Communication method and related apparatus

Abstract

The present application provides a communication method and a related apparatus, which can be applied to the technical field of communications. In the technical solution provided in the present application, a first communication device may first determine a first bandwidth and then send a first signal, wherein the first bandwidth may be greater than the carrier bandwidth of the first communication device, the bandwidth of the first signal is the first bandwidth, and the first signal is used for sensing. Compared with the prior art, the bandwidth of the first signal in the present application is greater than the bandwidth of a reference signal, thus achieving stronger sensing resolution capability.

Description

Communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 28, 2023, with application number 202311854671.X and application name “Communication Methods and Related Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0003] In existing communication systems, while communication equipment is communicating, it can also sense some objects that do not have communication capabilities.

[0004] Currently, communication devices can sense objects using reference signals. For example, after a network device sends a downlink reference signal to a terminal device, it can receive an echo signal formed after the downlink reference signal is reflected by an object, and then obtain a sensing result based on the echo signal.

[0005] However, based on this method, there are often situations where objects are actually there but cannot be perceived, and the perception resolution is poor. Summary of the Invention

[0006] The present application provides a communication method and related devices for solving the problem of poor perception resolution when perceiving an object based on a reference signal in the prior art.

[0007] In a first aspect, the present application provides a communication method, which is applied to a first communication device, and the method includes: determining a first bandwidth, which is greater than the carrier bandwidth of the first communication device; sending a first signal, the bandwidth of the first signal is the first bandwidth, and the first signal is used for perception.

[0008] In the method, the first communication device may be a network device. The carrier bandwidth of the first communication device may be a maximum signal bandwidth supported by a current carrier of the first communication device. The current carrier of the first communication device may be a carrier supported by or used by a current serving cell of the first communication device.

[0009] Optionally, the carrier bandwidth here may also be referred to as cell bandwidth, transmission bandwidth, channel bandwidth, etc.

[0010] In this method, the bandwidth of the first signal used for perception is greater than the carrier bandwidth of the first communication device, and the bandwidth of the first signal is greater than the bandwidth of the reference signal used for perception in the prior art. Because a larger bandwidth of the perception signal leads to a higher perception resolution and a stronger perception and resolution capability, the present application can improve perception and resolution capability.

[0011] In some possible implementations, the method further includes: sending first information to a second communication device, wherein the first information indicates at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period.

[0012] Optionally, the second communication device may be a terminal device or a network device. When the second communication device is a network device, the second communication device and the first communication device may be different network devices.

[0013] In this method, the first information may indicate configuration information of the first signal, so that the second communication device can receive the first signal based on the configuration information of the first signal and then perform perception based on the first signal. This can avoid the problem of the second communication device not knowing the configuration information of the first signal and thus treating the first signal as an interference signal, thereby avoiding the problem of being unable to obtain perception results.

[0014] In some possible implementations, the first information indicates the subcarrier spacing of the first signal, including: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal.

[0015] Optionally, when the second communication device is a terminal device, the terminal device can determine the subcarrier spacing of the first signal based on the first field, and then determine whether the subcarrier spacing of the first signal is consistent with the target subcarrier spacing. Only when it is determined that the subcarrier spacing of the first signal is consistent with the target subcarrier spacing, the terminal device receives the first signal.

[0016] The target subcarrier spacing may be the subcarrier spacing on the bandwidth portion BWP corresponding to the terminal device or the activated BWP, or the subcarrier spacing supported by the terminal device. The target subcarrier spacing may be pre-configured.

[0017] This can avoid the situation where the terminal device receives the first signal but is unable to process the first signal, which is conducive to improving resource utilization.

[0018] In some possible implementations, the first information indicating a cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates a cyclic prefix type of the first signal.

[0019] In this method, the terminal device can determine the cyclic prefix type of the first signal based on the second field, and then judge whether the cyclic prefix type of the first signal is consistent with the target cyclic prefix type. Only when it is determined that the cyclic prefix type of the first signal is consistent with the target cyclic prefix type, the first signal is received.

[0020] The target cyclic prefix type may be a cyclic prefix type on a BWP corresponding to the terminal device or an activated BWP, or a cyclic prefix type supported by the terminal device. The target cyclic prefix type may be pre-configured.

[0021] This can avoid the situation where the terminal device receives the first signal but is unable to process the first signal, which is conducive to improving resource utilization.

[0022] In some possible implementations, the first information indicates the frequency domain position of the first signal, including: the first information contains a third field, the third field indicates the frequency domain reference point position or the first offset of the first signal, and the first offset is the offset between the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device.

[0023] Optionally, the frequency domain reference point position can be represented by the absolute frequency of the reference resource block (RB). The absolute frequency of the reference RB can be calculated by the number of the global frequency grid. In this case, the third field can be used to indicate the number of the global frequency grid corresponding to the first signal.

[0024] In this method, the second communication device may determine the global frequency grid number of the first signal based on the third field, and then calculate the frequency domain reference point position of the first signal based on the global grid frequency number of the first signal.

[0025] Optionally, the frequency domain common reference point position of the first communication device and the second communication device may be pre-configured in the first communication device and the second communication device. The first communication device may first calculate the first offset and then send the first offset to the second communication device via the third field, so that the second communication device can determine the frequency domain reference point position of the first signal based on the first offset and the frequency domain common reference point position.

[0026] In this method, the second communication device can determine the frequency domain reference point position of the first signal based on the third field, and then determine the sequence in the first signal within the target frequency domain range based on the frequency domain reference point position of the first signal, and then perform perception based on the sequence in the first signal within the target frequency domain range to obtain a perception result.

[0027] The target frequency domain range may be a frequency domain range supported by the second communication device, and the target frequency domain range may be pre-configured.

[0028] In some possible implementations, the first information indicates the time domain position of the first signal, including: the first information contains a fourth field, the fourth field indicates the position of the first symbol in the first time slot, the first time slot is the time slot for sending the first signal, and the first symbol is the symbol for sending the first signal in the first time slot.

[0029] Optionally, in some embodiments, the first signal may be sent periodically, in which case the first symbol may be a symbol for starting to send the first signal in the first time slot.

[0030] In this method, the first time slot may be pre-configured, or the first time slot may be a default, i.e., the first communication device and the second communication device may determine that the first signal is sent in the first time slot. For example, the first time slot may be a starting time slot by default, and the starting time slot may be the first time slot used for sensing in a system frame or a radio frame, and the starting time slot may be pre-configured.

[0031] In this method, the second communication device can determine the start transmission time of the first signal based on the fourth field, then receive the first signal based on the start transmission time and perform sensing based on the first signal to obtain a sensing result. This avoids the situation where the second communication device cannot receive the first signal due to not knowing the transmission time of the first signal.

[0032] Optionally, in some other embodiments, the first signal may be sent non-periodically.

[0033] In this method, the second communication device can determine all symbols of the first signal sent based on the fourth field, and then determine the sending time of each first signal, and then receive each first signal based on the sending time of each first signal and perceive based on each first signal to obtain a perception result.

