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

Abstract

Provided are a signal processing method, a communication node, a storage medium and a program product, the method comprising: a first communication node receiving a reference information response message, the reference information response message comprising first reference information, the first reference information being used for assisting the first communication node in performing interference cancellation in a sensing signal processing process, after the first communication node receives the reference information response message, the first reference information included in the reference information response message is determined, and the first communication node performs interference elimination according to the first reference information in the process of processing the sensing signal, so that the sensing processing efficiency is improved, the influence of interference is reduced, and the sensing precision is improved. And the sensing data reporting overhead is reduced.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a signal processing method, a communication node, a storage medium, and a program product. Background Art

[0002] With the continuous emergence of new services and new requirements, while wireless communication networks provide increasingly powerful communication capabilities, they will also expand more basic capabilities to support these new services and new requirements. Among them, the sensing ability is an important potential direction. Integrating communication and sensing can bring advantages such as cost reduction, power consumption reduction, and optimized resource utilization compared to two independent systems. In wireless sensing, wireless signals are received by a sensing receiver after passing through a sensing target (Target, T), and at the same time, the wireless signals also pass through the surrounding environment (Environment, E), such as buildings, vehicles, etc., and the background (Background, B), such as noise, etc., and are received by the sensing receiver after multiple reflections and scatterings among these three categories. The sensing receiver needs to extract the features of the sensing target from the complex signals. In sensing processing, extracting the features of the sensing target from the complex background and environment usually requires complex processing and has low efficiency. Summary of the Invention

[0003] This application provides a signal processing method, a communication node, a storage medium, and a program product to solve the problem of complex processing in which a communication node extracts the features of a sensing target and improve the processing efficiency.

[0004] To achieve the above object, an embodiment of this application provides a signal processing method, which is applied to a first communication node and includes:

[0005] Receiving a reference information response message, where 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.

[0006] To achieve the above object, an embodiment of this application provides another signal processing method, which is applied to a second communication node and includes:

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

[0008] To achieve the above object, an embodiment of this application provides another signal processing method, which is applied to a first communication node and includes:

[0009] Receiving a reference information storage configuration message;

[0010] Store second reference information according to the reference information storage configuration message, where the second reference information is used to assist a first communication node in interference cancellation during sensing signal processing.

[0011] To achieve the above object, an embodiment of the present application provides another signal processing method, which is applied to a second communication node and includes:

[0012] Send a reference information storage configuration message, where 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 during sensing signal processing.

[0013] To achieve the above object, an embodiment of the present application provides a communication node, including: a memory, a processor, a program stored on the memory and executable on the processor, and a data bus for realizing connection communication between the processor and the memory. When the program is executed by the processor, the steps of the signal processing method according to any one of the embodiments of the present application are implemented.

[0014] To achieve the above object, an embodiment of the present application provides a storage medium for computer-readable storage. The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the signal processing method according to any one of the embodiments of the present application.

[0015] To achieve the above object, an embodiment of the present application provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the signal processing method according to any one of the embodiments of the present application are implemented.

[0016] In the signal processing method, communication node, storage medium, and program product provided by the embodiments of the present application, a first communication node receives a reference information response message, where 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 during 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 process of processing the sensing signal, the first communication node performs interference cancellation according to the first reference information, improving the efficiency of sensing processing, reducing the influence of interference, improving sensing accuracy, and reducing the overhead of sensing data reporting.

[0017] For the above embodiments and other aspects of the present application and their implementation manners, more descriptions are provided in the accompanying drawings, specific implementation manners, and claims. Description of the Drawings

[0018] Figure 1aAn example diagram for sensing environmental information in the self - transmitting and self - receiving mode of a base station provided for an embodiment;

[0019] Figure 1b An example diagram for sensing environmental information and sensing targets in the self - transmitting and self - receiving mode of a base station provided for an embodiment;

[0020] Figure 2 A flowchart of a signal processing method provided for an embodiment;

[0021] Figure 3 A flowchart of another signal processing method provided for an embodiment;

[0022] Figure 4 A flowchart of another signal processing provided for an embodiment;

[0023] Figure 5 A flowchart of another signal processing provided for an embodiment;

[0024] Figure 6 An interactive example diagram for sending reference information provided for an embodiment;

[0025] Figure 7 A schematic diagram of a first communication node using reference information provided for an embodiment;

[0026] Figure 8 An implementation example diagram of a second communication node configuring a first communication node to store reference information provided for an embodiment;

[0027] Figure 9 An example diagram of different beam sensing provided for an embodiment;

[0028] Figure 10 An example diagram of periodic storage of reference information provided for an embodiment;

[0029] Figure 11 An example diagram of sensing signal transmission provided for an embodiment;

[0030] Figure 12 A schematic structural diagram of a signal processing device provided for an embodiment;

[0031] Figure 13 A schematic structural diagram of another signal processing device provided for an embodiment;

[0032] Figure 14 A schematic structural diagram of another signal processing device provided for an embodiment;

[0033] Figure 15 A schematic structural diagram of another signal processing device provided for an embodiment;

[0034] Figure 16 Schematic structural diagram of a communication node provided for an embodiment. Specific implementation manners

[0035] To make the objectives, technical solutions and advantages of the present application clearer and more understandable, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0036] In a wireless communication network, communication and sensing fusion is to achieve unified design of communication and sensing functions through means such as signal joint design and / or hardware sharing. The sensing in communication and sensing fusion can be understood as a wireless sensing technology based on a mobile communication system. The mobile communication system transmits wireless signals to a target area or object, and analyzes the received wireless signals to obtain corresponding sensing measurement data.

[0037] With the introduction of technologies such as large bandwidth, millimeter wave, and massive MIMO, the wireless communication network naturally has wireless sensing capabilities. Base stations and terminals will simultaneously have communication and sensing capabilities, and can provide sensing services for sensing applications, including fields such as intelligent transportation, drone supervision, perimeter security detection of national railways, smart homes, public security, health monitoring, and environmental detection.

[0038] In sensing, there are two basic sensing modes: mono-static sensing and bi-static sensing. According to the different identities of the sensing network elements (base station or user equipment UE) and the different network elements of the sensing transmitting end and the sensing receiving end, it can be further divided into: base station mono-static, base station-to-base station transmission and reception, UE transmission and base station reception, base station transmission and UE reception, UE mono-static, UE-to-UE transmission and reception.

[0039] In a wireless communication system, the device that sends sensing signals is called the sensing transmitting end, and the device that receives sensing signals is called the sensing receiving end. There are scenarios where both the base station and the UE are sensing receiving ends. For example, in the case where the base station sends sensing signals and the UE receives sensing signals, the UE is the sensing receiving end. Another example is that in the case where the UE sends sensing signals and the base station receives sensing signals, the base station is the sensing receiving end.

[0040] The 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 traffic flow management, sensing data aggregation, processing, and opening the 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 outside the core network, such as being deployed in the network management or being a part of the radio access network.

[0041] In a sensing application, the sensing receiver receives the sensing signal and extracts useful information from the received signal. For example, in a vehicle-to-everything (V2X) scenario, the base station sends the sensing signal and receives the echo of the sensing signal. The echo of the sensing signal contains environmental information and sensing target information. Environmental information such as buildings, trees, and the ground usually changes relatively little and has differences under different weather conditions. Figure 1a An example diagram of sensing environmental information in the base station's self-transmitting and self-receiving mode is provided. Since there is no sensing target information, only sensing environmental information exists in the base station. Figure 1b An example diagram of sensing environmental information and sensing targets in the base station's self-transmitting and self-receiving mode is provided. Both sensing environmental information and sensing targets exist, where the sensing targets can be different types of vehicles.

[0042] Figure 2 A flowchart of a signal processing method provided for an embodiment is as follows Figure 2 As shown, the signal processing method described in the embodiment of the present application is applied to the first communication node, and the method includes S110:

[0043] S110. Receive a reference information response message, where 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.

[0044] Among them, the reference information response message can be understood as a communication signaling, and the reference information response message includes the first reference information; the first reference information can be understood as a kind of information for performing interference cancellation, which assists the first communication node in performing interference cancellation during the sensing signal processing, that is, the first communication node can use the first reference information to perform interference cancellation during the processing of the sensing signal. The first reference information refers to the slowly changing characteristics in the channel information. Interference cancellation means eliminating the slowly changing characteristics in the sensing measurement data, which can be at least one of environmental cancellation or background cancellation.

[0045] The first communication node receives a reference information response message, which can be sent by the second communication node. The second communication node can send the reference information response message periodically or after meeting certain triggering conditions. Here, meeting certain triggering conditions can be preset triggering conditions, real-time detection of whether the data meets the triggering conditions, or determination of meeting the triggering conditions after receiving a request message from the first communication node. The second communication node can trigger the sending of 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 frequency shift threshold, a path phase threshold, a point intensity threshold, a point Doppler frequency 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 Pth. For example, at time T1, the signal strength of a certain path is P1, and P1≥Pth, then the second communication node needs to send a reference information response message to the first communication node. Similarly, the phase threshold or Doppler frequency shift threshold means that the phase or Doppler frequency shift is not less than the threshold, then the second communication node needs to send a reference information response message to the first communication node.

[0046] The reference information response message includes first reference information. The first communication node can determine the first reference information by parsing the reference signal response message. When performing sensing signal processing, the first communication node can perform interference cancellation according to the first reference information to eliminate environmental information, background information, etc. Since the changes in the environment and background are relatively slow, in this embodiment, relatively static environmental and background information can be used as reference information for sensing signal processing, which helps to eliminate sensing interference.

[0047] In the signal processing method provided by the embodiments of the present application, the first communication node receives a reference information response message, the reference information response message includes first reference information, the first reference information is used to assist the first communication node in performing interference cancellation during 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 process of processing the sensing signal, the first communication node performs interference cancellation according to the first reference information, improves the efficiency of sensing processing, reduces the impact of interference, improves sensing accuracy, and reduces the overhead of sensing data reporting.

[0048] In some embodiments, the first reference information includes at least one of the following:

[0049] Multipath information;

[0050] Environmental information;

[0051] Point cloud information;

[0052] Timestamp;

[0053] Beam resource identifier;

[0054] Valid time

[0055] Among them, the multipath information refers to the information of the paths that can reflect the characteristics of the environment or background in the environment or background. For example, the information of several paths with the front-ranked signal energy of the paths in the environment or background; the environmental information refers to the characteristics of the main buildings, trees, ground, etc. in the environment; the point cloud information refers to the point cloud information of the environment or background; the timestamp is the moment corresponding to the reference information; the beam resource identifier is the information that uniquely identifies the beam resource, used to indicate the beam resource information corresponding to the reference information, that is, the reference information is the information measured based on the beam resource; the valid time is the valid time of the first reference information, that is, the first reference information needs to be used for interference cancellation within the valid time.

