CN118339785A

CN118339785A - Method, device and system for determining scattering cluster position

Info

Publication number: CN118339785A
Application number: CN202280004993.2A
Authority: CN
Inventors: 张振宇; 吴昱民; 赵群; 叶启彬; 胡苏�; 黄驿轩; 胡泽林; 肖泓宇
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2024-07-12
Also published as: WO2024098345A1

Abstract

The embodiment of the disclosure provides a method for determining a scattering cluster position, which is executed by a signal transmitting end or an echo receiving end or a perception target in a ventilation system, and comprises the following steps: according to the angle and/or time delay information of the channel model, the position of the scattering cluster is determined, and a spatial position determination scheme suitable for channel modeling of the sensing system is provided, so that the scattering cluster in the environment is accurately positioned and is used for the channel model of the sensing system.

Description

Method, device and system for determining scattering cluster position

Technical Field

The present disclosure relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, and a system for determining a location of a scattering cluster.

Background

With the continuous evolution of mobile network communication technology, in future communication systems, user equipment needs to communicate with other devices and sense surrounding devices or environments. The general sensing technology integrates the existing communication system with the traditional radar system, integrates the sensing function on the basis of communication, and can sense the information such as the distance, the speed, the angle and the like of the surrounding environment and the target. In order to evaluate performance of The ventilation system, firstly, a channel modeling of The ventilation system is required, and in a current third generation partnership project (The 3rd Generation Partnership Project,3GPP) cluster delay line (Clustered DELAY LINE, CDL) channel model or a fast fading channel model, an environment is simulated through a concept of a scattering cluster, however, a determination scheme of a scattering cluster position is not clear.

Disclosure of Invention

The disclosure provides a method, a device and a system for determining the position of a scattering cluster, and provides a spatial position determining scheme suitable for modeling the scattering cluster of a channel of a ventilation system, which is used for accurately positioning the scattering cluster in the environment so as to be used for a channel model of the ventilation system.

An embodiment of a first aspect of the present disclosure provides a method for determining a location of a scattering cluster, where the method is performed by a signal transmitting end or an echo receiving end, or a perception target in a ventilation system, and the method includes: determining the position of a scattering cluster according to the angle and/or time delay information of the channel model;

the channel model is a cluster delay line CDL channel model or a fast fading channel model.

In some embodiments of the present disclosure, determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises: determining a location of the scattering cluster based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA;

In some embodiments of the present disclosure, determining the location of the scattering clusters based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA comprises: determining an included angle gamma between the emitted signal rays and the line-of-sight LOS diameter by utilizing AOD and ZOD; determining an included angle gamma' between the received signal rays and the LOS path by utilizing the AOA and the ZOA; an intersection point between the transmitted signal ray and the received signal ray is determined, and the location of the intersection point is determined as the location of the scattering cluster.

In some embodiments of the present disclosure, the method further comprises: determining the slopes of the transmitted signal rays and the received signal rays based on the included angle gamma and the included angle gamma'; determining the distance d ₁ from the signal transmitting end or the echo receiving end to the scattering cluster and the distance d ₂ from the scattering cluster to the perception target according to the slopes of the transmitted signal ray and the received signal ray and the distance R between the signal transmitting end or the echo receiving end and the perception target; from d ₁ and d ₂, normalized delay information is determined.

In some embodiments of the present disclosure, determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises: determining a location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information;

In some embodiments of the present disclosure, determining the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information comprises: determining an included angle gamma between the emitted signal rays and the LOS diameter by using the AODs and ZOD; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perception target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perception target; determining the slope of the emitted signal rays based on the included angle gamma; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

In some embodiments of the present disclosure, the method further comprises: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the azimuth of arrival AOA and the zenith angle ZOA are determined.

In some embodiments of the present disclosure, determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises: determining the position of a scattering cluster based on the arrival azimuth angle AOA, the arrival zenith angle ZOA and the normalized time delay information;

In some embodiments of the present disclosure, determining the location of the scattering cluster based on the azimuth angle of arrival AOA, the zenith angle of arrival ZOA, and the normalized time delay information comprises: determining an included angle gamma' between the received signal ray and the LOS path by utilizing the AOA and the ZOA; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perceived target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perceived target; determining the slope of the received signal ray based on the included angle gamma'; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

In some embodiments of the present disclosure, the method further comprises: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the departure azimuth angle AOD and the departure zenith angle ZOD are determined.

An embodiment of a second aspect of the present disclosure provides a method for determining a location of a scattering cluster, the method being performed by a sensing system, the sensing system including a signal transmitting end, an echo receiving end, and a sensing target, the method including: determining, by a signal transmitting end, a location of a scattering cluster for a path from the signal transmitting end to a sensing target using a method as described in any one of the embodiments of the first aspect of the present disclosure; for a path from a perceived target to an echo receiving end, determining, by the perceived target, a location of a scattering cluster using a method as described in any of the embodiments of the first aspect of the present disclosure.

An embodiment of a third aspect of the present disclosure provides a scattering cluster position determining apparatus, including: the determining module is used for determining the position of the scattering cluster according to the angle and/or time delay information of the channel model;

An embodiment of a fourth aspect of the present disclosure provides a communication device, including: a transceiver; a memory; and the processor is respectively connected with the transceiver and the memory, and is configured to control wireless signal transceiving of the transceiver and realize the method according to the embodiment of the first aspect of the disclosure by executing computer executable instructions on the memory.

A fifth aspect of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; the computer-executable instructions, when executed by a processor, enable the implementation of the method described in the embodiments of the first or second aspect of the present disclosure.

A sixth aspect of the present disclosure provides a sense-of-general system, comprising: the system comprises a signal transmitting end, an echo receiving end and a perception target, wherein the ventilation system is used for executing the method of the embodiment of the second aspect of the disclosure.

