Signal processing method, communication node, storage medium, and program product

Abstract

The present application provides a signal processing method, a communication node, a storage medium, and a program product. The method comprises: a first communication node receiving a reference information response message, the reference information response message comprising first reference information, and the first reference information being used for assisting the first communication node in performing interference cancellation during sensing signal processing (S110); after receiving the reference information response message, the first communication node determining the first reference information comprised in the reference information response message; and the first communication node performing interference cancellation on the basis of the first reference information during sensing signal processing, thereby improving sensing processing efficiency, reducing the influence of interference, improving sensing accuracy, and reducing sensing data reporting overhead.

Description

Signal processing method, communication node, storage medium and program product TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a signal processing method, a communication node, a storage medium and a program product. BACKGROUND

[0002] With the emergence of new services and new demands, wireless communication networks will provide more powerful communication capabilities, and will also expand more basic capabilities to support these new services and new demands. Among them, the sensing capability is one of the important potential directions. Integrating communication and sensing can bring advantages such as reducing cost, reducing power consumption, and optimizing resource utilization compared to two independent systems. In wireless sensing, wireless signals are received by a sensing receiving end after passing through a sensing target (T) and the surrounding environment (E), such as buildings, vehicles, and the like, and the background (B), such as noise, and multiple reflections and scattering between the three. The sensing receiving end needs to extract the features of the sensing target from the complex signals. In the sensing processing, the features of the sensing target are usually extracted from the complex background and environment, which requires complex processing and is low in efficiency. SUMMARY

[0003] The present application provides a signal processing method, a communication node, a storage medium and a program product to solve the problem of complex processing of the communication node extracting the sensing target, and improve the processing efficiency.

[0004] To achieve the above-mentioned purpose, the embodiments of the present application provide a signal processing method applied to a first communication node, comprising:

[0005] Receiving a reference information response message, wherein the reference information response message includes first reference information, and the first reference information is used to assist the first communication node in interference cancellation in the sensing signal processing process.

[0006] To achieve the above-mentioned purpose, the embodiments of the present application provide another signal processing method applied to a second communication node, comprising:

[0007] Sending a reference information response message, wherein the reference information response message includes reference information, and the reference information is used to assist the first communication node in interference cancellation in the sensing signal processing process.

[0008] To achieve the above-mentioned purpose, the embodiments of the present application provide another signal processing method applied to a first communication node, comprising:

[0009] Receiving a reference information storage configuration message;

[0010] store second reference information according to the reference information storage configuration message, the second reference information being used to assist the first communication node to perform interference cancellation in a sensing signal processing procedure.

[0011] To achieve the above object, embodiments of the present application provide another signal processing method, applied to a second communication node, comprising:

[0012] sending a reference information storage configuration message, the reference information storage configuration message being used to instruct a first communication node to store second reference information, the second reference information being used to assist the first communication node to perform interference cancellation in a sensing signal processing procedure.

[0013] To achieve the above object, embodiments of the present application provide a communication node, comprising a memory, a processor, a program stored in the memory and executable on the processor, and a data bus used to realize connection communication between the processor and the memory, the program being executed by the processor to realize the steps of the signal processing method according to any one of the embodiments of the present application.

[0014] To achieve the above object, embodiments of the present application provide a storage medium, used for computer readable storage, the storage medium storing one or more programs, the one or more programs being executable by one or more processors to realize the steps of the signal processing method according to any one of the embodiments of the present application.

[0015] To achieve the above object, embodiments of the present application provide a computer program product, the computer program product comprising a computer program, the computer program realizing the steps of the signal processing method according to any one of the embodiments of the present application when executed by a processor.

[0016] The signal processing method, the communication node, the storage medium and the program product provided by the embodiments of the present application, the first communication node receives a reference information response message, the reference information response message comprising first reference information, the first reference information being used to assist the first communication node to perform interference cancellation in a sensing signal processing procedure, after receiving the reference information response message, the first communication node determines the first reference information included in the reference information response message, and the first communication node performs interference cancellation according to the first reference information in the process of processing the sensing signal, thereby improving the efficiency of sensing processing, reducing the influence of interference, improving sensing accuracy, and reducing sensing data reporting overhead.

[0017] Further description is provided in the following description of drawings, specific embodiments and claims regarding the above embodiments and other aspects of the present application and implementation modes thereof. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1a is an example diagram of sensing environment information in a self-generated and self-received mode of a base station according to an embodiment;

[0019] FIG. 1b is an example diagram of sensing environment information and sensing targets in a self-generated and self-received mode of a base station according to an embodiment;

[0020] FIG. 2 is a flowchart of a signal processing method according to an embodiment;

[0021] FIG. 3 is a flowchart of another signal processing method according to an embodiment;

[0022] FIG. 4 is a flowchart of another signal processing method according to an embodiment;

[0023] FIG. 5 is a flowchart of another signal processing method according to an embodiment;

[0024] FIG. 6 is an example diagram of sending reference information according to an embodiment;

[0025] FIG. 7 is an example diagram of a first communication node using reference information according to an embodiment;

[0026] FIG. 8 is an example diagram of a second communication node configuring a first communication node to store reference information according to an embodiment;

[0027] FIG. 9 is an example diagram of sensing different beams according to an embodiment;

[0028] FIG. 10 is an example diagram of periodically storing reference information according to an embodiment;

[0029] FIG. 11 is an example diagram of sending a sensing signal according to an embodiment;

[0030] FIG. 12 is a structural diagram of a signal processing apparatus according to an embodiment;

[0031] FIG. 13 is a structural diagram of another signal processing apparatus according to an embodiment;

[0032] FIG. 14 is a structural diagram of another signal processing apparatus according to an embodiment;

[0033] FIG. 15 is a structural diagram of another signal processing apparatus according to an embodiment;

[0034] FIG. 16 is a structural diagram of a communication node according to an embodiment. DETAILED DESCRIPTION

[0035] In a wireless communication network, communication-sensing fusion is achieved by signal joint design and / or hardware sharing, etc. to realize unified design of communication and sensing functions. Among them, sensing in communication-sensing fusion can be understood as a wireless sensing technology based on a mobile communication system. The mobile communication system transmits wireless signals to the target area or object, and analyzes the received wireless signals to obtain corresponding sensing measurement data.

[0036] With the introduction of large bandwidth, millimeter wave, and large-scale MIMO (Multiple-Input Multiple-Output) technology, wireless communication networks naturally have wireless sensing capabilities. Base stations and terminals will have both communication and sensing capabilities, and can provide sensing services for sensing applications, including intelligent transportation, unmanned aerial vehicle supervision, national railway perimeter safety detection, smart home, public safety, health monitoring, environmental detection, and other fields.

[0037] In sensing, there are two basic sensing modes: mono-static sensing and bi-static sensing. According to the identity of the sensing network element (base station or user equipment UE) and the difference between the sensing sending end and the sensing receiving end, it can be further divided into: base station mono-static, inter-base station transceiver, UE transmits and base station receives, base station transmits and UE receives, UE mono-static, and inter-UE transceiver.

[0038] In a wireless communication system, the device that transmits a sensing signal is called a sensing sending end, and the device that receives a sensing signal is called a sensing receiving end. Both base stations and UEs have scenarios of being a sensing receiving end. For example, in the case of base station transmitting a sensing signal and UE receiving a sensing signal, the UE is a sensing receiving end. For another example, in the case of UE transmitting a sensing signal and base station receiving a sensing signal, the base station is a sensing receiving end.

[0039] Sensing function is a logical function that provides sensing processing and management in a wireless communication system. The specific functions include at least one of the following: sensing service flow management, sensing data aggregation, processing, and opening of sensing results to other functions. The sensing function is one of the logical functions of the core network, or the sensing function is a logical function of a non-core network, such as being deployed in a network management or being a component of a wireless access network.

[0040] In a sensing application, a sensing receiver receives a sensing signal and extracts useful information from the received signal. For example, in a vehicle-to-everything scenario, a base station transmits a sensing signal and receives a back echo of the sensing signal. The back echo of the sensing signal contains environmental information and sensing target information. The environmental information such as buildings, trees, and ground usually changes little and differs in different weather. FIG. 1a provides an example diagram of sensing environmental information in a self-transmission and self-reception mode of a base station, without sensing target information and only with sensing environmental information. FIG. 1b provides an example diagram of sensing environmental information and sensing targets in a self-transmission and self-reception mode of a base station, with both sensing environmental information and sensing targets. The sensing targets can be different types of vehicles.

[0041] FIG. 2 is a flowchart of a signal processing method provided by an embodiment. As shown in FIG. 2, the signal processing method described in the embodiments of the present application is applied to a first communication node, and the method includes S110:

[0042] S110, receiving a reference information response message, the reference information response message including first reference information, the first reference information being used to assist the first communication node in interference cancellation in a sensing signal processing process.

[0043] The reference information response message can be understood as a kind of communication signaling, and the first reference information is included in the reference information response message. The first reference information can be understood as a kind of information used for interference cancellation, which is used to assist the first communication node in interference cancellation in a sensing signal processing process, that is, the first communication node can use the first reference information for interference cancellation in a sensing signal processing process. The first reference information refers to a slowly changing feature in channel information. The interference cancellation refers to the elimination of a slowly changing feature in sensing measurement data, which can be at least one of environmental elimination or background elimination.

[0044] The first communication node receives the reference information response message, which can be sent by a second communication node. The second communication node can periodically or after satisfying a certain trigger condition send the reference information response message. The satisfying of the certain trigger condition can be a pre-set trigger condition, real-time detection of whether the data satisfies the trigger condition, or determination of the satisfying of the trigger condition after receiving a request message of the first communication node. The second communication node can send the reference information response message according to a pre-set detection threshold or an event or detection threshold negotiated with the first communication node. The pre-set or negotiated detection threshold can be at least one of a path signal strength threshold, a path Doppler shift threshold, a path phase threshold, a point intensity threshold, a point Doppler shift threshold, and a point phase threshold. Here, the path signal strength threshold is taken as an example. When the path signal strength threshold is P th , for example, the signal strength of a certain path at T1 is P1, and P1≥P thIf the phase threshold or the Doppler shift threshold is met, the second communication node needs to send the reference information response message to the first communication node.

[0045] The first reference information is included in the reference information response message, and the first communication node can determine the first reference information by analyzing the reference signal response message. The first communication node can perform interference cancellation according to the first reference information when performing sensing signal processing, eliminating environmental information, background information, and the like. Since the environment and the background change relatively slowly, the embodiment can use relatively static environmental and background information as reference information for processing of the sensing signal, which helps to eliminate the sensing interference.

[0046] The signal processing method provided by the embodiment of the application includes that the first communication node receives the reference information response message, the reference information response message includes the first reference information, the first reference information is used for assisting the first communication node to perform interference cancellation in the sensing signal processing process. After receiving the reference information response message, the first communication node determines the first reference information included in the reference information response message. The first communication node performs interference cancellation according to the first reference information in the process of processing the sensing signal, improves the efficiency of the sensing processing, reduces the influence of the interference, improves the sensing accuracy, and reduces the sensing data reporting overhead.

