Information transmission method and device, information processing method and device, access network equipment and core network equipment

Abstract

The invention provides an information transmission method and device, an information processing method and device, access network equipment and core network equipment, and the method comprises the steps: measuring an echo signal of a received sensing signal, and obtaining channel information; sending the channel information to a core network device; wherein the channel information comprises at least one of the following items: time delay domain channel information, Doppler domain channel information, space domain channel information, a time delay domain compression factor, a Doppler domain compression factor and a space domain compression factor. According to the scheme, the channel information is obtained through measurement based on the echo signal of the received sensing signal, and the channel information is sent to the core network equipment, so that the data volume of the sent channel data can be prevented from being too large, and the signaling overhead for sending the channel data can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information transmission and processing method, apparatus, access network equipment, and core network equipment. Background Technology

[0002] Currently, the main drawbacks of existing sensing technologies include:

[0003] Each base station needs to report the channel data obtained from the original measurements, which results in an excessive amount of data to be reported and causes a large signaling overhead. Summary of the Invention

[0004] This application provides an information transmission and processing method, apparatus, access network equipment, and core network equipment to solve the problem of high signaling overhead in the process of base station reporting channel data.

[0005] To address the aforementioned technical problems, embodiments of this application provide an information transmission method, executed by a first access network device, comprising:

[0006] The echo signal of the received sensing signal is measured to obtain channel information;

[0007] Send the channel information to the core network equipment;

[0008] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0009] Optionally, the method further includes:

[0010] The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0011] Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information;

[0012] The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

[0013] Optionally, the method further includes:

[0014] Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

[0015] Optionally, the quality of the channel information is indicated by at least one of the following:

[0016] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0017] Optionally, the method further includes:

[0018] Send measurement data to the core network equipment; or

[0019] Send measurement quantities and measurement quality to the core network equipment, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0020] Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain.

[0021] Optionally, before measuring the echo signal of the received sensed signal to obtain channel information, the method further includes:

[0022] Receive the cooperative awareness notification sent by the core network device;

[0023] The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing.

[0024] Receive the cooperation notification sent by the core network device;

[0025] According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

[0026] Optionally, the echo signal of the received sensing signal includes:

[0027] Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or

[0028] The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

[0029] Optionally, the sensing signal configuration information includes at least one of the following:

[0030] Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

[0031] Optionally, measuring the echo signal of the received sensing signal to obtain channel information includes:

[0032] The echo signal of the received sensing signal is measured to obtain the first channel response;

[0033] Perform multipath removal processing on the first channel response to obtain the second channel response;

[0034] Obtain channel information based on the second channel response.

[0035] Optionally, the step of performing multipath removal processing on the first channel response to obtain the second channel response includes:

[0036] The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information.

[0037] Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum;

[0038] Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

[0039] Optionally, the step of processing the first channel response in the target domain to obtain the target spectrum corresponding to the target domain includes any one of the following:

[0040] If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain;

[0041] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains.

[0042] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

[0043] Optionally, the step of performing multipath removal processing on the target spectrum based on the measured quantity to obtain the second channel response includes any one of the following:

[0044] If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response;

[0045] If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains.

[0046] If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

[0047] Optionally, obtaining channel information based on the second channel response includes any one of the following:

[0048] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain.

[0049] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

[0050] Optionally, the step of compressing the second channel response based on the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain includes at least one of the following:

[0051] The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain.

[0052] The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain;

[0053] The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

[0054] This application also provides an information processing method applied to a core network device, including:

[0055] Receive channel information sent by at least one access network device;

[0056] Based on the channel information, the position and / or velocity of the sensed target are estimated;

[0057] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0058] Optionally, the method further includes:

[0059] Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0060] Optionally, the method further includes:

[0061] The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

[0062] Optionally, the quality of the channel information is indicated by at least one of the following:

[0063] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0064] Optionally, the method further includes:

[0065] Receive the measurement data sent by the at least one access network device; or

[0066] Receive measurement quantities and measurement quality sent by the at least one access network device, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0067] Wherein, the measured quantity is the estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain.

[0068] Optionally, before receiving channel information sent by at least one access network device, the method further includes:

[0069] Send a cooperative awareness notification to the at least one access network device;

[0070] Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing;

[0071] Send collaboration notifications to access network devices that participate in collaborative sensing.

[0072] Optionally, estimating the position and / or velocity of the perceived target based on the channel information includes at least one of the following:

[0073] Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information.

[0074] Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

[0075] This application embodiment also provides an access network device, which is a first access network device, including a memory, a transceiver, and a processor:

[0076] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0077] The echo signal of the received sensing signal is measured to obtain channel information;

[0078] The channel information is sent to the core network equipment via a transceiver;

[0079] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0080] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0081] The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0082] Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information;

[0083] The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

[0084] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0085] Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

[0086] Optionally, the quality of the channel information is indicated by at least one of the following:

[0087] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0088] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0089] Send measurement data to the core network equipment; or

[0090] Send measurement quantities and measurement quality to the core network equipment, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0091] Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain.

[0092] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0093] Receive the cooperative awareness notification sent by the core network device;

[0094] The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing.

[0095] Receive the cooperation notification sent by the core network device;

[0096] According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

[0097] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0098] Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or

[0099] The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

[0100] Optionally, the sensing signal configuration information includes at least one of the following:

[0101] Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

[0102] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0103] The echo signal of the received sensing signal is measured to obtain the first channel response;

[0104] Perform multipath removal processing on the first channel response to obtain the second channel response;

[0105] Obtain channel information based on the second channel response.

[0106] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0107] The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information.

[0108] Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum;

[0109] Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

[0110] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0111] If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain;

[0112] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains.

[0113] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

[0114] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0115] If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response;

[0116] If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains.

[0117] If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

[0118] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0119] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain.

[0120] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

[0121] Optionally, the processor is configured to read a computer program from the memory and perform at least one of the following operations:

[0122] The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain.

[0123] The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain;

[0124] The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

[0125] This application also provides a core network device, including a memory, a transceiver, and a processor:

[0126] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0127] Receive channel information sent by at least one access network device via a transceiver;

[0128] Based on the channel information, the position and / or velocity of the sensed target are estimated;

[0129] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0130] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0131] Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0132] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0133] The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

[0134] Optionally, the quality of the channel information is indicated by at least one of the following:

[0135] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0136] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0137] Receive the measurement data sent by the at least one access network device; or

[0138] Receive measurement quantities and measurement quality sent by the at least one access network device, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0139] Wherein, the measured quantity is the estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain.

[0140] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0141] Send a cooperative awareness notification to the at least one access network device;

[0142] Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing;

[0143] Send collaboration notifications to access network devices that participate in collaborative sensing.

[0144] Optionally, estimating the position and / or velocity of the perceived target based on the channel information includes at least one of the following:

[0145] Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information.

[0146] Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

[0147] This application embodiment also provides an information transmission device, applied to a first access network device, including:

[0148] The acquisition unit is used to measure the echo signal of the received sensing signal to obtain channel information;

[0149] The first transmitting unit is used to transmit the channel information to the core network equipment;

[0150] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0151] This application also provides an information processing apparatus, applied to core network equipment, including:

[0152] The first receiving unit is used to receive channel information sent by at least one access network device;

[0153] The processing unit is used to estimate the position and / or velocity of the sensed target based on the channel information.

[0154] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0155] This application also provides a processor-readable storage medium storing a computer program for causing the processor to perform the above-described method.

[0156] This application also provides a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the above-described method.

[0157] The beneficial effects of this application are:

[0158] The above scheme obtains channel information by measuring the echo signal of the received sensing signal. By sending the channel information to the core network equipment, the amount of channel data sent can be avoided to be too large, thereby reducing the signaling overhead of channel data transmission. Attached Figure Description

[0159] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0160] Figure 1 A diagram illustrating the communication architecture in single-base mode;

[0161] Figure 2 A diagram illustrating the communication architecture of a dual-base mode;

[0162] Figure 3 One of the flowcharts illustrating an embodiment of the information transmission method of this application;

[0163] Figure 4 A second flowchart illustrating the information transmission method according to an embodiment of this application;

[0164] Figure 5 One of the unit schematic diagrams of the information transmission device according to an embodiment of this application;

[0165] Figure 6 This is a structural diagram of an access network device according to an embodiment of this application;

[0166] Figure 7 A second schematic diagram of the unit of the information transmission device according to an embodiment of this application;

[0167] Figure 8 This is a structural diagram of the core network device in an embodiment of this application. Detailed Implementation

[0168] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0169] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0170] In this application's embodiments, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship. In this application's embodiments, the term "multiple" refers to two or more, and other quantifiers are similar.

[0171] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0172] The relevant concepts mentioned in this application will be briefly explained below.

[0173] Sensor-based integrated technology, as a key technology for 5G and future 6G, is being widely researched by the industry as an important topic within 3GPP. Its key lies in how to endow base stations with sensing capabilities, namely, sensing the surrounding environment, the distance, speed, angle, and position of the target to be sensed. Compared to traditional active positioning, sensor-based integrated positioning focuses more on passive positioning, meaning the target to be sensed does not require wearing a device. Instead, the signal emitted by the transmitting end is guided to the receiving end through physical phenomena such as reflection, scattering, and diffraction of the target, where it is processed accordingly. Depending on whether the transmitting and receiving ends are the same device, it can be divided into single-base mode and dual-base mode, the specific process of which is as follows... Figure 1 and Figure 2 As shown, solid lines represent the primary diameter, dashed lines represent multiple diameters, black vehicles represent the target to be sensed, and black solid dots represent the environment.

[0174] A common sensing approach involves obtaining channel responses from the sensing signals received by each base station (typically echo signals from the sensing channel), then estimating distance, velocity, and angle, and reporting this information to a sensing server (SensingFunction, SF). The SF then combines the distance, velocity, and angle measurements to calculate the location. However, this method has limited accuracy because the independent estimation of measurements does not consider the correlation between different channel responses, thus limiting the precision of parameter extraction.

