Signal processing method and apparatus, device, and readable storage medium

Abstract

The present application belongs to the technical field of communications, and discloses a signal processing method and apparatus, a device, and a readable storage medium. The method comprises: on the basis of first sequence parameter configuration information, a first node determines a first sequence of an antenna port of the first node, the first sequence parameter configuration information comprising at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle; on the basis of second sequence parameter configuration information, the first node determines a second sequence, the second sequence parameter configuration information comprising at least one of the following: first indication information, and the length of the second sequence; on the basis of the first sequence and the second sequence, the first node determines a third sequence; the first node sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and time-frequency resource configuration information of a first signal; and on the basis of the third sequence, the first node sends the first signal.

Description

Signal processing methods, apparatus, devices and readable storage media

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411792024.5, filed on December 6, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, and specifically relates to a signal processing method, apparatus, device and readable storage medium. Background Technology

[0004] In communication systems, signals from each transmit antenna port are orthogonalized through time-division multiplexing, frequency-division multiplexing, and code-division multiplexing, further enabling multi-port channel measurement. Communication precoding maps the transmitted signals from each port into one or more orthogonal data streams, and the transmitted signals are concentrated at the communication receiver. In radar systems, Multiple-Input Multiple-Output (MIMO) radars achieve virtual array gain and good angular resolution by transmitting orthogonal signals, but have a low sensing signal-to-noise ratio. Phased-array radars, on the other hand, concentrate the transmitted signals towards the sensing target direction through beamforming, achieving a better sensing signal-to-noise ratio, but with poorer angular resolution.

[0005] Improving the accuracy of multi-port sensing and enhancing the sensing signal-to-noise ratio are urgent problems to be solved. Summary of the Invention

[0006] This application provides a signal processing method, apparatus, device, and readable storage medium to address the problems of improving the accuracy of multi-port sensing and improving the sensing signal-to-noise ratio.

[0007] Firstly, a signal processing method is provided, comprising:

[0008] The first node determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0009] The first node determines the second sequence based on the second sequence parameter configuration information, which includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, which includes at least one of the following: m-sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence.

[0010] The first node determines the third sequence based on the first sequence and the second sequence;

[0011] The first node sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0012] The first node sends a first signal based on the third sequence.

[0013] Secondly, a signal processing method is provided, the method comprising:

[0014] The second node determines the third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0015] The second node receives a first signal, which is sent by the first node based on a sequence determined by the first node based on the first sequence parameter configuration information and the second sequence parameter configuration information;

[0016] The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam.

[0017] The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

[0018] Thirdly, a signal processing method is provided, the method comprising:

[0019] The first device determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0020] The first device determines a second sequence based on the second sequence parameter configuration information, the second sequence parameter configuration information including at least one of the following: first indication information, the first indication information being used to indicate the type of the second sequence; the length of the second sequence, the second sequence including at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ zero cross-correlation region sequence;

[0021] The first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node;

[0022] Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

[0023] Fourthly, a signal processing apparatus is provided, comprising: a first transceiver unit and a first processing unit;

[0024] The first processing unit is configured to determine a first sequence of the antenna ports of the first node based on the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0025] The first processing unit is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m-sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence.

[0026] The first processing unit is further configured to determine a third sequence based on the first sequence and the second sequence;

[0027] The first transceiver unit is configured to send at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0028] The first transceiver unit is also used to transmit the first signal in the third sequence.

[0029] Fifthly, a signal processing apparatus is provided, comprising: a second transceiver unit and a second processing unit;

[0030] The second processing unit is configured to determine a third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0031] The second transceiver unit is used to receive a first signal, which is sent by the first node based on a sequence determined by the first node based on the first sequence parameter configuration information and the second sequence parameter configuration information.

[0032] The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam.

[0033] The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

[0034] In a sixth aspect, a signal processing apparatus is provided, comprising: a third transceiver unit and a third processing unit;

[0035] The third processing unit is used to determine the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0036] The third processing unit is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence.

[0037] The third transceiver unit is used to send at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node.

[0038] Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

[0039] In a seventh aspect, a signal processing apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect, or to implement the steps of the method described in the third aspect.

[0040] Eighthly, a terminal is provided, the 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 first or second aspect.

[0041] A ninth aspect provides a network-side 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 first, second, or third aspect.

[0042] 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 the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0043] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first or second aspect, and the network-side device can be used to perform the steps of the method as described in the first, second, or third aspect.

[0044] 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 the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0045] In a thirteenth aspect, a computer program / program product is provided, the computer program or program product being stored in a storage medium, the computer program or program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect.

[0046] In this embodiment, the first node determines a first sequence of antenna ports based on first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first node determines a second sequence based on second sequence parameter configuration information. The second sequence parameter configuration information includes at least one of the following: first indication information; the length of the second sequence. The first node determines a third sequence based on the first sequence and the second sequence. The first node transmits at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal. The first node transmits the first signal based on the third sequence. The first sequence parameter configuration information and the second sequence parameter configuration information are configuration parameters for the first node's transmit array when it is a linear array or a planar array. Through flexible parameter configuration, a beam with a specific direction or angle range can be formed, so that the signal gain within the beam range is constant. This can simultaneously take into account multi-port sensing and beamforming, ensuring angular resolution while improving multi-port sensing accuracy and sensing signal-to-noise ratio. Attached Figure Description

[0047] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this application;

[0048] Figure 2 is a flowchart of a signal processing method provided in an embodiment of this application;

[0049] Figure 3 is a flowchart of another signal processing method provided in an embodiment of this application;

[0050] Figure 4 is a flowchart of another signal processing method provided in an embodiment of this application;

[0051] Figure 5 is a schematic diagram of multipath propagation in a bistatic sensing scenario;

[0052] Figure 6 is a schematic diagram of multipath in the first dimension of the channel response;

[0053] Figures 7a and 7b are schematic diagrams of the sensory region division;

[0054] Figure 8 is a structural diagram of a signal processing device provided in an embodiment of this application;

[0055] Figure 9 is a structural diagram of another signal processing device provided in an embodiment of this application;

[0056] Figure 10 is a structural diagram of another signal processing device provided in an embodiment of this application;

[0057] Figure 11 is a structural diagram of a communication device provided in an embodiment of this application;

[0058] Figure 12 is a structural diagram of a terminal provided in an embodiment of this application;

[0059] Figure 13 is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0060] 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.

[0061] 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.

[0062] 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.

[0063] It is worth noting that the technology described in this application is 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, such as NTN systems, vehicle-to-everything (V2X), vehicle-to-everything (V2X), machine-type communications (MTC), the Internet of Things (IoT), machine-to-machine (M2M), or future mobile communication systems. As a possible application scenario, NTN systems may include satellite systems. Based on their altitude, i.e., their orbital altitude, satellites can be classified into highly elliptical orbit (HEO) satellites, geosynchronous earth orbit (GEO) satellites, medium earth orbit (MEO) satellites, and low earth orbit (LEO) satellites. Furthermore, NTN systems may also include non-terrestrial network-side equipment (or airborne network-side equipment) such as High Altitude Platform Station (HAPS) communication systems. The non-terrestrial network-side equipment involved in this application is not limited to the examples mentioned above.

[0064] The terms "system" and "network" used in the embodiments of this application are often used interchangeably, and the described technologies can be used with respect to the systems and radio technologies mentioned above, as well as other systems and radio technologies. The following description describes a New Radio (NR) system 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) systems. th Generation 6G communication system.

[0065] I. On the integration of communication and sensing or the integration of communication and sensing

[0066] 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 or 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.

[0067] Integrated Sensing and Communication (ISAC) has the potential to integrate wireless sensing into mobile networks, referred to here as Perceptive Mobile Networks (PMNs). Perceptive Mobile Networks can simultaneously provide communication and wireless sensing services, and due to their wide broadband coverage and robust infrastructure, they promise to become a ubiquitous wireless sensing solution. Perceptive Mobile Networks can be widely applied to communication and sensing in transportation, communication, energy, precision agriculture, and security sectors. They can also provide complementary sensing capabilities to sensor networks, possess unique day / night operation capabilities, and can penetrate fog, foliage, and even solid objects. Some common sensing services are shown in Table 1 below.

[0068] Table 1 Common Sensing Service Classifications

[0069] II. Introduction to the First Signal, First Node, Second Node, and First Device

[0070] In mobile communication networks, base stations and terminals (e.g., user equipment (UE)) can serve as sensing nodes participating in sensing or integrated sensing services. Base stations may include one or more transmission reception points (TRPs), and UEs may include one or more subarrays or panels. UEs may be mobile terminals, portable tablets, etc.

[0071] In this application, sensing of a certain area or a certain entity target can be achieved by transmitting and receiving a first signal between nodes. The first signal can be a signal that does not contain transmitted information, such as LTE or NR synchronization and reference signals. The first signal includes at least one of the following: synchronization signal and PBCH block (SSB), channel state information-reference signal (CSI-RS), demodulation reference signal (DMRS), sounding reference signal (SRS), positioning reference signal (PRS), phase tracking reference signal (PTRS), etc.; or, the first signal can also be a single-frequency continuous wave (CW), frequency-modulated continuous wave (FMCW), or ultra-wideband Gaussian pulse commonly used by radar; or, the first signal can also be a newly designed dedicated signal with good correlation characteristics and 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 first signal is formed by splicing, combining or superimposing at least one dedicated sensing signal or reference signal and at least one communication signal in the time domain or frequency domain.

[0072] In this application, the node that transmits or receives the first signal is called a sensing node. A sensing node may include a base station or a UE. The sensing node that transmits the first signal is called a first node, which may also be called a transmitting node, a transmitting end, or a sensing signal transmitting end. The sensing node that receives the first signal is called a second node, which may also be called a receiving node, a receiving end, or a sensing signal receiving end.

[0073] The first device in this application includes core network equipment. Optionally, the core network equipment includes, but is not limited to, at least one of the following: Access and Mobility Management Function (AMF), Sensing Function (SF), communication application server in the core network, sensing application server, etc.

[0074] II. Beamforming Design Based on Correlation Matrix

[0075] Assume the transmitter has M transmit antenna ports, and the signal at the i-th transmit antenna port is... Where i = 1, 2, ..., M, M is a positive integer, 0 ≤ t ≤ T, f c Let p(t) be the carrier frequency, p(t) be a rectangular pulse with a pulse width of T, and T be the symbol sequence of the signal transmitted at the i-th transmit antenna port. This can be arranged in a matrix S of dimension M×N, where the i-th row corresponds to the signal sequence of the i-th transmit antenna port, and the length is N. The zero-lag correlation matrix is ​​defined as follows: Then the spatial beam power spectrum is P(θ)=a T (θ)R0a * (θ), where a(θ) is the steering vector of the transmitter array. The zero-delay correlation matrix R0 satisfies the following form:

[0076] Where 0 ≤ ρ ≤ 1, when ρ = 1, the signals are perfectly correlated, and R0 = 11. T R0 is an all-1 matrix, where 1 is an N×1 all-1 vector; when ρ = 0, the signals are mutually orthogonal, and R0 = I is the identity matrix; when ρ is between 0 and 1, the signals are partially correlated.

[0077] Assuming that the beam direction corresponding to R0 is directly facing the panel, then the pointing angle is... The spatial correlation matrix corresponding to the beam direction is Therefore, by designing the correlation matrix R0 of the multi-port signal and changing the value of ρ, the width and direction of the transmitted signal beam at the transmitter can be changed, thus achieving a trade-off between MIMO sensing and beamforming.

[0078] 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.

[0079] 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 earphones, 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 the embodiments of this application.

[0080] Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, radio access network unit, or satellite. 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.

[0081] 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.

[0082] 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).

[0083] Referring to Figure 2, an embodiment of this application provides a signal processing method, the specific steps of which include:

[0084] Step 21: The first node determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0085] The first sequence parameter configuration information is used by at least one of the first node, the second node, and the first device to determine the first sequence associated with the first signal (i.e., the multi-port sensing signal).

[0086] In this embodiment, the first node may be a sensing node that sends the first signal. Optionally, the first node may include, but is not limited to, at least one of the following: a base station or a terminal.

[0087] Optionally, the first coefficient can also be called the beamwidth scaling factor, which changes the width of the transmitting array beam. The second coefficient can also be called the beam direction adjustment factor, which changes the direction of the transmitting array beam.

