Communication method and apparatus

Abstract

A communication method and apparatus, applied to the technical field of communications. The method comprises: sending first information, wherein the first information indicates M carriers, wherein signals sent on the M carriers meet a time domain error condition and / or a frequency domain error condition, and M is an integer greater than or equal to 2; and sending signals, wherein the signals are used for sensing. The embodiments of the present application can improve the sensing performance.

Description

Communication method and device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 27, 2023, with application number 202311825952.2 and application name "A Communication Method and Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0004] As fifth-generation (5G) mobile communication systems evolve toward 5G-advanced (5G-A) technology, integrated communication and perception technology is considered a key technology for expanding the service capabilities of mobile communication networks. The core concept of this integrated communication and perception technology is to add perception capabilities to mobile communication networks, building capabilities such as target detection, tracking, and imaging. This allows communication and perception capabilities to coexist harmoniously and benefit from each other within a single network. The principle of perception technology is that a transmitting device sends radio waves (i.e., perception signals, or signals used for perception) in a specific direction. When these radio waves strike the target surface, they generate reflected radio waves (i.e., echo signals of the perception signals). The receiving device then receives and processes these reflected waves to obtain perception data, such as the target's location, speed, or type.

[0005] Currently, in scenarios such as dual connectivity (DC) or carrier aggregation (CA), terminal devices can send perception signals on multiple carriers, but the perception performance based on the perception signals sent on multiple carriers needs to be improved. Summary of the Invention

[0006] The embodiments of the present application provide a communication method and device, which are conducive to improving perception performance.

[0007] When a terminal device sends a perception signal on multiple carriers, the receiving end of the perception signal can process the perception signal on each carrier separately, or can jointly process the perception signals on multiple carriers. The joint processing method can achieve higher perception performance, but it also puts forward requirements on the ability of the terminal device to send signals on multiple carriers. If the receiving end jointly processes the perception signal that does not meet the requirement, it may affect the accuracy of the perception result. The present application provides a communication method and apparatus, which reports the carriers that meet the time domain error condition and / or frequency domain error condition of the terminal device, or reports the time domain error information and frequency domain error information of the signal sent by the terminal device on multiple carriers by the terminal device, so that the network device can select a suitable signal processing algorithm (for example, jointly processing the perception signals sent on multiple carriers) according to the report of the terminal device, thereby improving the perception performance.

[0008] In the first aspect, the present application provides a communication method, which can be performed by a first communication device. The first communication device can be, for example, a terminal device, or a component in the terminal device (such as a chip or chip system, etc.), or a component that implements part of the functions of the terminal device, without limitation. Taking the execution subject as an example of a terminal device, the method may include: the terminal device sends first information; the terminal device sends a signal, which is used for perception. The first information is implemented as follows:

[0009] Method 1: The first information indicates M carriers, and the signals sent on the M carriers meet the time domain error condition and / or the frequency domain error condition, or it can be expressed as, the M carriers meet the time domain error condition and / or the frequency domain error condition, and M is an integer greater than or equal to 2.

[0010] Method 2: The first information indicates a time domain error value and / or a frequency domain error value, and the signal sent on M carriers satisfies the time domain error value and / or the frequency domain error value, or it can be expressed as, M carriers satisfy the time domain error value and / or the frequency domain error value, and M is an integer greater than or equal to 2.

[0011] Method 3: The first information indicates whether the signal sent on M carriers meets the time domain error condition and / or the frequency domain error condition, or expressed as follows: the first information indicates whether the M carriers meet the time domain error condition and / or the frequency domain error condition, where M is an integer greater than or equal to 2.

[0012] Using the above method, the terminal device can report through the first information, so that the network device can select an appropriate signal processing algorithm based on the first information, thereby improving the performance of perception. For example, when the first information indicates M carriers, the network device can jointly process the perception signals sent on the M carriers. For another example, when the first information indicates a time domain error value and / or a frequency domain error value, the network device can determine whether to jointly process the perception signals sent on the M carriers based on whether the time domain error value and / or the frequency domain error value meet the joint processing requirements.

[0013] It should be understood that the signal sent by the terminal device is the actual signal sent. The signal may be a signal sent on M carriers, or a signal sent on some of the M carriers. The signal may also include a signal sent on a carrier other than the M carriers, and this application does not impose any restrictions.

[0014] In the second aspect, the present application provides a communication method, which can be performed by a second communication device. The second communication device can be, for example, a network device, or a component in a network device (such as a chip or a chip system, etc.), or a component that implements part of the functions of the network device (such as a centralized unit (CU), a distributed unit (DU) or a wireless unit (RU), etc.), without limitation. Taking the execution subject as a network device as an example, the method may include: the network device receives the first information; the network device receives a signal or an echo signal of the signal, which is used for perception. The first information is implemented as follows:

[0015] Method 1: The first information indicates M carriers, and the signals sent on the M carriers meet the time domain error condition and / or the frequency domain error condition, or it can be expressed as, the M carriers meet the time domain error condition and / or the frequency domain error condition, and M is an integer greater than or equal to 2.

[0016] Method 2: The first information indicates a time domain error value and / or a frequency domain error value, and the signal sent on M carriers satisfies the time domain error value and / or the frequency domain error value, or it can be expressed as, M carriers satisfy the time domain error value and / or the frequency domain error value, and M is an integer greater than or equal to 2.

[0017] Method 3: The first information indicates whether the signal sent on M carriers meets the time domain error condition and / or the frequency domain error condition, or expressed as follows: the first information indicates whether the M carriers meet the time domain error condition and / or the frequency domain error condition, where M is an integer greater than or equal to 2.

[0018] Using the above method, the network device can select an appropriate signal processing algorithm based on the first information reported by the terminal device, thereby improving perception performance. For example, when the first information indicates M carriers, the network device can jointly process the perception signals sent on the M carriers. For another example, when the first information indicates a time domain error value and / or a frequency domain error value, the network device can determine whether to jointly process the perception signals sent on the M carriers based on whether the time domain error value and / or the frequency domain error value meet the joint processing requirements.

[0019] It should be understood that the signal received by the network device or the echo signal of the signal is the signal or echo signal actually received by the network device. The signal or echo signal may be a signal received on M carriers, or a signal received on some of the M carriers. The signal may also include a signal received on a carrier other than the M carriers, and this application does not impose any restrictions.

[0020] In combination with the second aspect, optionally, the network device performs perception based on the received signal or the echo signal of the signal.

[0021] In combination with the first aspect or the second aspect, optionally, the M carriers indicated by the first information are supported by the terminal device, and the signal sent by the terminal device on the M carriers satisfies the time domain error condition and / or the frequency domain error condition; or, the time domain error value and / or the frequency domain error value indicated by the first information are supported by the terminal device, and the signal sent by the terminal device on the M carriers satisfies the time domain error value and / or the frequency domain error value; or, the first information indicates whether the signal sent by the terminal device on the M carriers satisfies the time domain error condition and / or the frequency domain error condition.

[0022] It should be understood that the M signals described below are M signals transmitted on M carriers. The term "transmission" is used to describe the terminal device's signal transmission capability and is hypothetical. In an actual system, the terminal device may not transmit these M signals, and the network device may not receive these M signals. These M signals can also be assumed to be transmitted using the full bandwidth.

[0023] In combination with the first aspect or the second aspect, optionally, the time domain error condition is implemented as follows:

[0024] Mode 1: The time interval between any two signals among the M signals is less than or equal to the first threshold, or expressed as the maximum time interval between any two signals among the M signals is equal to the first threshold.

[0025] Method 2: The time interval between the time domain position of each signal in the M signals and the first time domain position is less than or equal to the first threshold, or expressed as follows: the maximum time interval between the time domain position of each signal in the M signals and the first time domain position is equal to the first threshold.

[0026] Mode 3: the time interval between the timings of any two carriers among the M carriers is less than or equal to the first threshold, or in other words, the maximum time interval between the timings of any two carriers among the M carriers is equal to the first threshold.

[0027] Furthermore, the first threshold may be a time domain error value in nanoseconds, and the first threshold is less than 65 ns, for example, the first threshold is 10 ns.

[0028] In combination with the first aspect or the second aspect, optionally, the frequency domain error condition is a frequency domain error condition satisfied between different carriers or between signals sent on different carriers. The frequency domain error condition is implemented as follows:

[0029] Mode 1: The absolute value of the difference between the center frequencies of any two carriers among the M carriers and the first frequency interval is less than or equal to the second threshold, or is expressed as follows: the maximum value of the absolute value of the difference between the center frequencies of any two carriers among the M carriers and the first frequency interval is equal to the second threshold, or is expressed as follows: the value of the frequency interval between the center frequencies of any two carriers among the M carriers modulo the first subcarrier interval is less than or equal to the second threshold, or is expressed as follows: the maximum value of the frequency interval between the center frequencies of any two carriers among the M carriers modulo the first subcarrier interval is equal to the second threshold.

[0030] The first frequency interval may be an integer multiple of the first subcarrier spacing, or may be expressed as Kf, where K is a positive integer and f is the first subcarrier spacing. The first subcarrier spacing may be the minimum subcarrier spacing among the subcarrier spacings configured / supported by the system, or any one of the subcarrier spacings configured / supported by the system, or a subcarrier spacing of any size specified in the protocol, and this application does not impose any restrictions.

[0031] Mode 2: The absolute value of the difference between the frequency interval between any two of the M signals and the first frequency interval is less than or equal to the second threshold, or it can be expressed as follows: the maximum value of the absolute value of the difference between the frequency interval between any two of the M signals and the first frequency interval is equal to the second threshold, or it can be expressed as follows: the value of the frequency interval between any two of the M signals modulo the first subcarrier interval is less than or equal to the second threshold, or it can be expressed as follows: the maximum value of the frequency interval between any two of the M signals modulo the first subcarrier interval is equal to the second threshold.