According to the method for determining the position of the scattering cluster, the method is executed by a signal transmitting end or an echo receiving end or a perception target in a ventilation system, and comprises the following steps: and determining the position of the scattering cluster according to the angle and/or time delay information of the channel model. The scheme provides a space position determining scheme suitable for a channel modeling scattering cluster of a ventilation system, and the scattering cluster in the environment is accurately positioned so as to be used for a channel model of the ventilation system.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a flow chart of a method of determining a location of a scattering cluster according to an embodiment of the disclosure;

FIG. 2 is a schematic diagram of a CDL channel-based sensor system channel scatter cluster location in accordance with an embodiment of the present disclosure;

FIG. 3 is a flow chart of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram of an off azimuth AOD and off zenith angle ZOD according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure;

FIG. 6 is an effect diagram of a method of determining a location of a scattering cluster according to an embodiment of the disclosure;

FIG. 7 is a flow chart of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure;

FIG. 8 is an effect diagram of a method of determining a location of a scattering cluster according to an embodiment of the disclosure;

FIG. 9 is a flow chart of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure;

FIG. 10 is a flow chart of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure;

FIG. 11 is a schematic block diagram of a scattering cluster location determination device according to an embodiment of the disclosure;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

Fig. 13 is a schematic structural diagram of a chip according to an embodiment of the disclosure.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

In recent years, wireless communication has rapidly progressed, and the demand for various vertical services has increased, resulting in an increasing demand for communication technologies. In future communication systems, the ue needs to communicate with other devices and sense surrounding devices or environments, so that the technology of integrating communication (ISAC) with communication (INTEGRATED SENSING AND) is widely studied in academia and industry.

The communication technology integrates the existing communication system with the traditional radar system, integrates the sensing function on the basis of communication, and can sense the information such as the distance, the speed, the angle and the like of the surrounding environment and the target. However, in order to perform performance evaluation on a sense system, first, sense system channel modeling is required. The existing 3gpp TR 38.901 specifies the channel modeling of the communication system. Because the communication system needs to model the echo signal and sense the echo signal through the echo signal and the sensing algorithm, a bidirectional channel model needs to be established unlike the channel model of the existing communication system.

Furthermore, in the related art, a concept of a scatterer or a scattering cluster is adopted in a communication system to simulate interference in an environment, for example, a tap delay line channel and a cluster delay line channel respectively adopt the scatterer and the scattering cluster to perform statistical modeling on the interference in the environment. According to the existing 3GPP protocol, the spatial positions of the scatterers and the scattering clusters cannot be accurately positioned. However, in channel modeling of a pass-through system, a scattering cluster or a scattering cluster in the environment needs to be perceived, and a path of a transmission signal directly returning to a receiving end after passing through the scattering body or the scattering cluster needs to be constructed, so that a new modeling mode of the scattering body or the scattering cluster needs to be considered.

In existing 3GPP CDL channel models or fast fading channel models, the environment in the environment is simulated by the concept of scattering clusters, where each scattering cluster has a number of pieces of information including normalized delay, power, AOD (Azimuth Angles of Departure, off azimuth), AOA (Azimuth Angles of Arrival, on azimuth), ZOD (Zenith Angles of Departure, off zenith angle), and ZOA (Zenith Angles of Arrival, on zenith angle), etc. However, the departure angle information only describes the angle from the transmitting end to the first refraction, the arrival angle information only describes the angle from the last refraction to the receiving end, and the information of the scattering clusters cannot directly describe the positions of the scattering clusters. For example, based on the four angle information of AOD, AOA, ZOD and ZOA, the position of a certain scattering cluster is calculated, and the total distance of the path corresponding to the position cannot be matched with the total distance calculated according to the time delay. Thus, modeling the location of scattering clusters in a passband system channel is a problem that has not been addressed so far.

Therefore, the present disclosure provides a method, an apparatus and a system for determining a location of a scattering cluster, and provides a scheme for determining a location of a scattering cluster in space, which is suitable for channel modeling of a sensing system, according to angle and/or time delay information of a channel model, to determine the location of the scattering cluster, and accurately locate the scattering cluster in the environment, so as to be used for the channel model of the sensing system.

It should be noted that, since the TDL channel has no angle information, the present solution is exemplified by a CDL channel or a fast fading channel model, and is equally applicable to the present solution if the angle information is introduced to the TDL channel.

It is to be understood that the scheme provided in the present disclosure may be used for Fifth Generation mobile communication technology (5G) and its subsequent communication technologies, such as Fifth Generation mobile communication technology evolution (5G-advanced), sixth Generation mobile communication technology (6G), and the like, and is not limited in the present disclosure.

The scattering cluster position determining scheme provided by the application is described in detail below with reference to the accompanying drawings.

Fig. 1 shows a flow diagram of a method of determining a location of a scattering cluster, according to an embodiment of the disclosure. As shown in fig. 1, the method is performed by a signal transmitting end or an echo receiving end, or a perception target, in a ventilation system. For ease of understanding, table 1 shows a schematic diagram of a CDL channel model parameter set, and fig. 2 shows a schematic diagram of a channel-scattering cluster location of a pass-through system based on a CDL channel.

In the embodiment of the present disclosure, the signal transmitting end and the echo receiving end may be a Base Station (BS) or a terminal, where the echo receiver needs to have a radar function, and the sensing target may be the Base Station or the terminal, or may be an object in the environment. The signal transmitting end and the echo receiving end can be the same device or different devices.

It should be appreciated that since the sense-through system needs to model the echo signal and sense through the echo signal and sensing algorithm, unlike the existing communication system channel model, a bi-directional channel model needs to be established. In the present disclosure, the position of the scattering cluster determined in the unidirectional (including the forward direction from the signal transmitting end to the sensing target and the backward direction from the sensing target to the echo receiving end) process may be used for the whole bidirectional process, or the positions of the scattering clusters may be determined separately in the forward direction and the backward direction, respectively. In other words, for the forward direction, the scheme of the present disclosure may be performed by the signal transmitting end, or may be performed by the perception target, and the determined scattering cluster position may be used for the backward direction; similarly, for the reverse direction, the scheme of the present disclosure may be executed by the perception target, or may be executed by the echo receiving end. The above scheme is applied to the same equipment or different equipment at the transmitting end and the receiving end, and the disclosure will be described one by one with reference to the following drawings.