[0088] Assuming the zero-delay correlation matrix R0 corresponds to a beam direction directly facing the panel, then the beam points to the first angle. The spatial correlation matrix corresponding to the beam direction is Optionally, the first node can be based on the formula: Determine the final zero-delay correlation matrix used for beamforming

[0089] Step 22: The first node determines the second sequence according to the second sequence parameter configuration information. The second sequence parameter configuration information includes at least one of the following: first indication information, which is used to indicate the type of the second sequence; the length of the second sequence, which includes at least one of the following: maximum length linear feedback shift register sequence (m sequence), Zadoff-Chu (ZC) sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and zero cross-correlation zone (ZCZ) sequence;

[0090] The second sequence parameter configuration information is used by at least one of the first node, the second node, and the first device to determine the second sequence associated with the first signal (i.e., the multi-port sensing signal).

[0091] Optionally, the first indication information may include, but is not limited to, at least one of the following: second sequence type index, second sequence type identifier, and data format of the second sequence.

[0092] Optionally, the Hadamard encoded sequence includes at least one of the following: a sequence of row vectors of the Hadamard matrix, or a sequence of column vectors of the Hadamard matrix.

[0093] It is understood that the order of steps 21 and 22 is not limited in this application. That is, steps 21 can be executed first and then steps 22, or steps 22 can be executed first and then steps 21, or steps 21 and 22 can be executed simultaneously.

[0094] Step 23: The first node determines a third sequence based on the first sequence and the second sequence, wherein the third sequence is the sequence used by the first signal;

[0095] Optionally, the first node performs a first operation based on the first sequence and the second sequence to determine the third sequence. The first operation is described as follows:

[0096] First sequence s i [n], i = 1, 2, ..., M, n = 0, 1, ..., N-1 can be stored in a matrix S of dimension M × N, i.e.

[0097] Where C represents the set of complex numbers.

[0098] Furthermore, assuming the second sequence is d[n], n = 0, 1, ..., N-1, then the third sequence can be represented as: s′ i [n] = si [n]d[n],i=1,2,…,M,n=0,1,…,N-1,

[0099] This can be represented in matrix form as follows:

[0100] Where D is a diagonal matrix of dimension N×N, with diagonal elements d[n], n=0,1,…,N-1, and other off-diagonal elements are 0;

[0101] Step 24: The first node sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0102] Optionally, the time-frequency resource configuration information includes at least one of the following: starting frequency, starting time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

[0103] Optionally, the bandwidth of the first signal includes the number of consecutive physical resource blocks (PRBs) occupied by the first signal.

[0104] Optionally, the frequency domain density of the first signal includes at least one of the following: the number of resource elements (REs) required for the first signal in each PRB in the frequency domain, the frequency domain spacing of the REs occupied by the first signal in each PRB, and the frequency domain offset.

[0105] Optionally, the duration of the first signal includes the number of consecutive time slots or symbols occupied by the first signal.

[0106] Optionally, the first signal time-domain density includes at least one of the following: the number of symbols required for the sensing signal in each time slot in the time domain, the symbol interval and symbol offset of the symbols occupied by the sensing signal in each time slot.

[0107] Optionally, the first node sending at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal includes: the first node sending at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the second node and the first device.

[0108] The second node may be a sensing node that receives the first signal. Optionally, the second node may include, but is not limited to, at least one of the following: a base station or a terminal.

[0109] The first device (or first function) includes core network equipment, such as AMF, Sensing Function (SF), communication application server or sensing application server, etc.

[0110] It is understood that the order of step 24 with steps 21 to 23 is not limited in this application. For example, steps 21 to 23 can be executed first in the manner described above, and then step 24 can be executed, or step 24 can be executed first, and then steps 21 to 23 can be executed in the manner described above, or step 24 and at least one of steps 21 to 23 can be executed simultaneously.

[0111] Step 25: The first node sends a first signal based on the third sequence.

[0112] It is understood that the order of steps 25 and 24 is not limited in this application. For example, step 24 can be executed first and then step 25, or step 25 can be executed first and then step 24, or steps 24 and 25 can be executed simultaneously.

[0113] In one embodiment of this application, the expression for the first sequence is:

[0114] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0115] Optionally, when α1 = 1, the zero-delay correlation matrix R0 calculated using the first sequence above is N multiplied by an identity matrix, corresponding to the orthogonality of the signals at each transmit antenna port; when α1 = 0, R0 is N multiplied by all 1s, corresponding to the correlation of the signals at all transmit antenna ports; when 0 < α1 < 1, the beam is a constant gain beam within a certain angle range, and the beamwidth is proportional to α1.

[0116] Optionally, if α2 = α1 and no beam rotation is performed, the beam direction formed based on the first signal of the first sequence is facing the broadside direction.

[0117] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence.

[0118] In one embodiment of this application, when the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0119] In one embodiment of this application, when the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: the root number of the ZC sequence and the cyclic shift value of the ZC sequence.

[0120] In one embodiment of this application, when the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index.

[0121] In one embodiment of this application, when the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0122] In one embodiment of this application, when the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0123] 1) Second indication information, the second indication information being used to indicate the method for generating the ZCZ sequence;

[0124] Optionally, the generation method includes, but is not limited to, at least one of the following: base sequence-based generation method, table lookup generation method, wherein the base sequence includes, but is not limited to, at least one of the following: m sequence, ZC sequence.

[0125] 2) Third indication information, the third indication information being used to indicate the ZCZ sequence phase coding modulation order or ZCZ sequence phase coding modulation base;

[0126] Optionally, the third indication information indicates the ZCZ sequence m-phase shift keying (PSK) type; equivalently, the third indication information indicates the value of m. Common values ​​for m include 2 and 4, indicating binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK), respectively. Additionally, m can also be any other integer greater than 1.

[0127] 3) Fourth indication information, which indicates the maximum number of available ZCZ sequences (M) in the ZCZ sequence set. ZCZ );

[0128] Optionally, the fourth indication information indicates the maximum number of available sequences in the ZCZ sequence set used for sensing. For MIMO sensing, this satisfies M ≤ M0. ZCZ .

[0129] 4) Fifth indication information, which is used to indicate the length (Z) of the zero cross-correlation region of the ZCZ sequence;

[0130] Optionally, the length (Z) of the zero cross-correlation region of the ZCZ sequence can be directly configured, or it can be combined with the length (N) of the second sequence and the number (M) of the ZCZ sequences in the ZCZ sequence set. ZCZ It is associated with at least one of the following: perception requirements, prior perception information, historical perception measurement values, historical perception results, and historical perception performance evaluation indicators.

[0131] 5) Parameters used to generate the base sequence of the ZCZ sequence.

[0132] The base sequence used to generate the ZCZ sequence refers to the initial sequence used to generate the ZCZ sequence during the generation process. For example, the ZCZ sequence can be generated based on an m-sequence. In this case, the m-sequence needs to be generated first, and then the ZCZ sequence is further generated based on the m-sequence through operations or transformations. Optionally, the base sequence can be an m-sequence, a ZC sequence, a Walsh-coded sequence, or a Hadamard-coded sequence. For example, if the ZCZ sequence is generated based on an m-sequence (i.e., the base sequence of the ZCZ sequence is an m-sequence), the second sequence parameter configuration information also includes the initial value (c) of the shift register for the m-sequence used to generate the ZCZ sequence. init The parameters include at least one of the following: primitive polynomial, truncation position, etc. For example, if the ZCZ sequence is generated based on the ZC sequence (i.e., the base sequence of the ZCZ sequence is the ZC sequence), then the second sequence parameter configuration information also includes the root index of the ZC sequence and the cyclic shift value of the ZC sequence used to generate the ZCZ sequence.

[0133] In one embodiment of this application, prior to step 21 or step 22, the method further includes:

[0134] The first node determines at least one of the following: the configuration information of the first sequence parameter, at least one of the configuration information of the second sequence parameter, and at least one of the time-frequency resource configuration information of the first signal.

[0135] In one embodiment of this application, the first node determines at least one of the following: first sequence parameter configuration information, at least one second sequence parameter configuration information, and time-frequency resource configuration information of the first signal, including:

[0136] The first node determines at least one of the following based on at least one of the first information and the second information: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

[0137] The first information includes at least one of the following:

[0138] 1) Historical measurement values ​​of the sensed quantity or sensed result;

[0139] Optionally, the sensing measurement or sensing result includes at least one of the following: the departure azimuth angle of the sensing target, the departure pitch angle of the sensing target, the departure azimuth angle of at least one target path, and the departure pitch angle of at least one target path.

[0140] 2) Historical measurements of perceived performance evaluation indicators;

[0141] 3) Perceiving prior information;

[0142] Optionally, the perceived prior information includes at least one of the following:

[0143] a) The location coordinates, or range of location coordinates, of at least one perceived target;

[0144] b) The angular range of at least one perceived target;

[0145] Optionally, the angle range includes at least one of the departure azimuth angle and departure pitch angle;

[0146] c) The angular range of at least one target path;

[0147] d) Perceive the number of targets;

[0148] e) Number of target paths;

[0149] f) The position coordinates of at least one second node, or the angle and distance of at least one second node relative to at least one first node;

[0150] g) Prior information about the channel state;

[0151] Optionally, the prior information of the channel state includes at least one of the following: the line-of-sight (LOS) or non-line-of-sight (NLOS) state from at least one first node or at least one second node to at least one sensing target, the LOS or NLOS state between at least one node and at least one second node, the coherence time of the channel formed by at least one target path, the coherence time of the channel between at least one first node and at least one second node, the angular spread of the channel formed by at least one target path, and other information related to the channel state.

[0152] h) Prior environmental information;

[0153] Optionally, prior environmental information includes: the position coordinates, angle information, or distance information of at least one major environmental reflector in the perceived environment.

[0154] Optionally, the angle information includes at least one of the following: the departure azimuth or departure pitch angle of the environmental reflector relative to at least one first node, the arrival azimuth or arrival pitch angle of the environmental reflector relative to at least one second node, and the angular relationship of the environmental reflector relative to at least one sensing target. The angular relationship can be understood as, in a pre-defined coordinate system, at least one of the azimuth and pitch angles of the environmental reflector relative to the at least one sensing target.

[0155] Optionally, the distance information includes the distance between the environmental reflector and at least one of the first node, the second node, and the sensing target.

[0156] 4) Perceive demand information;

[0157] Optionally, the sensing requirement information includes at least one of the following: sensing service type, sensing service priority, sensing detection probability, sensing false detection probability, sensing recognition accuracy requirement, sensing resolution requirement, sensing precision requirement, sensing error requirement, sensing delay budget, maximum sensing range requirement, continuous sensing capability requirement, and sensing update frequency requirement.

[0158] The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

[0159] Optionally, the antenna port information includes at least one of the following: antenna port topology, and the association between the antenna port and physical antenna elements or physical subarrays.

[0160] Optionally, the antenna port topology includes at least one of the following: the topology information in physical space of the preset reference point of the physical subarray or the physical antenna element to which the antenna port is connected.

[0161] Optionally, the physical antenna array information includes at least one of the following:

[0162] 1) The relationship between physical antenna elements or physical subarrays and antenna ports;

[0163] 2) Number of physical subarrays;

[0164] Optionally, the number of physical subarrays includes at least one of the number of physical subarrays in the horizontal direction and the number of physical subarrays in the vertical direction.

[0165] 3) Number of physical antenna array elements within the physical subarray

[0166] Optionally, the number of physical antenna elements includes at least one of the number of physical antenna elements in the horizontal direction and the number of physical antenna elements in the vertical direction.

[0167] 4) Spacing between preset reference points of the physical subarray;

[0168] Optionally, the spacing includes at least one of the horizontal element spacing and the vertical element spacing.

[0169] 5) Spacing between physical antenna elements within the physical subarray;

[0170] 6) Physical subarray configuration information;

[0171] Optionally, the physical subarray configuration information is used to indicate that the physical subarray is at least one of the following: linear array, rectangular array, circular array, cylindrical array, etc.

[0172] 7) Orientation information of the physical antenna array (panel);

[0173] Optionally, the orientation information of the physical antenna array (panel) includes at least one of the following: the angle between the normal direction of the physical antenna array panel and any coordinate axis of the coordinate system in the preset coordinate system, and the angle between the parallel line direction of the physical antenna array panel and any coordinate axis of the coordinate system in the preset coordinate system.

[0174] 8) Physical antenna array aperture;

[0175] Optionally, the physical antenna array aperture includes at least one of the physical subarray aperture and the entire physical antenna array aperture.

[0176] 9) Physical antenna polarization characteristics;

[0177] 10) Physical antenna array element gain;

[0178] Optionally, the physical antenna element gain includes antenna gain in different directions, i.e., 2D or 3D antenna pattern.

