Sensing signal sending method and apparatus, sensing signal receiving method and apparatus, and device

Abstract

The present application relates to the technical field of communications, and discloses a sensing signal sending method and apparatus, a sensing signal receiving method and apparatus, and a device. The sensing signal sending method in embodiments of the present application comprises: a first device selects m antennas from N candidate antennas, N being an integer greater than 1, and m being an integer greater than 1 and less than or equal to N; and the first device sends a target signal to a second device by means of target antennas among the N candidate antennas, the target antennas comprising the m antennas, the target signal being used for sensing measurement, antenna indexes of the m antennas being used for index modulation, and the index modulation being used for transmitting first information to the second device.

Description

Perception signal sending method, receiving method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 1, 2023, with application number 202311643329.5 and invention name “Perception Signal Transmitting Method, Receiving Method, Device and Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a perception signal sending method, receiving method, device and equipment. Background Art

[0004] Some communication systems support perception measurement. In related technologies, perception measurement involves a device sending a signal for perception measurement, and the device performing the perception measurement performs the measurement based on the signal. This means that only perception measurement can be performed while the device is sending the signal, resulting in poor communication performance. Summary of the Invention

[0005] The embodiments of the present application provide a perception signal sending method, receiving method, apparatus and device, which can solve the problem of poor communication performance of the device.

[0006] In a first aspect, a method for sending a perception signal is provided, including:

[0007] The first device selects m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N;

[0008] The first device sends a target signal to the second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device.

[0009] In a second aspect, a method for receiving a perception signal is provided, comprising:

[0010] The second device receives a target signal sent by the first device through a target antenna, where the target antenna includes m antennas, and the target signal is used for sensing and measurement, where m is a positive integer;

[0011] The second device performs demodulation based on the antenna indexes of the m antennas to obtain information conveyed by the antenna indexes of the m antennas.

[0012] In a third aspect, a perception signal sending device is provided, including:

[0013] A selection module, configured to select m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N;

[0014] A first sending module is used to send a target signal to a second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device.

[0015] In a fourth aspect, a perception signal receiving device is provided, comprising:

[0016] A first receiving module is configured to receive a target signal sent by a first device through a target antenna, where the target antenna includes m antennas, and the target signal is used for sensing and measurement, where m is a positive integer;

[0017] The demodulation module is used to perform demodulation based on the antenna indexes of the m antennas to obtain information transmitted by the antenna indexes of the m antennas.

[0018] In a fifth aspect, a device is provided, which includes a processor and a memory, wherein 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, the steps of the perception signal sending method provided in the embodiment of the present application are implemented.

[0019] In a sixth aspect, a device is provided, comprising a processor and a communication interface, wherein the processor is used to select m antennas from N candidate antennas, N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N, and the communication interface is used to send a target signal to a second device through a target antenna among the N candidate antennas, the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna index of the m antennas is used for index modulation, and the index modulation is used to transmit first information to the second device.

[0020] In the seventh aspect, a device is provided, which includes a processor and a memory, wherein 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, the steps of the perception signal receiving method provided in the embodiment of the present application are implemented.

[0021] In the eighth aspect, a device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a target signal sent by a first device through a target antenna, the target antenna includes m antennas, the target signal is used for perception measurement, m is a positive integer, and the processor is used to demodulate based on the antenna index of the m antennas to obtain information transmitted by the antenna index of the m antennas.

[0022] In a ninth 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 perception signal sending method provided in the embodiment of the present application are implemented, or the steps of the perception signal receiving method provided in the embodiment of the present application are implemented.

[0023] In the tenth aspect, a wireless communication system is provided, including: a first device and a second device, wherein the first device can be used to perform the steps of the perception signal sending method provided in the embodiment of the present application, and the second device can be used to perform the steps of the perception signal receiving method provided in the embodiment of the present application.

[0024] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, the communication interface being coupled to the processor, and the processor being used to run a program or instruction to implement a perception signal sending method as provided in an embodiment of the present application, or to implement a perception signal receiving method as provided in an embodiment of the present application.

[0025] In a twelfth aspect, a computer program / program product is provided. 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 steps of the perception signal sending method provided in the embodiment of the present application. The computer program / program product is executed by at least one processor to implement the steps of the perception signal receiving method provided in the embodiment of the present application.

[0026] In an embodiment of the present application, a first device selects m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N. The first device transmits a target signal to a second device via a target antenna from the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for sensing measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device. Thus, when the target signal is transmitted via the target antenna for sensing measurement, the antenna indexes of the m antennas transmitting the target signal are used for index modulation to transmit the first information to the second device, thereby transmitting information to the second device during the process of transmitting the signal for sensing measurement, thereby improving the communication performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0028] FIG2 is a schematic diagram of a perception measurement scenario provided by an embodiment of the present application;

[0029] FIG3 is a flowchart of a method for sending a perception signal provided by an embodiment of the present application;

[0030] FIG4 is a schematic diagram of an activation antenna provided in an embodiment of the present application;

[0031] FIG5 is a schematic diagram of a signal time domain position provided by an embodiment of the present application;

[0032] FIG6 is a schematic diagram of a region division provided in an embodiment of the present application;

[0033] FIG7 is a schematic diagram of another area division provided in an embodiment of the present application;

[0034] FIG8 is a schematic diagram of a signal waveform provided in an embodiment of the present application;

[0035] FIG9 is a flowchart of a method for receiving a perception signal provided in an embodiment of the present application;

[0036] FIG10 is a schematic diagram of a perception measurement provided in an embodiment of the present application;

[0037] FIG11 is a schematic diagram of another perception measurement provided in an embodiment of the present application;

[0038] FIG12 is a structural diagram of a perception signal sending device provided in an embodiment of the present application;

[0039] FIG13 is a structural diagram of a perception signal receiving device provided in an embodiment of the present application;

[0040] FIG14 is a structural diagram of a communication device provided in an embodiment of the present application;

[0041] FIG15 is a structural diagram of another communication device provided in an embodiment of the present application;

[0042] FIG16 is a structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0044] The terms "first", "second", etc. in this 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 the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0045] The term "indication" in this application can be either 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, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0046] 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 technology described 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 the NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6G) system. thGeneration, 6G) communication system.

[0047] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or 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, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or 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.

[0048] 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 (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 (WLAN) access point (AP), or a wireless fidelity (WiFi) node. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B (homeevolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment 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.

[0049] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home subscriber server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), etc. Function, BSF), application function (AF), location management function (LMF), gateway mobile location center (GMLC), network data analysis function (NWDAF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is taken as an example to introduce, and the specific type of the core network device is not limited.

[0050] In some embodiments, network-side devices and terminals may have perception capabilities in addition to communication capabilities. Perception capabilities refer to one or more devices with the ability to sense the position, distance, speed, and other information of a target object through the transmission and reception of wireless signals, or to detect, track, identify, and image a target object, event, or environment. Some perception functions and application scenarios are shown in Table 1:

[0051] Table 1

[0052] It should be noted that the perception categories shown in Table 1 above are only examples, and the embodiments of the present application do not limit the categories of perception measurements.

[0053] In addition, the embodiments of the present application can be applied to the communication and perception integration scenario, where communication and perception integration refers to the integrated design of communication and perception functions through spectrum sharing and hardware sharing in the same system. While transmitting information, the system can perceive information such as direction, distance, speed, and detect, track, and identify target devices or events. The communication system and the perception system complement each other to achieve overall performance improvement and bring a better service experience.

[0054] For example: the integration of communication and radar is a typical communication-perception integration (communication-perception fusion) application, and the integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, and mutual interference reduction, thereby improving the overall performance of the system.

[0055] In the embodiment of the present application, depending on the difference between the sending node and the receiving node of the perception signal, the six types of perception links shown in Figure 2 may be included but not limited to. It should be noted that each perception link in Figure 2 is illustrated by taking a sending node and a receiving node as an example. In the actual system, different perception links can be selected according to different perception needs. Each perception link may have one or more sending nodes and one receiving node, and the actual perception system may include a variety of different perception links. In addition, the perception targets in Figure 2 take people and cars as examples, and assuming that people and cars do not carry or install signal receiving / transmitting equipment, the perception targets of the actual scene will be richer.

[0056] Sensing link 1: The base station transmits and receives sensing signals autonomously. In this mode, the base station sends sensing signals and obtains sensing results by receiving the echo of the sensing signals.

[0057] Sensing link 2: inter-base station air interface sensing. In this mode, base station 2 receives the sensing signal sent by base station 1 and obtains the sensing result.

[0058] Perception link 3: Uplink air interface perception: In this mode, the base station receives the perception signal sent by the terminal and obtains the perception result.

[0059] Perception link 4: Downlink air interface perception: In this mode, the terminal receives the perception signal sent by the base station and obtains the perception result.

[0060] Perception link 5: Terminal self-transmitting and self-receiving perception. In this mode, the terminal sends a perception signal and obtains the perception result by receiving the echo of the perception signal.

[0061] Perception link 6: Sidelink perception between terminals. For example, terminal 2 receives a perception signal sent by terminal 1 and obtains a perception result, or terminal 1 receives a perception signal sent by terminal 2 and obtains a perception result.

[0062] In some embodiments, the "multiple input" in a Multiple-Input Multiple-Output (MIMO) radar refers to the simultaneous transmission of multiple radar signal waveforms (e.g., multiple antennas simultaneously transmitting different waveforms), while the "multiple output" refers to the simultaneous reception by multiple antennas and output via multiple receivers to obtain multi-channel spatially sampled signals. In a MIMO radar system, the transmitted signals from each array element are no longer a set of coherent signals, but rather a set of mutually orthogonal signals. These signals can be combined through time division multiplexing (TDM), frequency division multiplexing (FDM), Doppler division multiplexing (DDM), and code division multiplexing (CDM). When spatially superimposed, the transmitted signals do not form a narrow, high-gain beam, but rather a wide, low-gain beam, achieving simultaneous energy coverage over a large spatial area, thereby enabling simultaneous tracking and search for targets within a large spatial area. MIMO radar utilizes waveform diversity and virtual array (VA) principles to achieve high detection / estimation resolution and excellent environmental clutter suppression.

[0063] Below, in conjunction with the accompanying drawings, a perception signal sending method, receiving method, device and equipment provided by the embodiments of the present application are described in detail through some embodiments and their application scenarios.

[0064] Please refer to FIG3 , which is a flowchart of a method for sending a perception signal provided in an embodiment of the present application. As shown in FIG3 , the method includes the following steps:

[0065] Step 301: The first device selects m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N.

[0066] The first device mentioned above may be a terminal or a network side device.

[0067] The first device may select m antennas from N candidate antennas based on a perception requirement or a communication requirement.

[0068] Step 302: The first device sends a target signal to the second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device.

[0069] That the target antenna includes the m antennas may be understood as the target antenna being the m antennas, or the target antenna including other antennas in addition to the m antennas.

[0070] The sending of the target signal to the second device through the target antenna among the N candidate antennas refers to sending the target signal through each of the target antennas respectively.

[0071] The target signal being used for the perception measurement may be that the second device performs the perception measurement based on the target signal, or may be that the first device performs the perception measurement based on the target signal.

[0072] The antenna indices of the above-mentioned m antennas are used for index modulation. The index modulation is used to transmit the first information to the second device. It can be understood that the antenna indices of the m antennas are used as the transmission carriers of the first information to transmit the first information to the second device. The second device can demodulate the above-mentioned information through the antenna indices of the above-mentioned m antennas.

[0073] The above index modulation can be performed by using the antenna index of m antennas to modulate information. The number of information bits that can be transmitted each time modulation is The second device determines the indexes of the m antennas based on the detection of the signals transmitted by the m antennas, and then obtains the transmitted bits of information.