[0056] The timestamp in the first reference information corresponds one-to-one with the multipath information, environmental information, point cloud information, and beam resource identifier. For example, the first reference information includes multiple timestamps, and each timestamp respectively identifies the acquisition time of a set of multipath information, environmental information, or point cloud information. Exemplarily, the timestamp t1 corresponds to the multipath information, environmental information, or point cloud information at the moment t1, and the timestamp t2 corresponds to the multipath information, environmental information, or point cloud information at the moment t2. If multiple types of information correspond to the same moment, they can correspond to one timestamp, or each can correspond to a timestamp respectively. Exemplarily, at the moment t1, the multipath information and the point cloud information are carried respectively. Then, it can be that one moment t1 corresponds to the multipath information and the point cloud information, or two t1s can be carried, one corresponding to the multipath information and one corresponding to the point cloud information.

[0057] 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. This identifier is used by the sensing receiver to distinguish different reference information.

[0058] In some embodiments, the reference information identifier and the timestamp are the same information.

[0059] Exemplarily, the first communication node uses the multipath information in the reference information response message to eliminate the multipath influence of the environment or background in sensing and reduce the false alarm probability.

[0060] In some embodiments, the multipath information includes the characteristics of one or more paths, and the characteristics of each path include at least one of the following:

[0061] Signal strength;

[0062] Time delay;

[0063] Angle of departure;

[0064] Angle of arrival;

[0065] Doppler.

[0066] In some embodiments, the feature of each path may further include a phase.

[0067] In some embodiments, the environmental information includes the features of one or more environmental objects, and the feature of each environmental object includes at least one of the following:

[0068] The size of the environmental object;

[0069] The position of the environmental object;

[0070] The radar cross section of the environmental object.

[0071] In some embodiments, the size of the environmental object may be identified by a combination of length, width, and height, or may be identified by the volume size.

[0072] In some embodiments, the position of the environmental object may be identified by an absolute position (e.g., longitude and latitude) or by a relative position.

[0073] In some embodiments, when identified by a relative position, further, a combination of a reference point position and a relative reference point position may be used for identification.

[0074] In some embodiments, the first communication node restores the channel by using ray tracing or other environmental simulation methods according to the received environmental information to obtain reference information.

[0075] In some embodiments, the point cloud information includes the features of one or more points, and the feature of each point includes at least one of the following:

[0076] Time delay;

[0077] Doppler;

[0078] Signal strength;

[0079] Distance;

[0080] Micro-Doppler feature.

[0081] In some embodiments, the feature of each point may further include a phase.

[0082] In some embodiments, before receiving the reference information response message, the method further includes:

[0083] Sending a reference information request message to the second communication node, where the reference information request message is used to request the first reference information.

[0084] Among them, the reference information request message is a communication signaling for requesting to obtain the first reference information. The first communication node may generate the reference information request message before sensing, or generate the reference information request message when certain conditions are met. After generating the reference information request message, the first communication node sends the reference information request message 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 it back to the first communication node.

[0085] In some embodiments, the reference information request message includes at least one of the following:

[0086] The identifier of the sensing receiving end;

[0087] The location of the sensing receiving end;

[0088] The identifier of the sensing sending end;

[0089] The location of the sensing sending end;

[0090] The sensing resource configuration;

[0091] The number of multipath information;

[0092] The timestamp.

[0093] Among them, the location of the sensing receiving end refers to the location where the sensing receiving end is located; the location of the sensing sending end refers to the location where the sensing sending end is located; the sensing resource configuration is used to request the reference information corresponding to the sensing resource configuration; the number of multipath information refers to the number of paths. For example, it is used to indicate the information of the strongest N paths requested.

[0094] In some embodiments, the sensing resource configuration includes at least one of the following: bandwidth, beam configuration, subcarrier spacing, time-domain pattern.

[0095] In some embodiments, the sensing area is further included in the reference information request message, and the sensing area is used to request the reference information that has an impact on this area.

[0096] In some embodiments, the method further includes:

[0097] Receiving a reference information update message, where the reference information update message is used to update the first reference information.

[0098] Among them, the reference information update message can be understood as a message for updating the reference information. The reference information update message may include information for updating the first reference information. For example, new multipath information, new environmental information, etc., or it may be differential information, which is used to represent the difference from the previously sent information.

[0099] The first communication node receives a 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 based on the updated first reference information.

[0100] In some embodiments, the reference information update message includes at least one of the following:

[0101] Differential information of multipath information;

[0102] Differential information of environmental information;

[0103] Differential information of point cloud information;

[0104] Timestamp;

[0105] Beam resource identifier;

[0106] Valid time;

[0107] Reference information identifier;

[0108] Reference information timestamp.

[0109] Wherein, the timestamp corresponds one-to-one with the differential information of multipath information, the differential information of environmental information, the differential information of point cloud information, and the beam resource identifier; 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 to uniquely identify the reference information and is used to indicate the identifier of the old reference information; the reference information timestamp refers to the timestamp corresponding to the old reference information.

[0110] In some embodiments, in the reference information update message, a new reference information identifier is carried, which is used for the identifier corresponding to the updated reference information.

[0111] In some embodiments, if the new reference information identifier is not carried, the original reference information identifier is continued to be used.

[0112] Exemplarily, the second communication node sends the first reference information at time t1 to the first communication node. When the second communication node needs to send the updated reference information to the first communication node at time t2, the second communication node can send the complete updated reference information or the differential reference information to replace or update the first reference information at time t1.

[0113] The first reference information to be updated this time can be determined through the reference information identifier, and then the first reference information to be updated is updated according to one or more of the differential information of the multipath information, the differential information of the environmental information, the differential information of the point cloud information, the time stamp, the beam resource identifier, and the valid time; or, the corresponding first reference information is determined according to the reference information time stamp, and the first reference information to be updated is also updated according to one or more of the above information.

[0114] In some embodiments, the differential information of the multipath information includes the differential information of one or more paths, and the differential information of each path includes at least one of the following:

[0115] Signal strength;

[0116] Time delay;

[0117] Angle of departure;

[0118] Angle of arrival;

[0119] Doppler.

[0120] In some embodiments, the signal strength, time delay, angle of departure, angle of arrival, and Doppler refer to the change amount. Here, the change refers to the change amount compared to the reference information to be updated.

[0121] Exemplarily, for example, at time t1, the first reference information sent by the second communication node includes the signal strength information of three paths, and their intensities are P1, P2, and P3 respectively. At time t2, the second communication node needs to send the updated reference information, then the change relative to the first reference information at time t1 is carried in the second message, such as ΔP1, ΔP2, and ΔP3. Then the first communication node calculates and obtains the new reference information, and its intensities are P1 + ΔP1, P2 + ΔP2, and P3 + ΔP3 respectively.

[0122] In some embodiments, the differential information of the environmental information includes the differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0123] The size of the environmental object;

[0124] The position of the environmental object;

[0125] The radar cross section of the environmental object.

[0126] In some embodiments, the differential information of the point cloud information includes the differential information of one or more points, and the differential information of each point includes at least one of the following:

[0127] Time delay change;

[0128] Doppler change;

[0129] Signal strength change;

[0130] Distance change;

[0131] Micro-Doppler feature change.

[0132] In some embodiments, the differential information of each point may further include a phase change. The change here refers to the amount of change compared to the reference information to be updated.

[0133] Exemplarily, for example, at time t1, the first reference information sent by the second communication node includes information of three points. The time delays corresponding to these three points are delay 1, delay 2, and delay 3 respectively, and the signal strengths are P1, P2, and P3 respectively. At time t2, the second communication node needs to send updated reference information. Then, the change relative to the first reference information at time t1 is carried in the second message. The time delay changes are Δdelay 1, Δdelay 2, and Δdelay 3, and the signal strength changes are ΔP1, ΔP2, and ΔP3. Then, the first communication node calculates and obtains the new reference information. The time delay information of the three points is respectively delay 1 + Δdelay 1, delay 2 + Δdelay 2, and delay3 + Δdelay 3; the strengths are respectively P1 + ΔP1, P2 + ΔP2, and P3 + ΔP3.

[0134] In some embodiments, the method further includes:

[0135] Receiving first interference cancellation indication information, where the first interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

[0136] Among them, the first interference cancellation indication information can be understood as information used to indicate whether to perform interference cancellation. For example, 1 is used to indicate performing interference cancellation, 0 is used to indicate not performing interference cancellation, or Y / N is used to indicate whether to perform interference cancellation, or true / false is used to indicate whether to perform interference cancellation, and so on.

[0137] 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 and determines that the first interference cancellation indication information carries 1, and determines to perform interference cancellation. The first interference cancellation indication information may be received before the reference information response message, may be received after the reference information response message, or may be received simultaneously with the reference information response message, and so on. The first interference cancellation indication information may be sent once or may be sent multiple times. The first interference cancellation indication information may be sent through communication signaling. For example, the first interference cancellation indication information is carried in the communication signaling.

[0138] 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.

[0139] The first interference cancellation indication information may be sent through the reference information response message or through other communication signaling.

[0140] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0141] Indication of interference cancellation;

[0142] Perceived resource configuration;

[0143] Perceived measurement data;

[0144] Timestamp.

[0145] Among them, the indication of interference cancellation is used to indicate whether to perform interference cancellation; the perceived resource configuration is used to configure interference cancellation when measuring the perceived resources to obtain perceived data. The perceived measurement data is used to indicate the data reported after perceived measurement. The perceived resource configuration, the perceived measurement data, and the timestamp each correspond to an indication of interference cancellation.

[0146] In some embodiments, the indication of interference cancellation includes at least one of the following: indication of background cancellation, indication of environmental cancellation.

[0147] In some embodiments, the method further includes:

[0148] Sending first perceived measurement data to a second communication node;

[0149] The first perceived measurement data includes at least one of the following:

[0150] Interference cancellation identifier;

[0151] Perceived data format;

[0152] Perceived data;

[0153] Perceived signal resources corresponding to the perceived data;

[0154] Reference channel information.

[0155] Among them, the first perceived measurement data can be understood as the data obtained after perceived measurement processing. The interference cancellation identifier indicates whether the influence of interference is eliminated during the process of obtaining the perceived data; the perceived data format is used to indicate the format of the perceived data; the perceived signal resources corresponding to the perceived data are used to indicate the perceived signal resources for which the perceived data is measured; the reference channel information is used to indicate the reference channel information used during interference cancellation.

[0156] 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 first sensing measurement data to the second communication node.

[0157] In some embodiments, the sensing data format includes at least one of the following:

[0158] Point cloud data;

[0159] Multipath data.

[0160] In some embodiments, the first communication node is a sensing receiver, and the second communication node is a sensing function.

[0161] In the signal processing method provided by the embodiments of the present application, the first communication node assists in interference cancellation during the sensing signal processing according to the received first reference information. The first reference information may include one or more of multipath information, environmental information, point cloud information, beam resource identifier, timestamp, and valid time. The first communication node performs background or environmental interference cancellation according to the above information, improves the efficiency of sensing processing, reduces the impact of interference, improves sensing accuracy, and reduces the overhead of sensing data reporting. And the embodiments of the present application can also update the first reference information according to the differential information to reduce the data transmission volume.

[0162] Figure 3 The flowchart of another signal processing method provided for an embodiment is as Figure 3 shown. The signal processing method described in the embodiments of the present application is applied to the second communication node, and the method includes S210:

[0163] S210. Send a reference information response message, where the reference information response message includes the 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.

