Signal sending method and apparatus, and signal receiving method and apparatus

Abstract

A signal sending method and apparatus, and a signal receiving method and apparatus. The signal sending method comprises: 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, signals corresponding to the N signal elements being the same, the first resource comprising N resource groups, any one of the N resource groups comprising M subcarriers on one time domain symbol, the N resource groups corresponding to N time domain symbols, and 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; and sending the first signal on the first resource, the N signal elements having one-to-one correspondence to the N resource groups. The method can improve the sensing performance in device networking scenarios.

Description

Signal sending and receiving method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on July 21, 2023, with application number 202310901567.5 and invention name “Signal Transmitting and Receiving Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and more particularly, to a method and apparatus for sending and receiving signals. Background Art

[0003] As fifth-generation mobile communication systems (5G) evolve toward 5G-Advanced (5G-A), integrated communication and perception technology is considered a key enabler for expanding the service capabilities of mobile communication networks. The core concept of this technology is to add perception capabilities to mobile communication networks, building upon the ability to detect, track, and image targets. This allows communication and perception capabilities to coexist harmoniously and even benefit from each other within a single network. Improving perception performance in these networking scenarios is a pressing issue.

[0004] Summary of the Invention

[0005] 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 them into 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.

[0006] In the first aspect, a signal sending method is provided. The method 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 functions.

[0007] The method includes: 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; sending the first signal on the first resource, the N signal elements corresponding one-to-one to the N resource groups.

[0008] 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 the 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.

[0009] 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 perception performance in the networking scenario can be improved.

[0010] 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 based on the echo signal.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: sending 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.

[0012] 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.

[0013] 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.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: sending second indication information, where the second indication information is used to indicate configuration information of the second signal, 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 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.

[0015] The second signal is only used for communication and 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.

[0016] 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.

[0017] The method includes: determining a first resource, 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; receiving a first signal on the 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, and the N signal elements corresponding one-to-one to the N resource groups.

[0018] 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 perception performance in the networking scenario can be improved.

[0019] In combination with the second aspect, in some implementations of the second aspect, the method further includes: performing perception based on the first signal.

[0020] It should be understood that the first signal may be a first signal that has been refracted and / or reflected by the sensing target.

[0021] 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 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 and coding strategy MCS corresponding to the first signal.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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 network device functions.

[0026] The method includes: receiving an echo signal of a first signal on 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, 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 performing perception according to the echo signal.

[0027] In the fourth aspect, a signal sending method is provided. The method 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 functions.

[0028] The method includes: determining a first signal and a first resource, the first signal including N signal elements, the signals corresponding to the N signal elements are the same, the first resource including N resource groups, any resource group 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; sending the first signal on the first resource, the N signal elements corresponding one-to-one to the N resource groups.

[0029] In combination with the fourth aspect, in some implementations of the fourth aspect, the first signal is used to carry downlink control information.

[0030] 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 perception based on the echo signal.

[0031] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method also includes: sending 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.

[0032] 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.

[0033] 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.

[0034] 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 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 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.

[0035] 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 terminal device functions.

[0036] The method includes: determining a first resource, 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; receiving a first signal on the first resource, the first signal including N signal elements, the signals corresponding to the N signal elements being the same, and the N signal elements corresponding one-to-one to the N resource groups.

[0037] In combination with the fifth aspect, in certain implementations of the fifth aspect, the first signal is used to carry downlink control information.

[0038] In combination with the fifth aspect, in some implementations of the fifth aspect, the method further includes: performing perception based on the first signal.

[0039] 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 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 and coding strategy MCS corresponding to the first signal.

[0040] 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.

[0041] 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.

[0042] In combination with the fifth aspect, in certain implementations of the fifth aspect, the method further 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.

[0043] 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 network device functions.

[0044] 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 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.

[0045] In combination with the sixth aspect, in some implementations of the sixth aspect, the first signal is used to carry downlink control information.

[0046] In the seventh aspect, a signal sending device is provided, which includes: 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.

[0047] In combination with the seventh aspect, in some 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.

[0048] In combination with the seventh aspect, in certain implementations of the seventh aspect, the interface unit is further used to: 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.

[0049] 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.