[0032] The first frequency interval may be an integer multiple of the first subcarrier spacing, or may be expressed as Kf, where K is a positive integer and f is the first subcarrier spacing. The first subcarrier spacing may be the minimum subcarrier spacing among the subcarrier spacings configured / supported by the system, or any one of the subcarrier spacings configured / supported by the system, or a subcarrier spacing of any size specified in the protocol, and this application does not impose any restrictions.

[0033] Furthermore, the second threshold may be a frequency domain error value in the hundreds of hertz range, for example, the second threshold is 100 Hz.

[0034] In combination with the first aspect or the second aspect, optionally, the time domain error condition and / or the frequency domain error condition meets the joint processing requirements, or meets the coherent detection conditions.

[0035] In combination with the first aspect or the second aspect, optionally, in implementation method 2 of the first information, the first information does not indicate whether the time domain error condition and / or the frequency domain error condition are met or not, but indicates the time domain error value and / or the frequency domain error value. The time domain error value can refer to the above-mentioned first threshold, and the frequency domain error value can refer to the above-mentioned second threshold. The terminal device reports the value of the first threshold and / or the second threshold that it can reach as the time domain error value and / or the frequency domain error value through the first information. In implementation method 2 of the first information, satisfying the time domain error value and / or the frequency domain error value can be understood as satisfying the time domain error condition when the first threshold takes the time domain error value and / or satisfying the frequency domain error condition when the second threshold takes the frequency domain error value.

[0036] In combination with the first aspect or the second aspect, optionally, corresponding to implementation methods 1-3 of the first information, there is a corresponding indication method.

[0037] Corresponding implementation method 1: the first information includes N sub-information, the N sub-information corresponds to N carriers respectively, N is an integer greater than or equal to M, and the M carriers are part or all of the N carriers; the M sub-information corresponding to the M carriers in the N sub-information indicates the first state, and the NM sub-information in the N sub-information other than the M sub-information indicates the second state.

[0038] Corresponding to implementation method 2: the first information includes a time domain error value and / or a frequency domain error value. Further, the first information also includes indication information indicating M carriers. The indication information indicating M carriers can refer to the indication method corresponding to implementation method 1.

[0039] Corresponding to Implementation 3: The first information includes a third state or a fourth state, the third state indicating that the signal transmitted on the M carriers satisfies the time domain error condition and / or the frequency domain error condition, and the fourth state indicating that the signal transmitted on the M carriers does not satisfy the time domain error condition and / or the frequency domain error condition. Furthermore, the first information also includes indication information indicating the M carriers. The indication information indicating the M carriers can refer to the indication method corresponding to Implementation 1.

[0040] In combination with the first aspect or the second aspect, optionally, the above-mentioned signal is a perception signal, a sounding reference signal, a demodulation reference signal, or a physical uplink shared channel (PUSCH).

[0041] In combination with the first aspect or the second aspect, optionally, at least two of the above signals respectively use different radio access technologies. Different radio access technologies include long term evolution (LTE), 5G new radio (NR), sixth generation (6G) radio access technology, or future evolved radio access technology, which is not limited in this application.

[0042] In combination with the first aspect or the second aspect, optionally, the first information is carried in radio resource control (RRC) signaling, or in uplink control information (UCI), or in a media access control element (MAC CE).

[0043] In a third aspect, the present application further provides a communication device. The communication device is used to execute the method described in the first aspect and any possible design thereof. The communication device is, for example, a first communication device.

[0044] In one possible design, the communication device includes a baseband device and a radio frequency device.

[0045] In another possible design, the communication device includes a processing module (sometimes also referred to as a processing unit) and a transceiver module (sometimes also referred to as a transceiver unit). The transceiver module can implement both sending and receiving functions. When the transceiver module implements the sending function, it can be referred to as a sending module (sometimes also referred to as a sending unit); when the transceiver module implements the receiving function, it can be referred to as a receiving module (sometimes also referred to as a receiving unit). The sending module and the receiving module can be the same functional module, which is referred to as a transceiver module and can implement both sending and receiving functions; alternatively, the sending module and the receiving module can be different functional modules, with the transceiver module being a general term for these functional modules.

[0046] Optionally, the communication device may include: a transceiver module, used to send the first information; the transceiver module is also used to send a signal, and the signal is used for perception.

[0047] In a fourth aspect, the present application further provides a communication device. The communication device is used to execute the method described in the second aspect and any possible design thereof. The communication device is, for example, the second communication device.

[0048] In one possible design, the communication device includes a baseband device and a radio frequency device.

[0049] In another possible design, the communication device includes a processing module (sometimes also referred to as a processing unit) and a transceiver module (sometimes also referred to as a transceiver unit). The transceiver module can implement both sending and receiving functions. When the transceiver module implements the sending function, it can be referred to as a sending module (sometimes also referred to as a sending unit); when the transceiver module implements the receiving function, it can be referred to as a receiving module (sometimes also referred to as a receiving unit). The sending module and the receiving module can be the same functional module, which is referred to as a transceiver module and can implement both sending and receiving functions; alternatively, the sending module and the receiving module can be different functional modules, with the transceiver module being a general term for these functional modules.

[0050] Optionally, the communication device may include: a transceiver module, used to receive the first information; the transceiver module is also used to receive a signal, and the signal is used for sensing.

[0051] In combination with the third aspect or the fourth aspect, the description of the first information, signal, time domain error condition and / or frequency domain error condition, etc. can refer to the first aspect or the second aspect and will not be repeated here.

[0052] In a fifth aspect, the present application further provides a communication device. The communication device may include one or more processors. Optionally, the communication device may further include a memory. The memory is configured to store one or more computer programs or instructions. The one or more processors are configured to execute the one or more computer programs or instructions, so that the communication device performs the method described in the first aspect or the second aspect above, and any possible design thereof.

[0053] In a sixth aspect, the present application further provides a communication system, which includes one or more of the following: the communication device described in the third aspect, or the communication device described in the fourth aspect.

[0054] In the seventh aspect, the present application also provides a computer-readable storage medium, which is used to store computer programs or instructions. When the computer-readable storage medium is executed, the method described in the above-mentioned first aspect or second aspect and any possible design thereof is implemented.

[0055] In an eighth aspect, the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the method described in the above-mentioned first aspect or second aspect and any possible design thereof to be implemented.

[0056] In a ninth aspect, the present application further provides a chip system comprising at least one processor configured to read and execute program instructions in a memory, so that the chip system implements the method described in the first aspect and any possible design thereof, or implements the method described in the second aspect and any possible design thereof. Alternatively, the chip system may be composed of a chip, or may include a chip and other discrete components, without limitation.

[0057] The technical effects that can be achieved in the above-mentioned third to ninth aspects and any possible design thereof may refer to the technical effects that can be achieved in the above-mentioned first aspect and any possible design thereof, and no further details will be given. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] FIG1 is a schematic diagram of a network architecture of a communication system;

[0059] FIG2 is a schematic diagram of a perception scenario;

[0060] FIG3 is a schematic diagram of intra-band CA and inter-band CA provided by an embodiment of the present application;

[0061] FIG4 is a schematic diagram of intra-station CA and inter-station CA provided by an embodiment of the present application;

[0062] FIG5 is a schematic diagram of a DC at the same site provided in an embodiment of the present application;

[0063] FIG6 is a schematic diagram of a DC at an off-site location provided in an embodiment of the present application;

[0064] FIG7 is a flow chart of a communication method provided in an embodiment of the present application;

[0065] FIG8 is a schematic diagram of a time domain error condition in the case of two carriers provided by the present application;

[0066] FIG9 is a schematic diagram of a frequency domain error condition in the case of two carriers provided by the present application;

[0067] FIG10 is a schematic diagram of ideal signal transmission in the case of two carriers provided by the present application;

[0068] FIG11 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0069] FIG12 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0070] FIG13 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] The network architecture and business scenarios described in this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0072] In the embodiments of the present application, "multiple" may refer to two or more. In view of this, in the embodiments of the present application, "multiple" may also be understood as "at least two". "At least one" may be understood as one or more, for example, one, two or more. For example, "including at least one" means including one, two or more. For example, including at least one of A, B and C, then included may be A, B, C, A and B, A and C, B and C, or A, B and C. "And / or" describes the association relationship of associated objects. Specifically, there may be three relationships. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0073] In addition, the terms "system" and "network" in the embodiments of the present application may be used interchangeably, and "according to" and "based on" may be used interchangeably.

[0074] In the embodiments of this application, ordinal numbers such as "first" and "second" are generally used to distinguish different objects and are not used to define the order, timing, priority, or importance of multiple objects. For example, in the embodiments of this application, the first communication device and the second communication device are used to distinguish between two communication devices and do not define the priority or importance of the two communication devices.

[0075] The embodiments of the present application will be presented around a system including multiple devices, components, modules, etc. It should be understood that the system may include other devices, components, modules, etc. not mentioned, or may only include some of the devices, components, or modules, etc. mentioned in the embodiments.

[0076] The following first introduces a communication system to which the embodiments of the present application are applicable.

[0077] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, universal mobile telecommunications system (UMTS), wireless local area network (WLAN), short-range wireless communication systems (such as sidelink, wireless fidelity (Wi-Fi), Bluetooth, etc.), wired networks, vehicle-to-everything (V2X) communication systems, device-to-device (D2D) communication systems, Internet of Vehicles communication systems, 4th generation (4G) mobile communication systems (such as long term evolution (LTE) systems), LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, worldwide interoperability for microwave access (WiMAX) communication systems, fifth generation (5G) mobile communication systems (such as new radio (NR) systems), future communication systems (such as sixth generation (6G) systems), and the like. The present invention relates to a mobile communication system (generation, 6G) or other similar communication systems, without limitation. The embodiments of the present application are described using the communication system shown in FIG1 as an example. When the technical solutions of the embodiments of the present application are applied to other communication systems, the devices, components, modules, etc. in the embodiments can be replaced with corresponding devices, components, modules in other communication systems without limitation.