[0164] The second communication node may send a reference information response message to the first communication node, and carry first reference information in the reference information response message to assist the first communication node in interference cancellation. The second communication node may send the reference information response message periodically or after meeting certain conditions. The second communication node may trigger the sending of 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 may be at least one of a path signal strength threshold, a path Doppler frequency shift threshold, a path phase threshold, a point strength threshold, a point Doppler frequency 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 Pth. For example, the signal strength of a certain path at time T1 is P1, and P1≥Pth, then the second communication node needs to send a reference information response message to the first communication node. Similarly, the phase threshold or Doppler frequency shift threshold means that the phase or Doppler frequency shift is not less than the threshold, then the second communication node needs to send a reference information response message to the first communication node.

[0165] The second communication node obtains the sensing data of multiple first communication nodes, or data in other ways (such as cameras, radars). The second communication node processes these data and can obtain environmental information of different larger areas. These information can be used as reference information for the first communication node to perform interference cancellation and reduce the complexity of sensing algorithm processing.

[0166] The second communication node can obtain the reference information based on the processing results of one or more sensing data, or based on the processing results of the sensing data obtained by multiple first communication nodes, or obtain the reference information in other ways.

[0167] In the signal processing method provided by the embodiments of the present application, the second communication node sends a reference information response message, and 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 during the sensing signal processing, so that the first communication node can perform interference cancellation according to the first reference information during the process of processing the sensing signal, improve the efficiency of sensing processing, reduce the influence of interference, improve the sensing accuracy, and reduce the sensing data reporting overhead.

[0168] In some embodiments, the first reference information includes at least one of the following:

[0169] Multipath information;

[0170] Environmental information;

[0171] Point cloud information;

[0172] Timestamp;

[0173] Beam resource identifier;

[0174] Valid time.

[0175] In some embodiments, the first reference information further includes a reference information identifier for indicating the identifier corresponding to the reference information. This identifier is used by the sensing receiver to distinguish different reference information.

[0176] In some embodiments, the reference information identifier and the timestamp are the same information.

[0177] In some embodiments, the multipath information includes the characteristics of one or more paths, and the characteristics of each path include at least one of the following:

[0178] Signal strength;

[0179] Time delay;

[0180] Angle of departure;

[0181] Angle of arrival;

[0182] Doppler.

[0183] In some embodiments, the characteristics of each path may further include phase.

[0184] In some embodiments, the environmental information includes the characteristics of one or more environmental objects, and the characteristics of each environmental object include at least one of the following:

[0185] The size of the environmental object;

[0186] The position of the environmental object;

[0187] The radar cross section of the environmental object.

[0188] In some embodiments, the size of the environmental object can be identified by a combination of length, width, and height, or by the volume size.

[0189] In some embodiments, the position of the environmental object can be identified by an absolute position (e.g., longitude and latitude) or by a relative position.

[0190] In some embodiments, when identified by a relative position, further, it can be identified by a combination of a reference point position and a relative reference point position.

[0191] In some embodiments, the point cloud information includes the characteristics of one or more points, and the characteristics of each point include at least one of the following:

[0192] Time delay;

[0193] Doppler;

[0194] Signal strength;

[0195] Distance;

[0196] Micro-Doppler feature.

[0197] In some embodiments, the feature of each point may further include a phase.

[0198] In some embodiments, before sending a reference information response message, the method further includes:

[0199] Receiving a reference information request message sent by a first communication node, where the reference information request message is used to request first reference information.

[0200] In some embodiments, the reference information request message includes at least one of the following:

[0201] The identifier of the sensing receiver;

[0202] The location of the sensing receiver;

[0203] The identifier of the sensing transmitter;

[0204] The location of the sensing transmitter;

[0205] Sensing resource configuration;

[0206] The number of multipath information;

[0207] Timestamp.

[0208] In some embodiments, the sensing resource configuration includes at least one of the following: bandwidth, beam configuration, subcarrier spacing, time-domain pattern.

[0209] In some embodiments, the sensing area is further included in the reference information request message, and the sensing area is used to request reference information that has an impact on the area.

[0210] In some embodiments, the method further includes:

[0211] Sending a reference information update message, where the reference information update message is used to update the first reference information.

[0212] In some embodiments, the reference information update message includes at least one of the following:

[0213] Differential information of multipath information;

[0214] Differential information of environmental information;

[0215] Differential information of point cloud information;

[0216] Timestamp;

[0217] Beam resource identifier;

[0218] Valid time;

[0219] Reference information identifier;

[0220] Reference information timestamp.

[0221] In some embodiments, in the reference information update message, a new reference information identifier is carried, which is used for the identifier corresponding to the updated reference information.

[0222] In some embodiments, if the new reference information identifier is not carried, the original reference information identifier is continued to be used.

[0223] In some embodiments, the differential information of the multipath information includes the differential information of one or more paths, and the differential information of each path includes at least one of the following:

[0224] Signal strength;

[0225] Time delay;

[0226] Angle of departure;

[0227] Angle of arrival;

[0228] Doppler.

[0229] In some embodiments, the signal strength, time delay, angle of departure, angle of arrival, and Doppler refer to the change amount. Here, the change refers to the change amount compared to the reference information to be updated.

[0230] In some embodiments, the differential information of the environmental information includes the differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0231] Size of the environmental object;

[0232] Position of the environmental object;

[0233] Radar cross section of the environmental object.

[0234] In some embodiments, the differential information of the point cloud information includes the differential information of one or more points, and the differential information of each point includes at least one of the following:

[0235] Time delay change;

[0236] Doppler change;

[0237] Signal strength change;

[0238] Distance change;

[0239] Micro-Doppler feature change.

[0240] In some embodiments, the differential information of each point may further include a phase change. Here, the change refers to the change amount compared to the reference information to be updated.

[0241] In some embodiments, the method further includes:

[0242] Send the first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0243] In some embodiments, the reference information response message further includes: the first interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0244] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0245] Indication of interference cancellation;

[0246] Perceived resource configuration;

[0247] Perceived measurement data;

[0248] Timestamp.

[0249] In some embodiments, the method further includes:

[0250] Receive the first perceived measurement data;

[0251] The first perceived measurement data includes at least one of the following:

[0252] Interference cancellation identifier;

[0253] Perceived data format;

[0254] Perceived data;

[0255] Perceived signal resource corresponding to the perceived data;

[0256] Reference channel information.

[0257] In some embodiments, the perceived data format includes at least one of the following:

[0258] Point cloud data;

[0259] Multipath data.

[0260] In the signal processing method provided by the embodiments of the present application, the second communication node sends the first reference information to assist the first communication node in performing interference cancellation during the perceived signal processing. The first reference information may 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 environmental interference cancellation based on the above information, improves the efficiency of the perceived processing, reduces the impact of interference, improves the perceived accuracy, and reduces the overhead of reporting the perceived data. And the embodiments of the present application can also update the first reference information according to the differential information to reduce the data transmission volume.

[0261] Figure 4 A flowchart of another signal processing method provided for an embodiment, as Figure 4 shown, the signal processing method described in the embodiments of the present application is applied to a first communication node, and the method includes S310:

[0262] S310. Receive a reference information storage configuration message.

[0263] Among them, the reference information storage configuration message is a kind of communication signaling, used to instruct a communication node to store reference information, and the reference information is used for interference cancellation.

[0264] The first communication node receives the reference information storage configuration message sent by the second communication node; the second communication node can send the reference information storage configuration message after meeting certain triggering conditions, or can send the reference information storage configuration message periodically. Among them, meeting certain triggering conditions can be pre-set triggering conditions, real-time detection of whether the data meets the triggering conditions, or determination of meeting the triggering conditions after receiving the corresponding message sent by the first communication node.

[0265] In some embodiments, the second communication node can trigger the sending of the reference information storage configuration 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 the perceived data quality, the signal strength threshold of the corresponding path of the environment or background, the Doppler frequency shift threshold of the corresponding path of the environment or background, the phase threshold of the corresponding path of the environment or background, the intensity threshold of the corresponding point of the environment or background, the Doppler frequency shift threshold of the corresponding point of the environment or background, the phase threshold of the corresponding point of the environment or background, the number of corresponding paths of the environment or background, and the proportion of the corresponding paths of the environment or background. Here, the signal strength threshold of the corresponding path of the environment or background is taken as an example. When the signal strength threshold of the corresponding path of the environment or background is Pth. For example, the signal strength of a certain path at time T1 is P1, and P1≥Pth, then the second communication node needs to send a reference information storage configuration message. Similarly, the phase threshold or Doppler frequency shift threshold means that the phase or Doppler frequency shift is not less than this threshold, then the second communication node needs to send a reference information storage configuration message to the first communication node.

[0266] S320. Store the second reference information according to the reference information storage configuration message, and the second reference information is used to assist the first communication node in performing interference cancellation during the perceived signal processing.

[0267] Among them, the second reference information can be understood as a kind of information for interference cancellation, assisting the first communication node in performing interference cancellation during the perceived signal processing, that is, the first communication node can use the second reference information for interference cancellation during the processing of the perceived signal. The interference cancellation can be at least one of environment cancellation or background cancellation.

[0268] The first communication node determines the information to be stored according to the configuration of the reference information storage configuration message, obtains the corresponding second reference information and stores it. When performing sensing signal processing, the first communication node can perform interference cancellation according to the second reference information to cancel environmental information, background information, etc. Since the changes in the environment and background are relatively slow, this embodiment can use relatively static environmental and background information as reference information for sensing signal processing, which helps to cancel sensing interference.

[0269] In the signal processing method provided by the embodiment of the present application, the first communication node receives a reference information storage configuration message and stores the 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 the first communication node stores the second reference information, it can perform interference cancellation according to the second reference information during the process of processing the sensing signal, improve the efficiency of sensing processing, reduce the impact of interference, improve sensing accuracy, and reduce the overhead of sensing data reporting.

[0270] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0271] Sensing measurement resources;

[0272] Timestamp;

[0273] Channel information storage indication;

[0274] Storage period;

[0275] Reference information storage method.

[0276] Among them, the sensing measurement resources are used to indicate storing the second reference information based on the measurement of the sensing measurement resources. The timestamp is used to indicate obtaining and storing the second reference information by performing measurements 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 resources, channel information storage indication, storage period, and reference information storage method.

[0277] In some embodiments, the first communication node's measurement based on the sensing measurement resources includes processing the obtained sensing data to remove the features corresponding to the sensing target to obtain the features corresponding to the environment or background.

[0278] Exemplarily, three timestamps, namely t1, t2, and t3, are indicated in the reference information storage configuration message. Then, after receiving the message, the first communication node measures based on t1, t2, and t3 and stores the second reference information.

[0279] In some embodiments, the first communication node processes the obtained sensed data based on the measurement at t1, removes the features corresponding to the sensed target, so as to obtain the features corresponding to the environment or background.

[0280] 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, <> represents the corresponding relationship between two pieces of information. Then the first communication node stores the reference information based on the measurement of sensing measurement resource 1 at time t1; then the first communication node stores the reference information based on the measurement of sensing measurement resource 2 at time t2; then the first communication node stores the reference information based on the measurement of sensing measurement resource 3 at time t3.

