Multiple-input multiple-output (MIMO) sensing method and device and communication equipment

Abstract

The invention discloses a multiple-input-multiple-output (MIMO) sensing method and device and communication equipment, and belongs to the technical field of communication, and the MIMO sensing method comprises the steps that a first node obtains first information, and the first information is configuration information of a first signal; the first node transmits the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a time delay domain and a Doppler domain.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a multiple input multiple output (MIMO) sensing method, device and communication equipment. Background Art

[0002] In related technologies, MIMO sensing requires that the signals of each transmitting antenna port are orthogonal, and the orthogonal methods are generally time division multiplexing (TDM), frequency division multiplexing (FDM), and code division multiplexing (CDM).

[0003] However, for TDM and FDM, different transmitting antenna ports are required to occupy different time-frequency resources, which reduces the utilization rate of perception resources; for CDM, its perception performance is easily limited by the related characteristics of orthogonal sequences / orthogonal coding, and is sensitive to Doppler. Due to the above limitations, the signal orthogonality method based on TDM, FDM and CDM cannot give full play to the perception performance of MIMO. Summary of the invention

[0004] The embodiments of the present application provide a MIMO sensing method, apparatus and communication equipment, which can realize MIMO sensing based on the signal orthogonality of at least one of the delay domain and the Doppler domain, solve the problems of the MIMO sensing method based on the orthogonality of TDM, FDM and CDM, and improve the sensing performance of the MIMO sensing method.

[0005] In a first aspect, a MIMO sensing method is provided, the method comprising:

[0006] The first node acquires first information, wherein the first information is configuration information of the first signal;

[0007] The first node transmits the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

[0008] In a second aspect, a MIMO sensing device is provided, which is applied to a first node, and the device includes:

[0009] A first acquisition module, configured to acquire first information, wherein the first information is configuration information of a first signal;

[0010] The first transmitting module is used to transmit the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

[0011] In a third aspect, a MIMO sensing method is provided, the method comprising:

[0012] The second node acquires first information, wherein the first information is configuration information of the first signal;

[0013] The second node performs MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one domain of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0014] In a fourth aspect, a MIMO sensing device is provided, which is applied to a second node, and includes:

[0015] A second acquisition module, configured to acquire first information, wherein the first information is configuration information of the first signal;

[0016] The first perception module is used to perform MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0017] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0018] In a sixth aspect, a communication device is provided, including a processor and a communication interface;

[0019] Wherein, in the case where the communication device is a first node, the communication interface is used to obtain first information, wherein the first information is configuration information of a first signal; the communication interface is further used to transmit the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain;

[0020] When the communication device is a second node, the communication interface is used to obtain first information, wherein the first information is configuration information of the first signal; the communication interface is also used to perform MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0021] In a seventh aspect, a wireless communication system is provided, comprising a first node and a second node, wherein the first node is used to execute the steps of the method described in the first aspect, and the second node is used to execute the steps of the method described in the third aspect.

[0022] In an eighth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect or the third aspect are implemented.

[0023] In a ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect or the third aspect.

[0024] In the tenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect or the third aspect.

[0025] In an embodiment of the present application, the first node transmits the first signal through at least two transmitting antenna ports according to the first information for configuring the first signal, and the second node performs MIMO perception on the first signal to obtain at least one of a perception measurement value, a perception performance evaluation index measurement value and a perception result, wherein the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain, so that MIMO perception can be achieved based on a signal orthogonal method in at least one of the delay domain and the Doppler domain. The MIMO perception based on the orthogonal method in the delay domain or the Doppler domain can improve the utilization rate of signal resources used for MIMO perception compared to the MIMO perception based on the TDM and FDM orthogonal methods in the related art, and can improve the reliability of MIMO perception compared to the MIMO perception based on the CDM orthogonal method in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1is a structural diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0027] Figure 2 It is a schematic diagram of the ambiguity and overlap problem of Doppler-DM radar;

[0028] Figure 3 This is one of the flow charts of a MIMO sensing method provided in an embodiment of the present application;

[0029] Figure 4a is one of the schematic diagrams of the first signal pattern in the embodiment of the present application;

[0030] Figure 4b This is the second schematic diagram of the first signal pattern in the embodiment of the present application;

[0031] Figure 4c This is the third schematic diagram of the first signal pattern in the embodiment of the present application;

[0032] Figure 4d This is the fourth schematic diagram of the first signal pattern in the embodiment of the present application;

[0033] Figure 5 is a schematic diagram of mapping the first signal in the delay-Doppler domain in an embodiment of the present application;

[0034] Figure 6a is a schematic diagram of speed estimation ambiguity in an embodiment of the present application;

[0035] Figure 6b is a schematic diagram of resolving velocity estimation ambiguity in an embodiment of the present application;

[0036] Figure 7a is a schematic diagram of the delay spectrum of each transmitting antenna port in an embodiment of the present application;

[0037] Figure 7b is a schematic diagram of the Doppler spectrum of each transmitting antenna port in an embodiment of the present application;

[0038] Figure 8a is a schematic diagram of a delay spectrum of a first signal repeatedly transmitted by each transmitting antenna port in an embodiment of the present application;

[0039] Figure 8b is a schematic diagram of the delay spectrum of the first signal transmitted at the same time by each transmitting antenna port in an embodiment of the present application;

[0040] Figure 8c is a schematic diagram of the Doppler spectrum of the first signal repeatedly transmitted by each transmitting antenna port in an embodiment of the present application;

[0041] Figure 9a is one of the schematic diagrams of the sensing area in the embodiment of the present application;

[0042] Figure 9b This is the second schematic diagram of the sensing area in the embodiment of the present application;

[0043] Fig.10 This is the second flowchart of a MIMO sensing method provided in an embodiment of the present application;

[0044] Fig.11 This is one of the structural schematic diagrams of a MIMO sensing device provided in an embodiment of the present application;

[0045] Fig.12 This is a second structural diagram of a MIMO sensing device provided in an embodiment of the present application;

[0046] Fig.13 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0047] Fig.14 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0048] Fig.15 It is a structural diagram of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0050] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0051] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0052] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0053] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0054] The core network device may include, but is not limited to, at least one of the following: a core network node, a core network function, a mobility management entity (Mobility Management Entity, MME), an access mobility management function (Access and Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), a policy and charging rules function unit (Policy and Charging Rules Function, PCRF), an edge application service discovery function (Edge Application Server Discovery Function, EASDF), a unified data management (Unified Data Management, UDM), a unified data storage (Unified Data Repository, UDR), a home user server (Home Subscriber Server, HSS), a centralized network configuration (CNC), a network storage function (Network Repository Function, NRF), a network exposure function (Network Exposure Function, NEF), a local NEF (Local NEF, or L-NEF), and a binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is taken as an example for introduction, and the specific type of the core network device is not limited. It should be noted that in the embodiments of the present application, only the core network device in the NR system is taken as an example for introduction, and the specific type of the core network device is not limited.

[0055] Wireless communication and radar sensing (Communication & Sensing, C&S) have been developing in parallel, but with limited overlap. They have a lot in common in terms of signal processing algorithms, equipment, and to some extent, system architecture. In recent years, traditional radars are moving towards a more general wireless sensing direction. Wireless sensing can broadly refer to retrieving information from received radio signals. For wireless sensing related to the location of the sensing target, the dynamic parameters such as the reflection delay, arrival angle, departure angle, Doppler, etc. of the target signal can be estimated through common signal processing methods; for sensing the physical characteristics of the target, it can be achieved by measuring the inherent signal patterns of the device / object / activity. The two sensing methods can be called perception parameter estimation and pattern recognition, respectively. In this sense, wireless sensing refers to more general sensing technologies and applications using radio signals.

[0056] Integrated Sensing And Communication (ISAC) has the potential to integrate wireless sensing into large-scale mobile networks, referred to here as Perceptive Mobile Networks (PMNs). Perceptive Mobile Networks are able to provide both communication and wireless sensing services, and are expected to become a ubiquitous wireless sensing solution due to their large broadband coverage and powerful infrastructure. Perceptive Mobile Networks can be widely used for communication and sensing in the fields of transportation, communication, energy, precision agriculture, and security. It can also provide complementary sensing capabilities to existing sensor networks, with unique day and night operation capabilities, and the ability to penetrate fog, leaves, and even solid objects. Some common perception services are shown in Table 1 below:

[0057] Table 1

[0058]

[0059] MIMO perception requires that the signals of each transmitting antenna port are orthogonal. The orthogonal methods are generally time division multiplexing (TDM), frequency division multiplexing (FDM), and code division multiplexing (CDM). However, for TDM and FDM, different transmitting antenna ports are required to occupy different time and frequency resources, which reduces the utilization rate of perception signal resources. The perception performance of CDM is easily limited by the related characteristics of orthogonal sequences / orthogonal coding, and is also sensitive to Doppler.

[0060] In the embodiment of the present application, a MIMO sensing method based on a transform domain (including at least one of a delay domain and a Doppler domain) is designed, that is, the signal orthogonality of each transmitting antenna port of MIMO sensing is orthogonal in at least one of the delay domain and the Doppler domain, which can improve the utilization rate of sensing signal resources compared to TDM and FDM in the related art, and has a wider scope of application and is less affected by Doppler than CDM. Therefore, the MIMO sensing method provided in the embodiment of the present application can improve the sensing performance while realizing MIMO sensing based on the transform domain.

[0061] It is worth noting that the MIMO sensing method based on the transform domain in the embodiment of the present application is different from the application scenarios of Doppler Division Multiplexing (Doppler-DM) radar and Delay Division Multiplexing (Delay-DM) radar in the related art. The specific analysis is as follows:

[0062] 1. Doppler-DM radar

[0063] The basic idea of ​​Doppler-DM radar is to separate the signals sent by each transmitting antenna of the MIMO radar in the Doppler domain, that is, to perform different phase modulation on the signals of different transmitting antennas so that the signals of each transmitting antenna occupy different (non-overlapping) Doppler frequency bands on the receiver side. The radar receiver then uses a filter to separate the signals of each transmitting antenna.

[0064] Take the MIMO radar that transmits chirp signals as an example. Assume that there are N tx transmit antennas, then for transmit antenna k, the phase shift ω imposed on adjacent chirps k It is expressed as the following formula (1):

[0065]

[0066] Among them, N phase Determines the number of Doppler frequencies, which is generally related to the number of transmitting antennas, that is, N phase =N tx The disadvantage of the Doppler Division Multiple Access (DDMA) waveform is that the maximum unambiguous speed range of the radar (that is, the maximum unambiguous Doppler range) is reduced due to the artificial addition of frequency deviation to each transmission channel. The phase shift difference between the chirps of two adjacent transmitting antennas is Δω = 2π / N txFor the same target, the echo doppler frequency difference generated by the signals of two adjacent transmitting antennas is expressed as the following formula (2):

[0067]

[0068] Among them, T c is the radar chirp signal period. For the same target, the speed difference detected in the echo generated by two adjacent transmitting antenna signals is expressed as the following formula (3):

[0069]

[0070] Among them, v max =λ / (4T c ) is the maximum unambiguous speed. In order not to confuse the data of different transmitting antennas, the maximum speed of the target cannot exceed Δv DDMA , that is to say, the maximum unambiguous speed range (or maximum unambiguous doppler range) of the radar becomes 1 / N of the original tx .

[0071] 2. Delay-DM radar

[0072] For an orthogonal frequency division multiplex (OFDM) multi-carrier system, the signal delay can be "virtually" adjusted within one symbol by adding a linear phase offset between subcarriers in the frequency domain. The receiver can distinguish the signals of each transmitting antenna by the different signal delays. Assume that the relative delay offset (offset index in the delay domain) between the ξth transmitting antenna and the kth transmitting antenna is -N c / 2≤s (kξ) ≤N c / 2, then the delay corresponding to the two transmitting antenna signals is s (kξ) δ t ∈[-T / 2,T / 2] where δ t =T / N c is the delay resolution of the OFDM system, where T is the OFDM symbol length, N c is the number of symbol sampling points (i.e., the number of subcarriers in the frequency domain). (Equivalently, considering that the delay is non-negative and the Discrete Fourier Transform (DFT) is periodic, it is generally assumed that 0≤s (kξ) ≤N c -1, then the delay corresponding to the two transmitting antenna signals is s (kξ) δ t ∈[0,T]. )

[0073] Assume that all transmitting antennas send the same signal (the time-frequency resources are the same, and the original sequence used is also the same), and the signal of the kth transmitting antenna is Then the signal of the ξth transmitting antenna is expressed as the following formula (4):

[0074]

[0075] Among them, m represents the symbol index (index), according to the Fourier transform The following formula (5) can be obtained:

[0076]

[0077] Wherein, n represents the subcarrier index; Respectively represent the mth symbol of the ξth and kth transmitting antennas in the time domain, and the symbol mapped on the nth subcarrier in the frequency domain. In other words, Delay-DM radar introduces phase difference between different subcarriers in the frequency domain, so that the receiver can separate the signals of different transmitting antennas in the delay domain. In some studies, the above MIMO radar is also called Range Division Multiplexing (RDM) radar.

[0078] 3. Blurred and overlapping issues

[0079] Based on the above analysis, the maximum unambiguous speed range of Doppler-DM radar becomes 1 / N of the original tx , and the maximum unambiguous distance interval of the Delay-DM radar becomes 1 / N of the original tx When the actual moving speed / distance of the perceived target exceeds the above maximum unambiguous range, the Doppler / delay power spectrum on the receiver side will be aliased, which is the so-called ambiguity problem.

[0080] When there is more than one sensing target in the environment, overlapping problems may also occur. Figure 2 As shown in the figure, it is assumed that there are three sensing targets (sensing target 1, sensing target 2 and sensing target 3), and their speeds are 0m / s, -v max / 3, -v max . The three transmitting antennas: TX0, TX1, and TX2 perform phase modulation on the transmitted signal, so that the transmitted signal will have 0, -2v along the velocity dimension on the range velocity spectrum obtained on the receiver side. max / 3,2v max / 3 translation, that is, the original maximum unambiguous range [-v max ,v max ] is divided into [-v max ,-v max / 3], [-vmax / 3,v max / 3]、[v max / 3,v max ] three areas. Among them, for the perceived target 1, since its speed is 0m / s, the receiver side is at 0,-2v max / 3,2v max / 3 position, we can see 3 peaks (such as Figure 2 Mark 1_TX 0 ,1_TX 1 _TX 2 , corresponding to the signals emitted by TX0, TX1, and TX2 respectively; for the perceived target 2, its speed is -v max / 3, the velocity spectrum peak positions of the reflected signals of TX0, TX1, and TX2 should be -v max / 3,-v max ,v max / 3; for sensing target 3, the velocity spectrum peak positions of the reflected signals of TX0, TX1, and TX2 should be -v max ,v max / 3,-v max / 3, where the actual velocity spectrum peak position of the reflected signal of TX1 should be -5v max / 3, however, due to velocity blurring, the spectrum peak flips to -5v max / 3+2v max =v max / 3. Through the above analysis, it can be found that the perception target 2 and the perception target 3 overlap in the velocity spectrum; if the two perception targets happen to have the same or similar distance, the two targets cannot be separated in the distance velocity spectrum, and the receiver will think that only one perception target is detected. In addition, the overlap problem will also cause errors in the subsequent perception target angle estimation.

[0081] In the MIMO perception method provided by the present application, the first signal sent by each transmitting antenna port of the first node is configured in accordance with a given design criterion in at least one of the delay domain and the Doppler domain, so that the ISAC system can realize MIMO perception through the method provided by the present application, and simultaneously complete deambiguation or de-overlapping. In other words, the embodiment of the present application provides how to determine and configure the first signal that can realize MIMO perception and deambiguation or de-overlapping.

[0082] In order to facilitate the description of the MIMO sensing method provided in the embodiment of the present application, the following nouns or terms in the embodiment of the present application are first explained:

[0083] 1) First signal;

[0084] In a mobile communication network, a base station (including one or more transmission reception points (TRP) on the base station) and a user equipment (UE) (including one or more antenna subarrays / panels on the UE) can be used as a perception node participating in the perception / synesthesia integration service. By sending and receiving perception signals by the perception nodes, perception of a certain area or a certain physical target can be achieved. Among them, the perception signal can be a signal that does not contain transmission information, such as the existing LTE / NR synchronization and reference signals (including: synchronization signal and physical broadcast channel (Synchronization Signal and PBCH block, SSB) signal, channel state information (Channel State Information, CSI) reference signal (CSI Reference Signal, CSI-RS), demodulation reference signal (Demodulation Reference Signal, DMRS), channel sounding reference signal (Sounding Reference Signal, SRS), positioning reference signal (Positioning Reference Signal, PRS), phase tracking reference signal (Phase-Tracking Reference Signal, PTRS), etc.), of course, the perception signal can also be a single-frequency continuous wave (Continuous Wave) commonly used by radar. Wave, CW), frequency modulated continuous wave (Frequency Modulated CW, FMCW), and ultra-wideband Gaussian pulse, etc. In addition, the perception signal can also be a newly designed dedicated perception signal with good correlation characteristics and low peak-to-average power ratio (Peak-to-Average Power Ratio, PAPR), or a newly designed synaesthesia integrated signal, which not only carries certain information but also has good perception performance. For example, the new signal is composed of at least one dedicated perception signal / reference signal and at least one communication signal spliced / combined / superimposed in the time domain and / or frequency domain. The type of perception signal is not specifically limited here, and for the sake of convenience of explanation, the above signals are uniformly referred to as first signals in the following embodiments.

[0085] 2) The first node, ie, the node that sends the first signal.

[0086] 3) A second node, ie, a node that receives the first signal.

[0087] In some implementations, the first node may be a base station (including a TRP) or a UE, and the second node may be a base station (including a TRP) or a UE different from the first node. For ease of explanation, the embodiments of the present application are generally illustrated by taking the first node as a base station and the second node as a UE as an example, which does not constitute a specific limitation herein.

[0088] 4) First device. In some implementations, at least one of the first node and the second node needs to interact with a core network device, and the core network device may include at least one of the following: a sensing function network element (Sensing Function, SF), an access and mobility management function (Access and Mobility Management Function, AMF), and a sensing application server in the core network. For ease of explanation, in an embodiment of the present application, the core network device that interacts with at least one of the first node and the second node is referred to as the first device.