[0078] Figure 1 is a schematic diagram of the architecture of the communication system used in the embodiment of the present application. As shown in Figure 1, the communication system includes an access network 100 and a core network 200. Optionally, the communication system may also include the Internet 300. The access network 100 may include at least one radio access network (RAN) node, such as 110a and 110b in Figure 1, and may also include at least one terminal device, such as 120a-120j in Figure 1. 110a is a base station, 110b is a micro station, 120a, 120e, 120f, and 120j are mobile phones, 120b is a car, 120c is a gas pump, 120d is a home access point (HAP) arranged indoors or outdoors, 120g is a laptop, 120h is a printer, and 120i is a drone. The same terminal device or network device can provide different functions in different application scenarios. For example, in FIG1 , there are mobile phones 120 a , 120 e , 120 f , and 120 j . Mobile phone 120 a can access base station 110 a , connect to car 120 b , communicate directly with mobile phone 120 e , and access HAP. Car 120 b can access HAP and communicate directly with mobile phone 120 a . Mobile phone 120 f can access micro station 110 b , connect to laptop computer 120 g , and connect to printer 120 h . Mobile phone 120 j can control drone 120 i .

[0079] A network device is a network-side device with wireless transceiver capabilities. A network device can be a device in a radio access network (RAN) that provides wireless communication capabilities for terminal devices, and is called a RAN device. The RAN can be an access network in the 3rd Generation Partnership Project (3GPP), such as 4G, 5G, or future-oriented 6G networks. The RAN can also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a communication network of two or more of the above networks.

[0080] RAN equipment can also be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system.

[0081] The RAN device can also be a module or unit that performs some of the functions of the base station, for example, it can be a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here performs the functions of the radio resource control protocol and packet data convergence protocol (PDCP) of the base station, and can also perform the function of the service data adaptation protocol (SDAP); the DU performs the functions of the radio link control layer and medium access control (MAC) layer of the base station, and can also perform some or all of the physical layer functions. For detailed descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU can be set separately, or they can be included in the same network element, such as the 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). In different systems, CU, DU or RU may 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, and RU may also be called O-RU. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The network device may be a macro base station (such as 110a in Figure 1), a micro base station or an indoor station (such as 110b in Figure 1), a relay node or a donor node, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the network device.

[0082] In the embodiments of the present application, the functions of the network device may be performed by a module (such as a chip) in the network device, or by a control subsystem that includes the network device functions. The control subsystem that includes the network device functions may be a control center in the aforementioned application scenarios such as smart grid, industrial control, smart transportation, and smart city.

[0083] A terminal device is a user-side device with wireless transceiver capabilities. A terminal device may also be referred to as a terminal, user equipment (UE), mobile station, mobile terminal, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminal devices may be mobile phones, tablet computers, computers with wireless transceiver capabilities, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. In the embodiments of the present application, the device for implementing the function of the terminal device may be the terminal device, or may be a device that can support the terminal device to implement the function, such as a chip system or a combination of devices or components that can implement the terminal device function, which may be installed in the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0084] In the embodiment of the present application, the functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or may be performed by a device that includes the functions of the terminal device.

[0085] Network devices and terminal devices can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; on water; and in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of network devices and terminal devices.

[0086] The roles of network devices and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile network device. To terminal devices 120j accessing the wireless access network 100 via 120i, terminal device 120i is a network device. However, to network device 110a, 120i is a terminal device, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via an interface protocol between network devices. In this case, 120i is also a network device relative to 110a. Therefore, both network devices and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be referred to as communication devices with network device functionality, while 120a-120j in Figure 1 can be referred to as communication devices with terminal device functionality.

[0087] Network devices and terminal devices, network devices and network devices, and terminal devices and terminal devices can communicate through licensed spectrum, through unlicensed spectrum, or through both licensed and unlicensed spectrum at the same time, without any restrictions.

[0088] In the embodiments of the present application, a transmitting device refers to the transmitter of a sensing signal, and a receiving device refers to the receiver of an echo signal of the sensing signal. For example, the transmitting device may be the terminal device in Figure 1 , and the receiving device may be the network device in Figure 1 ; alternatively, both the transmitting device and the receiving device may be the terminal devices in Figure 1 , without limitation.

[0089] Perception technology can generally be divided into two modes: single-station perception and dual-station perception. The single-station perception mode refers to the case where the transmitter device of the perception signal and the receiver device of the echo signal of the perception signal are the same device. In other words, in the single-station perception mode, the transmitter device must both transmit the perception signal and receive the echo signal reflected by the perception signal on the target surface. Therefore, the single-station perception mode can also be referred to as the self-transmitting and self-receiving mode, without limitation. The dual-station perception mode refers to the case where the transmitter device of the perception signal and the receiver device of the echo signal of the perception signal are two different devices. In other words, perception station A transmits the perception signal, and the echo signal reflected by the perception signal on the target surface is received by perception station B. Therefore, the dual-station perception mode can also be referred to as the A-transmitting, B-receiving mode.

[0090] Figure 2 exemplarily shows a schematic diagram of a perception scenario applicable to an embodiment of the present application. Figure 2 provides a scenario in which a terminal device applicable to an embodiment of the present application sends a perception signal and a network device receives an echo signal. It should be noted that Figure 2 takes a vehicle as an example of the perception target, but the embodiment of the present application is not limited to this. For example, the perception target can also be a pedestrian, a low-altitude drone, or other moving or stationary objects. Figure 2 takes a smartphone as an example of the terminal device, but the embodiment of the present application is not limited to this. Figure 2 takes a network device receiving an echo signal as an example, but the embodiment of the present application is not limited to this. The network device can also be another terminal device.

[0091] The following is an introduction to the technical terms involved in the embodiments of this application.

[0092] (1) Carrier Aggregation (CA)

[0093] CA can aggregate multiple carriers together to serve a single terminal device. The terminal device can also send and receive data on multiple carriers simultaneously. One carrier is called the primary component carrier (PCC), and the cell corresponding to the PCC is called the primary cell (PCell). The remaining carriers are called secondary component carriers (SCCs), and the cells corresponding to the SCCs are called secondary cells (SCells). Based on whether the aggregated carriers (CCs) belong to the same frequency band and are contiguous in the frequency domain, CA can be divided into the following types:

[0094] i. Intra-band contiguous carrier aggregation: CCs belong to the same frequency band and are contiguous in the frequency domain

[0095] ii. Intra-band non-contiguous carrier aggregation: CCs belong to the same frequency band but are not contiguous in the frequency domain.

[0096] iii. Inter-band carrier aggregation: CCs belong to different frequency bands

[0097] Taking carrier aggregation of 2 CCs as an example, the above aggregation is respectively shown in FIG3 .

[0098] It should be noted that the primary cell and the secondary cell can be managed by the same network device (referred to as intra-site CA), or they can be managed by different network devices (referred to as inter-site CA). In the case of inter-site CA, the network devices that manage the primary and secondary cells are network devices of the same RAT. Figure 4 shows a schematic diagram of intra-site CA and inter-site CA, where (1) in Figure 4 is intra-site CA and (2) in Figure 4 is inter-site CA.

[0099] (2) Dual Connectivity (DC)

[0100] Terminal devices support simultaneous access to two network devices, one of which is the primary network device and the other is the secondary network device. As wireless communication systems evolve, operators will deploy both 5G NR and LTE systems. Terminal devices also support simultaneous access to both LTE and NR network devices. Because LTE is also known as Evolved Universal Terrestrial Radio Access (E-UTRA), this access method is called Evolved Universal Terrestrial Radio Access with New Radio Dual Connectivity (EN-DC). In EN-DC mode, the LTE network device is the primary network device and the NR network device is the secondary network device. Of course, as the system evolves, support for NR E-UTRA Dual Connectivity (NE-DC) will also be possible in the future, with the NR network device being the primary network device and the LTE network device being the secondary network device.

[0101] In the future development and evolution of wireless communication systems, there will be next-generation 5G systems. Terminal devices can also support simultaneous access to 5G systems and next-generation 5G systems. Terminal devices can also support simultaneous access to three or more systems. The above RAT technology is one of LTE, 5G NR, and 5G next-generation technology (5.5G or 6G). Different RAT technologies can have the same or different carrier frequencies, which is not required here.

[0102] In the DC scenario, a terminal device uses a corresponding radio access technology (RAT) to access a corresponding communication system. The terminal device can use different RATs on at least two carriers to communicate with network devices of different systems.

[0103] It should be noted that, in a mode where a terminal device simultaneously accesses a network device of a first RAT and a network device of a second RAT, the network device of the first RAT and the network device of the second RAT can be deployed on the same site, as shown in Figure 5 below, or on different sites, as shown in Figure 6 below. When deployed on the same site, the network device of the first RAT and the network device of the second RAT can share the same set of hardware devices, or use different hardware devices.

[0104] (3) Coherent detection of sensory signals

[0105] The method provided in this application is applicable to at least the following scenarios. In the following scenarios, the terminal device supports sending perception signals on multiple carriers. With the evolution of communication technology, other scenarios may also exist, and this application does not limit them.

[0106] Scenario 1: Carrier-attached access (CA) scenario under the same RAT. The terminal device sends perception signals on the carriers of the primary cell and the secondary cell respectively. The network devices of the primary cell and the secondary cell confirm the perception measurement value based on the received perception signals.

