Signal sending method and device

Abstract

The invention provides a signal sending method and device, and the method comprises the steps: determining a first timing, the first timing is used for sending a first signal, the first timing has a first timing offset relative to a second timing, the second timing is used for sending a second signal to terminal equipment, the first signal is used for sensing, and the first timing is used for sending a second signal; the second signal is used for communication, and the first timing offset is determined according to the time length of the network device switching from a sending mode to a receiving mode; and sending the first signal at the first timing in a first time period. The first timing offset is determined according to the duration required by the conversion from sending to receiving of the network equipment, so that the network equipment does not need to reserve resources in a symbol unit during the conversion from sending to receiving, the overhead of the resources reserved for the conversion sent and received by the network equipment can be reduced, and the utilization rate of spectrum resources is improved.

Description

Technical Field

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

[0002] In a wireless communication system, communications can be divided into different types according to the types of sending nodes and receiving nodes. Generally, sending information from a network device to a terminal device is called downlink communication, and sending information from a terminal device to a network device is called uplink communication.

[0003] The technical principle of perception is somewhat different from communication. Perception requires the transmitter to send radio waves in a specific direction. When the radio waves hit the target surface, reflected radio waves are formed. The receiver receives and processes the reflected radio waves to obtain information such as the target's location, speed, and type. Perception includes dual-station perception in terms of mode. Specifically, the transmitter and receiver of the perception signal are two different devices. From the perspective of the perception signal process, after the perception site A sends the perception signal, the signal reflected on the target surface is received by the perception site B. Therefore, the dual-station perception mode is also called the A send B receive mode.

[0004] For the sensing mode of base station A sending and base station B receiving, base station B needs a certain switching time when switching from downlink communication mode to sensing reception mode. In the prior art, a symbol is reserved for the base station to complete the switching, such as Figure 1 As shown, the blank symbol marked as GAP1 is reserved for the base station B (perceptual receiving station) to switch from sending to receiving, and the blank marked as GAP2 is reserved for the base station A (perceptual sending station) to switch from sending to receiving.

[0005] The granularity of the time resources reserved for the base station's transition from sending to receiving is in units of one symbol, that is, the base station needs at least one symbol to complete each transition from sending to receiving. In fact, the time it takes for the base station to complete a transition from sending to receiving is less than the duration of one symbol, which greatly reduces the amount of resources used for communication or perception, resulting in reduced spectrum utilization. Summary of the invention

[0006] The present application provides a method and device for signal transmission, which can reduce the overhead of resources reserved for conversion between transmission and reception of a base station and improve the utilization rate of spectrum resources.

[0007] In a first aspect, a method for sending a signal is provided. The method may be executed by a first network device, or may be executed by a chip or circuit configured in the first network device, and the present application does not limit this.

[0008] The method includes: determining a first timing, the first timing is used to send a first signal, the first timing has a first timing offset relative to a second timing, the second timing is used to send a second signal to a terminal device, the first signal is used for perception, the second signal is used for communication, and the first timing offset is determined according to the length of time for the network device to switch from a sending mode to a receiving mode; and sending the first signal at the first timing in a first time period.

[0009] Through the above scheme, the sending timing of the perception signal has a timing offset relative to the sending timing of the downlink communication. The timing offset is determined according to the time required for the network device to switch from sending to receiving. The network device can send the perception signal immediately after the network device completes the switch from sending to receiving based on the timing of sending the perception signal. Therefore, the network device does not need to reserve resources in units of symbols for the switch from sending to receiving, which can reduce the overhead of resources reserved for the switch between sending and receiving of the network device and improve the utilization rate of spectrum resources.

[0010] It should be understood that the time required for a network device to transition from sending to receiving may be the time required for a specific network device to transition from sending to receiving; or, since the capabilities of each network device are different, the time required for the transition from sending to receiving is also different, and the time required for the network device to transition from sending to receiving may also be a time determined based on the capabilities of multiple network devices.

[0011] It should be understood that the first timing has a first timing offset relative to the second timing, including: the first timing is delayed by the first timing offset relative to the second timing, or the first timing is advanced by the first timing offset relative to the second timing.

[0012] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0013] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0014] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0015] In combination with the first aspect, in some implementations of the first aspect, the method further includes: sending first indication information to the terminal device, where the first indication information is used to indicate a first timing offset.

[0016] In a possible implementation manner, the first indication information is used to indicate that the first timing offset is 0 or not 0.

[0017] In one possible implementation, the first time period includes at least one symbol from the i+1th symbol to the jth symbol in the first time slot; and / or, at least one symbol from the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0018] In a second aspect, a method for sending a signal is provided. The method may be executed by a second network device, or may be executed by a chip or circuit configured in the second network device, and the present application does not limit this.

[0019] The method includes: determining a first timing, the first timing is used to receive a first signal, the first timing has a first timing offset relative to a second timing, the second timing is used to send a second signal to a terminal device, the first signal is used for perception, and the second signal is used for communication; receiving the first signal and / or a reflected signal of the first signal at the first timing in a first time period.