[0089] 5) Defuzzification, which refers to the process of defuzzifying the estimation result of at least one of the perceived target speed and distance to obtain a perception result without ambiguity or overlap.

[0090] It is worth mentioning that, in some embodiments, when there are at least two perception targets, at least one of the speeds and distances of at least two perception targets determined based on the first signals transmitted by different transmitting antenna ports may overlap. At this time, through the above deambiguation process, de-overlapping of overlapping perception results can be achieved, that is, in the embodiment of the present application, de-overlapping is a special case of de-ambiguation.

[0091] 6) Resource set, where the resource set is a time-frequency resource set consisting of at least one resource element (RE).

[0092] It should be noted that there are multiple options for dividing resource sets.

[0093] For example: For Figure 4a The time-frequency pattern of the first signal shown in the figure has the following divisions of resource sets:

[0094] i) All REs on one OFDM symbol (i.e. Figure 4a The RE with filled color in the middle is a resource set;

[0095] ii) All REs in one time slot are one resource set.

[0096] For Figure 4b The time-frequency pattern of the first signal shown in the figure has the following divisions of resource sets:

[0097] i) All REs in half a time slot are one resource set, that is, all REs in OFDM symbols 0 to 6 are one resource set, and all REs in OFDM symbols 7 to 13 are another resource set;

[0098] ii) All REs in a time slot (i.e. Figure 4b The RE with filled color in the middle is a resource set;

[0099] For Figure 4c The time-frequency pattern of the first signal shown in the figure has the following divisions of resource sets:

[0100] i) All REs on each OFDM (i.e. Figure 4c The RE with filled color in the middle is a resource set;

[0101] ii) All REs in half a time slot are one resource set;

[0102] iii) All REs in one time slot are one resource set.

[0103] The MIMO sensing method, MIMO sensing device and communication equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

[0104] See also Figure 3 , a MIMO sensing method provided in an embodiment of the present application, the execution subject of which can be a first node, is not specifically limited here.

[0105] like Figure 3 As shown, a MIMO sensing method provided in an embodiment of the present application includes the following steps:

[0106] Step 301: A first node obtains first information, where the first information is configuration information of a first signal.

[0107] In some implementations, the first node may determine the first information based on information acquired in advance, for example, based on capability information of the second node acquired in advance, MIMO perception requirement information or prior information, etc., to determine the first information.

[0108] It is worth mentioning that, in some implementations, the capability information of the second node may determine information such as the resolution of the first signal in the transform domain by the second node, and the first node needs to know this information to perform reasonable transform domain MIMO perception configuration.

[0109] In some other implementations, the first node may receive the first information from other nodes or devices, for example, the first node receives the first information from the first device.

[0110] Step 302: The first node transmits the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

[0111] In some implementations, the first information is configuration information of the first signal, which may be the first information used for MIMO awareness configuration of the first node and the second node. For example, the first node and the second node may determine the configured first signal according to the first information. Figure 5 shown.

[0112] It should be noted that the first signal is orthogonal in at least one of the delay domain and the Doppler domain, which means that the first signal does not overlap in at least one of the delay domain and the Doppler domain.

[0113] In some implementations, the first service may be a perception service or a synaesthesia integration service.

[0114] As an optional implementation, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0115] Similar to Doppler-DM radar and Delay-DM radar, when the first node passes N tx When the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain, the maximum unambiguous speed interval of the first signal becomes 1 / N of the maximum unambiguous speed interval of the signal transmitted by the single transmitting antenna port tx , or, the maximum unambiguous distance interval of the first signal becomes 1 / N of the maximum unambiguous distance interval of the signal transmitted by the single transmitting antenna port tx , or, the maximum unambiguous speed distance interval of the first signal becomes 1 / N of the maximum unambiguous speed distance interval of the signal transmitted by the single transmitting antenna port tx When the actual moving speed / distance of the perceived target exceeds the above-mentioned maximum unambiguous range, the Doppler / delay power spectrum of the first signal received by the second node will be aliased, resulting in the so-called ambiguity problem.

[0116] In this embodiment, when the first node and the second node are based on the first information, the first signal sent by at least two transmitting antenna ports is configured in accordance with a given design criterion in at least one of the delay domain and the Doppler domain, so that the MIMO perception system can achieve MIMO perception through the method described in the present application, and complete deambiguation or de-overlapping at the same time.

[0117] Optionally, the first information includes at least one of the following:

[0118] 1) first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0119] The first sequence may be a sending sequence used by the first node to transmit the first signal when executing the MIMO sensing process.

[0120] In some implementations, the first sequence may be at least one of the following sequences: m sequence, Gold sequence, ZC (Zadoff-Chu) sequence, Chirp sequence, Zero Correlation Zone (ZCZ) sequence, and other commonly used pseudo-random sequences, etc., which are not specifically limited herein. Optionally, the first sequence parameter information includes at least one of the following: shift register initial value, primitive polynomial, sequence truncation position, sequence root number, cyclic shift value, Chirp sequence bandwidth time width ratio, ZCZ sequence zero correlation zone length, and sequence length.

[0121] For example, after the first sequence undergoes the first operation or the second operation, the time-frequency resource mapped to the first signal is as follows: Figures 4a to 4d shown.

[0122] Optionally, the first signal may be separated from the data signal in the time-frequency domain. In this case, the time-frequency resources of the first signal may be evenly distributed at equal intervals in the time domain and the frequency domain, or may be unequally spaced or unevenly distributed. Figure 4a As shown, the time-frequency resources of the first signal are evenly distributed in the time domain and the frequency domain at equal intervals; Figure 4b As shown, the time-frequency resources of the first signal are non-uniformly distributed in the time domain and the frequency domain according to the Costas array; Figure 4c As shown, the time-frequency domain of the time-frequency resource of the first signal is non-uniformly mapped at the communication reference signal position with non-equal intervals.

[0123] Alternatively, if Figure 4d As shown, the first signal may overlap with the data signal in the time-frequency domain.

[0124] In some implementations, the first sequence may also be a sequence whose elements are arbitrary fixed values, such as a sequence of all "1". Optionally, the first sequence parameter information includes at least one of the following: sequence element amplitude, sequence element phase, and sequence length.

[0125] In some implementations, the first sequences used by different transmit antenna ports of the first node may be different.

[0126] In some other embodiments, within the same resource set, different transmit antenna ports of the first node may use the same first sequence, and a phase rotation operation may be performed to separate first signals transmitted by different transmit antenna ports.

[0127] 2) a first phase rotation factor, wherein the first phase rotation factor is the ratio of the first difference to the first interval, wherein the first difference is the difference in phase values ​​rotated by sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is the frequency domain interval between any two different resource sets on the frequency domain; the frequency domain interval may be calculated by taking the frequency difference between the lowest frequency or the highest frequency of any two different resource sets, or taking the frequency difference between the center frequencies of the frequency ranges occupied by each of the two different resource sets.

[0128] In some implementations, the first node may perform a first operation on first sequence elements mapped to the first signal on at least two resource sets in the frequency domain. The first operation is a phase rotation operation, and the first operation defines a ratio of a difference in phase values ​​of sequence elements (i.e., elements in the first sequence) rotated on any two different resource sets in the frequency domain to a frequency domain interval between the two resource sets as a preset value, and the ratio is defined as a first phase rotation factor.

[0129] The resource set is a time-frequency resource set consisting of at least one resource element (RE).

[0130] In some embodiments, the first information may include a first phase rotation factor of at least one transmitting antenna port of the first node. For example, assuming that the first node transmits a first signal through two transmitting antenna ports, where the first phase rotation factor of one transmitting antenna port is equal to 0, that is, the first node does not perform phase rotation on the transmitting antenna port, and the first phase rotation factor of the other transmitting antenna port is not equal to 0, that is, the first node performs phase rotation on the transmitting antenna port. At this time, the first information may include a first phase rotation factor that is not equal to 0.

[0131] It is worth mentioning that, when the first operation is performed, the first signal has at least two resource sets in the frequency domain.

[0132] In some embodiments, when the first signal includes at least 2 resource sets in the time domain, and the frequency domain at the same time domain position includes at least 2 resource sets, the first phase rotation factors corresponding to the resource sets at different time domain positions may be different.

[0133] In some embodiments, the first operation may be equivalent to a precoding operation, that is, the first operation may be implemented by precoding the first signal in the frequency domain. In specific implementation, the first sequence element mapped in the frequency domain is multiplied by at least one row or column of a precoding vector or a precoding matrix to achieve the same effect as the first operation; or, when the first signal contains at least two resource sets in the time domain, and the frequency domain at the same time domain position contains at least two resource sets, the first sequence element mapped on the resource set is multiplied by the precoding matrix to achieve the same effect as the first operation. Therefore, it should be understood that precoding operations that are equivalent to the first operation are also within the protection scope of the present application.

[0134] Optionally, for the first signals mapped on all time-frequency resources in the same resource set, the phase rotation value of the first operation is the same. Equivalently, for the first signals mapped on all time-frequency resources in the same resource set, the same precoding is used.

[0135] 3) a first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0136] Among them, the first phase difference is similar to the above-mentioned first phase rotation factor, except that: when the first node can perform the first operation on the first sequence elements mapped on a resource set in the frequency domain, if at least two resource sets mapped by the first sequence are evenly distributed at equal intervals in the frequency domain, then the difference in the phase value of the overall rotation of the sequence elements of the two adjacent resource sets in the frequency domain is defined as the first phase difference. For other explanations, please refer to the relevant explanation of the above-mentioned first phase rotation factor, which will not be repeated here.

[0137] The phase value of the sequence elements of two adjacent resource sets in the frequency domain rotated as a whole can be understood as the phase value of all sequence elements in the same resource set rotated uniformly after the first operation.

[0138] 4) a second phase rotation factor, wherein the second phase rotation factor is the ratio of the second difference to the second interval, wherein the second difference is the difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is the time domain interval between any two different resource sets in the time domain; the time domain interval may be calculated by taking the time difference between the start time or the end time of any two different resource sets, or taking the time difference between the center moments of the time ranges occupied by each of the two different resource sets.

[0139] In some implementations, the first node may perform a second operation on the first sequence elements mapped to the first signal on at least two resource sets in the time domain. The second operation is a phase rotation operation, and the phase rotation operation makes the ratio of the difference in phase values ​​of the sequence elements on any two different resource sets in the time domain rotated as a whole to the time domain interval of the two different resource sets be a preset value, and the ratio is defined as a second phase rotation factor.

[0140] It is worth mentioning that, when the second operation is performed, the first signal has at least two resource sets in the time domain.

[0141] In some embodiments, the second operation may be equivalent to a precoding operation, that is, the second operation may be implemented by precoding the first signal in the time domain. In specific implementation, the first sequence element mapped in the time domain is multiplied by at least one row or column of the precoding vector or precoding matrix to achieve the same effect as the second operation; or, when the first signal contains at least 2 resource sets in the frequency domain, and the time domain at the same frequency domain position contains at least 2 resource sets, the first sequence element mapped on the resource set is multiplied by the precoding matrix to achieve the same effect as the second operation. Therefore, it should be understood that precoding operations that are equivalent to the second operation are also within the scope of protection of this application.

[0142] Optionally, for the first signals mapped on all time-frequency resources in the same resource set, the phase rotation value of the second operation is the same. Equivalently, for the first signals mapped on all time-frequency resources in the same resource set, the same precoding is used.

[0143] 5) a second phase difference, where the second phase difference is a difference in phase values ​​of the sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0144] Among them, the second phase difference is similar to the above-mentioned second phase rotation factor, except that: when the first node performs the second operation on the first sequence elements mapped on a resource set in the time domain that are greater than the first signal, if at least two resource sets mapped by the first sequence are evenly distributed at equal intervals in the time domain, the difference in the phase value of the sequence elements of two adjacent different resource sets in the time domain rotated as a whole is defined as the second phase difference. For other explanations, please refer to the relevant explanation of the above-mentioned second phase rotation factor, which will not be repeated here.

[0145] 6) resource set indication information, used to indicate resource set division status of at least one transmit antenna port of the first node;

[0146] In some implementations, all time-frequency resources within a resource set use the same first phase rotation factor and / or first phase difference.

[0147] In some implementations, all time-frequency resources within a resource set use the same second phase rotation factor and / or second phase difference.

[0148] In some embodiments, the indication information of the resource set may specifically include at least one of the following information: a resource set index, a mapping relationship between the resource set index and the first configuration information, a frequency domain range indication information of the resource set (for example, the frequency domain starting position and ending position of the resource set), a resource combined with a time domain range indication information (for example, the time domain starting position and ending position of the resource set), a resource frequency domain density, and a resource time domain density.

[0149] Among them, the first configuration information can be called perception parameter configuration information, which is used to configure other parameters of the first signal except the first information, such as transmission power, emission angle, etc.

[0150] 7) first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0151] Based on the first association information, it may be determined which transmit antenna port of the first node each of the first phase rotation factors or the first phase difference is used for the first operation.

[0152] Optionally, the first phase rotation factors or first phase differences of different transmit antenna ports may be different.

[0153] 8) second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0154] Based on the second association information, it may be determined which transmit antenna port of the first node each of the second phase rotation factors or the second phase difference is used for the second operation.

[0155] Optionally, the second phase rotation factors or second phase differences of different transmit antenna ports may be different.

[0156] 9) third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0157] Based on the third association information, first signals with different configuration information may be associated with respective first phase rotation factors or the first phase differences. For example, different first signals are associated with different first phase rotation factors or the first phase differences.

[0158] Optionally, the first configuration information includes at least one of the following:

[0159] a) Waveform type, such as OFDM, Single-carrier Frequency Division Multiple Access (SC-FDMA), Orthogonal Time Frequency and Space (OTFS), FMCW, pulse signal, etc.;

[0160] b) Subcarrier spacing, for example, the subcarrier spacing of the OFDM system is 30kHz;

[0161] c) Guard interval: the time interval from the moment a signal ends to the moment the latest echo signal of the signal is received; this parameter is proportional to the maximum sensing distance; for example, it can be expressed as 2d max / c calculated, d max is the maximum sensing distance (belongs to the sensing requirement), for example, for the self-transmitted and self-received sensing signal / reference signal, d max Represents the maximum distance from the signal receiving point to the signal transmitting point; in some cases, the OFDM signal cyclic prefix CP can play the role of the minimum guard interval;

[0162] d) Bandwidth, which is inversely proportional to the range resolution and can be obtained by c / (2Δd), where Δd is the range resolution (perception requirement) and c is the speed of light;

[0163] e) Data burst duration: This parameter is inversely proportional to the rate resolution (a perception requirement). This parameter is the time span of the signal, mainly for calculating the Doppler frequency deviation. This parameter can be calculated by c / (2f c Δv) is calculated; where Δv is the velocity resolution; f c is the carrier frequency of the signal;

[0164] f) Time domain interval: This parameter can be expressed by c / (2f c v range ) is calculated; where v range It is the maximum rate minus the minimum speed (which belongs to the perception requirement); this parameter is the time interval between two adjacent signals;

[0165] g) Transmit signal power, for example, a value of 2dBm from -20dBm to 23dBm;

[0166] h) Signal format, such as Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), Positioning Reference Signal (PRS), or other predefined signals, as well as related sequence format information;

[0167] i) Signal direction; for example, the direction of the sensing signal / reference signal or beam information;

[0168] j) Time resources, such as the time slot index or symbol index of the time slot where the perception signal / reference signal is located; wherein time resources are divided into two types: one is a one-time time resource, such as one symbol sending an omnidirectional signal; the other is a non-one-time time resource, such as multiple groups of periodic time resources or discontinuous time resources (which may include a start time and an end time), each group of periodic time resources sends a signal in the same direction, and different groups of periodic time resources have different beam directions;

[0169] k) Frequency resources, including the center frequency of the signal, bandwidth, RB or subcarrier, Point A, starting bandwidth position, etc.;

[0170] l) Quasi co-location (QCL) relationship, for example, the signal includes multiple resources, each resource is associated with a synchronization signal / physical broadcast channel signal block (or synchronization signal block) (Synchronization Signal and PBCHblock, SSB) QCL, QCL includes Type A, Type B, Type C or Type D;

[0171] m) antenna configuration information of at least one of the first node and the second node, the antenna configuration information comprising at least one of the following:

[0172] i) an antenna element ID or an antenna port ID used to send and / or receive the first signal;

[0173] ii) a panel ID+element ID used to send and / or receive a first signal;

[0174] iii) position information of an antenna array element for sending and / or receiving the first signal relative to a local reference point on the antenna array (which can be expressed in Cartesian coordinates (x, y, z) or spherical coordinates) express);

[0175] iv) position information of a panel for sending and / or receiving the first signal relative to a local reference point on the antenna array (which can be expressed in Cartesian coordinates (x, y, z) or spherical coordinates) denoted by ), and position information (which can be expressed as Cartesian coordinates (x, y, z) or spherical coordinates) of the antenna array elements in the selected panels for sending the first signal relative to a certain unified reference point of the panel (such as the center point of the panel) express);

[0176] v) bitmap information of antenna array elements, for example, the bitmap uses "1" to indicate that the array element is selected for sending and / or receiving the first signal, and uses "0" to indicate that the array element is not selected (or vice versa);

[0177] vi) Bitmap information of the array antenna panel, for example: the bitmap uses "1" to indicate that the panel is selected for sending and / or receiving the first signal, and uses "0" to indicate that the array element is not selected (or vice versa). And the bitmap information of the array elements in these selected panels;

[0178] vii) Antenna array element amplitude, phase and gain information, that is, antenna array element pattern information.

[0179] 10) fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0180] Based on the fourth association information, first signals with different configuration information may be associated with respective second phase rotation factors or the second phase differences, for example, different first signals are associated with different second phase rotation factors or the second phase differences.

[0181] 11) first indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference;

[0182] The first indication information may be used to indicate information of a precoding matrix or a precoding vector that achieves an equivalent effect to the first operation and / or the second operation.

[0183] For example, the first indication information includes at least one of the following:

[0184] at least one row or one column of the precoding matrix, or the precoding vector;

[0185] An index of the precoding matrix or the precoding vector, which corresponds to a set of precoding matrices or precoding vectors predefined on the network side, each predefined precoding matrix or precoding vector having a unique index;

[0186] The type indication of the precoding matrix or the precoding vector is used to indicate that the precoding matrix or the precoding vector acts on at least one of the frequency domain, the time domain, and the time-frequency domain.

