Communication method and device, related equipment and storage medium

Abstract

The invention discloses a communication method and device, related equipment and a storage medium. The method comprises the steps that a first node sends first information to a second node, and the first information represents the sensing capability required by the first node; receiving at least two reference signals and second information sent by the second node, the second information representing an association relationship of the at least two reference signals, and the at least two reference signals corresponding to the sensing capability required by the first node; and performing sensing measurement and estimation by using the second information and the at least two reference signals to obtain a sensing result.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, related device, and storage medium. Background Art

[0002] With the development of mobile communication systems, the service demand for realizing perception measurement and estimation of a target through a mobile communication system is increasing day by day. In related technologies, perception measurement and estimation of a target are realized by transmitting and receiving reference signals and processing the received reference signals.

[0003] The ability to perform perception measurement and estimation using a single reference signal is limited. Usually, accurate perception results can only be obtained for some of the multiple dimensions, and it is difficult to meet the perception requirements of multiple dimensions simultaneously. To obtain high-precision perception results, it is necessary to perform perception measurement and estimation of a target from multiple dimensions. However, when performing perception measurement and estimation of multiple dimensions of a target through multiple reference signals, how to reduce the processing overhead while meeting the perception requirements is an urgent problem to be solved currently. Summary of the Invention

[0004] To solve the related technical problems, embodiments of this application provide a communication method, apparatus, related device, and storage medium.

[0005] The technical solution of the embodiments of this application is implemented as follows:

[0006] Embodiments of this application provide a communication method, which is applied to a first node and includes:

[0007] Sending first information to a second node, where the first information represents the perception ability required by the first node;

[0008] Receiving at least two reference signals and second information sent by the second node, where the second information represents the correlation relationship of the at least two reference signals, and the at least two reference signals correspond to the perception ability required by the first node;

[0009] Performing perception measurement and estimation using the second information and the at least two reference signals to obtain a perception result.

[0010] In the above solution, the second information is used to indicate at least one of the following:

[0011] The quasi co-location (QCL) relationship between different reference signals among the at least two reference signals, and the at least two reference signals are sent from different ports and / or different beams;

[0012] Among the at least two reference signals, the configuration of at least one of the transmission resource block, transmission resource element, and transmission power of at least one reference signal, where the at least two reference signals are sent from one port and / or one beam;

[0013] The offset of at least one of the transmission resource block, transmission resource element, and transmission power between different reference signals among the at least two reference signals, where the at least two reference signals are sent from one port and / or one beam.

[0014] In the above solution, the first information includes at least one of the following:

[0015] The third information, where the third information characterizes the measurement and estimation capabilities of the sensing parameters required by the first node;

[0016] The fourth information, where the fourth information characterizes the parameter configuration of the reference signals required by the first node.

[0017] In the above solution, the method further includes:

[0018] Sending fifth information to the second node, where the fifth information includes information associated with the update of the reference signals.

[0019] In the above solution, the fifth information includes at least one of the following:

[0020] The sixth information, where the sixth information is used to indicate whether the second node needs to update the reference signals;

[0021] The seventh information, where the seventh information characterizes the measurement and estimation capabilities of the sensing parameters required by the first node for the update;

[0022] The eighth information, where the eighth information characterizes the parameter configuration of the reference signals required by the first node for the update.

[0023] In the above solution, the method further includes:

[0024] Sending the sensing result to the second node.

[0025] In the above solution, the method further includes:

[0026] Receiving the updated at least two reference signals and the ninth information sent by the second node, where the ninth information includes the association relationship of the updated at least two reference signals.

[0027] An embodiment of the present application further provides a communication method, which is applied to a second node and includes:

[0028] Receiving the first information sent by the first node, where the first information characterizes the sensing capabilities required by the first node;

[0029] Configure at least two reference signals and second information by using the first information, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node;

[0030] Send the at least two reference signals and the second information to the first node.

[0031] In the above solution, the second information is used to indicate at least one of the following:

[0032] The QCL relationship between different reference signals among the at least two reference signals, and the at least two reference signals are sent from different ports and / or different beams;

[0033] Among the at least two reference signals, the configuration of at least one of the transmission resource block, transmission resource unit, and transmission power of at least one reference signal, and the at least two reference signals are sent from one port and / or one beam;

[0034] The offset of at least one of the transmission resource block, transmission resource unit, and transmission power between different reference signals among the at least two reference signals, and the at least two reference signals are sent from one port and / or one beam.

[0035] In the above solution, the first information includes at least one of the following:

[0036] Third information, where the third information characterizes the measurement and estimation capabilities of the sensing parameters required by the first node;

[0037] Fourth information, where the fourth information characterizes the parameter configuration of the reference signal required by the first node.

[0038] In the above solution, the method further includes:

[0039] Receive fifth information sent by the first node, where the fifth information includes information associated with the update of the reference signal.

[0040] In the above solution, the fifth information includes at least one of the following:

[0041] Sixth information, where the sixth information is used to indicate whether the second node needs to update the reference signal;

[0042] Seventh information, where the seventh information characterizes the measurement and estimation capabilities of the sensing parameters required by the updated first node;

[0043] Eighth information, where the eighth information characterizes the parameter configuration of the reference signal required by the updated first node.

[0044] In the above solution, the method further includes:

[0045] Receive the sensing result sent by the first node.

[0046] In the above solution, the method further includes:

[0047] Reconfigure at least two reference signals and ninth information for the first node, where the ninth information includes the association relationship of the updated at least two reference signals;

[0048] Send the updated at least two reference signals and ninth information to the first node.

[0049] An embodiment of the present application further provides a communication device, disposed at a first node, including:

[0050] A first sending unit, configured to send first information to a second node, where the first information represents the sensing capability required by the first node;

[0051] A first receiving unit, configured to receive at least two reference signals and second information sent by the second node, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0052] A sensing unit, configured to perform sensing measurement and estimation by using the second information and the at least two reference signals to obtain a sensing result.

[0053] An embodiment of the present application further provides a communication device, disposed at a second node, including:

[0054] A second receiving unit, configured to receive first information sent by a first node, where the first information represents the sensing capability required by the first node;

[0055] A configuration unit, configured to configure at least two reference signals and second information by using the first information, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0056] A second sending unit, configured to send the at least two reference signals and second information to the first node.

[0057] An embodiment of the present application further provides a first node, including:

[0058] A first communication interface, configured to send first information to a second node, where the first information represents the sensing capability required by the first node; and receive at least two reference signals and second information sent by the second node, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0059] A first processor, configured to perform sensing measurements and estimations by using the second information and at least two reference signals, so as to obtain a sensing result.

[0060] An embodiment of this application further provides a second node, including:

[0061] A second communication interface, configured to receive first information sent by a first node, where the first information represents the sensing capabilities required by the first node; and send at least two configured reference signals and second information to the first node, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node;

[0062] A second processor, configured to configure at least two reference signals and second information by using the first information.

[0063] An embodiment of this application further provides a first node, including: a first processor and a first memory for storing a computer program that can run on the processor,

[0064] wherein, when the first processor is used to run the computer program, it executes the steps of any of the methods on the first node side.

[0065] An embodiment of this application further provides a second node, including: a second processor and a second memory for storing a computer program that can run on the processor,

[0066] wherein, when the second processor is used to run the computer program, it executes the steps of any of the methods on the second node side.

[0067] An embodiment of this application further provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of any of the methods on the first node side, or implements the steps of any of the methods on the second node side.