[0179] It is understood that, prior to step 21 or step 22, the first node determines at least one of the following: first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and time-frequency resource configuration information of the first signal, based on at least one of the first information and the second information.

[0180] In one embodiment of this application, before the first node determines at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal based on at least one of the first information and the second information, the method further includes:

[0181] The first node acquires at least one of the first information and the second information.

[0182] Optionally, the first node acquiring at least one of the first information and the second information includes: the first node determining the second information, and the first node receiving the first information sent by at least one of the first device and the second node.

[0183] In one embodiment of this application, before or after the first node determines at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal based on at least one of the first information and the second information, the method further includes:

[0184] The first node sends at least one of the first information and the second information to at least one of the second node and the first device.

[0185] Optionally, the first device includes core network equipment, such as including but not limited to at least one of the following: AMF, SF, communication application server, sensing application server, etc.

[0186] In one embodiment of this application, prior to step 21 or step 22, the method further includes:

[0187] The first node receives at least one of the following: first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

[0188] Optionally, the first node receives at least one of the following from at least one of the second node and the first device: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

[0189] In one embodiment of this application, the number of the first sequence parameter configuration information is L1 (L1≥1, (representing a set of integers), where, if the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different.

[0190] In one embodiment of this application, the number of the first sequence parameter configuration information is: When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different.

[0191] In one embodiment of this application, a first sequence parameter configuration information is associated with at least one second sequence parameter configuration information.

[0192] In one embodiment of this application, a second sequence parameter configuration information is associated with at least one first sequence parameter configuration information.

[0193] In one embodiment of this application, the time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to... At least one of the K time-frequency resources or time-frequency resource sets (or resource or resource set indexes) is associated with at least one of the following:

[0194] 1) At least one of the first sequence parameter configuration information;

[0195] 2) At least one of the second sequence parameter configuration information.

[0196] In this application, it is only necessary to ensure that the beam formed by the first signal covers the sensing target and meets the sensing requirements; the value of the first coefficient or the second coefficient does not need to be unique.

[0197] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient.

[0198] In another embodiment of this application, the value of the second coefficient includes one or more discrete values, each discrete value corresponding to an index of the second coefficient. In another embodiment of this application, at least one of the value of the first coefficient, the index of the first coefficient, the value of the second coefficient, and the index of the second coefficient is associated with third information;

[0199] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0200] In one embodiment of this application, before determining the first sequence parameter configuration information or the second sequence parameter configuration information, the method further includes: the first node acquiring third information.

[0201] In one embodiment of this application, the method further includes: the first node determining the second sequence parameter configuration information based on the third information.

[0202] When multiple targets need to be sensed simultaneously, the first signal configured by the first node can be associated with the target or the sensing area. Different targets or sensing areas can be configured with different or the same first signal for sensing. Specifically, the first node forms beams with different directions and widths by configuring different first sequence configuration information. For example, the first signal beams corresponding to different first sequences can be orthogonal (equivalent to different first sequences being orthogonal). In this case, the second sequence used to determine the different first signals can be the same. Alternatively, the first signal beams corresponding to different first sequences do not satisfy the orthogonality relationship (equivalent to different first sequences being correlated) and have partial overlap. In this case, the second sequence used to determine the different first signals can be a sequence with low cross-correlation or orthogonality.

[0203] In this embodiment, the first node determines a first sequence of antenna ports based on first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first node determines a second sequence based on second sequence parameter configuration information. The second sequence parameter configuration information includes at least one of the following: first indication information; the length of the second sequence. The first node determines a third sequence based on the first sequence and the second sequence. The first node sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal. The first node sends a first signal based on the third sequence. The first sequence parameter configuration information and the second sequence parameter configuration information are configuration parameters for the first node's transmit array when it is a linear array or a planar array. Through flexible parameter configuration, a beam with a specific direction or angle range can be formed, so that the signal gain within the beam range is constant. This can simultaneously take into account multi-port sensing and beamforming, ensuring angular resolution while improving the accuracy and reliability of multi-port sensing.

[0204] Referring to Figure 3, an embodiment of this application provides a signal processing method, which includes steps 31 and 32.

[0205] Step 31: The second node determines the third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0206] In this embodiment, the second node may be a sensing node that receives the first signal. Optionally, the second node may include, but is not limited to, at least one of the following: a base station or a terminal.

[0207] Step 32: The second node receives a first signal, which is sent by the first node based on the sequence determined by the first sequence parameter configuration information and the second sequence parameter configuration information;

[0208] In this application, the first node can determine the first sequence based on the first sequence parameter configuration information, the first node can determine the second sequence based on the second sequence parameter configuration information, the first node can determine the third sequence based on the first sequence and the second sequence, and the first node can send the first signal based on the third sequence.

[0209] In this embodiment, the second node receives the first signal, performs sensing, and senses the measured value or sensing result.

[0210] Understandably, the second node can act as a sensing receiver. Based on the third sequence determined in step 31, it performs a first operation on the actually received first signal and the known first signal sent by the first node. The second node can identify the difference between the two, thereby obtaining wireless channel information or sensing target information (e.g., obtaining sensing measurement values ​​or sensing results). The first operation can be time-domain matched filtering or frequency-domain point division.

[0211] The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam.

[0212] The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

[0213] Optionally, the time-frequency resource configuration information includes at least one of the following: starting frequency, starting time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

[0214] In one embodiment of this application, the method further includes: the second node sending a sensing measurement value or sensing result to at least one of the first node and the first device.

[0215] In one embodiment of this application, the expression for the first sequence is:

[0216] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0217] Optionally, when α1 = 1, the zero-delay correlation matrix R0 calculated using the first sequence above is N multiplied by an identity matrix, corresponding to the orthogonality of the signals at each transmit antenna port; when α1 = 0, R0 is N multiplied by all 1s, corresponding to the correlation of the signals at all transmit antenna ports; when 0 < α1 < 1, the beam is a constant gain beam within a certain angle range, and the beamwidth is proportional to α1.

[0218] Optionally, if α2 = α1 and no beam rotation is performed, the beam direction formed based on the first signal of the first sequence is facing the broadside direction.

[0219] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence.

[0220] In one embodiment of this application, when the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0221] In one embodiment of this application, when the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: the root number of the ZC sequence and the cyclic shift value of the ZC sequence.

[0222] In one embodiment of this application, when the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index.

[0223] In one embodiment of this application, when the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0224] In one embodiment of this application, when the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0225] 1) Second indication information, the second indication information being used to indicate the method for generating the ZCZ sequence;

[0226] Optionally, the generation method includes, but is not limited to, at least one of the following: base sequence-based generation method, table lookup generation method, wherein the base sequence includes, but is not limited to, at least one of the following: m sequence, ZC sequence.

[0227] 2) Third indication information, the third indication information being used to indicate the ZCZ sequence phase coding modulation order or ZCZ sequence phase coding modulation base;

[0228] Optionally, the third indicator information indicates the ZCZ sequence type m-PSK; equivalently, the third indicator information indicates the value of m. Common values ​​for m include 2 and 4, indicating BPSK and QPSK respectively. In addition, m can also be any other integer greater than 1.

[0229] 3) Fourth indication information, which indicates the maximum number of available ZCZ sequences (M) in the ZCZ sequence set. ZCZ );

[0230] Optionally, the fourth indication information indicates the maximum number of available sequences in the ZCZ sequence set used for sensing. For MIMO sensing, this satisfies M ≤ M0. ZCZ .

[0231] 4) Fifth indication information, which is used to indicate the length (Z) of the zero cross-correlation region of the ZCZ sequence;

[0232] Optionally, the length (Z) of the zero cross-correlation region of the ZCZ sequence can be directly configured, or it can be combined with the length (N) of the second sequence and the number (M) of the ZCZ sequences in the ZCZ sequence set. ZCZ It is associated with at least one of the following: perception requirements, prior perception information, historical perception measurement values, historical perception results, and historical perception performance evaluation indicators.

[0233] 5) Parameters used to generate the base sequence of the ZCZ sequence.

[0234] The base sequence used to generate the ZCZ sequence refers to the initial sequence used to generate the ZCZ sequence during the generation process. For example, the ZCZ sequence can be generated based on an m-sequence. In this case, the m-sequence needs to be generated first, and then the ZCZ sequence is further generated based on the m-sequence through operations or transformations. Optionally, the base sequence can be an m-sequence, a ZC sequence, a Walsh-coded sequence, or a Hadamard-coded sequence. For example, if the ZCZ sequence is generated based on an m-sequence (i.e., the base sequence of the ZCZ sequence is an m-sequence), the second sequence parameter configuration information also includes the initial value (c) of the shift register for the m-sequence used to generate the ZCZ sequence. init The parameters include at least one of the following: primitive polynomial, truncation position, etc. For example, if the ZCZ sequence is generated based on the ZC sequence (i.e., the base sequence of the ZCZ sequence is the ZC sequence), then the second sequence parameter configuration information also includes the root index of the ZC sequence and the cyclic shift value of the ZC sequence used to generate the ZCZ sequence.

[0235] In one embodiment of this application, prior to step 31, the method further includes:

[0236] The second node receives at least one of the following: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal.

[0237] Optionally, the second node receives at least one of the first node and the first device, including at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

[0238] In one embodiment of this application, the method further includes:

[0239] The second node receives at least one of the first information and the second information;

[0240] The second node determines at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal based on at least one of the first information and the second information.

[0241] The first information includes at least one of the following:

[0242] 1) Historical measurement values ​​of the sensed quantity or sensed result;

[0243] Optionally, the sensing measurement or sensing result includes at least one of the following: the departure azimuth angle of the sensing target, the departure pitch angle of the sensing target, the departure azimuth angle of at least one target path, and the departure pitch angle of at least one target path.

[0244] 2) Historical measurements of perceived performance evaluation indicators;

[0245] 3) Perceiving prior information;

[0246] Optionally, the perceived prior information includes at least one of the following:

[0247] a) The location coordinates, or range of location coordinates, of at least one perceived target;

[0248] b) The angular range of at least one perceived target;

[0249] Optionally, the angle range includes at least one of the departure azimuth angle and departure pitch angle;

[0250] c) The angular range of at least one target path;

[0251] d) Perceive the number of targets;

[0252] e) Number of target paths;

[0253] f) The position coordinates of at least one second node, or the angle and distance of at least one second node relative to at least one first node;

[0254] g) Prior information about the channel state;

[0255] Optionally, the channel state prior information includes at least one of the following: the LOS or NLOS state from at least one first node or at least one second node to at least one sensing target, the LOS or NLOS state between at least one node and at least one second node, the coherence time of the channel formed by at least one target path, the coherence time of the channel between at least one first node and at least one second node, the angular spread of the channel formed by at least one target path, and other information related to the channel state.

[0256] h) Prior environmental information;

[0257] Optionally, prior environmental information includes: the position coordinates, angle information, or distance information of at least one major environmental reflector in the perceived environment.

[0258] Optionally, the angle information includes at least one of the following: the departure azimuth or departure pitch angle of the environmental reflector relative to at least one first node, the arrival azimuth or arrival pitch angle of the environmental reflector relative to at least one second node, and the angular relationship of the environmental reflector relative to at least one sensing target. The angular relationship can be understood as, in a pre-defined coordinate system, at least one of the azimuth and pitch angles of the environmental reflector relative to the at least one sensing target.

[0259] Optionally, the distance information includes the distance between the environmental reflector and at least one of the first node, the second node, and the sensing target.

[0260] 4) Perceive demand information;

[0261] Optionally, the sensing requirement information includes at least one of the following: sensing service type, sensing service priority, sensing detection probability, sensing false detection probability, sensing recognition accuracy requirement, sensing resolution requirement, sensing precision requirement, sensing error requirement, sensing delay budget, maximum sensing range requirement, continuous sensing capability requirement, and sensing update frequency requirement.

[0262] The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

[0263] Optionally, the antenna port topology includes at least one of the following: the topology information in physical space of the preset reference point of the physical subarray or the physical antenna element to which the antenna port is connected.

