the ratio of the power of the first path to the total power of all paths, and the ratio of the power of the first path to the power of the specified path are relative power, and the power of the first path is absolute power.

[0212] Reference Figure 2 The parameter type of the power parameter can be any one or more of the following four forms, and the measurement information can include only a single parameter type of the power parameter, or can include two or more parameter types of the power parameter:

[0213] The ratio of the power of the first path to the maximum power of all paths can be expressed as:

[0214] P_i_path / P_max_path;

[0215] The ratio of the power of the first path to the total power of all paths can be expressed as:

[0216] P_i_path / P_max_path, where P_total_path is the total power of all paths.

[0217] Assuming the specified path is the first path, the ratio of the power of the first path to the power of the first path (i.e., the ratio of the power of the first path to the power of the specified path) can be expressed as:

[0218] P_i_path / P_first_path;

[0219] The power of the first path, i.e., the absolute power value of the first path, can be expressed as:

[0220] P_i_path.

[0221] Among them, the first three types of parameters reflect the relative power size, and the last type of parameter reflects the absolute power size. The values of the multipath parameter thresholds corresponding to the first three types of parameters are between 0 and 1, and the value of the multipath parameter threshold corresponding to the last type of parameter is greater than 0.

[0222] Based on any of the above embodiments, in the case where the parameter type of the power parameter in the measurement information includes a relative power, the measurement information further includes a reference power to which the relative power is applied.

[0223] Specifically, for any path, in the case where the measurement information of the path contains a power parameter of a relative power type, in order to facilitate the position calculation end to obtain the absolute power of the path, the reference power corresponding to the relative power of the path can also be added to the measurement information, and the reference power corresponding to the relative power here is the reference power to which the relative power is applied. For example, the power parameter contained in the measurement information is the ratio of the power of the path to the total power of all paths, the measurement information can also contain the total power of all paths, and for example, the power parameter contained in the measurement information is the ratio of the power of the path to the maximum power of all paths, the measurement information can also contain the maximum power of all paths.

[0224] It should be noted that when there are at least two second paths, the power parameters of each second path in the measurement information of the at least two second paths sent by the measurement terminal received by the position solution terminal can be of the same type, and in this case, for the at least two second paths, if the type is relative power, only one reference power corresponding to the relative power needs to be sent, and no reference power needs to be sent for each second path, thereby reducing the amount of data to be transmitted and saving transmission resources.

[0225] Based on any of the above embodiments, when the measurement terminal is a terminal, the measurement information of the second path further includes at least one of the arrival time, the difference between the transmission time and the reception time, and the phase of the second path.

[0226] When the measurement terminal is a base station, the measurement information of the second path further includes at least one of the arrival time, the difference between the transmission time and the reception time, the angle of arrival, and the phase of the second path.

[0227] Based on any of the above embodiments, when the measurement terminal is a terminal, the measurement information of the second path includes at least one of the power parameter, the arrival time, the difference between the transmission time and the reception time, and the phase of the second path.

[0228] When the measurement terminal is a base station, the measurement information of the second path includes at least one of the power parameter, the arrival time, the difference between the transmission time and the reception time, the angle of arrival, and the phase of the second path.

[0229] Specifically, the measurement terminal can filter each path through PDP, regenerate CIR or CFR, and thereby obtain the phase of each path on a specific subcarrier.

[0230] Based on any of the above embodiments, the method further includes:

[0231] Receiving the measurement information of the first path sent by the measurement terminal.

[0232] Specifically, the measurement information of the first path can be received at the same time as the measurement information of the second path. The power parameter included in the measurement information of the first path and the power parameter included in the measurement information of the second path can be of the same type, that is, the transmission form of the power parameter of the first path should be consistent with the transmission form of the power parameter of the second path. For example, the measurement information of the first path and the measurement information of the second path both transmit absolute power, or the measurement information of the first path and the measurement information of the second path both transmit relative power, or the measurement information of the first path and the measurement information of the second path both transmit absolute power and relative power.

[0233] Further, in the case that the measurement information of the first path and the second path both transmit relative power, the reference power corresponding to the relative power transmitted by both should also be consistent, for example, the power parameter of the second path is the ratio of the power to the sum of the power of all paths, and the power parameter of the first path is also the ratio of the power to the sum of the power of all paths.

[0234] Therefore, when transmitting relative power, if the reference power needs to be transmitted, only one reference power needs to be transmitted, and there is no need to transmit one reference power for the first path and each second path respectively.

[0235] In addition, the power parameter contained in the measurement information of the first path and the power parameter contained in the measurement information of the second path can also be different parameter types, for example, the parameter type of the power parameter of the first path is absolute power, and the parameter type of the power parameter of the second path is relative power.

[0236] Based on any of the above embodiments, in the downlink positioning scenario, the measurement end is a terminal, the position calculation end is an LMF, and the base station, the terminal and the LMF perform the following operations respectively:

[0237] Base station side:

[0238] Step 1: transmit PRS signals;

[0239] Terminal side:

[0240] Step 1: receive the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length notified by the LMF;

[0241] Step 2: receive PRS signals;

[0242] Step 3: combine the PRS pilot to estimate the time of arrival (TOA), and according to the obtained multipath parameter threshold T and multipath interval length ΔT, select the first path whose power parameter P_i_path / P_max_path exceeds the multipath parameter threshold T in the multipath time interval [T1, T1+△T] as the second path, and the delay of the first path is the smallest N paths; it should be noted that T1 is the estimated delay of the first path, T1+△T is the maximum delay of the path which can be selected as the second path. △T is the multipath interval length, and the maximum value of △T is less than the cyclic prefix (CP) length, which is related to the actual geometric environment;

[0243] Step 4: report the delay, relative power (i.e. P_i_path / P_max_path) and other information of each second path selected in step 3 to the LMF as measurement information;

[0244] In addition, the relative power of the first path (i.e., P_i_path / P_max_path) in step 4 can also be reported to the LMF.