[0107] Scenario 2: DC scenario: The terminal device sends a perception signal on the carriers of the first RAT and the second RAT respectively, and the network devices of the first RAT and the second RAT confirm the perception measurement value based on the received perception signal.

[0108] Scenario 3: In the DC scenario, CA scenarios under each RAT are supported simultaneously.

[0109] Based on the perception signals transmitted on multiple carriers, the receiving end of the perception signals can perform joint processing to improve the accuracy of the perception measurement results. This joint processing can be referred to as correlation processing, correlation detection, coherent processing, coherent detection, coherent fusion detection, fusion detection, etc. This application does not limit this, and the various names are interchangeable.

[0110] As a possible coherent detection, for example, assume that the terminal device and the network device operate in a continuous CA scenario within the frequency band of the station and send signals on two carriers. From the perspective of baseband signal processing, the perception signal sent on the first carrier is carried on the k1th subcarrier and the lth symbol, and the symbol is denoted as c k1,l , the symbol of the perception signal sent on the second carrier on the k2th subcarrier and the lth symbol is recorded as c k2,l , then the echo signal of the lth symbol received by the base station can be expressed as:

[0111] Where a(*) and b(*) represent the fading experienced during the signal propagation process, T1 and T2 represent the period of sensing signal transmission, and f DRepresents the Doppler frequency shift caused by movement, τ is the time delay experienced by the signal after being reflected by the target, and Δf1, Δf2 represent the subcarrier spacing of the two signals. In a simple case, that is, the subcarrier spacing of the two signals is consistent, and the sending period of the perception signal is also consistent. When the network side receiving end performs joint signal processing, it directly performs L-point discrete Fourier transform (DFT) and K-point inverse discrete Fourier transform (IDFT) on the received echo signal to obtain the distance velocity spectrum, where L is determined according to the number of time domain symbols of the two perception signals, for example, L is the total number of time domain symbols occupied by the two perception signals, and K is determined according to the overall frequency domain bandwidth of the two perception signals or the number of subcarriers included in the frequency domain bandwidth, for example, K is the sum of the number of subcarriers occupied by each of the two perception signals, or K is the number of subcarriers contained between the highest frequency subcarrier and the lowest frequency subcarrier among the subcarriers occupied by the two perception signals. It should be understood that the above coherent detection method is only an example, and there may be other coherent detection methods, which are not limited in this application.

[0112] Compared to processing the sensing signals on each carrier separately, the above coherent detection method can improve the accuracy of the sensing measurement results. This is because the coherent detection method expands the bandwidth of the sensing signal used to process the sensing results. The sensing resolution can be expressed as follows:

[0113] It can be seen that for the detection of perception measurement quantities, when the signal bandwidth is larger, the distance resolution is smaller, the perceived distance resolution ability is stronger, and the perception performance is better.

[0114] However, the receiver's coherent processing of sensing signals transmitted on different carriers places stringent requirements on the terminal device's signal transmission capabilities. Specifically, this capability requires that the signals on different carriers meet certain alignment requirements in the time and frequency domains. If the receiver jointly processes sensing signals that do not meet these requirements, the accuracy of the sensing results may be affected.

[0115] The following further describes a communication method and a communication device provided in an embodiment of the present application:

[0116] At present, in scenarios such as dual connectivity (DC) or carrier aggregation (CA), terminal devices can send perception signals on multiple carriers, but the perception performance based on the perception signals sent on multiple carriers needs to be improved. When the terminal device sends perception signals on multiple carriers, the receiving end of the perception signals can process the perception signals on each carrier separately, or can jointly process the perception signals on multiple carriers. The joint processing method can achieve higher perception performance, but it also puts forward requirements on the ability of the terminal device to send signals on multiple carriers. If the receiving end jointly processes the perception signals that do not meet this requirement, it may affect the accuracy of the perception results.

[0117] In view of this, an embodiment of the present application provides a communication method and device that are conducive to improving perception performance. The terminal device sends first information to the network device, indicating the terminal device's ability to send signals on different carriers, so that the network device can select a suitable signal processing algorithm (for example, jointly processing perception signals sent on multiple carriers), thereby improving perception performance. Among them, the method and device described in this application are based on the same technical concept. Since the principles of solving the problem by the method and device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0118] Reference is made to Figure 7, which is a flow chart of a communication method 100. In the following description, the method is applied to the network architecture diagram shown in Figure 1 as an example. In the following description, the method is performed by a first communication device and a second communication device. The first communication device may be, for example, a terminal device, or a component in the terminal device (such as a chip or a chip system, etc.), or a component that implements part of the functions of the terminal device. The second communication device may be, for example, a network device, or a component in the network device (such as a chip or a chip system, etc.), or a component that implements part of the functions of the network device (such as a CU, DU or RU, etc.), without limitation. For ease of introduction, in the following description, the method is performed by a network device and a terminal device as an example. Because the embodiment of the present application is based on the network architecture shown in Figure 1 as an example, the network device described below is, for example, an access network device in the network architecture shown in Figure 1, and the terminal device described below may be a terminal device in the network architecture shown in Figure 1.

[0119] S101: The terminal device sends first information, and correspondingly, the network device receives the first information.

[0120] The first information may be carried in radio resource control (RRC) signaling, or in uplink control information (UCI), or in a media access control element (MAC CE).

[0121] The first information can be implemented in the following ways 1 to 3, which will be described below respectively.

[0122] Method 1: The first information indicates M carriers, and the signals sent on the M carriers meet the time domain error condition and / or the frequency domain error condition, or it can be expressed as, the M carriers meet the time domain error condition and / or the frequency domain error condition, and M is an integer greater than or equal to 2.

[0123] The M carriers indicated by the first information are supported by the terminal device, and the signals sent by the terminal device on the M carriers meet the time domain error condition and / or the frequency domain error condition.

[0124] In order to facilitate the description of the time domain error condition and / or frequency domain error condition, the M signals mentioned below are M signals respectively sent on the above-mentioned M carriers unless otherwise specified, and will not be described in detail later. The transmission here is to describe the signal transmission capability of the terminal device. It is a hypothetical transmission. The terminal device may not send the M signals in the actual system, and the network device may not receive the M signals in the actual system. The M signals can also be assumed to be signals sent with full bandwidth. In the following, any two signals among the M signals can be all combinations of any two signals among the M signals. Any two signals among the M carriers can be all combinations of any two carriers among the M carriers.

[0125] In one possible implementation, the signals sent on the M carriers satisfy a time domain error condition, or the M carriers satisfy the time domain error condition, which can be expressed as a time interval between any two signals in the M signals being less than or equal to a first threshold, or as a maximum time interval between any two signals in the M signals being equal to the first threshold.

[0126] The time interval between two signals can be the time interval between the signal sending moments, or the time interval determined by other time reference points, and this application does not impose any restrictions.

[0127] Taking the sending time of the signal as an example, the time interval between two signals can be expressed as the absolute value of the difference between the sending times of the two signals. As shown in (1) in Figure 8, this is a schematic diagram of the time domain error condition in the case of two carriers provided by this application. The dark part is the signal sent on CC1 and CC2. The sending time of the signal sent on CC1 is T1, and the sending time of the signal sent on CC2 is T2. The time interval between the two signals can be expressed as T2-T1, or the absolute value of T1-T2. The above-mentioned time domain error condition can be expressed as T2-T1 is less than or equal to the first threshold, or the absolute value of T1-T2 is less than or equal to the first threshold. It should be understood that the signal sent on CC1 or CC2 can be sent periodically, and the sending period of different signals can be different. In the case of periodic transmission, the time interval between the two signals is calculated using the corresponding signal in the time domain.

[0128] In one possible implementation, the signals sent on the M carriers satisfy the time domain error condition, or the M carriers satisfy the time domain error condition, and the time interval between the time domain position of each signal in the M signals and the first time domain position is less than or equal to the first threshold, or it can be expressed as the maximum time interval between the time domain position of each signal in the M signals and the first time domain position is equal to the first threshold.

[0129] The first time domain position is, for example, the time domain position at which the relevant signal is scheduled to be sent, or the time domain position at which it should be sent. The time interval between the time domain position of the signal and the first time domain position may be the time interval between signal transmission times, or the time interval determined by other time reference points, and this application does not impose any limitation thereto.

[0130] Taking the sending time of the signal as an example, the time interval between the time domain position of the signal and the first time domain position can be expressed as the absolute value of the difference between the sending time of the signal and the sending time corresponding to the first time domain position. As shown in (2) of Figure 8, this is a schematic diagram of the time domain error condition in the case of two carriers provided by this application. The dark part is the signal sent on CC1 and CC2, and the first time domain position at which these two signals are scheduled to be sent or should be sent. The sending time of the signal sent on CC1 is T1, the sending time of the signal sent on CC2 is T2, the sending time corresponding to the first time domain position is T0, and the time interval between the time domain positions of the two signals and the first time domain position can be expressed as the absolute value of T2-T0, T0-T1, T0-T2 or the absolute value of T1-T0. The above-mentioned time domain error condition can be expressed as the absolute value of T2-T0, T0-T1, T0-T2 or the absolute value of T1-T0 being less than or equal to the first threshold. It should be understood that the signal sent on CC1 or CC2 can be sent periodically, and the sending period of different signals can be different. In the case of periodic transmission, the time interval between two signals is calculated using the corresponding signals in the time domain.

[0131] In a possible implementation, the signals sent on the M carriers satisfy a time domain error condition, or the M carriers satisfy the time domain error condition, and the time interval between the timings of any two carriers among the M carriers may be less than or equal to a first threshold, or the maximum time interval between the timings of any two carriers among the M carriers may be equal to the first threshold.

