CN116800360A

CN116800360A - Channel path loss estimation method, device, equipment and storage medium

Info

Publication number: CN116800360A
Application number: CN202210263701.9A
Authority: CN
Inventors: 赵奕晨; 丁芹; 郑婷婷; 曹艳艳; 王文超; 陈晓艺; 穆家松
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2023-09-22

Abstract

The embodiment of the application provides a channel path loss estimation method, a device, equipment and a storage medium, wherein the method comprises the following steps: for each emission angle in at least one preset emission angle of a directional emission antenna, obtaining the emission power of an emission signal under the emission angle, and at least one signal receiving power and at least one signal receiving time delay under the emission angle; determining the received power of the repeated received signals according to the acquired signal received power and the signal received time delay; determining a correction factor of channel path loss according to the received power of the repeated received signals; the correction factor is a value for compensating for a channel path loss error; and determining the channel path loss according to the acquired transmitting power, the signal receiving power and the correction factor of the channel path loss, thereby improving the estimation accuracy of the channel path loss.

Description

Channel path loss estimation method, device, equipment and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for estimating channel path loss.

Background

Currently, in wireless communication technology, frequency allocation is generally involved, where frequency allocation refers to a process of listing a specific frequency band into a frequency allocation table, and specifying that the frequency band is available for one or more terrestrial or spatial radio or radio astronomical services under specified conditions. An important issue considered in frequency allocation is channel path loss, which is the loss generated by radio wave propagation in space, caused by radiation spread of transmit power and propagation characteristics of the channel, reflecting the variation of the power average of the received signal in a macroscopic range. In order for a receiving station to be able to receive a high quality signal, the greater the channel path loss between the transmitting station and the receiving station, the higher the power of the transmitter must be. Accurate estimation of channel path loss is therefore important.

In the prior art, when calculating the channel path loss, because the channel path loss of the signal is larger, a high-gain directional antenna is generally used to collect wireless channel parameters, such as the transmitting power of the transmitting signal, the receiving power of the receiving signal, and the like, and calculate the channel path loss according to the wireless channel parameters. That is, a wireless signal is transmitted using a directional transmitting antenna at a transmitting station, a wireless signal is received using a directional receiving antenna at a receiving station, and the transmission power of the transmission signal and the reception power of the reception signal can be acquired, and the channel path loss can be estimated from the transmission power of the transmission signal and the reception power of the reception signal. In the related art, the difference between the transmission power of all the transmission signals transmitted at a plurality of transmission angles and the reception power of all the reception signals received at a plurality of reception angles is generally used as the value of the channel path loss. However, when the directional antenna of the transmitting station transmits a radio signal at a certain transmission angle, since the directional receiving antenna receives a signal within a reception angle range corresponding to a certain reception angle, the signal of the same propagation path may be repeatedly received at a different reception angle when the signal is received. That is, after the directional receiving antenna receives the signal of the propagation path at the first receiving angle, the directional receiving antenna may also receive the signal of the propagation path in the receiving range corresponding to the second receiving angle. In addition, when signals are transmitted at different transmission angles, objects in the environment can refract or reflect the signals, so that the signals transmitted at different transmission angles can propagate on the same propagation path, and at the moment, the directional receiving antenna can also repeatedly receive the signals of the same propagation path. Thus, when the received power of the received signal is collected, there is a problem of re-collecting the signals of the same propagation path, and when calculating the channel path loss, the received power of the signal of one propagation path is calculated a plurality of times. That is, the received power of one propagation path is originally calculated only once, but since the signal of the propagation path may be repeatedly received a plurality of times, there is a case where the received powers of the signals of the same propagation path are calculated a plurality of times when the channel path loss is calculated, resulting in inaccurate estimation value of the channel path loss. For example, assume that a transmitting station transmits a wireless signal at a certain transmission angle, and the transmission power is a; the directional antenna of the receiving station receives the signal once at the receiving angle 1, the receiving power is B, the directional antenna can also receive the signal at the receiving angle 2, the receiving power is C, and the propagation paths of the signals received twice are the same. When calculating the channel path loss, the received power of the signal of the propagation path is calculated only once, but since the signal of the propagation path is repeatedly received, the received power B and the received power C are calculated, and the calculated received power is higher than the actual received power. That is, when calculating the channel path loss, the value of the channel path loss is estimated by the difference between the transmission power of all the transmitted signals transmitted at a plurality of transmission angles and the reception power of all the received signals received at a plurality of reception angles, and then the corresponding transmission power a is calculated only once for the signal of the propagation path, but the reception power of the signal of the propagation path is calculated twice, and then the estimated channel path loss value is lower than the actual channel path loss value, and the estimated value of the channel path loss is inaccurate.

Disclosure of Invention

In view of the above, the present application provides a method, apparatus, device and storage medium for estimating channel path loss, so as to solve the problem of inaccurate estimation value of channel path loss caused by repeated calculation of received power of the same propagation path in the prior art.

In a first aspect, an embodiment of the present application provides a method for estimating channel path loss, including:

for each emission angle in at least one preset emission angle of a directional emission antenna, obtaining the emission power of an emission signal under the emission angle, and at least one signal receiving power and at least one signal receiving time delay under the emission angle; the at least one signal reception power includes a reception power at which the directional reception antenna receives a signal at each of at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle;

determining the received power of the repeated received signals according to the acquired signal received power and the signal received time delay;

determining a correction factor of channel path loss according to the received power of the repeated received signals; the correction factor is a value for compensating a channel path loss error;

And determining the channel path loss according to the acquired transmitting power, the signal receiving power and the correction factor of the channel path loss.

Preferably, the determining the received power of the repeated received signal according to the obtained received power of the signal and the signal receiving delay includes:

determining whether at least two received signals are received according to the acquired signal received power;

if at least two received signals are received, determining whether repeated received signals exist in the at least two received signals according to the signal receiving time delay of the at least two received signals;

if the at least two received signals have the repeatedly received signals, determining a target received signal and at least one repeatedly received signal in the repeatedly received signals, and determining the received power of the at least one repeatedly received signal.

Preferably, the determining whether there is a repeatedly received signal in the at least two received signals according to the signal receiving delays of the at least two received signals includes:

determining whether the difference value between every two signal receiving delays is larger than a preset time threshold according to the signal receiving delays of the at least two received signals;

If the difference value between the at least two signal receiving delays is not greater than the preset time threshold, determining that the received signals corresponding to the at least two signal receiving delays, of which the difference value is not greater than the preset time threshold, are repeatedly received signals.