[0034] In some possible implementations, the first information further includes a fifth field, where the fifth field indicates a second offset, where the second offset is an offset between the first time slot and a starting time slot, where the starting time slot is the first time slot used for perception.

[0035] Optionally, in some embodiments, the first time slot may not be a default time slot. In this way, the second communication device may determine the transmission time of the first signal based on the fourth field and the fifth field, and then receive the first signal based on the transmission time and perform perception based on the first signal to obtain a perception result.

[0036] In some possible implementations, the first information indicating the signal period of the first signal includes: the first information includes a sixth field, and the sixth field indicates the sending period of the first signal.

[0037] Optionally, when the first signal is a periodically sent signal, the first information may include the sixth field.

[0038] In one example, if the first time slot is the default, the second communication device can determine all symbols that send the first signal based on the fourth field and the sixth field, and then determine the sending time of each first signal, and then receive each first signal based on the sending time of each first signal and perceive based on each first signal to obtain a perception result.

[0039] In another example, if the first time slot is not the default, the second communication device can determine all symbols that send the first signal based on the fourth field, the fifth field, and the sixth field, and then determine the sending time of each first signal, and then receive each first signal based on the sending time of each first signal and perceive based on each first signal to obtain a perception result.

[0040] In a second aspect, the present application provides a communication method, which is applied to a second communication device, and the method includes: receiving a first signal from a first communication device, the bandwidth of the first signal is a first bandwidth, the first bandwidth is greater than the carrier bandwidth of the first communication device, and the first signal is used for perception.

[0041] In some possible implementations, the receiving of the first signal from the first communication device includes: receiving first information from the first communication device, the first information indicating at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period; and receiving the first signal based on the first information.

[0042] In some possible implementations, the first information indicates the subcarrier spacing of the first signal, including: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal.

[0043] The receiving the first signal based on the first information includes: receiving the first signal when a subcarrier spacing of the first signal is consistent with a target subcarrier spacing.

[0044] Optionally, when the second communication device is a terminal device, the target subcarrier spacing may be the subcarrier spacing of the terminal device on the corresponding BWP or the subcarrier spacing of the terminal device on the activated BWP, or the subcarrier spacing that the terminal device can support. The target subcarrier spacing here may be pre-configured.

[0045] In some possible implementations, the first information indicating a cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates a cyclic prefix type of the first signal.

[0046] The receiving the first signal based on the first information includes: receiving the first signal when a cyclic prefix type of the first signal is consistent with a target cyclic prefix type.

[0047] Optionally, when the second communication device is a terminal device, the target cyclic prefix type may be a cyclic prefix type of the terminal device on a corresponding BWP or a cyclic prefix type of the terminal device on an activated BWP, or a cyclic prefix type that the terminal device can support. The target cyclic prefix type here may be configured in advance.

[0048] In some possible implementations, the first information indicates the frequency domain position of the first signal, including: the first information contains a third field, the third field indicates the frequency domain reference point position or the first offset of the first signal, and the first offset is the offset between the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device.

[0049] The method further includes determining a first sequence of the first signal based on a first field and the third field in the first information.

[0050] Optionally, the first signal sent by the first communication device may include multiple sequences, and the multiple sequences sent by the first communication device may be referred to as a sending sequence.

[0051] In the method, the first sequence may include at least one sequence, which is a sequence carried within a target frequency domain in a transmission sequence of the first signal.

[0052] The target frequency domain range may be pre-configured. Optionally, when the second communication device is a terminal device, the target frequency domain range may be the bandwidth on the BWP corresponding to the terminal device or the bandwidth on the currently activated BWP.

[0053] In this method, the first sequence may be included in the transmitted sequence. In other words, at least one sequence in the first sequence may be included in multiple sequences in the transmitted sequence, or at least one sequence in the received sequence may be a subset of multiple sequences in the transmitted sequence.

[0054] In some possible implementations, the first information indicates the time domain position of the first signal, including: the first information contains a fourth field, the fourth field indicates the position of the first symbol in the first time slot, the first time slot is the time slot for sending the first signal, and the first symbol is the symbol for sending the first signal in the first time slot.

[0055] In some possible implementations, the first information further includes a fifth field, where the fifth field indicates a second offset, where the second offset is an offset between the first time slot and a starting time slot, where the starting time slot is the first time slot used for perception.

[0056] In some possible implementations, the first information indicating the signal period of the first signal includes: the first information includes a sixth field, and the sixth field indicates the sending period of the first signal.

[0057] In a third aspect, the present application provides a communication device, comprising modules or units for implementing the method in the first aspect and any possible implementation of the first aspect. It should be understood that each module or unit can implement the corresponding function by executing a computer program.

[0058] As an example, the communication device may include a determining module and a sending module.

[0059] The determining module may be configured to determine a first bandwidth, where the first bandwidth is greater than a carrier bandwidth of the first communication device.

[0060] The sending module can be used to send a first signal, the bandwidth of the first signal is the first bandwidth, and the first signal is used for perception.

[0061] In some possible implementations, the sending module can also be used to send first information to the second communication device, where the first information indicates at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period.

[0062] In some possible implementations, the first information indicates the subcarrier spacing of the first signal, including: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal.

[0063] In some possible implementations, the first information indicating a cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates a cyclic prefix type of the first signal.

[0064] In some possible implementations, the first information indicates the frequency domain position of the first signal, including: the first information contains a third field, the third field indicates the frequency domain reference point position or the first offset of the first signal, and the first offset is the offset between the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device.

[0065] In some possible implementations, the first information indicates the time domain position of the first signal, including: the first information contains a fourth field, the fourth field indicates the position of the first symbol in the first time slot, the first time slot is the time slot for sending the first signal, and the first symbol is the symbol for sending the first signal in the first time slot.

[0066] In some possible implementations, the first information further includes a fifth field, where the fifth field indicates a second offset, where the second offset is an offset between the first time slot and a starting time slot, where the starting time slot is the first time slot used for perception.

[0067] In some possible implementations, the first information indicating the signal period of the first signal includes: the first information includes a sixth field, and the sixth field indicates the sending period of the first signal.

[0068] As an example, the communication apparatus may be applied to a first communication device, or may be applied to a chip in the first communication device.

[0069] In a fourth aspect, the present application provides a communication device, comprising modules or units for implementing the method in the second aspect and any possible implementation of the second aspect. It should be understood that each module or unit can implement the corresponding function by executing a computer program.

[0070] As an example, the communication device may include a receiving module.

[0071] The receiving module may be used to receive a first signal from a first communication device, the bandwidth of the first signal is a first bandwidth, the first bandwidth is greater than a carrier bandwidth of the first communication device, and the first signal is used for sensing.

[0072] In some possible implementations, the receiving module can also be used to receive first information from the first communication device, where the first information indicates at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period.

[0073] The receiving module may also be configured to receive the first signal based on the first information.