[0050] In combination with the seventh aspect, in certain implementations of the seventh aspect, the interface unit is further used to: send second indication information, where the second indication information is used to indicate configuration information of the second signal, 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 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 indexes occupied by the second signal; send the second signal, where the symbols occupied by the second signal belong to a time unit.

[0051] 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, 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, 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.

[0052] In combination with the eighth aspect, in some implementations of the eighth aspect, the processing unit is further used to: perform perception based on the first signal.

[0053] In combination with the eighth aspect, in certain implementations of the eighth aspect, the interface unit is further used to: receive first indication information, the first indication information being 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 and coding strategy MCS corresponding to the first signal.

[0054] 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.

[0055] 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 the 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.

[0056] In the ninth aspect, a signal receiving device is provided, which includes: an interface unit for receiving an echo signal of a first signal on 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, 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 for sensing based on the echo signal.

[0057] In the tenth aspect, a signal sending and receiving device is provided, which can 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 the network device. The device has the function of implementing the above-mentioned first aspect or third aspect or fourth aspect or sixth aspect and the corresponding possible implementation methods. The function can be implemented by hardware or by executing the corresponding software implementation by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0058] 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 the program, 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 the corresponding possible implementation methods. In this design, the device may be a network device.

[0059] In another possible design, when the device is a chip, the chip includes: an interface unit and a processing unit, and the interface unit can be, for example, an input / output interface, a pin or a circuit on the chip. The processing unit can be, for example, a processor. The processing unit can 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 can execute instructions in a storage unit, and the storage unit can be a storage module in the chip, such as a register, a cache, etc. The storage unit can 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.

[0060] 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.

[0061] In the eleventh aspect, a signal receiving device is provided, which can be a terminal device, or a component of a terminal 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 network device functions. The device has the function of implementing the above-mentioned second aspect or fifth aspect and the corresponding various possible implementation methods. The function can be implemented by hardware or by hardware executing the corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0062] 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 the 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.

[0063] In another possible design, when the device is a chip, the chip includes: an interface unit and a processing unit, and the interface unit can be, for example, an input / output interface, a pin or a circuit on the chip. The processing unit can be, for example, a processor. The processing unit can 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 can execute instructions in a storage unit, and the storage unit can be a storage module in the chip, such as a register, a cache, etc. The storage unit can 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.

[0064] 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.

[0065] In a twelfth aspect, a communication system is provided, comprising the communication device provided in the seventh aspect or the ninth aspect and the communication apparatus 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.

[0066] In the thirteenth aspect, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is run on a computer, the computer is caused to execute instructions of the method of any possible implementation of the above-mentioned first to sixth aspects or the first to sixth aspects.

[0067] In the fourteenth aspect, a chip is provided, comprising: a processing unit, which can execute instructions to enable the method of any possible implementation of the above-mentioned first to sixth aspects or the first to sixth aspects to be executed.

[0068] In a fifteenth aspect, a computer program product is provided, which includes a computer program code, which, when the computer program code is run, is used to execute instructions of the method of any possible implementation of the above-mentioned first to sixth aspects or the first to sixth aspects.

[0069] In the sixteenth aspect, a chip system is provided, comprising 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 their possible implementation methods are executed.

[0070] 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.

[0071] Specifically, the beneficial effects of other aspects can refer to the beneficial effects described in the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] FIG1 is a schematic diagram of a possible system applicable to an embodiment of the present application;

[0073] Figure 2 is a schematic diagram of a possible perception mode;

[0074] FIG3 is a schematic diagram of a possible control channel symbol distribution;

[0075] Figure 4 is a schematic diagram of sensing signal interference in a networking scenario;

[0076] FIG5 is a flow chart of a signal sending and receiving method provided in an embodiment of the present application;

[0077] FIG6 is a schematic diagram of a possible resource distribution provided by an embodiment of the present application;

[0078] FIG7 is a schematic diagram of another possible resource distribution provided by an embodiment of the present application;

[0079] 8-10 are schematic block diagrams of several communication devices provided in this application. DETAILED DESCRIPTION

[0080] The technical solution in this application will be described below with reference to the accompanying drawings.

[0081] The technical solutions of the embodiments 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) system, universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR) and other evolved communication systems, vehicle-to-XV2X, where V2X can include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2I), and vehicle to 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.

[0082] 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, an in-vehicle 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.