[0187] In some implementations, the first signals transmitted by different transmitting antenna ports may be distributed at unequal intervals in the transform domain, thereby identifying the intervals of the received first signals in the transform domain to determine the first signals transmitted by each transmitting antenna port.

[0188] Optionally, the first information further includes at least one of the following:

[0189] 12) a first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0190] The first guard interval in the delay domain may be the minimum guard interval g′ of the first signal in the delay domain between any or specified two transmitting antenna ports of the first node. delay For example, assuming that the positions of the first signal between the two arbitrary or specified transmitting antenna ports in the delay domain are τ i , τ j , then τ i , τ j Satisfy |τ i -τ j |≥g′ delay .

[0191] 13) a first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0192] The first Doppler domain protection interval may be the minimum protection interval g′ of the first signal in the Doppler domain between any or specified two transmitting antenna ports of the first node. doppler For example, assuming that the positions of the first signal between the two arbitrary or specified transmitting antenna ports in the Doppler domain are f i 、f j , then f i 、f j Satisfy | i -f j |≥g′ doppler .

[0193] 14) a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0194] The first guard interval in the delay-Doppler domain can be the minimum guard interval g′ of the first signal in the delay-Doppler domain between any or specified two transmitting antenna ports of a node. delay-doppler For example, assuming that the positions of the first signal between the two arbitrary or specified transmitting antenna ports in the delay-Doppler domain are (τ i ,f i ), (τ j ,f j ), then (τ i ,f i ), (τ j ,f j )satisfy

[0195] 15) a first protection interval of a delay domain tap index, wherein the first protection interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0196] The first guard interval of the delay domain tap index may be the minimum difference Δi of the index of the DFT signal tap of the first signal in the delay domain between any or specified two transmitting antenna ports of the first node. d ' elay For example, assuming that the signal tap indexes of the first signal between the two arbitrary or specified transmitting antenna ports in the delay domain are i p 、i q , where 0≤i p ,i q ≤N c -1, then i p 、i q Satisfy|i p -i q |≥Δi d ' elay , where N c is the total number of signal tap indices of the first signal in the delay domain.

[0197] 16) a first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0198] The first guard interval of the Doppler domain tap index may be the minimum difference Δj of the index of the DFT signal tap of the first signal in the Doppler domain between any or specified two transmitting antenna ports of the first node. d ' oppler For example, assuming that the signal tap indices of the first signal in the Doppler domain between the two arbitrary or specified transmitting antenna ports are j p 、j q , where 0≤j p ,j q ≤M sym -1, then j p 、j q Satisfaction|j p -j q |≥Δj d ' oppler , where M sym is the total number of signal tap indices of the first signal in the Doppler domain.

[0199] 17) a first protection interval of a delay-Doppler domain tap index, wherein the first protection interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0200] The first guard interval of the delay-Doppler domain tap index may be the minimum difference Δk of the index of the DFT signal tap of the first signal in the delay-Doppler domain between any or specified two transmitting antenna ports of the first node. d ' elay-doppler For example, assuming that the signal tap indices of the first signal between the two arbitrary or specified transmitting antenna ports in the delay-Doppler domain are (i p ,j p )、(i q ,j q ),in Then (i p ,j p )、(i q ,j q )satisfy

[0201] 18) fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0202] In some implementations, the fifth association information may indicate which two transmit antenna ports of the first node transmit the first signal whose delay domain guard interval is the delay domain guard interval.

[0203] In some other implementations, two transmit antenna ports of the first node corresponding to the first guard interval in the delay domain may be agreed upon in the protocol.

[0204] In some implementations, the intervals of the first signals transmitted by the transmitting antenna ports of the first node in the delay domain are different from each other.

[0205] 19) sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0206] In some implementations, the sixth association information may indicate which two transmit antenna ports of the first node transmit the Doppler domain guard interval of the first signal.

[0207] In some other implementations, two transmit antenna ports of the first node corresponding to the first protection interval in the Doppler domain may be agreed upon in the protocol.

[0208] In some implementations, the intervals of the first signals transmitted by the transmitting antenna ports of the first node in the Doppler domain are different from each other.

[0209] 20) seventh association information, used to indicate the association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0210] In some implementations, the seventh association information may indicate which two transmit antenna ports of the first node transmit the delay-Doppler domain guard interval of the first signal.

[0211] In some other implementations, two transmitting antenna ports of the first node corresponding to the first guard interval in the delay-Doppler domain may be agreed upon in the protocol.

[0212] In some implementations, the intervals of the first signals transmitted by the transmitting antenna ports of the first node in the delay-Doppler domain are different from each other.

[0213] 21) eighth association information, used to indicate the association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0214] Among them, the function of the eighth association information is similar to that of the above-mentioned fifth association information, the difference is that: the eighth association information indicates the association relationship between the first protection interval of the delay domain tap index and the transmitting antenna port index of the first node, and the fifth association information indicates the association relationship between the first protection interval of the delay domain and the transmitting antenna port index of the first node, which will not be repeated here.

[0215] 22) ninth association information, used to indicate the association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0216] Among them, the function of the ninth association information is similar to that of the sixth association information mentioned above, the difference is that the ninth association information indicates the association relationship between the first protection interval of the Doppler domain tap index and the transmitting antenna port index of the first node, and the sixth association information indicates the association relationship between the first protection interval of the Doppler domain and the transmitting antenna port index of the first node, which will not be repeated here.

[0217] 23) tenth association information, used to indicate the association relationship between the first guard interval of the delay-Doppler domain tap index and the transmit antenna port index of the first node;

[0218] Among them, the function of the tenth association information is similar to that of the above-mentioned seventh association information, the difference is that: the tenth association information indicates the association relationship between the first protection interval of the delay Doppler domain tap index and the transmitting antenna port index of the first node, and the seventh association information indicates the association relationship between the first protection interval of the delay Doppler domain and the transmitting antenna port index of the first node, which will not be repeated here.

[0219] Optionally, the first information further includes at least one of the following:

[0220] 24) second indication information, used to indicate information related to delay domain deambiguation;

[0221] Optionally, the second indication information includes at least one of the following:

[0222] Delay domain deambiguation method type information, used to inform the second node of the deambiguation method to be used for the first signal configuration in the transform domain, for example: deambiguation based on a phase rotation parameter in the time domain or frequency domain, or deambiguation based on a first guard interval in the transform domain, or deambiguation based on a repeatedly transmitted first signal;

[0223] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0224] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and at least one delay domain detection interval position. The delay domain detection interval position may include the delay start position of the detection interval and the delay end position of the detection interval.

[0225] In some implementations, the first threshold information may be used to determine a peak position of the first signal on a delay spectrum.

[0226] 25) third indication information, used to indicate information related to Doppler domain deambiguation;

[0227] Optionally, the third indication information includes at least one of the following:

[0228] Doppler domain deambiguation method type information, used to inform the second node of the deambiguation method to be used for the first signal configuration in the transform domain, for example: deambiguation based on a phase rotation parameter in the time domain or frequency domain, or deambiguation based on a first guard interval in the transform domain, or deambiguation based on a repeatedly transmitted first signal;

[0229] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0230] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and at least one Doppler domain detection interval position. The Doppler domain detection interval position may include the Doppler start position of the detection interval and the Doppler end position of the detection interval.

[0231] In some implementations, the second threshold information may be used to determine a peak position of the first signal on the Doppler spectrum.

[0232] 26) fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0233] Optionally, the fourth indication information includes at least one of the following:

[0234] Information on the type of delay-Doppler domain deambiguation method;

[0235] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0236] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0237] Among them, the detection interval size may include the size of the detection interval in the delay domain and the size of the detection interval in the Doppler domain; the Doppler domain detection interval position may include the delay starting position of the detection interval, the delay ending position of the detection interval, the Doppler frequency starting position of the detection interval, and the Doppler frequency ending position of the detection interval; the detection interval shape indication may indicate that the shape of the detection interval is a two-dimensional shape such as a square, rectangle, circle, or ellipse.

[0238] In some implementations, the third threshold information may be used to determine the peak position of the first signal in the delay spectrum and Doppler spectrum domains.

[0239] 27) The number of times the resource collection is sent repeatedly.

[0240] In some implementations, the resource set of the first signal may be repeatedly transmitted in at least one of the time domain and the frequency domain, for example: Figure 4a As an example, assume that Figure 4a In the example, all the first signal mapping REs in a time slot are configured as a resource set. Assume that a total of M 1 ≥1 resource set, a total of M are configured in the time domain 2 ≥1 resource set. 1 ,M 2 The above multiple resource sets are repeatedly sent in the time domain for N s >1 times, so the second node receives M 1 ×M 2 A resource set can obtain a delay-Doppler spectrum based on a total of N s >1 delay-Doppler spectrum, which can achieve deambiguation or de-overlapping.

[0241] In some implementations, the resource set corresponding to the first signal is repeatedly sent at least twice in the time domain, and a phase rotation parameter used by the resource set repeatedly sent for the i-th time is different from a phase rotation parameter used by the resource set repeatedly sent for the j-th time;

[0242] Wherein, i is not equal to j, and the phase rotation parameter includes at least one of the following:

[0243] a first phase rotation factor or a first phase difference;

[0244] A second phase rotation factor or a second phase difference.

[0245] In some implementations, the delay domain and the Doppler domain may be deambiguated or de-overlapped respectively, that is, by using N s,1>1 resource set, complete the delay domain deambiguation or de-overlapping; through N s,2 >1 resource set to complete Doppler domain deambiguation or de-overlapping, and there is no requirement for the order of the two processes.

[0246] In one embodiment, when M 2 =1, the second node receives M 1 ≥1 resource set can obtain 1 delay profile, based on a total of N s >1 time delay spectrum to complete the deambiguation or de-overlapping.

[0247] In one embodiment, when M 1 =1, the second node receives M 2 >1 resource set can obtain 1 Doppler spectrum, based on a total of N s >1 Doppler spectrum is used to complete the deambiguation or de-overlapping.

[0248] As an optional implementation manner, the first node acquiring the first information includes:

[0249] The first node receives first information from a first device, wherein the first device includes a core network element for a first service, and the first service is a service corresponding to MIMO perception; or,

[0250] The first node acquires at least one of second information and third information, wherein the second information indicates information related to a sensing capability of a second node for receiving the first signal; and the third information indicates information related to the first service;

[0251] The first node determines the first information according to at least one of the second information and the third information.

[0252] In this implementation, at least one of the first node and the first device obtains the second information and the third information, and then determines the first information based on the second information and the third information. After the first information is determined, the first information needs to be known by the first node and the second node.

[0253] Optionally, taking the example that the first node determines the first information according to the second information and the third information, the transmission path of the second information may include at least one of the following:

[0254] Sent by the second node to the first node;

[0255] Sent by the second node to the first device, and sent by the first device to the first node;

[0256] Sent by the first device to the first node.

[0257] Optionally, the transmission of the first information may be at least one of the following situations:

[0258] Sent by the first node to the second node;

[0259] Sent by the first node to the first device, and sent by the first device to the second node;

[0260] sent by the first device to the second node;

[0261] Sent by the first device to the first node, and then by the first node to the second node.

[0262] In some embodiments, when the first node determines the first information, the first node may send the first information to the second node directly or indirectly. When the first device determines the first information, the first information may be sent directly to the first node and the second node, or the first information may be sent to the first node and forwarded by the first node to the second node; or the first information may be sent to the second node and forwarded by the second node to the first node.

[0263] In some embodiments, the second information includes at least one of the following:

[0264] 1) fifth indication information, where the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level (NFL) in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0265] 2) first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0266] Optionally, the bandwidth resources may include the number of physical resource blocks (PRBs), the number of subcarriers, the number of frequency domain resource elements (REs), and the number of partial bandwidths (Bandwidth Parts, BWPs).

[0267] Optionally, the time resources may include: the number of OFDM frames, the number of OFDM time slots, the number of OFDM symbols, and the number of time domain resource units.

[0268] Optionally, antenna resources may include: the number of antenna ports (including the number of antenna ports in the horizontal and vertical directions, and the total number of antenna ports), the number of physical antennas (including the number of physical antennas in the horizontal and vertical directions, and the total number of physical antennas), and the antenna port index (including the physical antenna index).

[0269] 3) hardware information of the second node, the hardware information including at least one of antenna port information and physical antenna information;

[0270] Optionally, the antenna port information may include: position coordinates of an equivalent phase center of the antenna port relative to a predetermined reference point on the antenna array, an antenna port array, and the number of physical antennas of a subarray connected to the antenna port.

[0271] Optionally, the physical antenna information may include: the position coordinates of the physical antenna relative to a predetermined reference point on the antenna array, the physical antenna array, and the subarray array connected to the antenna port. The array includes: linear array, planar array, circular array, cylindrical array, L-shaped array, non-uniform array, etc.

[0272] 4) fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0273] a) a second protection interval in the delay domain, where the second protection interval in the delay domain is a minimum protection interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0274] The second guard interval in the delay domain may be the minimum guard interval g of the first signal in the delay domain between any or specified two transmitting antenna ports of the first node. delay . Where g delay =mΔτ=m / B, where Δτ is the delay resolution of the second node, B is the bandwidth of the second node, and m is a positive real number (including positive integers); for example, assuming that the positions of the first signal between the two arbitrary or specified transmitting antenna ports in the delay domain are τ i , τ j , then τ i , τ j Need to satisfy |τ i -τ j |≥g delay .

[0275] b) a second Doppler domain protection interval, where the second Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0276] The second Doppler domain protection interval may be the minimum protection interval g of the first signal in the Doppler domain between any or specified two transmitting antenna ports of the first node. doppler . Where g delay =nΔf=n / T total , where Δf is the Doppler resolution of the second node, T totalis the duration that the second node can use for sensing, and n is a positive real number (including positive integers); for example, assuming that the positions of the first signal in the Doppler domain between the two arbitrary or specified transmitting antenna ports are f i 、f j , then f i 、f j Need to meet |f i -f j |≥g doppler .

[0277] c) a second delay-Doppler domain protection interval, where the second delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0278] The second delay-Doppler domain guard interval may be the minimum guard interval g of the first signal in the delay-Doppler domain between any or specified two transmitting antenna ports of the first node. delay-doppler .in Where Δτ is the delay resolution of the second node, B is the bandwidth of the second node, m is a positive real number (including positive integers), Δf is the Doppler resolution of the second node, T total is the duration that the second node can use for sensing, and n is a positive real number (including positive integers); for example, assuming that the positions of the first signal between the two arbitrary or specified transmitting antenna ports in the delay-Doppler domain are (τ i ,f i ), (τ j ,f j ), then (τ i ,f i ), (τ j ,f j ) need to meet

[0279] d) a delay domain tap indexed second guard interval, where the delay domain tap indexed second guard interval is a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0280] The delay domain tap index second guard interval may be the minimum difference Δi of the index of the DFT signal tap of the first signal in the delay domain between any or specified two transmitting antenna ports of the first node. delay . Where 1≤Δi delay ≤N delay -1 and Δi delay is an integer, N delay is the number of sampling points in the delay domain; for example, assuming that the signal tap indexes of the first signal in the delay domain between the two arbitrary or specified transmitting antenna ports are ip 、i q , where 0≤i p ,i q ≤N delay -1, then i p 、i q Need to satisfy |i p -i q |≥Δi delay .

[0281] e) a second guard interval of a Doppler domain tap index, where the second guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0282] The second guard interval of the Doppler domain tap index may be the minimum difference Δj of the index of the DFT signal tap of the first signal in the Doppler domain between any or specified two transmitting antenna ports of the first node. doppler . Where 1≤Δj doppler ≤M doppler -1 and Δj doppler is an integer, M doppler is the number of sampling points in the Doppler domain; for example, assuming that the signal tap indexes of the first signal in the Doppler domain between the two arbitrary or specified transmitting antenna ports are j p 、j q , where 0≤j p ,j q ≤M doppler -1, then j p 、j q Need to meet |j p -j q |≥Δj doppler .

[0283] f) a second protection interval of a delay-Doppler domain tap index, wherein the second protection interval of the delay-Doppler domain tap index is the minimum difference in the index of the DFT signal taps in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0284] The second guard interval of the delay-Doppler domain tap index may be the minimum difference Δk of the index of the DFT signal tap of the first signal in the delay-Doppler domain between any or specified two transmitting antenna ports of the first node. delay-doppler .in And Δk delay-doppler is an integer, is a rounding operation; for example, assuming that the signal tap indexes of the first signal between the two arbitrary or specified transmitting antenna ports in the delay-Doppler domain are (i p ,j p)、(i q ,j q ), where 0≤i p ,i q ≤N delay -1, 0≤j p ,j q ≤M doppler -1, then (i p ,j p )、(i q ,j q ) need to meet

[0285] It should be noted that the above-mentioned delay domain second guard interval, Doppler domain second guard interval, delay-Doppler domain second guard interval, delay domain tap index second guard interval, Doppler domain tap index second guard interval and delay-Doppler domain tap index second guard interval are similar to the delay domain first guard interval, Doppler domain first guard interval, delay-Doppler domain first guard interval, delay domain tap index first guard interval, Doppler domain tap index first guard interval and delay-Doppler domain tap index first guard interval in the first information, and the differences include: the above-mentioned delay domain second guard interval, Doppler domain second guard interval, delay domain tap index first guard interval, Doppler domain tap index first guard interval and delay-Doppler domain tap index first guard interval in the first information. The second protection interval in the delay domain, the second protection interval in the Doppler domain, the second protection interval in the delay-Doppler domain, the second protection interval in the delay domain tap index, the second protection interval in the Doppler domain tap index and the second protection interval in the delay-Doppler domain tap index are the configuration information of the first signal recommended by the second node, while the first protection interval in the delay domain, the first protection interval in the Doppler domain, the first protection interval in the delay-Doppler domain, the first protection interval in the delay domain tap index, the first protection interval in the Doppler domain tap index and the first protection interval in the delay-Doppler domain tap index are the configuration information actually used by the first signal.

[0286] The suggestion by the second node may be understood as sent by the second node to the first node, such as the second node sending the configuration that it supports or tends to use to the first node.

[0287] In one embodiment, the above-mentioned second protection interval in the delay domain, the second protection interval in the Doppler domain, the second protection interval in the delay-Doppler domain, the second protection interval in the delay domain tap index, the second protection interval in the Doppler domain tap index and the second protection interval in the delay-Doppler domain tap index are the same as the first protection interval in the delay domain, the first protection interval in the Doppler domain, the first protection interval in the delay-Doppler domain, the first protection interval in the delay-Doppler domain tap index, the first protection interval in the Doppler domain tap index and the first protection interval in the delay-Doppler domain tap index in the first information. For example, the first node receives the fourth information from the second node and adopts the suggestion of the second node.

