Sensing method and apparatus, configuration method and apparatus, and related device

Abstract

The present application relates to the technical field of communications, and discloses a sensing method and apparatus, a configuration method and apparatus, and a related device. The sensing method in the embodiments of the present application comprises: a first node acquires first configuration information, the first configuration information being used for performing a first measurement; the first node performs the first measurement to obtain first information, the first information being information related to a target path, the target path comprising at least one of the following: a multipath passing through a sensing target, a multipath passing through a first reflector, and a direct path between the first node and a second node, and the first reflector being a static reflector in the environment; and the first node acquires a sensing result on the basis of the first information.

Description

Sensing methods, configuration methods, devices and related equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411222619.7, filed in China on September 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a sensing method, configuration method, apparatus and related equipment. Background Technology

[0004] With the development of mobile communication technology, future mobile communication systems, such as Beyond 5th-Generation (B5G) systems or 6th generation (6G) systems, will emerge. th In addition to communication capabilities, 6G communication systems will also possess sensing capabilities. This means they can sense the location, distance, and speed of target objects by sending and receiving sensing-related signals (e.g., signals related to sensing services or integrated communication and sensing services), or perform detection, tracking, identification, and imaging of target objects, events, or environments. In related technologies, sensing nodes receive sensing signals, perform channel estimation, or extract the amplitude and / or phase of the sensing signals to obtain sensing results. This sensing method is prone to poor sensing performance. Summary of the Invention

[0005] This application provides a sensing method, configuration method, apparatus, and related equipment that can perform sensing based on relevant information about the target path between a first node and a second node (i.e., sensing node), which helps to improve sensing performance.

[0006] Firstly, a perception method is provided, which includes:

[0007] The first node obtains first configuration information, which is used to perform the first measurement.

[0008] The first node performs a first measurement to obtain first information, which is related to the target path. The target path includes at least one of the following: a multipath passing through the sensed target, a multipath passing through a first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0009] The first node obtains the perception result based on the first information.

[0010] Secondly, a sensing device is provided, the device comprising:

[0011] The processing module is used to obtain first configuration information, which is used to perform a first measurement.

[0012] The processing module is further configured to perform a first measurement to obtain first information, wherein the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0013] The processing module is further configured to obtain the perception result based on the first information.

[0014] Thirdly, a configuration method is provided, which includes:

[0015] The second device performs the first operation, and the second device includes a second node or the first device;

[0016] The first operation includes at least one of the following:

[0017] Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information.

[0018] The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information.

[0019] Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0020] Fourthly, a configuration device is provided, the device comprising:

[0021] The processing module is used to perform the first operation;

[0022] The first operation includes at least one of the following:

[0023] Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information.

[0024] The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information.

[0025] Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0026] Fifthly, a sensing device is provided, the device being configured to perform the steps of the method described in the first aspect, or a configured device is provided, the device being configured to perform the steps of the method described in the third aspect.

[0027] In a sixth aspect, a first node is provided, the first node including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0028] In a seventh aspect, a first node is provided, including a processor and a communication interface, wherein the processor is used to acquire first configuration information, the first configuration information being used to perform a first measurement; to perform the first measurement and obtain first information, the first information being information related to a target path, the target path including at least one of the following: a multipath passing through a sensing target, a multipath passing through a first reflector, and a direct path between the first node and a second node; the first reflector being a static reflector in the environment; and to acquire a sensing result based on the first information.

[0029] In an eighth aspect, a second device is provided, the second device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third aspect.

[0030] A ninth aspect provides a second device, including a processor and a communication interface, wherein the processor is configured to perform a first operation; the first operation includes at least one of the following: sending first configuration information to a first node, the first configuration information being used to perform a first measurement, the first measurement being used to acquire first information; receiving the first information from the first node and sending third configuration information to the first node, the third configuration information being configuration information for sensing services, the third configuration information being determined based on the first information; wherein the first information is related to a target path, the target path including at least one of the following: a multipath passing through a sensing target, a multipath passing through a first reflector, and a direct path between the first node and a second node; the first reflector is a static reflector in the environment.

[0031] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the third aspect.

[0032] Eleventhly, a wireless communication system is provided, comprising: a first node and a second device, wherein the first node is configured to perform the steps of the sensing method as described in the first aspect, and the second device is configured to perform the steps of the configuration method as described in the third aspect.

[0033] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

[0034] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the third aspect.

[0035] In this embodiment, the first node acquires first configuration information, which is used to perform a first measurement. The first node performs the first measurement to obtain first information, which is related information about the target path. The target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between the first node and the second node. The first reflector is a static reflector in the environment. The first node obtains a sensing result based on the first information. Since this embodiment can obtain related information about the target path between the first node and the second node (i.e., the sensing node) through the first measurement, and then obtain a sensing result based on the related information about the target path between the first node and the second node, this is beneficial to improving sensing performance. Attached Figure Description

[0036] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0037] Figure 2 is a flowchart of a sensing method provided in an embodiment of this application;

[0038] Figure 3 is a schematic diagram of multipath propagation in a bistatic sensing scenario provided by an embodiment of this application;

[0039] Figure 4 is a schematic diagram of the multipath in the first dimension of the channel response provided in the embodiments of this application;

[0040] Figure 5 is a flowchart of a configuration method provided in an embodiment of this application;

[0041] Figure 6 is a structural diagram of a sensing device provided in an embodiment of this application;

[0042] Figure 7 is a structural diagram of a configuration device provided in an embodiment of this application;

[0043] Figure 8 is a structural diagram of the communication device provided in an embodiment of this application;

[0044] Figure 9 is a structural diagram of the terminal provided in an embodiment of this application;

[0045] Figure 10 is a structural diagram of the network-side device provided in an embodiment of this application. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0047] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0048] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0049] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0050] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0051] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. The core network functions include: BSF (Block Network Function), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0052] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0053] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0054] I. Integrated Communication and Sensing / Integrated Synesthesia

[0055] Wireless communication and radar sensing (C&S) have been developing in parallel, but with limited overlap. They share many commonalities in signal processing algorithms, equipment, and to some extent, system architecture. In recent years, traditional radar has been evolving towards more general wireless sensing. Wireless sensing broadly refers to retrieving information from received radio signals. For wireless sensing related to target location, common signal processing methods can be used to estimate dynamic parameters such as target signal reflection delay, angle of arrival, departure angle, and Doppler effect. For sensing target physical characteristics, this can be achieved by measuring the inherent signal patterns of devices / objects / activities. These two sensing methods can be referred to as sensing parameter estimation and pattern recognition, respectively. In this sense, wireless sensing refers to a more general sensing technology and application using radio signals.

[0056] Integrated Sensing and Communication (ISAC) has the potential to integrate wireless sensing into mobile networks, referred to here as Perceptive Mobile Networks (PMNs), see related technology 1 (Rahman, Md Lushanur, et al. "Enabling joint communication and radio sensing in mobile networks – a survey." arXiv preprint arXiv:2006.07559(2020)). Perceptive Mobile Networks can provide both communication and wireless sensing services simultaneously, and due to their wide broadband coverage and robust infrastructure, they hold promise as a ubiquitous wireless sensing solution. Perceptive Mobile Networks can be widely applied to communication and sensing in transportation, communication, energy, precision agriculture, and security. They can also provide complementary sensing capabilities to sensor networks in related technologies, possessing unique day / night operation capabilities and the ability to penetrate fog, foliage, and even solid objects. Some common sensing services are shown in Table 1 below.

[0057] Table 1 Common Sensing Service Classifications

[0058] In mobile communication networks, base stations (including one or more Transmission Reception Points (TRPs) on the base station) and User Equipment (UEs) (including one or more sub-arrays / panels on the UEs) can serve as sensing nodes participating in integrated sensing / communication services. Typical UEs include mobile terminals and portable tablets. By sending and receiving a first signal between nodes, sensing of a certain area or a certain physical target can be achieved. The first signal can be a signal that does not contain transmission information, such as LTE / NR synchronization and reference signals in related technologies, including synchronization signals and physical broadcast channel (PBCH block, SSB) signals, channel state information-reference signals (CSI-RS), demodulation reference signals (DMRS), sounding reference signals (SRS), positioning reference signals (PRS), phase tracking reference signals (PTRS), etc.; it can also be a single-frequency continuous wave commonly used in radar. The new signal can be a wave (CW), a frequency-modulated continuous wave (FMCW), or an ultra-wideband Gaussian pulse, etc.; it can also be a newly designed dedicated signal with good correlation characteristics and a low peak-to-average power ratio, or a newly designed integrated sensing signal that carries certain information and has good sensing performance. For example, the new signal is formed by splicing / combining / superimposing at least one dedicated sensing signal / reference signal and at least one communication signal in the time domain and / or frequency domain.

[0059] Nodes that send and / or receive sensing signals are called sensing nodes. Sensing nodes can be base stations or UEs. The node receiving the first signal is called the first node, and the node sending the first signal is called the second node. Equipment in the core network, such as Access and Mobility Management Functions (AMF), Sensing Functions (SF), communication application servers, and sensing application servers in the core network, are called first devices.

[0060] II. Target Configuration Information

[0061] The target configuration information mentioned above may include at least one of the following:

[0062] Waveform types, such as Orthogonal Frequency Division Multiplexing (OFDM), Single Carrier Frequency Division Multiple Accessing (SC-FDMA), Orthogonal Time Frequency Space (OTFS), Frequency Modulated Continuous Wave (FMCW), pulse signals, etc.

[0063] Subcarrier spacing: For example, the subcarrier spacing of an OFDM system is 30 kHz;

[0064] Guard interval: The time interval between the end of signal transmission and the latest echo signal of that signal being received; this parameter is proportional to the maximum sensing distance; for example, it can be calculated by 2dmax / c, where dmax is the maximum sensing distance (related to sensing requirements). For example, for self-transmitting and self-receiving sensing signals, dmax represents the maximum distance from the sensing signal transmission point to the signal transmission point; in some cases, the OFDM signal cyclic prefix (CP) can serve as the minimum guard interval.

[0065] Bandwidth: This parameter is inversely proportional to the distance resolution and can be obtained by c / 2 / delta_d, where delta_d is the distance resolution (related to perception requirements); and c is the speed of light.

[0066] Burst duration: This parameter is inversely proportional to the rate resolution (related to sensing requirements). This parameter represents the time span of the sensed signal and is mainly used to calculate the Doppler frequency offset. This parameter can be calculated using c / 2 / delta_v / fc, where delta_v is the rate resolution and fc is the carrier frequency of the sensed signal.

[0067] Time-domain interval: This parameter can be calculated using c / 2 / fc / v_range; where v_range is the maximum rate minus the minimum rate (related to sensing requirements); this parameter is the time interval between two adjacent sensing signals;

[0068] Transmitted signal power, for example, taking a value every 2dBm from -20dBm to 23dBm;

[0069] Signal format, such as SRS, DMRS, PRS, etc., or other predefined signals, and related sequence format information;

[0070] Signal direction; for example, sensing the direction of a signal or beam information;

[0071] Time resources, such as the time slot index or symbol index of the time slot where the sensing signal is located; among them, time resources are divided into two types: one is one-time time resources, such as one symbol sending an omnidirectional sensing signal; the other is non-one-time time resources, such as multiple sets of periodic time resources or discontinuous time resources (which may include start and end times), each set of periodic time resources sends a sensing signal in the same direction, and the beam direction on different sets of periodic time resources is different;

[0072] Frequency resources include the center frequency of the sensed signal, bandwidth, RB or subcarrier, reference point A, starting bandwidth location, etc.

[0073] Quasi-co-location (QCL) relationships, such as sensing signals comprising multiple resources, each resource being associated with a Synchronization Signal and PBCH block (SSB) QCL, where the QCL can be of type A, type B, type C, or type D;

[0074] Antenna configuration information.

[0075] It should be understood that " / " indicates division in the above formulas.