[0175] To address the limited accuracy of parameter extraction, existing technologies directly report the time, frequency, and spatial channel responses of each base station to the SF (Site Detection). The SF uses the raw channel information and employs methods such as maximum likelihood to estimate the location of the sensed target, achieving optimal accuracy. However, this approach has the following drawback:

[0176] 1. Each base station needs to report channel data in the time domain, frequency domain, and spatial domain dimensions. The amount of data is too large, resulting in excessive signaling overhead, making it unusable in practice.

[0177] 2. Existing measurements suffer from multipath effects, which severely impact the fusion performance of SF.

[0178] The embodiments of this application are described below with reference to the accompanying drawings. The information transmission, processing method, apparatus, access network equipment, and core network equipment provided in the embodiments of this application can be applied to wireless communication systems. This wireless communication system can be a system employing fifth-generation (5G) mobile communication technology (hereinafter referred to as a 5G system). Those skilled in the art will understand that the 5G NR system is merely an example and not intended to be limiting.

[0179] This application provides an information transmission and processing method, apparatus, access network equipment, and core network equipment to solve the problem of high signaling overhead in the process of base station reporting channel data.

[0180] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0181] like Figure 3 As shown, this application embodiment provides an information transmission method, executed by a first access network device, including:

[0182] Step S301: Measure the echo signal of the received sensing signal to obtain channel information;

[0183] Optionally, the channel information mentioned in the embodiments of this application includes at least one of the following: time delay domain channel information, Doppler domain channel information, spatial domain channel information, time delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0184] Typically, the channel information should include at least one of the following: time-delay domain channel information, Doppler domain channel information, and spatial domain channel information. Further optionally, the signal information should also include at least one of the following: time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor. For example, when the channel information includes time-delay domain channel information, it may further include a time-delay domain compression factor; for example, when the channel information includes spatial domain channel information, it may further include a spatial domain compression factor; for example, when the channel information includes Doppler domain channel information, it may further include a Doppler domain compression factor.

[0185] Optionally, the compression factor mentioned in this embodiment can be understood as the compression factor (also called the compression comb factor) used to further compress channel information through undersampling, compressed sensing (utilizing channel sparsity), etc. Through this compression, the dimensionality of the channel information will be further reduced. Optionally, the compression factors corresponding to different domains can be different. It should be noted that after undersampling, in addition to the compression factor, the initial indexes of different domains can also be reported together, such as the initial subcarrier index, initial antenna index, initial symbol or time slot index.

[0186] Optionally, the time delay domain channel information represents the channel information corresponding to the time delay domain, the Doppler domain channel information represents the channel information corresponding to the Doppler domain, and the spatial domain channel information represents the channel information corresponding to the spatial domain.

[0187] Optionally, the time delay domain is embodied in the subcarrier dimension, and in this embodiment, the time delay domain can be replaced by the symbol or time slot dimension; the spatial domain is embodied in the antenna dimension, which can be understood as the angle domain, or the spatial domain includes the angle domain, and in this embodiment, the spatial domain can be replaced by the angle domain or the antenna dimension; the Doppler domain is embodied in the symbol or time slot dimension, which can be understood as the velocity domain, or the Doppler domain includes the velocity domain, and in this embodiment, the Doppler domain can be replaced by the velocity domain or the symbol or time slot dimension.

[0188] Step S302: Send the channel information to the core network equipment;

[0189] It should be noted that channel information is obtained by measuring the echo signal based on the received sensing signal. By sending the channel information to the core network equipment, the amount of channel data sent can be avoided to be too large, thereby reducing the signaling overhead of channel data transmission.

[0190] It should be noted that the embodiments of this application are applicable to sensing communication in single-base mode and dual-base mode. The sensing channel models in different modes are described below.

[0191] A1. Single-target multipath sensing communication, which means that there is only one sensing target in this case.

[0192] Specifically, this includes the following sensing channel models:

[0193] A11, Single-base mode

[0194] In this case, there is only one sensing target and one access network device, which transmits and receives signals.

[0195] For example, if base station p transmits and base station p receives, and the transmit / receive antenna configuration is 1 transmit and M receive, after processing the echo signal of the sensed signal in three domains (angle domain, velocity domain, and time delay domain), the channel response caused by one sensed target can be expressed by Equation 1 as follows:

[0196] Formula 1

[0197] Among them, H p (k,n,m) represents the channel response corresponding to the k-th subcarrier, the n-th orthogonal frequency division multiplexing (OFDM) symbol, and the m-th antenna in single-base mode; k represents the subcarrier index; n represents the OFDM symbol index; m represents the antenna index; d represents the antenna spacing; l represents the multipath index; L represents the total number of paths; α l Represents the complex fading coefficient of the l-th path; λ represents the velocity of the l-th path connecting the sensing target and the base station p along the line connecting them; λ represents the carrier wavelength; Δf scs θ represents the subcarrier spacing (SCS); l This represents the angle between the sensing target and the l-th path of the receiving base station; f represents the radial velocity of the sensing target and the base station p in the l-th radial direction; c Indicates the signal carrier frequency; W p (k,n,m) represents the noise in the echo signal received on the k-th subcarrier, n-th symbol, and m-th antenna of base station p.

[0198] For example, if base station p transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in two domains (angle domain, velocity domain, and time delay domain), for example, taking angle domain and velocity domain processing as an example, the channel response caused by one sensed target can be expressed by Equation 2:

[0199] Formula 2

[0200] Among them, H p (n,m) represents the channel response corresponding to the nth orthogonal frequency division multiplexing (OFDM) symbol and the mth antenna in single-base mode; n represents the OFDM symbol index; m represents the antenna index; d represents the antenna spacing; l represents the multipath index; L represents the total number of paths; α l λ represents the complex fading coefficient of the l-th path; λ represents the carrier wavelength; θ l This represents the angle between the sensing target and the l-th path of the receiving base station; W represents the radial velocity of the sensing target and the base station p in the l-th radial direction; p (n,m) represents the noise in the echo signal received on the m-th antenna of the nth symbol of base station p.

[0201] For the specific implementation of the case where the angle domain and time delay domain, or the time delay domain and velocity domain are processed, it is similar to Formula 2 (that is, if no domain needs to be processed, the relevant parameters of that domain in Formula 1 can be deleted), and will not be elaborated here.

[0202] For example, if base station p transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in one domain (angle domain, velocity domain, or time delay domain), for example, taking angle domain processing, the channel response caused by one sensed target can be expressed by Equation 3 as follows:

[0203] Formula 3

[0204] Among them, H p (m) represents the channel response corresponding to the m-th antenna in single-base mode; m represents the antenna index; d represents the antenna spacing; l represents the multipath index; L represents the total number of paths; α l λ represents the complex fading coefficient of the l-th path; λ represents the carrier wavelength; θ l W represents the angle between the sensing target and the l-th path of the receiving base station; p (m) represents the noise in the echo signal received on the m-th antenna of base station p.

[0205] The specific implementation for cases involving time delay or velocity domains is similar to Formula 3 (i.e., if no domain needs to be processed, simply delete the relevant parameters for that domain in Formula 1), and will not be elaborated further here.

[0206] A12, Dual-base mode

[0207] In this scenario, there is only one sensing target and two access network devices: one transmitting the signal and the other receiving the signal.

[0208] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, then after processing the echo signal of the sensed signal in three domains (angle domain, velocity domain, and time delay domain), the channel response caused by a single sensed target can be expressed by Equation 4:

[0209] Formula 4

[0210]

[0211] Among them, H pq (k,n,m) represents the channel response corresponding to the k-th subcarrier, the n-th orthogonal frequency division multiplexing (OFDM) symbol, and the m-th antenna in dual-base mode; This represents the velocity of the k-th path between the sensing target and the base station q along the line connecting them; W represents the radial velocity of the sensing target and the base station q in the l-th radial direction; pq (k,n,m) represents the noise in the echo signal received on the k-th subcarrier, n-th symbol, and m-th antenna of base station q.

[0212] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in two domains (angle domain, velocity domain, and time delay domain), for example, taking angle domain and velocity domain processing as an example, the channel response caused by a single sensed target can be expressed by Equation 5:

[0213] Formula 5

[0214] Among them, H pq (n,m) represents the channel response corresponding to the nth orthogonal frequency division multiplexing (OFDM) symbol and the mth antenna in dual-base mode, W pq (n,m) represents the noise in the echo signal received on the m-th antenna of the base station q, representing the nth symbol.

[0215] For the specific implementation of the case where the angle domain and time delay domain, or the time delay domain and velocity domain are processed, it is similar to Formula 5 (that is, if no domain needs to be processed, the relevant parameters of that domain in Formula 4 can be deleted), and will not be elaborated here.

[0216] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in one domain (angle domain, velocity domain, or time delay domain), for example, taking angle domain processing, the channel response caused by a single sensed target can be expressed by Equation Six:

[0217] Formula 6

[0218] Among them, H pq (m) represents the channel response corresponding to the m-th antenna in bistatic mode, W pq (m) represents the noise in the echo signal received on the m-th antenna of base station q.

[0219] The specific implementation for cases involving time delay or velocity domains is similar to Formula 6 (i.e., if no domain needs to be processed, simply delete the relevant parameters for that domain in Formula 4), and will not be elaborated further here.

[0220] A2. Multi-target multipath perception, which means that there are only multiple sensing targets in this case.

[0221] Specifically, this includes the following sensing channel models:

[0222] A21, Single-base mode

[0223] In this case, there are only multiple sensing targets and one access network device that transmits and receives signals.