[0047] In some embodiments, the first reference information includes at least one of the following:

[0048] Multipath information;

[0049] Environmental information;

[0050] Point cloud information;

[0051] Timestamp;

[0052] Beam resource identifier;

[0053] Valid time.

[0054] The multipath information refers to information of paths in the environment or the background that can reflect characteristics of the environment or the background, for example, information of a plurality of paths with the largest signal energy in the environment or the background. The environmental information refers to characteristics of main buildings, trees, ground, and the like in the environment. The point cloud information refers to point cloud information of the environment or the background. The timestamp refers to a time corresponding to the reference information. The beam resource identifier refers to information for uniquely identifying a beam resource, and is used for indicating beam resource information corresponding to the reference information, that is, the reference information is information obtained based on measurement of the beam resource. The valid time refers to a valid time of the first reference information, that is, the first reference information needs to be used for interference cancellation within the valid time.

[0055] The timestamps in the first reference information correspond to the multipath information, the environment information, the point cloud information, and the beam resource identifier one by one. For example, the first reference information includes a plurality of timestamps, each of which respectively identifies the collection time of a set of multipath information, environment information, or point cloud information. Exemplarily, the timestamp t1 corresponds to the multipath information, the environment information, or the point cloud information at t1, and the timestamp t2 corresponds to the multipath information, the environment information, or the point cloud information at t2. If the same time corresponds to multiple types of information, one timestamp can be used or one timestamp can be used for each type of information. Exemplarily, the multipath information and the point cloud information are respectively carried at t1. Then, t1 can correspond to the multipath information and the point cloud information, or two t1s can be carried, one of which corresponds to the multipath information and the other of which corresponds to the point cloud information.

[0056] In some embodiments, the first reference information further includes a reference information identifier, which is used to indicate the identifier corresponding to the reference information. The identifier is used by the perception receiver to distinguish different reference information.

[0057] In some embodiments, the reference information identifier and the timestamp are the same information.

[0058] Exemplarily, the first communication node uses the multipath information in the reference information response message to eliminate the multipath influence of the environment or the background in the perception, thereby reducing the false alarm probability.

[0059] In some embodiments, the multipath information includes the characteristics of one or more paths, and each path characteristic includes at least one of the following:

[0060] Signal strength;

[0061] Time delay;

[0062] Departure angle;

[0063] Arrival angle;

[0064] Doppler.

[0065] In some embodiments, each path characteristic can further include a phase.

[0066] In some embodiments, the environment information includes the characteristics of one or more environment objects, and each environment object characteristic includes at least one of the following:

[0067] Size of the environment object;

[0068] Position of the environment object;

[0069] Radar cross section of the environment object.

[0070] In some embodiments, the size of the environment object can be identified by a combination of length, width, and height, or by a volume size.

[0071] In some embodiments, the location of the environmental object can be identified by an absolute location (e.g., latitude and longitude) or a relative location.

[0072] In some embodiments, when identified by a relative location, the location can be further identified by a combination of a reference point location and a relative reference point location.

[0073] In some embodiments, the first communication node restores the channel according to the received environmental information using ray tracing or other environmental simulation methods to obtain the reference information.

[0074] In some embodiments, the point cloud information includes one or more features of each point, and each feature of each point includes at least one of:

[0075] Time delay;

[0076] Doppler;

[0077] Signal strength;

[0078] Distance;

[0079] Micro-Doppler feature.

[0080] In some embodiments, each feature of each point can further include a phase.

[0081] In some embodiments, before receiving the reference information response message, the method further includes:

[0082] sending a reference information request message to the second communication node, the reference information request message being used to request the first reference information.

[0083] The reference information request message is a kind of communication signaling, which is used to request the first reference information. The first communication node can generate the reference information request message before sensing, or generate the reference information request message when certain conditions are met. After the first communication node generates the reference information request message, the reference information request message is sent to the second communication node. After receiving the reference information request message, the second communication node determines that the first communication node needs reference information to assist in interference cancellation, generates a reference information response message including the first reference information and feeds back to the first communication node.

[0084] In some embodiments, the reference information request message includes at least one of:

[0085] An identifier of the sensing receiving end;

[0086] A location of the sensing receiving end;

[0087] An identifier of the sensing sending end;

[0088] a location of the sensing receiver;

[0089] a sensing resource configuration;

[0090] a number of multipath information;

[0091] a timestamp.

[0092] The location of the sensing receiver refers to the location where the sensing receiver is located. The location of the sensing transmitter refers to the location where the sensing transmitter is located. The sensing resource configuration is used to request reference information corresponding to the sensing resource configuration. The number of multipath information refers to the number of paths, for example, information indicating the strongest N paths requested.

[0093] In some embodiments, the sensing resource configuration includes at least one of the following: bandwidth, beam configuration, subcarrier spacing, time domain pattern.

[0094] In some embodiments, the reference information request message further includes a sensing area, which is used to request reference information that has an impact on the area.

[0095] In some embodiments, the method further includes:

[0096] receiving a reference information update message, the reference information update message being used to update the first reference information.

[0097] The reference information update message can be understood as a message for updating the reference information. The reference information update message can include information for updating the first reference information, such as new multipath information, new environmental information, etc. It can also be differential information, which is used to represent the difference from the previously transmitted information.

[0098] The first communication node receives the reference information update message and updates the first reference information according to the reference information update message. The first communication node can perform interference cancellation according to the updated first reference information.

[0099] In some embodiments, the reference information update message includes at least one of the following:

[0100] differential information of multipath information;

[0101] differential information of environmental information;

[0102] differential information of point cloud information;

[0103] a timestamp;

[0104] beam resource identification;

[0105] valid time;

[0106] reference information identification;

[0107] Reference information timestamp.

[0108] The difference information of the multipath information, the difference information of the environment information, the difference information of the point cloud information, and the beam resource identifier are one-to-one corresponding to the timestamp; the valid time refers to the valid time of the updated first reference information, that is, the updated first reference information is used for interference cancellation within the valid time; the reference information identifier is used for uniquely identifying the reference information, and is used for indicating the identifier of the old reference information; the reference information timestamp refers to the timestamp corresponding to the old reference information.

[0109] In some embodiments, the reference information update message carries a new reference information identifier corresponding to the updated reference information.

[0110] In some embodiments, if the new reference information identifier is not carried, the original reference information identifier is continued to be used.

[0111] Exemplarily, the second communication node sends the first reference information at time t1 to the first communication node, and the second communication node needs to send updated reference information to the first communication node at time t2. The second communication node can send complete updated reference information, or can send differential reference information to replace or update the first reference information at time t1.

[0112] The reference information identifier can be used to determine the first reference information to be updated, and then one or more of the difference information of the corresponding multipath information, the difference information of the environment information, the difference information of the point cloud information, the timestamp, and the beam resource identifier are used to update the first reference information to be updated; or the reference information timestamp is used to determine the corresponding first reference information, and one or more of the above information is used to update the first reference information to be updated.

[0113] In some embodiments, the difference information of the multipath information includes the difference information of one or more paths, and the difference information of each path includes at least one of the following:

[0114] Signal strength;

[0115] Time delay;

[0116] Angle of departure;

[0117] Angle of arrival;

[0118] Doppler.

[0119] In some embodiments, the signal strength, the time delay, the angle of departure, the angle of arrival, and the Doppler refer to the change amount. Here, the change refers to the change amount compared with the reference information to be updated.

[0120] For example, at time t1, the first reference information sent by the second communication node includes the signal strength information of three paths, whose strengths are P1, P2 and P3 respectively. At time t2, the second communication node needs to send the updated reference information, and then carries the changes of the first reference information at time t1 in the second message, such as ΔP1, ΔP2 and ΔP3. Then the first communication node calculates the new reference information, whose strengths are P1+ΔP1, P2+ΔP2 and P3+ΔP3 respectively.

[0121] In some embodiments, the differential information of the environment information includes differential information of one or more environment objects, and each differential information of the environment objects includes at least one of:

[0122] a size of the environment object;

[0123] a position of the environment object;

[0124] a radar cross section of the environment object.

[0125] In some embodiments, the differential information of the point cloud information includes differential information of one or more points, and each differential information of the points includes at least one of:

[0126] a change in time delay;

[0127] a change in Doppler;

[0128] a change in signal strength;

[0129] a change in distance;

[0130] a change in micro-Doppler feature.

[0131] In some embodiments, the differential information of each point can further include a change in phase. Here, the change refers to the change amount compared to the reference information to be updated.

[0132] For example, at time t1, the first reference information sent by the second communication node includes the information of three points, whose time delays are delay 1, delay 2 and delay 3 respectively, and whose signal strengths are P1, P2 and P3 respectively. At time t2, the second communication node needs to send the updated reference information, and then carries the changes of the first reference information at time t1 in the second message, the changes in time delay are Δdelay 1, Δdelay 2 and Δdelay 3, and the changes in signal strength are ΔP1, ΔP2 and ΔP3. Then the first communication node calculates the new reference information, whose time delay information of the three points are delay 1+Δdelay 1, delay 2+Δdelay 2 and delay 3+Δdelay 3 respectively, and whose strengths are P1+ΔP1, P2+ΔP2 and P3+ΔP3 respectively.

[0133] In some embodiments, the method further comprises:

[0134] receiving first interference cancellation indication information, the first interference cancellation indication information being used to indicate whether the first communication node performs interference cancellation.

[0135] The first interference cancellation indication information can be understood as information used to indicate whether to perform interference cancellation, for example, 1 indicates to perform interference cancellation, 0 indicates not to perform interference cancellation, or Y / N respectively indicates whether to perform interference cancellation, or true / false respectively indicates whether to perform interference cancellation, and the like.

[0136] The first communication node receives the first interference cancellation indication information, and determines whether to perform interference cancellation according to the indication of the first interference cancellation indication information, for example, the first communication node parses the first interference cancellation indication information to determine that the first interference cancellation indication information carries 1, and determines to perform interference cancellation. The first interference cancellation indication information can be received before the reference information response message, can be received after the reference information response message, or can be received at the same time as the reference information response message, and the like. The first interference cancellation indication information can be transmitted once or multiple times. The first interference cancellation indication information can be transmitted through communication signaling, for example, the first interference cancellation indication information is carried in the communication signaling.

[0137] In some embodiments, the reference information response message further comprises: first interference cancellation indication information, the first interference cancellation indication information being used to indicate whether the first communication node performs interference cancellation.

[0138] The first interference cancellation indication information can be transmitted through the reference information response message or other communication signaling.

[0139] In some embodiments, the first interference cancellation indication information comprises at least one of the following:

[0140] an indication of interference cancellation;

[0141] a sensing resource configuration;

[0142] sensing measurement data;

[0143] a timestamp.

[0144] The indication of interference cancellation is used to indicate whether to perform interference cancellation; the sensing resource configuration is used to configure interference cancellation when measuring the sensing resource to obtain sensing data. The sensing measurement data is used to indicate the data reported after sensing measurement. The sensing resource configuration, the sensing measurement data, and the timestamp correspond to one indication of interference cancellation respectively.

[0145] In some embodiments, the indication of interference cancellation comprises at least one of the following: an indication of background cancellation, an indication of environment cancellation.