[0288] Of course, at least one of the above-mentioned second protection interval in the delay domain, second protection interval in the Doppler domain, second protection interval in the delay-Doppler domain, second protection interval in the delay domain tap index, second protection interval in the Doppler domain tap index and second protection interval in the delay-Doppler domain tap index may be different from at least one of the first protection interval in the delay domain, first protection interval in the Doppler domain, first protection interval in the delay-Doppler domain, first protection interval in the delay-Doppler domain, first protection interval in the delay domain tap index, first protection interval in the Doppler domain tap index and first protection interval in the delay-Doppler domain tap index in the first information. For example, the first node receives the fourth information from the second node, but the first node does not adopt the suggestion of the second node.

[0289] In this implementation, determining the first information based on the second information from the second node can enable the available resources, detection capabilities, etc. of the second node to support MIMO perception and deambiguation of the first signal configured based on the first information.

[0290] In some implementations, the third information includes at least one of the following:

[0291] 1) Quality of Service (QoS) information of the first service;

[0292] Optionally, the perception QoS may include at least one of the following: priority of the first service (such as perception / synaesthesia integrated service), perception resolution requirement, perception accuracy or perception error requirement + perception confidence requirement, perception delay budget, maximum perception range requirement, continuous perception capability requirement, perception update frequency requirement, and probability of perception service availability.

[0293] For example, the characteristic parameters of QoS perception are defined as shown in Table 2 below:

[0294] Table 2

[0295]

[0296]

[0297]

[0298]

[0299] 2) first a priori information, wherein the first a priori information includes a priori information related to the first service;

[0300] The first prior information may also be referred to as perceptual prior information. Optionally, the first prior information includes at least one of the following:

[0301] At least one of the number, size, area and radar cross section (RCS) of the perceived targets;

[0302] The estimated position coordinates of the sensing target provided by the demander or the sensing network element of the first service, or the estimated position range of the sensing target, or the estimated movement speed range of the sensing target, or the estimated movement speed direction of the sensing target;

[0303] The perception area map information or obstacle information pre-stored in the network;

[0304] The network pre-stores a probability map of the initial position of the perceived target in the perception area;

[0305] state information of the sensing node, the state information including at least one of a position coordinate, an antenna array orientation, and a moving speed (including a speed magnitude and a speed direction), wherein the sensing node may include a first node or a second node, or a base station or a UE participating in the first service;

[0306] A new radio interface NR positioning result of a sensing target, wherein the sensing target may be a UE;

[0307] A first perception result of a dedicated perception node or sensor, wherein the first perception result includes at least one of the following: speed, distance, material, shape, 2D image, 3D image, position coordinates, motion trajectory, and micro-Doppler information of a perceived target;

[0308] The channel information between the transmitter and the receiver of the first signal includes at least one of the following: maximum channel delay, root mean square delay spread, coherence bandwidth, maximum Doppler shift, and root mean square Doppler spread.

[0309] 3) historical perception measurement value of the first service;

[0310] The perceptual measurement comprises at least one of the following:

[0311] a) First-level measurement quantity (received signal / original channel information), including: received signal / channel response complex result, amplitude / phase, I-channel / Q-channel and operation results thereof (operations include addition, subtraction, multiplication and division, matrix addition, subtraction and multiplication, matrix transposition, trigonometric relationship operation, square root operation and power operation, as well as threshold detection results, maximum / minimum value extraction results, etc. of the above operation results; operations also include Fast Fourier Transform (FFT) / Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT) / Inverse Discrete Fourier Transform (IDFT), 2D-FFT, 3D-FFT, matched filtering, autocorrelation operation, wavelet transform and digital filtering, as well as threshold detection results, maximum / minimum value extraction results, etc. of the above operation results);

[0312] b) Second-level measurement quantities (basic measurement quantities), including: time delay, Doppler, angle, intensity, and their multi-dimensional combination representation;

[0313] c) Level 3 measurements (basic attributes / states), including: distance, speed, direction, spatial position, acceleration;

[0314] d) Level 4 measurements (advanced attributes / states), including: target presence, trajectory, movement, expression, vital signs, quantity, imaging results, weather, air quality, shape, material, and composition.

[0315] The perception measurement result may be the above-mentioned perception measurement value, obtained by further calculation (including addition, subtraction, multiplication, division or according to a predetermined function) of the perception measurement value. The perception measurement result may also be the above-mentioned at least one perception measurement value.

[0316] 4) historical perception results of the first service;

[0317] Optionally, the historical perception result of the first service may include a perception result of the same perception target or perception area within a historical time period.

[0318] 5) historical perception performance evaluation index of the first service;

[0319] Optionally, the perceptual performance evaluation index may be calculated based on a perceptual measurement amount, including at least one of the following:

[0320] a) Perception SNR, which is the ratio of the perception signal energy reflected by the perception object or perception area to the noise signal energy in the environment and the device;

[0321] b) Perception signal to interference plus noise ratio (SINR), which is the ratio of the perception signal energy reflected by the perception object or perception area to the sum of the energy of the interference signal and the noise signal in the environment and the device;

[0322] c) The statistical mean, standard deviation or variance of multiple measurements of the same perceptual measurement;

[0323] d) the deviation between the predicted value of the perceived measurement quantity or the perceived result and the actual measured value, as well as the statistical mean, standard deviation or variance of the deviation;

[0324] e) Ambiguity function related evaluation indicators, including Normalized Sidelobe Level (NSL), that is, the height of the highest sidelobe of the normalized ambiguity function; or the ratio of the main lobe to the highest sidelobe of the ambiguity function (or the ratio of the highest sidelobe to the main lobe); in addition, it can also include the number of normalized ambiguity function sidelobes with peak values ​​higher than a given threshold, the total power or total energy, and the main lobe width (3dB width) of the ambiguity function;

[0325] f) Cramér-Rao Lower Bound (CRLB), which is the lowest variance that can be achieved by all unbiased estimators. Mathematically, it is equal to the inverse of Fisher information. This evaluation index is related to the perceived SNR.

[0326] h) Capacity-Distortion Tradeoff, which quantitatively gives the maximum achievable rate of reliable transmission of the synaesthesia integrated system under given distortion constraints;

[0327] i) Equivalent mean square error (Equivalent-MSE), which converts the spectrum efficiency of communication into equivalent radar mean square error and is calculated by combining the perception Cramer-Rao lower bound;

[0328] j) Radar Estimation-Communication Rate: The sensing channel is regarded as a non-cooperative communication channel, and the mutual information between the sensing system and the target is the estimation rate;

[0329] k) Welch Bound;

[0330] l) Perceptually reproducible evaluation indicators (such as the sum of the Euclidean distances between the sample points of the previous and next two sequences, or the regularized path distance in dynamic time warping (DTW), or other indicators that can reflect the similarity of two sequences, including but not limited to: Longest Common Subsequence (LCSS), Edit Distance on Real Sequences (EDR), Edit Distance with Real Penalty (ERP), Hausdorff Distance, Fréchet Distance, One Way Distance (OWD), Locality In-between Polylines (LIP), etc.);

[0331] m) The calculation result obtained by adding, subtracting, multiplying or dividing any one of at least two of the above-mentioned perceived SNR, perceived SINR, Cramer-Rao lower bound CRLB, etc.

[0332] 6) communication QoS information related to the first signal;

[0333] 7) second configuration information, where the second configuration information is used to configure communication parameters of the first signal;

[0334] The second configuration information may be referred to as communication parameter configuration information.

[0335] In some implementations, the first signal may be a communication signal carrying communication information, in which case the first signal also needs to satisfy the second configuration information or communication QoS information. Determining the first information based on the communication parameter configuration information or communication QoS information of the first signal may enable the first signal to be compatible with the MIMO perception configuration and the communication configuration.

[0336] 8) Fifth information, the fifth information including at least one of the following:

[0337] a) a first identifier, wherein the first identifier is used to identify a sensing area;

[0338] The sensing area is a target area to be sensed, which may be divided in advance and includes:

[0339] i) Multiple base station coverage areas (cells) form a perception area, associated with a perception area identifier n areaID ,like Figure 9aAs shown, each hexagonal area represents a base station coverage area, and the same filled area represents the same perception area. In particular, a RAN-based notification area may be used as a perception area, and the RNAID may be used as the first identifier.

[0340] ii) A single base station coverage area (cell) includes multiple sensing areas, which are associated with multiple second identifiers. For example, the base station is used as the origin, and its coverage area is rasterized and divided into multiple sensing areas. Each sensing area is associated with an area ID (second identifier) ​​and is recorded as n. areaID ,like Figure 9b As shown, the dotted line represents the base station coverage area, and each square represents a divided sensing area.

[0341] iii) It is also possible to directly use a geographical area identifier that is independent of the base station location, such as longitude and latitude or coordinates, to generate an area ID n areaID Among them, n areaID This is the first identifier.

[0342] iv) Different angle ranges relative to the base station can also be associated with different area IDs n areaID For example, the azimuth angle x1°~x2° and the elevation angle y1°~y2° correspond to the sensing area ID1. areaID This is the first identifier.

[0343] It is worth mentioning that when multiple first nodes jointly perceive the same perception area, multiple first nodes use a common area ID to generate a perception signal. Optionally, the generation parameters of the perception signal are independent of the cell identifier or the UE identifier, that is, different first nodes can use the same perception signal generation parameters, which is convenient for further construction of code-division orthogonal perception signals (for example: first generate a first perception signal based on the same generation parameters, and different first nodes use the same first perception signal and different orthogonal cover codes (Orthogonal Cover Code, OCC) sequences to generate mutually orthogonal second perception signals and use them for perception measurement). The second node can obtain the perception signal and perform measurements based on the same perception signal generation parameters and code-division orthogonal method, which reduces interference between signals of different devices and can reduce signaling overhead, thereby improving measurement efficiency.

[0344] b) a second identifier, where the second identifier is used to identify the first service, or the type of the first service, or whether the first service is used for sensing;

[0345] The second identifier is generated based on whether the second identifier is used for perception, or a specific perception service identifier, or a perception service type identifier, including:

[0346] i) Generate a second identifier based on whether the identifier is used for perception, for example: assuming that the second identifier is n sensingID , when not used for perception sensingID =0; when used for perception n sensingID =1.

[0347] ii) Determine the second identifier based on the specific perception service identifier, for example: different perception services correspond to different perception service ID n sensingID , for example: Awareness services may indicate the following:

[0348] Detection of target presence, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, category classification, radar cross section RCS (Radar Cross Section, RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc.

[0349] iii) The second identifier may also be an identifier of the type of the sensing service. Different types correspond to different sensing service IDs. sensingID For example, the sensing functions or service types are divided into the following sensing service types according to the scope:

[0350] Category 1 (close distance / small range): material analysis, component analysis, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, breathing monitoring, heart rate monitoring, pulse monitoring, etc.

[0351] The second category (medium distance / medium range): intrusion detection, population counting, indoor positioning, etc.

[0352] The third category (long distance / large range): humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environmental reconstruction, topography, building / vegetation distribution detection, pedestrian or vehicle flow detection, etc.

[0353] In other implementations, other classification standards may be used, such as dividing the perception service types according to functions into positioning type perception, imaging type perception, pattern recognition type perception, etc., or the perception service types may be divided according to power consumption / energy consumption, or the perception service types may be divided according to resource occupancy, etc.

[0354] c) a third identifier, where the third identifier is used to identify the sensing target, such as a sensing target identifier or a tag identifier associated with the sensing target;

[0355] Optionally, the third identifier may include at least one of the following:

[0356] i) The identification of the sensing target obtained by the signal sending device. Different sensing targets correspond to different sensing target IDn targetID , wherein the determination of the perceived target may be based on prior information obtained from existing measurement results, for example, base station A sends a perception measurement signal through an omnidirectional beam for preliminary measurement, base station A obtains a distance Doppler map (or a distance angle map, etc.), determines the number of targets based on the distance Doppler map, and assigns an ID to each target; or, base station A sends a perception measurement signal through an omnidirectional beam for preliminary measurement, a receiving device (such as another base station or terminal) obtains a distance Doppler map (or a distance angle map, etc.), determines the number of targets based on the distance Doppler map, and assigns an ID to each target, and then notifies the sending base station of the target ID and / or target-related information. After the signal sending device determines the ID of each target, it generates signals for sensing different targets according to different target IDs, and these perception signals are sent using different beams, with the beam direction pointing to the perception target associated with the target ID;

[0357] ii) The sensing target is equipped with a tag, and different tags are associated with different tag IDs. The sending device obtains the tag ID of the corresponding target, and then obtains the signal used to sense different sensing 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 is the tag itself. It can also be a UE, that is, a common transceiver module is installed on the sensing target, such as a communication device such as a vehicle terminal installed on a car.

[0358] iii) Identification of the perceived target type. Different types correspond to different perceived target IDs. For example, they can be 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 .

[0359] d) a fourth identifier, the fourth identifier being used to identify the perception measurement quantity;

[0360] In some implementations, the perception signal may be generated according to the measurement quantity identifier. For example, the association relationship between at least one of the perception measurement quantities and the measurement quantity identifier is shown in Table 3 below:

[0361] Table 3

[0362] Perception measurement ID Perceptual Measurement ID1 Delay / Distance ID2 Doppler / speed ID3 angle ID4 Delay / distance, Doppler / speed ID5 Delay / distance, Doppler / speed, angle … …

[0363] e) a fifth identifier, where the fifth identifier is used to identify a device participating in the sensing measurement, such as a cell identifier or a terminal identifier (eg, a Radio Network Temporary Identifier (RNTI));

[0364] f) Time domain resource information, such as 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;

[0365] g) Frequency domain resource information, such as resource element RE index, resource block RB index, frequency point information, frequency band information, bandwidth, frequency domain density, and subcarrier spacing.

[0366] In addition, at least one item of the above-mentioned time domain resource information or frequency domain resource information can be identified by introducing at least one item of a perception resource block index, a port index or an antenna index, and a codeword index, wherein the perception resource block contains multiple PRBs and multiple time slots / symbols, that is, contains specific time-frequency domain resources (for example, performing a two-dimensional FFT operation to obtain the frequency domain resource length and time domain resource length corresponding to the range Doppler map).

[0367] It is worth mentioning that after the first node and the second node respectively determine the configuration of the first signal based on the first information, MIMO perception can be realized. For example: the first node determines the first signal transmitted by each transmitting antenna port according to the first information, and the second node receives the first signal after being reflected by the perception target to obtain the perception measurement quantity measurement value. Thereafter, at least one of the first node, the second node or the first device can compare the perception measurement quantity measurement value of the received first signal with the first signal transmitted by each transmitting antenna port determined based on the first information to obtain at least one of the perception result and the perception performance evaluation index measurement value.

[0368] In some implementations, the second node may also obtain parameter configuration information of the first signal, such as the first configuration information, and determine at least one of the perception result and the perception performance evaluation index measurement value according to the parameter configuration information of the first signal and the perception measurement value.

[0369] It should be noted that the configuration information of the first signal or the first information can be adjusted according to the above-mentioned perceptual performance evaluation indicator measurement value. For example, when the perceptual performance evaluation indicator measurement value obtained based on the first information indicates that the perceptual signal to interference and noise ratio is low, the transmission power of the first signal can be increased.

[0370] As an optional implementation manner, the MIMO sensing method further includes:

[0371] The first node receives sixth information from the second node, where the sixth information is determined based on MIMO perception of the first signal, and the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0372] In some implementations, after determining the sixth information, the second node may send the sixth information to the first node.

[0373] In some implementations, after determining the sixth information, the second node may send the sixth information to the first device through the first node.

[0374] Of course, the second node may also directly send the sixth information to the first device.

[0375] For example, the transmission path of the sixth information may include at least one of the following:

[0376] The second node sends at least one of the perception measurement value, the perception performance evaluation index measurement value, and the perception result to the first node;

[0377] The second node sends at least one of the sensing measurement value, the sensing performance evaluation index measurement value, and the sensing result to a sensing core network device (e.g., a sensing function network element (Sensing Function, SF), an access and mobility management function (Access and Mobility Management Function, AMF), a sensing application server in the core network, etc.);

[0378] The second node sends at least one of the perception measurement value, the perception performance evaluation index measurement value, and the perception result to the first node, and the first node sends at least one of the perception measurement value, the perception performance evaluation index measurement value, and the perception result to the perception core network device.

[0379] In some implementations, the MIMO sensing method further includes:

[0380] The first node updates the first information according to the sixth information;

[0381] The first node transmits an updated first signal through at least two transmitting antenna ports according to the updated first information.

[0382] It should be noted that the process of the first node updating the first information may include the first node updating the local first information, that is, transmitting the first signal based on the updated first information. In addition, the first node also updates the first information of the second node so that the second node performs MIMO perception based on the updated first information.

[0383] In some implementations, the first node may update the first information when determining, based on the sixth information, that the perceived performance indicated by the measured value of the perceived performance evaluation indicator is lower than a preset perceived performance.

[0384] In this implementation, the first node may update the first information based on at least one of a perception measurement value based on the first signal, a perception performance evaluation index measurement value, and a perception result, and re-execute the MIMO perception process based on the updated first information, so that the perception performance may be gradually improved.

[0385] As an optional implementation manner, when the first information includes the first sequence information, and the first phase rotation factor or the first phase difference, the first node transmits the first signal through at least two transmitting antenna ports, including:

[0386] The first node determines, according to the first sequence information, a first sequence mapped on at least one resource set by a first signal transmitted by at least two transmit antenna ports of the first node;

[0387] The first node performs a first operation on the sequence elements mapped by the first signal on at least two resource sets in the frequency domain, respectively, so that the ratio of the first difference to the first interval is equal to the first phase rotation factor; or, the difference of the phase values ​​of the sequence elements on two adjacent resource sets in the frequency domain rotated as a whole is equal to the first phase difference, wherein the first difference is the difference of the phase values ​​of the sequence elements on any two different resource sets in the frequency domain, and the first interval is the frequency domain interval of any two different resource sets in the frequency domain;

[0388] The first operation is a phase rotation operation.