[0074] The index modulation described above may be spatial modulation (SM), which can be used as a multiple-input, multiple-output (MIMO) transmission scheme. SM uses the activation state of the antenna (whether or not it is transmitting a signal) as a carrier for information transmission, so that the antenna index can transmit a portion of the bits of information. In the embodiment of the present application, multiple transmitting antennas are activated each time for signal transmission, and the combination of multiple antenna indices is used to transmit information, further improving modulation efficiency.

[0075] It should be noted that in the embodiments of the present application, the above-mentioned modulation is not limited to spatial modulation, and other modulation methods that support transmitting information through antenna indexes are acceptable.

[0076] After receiving the target signal, the second device determines the antenna indexes of the m antennas and demodulates the antenna indexes of the m antennas to obtain the information transmitted by the antenna indexes of the m antennas. For example, if the target signal adopts time division multiplexing (TDM) or frequency division multiplexing (FDM), the corresponding transmitting antenna index is determined by detecting its time domain or frequency domain resource position, and then the information corresponding to the index modulation is determined; if the target signal adopts code division multiplexing (CDM), the transmitting sequence and the corresponding transmitting antenna index are determined by sequence correlation detection, and then the information corresponding to the index modulation is determined.

[0077] In an embodiment of the present application, when a target signal is transmitted through a target antenna for perception measurement, the antenna indexes of the m antennas transmitting the target signal are used for index modulation to transmit first information to a second device, thereby enabling information to be transmitted to the second device during the process of transmitting the signal for perception measurement. That is, by transmitting the target signal, both perception measurement and information transmission between devices can be achieved, thereby improving the communication performance of the devices. In addition, since m is greater than 1, the target antenna includes the m antennas, that is, the target signal is transmitted through at least m antennas, and multiple target signals are transmitted, so that perception measurement can be performed more accurately and reliably during the perception measurement process, thereby improving perception performance.

[0078] As an optional implementation manner, the target signal carries second information.

[0079] The first information and the second information are two different pieces of information. The first information is information transmitted through antenna index modulation, and the second information is information transmitted through the target signal itself.

[0080] The target signal carrying the second information means that the target signal may carry communication information in addition to being used for sensing and measurement.

[0081] For example, the target signal may include at least one of the following:

[0082] Reference signals, synchronization signals, and signals that carry communication data.

[0083] The reference signal may be a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), or a positioning reference signal (PRS).

[0084] The synchronization signal may be a primary synchronization signal (PSS) or a secondary synchronization signal (SSS).

[0085] The above-mentioned signal carrying communication data can be a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), a physical downlink control channel (PDCCH) or a physical uplink control channel (PUCCH), etc.

[0086] In the above optional implementation manner, since the target signal carries the second information, the communication performance of the device can be further improved.

[0087] It should be noted that the target signal may also include a dedicated perception signal, for example, a perception signal generated based on a chirp or frequency modulated continuous wave (FMCW) signal, or a perception signal generated based on a pseudo-random (PN) sequence.

[0088] In addition, in embodiments of the present application, the target signals transmitted by the target antennas may be signals of the same type, for example, dedicated sensing signals, reference signals, synchronization signals, or signals carrying communication data. Alternatively, the target signals transmitted by the target antennas may include at least two of the following: dedicated sensing signals, reference signals, synchronization signals, or signals carrying communication data.

[0089] As an optional implementation manner, the m antennas are m antennas selected and activated from the N candidate antennas.

[0090] The m antennas are in an inactive state before being selected, that is, not activated. Activation means being used to transmit target signals, and inactivated antennas are not used to transmit target signals.

[0091] In one of the above optional implementations, information can be transmitted to the second device through modulation by the antenna indices of the m activated antennas, so that the second device only needs to detect the activated antennas and demodulate the transmitted information through the indices of these antennas to reduce the complexity of information transmission.

[0092] It should be noted that, in this embodiment, activation of the above m antennas is not limited. For example, in some implementations, the antenna selected by default can also be capable of sending the above target signal, that is, the target signal can be sent directly after selection without activation.

[0093] As an optional implementation manner, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, and x is a positive integer.

[0094] The x antennas in the normally activated state may be understood as fixed activated antennas, and the remaining antennas are candidate activated antennas, wherein the m antennas are antennas selected from the candidate activated antennas.

[0095] In one optional embodiment described above, the first device may select m+x antennas from N candidate transmitting antennas each time to activate for target signal transmission, and use m of the antennas for index modulation, so that the number of bits that can be transmitted each time is Furthermore, since the x antennas are in a normally activated state and are not used for index modulation, it is possible to use signals sent by more antennas for sensing measurement, thereby improving MIMO sensing performance.

[0096] In some implementations, the x antennas can be antennas on both sides of the N candidate antennas. Taking a one-dimensional linear antenna array as an example, as shown in Figure 4, the N candidate antennas are eight antennas, with the two antennas on both sides being fixedly activated, and the six antennas in the middle being candidate active antennas for index modulation and MIMO sensing. Since the x antennas can be antennas on both sides of the N candidate antennas, the angular measurement resolution of the sensing measurement can be higher, thereby improving the angular measurement resolution in MIMO sensing.

[0097] As an optional implementation manner, the m antennas include:

[0098] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0099] The mapping of each antenna port to at least one antenna unit means that each antenna port is in a mapping relationship with at least one antenna unit.

[0100] In one of the above optional embodiments, the antenna may be an antenna group, an antenna panel, an antenna unit or an antenna port. The above-mentioned N candidate antennas may be N candidate antenna groups, N candidate antenna panels, N candidate antenna units or N candidate antenna ports. For example: the above-mentioned N candidate antennas may be N candidate antenna groups (such as dividing the overall antenna array into N subarrays, each subarray including multiple antennas), from which m antenna groups (subarrays) are selected for target signal transmission and modulation. The signals transmitted by each antenna in each antenna group are the same, and joint beamforming can be performed. For another example: the above-mentioned N candidate antennas may be N candidate antenna panels, from which m antenna panels are selected for signal transmission and modulation.

[0101] In the above optional implementation manner, since the antenna can be an antenna group, an antenna panel, an antenna unit or an antenna port, more flexible signal transmission can be achieved to meet more requirements.

[0102] As an optional implementation, the method further includes:

[0103] The first device sends first information to the second device, where the first information includes at least one of the following:

[0104] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0105] The above-mentioned antenna index modulation related information is used to indicate the above-mentioned antenna index modulation related information of the m antennas, so as to assist the second device to better demodulate the information transmitted by the first device, so as to improve the reliability of information transmission.

[0106] Optionally, the antenna index modulation related information includes at least one of the following:

[0107] Indication information on whether antenna index modulation is enabled;

[0108] The number of candidate antennas;

[0109] a set of antenna indices of candidate antennas;

[0110] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0111] a mapping relationship between an activated antenna index and the first information;

[0112] a mapping relationship between activated antenna index combinations and the first information;

[0113] A mapping relationship between antennas and sequences of target signals;

[0114] A mapping relationship between antennas and frequency domain resources of the target signal;

[0115] A mapping relationship between antennas and time domain resources of the target signal;

[0116] The modulation order of the index modulation;

[0117] The number of antennas that are always active;

[0118] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0119] A set of antenna indices that are always active.

[0120] The above-mentioned indication information of whether antenna index modulation is enabled may be an identifier of whether antenna index modulation is enabled.

[0121] The number of candidate antennas may be N, such as the number of candidate antennas / the number of antenna groups / the number of subarrays / the number of antenna panels N. In some embodiments, if the array is a rectangular array, the number of candidate antennas may further include the number of antennas in the horizontal dimension N1 and the number of antennas in the vertical dimension N2. The number of antennas in the horizontal and vertical dimensions may assist the second device in better performing angle measurement, thereby improving the accuracy of the angle measurement.

[0122] The antenna index set of the candidate antennas may be an index set of the N candidate antennas, such as a candidate antenna index set, an antenna group index set, a subarray index set, or an antenna panel index set. The antenna index set of the candidate antennas may enable the second device to more accurately identify the antenna indexes of the m antennas, thereby improving the reliability of information demodulation.

[0123] The number of antennas m that need to be activated each time during index modulation among the N candidate antennas that are not in a normally activated state is so that the second device can more accurately identify the antenna indexes of the above m antennas to improve the reliability of information demodulation.

[0124] The mapping relationship between the activated antenna index and the first information may include the mapping relationship between the antenna index of different activated antennas and the bit sequence (modulation symbol set) of the first information, so that the second device can more easily demodulate the information transmitted by the first device.

[0125] The mapping relationship between the activated antenna index combination and the information can include a mapping relationship between different activated index combinations and a bit sequence (modulation symbol set) of the first information, that is, a mapping relationship between the bits of the transmitted first information and the antenna combination index. For example, the number of candidate antennas N = 6, and the corresponding antenna index set is {1, 2, 3, 4, 5, 6}; the number of antennas activated each time during index modulation is m = 2, that is, the activated antenna index combination is the index of 2 antennas; then the modulation order at this time is 3 (each modulation can transmit 3 bits of information), and the relationship between the transmitted information bits and the activated antenna index is shown in Table 2 below.

[0126] Table 2:

[0127] In this way, through the mapping relationship between the activated antenna index combination and the first information, the second device can simply and accurately demodulate the information transmitted by the first device.

[0128] The mapping relationship between the antenna and the sequence of the target signal includes a mapping relationship between different antennas and the sequence of the target signal to support code division multiplexing (CDM) and save time and frequency resources, and specifically corresponds to CDM MIMO radar.

[0129] The mapping relationship between the antenna and the frequency domain resource of the target signal includes a mapping relationship between different antennas and frequency domain resources to support frequency division multiplexing (FDM), which may specifically correspond to FDM MIMO radar.

[0130] The mapping relationship between the antenna and the time domain resource of the target signal includes a mapping relationship between different antennas and time domain resources to support time division multiplexing (TDM), and specifically corresponds to a TDM MIMO radar.

[0131] The modulation order of the index modulation may be the number of bits that can be transmitted corresponding to each index modulation, and the number of bits is related to the total number of antennas and the number of antennas activated each time.

[0132] The number of antennas in the normally activated state (i.e., fixed activation) can be the number of antennas / antenna groups / subarrays / antenna panels x that are fixedly activated for MIMO sensing, so that the second device excludes x antennas out of N candidate antennas, thereby reducing the complexity of the second terminal demodulating the first information transmitted by the first device.

[0133] The number of candidate antennas that are not in a normally activated state among the N candidate antennas mentioned above can be the number of candidate antennas / number of antenna groups / number of subarrays / number of antenna panels Nx used for index modulation, so that the second device demodulates the first information transmitted by the first device based on the number of antennas and the above m to improve the accuracy of demodulation.

[0134] The above-mentioned antenna index set in a normally activated state may be an antenna index set / antenna group index set / subarray index set / antenna panel index set in a normally activated state for MIMO sensing, so that the second device can accurately identify the antenna indexes of the above-mentioned x antennas, so as to avoid the second device from demodulating based on the antenna indexes of the above-mentioned x antennas.

[0135] It should be noted that the above-mentioned antenna index modulation related information may be a protocol agreement or pre-configuration, that is, the embodiments of the present application do not limit the above-mentioned first information to include the above-mentioned antenna index modulation related information. Alternatively, at least one item included in the above-mentioned antenna index modulation related information may be a protocol agreement or pre-configuration, such as the above-mentioned mapping relationship, index information, etc., which may be a protocol agreement, thereby saving the overhead of the first information.

[0136] The configuration information of the target signal may be configuration information such as resources, format or sequence of the target signal. The configuration information of the target signal may enable the second device to receive the target signal more reliably, thereby improving the reliability of target signal transmission.

[0137] Optionally, the configuration information of the target signal includes at least one of the following:

[0138] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, Quasi Co-Location (QCL) relationship, cyclic prefix information, orthogonal mode of the target signal sent through the target antenna, and MIMO radar perception information.

[0139] The orthogonal method of the target signal transmitted by the target antenna refers to an orthogonal method between the target signals transmitted by each antenna of the target antenna, such as at least one of CDM, TDM, or FDM, or a combination of at least two of the foregoing methods. The orthogonal method of the target signal enables the second device to better receive the target signal, thereby improving signal transmission reliability.