[0068] The communication method, device, related equipment, and storage medium provided by the embodiments of the present application. A first node sends first information to a second node, where the first information represents the sensing capabilities required by the first node; receives at least two reference signals and second information sent by the second node, where the second information represents the correlation relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; uses the second information and the at least two reference signals to perform sensing measurement and estimation to obtain a sensing result. In the solution provided by the embodiments of the present application, the second node configures and sends at least two reference signals and second information representing the correlation relationship between the reference signals to the first node according to the sensing capability information required by the first node, and the first node uses the at least two reference signals and the second information to perform multi-dimensional sensing measurement and estimation on the target. In this way, the first node receives multiple reference signals for sensing measurement and estimation, and by combining the sensing results of the multiple reference signals, an accurate multi-dimensional sensing result can be obtained, which can meet the sensing requirements of multiple dimensions at the same time. At the same time, by using the second information to represent the correlation relationship between the multiple reference signals, the first node only needs to use each reference signal to perform sensing measurement and estimation on some of the multiple dimensions respectively to obtain the sensing results for some dimensions, and an accurate multi-dimensional sensing result can be obtained by combining the sensing results for some dimensions of multiple reference signals, without the need to use each reference signal to perform sensing measurement and estimation in all dimensions, effectively reducing the processing overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 is a schematic flowchart of a communication method according to an embodiment of the present application;

[0070] Figure 2 is a schematic diagram showing the correspondence between four QCL types of reference signals and large-scale characteristic parameters according to an embodiment of the present application;

[0071] Figure 3 is a schematic flowchart of another communication method according to an embodiment of the present application;

[0072] Figure 4 is a schematic flowchart of the first node performing sensing measurement and estimation according to an embodiment of the present application;

[0073] Figure 5 is a schematic diagram of the structure of a cooperative sensing system according to an application example of the present application;

[0074] Figure 6 is a schematic flowchart of the base station B and the base station A performing cooperative sensing according to an application example of the present application;

[0075] Figure 7 is a schematic diagram of the structure of another cooperative sensing system according to an application example of the present application;

[0076] Figure 8 Schematic diagram of the structure of a communication device according to an embodiment of the present application;

[0077] Figure 9 Schematic diagram of the structure of another communication device according to an embodiment of the present application;

[0078] Figure 10 Schematic diagram of the structure of the first node according to an embodiment of the present application;

[0079] Figure 11 Schematic diagram of the structure of the second node according to an embodiment of the present application;

[0080] Figure 12 Schematic diagram of the structure of the communication system according to an embodiment of the present application. Detailed implementation manners

[0081] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0082] With the development of mobile communication systems, the demand for realizing sensing services through mobile communication systems is increasing day by day. In order to obtain high-precision sensing results, it is necessary to perform sensing measurements (which can also be understood as measuring the parameters of the reference signal) and estimations (which can also be understood as performing derivation calculations based on the parameters obtained by measurement to obtain the sensing results) on the target from multiple dimensions. For example, when sensing the location information of the target, sensing measurements and estimations can be performed from dimensions such as distance, angle, and speed; when sensing the feature information of the target, sensing measurements and estimations can be performed from dimensions such as shape, size, and material. Using the sensing results of multiple dimensions (which can also be referred to as multi-dimensional sensing results or multi-dimensional sensing results) can more accurately characterize the relevant information of the sensing target.

[0083] In the related art, the sensing measurement and estimation of the target are realized by sending and receiving reference signals and processing the received reference signals to obtain multi-dimensional sensing results. Specifically, a reference signal can be sent to the target, and the echo of the reference signal reflected by the target received is measured. The channel parameters are estimated using the measurement results, and the multi-dimensional sensing results are calculated using the channel parameters.

[0084] However, when using a single reference signal for sensing measurement and estimation, due to the limited ability of the single reference signal for sensing measurement and estimation, it is often only possible to obtain accurate sensing results for some of the multiple dimensions, making it difficult to simultaneously meet the sensing requirements (which can also be referred to as sensing accuracy requirements) of multiple dimensions; for example, when using the reference signal RS 1 to sense the location information of the target, the reference signal RS 1It is only possible to accurately sense, measure, and estimate from two dimensions of distance and angle, and it is not possible to accurately sense, measure, and estimate the speed information of the target. Therefore, through the reference signal RS 1 The obtained sensing result cannot simultaneously meet the multi-dimensional sensing requirements for the target position information, and thus cannot accurately represent the target position information.

[0085] If multiple reference signals are used to sense, measure, and estimate the target from multiple dimensions, each reference signal can be used to perform sensing, measurement, and estimation in all dimensions, and the sensing results of each reference signal in all dimensions can be obtained. By combining the sensing results of each reference signal in all dimensions, an accurate multi-dimensional sensing result can be obtained, realizing accurate multi-dimensional sensing, measurement, and estimation of the target. However, since each reference signal needs to be used to perform sensing, measurement, and estimation in all dimensions, the processing overhead is large.

[0086] Based on this, in various embodiments of the present application, the sending node of the reference signal configures and sends at least two reference signals and association information characterizing the association relationship between the reference signals to the receiving node of the reference signal according to the sensing capability information required by the receiving node of the reference signal. The receiving node of the reference signal uses the at least two reference signals and the association information to realize multi-dimensional sensing, measurement, and estimation of the target. In this way, the receiving node of the reference signal receives multiple reference signals for sensing, measurement, and estimation, can combine the sensing results of multiple reference signals to obtain an accurate multi-dimensional sensing result, and can simultaneously meet the sensing requirements of multiple dimensions. At the same time, by using the association information to characterize the association relationship between multiple reference signals, the receiving node of the reference signal only needs to use each reference signal to perform sensing, measurement, and estimation for only some of the multiple dimensions respectively, obtain the sensing results for the partial dimensions, and can obtain an accurate multi-dimensional sensing result by combining the sensing results for multiple partial dimensions, without the need to use each reference signal to perform sensing, measurement, and estimation in all dimensions, effectively reducing the processing overhead.

[0087] Embodiments of the present application provide a communication method, which is applied to a first node, as Figure 1 shown, and the method includes:

[0088] Step 101: Send first information to a second node, where the first information characterizes the sensing capability required by the first node;

[0089] Step 102: Receive at least two reference signals and second information sent by the second node, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0090] Step 103: Perform sensing measurement and estimation by using the second information and at least two reference signals to obtain a sensing result.

[0091] Here, in practical applications, the first node and the second node may be base stations or any communication nodes capable of implementing the above steps, and the embodiments of the present application do not limit this.

[0092] When both the first node and the second node are base stations, the first node and the second node can communicate through the Xn interface. That is to say, the first information, at least two reference signals, and the second information can be transmitted between the first node and the second node through the Xn interface.

[0093] In practical applications, the manner in which the first node uses a specific reference signal to perform sensing measurement and estimation to obtain a sensing result can be understood according to relevant sensing measurement and estimation schemes.

[0094] In practical applications, when a communication node performs sensing measurement and estimation on a target, in the network, due to the different hardware of each communication node and the environment where each communication node is located, the sensing capabilities of each communication node are different, and the reference signals that can be processed are also different. The first node can send the first information to the second node so that the second node can configure and send the reference signals that the first node can process according to the first information.

[0095] In one embodiment, the first information may include at least one of the following:

[0096] Third information, where the third information characterizes the measurement and estimation capabilities of the sensing parameters required by the first node;

[0097] Fourth information, where the fourth information characterizes the parameter configuration of the reference signals required by the first node.

[0098] Here, in practical applications, the third information characterizes the measurement and estimation capabilities of the sensing parameters required by the first node, and specifically may include at least one of the following: maximum ranging range, maximum speed measurement range, maximum angle measurement range, angle resolution (which can be expressed as θ_required), speed resolution (which can be expressed as v_required), distance resolution (which can be expressed as R_required), etc.

[0099] Here, in practical applications, the fourth information characterizes the parameter configuration of the reference signals required by the first node, and specifically may include: carrier frequency, bandwidth, subcarrier spacing, symbol interval, symbol period, comb, etc.

[0100] In actual application, after receiving the first information sent by the first node, the second node can determine the sensing requirements of the sensing service in multiple dimensions according to the third information and / or the fourth information included in the received first information, and then configure multiple reference signals that can simultaneously meet the sensing requirements in multiple dimensions, as well as the association relationship between the multiple reference signals.

[0101] In actual application, in order to simultaneously meet the sensing requirements in multiple dimensions, the first node can perform sensing measurement and estimation on at least two different reference signals, so as to obtain all the parameters corresponding to the sensing requirements in multiple dimensions.

[0102] Exemplarily, when sensing the position of a target, in order to obtain parameters such as the distance, angle, and speed of the target, it is often necessary to estimate the large-scale channel characteristics parameters such as the spatial reception parameters of the channel (which can also be called spatial receiver parameters, and can be expressed in English as Spatial Receiver Parameter), Doppler shift (expressed in English as Doppler Shift), Doppler spread (expressed in English as Doppler Spread), average delay (expressed in English as Average Delay), and delay spread (expressed in English as Delay Spread) through reference signals, and calculate the parameters such as the distance, angle, and speed of the target through the large-scale channel characteristics parameters, so as to realize the sensing of the position of the target.

[0103] Specifically, after estimating the average delay and delay spread of the channel, the transmission distance of the reference signal can be calculated, and further, the distance parameter of the target can be determined according to the transmission distance of the reference signal. After estimating the spatial reception parameters of the channel, the angle parameter of the target can be determined through the beamforming characteristics of the downlink received signal included in the spatial reception parameters (i.e., the main arrival angle and average arrival angle of the reference signal, etc.). After estimating the Doppler shift and Doppler spread of the channel, the speed parameter of the target can be further calculated.