[0281] The channel information storage indication is used to indicate the channel to be stored. For example, it indicates the channel information corresponding to the beam to be stored, or the channel information corresponding to the time 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.

[0282] In some embodiments, the reference information storage configuration message indicates one or more measurement windows. Each measurement window indicates a time range. The time window can be indicated in a combination of start time and duration, or a combination of start time and end time, or a reference time and upper and lower offsets, or other indication methods to support the measurement window.

[0283] Among them, a measurement window is indicated by an intermediate time and upper and lower offsets, and its range is [reference time - lower offset, reference time + upper offset].

[0284] The usage of the measurement window here is the same as that of the timestamp. The time window can appear alone or be jointly indicated with the sensing measurement resource, channel information storage indication, storage period, and reference information storage method.

[0285] In some embodiments, the first communication node obtains a plurality of measurement data within the measurement window, and the first communication node can reduce the storage overhead by averaging or other means.

[0286] The reference information storage configuration message carries at least one of the sensing measurement resource, timestamp, channel information storage indication, storage period, and reference information storage method, and the first communication node stores the second reference information according to one or more pieces of information carried in the reference information storage configuration message.

[0287] In some embodiments, the sensing measurement resource includes at least one of the following:

[0288] Beam identifier;

[0289] Beam resource allocation.

[0290] Among them, the beam identifier is used to indicate the corresponding beam. The second communication node can indicate to the first communication node to use this beam for sensing through the beam identifier; the beam resource allocation can configure the sensing resources that the first communication node needs to measure, and can also configure whether to save the corresponding reference information.

[0291] In some embodiments, the reference information storage method includes at least one of the following:

[0292] Multipath information;

[0293] Environmental information;

[0294] Point cloud information.

[0295] In some embodiments, before receiving the reference information storage configuration message, it further includes:

[0296] Sending a reference information storage capability message to the second communication node.

[0297] Among them, the reference information storage capability message can be understood as a kind of communication signaling, used to indicate whether the first communication node has the ability to store reference information.

[0298] The reference information storage capability message includes at least one of the following:

[0299] Storage space size;

[0300] Maximum time-domain signal processing capability;

[0301] Maximum frequency-domain signal processing capability;

[0302] Typical size of reference information storage.

[0303] The first communication node can send a reference information storage capability message to the second communication node before receiving the reference information storage configuration message, indicating whether this communication node has the ability to store reference information. After receiving the reference information storage capability message, the second communication node can 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 the second communication node has the ability to store reference information according to the reference information storage capability message, and then sends a reference information storage configuration message to the first communication node.

[0304] In some embodiments, after storing the second reference information according to the reference information storage configuration message, it further includes:

[0305] Receiving a reference information utilization configuration message sent by the second communication node.

[0306] Among them, 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 indication of the reference information utilization configuration message.

[0307] In some embodiments, the reference information utilization configuration message includes at least one of the following:

[0308] Beam identifier;

[0309] Timestamp;

[0310] Reference information utilization method.

[0311] Among them, 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 through the beam identifier; the first communication node can select the reference information at the corresponding moment through the timestamp; the first communication node can use the reference information for interference cancellation through the reference information utilization method.

[0312] The timestamp is used to indicate interference cancellation using the reference information stored at the moment indicated by the timestamp. The timestamp in the reference information utilization configuration message can include one or more.

[0313] In some embodiments, the reference information utilization configuration message includes multiple timestamp information, and the first communication node uses the reference information corresponding to the multiple timestamps together as input, for example, uses the mean value of these reference information for interference cancellation.

[0314] In some embodiments, the method further includes:

[0315] Receiving second interference cancellation indication information, where the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

[0316] Among them, the second interference cancellation indication information can be understood as a message used to indicate whether to perform interference cancellation. For example, it is indicated to perform interference cancellation by 1, not to perform interference cancellation by 0, or whether to perform interference cancellation by Y / N, or whether to perform interference cancellation by true / false, etc.

[0317] The first communication node receives the second interference cancellation indication information, and determines whether to perform interference cancellation according to the indication of the second interference cancellation indication information. For example, the first communication node analyzes the second interference cancellation indication information and determines that the second interference cancellation indication information carries a 1, and determines to perform interference cancellation. The second interference cancellation indication information may be received before the reference information response message, may be received after the reference information response message, or may be received simultaneously with the reference information response message, etc. The second interference cancellation indication information may be sent once or may be sent multiple times. The second interference cancellation indication information may be sent through communication signaling. For example, the second interference cancellation indication information is carried in the communication signaling.

[0318] In some embodiments, the reference information utilization configuration message further includes: a second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0319] In some embodiments, the second interference cancellation indication information includes at least one of the following:

[0320] An indication of interference cancellation;

[0321] Perceived resource configuration;

[0322] Perceived measurement data;

[0323] Timestamp.

[0324] Among them, the indication of interference cancellation is used to indicate whether to perform interference cancellation; the perceived resource configuration is used to configure interference cancellation when measuring the perceived resources to obtain perceived data. The perceived measurement data is used to indicate the data reported after the perceived measurement. The perceived resource configuration, the perceived measurement data, and the timestamp respectively correspond to an indication of interference cancellation.

[0325] In some embodiments, the reference information storage configuration message further includes: a second interference cancellation indication information, which is used to indicate whether the first communication node performs interference cancellation.

[0326] That is, the second interference cancellation indication information may be sent through other communication signaling, or may be carried in the reference information utilization configuration message or the reference information storage configuration message.

[0327] In some embodiments, the indication of interference cancellation includes at least one of the following: an indication of background cancellation, an indication of environmental cancellation.

[0328] In some embodiments, the method further includes:

[0329] Sending second perceived measurement data to the second communication node;

[0330] The second perceived measurement data includes at least one of the following:

[0331] Interference cancellation identifier;

[0332] Perceived data format;

[0333] Perceived data;

[0334] Perceived signal resources corresponding to the perceived data;

[0335] Reference channel information.

[0336] Among them, the second perceived measurement data can be understood as the data obtained after perceived measurement processing. The interference cancellation identifier indicates whether to eliminate the influence of interference during the process of obtaining the perceived data; the perceived data format is used to indicate the format of the perceived data; the perceived signal resources corresponding to the perceived data are used to indicate the data of which perceived signal resources the perceived data is measured for; the reference channel information is used to indicate the reference channel information used during interference cancellation.

[0337] During the measurement process, when the first communication node receives a perceived signal, it processes the perceived signal to obtain perceived measurement data, and sends the perceived measurement data as the second perceived measurement data to the second communication node.

[0338] In some embodiments, the first communication node is a perceived receiving end, and the second communication node is a perceived function.

[0339] For the signal processing method provided by the embodiments of the present application, the first communication node stores the second reference information according to the received reference information storage configuration message, and uses the second reference information to assist in interference cancellation during the perceived signal processing process. The second reference information may include one or more of perceived measurement resources, timestamps, channel information storage indications, storage periods, and reference information storage methods. The first communication node performs interference cancellation on the background or environment according to the above information, improves the efficiency of perceived processing, reduces the influence of interference, improves the perceived accuracy, and reduces the perceived data reporting overhead. And the embodiments of the present application can also indicate how to use the reference information through the reference information utilization configuration message, better assisting the first communication node in interference cancellation.

[0340] Figure 5 For the flowchart of another signal processing method provided by an embodiment, as Figure 5 shown, the signal processing method described in the embodiments of the present application is applied to the second communication node, and this method includes S410:

[0341] S410. Send a reference information storage configuration message, where the reference information storage configuration message is used to instruct the first communication node to store the second reference information, and the second reference information is used to assist the first communication node in performing interference cancellation during the perceived signal processing process.

[0342] 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 meeting certain triggering conditions, or can send the reference information storage configuration message periodically. Among them, meeting certain triggering conditions can be setting triggering conditions in advance, detecting in real time whether the data meets the triggering conditions, or determining that the triggering conditions are met after receiving the corresponding message sent by the first communication node.

[0343] In some embodiments, the second communication node can trigger the sending of the reference information storage configuration 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 the perceived data quality, the signal strength threshold of the corresponding path of the environment or background, the Doppler frequency shift threshold of the corresponding path of the environment or background, the phase threshold of the corresponding path of the environment or background, the intensity threshold of the corresponding point of the environment or background, the Doppler frequency shift threshold of the corresponding point of the environment or background, the phase threshold of the corresponding point of the environment or background, the number of corresponding paths of the environment or background, and the proportion of the corresponding paths of the environment or background. Here, taking the signal strength threshold of the corresponding path of the environment or background as an example, when the signal strength threshold of the corresponding path of the environment or background is Pth. For example, the signal strength of a certain path at time T1 is P1, and P1≥Pth, then the second communication node needs to send a reference information storage configuration message. Similarly, the phase threshold or Doppler frequency shift threshold means that the phase or Doppler frequency shift is not less than this threshold, then the second communication node needs to send a reference information storage configuration message to the first communication node.

[0344] The second communication node instructs the first communication node to obtain and store the corresponding second reference information through the reference information storage configuration message, so that the first communication node can perform interference cancellation according to the second reference information when performing sensing signal processing, and eliminate environmental information, background information, etc. Since the changes in the environment and background are relatively slow, this embodiment can use relatively static environmental and background information as reference information for sensing signal processing, which helps to eliminate sensing interference.

[0345] In the signal processing method provided by the embodiments of the present application, the second communication node sends a reference information storage configuration message, and instructs the first communication node to store the corresponding 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. The first communication node performs interference cancellation according to the second reference information during the process of processing the sensing signal, improves the efficiency of sensing processing, reduces the influence of interference, improves the sensing accuracy, and reduces the sensing data reporting overhead.

[0346] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0347] Sensing measurement resources;

[0348] Timestamp;

[0349] Channel information storage indication;

[0350] Storage period;

[0351] Reference information storage mode.

[0352] In some embodiments, the 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 a start time and a duration, or a combination of a start time and an end time, or a reference time and an upper offset and a lower offset, or other indication methods to support the measurement window.

[0353] Among them, the intermediate time, as well as the upper offset and the lower offset, are used to indicate a measurement window, and its range is [reference time - lower offset, reference time + upper offset].

[0354] The usage mode of the measurement window here is the same as that of the timestamp. The time window can appear alone or be jointly indicated with the sensing measurement resource, the channel information storage indication, the storage period, and the reference information storage mode.

[0355] In some embodiments, the first communication node measures and obtains a plurality of measurement data within the measurement window, and the first communication node can reduce the storage overhead by averaging or other means.

[0356] In some embodiments, the sensing measurement resource includes at least one of the following:

[0357] Beam identifier;

[0358] Beam resource configuration.

[0359] In some embodiments, the reference information storage mode includes at least one of the following:

[0360] Multipath information;

[0361] Environmental information;

[0362] Point cloud information.

[0363] In some embodiments, before sending the reference information storage configuration message, the method further includes:

[0364] Receiving a reference information storage capability message.