[0224] For example, if base station p transmits and base station p receives, and the transmit / receive antenna is configured as 1 transmit M receive, then after processing the echo signal of the sensed signal in three domains (angle domain, velocity domain, and time delay domain), the channel response caused by G sensed targets can be expressed by Equation 7:

[0225] Formula 7

[0226]

[0227] Among them, H p (k,n,m) represents the channel response corresponding to the k-th subcarrier, the n-th orthogonal frequency division multiplexing (OFDM) symbol, and the m-th antenna in single-base mode; g represents the sensing target index; G represents the number of sensing targets; l g Indicates a multipath index; L g Indicates the total diameter; The l-th term represents the sensing target and the base station p. g The propagation delay of the stripe; The lth generation represents the sensing target and the receiving base station g Angle of strip diameter; This indicates that the perceived target and base station p are in the lth... g Radial velocity in the direction of the strip diameter.

[0228] For example, if base station p transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in two domains (angle domain, velocity domain, and time delay domain), for example, taking angle domain and velocity domain processing as an example, the channel response caused by G sensed targets can be expressed by Equation 8:

[0229] Formula 8

[0230] Among them, H p (n,m) represents the channel response corresponding to the nth orthogonal frequency division multiplexing (OFDM) symbol and the mth antenna in single-base mode.

[0231] For the specific implementation of the case where the angle domain and time delay domain, or the time delay domain and velocity domain are processed, it is similar to Formula 8 (that is, if no domain needs to be processed, the relevant parameters of that domain in Formula 7 can be deleted), and will not be elaborated here.

[0232] For example, if base station p transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in one domain (angle domain, velocity domain, or time delay domain), for example, taking angle domain processing, the channel response caused by G sensed targets can be expressed by Equation Nine:

[0233] Formula 9

[0234] Among them, H p (m) represents the channel response corresponding to the m-th antenna in single-base mode.

[0235] The specific implementation for cases involving time delay or velocity domains is similar to Formula 9 (i.e., if no domain needs to be processed, simply delete the relevant parameters for that domain in Formula 7), and will not be elaborated further here.

[0236] A22, Dual-base mode

[0237] In this case, there are only multiple sensing targets and two access network devices, one of which transmits the signal and the other receives the signal.

[0238] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit M receive, and the echo signal of the sensed signal is processed in three domains (angle domain, velocity domain, and time delay domain), then the channel response caused by G sensed targets can be expressed by Equation 10:

[0239] Formula 10

[0240]

[0241] Among them, H pq (k,n,m) represents the channel response corresponding to the k-th subcarrier, the n-th orthogonal frequency division multiplexing (OFDM) symbol, and the m-th antenna in dual-base mode; The l-th term represents the sensing target and the base station q. gThe propagation delay of the stripe; Indicates the sensing target and base station q at the lth g Radial velocity in the direction of the strip diameter.

[0242] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit and M receive, and the echo signal of the sensed signal is processed in two domains (angle domain, velocity domain, and time delay domain), for example, taking angle domain and velocity domain processing as an example, the channel response caused by G sensed targets can be expressed by Equation 11:

[0243] Formula 11

[0244] Among them, H pq (n,m) represents the channel response corresponding to the nth orthogonal frequency division multiplexing (OFDM) symbol and the mth antenna in dual-base mode.

[0245] For the specific implementation of the case where the angle domain and time delay domain, or the time delay domain and velocity domain are processed, it is similar to Equation 11 (that is, if no domain needs to be processed, the relevant parameters of that domain in Equation 10 can be deleted), and will not be elaborated here.

[0246] For example, if base station q transmits and base station p receives, and the transmit / receive antennas are configured as 1 transmit M receive, and the echo signal of the sensed signal is processed in one domain (angle domain, velocity domain, or time delay domain), for example, taking angle domain and velocity domain processing as an example, the channel response caused by G sensed targets can be expressed by Equation Twelve:

[0247] Formula 12.

[0248] Among them, H pq (m) represents the channel response corresponding to the m-th antenna in bibase mode.

[0249] The specific implementation for cases handled in the time delay domain or velocity domain is similar to that in Formula 12 (i.e., if no domain needs to be processed, simply delete the relevant parameters for that domain in Formula 10), and will not be elaborated further here.

[0250] It should be noted that, for clarity, this application embodiment only provides a single-dimensional angle. If the azimuth angle of arrival (AOA) and zenith angle of arrival (ZOA) are involved, they can be freely extended. This application embodiment will not describe them one by one. That is, this application embodiment is also applicable to channels with two or more dimensions.

[0251] It should be noted that for Formulas 1, 4, 7, and 10 above, if each access network device receiving signals directly reports channel data, the data volume is k*m*n; for Formulas 2, 5, 8, and 11 above, if each access network device receiving signals directly reports channel data, the data volume is m*n; for Formulas 3, 6, 9, and 12 above, if each access network device receiving signals directly reports channel data, the data volume is n. The embodiments of this application address the problem of excessively large reported data volumes by providing a method for multipath cancellation of channel information.

[0252] First, it needs to be clarified which domains the above formulas one through twelve apply to, and the resulting channel information will then be applied to those domains. For example, if formula one is used, the final channel information determined by this application includes: time delay domain channel information (i.e., the channel information corresponding to the time delay domain), Doppler domain channel information (i.e., the channel information corresponding to the Doppler domain), and spatial domain channel information (i.e., the channel information corresponding to the spatial domain). If formula two is used, the final channel information determined by this application includes: Doppler domain channel information and spatial domain channel information; other cases are similar to the examples above and will not be illustrated further here.

[0253] Optionally, in one implementation, the specific implementation of measuring the echo signal of the received sensing signal to obtain channel information includes the following steps 3011, 3012, and 3013:

[0254] Step 3011: Measure the echo signal of the received sensing signal to obtain the first channel response;

[0255] It should be noted that, for example, the first channel response can be the channel response indicated by any one of Formulas 1 to 12 above.

[0256] Step 3012: Perform multipath removal processing on the first channel response to obtain the second channel response;

[0257] It should be noted that this step is for multipath removal, and the resulting second channel response contains only one path, which can eliminate the effects of multipath.

[0258] Optionally, in one implementation, the multipath removal process performed on the first channel response to obtain the second channel response includes the following steps 30121, 30122, and 30123:

[0259] Step 30121: Process the first channel response in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information.

[0260] Optionally, in one implementation, the step of processing the first channel response in the target domain to obtain the target spectrum corresponding to the target domain includes any one of the following:

[0261] B11. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

[0262] It should be noted that in this case, the spatial domain, Doppler domain, and time delay domain need to be processed. Specifically, each domain is processed sequentially. That is, the result of processing the third domain is used to process the fourth domain, and the result of processing the fourth domain is used to process the fifth domain. The processing order of the three domains is not limited in this application, and any permutation and combination of the three domains is within the protection scope of the embodiments of this application.

[0263] For example, taking the third domain as the angle domain, the fourth domain as the velocity domain, and the fifth domain as the time delay domain as an example (the implementation of other permutations and combinations is similar and will not be repeated here), the specific processing procedure is explained as follows.

[0264] For example, taking the first channel response as expressed by Equation 1, we perform an angle-domain Fast Fourier Transform (FFT) on the first channel response according to Equation 13:

[0265] Formula Thirteen

[0266] Among them, G p (k,n,θ) represents the second processing result, and θ represents the angle.

[0267] According to Formula 14, perform a velocity domain FFT transform on the second processing result:

[0268] Formula Fourteen

[0269] Among them, G p (k,v,θ) represents the third processing result, where v represents the speed.

[0270] According to Formula 15, perform a time-delay domain FFT transform on the third processing result:

[0271] Formula 15

[0272] Among them, Gp (τ,v,θ) represents the target spectrum, and τ represents the time delay.

[0273] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 1, and will not be repeated here.

[0274] B12. If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed to obtain the target spectrum corresponding to the target domain.

[0275] It should be noted that in this case, only one of the spatial, Doppler, and time-delay domains needs to be processed; for example, the specific implementation for processing only the angle domain (the implementation methods for other domains are similar and will not be elaborated here) can be as follows:

[0276] For example, taking the first channel response as expressed by Equation 3, the first channel response is subjected to an angle-domain Fast Fourier Transform (FFT) according to Equation 16:

[0277] Formula 16

[0278] Among them, G p (θ) represents the target spectrum.

[0279] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 3, and will not be repeated here.

[0280] B13. If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains.

[0281] It should be noted that in this case, two of the spatial domain, Doppler domain, and time delay domain need to be processed. Specifically, the two domains are processed sequentially, that is, the result of processing the first domain is used to process the second domain. As for which two domains are selected and the order of processing the two domains, this application does not limit the scope of protection of the two domains in any arrangement and combination of the two domains.

[0282] For example, taking the first domain as the angle domain and the second domain as the velocity domain (the implementation of other domain combinations and permutations is similar and will not be elaborated here), the specific processing procedure is explained as follows:

[0283] For example, taking the first channel response as expressed by Equation 2, we perform an angle-domain Fast Fourier Transform (FFT) on the first channel response according to Equation 17:

[0284] Formula 17

[0285] Among them, G p (n,θ) represents the first processing result.

[0286] According to Formula 18, perform a velocity domain FFT transform on the first processed result:

[0287] Formula 18

[0288] Among them, G p (v,θ) represents the target spectrum.

[0289] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 2, and will not be repeated here.

[0290] Step 30122: Obtain the measurement quantity corresponding to the objective function value in the target spectrum. The measurement quantity includes at least one of the following: time delay measurement quantity (i.e., measurement quantity corresponding to the time delay domain), Doppler measurement quantity (i.e., measurement quantity corresponding to the Doppler domain), and spatial domain measurement quantity (i.e., measurement quantity corresponding to the spatial domain).

[0291] It should be noted that after obtaining the target spectrum, each function value in the spectrum corresponds to a set of measurements. Utilizing the sparsity of the time, frequency, and spatial domains, a detection algorithm determines the function value corresponding to the perceived target. Each function value corresponds to a set of estimated delay, velocity, and angle values, which are the corresponding delay, velocity, and angle measurements. It's important to note that if the detection algorithm detects multiple possible function values ​​or targets, a single target can report multiple sets of candidate delay, velocity, and angle measurements. Subsequently, the core network equipment aggregates the reports from multiple access network devices to filter out the true target.