[0104] Exemplarily, assuming that the channel state information reference signal (CSI-RS) is selected as the reference signal for sensing measurement and estimating the position of the target, in order to reduce communication overhead, the CSI-RS can be transmitted with a lower time-domain density, that is, the CSI-RS has a longer transmission period and a slower change speed. As described above, in order to accurately sense and measure the position of the target and estimate the large-scale characteristic parameters of the channel through the reference signal, since the CSI-RS can occupy the full bandwidth in the frequency domain and can meet the requirements of accurately estimating the average delay and delay spread of the channel, the average delay and delay spread of the channel can be directly estimated through the CSI-RS, and the sensing result in the distance dimension of the target can be obtained; at the same time, the spatial reception parameters corresponding to the CSI-RS can be used to obtain the sensing result in the angle dimension of the target. However, since the Doppler effect is related to the frequency change and time change rate of the signal, it is difficult to accurately estimate the large-scale characteristic parameters of the channel related to the Doppler effect (i.e., the Doppler frequency shift and Doppler spread of the channel) by using only the CSI-RS with a low time-domain density. At this time, an additional reference signal, such as a tracking reference signal (TRS), can be used to accurately estimate the Doppler frequency shift and Doppler spread of the channel, and then the sensing result in the velocity dimension of the target can be obtained. Through the two reference signals, CSI-RS and TRS, the target can be accurately sensed, measured, and estimated in three dimensions: distance, angle, and speed, which can simultaneously meet the sensing requirements of multiple dimensions and achieve high-precision sensing.

[0105] However, when the first node uses multiple reference signals for sensing measurement and estimation, if the association relationship between the multiple reference signals is not known, it is necessary to perform sensing measurement and estimation on each reference signal in all dimensions, resulting in high processing overhead. In order to reduce the processing overhead, the second node can use the second information to inform the first node of the association relationship between the multiple reference signals. The first node obtains the association relationship of the multiple reference signals by receiving the second information. In this way, the first node only needs to use each reference signal to perform sensing measurement and estimation in some dimensions respectively, obtain the sensing results for some dimensions, and by combining the sensing results for multiple partial dimensions, a multi-dimensional sensing result that simultaneously meets the sensing requirements of multiple dimensions can be obtained, thus effectively reducing the processing overhead.

[0106] Exemplarily, assume that the first node receives two reference signals and association information for sensing measurement and estimation of the target position information, where the two reference signals are RS 1 and RS 2 , and the association information indicates that RS1 It can accurately measure and estimate the angle parameter and distance parameter of the target. At the same time, using RS 2 It can accurately measure and estimate the speed parameter of the target; thus, the first node uses RS 1 and RS 2 to sense, measure and estimate the target, and by combining the sensing results corresponding to RS 1 (the angle parameter and distance parameter of the target) with the sensing result corresponding to RS 1 (the speed parameter of the target), an accurate sensing result of the three dimensions of the angle, distance, and speed of the target is obtained, so as to achieve high-precision sensing of the target position information.

[0107] It can be understood that when the first node needs to measure the corresponding channel parameters (such as the above-mentioned large-scale channel characteristic parameters) using the reference signal and perform calculations (which can also be understood as estimations) using the channel parameters to obtain the sensing result, the second information represents the correlation relationship between multiple reference signals, and specifically may include: the same channel parameters, specific channel parameter values, and the difference of channel parameters between at least two reference signals. At this time, the first node can estimate some of the channel parameters based on the second information using each reference signal respectively, obtain the channel parameters by combining the partial parameters corresponding to each reference signal, and perform calculations using the channel parameters to obtain the sensing result. In this way, the first node does not need to estimate all the parameters in the channel parameters using each reference signal, effectively reducing the processing overhead. In practical applications, when the first node uses at least two reference signals for sensing measurement and estimation, if the at least two reference signals are sent from the same port and / or the same beam, it can be considered that the transmission channels of the at least two reference signals are the same, and the channel parameters required for calculating the sensing result are only related to the time-domain information, frequency-domain information, and power information of the corresponding reference signal. Therefore, the at least two reference signals can be correlated based on at least one of the corresponding time-domain information, frequency-domain information, and power information. Specifically, the first node can determine the frequency-domain range information and time-domain range information corresponding to the reference signal through the configuration parameters of the transmission resource block of the reference signal, and then estimate the corresponding channel parameters using the frequency-domain range information and time-domain range information; it can determine the subcarrier information (i.e., the frequency-domain information of the reference signal) and symbol information (i.e., the time-domain information of the reference signal) corresponding to the reference signal through the configuration parameters of the transmission resource unit of the reference signal, and then estimate the corresponding channel parameters using the subcarrier information and symbol information; it can determine the information such as path loss and propagation path characteristics corresponding to the reference signal through the configuration parameters of the transmission power of the reference signal, and then estimate the corresponding channel parameters using the path loss, propagation path characteristics, etc., and after obtaining the channel parameters, perform calculations using the channel parameters to obtain the sensing results of multiple dimensions.

[0108] However, when transmitting reference signals, the actual physical positions of the transmission ports (which can also be referred to as ports) of different reference signals and the panel orientations of the transmission antennas (which can also be understood as beams) may be different, resulting in the reference signals being transmitted through different channels. The Doppler effects generated after the reference signals are transmitted through different channels are different, and the time delays generated are also different, that is, the channel parameters estimated from the reference signals transmitted through different channels are different. At this time, correlation cannot be performed based on at least one of the time-domain information, frequency-domain information, and power information of the reference signals.

[0109] In the related art, the QCL relationship is used to indicate the correlation relationship between the large-scale characteristic parameters of the channels of different reference signals. Specifically, when at least two reference signals are known to be QCL, without considering the specific transmission channels of the at least two reference signals, it can be determined that the large-scale characteristic parameters of the relevant channels of the at least two reference signals are the same. Therefore, the at least two reference signals can be correlated based on the QCL relationship between different reference signals. Correspondingly, the first node can estimate the corresponding large-scale characteristic parameters of the channel through the QCL relationship between different reference signals and calculate the multi-dimensional perception result using the large-scale characteristic parameters of the channel.

[0110] Based on this, in an embodiment, the second information can be used to indicate at least one of the following:

[0111] The QCL relationship between different reference signals among the at least two reference signals, where the at least two reference signals are sent from different ports and / or different beams;

[0112] Among the at least two reference signals, the configuration of at least one of the transmission resource block, transmission resource unit, and transmission power of at least one reference signal, where the at least two reference signals are sent from one port and / or one beam;

[0113] The offset of at least one of the transmission resource block, transmission resource unit, and transmission power between different reference signals among the at least two reference signals, where the at least two reference signals are sent from one port and / or one beam.

[0114] Here, in practical applications, the at least two reference signals can be two reference signals of the same type with at least two different configurations, or two reference signals of different types.

[0115] In practical applications, when two different reference signals among the at least two reference signals are sent from different ports and / or different beams in a communication node, the QCL relationship between the two reference signals can be indicated by the second information, such as Figure 2As shown, the QCL relationship between different reference signals can be characterized by the QCL type (which can be denoted as qclType).

[0116] Exemplarily, assume that the first node receives two reference signals and a second piece of information for sensing measurement and estimation. The two reference signals are reference signal 1 and reference signal 2 respectively. Reference signal 1 and reference signal 2 are sent from different ports and / or different beams. The second piece of information indicates the QCL relationship between reference signal 1 and reference signal 2 (characterized by qclType). Specifically, when the value of qclType is TypeA, it indicates that the Doppler shift, Doppler spread, average delay, and delay spread of the channel estimated through reference signal 1 are the same as the large-scale characteristic parameters of the corresponding channel estimated through reference signal 2. That is, the Doppler shift, Doppler spread, average delay, and delay spread corresponding to reference signal 1 can be directly used as the Doppler shift, Doppler spread, average delay, and delay spread corresponding to reference signal 2. When the value of qclType is TypeB, the Doppler shift and Doppler spread corresponding to reference signal 1 can be directly used as the Doppler shift and Doppler spread corresponding to reference signal 2. When the value of qclType is TypeC, the Doppler shift and average delay corresponding to reference signal 1 can be directly used as the Doppler shift and average delay corresponding to reference signal 2. When the value of qclType is TypeD, the spatial reception parameters corresponding to reference signal 1 can be directly used as the spatial reception parameters corresponding to reference signal 2. Thus, when the first node performs sensing measurement and estimation on the target through reference signal 2, if one or more large-scale characteristic parameters of the channel cannot be accurately estimated through reference signal 2, based on the QCL relationship indicated by the second piece of information, the accurate large-scale characteristic parameters of the channel estimated through reference signal 1 can be directly used as the large-scale characteristic parameters of the channel corresponding to reference signal 2. Furthermore, by using the large-scale characteristic parameters of the channel for calculation, a multi-dimensional sensing result that can meet the sensing requirements of multiple dimensions can be obtained. At the same time, it is not necessary to estimate each large-scale characteristic parameter of the channel by using reference signal 1 and reference signal 2, reducing the processing overhead.

