Signal sending and receiving method and device

Abstract

A signal sending and receiving method and device, the signal sending method comprising: determining a first signal and a first resource, the first signal being used for bearing downlink control information, the first signal comprising N signal elements, the signals corresponding to the N signal elements being the same, the first resource comprising N resource groups, any resource group in the N resource groups comprises M subcarriers on one time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, M is a positive integer, and N is a positive integer greater than or equal to 2; and sending the first signal on the first resource, wherein the N signal elements are in one-to-one correspondence with the N resource groups. According to the method, the sensing performance in a device networking scene can be improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a method and device for sending and receiving a signal. Background Art

[0002] In the process of the evolution of the fifth generation mobile communication system (5G) to 5G-Advanced (5G-A) technology, communication and perception integration technology is considered to be one of the key technologies that can expand the service capabilities of mobile communication networks. The core idea of ​​this technology is to add perception capabilities to the mobile communication network and build the ability to detect, track and image the target, so that the two capabilities of communication and perception can be integrated into one network to achieve harmonious coexistence and even mutual benefit. How to improve the perception performance in networking scenarios is an urgent problem to be solved. Summary of the invention

[0003] The present application provides a signal sending and receiving method and device, which modulates a control channel into at least two identical signal elements and maps at least two symbols in at least two time units for transmission. On the one hand, it can reduce interference between network devices in a networking scenario and improve the ability of network devices to perceive using the control channel. On the other hand, it can improve the ability of terminal devices to perceive using the control channel.

[0004] In the first aspect, a signal sending method is provided, which can be executed by a network device, or by a module applied to the network device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the network device function.

[0005] The method includes: determining a first signal and a first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group in the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; sending the first signal on the first resource, the N signal elements correspond one-to-one to the N resource groups.

[0006] It should be understood that N resource groups corresponding to N time domain symbols can be understood as each time domain symbol includes a resource group, so there are N time domain symbols corresponding to N resource groups; N time domain symbols corresponding to at least two time units can be understood as one time unit can include one or more time domain symbols, and N time domain symbols are included in two or more time units; N signal elements correspond one-to-one with N resource groups can be understood as each signal element is sent on a resource group, so N signal elements require N resource groups to be sent. Similar expressions in the embodiments of the present application can be understood in this way, and will not be repeated below.

[0007] According to the solution of the present application, by making the control channel include at least two symbols in at least two time slots, and the signals mapped on different time domain symbols in one control channel are the same, the perceived performance in the networking scenario can be improved.

[0008] In combination with the first aspect, in some implementations of the first aspect, the method further includes: receiving an echo signal of the first signal; and performing sensing according to the echo signal.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: sending first indication information, the first indication information being used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0010] The number N of signal elements included in the first signal may also be determined by indicating the number N of resource groups of the first resource, or may also be determined by indicating the time domain positions of N resource groups and the number of time units corresponding to N time domain symbols.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: sending second indication information, the second indication information is used to indicate configuration information of a second signal, the second signal is used to carry downlink control information, the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes the number of time domain symbols occupied by the second signal in a time unit, the symbol index of the time domain symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and at least one of the subcarrier indexes occupied by the second signal; sending the second signal, wherein the time domain symbol occupied by the second signal belongs to a time unit.

[0013] The second signal is only used for communication, not for perception. The second indication information is used to indicate the configuration information of the pure communication control channel, and is carried on the same resource as the configuration information used to indicate the communication perception control channel.

[0014] On the second aspect, a signal receiving method is provided, which can be executed by a terminal device, or by a module applied to the terminal device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the terminal device functions.

[0015] The method includes: determining a first resource, the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; receiving a first signal on the first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

[0016] According to the solution of the present application, by making the control channel include at least two symbols in at least two time slots, and the signals mapped on different symbols in one control channel are the same, the perceived performance in the networking scenario can be improved.

[0017] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sensing according to the first signal.

[0018] It should be understood that the first signal may be a first signal after being refracted and / or reflected by the sensing target.

[0019] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: receiving first indication information, the first indication information being used to indicate the number of signal elements N included in the first signal, the number of subcarriers M included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0020] The number N of signal elements included in the first signal may also be determined by indicating the number N of resource groups of the first resource, or may also be determined by indicating the time domain positions of N resource groups and the number of time units corresponding to N time domain symbols.

[0021] In combination with the second aspect, in certain implementations of the second aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0022] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: receiving second indication information, the second indication information being used to indicate configuration information of a second signal, the second signal being used to carry downlink control information, the second indication information and the first indication information being carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; receiving the second signal, wherein the symbol occupied by the second signal belongs to a time unit.

[0023] On the third aspect, a signal receiving method is provided, which can be executed by a network device, or by a module applied to the network device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the functions of the network device.

[0024] The method includes: receiving an echo signal of a first signal on a first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group in the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, N is a positive integer greater than or equal to 2, and the N signal elements correspond one-to-one to the N resource groups; and sensing is performed according to the echo signal.

[0025] In a fourth aspect, a signal sending method is provided, which can be executed by a network device, or by a module applied to the network device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the functions of the network device.

[0026] The method includes: determining a first signal and a first resource, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; sending the first signal on the first resource, the N signal elements correspond one-to-one to the N resource groups.

[0027] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first signal is used to carry downlink control information.

[0028] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: receiving an echo signal of the first signal; and performing sensing based on the echo signal.

[0029] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method also includes: sending first indication information, the first indication information being used to indicate the number of signal elements N included in the first signal, the number of subcarriers M included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0030] The number N of signal elements included in the first signal may also be determined by indicating the number N of resource groups of the first resource, or may also be determined by indicating the time domain positions of N resource groups and the number of time units corresponding to N time domain symbols.

[0031] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0032] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method also includes: sending second indication information, the second indication information is used to indicate configuration information of a second signal, the second signal is used to carry downlink control information, the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes the number of time domain symbols occupied by the second signal in a time unit, the symbol index of the time domain symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and at least one of the subcarrier index occupied by the second signal; sending the second signal, wherein the time domain symbol occupied by the second signal belongs to a time unit.

[0033] In the fifth aspect, a signal receiving method is provided, which can be executed by a terminal device, or by a module applied to the terminal device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the functions of the terminal device.

[0034] The method includes: determining a first resource, the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; receiving a first signal on the first resource, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

[0035] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first signal is used to carry downlink control information.

[0036] In combination with the fifth aspect, in some implementations of the fifth aspect, the method also includes: sensing based on the first signal.

[0037] In combination with the fifth aspect, in certain implementations of the fifth aspect, the method also includes: receiving first indication information, the first indication information being used to indicate the number of signal elements N included in the first signal, the number of subcarriers M included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0038] The number N of signal elements included in the first signal may also be determined by indicating the number N of resource groups of the first resource, or may also be determined by indicating the time domain positions of N resource groups and the number of time units corresponding to N time domain symbols.

[0039] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0040] In combination with the fifth aspect, in certain implementations of the fifth aspect, the method also includes: receiving second indication information, the second indication information being used to indicate configuration information of a second signal, the second signal being used to carry downlink control information, the second indication information and the first indication information being carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; receiving the second signal, wherein the symbol occupied by the second signal belongs to a time unit.