[0292] Optionally, in one implementation, the method further includes:

[0293] Send measurement data to the core network equipment; or

[0294] Send measurement quantities and measurement quality to the core network equipment, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0295] Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain.

[0296] It should be noted that, for example, if the channel information determined in this application includes: time delay domain channel information, Doppler domain channel information, and spatial domain channel information, then the target domain includes: time delay domain, Doppler domain, and spatial domain; for example, if the channel information determined in this application includes: time delay domain channel information and Doppler domain channel information, then the target domain includes: time delay domain and Doppler domain; other cases are similar and will not be elaborated here.

[0297] It should be noted that the access network device reports the measurement data to the core network device, which can then assist the core network device in calculating the location of the sensing target. By reporting the measurement data, the search range can be reduced and the location calculation speed can be improved.

[0298] Step 30123: Based on the measured quantity, perform multipath removal processing on the target spectrum to obtain the second channel response;

[0299] Optionally, taking two-dimensional time delay-velocity as an example, there are 5 spectral peaks before windowing, but only one spectral peak after windowing, thereby removing the influence of multipath and ensuring that the obtained channel response reflects only one path.

[0300] Optionally, in one implementation, the step of performing multipath removal processing on the target spectrum based on the measured quantity to obtain the second channel response includes one of the following:

[0301] B21. If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

[0302] It should be noted that in this case, the spatial domain, Doppler domain, and time delay domain need to be processed. Specifically, each domain is processed sequentially. That is, the result of processing the eighth domain is used to process the ninth domain, and the result of processing the ninth domain is used to process the tenth domain. The processing order of the three domains is not limited in this application, and any permutation and combination of the three domains is within the protection scope of the embodiments of this application.

[0303] For example, taking the eighth domain as the time delay domain, the ninth domain as the velocity domain, and the tenth domain as the angle domain as an example (the implementation of other permutations and combinations is similar and will not be repeated here), the specific processing procedure is explained as follows.

[0304] For example, taking the first channel response as represented by Formula 1, we can use Formulas 19, 20, and 21 for processing:

[0305] Formula 19

[0306] Among them, U p (k,v,θ) represents the result of the fifth processing; G p (τ,v,θ) represents the target spectrum, τ win τ represents the length of the processing window corresponding to the delay domain. sel This represents the measurement quantity corresponding to the time delay domain.

[0307] Formula 20

[0308] Among them, U p (k,n,θ) represents the result of the sixth processing, v win v represents the length of the processing window corresponding to the velocity domain. sel This represents the measured quantity corresponding to the velocity domain.

[0309] Formula 21

[0310] Among them, U p (k,n,m) represents the second channel response, θ win θ represents the length of the processing window corresponding to the angular domain. sel This represents the measured quantity corresponding to the angular domain.

[0311] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 1, and will not be repeated here.

[0312] It should be noted that the target spectrum is processed by the processing window and measurement quantity corresponding to each domain to remove the multipath effect. The length of the processing window is related to the resolution (inverse of bandwidth) and the degree of dispersion of the first path. Since the dispersion degree of the first path may be different in terms of time delay, angle and velocity, the smaller the window length, the more concentrated the signal and the better the compression effect.

[0313] B22. If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response;

[0314] It should be noted that in this case, only one domain is used to process the target spectrum. The domain used for processing can be any one of the spatial domain, Doppler domain, and time delay domain.

[0315] For example, taking angle domain processing as an example (the implementation of other domain processing is similar and will not be repeated here), the specific processing procedure is explained as follows.

[0316] Taking the first channel response as expressed by Formula 3 as an example, the second channel response is obtained by processing it using Formula 22:

[0317] Formula 22

[0318] Among them, U p (m) represents the second channel response.

[0319] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 3, and will not be repeated here.

[0320] B23. If the measured quantity includes two of the following: time delay measurement, Doppler measurement, and spatial measurement, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measured quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measured quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains.

[0321] It should be noted that in this case, two of the spatial domain, Doppler domain, and time delay domain need to be processed. Specifically, the two domains are processed sequentially, that is, the result of the sixth domain processing is used for the seventh domain processing. The processing order of the two domains is not limited in this application, and any permutation and combination of the two domains is within the protection scope of the embodiments of this application.

[0322] For example, taking the sixth domain as the angle domain and the seventh domain as the velocity domain (the processing of other domains and the implementation of permutation and combination methods are similar and will not be repeated here), the specific processing process is explained as follows.

[0323] For example, taking the first channel response as represented by Formula 2, the second channel response can be obtained by processing it using Formulas 23 and 24 respectively:

[0324] Formula 23

[0325] Among them, U p (v,m) represents the result of the fourth processing; G p (v,θ) represents the target spectrum.

[0326] Formula 24

[0327] Among them, Up (n,m) represents the second channel response.

[0328] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 2, and will not be repeated here.

[0329] Optionally, in one implementation, the method further includes:

[0330] The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0331] Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information.

[0332] It should be noted that in this case, the length of the processing window corresponding to different domains can be understood as being indicated by the core network device to the access network device; specifically:

[0333] In the first scenario, the core network device can directly indicate the perception accuracy requirement level to the access network device. The access network device then looks up the relationship table between the perception accuracy requirement level and the length of the processing window based on the perception accuracy requirement level to determine the length of the processing window corresponding to each domain. Optionally, the relationship table between the perception accuracy requirement level and the length of the processing window is agreed upon by the protocol or configured through higher-layer signaling.

[0334] For example, Table 1 shows an example of a table showing the relationship between the required level of perception accuracy and the length of the processing window.

[0335] Table 1. Relationship between Sensing Accuracy Requirement Level and Processing Window Length

[0336]

[0337]

[0338] In the second scenario, the core network equipment can instruct the access network equipment on parameters such as the bandwidth, duration, antenna aperture, and resolution of the sensing signal. The access network equipment then determines the length of the processing window corresponding to each domain based on the instructions from the core network equipment and the actual received signal.

[0339] For example, based on the sensing signal bandwidth B (in Hz), the sensing resolution a corresponding to the time delay domain. τ (Unit: seconds) Determines the length x of the processing window corresponding to the delay domain. For example: x = 2X τ / (B*a τ ), Xv This represents the window parameter scaling factor corresponding to the time delay domain.

[0340] For example, based on the sensing signal bandwidth A (in Hz), the sensing resolution a corresponding to the angle domain. θ (Unit: radians) Determines the length y of the processing window corresponding to the angle domain. For example: y = 2X θ / (A*a θ ), X θ This represents the scaling factor of the window parameter corresponding to the angle domain.

[0341] For example, based on the sensing signal bandwidth T (in Hz), the sensing resolution a corresponding to the velocity domain v (Unit: meters per second) Determine the length z of the processing window corresponding to the velocity domain. For example: z = 2X v / (T*a v ), X v This represents the window parameter scaling factor corresponding to the velocity domain.

[0342] Step 3013: Obtain channel information based on the second channel response.

[0343] Optionally, in one implementation, obtaining channel information based on the second channel response includes one of C11 and C12:

[0344] C11. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

[0345] Optionally, during processing, the second channel response also needs to be compressed based on the measurement quantity corresponding to the thirteenth domain.

[0346] Optionally, in one implementation, the step of compressing the second channel response based on the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain includes at least one of C111, C112, and C113:

[0347] C111. Compress the second channel response according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain;

[0348] This can be understood as follows: the second channel response is compressed based on the measurements corresponding to the time delay domain and the spatial domain, respectively, to obtain the channel information corresponding to the Doppler domain.

[0349] For example, taking the first channel response as expressed by Equation 1, the method for obtaining the channel information corresponding to the Doppler domain can be found in Equation 25:

[0350] Formula 25

[0351] in, This represents the channel information corresponding to the Doppler domain.

[0352] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 1, and will not be repeated here.

[0353] C112. Compress the second channel response according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain;

[0354] This can be understood as follows: the second channel response is compressed based on the measurements corresponding to the Doppler domain and the spatial domain, respectively, to obtain the channel information corresponding to the time delay domain.

[0355] For example, taking the first channel response as represented by Equation 1, the method for obtaining the channel information corresponding to the time delay domain can be found in Equation 26:

[0356] Formula 26

[0357] in, This represents the channel information corresponding to the time delay domain.

[0358] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 1, and will not be repeated here.

[0359] C113. Compress the second channel response according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain;

[0360] This can be understood as follows: the second channel response is compressed based on the measurements corresponding to the time delay domain and the Doppler domain, respectively, to obtain the channel information corresponding to the spatial domain.

[0361] For example, taking the first channel response as represented by Equation 1, the method for obtaining the channel information corresponding to the spatial domain can be found in Equation 27:

[0362] Formula 27

[0363] in, This represents the channel information corresponding to the spatial domain.

[0364] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 1, and will not be repeated here.

[0365] C12. If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain.

[0366] Optionally, during processing, the second channel response also needs to be compressed based on the measurement corresponding to the eleventh domain.

[0367] For example, taking the first channel response as represented by Formula 2, if the eleventh domain is the spatial domain and the twelfth domain is the Doppler domain, the method for obtaining the channel information corresponding to the Doppler domain can be found in Formula 28:

[0368] Formula 28

[0369] If the eleventh domain is the Doppler domain and the twelfth domain is the spatial domain, the method for obtaining the channel information corresponding to the spatial domain can be found in Formula 29:

[0370] Formula 29

[0371] It should be noted that the specific implementation of the first channel response expressed by other formulas is similar to the specific implementation of the case expressed by Formula 2, and will not be repeated here.

[0372] It should also be noted that if only one domain is compressed, the second channel response obtained by multipath removal is the channel information corresponding to that domain. In other words, if only one domain is processed, the second channel response is the channel information.

[0373] Optionally, in one implementation, the method further includes:

[0374] Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

[0375] Optionally, the quality of the channel information is indicated by at least one of the following:

[0376] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0377] It should be noted that the quality of channel information in different domains can be indicated by different quality levels.