[0117] In practical applications, when the at least two reference signals are sent from one port and / or one beam of the communication node, the first node can perform sensing measurement and estimation according to the at least two reference signals and the configuration of at least one of the transmission resource block, transmission resource unit, and transmission power of at least one reference signal indicated by the second piece of information.

[0118] Exemplarily, assume that the first node receives two reference signals and second information for performing sensing measurements and estimations. The two reference signals are reference signal 1 and reference signal 2 respectively. Reference signal 1 and reference signal 2 are sent from one port and / or one beam. When sending reference signal 1 and reference signal 2, there is a relative time-domain offset, and there is no relative offset in power and frequency domain. Moreover, it is difficult to accurately estimate the channel parameters through the time-domain information corresponding to reference signal 1, while the channel parameters can be accurately estimated through the time-domain information corresponding to reference signal 2. At this time, the second information may indicate the configuration of the transmission resource unit of reference signal 2. The first node processes the received reference signal 1 to obtain the frequency-domain information and power information corresponding to reference signal 1. At the same time, the first node determines the subcarrier information (i.e., frequency-domain information) and symbol information (i.e., time-domain information) corresponding to reference signal 2 based on the configuration of the transmission resource unit of reference signal 2 indicated by the second information. Channel parameter estimation is performed using the frequency-domain information, power information corresponding to reference signal 1, and the time-domain information corresponding to reference signal 2, and a multi-dimensional sensing result that simultaneously meets the sensing requirements of multiple dimensions is calculated through the obtained channel parameters. At the same time, the first node only needs to use reference signal 1 to determine the frequency-domain information and power information and use the second information to determine the time-domain information, without using each reference signal to determine all three pieces of information, effectively reducing the processing overhead.

[0119] In practical applications, when two different reference signals among the at least two reference signals are sent from one port and / or one beam in the communication node, the first node can perform sensing measurements and estimations according to the at least two reference signals and the offset of at least one of the transmission resource blocks, transmission resource units, and transmission powers between different reference signals indicated by the second information.

[0120] Exemplarily, assume that the first node receives two reference signals and second information for performing sensing measurements and estimations. The two reference signals are reference signal 1 and reference signal 2 respectively. Reference signal 1 and reference signal 2 are emitted from one port and / or one beam. When transmitting reference signal 1 and reference signal 2, there are relative offsets in the time domain and frequency domain, and there is no relative offset in power. Moreover, it is difficult to accurately estimate the channel parameters through the time-domain information corresponding to reference signal 1, while the channel parameters can be accurately estimated through the time-domain information corresponding to reference signal 2. At this time, the second information may indicate the offset of the transmission resource unit of reference signal 2 relative to the transmission resource unit of reference signal 1. The first node processes the received reference signal 1 to obtain the time-domain information, frequency-domain information, and power information corresponding to reference signal 1. At the same time, based on the offset of the transmission resource unit of reference signal 2 relative to the transmission resource unit of reference signal 1 indicated by the second information, and combining the time-domain information and frequency-domain information corresponding to reference signal 1, the first node determines the time-domain information and frequency-domain information corresponding to reference signal 2. Then, it uses the power information corresponding to reference signal 1 and the time-domain information and frequency-domain information corresponding to reference signal 2 to estimate the channel parameters, and calculates a multi-dimensional sensing result that simultaneously meets the sensing requirements of multiple dimensions through the obtained channel parameters. In this way, the first node only needs to use reference signal 1 to determine the power information and use the second information to determine the time-domain information and frequency-domain information, without using each reference signal to determine all three pieces of information, effectively reducing the processing overhead.

[0121] In practical applications, in step 103, the specific implementation of performing sensing measurements and estimations may include:

[0122] Measure the at least two reference signals to obtain measurement results. The measurement results may at least include at least one of signal strength, signal phase, received signal time, received signal angle, etc.;

[0123] Use the signal parameters and the second information to estimate the sensing result.

[0124] Exemplarily, the at least two reference signals and the second information received by the first node specifically include: the echo after the second information and the at least two reference signals are reflected by the target. By measuring the signal strength of at least one of the at least two reference signals, the transmission distance of the reference signal from the transmitting node to the target and then to the first node can be estimated. Combining the transmission distance and the received signal angle, the distance parameter and angle parameter of the target can be estimated; that is, the first node measures the received reference signal to obtain signal parameters (i.e., measurement results), and uses the signal parameters, while considering the correlation relationship between the reference signals included in the second information, to accurately estimate the sensing result.

[0125] In practical applications, when the first node performs sensing measurement and estimation, it can use parallel and / or serial processing methods. Among them, the parallel processing method specifically includes: the first node respectively performs sensing measurement and estimation on different reference signals among the at least two received reference signals to obtain different sensing results; Exemplarily, assume that the first node receives two reference signals for sensing measurement and estimation, and the two reference signals are RS 1 and RS 2 . Among them, the first node can use RS 1 to perform measurement and estimation of the angle parameter and distance parameter of the target, and at the same time use RS 2 to perform measurement and estimation of the speed parameter of the target; The serial processing method specifically includes: the result of the sensing measurement and estimation obtained by the first node using one of the at least two received reference signals can be used for the sensing measurement and estimation of another reference signal; Exemplarily, based on the above example, the first node can first use RS 1 to perform measurement and estimation of the angle parameter of the target, and then before using RS 2 to perform measurement and estimation of the distance parameter and speed parameter of the target, consider the angle parameter result obtained through RS 1 to compensate the angle phase of RS 2 , and then use the compensated RS 2 to perform measurement and estimation of the distance parameter and speed parameter of the target; Or, the first node can first use RS 1 to perform measurement and estimation of the angle parameter, distance parameter and speed parameter of all targets, and then based on the measurement and estimation result obtained through RS 1 , use RS 2 to update the parameters that do not meet the sensing requirements among the angle parameter, distance parameter and speed parameter of the target.

[0126] In actual application, after the first node obtains the sensing result, due to factors such as environmental interference and multipath effects, the obtained sensing result may not meet the requirements corresponding to the third information and / or the fourth information (which can also be understood as not being able to simultaneously meet the sensing requirements of all multiple dimensions). Specifically, it may be that the sensing result does not meet the measurement and estimation capabilities of the sensing parameters required by the first node and / or does not meet the parameter configuration of the reference signal required by the first node. At this time, the first node needs to obtain a new reference signal, and then perform sensing measurement and estimation through the new reference signal to obtain a sensing result that can simultaneously meet the sensing requirements of multiple dimensions.

[0127] Based on this, in one embodiment, the method may further include:

[0128] Sending fifth information to the second node, where the fifth information includes information associated with the update of the reference signal.

[0129] In actual application, the timing for the first node to send the fifth information may be when the sensing result obtained from the previous sensing measurement and estimation cannot simultaneously meet the sensing requirements of multiple dimensions, or when the first node generates new sensing requirements according to the requirements of the sensing service. The embodiments of the present application do not limit the timing for the first node to send the fifth information.

[0130] Here, in actual application, the first node may determine the new sensing requirements that the updated reference signal needs to meet according to the sensing result and the third information and / or the fourth information (which can be referred to as the original sensing requirements), that is, the measurement and estimation capabilities of the sensing parameters required by the updated first node and / or the parameter configuration of the reference signal. In this way, by including the new sensing requirements in the fifth information, the second node updates the reference signal according to the new sensing requirements.

[0131] Specifically, in one embodiment, the fifth information may specifically include at least one of the following:

[0132] Sixth information, where the sixth information is used to indicate whether the second node needs to update the reference signal;

[0133] Seventh information, where the seventh information characterizes the measurement and estimation capabilities of the sensing parameters required by the updated first node;

[0134] Eighth information, where the eighth information characterizes the parameter configuration of the reference signal required by the updated first node.