[0076] Optionally, the antenna configuration information mentioned above may include at least one of the following:

[0077] Antenna element index or antenna port index used for transmitting and / or receiving sensed signals;

[0078] Panel indexes and element indexes used for transmitting and / or receiving sensing signals;

[0079] The position information of the antenna elements relative to a local reference point on the antenna array used to transmit and / or receive sensed signals (can be in Cartesian coordinates (x, y, z) or spherical coordinates). express);

[0080] The panel used to transmit and / or receive sensed signals has its position information relative to a local reference point on the antenna array (which can be in Cartesian coordinates (x, y, z) or spherical coordinates). (represented), and the position information of the antenna elements within these selected panels used to transmit sensing signals relative to a unified reference point of the panel (e.g., the center point of the panel) (which can be expressed in Cartesian coordinates (x, y, z) or spherical coordinates). express);

[0081] Bitmap information of antenna elements; for example, the bitmap uses "1" to indicate that the element is selected for transmitting and / or receiving sensing signals, and "0" to indicate that the element is not selected (or vice versa);

[0082] The bitmap information of the array panel and the bitmap information of the array elements within the selected panel; for example: the bitmap of the array panel uses "1" to indicate that the array element is selected for transmitting and / or receiving sensing signals, and uses "0" to indicate that the array element is not selected (or vice versa);

[0083] Antenna element amplitude and phase gain information, i.e. antenna element pattern information.

[0084] III. Sensing Measurement

[0085] The sensed measurement quantity may include at least one of the following:

[0086] The first-level measurement quantities can include the complex results of the received signal / channel response, amplitude / phase, I-channel / Q-channel and their operation results (operations include addition, subtraction, multiplication, division, matrix addition, subtraction, multiplication, matrix transpose, trigonometric operations, square root operations, and power operations, as well as threshold detection results and maximum / minimum value extraction results of the above operation results; operations also include Fast Fourier Transform (FFT) / Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT) / Inverse Discrete Fourier Transform (IDFT), 2D-FFT, 3D-FFT, matched filtering, autocorrelation operation, wavelet transform and digital filtering, as well as threshold detection results and maximum / minimum value extraction results of the above operation results).

[0087] Second-level measurements (basic measurements) include time delay, Doppler, angle, intensity, and their multidimensional combinations.

[0088] Level 3 measurement (basic attributes / states) includes at least one of the following: distance, velocity, orientation, spatial position, and acceleration;

[0089] Level 4 measurement (advanced attributes / states) includes at least one of the following: presence of a perceived target, trajectory, action, expression, vital signs, quantity, imaging results, weather, air quality, shape, material, and composition.

[0090] The perception result can be the measurement value of the above-mentioned perception measurement quantity, which is obtained by further calculation (including addition, subtraction, multiplication, division, or according to a certain predetermined function). The perception result can also be the measurement value of at least one of the above-mentioned perception measurement quantities.

[0091] Optionally, the aforementioned sensing measurement quantities also include corresponding tag information, such as at least one of the following: sensing signal identification information, sensing measurement configuration identification information, sensing service information (e.g., sensing service ID), data subscription ID, measurement purpose (e.g., communication, sensing, synesthesia), time information, sensing node information (e.g., terminal ID, node location, device orientation), sensing link information (e.g., sensing link sequence number, transceiver node identifier), measurement quantity description information (form, e.g., amplitude value, phase value, complex value combining amplitude and phase; resource type, e.g., time domain measurement result, frequency domain resource measurement result), and measurement quantity index information (e.g., signal-to-noise ratio (SNR), sensing SNR).

[0092] IV. Perception Performance Evaluation Indicators

[0093] The perceived performance evaluation index may include at least one of the following:

[0094] For the target indicators, specific definitions and calculation methods, please refer to the relevant descriptions in the foregoing embodiments;

[0095] The statistical mean, standard deviation, or variance of multiple measurements of the same perceptual quantity;

[0096] The deviation between the predicted and actual measured values ​​of the perceived measurement / result, and the statistical mean, standard deviation, or variance of the deviation;

[0097] Evaluation metrics related to fuzzy functions include the Normalized Sidelobe Level (NSL), which is the height of the highest sidelobe of the normalized fuzzy function; or the ratio of the main lobe to the highest sidelobe of the fuzzy function (or the ratio of the highest sidelobe to the main lobe); in addition, it may also include the number of sidelobes / total power / total energy of the normalized fuzzy function with peak values ​​above a given threshold, the main lobe width of the fuzzy function (3dB width), etc.

[0098] The Cramér-Rao Lower Bound (CRLB) is the lowest variance achievable by all unbiased estimators. Mathematically, it is equal to the reciprocal of the Fisher information. This evaluation metric is related to the perceived SNR.

[0099] The capacity-distortion tradeoff quantitatively gives the maximum achievable rate of reliable transmission in a synthetic system under a given distortion constraint.

[0100] The equivalent mean square error (MSE) is calculated by converting the spectral efficiency of communication into an equivalent radar mean square error, and then combining it with the lower bound of the sensing Cramer-Rao algorithm.

[0101] Radar estimation-communication rate treats the sensing channel as a non-cooperative communication channel, and the mutual information between the sensing system and the target is the estimation rate.

[0102] Welch Bound;

[0103] Perceptual reproducibility evaluation metrics (such as the sum of Euclidean distances between samples of two consecutive sequences, or the regular path distance in Dynamic Time Warping (DTW), or other metrics that can reflect the similarity between two sequences, including but not limited to: Longest Common Subsequence (LCSS), Edit Distance on Real Sequences (EDR), Edit Distance with Real Penalty (ERP), Hausdorff Distance, Fréchet Distance, One Way Distance (OWD), Locality In-between Polylines (LIP), etc.);

[0104] The calculation result is obtained by performing any two of the above-mentioned indicators such as SNR, SINR, and CRLB on any one of the operations of addition, subtraction, multiplication, or division.

[0105] In some optional embodiments, the above-mentioned perceived performance evaluation metrics include at least target metrics.

[0106] V. Channel Correlation Evaluation Indicators

[0107] The aforementioned channel correlation evaluation metrics may include at least one of the following:

[0108] Correlation Matrix Distance (CMD): This measure measures the correlation / difference between two channel correlation matrices with dimensions n×n, where n>2. The calculation method is described in related technique 2 (Herdin, Markus, et al. "Correlation matrix distance, a meaningful measure for evaluation of non-stationary MIMO channels." 2005 IEEE 61st Vehicular Technology Conference. Vol. 1. IEEE, 2005). The channel correlation matrix can be any one of the following: spatial domain channel correlation matrix, time domain channel correlation matrix, or frequency domain channel correlation matrix.

[0109] Normalized Correlation Matrix Distance (NCMD): Same as CMD, calculation method see related technology 3 (Aldayel, Omar, Mats Bengtsson, and Saleh A. Alshebeili. "Evaluation of MIMO channel non-stationarity." 21st European Signal Processing Conference (EUSIPCO 2013). IEEE, 2013);

[0110] Channel subspace distance: used to measure the similarity between two channel subspaces of the same dimension. The calculation method is described in related technology 3. The channel subspace can be part or all of the channel subspace.

[0111] Channel vector similarity parameters include at least one of the following:

[0112] Channel vector distance parameters include: Euclidean distance, Manhattan distance, Chebyshev distance, Minkowski distance, Standardized Euclidean distance, Mahalanobis distance, and Lance Williams distance.

[0113] The cosine-like parameters of the channel vector angle include: cosine similarity and Tanimoto coefficient.

[0114] Channel vector correlation coefficient: also known as Pearson correlation coefficient;

[0115] The similarity parameters of the channel vector element set include: Jaccard Similarity Coefficient and Jaccard Distance;

[0116] The channel vector is the frequency domain channel transfer function (frequency domain channel response) or channel impulse response (time domain channel response) between any two antennas on the transmitter and / or receiver.

[0117] The channel parameter vector similarity parameter includes at least one of the following:

[0118] Channel parameter vector distance class parameters;

[0119] Channel parameter vector cosine class parameters;

[0120] Channel parameter vector correlation coefficient;

[0121] Similarity parameter of the set of elements in the channel parameter vector;

[0122] The channel parameter vector is a parameter vector consisting of at least two different channel parameters obtained by parameter estimation from the channel vector, or a parameter vector consisting of sampled samples of the same channel parameter at different times and / or frequencies and / or different local physical locations.

[0123] The channel parameters include:

[0124] Channel power domain parameters include at least one of the following: path loss, shadowing fading, average power, Rician K factor, and polarization crossover ratio;

[0125] Channel delay domain parameters include at least one of the following: average delay spread, root mean square delay spread, and coherence bandwidth;

[0126] Channel Doppler domain parameters include at least one of the following: average Doppler frequency shift, root mean square Doppler spread, and coherence time;

[0127] Channel directivity parameters include at least one of the following: transmitter-side direction spread, receiver-side direction spread, global departure azimuth spread, global departure elevation spread, global arrival azimuth spread, and global arrival elevation spread.

[0128] Multipath / multipath cluster parameters include at least one of the following: number of clusters, average number of sub-paths within a cluster, cluster delay spread, cluster departure azimuth spread, cluster departure pitch spread, cluster arrival azimuth spread, and cluster arrival pitch spread; it should be noted that "multipath", "path", "multipath cluster" and "cluster" have the same meaning, and for consistency, "cluster" will be used below.

[0129] Channel eigenvalue parameters include at least one of the following: channel eigenvalue, channel eigenvalue extension, ratio of maximum to minimum channel eigenvalue, channel eigenvector, channel singular value, channel singular value extension, ratio of maximum to minimum channel singular value, and channel singular vector;

[0130] Local airspace channel correlation indicators include at least one of the following:

[0131] Angular power spectrum, including at least one of the following: departure azimuth power spectrum, departure elevation power spectrum, arrival azimuth power spectrum, and arrival elevation power spectrum;

[0132] Wavenumber spectrum: A continuous or discrete spectrum obtained by performing Gans mapping on the angular power spectrum. See related technique 4 (Intarapanich, Apichart, et al. "Spatial correlation measurements for broadband MIMO wireless channels." IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall.2004. Vol.1. IEEE, 2004).

[0133] Spatial Correlation Function: The continuous or discrete spectrum obtained by performing an inverse fast fourier transform (IFFT) on the wavenumber spectrum; see related technique 4.

[0134] The calculation method for the Spatial Correlation Matrix is ​​described in Related Technique 4.

[0135] The perception method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0136] Please refer to Figure 2, which is a flowchart of a sensing method provided in an embodiment of this application. The method can be executed by a first node, as shown in Figure 2, and includes the following steps:

[0137] Step 201: The first node obtains the first configuration information, which is used to perform the first measurement.

[0138] In this embodiment, the first node can be a receiving node for a first signal, and the first node may include a terminal or a base station, etc. The first configuration information is used to perform a first measurement, which is used to obtain relevant information about the target path.

[0139] For example, the first configuration information mentioned above may include at least one of the following:

[0140] The first node and the second node contain digital precoding or digital beamforming information, which includes at least one of the following: a precoding matrix index or a precoding vector index, a beam index, the number of precoded beams or the number of beamformed beams, and a beam weighting coefficient index or coefficient value.

[0141] The target configuration information includes at least one of the following: waveform type, subcarrier spacing, guard interval, bandwidth, data burst duration, time domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, quasi-co-location (QCL) relationship, and antenna configuration information.

[0142] It should be noted that detailed information on the target configuration mentioned above can be found in the relevant explanations above, and will not be repeated here.

[0143] Step 202: The first node performs a first measurement to obtain first information, which is related information about the target path. The target path includes at least one of the following: multipath passing through the sensing target, multipath passing through the first reflector, and direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0144] In this step, the first node can perform a first measurement based on the first configuration information to obtain first information. For example, the first node can perform a first measurement to obtain a first measurement result, which includes at least one of a first sensing measurement value and a first sensing performance evaluation index. The first information is then determined based on the first measurement result. The first information is related to the target path. For example, the first information may include, but is not limited to, at least one of the following: the number of target paths, index, first parameter, second parameter, complex amplitude, power, delay, angle, and measured values ​​of target indicators. The first parameter indicates the tendency or priority of using the target path to perform sensing services, and the second parameter indicates the degree of similarity or difference between two target paths, or the degree of similarity or difference between the channels formed by the two target paths.