Preferably, the method further comprises:

and if the difference value between the receiving time delays of every two signals is larger than a preset time threshold value, determining that the received signals are not repeatedly received in the received at least two signals.

if at least two received signals are received, determining an emission angle detection range corresponding to each emission angle in at least one preset emission angle, and a receiving angle detection range corresponding to each receiving angle in at least one preset receiving angle;

according to a first preset sequence, determining a target emission angle detection range from the emission angle detection ranges corresponding to at least one preset emission angle;

according to a second preset sequence, determining a target receiving angle detection range from the receiving angle detection ranges corresponding to the at least one preset receiving angle;

Determining whether there are at least two first received signals among the at least two received signals; the first received signal is a signal transmitted in the target transmission angle detection range and received in the target reception angle detection range;

if at least two first received signals exist, determining whether the at least two first received signals have repeated received signals or not according to the signal receiving time delay of the at least two first received signals;

if the at least two first received signals have the repeatedly received signals, determining a target received signal and at least one repeatedly received signal in the repeatedly received signals, and determining the received power of the at least one repeatedly received signal;

determining whether the target receiving angle detection range is the last receiving angle detection range according to a second preset sequence;

if the target receiving angle detection range is not the last receiving angle detection range, updating the next receiving angle detection range of the target receiving angle detection range into the target receiving angle detection range according to a second preset sequence, and re-executing the steps to determine whether at least two first receiving signals exist in the at least two receiving signals until determining whether the target receiving angle detection range is the last receiving angle detection range according to the second preset sequence until determining that the target receiving angle detection range is the last receiving angle detection range;

If the target receiving angle detection range is the last receiving angle detection range, determining whether the target transmitting angle detection range is the last transmitting angle detection range according to a first preset sequence;

if the target transmitting angle detection range is not the last transmitting angle detection range, updating the next transmitting angle detection range of the target transmitting angle detection range to the target transmitting angle detection range according to a first preset sequence, and repeatedly executing the steps to determine a target receiving angle detection range in a receiving angle detection range corresponding to at least one preset receiving angle according to a second preset sequence until determining whether the target transmitting angle detection range is the last transmitting angle detection range according to the first preset sequence until the target transmitting angle detection range is the last transmitting angle detection range.

Preferably, the method further comprises:

if at least two first received signals are not present, determining that no repeated received signals exist in the received first received signals, or

And if the difference value between every two signal receiving time delays in the signal receiving time delays of at least two first receiving signals is larger than a preset time threshold value, determining that the received at least two first receiving signals have no repeated received signals.

Preferably, the determining the target received signal and the at least one repeated received signal in the repeated received signals includes:

among the repeatedly received signals, according to the received power of the repeatedly received signals, determining the received signal with the largest received power in the repeatedly received signals as a target received signal;

at least one of the repeated received signals other than the target received signal is determined as at least one repeated received signal.

In a second aspect, an embodiment of the present application provides an apparatus for estimating a channel path loss, including:

the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the transmission power of a transmission signal under at least one preset transmission angle of a directional transmission antenna, and acquiring the at least one signal receiving power and at least one signal receiving time delay under the transmission angle; the at least one signal reception power includes a reception power at which the directional reception antenna receives a signal at each of at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle;

The processing unit is used for determining the received power of the repeated received signal according to the acquired signal received power and the signal received time delay;

the processing unit is also used for determining a correction factor of channel path loss according to the received power of the repeated received signals; the correction factor is a value for compensating a channel path loss error;

and the processing unit is also used for determining the channel path loss according to the acquired transmitting power, the signal receiving power and the correction factor of the channel path loss.

Preferably, the processing unit is specifically configured to determine whether at least two received signals are received according to the acquired signal received power;

Preferably, the processing unit is specifically configured to determine, according to the signal receiving delays of the at least two received signals, whether a difference between each two signal receiving delays is greater than a preset time threshold;

Preferably, the processing unit is further configured to determine that no signal received repeatedly is received in the at least two received signals if the difference between the receiving delays of the two signals is greater than a preset time threshold.

Preferably, the processing unit is further configured to determine that there is no signal received repeatedly in the received first received signals if there are at least two first received signals, or

Preferably, the processing unit is specifically configured to determine, among the repeatedly received signals, a received signal with the largest received power among the repeatedly received signals as a target received signal according to the received power of the repeatedly received signal;

In a third aspect, an embodiment of the present application provides an electronic device, including:

a processor and a memory storing a computer program which, when executed, causes the electronic device to perform the method of any of the first aspects above.

In a fourth aspect, an embodiment of the present application provides a storage medium, where the storage medium includes a stored program, where the program, when executed, controls a device in which the storage medium is located to perform the method of any one of the first aspects.

When the scheme provided by the embodiment of the application is adopted, when the channel path loss is estimated, the value of the channel path loss is calculated according to the transmitting power and the receiving power, so that the transmitting power of a transmitting signal under at least one preset transmitting angle of a directional transmitting antenna is firstly obtained for each transmitting angle of the transmitting angles, and at least one signal receiving power and at least one signal receiving time delay under the transmitting angles. Wherein the at least one signal reception power comprises a reception power at which the directional reception antenna receives a signal at each of the at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle. Since there may be a case where signals of the same propagation path are repeatedly received, it is necessary to determine the received power of the repeatedly received signal from the received power of the signals acquired at least one preset transmission angle. And because the time delays of the signals of the same propagation path are similar, the channel path loss estimation device can determine the received power of the repeated received signals according to the acquired signal received power and the signal received time delay. That is, the reception delays of the signals are obtained, the reception delays are compared in pairs, the reception delays are determined to be similar, the reception signals corresponding to the similar reception delays are determined to be the repeatedly received signals, and then the reception power of the repeatedly received signals is determined according to the reception power of the repeatedly received signals. After the received power of the repeated received signal is obtained, a correction factor of the channel path loss can be determined based on the received power of the repeated received signal to compensate for the channel path loss error due to repeated calculation of the received power of the signal of the same propagation path. For example, the accumulated value of the received power of the repeated received signal may be determined as the value of the correction factor of the channel path loss. After determining the correction factor of the channel path loss, the channel path loss may be determined according to the obtained transmission power, the signal receiving power and the correction factor of the channel path loss. For example, the difference between the acquired transmit power and the signal received power may be calculated first, and then the value of the correction factor is added, and the final calculation result is taken as the value of the channel path loss. Thus, in the embodiment of the present application, when estimating the channel path loss, instead of directly taking the difference between the transmit power and the receive power as the value of the channel path loss, in order to avoid the error of the channel path loss caused by the receive power of the repeated received signal, the channel path loss device may determine the receive power of the repeated received signal according to the signal receive power and the signal receive delay, and determine the correction factor of the channel path loss according to the receive power of the repeated received signal, so as to compensate the channel path loss error. And then determining the channel path loss according to the acquired transmitting power, the signal receiving power and the channel path loss correction factor, thereby improving the accuracy of channel path loss estimation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flow chart of a method for estimating channel path loss according to an embodiment of the present application;

fig. 2 is a flow chart of another method for estimating channel path loss according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a channel path loss estimation device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one way of describing an association of associated objects, meaning that there may be three relationships, e.g., a and/or b, which may represent: the first and second cases exist separately, and the first and second cases exist separately. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Before describing embodiments of the present application in detail, terms applied or likely to be applied to the embodiments of the present application will be explained first.

Directional antenna: it means an antenna which is particularly strong in transmitting and receiving electromagnetic waves in a certain direction or directions, and which is zero or very small in transmitting and receiving electromagnetic waves in other directions. The purpose of adopting the directional transmitting antenna is to increase the effective utilization rate of the radiation power and the confidentiality; the main purpose of using directional receiving antennas is to increase the signal strength and increase the interference immunity.

Path loss: the propagation loss is referred to as loss generated by the propagation of electric waves in space, and is caused by radiation diffusion of transmitting power and propagation characteristics of a channel, and reflects the change of the power average value of received signals in a macroscopic range.

