Communication perception integrated channel modeling method based on geometric statistics principle extension

Abstract

The invention provides a communication and perception integrated channel modeling method based on geometric statistics principle extension, and the method comprises the steps: constructing a channel simulation scene, configuring basic parameters of a channel, and obtaining large-scale parameters, communication path loss and perception sub-channel path loss, the basic parameters at least comprising the positions and speeds of a plurality of perception targets; acquiring an initial communication cluster parameter set and a sensing sub-channel cluster parameter set according to the basic parameters; according to a shared sensing sub-channel cluster parameter corresponding to a shared sensing target, correcting the initial communication cluster parameter set to obtain a corrected communication cluster parameter set including a shared communication cluster parameter, the shared sensing target being determined based on a pre-configured shared parameter; obtaining sensing cascade path loss and sensing cascade channel impulse response according to the parameters; and obtaining a communication channel impulse response according to the corrected communication cluster parameter set. Modeling depicts real sharing characteristics of communication and sensing channels, and can be well compatible with existing channel modeling standards.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication and integrated sensing and communication, and particularly relates to a communication and sensing integrated channel modeling method based on an extended geometry-based statistical principle. BACKGROUND

[0002] The International Telecommunication Union (ITU) standard proposes to define integrated sensing and communication (ISAC) as one of the typical application scenarios of the 6-Generations (6G) system. The purpose of communication is to transmit information, and the purpose of sensing is to detect and identify targets. Compared with traditional systems independent of devices, ISAC technology realizes the ability to integrate the two functions into one system, enabling base stations or terminals to communicate while sensing the surrounding environment. A channel model is a mathematical description of the propagation characteristics of radio waves in a wireless channel, and an accurate channel model is the basis for the design, technical optimization and performance evaluation of each generation of mobile communication systems. However, the existing three-dimensions (3D) geometry-based stochastic model (GBSM) of the 5-Generations (5G) is only applicable to the traditional communication channel from a base station (BS) to a user terminal (UT), and lacks consideration of the integration of sensing channels. On the one hand, applications such as sensing positioning need to determine the position and velocity of the target scatterer, and the statistical cluster in the 3D GBSM cannot map the real scatterer with physical meaning. On the other hand, due to the integration of ISAC system hardware devices and the reuse of the propagation environment, communication and sensing signals experience some of the same propagation scatterers in the wireless environment, and these scatterers will contribute to the shared clusters, paths and similar propagation parameters in the channel. The shared characteristics / correlation of the ISAC channel has been proven in field measurements, and the evaluation of the ISAC channel needs to realistically depict this shared characteristic in the channel model.

[0003] Therefore, how to realize the ISAC channel modeling depicting the channel sharing characteristics has become a research direction in the field. SUMMARY

[0004] The technical purpose of the embodiments of the present application is to provide a communication and sensing integrated channel modeling method based on an extended geometry-based statistical principle, so as to solve the problem that the current communication and sensing integrated channel model cannot depict the channel sharing characteristics.

[0005] To solve the above technical problems, the embodiment of the present application provides a communication and perception integrated channel modeling method based on a geometric statistical principle extension, comprising:

[0006] A channel simulation scene is constructed, basic parameters of the communication and perception integrated channel are configured, and large-scale parameters of channel propagation, communication path loss of the communication channel, and perception subchannel path loss of the perception channel are obtained, wherein the basic parameters at least include: scene type, network layout, antenna parameter, propagation condition, and position and speed of multiple perception targets;

[0007] According to the basic parameters, an initial communication cluster parameter set of the communication channel and a perception subchannel cluster parameter set corresponding to the perception targets in the perception channel are obtained;

[0008] According to shared perception subchannel cluster parameters corresponding to shared perception targets in the multiple perception targets, the initial communication cluster parameter set is modified to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, and the shared perception targets are determined based on preconfigured shared parameters;

[0009] According to the perception subchannel cluster parameter set, the large-scale parameters, and the perception subchannel path loss, perception cascade path loss and perception cascade channel impulse response are obtained;

[0010] According to the modified communication cluster parameter set, the large-scale parameters, and the communication path loss, communication channel impulse response is obtained.

[0011] Specifically, according to the method described above, the initial communication cluster parameter set is modified according to the shared perception subchannel cluster parameters corresponding to the shared perception targets in the multiple perception targets to obtain the modified communication cluster parameter set including the shared communication cluster parameters and the non-shared communication cluster parameters, comprising:

[0012] According to the integration of communication and perception modes and the shared perception subchannel cluster parameters, shared communication cluster parameters corresponding to the shared perception targets are obtained;

[0013] According to the minimum error principle, preselected initial communication cluster parameters corresponding to each shared communication cluster parameter are determined in the initial communication cluster parameter set;

[0014] The preselected initial communication cluster parameters in the initial communication cluster parameter set are updated to the corresponding shared communication cluster parameters to obtain the modified communication cluster parameter set.

[0015] Further, according to the method described above, the shared communication cluster parameters corresponding to the shared perception targets are obtained according to the integration of communication and perception modes and the shared perception subchannel cluster parameters, comprising:

[0016] According to the integration of the communication and sensing mode, a first communication sub-channel cluster parameter of a communication transmitter to the shared sensing target and a second communication sub-channel cluster parameter of the shared sensing target to a communication receiver are acquired;

[0017] According to the first communication sub-channel cluster parameter and the second communication sub-channel cluster parameter, the shared communication cluster parameter is obtained in a cascading manner.

[0018] Preferably, the method as described above, the acquiring, according to the integration of the communication and sensing mode, of a first communication sub-channel cluster parameter of a communication transmitter to the shared sensing target and a second communication sub-channel cluster parameter of the shared sensing target to a communication receiver comprises at least one of:

[0019] When the integration of the communication and sensing mode is the integration of the communication transmitter and the single-station sensing mode, the first communication sub-channel cluster parameter multiplexes a first sensing sub-channel cluster parameter about the sensing transmitter to the shared sensing target in the shared sensing sub-channel cluster parameter, and the second communication sub-channel cluster parameter is acquired according to the position of the communication receiver;

[0020] When the integration of the communication and sensing mode is the integration of the communication receiver and the single-station sensing mode, the second communication sub-channel cluster parameter multiplexes a second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter, and the first communication sub-channel cluster parameter is acquired according to the position of the communication transmitter;

[0021] When the integration of the communication and sensing mode is the integration of the communication transmitter and the communication receiver and the double-station sensing mode, the first communication sub-channel cluster parameter multiplexes a first sensing sub-channel cluster parameter about the sensing transmitter to the shared sensing target in the shared sensing sub-channel cluster parameter, and the second communication sub-channel cluster parameter multiplexes a second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter.

[0022] Specifically, the method as described above, the acquiring, according to the integration of the communication and sensing mode and the shared sensing sub-channel cluster parameter, of the shared communication cluster parameter corresponding to the shared sensing target comprises:

[0023] When the integration of the communication and sensing modes is the integration of a communication transmitter and a single-station sensing mode, the shared communication cluster parameter multiplexes the vertical departure angle and / or the horizontal departure angle in the first sensing subchannel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical departure angle and / or the horizontal departure angle;

[0024] Or, when the integration of the communication and sensing modes is the integration of a communication receiver and a single-station sensing mode, the shared communication cluster parameter multiplexes the vertical arrival angle and / or the horizontal arrival angle in the second sensing subchannel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical arrival angle and / or the horizontal arrival angle;

[0025] Or, when the integration of the communication and sensing modes is the integration of the communication transmitter and the communication receiver and a double-station sensing mode, the shared communication cluster parameter multiplexes all the cluster parameters in the first sensing subchannel cluster parameter and the second sensing subchannel cluster parameter of the shared sensing target.