[0245] LMF side:

[0246] Step 1: The LMF generates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length according to the historical first path RSRPP, the historical first path SINR, and the prior information such as the scene where the terminal is located, and notifies the UE of the pre-defined parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length through the LPP protocol. The value range of the multipath parameter threshold is 0-1; the calculation method of the multipath parameter threshold can be to convert the known historical first path DL-SINR into a linear value such as S / N, and then the multipath parameter threshold is taken as N / S+Bias, where S represents the signal, N represents the noise, and Bias is an adjustment amount; the multipath interval length can be estimated according to the RSRPP of the historical first path to estimate the approximate range of the propagation delay.

[0247] Step 2: Receive the measurement information of the first path and at least one second path sent by the terminal, and calculate the position by using the trained CNN model.

[0248] In addition, in the subsequent positioning process, if the scene where the terminal is located changes, for example, from indoor movement to outdoor, the terminal generates channel change information and sends it to the LMF, the LMF re-calculates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length, and notifies the terminal of the updated values through the LPP protocol, the terminal updates the multipath parameter threshold and the multipath interval length, and performs measurement and positioning.

[0249] Based on any of the above embodiments, in the uplink positioning scenario, the measurement end is a base station, the position calculation end is an LMF, and the terminal is a target terminal that needs to be positioned. The base station, the terminal, and the LMF perform the following operations respectively:

[0250] Terminal side:

[0251] Step 1: Send an SRS signal;

[0252] Base station side:

[0253] Step 1: Receive the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length notified by the LMF;

[0254] Step 2: Receive the SRS signal;

[0255] Step 3: combine the SRS pilot, and according to the obtained multipath parameter threshold T and the multipath interval length AT, select the first path in the multipath time interval [T1, T1+ AT] whose power parameter P_i_path / P_total_path exceeds the multipath parameter threshold T, and the first N paths with the largest power as the multipath to be reported, i.e., the second path; it should be noted that T1 is the estimated first path delay, T1+ AT is the maximum path delay that can be selected as the second path. AT is the multipath interval length, and the maximum value of AT is less than the CP length, which is related to the actual geometric environment;

[0256] Step 4: report the delay, relative power (i.e., P_i_path / P_total_path), angle, phase, etc. of each second path selected in step 3 to the LMF as measurement information;

[0257] In addition, in step 4, the relative power (i.e., P_i_path / P_total_path) of the first path can also be reported to the LMF.

[0258] LMF side:

[0259] Step 1: the LMF generates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length according to the prior information such as the historical first path RSRPP, the historical first path SINR, and the scene where the terminal is located, and notifies the TRP (Transmit and Receive Point) of the pre-defined parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length through the NRPPa protocol. The value range of the multipath parameter threshold is 0-1; the calculation method of the multipath parameter threshold can be to convert the known historical first path Channel State Information (CSI)-SINR into a linear value such as S / N, and then the multipath parameter threshold is taken as N / S+ Bias, where S represents the signal, N represents the noise, and Bias is an adjustment amount; the multipath interval length is estimated according to the historical first path RSRPP, and the maximum value is less than the CP length, which is related to the actual geometric environment;

[0260] Step 2: receive the measurement information of the first path and at least one second path, and calculate the position using the trained DNN model.

[0261] In addition, in the subsequent positioning process, the terminal changes from walking to riding, and the terminal speed suddenly changes from 3 km / h to 30 km / h. At this time, the terminal re-calculates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length, and performs measurement and positioning.

[0262] Based on any of the above embodiments, in the downlink positioning scenario, the measurement end is the terminal, and the position calculation end is the LMF. When the preset parameter type is the absolute power, whether to generate and reconfigure the parameter type of the power parameter can be determined according to the requirement. At this time, the base station, the terminal and the LMF perform the following operations respectively:

[0263] Base station side:

[0264] Step 1: According to the historical first-path RSRPP, the historical first-path SINR and the prior information about the scenario where the terminal is located, the multipath parameter threshold and the multipath interval length are generated, and are notified to the terminal through RRC signaling.

[0265] Step 2: PRS signal is sent.

[0266] Terminal side:

[0267] Step 1: The multipath parameter threshold and the multipath interval length notified by the base station are received.

[0268] Step 2: PRS signal is received.

[0269] Step 3: TOA estimation is performed in combination with the PRS pilot, and according to the obtained multipath parameter threshold T and multipath interval length AT, the first N paths with the smallest time delay among the paths whose power parameters P_i_path exceed the multipath parameter threshold T in the multipath time interval [T1, T1+AT] are selected as the multipaths, i.e., the second paths, that need to be reported. It should be noted that T1 is the estimated first-path time delay, T1+AT is the maximum time delay of the paths that can be selected as the second paths. AT is the multipath interval length, and the maximum value of AT is less than the CP length and is related to the actual geometric environment. The unit of P_i_path is dBm, and the multipath parameter threshold can be calculated according to the historical first-path DL-PRS-RSRPP. For example, if DL-PRS-RSRPP=a, the multipath parameter threshold is a+Bias, where Bias is an adjustment amount.