In the related art, the difference between the transmission power of all the transmission signals transmitted at a plurality of transmission angles and the reception power of all the reception signals received at a plurality of reception angles is generally used as the value of the channel path loss. However, when the directional antenna of the transmitting station transmits a radio signal at a certain transmission angle, since the directional receiving antenna receives a signal within a reception angle range corresponding to a certain reception angle, the signal of the same propagation path may be repeatedly received at a different reception angle when the signal is received. That is, after the directional receiving antenna receives the signal of the propagation path at the first receiving angle, the directional receiving antenna may also receive the signal of the propagation path in the receiving range corresponding to the second receiving angle. In addition, when signals are transmitted at different transmission angles, since objects in the environment cause refraction or reflection to the signals, the signals transmitted at different transmission angles may propagate on the same propagation path, and thus, the directional receiving antenna may also repeatedly receive signals of the same propagation path. Thus, when the received power of the received signal is collected, there is a problem of re-collecting the signals of the same propagation path, and when calculating the channel path loss, the received power of the signal of one propagation path is calculated a plurality of times. That is, the received power of one propagation path is originally calculated only once, but since the signal of the propagation path may be repeatedly received a plurality of times, when calculating the channel path loss, the received power of the signal of the same propagation path is calculated a plurality of times, resulting in inaccurate estimation value of the channel path loss.

In the embodiment of the application, when estimating the channel path loss, since the value of the channel path loss needs to be calculated according to the transmitting power and the receiving power, for each transmitting angle in at least one preset transmitting angle of the directional transmitting antenna, the transmitting power of the transmitting signal under the transmitting angle is acquired first, and at least one signal receiving power and at least one signal receiving time delay under the transmitting angle are acquired. Wherein the at least one signal reception power comprises a reception power at which the directional reception antenna receives a signal at each of the at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle. Since there may be a case where signals of the same propagation path are repeatedly received, it is necessary to determine the received power of the repeatedly received signal from the received power of the signals acquired at least one preset transmission angle. And because the time delays of the signals of the same propagation path are similar, the channel path loss estimation device can determine the received power of the repeated received signals according to the acquired signal received power and the signal received time delay. That is, the reception delays of the signals are obtained, the reception delays are compared in pairs, the reception delays are determined to be similar, the reception signals corresponding to the similar reception delays are determined to be the repeatedly received signals, and then the reception power of the repeatedly received signals is determined according to the reception power of the repeatedly received signals. After the received power of the repeated received signal is obtained, a correction factor of the channel path loss can be determined based on the received power of the repeated received signal to compensate for the channel path loss error due to repeated calculation of the received power of the signal of the same propagation path. For example, the accumulated value of the received power of the repeated received signal may be determined as the value of the correction factor of the channel path loss. After determining the correction factor of the channel path loss, the channel path loss may be determined according to the obtained transmission power, the signal receiving power and the correction factor of the channel path loss. For example, the difference between the acquired transmit power and the signal received power may be calculated first, and then the value of the correction factor is added, and the final calculation result is taken as the value of the channel path loss. Thus, in the embodiment of the present application, when estimating the channel path loss, instead of directly taking the difference between the transmit power and the receive power as the value of the channel path loss, in order to avoid the error of the channel path loss caused by the receive power of the repeated received signal, the channel path loss device may determine the receive power of the repeated received signal according to the signal receive power and the signal receive delay, and determine the correction factor of the channel path loss according to the receive power of the repeated received signal, so as to compensate the channel path loss error. And then determining the channel path loss according to the acquired transmitting power, the signal receiving power and the channel path loss correction factor, thereby improving the accuracy of channel path loss estimation.

Fig. 1 is a flow chart of a method for estimating channel path loss according to an embodiment of the present application. As shown in fig. 1, the method includes:

step S101, for each transmitting angle of at least one preset transmitting angle of the directional transmitting antenna, acquiring transmitting power of a transmitting signal under the transmitting angle, at least one signal receiving power under the transmitting angle and at least one signal receiving time delay.

Specifically, since the channel path loss refers to the loss generated by the signal propagating in space, the value of the channel path loss is generally calculated according to the difference between the transmission power of the transmitted signal at the transmission angle and the reception power of the signal at the reception angle. Therefore, the channel path loss estimating apparatus can acquire the transmission power and the signal receiving power first. Since the directional transmitting antenna may receive signals at each of at least one preset receiving angle when transmitting signals at each transmitting angle, the channel path loss estimating apparatus needs to acquire at least one signal receiving power and at least one signal receiving delay at each of at least one preset transmitting angle of the directional transmitting antenna. Wherein the at least one signal reception power comprises a reception power at which the directional reception antenna receives a signal at each of the at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle.

That is, for each of the at least one preset transmission angle, the reception power and the reception delay when the directional reception antenna receives the signal at each of the at least one preset reception angle need to be acquired at the transmission angle. For example, assuming that there are three transmitting angles of the directional transmitting antenna and three receiving angles of the directional receiving antenna, when the transmitting angle of the directional transmitting antenna is the transmitting angle 1, it is necessary to obtain the receiving power and the receiving delay of the receiving signal when the receiving angles of the directional receiving antenna are the receiving angles 1, 2 and 3, respectively; when the transmitting angle is the transmitting angle 2, the receiving power and the receiving time delay of the receiving signals of the directional receiving antenna when the receiving angles are the receiving angle 1, the receiving angle 2 and the receiving angle 3 respectively need to be obtained; when the transmission angle is the transmission angle 3, the receiving power and the receiving time delay of the receiving signal of the directional receiving antenna when the receiving angles are the receiving angle 1, the receiving angle 2 and the receiving angle 3 respectively need to be obtained.

Step S102, according to the obtained signal receiving power and signal receiving time delay, the receiving power of the repeated receiving signal is determined.

In the embodiment of the application, after the signal receiving power and the signal receiving delay are obtained, the receiving power of the repeated receiving signal may exist in the signal receiving power, so as to avoid the problem of inaccurate channel path loss estimation caused by the receiving power of the repeated receiving signal, and therefore, the receiving power of the repeated receiving signal needs to be determined before the channel path loss is determined.

As a possible implementation manner, determining the received power of the repeated received signal according to the obtained received power of the signal and the signal receiving delay includes:

if the at least two received signals have the repeated received signals, determining a target received signal and at least one repeated received signal in the repeated received signals, and determining the received power of the at least one repeated received signal.

In particular, since there is a possibility that there are repeated received signals only when at least two received signals are received, it is necessary to determine whether at least two received signals are received first. At this time, it may be determined whether at least two received signals are received according to the acquired signal received power. Since one received signal corresponds to one signal reception power, the number of received signals can be determined by the number of acquired signal reception powers. If at least two signal received powers are acquired, indicating that at least two received signals are received; if only one signal received power is acquired, it is indicated that only one signal is received. If it is determined that at least two received signals are received, it is determined whether there are repeated received signals in the at least two received signals. Since the repeatedly received signals are signals propagating on the same propagation path, and the signal reception delays of the received signals propagating on the same propagation path are similar, it is possible to determine whether there are repeatedly received signals among the at least two received signals based on the signal reception delays of the at least two received signals. Namely, comparing the signal receiving time delay of each two received signals in at least two received signals, and if the received signals with similar signal receiving time delay exist, determining that the received signals have repeated received signals in the at least two received signals; if the received signals with similar signal receiving time delays do not exist, determining that the received signals are not repeatedly received in the received at least two signals.