The embodiment described in fig. 1 is directed to the first case described above, i.e. the location of the scattering clusters is determined in a unidirectional process, which may be used for the unidirectional process as well as for the entire bidirectional process. As shown in fig. 1, the method includes the following steps.

S101, determining the position of a scattering cluster according to the angle of a channel model and/or the time delay information of the channel model;

It should be noted that the angle and delay information of the CDL channel or fast fading channel model is specified in detail by the existing 3gpp TR 38.901. As shown in table 1, the information such as angles and delays of all scattering clusters of the CDL-D channel, etc. is given in 3gpp TR 38.901; wherein Cluster PAS (Power angular spectrum) is Cluster angle power spectrum, laplacian is Laplacian distribution, LOS (Line of Sight) path is line of sight (or direct path). However, according to the existing 3GPP protocol, the information of the scattering clusters cannot directly describe the positions of the scattering clusters, and the scattering clusters or the scattering clusters in the environment need to be perceived in the channel modeling of the ventilation system, so that the scheme corrects the existing 3GPP channel model aiming at the position modeling of the scattering clusters in the channel of the ventilation system, so that the ventilation system is suitable for the ventilation system.

TABLE 1 Scattering Cluster parameter Table

In an embodiment of the present disclosure, the angle information includes an exit azimuth angle AOD, an exit zenith angle ZOD, an arrival azimuth angle AOA, and an arrival zenith angle ZOA, and the delay information includes a normalized delay. Wherein the departure angle information only describes the angle from the transmitting end to the first refraction, and the arrival angle information only describes the angle from the last refraction to the receiving end. The time delay represents the time required by one end of the network to be transmitted to the other end, the time delay information is related to the distance between the signal transmitting end and the echo receiving end and the perception target, and after the distances between the signal transmitting end and the echo receiving end and the perception target are determined, the time delay information is calculated.

For example, fig. 2 shows a schematic diagram of a channel-scattering cluster location of a pass-through sensing system based on a CDL channel. Assuming that the departure azimuth angle AOD of a certain multipath isLeave zenith angle ZOD as θ and arrive at azimuth angle AOA asThe arrival zenith angle ZOA is theta', and the distance between the signal transmitting end and the echo receiving end and the perception target is R. Assuming that in the CDL channel model scene, the signal transmitting end or the echo receiving end is positioned at the original point O (0, 0), and the perception target is positioned at the (R, 0) (on the X axis), the AOD on the LOS path is known to beZOD is θ _LOS =90°, AOA isZOD is θ' _LOS =90°.

In embodiments of the present disclosure, determining the location of the scattering cluster based on the angle and/or time delay information of the channel model may include determining the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, the arrival azimuth angle AOA, and the arrival zenith angle ZOA, may include determining the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information, may include determining the location of the scattering cluster based on the arrival azimuth angle AOA, the arrival zenith angle ZOA, and the normalized time delay information, and the like, and the executing subject may be a signal transmitting end or an echo receiving end in a ventilation system, or a perception target, without limitation.

In summary, according to the method for determining the location of the scattering cluster provided by the embodiment of the present disclosure, a signal transmitting end or an echo receiving end or a perception target in a ventilation system may determine the location of the scattering cluster according to angle and/or time delay information of a channel model, so as to provide a spatial location determination scheme suitable for modeling the scattering cluster of the ventilation system channel.

Fig. 3 shows a flow diagram of a transmission configuration method according to an embodiment of the present disclosure. The method is performed by a signal transmitting end or an echo receiving end or a perception target in the ventilation system.

The embodiment shown in fig. 3 provides an alternative to the embodiment shown in fig. 1. As shown in fig. 3, the method may include the following steps.

S201, determining the position of the scattering cluster based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA and arrival zenith angle ZOA.

In the embodiments of the present disclosure, taking the cluster delay line CDL channel as an example, since only the LOS path is generally considered in the conventional radar system, the present solution is mainly directed to the CDL-D channel and the CDL-E channel with the LOS path. Based on the existing 3GPP CDL channel model, table 1 shows information such as angles and delays of all scattering clusters of CDL-D channel, including LOS diameter and 12 scattering clusters, given in 3GPP TR 38.901.

Specifically, as shown in FIG. 4, the departure azimuth AOD is expressed asThe angle gamma between the emitted signal ray and the line of sight LOS path, represented by θ from zenith angle ZOD, can be determined as shown in equation (1).

Similarly, the azimuth of arrival AOA is expressed asThe angle gamma 'between the arrival signal ray and the line of sight LOS path can be determined by the arrival zenith angle ZOA denoted as θ', and the specific calculation is shown in formula (2).

Further, assuming that the obtained γ and γ' are on the same plane, the plane may be represented as an ellipse as shown in fig. 5 based on fig. 2, where, specifically, in the CDL channel model scenario as shown in fig. 2, the signal transmitting end or echo receiving end is located at the origin O (0, 0), the sensing target is located at (R, 0), and fig. 5 is an ellipse section where the signal transmitting end or echo receiving end, the sensing target, and the transmitted signal radiation and the received signal radiation are located in fig. 2. Therefore, by transmitting the signal ray and receiving the signal ray, an intersection point, which is the position of one of the scattering clusters, can be determined.

Specifically, according to the included angle gamma between the emitted signal ray and the line of sight LOS path and the included angle gamma' between the arriving signal ray and the line of sight LOS path, the slopes of the emitted signal ray and the received signal ray can be determined, and the specific formula is as follows:

k ₁＝tanγ,k ₂＝tanγ′, (3)

Further, by combining equations of the transmitted signal rays and the received signal rays, the intersection point, that is, the position of the scattering cluster, can be calculated.