[0270] Step 4: The time delay, absolute power (i.e., P_i_path) and the like of each second path selected in step 3 are reported to the LMF as measurement information.

[0271] In addition, in step 4, the absolute power (i.e., P_i_path) of the first path can also be reported to the LMF.

[0272] LMF side:

[0273] Step 1: The measurement information of the first path and at least one second path sent by the terminal is received, and NLOS judgment is performed.

[0274] Step 2: Position calculation is performed through a traditional positioning method.

[0275] In the subsequent positioning process, the terminal changes from walking to taking a car, the terminal speed suddenly changes from 3km / h to 30km / h, at this time the terminal recalculates the multipath parameter threshold and the multipath interval length, and performs measurement and positioning.

[0276] Based on any of the above embodiments, in the uplink and downlink joint positioning scenario, the terminal and the base station are both measurement ends, and the position solving end is the LMF. The base station, the terminal and the LMF perform the following operations respectively:

[0277] Base station side:

[0278] Step 1: send PRS signal;

[0279] Step 2: receive SRS signal;

[0280] Step 3: combine SRS pilot, and determine the multipath parameter threshold T and the multipath interval length AT according to the historical first path UL-SRS-RSRPP, the historical first path CSI-SINR and the prior information such as the scenario where the terminal is located, select the first N paths with the maximum power among the first paths whose power parameter P_i_path / P_first_path exceeds the multipath parameter threshold T in the multipath time interval [T1, T1+AT] as the multipath to be reported, i.e. the second path; it should be noted that T1 is the estimated first path delay, T1+AT is the maximum path delay that can be selected as the second path. AT is the multipath interval length, and the maximum value of AT is less than the CP length, which is related to the actual geometric environment;

[0281] Step 4: generate the TRP transmission-reception time difference by subtracting the transmission time from the reception time of the N+1 paths, and report it, at the same time, the power, phase and angle of the receiving path corresponding to the above time difference also need to be reported.

[0282] Terminal side:

[0283] Step 1: receive PRS signal;

[0284] Step 2: TOA estimation is combined with PRS pilot, and the multipath parameter threshold T' and the multipath interval length AT' are determined according to the historical first path DL-PRS-RSRPP, historical first path CSI-SINR and the prior information such as the scene where the terminal is located. It should be noted that the multipath parameter threshold and the multipath interval length configured by the base station side and the terminal side can be the same or different in the joint positioning scene. In the multipath time interval [T1', T1'+ AT'], the first path with the power parameter P_i_path / P_first_path exceeding the multipath parameter threshold T' is selected, and the first N paths with the largest power are selected as the multipath, i.e. the second path. It should be noted that T1' is the estimated first path delay, T1'+ AT' is the maximum path delay that can be selected as the second path. AT' is the multipath interval length, and the maximum value of AT' is less than the CP length, which is related to the actual geometric environment.

[0285] Step 3: Send SRS signal;

[0286] Step 4: Calculate the terminal transmission time difference by subtracting the receiving time from the sending time of the N+1 paths, and report it. At the same time, the power (i.e. P_i_path / P_first_path), phase and angle of the receiving path corresponding to the time difference also need to be reported.

[0287] LMF side:

[0288] Step 1: Receive the transmission time difference of N+1 paths reported by the terminal and the base station, and the power, phase and angle information of the receiving path corresponding to the time difference, and calculate the position by fingerprint matching combined with the fingerprint database.

[0289] In the subsequent positioning process, the UE scene changes from indoor movement to outdoor. At this time, the UE will inform the LMF of the change, and the LMF will recalculate the multipath decision threshold type, threshold value and multipath interval length, and will update the values to the UE through the LPP protocol. The UE updates the threshold and time length, and performs measurement and positioning.

[0290] Based on any of the above embodiments, in the downlink positioning scene, the terminal and the base station are both measurement ends, and the position calculation end is the LMF. The base station, the terminal and the LMF perform the following operations respectively:

[0291] Base station side:

[0292] Step 1: Send PRS signal;

[0293] Terminal side:

[0294] Step 1: Receive the power parameter type, multipath parameter threshold and multipath interval length notified by the LMF;

[0295] Step 2: Receive PRS signal;

[0296] Step 3: TOA estimation is performed in combination with PRS pilot, and according to the obtained multipath parameter threshold and multipath interval length, the first N paths with the smallest time delay among the paths whose parameter type P_i_path / P_max_path exceeds the threshold value in the time period [T1, T1+△T] are selected as the multipaths to be reported, i.e., the second paths; it should be noted that T1 is the estimated first-path time delay, and T1+△T is the maximum time delay of the second paths that can be selected;

[0297] Step 4: the relative power 10log10(P_first_path / P_max_path) dB of the first path, the time delay and relative power 10log10(P_i_path / P_max_path) dB of each second path selected in Step 3, and the maximum power of all paths, i.e., the absolute power (P_max_path, corresponding to DL-PRS-RSRPPmax) of the strongest path, etc. are reported to the LMF as measurement information;

[0298] LMF side:

[0299] Step 1: the LMF generates the parameter type, multipath parameter threshold and multipath interval length of the power parameter according to the historical first-path RSRP and prior information about the scene where the user is located, and notifies the terminal of the predefined multipath parameter threshold T through the LPP protocol, the threshold value ranges from 0 to 1; (the calculation method of the path parameter threshold T is to convert the known DL-SINR into a linear value such as S / N, and the threshold value is taken as N / S+Bias, where N / S can be a linear value or a dB value, and Bias is an adjustment amount; the multipath interval length can be estimated according to the historical first-path RSRP to obtain the approximate span of the propagation time delay);

[0300] Step 2: receive the measurement information of the first path and N second paths, and calculate the position using the trained convolutional neural network (CNN) model.