[0132] The timing of a carrier is the timing of the time units divided on the carrier. The timing can be represented by the boundaries of frames, subframes, time slots, symbols, etc., and this application does not impose any restrictions.

[0133] Taking the symbol boundary as an example, the time interval between the timing of the two carriers can be expressed as the absolute value of the difference between the symbol boundary of CC1 and the symbol boundary of CC2. As shown in (3) of Figure 8, this is a schematic diagram of the time domain error condition for a two-carrier case provided by the present application. A grid of CC1 or CC2 is a symbol on CC1 or CC2. The symbol boundary of CC1 is T1, and the symbol boundary of CC2 is T2. The time interval between the timing of the two carriers can be expressed as T2-T1, or the absolute value of T1-T2. The above-mentioned time domain error condition can be expressed as T2-T1 being less than or equal to the first threshold, or the absolute value of T1-T2 being less than or equal to the first threshold.

[0134] Furthermore, the first threshold may be a nanosecond-level time domain error value, and the first threshold is less than 65 ns.

[0135] In one example, the first threshold is 10ns or 50ns. For example, the time domain error of different carriers is recorded as ΔT. When the network equipment performs joint processing to obtain the distance spectrum, it can be considered that the actual position of the target and the difference from the target are There will be two peak points detected at . Where c is the speed of light. If these two peak points can be identified separately, that is, greater than the distance resolution of the system, it will cause false alarms. In summary, the setting of the time error threshold can refer to the distance resolution of the system, that is, to avoid false alarms, so that

[0136] Right now

[0137] According to the above formula, when the bandwidth is 100 MHz, the time domain error threshold is 10 ns. Alternatively, when the bandwidth is 200 MHz, the time domain error threshold is 5 ns. Alternatively, when the bandwidth is 400 MHz, the time domain error threshold is 2.5 ns. It should be understood that different time domain error thresholds can be determined based on other threshold determination criteria. The above is merely an example and is not intended to be limiting in this application. It should be understood that in this application, ns stands for nanoseconds, MHz stands for megahertz, kHz stands for kilohertz, and Hz stands for hertz. This will not be further elaborated herein.

[0138] In one possible implementation, the signal sent on the M carriers satisfies the frequency domain error condition, or the M carriers satisfy the frequency domain error condition, which can be expressed as the absolute value of the difference between the center frequencies of any two carriers in the M carriers and the first frequency interval is less than or equal to the second threshold, or expressed as the maximum value of the absolute value of the difference between the center frequencies of any two carriers in the M carriers and the first frequency interval is equal to the second threshold, or expressed as the value of the frequency interval between the center frequencies of any two carriers in the M carriers modulo the first subcarrier interval is less than or equal to the second threshold, or expressed as the maximum value of the frequency interval between the center frequencies of any two carriers in the M carriers modulo the first subcarrier interval is equal to the second threshold.

[0139] The first frequency interval can be an integer multiple of the first subcarrier interval, or expressed as Kf, where K is a positive integer and f is the first subcarrier interval. K represents a multiple relationship, and the value of K is related to the frequency interval between the center frequencies of the two carriers. Specifically, K is a multiple value that minimizes the absolute value of the difference between the frequency interval between the center frequencies of the two carriers and the first frequency interval. The first subcarrier interval can be the minimum subcarrier interval among the subcarrier intervals configured / supported by the system, or any one of the subcarrier intervals configured / supported by the system, or a subcarrier interval of any size specified by the protocol, and this application does not impose any restrictions. For example, f is 15kHz, 30kHz or 60kHz. Alternatively, f is 5kHz.

[0140] In another possible implementation, the first frequency interval may be a frequency interval between center frequencies at which two carriers are scheduled or configured, or a frequency interval between center frequencies at which the two carriers should be located, which is not limited in this application.

[0141] The absolute value of the above difference can also be replaced by an interval, or replaced by a difference. The frequency interval between the center frequencies of the two carriers can also be replaced by the frequency interval between the lowest frequencies of the bandwidths of the two carriers, or replaced by the frequency interval between the highest frequencies of the bandwidths of the two carriers, or replaced by the frequency interval between the starting frequencies of the bandwidths of the two carriers. The above center frequency, lowest frequency, highest frequency or starting frequency can be a frequency point, or the center frequency point of the subcarrier where the frequency is located.

[0142] Taking the center frequency of the carrier as an example, the absolute value of the difference between the frequency interval between the center frequencies of the two carriers and the first frequency interval can be expressed as the absolute value of the difference between the frequency interval between the center frequency of CC1 and the center frequency of CC2 and Kf, where K is a positive integer and f is the first subcarrier interval. As shown in (1) in Figure 9, this is a schematic diagram of the frequency domain error condition for a two-carrier case provided by the present application. The width occupied by a grid in frequency is the bandwidth of CC1 or CC2, f1 is the center frequency of CC1, and f2 is the center frequency of CC2. The frequency interval between the center frequencies of the two carriers can be expressed as f2-f1, or the absolute value of f1-f2. The above frequency domain error condition can be expressed as f2-f1-Kf is less than or equal to the second threshold, or the absolute value of f2-f1-Kf is less than or equal to the second threshold. Alternatively, the above frequency domain error condition can also be expressed as (f2-f1)modf is less than or equal to the second threshold, or (the absolute value of f2-f1)modf is less than or equal to the second threshold.

[0143] It should be understood that the result of A mod B in this application is the remainder after A is divided by B, that is, A is the dividend and B is the divisor.

[0144] In one possible implementation, the signals sent on the M carriers satisfy the frequency domain error condition, or the M carriers satisfy the frequency domain error condition, and it can also be that the absolute value of the difference between the frequency interval between any two signals in the M signals and the first frequency interval is less than or equal to the second threshold, or it can be expressed as the maximum value of the absolute value of the difference between the frequency interval between any two signals in the M signals and the first frequency interval is equal to the second threshold, or it can be expressed as the value of the frequency interval between any two signals in the M signals modulo the first subcarrier interval is less than or equal to the second threshold, or it can be expressed as the maximum value of the frequency interval between any two signals in the M signals modulo the first subcarrier interval is equal to the second threshold.

[0145] The first frequency interval can be an integer multiple of the first subcarrier interval, or expressed as Kf, where K is a positive integer and f is the first subcarrier interval. K represents a multiple relationship, and the value of K is related to the frequency interval between the two signals. Specifically, K is a multiple value that minimizes the absolute value of the difference between the frequency interval between the two signals and the first frequency interval. The first subcarrier interval can be the minimum subcarrier interval among the subcarrier intervals configured / supported by the system, or any one of the subcarrier intervals configured / supported by the system, or a subcarrier interval of any size specified by the protocol, and this application does not impose any restrictions. For example, f is 15kHz, 30kHz or 60kHz. Alternatively, f is 5kHz.

[0146] In another possible implementation, the first frequency interval may be the frequency interval between the scheduled transmission frequencies of the two related signals, or the frequency interval between the frequencies that should be transmitted, which is not limited in this application. The frequency interval scheduled here is consistent with the definition of the frequency interval between the two signals mentioned above.

[0147] The absolute value of the above difference can also be replaced by an interval, or replaced by a difference. The frequency interval between the two signals can specifically be the frequency interval between the center frequencies of the starting subcarriers (or center subcarriers, subcarriers with the highest frequency, subcarriers with the lowest frequency, etc.) of the two signals, or can be the frequency interval between the center frequency of any subcarrier of one of the two signals and the center frequency of any subcarrier of the other of the two signals, or can be the frequency interval of all combinations between the center frequency of any subcarrier of one of the two signals and the center frequency of any subcarrier of the other of the two signals.

[0148] Taking the center frequency point of any subcarrier as an example, the absolute value of the difference between the frequency interval between the two signals and the first frequency interval can be expressed as the absolute value of the difference between the center frequency of any subcarrier of the CC1 signal and the center frequency of any subcarrier of the CC2 signal and Kf, where K is a positive integer and f is the first subcarrier interval. As shown in (2) in Figure 9, this is a schematic diagram of the frequency domain error condition for a two-carrier case provided by this application. The width occupied by a grid in frequency is the bandwidth of CC1 or CC2, the dark part is the signal sent on CC1 and CC2, f1 is the center frequency of a subcarrier of the signal on CC1, and f2 is the center frequency of a subcarrier of the signal on CC2. The frequency interval between the two signals can be expressed as f2-f1, or the absolute value of f1-f2. The above frequency domain error condition can be expressed as f2-f1-Kf is less than or equal to the second threshold, or the absolute value of f2-f1-Kf is less than or equal to the second threshold. Alternatively, the frequency domain error condition can also be expressed as (f2-f1) modf is less than or equal to the second threshold, or (the absolute value of f2-f1) modf is less than or equal to the second threshold. In one possible embodiment, all combinations of subcarriers in the signal on CC1 and subcarriers in the signal on CC2 need to meet the frequency domain error condition. In another possible embodiment, it is sufficient that the frequency domain error condition is met between a subcarrier in the signal on CC1 and a subcarrier in the signal on CC2.

[0149] In an embodiment of the present application, a subcarrier of a signal sent on a carrier can be replaced by a subcarrier of the carrier. That is, the above possible implementation method can be that the signal sent on the M carriers satisfies the frequency domain error condition, or the M carriers satisfy the frequency domain error condition, and can also be that the absolute value of the difference between the frequency interval between the subcarriers of any two carriers in the M carriers and the first frequency interval is less than or equal to the second threshold, or expressed as the maximum value of the absolute value of the difference between the frequency interval between the subcarriers of any two carriers in the M carriers and the first frequency interval is equal to the second threshold, or expressed as the value of the frequency interval between the subcarriers of any two carriers in the M carriers modulo the first subcarrier interval is less than or equal to the second threshold, or expressed as the maximum value of the frequency interval between the subcarriers of any two carriers in the M carriers modulo the first subcarrier interval is equal to the second threshold.