[0020] Through the above scheme, the receiving timing of the perception signal has a timing offset relative to the sending timing of the downlink communication. The timing offset is determined according to the time required for the network device to switch from sending to receiving. The network device can receive the perception signal immediately after the network device completes the switch from sending to receiving based on the receiving timing of the perception signal. Therefore, the network device does not need to reserve resources in units of symbols for the switch from sending to receiving, which can reduce the overhead of resources reserved for the switch between sending and receiving of the network device and improve the utilization rate of spectrum resources.

[0021] It should be understood that the time required for a network device to transition from sending to receiving may be the time required for a specific network device to transition from sending to receiving; or, since the capabilities of each network device are different, the time required for the transition from sending to receiving is also different, and the time required for the network device to transition from sending to receiving may also be a time determined based on the capabilities of multiple network devices.

[0022] It should be understood that the first timing has a first timing offset relative to the second timing, including: the first timing is delayed by the first timing offset relative to the second timing, or the first timing is advanced by the first timing offset relative to the second timing.

[0023] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0024] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0025] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0026] In one possible implementation, the first time period includes at least one of the i+1th symbol to the jth symbol in the first time slot; and / or, at least one of the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0027] In a third aspect, a method for sending a signal is provided. The method may be executed by a terminal device, or may be executed by a chip or circuit configured in the terminal device, and the present application does not limit this.

[0028] The method includes: receiving first indication information sent by a first network device, the first indication information indicating a first timing offset of a first timing relative to a second timing, wherein the first timing is used to receive a first signal from the first network device, the second timing is used to receive a second signal from the first network device, the first signal is used for perception, and the second signal is used for communication; receiving a first signal from the first network device in a first time period according to the first indication information.

[0029] Through the above scheme, the network device informs the terminal device of the timing offset of the reception timing of the perception signal relative to the reception timing of the downlink communication, and the timing offset is determined according to the time required for the network device to switch from sending to receiving. Therefore, the terminal device can receive the perception signal immediately after the network device completes the conversion from sending to receiving according to the reception timing of the perception signal. Therefore, the network device does not need to reserve resources in units of symbols for the conversion from sending to receiving, which can reduce the overhead of resources reserved for the conversion of sending and receiving of the network device and improve the utilization rate of spectrum resources.

[0030] It should be understood that the first indication information indicates a first timing offset of the first timing relative to the second timing, including: the first timing is delayed relative to the second timing by the first timing offset, or the first timing is advanced relative to the second timing by the first timing offset.

[0031] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0032] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0033] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0034] In a possible implementation manner, the first indication information is used to indicate a first timing offset of the first timing relative to the second timing, including: the first indication information is used to indicate that the first timing offset is 0 or not 0.

[0035] In one possible implementation, the first time period includes at least one of the i+1th symbol to the jth symbol in the first time slot; and / or, at least one of the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0036] In a fourth aspect, a signal sending device is provided, which includes: a processing unit, used to determine a first timing, the first timing is used to send a first signal, the first timing has a first timing offset relative to the second timing, the second timing is used to send a second signal to a terminal device, the first signal is used for perception, and the second signal is used for communication; a sending unit, used to send the first signal at the first timing in a first time period.

[0037] It should be understood that the first timing has a first timing offset relative to the second timing, including: the first timing is delayed by the first timing offset relative to the second timing, or the first timing is advanced by the first timing offset relative to the second timing.

[0038] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0039] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0040] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0041] In combination with the first aspect, in certain implementations of the first aspect, the sending unit is further used to send first indication information to the terminal device, the first indication information is used to indicate the first timing offset, or the first indication information is used to indicate that the first timing offset is 0 or not 0.

[0042] In one possible implementation, the first time period includes at least one symbol from the i+1th symbol to the jth symbol in the first time slot; and / or, at least one symbol from the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0043] In a fifth aspect, a signal sending device is provided, which includes: a processing unit, used to determine a first timing, the first timing is used to receive a first signal, the first timing has a first timing offset relative to the second timing, the second timing is used to send a second signal to a terminal device, the first signal is used for perception, and the second signal is used for communication; a receiving unit, used to receive the first signal and / or the reflected signal of the first signal at the first timing in a first time period.

[0044] It should be understood that the first timing has a first timing offset relative to the second timing, including: the first timing is delayed by the first timing offset relative to the second timing, or the first timing is advanced by the first timing offset relative to the second timing.

[0045] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0046] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0047] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0048] In one possible implementation, the first time period includes at least one symbol from the i+1th symbol to the jth symbol in the first time slot; and / or, at least one symbol from the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0049] In a sixth aspect, a signal sending device is provided, the device comprising: a receiving unit, used to receive first indication information sent by a first network device, the first indication information indicating a first timing offset of a first timing relative to a second timing, wherein the first timing is used to receive a first signal from the first network device, the second timing is used to receive a second signal from the first network device, the first signal is used for perception, and the second signal is used for communication; the receiving unit is also used to receive a first signal from the first network device in a first time period according to the first indication information.

[0050] It should be understood that the first timing has a first timing offset relative to the second timing, including: the first timing is delayed by the first timing offset relative to the second timing, or the first timing is advanced by the first timing offset relative to the second timing.