The effect of determining the positions of the scattering clusters by adopting the scheme is shown in fig. 6, wherein fig. 6 shows the positions of the scattering clusters calculated according to the angle information of 1-12 different scattering clusters, the diamond-shaped diamond in the figure represents the position of a signal transmitting end or an echo receiving end, the five-pointed star represents the position of a perception target, and the 12 black circles in the middle represent the positions for generating the scattering clusters. The right side is the scattering cluster position where the transmitted signal ray and the received signal ray intersect at a distance, and the transmitted signal ray and the received signal ray corresponding to the scattering clusters 1,2 and 3 are nearly parallel. Wherein the scattering clusters 1,2, 3 are coincident in position and the scattering clusters 4, 5, 6 are coincident in position, because the angular information that generated the scattering cluster positions is identical.

In an alternative embodiment of the present disclosure, the method further comprises: determining the slopes of the transmitted signal rays and the received signal rays based on the included angle gamma and the included angle gamma'; determining the distance d ₁ from the signal transmitting end or the echo receiving end to the scattering cluster and the distance d ₂ from the scattering cluster to the perception target according to the slopes of the transmitted signal ray and the received signal ray and the distance R between the signal transmitting end or the echo receiving end and the perception target; from d ₁ and d ₂, normalized delay information is determined.

Specifically, by combining the transmitted signal ray and the received signal ray equation, the distance d ₁ between the signal transmitting end or the echo receiving end and the scattering cluster and the distance d ₂ between the scattering cluster and the perceived target are obtained, and the calculation formula is as follows:

The total distance of the corresponding paths of the scattering cluster is d ₁+d ₂, and the time delay information can be calculated as And c is the light speed, so as to calculate the normalized time delay.

Based on the information such as angles and time delay of all scattering clusters of the CDL-D channel and the like given by the 3GPP, the method calculates the position of a certain scattering cluster according to the information of the four angles of the AOD, the AOA, the ZOD and the ZOA, and the total distance of a path corresponding to the position cannot be matched with the total distance calculated according to the time delay, so that the modeling parameters of the scattering clusters in the ventilation system can be corrected by using the method disclosed by the invention.

In summary, according to the method for determining a location of a scattering cluster provided by the embodiments of the present disclosure, the method is performed by a signal transmitting end or an echo receiving end, or a perception target in a ventilation system, and includes: the position of the scattering cluster is determined based on the departure azimuth angle AOD, the departure zenith angle ZOD, the arrival azimuth angle AOA and the arrival zenith angle ZOA, and the spatial position determination scheme suitable for the channel modeling scattering cluster of the through sensing system is provided, so that the scattering cluster in the environment is accurately positioned and is used for the channel model of the through sensing system. In addition, the method and the device can determine delay information after modeling the channel of the passsense system according to the angle information, and correct parameters in the existing 3GPP channel model so that the method and the device are suitable for the passsense system.

Fig. 7 is a flow chart of a method of determining a location of a scattering cluster according to an embodiment of the disclosure. The method is performed by a signal transmitting end or an echo receiving end or a perception target in the ventilation system.

The embodiment shown in fig. 7 provides another alternative based on the embodiment shown in fig. 1. As shown in fig. 7, the method may include the following steps.

S301, determining the position of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD and the normalized time delay information.

In the embodiments of the present disclosure, taking the cluster delay line CDL channel as an example, since only the LOS path is generally considered in the conventional radar system, the present solution is mainly directed to the CDL-D channel and the CDL-E channel with the LOS path.

In some embodiments of the present disclosure, any of the executing bodies may determine the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information, including in particular: determining an included angle gamma between the emitted signal rays and the LOS diameter by using the AODs and ZOD; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perceived target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perceived target; determining the slope of the emitted signal rays based on the included angle gamma; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

Specifically, a multipath off-azimuth AOD is represented asThe angle gamma between the emitted signal ray and the LOS path can be determined by leaving zenith angle ZOD to be represented as theta, and the calculation formula is the same as formula (1)

Further, based on fig. 2, a plane in which γ is located is cut, and the plane may be represented as an ellipse as shown in fig. 5, and according to the normalized delay information τn and the distance R between the signal transmitting end or the echo receiving end and the sensing target, the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the sensing target may be determined, where the calculation formula is as follows:

2a＝d ₁+d ₂＝R+cτ _n (5)

Where a represents the major axis of the ellipse and c represents the speed of light.

Based on the included angle gamma, the slope of the transmitted signal ray is determined, denoted by k ₁.

k ₁＝tanγ (6)

Further, determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ and the slope of the distances, and specifically determining an equation of the ellipse according to the long axis a of the ellipse and the distance R between the signal transmitting end or the echo receiving end and the sensing target; according to the slope k ₁ of the emitted signal rays, determining an equation of the emitted signal rays, and determining two intersection points by combining the emitted signal ray equation and the elliptic equation, and discarding one intersection point to obtain the position of the scattering cluster.

Specifically, the simultaneous emission signal ray equation and the ellipse equation are formulated as follows:

The unitary quadratic equation is obtained as follows:

Order the The intersection point position can be expressed as follows:

The effect of determining the location of a diffuser cluster using this scheme is shown in fig. 8, fig. 8 shows the diffuser cluster location calculated from the departure angle information and time delay information for different diffuser clusters 1-12, in fig. 8, diamond-shaped diamond represents the position of the signal transmitting end or the echo receiving end, five-pointed star represents the position of the sensing target, and the middle 12 circles represent the positions of the generated scattering clusters. One more 0 scattering point location is shown in fig. 8 because ZOD of the LOS path is not 90 deg. in the CDL-D channel model, resulting in the generation of 0 scattering points. The scattering clusters 1,2, 3 are on the same straight line and the scattering clusters 4, 5,6 are on the same straight line, since the 2 angles at which they are generated are identical, so they exist on ellipses with identical focal points and different long axes.