[0389] by Figure 4a For example, after the first operation, it is assumed that the first phase differences (i.e., the difference in the phase values ​​of the first sequence elements mapped to two adjacent subcarriers of the same OFDM symbol) used by the first sequence mapped by the four OFDM symbols in time slot (Slot) n and time slot n+1 are respectively There may be one of the following situations: (a) All REs on one OFDM symbol are one resource set, (b) All REs in a time slot are a resource set. (c) All REs on one OFDM symbol are one resource set.

[0390] It should be pointed out that Figure 4aIn the time-frequency resource mapping of the first signal shown, it is assumed that one resource set may also include all REs in at least two time slots.

[0391] In this embodiment, the first node rotates the phase of the first sequence elements mapped on at least one resource set in the frequency domain as a whole through the first operation, so that as the frequency domain index of the resource set increases, the rotated phase value of the first sequence elements mapped on each resource set increases within the range of 2π, or, as the frequency domain index of the resource set decreases, the rotated phase value of the first sequence elements mapped on each resource set decreases within the range of 2π.

[0392] As an optional implementation manner, when the first information includes the first sequence information, and the second phase rotation factor or the second phase difference, the first node transmits the first signal through at least two transmitting antenna ports, including:

[0393] The first node determines, according to the first sequence information, a first sequence mapped on at least two resource sets by a first signal transmitted by at least two transmit antenna ports of the first node;

[0394] The first node performs a second operation on the sequence elements mapped by the first signal on at least two resource sets in the time domain, respectively, so that the ratio of the second difference to the second interval is equal to the second phase rotation factor; or, so that the difference in the phase values ​​of the sequence elements on two adjacent resource sets in the time domain are rotated as a whole is equal to the second phase difference; wherein the second difference is the difference in the phase values ​​of the sequence elements on any two different resource sets in the time domain, and the second interval is the time domain interval of any two different resource sets in the time domain;

[0395] The second operation is a phase rotation operation.

[0396] by Figure 4a For example, after the second operation, the second phase differences (i.e., the difference in the phase values ​​of the first sequence elements on any two adjacent OFDM symbols rotated as a whole) used by the first sequence mapped by the four OFDM symbols in time slot n and time slot n+1 are θ respectively. 1 ,θ 2 ,θ 3 , where θ 1 is the difference between the phase value of the first sequence element of the second OFDM symbol rotated as a whole and the phase value of the first sequence element of the first OFDM symbol rotated as a whole, θ 2 is the difference between the phase value of the first sequence element of the third OFDM symbol rotated as a whole and the phase value of the first sequence element of the second OFDM symbol rotated as a whole, θ 3is the difference between the phase value of the first sequence element of the fourth OFDM symbol and the phase value of the first sequence element of the third OFDM symbol. There may be one of the following situations: (a) All REs on one OFDM symbol are one resource set, θ 1 =θ 2 =θ 3 ≠0; (b) All REs in a time slot are a resource set, θ 1 =θ 3 =0,θ 2 ≠0.

[0397] In this embodiment, the first node rotates the phase of the first sequence elements mapped on at least one resource set in the time domain as a whole through the second operation, so that as the time domain index of the resource set increases, the rotated phase value of the first sequence elements mapped on each resource set increases within the range of 2π, or, as the time domain index of the resource set decreases, the rotated phase value of the first sequence elements mapped on each resource set decreases within the range of 2π.

[0398] It is worth mentioning that if Figure 4d As shown, after at least one of the above-mentioned first operation and the above-mentioned second operation, the time-frequency resources mapped by the first signal can overlap with the time-frequency resources mapped by the communication data signal.

[0399] In addition, when the first node performs the first operation and the second operation respectively, the execution order of the first operation and the second operation is not limited, that is, the first operation can be performed first, and then the second operation; or the second operation can be performed first, and then the first operation; or the first operation and the second operation can be performed simultaneously.

[0400] In some embodiments, the first operation and the second operation can be performed simultaneously. In this case, the first operation and the second operation can be equivalent to a precoding operation, that is, the first operation and the second operation can be implemented by precoding the first signal in the frequency domain and the time domain at the same time. In a specific implementation, the first sequence element mapped in the frequency domain and the time domain is multiplied by at least one row or one column of the precoding matrix to achieve the same effect as the first operation and the second operation being performed simultaneously. Therefore, it should be understood that precoding operations that are equivalent to the first operation and the second operation are also within the scope of protection of this patent.

[0401] In some embodiments, when the speed of the perceived target exceeds the maximum unambiguous speed interval of the first signal, or the distance of the perceived target exceeds the maximum unambiguous distance interval of the first signal, the second node needs to perform deambiguation according to the first information.

[0402] Among them, the defuzzification methods generally include the following three types:

[0403] Deambiguation method 1: Deambiguation is performed based on the first phase rotation factor or the first phase difference, or the second phase rotation factor or the second phase difference.

[0404] As Figure 4a Assume that the first signal pattern shown in FIG. 1 and each transmitting antenna port of the first signal sends the same first sequence as an example, and assume that the first sequence occupies M consecutive PRBs in the frequency domain, and Figure 4a In the example, all the REs mapped to the first sequence on one OFDM symbol are regarded as one resource set. Assume that the resource set is repeatedly transmitted N times in the time domain (that is, the first sequence is repeatedly transmitted N times in the time domain). At the same time, assume that the number of transmitting antenna ports is N. tx =4, and the perceived target speed is v. In order to explain the problem simply and clearly, it is assumed that only the second operation or precoding equivalent to the second operation is performed, that is, the signals of each transmitting antenna port are separated only in the Doppler domain.

[0405] It should be noted that, assuming that multiple transmitting antenna ports are not considered, the maximum unambiguous speed range of the above configuration is [-v max ,v max ]. In the related Doppler-DM radar technology, based on N phase =N tx , the second phases are 0,π / 2,π,3π / 2 respectively. The original unambiguous velocity interval is divided into [-v max ,-v max / 2], [-v max / 2,0]、[0,v max / 2]、[v max / 2,v max ]4 intervals, such as Figure 6a As shown in the figure, when the perceived target speed falls into one of the above four intervals in turn, the signals of each transmitting port will fall into the above four intervals in turn. When this solution is applied to MIMO sensing, since each transmitting antenna port sends the same first sequence, the receiving end cannot determine which interval of the above four intervals the perceived target's actual speed falls into, that is, there is speed estimation ambiguity.

[0406] In the defuzzification method provided in this embodiment, N phase >N tx , for example: N phase =N tx +2, according to formula (1), the second phase is 0,π / 3,2π / 3,π respectively. At this time, the original unambiguous speed interval is divided into [-v max ,-2v max / 3], [-2v max / 3,-v max / 3], [-v max / 3,0]、[0,v max / 3]、[v max / 3,2v max / 3]、[2v max / 3,v max ]6 intervals, such as Figure 6b As shown in the figure, when the perceived target speed falls into one of the above 6 intervals in turn, the signals of each transmitting port will fall into the continuous 4 intervals of the above 6 intervals in turn. In this way, as long as the second node determines which two intervals among the 6 intervals the first signal is not received, it can infer which interval the signals of each transmitting antenna port fall into, and thus the real speed of the perceived target can be inferred, and the ambiguity resolution is completed.

[0407] Similar to the above-mentioned Doppler domain deambiguation, the above-mentioned deambiguation method can also be applied in the delay domain, or in the delay Doppler domain. The relevant configuration and process of its deambiguation are similar to the relevant configuration and process of the above-mentioned Doppler domain deambiguation, and will not be repeated here.

[0408] It is worth mentioning that if each transmitting antenna port of the first signal adopts a different first sequence or a pseudo-random sequence with a low mutual correlation (such as a ZC sequence, an m sequence, a Gold sequence, etc.), then N can be configured. phase =N tx In this case, the signals of each transmit antenna port can be separated directly in the time domain through matched filtering operation (related to time domain sliding), but due to the imperfect cross-correlation between the sequences, the signals of each transmit antenna port have crosstalk. phase >N tx , which is equivalent to further orthogonal encoding the signals of each transmitting antenna port in the slow time dimension, which can further improve the isolation of the signals of each transmitting antenna port and thus improve the MIMO perception performance.

[0409] It should be noted that, when the above defuzzification method 1 is adopted, the first information includes at least one of the following:

[0410] first sequence information, a first phase rotation factor or a first phase difference, and a second phase rotation factor or a second phase difference.

[0411] Deambiguation method 2: Deambiguation is performed based on the first protection interval (including at least one of the first protection interval in the delay domain or the first protection interval in the delay domain tap index, the first protection interval in the Doppler domain or the first protection interval in the Doppler domain tap index).

[0412] For example: Assume that the first node continuously sends a full "1" sequence, and the number of transmitting antenna ports of the first node is N tx =4. Each transmit port uses the same sequence and time-frequency resource mapping, but uses different first phase rotation factors and second phase rotation factors (or uses an equivalent set of different precoding matrices / vectors). Figure 5 Taking the first signal configuration in the delay-Doppler domain as an example, the above deambiguation method based on the first guard interval is characterized by:

[0413] The intervals between the first signals of the transmitting antenna ports of the first node in the delay domain and / or Doppler domain are different from each other, and the intervals are not less than a set minimum interval.

[0414] In some embodiments, the interval is not less than a set minimum interval, including at least one of the following:

[0415] The interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the delay domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the tap index of the delay domain;

[0416] The interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval in the Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval of the tap index in the Doppler domain;

[0417] The interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the delay Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the tap index of the delay Doppler domain.

[0418] For example, assuming that the first guard interval of the delay domain tap index is 3 and the first guard interval of the Doppler tap index is 4, Figure 5 As shown in the two tables, the delay domain tap index intervals of the first signal of each transmitting antenna port are different, and the minimum interval is 3. The Doppler domain tap index intervals of the first signal of each transmitting antenna port are different, and the minimum interval is 6, both of which meet the above requirements.

[0419] For the sake of simplicity and clarity, the deambiguation method is described below based on the delay spectrum and the Doppler spectrum respectively.

[0420] Assume that the propagation path length of the target reflection signal is sensed to cause the delay tap index to be 7, and the Doppler tap index is sensed to be 10. Any one receiving antenna port obtains the delay spectrum, Doppler spectrum, or delay-Doppler spectrum based on the first signal parameter configuration of each transmitting antenna port in turn.

[0421] Among them, the method for obtaining the delay spectrum, or the Doppler spectrum, or the delay-Doppler spectrum can be to divide or conjugate the received signal of the receiving antenna port by the first signal point of the corresponding transmitting antenna port in the frequency domain, and then perform an inverse discrete Fourier transform (Inverse Discrete Fourier Transform, IDFT), or it can be to match filter the received signal in the time domain using the matched filter of the first signal of the corresponding transmitting antenna port.

[0422] Based on Figure 5 The above signal processing of the first signal shown in FIG. Figure 7a The delay spectrum and Figure 7b The Doppler spectrum is shown in Figure 2. Figure 7a The delay profiles 1-4 in the figure correspond to the transmitting antenna ports 1-4 of the first signal respectively; Figure 7b The Doppler spectra 1-4 in the correspond to the transmitting antenna ports 1-4 of the first signal respectively; each grid point in each delay spectrum corresponds to a delay tap, and a filled grid point indicates that there is a signal energy peak at the position of the delay tap, otherwise it indicates that there is no signal energy peak; each grid point in each or Doppler spectrum corresponds to a Doppler tap, and a filled grid point indicates that there is a signal energy peak at the position of the Doppler tap, otherwise it indicates that there is no signal energy peak.

[0423] Since each transmitting antenna port sends the same first sequence, each delay spectrum and Doppler spectrum will have four peaks. It is impossible to determine the actual delay or Doppler by looking at any delay spectrum or Doppler spectrum alone.

[0424] However, it is noted that: (a) only at the position where the delay tap index is 7, the signal energy peak appears in all 4 delay spectra (as shown in the dotted box in the figure), and for other delay tap index positions, there are at most 2 delay spectra with signal energy peaks at the same time; (b) only at the position where the Doppler tap index is 10, the signal energy peak appears in all 4 Doppler spectra, and there is no simultaneous signal energy peak between different Doppler spectra at other Doppler tap index positions. Based on the above observations, the true signal energy peak position can be determined according to the simultaneous peaks of multiple delay spectra and / or Doppler spectra, and then the true delay and / or Doppler of the perceived target can be determined to complete the ambiguity resolution.

[0425] Optionally, a simple and effective receiving end processing method is to directly superimpose the above-mentioned multiple delay spectra and / or Doppler spectra, that is, directly add (or take the arithmetic average) the powers of different delay taps, and then perform real peak and fuzzy peak judgment through a preset threshold (such as a first threshold value, a second threshold value or a third threshold value).

[0426] It should be noted that, when the above-mentioned defuzzification method 2 is adopted, the first information includes at least one of the following:

[0427] The first guard interval in the delay domain, the first guard interval in the Doppler domain, the first guard interval in the delay-Doppler domain, the first guard interval in the delay domain tap index, the first guard interval in the Doppler domain tap index, and the first guard interval in the delay-Doppler domain tap index.

[0428] Among them, the first protection interval in the delay domain has the same function as the first protection interval in the delay domain tap index, and the first information may include only one of them; the first protection interval in the Doppler domain has the same function as the first protection interval in the Doppler domain tap index, and the first information may include only one of them; the first protection interval in the delay-Doppler domain has the same function as the first protection interval in the delay-Doppler domain tap index, and the first information may include only one of them.

[0429] Defuzzification method three: Defuzzification based on repeated sending of resource sets.

[0430] As Figure 4a As an example, assume that Figure 4a All first signal mapping REs in one PRB and one time slot are configured as one resource set. And assuming that a total of M 1 ≥1 resource set, a total of M are configured in the time domain 2 ≥1 resource set. 1 ,M 2 Cannot take 1 at the same time.

[0431] The above-mentioned deambiguation method based on repeated transmission of resource sets is characterized by:

[0432] The multiple resource sets are repeatedly sent in the time domain for N s >1 times, if the first phase rotation factors used in the i,j (i≠j) transmission are The first phase differences are For any i=1,2,...,N s ,j=1,2,...,N s And i≠j, we have If the second phase rotation factors used in the i,j (i≠j) transmission are The second phase differences are θ i,θ j , for any i=1,2,...,N s ,j=1,2,...,N s And i≠j, we have θ i ≠θ j The second node receives the M 1 ×M 2 A resource set can obtain a delay-Doppler spectrum based on a total of N s >1 delay-Doppler spectrum to complete the deambiguation or de-overlapping.

[0433] In one embodiment, when M 2 =1, the second node receives M 1 ≥1 resource set can obtain 1 delay profile, based on a total of N s >1 time delay spectrum to complete the deambiguation or de-overlapping.

[0434] In one embodiment, when M 1 =1, the second node receives M 2 >1 resource set can obtain 1 Doppler spectrum, based on a total of N s >1 Doppler spectrum is used to complete the deambiguation or de-overlapping.

[0435] In this deambiguation method, the delay domain and the Doppler domain can be deambiguated or de-overlapped respectively, that is, by N s,1 >1 resource set, complete the delay domain deambiguation or de-overlapping, through N s,2 >1 resource set to complete Doppler domain deambiguation or de-overlapping, and there is no requirement for the order of the two processes. s,1 Indicates the number of repetitions of the resource set in the frequency domain, N s,2 Indicates the number of times the resource set is repeatedly sent in the time domain.

[0436] For the sake of clarity and simplicity, the following only takes the delay domain deambiguation / de-overlapping as an example for explanation. The Doppler domain deambiguation / de-overlapping method is the same and will not be described in detail here.

[0437] For example: Assume that the number of transmitting antenna ports is N tx =4, the propagation path length of the perceived target reflected signal causes the delay tap index to be 8. Figure 8a The example in the delay domain is that the first node's four transmitting antenna ports continuously send the first signal five times. Here, it is assumed that the delay domain tap index second protection interval is 2. Taking the first signal sent for the i=1th time as an example, any receiving antenna port at the receiving end is calculated based on the first signal of each transmitting antenna port according to the method in the above deambiguation method 2 to obtain the following: Figure 8b The delay spectrum shown is Figure 8b The delay profile shown suffers from delay estimation ambiguity.

[0438] In order to improve the perceived signal to noise ratio (SNR), a delay spectrum merging method may be to directly superimpose the above four delay spectrums, that is, directly add (or take the arithmetic average) the power of different delay taps. s Perform the above operations and get Figure 8c N shown s =5 combined delay spectra. By comparing the combined delay spectra, it can be found that only at the position where the delay tap index is 8, the signal energy peak appears in all 5 Doppler spectra, and the signal energy peaks do not appear simultaneously between different Doppler spectra at other Doppler tap index positions. Therefore, a defuzzification method similar to the defuzzification method 2 can be used to determine the true signal energy peak position based on the simultaneous occurrence of peaks in multiple delay spectra and / or Doppler spectra, and then determine the true delay and / or Doppler of the perceived target to complete the defuzzification.

[0439] Optionally, a simple and effective receiving end processing method is to convert the above N s = 5 combined delay spectra are directly superimposed, that is, the powers of different delay taps are directly added (or arithmetic averaged), and then the real peak and the fuzzy peak are judged by a preset threshold (such as the first threshold value, the second threshold value or the third threshold value).

[0440] It should be noted that, when the above-mentioned deambiguation method 3 is adopted, the first information at least includes the number of repeated transmissions N of the resource set. s .

[0441] In addition, the first threshold value, the second threshold value or the third threshold value in the first information is associated with the deambiguation method, that is, based on different deambiguation methods, the first threshold value, the second threshold value or the third threshold value used to determine the signal energy peak value may be different.

[0442] In an embodiment of the present application, the first node transmits the first signal through at least two transmitting antenna ports according to the first information for configuring the first signal, and the second node obtains at least one of a perception measurement value, a perception performance evaluation index measurement value and a perception result according to MIMO perception of the first signal, wherein the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain, so that MIMO perception can be achieved based on a signal orthogonal method in at least one of the delay domain and the Doppler domain. MIMO perception based on an orthogonal method in the delay domain or the Doppler domain can improve the utilization rate of signal resources used for MIMO perception compared to MIMO perception based on TDM and FDM orthogonal methods in related technologies, and can improve the reliability of MIMO perception compared to MIMO perception based on CDM orthogonal methods in related technologies.

[0443] See also Fig.10 The MIMO sensing method provided in the embodiment of the present application may be performed by a second node. Fig.10 As shown, the MIMO sensing method includes the following steps:

[0444] Step 1001: A second node obtains first information, where the first information is configuration information of a first signal.