[0264] Optionally, the physical antenna array information includes at least one of the following:

[0265] 1) The relationship between physical antenna elements or physical subarrays and antenna ports;

[0266] 2) Number of physical subarrays;

[0267] Optionally, the number of physical subarrays includes at least one of the number of physical subarrays in the horizontal direction and the number of physical subarrays in the vertical direction;

[0268] 3) Number of physical antenna array elements within the physical subarray

[0269] Optionally, the number of physical antenna array elements includes at least one of the number of physical antenna array elements in the horizontal direction and the number of physical antenna array elements in the vertical direction;

[0270] 4) Spacing between preset reference points of the physical subarray;

[0271] Optionally, the spacing includes at least one of the horizontal element spacing and the vertical element spacing;

[0272] 5) Spacing between physical antenna elements within the physical subarray;

[0273] 6) Physical subarray configuration information;

[0274] Optionally, the physical subarray configuration information is used to indicate that the physical subarray is at least one of the following: linear array, rectangular area array, circular array, cylindrical array, etc.

[0275] 7) Orientation information of the physical antenna array (panel);

[0276] Optionally, the orientation information of the physical antenna array (panel) includes at least one of the following: the angle between the normal direction of the physical antenna array panel and any coordinate axis of the coordinate system in the preset coordinate system, and the angle between the parallel line direction of the physical antenna array panel and any coordinate axis of the coordinate system in the preset coordinate system.

[0277] 8) Physical antenna array aperture;

[0278] Optionally, the physical antenna array aperture includes at least one of the physical subarray aperture and the entire physical antenna array aperture;

[0279] 9) Physical antenna polarization characteristics;

[0280] 10) Physical antenna array element gain;

[0281] Optionally, the physical antenna element gain includes antenna gain in different directions, i.e., 2D or 3D antenna pattern.

[0282] Optionally, the second node receiving at least one of the first information and the second information includes: the second node receiving at least one of the first node and the first device, and at least one of the first information and the second information sent.

[0283] In one embodiment of this application, the number of the first sequence parameter configuration information is: When the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different.

[0284] In one embodiment of this application, the number of the first sequence parameter configuration information is: When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different.

[0285] In one embodiment of this application, a first sequence parameter configuration information is associated with at least one second sequence parameter configuration information.

[0286] In one embodiment of this application, a second sequence parameter configuration information is associated with at least one first sequence parameter configuration information.

[0287] In one embodiment of this application, the time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to... At least one of the K time-frequency resources or time-frequency resource sets (or resource or resource set indexes) is associated with at least one of the following:

[0288] 1) At least one of the first sequence parameter configuration information;

[0289] 2) At least one of the second sequence parameter configuration information.

[0290] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient.

[0291] In another embodiment of this application, the value of the second coefficient includes one or more discrete values, each of which corresponds to an index of the second coefficient.

[0292] In one embodiment of this application, the value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient is associated with third information;

[0293] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0294] In this embodiment, the second node determines a third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal. The second node receives the first signal, which is transmitted by the first node based on the third sequence. The first sequence parameter configuration information and the second sequence parameter configuration information are configuration parameters for the first node's transmission array when it is a linear array or a planar array. Through flexible parameter configuration, a beam with a specific direction or angle range can be formed, so that the signal gain within the beam range is constant. This can simultaneously take into account multi-port sensing and beamforming, ensuring angular resolution while improving the accuracy and reliability of multi-port sensing.

[0295] Referring to Figure 4, an embodiment of this application provides a signal processing method, the specific steps of which include: step 41 and step 42.

[0296] Step 41: The first device determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0297] Optionally, the first device includes core network equipment.

[0298] Step 42: The first device determines the second sequence according to the second sequence parameter configuration information, the second sequence parameter configuration information including at least one of the following: first indication information, the first indication information being used to indicate the type of the second sequence; the length of the second sequence, the second sequence including at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ zero cross-correlation region sequence;

[0299] Step 43: The first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node;

[0300] Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

[0301] Optionally, the time-frequency resource configuration information includes at least one of the following: starting frequency, starting time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

[0302] It is understood that this application does not specify the order of steps 41, 42, and 43. For example, steps 41, 42, and 43 can be executed in sequence, or steps 42, 41, and 43 can be executed in sequence, or at least two of steps 41, 42, and 43 can be executed simultaneously.

[0303] In one embodiment of this application, the expression for the first sequence is:

[0304] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0305] Optionally, when α1 = 1, the zero-delay correlation matrix R0 calculated using the first sequence above is N multiplied by an identity matrix, corresponding to the orthogonality of the signals at each transmit antenna port; when α1 = 0, R0 is N multiplied by all 1s, corresponding to the correlation of the signals at all transmit antenna ports; when 0 < α1 < 1, the beam is a constant gain beam within a certain angle range, and the beamwidth is proportional to α1.

[0306] Optionally, if α2 = α1 and no beam rotation is performed, the beam direction formed based on the first signal of the first sequence is facing the broadside direction.

[0307] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence.

[0308] In one embodiment of this application, when the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0309] In one embodiment of this application, when the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: the root number of the ZC sequence and the cyclic shift value of the ZC sequence.

[0310] In one embodiment of this application, when the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index.

[0311] In one embodiment of this application, when the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0312] In one embodiment of this application, when the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0313] 1) Second indication information, the second indication information being used to indicate the method for generating the ZCZ sequence;

[0314] Optionally, the generation method includes, but is not limited to, at least one of the following: base sequence-based generation method, table lookup generation method, wherein the base sequence includes, but is not limited to, at least one of the following: m sequence, ZC sequence.

[0315] 2) Third indication information, the third indication information being used to indicate the ZCZ sequence phase coding modulation order or ZCZ sequence phase coding modulation base;

[0316] Optionally, the third indicator information indicates the ZCZ sequence type m-PSK; equivalently, the third indicator information indicates the value of m. Common values ​​for m include 2 and 4, indicating BPSK and QPSK respectively. In addition, m can also be any other integer greater than 1.

[0317] 3) Fourth indication information, which indicates the maximum number of available ZCZ sequences (M) in the ZCZ sequence set. ZCZ );

[0318] Optionally, the fourth indication information indicates the maximum number of available sequences in the ZCZ sequence set used for sensing. For MIMO sensing, this satisfies M ≤ M0. ZCZ .

[0319] 4) Fifth indication information, which is used to indicate the length (Z) of the zero cross-correlation region of the ZCZ sequence;

[0320] Optionally, the length (Z) of the zero cross-correlation region of the ZCZ sequence can be directly configured, or it can be combined with the length (N) of the second sequence and the number (M) of the ZCZ sequences in the ZCZ sequence set. ZCZ It is associated with at least one of the following: perception requirements, prior perception information, historical perception measurement values, historical perception results, and historical perception performance evaluation indicators.

[0321] 5) Parameters used to generate the base sequence of the ZCZ sequence.

[0322] Optionally, the base sequence can be an m-sequence, a ZC sequence, a Walsh-coded sequence, or a Hadamard-coded sequence. For example, if the ZCZ sequence is generated based on an m-sequence, the second sequence parameter configuration information also includes the initial value (c) of the shift register used to generate the ZCZ sequence. init At least one of the following: primitive polynomial, truncation position, etc.

[0323] In one embodiment of this application, prior to step 41 or 42, the method further includes:

[0324] The first device determines at least one of the following: at least one first sequence parameter configuration information, at least one second sequence parameter configuration information, and time-frequency resource configuration information of the first signal;

[0325] The first information includes at least one of the following: historical measurement values ​​of sensing quantities or sensing results, historical measurement values ​​of sensing performance evaluation indicators, sensing prior information, and sensing requirement information; the second information includes at least one of the following: antenna port information of the first node and physical antenna array information of the first node.

[0326] Optionally, if the first device only determines the time-frequency resource configuration information of the first signal, the first device only sends the time-frequency resource configuration information of the first signal to the first node or the second node.

[0327] In one embodiment of this application, the first device determines at least one of at least a first sequence parameter configuration information, at least a second sequence parameter configuration information, and time-frequency resource configuration information of the first signal, including:

[0328] The first device acquires at least one of the first information and the second information, and determines at least one of the following: at least one first sequence parameter configuration information, at least one second sequence parameter configuration information, and time-frequency resource configuration information of the first signal, based on the first information and the second information.

[0329] In one embodiment of this application, the first device acquires at least one of the first information and the second information, including:

[0330] The first device receives at least one of the first information and the second information sent by at least one of the first node and the second node.

[0331] In one embodiment of this application, the method further includes:

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

[0333] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient.

[0334] In one embodiment of this application, the value of the second coefficient includes one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

[0335] In one embodiment of this application, the value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient is associated with third information;

[0336] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0337] In one embodiment of this application, before determining the first sequence parameter configuration information or the second sequence parameter configuration information, the method further includes: the first device acquiring third information.

[0338] In one embodiment of this application, the method further includes: a first device determining second sequence parameter configuration information based on third information.

[0339] When multiple targets need to be sensed simultaneously, the first signal configured by the first device can be associated with the sensing target or sensing area. Different sensing targets / sensing areas can be configured with different or the same first signal for sensing. Specifically, the first device forms beams with different directions and widths by configuring different first sequence configuration information. For example, the first signal beams corresponding to different first sequences can be orthogonal (equivalent to different first sequences being orthogonal). In this case, the second sequence used to determine the different first signals can be the same. Or, for another example, the first signal beams corresponding to different first sequences do not satisfy the orthogonality relationship (equivalent to different first sequences being correlated) and have partial overlap. In this case, the second sequence used to determine the different first signals can be a sequence with low cross-correlation or orthogonality.

[0340] In this embodiment, the first device determines a first sequence of antenna ports of the first node based on the first sequence parameter configuration information; the first device determines a second sequence based on the second sequence parameter configuration information; the first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node; wherein the first sequence parameter configuration information and the second sequence parameter configuration information are configuration parameters when the transmitting array of the first node is a linear array or a planar array. Through flexible parameter configuration, a beam in a specific direction or a specific angle range can be formed, so that the signal gain within the beam range is constant, which can simultaneously take into account multi-port sensing and beamforming, ensuring angular resolution while improving the accuracy and reliability of multi-port sensing.

[0341] The following descriptions are based on Examples 1, 2, 3, and 4.

[0342] Example 1: Configuration process for the first signal.

[0343] The specific steps of the configuration process for the first signal in this application are as follows:

[0344] Step 1: At least one of the first node and the first device obtains the first information.

[0345] Optionally, at least one of the first node and the first device acquires the first information, including any of the following:

[0346] (1) The first node obtains first information, which is sent to the first node by at least one of the first device and the second node;

[0347] (2) The first node and the first device obtain the first information, which is then sent from the second node to the first device, and the first device then sends the first information back to the first node;

[0348] (3) The first device acquires first information, which is sent from the second node to the first node;

[0349] Optionally, the first device acquires the second information, which is sent from the first node to the first device.

[0350] Step 2: At least one of the first node and the first device determines at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal based on at least one of the first information and the second information.

[0351] Step 3: At least one of the first node and the first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to the second node.

[0352] Optionally, at least one of the first node and the first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to the second node, including any of the following:

[0353] (1) The first node sends at least one of the following to the second node: first sequence parameter configuration information, second sequence parameter configuration information, time-frequency resource configuration information of the first signal, first information, and second information;

[0354] (2) The first device sends at least one of the following to the second node: first sequence parameter configuration information, second sequence parameter configuration information, time and frequency resource configuration information of the first signal, first information, and second information;

[0355] (3) The first device sends at least one of the following to the first node: first sequence parameter configuration information, second sequence parameter configuration information, time-frequency resource configuration information of the first signal, first information, and second information; the first node sends at least one of the following to the second node: first sequence parameter configuration information, second sequence parameter configuration information, time-frequency resource configuration information of the first signal, first information, and second information.

[0356] Specifically, the first node sends at least one of the following to the second node: the first sequence parameter configuration information, the second sequence parameter configuration information, the time-frequency resource configuration information of the first signal, the first information, and the second information. This information can be carried via broadcast or multicast in a Physical Broadcast Channel (PBCH) or a System Information Block (SIB), or via unicast in Radio Resource Control (RRC) or Downlink Control Information (DCI). Alternatively, a combination of both can be used; for example, broadcast messages can indicate some common information, while unicast messages can indicate other user-specified information.

[0357] Alternatively, at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, the time-frequency resource configuration information of the first signal, the first information, and the second information can be carried in Non-Access Stratum (NAS) signaling (to AMF) or RRC signaling or Medium Access Control (MAC) control element (CE) or Uplink Control Information (UCI); it can also be reported through the user plane (e.g., Protocol Data Unit (PDU) session in the core network and Data Radio Bearer (DRB) on the RAN side).

[0358] Step 4: At least one of the first node and the second node determines the first signal based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal; the first node sends the first signal, the second node receives the first signal, performs sensing, and senses the measurement value or sensing result.