As one possible implementation manner, determining whether there is a repeatedly received signal in the at least two received signals according to the signal receiving delays of the at least two received signals includes:

determining whether the difference value between every two signal receiving delays is larger than a preset time threshold according to the signal receiving delays of at least two received signals;

That is, since each of the at least two received signals may be a repeated received signal, it is necessary to compare each of the at least two received signals according to the signal receiving delays of the at least two received signals, that is, to compare the signal receiving delays of the at least two received signals in pairs, and determine whether the difference between each of the two signal receiving delays is greater than a preset time threshold. If the difference between the at least two signal receiving delays is not greater than the preset time threshold, the receiving delays of the received signals corresponding to the at least two signal receiving delays, the difference of which is not greater than the preset time threshold, are similar, namely the received signals of the same propagation path, so that the received signals corresponding to the at least two signal receiving delays, the difference of which is not greater than the preset time threshold, can be determined as repeatedly received signals.

If the difference value between every two signal receiving time delays is larger than a preset time threshold value, determining that no repeated received signals exist in the received at least two received signals.

That is, if the difference between the receiving delays of every two signals is greater than the preset time threshold, it is indicated that the receiving delays of every two received signals in the at least two received signals are dissimilar, that is, the signals that are not propagated by the same propagation path in every two received signals in the at least two received signals, and the signals that are not repeatedly received in the at least two received signals.

It should be noted that the preset time threshold may be preset according to actual requirements, which is not limited by the present application.

After determining that there are repeatedly received signals in the at least two received signals, since the repeatedly received signals all belong to the same propagation path, and when calculating channel path loss, the received power of one propagation path can be calculated only once, it is necessary to determine a target received signal from among the repeatedly received signals, determine at least one received signal other than the target received signal from among the repeatedly received signals as at least one repeatedly received signal, and then determine the received power of the at least one repeatedly received signal from the at least one repeatedly received signal.

Wherein, in the repeatedly received signals, determining the target received signal and at least one repeatedly received signal includes:

among the repeatedly received signals, a received signal with the largest received power among the repeatedly received signals is determined as a target received signal according to the received power of the repeatedly received signals;

Since a larger received power of the received signal indicates a stronger signal strength of the received signal, the received signal with the largest received power may be determined as the target received signal, and at least one received signal other than the target received signal among the repeatedly received signals is at least one repeatedly received signal. Since one received signal corresponds to one received power, the received power of at least one repeated received signal can be determined after at least one repeated received signal is determined.

For example, assume that there are 1 preset transmission angles of the directional transmission antenna, which are transmission angles 1. The number of the preset receiving angles of the directional receiving antenna is two, namely a receiving angle 1 and a receiving angle 2. Firstly, aiming at a transmitting angle 1 of a directional transmitting antenna, acquiring transmitting power of a transmitting signal under the transmitting angle 1, and receiving power and receiving time delay of the signal when each receiving angle under the transmitting angle 1 receives the signal. When the transmitting angle of the directional transmitting antenna is the transmitting angle 1, the transmitting power under the condition that the transmitting angle is the transmitting angle 1, and the signal receiving power and the signal receiving time delay received when the receiving angles are the receiving angles 1 and 2 are obtained. Then, two groups of detection samples at this time are respectively the signal receiving power and the signal receiving time delay of the received signal when the receiving angle 1 is adopted under the transmitting angle 1, and the signal A and the signal B are assumed to be received at this time, so that the receiving power of the signal A is a, the receiving time delay is a ', the receiving power of the signal B is B, and the receiving time delay is B'; when the receiving angle 2 is adopted under the transmitting angle 1, the signal receiving power and the signal receiving time delay of the received signal are adopted, and the signal C is received at the moment, so that the receiving power of the signal C is C and the receiving time delay is C'. The received power of the repeated received signal needs to be determined according to the received power of the signals in the two groups of detection samples and the signal receiving time delay. First, since there may be a situation that no signal is received when the receiving angle 1 is adopted at the transmitting angle 1, that is, there may be no receiving power and no receiving delay in the first group of detection samples, only one signal may be received power and only one signal may be received delay in the two groups of detection samples at this time, and it is unnecessary to detect whether there is a repeated received signal. Therefore, the channel path loss estimating apparatus may determine whether at least two received signals are received according to the acquired amount of signal received power, and may determine that three received signals are received since three signal received powers and corresponding reception delays are received in this example. At this time, it is required to determine whether there are repeatedly received signals in the three received signals, and since the receiving delays of the repeatedly received signals are similar, the signal receiving delays of the three received signals may be compared in pairs, so as to determine whether the difference between the receiving delays of each two signals is greater than the preset time threshold Δd. That is, it is determined whether the difference between the reception delay a 'and the reception delay B' is greater than a preset time threshold Δd, whether the difference between the reception delay a 'and the reception delay c' is greater than a preset time threshold Δd, whether the difference between the reception delay B 'and the reception delay c' is greater than a preset time threshold Δd, and if the difference between the reception delay a 'and the reception delay B' is not greater than the preset time threshold Δd, the difference between the reception delay a 'and the reception delay c' is greater than the preset time threshold Δd, and then it may be determined that the reception delay a 'is similar to the reception delay B', and then the reception signal a corresponding to the reception delay a 'and the reception signal B corresponding to the reception delay B' are repeatedly received signals. In this case, the received power a of the received signal a and the received power B of the received signal B are compared, and since a larger received power indicates a stronger received signal strength, a received signal having a larger received power is determined as a target received signal, and if the received power a is larger than the received power B, the received signal a can be determined as a target received signal, the received signal B can be determined as a repeated received signal, and the received power B' of the received signal B can be determined as a received power of the repeated received signal.

In the embodiment of the application, each received signal has a corresponding transmitting angle and a corresponding receiving angle, and because the repeatedly received signals are signals received in the same propagation path, the transmitting angles corresponding to the repeatedly received signals are the same or similar, and similarly, the receiving angles corresponding to the repeatedly received signals are the same or similar. In this way, whether the received signal has a repeated received signal or not can be determined within a certain transmitting angle range and a corresponding receiving angle range. At this time, the target transmitting angle and the target receiving angle can be determined according to at least one preset transmitting angle and at least one preset receiving angle, and then the target transmitting angle detection range and the target receiving angle detection range are determined, so that the target transmitting angle detection range can transmit only at each time, and the repeatedly received signal is determined in the signals received in the target receiving angle detection range, so that the workload of repeatedly receiving signal detection can be greatly reduced, and the working efficiency is improved.

Based on this, as a possible implementation manner, determining the received power of the repeated received signal according to the acquired received power of the signal and the signal receiving delay includes:

according to a first preset sequence, determining a target emission angle detection range from emission angle detection ranges corresponding to at least one preset emission angle;

according to a second preset sequence, determining a target receiving angle detection range in the receiving angle detection range corresponding to at least one preset receiving angle;

determining whether there are at least two first received signals among the at least two received signals; the first received signal is a signal transmitted in a target transmission angle detection range and received in the target reception angle detection range;

if the target receiving angle detection range is not the last receiving angle detection range, updating the next receiving angle detection range of the target receiving angle detection range into the target receiving angle detection range according to a second preset sequence, and re-executing the steps to determine whether at least two first receiving signals exist in at least two receiving signals, and determining whether the target receiving angle detection range is the last receiving angle detection range according to the second preset sequence until the target receiving angle detection range is the last receiving angle detection range;

if the target emission angle detection range is not the last emission angle detection range, updating the next emission angle detection range of the target emission angle detection range to the target emission angle detection range according to a first preset sequence, repeating the executing steps to determine the target receiving angle detection range in the receiving angle detection range corresponding to at least one preset receiving angle according to a second preset sequence, and determining whether the target emission angle detection range is the last emission angle detection range according to the first preset sequence until the target emission angle detection range is the last emission angle detection range.