[0146] In some embodiments, the method further comprises:

[0147] sending the first sensing measurement data to the second communication node;

[0148] The first sensing measurement data comprises at least one of the following:

[0149] an interference cancellation identifier;

[0150] a sensing data format;

[0151] sensing data;

[0152] sensing signal resources corresponding to the sensing data;

[0153] reference channel information.

[0154] The first sensing measurement data can be understood as data obtained after sensing measurement processing. The interference cancellation identifier indicates whether the influence of interference is cancelled in the process of obtaining the sensing data. The sensing data format is used to indicate the format of the sensing data. The sensing signal resources corresponding to the sensing data are used to indicate the data measured by the sensing data on which sensing signal resources. The reference channel information is used to indicate the reference channel information used when performing interference cancellation.

[0155] The first communication node receives the sensing signal and processes the sensing signal to obtain sensing measurement data in the measurement process, and sends the sensing measurement data as the first sensing measurement data to the second communication node.

[0156] In some embodiments, the sensing data format comprises at least one of the following:

[0157] point cloud data;

[0158] multipath data.

[0159] In some embodiments, the first communication node is a sensing receiver, and the second communication node is a sensing function.

[0160] The signal processing method provided by the embodiments of the present application, the first communication node assists in interference cancellation in the sensing signal processing process according to the received first reference information, the first reference information can include one or more of multipath information, environment information, point cloud information, beam resource identifier, timestamp and valid time, the first communication node performs background or environment interference cancellation according to the above information, improves the efficiency of sensing processing, reduces the influence of interference, improves the sensing accuracy, and reduces the sensing data reporting overhead. Moreover, the embodiments of the present application can also update the first reference information according to the differential information, and reduce the data transmission amount.

[0161] FIG. 3 is a flowchart of another signal processing method provided by an embodiment. As shown in FIG. 3, the signal processing method provided by the embodiment is applied to a second communication node, and the method comprises the following steps of S210:

[0162] S210: sending a reference information response message, wherein the reference information response message comprises first reference information, and the first reference information is used to assist the first communication node in interference cancellation in the sensing signal processing process.

[0163] The second communication node can send the reference information response message to the first communication node, and carry the first reference information in the reference information response message to assist the first communication node in interference cancellation. The second communication node can periodically or after satisfying certain conditions send the reference information response message. The second communication node can send the reference information response message according to a preset detection threshold or an event or detection threshold negotiated with the first communication node. The preset or negotiated detection threshold can be at least one of a path signal strength threshold, a path Doppler shift threshold, a path phase threshold, a point strength threshold, a point Doppler shift threshold, and a point phase threshold. Here, the path signal strength threshold is taken as an example. When the signal strength of a certain path at T1 is P1, and P1≥P th , the second communication node needs to send the reference information response message to the first communication node. Similarly, the phase threshold or the Doppler shift threshold means that the phase or the Doppler shift is not less than the threshold, and the second communication node needs to send the reference information response message to the first communication node. th

[0164] The second communication node obtains sensing data of a plurality of first communication nodes or data obtained by other means (such as a camera or a radar). The second communication node processes the data to obtain environmental information of a larger area, which can be used as the reference information of the first communication node for interference cancellation, thereby reducing the complexity of the sensing algorithm processing.

[0165] The second communication node can obtain the reference information based on the processing result of one or more sensing data, or based on the processing result of the sensing data obtained by a plurality of first communication nodes, or obtain the reference information by other means.

[0166] The signal processing method provided by the embodiment comprises the following steps: the second communication node sends a reference information response message, wherein the reference information response message comprises first reference information, and the first reference information is used to assist the first communication node in interference cancellation in the sensing signal processing process. In this way, the first communication node can perform interference cancellation according to the first reference information in the process of processing the sensing signal, thereby improving the efficiency of the sensing processing, reducing the influence of interference, improving the sensing accuracy, and reducing the sensing data reporting overhead.​

[0167] In some embodiments, the first reference information comprises at least one of:

[0168] multipath information;

[0169] environment information;

[0170] point cloud information;

[0171] timestamp;

[0172] beam resource identification;

[0173] valid time.

[0174] In some embodiments, the first reference information further comprises a reference information identification, which is used to indicate an identification corresponding to the reference information. The identification is used by the perception receiver to distinguish different reference information.

[0175] In some embodiments, the reference information identification and the timestamp are the same information.

[0176] In some embodiments, the multipath information comprises a characteristic of one or more paths, and each path characteristic comprises at least one of:

[0177] signal strength;

[0178] time delay;

[0179] angle of departure;

[0180] angle of arrival;

[0181] Doppler.

[0182] In some embodiments, each path characteristic can further comprise a phase.

[0183] In some embodiments, the environment information comprises a characteristic of one or more environment objects, and each environment object characteristic comprises at least one of:

[0184] size of the environment object;

[0185] position of the environment object;

[0186] radar cross section of the environment object.

[0187] In some embodiments, the size of the environment object can be identified by a combination of length, width, and height, or by a volume size.

[0188] In some embodiments, the position of the environment object can be identified by an absolute position (e.g., latitude and longitude) or a relative position.

[0189] In some embodiments, when identified by relative position, further, a combination of reference point position and relative reference point position can be employed for identification.

[0190] In some embodiments, the point cloud information comprises one or more point features, each point feature comprising at least one of:

[0191] time delay;

[0192] Doppler;

[0193] signal strength;

[0194] distance;

[0195] micro-Doppler feature.

[0196] In some embodiments, each point feature can further comprise a phase.

[0197] In some embodiments, before sending the reference information response message, the method further comprises:

[0198] receiving a reference information request message sent by the first communication node, the reference information request message being used for requesting the first reference information.

[0199] In some embodiments, the reference information request message comprises at least one of:

[0200] an identifier of the sensing receiver;

[0201] a position of the sensing receiver;

[0202] an identifier of the sensing transmitter;

[0203] a position of the sensing transmitter;

[0204] a sensing resource configuration;

[0205] a number of multipath information;

[0206] a timestamp.

[0207] In some embodiments, the sensing resource configuration comprises at least one of: bandwidth, beam configuration, subcarrier spacing, time domain pattern.

[0208] In some embodiments, the reference information request message further comprises a sensing area, the sensing area being used for requesting reference information having an impact on the area.

[0209] In some embodiments, the method further comprises:

[0210] sending a reference information update message, the reference information update message being used for updating the first reference information.

[0211] In some embodiments, the reference information update message comprises at least one of:

[0212] differential information of multipath information;

[0213] differential information of environment information;

[0214] differential information of point cloud information;

[0215] a timestamp;

[0216] a beam resource identifier;

[0217] a validity time;

[0218] a reference information identifier;

[0219] a reference information timestamp.

[0220] In some embodiments, in the reference information update message, a new reference information identifier is carried for the updated reference information.

[0221] In some embodiments, if no new reference information identifier is carried, the original reference information identifier is continued to be used.

[0222] In some embodiments, the differential information of multipath information comprises differential information of one or more paths, and each path differential information comprises at least one of:

[0223] a signal strength;

[0224] a time delay;

[0225] an angle of departure;

[0226] an angle of arrival;

[0227] a Doppler.

[0228] In some embodiments, the signal strength, the time delay, the angle of departure, the angle of arrival, and the Doppler refer to a change amount. Here, the change refers to a change amount compared to the reference information to be updated.

[0229] In some embodiments, the differential information of environment information comprises differential information of one or more environment objects, and each environment object differential information comprises at least one of:

[0230] a size of the environment object;

[0231] a position of the environment object;

[0232] a radar cross section of the environment object.

[0233] In some embodiments, the differential information of point cloud information comprises differential information of one or more points, and each point differential information comprises at least one of:

[0234] Time delay variation;

[0235] Doppler variation;

[0236] Signal strength changes;

[0237] Distance change;

[0238] Micro-Doppler characteristic changes.

[0239] In some embodiments, the differential information for each point may further include phase changes. Here, a change refers to the amount of change compared to the reference information to be updated.

[0240] In some embodiments, the method further includes:

[0241] Send a first interference cancellation indication message, which is used to indicate whether the first communication node should perform interference cancellation.

[0242] In some embodiments, the reference information response message further includes: first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0243] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0244] Instructions for interference cancellation;

[0245] Perceive resource allocation;

[0246] Sensing measurement data;

[0247] Timestamp.

[0248] In some embodiments, the method further includes:

[0249] Receive the first sensing measurement data;

[0250] The first sensing measurement data includes at least one of the following:

[0251] Interference cancellation indicator;

[0252] Perceive data format;

[0253] Sensing data;

[0254] The sensing signal resources corresponding to the sensing data;

[0255] Reference channel information.

[0256] In some embodiments, the perceived data format includes at least one of the following:

[0257] Point cloud data;

[0258] Multipath data.

[0259] The signal processing method provided in this application embodiment involves a second communication node sending first reference information to assist the first communication node in interference cancellation during the sensing signal processing process. The first reference information may include one or more of the following: multipath information, environmental information, point cloud information, beam resource identifier, timestamp, and valid time. The first communication node cancels background or environmental interference based on the above information, improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing sensing data reporting overhead. Furthermore, this application embodiment can also update the first reference information based on differential information, reducing data transmission volume.

[0260] Figure 4 is a flowchart of another signal processing method provided in an embodiment. As shown in Figure 4, the signal processing method described in this embodiment is applied to a first communication node, and the method includes S310:

[0261] S310, Receive reference information storage configuration message.

[0262] The reference information storage configuration message is a type of communication signaling used to instruct communication nodes to store reference information, which is used for interference cancellation.

[0263] The first communication node receives a reference information storage configuration message sent by the second communication node. The second communication node may send the reference information storage configuration message after certain trigger conditions are met, or it may send the reference information storage configuration message periodically. The trigger conditions may be pre-set, with real-time detection of whether the data meets the trigger conditions, or determined to meet the trigger conditions after receiving a corresponding message from the first communication node.

[0264] In some embodiments, the second communication node can trigger the transmission of a reference information storage configuration message based on a preset detection threshold, or an event or detection threshold negotiated with the first communication node. The preset or negotiated detection threshold can be at least one of the following: perceived data quality, signal strength threshold of the corresponding environmental or background path, Doppler frequency shift threshold of the corresponding environmental or background path, phase threshold of the corresponding environmental or background path, intensity threshold of the corresponding environmental or background point, Doppler frequency shift threshold of the corresponding environmental or background point, phase threshold of the corresponding environmental or background point, number of corresponding environmental or background paths, and proportion of corresponding environmental or background paths. Here, the signal strength threshold of the corresponding environmental or background path is used as an example. When the signal strength threshold of the corresponding environmental or background path is P... th For example, at time T1, the signal strength of a certain path is P1, and P1 ≥ P. thIf the phase or Doppler frequency shift threshold is not less than the threshold, then the second communication node needs to send a reference information storage configuration message to the first communication node.

[0265] S320. Store the second reference information according to the reference information storage configuration message. The second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing.

[0266] The second reference information can be understood as information used for interference cancellation, assisting the first communication node in performing interference cancellation during the processing of the sensed signal. In other words, the first communication node can use the second reference information to cancel interference during the processing of the sensed signal. Interference cancellation can be at least one of environmental cancellation or background cancellation.