[0359] Step 5: The second node sends the sensed measurement value or sensed result to at least one of the first device and the first node;

[0360] Optionally, after step 5, at least one of the first device, the first node, and the second node sends the sensing measurement value or sensing result to the sensing demand party, such as the sensing demand party including but not limited to the application server.

[0361] Example 2: Regarding the first signal (e.g., area array multi-port sensing signal).

[0362] If the first node's transmitting array is a planar array, meaning that the number of physical subarrays or physical antenna elements corresponding to the transmitting antenna array ports is greater than 1 in both the horizontal and vertical directions, the first sequence can be determined by the following method.

[0363] Assume the number of ports on the first node (sensing signal transmitter) is M = M h M v Using both horizontal index i1 and vertical index i2 to represent the first sequence of the i1th transmit antenna port in the horizontal direction and the i2th transmit antenna port in the vertical direction, can be represented as follows: Where N is the length of the first sequence sent. Representing this first sequence as a vector, we have:

[0364] in, It can be viewed as a signal component containing amplitude and phase information in both the horizontal and vertical directions, where the vector The dimension is M h ×1, The i1th element; vector The dimension is M v ×1, If the element is the i2th element, then we have

[0365] in,

[0366] It can be proven that, based on the above equations (4), (5), and (6), we obtain M = M h M v The first sequence of ports By changing the first coefficient a 1,1 ,a 2,1 and the second coefficient a 1,2 ,a 2,2 It can generate beams of different widths and directions (angular directions) in the azimuth and elevation dimensions of the area array.

[0367] Therefore, based on this embodiment, when the transmission array is a planar array, the first coefficient in the first sequence parameter configuration information includes the aforementioned a. 1,1 ,a 2,1 The second coefficient includes the aforementioned a. 1,2 ,a 2,2 .

[0368] Example 3: Method for determining the first and second coefficients.

[0369] For certain sensing scenarios, one implementation involves pre-configuring several typical values ​​for the first or second coefficient in the first sequence parameter configuration information. When indicating the parameters, only the index of the typical value needs to be indicated, rather than dynamically indicating consecutive values ​​within the range of 0 to 1 each time. In some cases, it is only necessary to ensure that the beam formed by the first signal covers the sensing target and meets the sensing requirements; the value of the first or second coefficient does not need to be unique. This embodiment provides a method for determining the first and second coefficients.

[0370] In some implementations, the first coefficient and the second coefficient in the first sequence parameter configuration information are preset discrete values, and each discrete value is associated with a different first coefficient index and a different second coefficient index.

[0371] In some implementations, the first coefficient and the second coefficient are preset discrete values, or the indices of the first coefficient and the second coefficient can be associated with third information, which includes at least one of the following:

[0372] (1) Sensory area identification;

[0373] (2) Whether it is used for perception identification, or perception business identification, or perception business type identification;

[0374] (3) Perceive target identifiers and the tags associated with the perceived targets;

[0375] (3) Sensing measurement quantity labeling;

[0376] (4) The device identifier involved in the sensing measurement, such as the cell identifier or terminal identifier (e.g., Radio Network Temporary Identifier (RNTI));

[0377] (5) Time-domain or frequency-domain resource information;

[0378] Optional, time-domain or frequency-domain resource information includes one of the following:

[0379] (a) Information related to time-domain resources;

[0380] Optionally, the time-domain resource-related information includes at least one of the following: radio frame index, subframe index, slot index, symbol index, duration, time-domain density, cyclic prefix (CP) type, CP length, and coherent processing time window index.

[0381] (b) Information related to frequency domain resources;

[0382] Optionally, the frequency domain resource-related information includes at least one of the following: resource element (RE) index, resource block (RB) index, frequency point information, frequency band information, bandwidth, frequency domain density, and subcarrier spacing;

[0383] (c) Perceive resource block index;

[0384] Optionally, the sensing resource block contains multiple PRBs and multiple time slots or symbols, that is, it contains specific time-frequency domain resources (e.g., the frequency domain resource length and time domain resource length corresponding to the distance-Doppler map are obtained by performing a two-dimensional fast Fourier transform (FFT) operation).

[0385] (d) Port index or antenna index;

[0386] (e) Codeword index.

[0387] In one implementation, at least one of the first node and the first device acquires third information, and determines the value of the first coefficient or the second coefficient in the first sequence parameter configuration information, or the first coefficient index or the second coefficient index, based on at least one of the third information.

[0388] Optionally, at least one of the first node and the first device may also determine the second sequence parameter configuration information based on the third information.

[0389] Example 4: Introduction of relevant terms in the above examples.

[0390] 1) Zero-delay correlation matrix for the first sequence.

[0391] The expression for the first sequence is:

[0392] in, a1 is the first coefficient, a2 is the second coefficient, and 0≤a1,a2≤1.

[0393] When a1 = a2, based on the first sequence and according to the formula for proportional summation, the signal S at the i-th transmit antenna port is... i [n] and the signal S of the kth transmitting antenna port k The cross-correlation of [n] is:

[0394] According to Euler's formula Further

[0395] The above corresponds to the element in the i-th row and k-th column of the zero-delay correlation matrix R0. Clearly, when α = 0, let πα(ik) = x, since... Therefore r ik =N, so R0 is an N-multiplied matrix of all 1s, corresponding to the correlation of signals at all transmit antenna ports; when α = 1, if i ≠ k, obviously sinπα(ik) = sinπ(ik) = 0; if i = k, r ik =N, so the zero-delay correlation matrix R0 calculated using the first sequence above is N multiplied by the identity matrix, which corresponds to the orthogonality of the signals at each transmit antenna port; when 0<α<1, the beam is a constant gain beam within a certain angle range, and the beamwidth is proportional to α.

[0396] 2) Regarding the measurement of sensed quantities.

[0397] Optional, the perceived measurement includes at least one of the following:

[0398] (1) First-level measurement quantity;

[0399] Optionally, the first-level measurement quantities include: the complex result of the received signal or channel response, amplitude or phase, I-channel or Q-channel and their operation results, at least one of these.

[0400] The operations include at least one of addition, subtraction, multiplication, and division; matrix addition, subtraction, and multiplication; matrix transpose; trigonometric operations; square root operations; and exponentiation operations, as well as at least one of the following: threshold detection results and maximum or minimum value extraction results of the above operations. The operations also include at least one of the following: Fast Fourier Transform (FFT) or Inverse Fast Fourier Transform (IFFT); Discrete Fourier Transform (DFT) or Inverse Discrete Fourier Transform (IDFT); 2D-FFT; 3D-FFT; matched filtering; autocorrelation operations; wavelet transform; and digital filtering, as well as at least one of the following: threshold detection results and maximum or minimum value extraction results of the above operations.

[0401] This first-level measurement can be regarded as the received signal or the raw channel information.

[0402] (2) Second-level measurement quantity;

[0403] Optionally, the second-level measurement quantities include at least one of time delay, Doppler, angle, and intensity, and their multidimensional combination representations.

[0404] This second-level measurement can be regarded as a basic measurement.

[0405] (3) Third-level measurement quantity;

[0406] Optionally, the third-level measurement includes at least one of the following: distance, velocity, orientation, spatial position, and acceleration.

[0407] This third-level measurement can be regarded as the basic attribute or state of the perceived target.

[0408] (4) Fourth-level measurement quantity;

[0409] Optionally, the fourth level of measurement includes at least one of the following: target presence, trajectory, movement, facial expression, vital signs, quantity, imaging results, weather, air quality, shape, material, and composition.

[0410] This fourth-level measurement can be viewed as an advanced attribute or state.

[0411] (5) Perception results;

[0412] Optionally, the perception result may be the measurement value of the aforementioned perception measurement quantity, obtained through further calculations (including addition, subtraction, multiplication, division, or according to a predetermined function). The perception result may also be the measurement value of at least one of the aforementioned perception measurement quantities.

[0413] Optionally, the perceived measurement also includes corresponding label information, which includes at least one of the following:

[0414] (a) Sensing signal identification information;

[0415] (b) Sensing measurement configuration identification information;

[0416] (c) Sensing business information, such as sensing business identifiers (IDs);

[0417] (d) Data subscription ID;

[0418] (e) Purpose of the measurement;

[0419] Optional uses include, but are not limited to, at least one of communication, sensing, and synesthesia;

[0420] (f) Time information, such as timestamps;

[0421] (g) Sensing node information;

[0422] Optionally, the sensing node information includes, but is not limited to, at least one of UE ID, node location, and device orientation;

[0423] (h) Sensing link information;

[0424] Optionally, the sensing link information includes, but is not limited to, at least one of the sensing link sequence number and the transceiver node identifier;

[0425] (i) Measurement description information;

[0426] Optionally, the measurement description information includes, but is not limited to, at least one of the following: amplitude value, phase value, complex value combining amplitude and phase, resource type, time-domain measurement result, and frequency-domain resource measurement result;

[0427] (j) Measurement index information;

[0428] Optionally, the measurement metrics include, but are not limited to, at least one of signal-to-noise ratio (SNR) and perceived SNR.

[0429] 3) Regarding the target path.

[0430] The multipath between the first node and the second node is divided as follows:

[0431] (1) The first target path is a multipath from the first node to the perceived target and then to the second node, without passing through the environmental reflector (i.e., the reflector in Figure 5); for example, the multipath OAP in Figure 5;

[0432] (2) The second target path is a multipath from the first node to the environmental reflector, then to the perceived target, and then to the second node; for example, the multipath OBAP in Figure 5;

[0433] (3) The third target path is a multipath from the first node to the perceived target, then to the environmental reflector, and then to the second node; for example, the multipath OACP in Figure 5;

[0434] (4) The fourth target path is a multipath from the first node to the environmental reflector, then to the perceived target, then to the environmental reflector, and then to the second node; for example, the multipath OBACP in Figure 5;

[0435] (5) The fifth target path is a multipath that does not pass through the perceived target, including the direct path from the first node to the second node, such as the multipath OP in Figure 5; and the multipath from the first node to the environmental reflector and then to the second node, such as the multipath OBP and multipath ODEP in Figure 5.

[0436] Optionally, the first target path, the second target path, the third target path, the fourth target path, and the fifth target path can constitute a multipath communication channel.

[0437] Among the aforementioned multipath types, those associated with the sensing target, including the first target path, second target path, third target path, and fourth target path, can provide the second node (sensing receiver) with sensing target information from different observation perspectives. Given prior information about the environmental reflectors (e.g., reflection coefficient, position, distance, relative angle, etc.), or if this information can be determined simultaneously during measurement, the second node can achieve superior sensing performance compared to using only the first target path by additionally utilizing any one of the second to fourth target paths, in addition to the first target path. This includes improved sensing SNR or signal-to-interference-plus-noise ratio (SINR), enhanced detection performance, improved sensing accuracy, and acquisition of more comprehensive sensing information.

[0438] Multipaths not directly associated with the sensing target, i.e., the fifth target path, are generally considered self-interference and background clutter. However, if some prior sensing information is known, such as the first and second nodes, or the position coordinates and state (including whether it is stationary or in motion, i.e., velocity magnitude and direction) of environmental reflectors, the fifth target path can be used to eliminate non-ideal factors between the first and second nodes, such as carrier frequency offset, timing offset, sampling frequency offset, random phase, etc. Furthermore, through sensing measurements, the second node determines the state of environmental reflectors based on such multipaths. This measurement information can be further used to subsequently determine the sensing target information, or to determine the second to fourth target path information.

[0439] The environmental reflector can be a whole composed of one or more physical objects in the environment.

[0440] 4) Regarding the evaluation indicators for perceived performance.

[0441] Perception performance evaluation indicators can be calculated based on perception measurements, and include at least one of the following:

[0442] (1) Target indicators, for specific definitions and calculation methods, please refer to the description in "5) About target indicators";

[0443] (2) The statistical mean, standard deviation or variance of multiple measurements of the same perceptual quantity;

[0444] (3) The deviation between the predicted value of the perceived measurement or the actual measured value, and the statistical mean, standard deviation or variance of the deviation;

[0445] (4) Evaluation indicators 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 normalized fuzzy function sidelobes with peak values ​​higher than a given threshold, or the total power or total energy, the width of the main lobe of the fuzzy function (3dB width), etc.

[0446] (5) The Cramér-Rao Lower Bound (CRLB) is the lowest variance that all unbiased estimators can achieve. Mathematically, it is equal to the reciprocal of Fisher information. This evaluation index is related to perceived SNR.

[0447] (6) Capacity-Distortion Tradeoff: This quantitatively gives the maximum achievable rate of reliable transmission in a synergistic inductive system under a given distortion constraint.