[0365] The reference information storage capability message includes at least one of the following:

[0366] Storage space size;

[0367] Maximum time-domain signal processing capability;

[0368] Maximum frequency domain signal processing capability;

[0369] Typical size of reference information storage.

[0370] In some embodiments, the method further includes:

[0371] Sending reference information using a configuration message.

[0372] In some embodiments, the reference information using the configuration message includes at least one of the following:

[0373] Beam identifier;

[0374] Timestamp;

[0375] Reference information utilization mode.

[0376] The timestamp is used to indicate interference cancellation using the reference information stored at the moment indicated by the timestamp. The timestamp in the reference information utilization configuration message may include one or more.

[0377] In some embodiments, the reference information utilization configuration message includes multiple timestamp information, and the first communication node uses the corresponding reference information of the multiple timestamps together as input, for example, using the mean value of these reference information for interference cancellation.

[0378] In some embodiments, the method further includes:

[0379] Sending second interference cancellation indication information, where the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

[0380] In some embodiments, the reference information utilization configuration information further includes: second interference cancellation indication information, where the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

[0381] In some embodiments, the second interference cancellation indication message includes at least one of the following:

[0382] Indication of interference cancellation;

[0383] Sensing resource configuration;

[0384] Sensing measurement data;

[0385] Timestamp.

[0386] In some embodiments, the method further includes:

[0387] Receiving second sensing measurement data;

[0388] The second sensing measurement data includes at least one of the following:

[0389] Interference cancellation identifier;

[0390] Perceived data format;

[0391] Perceived data;

[0392] Perceived signal resources corresponding to the perceived data;

[0393] Reference channel information.

[0394] In the signal processing method provided by the embodiments of the present application, the first communication node stores the second reference information according to the received reference information storage configuration message, and uses the second reference information to assist in interference cancellation during the perceived signal processing. The second reference information may include one or more of perceived measurement resources, timestamps, channel information storage instructions, storage periods, and reference information storage methods. The first communication node performs interference cancellation on the background or environment according to the above information, improves the efficiency of perceived processing, reduces the impact of interference, improves the perceived accuracy, and reduces the overhead of perceived data reporting. In addition, the embodiments of the present application can also indicate how to use the reference information through the reference information utilization configuration message, so as to better assist the first communication node in interference cancellation.

[0395] The signal processing process is described through the following embodiments:

[0396] Embodiment 1

[0397] Taking the second communication node configuring the reference information of the first communication node as an example, the signal processing process is described. The first communication node may be a perceived receiving end, and the second communication node may be a perceived function.

[0398] The second communication node obtains the perceived data of multiple first communication nodes, or data in other ways (such as cameras, radars). The second communication node processes these data and can obtain environmental information of different larger areas. These information can be used as the reference information of the first communication node for interference cancellation, reducing the complexity of the perceived algorithm processing.

[0399] The reference information obtained by the second communication node may be based on the processing results of one or more perceived data, or based on the processing results of the perceived data obtained by multiple first communication nodes, or obtained in other ways.

[0400] The second communication node sends a reference information response message to the first communication node, and carries the first reference information of the perceived processing in the reference information response message.

[0401] Exemplarily, the first communication node may send a reference information request message to the second communication node, requesting the perceived function to send the reference information.

[0402] Figure 6An interaction example diagram for sending reference information is provided. 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.

[0403] In the reference information response message sent by the second communication node to the first communication node, it includes at least one of the following parameters:

[0404] (1) Multipath information;

[0405] (2) Environment information;

[0406] (3) Point cloud information;

[0407] (4) Timestamp;

[0408] (5) Beam resource identifier;

[0409] (6) Valid time.

[0410] In some embodiments, the multipath information refers to the information of several paths with the front signal energy of the paths in the environment or background, or the multipath information that can reflect the environmental characteristics.

[0411] In some embodiments, the multipath information includes the characteristics of one or more paths, and the characteristics of each path include at least one of the following parameters;

[0412] (1) Signal strength;

[0413] (2) Delay;

[0414] (3) Angle of departure;

[0415] (4) Angle of arrival;

[0416] (5) Doppler.

[0417] In some embodiments, the environment information refers to the characteristic information of the main buildings, trees, etc. in the environment.

[0418] In some embodiments, the environment information includes the characteristics of one or more environmental objects, and the characteristics of each environmental object include at least one of the following parameters:

[0419] (1) Size of the environmental object;

[0420] (2) Location of the environmental object;

[0421] (3) RCS (Radar Cross Section) of the environmental object.

[0422] In some embodiments, the point cloud information refers to the point cloud information of the environment.

[0423] In some embodiments, the point cloud information includes the features of one or more points, and the features of each point include at least one of the following parameters:

[0424] (1) Time delay;

[0425] (2) Doppler;

[0426] (3) Signal strength;

[0427] (4) Distance;

[0428] (5) Micro-Doppler feature.

[0429] In some embodiments, the timestamp refers to the time corresponding to the reference information.

[0430] In some embodiments, in the reference information response message, multiple timestamps and the reference information corresponding to each timestamp are carried.

[0431] In some embodiments, before receiving the reference information response message sent by the second communication node, the first communication node sends a reference information request message to the second communication node, for requesting information that can assist in interference cancellation. Among them, the interference cancellation includes at least one of background cancellation and environment cancellation.

[0432] In the reference information request message, at least one of the following parameters is included:

[0433] (1) Sensing receiver ID;

[0434] (2) Location of the sensing receiver;

[0435] (3) Sensing transmitter ID;

[0436] (4) Location of the sensing transmitter;

[0437] (5) Sensing resource configuration;

[0438] (6) Number N of multipath information;

[0439] (7) Timestamp.

[0440] Among them, the sensing receiver ID is the identifier of the sensing receiver.

[0441] The location of the sensing receiver is used to indicate the location where the sensing receiver is located.

[0442] The sensing transmitter ID is the identifier of the sensing transmitter.

[0443] The location of the sensing transmitter is used to indicate the location where the sensing transmitter is located.

[0444] The sensing resource configuration is used to indicate the time-frequency domain configuration of the resources for sensing between the sensing transmitter and the sensing receiver.

[0445] In some embodiments, the sensing resource configuration includes at least one of bandwidth, beam configuration, subcarrier spacing, and time-domain pattern.

[0446] The number N of multipath information is used to indicate the information of the strongest N paths requested.

[0447] After the first communication node receives the reference information response message sent by the second communication node, it uses the first reference information to reduce the influence of the environment and background on sensing.

[0448] Exemplarily, the first communication node uses the multipath information in the reference information response message to eliminate the multipath influence of the environment or background in sensing and reduce the false alarm probability.

[0449] In some embodiments, the first communication node performs interference cancellation using the first reference information. Figure 7 A schematic diagram of the first communication node using the reference information is provided. The first communication node stores the first reference information at time T 0 At time T 1 When performing sensing interference cancellation at time T 0 The first reference information at time T 1 And the information sensed at time T

[0450] In some embodiments, the first communication node stores the first reference information at multiple times, and the first reference information may be the original channel information.

[0451] When the environment or background information changes, such as weather changes, such as changes in buildings (billboard removal), etc., the second communication node needs to update the environment or background information. In order to reduce the data volume of the reference information sent, the second communication node sends a reference information update message to the first communication node, which includes at least one of the following parameters:

[0452] (1) Differential information of multipath information;

[0453] (2) Differential information of environmental information;

[0454] (3) Differential information of point cloud information;

[0455] (4) Timestamp;

[0456] (5) Beam resource identifier;

[0457] (6) Valid time;

[0458] (7) Reference information identifier;

[0459] (8) Reference information timestamp.

[0460] The differential information of multipath information refers to the change of multipath compared with the reference information.

[0461] In some embodiments, the differential information of multipath information includes the differential information of one or more paths, and the differential information of each path includes at least one of the following parameters;

[0462] (1) Signal strength;

[0463] (2) Delay;

[0464] (3) Angle of departure;

[0465] (4) Angle of arrival;

[0466] (5) Doppler.

[0467] In some embodiments, when the change of the path is less than the preset threshold, the information of the path is not updated. The preset threshold can be one or a combination of the signal strength change threshold, the delay change threshold, the angle of departure change threshold, the angle of arrival change threshold, and the Doppler change threshold.

[0468] In some embodiments, the differential information of environmental information refers to the change of the characteristics of buildings, trees, etc. in the environment compared with the reference information.

[0469] In some embodiments, the differential information of environmental information includes the differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following parameters:

[0470] (1) Size of the environmental object;

[0471] (2) Location of the environmental object;

[0472] (3) RCS (Radar Cross Section) of the environmental object.

[0473] In some embodiments, the differential information of point cloud information refers to the change of the point cloud information of the environment compared with the reference information.

[0474] In some embodiments, the differential information of point cloud information includes the differential information of one or more points, and the differential information of each point includes at least one of the following parameters:

[0475] (1) Delay change;

[0476] (2) Doppler change;

[0477] (3) Signal strength change;

[0478] (4) Distance change;

[0479] (5) Micro-Doppler feature change.

[0480] Embodiment 2

[0481] Taking the configuration of the first communication node by the second communication node to store reference information as an example to illustrate the signal processing process. The first communication node may be a sensing receiving end, and the second communication node may be a sensing function. In a wireless communication system, the sensing receiving end may be a base station or a UE. The form of the base station may be a Transmission and Reception Point (TRP), a Roadside Unit (RSU), or others. The form of the UE may be a terminal, a vehicle-mounted device, etc.

[0482] Exemplarily, for example, in the scenario where the base station transmits and receives by itself, since the position of the base station is usually fixed, the changes in its surrounding environment are usually relatively small. The second communication node sends a reference information storage configuration message to the first communication node, and configuration parameters for the first communication node to store the reference information are carried in the reference information storage configuration message.

[0483] 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 of the reference information storage configuration message, and the second reference information is obtained after storage.

[0484] In the subsequent sensing process, the first communication node uses the existing second reference message to optimize the sensing signal processing, reduce the influence of the environment and background multipath on the sensing processing, and improve the sensing performance.

[0485] 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, and the capability of the first communication node to store the reference information is carried in the reference information storage capability message.

[0486] 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, and which reference information the first communication node uses for sensing processing is carried in the reference information utilization configuration message.

[0487] Exemplarily, Figure 8 An implementation example diagram of the second communication node configuring the first communication node to store reference information is provided.

[0488] In the reference information storage configuration message sent by the second communication node to the first communication node, at least one of the following parameters is included:

[0489] (1) Sensing measurement resources;

[0490] (2) Timestamp;

[0491] (3) Channel information storage indication;

[0492] (4) Storage period;

[0493] (5) Reference information storage method.

[0494] In sensing resource configuration, the sensing resources to be measured are carried and the corresponding reference information is saved. Among the sensing measurement resources, at least one of the following parameters is included:

[0495] (1) Beam identifier;

[0496] (2) Beam resource configuration.

[0497] Figure 9 An example diagram of different beam sensing is provided. Taking the first communication node as the base station as an example, the base station serves as the sensing transmitter and the sensing receiver, sending 5 sensing beams and using these 5 beams for sensing. The second communication node configures the sensing resources (time-frequency-spatial-domain sensing resources corresponding to 5 beams) that the base station needs to measure, as well as whether the 5 beams need to save the corresponding reference information.