[0267] The first communication node determines the information to be stored based on the configuration of the reference information storage configuration message, obtains the corresponding second reference information, and stores it. When processing sensing signals, the first communication node can perform interference cancellation based on the second reference information, eliminating environmental and background information. Since environmental and background changes are relatively slow, this embodiment can utilize relatively static environmental and background information as reference information for sensing signal processing, which helps to eliminate sensing interference.

[0268] The signal processing method provided in this application embodiment involves a first communication node receiving a reference information storage configuration message and storing second reference information according to the configuration of the reference information storage configuration message. The second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing process. After storing the second reference information, the first communication node can cancel interference according to the second reference information during the sensing signal processing process, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0269] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0270] Sensing and measuring resources;

[0271] Timestamp;

[0272] Channel information storage indication;

[0273] Storage cycle;

[0274] Reference information storage method.

[0275] Among them, the sensing measurement resource is used to indicate storing the second reference information based on the measurement of the sensing measurement resource. The timestamp is used to indicate that the second reference information is obtained and stored by measurement at the moment indicated by the timestamp. The number of timestamps can be one or more. The timestamp can appear alone or jointly indicate with the sensing measurement resource, channel information storage indication, storage period, and reference information storage method.

[0276] In some embodiments, the first communication node processes the obtained sensing data based on the measurement of the sensing measurement resource, removes the features corresponding to the sensing target, so as to obtain the features corresponding to the environment or background.

[0277] Exemplarily, three timestamps, namely t1, t2, and t3, are indicated in the reference information storage configuration message. Then, after receiving this message, the first communication node stores the second reference information based on the measurements of t1, t2, and t = 3.

[0278] In some embodiments, the measurement of the first communication node based on t1 includes processing the obtained sensing data, removing the features corresponding to the sensing target, so as to obtain the features corresponding to the environment or background.

[0279] Exemplarily, <t1, sensing measurement resource 1>, <t2, sensing measurement resource 2>, <t3, sensing measurement resource 3> are indicated in the reference information storage configuration message. Here, <> is used to indicate the correspondence between the two pieces of information. Then, at the moment of t1, the first communication node stores the reference information based on the measurement of the sensing measurement resource 1; then, at the moment of t2, the first communication node stores the reference information based on the measurement of the sensing measurement resource 2; then, at the moment of t3, the first communication node stores the reference information based on the measurement of the sensing measurement resource 3.

[0280] The channel information storage indication is used to indicate the channels that need to be stored. For example, it indicates the channel information corresponding to the beam that needs to be stored, or the channel information corresponding to the time that needs to be stored. The storage period is used to indicate the period for storing the reference channel information; the reference information storage method is used to indicate the method for storing the reference information.

[0281] In some embodiments, one or more measurement windows are indicated in the reference information storage configuration message. Each measurement window indicates a time range. The indication method of the time window can be a combination of the start time and the duration, or a combination of the start time and the end time, or the reference moment and the upper offset and the lower offset, or other indication methods to support the measurement window. How

[0282] Among them, the intermediate time and the upper offset and the lower offset are used to indicate a measurement window, and its range is [reference moment - lower offset, reference moment + upper offset].

[0283] The measurement window here is used in the same way as the timestamp. The time window can appear alone or in conjunction with sensing measurement resources, channel information storage indicators, storage periods, and reference information storage methods.

[0284] In some embodiments, the first communication node obtains multiple measurement data within a measurement window, and the first communication node can reduce storage overhead by averaging or other methods.

[0285] The reference information storage configuration message carries at least one of the following information: sensing measurement resources, timestamp, channel information storage indication, storage period, and reference information storage method. The first communication node stores the second reference information according to one or more of the information carried in the reference information storage configuration message.

[0286] In some embodiments, the sensing measurement resources include at least one of the following:

[0287] Beam identification;

[0288] Beam resource configuration.

[0289] Among them, the beam identifier is used to indicate the corresponding beam. The second communication node can use the beam identifier to instruct the first communication node to use this beam for sensing. The beam resource configuration can configure the sensing resources that the first communication node needs to measure, and can also configure whether to save the corresponding reference information.

[0290] In some embodiments, the reference information storage method includes at least one of the following:

[0291] Multipath information;

[0292] Environmental information;

[0293] Point cloud information.

[0294] In some embodiments, before receiving the reference information storage configuration message, the method further includes:

[0295] Send a reference information storage capability message to the second communication node.

[0296] The reference information storage capability message can be understood as a communication signaling used to indicate whether the first communication node has the capability to store reference information.

[0297] The reference information storage capability message includes at least one of the following:

[0298] Storage space size;

[0299] Maximum time-domain signal processing capability;

[0300] Maximum frequency domain signal processing capability;

[0301] Typical size for reference information storage.

[0302] Before receiving the reference information storage configuration message, the first communication node may send a reference information storage capability message to the second communication node, indicating whether it has the capability to store reference information. After receiving the reference information storage capability message, the second communication node may send a reference information storage configuration message to the first communication node. For example, after receiving the reference information storage capability message, the second communication node determines that it has the capability to store reference information based on the reference information storage capability message, and then sends the reference information storage configuration message to the first communication node.

[0303] In some embodiments, after storing the second reference information according to the reference information storage configuration message, the method further includes:

[0304] The reference information sent by the second communication node is received using configuration messages.

[0305] The reference information utilization configuration message can be understood as a configuration message used to instruct the first communication node which reference information to use for interference cancellation. After receiving the reference information utilization configuration message sent by the second communication node, the first communication node selects the corresponding reference information for interference cancellation according to the instructions in the reference information utilization configuration message.

[0306] In some embodiments, the reference information utilizes configuration messages including at least one of the following:

[0307] Beam identification;

[0308] Timestamp;

[0309] How to use the reference information.

[0310] The reference information utilization method is used to instruct the first communication node on how to utilize the stored reference information. The first communication node can select the reference information corresponding to the corresponding beam by using the beam identifier; the first communication node can select the reference information at the corresponding time by using the timestamp; the first communication node can use the reference information to perform interference cancellation by using the reference information utilization method.

[0311] A timestamp is used to indicate the time at which reference information is stored for interference cancellation. The reference information may include one or more timestamps in the configuration message.

[0312] In some embodiments, the reference information utilizes configuration messages that include multiple timestamp information. The first communication node uses the reference information corresponding to the multiple timestamps together as input, for example, by using the average of these reference information for interference cancellation.

[0313] In some embodiments, the method further includes:

[0314] Receive second interference cancellation indication information, which is used to indicate whether the first communication node should perform interference cancellation.

[0315] The second interference cancellation indication information can be understood as a message used to indicate whether interference cancellation should be performed. For example, 1 indicates that interference cancellation should be performed, 0 indicates that interference cancellation should not be performed, or Y / N respectively indicate whether interference cancellation should be performed, or true / false respectively indicate whether interference cancellation should be performed, and so on.

[0316] The first communication node receives the second interference cancellation indication information and determines whether to perform interference cancellation based on the indication in the second interference cancellation indication information. For example, if the first communication node parses the second interference cancellation indication information and determines that it carries a 1, it determines to perform interference cancellation. The second interference cancellation indication information can be received before, after, or simultaneously with the reference information response message, etc. The second interference cancellation indication information can be sent once or multiple times. The second interference cancellation indication information can be sent through communication signaling, for example, by carrying the second interference cancellation indication information in the communication signaling.

[0317] In some embodiments, the reference information using the configuration message further includes: second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0318] In some embodiments, the second interference cancellation indication information includes at least one of the following:

[0319] Instructions for interference cancellation;

[0320] Perceive resource allocation;

[0321] Sensing measurement data;

[0322] Timestamp.

[0323] The interference cancellation indicator indicates whether interference cancellation should be performed; the sensing resource configuration configures interference cancellation to be performed when measuring the sensing resources to obtain sensing data. The sensing measurement data indicates the data reported after sensing measurements. The sensing resource configuration, sensing measurement data, and timestamp each correspond to an interference cancellation indicator.

[0324] In some embodiments, the reference information storage configuration message further includes: second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0325] That is, the second interference cancellation indication information can be sent through other communication signaling, or it can be carried through the configuration message or the configuration message stored in the reference information.

[0326] In some embodiments, the interference cancellation indication includes at least one of the following: background cancellation indication, environment cancellation indication.

[0327] In some embodiments, the method further includes:

[0328] Send the second sensing measurement data to the second communication node;

[0329] The second sensing measurement data includes at least one of the following:

[0330] Interference cancellation indicator;

[0331] Perceive data format;

[0332] Sensing data;

[0333] The sensing signal resources corresponding to the sensing data;

[0334] Reference channel information.

[0335] The second sensing measurement data can be understood as the data obtained after sensing measurement processing. The interference cancellation indicator indicates whether the influence of interference was eliminated during the acquisition of sensing data; the sensing data format indicates the format of the sensing data; the sensing signal resources corresponding to the sensing data indicate which sensing signal resources the sensing data was measured on; and the reference channel information indicates the reference channel information used in interference cancellation.

[0336] During the measurement process, after receiving the sensing signal, the first communication node processes the sensing signal to obtain sensing measurement data, and sends the sensing measurement data as the second sensing measurement data to the second communication node.

[0337] In some embodiments, the first communication node is a sensing receiver and the second communication node is a sensing function.

[0338] The signal processing method provided in this application embodiment involves a first communication node storing second reference information based on a received reference information storage configuration message. This second reference information assists in interference cancellation during the sensing signal processing process. The reference information storage configuration message may include one or more of the following: sensing measurement resources, timestamps, channel information storage indications, storage periods, and reference information storage methods. The first communication node uses this information to cancel background or environmental interference, improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing sensing data reporting overhead. Furthermore, this application embodiment can also use the configuration message to indicate how the reference information is used, further assisting the first communication node in interference cancellation.

[0339] Figure 5 is a flowchart of another signal processing method provided in an embodiment. As shown in Figure 5, the signal processing method described in this embodiment is applied to a second communication node, and the method includes S410:

[0340] S410. Send a reference information storage configuration message. The reference information storage configuration message is used to instruct the first communication node to store the second reference information. The second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing.

[0341] The second communication node sends a reference information storage configuration message to the first communication node. The second communication node can send the reference information storage configuration message after certain trigger conditions are met, or it can send it periodically. These trigger conditions can be pre-set, with real-time detection of whether the data meets the trigger conditions, or determined to be met after receiving a corresponding message from the first communication node.

[0342] In some embodiments, the second communication node can trigger the transmission of a reference information storage configuration message based on a preset detection threshold, or an event or detection threshold negotiated with the first communication node. The preset or negotiated detection threshold can be at least one of the following: perceived data quality, signal strength threshold of the corresponding environmental or background path, Doppler frequency shift threshold of the corresponding environmental or background path, phase threshold of the corresponding environmental or background path, intensity threshold of the corresponding environmental or background point, Doppler frequency shift threshold of the corresponding environmental or background point, phase threshold of the corresponding environmental or background point, number of corresponding environmental or background paths, and proportion of corresponding environmental or background paths. Here, the signal strength threshold of the corresponding environmental or background path is used as an example. When the signal strength threshold of the corresponding environmental or background path is P... th For example, at time T1, the signal strength of a certain path is P1, and P1 ≥ P. thIf the phase or Doppler frequency shift threshold is not less than the threshold, then the second communication node needs to send a reference information storage configuration message to the first communication node.