[0445] Step 1002: The second node performs MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0446] Among them, the first information, the sixth information, the first signal and the Figure 3 The first information, the sixth information, and the first signal in the illustrated method embodiment have the same meaning and function, which will not be described in detail herein.

[0447] In the embodiments of this application and Figure 3 The method embodiment shown corresponds to the embodiment shown in FIG. Figure 3 The method embodiment shown is that the first node transmits a first signal based on the first information, such as Fig.10 The method embodiment shown is that the second node performs MIMO perception on the first signal based on the first information, and the two are combined with each other to jointly realize the MIMO perception function.

[0448] In some implementations, the MIMO sensing method further includes:

[0449] The second node acquires first configuration information, where the first configuration information is used to configure other configuration information of the first signal except for the first information, such as transmit power, emission angle, etc.;

[0450] The second node performs MIMO sensing on the first signal to obtain sixth information, including:

[0451] The second node performs MIMO sensing on the first signal according to the first information and the first configuration information to obtain sixth information.

[0452] The first configuration information is as follows: Figure 3 The first configuration information in the illustrated method embodiment has the same meaning and function, which will not be described in detail here.

[0453] Optionally, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0454] Optionally, the first information includes at least one of the following:

[0455] first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0456] a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain;

[0457] A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0458] a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain;

[0459] a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0460] The indication information of the resource set is used to indicate the resource set division status of at least one transmit antenna port of the first node, wherein the time-frequency resources in the same resource set use the same first phase rotation factor or the first phase difference, or use the same second phase rotation factor or the second phase difference;

[0461] first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0462] Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0463] third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0464] Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0465] First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

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

[0467] A first guard interval in the delay domain, indicating a minimum guard interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0468] A first Doppler domain protection interval, indicating a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0469] A first delay-Doppler domain guard interval, indicating a minimum guard interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0470] A first guard interval of a delay domain tap index indicates a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0471] A Doppler domain tap index first protection interval, indicating a minimum difference in indexes of DFT signal taps in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0472] A first guard interval of a delay-Doppler domain tap index indicates a minimum difference in indexes of DFT signal taps in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0473] fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0474] Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0475] seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0476] eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0477] Ninth association information, used to indicate the association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0478] The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

[0479] Optionally, the first information further includes at least one of the following:

[0480] The second indication information is used to indicate information related to delay domain deambiguation;

[0481] The third indication information is used to indicate information related to Doppler domain deambiguation;

[0482] Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0483] The number of times the resource collection is sent repeatedly.

[0484] Optionally, the second node acquires the first information, including:

[0485] The second node receives first information from at least one of a first device and a first node, wherein the first device includes a core network element for a first service, the first service is a service corresponding to MIMO perception, and the first node includes a sending end device of the first signal.

[0486] Optionally, before the second node receives the first information from the first node, the method further includes:

[0487] The second node sends second information to at least one of the first device and the first node, where the second information indicates information related to the sensing capability of the second node for receiving the first signal.

[0488] Optionally, the second information includes at least one of the following:

[0489] Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0490] first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0491] hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information;

[0492] Fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0493] A second guard interval in the delay domain, indicating a minimum guard interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0494] A second Doppler domain protection interval, indicating a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0495] A second delay-Doppler domain guard interval, indicating a minimum guard interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0496] A delay domain tap index second protection interval, indicating a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0497] A Doppler domain tap index second protection interval, indicating a minimum difference in indexes of DFT signal taps in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0498] The delay-Doppler domain tap index second protection interval indicates the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0499] Optionally, the second indication information includes at least one of the following:

[0500] Information on the type of time-delay domain defuzzification method;

[0501] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0502] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

[0503] Optionally, the third indication information includes at least one of the following:

[0504] Doppler domain deambiguation method type information;

[0505] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0506] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

[0507] Optionally, the fourth indication information includes at least one of the following:

[0508] Information on the type of delay-Doppler domain deambiguation method;

[0509] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0510] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0511] Optionally, the method further comprises:

[0512] The second node sends the sixth information to at least one of the first node and the first device.

[0513] Optionally, the method further comprises:

[0514] The second node receives the updated first information from at least one of the first node and the first device;

[0515] The second node performs MIMO sensing on the updated first signal according to the updated first information to obtain updated sixth information.

[0516] In some implementations, the second node performs MIMO sensing on the first signal to obtain sixth information, including:

[0517] The second node separates the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference;

[0518] The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the delay domain to obtain sixth information.

[0519] In one embodiment, if the first sequence of each antenna transmission port adopts a different pseudo-random sequence with low mutual correlation (such as a ZC sequence, an m sequence, a Gold sequence, etc.), the signal of each transmission antenna port can be separated in the time domain through a matched filtering operation (time domain sliding correlation).

[0520] In this implementation manner, due to the imperfect cross-correlation between the first sequences of the transmitting ports of each antenna, crosstalk exists in the signals of each transmitting antenna port.

[0521] In another implementation, each antenna transmission port may use the same first sequence and configure N phase >N t At this time, the original unambiguous speed interval is divided into N phase >N tx intervals, when the perceived target speed falls into the above N intervals in turn phase >N tx When one of the intervals is reached, the signals of each transmitting port will fall into the above N intervals in turn. phase >N tx N consecutive intervals tx In this way, the second node only needs to determine phase >N tx By knowing which interval or intervals among the intervals in which the first signal is not received, it is possible to infer in which interval the signals of each transmitting antenna port fall, and thus the true speed of the perceived target can be inferred, thus completing the deambiguation in the delay domain.

[0522] Optionally, the method further comprises:

[0523] The second node divides the first distance interval into N according to the first phase rotation factor or the first phase difference. phase distance sub-intervals; wherein the N phase N in the distance subintervaltx corresponds to the at least two transmitting antenna ports one by one, the first distance interval is the maximum unambiguous distance interval corresponding to a single transmitting antenna port, N tx is the number of antenna ports for transmitting the first signal, N phase is greater than N tx integer;

[0524] The second node receives the N phase The first signal corresponding to each of the N distance sub-intervals is determined according to the position of the target distance sub-interval where the first signal is not received. phase N of the speed sub-intervals tx The corresponding transmitting antenna ports.

[0525] In some implementations, the second node performs MIMO sensing on the first signal to obtain sixth information, including:

[0526] The second node separates the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference;

[0527] The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the Doppler domain to obtain sixth information.

[0528] This implementation is similar to the above-mentioned delay domain deambiguation. The first signal transmitted by different transmitting antenna ports can be separated in the Doppler domain through the second phase rotation factor or the second phase difference to complete the Doppler domain deambiguation.

[0529] Optionally, the method further includes:

[0530] The second node divides the first speed interval into N phase speed sub-intervals; wherein the N phase N of the speed sub-intervals tx corresponds to the at least two transmitting antenna ports one by one, the first speed interval is the maximum unambiguous speed interval corresponding to the single transmitting antenna port, N tx is the number of antenna ports for transmitting the first signal, N phase is greater than N tx integer;

[0531] The second node receives the N phase The first signal corresponding to each of the N speed sub-intervals is determined according to the position of the target speed sub-interval where the first signal is not received. phaseN of the speed sub-intervals tx The corresponding transmitting antenna ports.

[0532] As an optional implementation, the method further includes:

[0533] The second node detects the delay power spectra corresponding to the at least two transmitting antenna ports respectively according to the first guard interval in the delay domain or the first guard interval in the delay domain tap index;

[0534] The second node determines a target delay tap index according to the delay power spectra corresponding to each of the at least two transmit antenna ports, wherein the delay corresponding to the target delay tap index corresponds to a signal energy peak of the first signal corresponding to each of the at least two transmit antenna ports;

[0535] A time domain peak value of the first signal is determined according to the target delay tap index.

[0536] In this implementation, the second node may adopt Figure 3 The second deambiguation method in the illustrated method embodiment realizes the time delay domain deambiguation.

[0537] As an optional implementation, the method further includes:

[0538] The second node detects the delay power spectra corresponding to the at least two transmitting antenna ports respectively according to the first guard interval in the delay domain or the first guard interval in the delay domain tap index;

[0539] The second node detects the Doppler power spectra corresponding to the at least two transmitting antenna ports respectively according to the Doppler domain first guard interval or the Doppler domain tap index first guard interval;

[0540] The second node determines a target Doppler tap index according to the Doppler power spectra corresponding to the at least two transmit antenna ports, wherein the Doppler power corresponding to the target Doppler tap index corresponds to a signal energy peak of the first signal corresponding to the at least two transmit antenna ports;

[0541] A Doppler peak value of the first signal is determined according to the target Doppler tap index.

[0542] In this implementation, the second node may adopt Figure 3 The second deambiguation method in the illustrated method embodiment implements Doppler domain deambiguation.

[0543] As an optional implementation manner, the resource set corresponding to the first signal is repeatedly sent at least twice in at least one of the time domain and the frequency domain, and the phase rotation parameter used by the resource set repeatedly sent for the i-th time is different from the phase rotation parameter used by the resource set repeatedly sent for the j-th time;

[0544] Wherein, i is not equal to j, and the phase rotation parameter includes at least one of the following:

[0545] a first phase rotation factor or a first phase difference;

[0546] A second phase rotation factor or a second phase difference.

[0547] Optionally, the method further comprises:

[0548] The second node acquires at least two delay power spectra, at least two Doppler power spectra, or at least two delay-Doppler power spectra according to a resource set of the first signal repeatedly sent at least twice in at least one of the time domain and the frequency domain;

[0549] The second node deambiguates the first signal according to the at least two delay power spectra, the at least two Doppler power spectra or the at least two delay-Doppler power spectra.

[0550] In this implementation, the second node may adopt Figure 3 The defuzzification method three in the illustrated method embodiment realizes transform domain defuzzification.

[0551] In order to facilitate understanding of the interaction process between each node or device in the MIMO sensing method provided in the embodiment of the present application, the interaction process between the first node, the second node and the first device in the embodiment of the present application is illustrated by taking the following interaction process as an example:

[0552] Step 1: The first node and / or the first device obtains second information.

[0553] Optionally, the first node and / or the first device obtains third information.

[0554] The specific meanings of the second information and the third information can be referred to as follows: Figure 3 The relevant explanations in the illustrated method embodiment will not be repeated here.

[0555] Step 2: The first node and / or the first device determines first information based on at least one of the acquired second information and third information, where the first information is used for MIMO awareness configuration of the first node and the second node.

[0556] The specific meaning of the first information can be referred to as follows: Figure 3 The relevant explanations in the illustrated method embodiment will not be repeated here.

[0557] Step 3: The second node obtains the first information.

[0558] Optionally, the second node obtains the first configuration information.

[0559] The specific meaning of the first configuration information can be referred to as follows Figure 3 The relevant explanations in the illustrated method embodiment will not be repeated here.

[0560] In this step, the transmission path of the first information may include at least one of the following:

[0561] Sent by the first node to the second node;

[0562] Sent by the first node to the first device, and sent by the first device to the second node;

[0563] Sent by the first device to the second node.

[0564] Step 4: The first node sends a first signal. The second node receives the first signal, and obtains at least one of a perception measurement value, a perception performance evaluation index measurement value, and a perception result based on the received first signal.

[0565] Optionally, the second node sends at least one of the perception measurement value, the perception performance evaluation index measurement value, and the perception result.

[0566] Step 5. Optionally, the first node and / or the first device updates the first information based on at least one of the acquired perception measurement value, the perception performance evaluation index measurement value, and the perception result, and the first node and the second node re-execute steps 3 and 4 according to the updated first information.

[0567] The MIMO sensing method provided in the embodiment of the present application may be performed by a MIMO sensing device. The MIMO sensing method performed by a MIMO sensing device is taken as an example to illustrate the MIMO sensing device provided in the embodiment of the present application.

[0568] Reference Fig.11 The embodiment of the present application also provides a MIMO sensing device, which is applied to a first node, such as Fig.11 As shown, the MIMO sensing device 1100 includes:

[0569] A first acquisition module 1101 is used to acquire first information, wherein the first information is configuration information of a first signal;

[0570] The first transmitting module 1102 is configured to transmit the first signal through at least two transmitting antenna ports, wherein the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

[0571] Optionally, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0572] Optionally, the first information includes at least one of the following:

[0573] first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0574] a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain;

[0575] A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0576] a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain;

[0577] a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0578] resource set indication information, used to indicate resource set division status of at least one transmit antenna port of the first node;

[0579] first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0580] Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0581] third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0582] Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0583] First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

[0584] Optionally, the first information further includes at least one of the following:

[0585] A first guard interval in the delay domain, indicating a minimum guard interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0586] A first Doppler domain protection interval, indicating a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0587] A first delay-Doppler domain guard interval, indicating a minimum guard interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0588] A first guard interval of a delay domain tap index indicates a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0589] A Doppler domain tap index first protection interval, indicating a minimum difference in indexes of DFT signal taps in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0590] A first guard interval of a delay-Doppler domain tap index indicates a minimum difference in indexes of DFT signal taps in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0591] fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0592] Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0593] seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0594] eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0595] Ninth association information, used to indicate the association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0596] The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

[0597] Optionally, the first information further includes at least one of the following:

[0598] The second indication information is used to indicate information related to delay domain deambiguation;

[0599] The third indication information is used to indicate information related to Doppler domain deambiguation;

[0600] Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0601] The number of times the resource collection is sent repeatedly.

[0602] Optionally, the first acquisition module 1101 is specifically used for:

[0603] receiving first information from a first device, wherein the first device includes a core network element for a first service, and the first service is a service corresponding to MIMO perception; or,

[0604] Acquire at least one of second information and third information, wherein the second information indicates information related to a sensing capability of a second node for receiving the first signal; and the third information indicates information related to the first service;

[0605] The first information is determined according to at least one of the second information and the third information.

[0606] Optionally, the MIMO sensing device 1100 further includes:

[0607] The first sending module is used to send the first information to the second node.

[0608] Optionally, the second information includes at least one of the following:

[0609] Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0610] first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0611] hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information;

[0612] Fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0613] A second guard interval in the delay domain, indicating a minimum guard interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0614] A second Doppler domain protection interval, indicating a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0615] A second delay-Doppler domain guard interval, indicating a minimum guard interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0616] A delay domain tap index second protection interval, indicating a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0617] A Doppler domain tap index second protection interval, indicating a minimum difference in indexes of DFT signal taps in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0618] The delay-Doppler domain tap index second protection interval indicates the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0619] Optionally, the second indication information includes at least one of the following:

[0620] Information on the type of time-delay domain defuzzification method;

[0621] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0622] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

[0623] Optionally, the third indication information includes at least one of the following:

[0624] Doppler domain deambiguation method type information;

[0625] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0626] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

[0627] Optionally, the fourth indication information includes at least one of the following:

[0628] Information on the type of delay-Doppler domain deambiguation method;

[0629] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0630] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0631] Optionally, the resource set corresponding to the first signal is repeatedly sent at least twice in the time domain, and a phase rotation parameter used by the resource set repeatedly sent for the i-th time is different from a phase rotation parameter used by the resource set repeatedly sent for the j-th time;

[0632] Wherein, i is not equal to j, and the phase rotation parameter includes at least one of the following:

[0633] a first phase rotation factor or a first phase difference;

[0634] A second phase rotation factor or a second phase difference.

[0635] Optionally, the MIMO sensing device 1100 further includes:

[0636] The first receiving module is used to receive sixth information from the second node, where the sixth information is determined based on MIMO perception of the first signal, and the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0637] Optionally, the MIMO sensing device 1100 further includes:

[0638] An updating module, configured to update the first information according to the sixth information;

[0639] The second transmitting module is used to transmit an updated first signal through at least two transmitting antenna ports according to the updated first information.

[0640] Optionally, the third information includes at least one of the following:

[0641] Quality of service (QoS) information of the first service;

[0642] first a priori information, wherein the first a priori information includes a priori information related to the first service;

[0643] A historical perception measurement value of the first service;

[0644] The historical perception result of the first service;

[0645] A historical perception performance evaluation index of the first service;

[0646] communication QoS information related to the first signal;

[0647] second configuration information, where the second configuration information is used to configure communication parameters of the first signal;

[0648] The fifth information includes at least one of the following:

[0649] A first identifier, wherein the first identifier is used to identify a sensing area;

[0650] a second identifier, where the second identifier is used to identify the first service, or a type of the first service, or whether the first service is used for sensing;

[0651] A third identifier, wherein the third identifier is used to identify a sensing target;

[0652] a fourth identifier, the fourth identifier being used to identify a perception measurement quantity;

[0653] a fifth identifier, where the fifth identifier is used to identify a device participating in the perception measurement;

[0654] Time domain resource information;

[0655] Frequency domain resource information.

[0656] Optionally, when the first information includes the first sequence information, and the first phase rotation factor or the first phase difference, the first transmitting module 1102 is specifically configured to:

[0657] Determine, according to the first sequence information, a first sequence mapped on at least one resource set by a first signal transmitted by at least two transmit antenna ports of the first node;

[0658] Performing a first operation on the sequence elements mapped by the first signal on at least two resource sets in the frequency domain, respectively, so that the ratio of the first difference to the first interval is equal to the first phase rotation factor; or, making the difference of the phase values ​​rotated as a whole by the sequence elements on two adjacent resource sets in the frequency domain equal to the first phase difference, wherein the first difference is the difference of the phase values ​​rotated by the sequence elements on any two different resource sets in the frequency domain, and the first interval is the frequency domain interval between any two different resource sets in the frequency domain;

[0659] The first operation is a phase rotation operation.

[0660] Optionally, when the first information includes the first sequence information, and the second phase rotation factor or the second phase difference, the first transmitting module 1102 is specifically configured to:

[0661] Determine, according to the first sequence information, a first sequence to which a first signal transmitted by at least two transmit antenna ports of the first node is mapped on at least two resource sets;

[0662] Performing a second operation on the sequence elements mapped by the first signal on at least two resource sets in the time domain, respectively, so that the ratio of the second difference to the second interval is equal to the second phase rotation factor; or, making the difference in the phase values ​​of the sequence elements on two adjacent resource sets in the time domain rotated as a whole equal to the second phase difference; wherein the second difference is the difference in the phase values ​​of the sequence elements on any two different resource sets in the time domain rotated as a whole, and the second interval is the time domain interval of any two different resource sets in the time domain;

[0663] The second operation is a phase rotation operation.