[0074] In some possible implementations, the first information indicates the subcarrier spacing of the first signal, including: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal.

[0075] The receiving module may also be configured to receive the first signal when a subcarrier spacing of the first signal is consistent with a target subcarrier spacing.

[0076] In some possible implementations, the first information indicating a cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates a cyclic prefix type of the first signal.

[0077] The receiving module may also be configured to receive the first signal when a cyclic prefix type of the first signal is consistent with a target cyclic prefix type.

[0078] In some possible implementations, the first information indicates the frequency domain position of the first signal, including: the first information contains a third field, the third field indicates the frequency domain reference point position or the first offset of the first signal, and the first offset is the offset between the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device.

[0079] Optionally, the communication device may further include a determination module. The determination module may be configured to determine the first sequence of the first signal based on the first field and the third field in the first information.

[0080] In some possible implementations, the first information indicates the time domain position of the first signal, including: the first information contains a fourth field, the fourth field indicates the position of the first symbol in the first time slot, the first time slot is the time slot for sending the first signal, and the first symbol is the symbol for sending the first signal in the first time slot.

[0081] In some possible implementations, the first information further includes a fifth field, where the fifth field indicates a second offset, where the second offset is an offset between the first time slot and a starting time slot, where the starting time slot is the first time slot used for perception.

[0082] In some possible implementations, the first information indicating the signal period of the first signal includes: the first information includes a sixth field, and the sixth field indicates the sending period of the first signal.

[0083] As an example, the communication apparatus may be applied to a second communication device, or may be applied to a chip in the second communication device.

[0084] In a fifth aspect, the present application provides a communication device, comprising a processor, wherein the processor is configured to execute the method described in any one of the first and second aspects and any possible implementation manner.

[0085] The apparatus may further include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the above aspects may be implemented. The apparatus may further include a communication interface for communicating between the apparatus and other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[0086] In a sixth aspect, the present application provides a computer-readable storage medium storing a program code for execution by a device, wherein the program code includes instructions for implementing the method described in any one of the first and second aspects and any possible implementation method.

[0087] In a seventh aspect, the present application provides a computer program product comprising instructions, which, when executed on a device, enables the device to implement the method described in any one of the first and second aspects and any possible implementation method.

[0088] It can be understood that the effects that can be obtained from the second to seventh aspects can be referred to the description in the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] FIG1 is a schematic diagram of the structure of a communication system applicable to an embodiment of the present application;

[0090] FIG2 is a schematic diagram of a perception application scenario provided by this application;

[0091] FIG3 is a schematic diagram of spectrum resources configured by a network device to a terminal device;

[0092] FIG4 is a flow chart of a communication method provided in an embodiment of the present application;

[0093] FIG5 is a schematic diagram of a first bandwidth and a carrier bandwidth of a first communication device provided in an embodiment of the present application;

[0094] FIG6 is a schematic diagram of a frequency domain reference point position of a first signal and a frequency domain common reference point position of a first communication device and a second communication device provided in an embodiment of the present application;

[0095] FIG7 is a schematic diagram of a communication device provided by an embodiment of the present application;

[0096] FIG8 is a schematic diagram of a communication device provided by another embodiment of the present application;

[0097] FIG9 is a schematic diagram of a communication device provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0098] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0099] To facilitate a clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first information and the second information are merely used to distinguish different information and do not limit their order. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, and words such as "first" and "second" do not necessarily limit differences.

[0100] In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a, b, and c. Among them, a, b, and c can be single or multiple.

[0101] The technical solution of the present application can be applied to various communication systems, such as: long term evolution (LTE) communication system, long term evolution advanced (LTE-A) communication system, fifth generation (5G) communication system or new radio (NR), non-terrestrial networks (NTN) and future communication systems, such as sixth generation (6G) communication system, etc., but the present invention is not limited to this.

[0102] Below, the embodiments of the present application are described in detail with reference to the accompanying drawings.

[0103] To facilitate understanding of the embodiments of the present application, a schematic diagram of the communication system structure applicable to the embodiments of the present application is first described in conjunction with Figure 1. As shown in Figure 1, the communication system includes network equipment and terminal equipment.

[0104] The technical solutions provided in the embodiments of this application can be applied to wireless communications between communication devices. Wireless communications between communication devices may include: wireless communications between network devices and terminal devices, wireless communications between network devices, and wireless communications between terminal devices. In the embodiments of this application, the term "wireless communications" may also be referred to as "communication," and the term "communication" may also be described as "data transmission," "information transmission," or "transmission." In the embodiments of this application, a communication device may also be referred to as a network element.

[0105] In the embodiment of the present application, the network device is an entity for transmitting or receiving signals. Optionally, the network device may include a radio access network (RAN) device and a core network device.

[0106] Terminal devices can be connected to wireless access network devices wirelessly, and wireless access network devices can be connected to core network devices wirelessly or by wire. Core network devices and wireless access network devices can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated into the same physical device, or a physical device can integrate some of the functions of the core network device and some of the functions of the wireless access network device. Terminal devices and wireless access network devices can be connected to each other by wire or wireless. As an example, terminal devices and wireless access network devices can be connected via an air interface.

[0107] The terminal device may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. It may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device with wireless communication capabilities. Exemplarily, the UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver capabilities. The terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. The terminal 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. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. In the embodiment of the present application, the device for implementing the function of the terminal can be a terminal; it can also be a device that can support the terminal to implement the function, such as a chip system, or a communication module, or a modem, which can be installed in the terminal. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device for implementing the function of the terminal is a terminal, and the terminal is a UE as an example to describe the technical solutions provided in the embodiments of the present application. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0108] Radio access network equipment can be equipment that provides wireless communication function services, usually located on the network side, including but not limited to: the next generation base station (gNodeB, gNB) in 5G communication systems, the next generation base station in the sixth generation (6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc., the evolved node B (eNB) in the long term evolution (LTE) system, the radio network controller (RNC), the node B (NB), the base station controller (BSC), the home base station (e.g., home evolved NodeB, or home Node B, HNB), the base band unit (BBU), the transmission reception point (TRP), the transmitting point (TP), the base transceiver station (BTS), etc. In a network structure, the access network equipment may include at least one of a centralized unit (CU), a distributed unit (DU), and a radio unit (RU). Access network equipment provides services for a cell. User equipment communicates with a base station through the transmission resources used by the cell (e.g., frequency domain resources, or spectrum resources). The cell can be a cell corresponding to a base station (e.g., a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. Small cells here can include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have small coverage and low transmission power and are suitable for providing high-speed data transmission services. Radio access network equipment can be a satellite, a macro base station, a micro base station or an indoor station, or a relay node or donor node. It provides wireless communication services to user equipment, wireless controllers in cloud radio access network (CRAN) scenarios, relay stations, vehicle-mounted devices, wearable devices, and network equipment in future evolution networks.The access network device in this embodiment may also be an open radio access network (O-RAN) device, which may include at least one of an open distributed unit (O-DU), an open centralized unit (O-CU), and an open radio unit (O-RU).