[0083] 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 equipment, 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 (BBU) and a remote radio unit (RRU) in a distributed base station scenario, a baseband pool BBU pool and a radio frequency unit RRU in a CRAN scenario, and a gNB in ​​a wireless communication system.

[0084] In the embodiment of the present application, the network device can be any device with wireless transceiver function. The device includes but is not limited to: an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., a home evolved NodeB, or a home Node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It can also be a gNB in ​​a 5G, such as NR, system, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple 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.

[0085] In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU). The CU implements some gNB functions, while the DU implements some gNB functions. 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), medium access control (MAC), and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing, and active antenna-related functions. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling, can also be considered to be sent by the DU, or by both the DU and the AAU. It is understood that a network device can be a device that includes one or more of a CU node, a DU node, or an AAU node. In addition, the CU may be classified as a network device in an access network (radio access network, RAN), or may be classified as a network device in a core network (core network, CN), which is not limited in this application.

[0086] Network equipment provides services for cells, and terminal devices communicate with cells through transmission resources allocated by the network equipment (for example, frequency domain resources, or spectrum resources). The cell can belong to a macro base station (for example, a macro eNB or macro gNB), or to a base station corresponding to a small cell. Small cells here can include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0087] FIG1 is a schematic diagram of a possible, non-limiting system suitable for embodiments of the present application.

[0088] As shown in Figure 1 , the communications system includes a radio access network (RAN) 100. RAN 100 includes at least one RAN node (e.g., 110a and 110b in Figure 1 , collectively referred to as 110) and at least one terminal device (e.g., 120a-120j in Figure 1 , collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1 ). Terminal 120 is wirelessly connected to RAN node 110. RAN node 110 is wirelessly or wiredly connected to core network 200. The core network devices in core network 200 and RAN node 110 in RAN 100 may be separate physical devices, or they may be the same physical device that integrates core network logical functions and radio access network logical functions.

[0089] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G or 5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0090] RAN node 110, sometimes also referred to as access network equipment, network equipment, RAN entity, or access node, constitutes part of a communication system and facilitates wireless access for terminals. Multiple RAN nodes 110 in a communication system can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal 120j accessing RAN 100 via network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functionality, and network elements 120a-120j can be understood as communication devices with terminal functionality.

[0091] 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 (such as 110a in FIG1 ), a micro base station or an indoor station (such as 110b in FIG1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, a RAN node may also be a server, a wearable device, a vehicle or an onboard device. For example, an access network device in vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node in this application may also be a logical node, a logical module or software that can implement all or part of the RAN node functions.

[0092] 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 they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0093] 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, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0094] The RAN node can also be expressed in different ways. Unless otherwise specified in this application, the network device is used to express it.

[0095] It should be understood that Figure 1 is merely a schematic diagram and may include other devices not shown. In addition, the embodiments of the present application do not limit the number of terminal devices and network devices included in the communication system.

[0096] 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 memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, 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 browsers, address books, word processing software, and 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 is possible to communicate according to the method provided by the embodiment of the present application by running a program that records the 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 can 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.

[0097] In addition, various aspects or features of the present application can be implemented as methods, apparatuses, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as 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 magnetic 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.

[0098] In this application, "sending information to...(terminal)" can be understood as the destination of the information being the terminal. This 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 undergo necessary processing 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.

[0099] To facilitate understanding of the embodiments of the present application, first, a brief introduction to the concepts and technologies involved in the embodiments of the application is given.

[0100] It should be understood that the relevant terms and explanations in the following text are common to all embodiments throughout the text. Different embodiments can be used independently or in combination based on certain internal or external connections. Different implementation methods in the embodiments can be used independently or in combination.

[0101] 1. Subcarrier

[0102] In an OFDM system, frequency domain resources are divided into several sub-resources. Each sub-resource in the frequency domain is called a subcarrier. A subcarrier can also be understood as the minimum granularity of frequency domain resources.

[0103] 2. Subcarrier spacing

[0104] In an OFDM system, the spacing between the center or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in an LTE system is 15kHz, while the subcarrier spacing in a 5G NR system can be 15kHz, 30kHz, 60kHz, or 120kHz.

[0105] 3. Resource Block

[0106] N consecutive subcarriers in the frequency domain are called a resource block. For example, a resource block in the LTE system includes 12 subcarriers, and a resource block in the 5G NR system also includes 12 subcarriers. As communication systems evolve, the number of subcarriers in a resource block can also be different.