[0140] The MIMO radar sensing information is used to indicate relevant information that the target signal sent by the first device uses MIMO radar sensing. For example, the MIMO radar sensing information may include at least one of the following:

[0141] Instructions for turning on MIMO radar sensing;

[0142] The number of antennas available for MIMO radar sensing;

[0143] A set of antenna indices that can be used for MIMO radar sensing.

[0144] The above-mentioned indication information for turning on MIMO radar perception may be an identifier for turning on MIMO radar perception. If the identifier is “yes”, it indicates that MIMO radar perception is performed by using a method of sending orthogonal signals using multiple antennas.

[0145] The above-mentioned indication information for turning on MIMO radar perception can also be represented by the correlation coefficient of the transmitted signals between antennas. For example, the correlation coefficient is quantized into several different levels, corresponding to different signal transmission schemes. Among them, the lower the correlation coefficient, the closer the transmitted signal is to orthogonality, and MIMO radar perception is turned on. When the coefficient is 1, it means that all antennas transmit the same signal, which is the phased array radar perception mode.

[0146] In some embodiments, whether to enable the MIMO radar sensing mode or the correlation coefficient of the transmitted signals between antennas may be associated with the angular resolution in the sensing requirement information. For example, the MIMO radar sensing mode may be enabled when the required angular resolution is higher than a certain threshold, or the higher the required angular resolution, the lower the correlation coefficient of the corresponding signal transmission scheme may be selected.

[0147] The above-mentioned antenna data that can be used for MIMO radar perception refers to the number of antennas of the above-mentioned target antenna, such as the above-mentioned m, or m+x, that is, the number of antennas / antenna groups / subarrays / antenna panels that can be used for MIMO radar perception m (or m+x).

[0148] The antenna index set that can be used for MIMO radar sensing may be an antenna index set / antenna group index set / subarray index set / antenna panel index set that can be used for MIMO radar sensing.

[0149] The above-mentioned MIMO radar perception information can enable the second device to better perform MIMO radar perception measurement based on the information when performing perception measurement, so as to improve perception performance.

[0150] The above signal resource identifier is used to distinguish different signal resource configurations;

[0151] The signal usage indicates whether the target signal is used for communication (e.g., channel measurement, channel estimation, synchronization, carrying data information, etc.), a signal used for sensing, or a signal used for both communication and sensing. Specifically, it may also indicate which sensing service the signal is used for, or which type of sensing service the signal is used for.

[0152] The waveform may be OFDM, single-carrier frequency-division multiple access (SC-FDMA), orthogonal time-frequency space (OTFS), frequency modulated continuous wave (FMCW), or a pulse signal;

[0153] The above subcarrier spacing may be the subcarrier spacing of an OFDM system, for example, 30 kHz.

[0154] The guard interval can be the time interval from the moment the 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 calculated by c / (2R max ) is calculated, R max is the maximum perception distance (belonging to the perception demand information), such as for the self-transmitted and self-received perception signal, R max Represents the maximum distance between the perceived signal transmission and reception point and the signal reflection point; in some cases, the OFDM signal cyclic prefix (CP) can serve as the minimum guard interval, and c is the speed of light.

[0155] The above-mentioned frequency domain starting position may be a starting frequency point, or a starting resource element (RE) or resource block (RB) index.

[0156] The frequency domain resource length may be a frequency domain bandwidth, which is inversely proportional to the distance resolution. The frequency domain bandwidth of each signal is B≥c / (2ΔR), where c is the speed of light and ΔR is the distance resolution.

[0157] The frequency domain resource spacing represents the spacing between adjacent signal frequency domain resource units and can be expressed as the number of REs or RBs, or as a density value (Density). For example, Density = 1 indicates that there is one RE in each RB used to carry the signal. The frequency domain resource spacing is inversely proportional to the maximum unambiguous distance / delay. For an OFDM system, when subcarriers are mapped continuously, the frequency domain spacing is equal to the subcarrier spacing.

[0158] The above-mentioned time domain starting position can be a starting time point, or a starting symbol, time slot, or frame index.

[0159] The time domain resource length may be a burst duration, and the time domain resource length is inversely proportional to the Doppler resolution.

[0160] The time domain resource interval may be a time interval between two adjacent signal resource units, and the time domain resource interval is associated with a maximum unambiguous Doppler frequency shift or a maximum unambiguous speed.

[0161] The above-mentioned time domain resource characteristics may be periodic transmission, semi-persistent transmission or aperiodic transmission.

[0162] The above signal power may be an interval power value, for example, a value is taken every 2dBm from -20dBm to 23dBm.

[0163] The above sequence information may include sequence type information (such as ZC sequence, PN sequence, etc.), sequence generation method or sequence length, etc.

[0164] The above-mentioned signal direction may be angle information or beam information of signal transmission.

[0165] The above-mentioned QCL relationship may indicate that the above-mentioned signal includes multiple resources, each resource is associated with a synchronization signal block (Synchronization Signal Block, SSB) QCL, and the QCL includes type A, type B, type C or type D.

[0166] The above antenna port information may be the maximum number of antenna ports or an antenna port index.

[0167] The above-mentioned cyclic prefix (CP) information may include a CP type or a CP length, etc., wherein the CP type may include a normal cyclic prefix (NCP), an extended cyclic prefix (ECP) or a newly designed perception measurement-specific CP, etc.

[0168] It should be noted that, in the embodiment of the present application, one or more items included in the configuration information of the above-mentioned target signal may also be agreed upon by the protocol or pre-configured, and this is not limited to this.

[0169] The measurement configuration information is used to indicate relevant configuration information of the perception measurement or communication measurement, so that the second device can better perform the perception measurement or communication measurement. For example, the measurement configuration information includes at least one of the following:

[0170] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0171] The measured signal resource indication may indicate the signal resource measured by the second device. For example, the measured signal resource indication includes an identifier of the measurement signal. The second device determines the signal configuration information of the measurement signal through the identifier, and further determines the measured signal resource.

[0172] The above-mentioned perceptual measurements can be divided into the following categories:

[0173] The first-level measurement quantity (also known as the received signal / original channel information) includes at least one of the following:

[0174] Received signal / channel response complex results, amplitude / phase, I-path / Q-path and related operation results (operations including addition, subtraction, multiplication, and division, matrix addition, subtraction, multiplication, and division, matrix transposition, trigonometric operations, square root operations, and power operations, as well as threshold detection results and maximum / minimum value extraction results of the above operation results; wherein, operations also include Fast Fourier Transform (FFT) / Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT) / Inverse Discrete Fourier Transform (IDFT), 2D-FFT, 3D-FFT, matched filtering, autocorrelation operation, wavelet transform, and digital filtering, as well as threshold detection results and maximum / minimum value extraction results of the above operation results);

[0175] The second-level measurement quantity (also called basic measurement quantity) includes at least one of the following: time delay, Doppler, angle, intensity, and their multi-dimensional combination representation;

[0176] The third level of measurement (also known as basic attributes / states) includes at least one of the following: distance, speed, direction, spatial position, acceleration;

[0177] The fourth level of measurement (also known as advanced attributes / states) includes at least one of the following: target presence, trajectory, movement, expression, vital signs, quantity, imaging results, weather, air quality, shape, material, and composition.

[0178] The measurement result reporting configuration is used to indicate the criteria for the second device to report the measurement result, for example, including at least one of the reported time-frequency domain resource configuration, the reporting period, or the reported triggering event. The triggering event may include at least one of the following:

[0179] Events of entering a specific area (e.g., a neighborhood);

[0180] Events arriving at a specific time;

[0181] An event where a certain type of measurement signal reaches a certain threshold;

[0182] Events where the device moves more than some predefined (linear) distance from its previous position;

[0183] Events where the device orientation changes by more than some predefined angle;

[0184] Events where the device's movement speed exceeds some predefined speed threshold;

[0185] An event in which changes in environmental information (such as temperature, humidity, or light intensity) measured by device sensors exceed a certain range.

[0186] In some implementations, the measurement configuration information may include one or more items that are agreed upon by a protocol or pre-configured to save overhead of the first information.

[0187] In some embodiments, the first information includes at least one of the information related to antenna index modulation, the configuration information of the target signal, or the measurement configuration information, and may also be sent to the second device by the perception network function, and the at least one item may be sent by the same signaling, or sent by different signalings, or two of them may be sent by the same signaling, and the other may be sent by different signalings.

[0188] As an optional implementation, the method further includes:

[0189] The first device performs perception measurement on the target signal to obtain a perception measurement result.

[0190] The sensing measurement performed by the first device on the target signal may be sensing measurement of an echo signal of the target signal, specifically self-transmitting and self-receiving sensing measurement. The sensing measurement performed by the first device on the target signal may also be referred to as sensing measurement based on the target signal.

[0191] In this embodiment, the first device can send a signal through the target antenna and receive the signal echo for perception, while using m antennas for spatial modulation to transmit information to the second device to improve the communication performance of the device.

[0192] In some implementations, a second device may also perform perception measurement on the target signal. For example, a first device transmits a signal via a target antenna while performing spatial modulation using m antennas. A second device receives the signals transmitted by the m antennas and performs perception measurement to obtain perception measurement results, and obtains spatial modulation information based on detection of the signals transmitted by the m antennas.

[0193] As an optional implementation manner, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or a nearly orthogonal relationship with each other.

[0194] The above-mentioned approximately orthogonal relationship may mean that the similarity between the relationship between the target signals sent to the second device through the target antenna and the orthogonal relationship is within a preset range, and the preset range may be agreed upon by the protocol or set according to an empirical value.

[0195] In the above optional embodiment, since an orthogonal relationship or a nearly orthogonal relationship is satisfied, the orthogonal characteristic of the signals between the transmitting antennas in the MIMO radar is utilized to improve demodulation reliability and further improve communication performance.

[0196] As an optional implementation manner, the target signal sent by the target antenna adopts at least one of the following multiplexing methods:

[0197] CDM, FDM, TDM.

[0198] In the above optional implementation manner, since at least one of CDM, FDM or TDM is adopted, transmission resources can be saved.

[0199] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0200] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0201] The time domain resource positions occupied by the target signals sent to the second device through the target antenna do not overlap with each other, and the target signals sent by each antenna may occupy different time domain resources. For example, as shown in Figure 5, assuming that the number of antennas used for index modulation and MIMO radar perception is N, at least N time resource units (for example, N OFDM symbols) are required to complete each index modulation and target signal transmission.

[0202] The frequency domain resource positions occupied by the target signals sent to the second device through the target antennas do not overlap with each other, which means that the target signals sent by each antenna occupy different frequency domain resources.

[0203] Since the time domain resource locations do not overlap with each other or the frequency domain resource locations do not overlap with each other, the resources can be used to achieve an orthogonal relationship between signals, thereby utilizing the orthogonal characteristics of signals between each transmitting antenna in the MIMO radar, improving demodulation reliability, and further improving communication performance.

[0204] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0205] In the case of CDM, the target signal sent by the target antenna uses the same sequence as that sent by different antennas in the target antenna, and the target signals sent by different antennas are mapped by orthogonal cover codes (OCC) in the time domain or frequency domain.

[0206] In this embodiment, it is possible to achieve an orthogonal relationship or an approximately orthogonal relationship between signals by adopting different sequences, wherein the sequences can satisfy an orthogonal relationship, or the sequences have good mutual correlation characteristics (i.e., have a smaller mutual correlation peak), so as to improve demodulation reliability and further improve communication performance.

[0207] Among them, the above-mentioned different sequences can be different types of sequences, such as PN sequence, ZC (Zadoff-Chu) sequence, or the above-mentioned different sequences can be different in initial value, primitive polynomial, cyclic shift value or truncation position, etc., which is not limited to this.