[0026] Specifically, the method as described above, the obtaining of the sensing concatenated path loss and the sensing concatenated channel impulse response according to the sensing subchannel cluster parameter set, the large-scale parameter, and the sensing subchannel path loss comprises:

[0027] Obtaining a radar cross section area complex coefficient corresponding to the sensing target;

[0028] Generating a first cross-polarization ratio conforming to a lognormal distribution for each multipath in the sensing channel, and obtaining a random first initial phase;

[0029] Convolving a sensing subchannel according to the sensing subchannel cluster parameter set, the first cross-polarization ratio, the first initial phase, and the radar cross section area complex coefficient, to obtain a sensing concatenated channel coefficient;

[0030] Obtaining the sensing concatenated path loss according to the sensing subchannel path loss and the radar cross section area complex coefficient;

[0031] Coupling the sensing concatenated path loss and the shadow fading in the large-scale parameter to the sensing concatenated channel coefficient, to obtain the sensing concatenated channel impulse response.

[0032] Specifically, the method as described above, the obtaining of the communication channel impulse response according to the modified communication cluster parameter set, the large-scale parameter, and the communication path loss comprises:

[0033] generate a second cross-polarization ratio conforming to a lognormal distribution for each multipath in the communication channel, and obtain a random second initial phase;

[0034] obtain a communication channel coefficient according to the modified communication cluster parameter set, the second cross-polarization ratio, and the second initial phase;

[0035] couple the path loss and the shadow fading in the large-scale parameter to the communication channel coefficient to obtain the communication channel impulse response.

[0036] Specifically, the method as described above, the step of obtaining the sensing subchannel path loss comprises:

[0037] respectively obtain two three-dimensional distances between the sensing transmitter and the sensing receiver and the same sensing target;

[0038] obtain two sensing subchannel path losses between the sensing transmitter and the sensing receiver and the same sensing target according to the three-dimensional distances and a preset path loss generation algorithm.

[0039] Another embodiment of the present application further provides a control device for communication and sensing integrated channel modeling based on geometric statistical principle extension, comprising:

[0040] a first processing module configured to construct a channel simulation scene, configure basic parameters of a communication and sensing integrated channel, and obtain large-scale parameters of channel propagation, communication path loss of a communication channel, and sensing subchannel path loss of a sensing channel, wherein the basic parameters at least include: scene type, network layout, antenna parameter, propagation condition, and positions and speeds of multiple sensing targets;

[0041] a second processing module configured to obtain an initial communication cluster parameter set of the communication channel and a sensing subchannel cluster parameter set corresponding to the sensing target in the sensing channel according to the basic parameters;

[0042] a third processing module configured to modify the initial communication cluster parameter set according to a shared sensing subchannel cluster parameter corresponding to a shared sensing target in the multiple sensing targets to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, the shared sensing target being determined based on a preconfigured shared parameter;

[0043] a fourth processing module configured to obtain a sensing cascaded path loss and a sensing cascaded channel impulse response according to the sensing subchannel cluster parameter set, the large-scale parameters, and the sensing subchannel path loss;

[0044] The fifth processing module is configured to obtain a communication channel impulse response according to the modified communication cluster parameter set, the large-scale parameter, and the communication path loss.

[0045] Still another embodiment of the present application provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the communication and perception integrated channel modeling method based on the extended geometric statistical principle.

[0046] Still another embodiment of the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the communication and perception integrated channel modeling method based on the extended geometric statistical principle.

[0047] Still another embodiment of the present application provides a computer program product, comprising computer instructions, and the computer instructions, when executed by a processor, implement the steps of the communication and perception integrated channel modeling method based on the extended geometric statistical principle.

[0048] Compared with the prior art, the communication and perception integrated channel modeling method based on the extended geometric statistical principle has at least the following beneficial effects:

[0049] The modeling method provided in the embodiment considers the generation of the communication and perception channels at the same time, and realizes the superposition of the shared cluster and the non-shared cluster in modeling, describes the real sharing characteristics of the communication and perception channels in the same propagation environment, and can well compatible with the existing channel modeling standards. At the same time, by setting the sharing parameter, the trade-off between determinacy and statistics is considered, the determinacy parameter of the perception target is introduced in the communication channel, and the statistical law of the communication channel parameter in the 3GPP standard is maximally maintained, thereby combining the characteristics of low complexity of statistical modeling and high precision of deterministic modeling. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 FIG. 1 is one of flowcharts of the communication and perception integrated channel modeling method based on the extended geometric statistical principle in the present application;

[0051] Figure 2 FIG. 2 is another of flowcharts of the communication and perception integrated channel modeling method based on the extended geometric statistical principle in the present application;

[0052] Figure 3 FIG. 3 is a third of flowcharts of the communication and perception integrated channel modeling method based on the extended geometric statistical principle in the present application;

[0053] Figure 4Figure 4 is a flowchart illustrating a method for modeling a communication and perception integrated channel based on the geometric statistics principle according to an embodiment of the present application;

[0054] Figure 5 Figure 4 is a flowchart illustrating a method for modeling a communication and perception integrated channel based on the geometric statistics principle according to an embodiment of the present application;

[0055] Figure 6 Figure 4 is a flowchart illustrating a method for modeling a communication and perception integrated channel based on the geometric statistics principle according to an embodiment of the present application; DETAILED DESCRIPTION

[0056] To make the technical problems solved by the present application, technical solutions and advantages clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, it should be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and configurations are omitted for clarity and conciseness.

[0057] It should be understood that the term "one embodiment" or "an embodiment" mentioned throughout the specification means that a specific feature, structure or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0058] In various embodiments of the present application, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0059] It should be understood that the term "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0060] In the embodiments provided in the present application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that the determination of B according to A does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0061] It should be noted that the embodiment of the present application is a communication and perception integrated channel modeling method extended based on geometric statistical principle, and preferably, the modeling method is an extension based on the modeling process of 3GPP TR38.901 standard.

[0062] Referring to Figure 1 An embodiment of the present application provides a communication and perception integrated channel modeling method extended based on geometric statistical principle, comprising:

[0063] In step S101, a channel simulation scene is constructed, basic parameters of a communication and perception integrated channel are configured, and large-scale parameters of channel propagation, communication path loss of a communication channel, and perception subchannel path loss of a perception channel are obtained, wherein the basic parameters at least include: scene type, network layout, antenna parameter, propagation condition, and positions and speeds of multiple perception targets;

[0064] In step S102, according to the basic parameters, an initial communication cluster parameter set of the communication channel and a perception subchannel cluster parameter set corresponding to the perception targets in the perception channel are obtained;

[0065] In step S103, according to shared perception subchannel cluster parameters corresponding to shared perception targets in the multiple perception targets, the initial communication cluster parameter set is modified to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, and the shared perception targets are determined based on preconfigured shared parameters;

[0066] In step S104, according to the perception subchannel cluster parameter set, the large-scale parameters, and the perception subchannel path loss, perception cascaded path loss and perception cascaded channel impulse response are obtained.

[0067] In step S105, according to the modified communication cluster parameter set, the large-scale parameters, and the communication path loss, communication channel impulse response is obtained.

[0068] The embodiment provides a communication and perception integrated channel modeling method based on a geometric statistical principle extension, wherein a channel simulation scene of the communication and perception integrated channel is first constructed, basic parameters of the communication and perception integrated channel are configured, and large-scale parameters of channel propagation, path loss of a communication channel and perception subchannel path loss of a perception channel are obtained, the basic parameters at least including: a scene type, a network layout, antenna parameters, propagation conditions and a plurality of perception targets, wherein the communication channel can be generated according to the pre-configured scene type, network layout, antenna parameters and propagation conditions and the like. In the embodiment, the standard process of configuring the basic parameters is distinguished from the existing process, and the positions and speeds of the plurality of perception targets are also set when the basic parameters are configured, so as to generate the perception channel according to the basic parameters and facilitate the implementation of the communication and perception integration. Specifically, the large-scale parameters of the channel propagation are generated based on a parameter table statistics of 3GPP, for example, are randomly determined according to the statistical distribution extracted in the channel measurement. The path loss of the communication channel is generated based on a preset path loss generation algorithm, for example, a path loss generation algorithm in 3GPP TR 38.901; since the perception channel is a cascaded channel including a first perception subchannel from a perception transmitter to a perception target and a second perception subchannel from the perception target to a perception receiver, the path loss of the perception channel is determined based on the perception subchannel path loss of the first perception subchannel and the second perception subchannel, and the perception subchannel path loss can also be generated based on the preset path loss generation algorithm.