In an alternative embodiment of the present disclosure, the method further comprises: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the azimuth of arrival AOA and the zenith angle ZOA are determined.

Specifically, based on the position of the scattering cluster, the distance d ₁ between the signal transmitting end or the echo receiving end and the scattering cluster and the distance d ₂ between the scattering cluster and the target can be respectively calculated, and the calculation formula is as follows:

Further, based on R, d ₁ and d ₂, it is possible to determine the arrival azimuth angle AOA and the arrival zenith angle ZOA, specifically, as shown in fig. 5, the scattering cluster is located at the vertex of a triangle in the drawing, the perpendicular line from the vertex to the top is intersected with the point a, and according to R, d ₁ and d ₂, and the angles γ and γ', the distance from the point a to the sensing target can be calculated, and then the arrival azimuth angle AOA and the arrival zenith angle ZOA can be determined.

Updated AOA and ZOA values can be determined according to the positions of 1-12 scattering clusters using the method described above, the update effect is shown in table 2, wherein AOA and ZOA angle parameter values in the CDL-D channel 3GPP standard are given, and AOA and ZOA angle parameter values calculated according to the scattering cluster position information after the scattering cluster positions are determined using the method. This illustrates that modeling parameters of a scattering cluster in a ventilation system can be corrected using the methods of the present disclosure.

Table 2 modified scatter cluster parameter table

In summary, according to the method for determining a location of a scattering cluster provided by the embodiments of the present disclosure, the method is performed by a signal transmitting end or an echo receiving end, or a perception target in a ventilation system, and includes: the method comprises the steps of determining the position of a scattering cluster based on an exit azimuth angle AOD, an exit zenith angle ZOD and normalized time delay information, providing a space position determining scheme suitable for modeling the scattering cluster of a channel of a general sensing system, accurately positioning the scattering cluster in the environment so as to be used for a channel model of the general sensing system, determining arrival angle information after modeling the channel of the general sensing system according to the exit angle information and the time delay information, and correcting the existing 3GPP channel model so as to be suitable for the general sensing system.

Fig. 9 is a flowchart of a transmission configuration method according to an embodiment of the disclosure. The method is performed by a signal transmitting end or an echo receiving end or a perception target in the ventilation system.

Fig. 9 provides another alternative based on the embodiment shown in fig. 1. As shown in fig. 9, the method may include the following steps.

S401, determining the position of the scattering cluster based on the arrival azimuth angle AOA, the arrival zenith angle ZOA and the normalized time delay information.

In some embodiments of the present disclosure, any of the executing bodies may determine the location of the scattering cluster based on the azimuth-to-arrival angle AOA, the zenith angle ZOA, and the normalized time delay information, including in particular: determining an included angle gamma' between the received signal ray and the LOS path by utilizing the AOA and the ZOA; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perception target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perception target; determining the slope of the received signal ray based on the included angle gamma'; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

Specifically, a certain multipath arrival azimuth angle AOA is expressed asThe ZOA reaching the zenith angle is expressed as theta', the included angle gamma between the emitted signal rays and the LOS diameter can be determined, and the calculation formula is the same as the formula (2)

Further, based on fig. 2, a plane in which γ is located is cut, which may be represented as an ellipse as shown in fig. 5, and according to the normalized delay information τ _n and the distance R between the signal transmitting end or the echo receiving end and the sensing target, the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the sensing target may be determined, where the calculation formula is 2a=d ₁+d ₂＝R+cτ _n.

Based on the included angle y', the slope of the received signal ray is determined, denoted by k ₂.

k ₂＝tanγ′ (11)

Further, determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ and the slope of the distances, and specifically determining an equation of the ellipse according to the long axis a of the ellipse and the distance R between the signal transmitting end or the echo receiving end and the sensing target; according to the slope k ₂ of the received signal ray, an equation of the received signal ray is determined, two intersection points can be determined by combining the equation of the received signal ray and the elliptic equation, and one intersection point is discarded to obtain the position of the scattering cluster.

Specifically, the simultaneous received signal ray equation and ellipse equation are formulated as follows:

The unitary quadratic equation is obtained as follows:

Order the The intersection point position can be expressed as follows:

In an alternative embodiment of the present disclosure, the method further comprises: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the departure azimuth angle AOD and the departure zenith angle ZOD are determined.

Further, based on R, d ₁ and d ₂, the departure azimuth AOD and the departure zenith angle ZOD can be determined, specifically, as shown in fig. 5, the scattering cluster is located as a triangle vertex in the drawing, the perpendicular line from the vertex to the top edge intersects with the point a, and based on R, d ₁ and d ₂, and angles γ and γ', the distance from the point a to the perceived target can be calculated, and the departure azimuth AOD and the departure zenith angle ZOD can be determined.

It should be understood that, similar to the embodiment shown in fig. 7, the solution of the present disclosure may be adopted to calculate the location of the scattering cluster according to the arrival angle information of the different scattering clusters 1-12 and the time delay information, so as to modify the 3GPP standard channel model, so that the method is suitable for a general sensing system.

In summary, according to the method for determining a location of a scattering cluster provided by the embodiments of the present disclosure, the method is performed by a signal transmitting end or an echo receiving end, or a perception target in a ventilation system, and includes: the method comprises the steps of determining the position of a scattering cluster based on an arrival azimuth angle AOA, an arrival zenith angle ZOA and normalized time delay information, providing a space position determining scheme suitable for modeling the scattering cluster of a channel of a general sensing system, accurately positioning the scattering cluster in the environment so as to be used for a channel model of the general sensing system, determining departure angle information after modeling the channel of the general sensing system according to the arrival angle information and the time delay information, and correcting the existing 3GPP channel model so as to be suitable for the general sensing system.