[0208] The target signals transmitted by different antennas may be mapped through time domain or frequency domain OCC mapping, or through time domain and frequency domain OCC mapping. The target signals transmitted by different antennas may be mapped through time domain OCC mapping, or through frequency domain OCC mapping, or through both time domain and frequency domain OCC mapping. The target signals transmitted by different antennas may be mapped through time domain or frequency domain OCC mapping to achieve an orthogonal or approximately orthogonal relationship between the signals, thereby improving demodulation reliability and further improving communication performance.

[0209] As an optional implementation manner, the target signal sent by the target antenna includes at least one of the following:

[0210] Signal generated based on PN sequence;

[0211] Signal generated based on ZC sequence;

[0212] A signal generated based on a chirp signal.

[0213] The above-mentioned target signal sent through the target antenna includes at least one of the above items, which can be understood as follows: the target signals sent by different antennas can be generated based on the same sequence or signal, or the target signals sent by different antennas can be generated based on different sequences or signals, or the target signals sent by some antennas are generated based on the same sequence or signal, and the target signals sent by some antennas are generated based on different sequences or signals.

[0214] In this implementation, it is possible to support the target antenna to send multiple target signals to meet the needs of more services or scenarios.

[0215] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0216] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0217] At least one of the frequency modulation slope or the starting frequency of the Chirp signal is associated with the second information;

[0218] The second information includes at least one of the following:

[0219] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0220] Among them, associating at least one of the initial value, primitive polynomial, cyclic shift value or truncation position of the above-mentioned PN sequence with the second information can refer to determining at least one of the initial value, primitive polynomial, cyclic shift value or truncation position of the PN sequence based on the second information.

[0221] Associating at least one of the root sequence number or the cyclic shift value of the ZC sequence with the second information may be determining at least one of the root sequence number or the cyclic shift value of the ZC sequence according to the second information.

[0222] Associating at least one of the frequency modulation slope or the starting frequency of the Chirp signal with the second information may be determining at least one of the frequency modulation slope or the starting frequency of the Chirp signal according to the second information.

[0223] In this embodiment, it is possible to determine the generation sequence or signal of the target signal based on at least one item included in the above-mentioned second information, so as to associate the transmitted target signal with at least one item included in the above-mentioned second information, thereby improving the correlation characteristics of the target signal and making the target signal transmission more reliable.

[0224] The target signal is described below with an example:

[0225] In this embodiment, the target signal is described as a MIMO radar perception signal based on TDM, FDM and CDM.

[0226] One approach is to sense signals for MIMO radars based on TDM or FDM, i.e., different antennas / antenna ports / antenna groups / subarrays / antenna panels correspond to specific time and frequency domain resource locations and do not overlap with each other, thereby satisfying an orthogonal relationship. This approach is simple to implement and has low resource utilization. For example, when combined with antenna index modulation, taking TDM as an example, assuming that the number of antennas used for index modulation and MIMO radar sensing is N, at least N time resource units (e.g., N OFDM symbols) are required to complete each index modulation and target signal transmission, as shown in Figure 5.

[0227] Another approach is CDM-based MIMO radar sensing signal design, whereby different antennas / antenna ports / antenna groups / subarrays / antenna panels correspond to specific transmit sequences, with the sequences either being orthogonal or exhibiting good cross-correlation characteristics (small cross-correlation peaks). Alternatively, the sequences corresponding to different antennas can be identical, and orthogonalized through time-domain and / or frequency-domain OCC mapping.

[0228] The target signal sent by each antenna may be generated in at least one of the following ways:

[0229] Based on PN sequence generation;

[0230] Generation based on the ZC (Zadoff-Chu) sequence (or the cyclic extension sequence of the ZC sequence, or the truncated sequence of the ZC sequence);

[0231] Based on Chirp signal generation.

[0232] If the sequence is generated and associated with the second information based on a PN sequence, for example, by performing quadrature phase shift keying (QPSK) modulation, then an initial value of the PN sequence, or a primitive polynomial of the PN sequence, or a cyclic shift value of the PN sequence, or a truncation position of the PN sequence (i.e., the sequence may be generated by obtaining an entire sequence based on the system bandwidth and then truncation based on the actual bandwidth) is associated with the second information;

[0233] If the sequence is generated based on a ZC sequence, the root sequence number or cyclic shift value of the ZC sequence is associated with the second information;

[0234] If the sequence is generated based on a Chirp signal, the frequency modulation slope or the starting frequency of the Chirp signal is associated with the second information.

[0235] The second information includes at least one of the following:

[0236] Perception area identification;

[0237] Whether it is used for perception identification, perception service identification, or perception service type identification;

[0238] Perception target identifier, the tag identifier associated with the perception target;

[0239] Number of perceived targets;

[0240] Perceptual measurement quantity identification;

[0241] The device identifier involved in the sensing measurement may be, for example, a cell identifier or a terminal identifier, such as a Radio Network Temporary Identifier (RNTI);

[0242] Time domain resource information;

[0243] Frequency domain resource information;

[0244] Antenna index or antenna port index, or antenna group index / subarray index / antenna panel index;

[0245] Maximum number of antennas, or number of antenna ports, or number of antenna groups / subarrays / antenna panels;

[0246] Codeword index.

[0247] Among them, the time domain resource information may include the following

[0248] Radio frame index, subframe index, time slot index, symbol index, duration, time domain density, cyclic prefix CP type, CP length, and also coherent processing time window index or number of coherent processing time windows;

[0249] Among them, the wireless frame index, subframe index, time slot index, and symbol index can be the wireless frame index and subframe index defined by the communication system, or the relative wireless frame index and subframe index within the perception coherent processing time window / perception resource block, or the symbol index within the time slot, or the symbol index within the coherent processing time window / perception resource block, or the time slot index within the wireless frame, or the time slot index within the coherent processing time window / perception resource block.

[0250] The above-mentioned coherent processing time window is the time window for each calculation and output of the perception measurement result (for example, the time domain resource length corresponding to the range-Doppler map obtained by performing a two-dimensional FFT operation), which can include multiple time slots / symbols.

[0251] The above-mentioned frequency domain resource information may include at least one of the following: RE index, RB index, frequency point information, frequency band information, bandwidth, frequency domain density, and subcarrier spacing.

[0252] The above-mentioned frequency domain resource information can also introduce a perception resource block index. The perception resource block includes multiple physical resource blocks (PRBs) and multiple time slots / symbols, that is, it includes specific time-frequency domain resources (for example, the frequency domain resource length and time domain resource length corresponding to the range-Doppler map obtained by performing a two-dimensional FFT operation);

[0253] Further explanation of the above second information and sequence generation is as follows:

[0254] Perception area identification:

[0255] The sensing area is the target area to be sensed, which can be divided in advance and includes:

[0256] Multiple base station coverage areas (cells) form a perception area, associated with a perception area identifier n areaID As shown in Figure 6, each hexagonal area represents a base station coverage area, and areas with the same number represent the same perception area. In particular, the access network notification area (RAN-based notification area, RNA) can be used as a perception area, and the RNA ID can be used as the perception area identifier.

[0257] The coverage area (cell) of a single base station contains multiple sensing areas, which are associated with multiple sensing area identifiers. For example, with the base station as the origin, its coverage area is rasterized and divided into multiple sensing areas, and each area is associated with an area ID recorded as n. areaID ,As shown in Figure 7, the dotted line represents the base station ,coverage area, and each square represents the divided sensing area.

[0258] Alternatively, the area IDn may be generated by directly using a geographical area identifier such as longitude and latitude or coordinates that is not related to the base station location. areaID .

[0259] It can also be that different angle ranges relative to the base station are associated with different area IDn areaID For example, the azimuth angle x1°~x2° and the pitch angle y1°~y2° correspond to the sensing area ID1, where x and y are real numbers.

[0260] The above-mentioned indication information (such as an identifier) ​​indicating whether it is used for perception, or the perception service identifier, or the perception service type identifier may be generated as follows:

[0261] Based on whether it is used for perception, when it is not used for perception, n sensingID =0; when used for perception n sensingID =1.

[0262] Based on the specific perception service identification, such as different perception services corresponding to different perception service ID n sensingID , wherein the sensing service may be, for example, the following:

[0263] Detection of target presence, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, classification, Radar Cross Section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, population statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, respiration monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather monitoring, environmental reconstruction, topography, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc.

[0264] It can also be the identification of the perception service type. Different categories correspond to different perception service IDs n sensingID , for example, the perception functions or business types are divided according to the scope and scale, for example:

[0265] Category 1 (close distance / small range): material analysis, component analysis, gesture recognition, lip reading recognition, gait recognition, expression recognition, facial recognition, respiratory monitoring, heart rate monitoring, pulse monitoring, etc.

[0266] Category 2 (medium distance / medium range): intrusion detection, population counting, indoor positioning, etc.

[0267] Category 3 (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.

[0268] Other classification standards can also be used, such as classification based on function into positioning perception, imaging perception, pattern recognition perception, etc.; classification based on power consumption / energy consumption, classification based on resource occupancy, etc.

[0269] Alternatively, the perception signal may be generated according to the measurement quantity identifier, that is, at least one of the perception measurement quantities is associated with a measurement quantity identifier, for example, as shown in Table 3 below:

[0270] Table 3:

[0271] The perception measurement quantity is described above and will not be elaborated here.

[0272] The above-mentioned perception target identifier (or the tag identifier associated with the perception target) may be as follows:

[0273] The signal sending device obtains the identification of the sensing target. Different sensing targets correspond to different sensing target ID n targetID , where the determination of the perception target can be based on prior information obtained from existing measurement results. For example, base station A sends a perception measurement signal through an omnidirectional beam to perform preliminary measurement, base station A obtains a range-Doppler map (or a range-angle map, etc.), determines the number of targets based on the range-Doppler map, and assigns an ID to each target. Alternatively, base station A sends a perception measurement signal through an omnidirectional beam to perform preliminary measurement, and a receiving device (such as another base station or terminal) obtains a range-Doppler map (or a range-angle map, etc.), determines the number of targets based on the range-Doppler map, assigns an ID to each target, and then notifies the sending base station of the target ID or target-related information.

[0274] After the signal sending device determines the ID of each target, it generates signals for sensing different targets according to different target IDs. These sensing signals are sent using different beams, with the beam direction pointing to the sensing target associated with the target ID.

[0275] The sensing target is equipped with a tag, and different tags are associated with different tag IDs. The transmitting device obtains the corresponding tag ID and generates the signal used to sense the different targets. The tag can be a device that supports backscatter communication, and its excitation source can be a device other than the tag, or the tag itself. It can also be a terminal, that is, a sensing target equipped with a standard transceiver module, such as a communication device such as an in-vehicle terminal installed in a car.

[0276] It can also be the identification of the perception target type. Different types correspond to different perception target IDs. For example, they are divided into stationary targets and moving targets. The latter can be further divided into high-speed targets and low-speed targets. Different types of targets correspond to different n targetID .

[0277] Specifically, the perception area is identified by n areaID For example, the initial value of the PN sequence can be:

[0278] c init =n areaID , where n areaID Identify the sensing area; or or, or, or

[0279] in, is the number of symbols in each time slot, is the time slot index in the radio frame, l is the symbol index in the time slot, n areaID is the perception area identifier, x is a non-negative positive integer.

[0280] Among them, the coefficient parameter of the first term in the initialization formula can be determined according to the variable value range and the value of the coefficient parameter of the following terms. For example, if there are 1000 perception area IDs in total and they need to be represented by 10-bit binary numbers, then x=10 can be set to ensure that no repeated generation sequence occurs. Where A is a non-negative positive integer, and A=31 can be set.

[0281] or in is the physical cell identifier, or or Where x and y are non-negative positive integers.

[0282] c init =(2 x n RNTI +n areaID )mod2 A or c init =2 x n RNTI +n areaID , where n RNTI is the terminal identifier, where x and A are non-negative positive integers, and A can be set to 31.