[0069] Specifically, the scene type includes but is not limited to: urban macro (Urban Macro, UMa), urban micro (Urban Micro, UMi), rural macro (Rural Macro, RMa), indoor hotspot (Indoor hotspot, InH) and outdoor to indoor (Outdoor to indoor, O2I).

[0070] The network layout includes but is not limited to a communication transmitter (base station) and a communication receiver (user) configured for the communication channel and a perception transmitter and a perception receiver configured for the perception channel.

[0071] The antenna parameters include but are not limited to: the number of antennas corresponding to the communication transmitter, the communication receiver, the perception transmitter and the perception receiver respectively. For example, the communication transmitter is configured with P antennas, the communication receiver is configured with Q antennas, the perception transmitter is configured with P' antennas, and the perception receiver is configured with Q' antennas.

[0072] The propagation conditions include but are not limited to: line of sight transmission (Line Of Sight, LOS) and non-line of sight transmission (NO Line Of Sight, NLOS).

[0073] The large-scale parameters of the channel propagation include, but are not limited to, delay spread (DS), angle spread (AS), slow fading (SF), Rician K-factor, etc., wherein the angle spread specifically includes azimuth spread of departure angle (ASD), azimuth spread of arrival angle (ASA), zenith spread of departure angle (ZSD), and zenith spread of arrival angle (ZSA).

[0074] In addition, the basic parameters further include position parameters of the communication transmitter, the communication receiver, the sensing transmitter, and the sensing receiver.

[0075] It should be noted that the sensing target described in the present application is a scatterer with a known specific position, which is a special kind of propagation scatterer. In addition to the sensing target, other randomly generated scatterers can also be included in the communication channel in the constructed channel simulation scene.

[0076] Further, based on the above-obtained basic parameters and the preset step of obtaining the cluster parameters in the channel, an initial communication cluster parameter set of the communication channel and a sensing subchannel cluster parameter set corresponding to the sensing target in the sensing channel are respectively obtained, wherein the cluster parameters include, but are not limited to, the delay, the angle (zenith angle of arrival (ZoA), zenith angle of departure (ZoD), azimuth angle of arrival (AoA), and azimuth angle of departure (AoD)), and the power. The parameters in the sensing subchannel cluster parameter set include first sensing subchannel cluster parameters based on a first sensing subchannel and second sensing subchannel cluster parameters based on a second sensing subchannel. Optionally, the sensing subchannel cluster parameter set can be divided into a first sensing subchannel cluster parameter set for carrying the first sensing subchannel cluster parameters and a second sensing subchannel cluster parameter set for carrying the second sensing subchannel cluster parameters.

[0077] Since some scatterers in the communication-aware integrated channel can contribute to the clusters, paths and similar propagation parameters shared in the communication and awareness channels, in order to facilitate the description of this sharing characteristic, the types of awareness targets are pre-divided into shared awareness targets and non-shared awareness targets, at this time the shared awareness sub-channel cluster parameters corresponding to the shared awareness targets and the non-shared awareness sub-channel cluster parameters corresponding to the non-shared awareness targets can be determined respectively, and then the shared awareness sub-channel cluster parameters are fed back to the modeling process of the communication channel, and the initial communication cluster parameter set is modified through the shared awareness sub-channel cluster parameters, to obtain a modified communication cluster parameter set containing shared communication cluster parameters and non-shared communication cluster parameters, thereby describing the channel sharing characteristic. It should be noted that in the initial communication cluster parameter set, all initial communication clusters are randomly generated non-shared clusters, and the modified modified communication cluster parameter set contains shared communication cluster parameters and non-shared communication cluster parameters.

[0078] Specifically, the shared awareness target can be determined according to the pre-configured sharing parameter, wherein the sharing parameter includes but is not limited to the sharing ratio and the sharing factor. It should be noted that the sharing ratio described here is the ratio of the shared awareness target to all awareness targets in the scene, and the sharing factor is a 1xL-dimensional vector, where L is the total number of awareness targets. By setting the coefficients of each element in the vector, the shared awareness target and the non-shared awareness target can be distinguished, for example: 0 represents a non-shared awareness target and 1 represents a shared awareness target.

[0079] After obtaining the modified communication cluster parameter set, the communication channel impulse response with sharing characteristics can be obtained according to the modified communication cluster parameter set and the above-mentioned large-scale parameters and communication path loss, thereby realizing the construction of the communication channel in the communication-aware integrated channel. At the same time, the awareness cascade path loss can be obtained according to the awareness sub-channel path loss, and the awareness cascade channel impulse response can be further obtained according to the awareness sub-channel cluster parameter set, the large-scale parameters and the above-mentioned awareness cascade path loss, thereby realizing the construction of the awareness channel in the communication-aware integrated channel.

[0080] In summary, the modeling method provided by the embodiment simultaneously considers the generation of the communication and awareness channels, and realizes the superposition of the shared clusters and the non-shared clusters in the modeling, describes the real sharing characteristics of the communication and awareness channels in the same propagation environment, and can well compatible with the existing channel modeling standards. At the same time, by setting the sharing parameter, the trade-off between determinism and statistics is considered, the statistical law of the communication channel parameters in the 3GPP standard is maximized while the determinism parameter of the awareness target is introduced in the communication channel, thereby combining the low complexity of statistical modeling and the high precision of deterministic modeling.

[0081] In a specific embodiment, after obtaining the set of sensing sub-channel cluster parameters, the shared parameters can be decoupled into shared sensing clusters and non-shared sensing clusters according to the shared parameters, and it is to be noted that the sensing clusters (shared sensing clusters and non-shared sensing clusters) described herein include the first sensing sub-channel cluster parameters and the second sensing sub-channel cluster parameters corresponding to a sensing target. In the case of shared parameters being shared factors, the decoupling method based on shared parameters can be:

[0082]

[0083]

[0084] wherein, is the sensing cluster contributed by the sensing target l, is the shared sensing cluster contributed by the shared sensing target l s0 , is the non-shared sensing cluster contributed by the non-shared sensing target l s1 . L×1 is the unit vector, S is the shared factor, containing L non-negative real values, that is, S = [S1, …, S l , L ].

[0085] Meanwhile, taking line-of-sight transmission as an example, the total delay parameter of the cascaded channel LOS cluster can be obtained based on the set of sensing sub-channel cluster parameters, which can be expressed as:

[0086]

[0087] wherein, is the total delay parameter, is the first sensing sub-channel delay parameter, is the second sensing sub-channel delay parameter, is the three-dimensional distance between the sensing receiver antenna q' and the scatterer l, is the three-dimensional distance between the sensing transmitter antenna p' and the scatterer l, and c is the propagation speed. Further, the angle parameters of the sensing receiver and the sensing transmitter under line-of-sight transmission can be calculated in the global coordinate system, and when only the cascaded channel LOS cluster under line-of-sight transmission is considered, the angle parameters of the sensing receiver and the sensing transmitter can be directly estimated as the angle of the cascaded channel cluster under line-of-sight transmission.

[0088] In a specific embodiment, the method as described above, the step of obtaining the sensing sub-channel path loss comprises:

[0089] respectively obtaining two three-dimensional distances between the sensing transmitter and the sensing receiver and the same sensing target;

[0090] According to the three-dimensional distance and a preset path loss generation algorithm, two path losses of the perception sub-channels between the perception transmitter and the perception receiver and the same perception target are obtained.

[0091] In the embodiment, how to obtain the path loss of the perception sub-channel in the perception channel is illustrated. Firstly, two three-dimensional distances between the same perception target and the perception transmitter and the perception receiver are obtained. The formula for obtaining the three-dimensional distance can be expressed as:

[0092]

[0093]

[0094] wherein (x q′ ,y q′ ,z q′ ) represents the coordinates of the perception receiver antenna q', (x p′ ,y p′ ,z p′ ) represents the coordinates of the perception transmitter antenna p', and (x l ,y l ,z l ) represents the coordinates of the perception target l. ||·||2 represents the Euclidean norm.

[0095] Further, according to the preset path loss generation algorithm, the path losses of the two sub-channels are obtained. The preset path loss generation algorithm is the path loss formula defined in 3GPP TR 38.901 or the free space loss formula.