[0343] The second communication node instructs the first communication node to obtain and store the corresponding second reference information via a reference information storage configuration message. This allows the first communication node to perform interference cancellation, such as eliminating environmental and background information, when processing sensing signals. Since environmental and background changes are relatively slow, this embodiment can utilize relatively static environmental and background information as reference information for sensing signal processing, which helps to eliminate sensing interference.

[0344] The signal processing method provided in this application embodiment involves a second communication node sending a reference information storage configuration message and a first communication node storing corresponding second reference information according to the configuration instructions in the reference information storage configuration message. The second reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing. The first communication node performs interference cancellation based on the second reference information during the processing of the sensing signal, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0345] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0346] Sensing and measuring resources;

[0347] Timestamp;

[0348] Channel information storage indication;

[0349] Storage cycle;

[0350] Reference information storage method.

[0351] In some embodiments, a reference information storage configuration message indicates one or more measurement windows. Each measurement window indicates a time range. The time window can be indicated by a combination of start time and duration, a combination of start time and end time, a reference time and upper and lower offsets, or other indication methods to support the measurement window.

[0352] The intermediate time, as well as the upper and lower offsets, indicate a measurement window, the range of which is [reference time - lower offset, reference time + upper offset].

[0353] The measurement window here is used in the same way as the timestamp. The time window can appear alone or in conjunction with sensing measurement resources, channel information storage indicators, storage periods, and reference information storage methods.

[0354] In some embodiments, the first communication node obtains multiple measurement data within a measurement window, and the first communication node can reduce storage overhead by averaging or other methods.

[0355] In some embodiments, the sensing measurement resources include at least one of the following:

[0356] Beam identification;

[0357] Beam resource configuration.

[0358] In some embodiments, the reference information storage method includes at least one of the following:

[0359] Multipath information;

[0360] Environmental information;

[0361] Point cloud information.

[0362] In some embodiments, the method further includes, before sending the reference information storage configuration message:

[0363] Receive reference information storage capability message.

[0364] The reference information storage capability message includes at least one of the following:

[0365] Storage space size;

[0366] Maximum time-domain signal processing capability;

[0367] Maximum frequency domain signal processing capability;

[0368] Typical size for reference information storage.

[0369] In some embodiments, the method further includes:

[0370] Reference information is sent using configuration messages.

[0371] In some embodiments, the reference information utilizes configuration messages including at least one of the following:

[0372] Beam identification;

[0373] Timestamp;

[0374] How to use the reference information.

[0375] A timestamp is used to indicate the time at which reference information is stored for interference cancellation. The reference information may include one or more timestamps in the configuration message.

[0376] In some embodiments, the reference information utilizes configuration messages that include multiple timestamp information. The first communication node uses the reference information corresponding to the multiple timestamps together as input, for example, by using the average of these reference information for interference cancellation.

[0377] In some embodiments, the method further includes:

[0378] Send a second interference cancellation indication message, which is used to indicate whether the first communication node should perform interference cancellation.

[0379] In some embodiments, the reference information using configuration information further includes: second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0380] In some embodiments, the second interference cancellation indication message includes at least one of the following:

[0381] Instructions for interference cancellation;

[0382] Perceive resource allocation;

[0383] Sensing measurement data;

[0384] Timestamp.

[0385] In some embodiments, the method further includes:

[0386] Receive second sensing measurement data;

[0387] The second sensing measurement data includes at least one of the following:

[0388] Interference cancellation indicator;

[0389] Perceive data format;

[0390] Sensing data;

[0391] The sensing signal resources corresponding to the sensing data;

[0392] Reference channel information.

[0393] The signal processing method provided in this application embodiment involves a first communication node storing second reference information based on a received reference information storage configuration message. This second reference information assists in interference cancellation during the sensing signal processing process. The reference information storage configuration message may include one or more of the following: sensing measurement resources, timestamps, channel information storage indications, storage periods, and reference information storage methods. The first communication node uses this information to cancel background or environmental interference, improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing sensing data reporting overhead. Furthermore, this application embodiment can also use the configuration message to indicate how the reference information is used, further assisting the first communication node in interference cancellation.

[0394] The signal processing procedure is illustrated through the following examples:

[0395] Example 1

[0396] Taking the configuration of reference information of the first communication node by the second communication node as an example, the signal processing process is explained. The first communication node can be a sensing receiver, and the second communication node can be a sensing function.

[0397] The second communication node acquires sensing data from multiple first communication nodes, or data from other sources (such as cameras or radar). By processing this data, the second communication node can obtain environmental information for different, larger areas. This information can be used as reference information for the first communication nodes to reduce interference and decrease the complexity of the sensing algorithm.

[0398] The second communication node can obtain reference information based on the processing results of one or more sensing data, or based on the processing results of sensing data obtained from multiple first communication nodes, or by other means.

[0399] The second communication node sends a reference information response message to the first communication node, which carries the first reference information for perception processing.

[0400] For example, the first communication node may send a reference information request message to the second communication node, requesting the sensing function to send reference information.

[0401] Figure 6 provides an interactive example of reference information transmission. The first communication node sends a reference information request message to the second communication node, and the second communication node sends a reference information response message to the first communication node after receiving the reference information request message.

[0402] The reference information response message sent by the second communication node to the first communication node shall include at least one of the following parameters:

[0403] (1) Multipath information;

[0404] (2) Environmental information;

[0405] (3) Point cloud information;

[0406] (4) Timestamp;

[0407] (5) Beam resource identification;

[0408] (6) Valid time.

[0409] In some embodiments, multipath information refers to information about the leading paths in terms of signal energy in the environment or background, or multipath information that reflects environmental characteristics.

[0410] In some embodiments, multipath information includes features of one or more paths, and the features of each path include at least one of the following parameters;

[0411] (1) Signal strength;

[0412] (2) Delay;

[0413] (3) Leaving the angle;

[0414] (4) Angle of arrival;

[0415] (5) Doppler.

[0416] In some embodiments, environmental information refers to characteristic information of major buildings, trees, etc. in the environment.

[0417] In some embodiments, environmental information includes features of one or more environmental objects, and each environmental object's features include at least one of the following parameters:

[0418] (1) The size of environmental objects;

[0419] (2) The position of objects in the environment;

[0420] (3) RCS (Radar Cross Section) of environmental objects.

[0421] In some embodiments, point cloud information refers to the point cloud information of the environment.

[0422] In some embodiments, the point cloud information includes features of one or more points, and the features of each point include at least one of the following parameters:

[0423] (1) Time delay;

[0424] (2) Doppler;

[0425] (3) Signal strength;

[0426] (4) Distance;

[0427] (5) Micro-Doppler characteristics.

[0428] In some embodiments, a timestamp refers to the time corresponding to the reference information.

[0429] In some embodiments, the reference information response message carries multiple timestamps and reference information corresponding to each timestamp.

[0430] In some embodiments, before receiving a reference information response message from a second communication node, the first communication node sends a reference information request message to the second communication node to request information that can assist in interference cancellation. Interference cancellation includes at least one of background cancellation and environmental cancellation.

[0431] The reference information request message shall include at least one of the following parameters:

[0432] (1) Sensing the receiver ID;

[0433] (2) Sensing the location of the receiving end;

[0434] (3) Sensing the sender ID;

[0435] (4) Sensing the location of the transmitting end;

[0436] (5) Perceiving resource allocation;

[0437] (6) The amount of multipath information N;

[0438] (7) Timestamp.

[0439] Among them, the sensing receiver ID is the identifier of the sensing receiver.

[0440] The location of the sensing receiver is used to indicate the position of the sensing receiver.

[0441] The sensing sender ID is the identifier of the sensing sender.

[0442] The location of the sensing transmitter is used to indicate the position of the sensing transmitter.

[0443] The sensing resource configuration is used to indicate the time-frequency domain configuration of the resources used for sensing between the sensing transmitter and the sensing receiver.

[0444] In some embodiments, the sensing resource configuration includes at least one of bandwidth, beam configuration, subcarrier spacing, and time-domain pattern.

[0445] The number of multipath information N is used to indicate the information of the N strongest paths requested.

[0446] After receiving the reference information response message sent by the second communication node, the first communication node uses the first reference information to reduce the impact of the environment and background on perception.

[0447] For example, the first communication node uses multipath information in the reference information response message to eliminate the multipath effects of the environment or background in the perception, thereby reducing the probability of false alarms.

[0448] In some embodiments, the first communication node uses first reference information for interference cancellation. Figure 7 provides a schematic diagram of the first communication node using reference information. The first communication node stores the first reference information at time T0. When performing perceived interference cancellation at time T1, it can use the first reference information stored at time T0 and the information perceived at time T1 to perform a difference, thereby eliminating interference from the environment and background. The unit of time t can be ms, s, etc., and this embodiment does not limit it.

[0449] In some embodiments, the first communication node stores first reference information at multiple times, and the first reference information may be the original channel information.

[0450] When environmental or background information changes, such as weather changes or building alterations (e.g., billboard removal), the second communication node needs to update the environmental or background information. To reduce the amount of reference information sent, the reference information update message sent by the second communication node to the first communication node must include at least one of the following parameters:

[0451] (1) Differential information of multipath information;

[0452] (2) Differential information of environmental information;

[0453] (3) Differential information of point cloud information;

[0454] (4) Timestamp;

[0455] (5) Beam resource identification;

[0456] (6) Valid time;

[0457] (7) Reference information identifier;

[0458] (8) Reference information timestamp.

[0459] The differential information of multipath information refers to the change of multipath information compared to the reference information.

[0460] In some embodiments, the differential information of multipath information includes differential information of one or more paths, and the differential information of each path includes at least one of the following parameters;

[0461] (1) Signal strength;

[0462] (2) Delay;

[0463] (3) Leaving the angle;

[0464] (4) Angle of arrival;

[0465] (5) Doppler.

[0466] In some embodiments, when the change in the path is less than a preset threshold, the path information is not updated. The preset threshold may be one or a combination of a signal strength change threshold, a delay change threshold, a departure angle change threshold, an arrival angle change threshold, and a Doppler change threshold.

[0467] In some embodiments, differential information of environmental information refers to the changes in the characteristics of buildings, trees, etc. in the environment compared to reference information.

[0468] In some embodiments, the differential information of the environment includes differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following parameters:

[0469] (1) The size of environmental objects;

[0470] (2) The position of objects in the environment;

[0471] (3) RCS (Radar Cross Section) of environmental objects.

[0472] In some embodiments, the differential information of point cloud information refers to the change in the point cloud information of the environment compared to the reference information.

[0473] In some embodiments, the differential information of the point cloud includes differential information of one or more points, and the differential information of each point includes at least one of the following parameters:

[0474] (1) Time delay variation;

[0475] (2) Doppler variation;

[0476] (3) Signal strength change;

[0477] (4) Distance changes;

[0478] (5) Micro-Doppler characteristic changes.