[0378] Alternatively, the length of the processing window can be represented by a real number, for example, in the following two forms:

[0379] Form 1, delay window length: 3; angle window length: 6; velocity window length: 12; the unit for Form 1 is sampling points.

[0380] Form 2, Delay window length: B; Angle window length: A; Velocity window length: E; Form 2 is in the form of window length levels, for example, as shown in Table 2, there are a total of 5 levels.

[0381] Table 2. Relationship between window length levels and processing window length

[0382] Window length levels A B C D E Window length 1～10 11～20 21～30 31～40 >41

[0383] Optionally, the signal-to-interference-plus-noise ratio (SIR) within the processing window represents the ratio of the first diameter power to (the remaining diameter power plus noise power) within the window range. It can also reflect the degree of information extraction within the window, and its unit can be dimensionless or dB.

[0384] It should be noted that by indicating the quality of channel information, core network equipment can be informed of the quality of the acquired data, thereby determining the reliability level of the obtained sensing location.

[0385] Optionally, in one implementation, before measuring the echo signal of the received sensed signal to obtain channel information, the method further includes:

[0386] Receive the cooperative awareness notification sent by the core network device;

[0387] The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing.

[0388] Receive the cooperation notification sent by the core network device;

[0389] According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

[0390] It should be noted that in the case of single-base, the first access network device receives a cooperation notification, sends a sensing signal to the sensing target, and receives the echo signal of the sensing signal; while in the case of dual-base, the first access network device and the second access network device respectively receive a cooperation notification, the second access network device sends a sensing signal to the sensing target according to the cooperation notification, and the first access network device receives the echo signal of the sensing signal according to the cooperation notification.

[0391] Optionally, in the case of a single-base system, the first access network device does not need to send sensing signal configuration information and can directly receive the echo signal of the sensing signal based on the sensing signal configuration information; while in the case of a dual-base system, the first access network device needs to receive the sensing signal configuration information sent by the second access network device, and receive the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

[0392] Optionally, in one implementation, the sensing signal configuration information includes at least one of the following:

[0393] Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency comb (COMB) factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

[0394] Optionally, the location of the access network device transmitting the sensing signal can be the location coordinates in the Global Coordinate System (GCS) or the location coordinates in the Local Coordinate System (LCS); Optionally, the location of the antenna transmitting the sensing signal can be the location coordinates in the GCS or the location coordinates in the LCS.

[0395] It should be noted that the receiving end receives the echo signal of the sensing signal through the sensing signal configuration information, which can ensure accurate signal reception.

[0396] Optionally, after receiving channel information, the core network device estimates the position and / or velocity of the sensed target based on the channel information. Specifically, this includes at least one of the following:

[0397] D11. Based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information, the position of the sensed target is estimated.

[0398] Optionally, for each sensed target of each access network device, the specific method for location estimation is as follows:

[0399] The location of the perceived target can be determined using Formula 30:

[0400] Formula 30

[0401]

[0402] in,

[0403]

[0404] τ s =|pos s -posp | / c;

[0405] For location search vectors; For velocity search vectors; This represents the location coordinates of the access network devices; P is the number of access network devices receiving signals. This represents the time-delay domain channel information corresponding to the g-th sensing target; Let M represent the spatial channel information corresponding to the g-th sensing target; M represents the total number of receiving antennas; K represents the total number of subcarriers; and c represents the speed of light in air.

[0406] D12. Based on the position search vector, velocity search vector, and Doppler domain channel information, the velocity of the sensed target is estimated.

[0407] Optionally, for each sensed target of each access network device, the specific method for speed estimation is as follows:

[0408] The velocity of the perceived target is determined using formula 31:

[0409] Formula 31

[0410]

[0411] in, m = 1:M; v s =(pos s -pos p ) T v s ; This represents the Doppler domain channel information corresponding to the g-th sensing target; N represents the total number of OFDM symbols; Let be the velocity search vector corresponding to the g-th sensing target.

[0412] It should also be noted that different access network devices may determine different numbers of sensing targets through detection algorithms.

[0413] It should be noted that when the access network device reports the measurement, the core network device needs to perform a grid search for each group of candidate delay, speed, angle measurements and corresponding channel information. The search grid uses the position and speed calculated based on the initial delay, speed, and angle as the grid center point, and searches with a certain step size. The search range can be set according to the variance of the reported delay, angle, and speed.

[0414] It should be noted that the access network device mentioned in this application embodiment is, for example, a base station; the core network device is a network element on the core network side used for sensing services, such as an SF.

[0415] The following examples illustrate the specific implementation of this application's embodiments, using channel information corresponding to reporting delay, speed, and angle, and base station-SF communication as examples.

[0416] Application Scenario 1: Single target, single base station (taking base station P as an example)

[0417] The specific implementation process on the base station side includes:

[0418] Step 11: Receive the collaboration-aware notification sent by SF;

[0419] Step 12: Send status feedback information to SF, which is used to indicate whether the base station participates in cooperative sensing;

[0420] Step 13: Receive the cooperation notification sent by SF and send a sensing signal;

[0421] It should be noted that this cooperation notification is sent by SF to the base station after confirming that the base station is participating in the cooperation.

[0422] Step 14: The base station receives the echo signal of the sensing signal and obtains channel information;

[0423] Specifically, the steps include the following:

[0424] Step 14.1: Perform three-domain processing on the first channel response expressed by Formula 1 to obtain the target spectrum;

[0425] Specifically, each function value in the target spectrum corresponds to a set of time delay, velocity, and angle. Utilizing the sparsity of the time, frequency, and spatial domains, the detection algorithm determines the function value corresponding to the perceived target. Each function value corresponds to a set of time delay, velocity, and angle measurements.

[0426] It should be noted that if the detection algorithm finds multiple possible function values ​​or targets, a single target can also report multiple sets of candidate measurements for time delay, velocity, and angle. The corresponding sensing signal receiver will then execute step 14.2 multiple times. Subsequently, the SF (Security Detection System) aggregates the results reported by multiple base stations to filter out the true target.

[0427] Step 14.2: Based on the measurements obtained above, perform windowing and three-domain inverse transformation to convert the three-domain spectrum (i.e., the target spectrum) into a second channel response that has removed the multipath effects.

[0428] Step 14.3: Determine the corresponding channel information based on the second channel response;

[0429] Optionally, this step involves constructing channel information corresponding to time delay, velocity, and angle. The principle is to eliminate the phase deviations in velocity, time delay, and angle between different symbols, subcarriers, and antennas, thereby enabling superposition and merging to improve the signal-to-noise ratio.

[0430] It should be noted that for three-dimensional compression, the estimates of the other two dimensions need to be compensated in order to achieve the effect of combining symbol, antenna, and subcarrier signals.

[0431] Step 14.4: Each base station reports to SF the measurement quantities corresponding to delay, speed, and angle, the measurement quality, the channel information in the delay domain, the channel information in the Doppler domain, the channel information in the spatial domain, and the quality corresponding to the channel information.

[0432] It should be noted that the delay, velocity, and angle are real numbers and can be represented in binary. Their granularity is 1 / 2^21 of the sampling resolution (1 / B, 1 / T, 1 / A) for delay, angle, and velocity, where B is the signal bandwidth, T is the total symbol length, and A is the antenna element aperture size. Their ranges can be arbitrarily set, such as delay INTEGER(1..1970049), angle INTEGER(1..1970049), and velocity INTEGER(1..1970049). The channel information corresponding to delay, velocity, and angle, being complex numbers, can be represented in binary for each element in the vector, with the granularity set. This will not be elaborated further here. It is important to note that the dimensions of the channel information can be of the following types:

[0433] Format 1: Delay domain channel information dimension: 1*4096, spatial domain channel information dimension: 1*8, Doppler domain channel information dimension: 1*100;

[0434] Format 2: Delay domain channel information dimension: 1*2417, Spatial domain channel information dimension: 1*5, Doppler domain channel information dimension: 1*41;

[0435] Form 3: Delay domain channel information dimension: 1*1024, spatial domain channel information dimension: 1*4, Doppler domain channel information dimension: 1*20, which corresponds to a time delay domain (subcarrier dimension) compression comb factor of 4, a spatial domain (antenna dimension) compression comb factor of 2, and a Doppler domain (symbol or time slot dimension) compression comb factor of 5.

[0436] Forms 2 and 3 indicate that channel information is further compressed through undersampling, compressed sensing (utilizing channel sparsity), etc., thereby further reducing the dimensionality. In this case, in addition to reporting channel information, the compression comb factor of each domain also needs to be reported, which is included in the channel information.

[0437] It should be noted that after undersampling, in addition to the compression factor, the initial indexes of different domains can also be reported together. For example, the initial subcarrier index ID=3 represents reporting subcarriers 3, 7, 11...2046, the initial antenna index ID=2 represents reporting antennas 2 and 4, and the initial symbol or time slot index ID=4 represents reporting symbols 4, 9, 14...99.

[0438] The final reporting overhead is 2*(4096+8+100)=8408 bits, while the overhead of directly reporting the entire channel is 2*(4096*8*100)=6553600 bits. The former is much smaller than the latter.

[0439] The main implementation process on the SF side includes:

[0440] Step 21: Send a notification to each base station to perform cooperative sensing and sensing mode (single base station). Here, the transmitting and receiving base station p is in the sensing base station set. The sensing base station set is selected based on prior information such as the approximate distance between the sensing target and each base station.

[0441] Step 22: Receive status feedback information sent by each base station in the sensing base station set, determine the base stations that can cooperate in sensing based on the status feedback information, and send cooperation notifications to each base station that can cooperate in sensing to trigger the sensing process.

[0442] Optionally, SF may also notify each base station of the type identifier of the cooperative sensing mode (e.g., channel data fusion or measurement data fusion), the required sensing accuracy level (e.g., low-precision sensing, medium-precision sensing or high-precision sensing) or the specific value of the sensing accuracy.