[0041] In the sixth aspect, a signal receiving method is provided, which can be executed by a network device, or by a module applied to the network device (such as a processor, chip, or chip system, etc.), or by a logical node, logical module or software that can realize all or part of the functions of the network device.

[0042] The method includes: receiving an echo signal of a first signal on a first resource, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, N is a positive integer greater than or equal to 2, and the N signal elements correspond one-to-one to the N resource groups; and sensing is performed according to the echo signal.

[0043] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first signal is used to carry downlink control information.

[0044] In the seventh aspect, a signal sending device is provided, the device including: a device for determining a first signal and a first resource, the first signal being used to carry downlink control information, the first signal including N signal elements, the signals corresponding to the N signal elements being the same, the first resource including N resource groups, any one of the N resource groups including M subcarriers on a time domain symbol, the N resource groups corresponding to N time domain symbols, the N time domain symbols corresponding to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; an interface unit, used to send the first signal on the first resource, the N signal elements corresponding one-to-one to the N resource groups.

[0045] In combination with the seventh aspect, in certain implementations of the seventh aspect, the interface unit is further used to: receive an echo signal of the first signal; and the processing unit is further used to: perform perception based on the echo signal.

[0046] In combination with the seventh aspect, in certain implementations of the seventh aspect, the interface unit is also used to: send first indication information, the first indication information being used to indicate the number of signal elements N included in the first signal, the number of subcarriers M included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0047] In combination with the seventh aspect, in certain implementations of the seventh aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0048] In combination with the seventh aspect, in certain implementations of the seventh aspect, the interface unit is also used to: send second indication information, the second indication information is used to indicate configuration information of the second signal, the second signal is used to carry downlink control information, the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and at least one of the subcarrier index occupied by the second signal; send the second signal, wherein the symbol occupied by the second signal belongs to a time unit.

[0049] In the eighth aspect, a signal receiving device is provided, which includes: a processing unit, used to determine a first resource, the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; an interface unit, receiving a first signal on the first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

[0050] In combination with the eighth aspect, in certain implementations of the eighth aspect, the processing unit is further used to: perform perception based on the first signal.

[0051] In combination with the eighth aspect, in certain implementations of the eighth aspect, the interface unit is also used to: receive first indication information, the first indication information being used to indicate the number of signal elements N included in the first signal, the number of subcarriers M included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0052] In combination with the eighth aspect, in certain implementations of the eighth aspect, the first indication information is carried on any one of the physical broadcast channel PBCH, the system information block SIB, the radio resource management RRC signaling, the media access control MAC signaling, and the downlink control information DCI.

[0053] In combination with the eighth aspect, in certain implementations of the eighth aspect, the interface unit is further used to: receive second indication information, the second indication information being used to indicate configuration information of a second signal, the second signal being used to carry downlink control information, the second indication information and the first indication information being carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; receive the second signal, wherein the symbol occupied by the second signal belongs to a time unit.

[0054] In the ninth aspect, a signal receiving device is provided, which includes: an interface unit, used to receive an echo signal of a first signal on a first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, N is a positive integer greater than or equal to 2, and the N signal elements correspond one-to-one to the N resource groups; a processing unit, sensing according to the echo signal.

[0055] In the tenth aspect, a signal sending and receiving device is provided, which may be a network device, or a component of a network device (such as a processor, chip, or chip system), or a logical node, logic module, or software that can implement all or part of the functions of a network device. The device has the function of implementing the above-mentioned first aspect, third aspect, fourth aspect, or sixth aspect and the corresponding possible implementation methods. The function can be implemented by hardware, or it can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0056] In one possible design, the device includes: an interface unit, which may be at least one of a transceiver, a receiver, and a transmitter, and the interface unit may include a radio frequency circuit or an antenna. Optionally, the device also includes a processing unit, which may be a processor. Optionally, the device also includes a storage unit, which may be, for example, a memory. When a storage unit is included, the storage unit is used to store programs or instructions. The processing unit is connected to the storage unit, and the processing unit may execute programs, instructions, or instructions derived from other sources stored in the storage unit, so that the device performs the signal sending and receiving method of the above-mentioned first aspect or third aspect or fourth aspect or sixth aspect and corresponding possible implementation methods. In this design, the device may be a network device.

[0057] In another possible design, when the device is a chip, the chip includes: an interface unit and a processing unit, and the interface unit may be, for example, an input / output interface, a pin or a circuit on the chip. The processing unit may be, for example, a processor. The processing unit may execute instructions so that the chip in the network device executes the signal sending and receiving method of the first aspect, the third aspect, the fourth aspect or the sixth aspect and the corresponding possible implementation methods. Optionally, the processing unit may execute instructions in a storage unit, and the storage unit may be a storage module in the chip, such as a register, a cache, etc. The storage unit may also be located in the communication device but outside the chip, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0058] Among them, the processor mentioned in any of the above places can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the signal sending and receiving method of the first aspect, the third aspect, the fourth aspect, or the sixth aspect mentioned above.

[0059] In the eleventh aspect, a signal receiving device is provided, which may be a terminal device, or a component of a terminal device (such as a processor, a chip, or a chip system), or a logical node, a logical module, or software that can implement all or part of the functions of a network device. The device has the function of implementing the second aspect or the fifth aspect and the corresponding various possible implementation methods. The function can be implemented by hardware, or it can be implemented by hardware executing the corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0060] In one possible design, the device includes: an interface unit, which may be at least one of a transceiver, a receiver, and a transmitter, and the interface unit may include a radio frequency circuit or an antenna. Optionally, the device also includes a processing unit, which may be a processor. Optionally, the device also includes a storage unit, which may be, for example, a memory. When a storage unit is included, the storage unit is used to store programs or instructions. The processing unit is connected to the storage unit, and the processing unit may execute programs, instructions, or instructions derived from other sources stored in the storage unit, so that the device performs the signal receiving method of the second aspect or the fifth aspect and the corresponding various possible implementations. In this design, the device may be a terminal device.

[0061] In another possible design, when the device is a chip, the chip includes: an interface unit and a processing unit, and the interface unit may be, for example, an input / output interface, a pin or a circuit on the chip. The processing unit may be, for example, a processor. The processing unit may execute instructions so that the chip in the network device executes the signal receiving method of the second aspect or the fifth aspect and the corresponding various possible implementations. Optionally, the processing unit may execute instructions in a storage unit, and the storage unit may be a storage module in the chip, such as a register, a cache, etc. The storage unit may also be located in the communication device but outside the chip, such as a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM), etc.

[0062] Among them, the processor mentioned in any of the above places can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the signal receiving method of the second aspect or the fifth aspect mentioned above.

[0063] In the twelfth aspect, a communication system is provided, the communication system comprising the communication device provided in the seventh aspect or the ninth aspect and the communication device provided in the eighth aspect. The communication system can implement the data transmission method provided in any possible implementation of the first to sixth aspects or the first to sixth aspects.

[0064] In the thirteenth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program runs on a computer, the computer executes instructions of the method of any possible implementation of the first to sixth aspects or the first to sixth aspects.

[0065] In a fourteenth aspect, a chip is provided, comprising: a processing unit, which can execute instructions to enable the method of any possible implementation method of the above-mentioned first to sixth aspects or the first to sixth aspects to be executed.