[0150] The first frequency interval can be an integer multiple of the first subcarrier interval, or expressed as Kf, where K is a positive integer and f is the first subcarrier interval. K represents a multiple relationship, and the value of K is related to the frequency interval between the subcarriers of the two carriers. Specifically, K is a multiple value that minimizes the absolute value of the difference between the frequency interval between the subcarriers of the two carriers and the first frequency interval. The first subcarrier interval can be the minimum subcarrier interval among the subcarrier intervals configured / supported by the system, or any one of the subcarrier intervals configured / supported by the system, or a subcarrier interval of any size specified by the protocol, and this application does not impose any restrictions. For example, f is 15kHz, 30kHz or 60kHz. Alternatively, f is 5kHz.

[0151] The absolute value of the above difference can also be replaced by an interval, or replaced by a difference. The frequency interval between the subcarriers of two carriers can specifically be the frequency interval between the center frequencies of the starting subcarriers (or center subcarriers, subcarriers with the highest frequency, subcarriers with the lowest frequency, etc.) of the two carriers, or can be the frequency interval between the center frequency of any subcarrier of one of the two carriers and the center frequency of any subcarrier of the other of the two carriers, or can be the frequency interval of all combinations between the center frequency of any subcarrier of one of the two carriers and the center frequency of any subcarrier of the other of the two carriers.

[0152] It should be understood that a frequency other than the center frequency of the subcarrier may also be used as a reference frequency to characterize the subcarrier frequency, and this application does not impose any limitation thereto.

[0153] Furthermore, the second threshold may be a frequency domain error value at the hundred-hertz level.

[0154] In one example, the second threshold is 100 Hz. For example, the frequency domain error of different carriers is recorded as Δf. When the network equipment performs joint processing to obtain the speed spectrum, it can be considered that the actual speed of the target and the deviation are At , two peaks are detected. Where λ is the signal wavelength, for example, the signal wavelength is the speed of light divided by the carrier frequency. If these two peak points can be identified separately, that is, it is greater than the speed resolution of the system, it will cause a false alarm. In summary, the setting of the frequency domain error threshold can refer to the speed resolution of the system, that is, to avoid false alarms, so that

[0155] Here, the velocity resolution is expressed as Where CPI stands for coherent processing time. The coherent processing time is the time period during which the perception signals undergo joint processing. Generally speaking, the coherent processing time is a time period much longer than the perception signal transmission period. In other words, during the coherent processing time, the transmitter can send multiple perception signals in the same beam direction, and the receiver receives the echo signals of the perception signals and jointly processes the echo signals of the perception signals within the coherent processing time to achieve ranging and speed measurement of the target. It should be understood that this time period can have other names, and this application does not limit it.

[0156] According to the above formula, when the coherent processing time is 10 ms, the frequency domain error condition is 100 Hz. Alternatively, when the coherent processing time is 20 ms, the frequency domain error condition is 50 Hz. Alternatively, when the coherent processing time is 50 ms, the frequency domain error condition is 20 Hz. Alternatively, when the coherent processing time is 100 ms, the frequency domain error condition is 10 Hz. It should be understood that different frequency domain error thresholds can also be determined according to other threshold determination criteria. The above is only an example and is not limited in this application.

[0157] It should be understood that to achieve better coherent detection, ideally, the sensing signals transmitted on multiple carriers are transmitted at the same time. However, due to hardware limitations or other non-ideal conditions, the actual transmission times of the sensing signals transmitted by the terminal device on different carriers may deviate. Therefore, by limiting the maximum value of this deviation, the coherent detection effect can be guaranteed as much as possible. The aforementioned first threshold value is the value that must be met for the time domain error condition. It can be a value defined by the protocol or a value configured by the network device through signaling, and this application does not impose any restrictions. This first threshold value reflects the conditions for coherent detection, or the joint processing requirement. Similarly, ideally, the subcarriers of the sensing signals transmitted on multiple carriers are located at frequencies within the same frequency interval. By limiting the maximum value of the deviation in non-ideal conditions, the coherent detection effect can be guaranteed as much as possible. The aforementioned second threshold value is the value that must be met for the frequency domain error condition. It can be a value defined by the protocol or a value configured by the network device through signaling, and this application does not impose any restrictions. This second threshold value reflects the conditions for coherent detection, or the joint processing requirement. Therefore, the time domain error condition and / or the frequency domain error condition meet the joint processing requirement or the coherent detection condition.

[0158] As shown in Figure 10, Figure 10 is a schematic diagram of ideal signal transmission in the case of two carriers provided by this application. A grid in Figure 10 occupies one symbol in the time domain and one subcarrier interval in the frequency domain. The center point of the grid in the frequency domain is the center frequency of the corresponding subcarrier. In Figure 10, the signals sent on the same time domain symbol are ideally sent at the same time. In the frequency domain, the subcarriers occupied by the signal sent on CC1 and the subcarriers occupied by the signal sent on CC2 are located at the frequency points corresponding to the frequency domain comb teeth with a uniform frequency interval. In this way, a better coherent detection effect can be obtained.

[0159] It should be understood that Figures 8 and 9 above use two carriers as an example. If M is greater than 2, for example, when M is 3, the M carriers satisfying the time domain error condition and / or the frequency domain error condition can be understood as the time domain error condition and / or the frequency domain error condition being satisfied between CC1 and CC2, CC1 and CC3, and CC2 and CC3 among the three carriers. Other cases are similar and will not be further described.

[0160] The first information mentioned above indicates M carriers. In one embodiment, the first information may include N sub-information, each of which corresponds to N carriers, where N is an integer greater than or equal to M, and the M carriers are part or all of the N carriers; the M sub-information corresponding to the M carriers in the N sub-information indicates a first state, and the NM sub-information other than the M sub-information in the N sub-information indicates a second state. The first state indicates that the carrier corresponding to the sub-information is a carrier among the M carriers, and the second state indicates that the carrier corresponding to the sub-information is not a carrier among the M carriers, and the M carriers meet the time domain error condition and / or the frequency domain error condition.

[0161] The value of N above is related to the number of carriers currently supported by the terminal device, such as the number of carriers in the carrier capability reported by the terminal device, or the number of carriers configured by the network device, or the number of carriers on which the signal is configured or scheduled for transmission, etc. This application does not impose any restrictions.

[0162] Exemplarily, the first information includes N bits, each corresponding to N carriers. One value of each bit can be used to indicate that the carrier meets the time domain error condition and / or the frequency domain error condition, and another value can be used to indicate that the carrier does not meet the time domain error condition and / or the frequency domain error condition. Taking N=3 as an example, the first information occupies 3 bits, with the first bit corresponding to CC1, the second bit corresponding to CC2, and the third bit corresponding to CC3. If the value of the first information is 111, carriers CC1 to CC3 meet the time domain error condition and / or the frequency domain error condition; if the value of the first information is 110, carriers CC1 and CC2 meet the time domain error condition and / or the frequency domain error condition; if the value of the first information is 101, carriers CC1 and CC3 meet the time domain error condition and / or the frequency domain error condition; if the value of the first information is 011, carriers CC2 and CC3 meet the time domain error condition and / or the frequency domain error condition, and so on, as shown in Table 1. It should be understood that the data in Table 1 is merely an example and does not limit the specific form of the first information.

[0163] Table 1

[0164] Method 2: The first information indicates a time domain error value and / or a frequency domain error value, and the signal sent on M carriers satisfies the time domain error value and / or the frequency domain error value, or it can be expressed as, M carriers satisfy the time domain error value and / or the frequency domain error value, and M is an integer greater than or equal to 2.

[0165] The time domain error value and / or frequency domain error value indicated by the first information is supported by the terminal device, and the signal sent by the terminal device on the M carriers meets the time domain error value and / or frequency domain error value.

[0166] In approach 2, the first information does not indicate whether the time domain error condition and / or frequency domain error condition are met or not based on the acquired coherent detection requirements, but instead indicates the time domain error value and / or frequency domain error value that the terminal device itself can meet. Based on this indication, the network device can determine whether the terminal device meets the coherent detection requirements, thereby selecting an appropriate perception signal processing algorithm to improve perception performance. The judgment and selection of the network device can be implemented in various ways, and this application does not impose any restrictions.

[0167] The definition of the above-mentioned time domain error value can refer to the above-mentioned first threshold value, and the definition of the above-mentioned frequency domain error value can refer to the above-mentioned second threshold value. The terminal device reports the value of the first threshold value and / or the second threshold value that it can reach as the time domain error value and / or the frequency domain error value through the first information. In method 2, satisfying the time domain error value and / or the frequency domain error value can be understood as satisfying the time domain error condition when the first threshold value takes the time domain error value and / or satisfying the frequency domain error condition when the second threshold value takes the frequency domain error value.

[0168] The first information mentioned above indicates a time domain error value and / or a frequency domain error value. In one embodiment, the first information includes the time domain error value and / or the frequency domain error value. Furthermore, the first information also includes indication information indicating M carriers. The indication information indicating M carriers can refer to the indication method of method 1 and is not further described.

[0169] Method 3: The first information indicates whether the signal sent on M carriers meets the time domain error condition and / or the frequency domain error condition, or expressed as follows: the first information indicates whether the M carriers meet the time domain error condition and / or the frequency domain error condition, where M is an integer greater than or equal to 2.

[0170] The first information indicates whether the signal sent by the terminal device on the M carriers meets the time domain error condition and / or the frequency domain error condition.

[0171] For the description of the time domain error condition and / or the frequency domain error condition, please refer to Method 1 and will not be repeated here.