[0145] The following explanation uses a bistatic sensing scenario as an example to illustrate the target path between the first and second nodes. Referring to Figure 3, in bistatic sensing mode, the first signal emitted from the second node is reflected by the sensing target and reaches the first node. When there are stationary reflectors in the environment, such as the wall represented by the thick black line in Figure 3, the first signal can be reflected by the environmental reflector, then by the sensing target, and finally reach the first node, for example, route OBAP in Figure 3; or, the first signal can be reflected by the sensing target, then by the environmental reflector, and finally reach the first node, for example, route OACP in Figure 3; it may even be reflected by the environmental reflector both before and after the reflection by the sensing target, for example, route OBACP in Figure 3. Furthermore, the first signal may also reach the first node directly without being reflected by the sensing target, i.e., there is a line-of-sight (LOS) path (also called a direct path) between the second and first nodes, for example, route OP in Figure 3; or it may reach the first node only after being reflected by the environmental reflector, for example, routes OBP and ODEP in Figure 3.

[0146] The aforementioned multipath passing through the sensing target can be understood as the multipath between the second node and the first node that passes through the sensing target. Optionally, the multipath passing through the sensing target includes at least one of the following:

[0147] The first target path is used to represent the multiple paths from the second node to the first node via the sensing target;

[0148] The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node;

[0149] The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node;

[0150] The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

[0151] For example, referring to Figure 3, the multipath passing through the perceived target can be further divided into the following four categories:

[0152] The first target path is used to represent the multipath from the second node to the perceived target and then back to the first node. This multipath does not pass through environmental reflectors, such as the multipath OAP in Figure 3.

[0153] The second target path is used to represent the multipath from the second node to the environmental reflector, then to the perceived target, and finally to the first node; for example, the multipath OBAP in Figure 3;

[0154] The third target path is used to represent the multipath from the second node to the perceived target, then to the environmental reflector, and finally to the first node; for example, the multipath OACP in Figure 3;

[0155] The fourth target path is used to represent the multipath from the second node to the environmental reflector, then to the perceived target, then to the environmental reflector, and then to the first node; for example, the multipath OBACP in Figure 3.

[0156] The multipath passing through the first reflector can be understood as the multipath between the second node and the first node passing through the first reflector. The multipath passing through the first reflector does not pass through the sensing target, such as multipath OBP and multipath ODEP in Figure 3.

[0157] The direct path between the first node and the second node mentioned above does not pass through the sensing target or the reflector, for example, the multipath OP in Figure 3.

[0158] It should be noted that in Figure 3, sensing node O' is the mirror image of sensing node O relative to the reflector where reflection point B is located, and sensing node P' is the mirror image of sensing node P relative to the reflector where reflection point C is located.

[0159] The first, second, third, fourth, and fifth reflectors described above can all be any static reflector in the environment. For example, the static reflectors may include, but are not limited to, static reflective objects (e.g., buildings, trees, etc.), signal reflecting devices, etc. The signal reflecting devices may include, but are not limited to, reconfigurable intelligence surfaces (RIS), backscatter devices, and radio frequency identification (RFID) tags. It should be noted that the reflectors involved in the embodiments of this application can also be referred to as environmental reflectors.

[0160] In some optional embodiments, at least one of the first, second, third, fourth, and fifth reflectors may be a reflector known in the environment. A known reflector is understood to be one whose reflection coefficient, position, distance, relative angle, and other information are known or obtainable, for example, through measurement. For instance, the known reflector may be a static reflector with known location coordinates in the environment, or it may be a RIS, backscatter device, RFID tag, etc., with known location coordinates in the environment. Furthermore, at least one of the first, second, third, fourth, and fifth reflectors may include at least one reflector.

[0161] It should be noted that the classification of the multipath between the first node and the second node can be done in several ways. For example, the multipath between the first node and the second node can be divided into two categories: the first category is the multipath that passes through the sensing target, i.e., the multipath associated with the sensing target; the second category is the multipath that does not pass through the sensing target, i.e., the multipath that passes through the first reflector and the direct path between the first node and the second node. Alternatively, the multipath between the first node and the second node can be divided into three categories: the first category is the multipath that passes through the sensing target; the second category is the multipath that passes through the first reflector; and the third category is the direct path between the first node and the second node. Alternatively, the multipath between the first node and the second node can be divided into five categories, i.e., the first target path to the fifth target path, where the fifth target path includes at least one of the multipath that passes through the first reflector and the direct path between the first node and the second node. For ease of description, the following explanation uses the classification of the multipath between the first node and the second node into five categories (i.e., the first target path to the fifth target path) as an example. It is understood that each category of target path can include at least one target path.

[0162] It should also be noted that among the five types of multipath mentioned above, the multipath associated with the sensing target includes the first target path, the second target path, the third target path, and the fourth target path, which can provide the sensing receiver with sensing target information from different observation perspectives. When the sensing receiver has prior information about the environmental reflector (e.g., reflection coefficient, position, distance, relative angle, etc.), or can determine the aforementioned information about the environmental reflector (e.g., reflection coefficient, position, distance, relative angle, etc.) during measurement, it can utilize at least one of the second to fourth target paths in addition to the first target path. This can achieve better sensing performance than using only the first target path, including improving the signal-to-noise ratio (SNR) or the signal-to-interference-plus-noise ratio (SINR), improving detection performance, increasing sensing accuracy, and obtaining more comprehensive sensing information.

[0163] Furthermore, multipaths not directly associated with the sensing target, i.e., the fifth target path, are generally considered as self-interference and background clutter. However, if some prior sensing information is known, such as the position coordinates and state (including whether it is stationary or in motion, i.e., velocity magnitude and direction) of at least one of the first node, the second node, and the environmental reflector, the fifth target path can be used to eliminate non-ideal factors between the first node and the second node, such as carrier frequency offset, timing offset, sampling frequency offset, random phase, etc. Moreover, through sensing measurements, the first node can determine the state of the environmental reflector based on such multipaths. This measurement information can be further used to subsequently determine the sensing target information, or to determine the information of the second to fourth target paths. The environmental reflector can be a whole composed of one or more physical objects in the environment.

[0164] Step 203: The first node obtains the perception result based on the first information.

[0165] For example, the first node may send first information to the second node and receive configuration information for sensing services determined based on the first information from the second node, and perform sensing services based on the configuration information for sensing services to obtain sensing results. Alternatively, the first node may determine configuration information for sensing services based on the first information and send it to the second node, and then perform sensing services based on the configuration information for sensing services to obtain sensing results.

[0166] In this embodiment, the first node acquires first configuration information, which is used to perform a first measurement. The first node performs the first measurement to obtain first information, which is related information about the target path. The target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between the first node and the second node. The first reflector is a static reflector in the environment. The first node obtains a sensing result based on the first information. Since this embodiment can obtain related information about the target path between the first node and the second node (i.e., the sensing node) through the first measurement, and then obtain a sensing result based on the related information about the target path between the first node and the second node, this is beneficial to improving sensing performance.

[0167] Optionally, the first information includes at least one of the following:

[0168] The type of target path detected or identified;

[0169] Information on at least one type of target path.

[0170] For example, the type of target path may include two categories: multipath that passes through the sensing target and multipath that does not pass through the sensing target (i.e., the multipath that passes through the first reflector and the direct path between the first node and the second node); or, the type of target path may include three categories: multipath that passes through the sensing target, multipath that passes through the first reflector and direct path between the first node and the second node; or, the type of target path may include five categories: the first target path to the fifth target path, etc.

[0171] For example, the type of target path detected or identified can be indicated in the form of a bitmap. For instance, if the target path is divided into 5 types (i.e., the first target path to the fifth target path), a 5-bit binary sequence can be used to indicate the type of target path that the terminal successfully detected, identified, and measured. For example, "10000" indicates that the first node detected or identified at least one first target path and did not detect or identify the second to fifth target paths; "01101" indicates that the first node detected or identified at least one second target path, at least one third target path, and at least one fifth target path, and did not detect or identify the first and fourth target paths.

[0172] It is understood that the above-mentioned at least one type of target path is at least one type of target path among the types of target paths detected or identified by the first node. For example, when the target path is divided into 5 types (i.e., the first target path to the fifth target path), if the first node detects or identifies the first target path, the second target path and the third target path, the information of the above-mentioned at least one type of target path may include the information of at least one type of target path among the first target path, the second target path and the third target path. For example, the information of the above-mentioned at least one type of target path may include the information of the first target path and the information of the second target path.

[0173] For example, determining the target path in the channel response obtained from the first signal measurement may include the following steps:

[0174] Step a1: Determine the first path set. The paths in the first path set include those whose amplitude / power / intensity / energy exceeds a certain threshold after the channel response is transformed to the first dimension. For example, see Figure 4, which illustrates the multipath representation of the channel response in the first dimension (e.g., delay dimension, Doppler dimension, azimuth dimension, or elevation dimension). The horizontal axis represents the first dimension, and the vertical axis represents the normalized amplitude / power / intensity / energy. In Figure 4, path 0, path 1, path 2, and path 3 are the paths in the first path set. The certain threshold can be set to be higher than the noise threshold or higher than the noise interference threshold. It should be noted that the above step of determining the first path set is optional; that is, the target path can be determined only based on the next step (i.e., step a2).

[0175] Step a2: Select a path that meets the decision condition from the first path set or from all paths, and use it as the target path.

[0176] For example, in Figure 4, Path 0, Path 1, Path 2, and Path 3 are paths in the first set of paths, where Path 2 and Path 3 are sensing paths that satisfy the decision condition (e.g., their time delay meets a preset threshold), and Path 0 and Path 1 are paths associated with other scatterers.

[0177] For example, the above-mentioned judgment conditions may include at least one of the following:

[0178] The amplitude / power / intensity / energy of the path exceeds the corresponding preset threshold or is within the corresponding preset range; for example, the preset threshold is exceeding the noise threshold by 6dB.

[0179] The Doppler amplitude of the path exceeds the first preset threshold or is within the first preset range;

[0180] The path delay exceeds the second preset threshold or falls within the second preset range;

[0181] The angle of the radius exceeds the third preset threshold or is within the third preset range;

[0182] The difference in amplitude / power / intensity / energy between the path and the first path (e.g., line-of-sight (LOS) path, also known as the direct path) or the reference path (e.g., the path of a signal reflected by a known target (e.g., RIS / Backscatter device / other known passive targets, etc.)) exceeds the corresponding preset threshold or is within the corresponding preset range.

[0183] The Doppler difference between the path and the first path (e.g., LOS path) or the reference path (e.g., the signal path reflected by a known target (e.g., RIS / Backscatter device / other known passive target, etc.)) exceeds the fourth preset threshold or is within the fourth preset range.

[0184] The time delay difference between the path and the first path (e.g., the LOS path) or the reference path (e.g., the signal path reflected by a known target (e.g., RIS / Backscatter device / other known passive targets, etc.)) exceeds the fifth preset threshold or is within the fifth preset range.

[0185] The angle difference between the path and the first path (e.g., the LOS path) or the reference path (e.g., the signal path reflected by a known target (e.g., RIS / Backscatter device / other known passive targets, etc.)) exceeds the sixth preset threshold or is within the sixth preset range;

[0186] The amplitude / power / intensity / energy or phase of the path satisfies a specific modulation rule, which is the modulation rule of the Tag / Backscatter device / RIS, that is, the target path can be a path that has been modulated and reflected by the Tag / Backscatter device / RIS.

[0187] It should be noted that the above judgment conditions can also be set based on the results of statistics over a period of time. For example, the proportion of the above indicators (such as Doppler of the path, delay of the path, etc.) exceeding the corresponding preset threshold or falling within the corresponding preset range within a preset time window reaches the corresponding preset proportion, or the number of times the above indicators (such as Doppler of the path, delay of the path, etc.) exceed the corresponding preset threshold or fall within the corresponding preset range within a preset time window reaches the corresponding preset number.

[0188] The aforementioned preset threshold or preset range may be sent to the terminal by other devices, which determine the preset threshold or preset range based on prior perception information or perception requirements; or, the aforementioned preset threshold or preset range may be determined by the terminal based on prior perception information or perception requirements.

[0189] The prior information or requirements for perception may include at least one of the following: perception business or perception business type, perception target area, perception object type, and the number of perception targets.