[0096] Referring to Figure 2 , specifically, according to the method described above, the initial communication cluster parameter set is modified according to the shared perception sub-channel cluster parameters corresponding to the shared perception targets to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, which includes:

[0097] In step S201, according to the integration of communication and perception modes and the shared perception sub-channel cluster parameters, the shared communication cluster parameters corresponding to the shared perception targets are obtained.

[0098] In step S202, according to the minimum error principle, the preselected initial communication cluster parameters corresponding to each shared communication cluster parameter are determined in the initial communication cluster parameter set.

[0099] In step S203, the preselected initial communication cluster parameters in the initial communication cluster parameter set are updated to the corresponding shared communication cluster parameters to obtain the modified communication cluster parameter set.

[0100] In the embodiment, how to modify the initial communication cluster parameter set based on the shared sensing sub-cluster parameter is exemplified, wherein the sensing mode can be single-station sensing or double-station sensing, in the single-station sensing, the sensing receiver and the sensing transmitter are the same device, in this case, part of the shared sensing sub-cluster parameter corresponds to the communication cluster parameter, the shared communication cluster parameter corresponding to the shared sensing target needs to be obtained according to the integration of the communication and sensing mode and the shared sensing sub-cluster parameter, and then the initial communication cluster parameter set is modified based on the shared communication cluster parameter, so that the modified communication cluster parameter set with the sharing characteristic is obtained.

[0101] Specifically, when the initial communication cluster parameter set is modified based on the shared communication cluster parameter, the shared communication cluster parameter is preferably added to the initial communication cluster parameter set in a replacement manner to obtain the modified communication cluster parameter set, so as to maximize the parameter statistical value in 3GPP. More specifically, according to the error minimum principle, the preselected initial communication cluster parameter in the initial communication cluster parameter set closest to the shared communication cluster parameter is determined, and then the preselected initial communication cluster parameter is updated to the corresponding shared communication cluster parameter to obtain the required modified communication cluster parameter set.

[0102] Wherein, the error minimum principle is also related to the integration of the communication and sensing mode, in a specific embodiment, when the integration of the communication and sensing mode is the integration of the communication transmitter and the single-station sensing mode, the calculation according to the error minimum principle can be represented as:

[0103]

[0104]

[0105]

[0106] Wherein, gap aod (l,n) represents the AoD error of the sensing target l and the initial communication cluster n;

[0107] gap zod (l,n) represents the ZoD error of the sensing target l and the initial communication cluster n;

[0108] represents the AoD of the sensing target l under the line-of-sight transmission condition;

[0109] represents the ZoD of the sensing target l under the line-of-sight transmission condition;

[0110] is the AoD of the initial communication cluster n;

[0111] ZoD of initial communication cluster n;

[0112] representing shared cluster pair n c0 .

[0113] Further, the method as described above, the obtaining of the shared communication cluster parameter corresponding to the shared sensing target according to the integration of the communication and sensing mode and the shared sensing subchannel cluster parameter, comprises:

[0114] obtaining a first communication subchannel cluster parameter of a communication transmitter to the shared sensing target and a second communication subchannel cluster parameter of the shared sensing target to a communication receiver according to the integration of the communication and sensing mode;

[0115] obtaining the shared communication cluster parameter according to the first communication subchannel cluster parameter and the second communication subchannel cluster parameter.

[0116] In the embodiment, when obtaining the shared communication cluster parameter, the subchannel parameter of the shared sensing subchannel cluster is multiplexed with the shared communication cluster parameter, wherein, since the communication receiver and the communication transmitter are generally not the same device, it includes a first communication subchannel of the communication transmitter to the shared scattering body and a second communication subchannel of the shared scattering body to the communication receiver. Different integration of the communication and sensing mode will lead to different shared subchannels of the communication channel and the sensing channel, so it is necessary to determine the first communication subchannel cluster parameter and the second communication subchannel cluster parameter based on the integration of the communication and sensing mode, and determine the shared communication cluster parameter through the shared sensing target based on the first communication subchannel cluster parameter and the second communication subchannel cluster parameter. For example, the total delay parameter in the shared communication cluster parameter is determined as the sum of the delay parameters in the first communication subchannel cluster parameter and the second communication subchannel cluster parameter through the same shared sensing target.

[0117] The following illustrates how to specifically obtain the first communication subchannel cluster parameter and the second communication subchannel cluster parameter. Preferably, the method as described above, the obtaining of the first communication subchannel cluster parameter of the communication transmitter to the shared sensing target and the second communication subchannel cluster parameter of the shared sensing target to the communication receiver according to the integration of the communication and sensing mode, comprises at least one of the following:

[0118] When the integration of the communication and sensing modes is the integration of the communication transmitter and the single-station sensing mode, the first communication sub-channel cluster parameter multiplexes the first sensing sub-channel cluster parameter about the sensing transmitter to the shared sensing target in the shared sensing sub-channel cluster parameter, and acquires the second communication sub-channel cluster parameter about the shared sensing target to the communication receiver according to the position of the communication receiver; in this case, the communication channel and the sensing channel multiplex the sub-channels between the transmitter and the sensing target, so the first communication sub-channel cluster parameter can be directly multiplexed with the first sensing sub-channel cluster parameter, and the sub-channels between the communication receiver and the sensing target are different from the sub-channels between the sensing receiver and the sensing target, so the second communication sub-channel cluster parameter needs to be acquired in the manner of acquiring the channel cluster parameter according to the position of the communication receiver.

[0119] When the integration of the communication and sensing modes is the integration of the communication receiver and the single-station sensing mode, the second communication sub-channel cluster parameter multiplexes the second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter, and acquires the first communication sub-channel cluster parameter about the communication transmitter to the shared sensing target according to the position of the communication transmitter; in this case, the communication channel and the sensing channel multiplex the sub-channels between the receiver and the sensing target, so the second communication sub-channel cluster parameter can be directly multiplexed with the second sensing sub-channel cluster parameter, and the sub-channels between the communication transmitter and the sensing target are different from the sub-channels between the sensing transmitter and the sensing target, so the first communication sub-channel cluster parameter needs to be acquired in the manner of acquiring the channel cluster parameter according to the position of the communication receiver.

[0120] When the integration of the communication and sensing modes is the integration of the communication transmitter and the communication receiver and the double-station sensing mode, the first communication sub-channel cluster parameter multiplexes the first sensing sub-channel cluster parameter about the sensing transmitter to the shared sensing target in the shared sensing sub-channel cluster parameter, and the second communication sub-channel cluster parameter multiplexes the second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter; in this case, the communication channel and the sensing channel multiplex the sub-channels between the transmitter and the sensing target, so the first communication sub-channel cluster parameter can be directly multiplexed with the first sensing sub-channel cluster parameter, and the communication channel and the sensing channel multiplex the sub-channels between the receiver and the sensing target, so the second communication sub-channel cluster parameter can be directly multiplexed with the second sensing sub-channel cluster parameter.

[0121] In another embodiment, when the shared communication cluster parameter is acquired, at least part of the parameters in the shared sensing sub-channel cluster parameter corresponding to the shared sensing target are multiplexed in the shared communication cluster.

[0122] Specifically, the method as described above, the obtaining of the shared communication cluster parameter corresponding to the shared sensing target according to the integration of the communication and sensing mode and the shared sensing sub-channel cluster parameter comprises:

[0123] When the integration of the communication and sensing mode is the integration of the communication transmitter and the single-station sensing mode, the shared communication cluster parameter multiplexes the vertical departure angle and / or the horizontal departure angle in the first sensing sub-channel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical departure angle and / or the horizontal departure angle; in this case, the vertical departure angle in the shared sensing sub-channel cluster parameter is consistent with the vertical departure angle in the shared communication cluster parameter, and / or the horizontal departure angle in the sensing target sensing cluster parameter is consistent with the horizontal departure angle in the shared communication cluster parameter, so the shared communication cluster parameter can multiplex the vertical departure angle and / or the horizontal departure angle in the shared sensing sub-channel cluster parameter, and reversely generate the remaining cluster parameters in the shared communication cluster parameter according to the 3GPP process, i.e. including the time delay, the power and other angle parameters.