[0443] Step 23: The perception server uses cost search to estimate the position and / or velocity of the perceived target, and determines the position and / or velocity of the perceived target;

[0444] Specifically, a grid search is performed for the measurements corresponding to the delay, velocity, and angle of each candidate group, along with the corresponding channel information. The search grid uses the position and velocity calculated based on the initial delay, velocity, and angle as the grid center points, and the search is performed with a certain step size. The search range can be set according to the reported variances of delay, angle, and velocity. Optionally, the number of detection candidate groups for each base station can be different.

[0445] Optionally, the specific implementation of the perception server determining the position and / or velocity of the perceived target can be found in the above description, and will not be repeated here.

[0446] Application Scenario 2: Multi-target, dual-base station

[0447] The specific implementation process on the base station p and base station q sides includes:

[0448] Step 31: Receive the collaboration awareness notification sent by SF respectively;

[0449] Step 32: Send status feedback information to SF respectively. This status feedback information is used to indicate whether the base station participates in cooperative sensing or not.

[0450] Step 33: Receive the cooperation notification sent by SF respectively, base station q sends the sensing signal configuration information to base station p, and base station q sends the sensing signal;

[0451] Optionally, the sensing signal configuration information includes: relevant information of the reference signal such as subcarrier spacing 30kHz, actual number of subcarriers used 3276, carrier frequency 6GHz, time-frequency domain COMB factor 1, number of antennas 8, number of symbols 100, number of subcarriers 4096, pilot sequence, location of base station, antenna location, etc.

[0452] Step 34: Base station p senses the signal configuration information and receives the echo signal of the sensed signal according to the sensed signal configuration information to obtain channel information.

[0453] Specifically, the steps include the following:

[0454] Step 34.1: Perform three-domain processing on the first channel response expressed by Formula 7 to obtain the target spectrum;

[0455] Specifically, each function value in the target spectrum corresponds to a set of time delay, velocity, and angle. By utilizing the sparsity of time, frequency, and spatial domains, a detection algorithm is used to determine the function values ​​corresponding to multiple sensing targets (e.g., 3). Each function value corresponds to a set of time delay, velocity, and angle measurements.

[0456] Step 34.2: Based on the measurement quantities corresponding to each sensing target obtained above, perform windowing and three-domain inverse transformation to convert the three-domain spectrum (i.e. the target spectrum above) into a second channel response that has removed the multipath effect.

[0457] Step 34.3: Determine the corresponding channel information based on the second channel response;

[0458] Optionally, this step involves constructing channel information corresponding to time delay, velocity, and angle. The principle is to eliminate the phase deviations in velocity, time delay, and angle between different symbols, subcarriers, and antennas, thereby enabling superposition and merging to improve the signal-to-noise ratio.

[0459] It should be noted that for three-dimensional compression, the estimated values ​​of the other two dimensions need to be compensated in order to achieve the effect of combining symbol, antenna, and subcarrier signals.

[0460] Step 34.4: Each base station reports to SF the corresponding measurement quantities, measurement quality, time delay domain channel information, spatial domain channel information, Doppler domain channel information, and channel information quality for each sensing target.

[0461] It should be noted that the delay, velocity, and angle are real numbers and can be represented in binary. Their granularity is 1 / 2^21 of the sampling resolution (1 / B, 1 / T, 1 / A) for delay, angle, and velocity, where B is the signal bandwidth, T is the total symbol length, and A is the antenna element aperture size. Their ranges can be arbitrarily set, such as delay INTEGER(1..1970049), angle INTEGER(1..1970049), and velocity INTEGER(1..1970049). The channel information corresponding to delay, velocity, and angle, being complex numbers, can be represented in binary for each element in the vector, with the granularity set. This will not be elaborated further here. It is important to note that the dimensions of the channel information can be of the following types:

[0462] Format 1: Delay domain channel information dimension: 1*4096, spatial domain channel information dimension: 1*8, Doppler domain channel information dimension: 1*100;

[0463] Format 2: Delay domain channel information dimension: 1*2417, Spatial domain channel information dimension: 1*5, Doppler domain channel information dimension: 1*41;

[0464] Form 3: Delay domain channel information dimension: 1*1024, spatial domain channel information dimension: 1*4, Doppler domain channel information dimension: 1*20, which corresponds to a time delay domain (subcarrier dimension) compression comb factor of 4, a spatial domain (antenna dimension) compression comb factor of 2, and a Doppler domain (symbol or time slot dimension) compression comb factor of 5.

[0465] Forms 2 and 3 indicate that channel information is further compressed through undersampling, compressed sensing (utilizing channel sparsity), etc., thereby further reducing the dimensionality. In this case, in addition to reporting channel information, the compression comb factor of each domain also needs to be reported, which is included in the channel information.

[0466] The final reporting overhead is 2*(4096+8+100)=8408 bits, while the overhead of directly reporting the entire channel is 2*(4096*8*100)=6553600 bits. The former is much smaller than the latter.

[0467] The main implementation process on the SF side includes:

[0468] Step 41: Send a notification to each base station to perform cooperative sensing and sensing mode (bi-base). Here, the transmitting and receiving base stations p and q are in the set of sensing base stations. The set of sensing base stations is selected based on prior information, such as the approximate distance between the sensing target and each base station.

[0469] Step 42: Receive status feedback information sent by each base station in the sensing base station set, determine the base stations that can cooperate in sensing based on the status feedback information, and send a cooperation notification to each base station that can cooperate in sensing to trigger the sensing process.

[0470] Optionally, SF may also notify each base station of the type identifier of the cooperative sensing mode (e.g., channel data fusion or measurement data fusion), the required sensing accuracy level (e.g., low-precision sensing, medium-precision sensing or high-precision sensing) or the specific value of the sensing accuracy.

[0471] Step 43: The sensing server uses cost search to estimate the position and / or velocity of the sensing target, and determines the position and / or velocity of each sensing target for each base station;

[0472] Specifically, a grid search is performed for the measurement quantities corresponding to the delay, velocity, and angle of each candidate group, as well as the corresponding channel information. The search grid uses the position and velocity calculated based on the initial delay, velocity, and angle as the grid center point, and searches are performed with a certain step size. The search range can be set according to the reported variance of delay, angle, and velocity.

[0473] Optionally, the number of detection candidate groups can be different for each base station.

[0474] Optionally, the specific implementation of the perception server determining the position and / or velocity of the perceived target can be found in the above description, and will not be repeated here.

[0475] It should be noted that the above application examples report the joint spectral function of the time, frequency, and space domains to the perception server after dimensionality reduction. The perception server then constructs and overlays the coordinate domain cost spectrum through multi-base station cooperation, which enables more accurate estimation of position, distance, angle, and velocity.

[0476] Compared to directly reporting raw channel data in time, frequency, and space dimensions, at least one embodiment of this application reduces reporting overhead by performing dimensionality reduction processing before reporting. At the same time, considering that multipath can affect cooperative sensing performance, the impact of multipath is reduced by using joint windowing of different dimensions. This allows for multi-base station cooperative processing using the most raw single-path information possible, maximizing the use of raw information for data-dimensional cooperative processing, improving sensing accuracy, and thus enhancing sensing performance.

[0477] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), and 5G New Radio (NR). All of these systems include terminals (also called terminal equipment) and network equipment. The systems may also include a core network component, such as Evolved Packet System (EPS) and 5G system (5GS).

[0478] The terminal involved in the embodiments of this application can also be called a terminal device, which can be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem, etc. The name of the terminal device may also differ in different systems; for example, in a 5G system, the terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices, which exchange voice and / or data with the radio access network. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other devices. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but this application does not limit the terminology.

[0479] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a NodeB in a Wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may also be geographically separated.

[0480] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0481] like Figure 4 As shown, this application embodiment provides an information processing method, executed by a core network device, including:

[0482] Step S401: Receive channel information sent by at least one access network device;

[0483] Step S402: Estimate the position and / or velocity of the sensing target based on the channel information;

[0484] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0485] Optionally, the method further includes:

[0486] Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0487] Optionally, the method further includes:

[0488] The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

[0489] Optionally, the quality is indicated by at least one of the following:

[0490] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0491] Optionally, the method further includes:

[0492] Receive the measurement data sent by the at least one access network device; or

[0493] Receive measurement quantities and measurement quality sent by the at least one access network device, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0494] Wherein, the measured quantity is the estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain.

[0495] Optionally, before receiving channel information sent by at least one access network device, the method further includes:

[0496] Send a cooperative awareness notification to the at least one access network device;

[0497] Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing;

[0498] Send collaboration notifications to access network devices that participate in collaborative sensing.

[0499] Optionally, estimating the position and / or velocity of the perceived target based on the channel information includes at least one of the following:

[0500] Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information.

[0501] Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

[0502] It should be noted that all the implementation methods in the above embodiments are applicable to the embodiments of the information processing method applied to the core network equipment side, and can achieve the same technical effect, so they will not be described again here.

[0503] like Figure 5 As shown, this application embodiment provides an information transmission device 500, applied to a first access network device, including:

[0504] The acquisition unit 501 is used to measure the echo signal of the received sensing signal to obtain channel information;

[0505] The first transmitting unit 502 is used to transmit the channel information to the core network equipment;

[0506] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0507] Optionally, the device further includes:

[0508] The second receiving unit is configured to receive first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0509] The determining unit is configured to determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information based on the first indication information.

[0510] The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

[0511] Optionally, the device further includes:

[0512] The second transmitting unit is used to transmit second indication information to the core network equipment, the second indication information being used to indicate the quality of the channel information.

[0513] Optionally, the quality of the channel information is indicated by at least one of the following:

[0514] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0515] Optionally, the device further includes:

[0516] The third transmitting unit is used to transmit measurement data to the core network equipment; or

[0517] The fourth transmitting unit is used to transmit measurement quantities and measurement quantity quality to the core network equipment, wherein the measurement quantity quality includes: the error range or variance of the measurement quantity;

[0518] Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain.