Fig. 10 is a flowchart of a method for determining a location of a scattering cluster according to an embodiment of the disclosure, which is performed by a sensing system including a signal transmitting end, an echo receiving end, and a sensing target. The embodiment depicted in fig. 10 provides a solution for determining the location of a scattering cluster for a bi-directional process.

In the present disclosure, the signal transmitting end and the echo receiving end may be a base station or a terminal, where the echo receiver needs to have a radar function, and the perceived target execution may be the base station or the terminal, or may be an object in the environment.

In the present disclosure, the signal transmitting end and the echo receiving end may be the same device or may be different devices, for example, a certain mobile communication base station has a function of active radar, may transmit a signal or may receive a signal, and then the base station may be used as the signal transmitting end and the echo receiving end at the same time, where the signal transmitting end and the echo receiving end are the same device, and the base station may also be used as only the signal transmitting end or the echo receiving end, where the signal transmitting end and the echo receiving end are different devices; for passive radar, only signal can be received, and the passive radar can not actively transmit signals as an echo receiver, and the signal transmitting end and the echo receiving end are different devices.

As shown in fig. 10, the method may include the following steps.

S501, for a path from a signal transmitting end to a sensing target, determining, by the signal transmitting end or the sensing target, a position of a scattering cluster by using any one or more combinations of the following schemes:

determining a location of the scattering cluster based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA;

Determining the position of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD and the normalized time delay information;

And

And determining the position of the scattering cluster based on the arrival azimuth angle AOA, the arrival zenith angle ZOA and the normalized time delay information.

S502, for a path from a sensing target to an echo receiving end, determining the position of a scattering cluster by the sensing target or the echo receiving end by adopting any one or more of the following schemes:

And

In the embodiment of the present disclosure, the location of the scattering cluster determined in the step S501 for the path from the signal transmitting end to the sensing target and the location of the scattering cluster determined in the step S502 for the path from the sensing target to the echo receiving end are used for channel modeling of the bidirectional path from the signal transmitting end to the sensing target to the echo receiving end in the ventilation system. Wherein, the location of the scattering cluster determined in step S501 may be the same as or different from the location of the scattering cluster determined in step S502, and the method for determining the location of the scattering cluster used in step S501 may be the same as or different from the method for determining the location of the scattering cluster used in step S502.

It should be understood that, since the sense-through system needs to model the echo signal and sense the echo signal through the echo signal and the sensing algorithm, unlike the channel model of the existing communication system, a bidirectional channel model needs to be established, where the bidirectional channel model includes a path from the signal transmitting end to the sensing target and a path from the sensing target to the echo receiving end, the present embodiment describes a scheme of determining the positions of the scattering clusters separately in the forward direction and the backward direction, that is, a procedure performed in the method of determining the positions of the scattering clusters in the bidirectional direction.

In the present disclosure, the method for determining the location of the scattering cluster may be any method including determining the location of the scattering cluster based on the exiting azimuth angle AOD, the exiting zenith angle ZOD, the arriving azimuth angle AOA, and the arriving zenith angle ZOA shown in fig. 3, determining the location of the scattering cluster based on the exiting azimuth angle AOD, the exiting zenith angle ZOD, and the normalized time delay information shown in fig. 7, or determining the location of the scattering cluster based on the arriving azimuth angle AOA, the arriving zenith angle ZOA, and the normalized time delay information shown in fig. 9, which are described in detail with reference to the embodiments shown in fig. 3, fig. 7, and fig. 9.

In an embodiment of the disclosure, when the signal transmitting end and the echo receiving end are the same device, the signal transmitting end or the sensing target may determine the position of the scattering cluster by using the method described based on the embodiment of fig. 3, fig. 7 or fig. 9, and the path from the sensing target to the echo receiving end may not be modeled any more, and the modeling of the path from the signal transmitting end to the sensing target may be directly adopted. Or in the alternative described in this embodiment, the sensing target or the echo receiving end may also determine the location of the scattering clusters for the reverse procedure based on the method described in the embodiments of fig. 3, 7 or 9.

It should be noted that, when the signal transmitting end and the echo receiving end are the same device, the position of the scattering cluster determined by the transmitting end may be different from the position of the scattering cluster determined by the sensing target in the going process, so the position of the scattering cluster determined by the transmitting end in the going process may be directly used for modeling the reverse direction or may be determined again by the sensing target; if the position of the scattering cluster is determined by the perception target in the forward process, the backward process can also re-determine the position of the scattering cluster by the receiving end, or directly model the position of the scattering cluster determined by the forward process. The same is true when the transmitting end and the receiving end are different devices, and the description thereof is omitted.

In addition, whether the signal transmitting end and the echo receiving end are the same device or not, the signal transmitting end or the sensing target may determine the location of the scattering cluster by using any method based on the embodiments of fig. 3, 7 or 9 for the path (the direction) from the signal transmitting end to the sensing target, and the sensing target or the echo receiving end may determine the location of the scattering cluster by using the same or a different method from the direction for the path (the direction) from the sensing target to the echo receiving end, which is not limited herein. For example, the forward direction may employ a method of determining the location of the scattering clusters based on the embodiment of fig. 3, the reverse direction may employ a method of the embodiment of fig. 3 as well, or a method based on the embodiment of fig. 7 or 9.

In summary, according to an embodiment of the present disclosure, a method for determining a location of a scattering cluster is performed by a sensing system, where the sensing system includes a signal transmitting end, an echo receiving end, and a sensing target, and the method includes: determining, by the signal emitting end, the location of the scattering cluster for a path from the signal emitting end to the sensing target using any of the methods of the embodiments of the present disclosure shown in fig. 3, 7, or 9; for the path from the sensing target to the echo receiving end, the sensing target determines the position of the scattering cluster by adopting any method in the embodiments shown in fig. 3, 7 or 9 of the disclosure, the disclosure provides a method for modeling a bidirectional multipath channel of a passband system, so as to describe the multipath channel experienced by an echo signal of the passband system, determine the spatial position of the scattering cluster at the same time, and modify the existing 3GPP channel model to adapt to the passband system.