[0124] Or, when the integration of the communication and sensing mode is the integration of the communication receiver and the single-station sensing mode, the shared communication cluster parameter multiplexes the vertical arrival angle and / or the horizontal arrival angle in the second sensing sub-channel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical arrival angle and / or the horizontal arrival angle; in this case, the vertical arrival angle in the shared sensing sub-channel cluster parameter is consistent with the vertical arrival angle in the shared communication cluster parameter, and / or the horizontal arrival angle in the shared sensing sub-channel cluster parameter is consistent with the horizontal arrival angle in the shared communication cluster parameter, so the shared communication cluster parameter multiplexes the vertical arrival angle and / or the horizontal arrival angle in the shared sensing sub-channel cluster parameter, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the 3GPP process, i.e. including the time delay, the power and other angle parameters.

[0125] Or, when the integration of the communication and sensing mode is the integration of the communication transmitter and the communication receiver and the double-station sensing mode, the shared communication cluster parameter multiplexes all the cluster parameters in the first sensing sub-channel cluster parameter and the second sensing sub-channel cluster parameter of the shared sensing target. In this case, all the cluster parameters in the shared sensing sub-channel cluster parameter are consistent with all the cluster parameters in the shared communication cluster parameter, so the shared communication cluster parameter multiplexes all the cluster parameters in the shared sensing sub-channel cluster parameter.

[0126] It should be noted that, when the shared communication cluster parameter is obtained, all the sensing sub-channel parameters can be fed back to the communication process and the corresponding communication cluster parameter is generated, and then the shared communication cluster corresponding to the shared sensing target is determined. The determination of the shared communication cluster can be expressed as:

[0127]

[0128] wherein, is a shared communication cluster, is a communication cluster contributed by the sensing target l.

[0129] Alternatively, according to the 0 / 1 parameter determined in S, only the sensing subchannel parameter corresponding to the shared sensing target is fed back to the communication flow, and the corresponding shared communication cluster parameter is generated.

[0130] Referring to Figure 3 , specifically, the method as described above, the sensing cascade path loss and the sensing cascade channel impulse response are obtained according to the sensing subchannel cluster parameter set, the large-scale parameter, and the sensing subchannel path loss, comprising:

[0131] Step S301, obtaining the radar scattering cross section complex coefficient corresponding to the sensing target. Wherein, the radar scattering cross section complex coefficient is in the large-scale level, the modulus value is set to a fixed value or a random value in a preset range, the preset range depends on the object target attribute under a specific carrier frequency, and in the small-scale level, it is a function of the incident target angle and the exit target angle, which can be modeled as a 2x2 matrix with different polarization directions, which can be specifically represented as:

[0132]

[0133] wherein, The value of is the angle of the multipath incident to the sensing target and the exit angle of the sensing target .

[0134] Step S302, generating a first cross-polarization ratio conforming to a lognormal distribution for each multipath in the sensing channel, and obtaining a random first initial phase; wherein, the generation of the first cross-polarization ratio is preferably generated according to a preset standard, for example, the 3GPP TR 38.901 standard.

[0135] Step S303, convolving the sensing subchannel according to the sensing subchannel cluster parameter set, the first cross-polarization ratio, the first initial phase, and the radar scattering cross section complex coefficient to obtain the sensing cascade channel coefficient; in a specific embodiment, the formula for obtaining the sensing cascade channel coefficient is represented as:

[0136]

[0137] wherein, h s,q′,l,p′ (t,τ s ) represents the channel coefficient corresponding to the cluster contributed by the sensing target l, and L represents the total number of sensing targets.

[0138] More specifically, since the perception targets can be divided into shared perception targets and non-shared perception targets, the above formula can also be expressed as:

[0139]

[0140] in, Represents the shared perception target l s0 The channel coefficient corresponding to the contributed perceptual cluster, L s0 represents the total number of shared perception targets;

[0141] Represents the non-shared perception target l s1 The channel coefficient corresponding to the contributed perceptual cluster, L s1 Represents the total number of non-shared awareness targets.

[0142] Specifically, the channel coefficient corresponding to the cluster contributed by each perception target is expressed as:

[0143] h s,q′,l,p′ (t,τ s )=h s,q′,l (t,τ s )*σ l *h s,l,p′ (t,τ s )

[0144] Among them, h s,q′,l (t,τ s ) represents the subchannel coefficient corresponding to the subchannel cluster between the sensing target l and the sensing receiver; h s,l,p′ (t,τ s ) represents the subchannel coefficient corresponding to the subchannel cluster between the sensing target l and the sensing transmitter.

[0145] Furthermore, the channel coefficients corresponding to the clusters contributed by each perception target can be specifically expressed as:

[0146]

[0147] Among them, the cluster label n = 1, 2, ..., N, and the multipath label m = 1, 2, ..., M.

[0148] λ0 represents the wavelength of the carrier.

[0149] j represents the imaginary unit.

[0150] and They represent the amplitude of cluster n path m in the subchannel from sensing target l to sensing receiver antenna q′ and the subchannel from sensing transmitter antenna p′ to sensing target l in the sensing channel respectively.

[0151] denote the ZoA, AoA, ZoD and AoD of cluster n path m in the sensing channel at the sensing receiver and sensing transmitter, respectively.

[0152] and They represent the ZoD and AoD of cluster n with diameter m of the outgoing sensing target, respectively.

[0153] and They represent the ZoA and AoA of cluster n with diameter m of the outgoing sensing target, respectively.

[0154] and denote the sensing receiver antenna q' and the sensing transmitter antenna p' at θ and Directional radiation pattern.

[0155] Indicates the combination of four polarization directions Random initial phase of cluster n with diameter m in the down-sensing channel.

[0156] k s,n,m It represents the cross-polarization ratio of cluster n and diameter m in the communication channel.

[0157] It represents the radar cross section of the target l with incident polarization direction i and emitted polarization direction j.

[0158] and They represent the unit sphere coordinate vectors of cluster n diameter m in the sensing receiver and sensing transmitter respectively.

[0159] and denote the position vectors of the perceptual receiver and the perceptual transmitter respectively.

[0160] f d,s,n,m represents the Doppler shift of cluster n with diameter m in the sensing channel.

[0161] and Represents the sensing target l to the sensing receiving antenna q ′ and the time delay of cluster n path m in the subchannel from the sensing transmitting antenna to the sensing target l.

[0162] τ s Represents the perceived propagation delay.

[0163] It should be noted that the amplitude of the multipath ( and ), delay( and ), Doppler shift ( and ) respectively contain two sub-channels. Random phase is expressed as the joint result of two sub-channels.

[0164] In step S304, the sensing concatenated path loss is obtained according to the sensing sub-channel path loss and the radar cross section complex coefficient. In this step, it is specifically disclosed that the sensing concatenated path loss is determined according to the sensing sub-channel path loss and the radar cross section complex coefficient. In a specific embodiment, the calculation formula for obtaining the sensing concatenated path loss can be expressed as:

[0165]

[0166] wherein, PL(d l,q′ ) represents the sub-channel path loss of the sub-channel corresponding to the sensing receiver antenna q' and the sensing target l; PL(s l,p′ ) represents the sub-channel path loss of the sub-channel corresponding to the sensing transmitter antenna p' and the sensing target l; λ0 is the wavelength; σ l is the radar cross section complex coefficient corresponding to the sensing target.

[0167] In step S305, the sensing concatenated path loss and the shadow fading in the large-scale parameter are coupled to the sensing concatenated channel coefficient to obtain the sensing concatenated channel impulse response. Further, by coupling the concatenated path loss and the shadow fading to the sensing channel coefficient, the final required sensing channel impulse response can be obtained. Since the step of coupling the path loss and the shadow fading has been widely applied in the prior art, it will not be described here.

[0168] In a specific embodiment, before generating the cross-polarization ratio and obtaining the random first initial phase, it further includes generating random environmental interference or clutter interference.