[0664] Optionally, the first indication information includes at least one of the following:

[0665] at least one row or one column of the precoding matrix, or the precoding vector;

[0666] an index of the precoding matrix or the precoding vector, wherein the first node pre-stores association information of the precoding matrix or the precoding vector and the respective indexes;

[0667] The type information of the precoding matrix or the precoding vector is used to indicate that the precoding matrix or the precoding vector acts on at least one of the frequency domain, the time domain, and the time-frequency domain.

[0668] Optionally, the first signals transmitted by different transmitting antenna ports have different intervals in at least one of a delay domain and a Doppler domain, and at least one of the following conditions is satisfied:

[0669] The interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the delay domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the tap index of the delay domain;

[0670] The interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval in the Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval of the tap index in the Doppler domain;

[0671] The interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the delay Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the tap index of the delay Doppler domain.

[0672] The MIMO sensing device provided in the embodiment of the present application can achieve Figure 3 The various processes implemented by the first node in the method embodiment shown achieve the same technical effect, and will not be described again here to avoid repetition.

[0673] Reference Fig.12 The embodiment of the present application also provides a MIMO sensing device, which is applied to the second node. Fig.12 As shown, the MIMO sensing device 1200 includes:

[0674] The second acquisition module 1201 is used to acquire first information, wherein the first information is configuration information of the first signal;

[0675] The first perception module 1202 is used to perform MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0676] Optionally, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0677] Optionally, the first information includes at least one of the following:

[0678] first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0679] a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain;

[0680] A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0681] a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain;

[0682] a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0683] The indication information of the resource set is used to indicate the resource set division status of at least one transmit antenna port of the first node, wherein the time-frequency resources in the same resource set use the same first phase rotation factor or the first phase difference, or use the same second phase rotation factor or the second phase difference;

[0684] first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0685] Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0686] third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0687] Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0688] The first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

[0689] Optionally, the first information further includes at least one of the following:

[0690] A first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0691] A first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0692] a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0693] A first guard interval of a delay domain tap index, where the first guard interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0694] A first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0695] A first guard interval of a delay-Doppler domain tap index, where the first guard interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0696] fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0697] Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0698] seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0699] eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0700] Ninth association information, used to indicate the association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0701] The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

[0702] Optionally, the first information further includes at least one of the following:

[0703] The second indication information is used to indicate information related to delay domain deambiguation;

[0704] The third indication information is used to indicate information related to Doppler domain deambiguation;

[0705] Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0706] The number of times the resource collection is sent repeatedly.

[0707] Optionally, the second acquisition module 1201 is specifically used for:

[0708] Receive first information from at least one of a first device and a first node, wherein the first device includes a core network element for a first service, the first service is a service corresponding to MIMO perception, and the first node includes a sending end device of the first signal.

[0709] Optionally, the MIMO sensing device 1200 further includes:

[0710] The second sending module is used to send second information to at least one of the first device and the first node, where the second information indicates information related to the perception capability of the second node used to receive the first signal.

[0711] Optionally, the second information includes at least one of the following:

[0712] Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0713] first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0714] hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information;

[0715] Fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0716] A second guard interval in the delay domain, indicating a minimum guard interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0717] A second Doppler domain protection interval, indicating a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0718] A second delay-Doppler domain guard interval, indicating a minimum guard interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0719] A delay domain tap index second protection interval, indicating a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0720] A Doppler domain tap index second protection interval, indicating a minimum difference in indexes of DFT signal taps in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0721] The delay-Doppler domain tap index second protection interval indicates the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0722] Optionally, the second indication information includes at least one of the following:

[0723] Information on the type of time-delay domain defuzzification method;

[0724] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0725] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

[0726] Optionally, the third indication information includes at least one of the following:

[0727] Doppler domain deambiguation method type information;

[0728] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0729] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

[0730] Optionally, the fourth indication information includes at least one of the following:

[0731] Information on the type of delay-Doppler domain deambiguation method;

[0732] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0733] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0734] Optionally, the MIMO sensing device 1200 further includes:

[0735] The third sending module is used to send the sixth information to at least one of the first node and the first device.

[0736] Optionally, the MIMO sensing device 1200 further includes:

[0737] A second receiving module, configured to receive the updated first information from at least one of the first node and the first device;

[0738] The second perception module is used to perform MIMO perception on the updated first signal according to the updated first information to obtain updated sixth information.

[0739] Optionally, the first perception module 1202 is specifically configured to:

[0740] Separating the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference;

[0741] Perceptual measurement is performed on the first signal transmitted by at least two transmitting antenna ports separated in the delay domain to obtain sixth information.

[0742] Optionally, the first perception module 1202 is specifically configured to:

[0743] Separating the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference;

[0744] Perception measurement is performed on the first signals transmitted by at least two transmitting antenna ports separated in the Doppler domain respectively to obtain sixth information.

[0745] Optionally, the first perception module 1202 is specifically configured to:

[0746] Separating the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference;

[0747] Separating the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference;

[0748] The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the delay-Doppler domain to obtain sixth information.

[0749] The MIMO sensing device provided in the embodiment of the present application can achieve Fig.10 The various processes implemented by the second node in the method embodiment shown achieve the same technical effect, and will not be described again here to avoid repetition.

[0750] Alternatively, if Fig.13 As shown, the embodiment of the present application further provides a communication device 1300, including a processor 1301 and a memory 1302, the memory 1302 stores a program or instruction that can be run on the processor 1301, for example: when the communication device 1300 acts as a first node, the program or instruction is executed by the processor 1301 to implement the following Figure 3 The steps of the method embodiment shown in the figure can achieve the same technical effect; when the communication device 1300 acts as a second node, the program or instruction is executed by the processor 1301 to implement the following Fig.10 The steps of the method embodiment shown in the figure can achieve the same technical effect, and to avoid repetition, they are not described here. Specifically, Fig.14 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0751] The terminal 1400 includes but is not limited to: a radio frequency unit 1401, a network module 1402, an audio output unit 1403, an input unit 1404, a sensor 1405, a display unit 1406, a user input unit 1407, an interface unit 1408, a memory 1409 and at least some of the components of the processor 1410.

[0752] Those skilled in the art will appreciate that the terminal 1400 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1410 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.14 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0753] It should be understood that in the embodiment of the present application, the input unit 1404 may include a graphics processor (Graphics Processing Unit, GPU) 14041 and a microphone 14042, and the graphics processor 14041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1406 may include a display panel 14061, and the display panel 14061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1407 includes a touch panel 14071 and at least one of other input devices 14072. The touch panel 14071 is also called a touch screen. The touch panel 14071 may include two parts: a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0754] In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1401 can transmit the data to the processor 1410 for processing; in addition, the radio frequency unit 1401 can send uplink data to the network side device. Generally, the radio frequency unit 1401 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0755] The memory 1409 can be used to store software programs or instructions and various data. The memory 1409 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1409 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1409 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0756] The processor 1410 may include one or more processing units; optionally, the processor 1410 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1410.

[0757] In one implementation, the terminal 1400 serves as the first node.

[0758] At this time, the radio frequency unit 1401 is used to obtain first information, where the first information is configuration information of the first signal;

[0759] The radio frequency unit 1401 is further configured to transmit the first signal through at least two transmitting antenna ports, wherein the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

[0760] Optionally, the first information includes at least one of the following:

[0761] first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0762] a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain;

[0763] A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0764] a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain;

[0765] a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0766] resource set indication information, used to indicate resource set division status of at least one transmit antenna port of the first node;

[0767] first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0768] Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0769] third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0770] Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0771] First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

[0772] Optionally, the first information further includes at least one of the following:

[0773] A first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0774] A first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0775] a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0776] A first guard interval of a delay domain tap index, where the first guard interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0777] A first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0778] A first guard interval of a delay-Doppler domain tap index, where the first guard interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0779] fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0780] Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0781] seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0782] eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0783] Ninth association information, used to indicate an association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0784] The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

[0785] Optionally, the first information further includes at least one of the following:

[0786] The second indication information is used to indicate information related to delay domain deambiguation;

[0787] The third indication information is used to indicate information related to Doppler domain deambiguation;

[0788] Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0789] The number of times the resource collection is sent repeatedly.

[0790] Optionally, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0791] Optionally, the obtaining of the first information performed by the radio frequency unit 1401 includes:

[0792] receiving first information from a first device, wherein the first device includes a core network element for a first service, and the first service is a service corresponding to MIMO perception; or,

[0793] Acquire at least one of second information and third information, wherein the second information indicates information related to a sensing capability of a second node for receiving the first signal; and the third information indicates information related to the first service;

[0794] The first information is determined by the processor 1410 according to at least one of the second information and the third information.

[0795] Optionally, the radio frequency unit 1401 is further configured to send the first information to the second node.

[0796] Optionally, the second information includes at least one of the following:

[0797] Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0798] first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0799] hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information;

[0800] Fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0801] A second protection interval in the delay domain, where the second protection interval in the delay domain is a minimum protection interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0802] A second Doppler domain protection interval, where the second Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0803] a second protection interval in the delay-Doppler domain, where the second protection interval in the delay-Doppler domain is a minimum protection interval in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0804] A delay domain tap indexed second guard interval, where the delay domain tap indexed second guard interval is a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0805] A second guard interval of a Doppler domain tap index, where the second guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0806] The delay-Doppler domain tap index second protection interval is the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0807] Optionally, the second indication information includes at least one of the following:

[0808] Information on the type of time-delay domain defuzzification method;

[0809] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0810] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

[0811] Optionally, the third indication information includes at least one of the following:

[0812] Doppler domain deambiguation method type information;

[0813] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0814] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

[0815] Optionally, the fourth indication information includes at least one of the following:

[0816] Information on the type of delay-Doppler domain deambiguation method;

[0817] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0818] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0819] Optionally, the resource set corresponding to the first signal is repeatedly sent at least twice in the time domain, and a phase rotation parameter used by the resource set repeatedly sent for the i-th time is different from a phase rotation parameter used by the resource set repeatedly sent for the j-th time;

[0820] Wherein, i is not equal to j, and the phase rotation parameter includes at least one of the following:

[0821] a first phase rotation factor or a first phase difference;

[0822] A second phase rotation factor or a second phase difference.

[0823] Optionally, the radio frequency unit 1401 is also used to receive sixth information from the second node, where the sixth information is determined based on MIMO perception of the first signal, and the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0824] Optionally, the processor 1410 is configured to update the first information according to the sixth information;

[0825] The radio frequency unit 1401 is further configured to transmit an updated first signal through at least two transmitting antenna ports according to the updated first information.

[0826] Optionally, the third information includes at least one of the following:

[0827] Quality of service (QoS) information of the first service;

[0828] first a priori information, wherein the first a priori information includes a priori information related to the first service;

[0829] A historical perception measurement value of the first service;

[0830] The historical perception result of the first service;

[0831] A historical perception performance evaluation index of the first service;

[0832] communication QoS information related to the first signal;

[0833] second configuration information, where the second configuration information is used to configure communication parameters of the first signal;

[0834] The fifth information includes at least one of the following:

[0835] A first identifier, wherein the first identifier is used to identify a sensing area;

[0836] a second identifier, where the second identifier is used to identify the first service, or a type of the first service, or whether the first service is used for sensing;

[0837] A third identifier, wherein the third identifier is used to identify a sensing target;

[0838] a fourth identifier, the fourth identifier being used to identify a perception measurement quantity;

[0839] a fifth identifier, where the fifth identifier is used to identify a device participating in the perception measurement;

[0840] Time domain resource information;

[0841] Frequency domain resource information.

[0842] Optionally, when the first information includes the first sequence information, and the first phase rotation factor or the first phase difference, the transmitting of the first signal through at least two transmitting antenna ports performed by the radio frequency unit 1401 includes:

[0843] Determine, according to the first sequence information, a first sequence mapped on at least one resource set by a first signal transmitted by at least two transmit antenna ports of the first node;

[0844] Performing a first operation on the sequence elements mapped by the first signal on at least two resource sets in the frequency domain, respectively, so that the ratio of the first difference to the first interval is equal to the first phase rotation factor; or, making the difference of the phase values ​​rotated as a whole by the sequence elements on two adjacent resource sets in the frequency domain equal to the first phase difference, wherein the first difference is the difference of the phase values ​​rotated by the sequence elements on any two different resource sets in the frequency domain, and the first interval is the frequency domain interval between any two different resource sets in the frequency domain;

[0845] The first operation is a phase rotation operation.

[0846] Optionally, when the first information includes the first sequence information, and the second phase rotation factor or the second phase difference, the transmitting of the first signal through at least two transmitting antenna ports performed by the radio frequency unit 1401 includes:

[0847] Determine, according to the first sequence information, a first sequence to which a first signal transmitted by at least two transmit antenna ports of the first node is mapped on at least two resource sets;

[0848] Performing a second operation on the sequence elements mapped by the first signal on at least two resource sets in the time domain, respectively, so that the ratio of the second difference to the second interval is equal to the second phase rotation factor; or, making the difference in the phase values ​​of the sequence elements on two adjacent resource sets in the time domain rotated as a whole equal to the second phase difference; wherein the second difference is the difference in the phase values ​​of the sequence elements on any two different resource sets in the time domain rotated as a whole, and the second interval is the time domain interval of any two different resource sets in the time domain;

[0849] The second operation is a phase rotation operation.

[0850] Optionally, the first indication information includes at least one of the following:

[0851] at least one row or one column of the precoding matrix, or the precoding vector;

[0852] an index of the precoding matrix or the precoding vector, wherein the first node pre-stores association information of the precoding matrix or the precoding vector and the respective indexes;

[0853] The type information of the precoding matrix or the precoding vector is used to indicate that the precoding matrix or the precoding vector acts on at least one of the frequency domain, the time domain, and the time-frequency domain.

[0854] Optionally, the first signals transmitted by different transmitting antenna ports have different intervals in at least one of a delay domain and a Doppler domain, and at least one of the following conditions is satisfied:

[0855] The interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the delay domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the tap index of the delay domain;

[0856] The interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval in the Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval of the tap index in the Doppler domain;

[0857] The interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the delay Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the tap index of the delay Doppler domain.

[0858] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the following Figure 3 The relevant descriptions of the method embodiments shown in the figure achieve the same or corresponding technical effects, and will not be repeated here to avoid repetition.

[0859] In another implementation, the terminal 1400 serves as the second node.

[0860] At this time, the radio frequency unit 1401 is used to obtain first information, where the first information is configuration information of the first signal;

[0861] The radio frequency unit 1401 is also used to perform MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

[0862] Optionally, the first information includes at least one of the following:

[0863] first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal;

[0864] a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain;

[0865] A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain;

[0866] a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain;

[0867] a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain;

[0868] The indication information of the resource set is used to indicate the resource set division status of at least one transmit antenna port of the first node, wherein the time-frequency resources in the same resource set use the same first phase rotation factor or the first phase difference, or use the same second phase rotation factor or the second phase difference;

[0869] first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node;

[0870] Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node;

[0871] third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal;

[0872] Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information;

[0873] First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

[0874] Optionally, the first information further includes at least one of the following:

[0875] A first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0876] A first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0877] a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0878] A first guard interval of a delay domain tap index, where the first guard interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0879] A first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0880] A first guard interval of a delay-Doppler domain tap index, where the first guard interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain;

[0881] fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node;

[0882] Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node;

[0883] seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node;

[0884] eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node;

[0885] Ninth association information, used to indicate an association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node;

[0886] The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

[0887] Optionally, the first information further includes at least one of the following:

[0888] The second indication information is used to indicate information related to delay domain deambiguation;

[0889] The third indication information is used to indicate information related to Doppler domain deambiguation;

[0890] Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation;

[0891] The number of times the resource collection is sent repeatedly.

[0892] Optionally, the first information is also used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

[0893] Optionally, the acquiring of the first information performed by the radio frequency unit 1401 includes:

[0894] Receive first information from at least one of a first device and a first node, wherein the first device includes a core network element for a first service, the first service is a service corresponding to MIMO perception, and the first node includes a sending end device of the first signal.

[0895] Optionally, before executing the receiving of the first information from the first node, the radio frequency unit 1401 is further used to send second information to at least one of the first device and the first node, wherein the second information indicates information related to the perception capability of the second node used to receive the first signal.

[0896] Optionally, the second information includes at least one of the following:

[0897] Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain;

[0898] first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources;

[0899] hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information;

[0900] Fourth information, where the fourth information indicates at least one of the following information recommended by the second node:

[0901] A second protection interval in the delay domain, where the second protection interval in the delay domain is a minimum protection interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0902] A second Doppler domain protection interval, where the second Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0903] a second protection interval in the delay-Doppler domain, where the second protection interval in the delay-Doppler domain is a minimum protection interval in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node;

[0904] A delay domain tap indexed second guard interval, where the delay domain tap indexed second guard interval is a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain;

[0905] A second guard interval of a Doppler domain tap index, where the second guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain;

[0906] The delay-Doppler domain tap index second protection interval is the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

[0907] Optionally, the second indication information includes at least one of the following:

[0908] Information on the type of time-delay domain defuzzification method;

[0909] First threshold information, the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type;

[0910] The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

[0911] Optionally, the third indication information includes at least one of the following:

[0912] Doppler domain deambiguation method type information;

[0913] Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type;

[0914] The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

[0915] Optionally, the fourth indication information includes at least one of the following:

[0916] Information on the type of delay-Doppler domain deambiguation method;

[0917] The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type;

[0918] The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

[0919] Optionally, the radio frequency unit 1401 is further used to send the sixth information to at least one of the first node and the first device.

[0920] Optionally, the radio frequency unit 1401 is further configured to:

[0921] receiving updated first information from at least one of the first node and the first device;

[0922] According to the updated first information, MIMO sensing is performed on the updated first signal to obtain updated sixth information.

[0923] Optionally, the RF unit 1401 performs MIMO sensing on the first signal to obtain sixth information, including:

[0924] Separating the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference;

[0925] Perceptual measurement is performed on the first signal transmitted by at least two transmitting antenna ports separated in the delay domain to obtain sixth information.

[0926] Optionally, the RF unit 1401 performs MIMO sensing on the first signal to obtain sixth information, including:

[0927] Separating the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference;

[0928] Perception measurement is performed on the first signals transmitted by at least two transmitting antenna ports separated in the Doppler domain respectively to obtain sixth information.