[0109] The embodiments of the present application do not limit the specific technology and specific device form used by the wireless access network device. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0110] In this application, the number of wireless access network devices and terminal devices may not be limited. For example, the number of wireless access network devices may be at least one, and each of the at least one wireless access network devices may be connected to at least one terminal device.

[0111] In this application, wireless access network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water; and can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of wireless access network equipment and terminal equipment.

[0112] In this communication system, communication can be divided into different types according to the types of sending nodes and receiving nodes. Generally, the transmission of information from a network device to a terminal device is called downlink communication, and the transmission of information from a terminal device to a network device is called uplink communication. For example, in some systems, the duplex mode can be mainly divided into frequency division duplex (FDD) mode and time division duplex (TDD) mode. For a wireless communication system operating in TDD mode, the downlink carrier and uplink carrier of the system are carriers of the same carrier frequency. The multiple access method usually adopts orthogonal frequency division multiplexing access (OFDMA). The main feature of the orthogonal frequency division multiplexing access method is that the transmission resources are divided into mutually orthogonal time-frequency resource elements (REs). The signals sent by the transmitter are carried on the REs and transmitted to the receiver. Since different REs are orthogonal to each other, the receiver can receive the signal sent on each RE separately.

[0113] In this communication system, while the network device and the terminal device are communicating, they can also sense some targets that do not have communication functions to obtain perception results.

[0114] The technical principles of perception differ somewhat from those of communication. In communication, a transmitter modulates information onto radio waves and transmits them to a receiver, which then demodulates the signal carried on the radio waves to retrieve the information. Perception, on the other hand, requires the transmitter to send radio waves in a specific direction. When these waves strike a target surface, they reflect back, which the receiver then processes to determine information such as the target's location, speed, and type. Targets that can be perceived include, but are not limited to, vehicles, low-altitude drones, pedestrians, and other moving or stationary objects.

[0115] Perception can generally be categorized into two modes: single-station sensing and dual-station sensing. In single-station sensing, the transmitter and receiver of the sensing signal are the same device. In terms of the sensing signal process, the sensing station both transmits the sensing signal and receives the signal reflected from the target surface. Therefore, the single-station sensing mode is also known as the self-transmitting, self-receiving mode. In dual-station sensing, the transmitter and receiver of the sensing signal are different devices. In terms of the sensing signal process, after sensing station A transmits the sensing signal, the signal reflected from the target surface is received by sensing station B. Therefore, the dual-station sensing mode is also known as the A-transmitting, B-receiving mode.

[0116] Optionally, the perception mode may include multiple application scenarios. For example, the base station transmits and receives automatically (as shown in (a) in Figure 2), base station A transmits and base station B receives (as shown in (b) in Figure 2), base station transmits and terminal receives (as shown in (c) in Figure 2), terminal transmits and receives automatically (as shown in (d) in Figure 2), terminal A transmits and terminal B receives (as shown in (e) in Figure 2), terminal transmits and base station receives (as shown in (f) in Figure 2), etc. It should be noted that the above specific perception application scenarios are only examples and do not create limitations.

[0117] The quality of the perception result can be characterized by the perception resolution. The smaller the value of the perception resolution, the stronger the perception resolution and the stronger the perception ability.

[0118] For example, assume that when the distance between two perceived targets is greater than or equal to 2 meters, perception signal 1 can distinguish the two targets. When the distance between the two perceived targets is less than 2 meters, perception signal 1 cannot distinguish the two targets. Therefore, perception signal 1 can be used to perceive objects more than 2 meters apart. Furthermore, assume that when the distance between two perceived targets is greater than or equal to 1 meter, perception signal 2 can distinguish the two targets. When the distance between the two perceived targets is less than 1 meter, perception signal 2 cannot distinguish the two targets. Therefore, perception signal 2 can be used to perceive objects more than 1 meter apart.

[0119] In this example, the perception resolution corresponding to the perception signal 2 is smaller and the perception capability is stronger.

[0120] In this application, perceived resolution can also be referred to as perceived distance dimension resolution or distance dimension resolution.

[0121] The perceptual resolution may be associated with the bandwidth of the perceptual signal, and the perceptual resolution may satisfy: Where B represents the bandwidth of the signal, c represents the speed of light, and ΔR represents the perceived resolution.

[0122] Therefore, the larger the signal bandwidth, the smaller the perception resolution, and the stronger the perception distance resolution ability, that is, objects that are relatively close can also be detected.

[0123] Currently, communication devices can sense objects using reference signals. For example, after a network device sends a downlink reference signal to a terminal device, it can receive an echo signal formed after the downlink reference signal reflects off an object, and then obtain a sensing result based on the echo signal. For another example, after a network device sends a downlink reference signal to a terminal device, the terminal device can receive an echo signal formed after the downlink reference signal reflects off an object, and then obtain a sensing result based on the echo signal.

[0124] It can be understood that the echo signal here is intended to emphasize the transmission path of the reference signal, that is, the signal formed after the reference signal emitted by the network device is reflected by the object. The signal type of the echo signal does not change, so the essence of the echo signal here is still a reference signal. Therefore, the terminal device receives the echo signal, which can also be understood as the terminal device receiving the reference signal.

[0125] In existing communication systems, due to limitations on the capabilities of terminal devices, network equipment configures a contiguous section of spectrum resources, known as a bandwidth part (BWP), for terminal devices. The terminal devices can then receive data based on the BWP. For example, if the downlink reference signal is a positioning reference signal (PRS), the network equipment configures the PRS based on the serving cell and notifies the terminal device of relevant information (e.g., configuration information) via RRC signaling. The terminal device then receives the PRS based on the network equipment's configuration.

[0126] The configuration of the network device can be used to instruct the terminal device on how to receive signals. As an example, the configuration of the network device can instruct the terminal device to receive PRS signals on the BWP. As another example, the configuration of the network device can instruct the terminal device to receive PRS signals on the full bandwidth supported by the terminal device.

[0127] Different terminal devices can be configured with different BWPs. As shown in Figure 3, assume that BWP1 is the spectrum resource configured by the network device for terminal device 1, and BWP2 is the spectrum resource configured by the network device for terminal device 2. Terminal device 1 can receive PRS signals based on BWP1, and terminal device 2 can receive PRS signals based on BWP2.

[0128] It is worth noting that when measurement gaps are not configured, the terminal device will only receive the corresponding PRS signal based on the currently activated BWP. Here, the corresponding PRS signal can be a PRS signal located within the activated BWP. In this case, the terminal device needs to determine the PRS signal located within the BWP based on the relevant information of the PRS signal sent by the network device and receive the PRS signal located within the BWP.

[0129] In the existing technology, network equipment or terminal equipment can perform perception based on reference signals, but the bandwidth of the reference signal is usually limited by the carrier bandwidth (or cell bandwidth) of the network equipment, or the bandwidth of the reference signal is usually smaller than the carrier bandwidth of the network equipment. The bandwidth of the reference signal is small, so there is often a situation where there is actually an object but it cannot be perceived, and the perception resolution is poor.