[0172] In one embodiment, the first information may indicate a third state or a fourth state, the third state indicating that the signal transmitted on the M carriers satisfies the time domain error condition and / or the frequency domain error condition, and the fourth state indicating that the signal transmitted on the M carriers does not satisfy the time domain error condition and / or the frequency domain error condition. Exemplarily, the first information is 1 bit, and when the bit is 1, it is the third state, and when the bit is 2, it is the fourth state. Furthermore, the first information also includes indication information indicating the M carriers. The indication information indicating the M carriers can refer to the indication method of method 1 and will not be repeated. In another exemplary embodiment, the first information includes N sub-information, such as the indication method shown in Table 1 above. When all the N sub-information indicate the second state, the first information is in the fourth state; when at least one of the N sub-information indicates the first state, the first information is in the third state.

[0173] S102: The terminal device sends a signal, and the network device receives the signal or an echo signal of the signal in response, wherein the signal is used for sensing.

[0174] It should be understood that the signal transmitted by the terminal device is the actual signal transmitted. The signal received by the network device or the echo signal of the signal is the signal or echo signal actually received by the network device. The signal may be a signal transmitted on each of the M carriers, or a signal transmitted on a portion of the M carriers. The signal may also include a signal transmitted on a carrier other than the M carriers, and this application does not impose any restrictions.

[0175] Optionally, in the signal, the signal sent on some or all of the M carriers satisfies the above-mentioned time domain error condition and / or frequency domain error condition, or satisfies the above-mentioned time domain error value and / or frequency domain error value.

[0176] Optionally, the network device performs perception based on the received signal or the echo signal of the signal.

[0177] Optionally, the above-mentioned signal is a perception signal, a sounding reference signal, a demodulation reference signal, or a physical uplink shared channel (PUSCH).

[0178] Optionally, at least two of the above signals use different radio access technologies. Different radio access technologies include long term evolution (LTE), 5G new radio (NR), sixth generation (6G) radio access technology, or future evolved radio access technology, which is not limited in this application.

[0179] Optionally, the network device that receives the signal or the echo signal of the signal is the same network device.

[0180] Using the above method, the terminal device can report through the first information, so that the network device can select an appropriate signal processing algorithm based on the first information, thereby improving the performance of perception. For example, when the first information indicates M carriers, the network device can jointly process the perception signals sent on the M carriers. For another example, when the first information indicates a time domain error value and / or a frequency domain error value, the network device can determine whether to jointly process the perception signals sent on the M carriers based on whether the time domain error value and / or the frequency domain error value meet the joint processing requirements.

[0181] In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of the interaction between the terminal device and the network device. The method applied to the terminal device may only include the steps performed by the above-mentioned terminal device, and the steps performed by the terminal device may be implemented by different functional entities constituting the terminal device; the method applied to the network device may only include the steps performed by the above-mentioned network device, and the steps performed by the network device may be implemented by different functional entities constituting the network device. The network device or terminal device may include a hardware structure and / or a software module to implement the above-mentioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0182] The following describes the communication device used to implement the above method in the embodiment of the present application with reference to the accompanying drawings. Therefore, the above contents can be used in subsequent embodiments, and repeated contents will not be repeated.

[0183] Fig. 11 exemplarily shows a schematic structural diagram of a communication device 800. The communication device 800 can implement the functions or steps implemented by the terminal device or network device in the above-mentioned various method embodiments.

[0184] Exemplarily, the communication apparatus 800 may be a network device or a component in a network device (such as a DU, etc.), or a terminal device or a component in a terminal device.

[0185] In one embodiment, the communication device 800 may include a processing module 801 and a transceiver module 802. The processing module 801 may be used to perform data processing, such as executing the various method embodiments described above. The processing module 801 may also be referred to as a processing unit. The transceiver module 802 may be used to implement corresponding communication functions, such as executing the steps, information, or messages related to receiving or sending the various method embodiments described above. The transceiver module 802 may also be referred to as a communication interface, a communication module, or a transceiver unit.

[0186] It should be noted that the communication device 800 may include the processing module 801 but not the transceiver module 802. Alternatively, the communication device 800 may include the transceiver module 802 but not the processing module 801. The specific implementation depends on whether the above solution executed by the communication device 800 includes both processing and transceiver actions.

[0187] Optionally, the communication device 800 may further include a storage module, which is not shown in Figure 11. The storage module may be used to store instructions and / or data, and the processing module 801 may read the instructions and / or data in the storage module to enable the communication device 800 to implement the aforementioned method embodiment.

[0188] Optionally, the transceiver module 802 may include a sending module and a receiving module. The sending module is used to perform the sending operation in the above method embodiment. The receiving module is used to perform the receiving operation in the above method embodiment.

[0189] It should be noted that the communication device 800 may include a sending module but not a receiving module. Alternatively, the communication device 800 may include a receiving module but not a sending module. The specific implementation depends on whether the above solution executed by the communication device 800 includes a sending action and a receiving action.

[0190] Optionally, the communication device 800 is a chip system, the transceiver unit may be an input and output interface of a chip (eg, a baseband chip), and the processing unit may be a processor of the chip system.

[0191] In a first implementation manner, the communication device 800 may be a network device, a chip used in a network device, or other combined devices, components, etc. having the functions of the above-mentioned network device.

[0192] In one example, the communication device 800 is a network device or a component in a network device, and the communication device 800 can execute the following: the transceiver module 802 can be used to receive the first information; the transceiver module 802 can also be used to receive a signal or an echo signal of the signal, and the signal is used for perception.

[0193] Optionally, the processing module 801 may be configured to perform perception based on the signal or an echo signal of the signal.

[0194] In a second implementation manner, the communication device 800 may be a terminal device, a chip used in the terminal device, or other combined devices, components, etc. having the functions of the above-mentioned terminal device.

[0195] In one example, the communication device 800 is a terminal device or a component in a terminal device, and the communication device 800 can execute the following: the transceiver module 802 can be used to send first information; the transceiver module 802 can also be used to send a signal, which is used for perception.

[0196] It should be understood that a more detailed description of the corresponding processes executed by each module can be directly obtained by referring to the relevant description in the method embodiment shown in Figure 7. For the sake of brevity, it is not repeated here.

[0197] The processing module 801 in the above embodiment can be implemented by at least one processor or processor-related circuits. The transceiver module 802 can be implemented by a transceiver or transceiver-related circuits. The storage module can be implemented by at least one memory.

[0198] As shown in Figure 12, an embodiment of the present application provides a schematic structural diagram of a communication device 900. The communication device 900 may include a processor 920 for implementing or supporting the communication device 900 in implementing the functions of a terminal device or network device in any method embodiment of the present application. For details, please refer to the detailed description of the aforementioned method embodiment, which is not repeated here. For example, the processor 920 is used to read and execute program instructions through a communication interface so that the communication device 900 implements the corresponding method. The processor 920 may include one or more processors, without limitation.

[0199] It should be noted that the functional modules mentioned above can be implemented by hardware or by a combination of hardware and software, without limitation. Also, when the communication device 900 includes only the processor 920, the communication device 900 can be a chip or a chip system.

[0200] For example, the communication device 900 may be a chip system, wherein the chip system may be composed of a chip, or may include a chip and other discrete components, without limitation.

[0201] Optionally, the communication device 900 may further include a memory 930 for storing program instructions and / or data. The memory 930 is coupled to the processor 920. Coupling can be understood as an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, for information exchange between the devices, units, or modules. The processor 920 may operate in conjunction with the memory 930. The processor 920 and the memory 930 may be integrated or separately provided.

[0202] Furthermore, the processor 920 is configured to execute program instructions stored in the memory 930 so that the communication device 900 implements a corresponding method.

[0203] One or more memories in the memory 930 may be included in the processor, or the memory 930 may exist independently, such as an off-chip memory, connected to the processor 920 via a communication bus (represented by a thick line 940 in FIG. 12 ). The memory 930 and the processor 920 may also be integrated together.

[0204] Optionally, the communication device 900 further includes a communication interface 910 (indicated by a dotted line in FIG. 12 ) for communicating with other devices via a transmission medium, thereby enabling the device in the communication device 900 to communicate with the other device. For example, when the communication device is a first communication device, the other device may be a second communication device, etc. The processor 920 may use the communication interface 910 to send and receive data. For example, the processor 920 may be configured to control the communication interface 910 to receive and / or send signals.

[0205] The communication interface 910 may be a transceiver. In hardware implementation, the transceiver may be used to implement the functions of the transceiver module 802 . The transceiver is integrated into the communication device 900 to form the communication interface 910 .

[0206] It should be pointed out that the communication interface 910 can have a sending function and a receiving function, and can realize the reception and sending of signals; or it can have a sending function but not a receiving function, and is used to realize the sending of signals; or it can have a receiving function but not a sending function, and is used to realize the reception of signals.

[0207] It should be noted that the specific connection medium between the communication interface 910, processor 920, and memory 930 is not limited in the embodiments of the present application. In FIG12 , the memory 930, processor 920, and communication interface 910 are connected via a communication bus 940. The connection methods between other components are merely schematic and not limiting. The communication bus 940 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG12 shows only one thick line, but this does not mean that there is only one communication bus or only one type of communication bus.

[0208] In the embodiments of the present application, the processor 920 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The general-purpose processor may be a microprocessor or any conventional processor. The methods disclosed in conjunction with the embodiments of the present application may be executed by hardware in the processor, or by a combination of hardware and software in the processor.

[0209] In the embodiment of the present application, the memory 930 may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM). The memory may also be any other medium for carrying or storing program code in the form of instructions or data structures and accessible by a computer; or a circuit or any other device capable of performing a storage function, for storing program instructions and / or data.

[0210] Specifically, the communication device 900 can be a network device or a component in a network device (such as a CU, DU, etc.), or a terminal device or a component in a terminal device.