[0066] In a fifteenth aspect, a computer program product is provided, which includes a computer program code, and when the computer program code is run, it is used to execute instructions of the method of any possible implementation of the first to sixth aspects or the first to sixth aspects.

[0067] In the sixteenth aspect, a chip system is provided, including a memory and a processor, wherein the memory is used to store instructions, and the processor is used to call and execute the instructions from the memory, so that the methods in the above-mentioned first to sixth aspects and possible implementation methods are executed.

[0068] Among them, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0069] Specifically, the beneficial effects of other aspects can refer to the beneficial effects described in the first aspect and the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 is a possible system schematic diagram applicable to the embodiment of the present application;

[0071] Figure 2 is a schematic diagram of a possible perceptual pattern;

[0072] Figure 3 is a possible schematic diagram of control channel symbol distribution;

[0073] Figure 4 This is a schematic diagram of sensing signal interference in a networking scenario;

[0074] Figure 5 This is a flow chart of a signal sending and receiving method provided by an embodiment of the present application;

[0075] Figure 6 This is a possible resource distribution diagram provided by an embodiment of the present application;

[0076] Figure 7 is another possible resource distribution schematic diagram provided in an embodiment of the present application;

[0077] Figure 8-Figure 10 It is a schematic block diagram of several communication devices provided in this application. DETAILED DESCRIPTION

[0078] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0079] The technical solution of the embodiment of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), LTE system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR) and other evolved communication systems, vehicle-to-X V2X, where V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2I), etc. pedestrian, V2P), long term evolution-vehicle (LTE-V), Internet of Vehicles, machine type communication (MTC), Internet of Things (IoT), long term evolution-machine (LTE-M), machine to machine (M2M), device to device (D2D), etc.

[0080] The terminal device in the embodiments of the present application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in an evolved public land mobile network (PLMN), etc., and the embodiments of the present application are not limited to this. For example, the terminal device can be an on-board device, a complete vehicle device, an on-board module, a vehicle, an on-board unit (OBU), a roadside unit (RSU), a telematics box (T-box), a chip or a system on chip (SOC), etc. The above chip or SOC can be installed in a vehicle, OBU, RSU or T-box.

[0081] The terminal devices involved in the embodiments of the present application also include at least one of user equipment, augmented reality AR / virtual reality VR / extended reality XR devices, wearable devices, smart home appliance terminals, terminal devices and communication modules of terminal devices, mobile phones and communication modules in mobile phones, vehicles and communication modules in vehicles, information processing devices, display devices, network devices, base stations, TRPs, customer premise equipment (CPE), routers, network access devices, etc. Considering Uu (UTRAN-to-terminal equipment) air interface transmission, the two parties of wireless communication include network devices and user communication equipment; considering SL air interface transmission, the transceiver ends of wireless communication are both user communication equipment. The network device can be a traditional macro base station eNB in ​​a traditional UMTS / LTE wireless communication system, a micro base station eNB in ​​a heterogeneous network (HetNet) scenario, a baseband processing unit (base band unit, BBU) and a remote radio unit (remote radio unit, RRU) in a distributed base station scenario, a baseband pool BBU pool and a radio unit RRU in a CRAN scenario, and a gNB in ​​a wireless communication system.

[0082] In the embodiment of the present application, the network device may be any device with wireless transceiver function. The device includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or homeNode B, HNB), baseband unit (BBU), access point (AP) in wireless fidelity (WiFi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc., and can also be a gNB in ​​5G, such as NR, system, or a transmission point (TRP or TP), one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc.

[0083] In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some functions of the gNB, and the DU implements some functions of the gNB, for example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. The AAU implements some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or, sent by the DU+AAU. It can be understood that the network device can be a device including one or more of a CU node, a DU node, and an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or the CU may be classified as a network device in a core network (core network, CN), which is not limited in the present application.

[0084] The network equipment provides services for the cell, and the terminal equipment communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network equipment. The cell can belong to a macro base station (for example, macro eNB or macro gNB, etc.), or it can belong to a base station corresponding to a small cell. The small cell here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0085] Figure 1 is a possible, non-limiting system schematic diagram applicable to embodiments of the present application.

[0086] like Figure 1 As shown, the communication system includes a radio access network (RAN) 100. The RAN 100 includes at least one RAN node (eg Figure 1 110a and 110b in, collectively referred to as 110) and at least one terminal device (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 may be different physical devices, or may be the same physical device that integrates the core network logical function and the radio access network logical function.

[0087] RAN 100 may be a cellular system related to the third generation partnership project (3GPP), for example, a 4G, 5G mobile communication system, or a future evolution system (for example, a 6G mobile communication system). RAN 100 may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a wireless fidelity (wireless fidelity, WiFi) system. RAN 100 may also be a communication system that integrates two or more of the above systems.

[0088] The RAN node 110, which may also be sometimes referred to as an access network device, a network device, a RAN entity or an access node, constitutes a part of a communication system to help a terminal achieve wireless access. Multiple RAN nodes 110 in a communication system may be nodes of the same type or nodes of different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, for example, Figure 1 The network element 120i may be a helicopter or a drone, which may be configured as a mobile base station. For the terminals 120j that access the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN node 110 and the terminal 120 are sometimes referred to as communication devices, for example Figure 1 The network elements 110a and 110b may be understood as communication devices having base station functions, and the network elements 120a-120j may be understood as communication devices having terminal functions.

[0089] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system. A RAN node may be a macro base station (e.g. Figure 1 110a in), micro base stations or indoor stations (such as Figure 1 110b in the description), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in the present application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The RAN node in the present application may also be a logical node, a logical module or software that can implement all or part of the functions of the RAN node.

[0090] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0091] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0092] The RAN node may also be expressed in different ways. In this application, unless otherwise specified, the network device is used for expression.

[0093] It should be understood that the above Figure 1 This is only a schematic diagram, and other devices not shown may also be included. In addition, the embodiment of the present application does not limit the number of terminal devices and network devices included in the communication system.

[0094] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the present application does not specifically limit the specific structure of the execution subject of the method provided by the present application, as long as it can communicate according to the method provided by the embodiment of the present application by running a program having a code of the method provided by the present application, for example, the execution subject of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.

[0095] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0096] In this application, "sending information to...(terminal)" can be understood as the destination of the information being the terminal. It can include sending information to the terminal directly or indirectly. "Receiving information from...(terminal)" can be understood as the source of the information being the terminal, which can include receiving information from the terminal directly or indirectly. The information may be processed as necessary between the source and destination of the information, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated here.

[0097] In order to facilitate understanding of the embodiments of the present application, first, a brief introduction is given to the concepts and technologies involved in the embodiments of the application.

[0098] It should be understood that the related terms and explanations in the following text are common to all embodiments throughout the text, and different embodiments can be used independently or in combination based on certain internal or external connections, and different implementation methods in the embodiments can be used independently or in combination.

[0099] 1. Subcarrier

[0100] In the OFDM system, the frequency domain resources are divided into several sub-resources, each of which is called a sub-carrier. A sub-carrier can also be understood as the minimum granularity of frequency domain resources.

[0101] 2. Subcarrier spacing

[0102] In an OFDM system, the spacing between the center positions or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in an LTE system is 15kHz, and the subcarrier spacing in a 5G NR system can be 15kHz, 30kHz, 60kHz, or 120kHz, etc.