[0169] Referring to Figure 4 , specifically, the method as described above, the communication channel impulse response is obtained according to the modified communication cluster parameter set, the large-scale parameter and the communication path loss, including:

[0170] In step S401, a second cross-polarization ratio conforming to a lognormal distribution is generated for each multipath in the communication channel, and a random second initial phase is obtained. The preset standard is preferably the 3GPP TR 38.901 standard.

[0171] Step S402: Obtain a communication channel coefficient based on the modified communication cluster parameter set, the second cross-polarization ratio, and the second initial phase. In a specific embodiment, since the communication cluster parameter set is a set based on the modified shared sensing subchannel parameters, including the initial communication cluster parameters that are not modified (i.e., non-shared communication cluster parameters) and the modified shared communication cluster parameters corresponding to the shared sensing target, the communication channel coefficient is the sum of the channel coefficients corresponding to each non-shared communication cluster and the channel coefficients corresponding to each shared communication cluster, which can be specifically expressed as:

[0172]

[0173] in, represents the channel coefficient corresponding to the shared communication cluster; Represents the channel coefficient corresponding to the non-shared communication cluster.

[0174] Specifically, the channel coefficients corresponding to the shared communication cluster and / or the non-shared communication cluster can be expressed as:

[0175]

[0176] Among them, the cluster label n = 1, 2, ..., N, and the multipath label m = 1, 2, ..., M.

[0177] λ0 represents the wavelength of the carrier.

[0178] j represents the imaginary unit.

[0179] a c,n,m It represents the magnitude of cluster n diameter m in the communication channel.

[0180] They represent the ZoA, AoA, ZoD and AoD of cluster n and path m in the communication channel at the communication receiver and communication transmitter, respectively.

[0181] and Denote the communication receiver antenna q and the communication transmitter antenna p at θ and Directional radiation pattern.

[0182] Indicates the combination of four polarization directions Random initial phase of cluster n and diameter m in the communication channel.

[0183] k c,n,m It represents the cross-polarization ratio of cluster n and diameter m in the communication channel.

[0184] and They represent the unit sphere coordinate vectors of cluster n diameter m at the communication receiver and communication transmitter respectively.

[0185] and respectively represent the position vector of the communication receiver and the communication transmitter.

[0186] f d,c,n,m represents the Doppler shift of the mth path of the nth cluster in the communication channel.

[0187] τ c represents the communication propagation delay.

[0188] Optionally, if the shared communication cluster parameter corresponding to the shared sensing target in the modified communication cluster parameter set comprises two communication sub-channel cluster parameters, the channel coefficient corresponding to the shared sensing cluster of the shared sensing target contribution can be obtained by referring to the above-mentioned step of obtaining the channel coefficient corresponding to the sensing cluster of the sensing target contribution.

[0189] In step S403, the path loss and the shadow fading in the large-scale parameter are coupled to the communication channel coefficient to obtain the communication channel impulse response. Further, the final required communication channel impulse response can be obtained by coupling the path loss and the shadow fading to the communication channel coefficient. Since the step of coupling the path loss and the shadow fading is widely used in the prior art, it will not be described here. In a specific embodiment, when the shared communication cluster parameter of the shared sensing target in the modified communication cluster parameter set is still represented by the form of the communication sub-channel cluster parameter, the channel coefficient corresponding to the shared communication cluster can be obtained according to the above-mentioned step of obtaining the channel coefficient corresponding to the shared sensing cluster.

[0190] In a specific embodiment, in order to enable those skilled in the art to accurately understand the process of constructing the communication channel and the sensing channel in the present application, reference is made to Figure 5 , which respectively illustrate how to construct the communication channel and the sensing channel, wherein the sensing channel modeling comprises:

[0191] C&S1. Set the scene type as InH, the O2I probability as 0.8, the number of base stations as 1 with coordinates (0, 0, 1.5) m, the number of users as 1 with coordinates (10, 0, 1.5) m, the working frequency band as 28 GHz, the bandwidth as 100 MHz, etc., and the base station and the user adopt an omnidirectional single antenna.

[0192] S2. Configure the position and speed of the sensing target, wherein the number of preset sensing targets is 12, which are distributed at an interval of 30° on an ellipsoid with a horizontal radius of 5 m and a vertical height of ±1 m from the base station, and the speed is set as 0; the integration of the communication and sensing modes is the integration of the transmitter of the communication and the single station sensing mode. It should be noted that this step can be set synchronously with the above-mentioned setting of the scene type, etc., and is configured separately here for the convenience of those skilled in the art to understand.

[0193] S3. Calculate the sensing subchannel path loss, wherein the sensing subchannel path loss comprises the subchannel path loss from the base station to the sensing target and the subchannel path loss from the sensing target to the base station based on 3GPP.

[0194] C&S4. Set the sharing parameter of the shared sensing target, for example, set the sharing ratio to 1 / 6. It should be noted that this step can be set in any step before step S5.

[0195] S5. Generate the subchannel cluster parameter according to 3GPP, and feed back the shared sensing subchannel parameter to the communication channel modeling process based on the sharing parameter.

[0196] S6. Obtain the radar scattering cross-section complex coefficient, for example, set the radar scattering cross-section complex coefficient to a constant value 1 (0 dB).

[0197] S7. Selectively generate the environment / clutter, for example, do not generate the environment / clutter.

[0198] S8. Generate the cross-polarization ratio coefficient of each multipath according to the random variable generation method of the lognormal distribution.

[0199] S9. Configure a random initial phase for each multipath.

[0200] S10. Generate the sensing cascade channel coefficient according to the formula for obtaining the sensing channel coefficient and the above-mentioned parameters, and obtain the sensing cascade path loss according to the sensing subchannel path loss and the radar scattering cross-section complex coefficient.

[0201] S11. Couple the sensing cascade path loss and the shadow fading to the sensing cascade channel coefficient to generate the sensing cascade channel impulse response.

[0202] The communication channel modeling comprises:

[0203] C&S1. Construct a channel simulation scene and configure basic parameters, for example, set the scene type to InH, the O2I probability to 0.8, the number of base stations to 1 with coordinates (0, 0, 1.5) m, the number of users to 1 with coordinates (10, 0, 1.5) m, the working frequency band to 28 GHz, the bandwidth to 100 MHz, etc., and the base station and the user adopt an omnidirectional single antenna.

[0204] C2. Configure the propagation condition, for example, set the communication channel to the LoS state according to the LoS probability.

[0205] C3. Calculate the path loss, for example, calculate the path loss of the communication channel from the base station to the user according to the parameter table of 3GPP.

[0206] C4. Generate large-scale parameters, for example: according to 3GPP, calculate 7 large-scale parameters (AS, DS, ASA, ASD, ZSA, ZSD, SF) of the communication channel, and introduce the correlation between the large-scale parameters through a 7*7 correlation matrix.

[0207] C&S4. Set a shared parameter of a shared sensing target, for example: set a shared ratio to 1 / 6. It should be noted that this step can be set in any step before step C5.

[0208] C5. Generate cluster delay, for example: according to the 3GPP formula and the generated DS, calculate the delay of different clusters;

[0209] C6. Generate cluster power, for example: according to the 3GPP exponential distribution, calculate the normalized power of the corresponding cluster;

[0210] C7. Generate cluster angle, for example: according to the corresponding statistical distribution (the horizontal angle conforms to the Laplace distribution, and the vertical angle conforms to the truncated Gaussian distribution), respectively calculate the cluster angle of arrival and the cluster angle of departure at the transceiver of the corresponding cluster. The multipath parameters can also be generated by intra-cluster sampling.

[0211] It should be noted that after generating the cluster parameters such as cluster delay, cluster power and cluster angle, the cluster parameters will also be corrected based on the received shared sensing sub-channel cluster parameters and the minimum error principle.

[0212] C8. According to the random variable generation method of the lognormal distribution, generate the cross-polarization ratio coefficient of each multipath.

[0213] C9. Configure a random initial phase for each multipath.

[0214] C10. Generate the communication channel coefficient.

[0215] C11. Couple the path loss and shadow fading to the communication channel coefficient to generate the communication channel impulse response.