[0929] Optionally, the RF unit 1401 performs MIMO sensing on the first signal to obtain sixth information, including:

[0930] Separating the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference;

[0931] Separating the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference;

[0932] Perception measurement is performed on the first signals transmitted by at least two transmitting antenna ports separated in the delay-Doppler domain respectively to obtain sixth information.

[0933] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the following Fig.10 The relevant descriptions of the method embodiments shown in the figure achieve the same or corresponding technical effects, and will not be repeated here to avoid repetition.

[0934] The present application embodiment also provides a network side device. Fig.15 As shown, the network side device 1500 includes: a processor 1501, a network interface 1502 and a memory 1503. The network interface 1502 is, for example, a Common Public Radio Interface (CPRI).

[0935] Specifically, the network side device 1500 of the embodiment of the present application further includes: instructions or programs stored in the memory 1503 and executable on the processor 1501, and the processor 1501 calls the instructions or programs in the memory 1503 to execute as follows: Fig.11 or Fig.12 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0936] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the following is implemented: Figure 3 or Fig.10 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0937] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0938] The present application embodiment further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or instruction, to implement the following Figure 3 or Fig.10 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0939] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0940] The present application embodiment further provides a computer program / program product, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the following Figure 3 or Fig.10 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0941] The embodiment of the present application further provides a wireless communication system, including a first node and a second node, wherein the first node is configured to execute the following Figure 3 The steps of the method embodiment shown in the figure, the second node is used to perform the following steps: Fig.10 The steps of the method embodiment shown in the figure can achieve the same technical effect, and to avoid repetition, they will not be described again here.

[0942] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0943] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0944] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A multiple-input multiple-output MIMO sensing method, characterized in that: include: The first node acquires first information, wherein the first information is configuration information of the first signal; The first node transmits the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

2. The method according to claim 1, characterized in that The first information includes at least one of the following: first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal; a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain; A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain; a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain; a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain; resource set indication information, used to indicate resource set division status of at least one transmit antenna port of the first node; first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node; Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node; third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal; Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information; First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

3. The method according to claim 1 or 2, characterized in that: The first information also includes at least one of the following: A first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain; A first guard interval of a delay domain tap index, where the first guard interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain; A first guard interval of a delay-Doppler domain tap index, where the first guard interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain; fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node; Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node; seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node; eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node; Ninth association information, used to indicate an association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node; The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

4. The method according to any one of claims 1 to 3, characterized in that The first information also includes at least one of the following: The second indication information is used to indicate information related to delay domain deambiguation; The third indication information is used to indicate information related to Doppler domain deambiguation; Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation; The number of times the resource collection is sent repeatedly.

5. The method according to any one of claims 1 to 4, characterized in that The first information is further used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

6. The method according to any one of claims 1 to 5, characterized in that The first node acquires first information, including: The first node receives first information from a first device, wherein the first device includes a core network element for a first service, and the first service is a service corresponding to MIMO perception; or, The first node acquires at least one of second information and third information, wherein the second information indicates information related to a sensing capability of a second node for receiving the first signal; and the third information indicates information related to the first service; The first node determines the first information according to at least one of the second information and the third information.

7. The method according to claim 6, characterized in that The method further comprises: The first node sends the first information to the second node.

8. The method according to claim 6, characterized in that The second information includes at least one of the following: Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain; first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources; hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information; Fourth information, where the fourth information indicates at least one of the following information recommended by the second node: A second protection interval in the delay domain, where the second protection interval in the delay domain is a minimum protection interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node; A second Doppler domain protection interval, where the second Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; a second protection interval in the delay-Doppler domain, where the second protection interval in the delay-Doppler domain is a minimum protection interval in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; A delay domain tap indexed second guard interval, where the delay domain tap indexed second guard interval is a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A second guard interval of a Doppler domain tap index, where the second guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain; The second guard interval of the delay-Doppler domain tap index is the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

9. The method according to any one of claims 4 to 8, characterized in that The second indication information includes at least one of the following: Information on the type of time-delay domain defuzzification method; First threshold information, where the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type; The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

10. The method according to any one of claims 4 to 9, characterized in that The third indication information includes at least one of the following: Doppler domain deambiguation method type information; Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type; The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

11. The method according to any one of claims 4 to 10, characterized in that The fourth indication information includes at least one of the following: Information on the type of delay-Doppler domain deambiguation method; The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type; The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

12. The method according to any one of claims 4 to 11, characterized in that The resource set corresponding to the first signal is repeatedly sent at least twice in the time domain, and the phase rotation parameter used by the resource set repeatedly sent for the i-th time is different from the phase rotation parameter used by the resource set repeatedly sent for the j-th time; Wherein, i is not equal to j, and the phase rotation parameter includes at least one of the following: a first phase rotation factor or a first phase difference; A second phase rotation factor or a second phase difference.

13. The method according to any one of claims 1 to 12, characterized in that The method further comprises: The first node receives sixth information from the second node, where the sixth information is determined based on MIMO perception of the first signal, and the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

14. The method according to claim 13, characterized in that The method further comprises: The first node updates the first information according to the sixth information; The first node transmits an updated first signal through at least two transmitting antenna ports according to the updated first information.

15. The method according to claim 6, characterized in that The third information includes at least one of the following: Quality of service (QoS) information of the first service; first a priori information, wherein the first a priori information includes a priori information related to the first service; A historical perception measurement value of the first service; The historical perception result of the first service; A historical perception performance evaluation index of the first service; communication QoS information related to the first signal; second configuration information, where the second configuration information is used to configure communication parameters of the first signal; The fifth information includes at least one of the following: A first identifier, wherein the first identifier is used to identify a sensing area; a second identifier, where the second identifier is used to identify the first service, or a type of the first service, or whether the first service is used for sensing; A third identifier, wherein the third identifier is used to identify a sensing target; a fourth identifier, the fourth identifier being used to identify a perception measurement quantity; a fifth identifier, where the fifth identifier is used to identify a device participating in the perception measurement; Time domain resource information; Frequency domain resource information.

16. The method according to any one of claims 2 to 15, characterized in that In a case where the first information includes the first sequence information, and the first phase rotation factor or the first phase difference, the first node transmits a first signal through at least two transmitting antenna ports, including: The first node determines, according to the first sequence information, a first sequence mapped on at least one resource set by a first signal transmitted by at least two transmit antenna ports of the first node; The first node performs a first operation on the sequence elements mapped by the first signal on at least two resource sets in the frequency domain, respectively, so that the ratio of the first difference to the first interval is equal to the first phase rotation factor; or, the difference of the phase values ​​of the sequence elements on two adjacent resource sets in the frequency domain rotated as a whole is equal to the first phase difference, wherein the first difference is the difference of the phase values ​​of the sequence elements on any two different resource sets in the frequency domain, and the first interval is the frequency domain interval of any two different resource sets in the frequency domain; The first operation is a phase rotation operation.

17. The method according to any one of claims 2 to 16, characterized in that In a case where the first information includes the first sequence information, and the second phase rotation factor or the second phase difference, the first node transmits a first signal through at least two transmitting antenna ports, including: The first node determines, according to the first sequence information, a first sequence mapped on at least two resource sets by a first signal transmitted by at least two transmit antenna ports of the first node; The first node performs a second operation on the sequence elements mapped by the first signal on at least two resource sets in the time domain, respectively, so that the ratio of the second difference to the second interval is equal to the second phase rotation factor; or, so that the difference in the phase values ​​of the sequence elements on two adjacent resource sets in the time domain are rotated as a whole is equal to the second phase difference; wherein the second difference is the difference in the phase values ​​of the sequence elements on any two different resource sets in the time domain, and the second interval is the time domain interval of any two different resource sets in the time domain; The second operation is a phase rotation operation.

18. The method according to any one of claims 2 to 17, characterized in that The first indication information includes at least one of the following: at least one row or one column of the precoding matrix, or the precoding vector; an index of the precoding matrix or the precoding vector, wherein the first node pre-stores association information of the precoding matrix or the precoding vector and the respective indexes; The type information of the precoding matrix or the precoding vector is used to indicate that the precoding matrix or the precoding vector acts on at least one of the frequency domain, the time domain, and the time-frequency domain.

19. The method according to any one of claims 3 to 18, characterized in that The first signals transmitted by different transmitting antenna ports have different intervals in at least one of the delay domain and the Doppler domain, and satisfy at least one of the following conditions: The interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the delay domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay domain is greater than or equal to the first protection interval of the tap index of the delay domain; The interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval in the Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the Doppler domain is greater than or equal to the first protection interval of the tap index in the Doppler domain; The interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the delay Doppler domain; or, the tap index interval of the first signal transmitted by different transmitting antenna ports in the delay Doppler domain is greater than or equal to the first protection interval of the tap index of the delay Doppler domain.

20. A multiple-input multiple-output MIMO sensing method, characterized in that: include: The second node acquires first information, wherein the first information is configuration information of the first signal; The second node performs MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one domain of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

21. The method according to claim 20, characterized in that The first information includes at least one of the following: first sequence information, where the first sequence information is parameter information used to determine a first sequence, and the first sequence is a sending sequence used by the first signal; a first phase rotation factor, where the first phase rotation factor is a ratio of a first difference to a first interval, where the first difference is a difference in phase values ​​of sequence elements on any two different resource sets on the frequency domain corresponding to the first signal, and the first interval is a frequency domain interval between any two different resource sets on the frequency domain; A first phase difference, where the first phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets on the frequency domain rotated as a whole when the time-frequency resources mapped by the first signal are evenly distributed at equal intervals on the frequency domain; a second phase rotation factor, where the second phase rotation factor is a ratio of a second difference to a second interval, where the second difference is a difference in phase values ​​rotated by sequence elements on any two different resource sets in the time domain corresponding to the first signal, and the second interval is a time domain interval between any two different resource sets in the time domain; a second phase difference, where the second phase difference is a difference in phase values ​​of sequence elements on two adjacent resource sets in the time domain rotated as a whole when at least two resource sets mapped by the first signal are evenly distributed at equal intervals in the time domain; The indication information of the resource set is used to indicate the resource set division status of at least one transmit antenna port of the first node, wherein the time-frequency resources in the same resource set use the same first phase rotation factor or the first phase difference, or use the same second phase rotation factor or the second phase difference; first association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and a transmit antenna port index of the first node; Second association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and a transmit antenna port index of the first node; third association information, used to indicate an association relationship between the first phase rotation factor or the first phase difference and first configuration information, wherein the first configuration information is used to configure the first signal; Fourth association information, used to indicate an association relationship between the second phase rotation factor or the second phase difference and the first configuration information; First indication information, where the first indication information is used to indicate a precoding matrix or a precoding vector corresponding to at least one of the first phase rotation factor, the first phase difference, the second phase rotation factor, and the second phase difference.

22. The method according to claim 20 or 21, characterized in that The first information also includes at least one of the following: A first protection interval in the delay domain, where the first protection interval in the delay domain is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A first Doppler domain protection interval, where the first Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; a first delay-Doppler domain protection interval, where the first delay-Doppler domain protection interval is a minimum protection interval of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain; A first guard interval of a delay domain tap index, where the first guard interval of the delay domain tap index is a minimum difference between indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A first guard interval of a Doppler domain tap index, where the first guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain; A first guard interval of a delay-Doppler domain tap index, where the first guard interval of the delay-Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay-Doppler domain; fifth association information, used to indicate an association relationship between the first protection interval in the delay domain and the transmit antenna port index of the first node; Sixth association information, used to indicate an association relationship between the first protection interval in the Doppler domain and the transmit antenna port index of the first node; seventh association information, used to indicate an association relationship between the first guard interval in the delay-Doppler domain and the transmit antenna port index of the first node; eighth association information, used to indicate an association relationship between the delay domain tap index first protection interval and the transmit antenna port index of the first node; Ninth association information, used to indicate an association relationship between the first protection interval of the Doppler domain tap index and the transmit antenna port index of the first node; The tenth association information is used to indicate the association relationship between the first protection interval of the delay-Doppler domain tap index and the transmitting antenna port index of the first node.

23. The method according to any one of claims 20 to 22, characterized in that The first information also includes at least one of the following: The second indication information is used to indicate information related to delay domain deambiguation; The third indication information is used to indicate information related to Doppler domain deambiguation; Fourth indication information, used to indicate information related to delay-Doppler domain deambiguation; The number of times the resource collection is sent repeatedly.

24. The method according to any one of claims 20 to 23, characterized in that The first information is further used to deambiguate the first signal in at least one of a delay domain and a Doppler domain.

25. The method according to any one of claims 20 to 24, characterized in that The second node acquires the first information, including: The second node receives first information from at least one of a first device and a first node, wherein the first device includes a core network element for a first service, the first service is a service corresponding to MIMO perception, and the first node includes a sending end device of the first signal.

26. The method according to claim 25, characterized in that Before the second node receives the first information from the first node, the method further includes: The second node sends second information to at least one of the first device and the first node, where the second information indicates information related to the sensing capability of the second node for receiving the first signal.

27. The method according to claim 26, characterized in that The second information includes at least one of the following: Fifth indication information, the fifth indication information is used to indicate at least one of the following detection capabilities of the second node: a noise floor level NFL in a delay domain, an NFL in a Doppler domain, a detection dynamic range in a delay domain, and a detection dynamic range in a Doppler domain; first resource information, where the first resource information indicates at least one of the following resources of the second node that can be used for the first service: bandwidth resources, time resources, and antenna resources; hardware information of the second node, the hardware information comprising at least one of antenna port information and physical antenna information; Fourth information, where the fourth information indicates at least one of the following information recommended by the second node: A second protection interval in the delay domain, where the second protection interval in the delay domain is a minimum protection interval in the delay domain of the first signal transmitted by two transmitting antenna ports of the first node; A second Doppler domain protection interval, where the second Doppler domain protection interval is a minimum protection interval in the Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; a second protection interval in the delay-Doppler domain, where the second protection interval in the delay-Doppler domain is a minimum protection interval in the delay-Doppler domain of the first signal transmitted by two transmitting antenna ports of the first node; A delay domain tap indexed second guard interval, where the delay domain tap indexed second guard interval is a minimum difference in indexes of discrete Fourier transform DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the delay domain; A second guard interval of a Doppler domain tap index, where the second guard interval of the Doppler domain tap index is a minimum difference between indexes of DFT signal taps of the first signal transmitted by two transmitting antenna ports of the first node in the Doppler domain; The second guard interval of the delay-Doppler domain tap index is the minimum difference in the index of the DFT signal tap in the delay-Doppler domain of the first signal transmitted by the two transmitting antenna ports of the first node.

28. The method according to any one of claims 23 to 27, characterized in that The second indication information includes at least one of the following: Information on the type of time-delay domain defuzzification method; First threshold information, where the first threshold information is used for delay domain deambiguation, and the first threshold information includes: a first threshold value, and association information between the first threshold and a delay domain deambiguation method type; The delay domain detection interval information includes: the number of delay domain detection intervals, the size of the delay domain detection interval, and the position of at least one delay domain detection interval.

29. The method according to any one of claims 23 to 28, characterized in that The third indication information includes at least one of the following: Doppler domain deambiguation method type information; Second threshold information, where the second threshold information is used for Doppler domain deambiguation, and the second threshold information includes: a second threshold value, and association information between the second threshold and a Doppler domain deambiguation method type; The Doppler domain detection interval information includes: the number of Doppler domain detection intervals, the size of the Doppler domain detection interval, and the position of at least one Doppler domain detection interval.

30. The method according to any one of claims 23 to 29, characterized in that The fourth indication information includes at least one of the following: Information on the type of delay-Doppler domain deambiguation method; The third threshold information is used for delay-Doppler domain deambiguation, and the third threshold information includes: the third threshold value, and the association information between the third threshold and the delay-Doppler domain deambiguation method type; The delay-Doppler domain detection interval information includes: the number of delay-Doppler domain detection intervals, the size of the delay-Doppler domain detection intervals, the position of at least one delay-Doppler domain detection interval, and the shape indication of the delay-Doppler domain detection interval.

31. The method according to any one of claims 20 to 30, characterized in that The method further comprises: The second node sends the sixth information to at least one of the first node and the first device.

32. The method according to claim 31, characterized in that The method further comprises: The second node receives the updated first information from at least one of the first node and the first device; The second node performs MIMO sensing on the updated first signal according to the updated first information to obtain updated sixth information.

33. The method according to any one of claims 22 to 32, characterized in that The second node performs MIMO sensing on the first signal to obtain sixth information, including: The second node separates the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference; The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the delay domain to obtain sixth information.

34. The method according to any one of claims 22 to 32, characterized in that The second node performs MIMO sensing on the first signal to obtain sixth information, including: The second node separates the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference; The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the Doppler domain to obtain sixth information.

35. The method according to any one of claims 22 to 32, characterized in that The second node performs MIMO sensing on the first signal to obtain sixth information, including: The second node separates the first signals transmitted by different transmitting antenna ports in a delay domain according to the first phase rotation factor or the first phase difference; The second node separates the first signals transmitted by different transmitting antenna ports in the Doppler domain according to the second phase rotation factor or the second phase difference; The second node performs perception measurement on the first signal transmitted by at least two transmitting antenna ports separated in the delay-Doppler domain to obtain sixth information.

36. A multiple-input multiple-output MIMO sensing device, characterized in that: Applied to a first node, the device comprises: A first acquisition module, configured to acquire first information, wherein the first information is configuration information of a first signal; The first transmitting module is used to transmit the first signal through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of a delay domain and a Doppler domain.

37. A multiple-input multiple-output MIMO sensing device, characterized in that: Applied to a second node, the device comprises: A second acquisition module, configured to acquire first information, wherein the first information is configuration information of the first signal; The first perception module is used to perform MIMO perception on the first signal to obtain sixth information, wherein the first signal is transmitted through at least two transmitting antenna ports, and the first signals transmitted by different transmitting antenna ports are orthogonal in at least one of the delay domain and the Doppler domain; the sixth information includes at least one of the following: a perception measurement value, a perception performance evaluation index measurement value, and a perception result.

38. A communication device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the multi-input multi-output MIMO perception method as described in any one of claims 1 to 19, or implements the steps of the MIMO perception method as described in any one of claims 20 to 35.

39. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the multi-input multi-output MIMO perception method as described in any one of claims 1 to 19, or implements the steps of the MIMO perception method as described in any one of claims 20 to 35.

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