[0103] 3. Resource Block

[0104] N consecutive subcarriers in the frequency domain can be called a resource block. For example, a resource block in the LTE system includes 12 subcarriers, and a resource block in the NR system in 5G also includes 12 subcarriers. As the communication system evolves, the number of subcarriers included in a resource block can also be other values.

[0105] 4. Time slot

[0106] In the 5G NR system, a time slot includes 14 OFDM symbols. The time slot length corresponding to the 15kHz subcarrier spacing is 1ms, and the time slot length corresponding to the 30kHz subcarrier spacing is 0.5ms.

[0107] 5. Subframe

[0108] The duration of a subframe in the 5G NR system is 1ms.

[0109] 6. OFDM Symbols

[0110] An OFDM symbol is the smallest time unit in the time domain in an OFDM system.

[0111] 7. Time-frequency resource unit

[0112] The smallest resource granularity in the OFDM system is an OFDM symbol in the time domain and a subcarrier in the frequency domain.

[0113] 8. Dedicated demodulation reference signal (DMRS)

[0114] DMRS is used to estimate the equivalent channel matrix of the data channel or the control channel, so as to recover the received signal. DMRS is a signal known to the receiving end. The receiving end can determine the fading characteristics of the wireless channel, that is, the channel coefficient of the wireless channel, based on the received signal and the known DMRS signal, to recover the received signal. Exemplarily, the data channel can be a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH). Exemplarily, the control channel can be a physical downlink control channel (PDCCH).

[0115] Taking the data channel PDSCH as an example, DMRS is usually precoded in the same way as the transmitted data signal, thereby ensuring that DMRS and data experience the same equivalent channel.

[0116] In order to reduce the mutual interference between the DMRS resources corresponding to multiple DMRS ports, resource mapping can be performed by frequency division multiplexing, time division multiplexing or code division multiplexing. R15 supports two types of DMRS resource mapping (respectively marked as type 1 and type 2). For type 1 DMRS, a maximum of 8 orthogonal DMRS ports can be supported; for type 2 DMRS, a maximum of 12 orthogonal DMRS ports can be supported.

[0117] 9. Perception

[0118] The technical principle of perception is somewhat different from that of communication. In communication, the transmitter modulates information on radio waves and sends it to the receiver, which then demodulates the signal carried on the radio waves to obtain the information. However, perception requires the transmitter to send radio waves in a specific direction. When the radio waves hit the surface of the target, reflected radio waves are formed. The receiver then receives and processes the reflected radio waves to obtain information such as the target's location, speed, and type.

[0119] A perception signal refers to a signal used to perceive a target or detect a target, or in other words, a perception signal refers to a signal used to perceive environmental information or detect environmental information. For example, a perception signal is an electromagnetic wave sent by a network device to perceive environmental information. A perception signal may also be referred to as a radar signal, a radar perception signal, a detection signal, a radar detection signal, an environmental perception signal, etc., which is not limited in the embodiments of the present application.

[0120] like Figure 2As shown, perception can usually be divided into two types from the mode: single-station perception and dual-station perception. In single-station perception, the transmitter and receiver of the perception signal are the same device. From the perspective of the perception signal process, the perception site must both send the perception signal and receive the signal reflected by the perception signal on the target surface. Therefore, the single-station perception mode is also called the self-transmitting and self-receiving mode. For dual-station perception, the transmitter and receiver of the perception signal are two different devices. From the perspective of the perception signal process, after the perception site A sends the perception signal, the signal reflected by the signal on the target surface is received by the perception site B. Therefore, the dual-station perception mode is also called the A-transmitting and B-receiving mode.

[0121] The sensing site can be a network device or a terminal device.

[0122] The sensed target may include various tangible objects on the ground that can be sensed, such as mountains, forests or buildings, and may also include movable objects such as vehicles, drones, pedestrians, and terminal devices. The sensed target is a target that can be sensed by a network device with a sensing function, and the target can feedback electromagnetic waves to the network device. The sensed target may also be referred to as a detected target, a sensed object, a detected object or a sensed device, etc., which is not limited in the embodiments of the present application.

[0123] 10. Modulation and coding scheme (MCS)

[0124] Modulation methods include quadrature phase shift keying (QPSK) modulation and quadrature amplitude modulation (QAM), and QAM includes 16QAM, 64QAM and 256QAM. For terminals with good channel quality, network equipment often uses relatively high-order modulation methods, such as 256QAM or 64QAM to send downlink signals to terminal devices to obtain higher communication rates. For terminals with poor channel quality, network equipment uses relatively low-order modulation methods, such as QPSK or 16QAM to send downlink signals to terminals to ensure communication reliability. In addition to modulation methods, MCS also includes coding rate, which is often expressed as a decimal or fraction greater than 0 and less than or equal to 1, such as 1 / 2, 2 / 3, etc. The lower the coding rate, the more redundant bits are added, the higher the communication reliability, but the lower the communication efficiency. Therefore, for terminals with better channel quality, network equipment often uses a higher coding rate to maintain higher communication efficiency; while for terminal devices with poorer channel quality, network equipment uses a relatively lower coding rate to ensure higher communication reliability.

[0125] Table 1 shows a possible definition of an MCS table. The MCS table may include an MCS index, a modulation order, and a target code rate. When the MCS index is obtained, the modulation order and the target code rate corresponding to the MCS index can be determined from a table such as Table 1 according to the MCS index. It should be understood that Table 1 is a type of MCS table, and the embodiments of the present application do not limit the MCS table.

[0126] Table 1. MCS index correspondence table

[0127]

[0128] 11. Control Channel

[0129] In a wireless communication system, communication can be divided into different types according to the types of sending nodes and receiving nodes. Generally, the sending of information from a network device to a terminal device is called downlink communication, and the sending of information from a terminal device to a network device is called uplink communication. In the long-term evolution LTE / long-term evolution advanced (LTE-A) communication system and the new air interface NR system, according to the different duplex modes, it can be mainly divided into frequency division duplex FDD mode and time division duplex TDD mode. For a wireless communication system operating in TDD mode, the downlink carrier and uplink carrier of the system are carriers of the same carrier frequency. The multiple access method usually adopts the orthogonal frequency division multiplexing access (OFDMA) method. The main feature of the orthogonal frequency division multiplexing access method is that the transmission resources are divided into mutually orthogonal time-frequency resource elements (RE). The signals sent by the transmitter are carried on the RE and transmitted to the receiver. Since different REs are orthogonal to each other, the receiver can receive the signal sent on each RE separately.

[0130] The 5G-NR system defines a control resource set (CORESET). A control resource set includes several resource blocks in the frequency domain and K consecutive symbols in the time domain. The value of K can be one of {1, 2, 3}. The network device will send a physical downlink control channel PDCCH to the terminal device in the control resource set. The PDCCH carries the downlink control information (DCI) sent by the network device. For the control channel, 5G-NR defines a control channel element (CCE). A CCE includes 6 resource element groups (REGs). A REG is all the resource elements RE in a resource block in an OFDM symbol. In the current 5G-NR, a REG includes 12 REs. A DCI can be carried in L CCEs, and the value of L can be one of {1, 2, 4, 8, 16}. In 5G-NR technology, when a terminal device accesses the 5G-NR system, it first receives the SSB sent by the network device. The physical broadcast channel PBCH carries the time domain and frequency domain configuration of the control resource set that instructs the terminal device to detect the PDCCH. The terminal device then determines the configuration of the control resource set based on the PBCH's instructions to receive the PDCCH and obtain the DCI therein.