[0107] 4. Time slots

[0108] In the 5G NR system, a time slot consists of 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.

[0109] 5. Subframe

[0110] The duration of a subframe in the 5G NR system is 1ms.

[0111] 6. OFDM Symbols

[0112] An OFDM symbol is the smallest time unit in the time domain in an OFDM system.

[0113] 7. Time-frequency resource unit

[0114] The smallest resource granularity in the OFDM system is an OFDM symbol in the time domain and a subcarrier in the frequency domain.

[0115] 8. Dedicated demodulation reference signal (DMRS)

[0116] DMRS is used to estimate the equivalent channel matrix of the data channel or control channel, thereby recovering the received signal. DMRS is a signal known to the receiving end. Based on the received signal and the known DMRS signal, the receiving end can determine the fading characteristics of the wireless channel, i.e., the channel coefficient of the wireless channel, 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).

[0117] 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.

[0118] To reduce mutual interference between DMRS resources corresponding to multiple DMRS ports, resource mapping can be performed through frequency division multiplexing, time division multiplexing, or code division multiplexing. Release 15 supports two DMRS resource mapping types (type 1 and type 2). For Type 1 DMRS, a maximum of eight orthogonal DMRS ports are supported; for Type 2 DMRS, a maximum of 12 orthogonal DMRS ports are supported.

[0119] 9. Perception

[0120] The technical principles of perception differ somewhat from those of communication. In communication, a transmitter modulates information onto radio waves and transmits them to a receiver, which then demodulates the signal carried on the radio waves to retrieve the information. Perception, on the other hand, requires the transmitter to send radio waves in a specific direction. When these waves strike a target surface, they reflect back, which the receiver then processes to obtain information such as the target's location, speed, and type.

[0121] A perception signal refers to a signal used to perceive or detect a target. Alternatively, a perception signal refers to a signal used to perceive or detect environmental information. For example, a perception signal is an electromagnetic wave transmitted 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., and is not limited in the present embodiment.

[0122] As shown in Figure 2, sensing can generally be divided into two modes: single-station sensing and dual-station sensing. In single-station sensing, the transmitter and receiver of the sensing signal are the same device. In terms of the sensing signal process, the sensing station both transmits the sensing signal and receives the signal reflected from the target surface. Therefore, the single-station sensing mode is also called the self-transmitting, self-receiving mode. In dual-station sensing, the transmitter and receiver of the sensing signal are different devices. In terms of the sensing signal process, after sensing station A transmits the sensing signal, the signal reflected from the target surface is received by sensing station B. Therefore, the dual-station sensing mode is also called the A-transmitting, B-receiving mode.

[0123] The sensing site can be a network device or a terminal device.

[0124] Sensed targets can include various tangible objects on the ground that can be sensed, such as mountains, forests, or buildings. They can also include movable objects such as vehicles, drones, pedestrians, and terminal devices. A sensed target is a target that can be sensed by a network device with sensing capabilities and can feed electromagnetic waves back to the network device. Sensed targets may also be referred to as detected targets, sensed objects, detected objects, or sensed devices, and are not limited in this embodiment.

[0125] 10. Modulation and coding scheme (MCS)

[0126] Modulation methods include quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM), with QAM including 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 transmit downlink signals to the terminal to achieve higher communication rates. For terminals with poor channel quality, network equipment uses relatively low-order modulation methods, such as QPSK or 16QAM, to ensure communication reliability. In addition to the modulation method, MCS also includes the 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 or 2 / 3. A lower coding rate means more redundant bits are added, resulting in higher communication reliability but lower 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.

[0127] Table 1 provides a possible definition of an MCS table. The MCS table may include an MCS index, a modulation order, and a target code rate. Once an MCS index is obtained, the modulation order and target code rate corresponding to the MCS index can be determined from a table such as Table 1. It should be understood that Table 1 is only one example of an MCS table, and the present embodiment does not limit the MCS table.