[0301] Based on any of the above embodiments, in the uplink positioning scenario, the measurement end is a base station, the position solving end is an LMF, and the terminal is a target terminal to be positioned, and the base station, the terminal and the LMF perform the following operations respectively:

[0302] Terminal side:

[0303] Step 1: send an SRS signal;

[0304] Base station side:

[0305] Step 1: receive the parameter type, multipath parameter threshold and multipath interval length of the power parameter notified by the LMF;

[0306] Step 2: receive the SRS signal;

[0307] Step 3: Combine the SRS pilot, and according to the obtained multipath parameter threshold T and multipath interval length AT, select the first N paths with the largest power in each first path whose power parameter P_i_path / P_total_path exceeds the multipath parameter threshold T in the multipath time interval [T1, T1+AT] as the multipath to be reported, i.e., the second path. It should be noted that T1 is the estimated first path delay, T1+AT is the maximum path delay that can be selected as the second path. AT is the multipath interval length, and the maximum value of AT is less than the CP length, which is related to the actual geometric environment.

[0308] Step 4: Report the relative power 10log10(P_i_path / P_total_path) dB of the first path, the delay of each second path selected in step 3, the relative power 10log10(P_i_path / P_total_path) dB, the power sum of all paths (i.e., P_total_path, corresponding to UL-SRS-RSRP), angle, phase, etc. to the LMF as measurement information.

[0309] LMF side:

[0310] Step 1: The LMF generates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length according to the historical first path RSRP, the historical first path SINR, and the prior information such as the scene where the terminal is located, and notifies the TRP (Transmit and Receive Point) of the pre-defined parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length through the NRPPa protocol. The value range of the multipath parameter threshold is 0-1. The calculation method of the multipath parameter threshold can be that the known historical first path UL-SRS-RSRP 1st path / UL-SRS-RSRP=a, and the threshold value is taken as a+Bias, where a can be a linear value or a dB value, and Bias is an adjustment amount. The multipath interval length is estimated according to the historical first path RSRP to obtain the approximate range of the propagation delay, and the maximum value is less than the CP length, which is related to the actual geometric environment.

[0311] Step 2: Receive the measurement information of the first path and at least one second path, and calculate the position using the trained DNN model.

[0312] In addition, in the subsequent positioning process, the terminal changes from walking to riding, and the terminal speed suddenly changes from 3 km / h to 30 km / h. At this time, the terminal re-calculates the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length, and performs measurement and positioning.

[0313] Figure 5This is a schematic diagram of the measuring end provided in this application, as shown below. Figure 5 As shown, the measurement terminal includes a memory 520, a transceiver 500, and a processor 510.

[0314] Memory 520 is used to store computer programs; transceiver 500 is used to send and receive data under the control of the processor; processor 510 is used to read the computer programs in the memory and perform the following operations:

[0315] Determine the power parameters of multiple first paths, wherein the multiple first paths are other paths besides the first path obtained by detecting the reference signal at the measurement end;

[0316] Based on the multipath parameter threshold and the power parameters of the plurality of first paths, at least one second path is selected from the plurality of first paths;

[0317] Send measurement information for the at least one second path.

[0318] Among them, Figure 5 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 510 and memory represented by memory 520 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 500 can be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media.

[0319] The processor 510 is responsible for managing the bus architecture and general processing, while the memory 520 can store the data used by the processor 510 when performing operations.

[0320] Alternatively, the processor 510 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0321] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0322] Optionally, the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0323] the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0324] the multipath time interval is determined based on a multipath interval length and the delay of the first path.

[0325] Optionally, the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0326] the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0327] the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0328] Optionally, the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0329] the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0330] the selecting the at least one second path from the first paths based on the multipath parameter threshold and the power parameters of the first paths, and a multipath time interval and the delays of the first paths comprises:

[0331] Optionally, when the measuring end is a terminal, the method further comprises:

[0332] receiving at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length sent by a location management function unit (LMF) and / or a base station;

[0333] or, determining at least one of the parameter type of the power parameters, the multipath parameter threshold and the multipath interval length based on historical information, or based on the historical information and channel change information.

[0334] Optionally, the method further comprises:

[0335] generating channel change information;

[0336] sending the channel change information to the LMF and / or base station to trigger the LMF and / or base station to reconfigure at least one of a type of the power parameter, the multipath parameter threshold, and the multipath interval length of the power parameter.

[0337] Optionally, when the measuring end is a base station, further comprising:

[0338] receiving at least one of a type of the power parameter, the multipath parameter threshold, and the multipath interval length of the power parameter sent by a positioning management function unit LMF and / or a terminal;

[0339] Alternatively, determining at least one of a type of the power parameter, the multipath parameter threshold, and the multipath interval length of the power parameter based on historical information, or based on the historical information and channel change information.

[0340] Optionally, further comprising:

[0341] receiving channel change information generated by the terminal, or generating channel change information;

[0342] sending the channel change information to the LMF to trigger the LMF to reconfigure at least one of a type of the power parameter, the multipath parameter threshold, and the multipath interval length of the power parameter.

[0343] Optionally, further comprising:

[0344] sending the measurement information of the first path.

[0345] Optionally, the measurement information includes the power parameter, a type of the power parameter includes relative power and / or absolute power, the relative power is a ratio of the absolute power and reference power, and the reference power includes at least one of a maximum value of power of all paths, a total sum of power of all paths, and absolute power of a specified path, the specified path being any path in the all paths.