[0479] Example 2

[0480] The signal processing procedure is illustrated using the example of configuring the first communication node to store reference information in the second communication node. The first communication node can be a sensing receiver, and the second communication node can be a sensing function. In a wireless communication system, the sensing receiver can be a base station or a UE. The base station can exist in the form of a Transmission and Reception Point (TRP), a Roadside Unit (RSU), or others. The UE can exist in the form of a terminal, vehicle-mounted equipment, etc.

[0481] For example, in a self-transmitting and self-receiving scenario at a base station, since the base station's location is usually fixed, its surrounding environment typically changes relatively little. The second communication node sends a reference information storage configuration message to the first communication node, carrying configuration parameters for the first communication node to store reference information.

[0482] After receiving the reference information storage configuration message sent by the second communication node, the first communication node stores the reference information according to the configuration in the reference information storage configuration message, and obtains the second reference information.

[0483] In subsequent sensing processes, the first communication node utilizes the existing second reference message to optimize sensing signal processing, reduce the impact of environmental and background multipath on sensing processing, and improve sensing performance.

[0484] In some embodiments, before receiving the reference information storage configuration message sent by the second communication node, the first communication node sends a reference information storage capability message to the second communication node, carrying the first communication node's ability to store reference information in the reference information storage capability message.

[0485] In some embodiments, after the first communication node stores the second reference information, the second communication node sends a reference information utilization configuration message to the first communication node, which carries in the reference information which the first communication node uses for perception processing.

[0486] For example, Figure 8 provides an implementation example diagram of configuring a second communication node to store reference information in a first communication node.

[0487] The reference information storage configuration message sent from the second communication node to the first communication node shall include at least one of the following parameters:

[0488] (1) Sensing and measuring resources;

[0489] (2) Timestamp;

[0490] (3) Channel information storage indication;

[0491] (4) Storage cycle;

[0492] (5) Reference information storage method.

[0493] The configuration of sensing resources includes the sensing resources to be measured and the corresponding reference information. The sensing measurement resources must include at least one of the following parameters:

[0494] (1) Beam marking;

[0495] (2) Beam resource allocation.

[0496] Figure 9 provides an example diagram of different beam sensing methods. Taking the first communication node as a base station as an example, the base station acts as both the sensing transmitter and receiver, transmitting five sensing beams and utilizing these five beams for sensing. The second communication node configures the sensing resources that the base station needs to measure (the time-frequency spatial domain sensing resources corresponding to the five beams), and whether the five beams need to store corresponding reference information.

[0497] For example, the second communication node notifies the base station that it needs to save the channel information of beams #2, #3 and #4.

[0498] There are two scenarios for channel information storage indication:

[0499] 1) Display Indicator. An indicator is used to indicate whether the corresponding channel information needs to be saved for each beam / time. In some embodiments, an indicator of 1 indicates that the corresponding channel information needs to be saved; an indicator of 0 indicates that the corresponding channel information does not need to be saved. For example, the channel information storage configuration message carries indications for all beams / times, and the decision to save the corresponding channel information is made based on the indications.

[0500] 2) Implicit indication. The channel information storage configuration message only carries the sensing measurement resources and timestamp information that need to be saved.

[0501] The storage period is used to indicate the period for storing reference channel information.

[0502] In some embodiments, storage periods can be stored in units of time, either as symbols or slots.

[0503] For example, when the storage period is indicated as 10, the unit is a time slot. Then the first communication node stores reference information at intervals of 10 time slots.

[0504] In some embodiments, the reference information storage configuration also indicates the start time of storage.

[0505] In some embodiments, the reference information storage configuration also indicates the maximum number of reference information items to be stored. When the number of stored reference information items reaches the maximum number of stored reference information items, when the next reference information item to be stored needs to be stored, the earliest stored reference information item will be removed and replaced with the reference information item to be stored. Figure 10 provides an example diagram of periodically storing reference information, where the horizontal axis represents time, and the unit can be a time slot, etc., which is not limited in this embodiment.

[0506] Reference information storage method is used to indicate the method of storing reference information and includes at least one of the following parameters:

[0507] (1) Multipath information;

[0508] (2) Environmental characteristics;

[0509] (3) Point cloud information;

[0510] (4) Timestamp.

[0511] The second communication node sends reference information to the first communication node using a configuration message, which includes at least one of the following parameters:

[0512] (1) Beam marking;

[0513] (2) Timestamp;

[0514] (3) How to use reference information.

[0515] The first communication node eliminates interference using the corresponding reference information, based on the instructions of the second communication node.

[0516] The second communication node stores time points T1, T2, ..., T. N There are N reference information in total. The reference information sent by the second communication node to the first communication node is a configuration message. The reference information in the configuration message carries timestamp information, such as T2, which is used to instruct the first communication node to use the reference information (R2) at time T2 to eliminate multipath of the environment and background during the processing.

[0517] In some embodiments, the channel information obtained by the first communication node from the sensing signal is S. Then, the multipath of the environment and background can be eliminated by using the reference information (R2) at time T2. This can usually be done by differential S-R2.

[0518] The reference information utilization method is used to instruct the first communication node on how to utilize the stored reference information, and includes at least one of the following parameters:

[0519] (1) Positive reference information;

[0520] (2) Negative reference information;

[0521] Positive and negative reference information indicate reference information used in sensing processing. Positive reference information indicates reference information that plays a positive role in sensing signal processing, while negative reference information indicates reference information that plays a negative role in sensing signal processing.

[0522] Positive reference information includes at least one of the following parameters:

[0523] (1) Time information;

[0524] (2) Perceiving resource information;

[0525] (3) Reference information format.

[0526] Negative reference information includes at least one of the following parameters:

[0527] (1) Time information;

[0528] (2) Perceiving resource information;

[0529] (3) Reference information format.

[0530] For example, the second communication node sends the aforementioned reference information utilization configuration message to the first communication node, and the reference information utilization configuration message carries a reference information utilization method parameter. This parameter includes the following parameters:

[0531] (1) Positive reference information: T4

[0532] (2) Negative reference information: T2 and T1

[0533] The reference information corresponding to T4 stored in the first communication node is R4, the reference information corresponding to T2 is R2, and the reference information corresponding to T1 is R1. The channel information obtained by the first communication node from the sensing signal is S. Then the channel information obtained by the first communication node to eliminate the interference effect is: S+R4-R2-R1.

[0534] In some embodiments, the first communication node uses parameters to adjust the weights of each reference information in the calculation.

[0535] Example 3

[0536] The signal processing procedure is illustrated using the example of configuring the second communication node to perform interference cancellation on the first communication node. The second communication node can be a sensing function, and the first communication node can be a sensing receiver.

[0537] In wireless communication systems, devices possess varying sensing capabilities; for example, their ability to process sensed data is limited by differences in the chips they use. Furthermore, different services have different sensing requirements during the sensing process. For instance, detection, localization, and tracking services focus on the characteristics of moving targets, typically people, vehicles, drones, animals, etc. Applications like environmental reconstruction, such as real-time 3D map construction and environmental target (building, tree, etc.) reconstruction, focus on the characteristics of environmental targets. The sensing features that different sensing services focus on also differ.

[0538] The second communication node configures whether the first communication node needs to perform interference cancellation. In the message sent by the second communication node to the first communication node, it is used to indicate whether the first communication node needs to perform interference cancellation.

[0539] In some embodiments, the second communication node sends interference cancellation indication information to the first communication node, the interference cancellation indication information being used to indicate whether the first communication node should perform interference cancellation.

[0540] In some embodiments, the interference cancellation indication information is either a first interference cancellation indication information or a second interference cancellation indication information.

[0541] In some embodiments, interference cancellation indication information can be carried in a separate message or in a reference information configuration message, that is, interference cancellation indication information can be carried in the reference information configuration message.

[0542] The interference cancellation indication information includes at least one of the following parameters:

[0543] (1) Instructions for interference cancellation;

[0544] (2) Perceiving resource allocation;

[0545] (3) Sensing and measuring data;

[0546] (4) Timestamp.

[0547] The interference cancellation indicator is used to indicate whether the first communication node needs to perform environmental or background cancellation.

[0548] Sensing measurement data is used to indicate the data reported by sensing measurements. The data types of reported sensing measurements must include at least one of the following:

[0549] (1) Raw data;

[0550] (2) Point cloud data;

[0551] (3) Perception results.

[0552] Here, raw data refers to the data obtained by the first communication node after preprocessing the sensing measurement signal.

[0553] In some embodiments, preprocessing includes signal splicing from multiple antennas, spatial filtering, etc.

[0554] Point cloud data refers to a collection of points that possess characteristic information. Each point carries at least one of the following parameters:

[0555] (1) Location;

[0556] (2) Amplitude;

[0557] (3) Phase;

[0558] (4) Doppler;

[0559] (5) Speed;

[0560] (6) Angle of Arrival (AoA);

[0561] (7) Angle of departure (AoD).

[0562] In some embodiments, the message carries a set of the above information. This allows the message to carry the mapping relationship of the above parameters.

[0563] In some embodiments, each sensing resource configuration corresponds to an interference cancellation instruction.

[0564] In some embodiments, each sensing measurement type corresponds to a separate interference cancellation indication.

[0565] In some embodiments, each timestamp corresponds to an interference cancellation indication.

[0566] Example 4

[0567] The signal processing procedure is illustrated using the example of the first communication node reporting sensing measurement data. The first communication node can be a sensing receiver, and the second communication node can be a sensing function.

[0568] The first communication node receives the sensing signal and needs to process it. Figure 11 provides an example of sensing signal transmission. As shown in Figure 11, the UE acts as the sensing transmitter, the base station acts as the sensing receiver, and the sensing target can be a vehicle, pedestrian, drone, etc.

[0569] After receiving the sensing signal as the first communication node, the sensing receiver processes the signal to obtain sensing data and sends the sensing measurement data to the second communication node. The sensing measurement data must carry at least one of the following parameters:

[0570] (1) Interference cancellation marker;

[0571] (2) Perceive data format;

[0572] (3) Sensing data;

[0573] (4) Perception signal resources corresponding to perception data;

[0574] (5) Reference channel information.

[0575] In some embodiments, the sensing measurement data is first sensing measurement data or second sensing measurement data.

[0576] Interference cancellation indicator indicates whether the effects of interference have been eliminated during the acquisition of perceived data. For example, the effects of interference can be multipath from the environment and / or background.

[0577] The sensing data format is used to indicate the format of the sensing data and must include at least one of the following parameters:

[0578] (1) Point cloud data;

[0579] (2) Multipath data.

[0580] The sensing signal resources corresponding to the sensing data are used to indicate which sensing signal resources the sensing data was measured on.

[0581] Reference channel information is used to indicate the reference channel information used during interference cancellation, and carries at least one of the following parameters:

[0582] (1) Time information;

[0583] (2) Perceiving resource information;

[0584] (3) Beam information.

[0585] Figure 12 is a schematic diagram of a signal processing device provided in an embodiment. The device is applied to a first communication node. As shown in Figure 12, the device includes a reference information receiving module 510.