[0131] The network device sends a control channel on the first K={1, 2, 3} symbols of a downlink time slot, and the control channels in different time slots are different. In a possible implementation, as Figure 3 As shown, the control channel occupies the first 2 symbols of each downlink time slot.

[0132] When sensing using the control channel, such as Figure 4 As shown, in the scenario where multiple network devices are networked, when network device 1 receives the echo signal of the control channel for perception, the control channel sent by network device 2 will cause strong interference to the perception of network device 1. Similarly, the control channel sent by network device 1 will also cause strong interference to the perception of network device 2, which will cause a significant decrease in the perception performance of the two network devices. At the same time, the different control channels in different time slots will also reduce the performance of the terminal device using the control channel for perception.

[0133] In order to improve the perception performance of network devices and terminal devices when using control channels for perception, the present application provides an information transmission method 200.

[0134] It can be understood that the schematic diagram of the method in the present application uses the network device and the terminal device as the execution subject of the interactive schematic diagram to illustrate the method, but the present application does not limit the execution subject of the interactive schematic diagram. For example, the network device in the figure can also be a module (such as a chip, a chip system, or a processor) applied to the network device, and can also be a logical node, a logical module, or software that can realize all or part of the functions of the network device; the terminal device in the figure can also be a module (such as a chip, a chip system, or a processor) applied to the terminal device, and can also be a logical node, a logical module, or software that can realize all or part of the functions of the terminal device.

[0135] like Figure 5 As shown, the method 200 includes at least the following steps, and it should be noted that: Figure 5 The steps indicated by dashed lines are optional and will not be described in detail in the following text:

[0136] S210, the network device determines a first signal and a first resource.

[0137] S211, the terminal device determines a first resource.

[0138] The first signal is used to carry downlink control information DCI; it is also used to generate an echo signal, and the echo signal is used for target perception. The first signal can also be called a communication perception control signal, or a synaesthesia control signal, etc., which is not limited in this application. It should be noted that the echo signal of the first signal can be understood as a signal after the first signal encounters a moving or stationary object / gas in the physical environment during propagation and is reflected or refracted.

[0139] The first signal may be generated by encoding, modulating, and processing the DCI, and the first signal may include N signal elements, and the signals corresponding to the N signal elements are the same. It should be understood that the signal element is a part of a control channel, and may be referred to as a control channel element (CCE) or a control element (CE), and this application does not limit this.

[0140] The first resource is a resource for sending a first signal, so the first resource can also be called a communication perception control resource, or a communication perception control channel, or a communication control channel, etc., and this application does not limit this.

[0141] The first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, where M is a positive integer and N is a positive integer greater than or equal to 2. Specifically, N can be a multiple of 4, such as 8, 12, and 16, etc.; it can also be a multiple of 8, such as 8 and 16, etc., and this application does not limit this.

[0142] The time unit may be a time slot. In the embodiments of the present application, the time slot is used as an example for illustration. In other implementations, the time unit may also be a frame, a subframe, or other time domain division unit. The present application does not limit this.

[0143] It should be noted that the network device maps the first signal to the first resource, which can be understood as a step in which the network device determines the first signal and the first resource, and step S210 can also be expressed as "the network device generates the first signal". The network device generates the first signal, including: the network device encodes the data information carried by the communication perception channel, scrambles, modulates, multi-antenna related processing (only for multiple antennas), resource mapping (that is, the network device maps the first signal to the first resource), OFDM baseband signal generation processing, etc.

[0144] In a possible implementation, before sending the first signal, the method 200 may further include: S220, the network device sends first indication information; correspondingly, the terminal device receives the first indication information.

[0145] The first indication information is used to indicate at least one of the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and the modulation coding strategy MCS corresponding to the first signal.

[0146] It should be understood that the first indication information may directly indicate the number N of signal elements, or may indicate the number N of resource groups, or may indicate the time domain positions of N resource groups and the number of time units corresponding to N time domain symbols, thereby determining the number N of signal elements.

[0147] The time domain positions of the N resource groups may be positions of time domain symbols occupied by the first resource in each time unit.

[0148] For example, Figure 6 As shown, one time slot contains 14 symbols, and the resource group included in the first resource is the first symbol of each time slot.

[0149] As another example, Figure 7 As shown, the first resource includes a resource group of the 1st and 2nd symbols of each time slot.

[0150] The number of time units corresponding to the N time domain symbols refers to the number of time units occupied by the first resource.

[0151] For example, Figure 6As shown, symbols with the same number correspond to a synaesthesia control channel, wherein there are 4 symbols numbered 1, i.e., the number of repeated symbols is 4, that is, the number of time slots corresponding to the time domain symbol is 4, and every 4 symbols belong to a synaesthesia control channel (i.e., the first resource), and the signals corresponding to the 4 signal elements sent on these 4 symbols are the same.

[0152] As another example, Figure 7 As shown, symbols numbered 1 and 2 correspond to a synaesthesia control channel, and the number of time slots corresponding to the time domain symbols is 8, that is, 16 symbols in every 8 time slots are a synaesthesia control channel (i.e., the first resource), and the signals corresponding to the 16 signal elements sent on these 16 symbols are the same.

[0153] The first indication information may indicate the number M of subcarriers included in each of the N resource groups.

[0154] The number M of subcarriers included in each resource group may be the same or different, and this application does not impose any limitation on this.

[0155] The first indication information may indicate the frequency domain positions of the M subcarriers included in each of the N resource groups, or may only indicate whether the frequency domain positions of the M subcarriers included in each of the N resource groups are the same or different.

[0156] Exemplarily, the first indication information may indicate the frequency domain positions of M subcarriers of a resource group, and then indicate that the frequency domain positions of M subcarriers of other resource groups are the same; the first indication information may also indicate the frequency domain positions of M subcarriers of each resource group, for example, by indicating through a predefined correspondence table, etc.

[0157] The network device maps the first signal to M subcarriers, and the M subcarriers may be continuous or distributed at intervals. Exemplarily, the first signal is mapped in the frequency domain at an equal interval of 1 or 2 subcarriers, or occupies multiple subcarriers continuously. By configuring the size of the number of subcarriers M, the resources occupied by sending the perception signal can be reduced, the overhead can be reduced, and the resource utilization can be improved.

[0158] The modulation and coding strategy MCS refers to the modulation mode and coding rate corresponding to each resource group on the first resource.

[0159] Exemplarily, the first indication information may indicate the MCS index corresponding to each resource group in the N resource groups. Such as the MCS index included in the MCS index table in Table 1. The modulation order and code rate corresponding to the MCS index can be obtained by looking up the table. The first indication information is not limited to the modulation mode and code rate in the table of MCS candidates such as Table 1, and may include other values, which is not limited in this application.