[0190] Among these sensing services are, for example, target presence detection, localization, velocity detection, distance detection, angle detection, acceleration detection, material analysis, composition analysis, shape detection, category classification, and radar cross section (RCS). The sensing services include: Section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading, gait recognition, facial expression recognition, respiration monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc. The sensing service types can be classified according to certain characteristics, such as by function (detection-type sensing services, including intrusion detection and fall detection), parameter estimation-type sensing services (distance, angle, and speed calculation), and recognition-type sensing services (action recognition, identity recognition), etc. They can also be classified by sensing range (near-range sensing, medium-range sensing, and long-range sensing), by sensing fineness (coarse-grained sensing, fine-grained sensing, etc.), by power consumption / energy consumption, and by resource usage, etc. If the sensing service is respiratory monitoring, the corresponding normal respiratory rate can be determined based on the person's gender and age (e.g., male: 13-21 breaths / minute, female: 15-20 breaths / minute; adult: 12-20 breaths / minute, child: approximately 30-40 breaths / minute), which can be used as prior information for sensing.

[0191] The aforementioned target area can refer to the location area of ​​the perceived object, or the location area that needs to be imaged or reconstructed; for example, a preset range of time delay for determining the target path based on the approximate location / distance of the perceived object.

[0192] The above-mentioned object types are classifications of objects based on their possible motion characteristics. Each object type includes information such as the typical motion velocity range, motion acceleration range, and typical RCS range of the object.

[0193] The number of the aforementioned sensing targets can be obtained, for example, from the camera's sensing results as a form of prior information.

[0194] In some optional embodiments, the above decision conditions may further include conditions for identifying the type of target path. The identification of each type of target path is explained below using the classification of target paths into five categories, from the first target path to the fifth target path, as an example:

[0195] The second target path has the following characteristics: its departure angle differs from that of the sensing target, but the signal still reaches the receiver through the sensing target (a necessary condition); its arrival angle is the same as that of the sensing target; and its time delay and Doppler effect differ from those of the sensing target. Furthermore, the probability of encountering other sensing targets that meet the above conditions during the entire measurement period is relatively low. Therefore, the second target path can be identified based on its different departure angles (one of which is the direction of the environmental reflector), the same arrival angle (remaining the same throughout the entire measurement period), different time delays (the second target path's time delay is greater than that of the first target path throughout the entire measurement period), and different Doppler effects (but with correlation).

[0196] The third target path has the following characteristics: its departure angle is different from that of the sensing target, but the signal still reaches the receiver through the sensing target (a necessary condition); its arrival angle is the same as that of the sensing target; and its time delay and Doppler effect are different from those of the sensing target. Furthermore, the probability of encountering other sensing targets that meet the above conditions during the entire measurement period is relatively low. Therefore, the third target path can be identified based on the following characteristics: the departure angle is the same (remaining the same throughout the measurement period); the arrival angle is different (one of which is the direction of the environmental reflector); the time delay is different (the time delay of the third target path is greater than that of the first target path throughout the measurement period); and the Doppler effect is different (but correlated).

[0197] The fourth target path has the following characteristics: its departure angle differs from that of the sensing target, but its signal still reaches the receiver through the sensing target (a necessary condition); its arrival angle differs from that of the sensing target; and its time delay and Doppler effect differ from those of the sensing target. Furthermore, the probability of encountering other sensing targets that satisfy the above conditions is relatively high throughout the measurement period. Therefore, the fourth target path can be identified based on its different departure angles (one of which is the direction of an environmental reflector), different arrival angles (one of which is the direction of an environmental reflector), different time delays (the fourth target path's time delay is greater than that of the first target path throughout the measurement period), and different Doppler effects (but with correlation).

[0198] The first target path has the following characteristics: it has the shortest time delay and the strongest power among the sensing target association paths. Therefore, the first target path can be identified by combining its characteristics with prior sensing information.

[0199] The fifth target path has the following characteristics: it is a static path, has high power, and has fixed parameters. Therefore, the fifth target path can be identified by combining its characteristics with prior perception information.

[0200] Optionally, the information of the at least one type of target path includes at least one of the following:

[0201] The number of at least one type of target path;

[0202] The index of at least one type of target path;

[0203] The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services;

[0204] The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths;

[0205] The complex amplitude of at least one type of target path;

[0206] The power of at least one type of target path;

[0207] The time delay of at least one type of target path;

[0208] The angle of at least one type of target path;

[0209] The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

[0210] It is understood that each type of target path can include at least one target path. The following explanation uses the classification of target paths into five categories, from the first target path to the fifth target path, as an example.

[0211] The number of the at least one type of target path may include the number of each type of target path in the at least one type of target path. For example, if the at least one type of target path includes a first target path and a second target path, the number of the at least one type of target path may include the number of the first target path and the number of the second target path; or, if the at least one type of target path includes a first target path, a second target path and a fifth target path, the number of the at least one type of target path may include the number of the first target path, the number of the second target path and the number of the fifth target path.

[0212] The index of the aforementioned at least one type of target path may include the index of each target path within the at least one type of target path. For example, if the aforementioned at least one type of target path includes a first target path and a second target path, the number of the aforementioned at least one type of target path may include the index of the first target path and the index of the second target path; or, if the aforementioned at least one type of target path includes a first target path, a second target path, and a fifth target path, the index of the aforementioned at least one type of target path may include the index of the first target path, the index of the second target path, and the index of the fifth target path. It should be noted that if a type of target path includes at least two target paths, the index of that type of target path may include only one index, which can be used to indicate the aforementioned at least two target paths, i.e., different target paths within the same type of target path are indicated by the same index; or, the index of that type of target path may include at least two indexes, each used to indicate the aforementioned at least two target paths, i.e., different target paths within the same type of target path are indicated by different indexes.

[0213] The first parameter of the aforementioned at least one type of target path may include the first parameter of each of the at least one type of target path. For example, when a type of target path includes at least two target paths, the first parameter of that type of target path may include the first parameter of each of the at least two target paths, that is, different target paths of the same type of target path correspond to different first parameters.

[0214] It should be noted that the first node sends the first parameter of at least one type of target path to the second node for the second node to refer to. For example, the second node can determine or update the parameter configuration information used for perception based on the first parameter of at least one type of target path. For example, based on the first parameter of at least one type of target path and combined with other information of the first parameter of at least one type of target path, the second node can determine or update the precoding vector or matrix.

[0215] The second parameter of the aforementioned at least one type of target path may include the second parameter of each of the aforementioned at least one type of target path. For example, when a type of target path includes at least two target paths, the second parameter of that type of target path may include the degree of similarity or difference between each target path in that type of target path and each target path in the other at least one type of target path, or the degree of similarity or difference between the signal formed by each target path in that type of target path and the channel formed by each target path in the other at least one type of target path. Wherein, the aforementioned at least one type of target path may be a detected or identified target path.

[0216] For example, the second parameter can be measured by correlation or diversity. The correlation can include the correlation between a target path and at least one other target path in at least one domain (time, frequency, or spatial domain), or the correlation between a channel formed by a target path and at least one other channel formed by other target paths. This correlation can be calculated based on a channel correlation evaluation index, which can be found in the foregoing description and will not be repeated here. The correlation can indicate the similarity between two target paths; for example, it can indicate the similarity between at least one of the second to fifth target paths and the first target path. The diversity can be determined based on the correlation; for example, diversity = 1 - correlation.

[0217] It should be noted that if the similarity between two different target paths is greater or the difference is smaller, then using both target paths simultaneously for perception will result in less increase in the amount of perception information obtained compared to using only one of the two target paths for perception, and a smaller gain in perception performance. Conversely, if the similarity between two different target paths is smaller or the difference is greater, then using both target paths simultaneously for perception will result in a larger increase in the amount of perception information obtained compared to using only one of the two target paths for perception, and a larger gain in perception performance.

[0218] The complex amplitude of the at least one type of target path may include the complex amplitude of each of the at least one type of target path. The complex amplitude may include magnitude, phase, etc. For example, when a type of target path includes at least two target paths, the complex amplitude of that type of target path may include the complex amplitude of each of the at least two target paths.

[0219] The power of the at least one type of target path may include the power of each of the at least one type of target path. For example, when a type of target path includes at least two target paths, the power of that type of target path may include the power of each of the at least two target paths.

[0220] The time delay of the at least one type of target path may include the time delay of each of the at least one type of target path. For example, when a type of target path includes at least two target paths, the power of that type of target path may include the time delay of each of the at least two target paths.

[0221] The time delay of the aforementioned at least one type of target path may include the angle of each of the aforementioned at least one type of target path. For example, the angle may include at least one of departure from the horizontal azimuth, departure from the vertical pitch, arrival at the horizontal azimuth, arrival at the vertical pitch, etc. For example, when a type of target path includes at least two target paths, the angle of that type of target path may include the angle of each of the aforementioned at least two target paths.

[0222] The measured values ​​of the target indicators for at least one type of target path may include the measured values ​​of the target indicators for each of the at least one type of target path. It should be noted that, if a type of target path includes at least two target paths, the measured values ​​of the target indicators for that type of target path may include the measured values ​​of the target indicators for each of the at least two target paths.

[0223] Optionally, the target indicator includes at least one of the following:

[0224] Receive power related metrics;

[0225] Indicators related to interference and noise power;

[0226] The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal received quality (RSRQ).

[0227] The aforementioned received power-related metrics may include a first metric (i.e., the received power of the target path), which may be: the linear average (in W) of the received power of the target path in the resource unit carrying the first signal, as measured in the channel response to the first signal. The aforementioned resource unit may include time-domain resource units and / or frequency-domain resource units.

[0228] The aforementioned interference and noise power related indicators may include at least one of the following: a second indicator, a third indicator, and a fourth indicator.

[0229] The second indicator mentioned above can be: the sum of the linear average power of the other paths (excluding the target path) in the channel response of the first signal on the target resource and the linear average power of the interference and noise from other signals (excluding the first signal) on the target resource or other resources (e.g., resources configured for higher-layer signaling) (in W); wherein the target resource can be a time-frequency domain resource unit carrying the first signal.

[0230] The second metric = total received power - the first metric; where total received power can be expressed as: the linear average of the total received power on the target resource (including the received power of signals from the serving cell and non-serving cells, adjacent channel interference, and thermal noise, etc.) (in W); or, total received power = RSSI * K1, where K1 is a coefficient, and the resource for measuring RSSI is the target resource or other resources (e.g., resources configured by higher-layer signaling). The definition of RSSI can be found in 3GPP TS38.215.

[0231] The third indicator mentioned above can be: the linear average value (in W) of the interference and noise power from signals other than the first signal on the target resource or other resources (such as resources configured by higher-level signaling); wherein, the target resource can be a time-frequency domain resource unit carrying the first signal.

[0232] The third indicator = total received power - first signal received power; where the first signal received power is the RSRP of the first signal, and the definition of RSRP can be found in relevant protocols or standards.

[0233] The fourth indicator mentioned above can be the linear average power of the other paths (in W) in the channel response of the first signal on the target resource, excluding the target path.

[0234] Fourth indicator = RSRP of the first signal - First indicator.

[0235] The aforementioned indicators related to the quality of the sensing channel may include at least one of the following: the fifth indicator, the sixth indicator, and the eighth indicator.

[0236] Among them, the fifth indicator (i.e., the first type of perception SINR / SNR / SIR) = the first indicator / the second indicator;

[0237] The sixth indicator (i.e., the second type of perception SINR / SNR / SIR) = the first indicator / the third indicator;

[0238] The seventh indicator (i.e., the third type of perception SINR / SNR / SIR) = the first indicator / the fourth indicator;

[0239] The eighth indicator (i.e., perceived RSRQ) = K2 * the first indicator / total received power, where K2 is a coefficient.

[0240] In some optional embodiments, the first indicator described above can be calculated as follows:

[0241] The terminal performs channel estimation based on the transmitted first signal X(k) and the corresponding received signal Y(k) to obtain the channel response H(k) = Y(k) / X(k), where k = 0, 1, 2, ..., K-1 represents the resource unit index. After obtaining the channel response H(k), the terminal transforms it to a first dimension and determines the target path in the first dimension. Then, the power of the target path is calculated as a first indicator. If the target path includes multiple paths, the sum of the powers of the multiple paths is calculated as the first indicator.

[0242] The first dimension includes one of the following:

[0243] Time delay dimension;

[0244] Dopplerweis;

[0245] Azimuth dimension;

[0246] Pitch angle;

[0247] Among the time delay dimension, Doppler dimension, azimuth dimension, and pitch dimension, at least two are combined, such as time delay-Doppler dimension, time delay-Doppler-angle dimension, etc.