[0130] To this end, the present application provides a new technical solution to solve the problem of poor perceptual resolution in the prior art.

[0131] In the technical solution of this application, a network device may first determine a first bandwidth, which may be greater than the carrier bandwidth of the network device, and then transmit a first signal having the first bandwidth. This first signal is used for perception. Compared to the prior art, the bandwidth of the first signal in this application is greater than the bandwidth of the reference signal, resulting in a higher perception resolution, i.e., a higher perception resolution capability.

[0132] The carrier bandwidth of the network device may be the maximum signal bandwidth supported by the current carrier of the network device, and the current carrier of the network device may be a carrier supported by or used by the current service cell of the network device.

[0133] Optionally, the carrier bandwidth here can also be called cell bandwidth, or transmission bandwidth, or channel bandwidth, etc.

[0134] Next, this application will provide a detailed introduction to the method of this application in conjunction with Figures 4 to 9.

[0135] Figure 4 is a flow chart of a communication method provided by an embodiment of the present application. As shown in Figure 4, the method may include S401 and S402.

[0136] S401: A first communication device determines a first bandwidth, where the first bandwidth is greater than a carrier bandwidth of the first communication device.

[0137] In this method, the first communication device may be a network device in the communication system shown in FIG1 , such as a base station.

[0138] The carrier bandwidth of the first communication device may be the maximum signal bandwidth supported by the current carrier of the first communication device. The current carrier of the first communication device may be a carrier supported by or used by the current serving cell of the first communication device.

[0139] Optionally, the carrier bandwidth here may also be referred to as cell bandwidth, transmission bandwidth, channel bandwidth, etc.

[0140] Optionally, the carrier bandwidth can be configured through higher-layer signaling, and the carrier bandwidth corresponding to different frequency bands can be different. For example, for the low-frequency band (FR1 band), the carrier bandwidth can be 5 MHz, 15 MHz, or 30 MHz; for the millimeter-wave high-frequency band (FR2 band), the carrier bandwidth can be 100 MHz, 200 MHz, etc.

[0141] As an example, the first bandwidth and the carrier bandwidth of the first communication device may be as shown in FIG5 .

[0142] It can be understood that the first bandwidth does not exceed the maximum bandwidth supported by the first communication device.

[0143] S402: A first communication device sends a first signal, where the bandwidth of the first signal is a first bandwidth and the first signal is used for sensing.

[0144] In this method, the type of the first signal is not limited. Optionally, the first signal may be a signal specifically used for sensing, which may be referred to as a sensing signal. Optionally, the first signal may also be a reference signal.

[0145] Before sending the first signal, the first communication device may generate the first signal.

[0146] Optionally, the first signal may be generated in a predefined manner. As an example, the first signal may be generated in a manner similar to a reference signal (e.g., a channel state information-reference signal (CSI-RS), a demodulation reference signal (DMRS), a PRS, etc.), and may be defined by a pseudo-random sequence.

[0147] As an example, the first signal may satisfy formula (1):

[0148] Here, r(m) may represent a sequence of the first signal, and c(i) represents a pseudo-random sequence.

[0149] An example of a pseudo-random sequence is a gold sequence. Optionally, the first signal can be defined by a 31-order gold sequence.

[0150] The pseudo-random sequence can be determined by the initial value. As an example, when the first signal is defined by a 31-order gold sequence, the initial value can be c init =(2 10 n ID )mod2 31 , n ID is the cell ID, c init is the initial value. At this time, the generator polynomial of the pseudo-random sequence can satisfy formula (2):

[0151] Among them, N c =1600, x1(0)=1, x1(n)=0, n=1, 2, ..., 30, x2(n) depends on the initial value, and the relationship between x2(n) and the initial value can satisfy formula (3):

[0152] In a possible implementation, after the first communication device sends the first signal, the first communication device may receive an echo signal formed after the first signal is reflected by a target, and then perform perception based on the echo signal.

[0153] In another possible implementation, the first communication device may send the first signal to the second communication device, and then the second communication device may receive an echo signal of the first signal and then perform perception based on the echo signal of the first signal.

[0154] In this application, the echo signal of the first signal is to emphasize the transmission path of the first signal, that is, the echo signal formed after the first signal emitted by the first communication device of the network is reflected by the target. The signal type of the echo signal will not change, so the second communication device receives the echo signal of the first signal here, which can also be understood as the second communication device receiving the first signal.

[0155] As an example, when the first communication device is a network device, the second communication device may be a terminal device or a network device. When the second communication device is a network device, the second communication device and the first communication device are different network devices.

[0156] In this method, the bandwidth of the first signal used for perception is greater than the carrier bandwidth of the first communication device, and the bandwidth of the first signal is greater than the bandwidth of the reference signal used for perception in the prior art. Because a larger bandwidth of the perception signal leads to a higher perception resolution and a stronger perception and resolution capability, the present application can improve perception and resolution capability.

[0157] Optionally, when the first communication device sends a first signal to the second communication device, the first communication device may also send first information to the second communication device, where the first information is used to indicate at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period, etc.

[0158] In this method, the first information may indicate configuration information of the first signal, so that the second communication device can receive the first signal based on the first information and then perform perception based on the first signal. This avoids the situation where the second communication device is unaware of the configuration information of the first signal and thus considers the first signal as an interference signal, thereby avoiding the problem of being unable to obtain perception results.

[0159] Optionally, when the second communication device is a terminal device, the terminal device may determine whether to receive the first signal based on a signal receiving capability, wherein the signal receiving capability of the terminal device may be associated with information such as a target subcarrier spacing and / or a target cyclic prefix (CP) type.

[0160] The target subcarrier spacing may be the subcarrier spacing of the terminal device on the corresponding BWP or the subcarrier spacing of the terminal device on the activated BWP, or the subcarrier spacing that the terminal device can support. The target subcarrier spacing may be pre-configured.

[0161] The target cyclic prefix type may be the cyclic prefix type of the terminal device on the corresponding BWP or the cyclic prefix type of the terminal device on the activated BWP, or a cyclic prefix type that the terminal device can support. The target cyclic prefix type may be pre-configured.

[0162] In this case, the first information may include a first field, which may be used to indicate the subcarrier spacing of the first signal. As an example, the first field may include 3 bits, corresponding to eight values, each of which may correspond to a subcarrier spacing. Optionally, the values ​​and meanings of the first field may be as shown in Table 1.

[0163] Table 1: Values ​​and meanings of the first field

[0164] In this method, the terminal device can determine the subcarrier spacing of the first signal based on the first field, and then determine whether the subcarrier spacing of the first signal is consistent with the target subcarrier spacing. Only when it is determined that the subcarrier spacing of the first signal is consistent with the target subcarrier spacing will the terminal device receive the first signal. This can avoid the situation where the terminal device receives the first signal but is unable to process the first signal, which is conducive to improving resource utilization.