[0216] Referring to Figure 6 Another embodiment of the present application also provides a control device for communication and sensing integrated channel modeling based on the extended geometric statistical principle, comprising:

[0217] The first processing module 601 is configured to construct a channel simulation scene, configure basic parameters of a communication and sensing integrated channel, and obtain large-scale parameters of channel propagation, communication path loss of a communication channel, and sensing sub-channel path loss of a sensing channel, wherein the basic parameters at least include: scene type, network layout, antenna parameter, propagation condition, and position and speed of a plurality of sensing targets.

[0218] The second processing module 602 is configured to acquire an initial communication cluster parameter set of the communication channel and an awareness sub-channel cluster parameter set corresponding to the awareness target in the awareness channel according to the basic parameter.

[0219] The third processing module 603 is configured to correct the initial communication cluster parameter set according to a shared awareness sub-channel cluster parameter corresponding to a shared awareness target in the plurality of awareness targets to obtain a corrected communication cluster parameter set including a shared communication cluster parameter and a non-shared communication cluster parameter, the shared awareness target being determined based on a preconfigured shared parameter.

[0220] The fourth processing module 604 is configured to obtain an awareness cascaded path loss and an awareness cascaded channel impulse response according to the awareness sub-channel cluster parameter set, the large-scale parameter and the awareness sub-channel path loss.

[0221] The fifth processing module 605 is configured to obtain a communication channel impulse response according to the corrected communication cluster parameter set, the large-scale parameter and the communication path loss.

[0222] Specifically, the apparatus as described above, the third processing module comprises:

[0223] The first sub-processing module is configured to acquire a shared communication cluster parameter corresponding to the shared awareness target according to an integration of the communication and awareness mode and the shared awareness sub-channel cluster parameter.

[0224] The second sub-processing module is configured to determine a preselected initial communication cluster parameter corresponding to each shared communication cluster parameter in the initial communication cluster parameter set according to an error minimization principle.

[0225] The third sub-processing module is configured to update the preselected initial communication cluster parameter in the initial communication cluster parameter set to the corresponding shared communication cluster parameter to obtain the corrected communication cluster parameter set.

[0226] Further, the apparatus as described above, the first sub-processing module comprises:

[0227] The first processing unit is configured to acquire a first communication sub-channel cluster parameter of a communication transmitter to the shared awareness target and a second communication sub-channel cluster parameter of the shared awareness target to a communication receiver according to the integration of the communication and awareness mode.

[0228] The second processing unit is configured to obtain the shared communication cluster parameter in a cascaded manner according to the first communication sub-channel cluster parameter and the second communication sub-channel cluster parameter.

[0229] Preferably, the apparatus as described above, the first processing unit comprises at least one of the following:

[0230] a first sub-processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication transmitter and the single-station perception mode, multiplex the first communication sub-channel cluster parameter in the shared perception sub-channel cluster parameter about the first perception sub-channel cluster parameter of the perception transmitter to the shared perception target, and obtain the second communication sub-channel cluster parameter of the shared perception target to the communication receiver according to the position of the communication receiver;

[0231] a second sub-processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication receiver and the single-station perception mode, multiplex the second communication sub-channel cluster parameter in the shared perception sub-channel cluster parameter about the second perception sub-channel cluster parameter of the shared perception target to the perception receiver, and obtain the first communication sub-channel cluster parameter of the communication transmitter to the shared perception target according to the position of the communication transmitter;

[0232] a third sub-processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication transmitter and the communication receiver and the double-station perception mode, multiplex the first communication sub-channel cluster parameter in the shared perception sub-channel cluster parameter about the first perception sub-channel cluster parameter of the perception transmitter to the shared perception target, and multiplex the second communication sub-channel cluster parameter in the shared perception sub-channel cluster parameter about the second perception sub-channel cluster parameter of the shared perception target to the perception receiver.

[0233] Specifically, the method as described above, the first sub-processing module comprises:

[0234] a third processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication transmitter and the single-station perception mode, multiplex the vertical departure angle and / or the horizontal departure angle in the first perception sub-channel cluster parameter of the shared perception target in the shared communication cluster parameter, and reversely generate the remaining cluster parameters in the shared communication cluster parameter according to the vertical departure angle and / or the horizontal departure angle;

[0235] or, a fourth processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication receiver and the single-station perception mode, multiplex the vertical arrival angle and / or the horizontal arrival angle in the second perception sub-channel cluster parameter of the shared perception target in the shared communication cluster parameter, and reversely generate the remaining cluster parameters in the shared communication cluster parameter according to the vertical arrival angle and / or the horizontal arrival angle;

[0236] or, a fifth processing unit, configured to, when the integration of the communication and perception modes is the integration of the communication transmitter and the communication receiver and the double-station perception mode, multiplex all the cluster parameters in the first perception sub-channel cluster parameter and the second perception sub-channel cluster parameter of the shared perception target in the shared communication cluster parameter.

[0237] Specifically, the fourth processing module of the device comprises:

[0238] A fourth sub-processing module is configured to obtain a radar scattering cross section complex coefficient corresponding to the sensing target;

[0239] A fifth sub-processing module is configured to generate a first cross-polarization ratio conforming to a lognormal distribution for each multipath in the sensing channel, and obtain a random first initial phase;

[0240] A sixth sub-processing module is configured to perform convolution on a sensing subchannel according to the sensing subchannel cluster parameter set, the first cross-polarization ratio, the first initial phase, and the radar scattering cross section complex coefficient, to obtain a sensing concatenated channel coefficient;

[0241] A seventh sub-processing module is configured to obtain the sensing concatenated path loss according to the sensing subchannel path loss and the radar scattering cross section complex coefficient;

[0242] An eighth sub-processing module is configured to couple the concatenated path loss and shadow fading in the large-scale parameter to the sensing concatenated channel coefficient, to obtain a sensing concatenated channel impulse response.

[0243] Specifically, the fifth processing module of the device comprises:

[0244] A ninth sub-processing module is configured to generate a second cross-polarization ratio conforming to a lognormal distribution for each multipath in the communication channel, and obtain a random second initial phase;

[0245] A tenth sub-processing module is configured to obtain a communication channel coefficient according to the modified communication cluster parameter set, the second cross-polarization ratio, and the second initial phase;

[0246] An eleventh sub-processing module is configured to couple the communication path loss and shadow fading in the large-scale parameter to the communication channel coefficient, to obtain a communication channel impulse response.

[0247] Specifically, the first processing module of the device comprises:

[0248] A twelfth sub-processing module is configured to obtain two three-dimensional distances between a sensing transmitter and a sensing receiver and the same sensing target, respectively;

[0249] A thirteenth sub-processing module is configured to obtain two sensing subchannel path losses between the sensing transmitter and the sensing receiver and the same sensing target according to the three-dimensional distances and a preset path loss generation algorithm.

[0250] The device embodiment of the present application is corresponding to the above-mentioned method embodiment, all the implementation means in the method embodiment are applicable to the device embodiment, and the same technical effects can also be achieved. The above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and the same technical effects can be achieved. Here, the same parts and beneficial effects in the method embodiment will not be described in detail.

[0251] Still another embodiment of the present application further provides an electronic device, including a processor, a memory, and a computer program stored in the memory and executable on the processor, when the computer program is executed by the processor, the steps of the communication-aware integrated channel modeling method based on the geometric statistical principle extension are realized, and the same technical effects can be achieved. To avoid repetition, this will not be described here.

[0252] Still another embodiment of the present application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, when the computer program is executed by a processor, the steps of the communication-aware integrated channel modeling method based on the geometric statistical principle extension are realized, and the same technical effects can be achieved. To avoid repetition, this will not be described here.

[0253] Another embodiment of the present application further provides a computer program product, including computer instructions, when the computer instructions are executed by a processor, the steps of the communication-aware integrated channel modeling method based on the geometric statistical principle extension are realized, and the same technical effects can be achieved. To avoid repetition, this will not be described here.

[0254] In addition, the reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0255] It should also be noted that, in this document, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion.