In the embodiment provided by the application, the method provided by the embodiment of the application is introduced. In order to implement the functions in the method provided by the embodiment of the present application, the network device and the terminal device may include hardware structures, software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

Corresponding to the method for determining a position of a scattering cluster provided by the above-mentioned embodiments, the present disclosure also provides a device for determining a position of a scattering cluster, and since the device for determining a position of a scattering cluster provided by the embodiment of the present disclosure corresponds to the method for determining a position of a scattering cluster provided by the above-mentioned embodiments, implementation of the method for determining a position of a scattering cluster is also applicable to the device for determining a position of a scattering cluster provided by the embodiment, which will not be described in detail in the embodiment.

Fig. 11 is a schematic structural diagram of a scattering cluster location determining device 600 according to an embodiment of the disclosure, where, as shown in fig. 11, the device 600 may include: a determining module 610 is configured to determine a location of the scattering cluster according to the angle and/or the time delay information of the channel model.

According to the scattering cluster position determining device provided by the embodiment of the disclosure, the position of the scattering cluster is determined according to the angle and/or time delay information of the channel model, and the scattering cluster space position determining scheme suitable for channel modeling of the sensing system is provided, so that the scattering cluster in the environment is accurately positioned and is used for the channel model of the sensing system.

In some embodiments, the determining module 610 is configured to: and determining the position of the scattering cluster according to the angle and/or time delay information of the channel model.

In some embodiments, determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises: the location of the scattering clusters is determined based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA.

In some embodiments, determining the location of the scattering cluster based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA comprises: determining an included angle gamma between the emitted signal rays and the line-of-sight LOS diameter by utilizing AOD and ZOD; determining an included angle gamma' between the received signal rays and the LOS path by utilizing the AOA and the ZOA; an intersection point between the transmitted signal ray and the received signal ray is determined, and the location of the intersection point is determined as the location of the scattering cluster.

In some embodiments, further comprising: determining the slopes of the transmitted signal rays and the received signal rays based on the included angle gamma and the included angle gamma'; determining the distance d ₁ from the signal transmitting end or the echo receiving end to the scattering cluster and the distance d ₂ from the scattering cluster to the perception target according to the slopes of the transmitted signal ray and the received signal ray and the distance R between the signal transmitting end or the echo receiving end and the perception target; from d ₁ and d ₂, normalized delay information is determined.

In some embodiments, the determining module 610 is configured to: the location of the scattering clusters is determined based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information.

In some embodiments, determining the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information comprises: determining an included angle gamma between the emitted signal rays and the LOS diameter by using the AODs and ZOD; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perceived target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perceived target; determining the slope of the emitted signal rays based on the included angle gamma; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

In some embodiments, the method further comprises: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the azimuth of arrival AOA and the zenith angle ZOA are determined.

In some embodiments, the determination module 610 is further to: the location of the scattering clusters is determined based on the azimuth angle of arrival AOA, the zenith angle of arrival ZOA, and the normalized time delay information.

In some embodiments, determining the location of the scattering cluster based on the azimuth angle of arrival AOA, the zenith angle of arrival ZOA, and the normalized time delay information comprises: determining an included angle gamma' between the received signal ray and the LOS path by utilizing the AOA and the ZOA; determining the sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perceived target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perceived target; determining the slope of the received signal ray based on the included angle gamma'; and determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.

In some embodiments, further comprising: determining d ₁ and d ₂ based on the locations of the scattering clusters; based on R, d ₁ and d ₂, the departure azimuth angle AOD and the departure zenith angle ZOD are determined.

In summary, according to the device for determining the position of the scattering cluster provided by the embodiment of the present disclosure, the position of the scattering cluster is determined according to the angle and/or time delay information of the channel model, and the scheme for determining the spatial position of the scattering cluster suitable for channel modeling of the sensing system is provided, so that the scattering cluster in the environment is accurately positioned and is used for the channel model of the sensing system.

The application provides a sense-of-general system, comprising: the system comprises a signal transmitting end, an echo receiving end and a perception target, wherein the ventilation system is used for executing the method disclosed by the embodiment of fig. 10, determining the position of a scattering cluster and establishing a bidirectional channel model.

The embodiment of the application also provides a communication system, which comprises the transmission configuration device shown in the embodiment of fig. 11 and is used for executing the transmission configuration method shown in the embodiment of fig. 1-9.

Referring to fig. 12, fig. 12 is a schematic structural diagram of a communication device 700 according to an embodiment of the application. The communication device 700 may be a network device, a user device, a chip system, a processor or the like that supports the network device to implement the above method, or a chip, a chip system, a processor or the like that supports the user device to implement the above method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communications device 700 may include one or more processors 701. The processor 701 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 700 may further include one or more memories 702, on which a computer program 704 may be stored, and the processor 701 executes the computer program 704, so that the communication device 700 performs the method described in the above method embodiments. Optionally, the memory 702 may also have data stored therein. The communication device 700 and the memory 702 may be provided separately or may be integrated.

Optionally, the communication device 700 may further comprise a transceiver 705, an antenna 706. The transceiver 705 may be referred to as a transceiver unit, transceiver circuitry, or the like, for implementing a transceiver function. The transceiver 705 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 707 may also be included in the communication apparatus 700. The interface circuit 707 is used to receive code instructions and transmit them to the processor 701. The processor 701 executes code instructions to cause the communication device 700 to perform the method described in the method embodiments described above.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 701. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 701 may store a computer program 703, where the computer program 703 runs on the processor 701, and may cause the communication device 700 to perform the method described in the above method embodiments. The computer program 703 may be solidified in the processor 701, in which case the processor 701 may be implemented in hardware.