[0346] Optionally, when the type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power to which the relative power is applied.

[0347] Optionally, when the measuring end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path.

[0348] When the measuring end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

[0349] It should be noted that the above measurement end provided by the embodiments of the present application can realize all the method steps realized by the method embodiments of the execution subject being the measurement end, and achieve the same technical effects. The same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail.

[0350] Figure 6 is a structural schematic diagram of the position solution end provided by the present application, as shown in Figure 6 The position solution end includes a memory 620, a transceiver 600, and a processor 610.

[0351] The memory 620 is configured to store a computer program; the transceiver 600 is configured to transceive data under the control of the processor 610; and the processor 610 is configured to read the computer program in the memory 620 and perform the following operations:

[0352] receive measurement information of at least one second path sent by the measurement end, the at least one second path being selected from a plurality of first paths by the measurement end based on a multipath parameter threshold and a power parameter of the plurality of first paths, the plurality of first paths being other paths than the first path obtained by the measurement end detecting a reference signal;

[0353] position the terminal based on the measurement information of the at least one second path.

[0354] Specifically, the transceiver 600 is configured to receive and send data under the control of the processor 610.

[0355] In the above Figure 6 , the bus architecture can include any number of interconnected buses and bridges, which are specifically linked together by various circuits of the processor 610 representing one or more processors and the memory 620 representing the memory. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art, and thus will not be described further herein. The bus interface provides an interface. The transceiver 600 can be a plurality of elements, i.e., including a transmitter and a receiver, which provide units for communicating with various other devices on transmission media, including wireless channels, wired channels, optical cables, and other transmission media.

[0356] The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 610 in performing operations.

[0357] Optionally, the processor 610 can be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0358] The processor is configured to execute any of the methods provided by the embodiments of the present application by invoking the computer program stored in the memory.

[0359] Optionally, the method further comprises:

[0360] Optionally, the method further comprises:

[0361] Optionally, the method further comprises:

[0362] Optionally, the method further comprises:

[0363] Optionally, the method further comprises:

[0364] Optionally, the method further comprises:

[0365] Optionally, the method further comprises:

[0366] Optionally, the measurement information comprises the power parameter, and the parameter type of the power parameter comprises relative power and / or absolute power, the relative power being a ratio of the absolute power and reference power, the reference power comprising at least one of a maximum value of power of all paths, a total sum of power of all paths, and absolute power of a specified path, the specified path being any path in the all paths.

[0367] Optionally, when the parameter type of the power parameter in the measurement information comprises relative power, the measurement information further comprises reference power to which the relative power is applied.

[0368] Optionally, when the measurement end is a terminal, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path.

[0369] Optionally, when the measurement end is a base station, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

[0370] It should be noted that the above position calculation end provided by the embodiments of the present application can realize all the method steps realized by the method embodiments of the above execution subject being the position calculation end, and can achieve the same technical effects, and the same parts and beneficial effects of the method embodiments in the embodiments will not be described in detail.

[0371] Figure 7 is one of the structural schematic diagrams of the information transmission device provided by the present application, as shown in Figure 7 The device comprises:

[0372] The power parameter determination unit 710 is configured to determine power parameters of a plurality of first paths, the plurality of first paths being other paths than the first path obtained by detecting a reference signal at the measurement end.

[0373] The path selection unit 720 is configured to select at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths.

[0374] The information sending unit 730 is configured to send measurement information of the at least one second path.

[0375] Optionally, the path selection unit 720 is configured to:

[0376] select at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, and a multipath time interval and time delays of the plurality of first paths.

[0377] The multipath time interval is determined based on a multipath interval length and the time delays of the first path.

[0378] Optionally, the path selection unit 720 comprises:

[0379] The candidate path selection subunit is configured to select at least one first candidate path from the plurality of first paths, the first candidate path being a first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval.

[0380] The second path selection subunit is configured to select at least one second path from the at least one first candidate path based on the time delay and / or the power of the at least one first candidate path.

[0381] Optionally, the second path selection subunit is configured to:

[0382] determine the first quantity of first candidate paths in front in the order of the time delay from small to large as the second path.

[0383] Or, determine the second quantity of first candidate paths in front in the order of the power from large to small as the second path.

[0384] Optionally, when the measurement end is a terminal, the information transmission device further comprises a first configuration unit configured to:

[0385] receive at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length sent by the location management function unit (LMF) and / or a base station.

[0386] Or, determine at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on historical information or based on the historical information and channel change information.

[0387] Optionally, the information transmission device further comprises a first channel change sending unit configured to:

[0388] generate channel change information.

[0389] send the channel change information to the LMF and / or the base station to trigger the LMF and / or the base station to reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length.

[0390] Optionally, when the measurement end is a base station, the information transmission device further comprises a second configuration unit configured to:

[0391] receive at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length sent by the location management function unit (LMF) and / or a terminal.

[0392] Or, determine at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on historical information or based on the historical information and channel change information.

[0393] Optionally, the information transmission device further comprises a second channel change sending unit configured to:

[0394] receive channel change information generated by the terminal or generate channel change information.

[0395] send the channel variation information to the LMF to trigger the LMF to reconfigure at least one of a parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length of the power parameter.

[0396] Optionally, the information transmission apparatus further comprises a first path sending unit, configured to:

[0397] send the measurement information of the first path.