[0519] Optionally, before the acquisition unit 501 measures the echo signal of the received sensing signal to obtain channel information, the device further includes:

[0520] The third receiving unit is used to receive the cooperative awareness notification sent by the core network device;

[0521] The fifth sending unit is used to send status feedback information to the core network device, the status feedback information being used to indicate whether the first access network device participates in or does not participate in cooperative sensing.

[0522] The fourth receiving unit is used to receive the cooperation notification sent by the core network device;

[0523] An execution unit is configured to send a sensing signal to a sensing target and receive an echo signal of the sensing signal according to the cooperation notification, or to receive an echo signal of the sensing signal according to the cooperation notification.

[0524] Optionally, the execution unit is configured to:

[0525] Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or

[0526] The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

[0527] Optionally, the sensing signal configuration information includes at least one of the following:

[0528] Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

[0529] Optionally, the acquisition unit 501 is configured to:

[0530] The echo signal of the received sensing signal is measured to obtain the first channel response;

[0531] Perform multipath removal processing on the first channel response to obtain the second channel response;

[0532] Obtain channel information based on the second channel response.

[0533] Optionally, the specific implementation of performing multipath removal processing on the first channel response to obtain the second channel response includes:

[0534] The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information.

[0535] Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum;

[0536] Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

[0537] Optionally, the specific implementation of processing the first channel response in the target domain to obtain the target spectrum corresponding to the target domain includes any one of the following:

[0538] If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain;

[0539] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains.

[0540] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

[0541] Optionally, the specific implementation of performing multipath removal processing on the target spectrum based on the measured quantity to obtain the second channel response includes any one of the following:

[0542] If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response;

[0543] If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains.

[0544] If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

[0545] Optionally, the specific implementation of obtaining channel information based on the second channel response includes any one of the following:

[0546] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain.

[0547] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

[0548] Optionally, the specific implementation of compressing the second channel response based on the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain includes at least one of the following:

[0549] The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain.

[0550] The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain;

[0551] The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

[0552] It should be noted that this device embodiment corresponds one-to-one with the above method embodiments. All implementation methods in the above method embodiments are applicable to this device embodiment and can achieve the same technical effect.

[0553] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0554] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0555] like Figure 6 As shown in the illustration, this application embodiment also provides an access network device, which is a first access network device, including a processor 600, a transceiver 610, a memory 620, and a program stored in the memory 620 and executable on the processor 600; wherein, the transceiver 610 is connected to the processor 600 and the memory 620 via a bus interface, and the processor 600 is used to read the program in the memory and execute the following processes:

[0556] The echo signal of the received sensing signal is measured to obtain channel information;

[0557] The channel information is sent to the core network equipment via a transceiver;

[0558] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0559] Transceiver 610 is used to receive and send data under the control of processor 600.

[0560] Among them, Figure 6In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 600 and memory represented by memory 620 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 610 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 630 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0561] The processor 600 is responsible for managing the bus architecture and general processing, while the memory 620 can store the data used by the processor 600 when performing operations.

[0562] Optionally, the processor 600 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0563] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0564] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0565] The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0566] Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information;

[0567] The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

[0568] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0569] Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

[0570] Optionally, the quality of the channel information is indicated by at least one of the following:

[0571] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0572] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0573] Send measurement data to the core network equipment; or

[0574] Send measurement quantities and measurement quality to the core network equipment, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0575] Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain.

[0576] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0577] Receive the cooperative awareness notification sent by the core network device;

[0578] The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing.

[0579] Receive the cooperation notification sent by the core network device;

[0580] According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

[0581] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0582] Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or

[0583] The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

[0584] Optionally, the sensing signal configuration information includes at least one of the following:

[0585] Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

[0586] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0587] The echo signal of the received sensing signal is measured to obtain the first channel response;

[0588] Perform multipath removal processing on the first channel response to obtain the second channel response;

[0589] Obtain channel information based on the second channel response.

[0590] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0591] The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information.

[0592] Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum;

[0593] Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

[0594] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0595] If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain;

[0596] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains.

[0597] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

[0598] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0599] If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response;

[0600] If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains.

[0601] If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

[0602] Optionally, the processor is configured to read the computer program in the memory and perform any of the following operations:

[0603] If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain.

[0604] If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

[0605] Optionally, the processor is configured to read a computer program from the memory and perform at least one of the following operations:

[0606] The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain.

[0607] The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain;

[0608] The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

[0609] It should be noted that the access network device provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0610] This application also provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of an information transmission method applied to a first access network device. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0611] like Figure 7 As shown, this application embodiment provides an information processing device 700, applied to core network equipment, including:

[0612] The first receiving unit 701 is used to receive channel information sent by at least one access network device;

[0613] The processing unit 702 is used to estimate the position and / or velocity of the sensing target based on the channel information.

[0614] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0615] Optionally, the device further includes:

[0616] The sixth transmitting unit is configured to transmit first indication information to the at least one access network device, wherein the first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0617] Optionally, the device further includes:

[0618] The fifth receiving unit is configured to receive second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

[0619] Optionally, the quality of the channel information is indicated by at least one of the following:

[0620] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0621] Optionally, the device further includes:

[0622] The sixth receiving unit is configured to receive measurement quantities sent by the at least one access network device; or

[0623] The seventh receiving unit is used to receive the measurement quantity and measurement quality sent by the at least one access network device, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0624] Wherein, the measured quantity is the estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain.

[0625] Optionally, before the first receiving unit 701 receives channel information sent by at least one access network device, the apparatus further includes:

[0626] The seventh sending unit is used to send a cooperative awareness notification to the at least one access network device;

[0627] The eighth receiving unit is used to receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether or not to participate in cooperative sensing;

[0628] The sending unit is used to send cooperation notifications to access network devices participating in cooperative sensing.

[0629] Optionally, the processing unit is configured to implement at least one of the following:

[0630] Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information.

[0631] Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

[0632] It should be noted that this device embodiment corresponds one-to-one with the above method embodiments. All implementation methods in the above method embodiments are applicable to this device embodiment and can achieve the same technical effect.

[0633] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0634] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0635] like Figure 8 As shown, this application embodiment also provides a core network device, including a processor 800, a transceiver 810, a memory 820, and a program stored in the memory 820 and executable on the processor 800; wherein the transceiver 810 is connected to the processor 800 and the memory 820 via a bus interface, wherein the processor 800 is used to read the program in the memory and execute the following process: wherein the processor is used to read the computer program in the memory and perform the following operations:

[0636] Receive channel information sent by at least one access network device via a transceiver;

[0637] Based on the channel information, the position and / or velocity of the sensed target are estimated;

[0638] The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

[0639] Transceiver 810 is used to receive and send data under the control of processor 800.

[0640] Among them, Figure 8 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 800 and memory represented by memory 820 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 810 can be multiple components, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 830 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0641] The processor 800 is responsible for managing the bus architecture and general processing, while the memory 820 can store the data used by the processor 800 during operation.

[0642] Optionally, the processor 800 can be a CPU (Central Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or CPLD (Complex Programmable Logic Device), and the processor can also adopt a multi-core architecture.

[0643] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0644] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0645] Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

[0646] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0647] The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

[0648] Optionally, the quality of the channel information is indicated by at least one of the following:

[0649] The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

[0650] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0651] Receive the measurement data sent by the at least one access network device; or

[0652] Receive measurement quantities and measurement quality sent by the at least one access network device, wherein the measurement quality includes: the error range or variance of the measurement quantity;

[0653] Wherein, the measured quantity is the estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain.

[0654] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0655] Send a cooperative awareness notification to the at least one access network device;

[0656] Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing;

[0657] Send collaboration notifications to access network devices that participate in collaborative sensing.

[0658] Optionally, estimating the position and / or velocity of the perceived target based on the channel information includes at least one of the following:

[0659] Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information.

[0660] Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

[0661] It should be noted that the core network equipment provided in this application embodiment can implement all the method steps implemented in the above method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0662] This application also provides a computer-readable storage medium storing a computer program thereon, wherein the computer program, when executed by a processor, implements the steps of an information processing method applied to a core network device. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0663] This application also provides a computer program product, including computer instructions. When these computer instructions are executed by a processor, they implement the various processes in the above method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0664] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0665] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0666] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0667] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0668] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An information transmission method, characterized in that, Applied to first access network equipment, including: The echo signal of the received sensing signal is measured to obtain channel information; Send the channel information to the core network equipment; The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

2. The method according to claim 1, characterized in that, Also includes: The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution. Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information; The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

3. The method according to claim 1, characterized in that, Also includes: Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

4. The method according to claim 3, characterized in that, The quality of the channel information is indicated by at least one of the following: The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

5. The method according to claim 1, characterized in that, Also includes: Send measurement data to the core network equipment; or Send measurement quantities and measurement quality to the core network equipment; Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain; the quality of the measured quantity includes: the error range or variance of the measured quantity.

6. The method according to claim 1, characterized in that, Before measuring the echo signal of the received sensed signal to obtain channel information, the method further includes: Receive the cooperative awareness notification sent by the core network device; The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing. Receive the cooperation notification sent by the core network device; According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

7. The method according to claim 6, characterized in that, The echo signal of the received sensing signal includes: Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

8. The method according to claim 7, characterized in that, The sensing signal configuration information includes at least one of the following: Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

9. The method according to claim 1, characterized in that, The step of measuring the echo signal of the received sensing signal to obtain channel information includes: The echo signal of the received sensing signal is measured to obtain the first channel response; Perform multipath removal processing on the first channel response to obtain the second channel response; Obtain channel information based on the second channel response.