[0248] For example, H(f) is the channel response, where f = 0, 1, 2, ..., N-1 represents the frequency domain sampling points (e.g., subcarrier index). Then, by performing an inverse Fourier transform on H(f), it can be transformed to the time delay dimension (the first dimension). As another example, H(f,t) is the channel response, where f = 0, 1, 2, ..., N-1 represents the frequency domain sampling points (e.g., subcarrier index), and t = 0, 1, 2, ..., M-1 represents the time domain sampling points (e.g., OFDM symbol index). Then, by performing an inverse Fourier transform along the frequency domain and a Fourier transform along the time domain, it can be transformed to the time delay dimension. The first dimension is the delay-Doppler dimension. For example, H(f,t,s) is the channel response, where f = 0,1,2,…,N-1 represents the frequency domain sampling points (e.g., subcarrier index), t = 0,1,2,…,M-1 represents the time domain sampling points (e.g., OFDM symbol index), and s = 0,1,2,…,P-1 represents the spatial domain sampling points (antenna index or port index). Then, by performing an inverse Fourier transform along the frequency domain dimension, a Fourier transform along the time domain dimension, and a Fourier transform along the antenna domain dimension on H(f,t,s), it can be transformed to the delay-Doppler-angle dimension (the first dimension).

[0249] For frequency range 1, the reference point for the first indicator can be the antenna connector of the receiving node (such as a terminal). For frequency range 1, if the receiving node has multiple receiving channels, the first indicator measured and reported by the receiving node cannot be lower than the indicator of any single receiving channel. For frequency range 2, the first indicator measured for a certain receiving channel needs to be obtained by measuring the combined signal on multiple antenna elements corresponding to that receiving channel.

[0250] In some alternative embodiments, the first indicator described above can be calculated as follows:

[0251] Alternatively, when calculating the received power of the target path, the power of the target path in the first dimension can be combined with... The difference is used as the primary indicator, where N1 represents the number of target paths. It represents the average power of multiple paths outside the first path set in the first dimension.

[0252] In some optional embodiments, the received power of the first signal can be calculated as follows:

[0253] The received power of the first signal can be obtained by the receiving node after obtaining the channel response H(k), transforming it to the first dimension, determining the first path set in the first dimension, and then calculating the sum of the power of all paths in the first path set.

[0254] In some alternative embodiments, the received power of the first signal can be calculated as follows:

[0255] The received power of the first signal can also be the sum of the powers of all paths in the first path set in the first dimension. The difference, where N2 represents the number of paths in the first path set.

[0256] In some optional embodiments, the total received power can be calculated as follows: Total Received Power

[0257] In some optional embodiments, the second indicator may be calculated as follows:

[0258] The channel response H(k) is processed by the first filter to obtain H. filter1 (k), then according to H filter1 The received signal Y after the first filtering process is calculated from (k) and the first signal X(k). filter1 (k), i.e., Yfilter1 (k)=H filter1 (k)X(k). Then subtract the received signal Y(k) after the first filtering process from the received signal Y(k). filter1 (k) thus obtaining the interference and noise signal Y σ1 (k), i.e., Y σ1 (k)=Y(k)-Y filter1 (k), and then calculate the second index.

[0259] The first filtering process is used to eliminate noise and interference in the first dimension, as well as non-target paths. For example, the first filtering process sets the amplitude / power / intensity / energy of paths other than the target path in Figure 4 to zero. The channel response H after the first filtering process is shown below. filter1 (k) does not include noise, interference, or non-target paths, but only target paths.

[0260] In some optional embodiments, the third indicator described above can be calculated as follows:

[0261] The channel response H(k) is processed by a second filter to obtain H. filter2 (k), then according to H filter2 The received signal Y after the second filtering process is calculated from the first signal X(k) and the first signal X(k). filter2 (k), i.e., Y filter2 (k)=H filter2 (k)X(k). Then subtract the received signal Y(k) after the second filtering process from the received signal Y(k). filter2 (k) thus obtaining the interference and noise signal Y σ2 (k), i.e., Y σ2 (k)=Y(k)-Y filter2 (k), and then calculate the third index.

[0262] The second filtering process can be noise interference suppression processing on the first dimension (e.g., setting the amplitude / power / intensity / energy of other paths besides the first path set in Figure 4 to zero), or minimum mean square error (MMSE) filtering. The channel response H after the second filtering process... filter2 (k) does not contain noise and interference, but only contains paths from the first path set.

[0263] In some alternative embodiments, the third indicator described above can be calculated as follows:

[0264] Based on the average power of multiple paths outside the first path set in the first dimension The third index P was calculated. σ2,Right now Where N represents the number of sampling points in the first dimension.

[0265] It should be noted that if the receiving node identifies multiple sensing targets, or if the receiving node obtains the number of sensing targets based on prior sensing information or sensing requirements, the following methods are available:

[0266] Method 1: Calculate the target index for each sensing target separately. For example, in Figure 4, determine the path associated with each sensing target, and then calculate the target index corresponding to each sensing target. When calculating the second index for a certain sensing target (such as sensing target A), there are two methods: namely, the second index of sensing target A = total received power - the first index of sensing target A; or, if we assume there are two sensing targets: A and B, then the second index of sensing target A = total received power - the first index of sensing target A - the first index of sensing target B. Similarly, there are two ways to calculate the fourth index: the fourth index of sensing target A = the RSRP of the first signal - the first index of sensing target A; or, if we assume there are two sensing targets: A and B, then the fourth index of sensing target A = the RSRP of the first signal - the first index of sensing target A - the first index of sensing target B.

[0267] Method 2: Calculate a target index for multiple sensing targets. For example, in Figure 4, determine the paths associated with any sensing target, and then treat all these paths as target paths; this is equivalent to treating multiple sensing targets as a virtual sensing target, and then calculating the target index corresponding to this virtual sensing target.

[0268] For example, the aforementioned first information can be passed in the form of a list. Table 2 provides an example of dividing target paths into 5 categories (i.e., target paths 1 to 5), where:

[0269] The target path type can be represented using indices 1 to 5. This column information can also be indicated by a bitmap of length 5, that is, from the high bit to the low bit, it indicates the presence or absence of the first to the fifth target paths (or from the low bit to the high bit). "1" indicates that the corresponding target path exists, and "0" indicates that the corresponding target path does not exist (or vice versa). At this time, a new column of information can be added, namely the number of target paths, which indicates the number of the five types of target paths in the form of a vector. For example, if we assume that the bitmap from high bit to low bit and the target radial quantity from left to right correspond to the first to the fifth target paths, for the example in Table 2, the corresponding bitmap is "11111", and the number of target paths is "[1,2,1,1,1]".

[0270] Target path parameters may contain some omissions;

[0271] The first parameter can be pre-divided into several levels, for example, into N levels, where N is an integer greater than or equal to 1, and can be represented by numbers 0, 1, 2, ..., N-1, corresponding to the priority of the target path from high to low. For example, in Table 2, N = 4, that is, 4 levels are used to represent the first parameter; in addition, the first parameter can also be represented by a number in the range of 0 to 1, for example, the larger the number, the higher the tendency or priority of the corresponding target path for perception (or vice versa); it should be noted that the classification or value of the first parameter can be determined or calculated based on at least one of the above perception performance evaluation indicators. For example, the classification / value of the first parameter can be determined based on at least one of the above target indicators (for example, the fifth indicator of the target path), or based on at least one of the above target indicators through a series of operations (for example, addition, subtraction, multiplication, division, exponentiation, logarithm, etc.);

[0272] The second parameter uses a correlation indicator. In the example in Table 2, it refers to the correlation between the target path corresponding to that row and the first target path, with a value ranging from 0 to 1. Optionally, the first information can also include pairwise correlations between other types of target paths, meaning the table can be expanded to more columns;

[0273] Table 2 First Information Content and Format

[0274] It should be noted that which target paths the first node ultimately uses for sensing depends on the implementation of the first node algorithm. The advantage of the first node acquiring initial information is that it can determine / update the sensing parameter configuration information based on this initial information, assisting the first node in better detecting target paths and acquiring target path parameters.

[0275] Furthermore, the calculation of the aforementioned first and / or second parameters can be based on the target path parameter information in the first information. The first node can determine the target path for sensing based on the first and / or second parameters. For example, the first node can initially screen the target paths based on the first and second parameters, and then, based on the screened target paths, use the fuzzy function in the sensing performance evaluation index or the Cramer-Rao lower bound to determine the final target path for sensing. In the example shown in Table 2, in addition to selecting target path 0 (belonging to the first target path), the first node can also simultaneously select target path 2 (belonging to the second target path) and target path 3 (belonging to the third target path) for joint sensing. At the same time, target path 5 (belonging to the fifth target path) is selected to eliminate non-ideal sensing factors, ensuring optimal sensing performance.

[0276] Optionally, the first node obtains the first configuration information, including:

[0277] The first node receives first configuration information from at least one of the second node and the first device;

[0278] or,

[0279] The first node determines the first configuration information based on the second information, which is information related to the reflector.

[0280] In this embodiment, the second node and the first device mentioned above can be referred to in the relevant descriptions above, and will not be repeated here.

[0281] In one embodiment, the first node receives first configuration information from at least one of the second node and the first device. For example, if the first node is a terminal and the second node is a network-side device, the first configuration information can be sent to the terminal by either the network-side device or the first device. Exemplarily, the second node or the first device can determine the first configuration information based on second information, which is information related to the reflector, and send it to the first node. Optionally, in this embodiment, the second node or the first device can also send the second information to the first node.

[0282] In another embodiment, the first node can determine the first configuration information based on the second information. For example, if the first node is a network-side device and the second node is a terminal, the first node can obtain the second information and determine the first configuration information based on the second information. Optionally, in this embodiment, the first node can also send the first configuration information to the second node to ensure consistency in understanding between the first node and the second node.

[0283] Optionally, the second information may include at least one of the following:

[0284] The position coordinates of the reflector;

[0285] The reflection coefficient of the reflector;

[0286] Electromagnetic parameter information of the reflector;

[0287] Material information of the reflector;

[0288] Dimensions of the reflector;

[0289] The state information of the reflector.

[0290] The reflection coefficient of the aforementioned reflector, for example, the amplitude and phase of the reflection coefficient.

[0291] The electromagnetic parameters of the aforementioned reflector, such as dielectric constant, permeability, resistivity, refractive index, and transmittance.

[0292] The dimensions of the aforementioned reflector, such as height, width, and thickness.

[0293] The state information of the aforementioned reflector, such as orientation and motion status information.

[0294] For example, at least one of the above-mentioned second information may be the result obtained based on historical sensing measurements and pre-stored in the first device, first node, or second node; or, it may be the prior information of the reflector measured by other sensing nodes or sensors in the environment (e.g., positioning sensors or positioning modules (e.g., Global Positioning System (GPS), Beidou, etc.), distance sensors, altitude sensors, gyroscopes, etc.), or dedicated radar equipment, and sent to the first device, first node, or second node.

[0295] Optionally, the method further includes:

[0296] The first node acquires second information, which is information related to the reflector;

[0297] The first node performs a first measurement to obtain first information, including:

[0298] The first node performs a first measurement and obtains a first measurement result, which includes at least one of a first perception measurement value and a first perception performance evaluation index.

[0299] The first node determines the first information based on the first measurement result and the second information.

[0300] In this embodiment, the measured value of the first sensing measurement quantity can be understood as the measured value of the first sensing measurement quantity. The first sensing measurement quantity may include at least one sensing measurement quantity. The sensing measurement quantity can be referred to the relevant description in the foregoing content, and will not be repeated here.

[0301] The aforementioned first perception performance evaluation index can be calculated based on the measured value of the first perception measurement quantity. The aforementioned first perception performance evaluation index may include at least one perception performance evaluation index. The perception performance evaluation index can be referred to the relevant description in the foregoing content, and will not be repeated here.

[0302] In this embodiment, the first node obtains a first measurement result through a first measurement, and determines the first information based on the first measurement result and the obtained second information. Since the relevant information of the reference reflector is used to obtain the relevant information of the target path between the first node and the second node, this is beneficial to obtain the relevant information of the target path between the first node and the second node more accurately.