[0498] Exemplarily, the second communication node notifies the base station to save the channel information of beams #2, #3, and #4.

[0499] There are two cases for the channel information storage indication:

[0500] 1) Explicit indication. An indicator is used to indicate whether each beam / time needs to save the corresponding channel information. In some embodiments, an indicator value of 1 indicates that the corresponding channel information needs to be saved; an indicator value of 0 indicates that the corresponding channel information does not need to be saved. Exemplarily, in the channel information storage configuration message, all beam / time corresponding indicators are carried, and it is determined whether to save the corresponding channel information according to the indicators.

[0501] 2) Implicit indication. In the channel information storage configuration message, only the sensing measurement resources and timestamp information that need to be saved are carried.

[0502] The storage period is used to indicate the period for storing the reference channel information.

[0503] In some embodiments, the storage period can be stored in units of symbols or slots.

[0504] Exemplarily, when the storage period indicates 10 and the unit is slots. Then the first communication node stores the reference information at intervals of 10 slots.

[0505] In some embodiments, the starting time of storage is also indicated in the reference information storage configuration.

[0506] In some embodiments, the maximum number of stored reference information is also indicated in the reference information storage configuration. When the number of stored reference information reaches the maximum number of stored reference information, when the next reference information to be stored needs to be stored, the earliest stored reference information will be removed and replaced with the reference information to be stored. Figure 10 An example diagram of periodic storage of reference information is provided, where the horizontal axis is time, and the unit can be time slots, etc., which is not limited in this embodiment.

[0507] The reference information storage method is used to indicate the method of storing reference information, and includes at least one of the following parameters:

[0508] (1) Multipath information;

[0509] (2) Environmental characteristics;

[0510] (3) Point cloud information;

[0511] (4) Timestamp.

[0512] The second communication node sends a reference information utilization configuration message to the first communication node, and at least one of the following parameters is included in the message:

[0513] (1) Beam identifier;

[0514] (2) Timestamp;

[0515] (3) Reference information utilization method.

[0516] The first communication node eliminates interference by using the corresponding reference information according to the indication of the second communication node.

[0517] The second communication node stores the moments T 1 , T 2 ,......, T N There are a total of N reference information. The second communication node sends a reference information utilization configuration message to the first communication node, and timestamp information such as T 2 is carried in the reference information utilization configuration message, which is used to indicate that the first communication node uses the reference information (R 2 ) at moment T 2 to eliminate the multipath of the environment and background.

[0518] In some embodiments, the channel information obtained by the first communication node receiving the sensing signal is S, then the reference information (R 2 ) at moment T 2To eliminate multipath in the environment and background, differential S-R can usually be performed. 2 .

[0519] The reference information utilization method is used to indicate the way for the first communication node to utilize the stored reference information, and at least includes one of the following parameters:

[0520] (1) Positive reference information;

[0521] (2) Negative reference information;

[0522] Positive reference information and negative reference information indicate the reference information used in sensing processing. Positive reference information is used to indicate the reference information that plays a positive role in sensing signal processing, while negative reference information is used to indicate the reference information that plays a negative role in sensing signal processing.

[0523] Positive reference information at least includes one of the following parameters:

[0524] (1) Time information;

[0525] (2) Sensing resource information;

[0526] (3) Reference information format.

[0527] Negative reference information at least includes one of the following parameters:

[0528] (1) Time information;

[0529] (2) Sensing resource information;

[0530] (3) Reference information format.

[0531] Exemplarily, the second communication node sends the above reference information utilization configuration message to the first communication node, and the reference information utilization method parameter is carried in the reference information utilization configuration message. The following parameters are carried in this parameter:

[0532] (1) Positive reference information: T 4

[0533] (2) Negative reference information: T 2 and T 1

[0534] The reference information corresponding to T stored in the first communication node is R 4 , T 4 , T 2 corresponding reference information is R 2 , T 1 corresponding reference information is R 1 , and the channel information obtained by the first communication node receiving the sensing signal is S. Then, the channel information for the first communication node to obtain the elimination of interference influence is: S + R4 -R 2 -R 1 。

[0535] In some embodiments, the first communication node uses parameters in calculations to correct the weights of each reference information in the calculations.

[0536] Embodiment 3

[0537] Taking the second communication node configuring whether the first communication node performs interference cancellation as an example to illustrate the signal processing process. The second communication node may have a sensing function, and the first communication node may be a sensing receiver.

[0538] In a wireless communication system, the sensing capabilities of devices are different. For example, the processing capabilities of sensing data are limited due to differences in chips. Moreover, during the sensing process, there are differences in the sensing requirements of different services. For example, detection, positioning, and tracking services focus on the characteristics of moving targets, which are usually people, vehicles, drones, animals, etc. For environmental reconstruction applications such as real-time construction of 3D maps and construction of environmental targets (buildings, trees, etc.), they focus on the characteristics of environmental targets. There are also differences in the sensing characteristics that different sensing services focus on.

[0539] 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.

[0540] In some embodiments, the second communication node sends interference cancellation indication information to the first communication node, and the interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

[0541] In some embodiments, the interference cancellation indication information is the first interference cancellation indication information or the second interference cancellation indication information.

[0542] In some embodiments, the interference cancellation indication information can be carried by a separately sent message, or can be carried by using a configuration message with reference information, that is, the interference cancellation indication information can be carried in the reference information using the configuration message.

[0543] The interference cancellation indication information at least includes one of the following parameters:

[0544] (1) Indication of interference cancellation;

[0545] (2) Sensing resource configuration;

[0546] (3) Sensing measurement data;

[0547] (4) Timestamp.

[0548] The indication of interference cancellation is used to indicate whether the first communication node needs to perform environmental or background cancellation.

[0549] The sensed measurement data is used to indicate the data reported by the sensed measurement. The data types reported by the sensed measurement include at least one of the following types:

[0550] (1) Raw data;

[0551] (2) Point cloud data;

[0552] (3) Sensing result.

[0553] Among them, the raw data refers to the data obtained by the first communication node after preprocessing the sensed measurement signal.

[0554] In some embodiments, the preprocessing includes signal stitching of multiple antennas, spatial domain filtering, etc.

[0555] The point cloud data refers to being composed of some points with feature information. Each point carries at least one of the following parameters:

[0556] (1) Position;

[0557] (2) Amplitude;

[0558] (3) Phase;

[0559] (4) Doppler;

[0560] (5) Velocity;

[0561] (6) Angle of Arrival (AoA);

[0562] (7) Angle of Departure (AoD).

[0563] In some embodiments, in this message, a set of the above information is carried. In this way, the mapping relationship of the above parameters can be carried in the above message.

[0564] In some embodiments, each sensed resource configuration corresponds to an interference cancellation indication.

[0565] In some embodiments, each sensed measurement type corresponds to an interference cancellation indication.

[0566] In some embodiments, each timestamp corresponds to an interference cancellation indication.

[0567] Embodiment 4

[0568] Taking the first communication node reporting the sensed measurement data as an example to illustrate the signal processing process. The first communication node can be a sensed receiving end, and the second communication node can be a sensing function.

[0569] The first communication node receives a sensing signal and needs to process the sensing signal. Figure 11 An example diagram of sensing signal transmission is provided, such as Figure 11 shown, where the UE is the sensing transmitter and the base station is the sensing receiver, and the sensing targets can be vehicles, pedestrians, drones, etc.

[0570] After receiving the sensing signal as the first communication node, the sensing receiver processes the sensing signal to obtain sensing data and sends the sensing measurement data to the second communication node. The sensing measurement data needs to carry at least one of the following parameters:

[0571] (1) Interference cancellation flag;

[0572] (2) Sensing data format;

[0573] (3) Sensing data;

[0574] (4) Sensing signal resources corresponding to the sensing data;

[0575] (5) Reference channel information.

[0576] In some embodiments, the sensing measurement data is the first sensing measurement data or the second sensing measurement data.

[0577] The interference cancellation flag indicates whether to eliminate the influence of interference during the process of obtaining the sensing data. Exemplarily, the influence of interference can be multipath of the environment and / or background.

[0578] The sensing data format is used to indicate the format of the sensing data and needs to carry at least one of the following parameters:

[0579] (1) Point cloud data;

[0580] (2) Multipath data.

[0581] The sensing signal resources corresponding to the sensing data are used to indicate the sensing signals resources for which the sensing data is measured.

[0582] The reference channel information is used to indicate the reference channel information used during interference cancellation and needs to carry at least one of the following parameters:

[0583] (1) Time information;

[0584] (2) Sensing resource information;

[0585] (3) Beam information.

[0586] Figure 12 The structural schematic diagram of a signal processing device provided for an embodiment. This device is applied to the first communication node, such asFigure 12 As shown, the device includes: a reference information receiving module 510.

[0587] The reference information receiving module 510 is configured to receive a reference information response message, where the reference information response message includes first reference information, and the first reference information is used to assist a first communication node in performing interference cancellation during the perception signal processing.

[0588] In the signal processing device provided in the embodiments of the present application, the first communication node receives a reference information response message, the reference information response message includes first reference information, the first reference information is used to assist the first communication node in performing interference cancellation during the perception 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, and the first communication node performs interference cancellation according to the first reference information during the process of processing the perception signal, improving the efficiency of perception processing, reducing the impact of interference, improving the perception accuracy, and reducing the perception data reporting overhead.

[0589] In some embodiments, the first reference information includes at least one of the following:

[0590] Multipath information;

[0591] Environmental information;

[0592] Point cloud information;

[0593] Timestamp;

[0594] Beam resource identifier;

[0595] Valid time.

[0596] In some embodiments, the multipath information includes the characteristics of one or more paths, and the characteristics of each path include at least one of the following:

[0597] Signal strength;

[0598] Time delay;

[0599] Angle of departure;

[0600] Angle of arrival;

[0601] Doppler.

[0602] In some embodiments, the environmental information includes the characteristics of one or more environmental objects, and the characteristics of each environmental object include at least one of the following:

[0603] The size of the environmental object;

[0604] The position of the environmental object;

[0605] The radar cross section of the environmental object.

[0606] In some embodiments, the point cloud information includes the features of one or more points, and the features of each point include at least one of the following:

[0607] Time delay;

[0608] Doppler;

[0609] Signal strength;

[0610] Distance;

[0611] Micro-Doppler feature.

[0612] In some embodiments, the device further includes:

[0613] A reference information request sending module, configured to send a reference information request message to a second communication node before receiving a reference information response message, where the reference information request message is used to request first reference information.

[0614] In some embodiments, the reference information request message includes at least one of the following:

[0615] The identifier of the sensing receiver;

[0616] The location of the sensing receiver;

[0617] The identifier of the sensing transmitter;

[0618] The location of the sensing transmitter;

[0619] Sensing resource configuration;

[0620] The number of multipath information;

[0621] Timestamp.

[0622] In some embodiments, the device further includes:

[0623] An update message receiving module, configured to receive a reference information update message, where the reference information update message is used to update the first reference information.