10. The method according to claim 9, characterized in that, The step of performing multipath removal processing on the first channel response to obtain the second channel response includes: The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information. Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum; Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

11. The method according to claim 10, characterized in that, The step of processing the first channel response in the target domain to obtain the target spectrum corresponding to the target domain includes any one of the following: If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain; If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

12. The method according to claim 10, characterized in that, The step of performing multipath removal processing on the target spectrum based on the measured quantity to obtain the second channel response includes any one of the following: If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response; If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains. If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

13. The method according to claim 9, characterized in that, The step of obtaining channel information based on the second channel response includes any one of the following: If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

14. The method according to claim 13, characterized in that, The step of compressing the second channel response based on the thirteenth domain of the target domain to determine the channel information corresponding to the fourteenth domain of the target domain includes at least one of the following: The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain. The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain; The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

15. An information processing method, characterized in that, Applied to core network equipment, including: Receive channel information sent by at least one access network device; Based on the channel information, the position and / or velocity of the sensed target are estimated; The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

16. The method according to claim 15, characterized in that, Also includes: Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

17. The method according to claim 15, characterized in that, Also includes: The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

18. The method according to claim 17, characterized in that, The quality of the channel information is indicated by at least one of the following: The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

19. The method according to claim 15, characterized in that, Also includes: Receive the measurement data sent by the at least one access network device; or Receive the measurement quantity and measurement quality sent by the at least one access network device; Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain; the quality of the measured quantity includes: the error range or variance of the measured quantity.

20. The method according to claim 15, characterized in that, Before receiving channel information sent by at least one access network device, the method further includes: Send a cooperative awareness notification to the at least one access network device; Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing; Send collaboration notifications to access network devices that participate in collaborative sensing.

21. The method according to claim 15, characterized in that, The estimation of the position and / or velocity of the sensed target based on the channel information includes at least one of the following: Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information. Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

22. An access network device, wherein the access network device is a first access network device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: The echo signal of the received sensing signal is measured to obtain channel information; The channel information is sent to the core network equipment via a transceiver; The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

23. The access network device according to claim 22, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: The system receives first indication information sent by the core network device. The first indication information is used to indicate the required level of sensing accuracy, or the first indication information is used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution. Based on the first indication information, determine the length of the processing window corresponding to each domain in the target domain corresponding to the channel information; The target domain includes at least one of the following: spatial domain, Doppler domain, and time-delay domain.

24. The access network device according to claim 22, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Send a second indication message to the core network equipment, the second indication message being used to indicate the quality of the channel information.

25. The access network device according to claim 24, characterized in that, The quality of the channel information is indicated by at least one of the following: The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

26. The access network device according to claim 22, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Send measurement data to the core network equipment; or Send measurement quantities and measurement quality to the core network equipment; Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes at least one of the following: spatial domain, Doppler domain, and time delay domain; the quality of the measured quantity includes: the error range or variance of the measured quantity.

27. The access network device according to claim 22, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Receive the cooperative awareness notification sent by the core network device; The core network device sends status feedback information, which is used to indicate whether the first access network device participates in or does not participate in cooperative sensing. Receive the cooperation notification sent by the core network device; According to the cooperation notification, a sensing signal is sent to the sensing target and the echo signal of the sensing signal is received, or, according to the cooperation notification, the echo signal of the sensing signal is received.

28. The access network device according to claim 27, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: Based on the sensing signal configuration information, receive the echo signal of the sensing signal; or The system receives sensing signal configuration information sent by the second access network device, and receives the echo signal of the sensing signal sent by the second access network device according to the sensing signal configuration information.

29. The access network device according to claim 28, characterized in that, The sensing signal configuration information includes at least one of the following: Subcarrier spacing, actual number of subcarriers used, carrier frequency, time-frequency domain comb factor, number of antennas, number of symbols, number of subcarriers, pilot sequence, time-domain location of the sensed signal, frequency-domain location of the sensed signal, location of the access network equipment transmitting the sensed signal, and location of the antenna transmitting the sensed signal.

30. The access network device according to claim 22, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: The echo signal of the received sensing signal is measured to obtain the first channel response; Perform multipath removal processing on the first channel response to obtain the second channel response; Obtain channel information based on the second channel response.

31. The access network device according to claim 30, characterized in that, The processor is configured to read the computer program in the memory and perform the following operations: The first channel response is processed in the target domain to obtain the target spectrum corresponding to the target domain. The target domain includes at least one of the spatial domain, Doppler domain, and time delay domain corresponding to the channel information. Obtain the measurement quantity corresponding to the objective function value in the target spectrum, wherein the measurement quantity includes at least one of the time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity corresponding to the target spectrum; Based on the measured values, the target spectrum is subjected to multipath removal processing to obtain the second channel response.

32. The access network device according to claim 31, characterized in that, The processor is configured to read the computer program in the memory and perform any one of the following operations: If the target domain includes one of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed for the target domain to obtain the target spectrum corresponding to the target domain; If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, then the first channel response is processed in the first domain to obtain a first processing result, and the first processing result is processed in the second domain to obtain the target spectrum corresponding to the target domain. The first domain is one of the target domains, and the second domain is the other of the target domains. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, then the first channel response is processed by the third domain to obtain a second processing result, the second processing result is processed by the fourth domain to obtain a third processing result, and the third processing result is processed by the fifth domain to obtain the target spectrum corresponding to the target domain. The third domain is the first in the target domain, the fourth domain is the second in the target domain, and the fifth domain is the third in the target domain.

33. The access network device according to claim 31, characterized in that, The processor is configured to read the computer program in the memory and perform any one of the following operations: If the measurement quantity includes one of time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed based on the processing window corresponding to the target domain and the measurement quantity to obtain the second channel response; If the measurement quantity includes two of the following: time delay measurement quantity, Doppler measurement quantity, and spatial domain measurement quantity, then the target spectrum is processed in the sixth domain based on the processing window corresponding to the sixth domain and the measurement quantity to obtain the fourth processing result. The fourth processing result is then processed in the seventh domain based on the processing window corresponding to the seventh domain and the measurement quantity to obtain the second channel response. The sixth domain is one of the target domains, and the seventh domain is the other of the target domains. If the measured quantities include time delay measurements, Doppler measurements, and spatial measurements, then the target spectrum is processed in the eighth domain based on the processing window corresponding to the eighth domain and the measured quantities to obtain a fifth processing result. The fifth processing result is then processed in the ninth domain based on the processing window corresponding to the ninth domain and the measured quantities to obtain a sixth processing result. The sixth processing result is then processed in the tenth domain based on the processing window corresponding to the tenth domain and the measured quantities to obtain a second channel response. The eighth domain is the first among the target domains, the ninth domain is the second among the target domains, and the tenth domain is the third among the target domains.

34. The access network device according to claim 30, characterized in that, The processor is configured to read the computer program in the memory and perform any one of the following operations: If the target domain includes two of the spatial domain, Doppler domain, and time delay domain, the second channel response is compressed according to the eleventh domain of the target domain to determine the channel information corresponding to the twelfth domain of the target domain. The eleventh domain is one domain of the target domain, and the twelfth domain is another domain of the target domain. If the target domain includes a spatial domain, a Doppler domain, and a time delay domain, the second channel response is compressed according to the thirteenth domain in the target domain to determine the channel information corresponding to the fourteenth domain in the target domain. The fourteenth domain is any domain in the target domain, and the thirteenth domain is any other domain in the target domain except the fourteenth domain.

35. The access network device according to claim 34, characterized in that, The processor is configured to read a computer program from the memory and perform at least one of the following operations: The second channel response is compressed according to the time delay domain and spatial domain to obtain the channel information corresponding to the Doppler domain. The second channel response is compressed according to the Doppler domain and spatial domain to obtain the channel information corresponding to the time delay domain; The second channel response is compressed according to the time delay domain and Doppler domain to obtain the channel information corresponding to the spatial domain.

36. A core network device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Receive channel information sent by at least one access network device via a transceiver; Based on the channel information, the position and / or velocity of the sensed target are estimated; The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

37. The core network equipment according to claim 36, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Send a first indication message to the at least one access network device, the first indication message being used to indicate the required level of sensing accuracy, or the first indication message being used to indicate at least one of the following: the bandwidth of the sensing signal, the sensing duration, the antenna aperture, and the sensing resolution.

38. The core network equipment according to claim 36, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: The system receives a second indication information sent by the at least one access network device, the second indication information being used to indicate the quality of the channel information.

39. The core network equipment according to claim 38, characterized in that, The quality of the channel information is indicated by at least one of the following: The quality level, the length of the processing window corresponding to the channel information, the signal-to-interference-plus-noise ratio within the processing window corresponding to the channel information, and the variance of the channel error.

40. The core network equipment according to claim 36, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Receive the measurement data sent by the at least one access network device; or Receive the measurement quantity and measurement quality sent by the at least one access network device; Wherein, the measured quantity is an estimated value of the target domain corresponding to the channel information; the target domain includes one of the following: spatial domain, Doppler domain, and time delay domain; the quality of the measured quantity includes: the error range or variance of the measured quantity.

41. The core network equipment according to claim 36, characterized in that, The processor, for reading the computer program in the memory, also performs the following operations: Send a cooperative awareness notification to the at least one access network device; Receive status feedback information sent by the at least one access network device, the status feedback information being used to indicate whether to participate in cooperative sensing; Send collaboration notifications to access network devices that participate in collaborative sensing.

42. The core network equipment according to claim 36, characterized in that, The estimation of the position and / or velocity of the sensed target based on the channel information includes at least one of the following: Position estimation of the sensed target is performed based on the position search vector, velocity search vector, time-delay domain channel information, and spatial domain channel information. Velocity estimation of the sensed target is performed based on the position search vector, velocity search vector, and Doppler domain channel information.

43. An information transmission device, applied to a first access network device, characterized in that, include: The acquisition unit is used to measure the echo signal of the received sensing signal to obtain channel information; The first transmitting unit is used to transmit the channel information to the core network equipment; The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

44. An information processing device, applied to core network equipment, characterized in that, include: The first receiving unit is used to receive channel information sent by at least one access network device; The processing unit is used to estimate the position and / or velocity of the sensed target based on the channel information. The channel information includes at least one of the following: time-delay domain channel information, Doppler domain channel information, spatial domain channel information, time-delay domain compression factor, Doppler domain compression factor, and spatial domain compression factor.

45. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a computer program for causing the processor to perform the method according to any one of claims 1 to 21.

Images