[0303] Optionally, the first node obtains the second information, including:

[0304] The first node receives the second information from at least one of the second node and the first device;

[0305] or,

[0306] The first node determines the second information based on the first measurement result.

[0307] In one embodiment, the first node can receive second information from at least one of the second node and the first device. For example, the second node or the first device can obtain prior information about the reflector through other sensing nodes or sensors in the environment (e.g., positioning sensors or positioning modules (e.g., GPS, Beidou, etc.), distance sensors, altitude sensors, gyroscopes, etc.), or dedicated radar equipment, and send it to the first node. This helps to reduce the implementation complexity of the first node.

[0308] In another embodiment, the first node can obtain the second information through measurement. Specifically, the first node can obtain the first measurement result through the first measurement, and determine the second information based on the first measurement result. Then, the first information can be determined based on the second information and the first measurement result. That is, the first information and the second information can be obtained in one measurement, which can not only improve the efficiency of information acquisition, but also save resource consumption.

[0309] For example, if the first node can obtain first information and second information through a first measurement, the aforementioned first configuration information may include at least one of the following:

[0310] Configuration information for beam scanning and beam measurement of at least one of the first node and the second node, including: beamwidth, number of beams, beam index set for beam scanning and beam measurement, and beam direction;

[0311] The time-frequency resource configuration information of the second signal includes at least: signal period, duration of the second signal transmitted by a single beam, number of repetition periods (i.e., number of repetition symbols / number of repetition time slots during beam dwell time), starting symbol / starting time slot of the second signal, bandwidth of the second signal, starting RB or subcarrier position, frequency domain resource interval, number of frequency domain RBs / number of subcarriers, time-frequency pattern type, etc.

[0312] The mapping relationship between beam index and the time-frequency resources of the second signal;

[0313] Digital precoding / digital beamforming information of at least one of the first and second nodes, including: precoding matrix / vector index, beam index, number of precoding / beamforming beams, beam weighting coefficient index or coefficient value;

[0314] Target configuration information, for details please refer to the relevant explanations above. The second signal mentioned above is the sensing / reference signal used for channel measurements to acquire prior information (i.e., second information) about environmental reflectors.

[0315] Optionally, the first node obtains the second information, including:

[0316] The first node acquires second configuration information, which is used for the second measurement.

[0317] The first node performs a second measurement based on the second configuration information to obtain a second measurement result, the second measurement result including at least one of the second perception measurement value and the second perception performance evaluation index;

[0318] The first node determines the second information based on the second measurement result.

[0319] For example, the second configuration information mentioned above may include at least one of the following:

[0320] Configuration information for beam scanning and beam measurement of at least one of the first node and the second node, including: beamwidth, number of beams, beam index set for beam scanning and beam measurement, and beam direction;

[0321] The time-frequency resource configuration information of the second signal includes at least: signal period, duration of the second signal transmitted by a single beam, number of repetition periods (i.e., number of repetition symbols / number of repetition time slots during beam dwell time), starting symbol / starting time slot of the second signal, bandwidth of the second signal, starting RB or subcarrier position, frequency domain resource interval, number of frequency domain RBs / number of subcarriers, time-frequency pattern type, etc.

[0322] The mapping relationship between beam index and second signal time-frequency resources;

[0323] Digital precoding / digital beamforming information of at least one of the first and second nodes, including: precoding matrix / vector index, beam index, number of precoding / beamforming beams, beam weighting coefficient index or coefficient value;

[0324] For target configuration information, please refer to the relevant explanations above.

[0325] The second signal mentioned above is the sensing / reference signal used for channel measurement (i.e., second measurement) to obtain prior information (i.e., second information) of environmental reflectors.

[0326] The second measurement mentioned above can be any channel measurement used to obtain the second information.

[0327] The aforementioned second sensing measurement value can be understood as the measured value of the second sensing measurement quantity. This second sensing measurement quantity may include at least one sensing measurement quantity. The specific content of the sensing measurement quantity can be found in the relevant explanations above, and will not be repeated here. The aforementioned second sensing performance evaluation index can be calculated based on the measured value of the second sensing measurement quantity. Specifically, the aforementioned second sensing performance evaluation index may include at least one sensing performance evaluation index. The specific content of the sensing performance evaluation index can be found in the relevant explanations above, and will not be repeated here.

[0328] The second piece of information mentioned above is related to the reflector. For details, please refer to the relevant descriptions in the foregoing embodiments, which will not be repeated here.

[0329] For example, after the first node determines the second information based on the second measurement result, it can determine the first information based on the second information and the first measurement result, or it can send the second information to the second node or the first device so that the second node or the first device can determine the first configuration information based on the second information.

[0330] In this embodiment, the first node obtains the second information through the second measurement and the first information through the first measurement. That is, the first information and the second information are obtained through different measurements, which helps to ensure the accuracy of information acquisition.

[0331] Optionally, the method further includes:

[0332] The first node sends the second information to at least one of the second node and the first device.

[0333] For example, the first node sends the second information to at least one of the second node and the first device, so that the second node or the first device can determine the first configuration information based on the second information and send it to the first node, which helps to improve the accuracy of the first measurement.

[0334] In some alternative embodiments, the first node may also send the second measurement result to at least one of the second node and the first device.

[0335] Optionally, the first node obtains the perception result based on the first information, including:

[0336] The first node sends the first information to at least one of the second node and the first device;

[0337] The first node receives third configuration information from at least one of the second node and the first device, the third configuration information being configuration information for sensing services;

[0338] The first node performs perception services based on the third configuration information and obtains perception results.

[0339] For example, the third configuration information mentioned above may include at least one of the following:

[0340] The first node and the second node contain digital precoding or digital beamforming information, which includes at least one of the following: a precoding matrix index or a precoding vector index, a beam index, the number of precoded beams or the number of beamformed beams, and a beam weighting coefficient index or coefficient value.

[0341] The target configuration information includes at least one of the following: waveform type, subcarrier spacing, guard interval, bandwidth, data burst duration, time-domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, QCL relationship, and antenna configuration information. It should be noted that detailed information regarding the target configuration information can be found in the preceding descriptions and will not be repeated here.

[0342] In this embodiment, when the first node obtains the first information through measurement, it can send the first information to the second node or the first device. Then, the second node or the first device can determine the third configuration information based on the first information, that is, configure the perception service by referring to the relevant information of the target path, and send the third configuration information to the first node. In this way, when the first node performs the perception service based on the third configuration information, it is beneficial to improve the perception performance.

[0343] In some optional embodiments, the second node or the first device can determine the third configuration information based on the first information and the second information. This can help improve the perception performance of the first node when it performs perception services based on the third configuration information.

[0344] In some alternative embodiments, the first node may also send the first measurement result to at least one of the second node and the first device.

[0345] Optionally, the first node obtains the perception result based on the first information, including:

[0346] The first node obtains the perception result based on the first information and the first measurement result.

[0347] The first measurement result mentioned above is the first measurement result obtained by the first node performing the first measurement. The specific content of the first measurement result can be found in the relevant description of the foregoing embodiments, and will not be repeated here.

[0348] In this embodiment, the first node can acquire first information during the execution of perception services. That is, the first measurement mentioned above is a perception measurement. Then, the perception result can be obtained based on the first information and the first measurement result. This not only saves the resource overhead of the first information measurement, but also helps to improve the perception performance while ensuring the efficiency of perception service execution.

[0349] It is understood that in this embodiment, the first configuration information is used not only to obtain the first information, but also to obtain the perception result.

[0350] Optionally, the first node obtains the perception result based on the first information, including:

[0351] The first node determines the fourth configuration information based on the first information, and the fourth configuration information is configuration information used for sensing services;

[0352] The first node sends the fourth configuration information to at least one of the second node and the first device;

[0353] The first node performs perception services based on the fourth configuration information and obtains perception results.

[0354] For example, the fourth configuration information mentioned above may include at least one of the following:

[0355] The first node and the second node contain digital precoding or digital beamforming information, which includes at least one of the following: a precoding matrix index or a precoding vector index, a beam index, the number of precoded beams or the number of beamformed beams, and a beam weighting coefficient index or coefficient value.

[0356] The target configuration information includes at least one of the following: waveform type, subcarrier spacing, guard interval, bandwidth, data burst duration, time-domain spacing, transmitted signal power, signal format, signal direction, time resources, frequency resources, QCL relationship, and antenna configuration information. It should be noted that detailed information regarding the target configuration information can be found in the preceding descriptions and will not be repeated here.

[0357] In this embodiment, the first node determines the configuration information for sensing services, i.e., the fourth configuration information, based on the first information, and sends the fourth configuration information to at least one of the second node and the first device. This improves sensing performance when the sensing service is executed based on the fourth configuration information. For example, if the first node is a network-side device and the second node is a terminal, the network-side device can determine the configuration information for sensing services based on the first information and send it to the terminal, thereby enabling the sensing service to be executed based on the configuration information for sensing services.

[0358] In some optional embodiments, the first node can determine the fourth configuration information based on the first information and the second information. This is beneficial to further improve the perception performance when performing perception services based on the fourth configuration information.

[0359] Optionally, the first node obtains the perception result based on the first information, including:

[0360] The first node determines the fourth configuration information based on the first information, and the fourth configuration information is configuration information used for sensing services;

[0361] The first node sends the first information and the fourth configuration information to at least one of the second node and the first device;

[0362] The first node receives third configuration information from at least one of the second node and the first device, the third configuration information being configuration information for sensing services;

[0363] The first node performs a perception service based on at least one of the third configuration information and the fourth configuration information to obtain a perception result.

[0364] The third and fourth configuration information mentioned above can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0365] In this embodiment, the first node can determine the suggested configuration information for sensing services, namely the fourth configuration information, based on the first information, and can send the fourth configuration information to the second node or the first device. The second node or the first device can send the third configuration information to the first node based on the fourth configuration information and the second information. Then, the first node can perform the sensing service based on at least one of the third configuration information and the fourth configuration information to obtain the sensing result.

[0366] In some optional embodiments, after the first node sends the first information and the fourth configuration information to the second node or the first device, if the first node receives the third configuration information from the second node or the first device, it can perform the sensing service based on the third configuration information. If the first node does not receive the configuration information for the sensing service from the second node or the first device, or receives the confirmation information for the fourth configuration information from the second node or the first device, it can perform the sensing service based on the fourth configuration information.

[0367] Optionally, upon obtaining the sensing result, the first node may send the sensing result to at least one of the second node and the first device.

[0368] Please refer to Figure 5, which is a flowchart of a configuration method provided in an embodiment of this application. This method can be executed by a network-side device, and as shown in Figure 5, it includes the following steps:

[0369] Step 501: The second device performs the first operation, wherein the second device includes a second node or the first device;

[0370] The first operation includes at least one of the following:

[0371] Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information.

[0372] The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information.

[0373] Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0374] It should be noted that when the second device includes a second node, the first operation is performed by the second node; when the second device includes a first device, the first operation is performed by the first device. For details regarding the second node and the first device, please refer to the relevant descriptions in the foregoing embodiments, which will not be repeated here.

[0375] Optionally, the multipath passing through the perceived target includes at least one of the following:

[0376] The first target path is used to represent the multiple paths from the second node to the first node via the sensing target;

[0377] The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node;

[0378] The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node;

[0379] The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

[0380] Optionally, the first information includes at least one of the following:

[0381] The type of target path detected or identified;

[0382] Information on at least one type of target path.

[0383] Optionally, the information of the at least one type of target path includes at least one of the following:

[0384] The number of at least one type of target path;

[0385] The index of at least one type of target path;

[0386] The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services;

[0387] The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths;

[0388] The complex amplitude of at least one type of target path;

[0389] The power of at least one type of target path;

[0390] The time delay of at least one type of target path;

[0391] The angle of at least one type of target path;

[0392] The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

[0393] Optionally, the target indicator includes at least one of the following:

[0394] Receive power related metrics;

[0395] Indicators related to interference and noise power;

[0396] The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal reception quality (RSRQ).

[0397] Optionally, the third configuration information is determined based on the first information and the second information, wherein the second information is information related to the reflector.

[0398] Optionally, the method further includes:

[0399] The second device sends the second information to the first node;

[0400] or,

[0401] The second device receives the second information from the first node;

[0402] The second information is information related to the reflector.