[0586] The reference information receiving module 510 is used to receive a reference information response message, which includes first reference information. The first reference information is used to assist the first communication node in interference cancellation during the sensing signal processing.

[0587] The signal processing apparatus provided in this application embodiment includes a first communication node receiving a reference information response message. The reference information response message includes first reference information, which is used to assist the first communication node in interference cancellation during the sensing signal processing. After receiving the reference information response message, the first communication node determines the first reference information included in the reference information response message. During the processing of the sensing signal, the first communication node performs interference cancellation based on the first reference information, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0588] In some embodiments, the first reference information includes at least one of the following:

[0589] Multipath information;

[0590] Environmental information;

[0591] Point cloud information;

[0592] Timestamp;

[0593] Beam resource identifier;

[0594] Valid time.

[0595] In some embodiments, the multipath information includes features of one or more paths, and the features of each path include at least one of the following:

[0596] Signal strength;

[0597] Delay;

[0598] Leave the corner;

[0599] Angle of arrival;

[0600] Doppler.

[0601] In some embodiments, the environmental information includes features of one or more environmental objects, and each environmental object's features include at least one of the following:

[0602] The size of environmental objects;

[0603] The position of objects in the environment;

[0604] Radar cross section of environmental objects.

[0605] In some embodiments, the point cloud information includes features of one or more points, and the features of each point include at least one of the following:

[0606] Delay;

[0607] Doppler;

[0608] Signal strength;

[0609] distance;

[0610] Micro-Doppler characteristics.

[0611] In some embodiments, the device further includes:

[0612] The reference information request sending module is used to send a reference information request message to the second communication node before receiving the reference information response message. The reference information request message is used to request the first reference information.

[0613] In some embodiments, the reference information request message includes at least one of the following:

[0614] The identifier of the sensing receiver;

[0615] Sensing the location of the receiving end;

[0616] The identifier of the sending end is detected;

[0617] Sensing the location of the transmitting end;

[0618] Perceive resource allocation;

[0619] The amount of multipath information;

[0620] Timestamp.

[0621] In some embodiments, the device further includes:

[0622] An update message receiving module is used to receive reference information update messages, which are used to update the first reference information.

[0623] In some embodiments, the reference information update message includes at least one of the following:

[0624] Differential information of multipath information;

[0625] Differential information of environmental information;

[0626] Differential information of point cloud information;

[0627] Timestamp;

[0628] Beam resource identifier;

[0629] Valid time;

[0630] Reference information identifier;

[0631] Reference information timestamp.

[0632] In some embodiments, the differential information of the multipath information includes differential information of one or more paths, and the differential information of each path includes at least one of the following:

[0633] Signal strength;

[0634] Delay;

[0635] Leave the corner;

[0636] Angle of arrival;

[0637] Doppler.

[0638] In some embodiments, the differential information of the environment information includes differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0639] The size of environmental objects;

[0640] The position of objects in the environment;

[0641] Radar cross section of environmental objects.

[0642] In some embodiments, the differential information of the point cloud information includes differential information of one or more points, and the differential information of each point includes at least one of the following:

[0643] Time delay variation;

[0644] Doppler variation;

[0645] Signal strength changes;

[0646] Distance change;

[0647] Micro-Doppler characteristic changes.

[0648] In some embodiments, the device further includes:

[0649] The first interference indication receiving module is used to receive first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0650] In some embodiments, the reference information response message further includes: first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0651] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0652] Instructions for interference cancellation;

[0653] Perceive resource allocation;

[0654] Sensing measurement data;

[0655] Timestamp.

[0656] In some embodiments, the device further includes:

[0657] The first sensing data transmission module is used to send the first sensing measurement data to the second communication node;

[0658] The first sensing measurement data includes at least one of the following:

[0659] Interference cancellation indicator;

[0660] Perceive data format;

[0661] Sensing data;

[0662] The sensing signal resources corresponding to the sensing data;

[0663] Reference channel information.

[0664] In some embodiments, the perceived data format includes at least one of the following:

[0665] Point cloud data;

[0666] Multipath data.

[0667] The signal processing device proposed in this embodiment belongs to the same inventive concept as the signal processing method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as performing the signal processing method.

[0668] Figure 13 is a schematic diagram of another signal processing device provided in one embodiment. The device is applied to a second communication node. As shown in Figure 13, the device includes a reference information transmission module 610.

[0669] The reference information sending module 610 is used to send a reference information response message, which includes first reference information. The first reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing.

[0670] The signal processing apparatus provided in this application embodiment includes a second communication node sending a reference information response message. The reference information response message includes first reference information, which is used to assist the first communication node in performing interference cancellation during the sensing signal processing process. This allows the first communication node to perform interference cancellation based on the first reference information during the sensing signal processing process, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0671] In some embodiments, the first reference information includes at least one of the following:

[0672] Multipath information;

[0673] Environmental information;

[0674] Point cloud information;

[0675] Timestamp;

[0676] Beam resource identifier;

[0677] Valid time.

[0678] In some embodiments, the multipath information includes features of one or more paths, and the features of each path include at least one of the following:

[0679] Signal strength;

[0680] Delay;

[0681] Leave the corner;

[0682] Angle of arrival;

[0683] Doppler.

[0684] In some embodiments, environmental information includes features of one or more environmental objects, each environmental object's features including at least one of the following:

[0685] The size of environmental objects;

[0686] The position of objects in the environment;

[0687] Radar cross section of environmental objects.

[0688] In some embodiments, the point cloud information includes features of one or more points, and the features of each point include at least one of the following:

[0689] Delay;

[0690] Doppler;

[0691] Signal strength;

[0692] distance;

[0693] Micro-Doppler characteristics.

[0694] In some embodiments, the device further includes:

[0695] The reference information request receiving module is used to receive reference information request messages, which are used to request first reference information.

[0696] In some embodiments, the reference information request message includes at least one of the following:

[0697] The identifier of the sensing receiver;

[0698] Sensing the location of the receiving end;

[0699] The identifier of the sending end is detected;

[0700] Sensing the location of the transmitting end;

[0701] Perceive resource allocation;

[0702] The amount of multipath information;

[0703] Timestamp.

[0704] In some embodiments, the device further includes:

[0705] The update message sending module is used to send reference information update messages, which are used to update the first reference information.

[0706] In some embodiments, the reference information update message includes at least one of the following:

[0707] Differential information of multipath information;

[0708] Differential information of environmental information;

[0709] Differential information of point cloud information;

[0710] Timestamp;

[0711] Beam resource identifier;

[0712] Valid time;

[0713] Reference information identifier;

[0714] Reference information timestamp.

[0715] In some embodiments, the differential information of multipath information includes differential information of one or more paths, and the differential information of each path includes at least one of the following:

[0716] Signal strength;

[0717] Delay;

[0718] Leave the corner;

[0719] Angle of arrival;

[0720] Doppler.

[0721] In some embodiments, the differential information of the environment includes differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0722] The size of environmental objects;

[0723] The position of objects in the environment;

[0724] Radar cross section of environmental objects.

[0725] In some embodiments, the differential information of the point cloud includes differential information of one or more points, and the differential information of each point includes at least one of the following:

[0726] Time delay variation;

[0727] Doppler variation;

[0728] Signal strength changes;

[0729] Distance change;

[0730] Micro-Doppler characteristic changes.

[0731] In some embodiments, the device further includes:

[0732] The first interference indication sending module sends a first interference cancellation indication message, which is used to indicate whether the first communication node should perform interference cancellation.

[0733] In some embodiments, the reference information response message further includes: first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0734] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0735] Instructions for interference cancellation;

[0736] Perceive resource allocation;

[0737] Sensing measurement data;

[0738] Timestamp.

[0739] In some embodiments, the device further includes:

[0740] The first sensing data receiving module is used to receive the first sensing measurement data;

[0741] The first sensing measurement data includes at least one of the following:

[0742] Interference cancellation indicator;

[0743] Perceive data format;

[0744] Sensing data;

[0745] The sensing signal resources corresponding to the sensing data;

[0746] Reference channel information.

[0747] In some embodiments, the perceived data format includes at least one of the following:

[0748] Point cloud data;

[0749] Multipath data.

[0750] The signal processing device proposed in this embodiment belongs to the same inventive concept as the signal processing method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as performing the signal processing method.

[0751] Figure 14 is a schematic diagram of another signal processing device provided in an embodiment. The device is applied to a first communication node. As shown in Figure 14, the device includes: a storage configuration message receiving module 710 and a second reference information storage module 720.

[0752] The storage configuration message receiving module 710 is used to receive reference information storage configuration messages;

[0753] The second reference information storage module 720 is used to store second reference information according to the reference information storage configuration message. The second reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing.

[0754] The signal processing apparatus provided in this application embodiment includes a first communication node receiving a reference information storage configuration message and storing second reference information according to the configuration of the reference information storage configuration message. The second reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing. After storing the second reference information, the first communication node can perform interference cancellation according to the second reference information during the processing of the sensing signal, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0755] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0756] Sensing and measuring resources;

[0757] Timestamp;

[0758] Channel information storage indication;

[0759] Storage cycle;

[0760] Reference information storage method.

[0761] In some embodiments, the sensing measurement resources include at least one of the following:

[0762] Beam identification;

[0763] Beam resource configuration.

[0764] In some embodiments, the reference information storage method includes at least one of the following:

[0765] Multipath information;

[0766] Environmental information;

[0767] Point cloud information.

[0768] In some embodiments, the device further includes:

[0769] The storage capacity message sending module is used to send a reference information storage capacity message to the second communication node before receiving the reference information storage configuration message.

[0770] In some embodiments, it also includes:

[0771] The configuration message receiving module is used to receive the reference information using the configuration message sent by the second communication node after the second reference information is stored according to the reference information storage configuration message.

[0772] In some embodiments, the reference information utilizes configuration messages including at least one of the following:

[0773] Beam identification;

[0774] Timestamp;

[0775] How to use the reference information.

[0776] In some embodiments, it also includes:

[0777] The second interference indication receiving module is used to receive second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0778] In some embodiments, the reference information using the configuration message further includes: second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0779] In some embodiments, the second interference cancellation indication information includes at least one of the following:

[0780] Instructions for interference cancellation;

[0781] Perceive resource allocation;

[0782] Sensing measurement data;

[0783] Timestamp.

[0784] In some embodiments, the device further includes:

[0785] The second sensing data transmission module is used to send second sensing measurement data to the second communication node;

[0786] The second sensing measurement data includes at least one of the following:

[0787] Interference cancellation indicator;

[0788] Perceive data format;

[0789] Sensing data;

[0790] The sensing signal resources corresponding to the sensing data;

[0791] Reference channel information.

[0792] The signal processing device proposed in this embodiment belongs to the same inventive concept as the signal processing method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as performing the signal processing method.

[0793] Figure 15 is a schematic diagram of another signal processing device provided in an embodiment. The device is applied to a second communication node. As shown in Figure 15, the device includes: a storage configuration message sending module 810.

[0794] The storage configuration message sending module 810 is used to send a reference information storage configuration message, which is used to instruct the first communication node to store second reference information. The second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing.