[0448] (7) Equivalent Mean Square Error (MSE): The spectral efficiency of communication is converted into the equivalent radar mean square error, and is obtained by combining the sensing Cramer-Rao lower bound.

[0449] 8) Radar Estimation-Communication Rate: The sensing channel is treated as a non-cooperative communication channel, and the mutual information between the sensing system and the target is the estimation rate.

[0450] (9) Welch Bound;

[0451] (10) Perceptual reproducibility evaluation indicators;

[0452] Optionally, perceptual reproducibility evaluation metrics include the sum of Euclidean distances between sample points of two consecutive sequences, or regularized path distances in Dynamic Time Warping (DTW), or other metrics that can reflect the similarity between two sequences.

[0453] Optionally, other metrics that can reflect the similarity between two sequences include, but are not limited to, at least one of the following: Longest Common Subsequence (LCSS), Edit Distance on Real Sequences (EDR), Edit Distance with Real Penalty (ERP), Hausdorff Distance, Fréchet Distance, One Way Distance (OWD), and Locality In-between Polylines (LIP).

[0454] (11) The calculation result is obtained by performing at least two of the above target indicators, fuzzy function related indicators, and Cramerlow lower bound (CRLB) operations, including addition, subtraction, multiplication, and division.

[0455] 5) Introduction to target indicators.

[0456] Target metrics refer to perception-related metrics measured by receiving devices such as base stations or UEs, including at least one of the following three categories:

[0457] (1) Receiver power related indicators:

[0458] Optionally, the received power-related metrics include: a first metric, which represents the linear average (in W) of the received power of the target path in the channel response measured for the first signal across the resource unit carrying the first signal. The resource unit includes at least one of a time-domain resource unit and a frequency-domain resource unit.

[0459] This first indicator can be regarded as the received power of the target path.

[0460] (2) Indicators related to interference and noise power.

[0461] Optional, interference and noise power-related metrics include at least one of the following:

[0462] (2a) Second indicator;

[0463] The second index represents the sum (in W) of the linear average power of the paths other than the target path in the channel response of the first signal on the target resource, and the linear average power of interference and noise from other signals other than the first signal on the target resource or other resources (e.g., resources configured for higher-layer signaling); wherein the target resource may be a time-frequency domain resource unit carrying the first signal.

[0464] Optionally, the second indicator = total received power - the first indicator; where the 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, the total received power = Received Signal Strength Indicator (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);

[0465] (2b) The third indicator;

[0466] The third indicator represents the linear average value (in W) of interference and noise power from signals other than the first signal on the target resource or other resources (such as resources configured for higher-level signaling); wherein the target resource may be a time-frequency domain resource unit carrying the first signal.

[0467] Optionally, the third indicator = total received power - first signal received power; where the first signal received power is the reference signal received power (RSRP) of the first signal.

[0468] (2c) Fourth indicator;

[0469] The fourth index represents the linear average power (in W) of the paths other than the target path in the channel response of the first signal on the target resource.

[0470] Optional, the fourth indicator = RSRP of the first signal - the first indicator;

[0471] (3) Metrics related to perceived SINR, SNR, signal-to-interference ratio (SIR), or reference signal received quality (RSRQ):

[0472] Optionally, the perceived SINR, SNR, SIR, or RSRQ related metrics include at least one of the following:

[0473] (3a) Fifth indicator (first type of perception SINR or SNR or SIR) = first indicator / second indicator;

[0474] (3b) The sixth indicator (second type of perception SINR or SNR or SIR) = the first indicator / the third indicator;

[0475] (3c) The seventh indicator (the third type of perception SINR or SNR or SIR) = the first indicator / the fourth indicator;

[0476] (3d) Eighth index (perceived RSRQ) = K2 * First index / Total received power, where K2 is a coefficient.

[0477] It is understood that the target path includes at least one of the following: a first target path, a second target path, a third target path, a fourth target path, and a fifth target path.

[0478] In some implementations, the calculation of the first index includes: 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 the first index. If the target path includes multiple paths, the sum of the power of the multiple paths is calculated as the first index.

[0479] The first dimension includes one of the following:

[0480] (1) Time delay dimension;

[0481] (2) Dopplerview;

[0482] (3) Azimuth dimension;

[0483] (4) Pitch angle;

[0484] (5) At least two of the following dimensions are combined: time delay dimension, Doppler dimension, azimuth dimension, and pitch dimension. For example, time delay-Doppler dimension, time delay-Doppler-angle dimension, etc.

[0485] 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).

[0486] In this application, the method for determining the target path in the channel response obtained from the measurement of the first signal includes:

[0487] Step 1: Determine the first path set. The paths in the first path set include those whose amplitude, power, intensity, or energy exceeds a certain threshold after the channel response is transformed to the first dimension. (For example, in Figure 6, paths 0, 1, 2, and 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.

[0488] It should be noted that step 1 is an optional step, and the target path can be determined based solely on step 2.

[0489] Step 2: Select the path that satisfies the first condition from the first path set or from all paths, and use it as the target path.

[0490] Optionally, the first condition includes at least one of the following:

[0491] (1) The amplitude, power, intensity or energy of the path exceeds the preset threshold or is within the preset range; for example, the preset threshold is 6dB above the noise threshold.

[0492] (2) The Doppler of the diameter exceeds the preset threshold or is within the preset range;

[0493] (3) The delay of the path exceeds the preset threshold or is within the preset range;

[0494] (4) The angle of the radius exceeds the preset threshold or is within the preset range;

[0495] (5) The difference between the amplitude, power, intensity, or energy of the first-reaching path (e.g., the LOS path) or the reference path (e.g., the signal path reflected by a known target (e.g., a reconfigurable intelligent surface (RIS) or a backscatter device or other known passive target) exceeds a preset threshold or is within a preset range.

[0496] (6) 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 or Backscatter device or other known passive target)) exceeds a preset threshold or is within a preset range;

[0497] (7) 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., a RIS or Backscatter device or other known passive target)) exceeds a preset threshold or is within a preset range.

[0498] (8) 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., a RIS or Backscatter device or other known passive target)) exceeds a preset threshold or is within a preset range;

[0499] (9) The amplitude, power, intensity, energy or phase of the path satisfies a specific modulation rule, which is the modulation rule of the Tag or Backscatter device or RIS, that is, the target path can be a path that has been modulated and reflected by the Tag or Backscatter device or RIS.

[0500] The first condition mentioned above can also be 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 preset threshold or falling within the preset range within the preset time window reaches the preset proportion, or the number of times the above indicators (such as Doppler of the path, delay of the path, etc.) exceed the preset threshold or fall within the preset range within the preset time window reaches the preset number.

[0501] The preset threshold or set range is sent to the receiving device by other devices, and determined by those other devices based on prior sensing information or sensing requirements. Alternatively, the preset threshold or set range is determined by the receiving device based on prior sensing information or sensing requirements.

[0502] Among them, the perception of prior information or perception needs includes at least one of the following:

[0503] (1) Perception services or perception service types, wherein the perception services may include at least one of the following: detection of target existence, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, composition analysis, shape detection, category classification, radar cross section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading, gait recognition, expression recognition, facial recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity or brightness or temperature or atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography or building or vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc.

[0504] The sensing service types can be categorized 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 and identity recognition). They can also be categorized by sensing range (near-range, medium-range, and long-range sensing), by sensing precision (coarse-grained sensing and fine-grained sensing), by power consumption, or by resource usage. 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., males: 13–21 breaths / minute, females: 15–20 breaths / minute; adults: 12–20 breaths / minute, children: approximately 30–40 breaths / minute), which can serve as prior information for sensing.

[0505] (2) Target area: refers to the location area of ​​the perceived object, or the location area that needs to be imaged or reconstructed; for example, the preset range of the time delay for determining the target path based on the approximate location / distance of the perceived object.

[0506] (3) Sensing object type: Sensing objects are classified according to their possible motion characteristics. Each sensing object type contains information such as the motion velocity range, motion acceleration range, and typical RCS range of typical sensing objects.

[0507] (4) The number of targets perceived; for example, the camera's perception results, as a kind of prior information, can be used to determine the number of targets perceived;

[0508] For example, in Figure 6, paths 0, 1, 2, and 3 are paths in the first path set, where paths 2 and 3 are sensing paths that satisfy the first condition (e.g., their time delay meets a preset threshold), and paths 0 and 1 are paths associated with other scatterers.

[0509] For Frequency Range 1, the reference point for the first metric can be the antenna connector of the receiving device, such as a terminal. For Frequency Range 1, if the receiving device has multiple receiving channels, the first metric measured and reported by the receiving device cannot be lower than the metric of any single receiving channel. For Frequency Range 2, the first metric measured for a given receiving channel needs to be obtained by measuring the combined signal on multiple antenna elements corresponding to that receiving channel.

[0510] In other implementations, the first indicator is calculated as follows:

[0511] Optionally, when calculating the received power of the target path, it can also be the power of the target path in the first dimension combined with... The difference is used as the first 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.

[0512] In some implementations, the received power of the first signal is calculated as follows:

[0513] The received power of the first signal can be obtained by the receiving device 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.

[0514] In other implementations, the received power of the first signal is calculated as follows:

[0515] 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.

[0516] In some implementations, the total received power is calculated as follows:

[0517] Total received power

[0518] In some implementations, the second indicator is calculated as follows:

[0519] 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., Y filter1 (k)=Hfilter1 (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.

[0520] 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, or energy of paths other than the target path in Figure 6 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; it only includes target paths.

[0521] In some implementations, the third indicator is calculated as follows:

[0522] 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.

[0523] The second filtering process can be noise interference suppression processing in the first dimension (e.g., setting the amplitude, power, intensity, or energy of other paths besides the first path set in Figure 6 to zero), or minimum mean squared 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.

[0524] In other implementations, the third indicator is calculated as follows:

[0525] 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.

[0526] If the receiving device identifies multiple sensing targets, or if the receiving device obtains the number of sensing targets based on prior sensing information or sensing requirements, the following methods are available:

[0527] Method 1: Calculate the target indicators for each sensing target separately. For example, determine the path associated with each sensing target, and then calculate the target indicators corresponding to each sensing target separately. When calculating the second indicator for a certain sensing target (e.g., sensing target A), there are two methods: Second indicator of sensing target A = Total received power - First indicator of sensing target A; or, Second indicator of sensing target A = Total received power - First indicator of sensing target A - First indicator of sensing target B; (assuming there are two sensing targets: A and B). Similarly, there are two ways to calculate the fourth indicator: Fourth indicator of sensing target A = RSRP of the first signal - First indicator of sensing target A; or, Fourth indicator of sensing target A = RSRP of the first signal - First indicator of sensing target A - First indicator of sensing target B; (assuming there are two sensing targets: A and B).

[0528] Method 2: Calculate a target index for multiple sensing targets. For example, 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.

[0529] 6) Introduction to third-party information.

[0530] Optionally, the third information includes at least one of the following:

[0531] (1) Sensory area identification:

[0532] The sensing area is the target area to be sensed, which can be pre-defined, including:

[0533] (a) Multiple base station coverage areas (cells) constitute a sensing area, which is associated with a sensing area identifier n. areaID As shown in Figure 7a, each hexagonal region represents the base station coverage area, and regions of the same color represent the same sensing area. For example, the three regions of color 1 represent the same sensing area, and the three regions of color 2 represent the same sensing area. Specifically, the RAN-based notification area (RNA) can be used as a sensing area, and the RNA ID can be used as the identifier of the sensing area.

[0534] (b) A single base station coverage area (cell) contains multiple sensing areas and is associated with multiple sensing area identifiers. For example, taking the base station as the origin, its coverage area is divided into multiple sensing areas by rasterization, and each area is associated with an area ID denoted as n. areaID As shown in Figure 7b, the dashed lines represent the base station coverage area, and each square represents a divided sensing area.

[0535] (c) Generate a region ID n using a geographic region identifier (e.g., latitude and longitude or coordinate location) that is independent of the base station location. areaID .

[0536] (d) Different angular ranges relative to the base station are associated with different region IDs n areaID For example, the azimuth angle x1°~x2° and the pitch angle y1°~y2° correspond to the sensing area ID1.