[0398] Optionally, the measurement information comprises the power parameter, and the parameter type of the power parameter comprises relative power and / or absolute power, the relative power being a ratio of the absolute power to reference power, the reference power comprising at least one of a maximum value of power of all paths, a total sum of power of all paths, and absolute power of a specified path, the specified path being any path in the all paths.

[0399] Optionally, in a case where the parameter type of the power parameter in the measurement information comprises the relative power, the measurement information further comprises reference power to which the relative power is applied.

[0400] Optionally, in a case where the measurement end is a terminal, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path.

[0401] Optionally, in a case where the measurement end is a base station, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

[0402] Specifically, the above information transmission apparatus provided by the embodiments of the present application can implement all the method steps achieved by the method embodiments of the above execution subject being the measurement end, and achieve the same technical effects. Here, the same parts and beneficial effects in the embodiments and the method embodiments will not be described in detail.

[0403] Figure 8 is a structural schematic diagram of the information transmission apparatus provided by the present application, as shown in Figure 8 the apparatus comprises:

[0404] an information receiving unit 810, configured to receive measurement information of at least one second path sent by a measurement end, the at least one second path being selected by the measurement end from a plurality of first paths based on a multipath parameter threshold and a power parameter of the plurality of first paths, the plurality of first paths being other paths than a first path detected by the measurement end from a reference signal.

[0405] The positioning unit 820 is configured to position the terminal based on the measurement information of the at least one second path.

[0406] Optionally, the information transmission apparatus further comprises a third configuration unit configured to:

[0407] The configuration determination unit is configured to determine at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on the historical information.

[0408] The third configuration unit is configured to send at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length to the measurement end.

[0409] Optionally, the configuration determination unit is configured to:

[0410] receive channel change information sent by the terminal and / or the base station, and reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold and the multipath interval length based on the historical information and the channel change information.

[0411] Optionally, the information transmission apparatus further comprises a first path receiving unit configured to:

[0412] receive the measurement information of the first path sent by the measurement end.

[0413] Optionally, the measurement information comprises the power parameter, the parameter type of the power parameter comprises relative power and / or absolute power, the relative power is a ratio of the absolute power and reference power, and the reference power comprises at least one of a maximum value of power of all paths, a total sum of power of all paths, and absolute power of a specified path, the specified path being any path in the all paths.

[0414] Optionally, in the case that the parameter type of the power parameter in the measurement information comprises the relative power, the measurement information further comprises reference power applied by the relative power.

[0415] Optionally, in the case that the measurement end is a terminal, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path.

[0416] In the case that the measurement end is a base station, the measurement information of the second path further comprises at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

[0417] Specifically, the information transmission device provided by the embodiment of the present application can realize all the method steps achieved by the method embodiment of the position calculation end as the execution subject, and achieve the same technical effects. Here, the same parts and beneficial effects in the method embodiment will not be described in detail.

[0418] It should be noted that the division of units / modules in the above embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, another division manner can be used. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0419] When the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0420] Optionally, the embodiment of the present application further provides a processor-readable storage medium, which stores a computer program. The computer program is used to make the processor execute the method provided by each of the above embodiments, including:

[0421] Determine power parameters of a plurality of first paths, the plurality of first paths being other paths than the first path and obtained by the measurement end detecting reference signals;

[0422] Select at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths;

[0423] Send measurement information of the at least one second path.

[0424] Or comprising: receiving measurement information of at least one second path sent by a measurement terminal, the at least one second path being selected by the measurement terminal from a plurality of first paths based on a multipath parameter threshold and a power parameter of the plurality of first paths, the plurality of first paths being other paths than the first path obtained by the measurement terminal detecting a reference signal;

[0425] Positioning the terminal based on the measurement information of the at least one second path.

[0426] It should be noted that the processor readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to a magnetic storage (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO) and the like), an optical storage (such as a CD, a DVD, a BD, a HVD and the like), and a semiconductor storage (such as a ROM, an EPROM, an EEPROM, a non-volatile memory (NAND FLASH), a solid state disk (SSD)) and the like.

[0427] In addition, it should be noted that the technical solutions provided by the embodiments of the present application can be applied to various systems, especially 5G systems. For example, the applicable systems can be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, long term evolution advanced (LTE-A) system, universal mobile system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new radio (NR) system, etc. Among these various systems, there are terminal devices and network devices. The system can also include a core network part, such as evolved packet system (EPS), 5G system (5GS), etc.

[0428] The terminal referred in embodiments of the present application can be a device that provides voice and / or data connectivity to users, handheld devices having wireless connection capability, or other processing devices connected to a wireless modem, etc. In different systems, the terminal can also be called by different names, such as user equipment (UE) in a 5G system. The wireless terminal can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal can be a mobile terminal, such as a mobile telephone (also known as a "cellular" telephone) and a computer with a mobile termination, e.g., a portable, pocket, handheld, computer-included or car-mounted mobile device, which can access a wireless access network to exchange language and / or data. For example, personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), etc. The wireless terminal can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, etc. in embodiments of the present application, which are not limited.

[0429] The base station according to embodiments of the present application can include a plurality of cells that provide services for terminals. The base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminals through one or more sectors over an air interface, or other names, according to different application scenarios. The base station can be used to exchange received air frames and Internet Protocol (IP) packets as a router between the wireless terminal and the rest of the access network, which can include an Internet Protocol (IP) communication network. The base station can also coordinate the management of the properties of the air interface. For example, the base station according to embodiments of the present application can be a base station (Base Transceiver Station, BTS) in the Global System for Mobile Communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a base station (NodeB) in Wide-band Code Division Multiple Access (Wide-band Code Division Multiple Access, WCDMA), or an evolved base station (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, or a 5G base station (gNB) in a next generation system (next generation system), or a home evolved base station (Home evolved Node B, HeNB), a relay node, a femto, a pico, etc. The embodiments of the present application are not limited. In some network structures, the base station can include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit can also be arranged geographically apart.