In particular, since there is a possibility that there are repeated received signals only when at least two received signals are received, it is necessary to determine whether at least two received signals are received first. At this time, it may be determined whether at least two received signals are received according to the acquired signal received power. Since one received signal corresponds to one signal reception power, the number of received signals can be determined by the number of acquired signal reception powers. If at least two signal received powers are acquired, indicating that at least two received signals are received; if only one signal received power is acquired, it is indicated that only one signal is received. If it is determined that at least two received signals are received, it is determined whether there are repeated received signals in the at least two received signals. At this time, the detection range of the repeated reception signal may be determined according to at least one preset emission angle and at least one preset reception angle, and the repeated reception signal may be detected only within the detection range of the repeated reception signal. Because the transmitting angles corresponding to the repeatedly received signals are the same or similar, and the receiving angles corresponding to the repeatedly received signals are the same or similar, the corresponding detecting range can be determined for each transmitting angle, and the corresponding detecting range can be determined for each receiving angle, that is, the transmitting angle detecting range corresponding to each transmitting angle in at least one preset transmitting angle can be determined for the channel path loss estimating device, and the receiving angle detecting range corresponding to each receiving angle in at least one preset receiving angle can be determined. And then determining a target emission angle detection range from the emission angle detection ranges corresponding to at least one preset emission angle according to a first preset sequence. The first preset sequence is a preset sequence, and may be a sequence of transmitting angles used when the transmitting end transmits signals. After the target transmitting angle detection range is determined, determining the target receiving angle detection range in the receiving angle detection range corresponding to at least one preset receiving angle according to a second preset sequence. The second preset sequence is a preset sequence, and may be a sequence of receiving angles used when the receiving end receives the signal. After the target transmission angle detection range and the target reception angle detection range are determined, it is determined whether there are at least two first reception signals among the at least two reception signals. Wherein the first received signal is a signal transmitted in the target transmission angle detection range and received in the target reception angle detection range. Because each received signal has its corresponding transmitting angle and receiving angle, it is able to detect whether each received signal is transmitted within the target transmitting angle detection range according to the transmitting angle and receiving angle corresponding to each received signal in at least two received signals, and the signal received within the target receiving angle detection range is the first received signal. If there are at least two first received signals, it is necessary to determine whether there are repeatedly received signals in the at least two first received signals, and at this time, it may be determined whether there are repeatedly received signals in the at least two first received signals according to the signal reception delays of the at least two first received signals. Since each of the at least two first received signals may be a repeatedly received signal, it is necessary to compare each of the two signal reception delays in the signal reception delays of the at least two first received signals, that is, to compare the signal reception delays of the at least two first received signals in pairs, and determine whether the difference between each of the two signal reception delays is greater than a preset time threshold. If the difference between the at least two signal receiving delays is not greater than the preset time threshold, which means that the at least two signal receiving delays with the difference not greater than the preset time threshold are similar, the at least two first receiving signals with similar receiving delays can be considered to be receiving signals of the same propagation path, so that the first receiving signals corresponding to the at least two signal receiving delays with the difference not greater than the preset time threshold can be determined to be repeatedly received signals, and at the moment, the fact that the at least two first receiving signals have repeatedly received signals can be determined.

If the at least two first received signals have the repeatedly received signals, determining a target received signal and at least one repeatedly received signal in the repeatedly received signals, and determining the received power of the at least one repeatedly received signal.

In this case, since a larger received power of the received signal indicates a stronger signal strength of the received signal, among the repeatedly received signals, a received signal having the largest received power among the repeatedly received signals may be determined as a target received signal, and at least one received signal other than the target received signal among the repeatedly received signals may be determined as at least one repeatedly received signal. Since one received signal corresponds to one received power, the received power of at least one repeated received signal can be determined after at least one repeated received signal is determined.

After determining the received power of at least one repeated received signal according to the target transmission angle detection range, the target reception angle detection range may determine whether the repeated received signal exists in the reception angle detection range corresponding to each of the at least one preset reception angle under the target angle detection range, and then determine whether the target reception angle detection range is the last reception angle detection range according to the second preset order.

If the target receiving angle detection range is not the last receiving angle detection range, updating the next receiving angle detection range of the target receiving angle detection range into the target receiving angle detection range according to a second preset sequence, and re-executing the steps to determine whether at least two first receiving signals exist in at least two receiving signals or not until the step to determine whether the target receiving angle detection range is the last receiving angle detection range according to the second preset sequence until the target receiving angle detection range is determined to be the last receiving angle detection range. In this way, the received power of all the repeated received signals in the received signal within the received angle detection range corresponding to at least one preset received angle under the target transmission angle detection range can be determined.

If the target receiving angle detection range is the last receiving angle detection range, the method indicates that under the target transmitting angle, all repeated receiving signals in the receiving angle detection range corresponding to at least one preset receiving angle are determined. Then it is possible to continue to detect whether there are repeated received signals in the received signals corresponding to the next transmission angle detection range of the target transmission angle detection range, and at this time, it is determined whether the target transmission angle detection range is the last transmission angle detection range according to the first preset sequence.

If the target emission angle detection range is not the last emission angle detection range, updating the next emission angle detection range of the target emission angle detection range to the target emission angle detection range according to a first preset sequence, repeating the executing steps to determine the target receiving angle detection range in the receiving angle detection range corresponding to at least one preset receiving angle according to a second preset sequence, and determining whether the target emission angle detection range is the last emission angle detection range according to the first preset sequence until the target emission angle detection range is the last emission angle detection range. In this way, in the embodiment of the present application, for the transmission angle detection range corresponding to each of at least one preset transmission angle, the received power of the repeated received signal received in the reception angle detection range corresponding to each of at least one preset reception angle under the transmission angle detection range corresponding to the transmission angle can be determined.

If the target transmission angle detection range is the last transmission angle detection range, the received power of all repeated received signals in at least two received signals can be determined.

It should be noted that, the detection range of the emission angle corresponding to each emission angle in the at least one preset emission angle, and the detection range of the receiving angle corresponding to each receiving angle in the at least one preset receiving angle may be set according to the actual requirement, which is not limited in the present application.