[0135] Exemplarily, when the third information includes: range resolution ΔR ≤ 2 m, velocity resolution Δv ≤ 1 m / s, and the sensing result includes: range resolution ΔR ≤ 3 m, velocity resolution Δv ≤ 2 m / s, the sensing result does not meet the sensing requirements. The first node may send the fifth information to the second node to request an update of the reference signal. The fifth information may specifically include: RSset_Update_Request = 1, Δv ≤ 0.1 m / s, ΔR ≤ 1 m (i.e., the seventh information). Here, RSset_Update_Request represents an update request, which can use the bit type (which can be expressed as BITSTRING), and the value range can be (YES - 1, NO - 0). That is, when the value of RSset_Update_Request is 1, it represents a request to the base station A to update the reference signal, and when the value is 0, it represents no request to the base station A to update the reference signal.

[0136] In practical applications, the first node may also inform the second node of the sensing result, so that the second node can determine the updated at least two reference signals based on the sensing result and at least two reference signals sent previously. That is to say, in one embodiment, the method may further include:

[0137] Sending the sensing result to the second node.

[0138] In practical applications, when the second node receives the fifth information, the second node may determine whether to update the reference signal. When it is determined to update the reference signal, it sends the updated at least two reference signals and the association relationship of the updated at least two reference signals to the first node.

[0139] Correspondingly, in one embodiment, the method may further include:

[0140] Receiving the updated at least two reference signals and the ninth information sent by the second node, where the ninth information includes the association relationship of the updated at least two reference signals.

[0141] In practical applications, after the first node receives the updated at least two reference signals and the ninth information sent by the second node, it may use the same method as in step 103 to perform sensing measurement and estimation to obtain an updated sensing result.

[0142] Correspondingly, an embodiment of the present application further provides a communication method applied to the second node, as Figure 3 shown, the method includes:

[0143] Step 301: Receiving the first information sent by the first node, where the first information represents the sensing capabilities required by the first node;

[0144] Step 302: Configure at least two reference signals and second information by using the first information, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node;

[0145] Step 303: Send the at least two reference signals and the second information to the first node.

[0146] Here, in practical applications, since the first information characterizes the sensing capabilities required by the first node, the second node can configure at least two reference signals that meet the requirements of the sensing capabilities (which can also be understood as at least two reference signals that can simultaneously meet the corresponding multiple-dimensional sensing requirements), that is, corresponding to the sensing capabilities required by the first node. After determining the at least two reference signals, the second information can be determined according to the association relationship of the at least two reference signals.

[0147] Specifically, the second information is determined only by the at least two reference signals. A mapping relationship between the at least two reference signals and the second information can be set. When the at least two reference signals are determined, the corresponding second information can be uniquely determined according to the mapping relationship.

[0148] Exemplarily, when the at least two reference signals are sent from different ports and / or different beams, and the second information indicates the QCL relationship between different reference signals among the at least two reference signals, the mapping relationship can be set to include the mapping relationship between any two different types and / or configurations of reference signals and the QCL type. For example, the QCL type corresponding to the CSI-RS and the synchronization signal block (SSB, Synchronization Signal / PBCH Block) is TypeC; the QCL type corresponding to the positioning reference signal (PRS, Positioning Reference Signal) and the demodulation reference signal (DMRS, Demodulation Reference Signal) is TypeA; thus, when the second node configures the PRS and the DMRS as reference signals for sensing measurement and estimation according to the first information, the second information including the QCL relationship between the DMRS and the PRS can be directly determined according to the above mapping relationship, and specifically, it can be represented by PRS→DMRS, qclType:QCL-TypeA. It should be noted that the QCL relationship can be determined according to the type and / or configuration of the reference signal in combination with the communication protocol regulations or in combination with the actual application environment, and the embodiments of the present application do not limit this.

[0149] In practical applications, after the first node obtains the sensing result, due to factors such as environmental interference and multipath effects, the obtained sensing result may not meet the requirements corresponding to the third information and / or the fourth information (it can also be understood that it cannot simultaneously meet the sensing requirements of all multiple dimensions), that is, the sensing result may not meet the measurement and estimation capabilities of the sensing parameters required by the first node and / or may not meet the parameter configuration of the reference signal required by the first node. At this time, the first node can send information to the second node to request a new reference signal, and then perform sensing measurement and estimation through the new reference signal to obtain a sensing result that can simultaneously meet the sensing requirements of multiple dimensions.

[0150] Based on this, in an embodiment, the method may further include:

[0151] Receiving the fifth information sent by the first node, where the fifth information includes information associated with the update of the reference signal.

[0152] When the fifth information indicates that the first node requests to update the sensing ability, the second node can reconfigure at least two reference signals and the association relationship of the updated at least two reference signals in the same manner as in step 302.

[0153] When the fifth information indicates that the first node does not require an update of the sensing ability, the second node can obtain the sensing result obtained by the first node after the previous sensing measurement and estimation, and reconfigure at least two reference signals and the association relationship of the updated at least two reference signals according to the sensing result.

[0154] Based on this, in an embodiment, the method may further include:

[0155] Receiving the sensing result sent by the first node.

[0156] In practical applications, the second node can determine to update the reference signal according to the current service situation and / or the required reference signal. Specifically, when the second node and the first node are at the same communication level, and the communication service priority in the second node is greater than the sensing service priority, the second node can choose to preferentially allocate communication resources for communication services, so as not to update the reference signal; at the same time, when the required reference signal sent by the second node cannot meet the updated sensing ability characterized by the fifth information of the first node, that is, when the second node cannot obtain a sensing result that meets the sensing requirements through the updated at least two reference signals, the second node does not update the reference signal.

[0157] When the second node determines to update the reference signal, in an embodiment, the method may further include:

[0158] Reconfigure at least two reference signals and ninth information for the first node, where the ninth information includes the association relationship of the updated at least two reference signals;

[0159] Send the updated at least two reference signals and the ninth information to the first node.

[0160] In actual application, the first node can perform sensing measurement and estimation according to the updated at least two reference signals and the ninth information sent by the second node to obtain an updated sensing result.

[0161] The embodiment of the present application also provides a communication method, as Figure 4 shown, the method includes:

[0162] Step 401: The first node sends first information to the second node, where the first information represents the sensing capability required by the first node;

[0163] Step 402: The second node receives the first information sent by the first node;

[0164] Step 403: The second node configures at least two reference signals and second information by using the first information, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0165] Step 404: The second node sends the at least two reference signals and the second information to the first node;

[0166] Step 405: The first node receives the at least two reference signals and the second information sent by the second node;

[0167] Step 406: The first node uses the second information and the at least two reference signals to perform sensing measurement and estimation to obtain a sensing result.

[0168] Here, it should be noted that: The specific processing procedures of the first node and the second node have been described in detail above and will not be elaborated here.

[0169] In the communication method provided by the embodiment of the present application, a first node sends first information to a second node, where the first information represents the sensing capabilities required by the first node; receives at least two reference signals and second information sent by the second node, where the second information represents the correlation relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; uses the second information and the at least two reference signals to perform sensing measurement and estimation to obtain a sensing result. In the solution provided by the embodiment of the present application, the second node configures and sends at least two reference signals and second information representing the correlation relationship between the reference signals to the first node according to the sensing capability information required by the first node, and the first node uses the at least two reference signals and the second information to perform multi-dimensional sensing measurement and estimation on the target. In this way, the first node receives multiple reference signals for sensing measurement and estimation, and by combining the sensing results of the multiple reference signals, an accurate multi-dimensional sensing result can be obtained, which can meet the sensing requirements of multiple dimensions at the same time. At the same time, by using the second information to represent the correlation relationship between the multiple reference signals, the first node only needs to use each reference signal to perform sensing measurement and estimation on some dimensions of the multiple dimensions respectively to obtain the sensing results for some dimensions, and an accurate multi-dimensional sensing result can be obtained by combining the sensing results for multiple partial dimensions, without the need to use each reference signal to perform sensing measurement and estimation in all dimensions, effectively reducing the processing overhead.

[0170] The present application will be further described in detail below with reference to application examples.

[0171] In the related art, in a cooperative sensing system, as Figure 5 shown, base station A sends reference signal RS1 and reference signal RS2. After RS1 and RS2 reach the target and are reflected by the target, base station B receives the echoes of RS1 and RS2 (i.e., Figure 5 Echo1 and Echo2 in

[0172] ), and base station B uses the received RS1 and RS2 to perform sensing measurement and estimation to obtain a multi-dimensional sensing result.