[0283] or It can also be or Where x, y, and A are non-negative positive integers, and A can be set to 31.

[0284] or Where q is the codeword index, which can also be or Where x, y, and A are non-negative positive integers, and A can be set to 31.

[0285] Alternatively, taking the sensing area identifier and the sensing target identifier as an example, the initial value of the PN sequence may be: or

[0286] Alternatively, use antenna port index n port For example, the initial value of the PN sequence can be:

[0287] or or or

[0288] Where x, y, z, and A are non-negative positive integers, so A=31, n pors is the port index, is the physical cell identifier, is the number of symbols in each time slot, is the time slot index in the radio frame, l is the symbol index in the time slot, n period is the coherent processing time window index. It should be noted that the symbol index l and the time slot index It can be the symbol index and time slot index corresponding to a symbol in a certain perceptual coherent processing time window.

[0289] Alternatively, the perceptual coherence processing time window index n period and antenna port index n port For example, the initial value of the PN sequence can be:

[0290] c init =(2 x (n period +1)+n port )mod2 A or c init =2 x (n period +1)+n port

[0291] or or or or

[0292] in represents the number of time slots corresponding to each coherent processing time window, The time slot index within the coherent processing time window.

[0293] Among them, n portIt can also represent the antenna index, or the antenna group index / subarray index / antenna panel index. In this way, the sequences corresponding to different antennas or antenna ports, or antenna group index / subarray index / antenna panel index are different and have good cross-correlation characteristics.

[0294] The signal sequence may also be generated based on a ZC sequence. The perception signal generated in this manner has a smaller peak-to-average power ratio (PAPR) than a perception signal generated based on a PN sequence, has higher power amplifier efficiency, and is beneficial to improving perception measurement coverage performance. The root sequence number value or cyclic shift value of the ZC sequence is associated with the first information. Specifically, the generation method may be:

[0295] Determined by the root sequence number q

[0296] Then we get the base sequence 0≤n <M,N ZC is the largest prime number less than the sequence length M. Further, the perception signal is obtained by cyclic shift:

[0297] The sequence length M is related to the perception signal resource and the sequence length. For example, the number of frequency domain resource units used to transmit the perception signal, that is, the sequence length, is determined according to the perception signal bandwidth and the frequency domain resource interval.

[0298] Among them, the cyclic shift value α and the root sequence number q are associated with the first information. The association method can be that the perception area identifier is an 8-bit ID, and all or part of the 8 bits can be used to calculate the root sequence number q or cyclic shift value α of the sequence. For example, the cyclic shift value α can be determined by the first 4 bits of the ID, and the root sequence number q is determined by the last 4 bits of the ID; for another example, the cyclic shift value α is determined according to the perception service identifier, and the root sequence number q is determined according to the perception area identifier. There may be a preset mapping relationship between different perception area identifiers and the root sequence number q, as shown in Table 4 below. The preset mapping relationship is agreed upon or obtained through a signaling message.

[0299] Table 4:

[0300] It can also be calculated according to a formula. Specifically, the root sequence number q can be calculated, for example:

[0301] Among them, u∈{0,1,...,29} is the group number, v is the base sequence number in the group, and taking the perception area identifier as an example, the value can be u=(n areaID )mod30,v=0.

[0302] The calculation method of the cyclic shift value can be in, is the maximum value in the region identifier.

[0303] Alternatively, the signal sequence may be generated based on a chirp or FMCW signal, where the frequency modulation slope of the chirp or FMCW signal is associated with the first information. FMCW transmits a waveform whose frequency varies with time, typically linearly. A frequency modulation cycle of an FMCW waveform is generally also called a chirp, as shown in FIG8 .

[0304] Chirp signal can be expressed by the following formula:

[0305] Among them, A0 is the amplitude, f c is the starting frequency, |k|=±B / T is the frequency modulation slope, where B is the bandwidth and T is the chirp duration (i.e., the frequency modulation period of FMCW).

[0306] Among them, different frequency modulation slopes are associated with the second information. For example, different perception services have different requirements on bandwidth and Chirp duration, that is, different frequency modulation slope requirements. There may be a preset mapping relationship between different perception service IDs and different frequency modulation slopes.

[0307] In addition, different starting frequencies are associated with the second information, for example, there is a preset mapping relationship between different perception areas and starting frequencies.

[0308] It should be noted that the above embodiments are merely examples of target signals in the embodiments of the present application, and the generation of target signals is not limited in the embodiments of the present application.

[0309] In the embodiment of the present application, the first device and the second device may be network-side devices or terminals. The first device may obtain a sensing requirement from a third device, and the first device or the second device may send a sensing measurement result to the third device after obtaining the sensing measurement result. The third device may be a core network sensing network function or a sensing network element.

[0310] Among them, the signaling transmission between the base station and the terminal, and between different terminals is through Radio Resource Control (RRC) signaling or Medium Access Control Control Element (MAC CE) or Layer 1 signaling or other newly defined perception signaling; the signaling transmission between the perception network function and the terminal can be through Non-Access-Stratum (NAS) signaling (forwarded via AMF) or through RRC signaling or MAC CE or Layer 1 signaling or other newly defined perception signaling; the interaction between the perception network function and the base station can be forwarded to the wireless access network through the N2 interface by AMF; or the core network perception network function sends it to the UPF, and the UPF sends it to the wireless access network through the N3 interface; or it is sent to the wireless access network (base station) through a newly defined interface; the signaling transmission between base stations can be through the Xn interface.

[0311] In the embodiment of the present application, the perception network function may also be called a perception network element or a perception management function (Sensing Management Function, Sensing MF), which may be located on the RAN side or the core network side. It refers to a network node in the core network or RAN responsible for at least one function, such as perception request processing, perception resource scheduling, perception information interaction, and perception data processing. It may be based on an upgrade of the AMF or LMF in the mobile communication network, or it may be another network node or a newly defined network node. Specifically, the functional characteristics of the perception network function / perception network element may include at least one of the following:

[0312] Target information is exchanged with a wireless signal sending device or a wireless signal measuring device (including a target terminal or a serving base station of the target terminal or a base station associated with a target area), wherein the target information includes a perception processing request, a perception capability, perception assistance data, a perception measurement quantity type, a perception resource configuration information, etc., to obtain the value of the target perception result or the perception measurement quantity (uplink measurement quantity or downlink measurement quantity) sent by the wireless signal measuring device; wherein the wireless signal can also be referred to as a perception signal.

[0313] The perception method to be used is determined based on factors such as the type of perception service, perception service consumer information, required perception service quality (QoS) requirement information, the perception capability of the wireless signal sending device, and the perception capability of the wireless signal measuring device. The perception method may include: wireless access network device A sends and wireless access network device B receives, or the wireless access network device sends and the terminal receives, or the wireless access network device A sends and receives by itself, or the terminal sends and the wireless access network device receives, or the terminal sends and receives by itself, or terminal A sends and terminal B receives, etc.

[0314] The perception device serving the perception service is determined based on factors such as the type of perception service, information about the perception service consumer, required perception QoS requirement information, the perception capability of the wireless signal sending device, and the perception capability of the wireless signal measuring device. The perception device includes a wireless signal sending device or a wireless signal measuring device.

[0315] Manage the overall coordination and scheduling of resources required for sensing services, such as configuring sensing resources for wireless access network devices or terminals;

[0316] The sensory measurement values ​​are processed or calculated to obtain sensory results. Furthermore, the sensory results are verified and the sensory accuracy is estimated.

[0317] In this embodiment of the present application, the perceived demand information includes at least one of the following:

[0318] Perception services or perception service types, the perception services may be, for example, detecting whether a target exists, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, category classification, RCS detection, polarization scattering characteristic detection, fall detection, intrusion detection, number 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, human flow or Traffic flow detection, crowd density, vehicle density detection, etc.; the sensing service type can be to classify multiple different sensing services according to certain characteristics, such as classification according to function into detection sensing services (such as intrusion detection, fall detection), parameter estimation sensing services (distance, angle, speed calculation), recognition sensing services (action recognition, identity recognition), etc.; it can also be classified according to the range of perception (close-range perception, medium-range perception, long-range perception), according to the degree of perception refinement (coarse-grained perception, fine force perception, etc.), according to power consumption / energy consumption, according to resource usage, etc.;

[0319] Perception target area: refers to the location area where the perception object may exist, or the location area where imaging or environmental reconstruction is required;

[0320] Perception object type: Classify the perception object according to its possible motion characteristics. Each perception object type contains information such as the motion speed, motion acceleration, and typical RCS of a typical perception object.

[0321] Perception Quality of Service (QoS): Performance indicators for perceiving a target area or object, including at least one of the following:

[0322] Perception resolution, which can be divided into: ranging resolution, angle resolution, velocity resolution, imaging resolution, etc.;

[0323] Perception accuracy can be divided into: ranging accuracy, angle measurement accuracy, speed measurement accuracy, positioning accuracy, etc.;

[0324] Perception range, which can be divided into: ranging range, speed measurement range, angle measurement range, imaging range, etc.;

[0325] Perception latency, such as the time interval from the sending of a perception signal to the acquisition of a perception result, or the time interval from the initiation of a perception request to the acquisition of a perception result;

[0326] Perception update rate, such as the time interval between two consecutive perception executions and the acquisition of perception results;

[0327] detection probability, such as the probability of correctly detecting the perceived object given its presence);

[0328] False alarm probability, such as the probability of incorrectly detecting a perceived target when the perceived target does not exist);

[0329] The maximum number of targets that can be perceived.

[0330] In an embodiment of the present application, a first device selects m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N. The first device transmits a target signal to a second device via a target antenna from the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for sensing measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device. Thus, when the target signal is transmitted via the target antenna for sensing measurement, the antenna indexes of the m antennas transmitting the target signal are used for index modulation to transmit the first information to the second device, thereby transmitting information to the second device during the process of transmitting the signal for sensing measurement, thereby improving the communication performance of the device.

[0331] Please refer to FIG9 , which is a flowchart of a method for receiving a perception signal provided in an embodiment of the present application. As shown in FIG9 , the method includes the following steps:

[0332] Step 901: A second device receives a target signal sent by a first device through a target antenna, where the target antenna includes m antennas and the target signal is used for sensing and measurement, where m is a positive integer.

[0333] Step 902: The second device performs demodulation based on the antenna indexes of the m antennas to obtain information conveyed by the antenna indexes of the m antennas.

[0334] Optionally, the target signal carries second information.

[0335] Optionally, the m antennas are m antennas selected and activated from N candidate antennas, where N is a positive integer greater than 1.

[0336] Optionally, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, N is a positive integer greater than 1, and x is a positive integer less than N.

[0337] Optionally, the m antennas include:

[0338] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0339] Optionally, the method further includes:

[0340] The second device receives first information sent by the first device, where the first information includes at least one of the following:

[0341] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0342] Optionally, the antenna index modulation related information includes at least one of the following:

[0343] Indication information on whether antenna index modulation is enabled;

[0344] The number of candidate antennas;

[0345] a set of antenna indices of candidate antennas;

[0346] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0347] a mapping relationship between an activated antenna index and the first information;

[0348] a mapping relationship between activated antenna index combinations and the first information;

[0349] A mapping relationship between antennas and sequences of target signals;

[0350] A mapping relationship between antennas and frequency domain resources of the target signal;

[0351] A mapping relationship between antennas and time domain resources of the target signal;

[0352] The modulation order of the index modulation;

[0353] The number of antennas that are always active;

[0354] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0355] A set of antenna indices that are always active.

[0356] Optionally, the configuration information of the target signal includes at least one of the following:

[0357] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal mode of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

[0358] Optionally, the MIMO radar perception information includes at least one of the following:

[0359] Instructions for turning on MIMO radar sensing;

[0360] The number of antennas available for MIMO radar sensing;

[0361] A set of antenna indices that can be used for MIMO radar sensing.

[0362] Optionally, the measurement configuration information includes at least one of the following:

[0363] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0364] Optionally, the method further includes:

[0365] The second device performs perception measurement on the target signal to obtain a perception measurement result.