[0165] Optionally, the first information may further include a second field, which may be used to indicate the cyclic prefix type of the first signal. As an example, the second field may include one bit, corresponding to two values, each of which may correspond to a cyclic prefix type. Optionally, the values ​​and meanings of the second field may be as shown in Table 2.

[0166] Table 2: Second field value and meaning

[0167] In this example, when the second field takes a value of 0, it indicates that the cyclic prefix type of the first signal is a normal cyclic prefix type. When the second field takes a value of 1, it indicates that the cyclic prefix type of the first signal is an extended cyclic prefix type.

[0168] In this method, the terminal device can determine the cyclic prefix type of the first signal based on the second field, and then determine whether the cyclic prefix type of the first signal is consistent with the target cyclic prefix type. Only when it is determined that the cyclic prefix type of the first signal is consistent with the target cyclic prefix type, the first signal is received. This can avoid the situation where the terminal device receives the first signal but is unable to process the first signal, which is conducive to improving resource utilization.

[0169] In this method, the first information may further include a third field, and the third field may indicate a frequency domain reference point position of the first signal.

[0170] Optionally, the frequency domain reference point position can be characterized by the absolute frequency of the reference resource block (RB). The absolute frequency of the reference RB can be calculated by the number of the global frequency grid. In other words, the frequency domain reference point position of the first signal can be calculated by the number of the global frequency grid of the first signal.

[0171] In this method, the third field may include N bits, corresponding to 2 N states, each state may correspond to a value, and each value may correspond to a number of a global frequency grid.

[0172] As an example, assuming that N is equal to 3, each value of the third field and its corresponding meaning can be shown in Table 3.

[0173] Table 3: Values ​​and meanings of the third field

[0174] It is understood that the value and meaning of the third field are merely examples and do not limit the scope of the present application. As an example, the number of the global frequency grid may range from 0 to 3279165, and N may be other values.

[0175] In this method, after the second communication device receives the first information, it can determine the corresponding global frequency grid number (i.e., the global frequency grid number of the first signal) based on the third field in the first information, and then calculate the frequency domain reference point position of the first signal based on the global grid frequency number of the first signal.

[0176] As an example, the frequency domain reference point position may satisfy formula (4):

[0177] F REF =F REF-Offs +ΔF Global (N REF -N REF-Offs ) (4)

[0178] Among them, F REF Indicates the frequency domain reference point position, N RRF Indicates the global frequency grid number, ΔF Global represents the global frequency grid interval, F REF-Offs Indicates the frequency starting point, N REF-Offs Indicates the starting point of the global frequency grid.

[0179] In one example, the global frequency grid is defined from 0 Hz to 100 GHz, and its frequency domain grid interval may take different values ​​according to different frequency intervals, as shown in Table 4.

[0180] Table 4: Global frequency grid

[0181] As an example, assuming that the third field indicates that the global frequency grid number is 600001, then based on formula (4) and Table 4, it can be calculated that the absolute frequency of the reference RB of the first signal is 3015 MHz.

[0182] Optionally, in some embodiments, the third field may indicate a first offset, where the first offset is an offset between a frequency domain reference point position of the first signal and a frequency domain common reference point position of the first communication device and the second communication device.

[0183] As an example, the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device may be as shown in FIG6 .

[0184] In this method, the frequency domain common reference point position of the first communication device and the second communication device may be pre-configured in the first communication device and the second communication device.

[0185] Optionally, the first communication device may first calculate the first offset and then send the first offset to the second communication device through the third field, so that the second communication device may determine the frequency domain reference point position of the first signal based on the first offset and the frequency domain common reference point position.

[0186] Optionally, the first offset may be represented by an offset coefficient. In this case, the third field may be used to indicate the offset coefficient.

[0187] As an example, the third field may include 4 bits, corresponding to 16 values, each of which may correspond to an offset coefficient. Optionally, the values ​​and meanings of the third field may be as shown in Table 5.

[0188] Table 5: Values ​​and meanings of the third field

[0189] It can be understood that the value and meaning of the third field are only a simple example and do not limit the scope of the first field in this application.

[0190] In this method, the frequency domain reference point position of the first signal can satisfy: S=S1+t×a, where S represents the frequency domain reference point position of the first signal, S1 represents the common frequency domain reference point position of the first communication device and the second communication device, t represents the offset coefficient, and a represents the frequency offset corresponding to the unit offset coefficient.

[0191] Optionally, the value of a may be different in different frequency ranges. For example, the value of a in the FR1 frequency range may be 15 kHz, and the value of a in the FR2 frequency range may be 60 kHz.

[0192] Optionally, the value of a may also correspond to the value of the global frequency grid interval. For example, the value of a may be consistent with the value of the global frequency grid interval in Table 4.

[0193] Optionally, if the first information does not include the third field, it may indicate that the offset coefficient is zero.

[0194] Optionally, the second communication device may also determine the first sequence of the first signal based on the first field and the third field in the first information.

[0195] In one possible implementation, the second communication device can determine the frequency domain reference point position of the first signal based on the third field in the first information, and then determine the first sequence of the first signal based on the subcarrier spacing indicated by the first field and the frequency domain reference point position of the first signal.

[0196] In the method, the first sequence may include at least one sequence.

[0197] In the present application, the first signal sent by the first communication device may include multiple sequences, and the multiple sequences sent by the first communication device may be referred to as transmission sequences.

[0198] In this method, the first sequence may be included in the transmitted sequence. In other words, at least one sequence in the first sequence may be included in multiple sequences in the transmitted sequence, or at least one sequence in the first sequence may be a subset of multiple sequences in the transmitted sequence.

[0199] Among them, the method in which the second communication device first determines whether to receive the first signal based on the first field and / or the second field in the first information and the second communication device determines the frequency domain reference point position of the first signal based on the third field in the first information can refer to the aforementioned embodiment and will not be repeated here.

[0200] Optionally, the method for the second communication device to determine the first sequence of the first signal based on the subcarrier spacing indicated by the first field and the frequency domain reference point position of the first signal may include: the second communication device determines the frequency carried by each sequence in the transmission sequence of the first signal based on the subcarrier spacing and the frequency domain reference point position of the first signal, and then determines at least one sequence carried within the target frequency domain range in the transmission sequence of the first signal as the first sequence.

[0201] The target frequency domain range may be pre-configured. Optionally, when the second communication device is a terminal device, the target frequency domain range may be the bandwidth on the BWP corresponding to the terminal device or the bandwidth on the currently activated BWP.

[0202] As an example, assuming that the frequency domain range of the transmitting sequence of the first signal is [0, 1000 Hz] and the target frequency domain range is [600 Hz, 800 Hz], and assuming that the second communication device determines that there are M sequences in the transmitting sequence of the first signal carried in the target frequency domain range, the second communication device can determine these M sequences as the first sequence, where M is an integer greater than 1.