[0160] In a possible implementation, the first indication information may include multiple fields such as a first field. The first field indicates the time domain position of N resource groups in the first resource. Exemplarily, the first three symbols in each time slot can be used for the synaesthesia control channel. The first field may include 2 bits and a total of 4 states (00, 01, 10, 11). State 00 indicates that the synaesthesia control channel has 1 symbol in a time slot, including the first symbol in a time slot. State 01 indicates that the synaesthesia control channel has 2 symbols in a time slot, including the first symbol and the second symbol in a time slot. State 10 indicates that the synaesthesia control channel has 3 symbols in a time slot, including the first to third symbols in a time slot. State 11 is a reserved state and is not used for indication, as shown in Table 2 below.

[0161] For example, Figure 6 As shown, the first field can be 00 at this time.

[0162] As another example, Figure 7 As shown, the first field can be 01 at this time.

[0163] Table 2: Indication status of the first field

[0164] First Field Status meaning 00 The first resource has 1 symbol in a time slot 01 The first resource has 2 symbols in one time slot 10 The first resource has 3 symbols in one time slot 11 Reserve

[0165] In another possible implementation, the first indication information includes multiple fields such as a second field. The second field indicates the number of time units occupied by the first resource. Exemplarily, the second field may include 2 bits with a total of 4 states (00, 01, 10, 11), where state 00 indicates that the first resource is distributed in 2 different time slots; state 01 indicates that the first resource is distributed in 4 different time slots; state 10 indicates that the first resource is distributed in 8 different time slots; and state 11 indicates that the first resource is distributed in 16 different time slots, as shown in Table 3 below.

[0166] For example, Figure 6 As shown, the second field can be 01 at this time.

[0167] As another example, Figure 7 As shown, the second field can be 10 at this time.

[0168] Table 3: Indication status of the second field

[0169] First Field Status meaning 00 The first signal is distributed in 2 different time slots 01 The first signal is distributed in 4 different time slots 10 The first signal is distributed in 8 different time slots 11 The first signal is distributed in 16 different time slots

[0170] Also exemplarily, the second field may contain 3 bits for a total of 8 states (000, 001, 010, 011, 100, 101, 110, 111), where state 000 indicates that the first resource is distributed in 1 different time slot, state 001 indicates that the first resource is distributed in 2 different time slots, state 010 indicates that the first resource is distributed in 4 different time slots, state 011 indicates that the first resource is distributed in 8 different time slots, state 100 indicates that the first resource is distributed in 12 different time slots, state 101 indicates that the first resource is distributed in 16 different time slots, state 110 indicates that the first resource is distributed in 32 different time slots, and state 111 indicates that the first resource is distributed in 64 different time slots, as shown in Table 4 below.

[0171] Table 4: Indication status of the second field

[0172] First Field Status meaning 000 The first signal is distributed in 1 different time slot 001 The first signal is distributed in 2 different time slots 010 The first signal is distributed in 4 different time slots 011 The first signal is distributed in 8 different time slots 100 The first signal is distributed in 12 different time slots 101 The first signal is distributed in 16 different time slots 110 The first signal is distributed in 32 different time slots 111 The first signal is distributed in 64 different time slots

[0173] In another possible implementation, the first indication information includes multiple fields such as a third field. The third field is used to indicate the MCS index corresponding to the first signal. Exemplarily, the modulation mode and coding rate of the first signal can be directly indicated by the third field. Again exemplarily, the third field can indicate the MCS index value corresponding to each symbol, such as the MCS Index value in Table 1, or the MCS Index value in other tables. The modulation mode and coding rate corresponding to the MCS index value can be obtained by looking up the table.

[0174] In a possible implementation, the first indication information may indicate the number of signal elements N included in the first signal and the resource configuration of N resource groups by indicating one of multiple sets of predefined or preconfigured configuration combinations. Exemplarily, multiple sets of configurations may be pre-set, configuration 1 indicating that the synaesthesia control channel has 1 symbol in one time slot and the first signal is distributed in 2 different time slots; configuration 2 indicating that the synaesthesia control channel has 1 symbol in one time slot and the first signal is distributed in 4 different time slots; configuration 3 indicating that the synaesthesia control channel has 1 symbol in one time slot and the first signal is distributed in 8 different time slots; configuration 4 indicating that the synaesthesia control channel has 2 symbols in one time slot and the first signal is distributed in 2 different time slots; configuration 5 indicating that the synaesthesia control channel has 2 symbols in one time slot and the first signal is distributed in 4 different time slots; configuration 6 indicating that the synaesthesia control channel has 2 symbols in one time slot and the first signal is distributed in 8 different time slots...; and so on. The first indication information may directly indicate which specific set of configurations is adopted. Regarding the setting method of multiple configurations, the above method is only a possible implementation example and this application does not limit this.

[0175] The first indication information may be carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and downlink control information DCI.

[0176] It can be understood that in each embodiment of the present application, the indication information can be carried in physical layer signaling such as downlink control information DCI, which can achieve more dynamic and flexible indication, or can be carried in high-level signaling, which can be a more reliable indication and is suitable for scenarios where the indication content changes relatively slowly.

[0177] In a possible implementation, the method 200 may further include: S221, the network device sends second indication information, and correspondingly, the terminal device receives the second indication information. S222, sending a second signal.

[0178] The second indication information is used to indicate configuration information of a second signal, and the second signal is used to carry downlink control information.

[0179] The second indication information and the first indication information can be carried in the same signaling, wherein the configuration information includes at least one of the number of time domain symbols occupied by the second signal in a time unit, the symbol index of the time domain symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal.

[0180] The time domain symbol occupied by the second signal belongs to one time unit.

[0181] The second signal is only used for communication and not for sensing. The second signal can be called a communication control channel, or directly called a control channel.

[0182] That is, the network device will send two indication messages, indicating the configuration information of the synaesthesia control channel and the pure communication control channel respectively.

[0183] S230, the network device sends a first signal on the first resource; correspondingly, the terminal device receives the first signal on the first resource.

[0184] The network device sends a first signal to the terminal device on a first resource. Optionally, the network device sends the first signal on mapping resources corresponding to multiple antenna ports. Correspondingly, the terminal device receives the first signal sent by the network device on the first resource. Optionally, the terminal device receives the first signal sent by the network device on mapping resources corresponding to multiple antenna ports.

[0185] Although S220 and S230 are described according to one terminal device, the network device may send the first signal or the first indication information to one or more terminal devices, and this application does not impose any limitation on this.

[0186] The first signal will be reflected after encountering the sensing target to generate an echo signal. The sensing device can receive the echo signal of the first signal for sensing.

[0187] The echo signal refers to the electromagnetic feedback signal generated by the transmission, scattering and reflection of electromagnetic waves through the sensed target.

[0188] The device receiving the echo signal may be the network device that sends the first signal, or may be other network devices.

[0189] Method 1: S240, the network device receives the echo signal of the first signal for perception.

[0190] Method 2: S241, network device 2 receives the echo signal of the first signal for perception.

[0191] What is received may be all or part of the echo signal, and the network device or the network device 2 may perform target perception based on the received echo signal.

[0192] The network device can obtain the perception result of the perceived target based on the perception signal and the echo signal of the perception signal. The perception result may include, for example, the distance, angle, position, moving speed, or size of the perceived target from the network device. In this way, the network device can further use the perception result to assist communication and improve the quality of communication. It should be noted that the perception function and the communication function can be implemented by the same network device or by multiple network devices working together, which is not limited in the embodiments of the present application.