[0366] Optionally, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or an approximately orthogonal relationship with each other.

[0367] Optionally, the target signal sent by the target antenna adopts at least one of the following multiplexing modes:

[0368] Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM.

[0369] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0370] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0371] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0372] In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas in the target antenna adopt the same sequence, and the target signals sent by different antennas are mapped by time domain or frequency domain orthogonal cover codes OCC.

[0373] Optionally, the target signal sent by the target antenna includes at least one of the following:

[0374] Signal generated based on pseudo-random PN sequence;

[0375] Signal generated based on ZC sequence;

[0376] Signal generated based on Chirp signal.

[0377] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0378] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0379] At least one of the frequency modulation slope or the starting frequency of the chirp signal is associated with the second information;

[0380] The second information includes at least one of the following:

[0381] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0382] It should be noted that this embodiment is an implementation of the second device corresponding to the embodiment shown in Figure 3. Its specific implementation can refer to the relevant description of the embodiment shown in Figure 3. In order to avoid repeated description, this embodiment will not be repeated.

[0383] The following describes the method provided in the embodiments of the present application through multiple examples:

[0384] Example 1:

[0385] In this embodiment, the combination of MIMO sensing and index modulation is described as an example using device A transmitting and device B receiving.

[0386] In this embodiment, a base station sends a perception signal, a terminal receives the perception signal for perception, and the base station transmits communication information to the terminal through index modulation as an example to illustrate the specific perception and communication process. The specific process is shown in FIG10 and includes the following steps:

[0387] Step 1: The sensing network function sends sensing requirement information to the base station (optional).

[0388] Step 2: The base station sends first information to the terminal, where the first information includes at least one of the following:

[0389] Antenna index modulation related information, target signal configuration information, measurement configuration information.

[0390] The antenna index modulation related information includes at least one of the following:

[0391] Whether to enable antenna index modulation;

[0392] The number of candidate antennas / antenna groups / subarrays / antenna panels N. Specifically, if it is a rectangular array, it can be further divided into the number of antennas in the horizontal dimension N1 and the number of antennas in the vertical dimension N2.

[0393] Candidate antenna index set / antenna group index set / subarray index set / antenna panel index set;

[0394] The number of antennas activated each time during index modulation is m;

[0395] The mapping relationship between different activated antenna indexes or index combinations and information bit sequences (modulation symbol sets) may be a mapping relationship between transmitted information bits and antenna indexes (which may be agreed upon by the protocol). For example, the number of candidate antennas N = 6 corresponds to an antenna index set of {1, 2, 3, 4, 5, 6}. During index modulation, the number of antennas activated each time is m = 2. The modulation order at this time is 3 (each modulation can transmit 3 bits of information). The relationship between the transmitted information bits and the activated antenna indexes is shown in Table 2 above.

[0396] The mapping relationship between different antennas and signal sequences (corresponding to CDM MIMO radar) (for example, the generation method of signal sequences corresponding to different antennas can also be agreed upon by the protocol), or the mapping relationship between antennas and signal frequency domain resources (corresponding to FDM MIMO radar), or the mapping relationship between antennas and signal time domain resources (corresponding to TDM MIMO radar).

[0397] Modulation order (corresponding to the number of bits that can be transmitted per modulation, which is related to the total number of antennas and the number of antennas activated at each time);

[0398] Optionally, when there is an antenna that is fixedly activated for transmitting the target signal, the information related to index modulation further includes at least one of the following:

[0399] Fixed number of antennas / antenna groups / subarrays / antenna panels activated for MIMO sensing (x);

[0400] The number of candidate antennas / antenna groups / subarrays / antenna panels Nx used for antenna index modulation;

[0401] Fixed activation is used for MIMO-aware antenna index sets / antenna group index sets / subarray index sets / antenna panel index sets.

[0402] The configuration information of the target signal, i.e., the signal transmitted by m (or m+x) activated antennas, may include at least one of the following:

[0403] Signal resource identification, signal usage, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, QCL relationship, cyclic prefix information;

[0404] The configuration information of the target signal may further include at least one of the following:

[0405] The flag for enabling MIMO radar sensing. If "yes", it indicates that MIMO radar sensing is performed by transmitting orthogonal signals from multiple antennas. It can also be represented by the correlation coefficient of the transmitted signals between antennas. For example, the correlation coefficient can be quantized into several different levels, corresponding to different signal transmission schemes. The lower the correlation coefficient, the closer the transmitted signals are to orthogonality. When the coefficient is 1, it means that all antennas transmit the same signal, which is the phased array radar sensing mode. Whether to use the MIMO radar sensing mode, or the correlation coefficient of the transmitted signals between antennas, can be associated with the angular resolution in the sensing requirement information. For example, when the required angular resolution is higher than a certain threshold, the MIMO radar sensing mode is enabled, and the higher the required angular resolution, the corresponding signal transmission scheme with a lower correlation coefficient is selected.

[0406] An orthogonal scheme between target signals transmitted by each antenna includes at least one of CDM, TDM, and FDM, or a combination of at least two of the above three methods;

[0407] Number of antennas / antenna groups / subarrays / antenna panels available for MIMO radar sensing (m (or m+x))

[0408] Antenna index sets / antenna group index sets / subarray index sets / antenna panel index sets that can be used for MIMO radar sensing.

[0409] The measurement configuration information may include at least one of the following:

[0410] an indication of the signal resource being measured, such as a signal resource identifier (ID);

[0411] Perceptual measurement quantity;

[0412] The reporting configuration, i.e., the criteria for reporting the measurement result of the second device, includes at least one of the reported time-frequency domain resource configuration, the reporting period, and the reported triggering event. The triggering event includes at least one of the following:

[0413] Events of entering a specific area (e.g., a neighborhood);

[0414] Events arriving at a specific time;

[0415] Or an event where a certain type of measurement signal reaches a certain threshold;

[0416] Events where the device moves more than some predefined (linear) distance from its previous position;

[0417] Events where the device orientation changes by more than some predefined angle;

[0418] Events where the device's movement speed exceeds some predefined speed threshold;

[0419] An event in which changes in environmental information measured by a sensor (such as temperature / humidity / light intensity) exceed a certain range.

[0420] Among them, at least one of the index modulation related information, target signal configuration information and measurement configuration information may also be sent by the perception network function to the terminal (and base station); and the index modulation related information, target signal configuration information and measurement configuration information may be sent by the same signaling, or sent by different signaling, or two of them may be sent by the same signaling, and the other may be sent by different signaling.

[0421] Step 3: The base station performs index modulation according to the communication information to be transmitted, and uses m (or m+x) antennas to transmit the target signal.

[0422] Step 4. The terminal receives the target signal and demodulates it to obtain the communication information carried by index modulation. For example, if the target signal adopts TDM or FDM, the corresponding transmitting antenna index is determined by detecting its time and frequency domain resource position, and then the communication information corresponding to the index modulation is determined; if the target signal adopts CDM, the transmitting sequence and the corresponding transmitting antenna index are determined by sequence correlation detection, and then the communication information corresponding to the index modulation is determined.

[0423] After demodulation is completed, the terminal performs measurement based on the received target signal to obtain a perception measurement result.

[0424] Step 5: The terminal sends the perception measurement result to the perception network function.

[0425] Step 6: The perception network function calculates the perception result based on the perception measurement result. Optionally, the terminal may send the perception measurement result to the base station, and the base station may calculate the perception result based on the perception measurement result and send it to the perception network function.

[0426] The above perception results are further calculated based on the perception measurement results. The perception measurement results and perception results are the values ​​of the perception measurement quantities. For example, the perception measurement results are the delay and angle information corresponding to the perception target, and the perception results are the position or trajectory information of the perception target.

[0427] It should be noted that for the scenario where device A sends and device B receives perception and communication, the terminal can also receive the first information, perform index modulation according to the first information and send the target signal, and the base station receives the signal, demodulates and measures it, obtains the perception measurement result and sends it to the perception network function; or the target signal is sent and received between base stations, or between terminals, and the embodiments of the present application do not limit this.

[0428] Example 2:

[0429] This embodiment is described by taking the combination of self-transmitting and self-receiving MIMO sensing and index modulation as an example.

[0430] In this embodiment, a base station sends a sensing signal and receives a sensing signal echo for sensing, and the base station transmits communication information to the terminal through index modulation as an example. The specific sensing and communication process is described as shown in FIG11, including the following steps:

[0431] Step 1: The sensing network function sends sensing requirement information to the base station (optional).

[0432] Step 2: The base station sends first information to the terminal, where the first information includes at least one of the following:

[0433] Information related to antenna index modulation;

[0434] Configuration information of the target signal;

[0435] Step 3: The base station performs index modulation according to the communication information to be transmitted, and uses m (or m+x) antennas to transmit the target signal.

[0436] Step 4: Receive the target signal and perform demodulation and measurement. This step may include:

[0437] Step 4a: The base station performs measurement based on the received target signal to obtain a perception measurement result; or

[0438] Step 4b: The terminal receives the target signal and demodulates it to obtain the communication information carried by index modulation.

[0439] Step 5: The base station sends the perception measurement result to the perception network function.

[0440] Step 6: The perception network function calculates the perception result based on the perception measurement result. Alternatively, the base station may calculate the perception result based on the perception measurement result and send it to the perception network function.

[0441] It should be noted that for the scenario of spontaneous perception and communication, after the terminal receives the first information, it can also perform index modulation according to the first information and send the target signal. The terminal receives the target signal echo for measurement, obtains the perception measurement result and sends it to the perception network function. The base station receives the target signal and demodulates it to obtain the communication information carried by the index modulation.

[0442] The method provided in the embodiment of the present application combines MIMO radar sensing with antenna index modulation technology, which can improve the communication spectrum efficiency without affecting the sensing performance, and utilize the orthogonal characteristics of the signals between the various transmitting antennas in the MIMO radar to improve the demodulation reliability and ensure communication performance.

[0443] The perception signal sending method provided in the embodiment of the present application may be executed by a perception signal sending device. In the embodiment of the present application, the perception signal sending device performing the perception signal sending method is taken as an example to illustrate the perception signal sending device provided in the embodiment of the present application.

[0444] The perception signal receiving method provided in the embodiment of the present application may be executed by a perception signal receiving device. In the embodiment of the present application, the perception signal receiving device performing the perception signal receiving method is used as an example to illustrate the perception signal receiving device provided in the embodiment of the present application.

[0445] Please refer to FIG. 12 , which is a structural diagram of a perception signal sending device provided in an embodiment of the present application. As shown in FIG. 12 , the perception signal sending device 1200 includes:

[0446] A selection module 1201 is configured to select m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N;

[0447] The first sending module 1202 is used to send a target signal to the second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna index of the m antennas is used for index modulation, and the index modulation is used to transmit the first information to the second device.

[0448] Optionally, the target signal carries second information.

[0449] Optionally, the m antennas are m antennas selected and activated from the N candidate antennas.

[0450] Optionally, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, and x is a positive integer.

[0451] Optionally, the m antennas include:

[0452] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0453] Optionally, the device further includes:

[0454] The second sending module is configured to send first information to the second device, where the first information includes at least one of the following:

[0455] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0456] Optionally, the antenna index modulation related information includes at least one of the following:

[0457] Indication information on whether antenna index modulation is enabled;

[0458] The number of candidate antennas;

[0459] a set of antenna indices of candidate antennas;

[0460] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0461] a mapping relationship between an activated antenna index and the first information;

[0462] a mapping relationship between activated antenna index combinations and the first information;

[0463] A mapping relationship between antennas and sequences of target signals;

[0464] A mapping relationship between antennas and frequency domain resources of the target signal;

[0465] A mapping relationship between antennas and time domain resources of the target signal;

[0466] The modulation order of the index modulation;

[0467] The number of antennas that are always active;

[0468] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0469] A set of antenna indices that are always active.