[0173] However, since base station B needs to perform sensing measurement and estimation on each received reference signal in all dimensions, the processing overhead is large.

[0174] Meanwhile, since the environment where the target is located is unknown, the RS1 and RS2 configured and sent by base station A may be interfered with and cannot simultaneously meet the sensing requirements of multiple dimensions corresponding to the sensing capabilities reported by base station B.

[0175] Based on this, the communication system of the application example of the present application includes base station A (i.e., the above-mentioned second node) and base station B (i.e., the above-mentioned first node), which can achieve accurate sensing measurement and estimation of the target in multiple dimensions, reduce the processing overhead at the same time, and provide a mechanism for reconfiguring and retransmitting reference signals when the sensing result does not meet the sensing requirements.

[0176] As Figure 6 shown, the process of base station A and base station B communicating to achieve cooperative sensing includes the following steps:

[0177] Step 601: Base station B sends sensing capability information (i.e., the above-mentioned first information) to base station A;

[0178] In practical applications, the sensing capability may specifically include the measurement and estimation capabilities of the sensing parameters required by base station B (i.e., the above-mentioned third information): for example, the range resolution △R ≤ 2m, the velocity resolution △v ≤ 1m / s, and / or the reference signal configuration required by base station B (i.e., the above-mentioned fourth information): for example, the center frequency is 2.6 GHz, the subcarrier spacing △f = 30 KHz, the bandwidth is within 100 MHz, and the transmission period of the reference signal is an integer multiple of 4 or 5 time slots.

[0179] Step 602: Base station A receives the sensing capability information sent by base station B;

[0180] Step 603: Base station A configures the reference signal combination and association information (i.e., the above-mentioned second information) according to the sensing capability information;

[0181] Here, in practical applications, base station A calculates according to the sensing capability information, determines the configuration requirements of the reference signal, selects multiple reference signals (i.e., the reference signal combination) that meet the configuration requirements for configuration, and configures the corresponding association information according to the association relationship between the configured multiple reference signals.

[0182] Exemplarily, when the sensing capability information received by base station A includes the sensing requirement of the range resolution △R ≤ 2m, base station A can determine the bandwidth requirement that the reference signal needs to meet according to the following formula:

[0183] △R = c / (2B) ≤ 2m

[0184] where △R represents the range resolution, c represents the speed of light, B represents the bandwidth of the reference signal, and it can be calculated that the bandwidth of the reference signal needs to meet B ≥ 75 MHz.

[0185] When the sensing capability information includes a sensing requirement with a speed resolution Δv ≤ 1 m / s, Base Station A can determine the period requirement that the reference signal needs to meet according to the following formula:

[0186] Δv = λ / (2T) ≤ 1 m / s

[0187] λ = c / f

[0188] Where, Δv represents the speed resolution, λ represents the wavelength, c represents the speed of light, f represents the center frequency, and T represents the transmission period of the reference signal. Through calculation, it can be known that when the center frequency of the reference signal is 2.6 GHz, the period of the reference signal needs to meet T ≥ 57 ms. Specifically, when the subcarrier spacing is 30 KHz, the time length of each corresponding slot is 0.5 ms. At this time, the period of the reference signal needs to meet T ≥ 114 slots.

[0189] Based on the bandwidth requirement and period requirement of the reference signal, Base Station A can screen out multiple reference signals that meet the requirements, and can select CSI-RS as one of the reference signals. Combining with the configuration requirements of CSI-RS itself, configure CSI-RS to occupy the full bandwidth in the frequency domain and send it in a period of 128 slots in the time domain. At the same time, a wider beam can be considered to increase the coverage of the possible target area. Therefore, SSB can be selected as another reference signal, that is, the reference signal combination includes CSI-RS and SSB, which can be expressed as RSset_1 = {CSI-RS, SSB}. After determining the reference signal combination, according to the mapping of the reference signal combination and the QCL relationship, it can be determined that the associated information specifically includes: SSB → CSI-RS, qclType: QCL-TypeC, indicating that the QCL type of CSI-RS and SSB is TypeC.

[0190] Step 604: Base Station A sends the reference signal combination and the associated information to Base Station B;

[0191] Step 605: Base Station B receives the reference signal combination and the associated information sent by Base Station A;

[0192] Step 606: Base Station B analyzes the associated information and uses the reference signal combination for sensing measurement and estimation to obtain the sensing result.

[0193] Exemplarily, when the at least two reference signals are SSB and CSI-RS, and the association information includes: SSB→CSI-RS, qclType: QCL-TypeC, the base station B first determines the characteristics of the cell where the target is located according to the SSB, locks the rough orientation of the target, and obtains the perception result of the target angle. Then, according to the QCL relationship of TypeC between the SSB signal and the CSI-RS signal, the more accurate Doppler shift and average time delay obtained through the CSI-RS signal are used to obtain the perception results in the target distance dimension and speed dimension. In this way, by combining the perception results corresponding to the SSB signal and the CSI-RS signal, a multi-dimensional perception result that meets the multi-dimensional perception requirements can be obtained, realizing high-precision perception of the target position information.

[0194] Step 607: The base station B sends a request for update information (i.e., the above-mentioned fifth information) to the base station A;

[0195] Here, the request for update information is used to request the base station A to send updated reference signals.

[0196] In practical applications, the base station B determines according to the perception result that it is necessary to further improve the perception performance to obtain a more accurate perception result. Exemplarily, the new perception requirements are: speed resolution △v ≤ 0.1 m / s, maximum unambiguous range R max ≥ 3000 m. When the first reference signal combination RSset_1 = {CSI-RS, SSB} is adopted, the minimum speed resolution that the CSI-RS can achieve is 0.25 m / s, and the maximum unambiguous range is 1000 m. While the minimum speed resolution that the SSB can achieve is 0.36 m / s. It can be seen that at this time, the first reference signal combination cannot meet the new perception requirements, and it is necessary to request the base station A to update the reference signal so that the base station B can use the updated reference signal for measurement and estimation to obtain a perception result that meets the new perception requirements. Among them, the request for update information can specifically include the measurement and estimation capabilities of the perception parameters required by the updated base station B (i.e., the above-mentioned seventh information) and / or the parameter configuration of the reference signal (i.e., the above-mentioned eighth information).

[0197] In practical applications, the base station B can send an update request message to the base station A, which can specifically include: RSset_Update_Request = 1, △v ≤ 0.1 m / s, R max≥3000m, where RSset_Update_Request is used to represent an update request (i.e., the above-mentioned sixth piece of information). Specifically, it can use the BITSTRING type, and whether base station B needs base station A to update the reference signal is indicated by the value range of the BITSTRING type (YES - 1, NO - 0). That is, when the value of RSset_Update_Request is 1, it indicates a request for base station A to update the reference signal, and when the value is 0, it indicates no request for base station A to update the reference signal.

[0198] In practical applications, base station B can also send the sensing result to base station A. On the one hand, it notifies base station A of the sensing result. On the other hand, base station A can reconfigure the reference signal according to the sensing result.

[0199] Step 608: Base station A receives the request update information sent by base station B;

[0200] Step 609: Base station A configures an updated reference signal combination and updated association information (i.e., the above-mentioned ninth piece of information) for base station B;

[0201] Here, in practical applications, the updated association information includes the association relationship of at least two reference signals in the updated reference signal combination;

[0202] In practical applications, base station A re - determines the configuration requirements of the reference signals in the updated reference signal combination according to the request update information. Exemplarily, it can be known from the request update information that the new sensing requirement of base station B is △v ≤ 0.1m / s, R max ≥3000m. When the sensing result needs to satisfy △v ≤ 0.1m / s and the center frequency of the reference signal is 2.6GHz, the period of the reference signal needs to satisfy T ≥ 560ms. Specifically, when the sub - carrier spacing is 30KHz, the time length of each corresponding slot is 0.5ms. At this time, the period of the reference signal needs to satisfy T ≥ 1140 slots;

[0203] When the sensing result needs to satisfy R max ≥3000m, base station A can determine the frequency - domain interval (which can also be understood as the comb teeth) requirement that the reference signal needs to satisfy according to the following formula:

[0204] R max = c / (2△f·N comb,f ) ≥ 3000m

[0205] Where, R max represents the maximum unambiguous distance, c represents the speed of light, △f represents the sub - carrier spacing, and N comb,f represents the frequency - domain interval. Thus, when the sub - carrier spacing of the reference signal is 30KHz, the frequency - domain interval of the reference signal needs to satisfy Ncomb,f ≤1.667。

[0206] Based on the periodic requirement and frequency-domain interval requirement of the reference signal, Base Station A can filter out multiple reference signals that meet the requirements, and can select PRS and DMRS as two reference signals in the updated reference signal combination, that is, RSset_2 = {PRS,? DMRS}. At the same time, configure the frequency-domain interval N of DMRS according to the frequency-domain interval requirement comb = 1, and configure the transmission period of PRS to be 1280 slots according to the periodic requirement. After determining the updated reference signal combination, according to the mapping relationship between the updated reference signal combination and the QCL relationship, it can be determined that the QCL type of DMRS and PRS is TypeA, and the specific updated association information includes PRS → DMRS, qclType: QCL-TypeA. At the same time, Base Station A determines the updated reference signal and sets the updated feedback message RSset_Update_Feedback = 1. The updated feedback message indicates whether Base Station A has updated the reference signal. The type can be BITSTRING, and the value range can be (YES-1, NO-0), that is, when the value of RSset_Update_Feedback is 1, it indicates that Base Station A has updated the reference signal, and when the value is 0, it indicates that Base Station A has not updated the reference signal.