For example, assume that there are two preset transmission angles of the directional transmission antenna, and the first preset sequence is transmission angle 1 and transmission angle 2; the number of the preset receiving angles of the directional receiving antenna is two, and the second preset sequence is a receiving angle 1 and a receiving angle 2. Firstly, aiming at a transmitting angle 1 of a directional transmitting antenna, acquiring transmitting power of a transmitting signal under the transmitting angle 1, signal receiving power and signal receiving time delay when each receiving angle under the transmitting angle 1 receives the signal; and aiming at the transmitting angle 2 of the directional transmitting antenna, acquiring the transmitting power of a transmitting signal under the transmitting angle 2, the signal receiving power and the signal receiving time delay when each receiving angle under the transmitting angle 2 receives the signal. When the transmitting angle of the directional transmitting antenna is the transmitting angle 1, acquiring transmitting power under the condition that the transmitting angle is the transmitting angle 1, and receiving power and signal receiving time delay of signals received when the receiving angles are the receiving angles 1 and 2 respectively; when the transmitting angle of the directional transmitting antenna is the transmitting angle 2, acquiring the transmitting power under the condition that the transmitting angle is the transmitting angle 2, and respectively acquiring the signal receiving power and the signal receiving time delay received when the receiving angle is the receiving angle 2 and the receiving angle 2. Then, the detection samples at this time have 4 groups, which are respectively the signal receiving power and the signal receiving time delay of the received signal when the receiving angle 1 is adopted under the transmitting angle 1; receiving signal receiving power and signal receiving time delay of the received signal when adopting a receiving angle 2 under the transmitting angle 1; receiving signal receiving power and signal receiving time delay of the received signal when adopting the receiving angle 1 under the transmitting angle 2; and adopting the signal receiving power and the signal receiving time delay of the received signal when the receiving angle 2 is adopted under the transmitting angle 2. The received power of the repeated received signal needs to be determined according to the received power of the signals in the 4 groups of detection samples and the signal receiving delay. First, the channel path loss estimating means may determine whether at least two received signals are received according to the amount of the acquired signal received power. It is assumed that at least two received signals are received, indicating that it is necessary to determine whether there are repeatedly received signals among the at least two received signals at this time. Because the transmitting angles corresponding to the repeatedly received signals are the same or similar, and the receiving angles corresponding to the repeatedly received signals are the same or similar, the corresponding detecting range can be determined for each transmitting angle, and the corresponding detecting range can be determined for each receiving angle, namely the transmitting angle detecting range corresponding to each transmitting angle in two preset transmitting angles can be determined for the channel path loss estimating device, and the receiving angle detecting range corresponding to each receiving angle in two preset receiving angles can be determined. According to a first preset sequence, determining a target emission angle detection range in the emission angle detection ranges corresponding to the two preset emission angles, namely, an emission angle detection range corresponding to the emission angle 1. And then determining a target receiving angle detection range, namely a receiving angle detection range corresponding to the receiving angle 1, from the receiving angle detection ranges corresponding to the two preset receiving angles according to a second preset sequence. In the at least two received signals, according to the transmitting angle and the receiving angle corresponding to each received signal in the at least two received signals, detecting whether each received signal is transmitted in the transmitting angle detection range corresponding to the transmitting angle 1, and receiving the signal in the receiving angle detection range corresponding to the receiving angle 1, namely detecting whether each received signal is a first received signal. Assuming that the detected signal is transmitted in the transmission angle detection range corresponding to the transmission angle 1, and the signal received in the reception angle detection range corresponding to the reception angle 1 includes a reception signal D, a reception signal E, and a reception signal F, where the reception power of the signal D is D, the reception delay is D ', the reception power of the signal E is E, the reception delay is E ', the reception power of the signal F is F, and the reception delay is F ', three first reception signals can be determined. At this time, it is required to determine whether there are repeatedly received signals in the three first received signals, and since the receiving delays of the repeatedly received signals are similar, the two-to-two comparison may be performed according to the signal receiving delays of the three first received signals, so as to determine whether the difference between the two signal receiving delays is greater than the preset time threshold Δd. That is, it is determined whether the difference between the reception delay D 'and the reception delay E' is greater than a preset time threshold Δd, whether the difference between the reception delay D 'and the reception delay f' is greater than a preset time threshold Δd, whether the difference between the reception delay E 'and the reception delay f' is greater than a preset time threshold Δd, it is assumed that the difference between the reception delay D 'and the reception delay E' is not greater than a preset time threshold Δd, the difference between the reception delay D 'and the reception delay f' is greater than a preset time threshold Δd, and then it is determined that the reception delay D 'is similar to the reception delay E', and then the reception signal D corresponding to the reception delay D 'and the reception signal E corresponding to the reception delay E' are repeatedly received signals. In this case, the received power D of the received signal D and the received power E of the received signal E are compared, and since a larger received power indicates a stronger received signal strength, a received signal having a larger received power is determined as a target received signal, and assuming that the received power D is larger than the received power E, the received signal D may be determined as a target received signal, the received signal E may be determined as a repeated received signal, and the received power E' of the received signal E may be determined as a received power of the repeated received signal. At this time, it is determined whether the reception angle detection range corresponding to the reception angle 1 is the last reception angle detection range. Since the reception angle detection range corresponding to the reception angle 1 is not the last reception angle detection range, the reception angle detection range corresponding to the reception angle 2 is determined as the target reception angle detection range according to the second preset sequence, and whether at least two first reception signals exist in the at least two reception signals is determined, that is, the signal transmitted in the transmission angle detection range corresponding to the transmission angle 1 and received in the reception angle detection range corresponding to the reception angle 2. Assuming that there are at least two first signals, the repeated received signals may be determined from the at least two first received signals, so as to determine the received power of the repeated received signals, and specifically, the process of determining the received power of the repeated received signals may be referred to the received signals in the transmission angle detection range corresponding to the transmission angle 1 and the receiving angle detection range corresponding to the receiving angle 1.

At this time, it is determined whether the reception angle detection range corresponding to the reception angle 2 is the last reception angle detection range. Since the receiving angle detection range corresponding to the receiving angle 2 is the last receiving angle detection range, at this time, according to the first preset sequence, it is determined whether the transmitting angle detection range corresponding to the transmitting angle 1 is the last transmitting angle detection range. Since the emission angle detection range corresponding to the emission angle 1 is not the last emission angle detection range, the emission angle detection range corresponding to the emission angle 2 is updated to the target emission angle detection range according to the first preset sequence. At this time, the channel path loss estimating apparatus needs to determine the received power of the repeated received signal from the received signals within the transmission angle detection range corresponding to the transmission angle 2. The above process of determining the received power of the repeated received signal in the received signal within the detection range of the transmission angle corresponding to the transmission angle 1 may be referred to specifically, and will not be described herein. After determining the received power of the repeated received signals in the received signals within the transmission angle detection range corresponding to the transmission angle 2, determining whether the transmission angle detection range corresponding to the transmission angle 2 is the last transmission angle detection range according to a first preset sequence. Since the transmission angle detection range corresponding to the transmission angle 2 is the last transmission angle detection range, it is explained that the received power of all the repeated received signals in the at least two received signals has been determined at this time.

Step S103, determining a correction factor of the channel path loss according to the received power of the repeated received signals.

Wherein the correction factor is a value for compensating for a channel path loss error.

In the embodiment of the application, after the determined received power of the repeated received signal, the correction factor of the channel path loss can be determined. For example, the received power accumulated value of all the repeated received signals may be used as the value of the correction factor for the channel path loss. If there are duplicate received signals, indicating that the received power of the same propagation path is calculated multiple times, the calculated value of the channel path loss will be lower than the actual value, causing an error, and the correction factor can be used to compensate the channel path loss error.

Step S104, determining the channel path loss according to the acquired transmitting power, the signal receiving power and the correction factor of the channel path loss.