[0470] Optionally, the configuration information of the target signal includes at least one of the following:

[0471] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal mode of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

[0472] Optionally, the MIMO radar perception information includes at least one of the following:

[0473] Instructions for turning on MIMO radar sensing;

[0474] The number of antennas available for MIMO radar sensing;

[0475] A set of antenna indices that can be used for MIMO radar sensing.

[0476] Optionally, the measurement configuration information includes at least one of the following:

[0477] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0478] Optionally, the device further includes:

[0479] The measurement module is used to perform perceptual measurement on the target signal to obtain a perceptual measurement result.

[0480] Optionally, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or an approximately orthogonal relationship with each other.

[0481] Optionally, the target signal sent by the target antenna adopts at least one of the following multiplexing modes:

[0482] Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM.

[0483] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0484] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0485] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0486] In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas in the target antenna adopt the same sequence, and the target signals sent by different antennas are mapped by time domain or frequency domain orthogonal cover codes OCC.

[0487] Optionally, the target signal sent by the target antenna includes at least one of the following:

[0488] Signal generated based on pseudo-random PN sequence;

[0489] Signal generated based on ZC sequence;

[0490] A signal generated based on a chirp signal.

[0491] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0492] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0493] At least one of the frequency modulation slope or the starting frequency of the Chirp signal is associated with the second information;

[0494] The second information includes at least one of the following:

[0495] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0496] The above-mentioned perception signal sending device can improve the communication performance of the device.

[0497] In the embodiments of the present application, the sensing signal sending device may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. For example, the electronic device may be a terminal, or may be a device other than a terminal. For example, the terminal may include but is not limited to the types of terminals listed in the embodiments of the present application, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0498] The perception signal sending device provided in the embodiment of the present application can implement the various processes implemented by the method embodiment shown in Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0499] Please refer to FIG. 13 , which is a structural diagram of a perception signal receiving apparatus provided in an embodiment of the present application. As shown in FIG. 13 , the perception signal receiving apparatus 1300 includes:

[0500] A first receiving module 1301 is configured to receive a target signal sent by a first device through a target antenna, where the target antenna includes m antennas and the target signal is used for sensing and measurement, where m is a positive integer;

[0501] The demodulation module 1302 is configured to perform demodulation based on the antenna indexes of the m antennas to obtain information conveyed by the antenna indexes of the m antennas.

[0502] Optionally, the target signal carries second information.

[0503] Optionally, the m antennas are m antennas selected and activated from N candidate antennas, where N is a positive integer greater than 1.

[0504] Optionally, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, N is a positive integer greater than 1, and x is a positive integer less than N.

[0505] Optionally, the m antennas include:

[0506] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0507] Optionally, the device further includes:

[0508] The second receiving module is configured to receive first information sent by the first device, where the first information includes at least one of the following:

[0509] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0510] Optionally, the antenna index modulation related information includes at least one of the following:

[0511] Indication information on whether antenna index modulation is enabled;

[0512] The number of candidate antennas;

[0513] a set of antenna indices of candidate antennas;

[0514] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0515] a mapping relationship between an activated antenna index and the first information;

[0516] a mapping relationship between activated antenna index combinations and the first information;

[0517] A mapping relationship between antennas and sequences of target signals;

[0518] A mapping relationship between antennas and frequency domain resources of the target signal;

[0519] A mapping relationship between antennas and time domain resources of the target signal;

[0520] The modulation order of the index modulation;

[0521] The number of antennas that are always active;

[0522] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0523] A set of antenna indices that are always active.

[0524] Optionally, the configuration information of the target signal includes at least one of the following:

[0525] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal mode of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

[0526] Optionally, the MIMO radar perception information includes at least one of the following:

[0527] Instructions for turning on MIMO radar sensing;

[0528] The number of antennas available for MIMO radar sensing;

[0529] A set of antenna indices that can be used for MIMO radar sensing.

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

[0531] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0532] Optionally, the device further includes:

[0533] The measurement module is used to perform perceptual measurement on the target signal to obtain a perceptual measurement result.

[0534] Optionally, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or an approximately orthogonal relationship with each other.

[0535] Optionally, the target signal sent by the target antenna adopts at least one of the following multiplexing modes:

[0536] Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM.

[0537] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0538] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0539] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0540] In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas in the target antenna adopt the same sequence, and the target signals sent by different antennas are mapped by time domain or frequency domain orthogonal cover codes OCC.

[0541] Optionally, the target signal sent by the target antenna includes at least one of the following:

[0542] Signal generated based on pseudo-random PN sequence;

[0543] Signal generated based on ZC sequence;

[0544] Signal generated based on Chirp signal.

[0545] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0546] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0547] At least one of the frequency modulation slope or the starting frequency of the chirp signal is associated with the second information;

[0548] The second information includes at least one of the following:

[0549] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0550] The above-mentioned perception signal receiving device can improve the communication performance of the device.

[0551] The sensing signal receiving device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or a network-side device.

[0552] The perception signal receiving device provided in the embodiment of the present application can implement the various processes implemented by the method embodiment shown in Figure 9 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0553] Optionally, as shown in FIG14 , an embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores a program or instruction that can be executed on the processor 1401. For example, when the communication device 1400 is a first device, the program or instruction, when executed by the processor 1401, implements the various steps of the above-mentioned perception signal sending method embodiment and can achieve the same technical effect. When the communication device 1400 is a second device, the program or instruction, when executed by the processor 1401, implements the various steps of the above-mentioned perception signal receiving method embodiment and can achieve the same technical effect. To avoid repetition, they are not further described here.

[0554] An embodiment of the present application also provides a communication device, including a processor and a communication interface, wherein the processor is used to select m antennas from N candidate antennas, N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N, and the communication interface is used to send a target signal to a second device through a target antenna from the N candidate antennas, the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device. This communication device embodiment corresponds to the above-mentioned perception signal sending method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this communication device embodiment and can achieve the same technical effect.

[0555] Specifically, Figure 15 is a schematic diagram of the hardware structure of a device that implements an embodiment of the present application, and the device is a first device or a second device.

[0556] The device 1500 includes but is not limited to: a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509 and at least some of the components of the processor 1510.

[0557] Those skilled in the art will appreciate that device 1500 may also include a power source (such as a battery) to power various components. The power source may be logically connected to processor 1510 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The device structure shown in FIG15 does not limit the device. The device may include more or fewer components than shown, or may combine certain components or arrange the components differently, which will not be described in detail here.

[0558] It should be understood that in an embodiment of the present application, the input unit 1504 may include a graphics processing unit (GPU) 15041 and a microphone 15042, and the graphics processing unit 15041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include two parts: a touch detection device and a touch controller. Other input devices 15072 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.

[0559] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1501 may transmit the data to the processor 1510 for processing. Furthermore, the radio frequency unit 1501 may send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0560] The memory 1509 can be used to store software programs or instructions and various data. The memory 1509 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, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1509 may include a volatile memory or a non-volatile memory, or the memory 1509 may include both volatile and non-volatile memories. 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. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1509 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0561] Processor 1510 may include one or more processing units. Optionally, processor 1510 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1510.

[0562] In this embodiment, the above device is taken as the first device, and the first device is taken as the terminal for illustration.

[0563] Processor 1510 is configured to select m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N.

[0564] The radio frequency unit 1501 is used to send a target signal to the second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna index of the m antennas is used for index modulation, and the index modulation is used to transmit the first information to the second device.

[0565] Optionally, the target signal carries second information.

[0566] Optionally, the m antennas are m antennas selected and activated from the N candidate antennas.

[0567] Optionally, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, and x is a positive integer.

[0568] Optionally, the m antennas include:

[0569] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0570] Optionally, the radio frequency unit 1501 is further configured to:

[0571] Sending first information to a second device, where the first information includes at least one of the following:

[0572] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0573] Optionally, the antenna index modulation related information includes at least one of the following:

[0574] Indication information on whether antenna index modulation is enabled;

[0575] The number of candidate antennas;

[0576] a set of antenna indices of candidate antennas;

[0577] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0578] a mapping relationship between an activated antenna index and the first information;

[0579] a mapping relationship between activated antenna index combinations and the first information;

[0580] A mapping relationship between antennas and sequences of target signals;

[0581] A mapping relationship between antennas and frequency domain resources of the target signal;

[0582] A mapping relationship between antennas and time domain resources of the target signal;

[0583] The modulation order of the index modulation;

[0584] The number of antennas that are always active;

[0585] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0586] A set of antenna indices that are always active.

[0587] Optionally, the configuration information of the target signal includes at least one of the following:

[0588] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal mode of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

[0589] Optionally, the MIMO radar perception information includes at least one of the following:

[0590] Instructions for turning on MIMO radar sensing;

[0591] The number of antennas available for MIMO radar sensing;

[0592] A set of antenna indices that can be used for MIMO radar sensing.

[0593] Optionally, the measurement configuration information includes at least one of the following:

[0594] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0595] Optionally, the radio frequency unit 1501 is further configured to:

[0596] Performing perceptual measurement on the target signal to obtain a perceptual measurement result.

[0597] Optionally, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or an approximately orthogonal relationship with each other.

[0598] Optionally, the target signal sent by the target antenna adopts at least one of the following multiplexing modes:

[0599] Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM.

[0600] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0601] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0602] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0603] In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas in the target antenna adopt the same sequence, and the target signals sent by different antennas are mapped by time domain or frequency domain orthogonal cover codes OCC.

[0604] Optionally, the target signal sent by the target antenna includes at least one of the following:

[0605] Signal generated based on pseudo-random PN sequence;

[0606] Signal generated based on ZC sequence;

[0607] A signal generated based on a chirp signal.

[0608] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0609] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0610] At least one of the frequency modulation slope or the starting frequency of the Chirp signal is associated with the second information;

[0611] The second information includes at least one of the following:

[0612] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0613] The above device can improve the communication performance of the device.

[0614] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned perception measurement result sending method and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0615] It should be noted that the above-mentioned device can also implement the steps in the method shown in Figure 9, or can implement the method executed by each module shown in Figure 13.

[0616] The present application also provides an embodiment of a device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG9 . This device embodiment corresponds to the above-described method for receiving a perception signal, and each implementation process and implementation method of the above-described method embodiment are applicable to this device embodiment and can achieve the same technical effects.

[0617] An embodiment of the present application also provides a device, including a processor and a communication interface, wherein the communication interface is used to receive a target signal sent by a first device through a target antenna, the target antenna includes m antennas, the target signal is used for perception measurement, m is a positive integer, and the processor is used to demodulate based on the antenna index of the m antennas to obtain information transmitted by the antenna index of the m antennas.

[0618] Specifically, an embodiment of the present application further provides a device, which is a first device or a second device. As shown in Figure 16, the device 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information through the antenna 1601 and sends the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be sent and sends it to the radio frequency device 1602. The radio frequency device 1602 processes the received information and sends it through the antenna 1601.

[0619] The perception measurement method in the above embodiment may be implemented in the baseband device 1603 , which includes a baseband processor.

[0620] The baseband device 1603 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 16, one of the chips is, for example, a baseband processor, which is connected to the memory 1605 through a bus interface to call the program in the memory 1605 and execute the device operations shown in the above method embodiment.

[0621] The device may further include a network interface 1606 , such as a Common Public Radio Interface (CPRI).

[0622] Specifically, the device 1600 of the embodiment of the present application also includes: instructions or programs stored in the memory 1605 and executable on the processor 1604. The processor 1604 calls the instructions or programs in the memory 1605 to execute the methods executed by the modules shown in FIG13 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0623] In this embodiment, the above device is taken as an example for description as the second device.

[0624] The radio frequency device 1602 is configured to receive a target signal sent by the first device through a target antenna, where the target antenna includes m antennas, and the target signal is used for sensing and measurement, where m is a positive integer;

[0625] The processor 1604 is configured to perform demodulation based on the antenna indices of the m antennas to obtain information conveyed by the antenna indices of the m antennas.