[0207] Step 610: Base Station A sends the updated reference signal combination and the updated association information to Base Station B;

[0208] Step 611: Base Station B receives the updated reference signal combination and the updated association information sent by Base Station A;

[0209] Step 612: Base Station B parses the updated association information and performs sensing measurement and estimation using the updated reference signal combination to obtain a sensing result.

[0210] In practical applications, when the updated sensing result still does not meet the sensing requirements of Base Station B, the process of steps 607 to 612 can be repeated until a sensing result that meets the sensing requirements is obtained.

[0211] In the application example of this application, such as Figure 7As shown in the figure, base station A configures and sends a reference signal combination and association information characterizing the association relationship between the reference signals to base station B according to the sensing capability information required by base station B. Base station B uses the reference signal combination and the association information to perform multi-dimensional sensing measurements and estimations on the target. In this way, base station B receives the reference signal combination for sensing measurements and estimations. By combining the sensing results of multiple reference signals, an accurate multi-dimensional sensing result is obtained. At the same time, by using the association information to characterize the association relationship between multiple reference signals, base station B only needs to use each reference signal in the reference signal combination to perform sensing measurements and estimations for some of the multiple dimensions respectively, obtain the sensing results for some dimensions, and can obtain an accurate multi-dimensional sensing result by combining the sensing results for multiple partial dimensions, without the need to use each reference signal to perform sensing measurements and estimations in all dimensions, effectively reducing the processing overhead.

[0212] At the same time, for the case where the actual sensing result cannot meet the sensing requirements, base station B can report a request for updated information, so that base station A reconfigures and retransmits the reference signal combination to update the sensing result to meet the sensing requirements.

[0213] To implement the method on the first node side in the embodiments of the present application, the embodiments of the present application also provide a communication device, which is set on the first node, as Figure 8 shown. The device includes:

[0214] A first sending unit 801, configured to send first information to a second node, where the first information characterizes the sensing capability required by the first node;

[0215] A first receiving unit 802, configured to receive at least two reference signals and second information sent by the second node, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0216] A sensing unit 803, configured to use the second information and the at least two reference signals to perform sensing measurements and estimations to obtain a sensing result.

[0217] Wherein, in one embodiment, the first sending unit 801 is further configured to send fifth information to the second node, and the fifth information includes information associated with the update of the reference signal.

[0218] In one embodiment, the first sending unit 801 is further configured to send the sensing result to the second node.

[0219] In one embodiment, the first receiving unit 802 is further configured to receive at least two updated reference signals and ninth information sent by the second node, where the ninth information includes the association relationship of the at least two updated reference signals.

[0220] In practical applications, the first sending unit 801 and the first receiving unit 802 may be implemented by a communication interface in a communication device; the sensing unit 803 may be implemented by a processor in the communication device.

[0221] To implement the method on the second node side in the embodiments of the present application, the embodiments of the present application further provide a communication device disposed on the second node, as Figure 9 shown, the device includes:

[0222] A second receiving unit 901, configured to receive first information sent by a first node, where the first information represents the sensing capability required by the first node;

[0223] A configuration unit 902, configured to configure at least two reference signals and second information by using the first information, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capability required by the first node;

[0224] A second sending unit 903, configured to send the at least two reference signals and the second information to the first node.

[0225] Wherein, in one embodiment, the second receiving unit 901 is further configured to receive fifth information sent by the first node, where the fifth information includes information associated with the update of the reference signal.

[0226] In one embodiment, the second receiving unit 901 is further configured to receive a sensing result sent by the first node.

[0227] In one embodiment, the configuration unit 902 is further configured to reconfigure at least two reference signals and ninth information for the first node, where the ninth information includes the association relationship of the at least two updated reference signals;

[0228] The second sending unit 903 is further configured to send the at least two updated reference signals and the ninth information to the first node.

[0229] In practical applications, the second receiving unit 901 and the second sending unit 903 may be implemented by a communication interface in a communication device; the configuration unit 902 may be implemented by a processor in the communication device.

[0230] It should be noted that when the communication device provided in the above embodiments conducts communication, only the division of the above program units is used for illustration. In practical applications, the above processing can be allocated to different program units according to needs, that is, the internal structure of the device is divided into different program units to complete all or part of the above-described processing. In addition, the communication device provided in the above embodiments and the communication method embodiments belong to the same concept. For the specific implementation process, please refer to the method embodiments and will not be elaborated here.

[0231] Based on the hardware implementation of the above program modules, and in order to implement the method on the first node side in the embodiments of the present application, the embodiments of the present application further provide a first node, as Figure 10 shown. The first node 1000 includes:

[0232] A first communication interface 1001 capable of interacting with a second node;

[0233] A first processor 1002, connected to the first communication interface 1001 to implement information interaction with the second node, and used to execute the method provided by one or more technical solutions on the first node side when running a computer program; the computer program is stored on a first memory 903.

[0234] Specifically, the first communication interface 1001 is used for:

[0235] Sending a first message to the second node, where the first message represents the sensing ability required by the first node;

[0236] Performing sensing measurement and estimation using the second message and at least two reference signals to obtain a sensing result;

[0237] The first processor 1002 is used for:

[0238] Receiving at least two reference signals and a second message sent by the second node, where the second message represents the correlation relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing ability required by the first node.

[0239] Wherein, in one embodiment, the first communication interface 1001 is further used for:

[0240] Sending a fifth message to the second node, where the fifth message includes information related to the update of the reference signal.

[0241] In one embodiment, the first communication interface 1001 is further used for:

[0242] Sending the sensing result to the second node.

[0243] In one embodiment, the first communication interface 1001 is further configured to:

[0244] Receive at least two updated reference signals and ninth information sent by the second node, where the ninth information includes the association relationship of the at least two updated reference signals.

[0245] It should be noted that the specific processing procedures of the first processor 1002 and the first communication interface 1001 can be understood with reference to the above method.

[0246] Of course, in practical applications, each component in the first node is coupled together through the bus system 1004. It can be understood that the bus system 1004 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1004 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 10 all kinds of buses are labeled as the bus system 1004.

[0247] The first memory 1003 in the embodiment of the present application is used to store various types of data to support the operation of the first node 1000. Examples of these data include: any computer program for operating on the first node 1000.

[0248] The method disclosed in the embodiment of the present application above can be applied to the first processor 1002 or implemented by the first processor 1002. The first processor 1002 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit in the hardware of the first processor 1002 or in the form of software instructions. The above-mentioned first processor 1002 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 1002 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the first memory 1003. The first processor 1002 reads the information in the first memory 1003 and combines its hardware to complete the steps of the foregoing method.

[0249] In an exemplary embodiment, the first node 1000 may be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0250] Based on the hardware implementation of the foregoing program modules, and in order to implement the method on the second node side in the embodiments of the present application, the embodiments of the present application further provide a second node, as Figure 11 shown. The second node 1100 includes:

[0251] A second communication interface 1101 capable of interacting with the first node for information;

[0252] A second processor 1102 connected to the second communication interface 1101 to implement information interaction with the first node. When running a computer program, the second processor 1102 is used to execute the method provided by one or more technical solutions on the second node side; the computer program is stored on a second memory 1103.