[0430] The base station and the terminal can each use one or more antennas for Multi Input Multi Output (Multi Input Multi Output, MIMO) transmission, and the MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multiple User MIMO (Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or can be diversity transmission or precoding transmission or beamforming transmission, etc.

[0431] Those skilled in the art will appreciate that embodiments of the present application can be readily used as software, hardware, or a combination of software and hardware. In one

[0432] The present application is described in reference to the flow diagrams and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flow diagrams and / or block diagrams, and combinations of blocks in the flow diagrams and / or block diagrams, can be implemented by computer executable instructions. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0433] These processor-executable instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable data devices to generate computer-implemented processes, thus the instructions executed on the computer or other programmable devices provide steps for implementing the flow diagrams and / or block diagrams. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0434] These processor-executable instructions can also be loaded onto a computer or other programmable data processing devices, so that a series of operational steps are performed on the computer or other programmable data devices to generate computer-implemented processes, thus the instructions executed on the computer or other programmable devices provide steps for implementing the flow diagrams and / or block diagrams. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks. Figure 1 one or more functions specified in the flow diagram and / or block diagram block or blocks.

[0435] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the present application fall within the scope of the claims and their equivalents, it is intended to include these modifications and variations.

Claims

1. A method of information transmission, characterized in that, The method is applied to a measurement end, and the method comprises: determining power parameters of a plurality of first paths, the plurality of first paths being paths other than a primary path detected by the measurement end for a reference signal; selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths; sending measurement information of the at least one second path; the selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths comprises: selecting at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, a multipath time interval and time delays of the plurality of first paths; the multipath time interval is determined based on a multipath interval length and the time delay of the primary path; when the measurement end is a terminal, the method further comprises: determining at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length based on historical information and channel change information; or when the measurement end is a base station, the method further comprises: determining at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length based on the historical information and channel change information.

2. The information transmission method according to claim 1, characterized by, the selecting at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, a multipath time interval and time delays of the plurality of first paths comprises: selecting at least one first candidate path from the plurality of first paths, the first candidate path being a first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval; selecting at least one second path from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path.

3. The information transmission method according to claim 2, characterized by, the selecting at least one second path from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path comprises: determining a first quantity of first candidate paths in a front rank in terms of the time delay from small to large as the second path; or determining a second quantity of first candidate paths in a front rank in terms of the power from large to small as the second path.

4. The information transmission method of claim 1, wherein, further comprising: generating channel change information; sending the channel change information to an LMF and / or a base station to trigger the LMF and / or the base station to reconfigure at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length.

5. The information transmission method of claim 1, wherein, further comprising: receiving channel change information generated by the terminal or generating channel change information; sending the channel change information to an LMF to trigger the LMF to reconfigure at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length.

6. The information transmission method of claim 1, wherein, further comprising: sending measurement information of the primary path.

7. The information transmission method according to any one of claims 1 to 3 and 6, characterized by, The measurement information includes the power parameter, and a parameter type of the power parameter includes relative power and / or absolute power, the relative power being a ratio of the absolute power and reference power, the reference power including at least one of a power maximum of all paths, a power sum of all paths, and an absolute power of a specified path, the specified path being any path in the all paths.

8. The information transmission method of claim 7, wherein, In a case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power used to determine the relative power.

9. The information transmission method of claim 7, wherein, In a case where the measurement end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path. In a case where the measurement end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

10. An information transmission method characterized by comprising: The method is applied to a position solution end, and the method includes: receiving measurement information of at least one second path sent by a measurement end, the at least one second path being selected by the measurement end from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, the plurality of first paths being other paths than a first path of a reference signal detected by the measurement end; positioning a terminal based on the measurement information of the at least one second path; wherein the method further includes: determining at least one of a parameter type of the power parameter, the multipath parameter threshold, and a multipath interval length based on historical information; sending at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length to the measurement end; wherein the determining at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length includes: receiving channel change information sent by the terminal and / or a base station, and reconfiguring at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on the historical information and the channel change information.

11. The information transmission method of claim 10, wherein, further including: receiving measurement information of the first path sent by the measurement end.

12. The information transmission method of any one of claims 10-11, wherein, The measurement information includes the power parameter, and a parameter type of the power parameter includes relative power and / or absolute power, the relative power being a ratio of the absolute power and reference power, the reference power including at least one of a power maximum of all paths, a power sum of all paths, and an absolute power of a specified path, the specified path being any path in the all paths.

13. The information transmission method of claim 12, wherein, In a case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power used to determine the relative power.

14. The information transmission method of claim 12, wherein, In a case where the measurement end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path. In a case where the measurement end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

15. A measuring end, characterized by include a memory, a transceiver, and a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations: determining power parameters of a plurality of first paths, the plurality of first paths being paths other than a primary path detected by the measuring end in detecting a reference signal; selecting at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths; sending measurement information of the at least one second path; wherein the selecting at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths comprises: selecting at least one second path from the plurality of first paths based on the multipath parameter threshold, the power parameters of the plurality of first paths, a multipath time interval and a time delay of the plurality of first paths; wherein the multipath time interval is determined based on a multipath interval length and the time delay of the primary path, wherein the measuring end is a terminal, determining at least one of a parameter type of the power parameters, the multipath parameter threshold or the multipath interval length based on historical information and channel change information; or wherein the measuring end is a base station, determining at least one of the parameter type of the power parameters, the multipath parameter threshold or the multipath interval length based on the historical information and channel change information.