[0403] Optionally, the second information includes at least one of the following:

[0404] The position coordinates of the reflector;

[0405] The reflection coefficient of the reflector;

[0406] Electromagnetic parameter information of the reflector;

[0407] Material information of the reflector;

[0408] Dimensions of the reflector;

[0409] The state information of the reflector.

[0410] It should be noted that the implementation method of this method can be found in the relevant description of the embodiment shown in Figure 2, and will not be repeated here.

[0411] The following examples illustrate the embodiments of this application under different circumstances:

[0412] Example 1: Determine the first information based on prior information about the environmental reflectors.

[0413] The prior information of the aforementioned environmental reflectors can be based on the results of historical sensing measurements and pre-stored in the first device or the second node; or, other sensing nodes or sensors in the environment (e.g., positioning sensors or positioning modules (e.g., GPS, Beidou, etc.), distance sensors, altitude sensors, gyroscopes, etc.), or dedicated radar equipment can measure the prior information of the reflectors and send it to the first device or the second node.

[0414] The perception method provided in this example includes the following steps:

[0415] Step a1: The second node / first device acquires prior information (i.e., second information) about the environmental reflector.

[0416] The prior information of the environmental reflector obtained by the second node includes the prior information of the environmental reflector received by the second node from the first device. The prior information of the environmental reflector can be found in the relevant description of the second information in the foregoing embodiments, and will not be repeated here.

[0417] Step a2: The second node determines the first configuration information based on the prior information of the environmental reflector. The first configuration information is used to perform the first measurement. The second node sends the first configuration information to the first node. The first configuration information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0418] Step a3: The second node and the first node perform a first measurement based on the first configuration information. The first node obtains a first measurement result, which includes at least one of the first measurement quantity measurement value and the first perception performance evaluation index. The first node can determine first information based on the first measurement result. The first information can be referred to the relevant description in the foregoing embodiments, which will not be repeated here.

[0419] Optionally, the first node can determine the first information based on the first measurement result and the prior information of the environmental reflector.

[0420] Step a4: The first node feeds back the first information to the second node and / or the first device.

[0421] Optionally, the first node may also feed back the first measurement result to the second node and / or the first device.

[0422] Optionally, the first node can determine the fourth configuration information based on the first information, or the first node can determine the fourth configuration information based on the first information and prior information of the environmental reflector. The fourth configuration information is parameter configuration information for performing sensing services, and can be fed back to the second node and / or the first device. The fourth configuration information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0423] Step a5: The second node and / or the first device determine third configuration information, which is parameter configuration information used for sensing services. The second node and / or the first device send the third configuration information to the first node. The third configuration information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0424] For example, the second node and / or the first device may determine the third configuration information based on the first information, or may determine the third configuration information based on the first information and prior information of the environmental reflector.

[0425] It should be noted that step a5 above can be an optional step. For example, if the first node determines the fourth configuration information, step a5 may not be executed. It should also be noted that step a5 may be executed if the first node determines the fourth configuration information.

[0426] Step a6: The second node and the first node perform perception services based on the third configuration information and / or the fourth configuration information. The first node obtains at least one of the following: perception result, measurement value of perception measurement, and perception performance evaluation index.

[0427] Optionally, the first node may send at least one of the following to the second node and / or the first device: the sensing result, the measured value of the sensing measurement, and the sensing performance evaluation index.

[0428] Example 2: Determine the first information based on beam measurement.

[0429] In the absence of prior information about environmental reflectors stored on the network side, the second node and the first node can acquire relevant information about the environmental reflectors (i.e., second information) through channel measurement, and further acquire relevant information about the target path (i.e., first information). These two processes can be completed in a single measurement, or the relevant information about the environmental reflectors can be acquired first through a single channel measurement, and then, in subsequent sensing services, the relevant information about the target path can be acquired through sensing measurement based on the acquired information about the environmental reflectors. For ease of distinction, the channel measurement that can acquire prior information about the environmental reflectors is referred to as the second measurement, and the corresponding sensing / reference signal is referred to as the second signal.

[0430] The perception method provided in this example includes the following steps:

[0431] Step b1: The second node and / or the first device determine the second configuration information and send the fourth configuration information to the first node. The second configuration information is used to perform the second measurement. The second configuration information can be referred to the relevant description in the foregoing embodiments, and will not be repeated here.

[0432] Step b2: The second node and the first node perform a second measurement based on the second configuration information. The first node obtains the second measurement result, which includes at least one of the second sensing measurement value and the second sensing performance evaluation index. The second measurement result can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0433] The first node can determine the second information based on the second measurement result. The second information can be found in the relevant description of the foregoing embodiments, which will not be repeated here.

[0434] Optionally, the first node may also determine the first information based on the second information and the second measurement result. The first information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0435] The following explanations will be provided for different scenarios:

[0436] Scenario 1: The first node determines the second information and the first information based on the second measurement. In this case, steps b41 to b61 are executed:

[0437] Step b41: The first node feeds back the first information to the second node and / or the first device.

[0438] Optionally, the first node may also feed back at least one of the second information and the second measurement result to the second node and / or the first device.

[0439] Optionally, the first node determines fourth configuration information, which is parameter configuration information used for sensing services. The fourth configuration information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0440] For example, the first node can determine the fourth configuration information based on the first information, or it can determine the fourth configuration information based on the first information and the second information.

[0441] Step b51: The second node and / or the first device determine third configuration information, which is parameter configuration information used for sensing services. The second node and / or the first device send the third configuration information to the first node. The third configuration information can be found in the relevant descriptions of the foregoing embodiments, and will not be repeated here.

[0442] It should be noted that step b51 above can be an optional step. For example, if the first node determines the fourth configuration information, step b51 may not be executed. It should also be noted that step b51 may be executed if the first node determines the fourth configuration information.

[0443] Step b61: The second node and the first node perform perception services based on the third configuration information and / or the fourth configuration information. The first node obtains at least one of the perception results, perception measurements, and perception performance evaluation indicators.

[0444] Optionally, the first node may send at least one of the sensing results, sensing measurements, and sensing performance evaluation indicators to the second node and / or the first device.

[0445] Scenario 2: The first node determines only the second information based on the second measurement. In this case, proceed with steps b42 to b62.

[0446] Step b42: The first node feeds back the second information to the second node and / or the first device.

[0447] Optionally, the first node feeds back the second measurement result to the second node and / or the first device.

[0448] Optionally, the first node can determine the fifth configuration information based on the second information. The fifth configuration information is parameter configuration information for obtaining the first information, or parameter configuration information for obtaining the first information and the perception result. The relevant content of the fifth configuration information can be found in the relevant description of the first configuration information in the foregoing embodiments, and will not be repeated here.

[0449] Step b52: The second node and / or the first device determine the sixth configuration information and send it to the first node. The sixth configuration information is parameter configuration information for obtaining the first information, or parameter configuration information for obtaining the first information and the perception result. The relevant content of the sixth configuration information can be found in the relevant description of the first configuration information in the foregoing embodiments, and will not be repeated here.

[0450] Step b62: The second node and the first node perform perception services based on the fifth configuration information and / or the sixth configuration information, obtain at least one of the perception measurement quantity and perception performance evaluation index, and obtain first information based on the perception measurement quantity and perception performance evaluation index, and then obtain perception results based on the first information. The content of the first information can be referred to the relevant description in the foregoing embodiments, and will not be repeated here.

[0451] Optionally, the first node sends at least one of the following to the second node and / or the first device: first information, perception result, perception measurement, and perception performance evaluation index.

[0452] In some optional embodiments, the first node may perform a first measurement based on the fifth configuration information and / or the sixth configuration information to obtain first information, and may send the first information to the second node and / or the first device.

[0453] Optionally, the second node and / or the first device may determine seventh configuration information, which is parameter configuration information for sensing, and send it to the first node. The seventh configuration information can be found in the aforementioned third configuration information and will not be repeated here. The first node can then perform sensing services based on the seventh configuration information.

[0454] For example, the second node and / or the first device may determine the seventh configuration information based on the first information, or the seventh configuration information may be determined based on the first information and the second information.

[0455] It should be noted that the sensing method provided in this application can be executed by a sensing device. This application uses the example of a sensing device executing the sensing method to illustrate the sensing device provided in this application.

[0456] This application provides a sensing device. As an example, the sensing device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0457] The sensing device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0458] Specifically, referring to Figure 6, the sensing device 600 includes a processing module 601, which is used to acquire first configuration information, and the first configuration information is used to perform a first measurement;

[0459] The processing module 601 is further configured to perform a first measurement and obtain first information, wherein the first information is related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0460] The processing module 601 is further configured to obtain the perception result based on the first information.

[0461] Optionally, the multipath passing through the perceived target includes at least one of the following:

[0462] The first target path is used to represent the multiple paths from the second node to the first node via the sensing target;

[0463] The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node;

[0464] The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node;

[0465] The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

[0466] Optionally, the first information includes at least one of the following:

[0467] The type of target path detected or identified;

[0468] Information on at least one type of target path.

[0469] Optionally, the information of the at least one type of target path includes at least one of the following:

[0470] The number of at least one type of target path;

[0471] The index of at least one type of target path;

[0472] The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services;

[0473] The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths;

[0474] The complex amplitude of at least one type of target path;

[0475] The power of at least one type of target path;

[0476] The time delay of at least one type of target path;

[0477] The angle of at least one type of target path;

[0478] The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

[0479] Optionally, the target indicator includes at least one of the following:

[0480] Receive power related metrics;

[0481] Indicators related to interference and noise power;

[0482] The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal reception quality (RSRQ).

[0483] Optionally, the first node obtains the first configuration information, including:

[0484] The first node receives first configuration information from at least one of the second node and the first device;

[0485] or,

[0486] The first node determines the first configuration information based on the second information, which is information related to the reflector.

[0487] Optionally, the processing module is further configured to acquire second information, which is information related to the reflector;

[0488] The processing module is specifically used for:

[0489] Perform a first measurement and obtain a first measurement result, wherein the first measurement result includes at least one of a first perception measurement value and a first perception performance evaluation index;

[0490] The first information is determined based on the first measurement result and the second information.

[0491] Optionally, the processing module is specifically used for:

[0492] Receive the second information from at least one of the second node and the first device;

[0493] or,

[0494] The second information is determined based on the first measurement result.

[0495] Optionally, the processing module is specifically used for:

[0496] Obtain second configuration information, which is used for the second measurement;

[0497] A second measurement is performed based on the second configuration information to obtain a second measurement result, wherein the second measurement result includes at least one of the second perception measurement value and the second perception performance evaluation index.

[0498] The second information is determined based on the second measurement result.

[0499] Optionally, the device further includes:

[0500] A sending module is used to send the second information to at least one of the second node and the first device.

[0501] Optionally, the second information includes at least one of the following:

[0502] The position coordinates of the reflector;

[0503] The reflection coefficient of the reflector;

[0504] Electromagnetic parameter information of the reflector;

[0505] Material information of the reflector;

[0506] Dimensions of the reflector;

[0507] The state information of the reflector.

[0508] Optionally, the processing module is specifically used for:

[0509] Send the first information to at least one of the second node and the first device;

[0510] Receive third configuration information from at least one of the second node and the first device, the third configuration information being configuration information for sensing services;

[0511] The perception service is executed according to the third configuration information to obtain the perception result.

[0512] Optionally, the processing module is specifically used for:

[0513] Based on the first information and the first measurement result, the perception result is obtained.

[0514] The sensing device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG2 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0515] It should be noted that the configuration method provided in this application embodiment can be executed by a configuration device. This application embodiment uses the execution of the configuration method by a configuration device as an example to illustrate the configuration device provided in this application embodiment.

[0516] This application provides a configuration device. As an example, the configuration device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0517] The configuration device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0518] Referring to Figure 7, the configuration device 700 includes a processing module 701 for performing a first operation;

[0519] The first operation includes at least one of the following:

[0520] Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information.

[0521] The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information.

[0522] Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

[0523] Optionally, the multipath passing through the perceived target includes at least one of the following:

[0524] The first target path is used to represent the multiple paths from the second node to the first node via the sensing target;

[0525] The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node;

[0526] The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node;

[0527] The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

[0528] Optionally, the first information includes at least one of the following:

[0529] The type of target path detected or identified;

[0530] Information on at least one type of target path.