[0128] Table 1. MCS index correspondence table

[0129] 11. Control Channel

[0130] In a wireless communication system, communications can be divided into different types according to the types of sending nodes and receiving nodes. Generally, sending information from a network device to a terminal device is called downlink communication, and sending 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, communications can be mainly divided into frequency division duplex FDD mode and time division duplex TDD mode according to the different duplex modes. 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 orthogonal frequency division multiplexing access (OFDMA). 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 (REs). The signals sent by the transmitter are all carried on the REs and transmitted to the receiver. Since different REs are orthogonal to each other, the receiver can receive the signal sent on each RE separately.

[0131] 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. 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, thereby receiving the PDCCH and obtaining the DCI therein.

[0132] 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 one possible implementation, as shown in FIG3 , the control channel occupies the first 2 symbols of each downlink time slot.

[0133] When using control channels for sensing, as shown in Figure 4, in a scenario where multiple network devices are connected, when network device 1 receives the echo signal of the control channel for sensing, the control channel sent by network device 2 will cause significant interference to network device 1's perception. Similarly, the control channel sent by network device 1 will also cause significant interference to network device 2's perception, which will significantly reduce the perception performance of both network devices. Furthermore, the different control channels in different time slots will also reduce the performance of terminal devices using control channels for sensing.

[0134] 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.

[0135] It is understood that the schematic diagrams of the methods in this application use network devices and terminal devices as examples of the execution entities of the interactive diagrams to illustrate the methods, but this application does not limit the execution entities of the interactive diagrams. For example, the network device in the figure can also be a module applied to the network device (such as a chip, a chip system, or a processor), or a logical node, a logical module, or software that can implement all or part of the functions of the network device; the terminal device in the figure can also be a module applied to the terminal device (such as a chip, a chip system, or a processor), or a logical node, a logical module, or software that can implement all or part of the functions of the terminal device.

[0136] As shown in FIG5 , the method 200 includes at least the following steps. It should be noted that the steps indicated by dashed lines in FIG5 are optional and will not be described in detail in the following text:

[0137] S210: The network device determines a first signal and a first resource.

[0138] S211, the terminal device determines the first resource.

[0139] The first signal is used to carry downlink control information (DCI) and is also used to generate an echo signal, which is used for target perception. The first signal may also be referred to as 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 generated by reflection or refraction after the first signal encounters a moving or stationary object or gas in the physical environment during propagation.

[0140] The first signal may be generated by encoding, modulating, or otherwise processing the DCI. The first signal may include N signal elements, each corresponding to the same signal. It should be understood that a signal element is part of a control channel and may be referred to as a control channel element (CCE) or a control element (CE), which is not limited in this application.

[0141] The first resource is a resource for sending the 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. This application does not limit this.

[0142] The first resource includes N resource groups, any of the N resource groups includes M subcarriers on one 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; or a multiple of 8, such as 8 and 16, etc., which is not limited in this application.

[0143] The time unit can be a time slot. In the embodiment of the present application, the time slot is used as an example for illustration. In other implementation methods, the time unit can also be a frame, subframe or other time domain division unit. The present application does not limit this.

[0144] It should be noted that mapping the first signal to the first resource by the network device can be understood as a step in the network device determining the first signal and the first resource. Step S210 can also be expressed as "the network device generates the first signal." The network device generates the first signal by encoding the data information carried by the communication sensing channel, scrambling, modulating, multi-antenna correlation processing (only for multiple antennas), resource mapping (i.e., the network device maps the first signal to the first resource), and OFDM baseband signal generation and processing.

[0145] 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.

[0146] 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 and coding strategy MCS corresponding to the first signal.

[0147] It should be understood that the first indication information can directly indicate the number N of signal elements, or the number N of resource groups, or the number of time units corresponding to the time domain positions of N resource groups and N time domain symbols, thereby determining the number N of signal elements.

[0148] 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.

[0149] Exemplarily, as shown in FIG6 , a time slot includes 14 symbols, and the resource group included in the first resource is the first symbol of each time slot.

[0150] As another example, as shown in FIG7 , the resource group included in the first resource is the first and second symbols of each time slot.

[0151] The number of time units corresponding to N time domain symbols refers to the number of time units occupied by the first resource.

[0152] For example, as shown in FIG6 , symbols with the same number correspond to a synaesthesia control channel, where there are 4 symbols numbered 1, that is, 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.

[0153] As another example, as shown in Figure 7, the 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.

[0154] The first indication information may indicate the number M of subcarriers included in each of the N resource groups.

[0155] 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.

[0156] 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.