In one implementation, the communications apparatus 700 can include circuitry that can implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this application may be implemented on integrated circuits (INTEGRATED CIRCUIT, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application SPECIFIC INTEGRATED Circuits (ASICs), printed Circuit boards (Printed Circuit Board, PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal Oxide Semiconductor (Complementary Metal Oxide Semiconductor, CMOS), N-type metal Oxide Semiconductor (NMOS), P-type metal Oxide Semiconductor (PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a user device, but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 12. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 13. The chip shown in fig. 13 includes a processor 801 and an interface 802. Wherein the number of processors 801 may be one or more, and the number of interfaces 802 may be a plurality.

Optionally, the chip further comprises a memory 803, the memory 803 being for storing the necessary computer programs and data.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (steps) described in connection with the embodiments of the application may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the functionality in a variety of ways for each particular application, but such implementation should not be construed as beyond the scope of the embodiments of the present application.

The application also provides a readable storage medium having stored thereon instructions which when executed by a computer perform the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions according to embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, e.g., from one website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc., that contain an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., a Solid state disk (Solid STATE DISK, SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in the present application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the application, for a technical feature, the technical features of the technical feature are distinguished by a first, a second, a third, a, B, a C, a D and the like, and the technical features described by the first, the second, the third, the a, the B, the C, the D are not in sequence or in order of magnitude.

As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.

The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the disclosed aspects are achieved, and are not limited herein.

Furthermore, it is to be understood that the various embodiments of the application may be practiced alone or in combination with other embodiments as the scheme permits.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

A method of determining a location of a scattering cluster, the method being performed by a signal transmitting end or an echo receiving end, or a perception target, in a ventilation system, the method comprising:

and determining the position of the scattering cluster according to the angle and/or time delay information of the channel model.
The method of claim 1, wherein determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises:

the location of the scattering clusters is determined based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA.
The method of claim 2, wherein determining the location of the scattering cluster based on the departure azimuth angle AOD, departure zenith angle ZOD, arrival azimuth angle AOA, and arrival zenith angle ZOA comprises:

determining an included angle gamma between the emitted signal rays and the line-of-sight LOS diameter by using the AOD and the ZOD;

determining an included angle gamma' between a received signal ray and the LOS path by using the AOA and the ZOA;

an intersection point between the transmitted signal ray and the received signal ray is determined, and a position of the intersection point is determined as a position of the scattering cluster.
A method according to claim 3, characterized in that the method further comprises:

determining the slopes of the transmitted signal rays and the received signal rays based on the included angle gamma and the included angle gamma';

Determining a distance d ₁ from the signal transmitting end or the echo receiving end to the scattering cluster and a distance d ₂ from the scattering cluster to the perception target according to the slopes of the transmitted signal ray and the received signal ray and a distance R between the signal transmitting end or the echo receiving end and the perception target;

And determining normalized time delay information according to the d ₁ and the d ₂.
The method of claim 1, wherein determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises:

The location of the scattering clusters is determined based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information.
The method of claim 5, wherein determining the location of the scattering cluster based on the departure azimuth angle AOD, the departure zenith angle ZOD, and the normalized time delay information comprises:

determining an included angle gamma between the emitted signal rays and the LOS path by using the AOD and the ZOD;

determining a sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perception target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perception target;

Determining the slope of the emitted signal rays based on the included angle gamma;

And determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.
The method of claim 6, wherein the method further comprises:

Determining the d ₁ and the d ₂ based on the location of the scattering clusters;

based on the R, the d ₁, and the d ₂, an arrival azimuth angle AOA and an arrival zenith angle ZOA are determined.
The method of claim 1, wherein determining the location of the scattering clusters based on the angle and/or latency information of the channel model comprises:

the location of the scattering clusters is determined based on the azimuth angle of arrival AOA, the zenith angle of arrival ZOA, and the normalized time delay information.
The method of claim 8, wherein determining the location of the scattering cluster based on the azimuth-of-arrival angle AOA, the zenith angle ZOA, and the normalized time delay information comprises:

determining an included angle gamma' between a received signal ray and an LOS path by using the AOA and the ZOA;

determining a sum d ₁+d ₂ of the distance from the signal transmitting end or the echo receiving end to the scattering cluster and the distance from the scattering cluster to the perception target by using the normalized time delay information and the distance R between the signal transmitting end or the echo receiving end and the perception target;

determining the slope of the received signal ray based on the included angle gamma';

And determining an intersection point between the transmitted signal ray and the received signal ray according to the sum d ₁+d ₂ of the distances and the slope, and determining the position of the intersection point as the position of the scattering cluster.
The method according to claim 9, wherein the method further comprises:

Determining the d ₁ and the d ₂ based on the location of the scattering clusters;

Based on the R, the d ₁, and the d ₂, an exit azimuth angle AOD and an exit zenith angle ZOD are determined.
A method for determining a location of a scattering cluster, the method being performed by a ventilation system, the ventilation system comprising a signal transmitting end, an echo receiving end, and a perception target, the method comprising:

Determining, by the signal transmitting end, the location of a scattering cluster for a path from the signal transmitting end to the perception target using the method of any one of claims 2 to 4, the method of any one of claims 5 to 7, or the method of any one of claims 8 to 10;

Determining the location of the scattering clusters by the perception target using the method of any one of claims 2 to 4, the method of any one of claims 5 to 7, or the method of any one of claims 8 to 10 for a path from the perception target to the echo receiving end.
A scatterer position determining apparatus, the apparatus comprising:

And the determining module is used for determining the position of the scattering cluster according to the angle and/or time delay information of the channel model.
A communication device, comprising: a transceiver; a memory; a processor, coupled to the transceiver and the memory, respectively, configured to control wireless signal transceiving of the transceiver and to enable the method of any one of claims 1-11 by executing computer-executable instructions on the memory.
A computer storage medium, wherein the computer storage medium stores computer-executable instructions; the computer executable instructions, when executed by a processor, are capable of implementing the method of any one of claims 1-11.
A ventilation system, comprising: a signal transmitting end, an echo receiving end and a perception target, wherein the ventilation system is configured to perform the method of claim 11.