[0211] In a first possible implementation, the communication apparatus 900 may be a DU in a network device, used to implement the relevant methods corresponding to the network device in the above embodiments. For specific functions, please refer to the descriptions in the above embodiments.

[0212] Illustratively, the related methods corresponding to the network device in each of the above embodiments include: receiving first information; receiving a signal or an echo signal of the signal, wherein the signal is used for sensing. Optionally, the related methods further include: sensing based on the signal or the echo signal of the signal.

[0213] The reception here refers to, for example, reception from the RU.

[0214] In a second possible implementation, the communication device 900 may be a CU in a network device, used to implement the relevant methods corresponding to the network device in the above embodiments. For specific functions, please refer to the descriptions in the above embodiments.

[0215] Illustratively, the related methods corresponding to the network device in each of the above embodiments include: receiving first information; receiving a signal or an echo signal of the signal, wherein the signal is used for sensing. Optionally, the related methods further include: sensing based on the signal or the echo signal of the signal.

[0216] The reception here refers to, for example, reception from the DU.

[0217] In a third possible implementation, the communication apparatus 900 may be a terminal device, configured to implement the relevant methods corresponding to the terminal device in the above embodiments. For specific functions, please refer to the descriptions in the above embodiments.

[0218] Exemplarily, the relevant methods corresponding to the terminal device in each of the above embodiments include: sending first information; sending a signal, which is used for perception.

[0219] Based on the same concept, referring to FIG13 , an embodiment of the present application also provides another communication device 1000, including: an input / output interface 1010 and a logic circuit 1020; the input / output interface 1010 is used to receive code instructions and transmit them to the logic circuit 1020; the logic circuit 1020 is used to run code instructions to execute the method executed by the first communication device or the second communication device in any of the above embodiments.

[0220] Exemplarily, the communication apparatus 1000 may be a network device or a component in a network device (such as a DU, etc.), or a terminal device or a component in a terminal device.

[0221] In a first implementation, the communication device 1000 can be applied to a network device to execute the method executed by the aforementioned network device, for example, the method executed by the network device in the embodiment shown in FIG7 . Therefore, the technical effects that can be achieved can be referred to the aforementioned method embodiment and will not be described in detail here.

[0222] In a second implementation, the communication device 1000 can be applied to a terminal device to execute the method executed by the terminal device described above, for example, the method executed by the terminal device in the embodiment shown in FIG7 . Therefore, the technical effects that can be achieved can be referred to the above method embodiment and will not be described in detail here.

[0223] The present application also provides a communication system, which may include one or more of the following: a first communication device or a second communication device. The first communication device or the second communication device may refer to the descriptions in the aforementioned method embodiments and will not be described in detail.

[0224] A computer-readable storage medium is also provided in an embodiment of the present application, including program instructions, which, when executed on a computer, enables the computer to execute the methods or steps of the terminal device or network device in each of the above embodiments.

[0225] A computer program product is also provided in an embodiment of the present application, including program instructions, which, when executed on a computer, enable the computer to execute the methods or steps of the terminal device or network device in each of the above embodiments.

[0226] An embodiment of the present application provides a chip system, which includes a processor for implementing the functions of the terminal device or network device in the aforementioned method (for example, executing the corresponding method or step). The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0227] Optionally, the chip system further includes a memory for storing program instructions so that the above-mentioned processor reads and executes them to implement the corresponding method.

[0228] It should be understood that in the various embodiments of the present application, the size of the serial 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.

[0229] 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 beyond the scope of this application.

[0230] Those skilled in the art will clearly understand that, for the convenience and brevity 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.

[0231] 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 merely schematic. For example, the division of the units is merely 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. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0232] The units described as separate components may or may not be physically separate, and the components shown 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0233] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0234] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the part that essentially contributes to the technical solution of the present application or the part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0235] The above description is merely a specific embodiment of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in the embodiments of the present application, and such changes or substitutions should be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that, The method includes: Sending first information, where the first information indicates M carriers, and the signals transmitted on the M carriers satisfy a time-domain error condition and / or a frequency-domain error condition, and M is an integer greater than or equal to 2; Sending the signals, where the signals are for sensing.

2. The method according to claim 1, wherein The time-domain error condition is: The time interval between any two of the M signals is less than or equal to a first threshold; or, The time interval between the time-domain position of each of the M signals and a predefined time-domain position is less than or equal to the first threshold; The M signals are M signals respectively transmitted on the M carriers.

3. The method according to claim 2, wherein: The first threshold is less than 65 nanoseconds.

4. The method according to any one of claims 1 to 3, characterized in that The frequency-domain error condition is: The absolute value of the difference between the frequency interval between the center frequencies of any two of the M carriers and a first frequency interval is less than or equal to a second threshold; or, The value of the frequency interval between the center frequencies of any two of the M carriers modulo a first subcarrier interval is less than or equal to the second threshold; Wherein, the first frequency interval is an integer multiple of the first subcarrier interval, and the first subcarrier interval is a subcarrier interval of any size.

5. The method according to claim 4, wherein: The second threshold is 100 Hertz.

6. The method according to any one of claims 1-5, wherein: The time-domain error condition and / or the frequency-domain error condition satisfy the conditions for coherent detection.

7. The method according to any one of claims 1-6, characterized in that, It includes: The first information includes N sub-information, the N sub-information respectively correspond to N carriers, N is an integer greater than or equal to M, and the M carriers are part or all of the N carriers; The M sub-information corresponding to the M carriers among the N sub-information indicates a first state, and the N-M sub-information other than the M sub-information among the N sub-information indicates a second state.

8. The method according to any one of claims 1-7, wherein: The M carriers indicated by the first information are supported by a terminal device, and the signals transmitted by the terminal device on the M carriers satisfy a time-domain error condition and / or a frequency-domain error condition.

9. The method according to any one of claims 1 to 8, characterized in that, The signals are sensing signals, sounding reference signals, demodulation reference signals, or physical uplink shared channel PUSCH.

10. The method according to any one of claims 1-9, characterized in that, At least two of the signals respectively adopt different radio access technologies.

11. The method according to any one of claims 1 to 10, characterized in that, The first information is carried on radio resource control RRC signaling, or carried on uplink control information UCI, or carried on media access control element MAC CE.

12. A communication method, characterized in that, The method includes: Receiving first information, where the first information indicates M carriers, and the signals transmitted on the M carriers satisfy a time-domain error condition and / or a frequency-domain error condition, and M is an integer greater than or equal to 2; Receiving the signals, where the signals are for sensing.

13. The method according to claim 12, characterized in that, The method further includes: Performing sensing according to the signals.

14. The method according to claim 12 or 13, characterized in that, The time-domain error condition is: The time interval between any two of the M signals is less than or equal to a first threshold; or, The time interval between the time-domain position of each of the M signals and a predefined time-domain position is less than or equal to the first threshold; The M signals are M signals respectively transmitted on the M carriers.

15. The method according to claim 14, wherein the first threshold is less than 65 nanoseconds.

16. The method according to any one of claims 12 - 15, characterized in that, The frequency domain error condition is: the absolute value of the difference between the frequency interval between the center frequencies of any two of the M carriers and the first frequency interval is less than or equal to the second threshold; or the value of the frequency interval between the center frequencies of any two of the M carriers modulo the first subcarrier interval is less than or equal to the second threshold; wherein, the first frequency interval is an integer multiple of the first subcarrier interval, and the first subcarrier interval is a subcarrier interval of any size.

17. The method according to claim 16, wherein the second threshold is 100 Hz.

18. The method according to any one of claims 12-17, wherein the time domain error condition and / or the frequency domain error condition satisfy the conditions for coherent detection.

19. The method according to any one of claims 12-18, characterized in that, including: the first information includes N sub-informations, the N sub-informations respectively correspond to N carriers, N is an integer greater than or equal to M, and the M carriers are part or all of the N carriers; the M sub-informations corresponding to the M carriers in the N sub-informations indicate a first state, and the N-M sub-informations other than the M sub-informations in the N sub-informations indicate a second state.

20. The method according to any one of claims 12-19, wherein the M carriers indicated by the first information are supported by the terminal device, and the signals transmitted by the terminal device on the M carriers satisfy the time domain error condition and / or the frequency domain error condition.

21. The method according to any one of claims 12 - 20, characterized in that, The signal is a sensing signal, a sounding reference signal, a demodulation reference signal, or a physical uplink shared channel PUSCH.

22. The method according to any one of claims 12 - 21, characterized in that, At least two of the signals respectively adopt different radio access technologies.

23. The method according to any one of claims 12-22, characterized in that, The first information is carried on radio resource control RRC signaling, or carried on uplink control information UCI, or carried on media access control element MAC CE.

24. A communication device, characterized in that, including a module for executing the method according to any one of claims 1 to 11.

25. A communication device, characterized in that, including a module for executing the method according to any one of claims 12 to 23.

26. A communication device, characterized in that, including at least one processor, where the at least one processor is configured to execute the method according to any one of claims 1 to 11, or the at least one processor is configured to execute the method according to any one of claims 12 to 23.

27. A communication system, characterized in that, including a first communication device and / or a second communication device, wherein the first communication device is configured to execute the method according to any one of claims 1 to 11, and the second communication device is configured to execute the method according to any one of claims 12 to 23.

28. A computer-readable storage medium, characterized in that, storing a computer program or instruction, where the computer program or instruction is used to implement the method according to any one of claims 1 to 11, or the computer program or instruction is used to implement the method according to any one of claims 12 to 23.

29. A computer program product, characterized in that, The computer program product includes a computer program which, when running on a computer, causes the computer to execute the method according to any one of claims 1 to 11, or causes the computer to execute the method according to any one of claims 12 to 23.

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