[0203] In this method, the second communication device can determine the frequency domain reference point position of the first signal based on the third field, and then determine the sequence in the first signal within the target frequency domain range based on the frequency domain reference point position of the first signal, and then perform perception based on the sequence in the first signal within the target frequency domain range to obtain a perception result.

[0204] Optionally, the first information may further include a fourth field, which may indicate the position of the first symbol in the first time slot. The first time slot may be the time slot for sending the first signal, and the first symbol may be the symbol for sending the first signal in the first time slot.

[0205] In the present application, the symbols in the first time slot may be orthogonal frequency division multiplexing (OFDM) symbols.

[0206] In this method, the first communications device may continuously transmit the first signal within the coherent processing time. Optionally, in some embodiments, the first signal may be transmitted periodically. In this case, the fourth field may be used to indicate the symbol at which transmission of the first signal begins in the first time slot. The first symbol may be the symbol at which transmission of the first signal begins in the first time slot.

[0207] As an example, assuming that a time slot includes 14 symbols, the fourth field may include 4 bits, corresponding to 16 values, each of which may correspond to a symbol. Optionally, the values ​​and meanings of the fourth field may be as shown in Table 4.

[0208] Table 6: Values ​​and meanings of the fourth field

[0209] In this embodiment, the first time slot may be pre-configured, or the first time slot may be a default time slot, that is, the first communication device and the second communication device may determine that the first signal is sent in the first time slot. For example, the first time slot may be a starting time slot by default, and the starting time slot may be the first time slot used for sensing in a system frame (or radio frame), and the first time slot used for sensing may be a time slot scheduled by the first communication device to start sensing.

[0210] In this method, the second communication device can determine the start transmission time of the first signal based on the fourth field, then receive the first signal based on the start transmission time and perform sensing based on the first signal to obtain a sensing result. This avoids the situation where the second communication device cannot receive the first signal due to not knowing the transmission time of the first signal.

[0211] Optionally, the first time slot may not be the default one, and the first information may further include a fifth field, where the fifth field is used to indicate a second offset, and the second offset may be an offset between the first time slot and the start time slot.

[0212] As an example, the fifth field may include 2 bits, corresponding to four values, each of which may correspond to a time slot. Optionally, the values ​​and meanings of the fifth field may be as shown in Table 7.

[0213] Table 7: Values ​​and meanings of the fifth field

[0214] In this example, if the first time slot is offset by 1 time slot relative to the starting time slot, it indicates that the first time slot is the first time slot after the starting time slot. If the first time slot is offset by 2 time slots relative to the starting time slot, it indicates that the first time slot is the second time slot after the starting time slot. If the first time slot is offset by 3 time slots relative to the starting time slot, it indicates that the first time slot is the third time slot after the starting time slot. If the first time slot is offset by 4 time slots relative to the starting time slot, it indicates that the first time slot is the fourth time slot after the starting time slot.

[0215] Optionally, if the first information does not include the fifth field, it may indicate that the first time slot is relatively offset from the starting time slot by zero time slots, that is, the first time slot is the starting time slot.

[0216] Optionally, in some embodiments, the first information may also indicate the length of the first time slot.

[0217] Optionally, the first time slot may include at least one time slot.

[0218] In this method, the second communication device can determine the starting sending time of the first signal based on the fourth field and the fifth field, and then receive the first signal based on the sending time and perform perception based on the first signal to obtain a perception result.

[0219] Optionally, in some embodiments, the first information may further include a sixth field, and the sixth field may be used to indicate a sending period of the first signal.

[0220] As an example, assuming that a timeslot can contain 14 symbols, the sixth field can include 4 bits, corresponding to 16 values, each of which can correspond to a transmission cycle. Optionally, the values ​​and meanings of the sixth field can be as shown in Table 8.

[0221] Table 8: Values ​​and meanings of the sixth field

[0222] When the value of the sixth field is 0001, it may indicate that the transmission period of the first signal is 2 symbols, that is, the first signal is transmitted every other symbol.

[0223] In one example, if the first time slot is the default, the second communication device can determine all symbols that send the first signal based on the fourth field and the sixth field, and then determine the sending time of each first signal, and then receive each first signal based on the sending time of each first signal, and then perceive the target based on each first signal to obtain a perception result.

[0224] In another example, if the first time slot is not the default, the second communication device can determine all symbols that send the first signal based on the fourth field, the fifth field, and the sixth field, and then determine the sending time of each first signal, and then receive each first signal based on the sending time of each first signal, and then perceive the target based on each first signal to obtain a perception result.

[0225] Optionally, when the transmission period of the first signal is 2 symbols, the sixth field may include 1 bit, corresponding to two values, and the two values ​​may correspond to two states respectively. For example, the two values ​​may correspond to state 0 and state 1, respectively, where state 0 indicates that the first signal is sent on odd-numbered symbols, and state 1 indicates that the first signal is sent on even-numbered symbols.

[0226] In this example, the sixth field occupies fewer bits, and when the first communication device sends the sixth field to the second communication device, the transmission overhead can be reduced.

[0227] Optionally, in some embodiments, the first signal may be transmitted aperiodically. In this case, the fourth field may indicate all symbols transmitting the first signal in the first time slot, and the first symbol may include all symbols transmitting the first signal in the first time slot.

[0228] As an example, assuming that the first time slot includes 14 symbols, the fourth field may include 14 bits, and these 14 bits may correspond one-to-one to these 14 symbols. Each of the 14 bit values ​​may indicate the state of the symbol corresponding to each bit value.

[0229] For any symbol, the bit corresponding to the symbol may correspond to two values, each of which may correspond to a state. For example, the two values ​​may be 1 or 0. When the bit value corresponding to any symbol is 1, it indicates that the symbol transmits the first signal, and when the bit value corresponding to any symbol is 0, it indicates that the symbol does not transmit the first signal.

[0230] In this embodiment, the first time slot may be pre-configured, or the first time slot may be a default time slot, that is, the first communication device and the second communication device may determine that the first signal is sent in the first time slot. For example, the first time slot may be a starting time slot by default.

[0231] In this embodiment, the second communication device can determine the sending time of all first signals based on the fourth field, then receive each first signal based on the sending time of each first signal, and then perceive the target based on each first signal to obtain a perception result.

[0232] Optionally, the first time slot may not be the default one, and the first information may further include a fifth field, where the fifth field is used to indicate a second offset, and the second offset may be an offset between the first time slot and the start time slot.

[0233] For the relevant content of the fifth field, please refer to the fifth field in the aforementioned embodiment and will not be repeated here.

[0234] Optionally, in some embodiments, the first information may also indicate the length of the first time slot.

[0235] Optionally, the first time slot may include at least one time slot.

[0236] In this embodiment, the second communication device can determine the sending time of all first signals based on the fourth field and the fifth field, then receive each first signal based on the sending time of each first signal, and then perceive the target based on each first signal to obtain a perception result.