[0157] Exemplarily, the first indication information may indicate the frequency domain positions of the M subcarriers of a resource group, and then indicate that the frequency domain positions of the M subcarriers of other resource groups are the same; the first indication information may also indicate the frequency domain positions of the M subcarriers of each resource group, for example, through a predefined correspondence table, etc.

[0158] The network device maps the first signal to M subcarriers. The M subcarriers may be continuous or spaced apart. For example, the first signal is mapped in the frequency domain at equal intervals of 1 or 2 subcarriers, or continuously occupies multiple subcarriers. By configuring the number of subcarriers M, the resources occupied by sending the perception signal can be reduced, reducing overhead and improving resource utilization.

[0159] The modulation and coding strategy MCS refers to the modulation mode and coding rate corresponding to each resource group on the first resource.

[0160] For example, the first indication information may indicate the MCS index corresponding to each resource group in the N resource groups. For example, 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.

[0161] 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 with a total of 4 states (00, 01, 10, 11). State 00 indicates that the synaesthesia control channel has 1 symbol in a time slot, i.e., includes the first symbol in a time slot. State 01 indicates that the synaesthesia control channel has 2 symbols in a time slot, i.e., includes 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, i.e., includes symbols 1 to 3 in a time slot. State 11 is a reserved state and is not used for indication, as shown in Table 2 below.

[0162] Exemplarily, as shown in FIG6 , the first field may be 00 at this time.

[0163] As another example, as shown in FIG7 , the first field may be 01 at this time.

[0164] Table 2: Indication status of the first field

[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] Exemplarily, as shown in FIG6 , the second field may be 01 at this time.

[0167] As another example, as shown in FIG7 , the second field may be 10 at this time.

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

[0169] As another example, the second field may contain 3 bits and 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.

[0170] Table 4: Indication status of the second field

[0171] 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 third field can directly indicate the modulation mode and coding rate of the first signal. Furthermore, exemplarily, the third field can indicate the MCS index value corresponding to each symbol, such as the MCS Index value in Table 1, or an MCS Index value in another table. The modulation mode and coding rate corresponding to the MCS index value can be obtained by looking up the table.

[0172] In one possible implementation, the first indication information may indicate the number N of signal elements included in the first signal and the resource configuration of the N resource groups by indicating one of multiple predefined or preconfigured configuration combinations. For example, multiple configurations may be pre-set: Configuration 1 indicates that the synaesthesia control channel has one symbol in one time slot and the first signal is distributed across two different time slots; Configuration 2 indicates that the synaesthesia control channel has one symbol in one time slot and the first signal is distributed across four different time slots; Configuration 3 indicates that the synaesthesia control channel has one symbol in one time slot and the first signal is distributed across eight different time slots; Configuration 4 indicates that the synaesthesia control channel has two symbols in one time slot and the first signal is distributed across two different time slots; Configuration 5 indicates that the synaesthesia control channel has two symbols in one time slot and the first signal is distributed across four different time slots; Configuration 6 indicates that the synaesthesia control channel has two symbols in one time slot and the first signal is distributed across eight different time slots, and so on. The first indication information may directly indicate which specific configuration to use. Regarding the setting method of multiple configurations, the above method is only a possible embodiment and this application does not limit it.

[0173] The first indication information can be carried in 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.

[0174] 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-layer signaling, which can be more reliable and suitable for scenarios where the indication content changes relatively slowly.

[0175] 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.

[0176] The second indication information is used to indicate configuration information of the second signal, and the second signal is used to carry downlink control information.

[0177] 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.

[0178] The time domain symbols occupied by the second signal belong to one time unit.

[0179] The second signal is only used for communication and not for sensing. The second signal can be called a communication control channel or simply a control channel.

[0180] 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.

[0181] S230, the network device sends a first signal on the first resource; correspondingly, the terminal device receives the first signal on the first resource.

[0182] The network device sends a first signal to the terminal device on a first resource. Optionally, the network device sends the first signal on mapped 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 mapped resources corresponding to multiple antenna ports.

[0183] 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.

[0184] The first signal will be reflected after encountering the sensing target, generating an echo signal. The sensing device can receive the echo signal of the first signal for sensing.

[0185] The echo signal refers to the electromagnetic feedback signal generated by the transmission, scattering and reflection of electromagnetic waves through the sensed target.