[0624] In some embodiments, the reference information update message includes at least one of the following:

[0625] Differential information of multipath information;

[0626] Differential information of environmental information;

[0627] Differential information of point cloud information;

[0628] Timestamp;

[0629] Beam resource identifier;

[0630] Valid time;

[0631] Reference information identifier;

[0632] Reference information timestamp.

[0633] In some embodiments, the differential information of the multipath information includes the differential information of one or more paths, and the differential information of each path includes at least one of the following:

[0634] Signal strength;

[0635] Time delay;

[0636] Angle of departure;

[0637] Angle of arrival;

[0638] Doppler.

[0639] In some embodiments, the differential information of the environmental information includes the differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0640] Size of the environmental object;

[0641] Position of the environmental object;

[0642] Radar cross section of the environmental object.

[0643] In some embodiments, the differential information of the point cloud information includes the differential information of one or more points, and the differential information of each point includes at least one of the following:

[0644] Time delay change;

[0645] Doppler change;

[0646] Signal strength change;

[0647] Distance change;

[0648] Micro-Doppler feature change.

[0649] In some embodiments, the apparatus further includes:

[0650] A first interference indication receiving module, configured to receive first interference cancellation indication information, where the first interference cancellation indication information is used to indicate whether a first communication node performs interference cancellation.

[0651] In some embodiments, the reference information response message further includes: first interference cancellation indication information, where the first interference cancellation indication information is used to indicate whether a first communication node performs interference cancellation.

[0652] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0653] Indicator of interference cancellation;

[0654] Perceived resource allocation;

[0655] Perceived measurement data;

[0656] Timestamp.

[0657] In some embodiments, the device further includes:

[0658] A first perceived data sending module, configured to send first perceived measurement data to a second communication node;

[0659] The first perceived measurement data includes at least one of the following:

[0660] Interference cancellation identifier;

[0661] Perceived data format;

[0662] Perceived data;

[0663] Perceived signal resources corresponding to the perceived data;

[0664] Reference channel information.

[0665] In some embodiments, the perceived data format includes at least one of the following:

[0666] Point cloud data;

[0667] Multipath data.

[0668] The signal processing device proposed in this embodiment and the signal processing method proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the signal processing method.

[0669] Figure 13 It is a schematic structural diagram of another signal processing device provided for an embodiment. This device is applied to a second communication node, as Figure 13 shown. The device includes: a reference information sending module 610.

[0670] Among them, the reference information sending module 610 is configured to send a reference information response message, and the reference information response message includes first reference information, and the first reference information is used to assist a first communication node in performing interference cancellation during the perceived signal processing process.

[0671] In the signal processing device provided by the embodiments of the present application, the second communication node sends a reference information response message, and 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, so that the first communication node can perform interference cancellation according to the first reference information during the process of processing the sensing signal, improve the efficiency of sensing processing, reduce the influence of interference, improve the sensing accuracy, and reduce the sensing data reporting overhead.

[0672] In some embodiments, the first reference information includes at least one of the following:

[0673] Multipath information;

[0674] Environmental information;

[0675] Point cloud information;

[0676] Timestamp;

[0677] Beam resource identifier;

[0678] Valid time.

[0679] In some embodiments, the multipath information includes the characteristics of one or more paths, and the characteristics of each path include at least one of the following:

[0680] Signal strength;

[0681] Time delay;

[0682] Angle of departure;

[0683] Angle of arrival;

[0684] Doppler.

[0685] In some embodiments, the environmental information includes the characteristics of one or more environmental objects, and the characteristics of each environmental object include at least one of the following:

[0686] Size of the environmental object;

[0687] Position of the environmental object;

[0688] Radar cross section of the environmental object.

[0689] In some embodiments, the point cloud information includes the characteristics of one or more points, and the characteristics of each point include at least one of the following:

[0690] Time delay;

[0691] Doppler;

[0692] Signal strength;

[0693] Distance;

[0694] Micro-Doppler feature.

[0695] In some embodiments, the device further includes:

[0696] A reference information request receiving module, configured to receive a reference information request message, where the reference information request message is used to request first reference information.

[0697] In some embodiments, the reference information request message includes at least one of the following:

[0698] The identifier of the sensing receiving end;

[0699] The location of the sensing receiving end;

[0700] The identifier of the sensing sending end;

[0701] The location of the sensing sending end;

[0702] Sensing resource configuration;

[0703] The number of multipath information;

[0704] Timestamp.

[0705] In some embodiments, the device further includes:

[0706] An update message sending module, configured to send a reference information update message, where the reference information update message is used to update the first reference information.

[0707] In some embodiments, the reference information update message includes at least one of the following:

[0708] Differential information of multipath information;

[0709] Differential information of environmental information;

[0710] Differential information of point cloud information;

[0711] Timestamp;

[0712] Beam resource identifier;

[0713] Valid time;

[0714] Reference information identifier;

[0715] Reference information timestamp.

[0716] 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:

[0717] Signal strength;

[0718] Time delay;

[0719] Angle of departure;

[0720] Angle of arrival;

[0721] Doppler.

[0722] In some embodiments, the differential information of the environmental information includes the differential information of one or more environmental objects, and the differential information of each environmental object includes at least one of the following:

[0723] The size of the environmental object;

[0724] The position of the environmental object;

[0725] The radar cross section of the environmental object.

[0726] In some embodiments, the differential information of the point cloud information includes the differential information of one or more points, and the differential information of each point includes at least one of the following:

[0727] Time delay change;

[0728] Doppler change;

[0729] Signal strength change;

[0730] Distance change;

[0731] Micro-Doppler feature change.

[0732] In some embodiments, the device further includes:

[0733] A first interference indication sending module, which sends first interference cancellation indication information for indicating whether a first communication node performs interference cancellation.

[0734] In some embodiments, the reference information response message further includes: first interference cancellation indication information for indicating whether a first communication node performs interference cancellation.

[0735] In some embodiments, the first interference cancellation indication information includes at least one of the following:

[0736] Indication of interference cancellation;

[0737] Perception resource configuration;

[0738] Perception measurement data;

[0739] Timestamp.

[0740] In some embodiments, the device further includes:

[0741] A first perception data receiving module for receiving first perception measurement data;

[0742] The first perception measurement data includes at least one of the following:

[0743] Interference cancellation identifier;

[0744] Perception data format;

[0745] Perception data;

[0746] Perception signal resource corresponding to the perception data;

[0747] Reference channel information.

[0748] In some embodiments, the perception data format includes at least one of the following:

[0749] Point cloud data;

[0750] Multipath data.

[0751] The signal processing device proposed in this embodiment and the signal processing method proposed in the above embodiment belong to the same inventive concept. For technical details not described in detail in this embodiment, reference can be made to any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the signal processing method.

[0752] Figure 14 As shown in the structural schematic diagram of another signal processing device provided for an embodiment, the device is applied to a first communication node, such as Figure 14 shown, the device includes: a storage configuration message receiving module 710 and a second reference information storage module 720.

[0753] The storage configuration message receiving module 710 is configured to receive a reference information storage configuration message;

[0754] The second reference information storage module 720 is configured to store second reference information according to the reference information storage configuration message, and the second reference information is used to assist the first communication node in performing interference cancellation during the perception signal processing.

[0755] For the signal processing device provided by the embodiments of the present application, the first communication node receives a reference information storage configuration message and stores the 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 perception signal processing. After the first communication node stores the second reference information, it can perform interference cancellation according to the second reference information during the process of processing the perception signal, improve the efficiency of perception processing, reduce the influence of interference, improve the perception accuracy, and reduce the perception data reporting overhead.

[0756] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0757] Perception measurement resource;

[0758] Timestamp;

[0759] Channel information storage indication;

[0760] Storage period;

[0761] Reference information storage method.

[0762] In some embodiments, the sensing measurement resource includes at least one of the following:

[0763] Beam identifier;

[0764] Beam resource configuration.

[0765] In some embodiments, the reference information storage method includes at least one of the following:

[0766] Multipath information;

[0767] Environmental information;

[0768] Point cloud information.

[0769] In some embodiments, the apparatus further includes:

[0770] A storage capacity message sending module, configured to send a reference information storage capacity message to a second communication node before receiving a reference information storage configuration message.

[0771] In some embodiments, it further includes:

[0772] A configuration message receiving module, configured to receive a reference information utilization configuration message sent by a second communication node after storing second reference information according to the reference information storage configuration message.

[0773] In some embodiments, the reference information utilization configuration message includes at least one of the following:

[0774] Beam identifier;

[0775] Timestamp;

[0776] Reference information utilization method.

[0777] In some embodiments, it further includes:

[0778] A second interference indication receiving module, configured to receive second interference cancellation indication information, where the second interference cancellation indication information is used to indicate whether a first communication node performs interference cancellation.

[0779] In some embodiments, the reference information utilization configuration message further includes: second interference cancellation indication information, where the second interference cancellation indication information is used to indicate whether a first communication node performs interference cancellation.

[0780] In some embodiments, the second interference cancellation indication information includes at least one of the following:

[0781] Indication of interference cancellation;

[0782] Perceived resource configuration;

[0783] Perceived measurement data;

[0784] Timestamp.

[0785] In some embodiments, the device further includes:

[0786] A second perceived data sending module, configured to send second perceived measurement data to a second communication node;

[0787] The second perceived measurement data includes at least one of the following:

[0788] Interference cancellation identifier;

[0789] Perceived data format;

[0790] Perceived data;

[0791] Perceived signal resources corresponding to the perceived data;

[0792] Reference channel information.

[0793] The signal processing device proposed in this embodiment and the signal processing method proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be referred to in any of the above embodiments, and this embodiment has the same beneficial effects as the execution of the signal processing method.

[0794] Figure 15 It is a schematic structural diagram of another signal processing device provided for an embodiment. The device is applied to a second communication node, as Figure 15 shown. The device includes: a storage configuration message sending module 810.

[0795] The storage configuration message sending module 810 is configured to send a reference information storage configuration message, and 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 perceived signal processing.

[0796] In the signal processing device provided by the embodiments of the present application, the second communication node sends a reference information storage configuration message, and according to the configuration indication of the reference information storage configuration message, the first communication node stores corresponding second reference information, and the second reference information is used to assist the first communication node in interference cancellation during the sensing signal processing. The first communication node performs interference cancellation according to the second reference information during the process of processing the sensing signal, improves the efficiency of sensing processing, reduces the influence of interference, improves the sensing accuracy, and reduces the overhead of sensing data reporting.

[0797] In some embodiments, the reference information storage configuration message includes at least one of the following:

[0798] Sensing measurement resources;

[0799] Timestamp;

[0800] Channel information storage indication;

[0801] Storage period;

[0802] Reference information storage method.

[0803] In some embodiments, the sensing measurement resources include at least one of the following:

[0804] Beam identifier;

[0805] Beam resource configuration.

[0806] In some embodiments, the reference information storage method includes at least one of the following:

[0807] Multipath information;

[0808] Environmental information;

[0809] Point cloud information.

[0810] In some embodiments, the device further includes:

[0811] A storage capacity message receiving module, configured to receive a reference information storage capacity message.