[0256] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A method for modeling a communication and sensing integrated channel based on an extended geometric statistics principle, characterized in that, The method comprises the steps of: constructing a channel simulation scene, configuring basic parameters of a communication and perception integrated channel, and obtaining large-scale parameters of channel propagation, communication path loss of a communication channel, and perception subchannel path loss of a perception channel, wherein the basic parameters at least include: scene type, network layout, antenna parameters, propagation conditions, and positions and speeds of multiple perception targets; obtaining an initial communication cluster parameter set of the communication channel and a perception subchannel cluster parameter set corresponding to the perception targets in the perception channel according to the basic parameters; modifying the initial communication cluster parameter set according to shared perception subchannel cluster parameters corresponding to shared perception targets in the multiple perception targets to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, wherein the shared perception targets are determined based on pre-configured shared parameters; obtaining perception cascade path loss and perception cascade channel impulse response according to the perception subchannel cluster parameter set, the large-scale parameters, and the perception subchannel path loss; obtaining communication channel impulse response according to the modified communication cluster parameter set, the large-scale parameters, and the communication path loss.

2. The method of claim 1, wherein, The step of modifying the initial communication cluster parameter set according to shared perception subchannel cluster parameters corresponding to shared perception targets in the multiple perception targets to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters comprises the steps of: obtaining shared communication cluster parameters corresponding to the shared perception targets according to integration of communication and perception modes and the shared perception subchannel cluster parameters; determining preselected initial communication cluster parameters corresponding to the shared communication cluster parameters in the initial communication cluster parameter set according to an error minimum principle; updating the preselected initial communication cluster parameters in the initial communication cluster parameter set to the corresponding shared communication cluster parameters to obtain the modified communication cluster parameter set.

3. The method of claim 2, wherein, The step of obtaining shared communication cluster parameters corresponding to the shared perception targets according to integration of communication and perception modes and the shared perception subchannel cluster parameters comprises the steps of: obtaining first communication subchannel cluster parameters from a communication transmitter to the shared perception targets and second communication subchannel cluster parameters from the shared perception targets to a communication receiver according to the integration of the communication and perception modes; obtaining the shared communication cluster parameters according to the first communication subchannel cluster parameters and the second communication subchannel cluster parameters in a cascaded manner.

4. The method of claim 3, wherein, The step of obtaining first communication subchannel cluster parameters from a communication transmitter to the shared perception targets and second communication subchannel cluster parameters from the shared perception targets to a communication receiver according to integration of communication and perception modes comprises at least one of the following steps: when the integration of the communication and perception modes is a communication transmitter and single-station perception mode integration, the first communication subchannel cluster parameters reuse first perception subchannel cluster parameters about perception transmitters to the shared perception targets in the shared perception subchannel cluster parameters, and the second communication subchannel cluster parameters from the shared perception targets to the communication receiver are obtained according to a position of a communication receiver; When the integration of the communication and sensing modes is the integration of the communication transmitter and the single-sensing mode, the second communication sub-channel cluster parameter multiplexes the second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter, and acquires the first communication sub-channel cluster parameter of the communication transmitter to the shared sensing target according to the location of the communication transmitter; When the integration of the communication and sensing modes is the integration of the communication transmitter and the single-sensing mode, the second communication sub-channel cluster parameter multiplexes the second sensing sub-channel cluster parameter about the shared sensing target to the sensing receiver in the shared sensing sub-channel cluster parameter, and acquires the first communication sub-channel cluster parameter of the communication transmitter to the shared sensing target according to the location of the communication transmitter; 5. The method of claim 2, wherein, The acquisition of the shared communication cluster parameter corresponding to the shared sensing target according to the integration of the communication and sensing modes and the shared sensing sub-channel cluster parameter comprises: When the integration of the communication and sensing modes is the integration of the communication transmitter and the single-sensing mode, the shared communication cluster parameter multiplexes the vertical departure angle and / or the horizontal departure angle in the first sensing sub-channel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical departure angle and / or the horizontal departure angle; Or, when the integration of the communication and sensing modes is the integration of the communication receiver and the single-sensing mode, the shared communication cluster parameter multiplexes the vertical arrival angle and / or the horizontal arrival angle in the second sensing sub-channel cluster parameter of the shared sensing target, and reversely generates the remaining cluster parameters in the shared communication cluster parameter according to the vertical arrival angle and / or the horizontal arrival angle; Or, when the integration of the communication and sensing modes is the integration of the communication transmitter and the communication receiver and the double-sensing mode, the shared communication cluster parameter multiplexes all the cluster parameters in the first sensing sub-channel cluster parameter and the second sensing sub-channel cluster parameter of the shared sensing target.

6. The method of claim 1, wherein, The acquisition of the sensing concatenated path loss and the sensing concatenated channel impulse response according to the sensing sub-channel cluster parameter set, the large-scale parameter and the sensing sub-channel path loss comprises: Acquiring a radar cross section area complex coefficient corresponding to the sensing target; Generating a first cross-polarization ratio conforming to a lognormal distribution for each multipath in the sensing channel, and acquiring a random first initial phase; Convolving the sensing sub-channel according to the sensing sub-channel cluster parameter set, the first cross-polarization ratio, the first initial phase and the radar cross section area complex coefficient to obtain a sensing concatenated channel coefficient; Acquiring the sensing concatenated path loss according to the sensing sub-channel path loss and the radar cross section area complex coefficient; Coupling the sensing concatenated path loss and the shadow fading in the large-scale parameter to the sensing concatenated channel coefficient to obtain the sensing concatenated channel impulse response.

7. The method of claim 1, wherein, According to the modified communication cluster parameter set, the large-scale parameter, and the communication path loss, a communication channel impulse response is obtained, including: A second cross-polarization ratio conforming to a lognormal distribution is generated for each multipath in the communication channel, and a random second initial phase is obtained; According to the modified communication cluster parameter set, the second cross-polarization ratio, and the second initial phase, a communication channel coefficient is obtained; The path loss and shadow fading in the large-scale parameter are coupled to the communication channel coefficient to obtain the communication channel impulse response.

8. The method of claim 1, wherein, The step of obtaining the sensing subchannel path loss includes: Two three-dimensional distances between the sensing transmitter and the sensing receiver and the same sensing target are obtained respectively; According to the three-dimensional distances and a preset path loss generation algorithm, two sensing subchannel path losses between the sensing transmitter and the sensing receiver and the same sensing target are obtained. 9.A control device for communication and sensing integrated channel modeling based on extension of geometric statistics principles, characterized in that, It includes: The first processing module is configured to construct a channel simulation scene, configure basic parameters of a communication-sensing integrated channel, and obtain large-scale parameters of channel propagation, communication path loss of a communication channel, and sensing subchannel path loss of a sensing channel, wherein the basic parameters at least include: scene type, network layout, antenna parameter, propagation condition, and position and speed of multiple sensing targets; The second processing module is configured to obtain an initial communication cluster parameter set of the communication channel and a sensing subchannel cluster parameter set corresponding to the sensing target in the sensing channel according to the basic parameters; The third processing module is configured to modify the initial communication cluster parameter set according to a shared sensing subchannel cluster parameter corresponding to a shared sensing target in the multiple sensing targets to obtain a modified communication cluster parameter set including shared communication cluster parameters and non-shared communication cluster parameters, and the shared sensing target is determined based on a preconfigured shared parameter; The fourth processing module is configured to obtain a sensing cascade path loss and a sensing cascade channel impulse response according to the sensing subchannel cluster parameter set, the large-scale parameter, and the sensing subchannel path loss; The fifth processing module is configured to obtain a communication channel impulse response according to the modified communication cluster parameter set, the large-scale parameter, and the communication path loss.

10. An electronic device, comprising: The computer program is stored on the computer readable storage medium and is executed by the processor to implement the steps of the communication-sensing integrated channel modeling method based on the extended geometric statistical principle as claimed in any one of claims 1 to 8.

11. A computer readable storage medium, characterized in that, The computer program is stored on the computer readable storage medium and is executed by the processor to implement the steps of the communication-sensing integrated channel modeling method based on the extended geometric statistical principle as claimed in any one of claims 1 to 8.

12. A computer program product, characterised in that, The computer program is stored on the computer readable storage medium and is executed by the processor to implement the steps of the communication-sensing integrated channel modeling method based on the extended geometric statistical principle as claimed in any one of claims 1 to 8.

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