[0186] The device receiving the echo signal may be the network device that sends the first signal, or may be other network devices.

[0187] Method 1: S240, the network device receives the echo signal of the first signal for perception.

[0188] Method 2: S241, network device 2 receives the echo signal of the first signal for perception.

[0189] 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.

[0190] The network device can obtain a 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, movement speed, or physical dimensions of the perceived target from the network device. In this way, the network device can further use the perception result to assist in communication and improve communication quality. It should be noted that the perception function and communication function can be implemented by the same network device or by multiple network devices working together, and this is not limited in the embodiments of the present application.

[0191] S250: The terminal device senses the first signal.

[0192] The first signal carries DCI, which can indicate resources of the PDSCH. Therefore, optionally, the terminal device can receive the PDSCH according to the resources indicated by the DCI in the first signal.

[0193] For the terminal device, after the first signal is sent by the network device, it is affected by the perception target and may be transmitted, scattered, or reflected by the perception target. The content of the signal does not change, but the terminal device can perceive it through the first signal.

[0194] That is, the first signal can complete the communication function while completing the perception.

[0195] According to the embodiments provided in this application, the perception performance in networking scenarios can be improved.

[0196] It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. 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. This 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. This application does not limit this. Any sequential arrangement that can realize the function of each step should be within the scope of protection of this application.

[0197] In the embodiments of the present application, a control channel is modulated into at least two identical signal elements and transmitted as at least two symbols mapped to at least two time units. This can reduce interference between network devices in networking scenarios and improve the ability of network devices to perceive using the control channel. Furthermore, it can improve the ability of terminal devices to perceive using the control channel. In summary, this solution can improve the efficiency and performance of the integrated perception and communication system.

[0198] According to the aforementioned method, FIG8 is a schematic diagram of a wireless communication apparatus 300 provided in an embodiment of the present application.

[0199] As shown in FIG. 8 , the communication device 300 may include an interface unit 310 and a processing unit 320 .

[0200] In one possible design, the communication device 300 may correspond to the network device (or base station or gNB) in the above method embodiment.

[0201] 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 configured to 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, 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. 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;

[0202] The interface unit 310 in the communication device 300 is configured to send a first signal on a first resource, where N signal elements correspond one-to-one to N resource groups.

[0203] In a possible implementation, 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 sensing according to the echo signal.

[0204] In a possible embodiment, 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 and coding strategy MCS corresponding to the first signal.

[0205] Optionally, 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.

[0206] In a possible embodiment, the interface unit 310 is also used to: send second indication information, where the second indication information is used to indicate configuration information of the second signal, 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 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, where the symbol occupied by the second signal belongs to a time unit.

[0207] 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.

[0208] 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 in 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, 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 based on the echo signal.

[0209] In another possible design, the communication device 300 may also correspond to the terminal device in the above method embodiment.

[0210] 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, where the first resource includes N resource groups, any one of the N resource groups includes M subcarriers on a time domain symbol, N resource groups correspond to N time domain symbols, and 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 interface unit 310 is used to receive a first signal on the first resource, where the first signal is used to carry downlink control information, and 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.

[0211] In a possible implementation, the processing unit 320 is further configured to perform perception according to the first signal.

[0212] In a possible embodiment, the interface unit 310 is also used to: receive first indication information, which 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.

[0213] Optionally, 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.

[0214] In a possible embodiment, the interface unit 310 is also used to: send second indication information, where the second indication information is used to indicate configuration information of the second signal, 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 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, where the symbol occupied by the second signal belongs to a time unit.

[0215] 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.

[0216] According to the aforementioned method, Figure 9 is a schematic diagram of a communication device 400 provided in an embodiment of the present application. As shown in Figure 9, the device 400 can be a terminal device or a network device.

[0217] The apparatus 400 may include a processor 410 (ie, an example of a processing unit) and a memory 420. The memory 420 is configured to store instructions, and the processor 410 is configured to execute the instructions stored in the memory 420 so that the apparatus 400 implements the steps performed by the terminal device or network device in the method 200.

[0218] Furthermore, the apparatus 400 may also include an interface 430 (i.e., an example of an interface unit module). Furthermore, the processor 410, memory 420, and 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 execute the computer program from the memory 420 to control the interface 430 to receive or send signals, thereby completing the steps of the terminal device or network device in the above method. The memory 420 may be integrated into the processor 410 or may be provided separately from the processor 410.