[0193] S250: The terminal device senses according to the first signal.

[0194] The first signal carries DCI, and the DCI may indicate resources of the PDSCH. Therefore, optionally, the terminal device may receive the PDSCH according to the resources indicated by the DCI in the first signal.

[0195] For the terminal device, after the first signal is sent by the network device, it is affected by the sensing target, which may be transmitted, scattered, and reflected by the sensing target. The content of the signal does not change, but the terminal device can perceive it through the first signal.

[0196] That is, the first signal can complete the communication function while completing the perception.

[0197] According to the embodiments provided in the present application, the perception performance in a networking scenario can be improved.

[0198] It should be understood that in various embodiments of the present application, the size of the sequence number of each process mentioned above does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. For example, S221, the network device sends the second indication information, which can be executed at the same time as S220, sending the first indication information, that is, the first indication information and the second indication information are included in the same signaling, or they can be executed at different times, and the present application does not limit this. For another example, for S222, the network device sends the second signal, and S230, sends the first signal, the second signal can be sent first and then the first signal, or the first signal can be sent first and then the second signal, and the present application does not limit this. Any sequential arrangement that can realize the function of each step should be within the scope of protection of the present application.

[0199] In the embodiment of the present application, on the one hand, a control channel is modulated into at least two identical signal elements, and at least two symbols mapped in at least two time units are sent, which can reduce the interference between network devices in the networking scenario and improve the ability of network devices to perceive using the control channel, and on the other hand, improve the ability of terminal devices to perceive using the control channel. In summary, through this solution, the working efficiency and performance of the perception and communication integration system can be improved.

[0200] According to the above method, Figure 8 A schematic diagram of a wireless communication apparatus 300 provided in accordance with an embodiment of the present application.

[0201] like Figure 8 As shown, the communication device 300 may include an interface unit 310 and a processing unit 320 .

[0202] In one possible design, the communication device 300 may correspond to the network device (or base station or gNB) in the above method embodiment.

[0203] Exemplarily, the communication device 300 may correspond to the network device in the method 200 according to an embodiment of the present application, and the processing unit 320 in the communication device 300 is used to determine a first signal and a first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2;

[0204] The interface unit 310 in the communication device 300 is used to send a first signal on a first resource, and the N signal elements correspond to the N resource groups one by one.

[0205] In a possible implementation manner, the interface unit 310 in the device 300 is further configured to receive an echo signal of the first signal; and the processing unit 320 is further configured to: perform perception according to the echo signal.

[0206] In a possible implementation, the interface unit 310 is also used to: send a first indication information, where the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0207] Optionally, the first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

[0208] In a possible implementation, the interface unit 310 is also used to: send second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, and where the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; send a second signal, where the symbols occupied by the second signal belong to a time unit.

[0209] The interface unit 310 in the communication device 300 performs the receiving and sending operations performed by the network device in the above method embodiment, and the processing unit 320 performs operations other than the receiving and sending operations.

[0210] Exemplarily, the communication device 300 may correspond to the network device 2 in the method 200 according to an embodiment of the present application, and the interface unit 310 in the communication device 300 is used to receive an echo signal of a first signal on a first resource, where the first signal is used to carry downlink control information, and the first signal includes N signal elements, and the signals corresponding to the N signal elements are the same. The first resource includes N resource groups, and any resource group of the N resource groups includes M subcarriers on a time domain symbol, and the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2, and the N signal elements correspond one-to-one to the N resource groups; the processing unit 320 is used to perceive according to the echo signal.

[0211] In another possible design, the communication device 300 may also correspond to the terminal device in the above method embodiment.

[0212] Exemplarily, the communication device 300 may correspond to the terminal device in the method 200 according to an embodiment of the present application, and the processing unit 320 in the communication device 300 is used to determine a first resource, which includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, wherein M is a positive integer and N is a positive integer greater than or equal to 2; the interface unit 310 is used to receive a first signal on the first resource, the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

[0213] In a possible implementation, the processing unit 320 is further configured to perform perception according to the first signal.

[0214] In a possible implementation, the interface unit 310 is also used to: receive first indication information, wherein the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation coding strategy MCS corresponding to the first signal.

[0215] Optionally, the first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

[0216] In a possible implementation, the interface unit 310 is also used to: send second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, and where the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; send a second signal, where the symbols occupied by the second signal belong to a time unit.

[0217] The interface unit 310 in the communication device 300 performs the receiving and sending operations performed by the terminal device in the above-mentioned method embodiments, and the processing unit 320 performs operations other than the receiving and sending operations.

[0218] According to the above method, Fig. 9 Schematic diagram of a communication device 400 provided in an embodiment of the present application. Fig. 9As shown, the apparatus 400 may be a terminal device or a network device.

[0219] The apparatus 400 may include a processor 410 (ie, an example of a processing unit) and a memory 420. The memory 420 is used to store instructions, and the processor 410 is used to execute the instructions stored in the memory 420, so that the apparatus 400 implements the steps performed by the terminal device or the network device in the method 200.

[0220] Furthermore, the device 400 may also include an interface 430 (i.e., an example of an interface unit module). Furthermore, the processor 410, the memory 420, and the interface 430 may communicate with each other through an internal connection path to transmit control and / or data signals. The memory 420 is used to store a computer program, and the processor 410 may be used to call and run the computer program from the memory 420 to control the interface 430 to receive a signal or send a signal to complete the steps of the terminal device or network device in the above method. The memory 420 may be integrated in the processor 410, or may be set separately from the processor 410.

[0221] In a possible implementation, if the communication device 400 is a communication equipment, the interface 430 is a receiver or a transmitter. The receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they may be collectively referred to as a transceiver.

[0222] In a possible implementation, if the communication device 400 is a chip or a circuit, the interface 430 is an input interface or the interface 430 is an output interface.

[0223] As an implementation, the function of the interface 430 may be implemented by a transceiver circuit or a dedicated transceiver chip. The processor 410 may be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.

[0224] As another implementation, it is possible to use a general-purpose computer to implement the communication device provided in the embodiment of the present application. That is, the program code implementing the functions of the processor 410 and the interface 430 is stored in the memory 420, and the general-purpose processor implements the functions of the processor 410 and the interface 430 by executing the code in the memory 420.

[0225] For the concepts, explanations, detailed descriptions and other steps involved in the device 400 and related to the technical solution provided in the embodiment of the present application, please refer to the description of these contents in the aforementioned method or other embodiments, which will not be repeated here.

[0226] Fig.10 This is a schematic diagram of the structure of a terminal device 50 provided in this application. For ease of explanation, Fig.10 Only the main components of the communication device are shown. Fig.10 As shown, the terminal device 50 includes a processor, a memory, a control circuit, an antenna, and an input and output device.

[0227] The processor is mainly used to process the communication protocol and communication data, as well as to control the entire terminal device, execute the software program, and process the data of the software program, for example, to support the terminal device to perform the actions described in the above-mentioned transmission precoding matrix indication method embodiment. The memory is mainly used to store software programs and data, for example, to store the codebook described in the above-mentioned embodiment. The control circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The control circuit and the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc. are mainly used to receive data input by users and output data to users.