16. The measuring end of claim 15, wherein, the selecting at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, and a multipath time interval and a time delay of the plurality of first paths comprises: selecting at least one first candidate path from the plurality of first paths, the first candidate path being a first path whose power parameter is greater than or equal to the multipath parameter threshold and whose time delay is within the multipath time interval; selecting at least one second path from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path.

17. The measuring tip of claim 16, wherein, the selecting at least one second path from the at least one first candidate path based on the time delay and / or power of the at least one first candidate path comprises: determining a first number of first candidate paths in front in an order from small to large in the time delay as the second path; or determining a second number of first candidate paths in front in an order from large to small in the power as the second path.

18. The measuring end of claim 17, wherein, further comprising: generating channel change information; sending the channel change information to an LMF and / or a base station to trigger the LMF and / or the base station to reconfigure at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length.

19. The measuring tip of claim 18, wherein, further comprising: receiving channel change information generated by the terminal or generating channel change information; sending the channel change information to the LMF to trigger the LMF to reconfigure at least one of a parameter type of the power parameters, the multipath parameter threshold and the multipath interval length.

20. The measuring end of claim 15, wherein, further comprising: sending measurement information of the primary path.

21. The measuring end of any one of claims 15 to 17 and 20, wherein, The measurement information includes the power parameter, and a parameter type of the power parameter includes relative power and / or absolute power, the relative power being a ratio of the absolute power and reference power, the reference power including at least one of a power maximum of all paths, a power sum of all paths, and an absolute power of a specified path, the specified path being any path in the all paths.

22. The measuring end of claim 21, wherein, In a case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power used to determine the relative power.

23. The measuring tip of claim 21, wherein, In a case where the measurement end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path. In a case where the measurement end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, an angle of arrival, and a phase of the second path.

24. A position solution end, characterized by The apparatus includes a memory, a transceiver, and a processor. The memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: receive measurement information of at least one second path sent by a measurement end, the at least one second path being selected by the measurement end from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, the plurality of first paths being other paths than a first path obtained by the measurement end detecting a reference signal; perform positioning on a terminal based on the measurement information of the at least one second path; determine at least one of a parameter type of the power parameter, the multipath parameter threshold, and a multipath interval length based on historical information; send at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length to the measurement end; wherein the determination of at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length includes: receive channel change information sent by the terminal and / or a base station, and reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on the historical information and the channel change information.

25. The position solution engine of claim 24, wherein, Further include: receive measurement information of the first path sent by the measurement end.

26. The position solution according to any one of claims 24-25, wherein, The measurement information includes the power parameter, and a parameter type of the power parameter includes relative power and / or absolute power, the relative power being a ratio of the absolute power and reference power, the reference power including at least one of a power maximum of all paths, a power sum of all paths, and an absolute power of a specified path, the specified path being any path in the all paths.

27. The position solution engine of claim 26 wherein, In a case where the parameter type of the power parameter in the measurement information includes the relative power, the measurement information further includes reference power used to determine the relative power.

28. The position solution engine of claim 26 wherein, In a case where the measurement end is a terminal, the measurement information of the second path further includes at least one of a time of arrival, a time difference of transmission and reception, and a phase of the second path. When the measurement end is a base station, the measurement information of the second path further includes at least one of a time of arrival, a time difference between transmission and reception, an angle of arrival, and a phase of the second path.

29. An information transmission apparatus, characterized by comprising: The method comprises: determining, by a power parameter determination unit, power parameters of a plurality of first paths, the plurality of first paths being paths other than a first path and obtained by the measurement end detecting a reference signal; selecting, by a path selection unit, at least one second path from the plurality of first paths based on a multipath parameter threshold and the power parameters of the plurality of first paths; sending, by an information sending unit, measurement information of the at least one second path; the path selection unit is configured to: select at least one second path from the plurality of first paths based on the multipath parameter threshold and the power parameters of the plurality of first paths, a multipath time interval, and a time delay of the plurality of first paths; the multipath time interval is determined based on a multipath interval length and the time delay of the first path; when the measurement end is a terminal, the information transmission device further comprises a first configuration unit configured to: determine at least one of a parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on historical information and channel change information; or when the measurement end is a base station, the information transmission device further comprises a second configuration unit configured to: determine at least one of a parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on historical information and channel change information.

30. An information transmission apparatus, characterized by comprising: The method comprises: receiving, by an information receiving unit, measurement information of at least one second path sent by a measurement end, the at least one second path being selected by the measurement end from a plurality of first paths based on a multipath parameter threshold and power parameters of the plurality of first paths, the plurality of first paths being paths other than a first path and obtained by the measurement end detecting a reference signal; positioning, by a positioning unit, a terminal based on the measurement information of the at least one second path; the information transmission device further comprises a third configuration unit configured to: determine, by a configuration determination unit, at least one of a parameter type of the power parameter, the multipath parameter threshold, and a multipath interval length based on historical information; the third configuration unit is configured to send, to the measurement end, at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length; the configuration determination unit is configured to: receive channel change information sent by the terminal and / or a base station, and reconfigure at least one of the parameter type of the power parameter, the multipath parameter threshold, and the multipath interval length based on the historical information and the channel change information.

31. A processor-readable storage medium, comprising: The processor-readable storage medium stores a computer program for causing the processor to execute the method of any one of claims 1 to 14.

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