[0537] When multiple devices jointly sense the same sensing area, they use a common area ID to generate sensing signals. Optionally, the generation parameters of the sensing signals are independent of the cell identifier or UE identifier, meaning that different transmitting devices can use the same sensing signal generation parameters. This facilitates the further construction of code division orthogonal sensing signals (for example, generating a first sensing signal based on the same generation parameters, and different devices using the same first sensing signal and different orthogonal cover code (OCC) sequences to generate mutually orthogonal second sensing signals for sensing measurements). The receiving device can acquire and measure the sensing signals based on the same sensing signal generation parameters and the code division orthogonal method, reducing interference between signals from different devices, reducing signaling overhead, and improving measurement efficiency.

[0538] (2) Whether it is an identifier used for sensing, or a specific sensing service identifier, or a sensing service type identifier, or a sensing measurement quantity identifier:

[0539] Optionally, the identifier is generated based on whether it is used for sensing, a specific sensing service identifier, or a sensing service type identifier, including:

[0540] (2a) Based on whether the identifier is used for perception, n when not used for perception sensingID =0; when used for perception, n sensingID =1.

[0541] (2b) Based on specific sensing service identifiers, for example, different sensing services correspond to different sensing service IDs n sensingIDThe sensing services may include at least one of the following: detection of target presence, location, speed detection, distance detection, angle detection, acceleration detection, material analysis, composition analysis, shape detection, category classification, radar cross section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading, gait recognition, expression recognition, facial recognition, respiration monitoring, heart rate monitoring, pulse monitoring, humidity or brightness or temperature or atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building or vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc.

[0542] (2c) Identifier of the sensing service type; different categories correspond to different sensing service IDs. sensingID For example, sensing functions or business types can be divided according to their scope, such as:

[0543] Category 1 (close range or small area): material analysis, composition analysis, gesture recognition, lip reading, gait recognition, facial expression recognition, face recognition, respiration monitoring, heart rate monitoring, pulse monitoring, etc.

[0544] Category 2 (medium distance or medium range): Intrusion detection, quantity counting, indoor positioning, etc.

[0545] The third category (long distance or large area): humidity, brightness, temperature or atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building or vegetation distribution detection, pedestrian or vehicle flow detection, etc.

[0546] (2d) Other classification criteria, such as classifying according to function into positioning perception, imaging perception, pattern recognition perception, etc.; or according to power consumption / energy consumption, or according to resource usage, etc.

[0547] (2e) Generate a sensing signal based on the measurement quantity identifier, that is, associate at least one of the sensing measurement quantities with a measurement quantity identifier, see Table 2:

[0548] Table 2

[0549] (3) Perceived target identifier (or the tag identifier associated with the perceived target):

[0550] Optionally, the perceived target identifier (or the tag identifier associated with the perceived target) includes:

[0551] (3a) The signal transmitting device acquires the identifier of the sensing target; different sensing targets correspond to different sensing target IDs. targetIDThe determination of the sensing target can be based on prior information obtained from existing measurement results. For example, base station A can perform preliminary measurements by sending sensing measurement signals through an omnidirectional beam. Base station A can obtain a range-Doppler image (or range-angle image, etc.), determine the number of targets based on the range-Doppler image, and assign an ID to each target. Alternatively, base station A can perform preliminary measurements by sending sensing measurement signals through an omnidirectional beam. The receiving device (e.g., other base stations or terminals) can obtain a range-Doppler image (or range-angle image, etc.), determine the number of targets based on the range-Doppler image, assign an ID to each target, and then notify the sending base station of the target ID or target-related information.

[0552] After the signal transmitting device determines the ID of each target, it generates signals for sensing different targets based on the different target IDs. These sensing signals are transmitted using different beams, with the beam direction pointing to the sensing target associated with the target ID.

[0553] (3b) The target being sensed is equipped with a tag, and different tags are associated with different tag IDs. The transmitting device obtains the tag ID of the corresponding target, and then obtains the signal used to sense different targets. The tag can be a device that supports backscatter communication, and its excitation source can be a device other than the tag, or the excitation source can be the tag itself. It can also be a UE, that is, a regular transceiver module is installed on the target being sensed, such as a communication device such as an in-vehicle terminal installed in a car.

[0554] (3c) Identification of the perceived target type. Different types correspond to different perceived target IDs. For example, they are divided into stationary targets and moving targets. The latter can be further divided into high-speed targets and low-speed targets. Different types of targets correspond to different n. targetID .

[0555] Referring to Figure 8, an embodiment of this application provides a signal processing device applied to a first node. The device 800 includes a first transceiver unit 801 and a first processing unit 802.

[0556] The first processing unit 802 is configured to determine a first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0557] The first processing unit 802 is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which is used to indicate the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence.

[0558] The first processing unit 802 is further configured to determine a third sequence based on the first sequence and the second sequence;

[0559] The first transceiver unit 801 is used to transmit at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0560] The first transceiver unit 801 is also used to transmit the first signal in the third sequence.

[0561] In one embodiment of this application, the expression for the first sequence is:

[0562] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0563] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence;

[0564] or,

[0565] When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0566] or,

[0567] When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number, ZC sequence cyclic shift value;

[0568] or,

[0569] When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index;

[0570] or,

[0571] When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0572] or,

[0573] When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0574] The second indication information is used to indicate the method for generating the ZCZ sequence;

[0575] The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence;

[0576] The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set;

[0577] The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence;

[0578] Parameters used to generate the base sequence of the ZCZ sequence.

[0579] In one embodiment of this application, the first processing unit 802 is further configured to determine at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and time-frequency resource configuration information of the first signal based on at least one of the first information and the second information.

[0580] The first information includes at least one of the following: historical measurement values ​​of sensing quantities or sensing results, historical measurement values ​​of sensing performance evaluation indicators, prior sensing information, and sensing demand information;

[0581] The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

[0582] In one embodiment of this application, the first processing unit 802 is further configured to acquire at least one of the first information and the second information.

[0583] In one embodiment of this application, the first transceiver unit 801 is further configured to send at least one of the first information and the second information to the second node.

[0584] In one embodiment of this application, the first transceiver unit 801 is further configured to receive at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

[0585] In one embodiment of this application, when the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different;

[0586] or,

[0587] When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different;

[0588] or,

[0589] One of the first sequence parameter configuration information is associated with at least one of the second sequence parameter configuration information;

[0590] or,

[0591] One of the second sequence parameter configuration information is associated with at least one of the first sequence parameter configuration information.

[0592] In one embodiment of this application, the time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to 1, and at least one of the K time-frequency resources or time-frequency resource sets is associated with at least one of the following:

[0593] At least one of the first sequence parameter configuration information;

[0594] At least one of the second sequence parameter configuration information.

[0595] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient;

[0596] or,

[0597] The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

[0598] In one embodiment of this application, the value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient is associated with third information;

[0599] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0600] In one embodiment of this application, the time-frequency resource configuration information includes at least one of the following: start frequency, start time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

[0601] The apparatus 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.

[0602] Referring to Figure 9, an embodiment of this application provides a signal processing device applied to a second node. The device 900 includes: a second transceiver unit 901 and a second processing unit 902.

[0603] The second processing unit 902 is used to determine the third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal;

[0604] The second transceiver unit 901 is used to receive a first signal, which is sent by the first node based on the third sequence;

[0605] The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam.

[0606] The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

[0607] In one embodiment of this application, the expression for the first sequence is:

[0608] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0609] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence;

[0610] or,

[0611] When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0612] or,

[0613] When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number, ZC sequence cyclic shift value;

[0614] or,

[0615] When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index;

[0616] or,

[0617] When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0618] or,

[0619] When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0620] The second indication information is used to indicate the method for generating the ZCZ sequence;

[0621] The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence;

[0622] The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set;

[0623] The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence;

[0624] Parameters used to generate the base sequence of the ZCZ sequence.

[0625] In one embodiment of this application, the second transceiver unit 901 is further configured to receive at least one of the following: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal.

[0626] In one embodiment of this application, the second transceiver unit 901 is further configured to receive at least one of the first information and the second information;

[0627] The second processing unit 902 is further configured to determine at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and time-frequency resource configuration information of the first signal based on at least one of the first information and the second information.

[0628] The first information includes at least one of the following: historical measurement values ​​of the sensing measurement quantity or sensing result, historical measurement values ​​of the sensing performance evaluation index, sensing prior information, and sensing demand information;

[0629] The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

[0630] In one embodiment of this application, when the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different;

[0631] or,

[0632] When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different;

[0633] or,

[0634] One of the first sequence parameter configuration information is associated with at least one of the second sequence parameter configuration information;

[0635] or,

[0636] One of the second sequence parameter configuration information is associated with at least one of the first sequence parameter configuration information.

[0637] In one embodiment of this application, the time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to 1, and at least one of the K time-frequency resources or time-frequency resource sets is associated with at least one of the following:

[0638] At least one of the first sequence parameter configuration information;

[0639] At least one of the second sequence parameter configuration information.

[0640] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient;

[0641] or,

[0642] The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

[0643] In one embodiment of this application, the value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient is associated with third information;

[0644] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0645] In one embodiment of this application, the time-frequency resource configuration information includes at least one of the following: start frequency, start time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

[0646] The apparatus provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG3 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0647] Referring to Figure 10, an embodiment of this application provides a signal processing apparatus applied to a first device. The apparatus 1000 includes a third transceiver unit 1001 and a third processing unit 1002.

[0648] The third processing unit 1002 is used to determine the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node.

[0649] The third processing unit 1002 is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which is used to indicate the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence.

[0650] The third transceiver unit 1001 is used to send at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node.

[0651] Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

[0652] In one embodiment of this application, the expression for the first sequence is:

[0653] in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

[0654] In one embodiment of this application, when the second sequence includes the m-sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m-sequence shift register, the primitive polynomial of the m-sequence, and the truncation position of the m-sequence;

[0655] or,

[0656] When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence.

[0657] or,

[0658] When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number, ZC sequence cyclic shift value;

[0659] or,

[0660] When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index;

[0661] or,

[0662] When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence.

[0663] or,

[0664] When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following:

[0665] The second indication information is used to indicate the method for generating the ZCZ sequence;

[0666] The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence;

[0667] The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set;

[0668] The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence;

[0669] Parameters used to generate the base sequence of the ZCZ sequence.

[0670] In one embodiment of this application, the third processing unit 1002 is further configured to acquire at least one of the first information and the second information, and determine at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal based on the first information and the second information.

[0671] The first information includes at least one of the following: historical measurement values ​​of sensing quantities or sensing results, historical measurement values ​​of sensing performance evaluation indicators, prior sensing information, and sensing demand information;

[0672] The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

[0673] In one embodiment of this application, the third transceiver unit 1001 is further configured to send at least one of the first information and the second information to at least one of the first node and the second node.

[0674] In one embodiment of this application, the value of the first coefficient includes one or more discrete values, and each discrete value corresponds to an index of the first coefficient;

[0675] or,

[0676] The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

[0677] In one embodiment of this application, the value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient is associated with third information;

[0678] The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

[0679] The apparatus 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.

[0680] As shown in Figure 11, this application embodiment also provides a communication device 1100, including a processor 1101 and a memory 1102. The memory 1102 stores a program or instructions that can run on the processor 1101. For example, when the communication device 1100 is a terminal, the program or instructions executed by the processor 1101 implement the various steps of the method embodiments shown in Figure 2 or Figure 3 above, and can achieve the same technical effect. When the communication device 1100 is a network-side device, the program or instructions executed by the processor 1101 implement the various steps of the method embodiments shown in Figure 2, Figure 3 or Figure 4 above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0681] 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 FIG3. 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 may be the communication processing device shown in FIG9 or FIG10. Specifically, FIG12 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0682] The terminal 1200 includes, but is not limited to, at least some of the following components: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, and processor 1210.

[0683] Those skilled in the art will understand that terminal 1200 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to processor 1210 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 12 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.

[0684] It should be understood that, in this embodiment, the input unit 1204 may include a graphics processor 12041 and a microphone 12042. The graphics processor 12041 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 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include a touch detection device and a touch controller. Other input devices 12072 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.

[0685] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1201 can transmit it to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network-side device. Typically, the radio frequency unit 1201 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0686] The memory 1209 can be used to store software programs or instructions, as well as various data. The memory 1209 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 1209 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 1209 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0687] Processor 1210 may include one or more processing units; optionally, processor 1210 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 1210.

[0688] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment shown in Figure 2 or Figure 3, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0689] 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, FIG3, or FIG4. This network-side device embodiment corresponds to the above-described network-side device 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.

[0690] Specifically, this application embodiment also provides a network-side device, which may be the communication processing device shown in FIG8, FIG9, or FIG10. As shown in FIG13, the network-side device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be transmitted and sends it to the radio frequency device 1302, which processes the received information and then transmits it through the antenna 1301.