[0795] The signal processing apparatus provided in this application embodiment includes a second communication node sending a reference information storage configuration message and a first communication node storing corresponding second reference information according to the configuration instruction of the reference information storage configuration message. The second reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing. The first communication node performs interference cancellation according to the second reference information during the processing of the sensing signal, thereby improving the efficiency of sensing processing, reducing the impact of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0796] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0797] Sensing and measuring resources;

[0798] Timestamp;

[0799] Channel information storage indication;

[0800] Storage cycle;

[0801] Reference information storage method.

[0802] In some embodiments, the sensing measurement resources include at least one of the following:

[0803] Beam identification;

[0804] Beam resource configuration.

[0805] In some embodiments, the reference information storage method includes at least one of the following:

[0806] Multipath information;

[0807] Environmental information;

[0808] Point cloud information.

[0809] In some embodiments, the device further includes:

[0810] The storage capacity message receiving module is used to receive reference information storage capacity messages.

[0811] In some embodiments, the device further includes:

[0812] The configuration message sending module is used to send reference information using configuration messages.

[0813] In some embodiments, the reference information utilizes configuration messages including at least one of the following:

[0814] Beam identification;

[0815] Timestamp;

[0816] How to use the reference information.

[0817] In some embodiments, the device further includes:

[0818] The second interference indication sending module is used to send a second interference cancellation indication message, which is used to indicate whether the first communication node should perform interference cancellation.

[0819] In some embodiments, the reference information using the configuration message further includes: second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0820] In some embodiments, the second interference cancellation indication information includes at least one of the following:

[0821] Instructions for interference cancellation;

[0822] Perceive resource allocation;

[0823] Sensing measurement data;

[0824] Timestamp.

[0825] In some embodiments, the device further includes:

[0826] The second sensing data receiving module is used to receive second sensing measurement data;

[0827] The second sensing measurement data includes at least one of the following:

[0828] Interference cancellation indicator;

[0829] Perceive data format;

[0830] Sensing data;

[0831] The sensing signal resources corresponding to the sensing data;

[0832] Reference channel information.

[0833] The signal processing device proposed in this embodiment belongs to the same inventive concept as the signal processing method proposed in the above embodiments. Technical details not described in detail in this embodiment can be found in any of the above embodiments. Furthermore, this embodiment has the same beneficial effects as performing the signal processing method.

[0834] This application also provides a communication node. Figure 16 is a schematic diagram of the structure of a communication node provided in an embodiment. As shown in Figure 16, the communication node provided in this application includes a processor 910, a memory 920, and a computer program stored in the memory and executable on the processor. When the processor 910 executes the program, it implements the above-mentioned signal processing method.

[0835] The communication node may also include a memory 920; the processor 910 in the communication node may be one or more, with one processor 910 as an example in Figure 16; the memory 920 is used to store one or more programs; the one or more programs are executed by the one or more processors 910, causing the one or more processors 910 to implement the signal processing method as described in the embodiments of this application.

[0836] The communication node also includes: a communication device 930, an input device 940, and an output device 950.

[0837] The processor 910, memory 920, communication device 930, input device 940 and output device 950 in the communication node can be connected by a bus or other means. Figure 16 shows an example of connection via a bus.

[0838] Input device 940 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the communication node. Output device 950 may include display devices such as a display screen.

[0839] The communication device 930 may include a receiver and a transmitter. The communication device 930 is configured to perform information transmission and reception communication under the control of the processor 910.

[0840] The memory 920, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the signal processing method described in the embodiments of this application (e.g., reference information receiving module 510 in the signal processing apparatus, or reference information transmitting module 910 in the signal processing apparatus, or storage configuration message receiving module 710 and second reference information storage module 720 in the signal processing apparatus, or storage configuration message transmitting module 810 in the signal processing apparatus). The memory 920 may include a program storage area and a data storage area, wherein the program storage area may store the operating system, at least one application program required for a function, and the data storage area may store data created according to the use of the communication node, etc. In addition, the memory 920 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 920 may further include memory remotely located relative to the processor 910, and these remote memories can be connected to the communication node via a network. Examples of the above-mentioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0841] This application also provides a storage medium storing a computer program, which, when executed by a processor, implements any of the signal processing methods described in this application.

[0842] Optionally, the signal processing method is applied to a first communication node and includes: receiving a reference information response message, wherein the reference information response message includes first reference information, and the first reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing process.

[0843] Optionally, the signal processing method is applied to a second communication node and includes: sending a reference information response message, wherein the reference information response message includes first reference information, and the first reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing.

[0844] Optionally, the signal processing method is applied to a first communication node and includes: receiving a reference information storage configuration message; storing second reference information according to the reference information storage configuration message, wherein the second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing process.

[0845] Optionally, the signal processing method is applied to a second communication node and includes: sending a reference information storage configuration message, wherein the reference information storage configuration message is used to instruct a first communication node to store second reference information, and the second reference information is used to assist the first communication node in performing interference cancellation during the sensing signal processing process.

[0846] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination thereof. The computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0847] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in connection with an instruction execution system, apparatus, or device.

[0848] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, radio frequency (RF), etc., or any suitable combination thereof.

[0849] This application provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the signal processing method described in any one of the embodiments of this application.

[0850] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0851] The above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application.

[0852] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0853] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0854] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0855] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on memory. Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.). Computer-readable media may include non-transitory storage media. Data processors may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. A signal processing method applied to a first communication node, comprising: receiving a reference information response message, wherein the reference information response message comprises first reference information, and the first reference information is used to assist the first communication node to perform interference cancellation in a sensing signal processing procedure.

2. The signal processing method of claim 1, wherein, The first reference information comprises at least one of: multipath information; environment information; point cloud information; a timestamp; a beam resource identifier; a validity time.

3. The signal processing method of claim 2, wherein, The multipath information comprises characteristics of one or more paths, and each path characteristic comprises at least one of: a signal strength; a time delay; an angle of departure; an angle of arrival; a Doppler.

4. The signal processing method of claim 2, wherein, The environment information comprises characteristics of one or more environment objects, and each environment object characteristic comprises at least one of: a size of the environment object; a position of the environment object; a radar cross section of the environment object.

5. The signal processing method of claim 2, wherein, The point cloud information comprises characteristics of one or more points, and each point characteristic comprises at least one of: a time delay; a Doppler; a signal strength; a distance; a micro-Doppler feature. 6.The signal processing method of claim 1, further comprising, before the receiving the reference information response message: sending a reference information request message to a second communication node, wherein the reference information request message is used to request the first reference information.

7. The signal processing method of claim 6, wherein, The reference information request message comprises at least one of: an identifier of a sensing receiver; a position of the sensing receiver; an identifier of a sensing transmitter; a position of the sensing transmitter; a sensing resource configuration; a number of multipath information; a timestamp. 8.The signal processing method of claim 1, further comprising: receiving a reference information update message, wherein the reference information update message is used to update the first reference information.

9. The signal processing method of claim 8, wherein, The reference information update message comprises at least one of: differential information of the multipath information; differential information of the environment information; differential information of the point cloud information; a timestamp; a beam resource identifier; a validity time; a reference information identifier; a reference information timestamp.

10. The signal processing method of claim 9, wherein, The differential information of the multipath information comprises differential information of one or more paths, and each path differential information comprises at least one of: a signal strength; a time delay; an angle of departure; an angle of arrival; a Doppler.

11. The signal processing method of claim 9, wherein, The differential information of the environment information comprises differential information of one or more environment objects, and each environment object differential information comprises at least one of: a size of the environment object; a position of the environment object; a radar cross section of the environment object.

12. The signal processing method of claim 9, wherein, The differential information of the point cloud information comprises differential information of one or more points, and each point differential information comprises at least one of: a time delay change; a Doppler change; a signal strength change; a distance change; a micro-Doppler feature change. 13.The signal processing method of claim 1, further comprising: receiving first interference cancellation indication information, wherein the first interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

14. The signal processing method of claim 1, wherein, The reference information response message further comprises the first interference cancellation indication information, wherein the first interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

15. A signal processing method according to any one of claims 13 or 14, wherein, The first interference cancellation indication information comprises at least one of: an indication of interference cancellation; a sensing resource configuration; sensing measurement data; a timestamp.

16. The signal processing method of claim 1, further comprising: sending first sensing measurement data to a second communication node; the first sensing measurement data comprises at least one of: interference cancellation identification; sensing data format; sensing data; sensing signal resource corresponding to the sensing data; reference channel information.

17. The signal processing method of claim 16, wherein, the sensing data format comprises at least one of: point cloud data; multipath data.

18. A signal processing method applied to a second communication node, comprising: sending a reference information response message, wherein the reference information response message comprises first reference information, and the first reference information is used to assist a first communication node in interference cancellation in a sensing signal processing process.

19. A signal processing method applied to a first communication node, comprising: receiving a reference information storage configuration message; storing second reference information according to the reference information storage configuration message, wherein the second reference information is used to assist the first communication node in interference cancellation in a sensing signal processing process.

20. The signal processing method of claim 19, wherein, the reference information storage configuration message comprises at least one of: sensing measurement resource; timestamp; channel information storage indication; storage period; reference information storage mode.

21. The signal processing method of claim 20, wherein, the sensing measurement resource comprises at least one of: beam identification; beam resource configuration.

22. The signal processing method of claim 20, wherein, the reference information storage mode comprises at least one of: multipath information; environment information; point cloud information.

23. The signal processing method of claim 19, before receiving the reference information storage configuration message, further comprising: sending a reference information storage capability message to a second communication node.

24. The signal processing method of claim 19, after storing the second reference information according to the reference information storage configuration message, further comprising: receiving a reference information utilization configuration message sent by a second communication node.

25. The signal processing method of claim 24, wherein, the reference information utilization configuration message comprises at least one of: beam identification; timestamp; reference information utilization mode.

26. The signal processing method of claim 19, further comprising: receiving second interference cancellation indication information, wherein the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

27. The signal processing method of claim 24, wherein, the reference information utilization configuration message further comprises the second interference cancellation indication information, wherein the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

28. The signal processing method of any one of claims 26 or 27, wherein, the second interference cancellation indication information comprises at least one of: interference cancellation indication; sensing resource configuration; sensing measurement data; timestamp.

29. The signal processing method of claim 19, further comprising: sending second sensing measurement data to a second communication node; the second sensing measurement data comprises at least one of: interference cancellation identification; sensing data format; sensing data; sensing signal resource corresponding to the sensing data; reference channel information.

30. A signal processing method applied to a second communication node, comprising: sending a reference information storage configuration message, wherein the reference information storage configuration message is used to instruct a first communication node to store second reference information, and the second reference information is used to assist the first communication node in interference cancellation in a sensing signal processing process.

31. A communication node, comprising: a memory, a processor, a program stored on the memory and executable on the processor, and a data bus for enabling a connection communication between the processor and the memory, the program, when executed by the processor, implementing the steps of the signal processing method according to any one of claims 1-30.

32. A storage medium for computer-readable storage, the storage medium having stored thereon one or more programs which, when executed by one or more processors, implement the steps of the signal processing method according to any one of claims 1-30.

33. A computer program product comprising a computer program which, when executed by a processor, implements the signal processing method according to any one of claims 1-30.

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