[0626] Optionally, the target signal carries second information.

[0627] Optionally, the m antennas are m antennas selected and activated from N candidate antennas, where N is a positive integer greater than 1.

[0628] Optionally, the target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, N is a positive integer greater than 1, and x is a positive integer less than N.

[0629] Optionally, the m antennas include:

[0630] m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

[0631] Optionally, the radio frequency device 1602 is further configured to:

[0632] Receive first information sent by the first device, where the first information includes at least one of the following:

[0633] Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

[0634] Optionally, the antenna index modulation related information includes at least one of the following:

[0635] Indication information on whether antenna index modulation is enabled;

[0636] The number of candidate antennas;

[0637] a set of antenna indices of candidate antennas;

[0638] The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state;

[0639] a mapping relationship between an activated antenna index and the first information;

[0640] a mapping relationship between activated antenna index combinations and the first information;

[0641] A mapping relationship between antennas and sequences of target signals;

[0642] A mapping relationship between antennas and frequency domain resources of the target signal;

[0643] A mapping relationship between antennas and time domain resources of the target signal;

[0644] The modulation order of the index modulation;

[0645] The number of antennas that are always active;

[0646] The number of candidate antennas that are not in a normally activated state among the N candidate antennas;

[0647] A set of antenna indices that are always active.

[0648] Optionally, the configuration information of the target signal includes at least one of the following:

[0649] Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal mode of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

[0650] Optionally, the MIMO radar perception information includes at least one of the following:

[0651] Instructions for turning on MIMO radar sensing;

[0652] The number of antennas available for MIMO radar sensing;

[0653] A set of antenna indices that can be used for MIMO radar sensing.

[0654] Optionally, the measurement configuration information includes at least one of the following:

[0655] Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

[0656] Optionally, the radio frequency device 1602 is further configured to:

[0657] Performing perceptual measurement on the target signal to obtain a perceptual measurement result.

[0658] Optionally, the target signals sent to the second device through the target antenna satisfy an orthogonal relationship or an approximately orthogonal relationship with each other.

[0659] Optionally, the target signal sent by the target antenna adopts at least one of the following multiplexing modes:

[0660] Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM.

[0661] Optionally, when the target signal sent through the target antenna adopts TDM, time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or,

[0662] In a case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other.

[0663] Optionally, when the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or

[0664] In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas in the target antenna adopt the same sequence, and the target signals sent by different antennas are mapped by time domain or frequency domain orthogonal cover codes OCC.

[0665] Optionally, the target signal sent by the target antenna includes at least one of the following:

[0666] Signal generated based on pseudo-random PN sequence;

[0667] Signal generated based on ZC sequence;

[0668] Signal generated based on Chirp signal.

[0669] Optionally, at least one of an initial value, a primitive polynomial, a cyclic shift value, or a truncation position of the PN sequence is associated with the second information; or

[0670] At least one of the root sequence number or the cyclic shift value of the ZC sequence is associated with the second information; or

[0671] At least one of the frequency modulation slope or the starting frequency of the chirp signal is associated with the second information;

[0672] The second information includes at least one of the following:

[0673] Perception area identifier, indication information on whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier participating in the perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

[0674] The above device can improve the communication performance of the device.

[0675] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0676] It should be noted that the above-mentioned device can also implement the steps in the method shown in Figure 3, or can implement the method executed by each module shown in Figure 12.

[0677] An 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 various processes of the above-mentioned perception signal sending method or perception signal receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, they are not repeated here.

[0678] 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-transitory readable storage medium.

[0679] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned perception signal sending method or perception signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0680] 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.

[0681] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned perception signal sending method or perception signal receiving method embodiment, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0682] An embodiment of the present application further provides a wireless communication system, including: a first device and a second device, wherein the first device can be used to perform the steps of the perception signal sending method provided in the embodiment of the present application, and the second device can be used to perform the steps of the perception signal receiving method provided in the embodiment of the present application.

[0683] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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 a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments 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 the opposite 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.

[0684] Through the description of the above embodiments, 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-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0685] 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 this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for sending a perception signal, wherein: include: The first device selects m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N; The first device sends a target signal to the second device through a target antenna among the N candidate antennas, the target antenna includes the m antennas, the target signal is used for perception measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device.

2. The method of claim 1, wherein: The target signal carries second information.

3. The method according to claim 1 or 2, wherein: The m antennas are m antennas selected and activated from among the N candidate antennas.

4. The method according to any one of claims 1 to 3, wherein: The target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, and x is a positive integer.

5. The method according to any one of claims 1 to 4, wherein: The m antennas include: m antenna groups, m antenna panels, m antenna units, and m antenna ports, wherein each antenna port is mapped to at least one antenna unit.

6. The method according to any one of claims 1 to 5, wherein: The method further comprises: The first device sends first information to the second device, wherein the first information includes at least one of the following: Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

7. The method of claim 6, wherein: The antenna index modulation related information includes at least one of the following: Indication information of whether antenna index modulation is enabled; The number of candidate antennas; a set of antenna indices of candidate antennas; The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state; a mapping relationship between an activated antenna index and the first information; a mapping relationship between an activated antenna index combination and the first information; A mapping relationship between antennas and sequences of target signals; A mapping relationship between antennas and frequency domain resources of the target signal; A mapping relationship between antennas and time domain resources of the target signal; The modulation order of the index modulation; The number of antennas that are normally active; The number of candidate antennas that are not in a normally activated state among the N candidate antennas; A set of antenna indices that are always active.

8. The method according to claim 6 or 7, wherein: The configuration information of the target signal includes at least one of the following: Signal resource identification, signal purpose, waveform, subcarrier spacing, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, time domain resource characteristics, signal power, sequence information, signal direction, quasi-co-site QCL relationship, cyclic prefix information, orthogonal method of target signal sent through the target antenna, multiple-input multiple-output MIMO radar perception information.

9. The method of claim 8, wherein: The MIMO radar perception information includes at least one of the following: Instructions for turning on MIMO radar sensing; The number of antennas available for MIMO radar sensing; A collection of antenna indices that can be used for MIMO radar sensing.

10. The method according to any one of claims 6 to 9, wherein: The measurement configuration information includes at least one of the following: Measured signal resource indication, perception measurement quantity, and measurement result reporting configuration.

11. The method according to any one of claims 1 to 10, wherein: The method further comprises: The first device performs perception measurement on the target signal to obtain a perception measurement result.

12. The method according to any one of claims 1 to 11, wherein: The target signals sent to the second device through the target antenna satisfy an orthogonal relationship or a nearly orthogonal relationship with each other.

13. The method according to any one of claims 1 to 12, wherein: The target signal sent by the target antenna adopts at least one of the following multiplexing methods: Code division multiplexing CDM, frequency division multiplexing FDM, time division multiplexing TDM; Wherein, when the target signal sent through the target antenna adopts TDM, the time domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or, In the case where the target signal sent through the target antenna adopts FDM, the frequency domain resource positions occupied by the target signal sent to the second device through the target antenna do not overlap with each other; or, In the case where the target signal sent through the target antenna adopts CDM, the target signal sent by different antennas among the target antennas adopts different sequences; or In the case where the target signal sent through the target antenna adopts CDM, the target signals sent by different antennas among the target antennas adopt the same sequence, and the target signals sent by different antennas are mapped through time domain or frequency domain orthogonal cover codes OCC.

14. The method according to any one of claims 1 to 13, wherein: The target signal sent by the target antenna includes at least one of the following: A signal generated based on a pseudo-random PN sequence; Signal generated based on ZC sequence; Signal generated based on chirp signal.

15. The method of claim 14, wherein: At least one of the initial value, primitive polynomial, cyclic shift value or truncation position of the PN sequence is associated with the second information; or At least one of a root sequence number or a cyclic shift value of the ZC sequence is associated with the second information; or At least one of the frequency modulation slope or the starting frequency of the Chirp signal is associated with the second information; The second information includes at least one of the following: Perception area identifier, indication information whether used for perception, perception service identifier, perception service type identifier, perception target identifier, tag identifier associated with the perception target, number of perception targets, perception measurement quantity identifier, device identifier involved in perception measurement, time domain resource information, frequency domain resource information, antenna index, maximum number of antennas, codeword index.

16. A method for receiving a perception signal, wherein: include: The second device receives a target signal sent by the first device through a target antenna, where the target antenna includes m antennas, and the target signal is used for sensing measurement, where m is a positive integer; The second device performs demodulation based on the antenna indexes of the m antennas to obtain first information transmitted by the antenna indexes of the m antennas.

17. The method of claim 16, wherein: The target signal carries second information.

18. The method according to claim 16 or 17, wherein: The m antennas are m antennas selected and activated from N candidate antennas, where N is a positive integer greater than 1.

19. The method according to any one of claims 16 to 18, wherein: The target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, N is a positive integer greater than 1, and x is a positive integer less than N.

20. The method according to any one of claims 16 to 19, wherein: The method further comprises: The second device receives first information sent by the first device, wherein the first information includes at least one of the following: Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

21. The method according to any one of claims 16 to 20, wherein: The method further comprises: The second device performs a perception measurement on the target signal to obtain a perception measurement result.

22. A perception signal sending device, wherein: include: A selection module, configured to select m antennas from N candidate antennas, where N is an integer greater than 1, and m is an integer greater than 1 and less than or equal to N; A first sending module is used to send a target signal to a second device through a target antenna among the N candidate antennas, where the target antenna includes the m antennas, the target signal is used for sensing measurement, and the antenna indexes of the m antennas are used for index modulation, and the index modulation is used to transmit first information to the second device.

23. The device of claim 22, wherein: The target antenna further includes x antennas, where the x antennas are x antennas in a normally activated state among the N candidate antennas, and x is a positive integer.

24. The device according to claim 22 or 23, wherein: The device also includes: A sending module, configured to send first information to a second device, wherein the first information includes at least one of the following: Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

25. The device according to any one of claims 22 to 24, wherein: The antenna index modulation related information includes at least one of the following: Indication information of whether antenna index modulation is enabled; The number of candidate antennas; a set of antenna indices of candidate antennas; The number of antennas activated during modulation among the N candidate antennas that are not in a normally activated state; a mapping relationship between an activated antenna index and the first information; a mapping relationship between an activated antenna index combination and the first information; A mapping relationship between antennas and sequences of target signals; A mapping relationship between antennas and frequency domain resources of the target signal; A mapping relationship between antennas and time domain resources of the target signal; The modulation order of the index modulation; The number of antennas that are normally active; The number of candidate antennas that are not in a normally activated state among the N candidate antennas; A set of antenna indices that are always active.

26. The device according to any one of claims 22 to 25, wherein: The device also includes: The measurement module is used to perform perceptual measurement on the target signal to obtain a perceptual measurement result.

27. A perception signal receiving device, wherein: include: A first receiving module, configured to receive a target signal sent by a first device through a target antenna, wherein the target antenna includes m antennas, and the target signal is used for sensing and measurement, where m is a positive integer; The demodulation module is used to perform demodulation based on the antenna indexes of the m antennas to obtain information transmitted by the antenna indexes of the m antennas.

28. The apparatus of claim 27, wherein: The device also includes: The second receiving module is configured to receive first information sent by the first device, wherein the first information includes at least one of the following: Related information of antenna index modulation, configuration information of the target signal, and measurement configuration information.

29. The device according to claim 27 or 28, wherein The device also includes: The measurement module is used to perform perceptual measurement on the target signal to obtain a perceptual measurement result.

30. A device, wherein: The method comprises a processor and a memory, wherein 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, the steps of the method for sending a perception signal according to any one of claims 1 to 15 are implemented, or when the program or instruction is executed by the processor, the steps of the method for receiving a perception signal according to any one of claims 16 to 21 are implemented.

31. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the method for sending a perception signal according to any one of claims 1 to 15 are implemented, or the steps of the method for receiving a perception signal according to any one of claims 16 to 21 are implemented.

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