[0531] Optionally, the information of the at least one type of target path includes at least one of the following:

[0532] The number of at least one type of target path;

[0533] The index of at least one type of target path;

[0534] The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services;

[0535] The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths;

[0536] The complex amplitude of at least one type of target path;

[0537] The power of at least one type of target path;

[0538] The time delay of at least one type of target path;

[0539] The angle of at least one type of target path;

[0540] The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

[0541] Optionally, the target indicator includes at least one of the following:

[0542] Receive power related metrics;

[0543] Indicators related to interference and noise power;

[0544] The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal reception quality (RSRQ).

[0545] Optionally, the third configuration information is determined based on the first information and the second information, wherein the second information is information related to the reflector.

[0546] Optionally, the device further includes:

[0547] The sending module is used to send the second information to the first node;

[0548] or,

[0549] The receiving module is used to receive second information from the first node;

[0550] The second information is information related to the reflector.

[0551] Optionally, the second information includes at least one of the following:

[0552] The position coordinates of the reflector;

[0553] The reflection coefficient of the reflector;

[0554] Electromagnetic parameter information of the reflector;

[0555] Material information of the reflector;

[0556] Dimensions of the reflector;

[0557] The state information of the reflector.

[0558] The configuration device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG5 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0559] As shown in Figure 8, this application embodiment also provides a communication device 800, including a processor 801 and a memory 802. The memory 802 stores programs or instructions that can run on the processor 801. For example, when the communication device 800 is a first node, the program or instructions executed by the processor 801 implement the various steps of the above-described sensing method embodiment and achieve the same technical effect. When the communication device 800 is a second device, the program or instructions executed by the processor 801 implement the various steps of the above-described configuration method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0560] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiments shown in FIG2 or FIG5. This terminal embodiment corresponds to the above-described terminal-side method embodiments, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal can be the sensing device shown in FIG6, or it can be the configuration device shown in FIG7. Specifically, FIG9 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0561] The terminal 900 includes, but is not limited to, at least some of the following components: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0562] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 910 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 9 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0563] It should be understood that, in this embodiment, the input unit 904 may include a graphics processor 9041 and a microphone 9042. The graphics processor 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0564] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0565] The memory 909 can be used to store software programs or instructions, as well as various data. The memory 909 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0566] Processor 910 may include one or more processing units; optionally, processor 910 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0567] The processor 910 is configured to acquire first configuration information, which is used to perform a first measurement; perform the first measurement to obtain first information, which is related information about the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment; and acquire a sensing result based on the first information.

[0568] or,

[0569] Processor 910 is configured to perform a first operation; the first operation includes at least one of the following: sending first configuration information to a first node, the first configuration information being used to perform a first measurement, the first measurement being used to acquire first information; receiving the first information from the first node and sending third configuration information to the first node, the third configuration information being configuration information for sensing services, the third configuration information being determined based on the first information; wherein, the first information is related to a target path, the target path including at least one of the following: a multipath passing through a sensing target, a multipath passing through a first reflector, and a direct path between the first node and a second node; the first reflector is a static reflector in the environment.

[0570] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant descriptions of the foregoing perception method embodiment or the foregoing configuration method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0571] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG2 or the steps of the method embodiment shown in FIG5. This network-side device embodiment corresponds to the above-described first node-side method embodiment or the above-described second device-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0572] Specifically, this application embodiment also provides a network-side device, which can be the sensing device shown in FIG. 6 or the sensing device shown in FIG. 7. As shown in FIG. 10, the network-side device 1000 includes: an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004, and a memory 1005. The antenna 1001 is connected to the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be transmitted and sends it to the radio frequency device 1002, which processes the received information and then transmits it through the antenna 1001.

[0573] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1003, which includes a baseband processor.

[0574] The baseband device 1003 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG10. One of the chips is, for example, a baseband processor, which is connected to the memory 1005 via a bus interface to call the program in the memory 1005 and execute the network device operation shown in the above method embodiment.

[0575] The network-side device may also include a network interface 1006, such as a Common Public Radio Interface (CPRI).

[0576] Specifically, the network-side device 1000 in this application embodiment further includes: instructions or programs stored in memory 1005 and executable on processor 1004. Processor 1004 calls the instructions or programs in memory 1005 to execute the methods executed by the modules shown in FIG6 or FIG7 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0577] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described perception method embodiments or the various processes of the above-described configuration method embodiments, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0578] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0579] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described sensing method embodiments or the various processes of the above-described configuration method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0580] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0581] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described sensing method embodiments or the various processes of the above-described configuration method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0582] This application also provides a wireless communication system, including a first node and a second device, wherein the first node can be used to perform the steps of the sensing method described above, and the second device can be used to perform the steps of the configuration method described above.

[0583] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0584] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0585] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A sensing method, comprising: The first node obtains first configuration information, which is used to perform the first measurement. The first node performs a first measurement to obtain first information, which is related to the target path. The target path includes at least one of the following: a multipath passing through the sensed target, a multipath passing through a first reflector, and a direct path between the first node and the second node; wherein the first reflector is a static reflector in the environment. The first node obtains the perception result based on the first information.

2. The method according to claim 1, wherein, The multipath passing through the perceived target includes at least one of the following: The first target path is used to represent the multiple paths from the second node to the first node via the sensing target; The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node; The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node; The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

3. The method according to claim 1 or 2, wherein, The first information includes at least one of the following: The type of target path detected or identified; Information on at least one type of target path.

4. The method according to claim 3, wherein, The information of at least one type of target path includes at least one of the following: The number of at least one type of target path; The index of at least one type of target path; The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services; The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths; The complex amplitude of at least one type of target path; The power of at least one type of target path; The time delay of at least one type of target path; The angle of at least one type of target path; The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

5. The method according to claim 4, wherein, The target indicator includes at least one of the following: Receive power related metrics; Indicators related to interference and noise power; The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal reception quality (RSRQ).

6. The method according to any one of claims 1 to 5, wherein, The first node obtains the first configuration information, including: The first node receives first configuration information from at least one of the second node and the first device; or, The first node determines the first configuration information based on the second information, which is information related to the reflector.

7. The method according to any one of claims 1 to 6, wherein, The method further includes: The first node acquires second information, which is information related to the reflector; The first node performs a first measurement to obtain first information, including: The first node performs a first measurement and obtains a first measurement result, which includes at least one of a first perception measurement value and a first perception performance evaluation index. The first node determines the first information based on the first measurement result and the second information.

8. The method according to claim 7, wherein, The first node obtains the second information, including: The first node receives the second information from at least one of the second node and the first device; or, The first node determines the second information based on the first measurement result.

9. The method according to claim 7, wherein, The first node obtains the second information, including: The first node acquires second configuration information, which is used for the second measurement. The first node performs a second measurement based on the second configuration information to obtain a second measurement result, the second measurement result including at least one of the second perception measurement value and the second perception performance evaluation index; The first node determines the second information based on the second measurement result.

10. The method according to claim 8 or 9, wherein, The method further includes: The first node sends the second information to at least one of the second node and the first device.

11. The method according to any one of claims 6 to 10, wherein, The second information includes at least one of the following: The position coordinates of the reflector; The reflection coefficient of the reflector; Electromagnetic parameter information of the reflector; Material information of the reflector; Dimensions of the reflector; The state information of the reflector.

12. The method according to any one of claims 1 to 11, wherein, The first node obtains the perception result based on the first information, including: The first node sends the first information to at least one of the second node and the first device; The first node receives third configuration information from at least one of the second node and the first device, the third configuration information being configuration information for sensing services; The first node performs perception services based on the third configuration information and obtains perception results.

13. The method according to any one of claims 1 to 11, wherein, The first node obtains the perception result based on the first information, including: The first node obtains the perception result based on the first information and the first measurement result.

14. A configuration method, comprising: The second device performs the first operation, and the second device includes a second node or the first device; The first operation includes at least one of the following: Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information. The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information. Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

15. The method according to claim 14, wherein, The multipath passing through the perceived target includes at least one of the following: The first target path is used to represent the multiple paths from the second node to the first node via the sensing target; The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node; The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node; The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

16. The method according to claim 14 or 15, wherein, The first information includes at least one of the following: The type of target path detected or identified; Information on at least one type of target path.

17. The method according to claim 16, wherein, The information of at least one type of target path includes at least one of the following: The number of at least one type of target path; The index of at least one type of target path; The first parameter of the at least one type of target path, wherein the first parameter is used to indicate the tendency or priority of using the target path to perform sensing services; The second parameter of the at least one type of target path, the second parameter is used to indicate the degree of similarity or difference between two target paths, or to indicate the degree of similarity or difference between the channels formed by two target paths; The complex amplitude of at least one type of target path; The power of at least one type of target path; The time delay of at least one type of target path; The angle of at least one type of target path; The measured value of the target index of at least one type of target path, wherein the target index is a perception-related index.

18. The method according to claim 17, wherein, The target indicator includes at least one of the following: Receive power related metrics; Indicators related to interference and noise power; The sensing channel quality-related metrics include at least one of the following: signal-to-interference-plus-noise ratio (SINR), signal-to-noise ratio (SNR), signal-to-interference ratio (SIR), and reference signal reception quality (RSRQ).

19. The method according to any one of claims 14 to 18, wherein, The third configuration information is determined based on the first information and the second information, where the second information is information related to the reflector.

20. The method according to any one of claims 14 to 19, wherein, The method further includes: The second device sends the second information to the first node; or, The second device receives the second information from the first node; The second information is information related to the reflector.

21. The method according to claim 19 or 20, wherein, The second information includes at least one of the following: the position coordinates of the reflector; the reflection coefficient of the reflector; the electromagnetic parameters of the reflector; the material information of the reflector; the size information of the reflector; and the state information of the reflector.

22. A sensing device, comprising: The processing module is used to obtain first configuration information, which is used to perform a first measurement. The processing module is further configured to perform a first measurement to obtain first information, wherein the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through a first reflector, and a direct path between a first node and a second node; the first reflector is a static reflector in the environment. The processing module is further configured to obtain the perception result based on the first information.

23. The apparatus according to claim 22, wherein, The multipath passing through the perceived target includes at least one of the following: The first target path is used to represent the multiple paths from the second node to the first node via the sensing target; The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node; The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node; The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

24. The apparatus according to claim 22 or 23, wherein, The processing module is further configured to acquire second information, which is information related to the reflector; The processing module is specifically used for: Perform a first measurement and obtain a first measurement result, wherein the first measurement result includes at least one of a first perception measurement value and a first perception performance evaluation index; The first information is determined based on the first measurement result and the second information.

25. The apparatus according to any one of claims 22 to 24, wherein, The processing module is specifically used for: Send the first information to at least one of the second node and the first device; Receive third configuration information from at least one of the second node and the first device, the third configuration information being configuration information for sensing services; The perception service is executed according to the third configuration information to obtain the perception result.

26. A configuration device, comprising: The processing module is used to perform the first operation; The first operation includes at least one of the following: Send first configuration information to the first node. The first configuration information is used to perform a first measurement. The first measurement is used to obtain first information. The system receives first information from the first node and sends third configuration information to the first node. The third configuration information is configuration information for sensing services and is determined based on the first information. Wherein, the first information is information related to the target path, and the target path includes at least one of the following: a multipath passing through the sensing target, a multipath passing through the first reflector, and a direct path between the first node and the second node; the first reflector is a static reflector in the environment.

27. The apparatus according to claim 26, wherein, The multipath passing through the perceived target includes at least one of the following: The first target path is used to represent the multiple paths from the second node to the first node via the sensing target; The second target path is used to represent the multipath from the second node through the second reflector and the sensing target to the first node; The third target path is used to represent the multipath from the second node through the sensing target and the third reflector to the first node; The fourth target path is used to represent the multipath from the second node through the fourth reflector, the sensing target, and the fifth reflector to the first node.

28. A first node comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the sensing method as claimed in any one of claims 1 to 13.

29. A second device comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the configuration method as claimed in any one of claims 14 to 21.

30. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the sensing method as claimed in any one of claims 1 to 13, or the steps of the configuration method as claimed in any one of claims 14 to 21.

31. A computer program product, said computer program product being executed by at least one processor to implement the steps of the sensing method as claimed in any one of claims 1 to 13, or to implement the steps of the configuration method as claimed in any one of claims 14 to 21.

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