[0237] Optionally, when the second communication device is a terminal device, the first information can be carried in broadcast information, in system information, in radio resource control (RRC) layer signaling, in a media access control layer (MAC) control element (CE) message, or in a downlink control information (DCI) message.

[0238] Optionally, when the second communication device is a network device, the first information may be carried in an Xn interface between base stations.

[0239] The above embodiment is described by taking the first communication device as a network device as an example. Optionally, in some future communication systems, the first communication device may also be a terminal device, that is, the terminal device may send a perception signal with a bandwidth of the first bandwidth.

[0240] Optionally, when the first communication device is a terminal device, the second communication device may be a network device or other terminal device.

[0241] FIG7 is a schematic diagram of a communication device according to an embodiment of the present application. As shown in FIG7 , the communication device 700 may include a determination module 701 and a sending module 702 .

[0242] As an example, the communication device 700 may be used to implement the method of the embodiment shown in Figure 4. The determining module 701 may be used to execute S401, and the sending module 702 may be used to execute S402.

[0243] In this example, the communication apparatus 700 may be applied to a first communication device, or may be applied to a chip in the first communication device.

[0244] FIG8 is a schematic diagram of a communication device according to another embodiment of the present application. As shown in FIG8 , the communication device 800 may include a receiving module 801 .

[0245] As an example, the communication device 800 may be used to implement the method of the embodiment shown in Figure 4. The receiving module 801 may be used to execute S402.

[0246] In this example, the communication apparatus 800 may be applied to a second communication device, or may be applied to a chip in the second communication device.

[0247] Figure 9 is a schematic diagram of a communication device provided in yet another embodiment of the present application. As shown in Figure 9, communication device 900 includes a processor 901 and an interface circuit 902. Processor 901 and interface circuit 902 are coupled to each other. It will be appreciated that interface circuit 902 may be a transceiver or an input / output interface. Optionally, communication device 900 may further include a memory 903 for storing instructions executed by processor 901, input data required by processor 901 to execute instructions, or data generated after processor 901 executes instructions.

[0248] As an example, the processor 901 may be used to implement the function of the above-mentioned determination module 701 , and the interface circuit 902 may be used to implement the function of the above-mentioned sending module 702 .

[0249] In this example, the communication apparatus 900 may be a first communication device, or may be a chip used in the first communication device.

[0250] As another example, the interface circuit 902 can be used to implement the functions of the above-mentioned receiving module 801.

[0251] In this example, the communication apparatus 900 may be a second communication device, or may be a chip used in the second communication device.

[0252] The method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium can also be present in a network device or a terminal device as discrete components.

[0253] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive.

[0254] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0255] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Determine a first bandwidth, where the first bandwidth is greater than the carrier bandwidth of the first communication device; Transmit a first signal, where the bandwidth of the first signal is the first bandwidth, and the first signal is used for sensing.

2. The method according to claim 1, characterized in that The method further includes: Send first information to a second communication device, where the first information indicates at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period.

3. The method according to claim 2, characterized in that, The first information indicating the subcarrier spacing of the first signal includes: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal.

4. The method according to claim 2 or 3, characterized in that, The first information indicating the cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates the cyclic prefix type of the first signal.

5. The method according to any one of claims 2 to 4, characterized in that The first information indicating the frequency domain position of the first signal includes: the first information includes a third field, and the third field indicates the frequency domain reference point position or a first offset of the first signal, where the first offset is the offset between the frequency domain reference point position of the first signal and the frequency domain common reference point position of the first communication device and the second communication device.

6. The method according to any one of claims 2 to 5, characterized in that, The first information indicating the time domain position of the first signal includes: the first information includes a fourth field, and the fourth field indicates the position of the first symbol in the first time slot, where the first time slot is the time slot for transmitting the first signal, and the first symbol is the symbol for transmitting the first signal in the first time slot.

7. The method according to claim 6, characterized in that, The first information further includes a fifth field, and the fifth field indicates a second offset, where the second offset is the offset between the first time slot and the starting time slot, and the starting time slot is the first time slot for sensing.

8. The method according to any one of claims 2 to 7, characterized in that, The first information indicating the signal period of the first signal includes: the first information includes a sixth field, and the sixth field indicates the transmission period of the first signal.

9. A communication method, characterized in that, Applied to a second communication device, the method includes: Receive a first signal from the first communication device, where the bandwidth of the first signal is the first bandwidth, the first bandwidth is greater than the carrier bandwidth of the first communication device, and the first signal is used for sensing.

10. The method according to claim 9, wherein The receiving the first signal from the first communication device includes: Receive first information from the first communication device, where the first information indicates at least one of the following information of the first signal: frequency domain position, time domain position, subcarrier spacing, cyclic prefix, or signal period; Receive the first signal based on the first information.

11. The method according to claim 10, wherein The first information indicating the subcarrier spacing of the first signal includes: the first information includes a first field, and the first field indicates the subcarrier spacing of the first signal; The receiving the first signal based on the first information includes: When the subcarrier spacing of the first signal is consistent with the target subcarrier spacing, receive the first signal.

12. The method according to claim 10 or 11, characterized in that, The first information indicating the cyclic prefix of the first signal includes: the first information includes a second field, and the second field indicates the cyclic prefix type of the first signal; Receiving the first signal based on the first information includes: Receiving the first signal when a cyclic prefix type of the first signal is consistent with a target cyclic prefix type.

13. The method according to any one of claims 10 to 12, characterized in that, The first information indicating a frequency domain position of the first signal includes: The first information includes a third field, and the third field indicates a frequency domain reference point position or a first offset of the first signal, where the first offset is an offset between a frequency domain reference point position of the first signal and a frequency domain common reference point position of the first communication device and the second communication device; The method further includes: Determining a first sequence of the first signal based on a first field and the third field in the first information.

14. The method according to any one of claims 10 to 13, characterized in that, The first information indicating a time domain position of the first signal includes: The first information includes a fourth field, and the fourth field indicates a position of a first symbol in a first time slot, where the first time slot is a time slot for transmitting the first signal, and the first symbol is a symbol for transmitting the first signal in the first time slot.

15. The method according to claim 14, characterized in that, The first information further includes a fifth field, and the fifth field indicates a second offset, where the second offset is an offset between the first time slot and a starting time slot, and the starting time slot is a first time slot for sensing.

16. The method according to any one of claims 10 to 15, characterized in that, The first information indicating a signal period of the first signal includes: The first information includes a sixth field, and the sixth field indicates a transmission period of the first signal.

17. A communication device, characterized in that, Including a functional module for implementing the method according to any one of claims 1 to 16.

18. A communication device, characterized in that, Including: A memory and a processor; The memory is configured to store program instructions; The processor is configured to execute the program instructions in the memory to implement the method according to any one of claims 1 to 16.

19. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program code for computer execution, and the program code includes instructions for implementing the method according to any one of claims 1 to 16.

20. A computer program product, characterized in that, The computer program product includes instructions for implementing the method according to any one of claims 1 to 16.

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