[0812] In some embodiments, the device further includes:

[0813] A configuration message sending module, configured to send a reference information utilization configuration message.

[0814] In some embodiments, the reference information utilization configuration message includes at least one of the following:

[0815] Beam identifier;

[0816] Timestamp;

[0817] Reference information utilization method.

[0818] In some embodiments, the apparatus further comprises:

[0819] a second interference indication sending module, configured to send second interference cancellation indication information for indicating whether a first communication node performs interference cancellation.

[0820] In some embodiments, the reference information utilization configuration message further comprises: second interference cancellation indication information for indicating whether a first communication node performs interference cancellation.

[0821] In some embodiments, the second interference cancellation indication information comprises at least one of the following:

[0822] an indication of interference cancellation;

[0823] perceived resource configuration;

[0824] perceived measurement data;

[0825] a timestamp.

[0826] In some embodiments, the apparatus further comprises:

[0827] a second perceived data receiving module, configured to receive second perceived measurement data;

[0828] The second perceived measurement data comprises at least one of the following:

[0829] an interference cancellation identifier;

[0830] a perceived data format;

[0831] perceived data;

[0832] a perceived signal resource corresponding to the perceived data;

[0833] reference channel information.

[0834] The signal processing apparatus provided in this embodiment and the signal processing method provided in the foregoing embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in any of the foregoing embodiments, and this embodiment has the same beneficial effects as those of the signal processing method.

[0835] An embodiment of the present application further provides a communication node. Figure 16 As shown in the structural schematic diagram of a communication node provided in an embodiment, Figure 16 the communication node provided by the present application comprises 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, the above-mentioned signal processing method is implemented.

[0836] The communication node may further include a memory 920; the processor 910 in the communication node may be one or more, Figure 16 and one processor 910 is taken 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, so that the one or more processors 910 implement the signal processing method as described in the embodiments of the present application.

[0837] The communication node further includes: a communication device 930, an input device 940, and an output device 950.

[0838] The processor 910, memory 920, communication device 930, input device 940, and output device 950 in the communication node may be connected through a bus or other means, Figure 16 and taking connection through a bus as an example in Figure 16 .

[0839] The input device 940 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function control of the communication node. The output device 950 may include a display device such as a display screen.

[0840] The communication device 930 may include a receiver and a transmitter. The communication device 930 is configured to perform information transceiver communication according to the control of the processor 910.

[0841] The memory 920, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the signal processing method described in the embodiments of the present application (for example, the reference information receiving module 510 in the signal processing device, or the reference information sending module 910 in the signal processing device, or the stored configuration message receiving module 710 and the second reference information storage module 720 in the signal processing device, or the stored configuration message sending module 810 in the signal processing device). The memory 920 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; 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 further include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 920 may further include a memory remotely set relative to the processor 910, and these remote memories may be connected to the communication node through a network. Examples of the above networks include, but are not limited to, the Internet, an enterprise intranet, a local area network, a mobile communication network, and combinations thereof.

[0842] An embodiment of the present application further provides a storage medium, which stores a computer program that, when executed by a processor, implements any one of the signal processing methods in the embodiments of the present application.

[0843] Optionally, the signal processing method is applied to a first communication node and includes: receiving a reference information response message, where 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 perception signal processing.

[0844] Optionally, the signal processing method is applied to a second communication node and includes: sending a reference information response message, where 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 perception signal processing.

[0845] 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, where the second reference information is used to assist the first communication node in performing interference cancellation during the perception signal processing.

[0846] Optionally, the signal processing method is applied to a second communication node and includes: sending a reference information storage configuration message, where the reference information storage configuration message is used to instruct the 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 perception signal processing.

[0847] The computer storage medium of the embodiments of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage medium include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable CD-ROM, an optical storage device, a magnetic storage device, or any suitable combination of the above. The computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0848] A computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take various forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0849] The program code contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical fiber cable, radio frequency (RF), etc., or any suitable combination of the above.

[0850] An embodiment of the present 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 the present application.

[0851] The computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., by using an Internet service provider to connect through the Internet).

[0852] As described above, it is only an exemplary embodiment of the present application and is not used to limit the protection scope of the present application.

[0853] Those skilled in the art should understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable network browser, or a vehicle-mounted mobile station.

[0854] In general, the various embodiments of the present application can be implemented in hardware or in special-purpose circuits, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, a microprocessor, or other computing devices, although the present application is not limited thereto.

[0855] The embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages.

[0856] Any block diagram of a logical process in the accompanying drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules, and functions, or can represent a combination of program steps and logical circuits, modules, and functions. The computer program can be stored in a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical memory devices and systems (such as digital video disc (DVD) or compact disc (CD), etc.). The computer-readable medium can include non-transitory storage media. The data processor can be any type suitable for the local technical environment, such as, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

[0857] By way of illustrative and non-limiting examples, a detailed description of the exemplary embodiments of the present application has been provided above. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and the claims, without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined according to the claims.

Claims

1. A signal processing method, characterized in that: Applied to a first communication node, comprising: A reference information response message is received, where the reference information response message includes first reference information, where the first reference information is used to assist the first communication node in performing interference elimination during a sensing signal processing process.

2. The signal processing method according to claim 1, characterized in that: The first reference information includes at least one of the following: Multipath information; Environmental information; Point cloud information; Timestamp; Beam resource identifier; Validity period.

3. The signal processing method according to claim 2, characterized in that: The multipath information includes characteristics of one or more paths, and the characteristics of each path include at least one of the following: Signal strength; Delay; Leave the corner; Angle of arrival; Doppler.

4. The signal processing method according to claim 2, characterized in that: The environmental information includes features of one or more environmental objects, and the features of each environmental object include at least one of the following: The size of environmental objects; The location of environmental objects; Radar cross section of environmental objects.

5. The signal processing method according to claim 2, characterized in that: The point cloud information includes features of one or more points, and the features of each point include at least one of the following: Delay; Doppler; Signal strength; distance; Micro-Doppler characteristics.

6. The signal processing method according to claim 1, characterized in that: Before receiving the reference information response message, it also includes: A reference information request message is sent to the second communication node, where the reference information request message is used to request the first reference information.

7. The signal processing method according to claim 6, characterized in that: The reference information request message includes at least one of the following: Perceive the identity of the receiving end; Sense the location of the receiving end; Perceive the identity of the sender; Sense the location of the sender; Perceive resource allocation; The amount of multipath information; Timestamp.

8. The signal processing method according to claim 1, characterized in that: Also includes: A reference information update message is received, where the reference information update message is used to update the first reference information.

9. The signal processing method according to claim 8, characterized in that: The reference information update message includes at least one of the following: Differential information of multipath information; Differential information of environmental information; Differential information of point cloud information; Timestamp; Beam resource identifier; Validity period; Reference information identification; Reference information timestamp.

10. The signal processing method according to claim 9, characterized in that: 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: Signal strength; Delay; Leave the corner; Angle of arrival; Doppler.

11. The signal processing method according to claim 9, characterized in that: The differential information of the environmental 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: The size of environmental objects; The location of environmental objects; Radar cross section of environmental objects.

12. The signal processing method according to claim 9, characterized in that: 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: Delay variation; Doppler changes; Signal strength changes; Distance changes; Micro-Doppler characteristic changes.

13. The signal processing method according to claim 1, characterized in that: Also includes: First interference cancellation indication information is received, where the first interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

14. The signal processing method according to claim 1, characterized in that: The reference information response message also includes: first interference elimination indication information, and the first interference elimination indication information is used to indicate whether the first communication node performs interference elimination.

15. The signal processing method according to any one of claims 13 or 14, characterized in that: The first interference cancellation indication information includes at least one of the following: Instructions for interference elimination; Perceive resource allocation; Perception measurement data; Timestamp.

16. The signal processing method according to claim 1, characterized in that: Also includes: Sending first perception measurement data to a second communication node; The first perception measurement data includes at least one of the following: Interference elimination identification; Perceive data formats; Perception data; Perception signal resources corresponding to the perception data; Refer to channel information.

17. The signal processing method according to claim 16, characterized in that: The perception data format includes at least one of the following: Point cloud data; Multipath data.

18. A signal processing method, characterized in that: Applied to a second communication node, comprising: A reference information response message is sent, where the reference information response message includes first reference information, where the first reference information is used to assist the first communication node in performing interference elimination during the perception signal processing.

19. A signal processing method, characterized in that: Applied to a first communication node, comprising: receiving a reference information storage configuration message; The second reference information is stored according to the reference information storage configuration message, where the second reference information is used to assist the first communication node in performing interference elimination during the perception signal processing.

20. The signal processing method according to claim 19, characterized in that: The reference information storage configuration message includes at least one of the following: Perception measurement resources; Timestamp; Channel information storage indication; Storage period; Reference information storage method.

21. The signal processing method according to claim 20, characterized in that: The perception measurement resource includes at least one of the following: Beam identification; Beam resource configuration.

22. The signal processing method according to claim 20, characterized in that: The reference information storage method includes at least one of the following: Multipath information; Environmental information; Point cloud information.

23. The signal processing method according to claim 19, characterized in that: Before receiving the reference information storage configuration message, the method further includes: A reference information storage capability message is sent to the second communication node.

24. The signal processing method according to claim 19, characterized in that: After storing the second reference information according to the reference information storage configuration message, the method further includes: A reference information utilization configuration message sent by the second communication node is received.

25. The signal processing method according to claim 24, characterized in that: The reference information utilization configuration message includes at least one of the following: Beam identification; Timestamp; Reference information usage.

26. The signal processing method according to claim 19, characterized in that: Also includes: Second interference cancellation indication information is received, where the second interference cancellation indication information is used to indicate whether the first communication node performs interference cancellation.

27. The signal processing method according to claim 24, characterized in that: The reference information utilization configuration message also includes: second interference elimination indication information, and the second interference elimination indication information is used to indicate whether the first communication node performs interference elimination.

28. The signal processing method according to any one of claims 26 or 27, characterized in that: The second interference cancellation indication information includes at least one of the following: Instructions for interference elimination; Perceive resource allocation; Perception measurement data; Timestamp.

29. The signal processing method according to claim 19, characterized in that: Also includes: Sending second perception measurement data to a second communication node; The second perception measurement data includes at least one of the following: Interference elimination identification; Perceive data formats; Perception data; Perception signal resources corresponding to the perception data; Refer to channel information.

30. A signal processing method, characterized in that: Applied to a second communication node, comprising: A reference information storage configuration message is sent, where the reference information storage configuration message is used to instruct the first communication node to store second reference information, where the second reference information is used to assist the first communication node in performing interference elimination during perception signal processing.

31. A communication node, characterized in that: include: A memory, a processor, a program stored in the memory and executable on the processor, and a data bus for realizing connection and communication between the processor and the memory, wherein the program, when executed by the processor, realizes the steps of the signal processing method according to any one of claims 1 to 30.

32. A storage medium for computer-readable storage, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the signal processing method described in any one of claims 1-30.

33. A computer program product, characterized in that The computer program product comprises a computer program which, when executed by a processor, implements the signal processing method according to any one of claims 1 to 30.

Images