[0691] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 1303, which includes a baseband processor.

[0692] The baseband device 1303 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG13. One of the chips is, for example, a baseband processor, which is connected to the memory 1305 via a bus interface to call the program in the memory 1305 to execute the network device operation shown in the above method embodiment.

[0693] The network-side device may also include a network interface 1306, such as a Common Public Radio Interface (CPRI).

[0694] Specifically, the network-side device 1300 in this application embodiment further includes: instructions or programs stored in memory 1305 and executable on processor 1304. Processor 1304 calls the instructions or programs in memory 1305 to execute the methods executed by the modules shown in FIG8, FIG9 or FIG10 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0695] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment shown in Figure 2, Figure 3 or Figure 4, and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0696] 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 method embodiments shown in FIG2, FIG3, or FIG4 above and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0697] 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.

[0698] 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 method embodiments shown in Figure 2, Figure 3 or Figure 4 above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0699] 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.

[0700] 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 method embodiments shown in FIG2, FIG3, or FIG4 above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0701] This application also provides a wireless communication system, including a terminal and a network-side device. The terminal can be used to perform the steps of the method shown in FIG2 or FIG3 provided in this application embodiment, and the network-side device can be used to perform the steps of the method shown in FIG2, FIG3 or FIG4 provided in this application embodiment.

[0702] 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.

[0703] 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.

[0704] 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 signal processing method, comprising: The first node determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node. The first node determines the second sequence based on the second sequence parameter configuration information, which includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, which includes at least one of the following: m-sequence, ZC-sequence, Gold-sequence, Walsh-coded sequence, Hadamard-coded sequence, and zero cross-correlation region ZCZ-sequence. The first node determines the third sequence based on the first sequence and the second sequence; The first node sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal; The first node sends a first signal based on the third sequence.

2. The method according to claim 1, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

3. The method according to claim 1, wherein, When the second sequence includes the m sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m sequence shift register, the primitive polynomial of the m sequence, and the truncation position of the m sequence; or, When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence. or, When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number and ZC sequence cyclic shift value; or, When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index; or, When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence. or, When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following: The second indication information is used to indicate the method for generating the ZCZ sequence; The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence; The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set; The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence; Parameters used to generate the base sequence of the ZCZ sequence.

4. The method according to claim 1, 2, or 3, further comprising: The first node determines at least one of the following based on at least one of the first information and the second information: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal. The first information includes at least one of the following: historical measurement values ​​of sensing quantities or sensing results, historical measurement values ​​of sensing performance evaluation indicators, prior sensing information, and sensing demand information; The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

5. The method according to claim 4, further comprising: The first node acquires at least one of the first information and the second information.

6. The method according to claim 4 or 5, further comprising: The first node sends at least one of the first information and the second information to at least one of the second node and the first device.

7. The method according to claim 1, 2, or 3, further comprising: The first node receives at least one of the following: first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal.

8. The method according to claim 1, 4, or 7, wherein, When the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different; or, When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different; or, One of the first sequence parameter configuration information is associated with at least one of the second sequence parameter configuration information; or, One of the second sequence parameter configuration information is associated with at least one of the first sequence parameter configuration information.

9. The method according to claim 1, 4, or 7, wherein, The time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to 1, and at least one of the K time-frequency resources or time-frequency resource sets is associated with at least one of the following: At least one of the first sequence parameter configuration information; At least one of the second sequence parameter configuration information.

10. The method according to claim 1 or 2, wherein, The first coefficient has one or more discrete values, and each discrete value corresponds to an index of the first coefficient; or, The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

11. The method according to claim 10, wherein, The value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient are associated with the third information; The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

12. The method according to claim 1, 4, or 6, wherein, The time-frequency resource configuration information includes at least one of the following: start frequency, start time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

13. A signal processing method, comprising: The second node determines the third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal; The second node receives a first signal, which is sent by the first node based on a sequence determined by the first node based on the first sequence parameter configuration information and the second sequence parameter configuration information; The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam. The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

14. The method according to claim 13, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

15. The method according to claim 13, wherein, When the second sequence includes the m sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m sequence shift register, the primitive polynomial of the m sequence, and the truncation position of the m sequence; or, When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence. or, When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number and ZC sequence cyclic shift value; or, When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index; or, When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence. or, When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following: The second indication information is used to indicate the method for generating the ZCZ sequence; The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence; The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set; The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence; Parameters used to generate the base sequence of the ZCZ sequence.

16. The method according to claim 13 or 14, further comprising: The second node receives at least one of the following: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal.

17. The method according to claim 13 or 14, further comprising: The second node receives at least one of the first information and the second information; The second node determines at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and at least one of the time-frequency resource configuration information of the first signal based on at least one of the first information and the second information. The first information includes at least one of the following: historical measurement values ​​of the sensing measurement quantity or sensing result, historical measurement values ​​of the sensing performance evaluation index, sensing prior information, and sensing demand information; The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

18. The method according to claim 14, 16, or 17, wherein, When the number of the first sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the first sequence parameter configuration information are different; or, When the number of the second sequence parameter configuration information is greater than or equal to 2, the contents of any at least two of the second sequence parameter configuration information are different; or, One of the first sequence parameter configuration information is associated with at least one of the second sequence parameter configuration information; or, One of the second sequence parameter configuration information is associated with at least one of the first sequence parameter configuration information.

19. The method according to claim 14, 16, or 17, wherein, The time-frequency resource configuration information of the first signal is used to determine the positions of K time-frequency resources or time-frequency resource sets of the first signal, where K is greater than or equal to 1, and at least one of the K time-frequency resources or time-frequency resource sets is associated with at least one of the following: At least one of the first sequence parameter configuration information; At least one of the second sequence parameter configuration information.

20. The method according to claim 13 or 14, wherein, The first coefficient has one or more discrete values, and each discrete value corresponds to an index of the first coefficient; or, The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

21. The method according to claim 20, wherein, The value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient are associated with the third information; The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

22. The method according to claim 13, 16, 17, or 19, wherein, The time-frequency resource configuration information includes at least one of the following: start frequency, start time, bandwidth, frequency domain density, duration, time domain density, frequency offset, time offset, and silence pattern.

23. A signal processing method, comprising: The first device determines the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node. The first device determines a second sequence based on the second sequence parameter configuration information, the second sequence parameter configuration information including at least one of the following: first indication information, the first indication information being used to indicate the type of the second sequence; the length of the second sequence, the second sequence including at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ zero cross-correlation region sequence; The first device sends at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node; Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

24. The method according to claim 23, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

25. The method according to claim 23 or 24, wherein, When the second sequence includes the m sequence, the second sequence parameter configuration information further includes at least one of the following: the initial value of the m sequence shift register, the primitive polynomial of the m sequence, and the truncation position of the m sequence; or, When the second sequence includes the Gold sequence, the second sequence parameter configuration information further includes at least one of the following: an initial value of the m-sequence shift register for generating the Gold sequence, an m-sequence primitive polynomial for generating the Gold sequence, and an m-sequence truncation position for generating the Gold sequence. or, When the second sequence includes the ZC sequence, the second sequence parameter configuration information further includes at least one of the following: ZC sequence root number and ZC sequence cyclic shift value; or, When the second sequence includes the Walsh encoded sequence, the second sequence parameter configuration information further includes: a Walsh encoded sequence index; or, When the second sequence includes the Hadamard encoded sequence, the second sequence parameter configuration information further includes at least one of the following: a Hadamard encoded sequence index, an index for generating the Hadamard matrix of the Hadamard encoded sequence, a row vector index for generating the Hadamard matrix of the Hadamard encoded sequence, and a column vector index for generating the Hadamard matrix of the Hadamard encoded sequence. or, When the second sequence includes the ZCZ sequence, the second sequence parameter configuration information further includes at least one of the following: The second indication information is used to indicate the method for generating the ZCZ sequence; The third indication information is used to indicate the phase coding modulation order of the ZCZ sequence; The fourth indication information is used to indicate the maximum number of available ZCZ sequences in the ZCZ sequence set; The fifth indication information is used to indicate the length of the zero cross-correlation region of the ZCZ sequence; Parameters used to generate the base sequence of the ZCZ sequence.

26. The method according to claim 23 or 24, further comprising: The first device acquires at least one of the first information and the second information, and determines at least one of the following based on the first information and the second information: at least one of the first sequence parameter configuration information, at least one of the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal. The first information includes at least one of the following: historical measurement values ​​of sensing quantities or sensing results, historical measurement values ​​of sensing performance evaluation indicators, prior sensing information, and sensing demand information; The second information includes at least one of the following: antenna port information of the first node, and physical antenna array information of the first node.

27. The method of claim 26, further comprising: The first device sends at least one of the first information and the second information to at least one of the first node and the second node.

28. The method according to claim 23 or 24, wherein, The first coefficient has one or more discrete values, and each discrete value corresponds to an index of the first coefficient; or, The second coefficient has one or more discrete values, and each discrete value corresponds to an index of the second coefficient.

29. The method according to claim 28, wherein, The value of the first coefficient or the index of the first coefficient or the value of the second coefficient or the index of the second coefficient are associated with the third information; The third information includes at least one of the following: sensing area identifier, sensing service identifier, sensing service type identifier, identifier indicating whether it is used for sensing, sensing target identifier, tag identifier associated with sensing target, sensing measurement quantity identifier, device identifier participating in sensing measurement, time domain resource information, and frequency domain resource information.

30. A signal processing apparatus, comprising: First transceiver unit and first processing unit; The first processing unit is configured to determine a first sequence of the antenna ports of the first node based on the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node. The first processing unit is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m-sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence. The first processing unit is further configured to determine a third sequence based on the first sequence and the second sequence; The first transceiver unit is configured to send at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal; The first transceiver unit is also used to transmit the first signal in the third sequence.

31. The apparatus according to claim 30, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

32. A signal processing apparatus, comprising: Second transceiver unit and second processing unit; The second processing unit is configured to determine a third sequence based on at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal; The second transceiver unit is used to receive a first signal, which is sent by the first node based on a sequence determined by the first node based on the first sequence parameter configuration information and the second sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming, the first coefficient is used to adjust the width of the first node transmitting array beam, and the second coefficient is used to adjust the direction of the first node transmitting array beam. The second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; the length of the second sequence, which includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, ZCZ sequence.

33. The apparatus according to claim 32, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

34. A signal processing apparatus, comprising: The third transceiver unit and the third processing unit; The third processing unit is used to determine the first sequence of the antenna port of the first node according to the first sequence parameter configuration information. The first sequence parameter configuration information includes at least one of the following: a first coefficient, a second coefficient, the length of the first sequence, and a first angle. The first angle is used to determine the zero-delay correlation matrix of beamforming. The first coefficient is used to adjust the width of the transmit array beam of the first node. The second coefficient is used to adjust the direction of the transmit array beam of the first node. The third processing unit is further configured to determine a second sequence based on the second sequence parameter configuration information, wherein the second sequence parameter configuration information includes at least one of the following: first indication information, which indicates the type of the second sequence; and the length of the second sequence, wherein the second sequence includes at least one of the following: m sequence, ZC sequence, Gold sequence, Walsh encoded sequence, Hadamard encoded sequence, and ZCZ zero cross-correlation region sequence. The third transceiver unit is used to send at least one of the first sequence parameter configuration information, the second sequence parameter configuration information, and the time-frequency resource configuration information of the first signal to at least one of the first node and the second node. Wherein, the first sequence and the second sequence are used to determine the third sequence, and the third sequence is used to send the first signal.

35. The apparatus according to claim 34, wherein, The expression for the first sequence is: in, n is the sequence symbol index, N is the length of the first sequence, i is the antenna port index of the first node transmit array, M is the number of antenna ports of the first node transmit array used to transmit the first signal, a1 is the first coefficient, and a2 is the second coefficient.

36. A terminal 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 method as claimed in any one of claims 1 to 12, or the steps of the method as claimed in any one of claims 13 to 22.

37. A network-side 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 method as claimed in any one of claims 13 to 22, or the steps of the method as claimed in any one of claims 23 to 29.

38. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 12, or the steps of the method as claimed in any one of claims 13 to 22, or the steps of the method as claimed in any one of claims 23 to 29.

39. A chip comprising a processor and a communication interface coupled to the processor, the processor being configured to execute a program or instructions to implement the steps of the method as claimed in any one of claims 1 to 12, or the steps of the method as claimed in any one of claims 13 to 22, or the steps of the method as claimed in any one of claims 23 to 29.

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