Specifically, after determining the correction factor of the channel path loss, the channel path loss may be determined according to the acquired transmit power, the signal receiving power, and the correction factor of the channel path loss. For example, the method for determining the channel path loss may be that the obtained values of the transmission power are accumulated, the obtained values of the signal receiving power are accumulated, then the difference between the accumulated values of the transmission power and the accumulated values of the signal receiving power is calculated, then the difference between the accumulated values of the transmission power and the accumulated values of the signal receiving power is the value of the uncorrected channel path loss, then the value of the uncorrected channel path loss is added to the value of the correction factor of the channel path loss, and the sum of the value of the uncorrected channel path loss and the value of the correction factor of the channel path loss is used as the value of the channel path loss. The method comprises the steps of obtaining a value of transmitting power, accumulating the value of receiving power of a signal, calculating a difference value between the accumulated value of receiving power of the signal and a channel path loss correction factor, obtaining the difference value between the accumulated value of receiving power of the signal and the channel path loss correction factor as a signal receiving power correction value, and obtaining the difference value between the signal receiving power correction value and the channel path loss correction factor as a channel path loss value. Of course, other calculation methods are also possible, and the application is not limited in this regard.

As a possible implementation manner, fig. 2 is a flow chart of another method for estimating channel path loss according to an embodiment of the present application. The specific implementation method is as follows.

Step S201, for each transmitting angle of at least one preset transmitting angle of the directional transmitting antenna, acquiring transmitting power of a transmitting signal under the transmitting angle, at least one signal receiving power under the transmitting angle and at least one signal receiving time delay.

Specific reference may be made to step S101, which is not described herein.

Step S202, determining whether at least two received signals are received according to the acquired signal received power.

In particular, reference may be made to step S102, which is not described herein.

Step S203, if at least two received signals are received, determining an emission angle detection range corresponding to each emission angle in at least one preset emission angle, and a receiving angle detection range corresponding to each receiving angle in at least one preset receiving angle.

Step S204, determining a target emission angle detection range from the emission angle detection ranges corresponding to at least one preset emission angle according to a first preset sequence.

Step S205, determining a target receiving angle detection range from the receiving angle detection ranges corresponding to at least one preset receiving angle according to a second preset sequence.

Step S206, determining whether there are at least two first received signals in the at least two received signals.

Specifically, if there are at least two first received signals, step S207 is performed.

If at least two first received signals do not exist, determining that no repeated received signals exist in the received first received signals.

Specifically, since it is only when there are at least two first received signals among at least two received signals, it is necessary to determine whether there are duplicate received signals among the received first received signals. And when at least two first received signals are not included in the at least two received signals, determining that the received first received signals are not repeated.

Step S207, if there are at least two first received signals, determining whether the difference between the signal receiving delays of each two first received signals is greater than a preset time threshold according to the signal receiving delays of the at least two first received signals.

If the difference between the at least two signal receiving delays is not greater than the preset time threshold, step S208 is performed.

If the difference between every two signal receiving delays is larger than the preset time threshold in the signal receiving delays of at least two first receiving signals, determining that no repeated received signals exist in the received at least two first receiving signals.

Step S208, if the difference between the at least two signal receiving delays is not greater than the preset time threshold, determining that the received signals corresponding to the at least two signal receiving delays with the difference not greater than the preset time threshold are repeatedly received signals.

In step S209, the target received signal and at least one repeated received signal are determined, and the received power of the at least one repeated received signal is determined.

Step S210, determining whether the target receiving angle detection range is the last receiving angle detection range according to a second preset sequence.

Specifically, if the last receiving angle detection range is not the last receiving angle detection range, step S211 is executed; if the last receiving angle detection range is the last receiving angle detection range, step S212 is executed.

Step S211, if the receiving angle detection range is not the last receiving angle detection range, updating the next receiving angle detection range of the target receiving angle detection range to the target receiving angle detection range according to the second preset sequence.

Specifically, if the target receiving angle detection range is not the last receiving angle detection range, updating the next receiving angle detection range of the target receiving angle detection range to the target receiving angle detection range according to the second preset sequence, and re-executing steps S206 to S210 until the target receiving angle detection range is determined to be the last receiving angle detection range.

Step S212, if the target emission angle detection range is the last emission angle detection range, determining whether the target emission angle detection range is the last emission angle detection range according to a first preset sequence.

Specifically, if it is not the last emission angle detection range, step S213 is performed. And if the transmission angle detection range is the last transmission angle detection range, the received power of all repeated received signals in the acquired signal received power is determined.

Step S213, if not the last emission angle detection range, updating the next emission angle detection range of the target emission angle detection range to the target emission angle detection range according to the first preset sequence.

Specifically, if the transmission angle detection range is not the last transmission angle detection range, updating the next transmission angle detection range of the target transmission angle detection range to the target transmission angle detection range according to the first preset sequence, and re-executing the steps S205 to S212 until the target transmission angle detection range is the last transmission angle detection range.

Step S214, determining the correction factor of the channel path loss according to the received power of the repeated received signals.

The specific reference may be made to step S103, which is not described herein.

Step S215, determining the channel path loss according to the acquired transmitting power, the signal receiving power and the correction factor of the channel path loss.

In particular, reference may be made to step S104, which is not described herein.

Illustratively, according to the method of the above embodiment, the value of the channel path loss may be determined using the following formula:

Wherein PL is channel path loss; pt is the transmission power of a transmitted signal at least one preset transmission angle; the directional transmitting antenna is Tx, the transmitting angle is represented by the transmitting angle in the horizontal direction and the transmitting angle in the vertical direction,an mth emission angle in the vertical direction, +.>m is a positive integer from 1 to s, m=1, 2 … s, s is the number of emission angles in the vertical direction, +.>N-th emission angle in horizontal direction, < ->n is a positive integer from 1 to t, n=1, 2 … t, t is the number of emission angles in the horizontal direction, which may be expressed as +.>The number of the emission angles is the product of the number of the emission angles in the vertical direction and the number of the emission angles in the horizontal direction; the directional receiving antenna is Rx, the receiving angle is represented by the receiving angle in the horizontal direction and the receiving angle in the vertical direction, < >>Is the receiving angle of the vertical direction, +.>i is a positive integer from 1 to p, i=1, 2 … p, p is the number of emission angles in the vertical direction, +.>Is the receiving angle in the horizontal dimension direction,j is a positive integer from 1 to q, j=1, 2 … q, q is the number of emission angles in the horizontal direction, and the reception angle can be expressed as +.>The number of the receiving angles is the product of the number of the receiving angles in the vertical direction and the number of the receiving angles in the horizontal direction.