[0253] Specifically, the second communication interface 1101 is used for:

[0254] Receiving first information sent by the first node, where the first information represents the sensing capabilities required by the first node;

[0255] Sending the at least two reference signals and second information to the first node;

[0256] The second processor 1102 is used for:

[0257] Configuring at least two reference signals and second information by using the first information, where the second information represents the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node.

[0258] Wherein, in one embodiment, the second communication interface 1101 is further used for:

[0259] Receiving fifth information sent by the first node, where the fifth information includes information associated with the update of the reference signal.

[0260] In one embodiment, the second communication interface 1101 is further configured to:

[0261] Receive the sensing result sent by the first node.

[0262] In one embodiment, the second processor 1102 is further configured to:

[0263] Reconfigure at least two reference signals and ninth information for the first node, where the ninth information includes the association relationship of the updated at least two reference signals;

[0264] The second communication interface 1101 is further configured to:

[0265] Send the updated at least two reference signals and ninth information to the first node.

[0266] It should be noted that: The specific processing procedures of the second processor 1102 and the second communication interface 1101 can be understood with reference to the above method.

[0267] Of course, in actual application, each component in the second node is coupled together through the bus system 1104. It can be understood that the bus system 1104 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1104 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 11 all kinds of buses are labeled as the bus system 1104.

[0268] The second memory 1103 in the embodiments of the present application is used to store various types of data to support the operation of the second node 1100. Examples of these data include: any computer program for operating on the second node 1100.

[0269] The method disclosed in the embodiments of the present application can be applied to or implemented by the second processor 1102. The second processor 1102 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the second processor 1102 or instructions in the form of software. The above-mentioned second processor 1102 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 1102 can implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 1103. The second processor 1102 reads the information in the second memory 1103 and combines its hardware to complete the steps of the foregoing method.

[0270] In an exemplary embodiment, the second node 1100 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for executing the foregoing method.

[0271] It can be understood that the memories (the first memory 1003 and the second memory 1103) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0272] To implement the method provided in the embodiments of the present application, the embodiments of the present application further provide a communication system, as Figure 12 shown, the system includes: a first node 1201 and a second node 1202.

[0273] Here, it should be noted that: the specific processing procedures of the first node 1201 and the second node 1202 have been described in detail above and will not be elaborated here.

[0274] In an exemplary embodiment, the embodiments of the present application further provide a storage medium, namely a computer storage medium, specifically a computer-readable storage medium. For example, it includes a first memory 1003 storing a computer program, and the above computer program can be executed by a first processor 1002 of the first node 1000 to complete the steps of the method on the first node side described above. Another example is a second memory 1103 storing a computer program, and the above computer program can be executed by a second processor 1102 of the second node 1100 to complete the steps of the method on the second node side described above. The computer-readable storage medium can be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0275] It should be noted that: "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence.

[0276] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0277] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A communication method, characterized in that, applied to a first node, includes: sending first information to a second node, the first information characterizing the sensing capabilities required by the first node; receiving at least two reference signals and second information sent by the second node, the second information characterizing the correlation relationship of the at least two reference signals, and the at least two reference signals corresponding to the sensing capabilities required by the first node; using the second information and the at least two reference signals to perform sensing measurement and estimation to obtain a sensing result.

2. The method according to claim 1, characterized in that, the second information is used to indicate at least one of the following: the quasi - co - location (QCL) relationship between different reference signals among the at least two reference signals, and the at least two reference signals are sent from different ports and / or different beams; for at least one of the at least two reference signals, the configuration of at least one of the transmission resource block, transmission resource unit, and transmission power, and the at least two reference signals are sent from one port and / or one beam; the offset of at least one of the transmission resource block, transmission resource unit, and transmission power between different reference signals among the at least two reference signals, and the at least two reference signals are sent from one port and / or one beam.

3. The method according to claim 1, characterized in that, the first information includes at least one of the following: third information, the third information characterizing the measurement and estimation capabilities of the sensing parameters required by the first node; fourth information, the fourth information characterizing the parameter configuration of the reference signals required by the first node.

4. The method according to any one of claims 1 to 3, characterized in that, the method further includes: sending fifth information to the second node, the fifth information including information associated with the update of the reference signal.

5. The method according to claim 4, characterized in that, the fifth information includes at least one of the following: sixth information, the sixth information used to indicate whether the second node needs to update the reference signal; seventh information, the seventh information characterizing the measurement and estimation capabilities of the sensing parameters required by the updated first node; eighth information, the eighth information characterizing the parameter configuration of the reference signals required by the updated first node.

6. The method according to claim 4, characterized in that, the method further includes: sending the sensing result to the second node.

7. The method according to claim 4, characterized in that, the method further includes: receiving the updated at least two reference signals and ninth information sent by the second node, the ninth information including the correlation relationship of the updated at least two reference signals.

8. A communication method, characterized in that, applied to a second node, includes: receiving first information sent by a first node, the first information characterizing the sensing capabilities required by the first node; using the first information to configure at least two reference signals and second information, the second information characterizing the correlation relationship of the at least two reference signals, and the at least two reference signals corresponding to the sensing capabilities required by the first node; Send the at least two reference signals and the second information to the first node.

9. The method according to claim 8, wherein, the second information is used to indicate at least one of the following: the QCL relationship between different reference signals among the at least two reference signals, and the at least two reference signals are sent from different ports and / or different beams; among the at least two reference signals, the configuration of at least one of the transmission resource block, transmission resource unit, and transmission power of at least one reference signal, and the at least two reference signals are sent from one port and / or one beam; the offset of at least one of the transmission resource block, transmission resource unit, and transmission power between different reference signals among the at least two reference signals, and the at least two reference signals are sent from one port and / or one beam.

10. The method according to claim 8, wherein, the first information includes at least one of the following: the third information, which characterizes the measurement and estimation capabilities of the sensing parameters required by the first node; the fourth information, which characterizes the parameter configuration of the reference signals required by the first node.

11. The method according to any one of claims 8 to 10, wherein, the method further includes: receiving the fifth information sent by the first node, and the fifth information includes information associated with the update of the reference signal.

12. The method according to claim 11, wherein, the fifth information includes at least one of the following: the sixth information, which is used to indicate whether the second node needs to update the reference signal; the seventh information, which characterizes the measurement and estimation capabilities of the sensing parameters required by the updated first node; the eighth information, which characterizes the parameter configuration of the reference signals required by the updated first node.

13. The method according to claim 11, wherein, the method further includes: receiving the sensing result sent by the first node.

14. The method according to claim 11, wherein, the method further includes: reconfiguring at least two reference signals and the ninth information for the first node, and the ninth information includes the association relationship of the updated at least two reference signals; sending the updated at least two reference signals and the ninth information to the first node.

15. A communication device, wherein, being arranged in a first node, includes: a first sending unit, configured to send first information to a second node, and the first information characterizes the sensing capabilities required by the first node; a first receiving unit, configured to receive at least two reference signals and second information sent by the second node, and the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; a sensing unit, configured to perform sensing measurement and estimation by using the second information and the at least two reference signals to obtain a sensing result.

16. A communication device, wherein, being arranged in a second node, includes: A second receiving unit, configured to receive first information sent by a first node, where the first information characterizes the sensing capabilities required by the first node; A configuration unit, configured to configure at least two reference signals and second information by using the first information, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; A second sending unit, configured to send the at least two reference signals and the second information to the first node.

17. A first node, characterized in that, it includes: A first communication interface, configured to send first information to a second node, where the first information characterizes the sensing capabilities required by the first node; and receive at least two reference signals and second information sent by the second node, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; A first processor, configured to perform sensing measurement and estimation by using the second information and the at least two reference signals to obtain a sensing result.

18. A second node, characterized in that, it includes: A second communication interface, configured to receive first information sent by a first node, where the first information characterizes the sensing capabilities required by the first node; and send the configured at least two reference signals and second information to the first node, where the second information characterizes the association relationship of the at least two reference signals, and the at least two reference signals correspond to the sensing capabilities required by the first node; A second processor, configured to configure at least two reference signals and second information by using the first information.

19. A first node, characterized in that, it includes: A first processor and a first memory for storing a computer program capable of running on the processor, wherein, when the first processor is used to run the computer program, it executes the steps of the method according to any one of claims 1 to 7.

20. A second node, characterized in that, it includes: A second processor and a second memory for storing a computer program capable of running on the processor, wherein, when the second processor is used to run the computer program, it executes the steps of the method according to any one of claims 8 to 14.

21. A storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7, or implements the steps of the method according to any one of claims 8 to 14.

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