[0219] In one possible implementation, if the communication apparatus 400 is a communication device, 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.

[0220] 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.

[0221] As an implementation method, 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.

[0222] As another implementation, a general-purpose computer may be used to implement the communication device provided in the embodiments of the present application. Specifically, the program code implementing the functions of the processor 410 and the interface 430 may be stored in the memory 420, and the general-purpose processor may execute the code in the memory 420 to implement the functions of the processor 410 and the interface 430.

[0223] For the concepts, explanations, detailed descriptions and other steps involved in the device 400 and related to the technical solutions provided in the embodiments of the present application, please refer to the descriptions of these contents in the aforementioned methods or other embodiments, and will not be repeated here.

[0224] Figure 10 is a schematic diagram of the structure of a terminal device 50 provided by this application. For ease of illustration, Figure 10 only shows the main components of the communication device. As shown in Figure 10, the terminal device 50 includes a processor, memory, control circuitry, an antenna, and input / output devices.

[0225] The processor is primarily used to process communication protocols and communication data, control the entire terminal device, execute software programs, and process software program data, such as supporting the terminal device in executing the actions described in the embodiment of the method for indicating a transmission precoding matrix. The memory is primarily used to store software programs and data, such as the codebook described in the above embodiment. The control circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The control circuit and antenna together are also called a transceiver, which is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, displays, and keyboards, are primarily used to receive user input and output data to the user.

[0226] When the communication device is powered on, the processor reads the software program stored in the storage unit, interprets and executes the software program's instructions, and processes the software program's data. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be transmitted and outputs the baseband signal to the RF circuit. The RF circuit then performs RF processing on the baseband signal and transmits it outward in the form of electromagnetic waves via the antenna. When data is sent to a terminal device, the RF circuit receives the RF signal via 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.

[0227] Those skilled in the art will appreciate that, for ease of explanation, FIG10 shows only one memory and processor. In an actual terminal device, multiple processors and memories may exist. The memory may also be referred to as a storage medium or storage device, etc., which is not limited in the present embodiment.

[0228] As an optional implementation, the processor may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily responsible for processing communication protocols and communication data, while the CPU is primarily responsible for controlling the entire terminal device, executing software programs, and processing data from these programs. The processor in Figure 10 integrates the functions of both the baseband processor and the CPU. Those skilled in the art will appreciate that the baseband processor and the CPU may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal device may include multiple baseband processors to accommodate different network standards, multiple CPUs to enhance its processing capabilities, and that the various components of the terminal device may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The CPU may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored as a software program in a storage unit, with the processor executing the software program to implement the baseband processing functionality.

[0229] As shown in Figure 10, terminal device 50 includes an interface unit 51 and a processing unit 52. The interface unit may also be referred to as a transceiver, transceiver, transceiver device, etc. Optionally, the device in interface unit 51 that implements the receiving function may be considered a receiving unit, and the device in interface unit 51 that implements the transmitting function may be considered a transmitting unit. That is, interface unit 51 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, receiver, receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, transmitter, or transmitting circuit, etc.

[0230] The terminal device shown in FIG10 can execute each action executed by the terminal device in method 200 . Here, in order to avoid redundancy, detailed description thereof is omitted.

[0231] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method executed by the network device or terminal device in the above method embodiment are stored.

[0232] 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.

[0233] 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 the method executed by a network device in the above method embodiment.

[0234] An embodiment of the present application further provides a communication system, which includes the network device and terminal device in the above embodiment.

[0235] 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.

[0236] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), or 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 any conventional processor.

[0237] 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).

[0238] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using 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 program 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, computer, server or data center to another website, computer, server or data center via a wired (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer 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 drive.

[0239] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0240] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of 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. Those skilled in the art will clearly understand 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 the 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. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. On the other hand, 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.

[0241] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, the functional units in the various embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. If the functions are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the portion that contributes to the prior art, or the portion of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[0242] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection 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: An echo signal of a first signal is received 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 in 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 The signal element corresponds 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 to the N resource groups one by one; 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, the first signal being used to carry 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 of the N resource groups comprising M subcarriers on a time domain symbol, the N resource groups corresponding to the 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 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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