[0228] When the communication device is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0229] Those skilled in the art will appreciate that for ease of description, Fig.10 Only one memory and processor are shown. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0230] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device, execute software programs, and process software program data. Fig.10The processor in the integrated baseband processor and the central processor functions, those skilled in the art will appreciate that the baseband processor and the central processor may also be independent processors, interconnected by bus and other technologies. Those skilled in the art will appreciate that the terminal device may include multiple baseband processors to adapt to different network formats, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The central processor may also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built into the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0231] like Fig.10 As shown, the terminal device 50 includes an interface unit 51 and a processing unit 52. The interface unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the interface unit 51 may be regarded as a receiving unit, and the device used to implement the sending function in the interface unit 51 may be regarded as a sending unit, that is, the interface unit 51 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0232] Fig.10 The terminal device shown can execute each action performed by the terminal device in method 200. Here, in order to avoid redundancy, its detailed description is omitted.

[0233] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method executed by a network device or a terminal device in the above method embodiment are stored.

[0234] For example, when the computer program is executed by a computer, the computer can implement the method performed by the network device or the terminal device in the above method embodiment.

[0235] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method executed by a terminal device or a method executed by a network device in the above method embodiment.

[0236] An embodiment of the present application also provides a communication system, which includes the network device and terminal device in the above embodiment.

[0237] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0238] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0239] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or 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. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0240] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0241] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0242] It will be appreciated by those skilled in the art that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. It will be clearly understood by those skilled in the art that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. In several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, which may be electrical, mechanical or other forms.

[0243] The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, the functional units in each embodiment of the present application may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit. If the function is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including several instructions for a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a disk or an optical disk.

[0244] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A signal sending method, characterized in that: include: Determine a first signal and a first resource, where the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, where M is a positive integer and N is a positive integer greater than or equal to 2; The first signal is sent on the first resource, and the N signal elements correspond one-to-one to the N resource groups.

2. The method according to claim 1, characterized in that The method further comprises: receiving an echo signal of the first signal; Sensing is performed according to the echo signal.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: Send first indication information, where the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation and coding strategy MCS corresponding to the first signal.

4. The method according to claim 3, characterized in that The first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: Sending second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, and the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of time domain symbols occupied by the second signal in a time unit, the symbol index of the time domain symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; The second signal is sent, wherein a time domain symbol occupied by the second signal belongs to one time unit.

6. A signal receiving method, characterized in that: include: Determine a first resource, the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, where M is a positive integer, and N is a positive integer greater than or equal to 2; A first signal is received on the first resource, where the first signal is used to carry downlink control information, and the first signal includes N signal elements, signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

7. The method according to claim 6, characterized in that The method further comprises: Sensing is performed according to the first signal.

8. The method according to claim 6 or 7, characterized in that: The method further comprises: Receive first indication information, where the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation and coding strategy MCS corresponding to the first signal.

9. The method according to claim 8, characterized in that The first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

10. The method according to any one of claims 6 to 9, characterized in that The method further comprises: receiving second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, where the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; The second signal is received, wherein symbols occupied by the second signal belong to one time unit.

11. A signal receiving method, characterized in that: include: Receiving an echo signal of a first signal on a first resource, where the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, the N time domain symbols correspond to at least two time units, wherein M is a positive integer, N is a positive integer greater than or equal to 2, and the N signal elements correspond one-to-one to the N resource groups; Sensing is performed according to the echo signal.

12. A signal sending device, characterized in that: include: a processing unit, configured to determine a first signal and a first resource, wherein the first signal is used to carry downlink control information, the first signal includes N signal elements, the signals corresponding to the N signal elements are the same, the first resource includes N resource groups, any resource group of the N resource groups includes M subcarriers on a time domain symbol, the N resource groups correspond to N time domain symbols, and the N time domain symbols correspond to at least two time units, wherein M is a positive integer and N is a positive integer greater than or equal to 2; An interface unit is used to send the first signal on the first resource, and the N signal elements correspond one-to-one to the N resource groups.

13. The device according to claim 12, characterized in that The interface unit is also used to: receive an echo signal of the first signal; The processing unit is further used for: performing perception according to the echo signal.

14. The device according to claim 12 or 13, characterized in that The interface unit is also used for: Send first indication information, where the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation and coding strategy MCS corresponding to the first signal.

15. The device according to claim 14, characterized in that The first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

16. The device according to any one of claims 12 to 15, characterized in that The interface unit is also used for: Sending second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, and the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; The second signal is sent, wherein symbols occupied by the second signal belong to one time unit.

17. A signal receiving device, characterized in that: include: a processing unit, configured to determine a first resource, the first resource comprising N resource groups, any one of the N resource groups comprising M subcarriers on a time domain symbol, the N resource groups corresponding to N time domain symbols, the N time domain symbols corresponding to at least two time units, wherein M is a positive integer, and N is a positive integer greater than or equal to 2; An interface unit is used to receive a first signal on a first resource, where the first signal is used to carry downlink control information, and the first signal includes N signal elements, where the signals corresponding to the N signal elements are the same, and the N signal elements correspond one-to-one to the N resource groups.

18. The device according to claim 17, characterized in that The processing unit is further configured to perform sensing according to the first signal.

19. The device according to claim 17 or 18, characterized in that The interface unit is also used to receive first indication information, wherein the first indication information is used to indicate the number N of signal elements included in the first signal, the number M of subcarriers included in each of the N resource groups, the frequency domain positions of the M subcarriers included in each of the N resource groups, and at least one of the modulation and coding strategy MCS corresponding to the first signal.

20. The device according to claim 19, characterized in that The first indication information is carried in any one of a physical broadcast channel PBCH, a system information block SIB, a radio resource management RRC signaling, a media access control MAC signaling, and a downlink control information DCI.

21. The device according to claim 19 or 20, characterized in that The interface unit is also used for: receiving second indication information, where the second indication information is used to indicate configuration information of a second signal, where the second signal is used to carry downlink control information, where the second indication information and the first indication information are carried in the same signaling, wherein the configuration information includes at least one of the number of symbols occupied by the second signal in a time unit, the symbol index of the symbol occupied by the second signal in a time unit, the number of subcarriers occupied by the second signal, and the subcarrier index occupied by the second signal; The second signal is received, wherein symbols occupied by the second signal belong to one time unit.

22. A signal receiving device, characterized in that: include: An interface unit, configured to receive an echo signal of a first signal on a first resource, where the first signal is used to carry downlink control information, where the first signal includes N signal elements, where the signals corresponding to the N signal elements are the same, where the first resource includes N resource groups, where any resource group of the N resource groups includes M subcarriers on a time domain symbol, where the N resource groups correspond to N time domain symbols, where the N time domain symbols correspond to at least two time units, where M is a positive integer, N is a positive integer greater than or equal to 2, and where the N signal elements correspond one-to-one to the N resource groups; The processing unit performs sensing according to the echo signal.

23. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a program or an instruction so that the device executes the method according to any one of claims 1 to 5.

24. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a program or an instruction so that the apparatus executes the method according to any one of claims 6 to 10.

25. A communication device, characterized in that: include: A processor, wherein the processor is configured to execute a program or an instruction so that the apparatus executes the method according to claim 11.

26. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10, or the method according to claim 11.

27. A computer program product, characterized in that The method comprises a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10, or the method according to claim 11 is implemented.

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