At the position ofUnder the emitting angle->Is->The received signal received power at the reception angle is +.>Power is received for signals received at least one transmit angle. G is the channel path loss correction factor determined according to the above embodiment. According to the transmission power Pt of the transmitted signal under at least one preset transmission angle and the signal receiving power received under at least one transmission angleAnd the channel path loss correction factor G can determine the channel path loss PL according to the above formula. Wherein the correction factor G of the channel path loss is expressed by:

when the correction factor G is determined, it may be first determined in a first predetermined order,the first emission angle is setThe corresponding emission angle detection range is determined as the target emission angle detection range, and then the first receiving angle is determined according to the second preset sequence>The corresponding reception angle detection range is determined as the target reception angle detection range, and it is determined whether there are at least two first reception signals among the at least two reception signals. If at least two first received signals exist, determining whether the difference value between the receiving time delays of every two signals is larger than a preset time threshold value according to the receiving time delays of the at least two first signals; if the difference value between the receiving delays of at least two first receiving signals is not greater than a preset time threshold, determining that the receiving signals corresponding to the receiving delays of at least two first receiving signals, the difference value of which is not greater than the preset time threshold, are repeatedly received signals; among the repeatedly received signals, a received signal with the largest received power among the repeatedly received signals is determined as a target received signal according to the received power of the repeatedly received signals; and determining at least one received signal except the target received signal in the repeatedly received signals as at least one repeatedly received signal, and further determining the received power of the at least one repeatedly received signal. Determining the sum of the received powers of the at least one repeated received signal as the transmit angle based on the received powers of the at least one repeated received signal Emitted in the corresponding detection range at the receiving angle +.>The received power of the repeated received signal received in the corresponding receiving angle detection range is +.>And so on, according to the embodiment of the applicationThe method can determine the received power of all the repeated received signals in at least two received signals, namely

In this way, according to the method described in the above embodiment, when calculating the channel path loss, the channel path loss estimating device determines the received power of the repeated received signal according to the obtained signal received power and the signal received delay, so as to determine the correction factor, so as to compensate the error of the channel path loss, and improve the accuracy of estimating the channel path loss. In addition, when determining the received power of the repeated received signal, it is not necessary to determine the received power of the repeated received signal in at least two signals, and the repeated received signal may be determined only in the signals transmitted in the target transmission angle detection range and received in the target reception angle detection range according to the method described in the embodiment of fig. 2, so as to determine the received power of the repeated received signal, thereby reducing the complexity in determining the repeated received signal.

Corresponding to the above embodiment, as shown in fig. 3, an embodiment of the present application further provides an apparatus for estimating channel path loss, including:

an obtaining unit 301, configured to obtain, for each transmission angle of at least one preset transmission angle of the directional transmission antenna, at least one signal receiving power and at least one signal receiving delay under the transmission angle; the at least one signal reception power includes a reception power at which the directional reception antenna receives a signal at each of at least one preset reception angle; the at least one signal reception delay comprises at least one signal reception power comprising a reception delay when the directional reception antenna receives a signal at each of at least one preset reception angle.

The processing unit 302 is configured to determine the received power of the repeated received signal according to the obtained received power of the signal and the signal receiving delay.

A processing unit 302, configured to determine a correction factor of the channel path loss according to the received power of the repeated received signal; the correction factor is a value for compensating for a channel path loss error;

the processing unit 302 is further configured to determine a channel path loss according to the acquired transmit power, the signal received power, and the correction factor of the channel path loss.

In a possible embodiment, the processing unit 302 is specifically configured to determine whether at least two received signals are received according to the acquired signal received power;

In a possible embodiment, the processing unit 302 is specifically configured to determine, according to the signal receiving delays of at least two received signals, whether a difference between the signal receiving delays is greater than a preset time threshold;

In a possible embodiment, the processing unit 302 is further configured to determine that the at least two received signals are not received repeatedly if the difference between the reception delays of the two signals is greater than the preset time threshold.

if the target emission angle detection range is not the last emission angle detection range, updating the next emission angle detection range of the target emission angle detection range to the target emission angle detection range according to a first preset sequence, repeating the executing steps to determine the target receiving angle detection range in the receiving angle detection range corresponding to at least one preset receiving angle according to a second preset sequence, and determining whether the target emission angle detection range is the last emission angle detection range according to the first preset sequence until the target emission angle detection range is the last emission angle detection range. If the difference value between the receiving time delays of every two signals is larger than the preset time threshold value, determining that the received signals are not repeatedly received.

In a possible embodiment, the processing unit 302 is further configured to determine that there is no signal received repeatedly in the received first received signals if there are at least two first received signals, or

In a possible embodiment, the processing unit 302 is specifically configured to determine, among the repeatedly received signals, a received signal with the largest received power among the repeatedly received signals as the target received signal according to the received power of the repeatedly received signals;

Corresponding to the embodiment, the application also provides electronic equipment. Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application, where the electronic device 400 may include: a processor 401, a memory 402 and a communication unit 403. The components may communicate via one or more buses, and it will be appreciated by those skilled in the art that the configuration of the server as shown in the drawings is not limiting of the embodiments of the application, and that it may be a bus-like structure, a star-like structure, or include more or fewer components than shown, or may be a combination of certain components or a different arrangement of components.

Wherein, the communication unit 403 is configured to establish a communication channel, so that the electronic device may communicate with other devices. Receiving user data sent by other devices or sending user data to other devices.

The processor 401 serves as a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, and executes various functions of the electronic device and/or processes data by running or executing software programs and/or modules stored in the memory 402, and calling data stored in the memory. The processor may be comprised of integrated circuits (integrated circuit, ICs), such as a single packaged IC, or may be comprised of packaged ICs that connect multiple identical or different functions. For example, the processor 401 may include only a central processing unit (central processing unit, CPU). In the embodiment of the invention, the CPU can be a single operation core or can comprise multiple operation cores.

The memory 402, for storing instructions for execution by the processor 401, the memory 402 may be implemented by any type of volatile or nonvolatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

The execution of the instructions in memory 402, when executed by processor 401, enables electronic device 400 to perform some or all of the steps of the embodiments illustrated in fig. 1 or 2.

In a specific implementation, the present invention further provides a computer storage medium, where the computer storage medium may store a program, where the program may include some or all of the steps in each embodiment of the channel path loss estimation method provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random-access memory (random access memory, RAM), or the like.

It will be apparent to those skilled in the art that the techniques of embodiments of the present invention may be implemented in software plus a necessary general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be embodied in essence or what contributes to the prior art in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the embodiments or some parts of the embodiments of the present invention.

The same or similar parts between the various embodiments in this specification are referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are substantially similar to the method embodiment, the description is relatively simple, and reference should be made to the description in the method embodiment for relevant points.

Claims

1. A method for estimating channel path loss, comprising:

for each emission angle in at least one preset emission angle of a directional emission antenna, obtaining the emission power of an emission signal under the emission angle, and at least one signal receiving power and at least one signal receiving time delay under the emission angle; the at least one signal reception power includes a reception power at which the directional reception antenna receives a signal at each of at least one preset reception angle; the at least one signal reception delay comprises a reception delay when the directional reception antenna receives a signal at each of the at least one preset reception angle;

2. The method of claim 1, wherein determining the received power of the repeated received signal based on the obtained received power of the signal and the signal reception delay comprises:

3. The method of claim 2, wherein determining whether there is a repeatedly received signal in the at least two received signals based on the signal reception delays of the at least two received signals comprises:

4. A method according to claim 3, further comprising:

and if the difference value between the two signal receiving time delays is larger than a preset time threshold value, determining that the signals which are not repeatedly received in the at least two received signals.

5. The method of claim 1, wherein determining the received power of the repeated received signal based on the obtained received power of the signal and the signal reception delay comprises:

6. The method as recited in claim 5, further comprising:

7. The method according to any one of claims 2-6, wherein determining the target received signal and at least one of the repeated received signals comprises:

8. An apparatus for estimating channel path loss, comprising:

9. An electronic device, comprising: a processor and a memory storing a computer program which, when executed, causes the electronic device to perform the method of any of claims 1-7.

10. A storage medium comprising a stored program, wherein the program, when run, controls a device in which the storage medium is located to perform the method of any one of claims 1-7.