[0051] In a possible implementation, the first timing is delayed relative to the second timing by a first timing offset, and the first timing offset is greater than or equal to a time length for the network device to switch from a sending mode to a receiving mode.

[0052] In another possible implementation, the first timing is advanced relative to the second timing by a first timing offset, and the first timing offset is less than or equal to a difference between a time length of one symbol and a time length for the network device to switch from a transmission mode to a reception mode;

[0053] In another possible implementation, the first timing offset is equal to half the time length of one symbol.

[0054] In one possible implementation, the first time period includes at least one symbol from the i+1th symbol to the jth symbol in the first time slot; and / or, at least one symbol from the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, where i, j and k are natural numbers.

[0055] In a possible implementation manner, the first indication information is used to indicate a first timing offset of the first timing relative to the second timing, including: the first indication information is used to indicate that the first timing offset is 0 or not 0.

[0056] In a seventh aspect, a wireless communication device is provided, comprising modules or units for executing the method in the first aspect or any possible implementation manner of the first aspect.

[0057] In an eighth aspect, a wireless communication device is provided, comprising modules or units for executing the method in the second aspect or any possible implementation manner of the second aspect.

[0058] In a ninth aspect, a wireless communication device is provided, comprising modules or units for executing the method in the third aspect or any possible implementation manner of the third aspect.

[0059] In a tenth aspect, a communication device is provided, including a processor, the processor is coupled to a memory, and can be used to execute the method in the first aspect and possible implementations thereof, the second aspect and possible implementations thereof, or the third aspect and possible implementations thereof. In a possible implementation, the communication device also includes a memory. In a possible implementation, the communication device also includes a communication interface, the processor is coupled to the communication interface. In a possible implementation, the communication device also includes a communication interface, the processor is coupled to the communication interface.

[0060] In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface may be a transceiver, or an input / output interface. In one possible implementation, the transceiver may be a transceiver circuit. In one possible implementation, the input / output interface may be an input / output circuit.

[0061] In another implementation, the communication device is a network device. When the communication device is a network device, the communication interface may be a transceiver, or an input / output interface. In a possible implementation, the transceiver may be a transceiver circuit. In a possible implementation, the input / output interface may be an input / output circuit.

[0062] In another implementation, the communication device is a chip or a chip system. When the communication device is a chip or a chip system, the communication interface may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip or the chip system. The processor may also be embodied as a processing circuit or a logic circuit.

[0063] In an eleventh aspect, a communication device is provided, comprising: an input circuit, an output circuit and a processing circuit. The processing circuit is used to receive a signal through the input circuit and transmit a signal through the output circuit, so that any of the first to third aspects and any possible implementation of the above aspects are implemented.

[0064] In the specific implementation process, the above-mentioned communication device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be different circuits or the same circuit. In this case, the circuit is used as an input circuit and an output circuit at different times. The embodiment of the present application does not limit the specific implementation method of the processor and various circuits.

[0065] In a twelfth aspect, a processing device is provided, comprising a processor and a memory. The processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute any one of the first to third aspects, and any possible implementation of the above aspects.

[0066] In a possible implementation, there are one or more processors and one or more memories.

[0067] In a possible implementation, the memory may be integrated with the processor, or the memory may be separately provided with the processor.

[0068] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or can be set on different chips respectively. The embodiments of the present application do not limit the type of memory and the setting method of the memory and the processor.

[0069] It should be understood that the relevant data interaction process, such as sending indication information, can be a process of outputting indication information from a processor, and receiving capability information can be a process of receiving input capability information from a processor. Specifically, the processed output data can be output to a transmitter, and the input data received by the processor can come from a receiver. Among them, the transmitter and the receiver can be collectively referred to as a transceiver.

[0070] The processor in the above aspects can be a chip, which can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading software codes stored in a memory. The memory can be integrated in the processor or can be located outside the processor and exist independently.

[0071] In the thirteenth aspect, a computer program product is provided, which includes: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute any one of the first to third aspects, and a method in any possible implementation of the above aspects.

[0072] In the fourteenth aspect, a computer-readable medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer-readable medium is run on a computer, the computer executes any one of the first to third aspects above, as well as a method in any possible implementation of the above aspects.

[0073] In the fifteenth aspect, a chip system is provided, including a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a communication device equipped with the chip system executes any aspect of the first to third aspects above and the methods in their possible implementation methods.

[0074] Among them, the chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0075] In the sixteenth aspect, a communication system is provided, comprising at least one of the aforementioned first network device, second network device and terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 It is a schematic diagram of the time domain position of a perception symbol according to an embodiment of the present application.

[0077] Figure 2 This is a schematic diagram of an example of a communication system to which the present application is applicable.

[0078] Figure 3 This is a schematic diagram of an example of a scenario to which the present application is applicable.

[0079] Figure 4 It is a schematic flowchart of a signal sending method provided in an embodiment of the present application.

[0080] Figure 5 It is a schematic diagram of the time domain position of a perception symbol provided in an embodiment of the present application.

[0081] Figure 6 It is a schematic diagram of another method of perceiving the time domain position of a symbol provided in an embodiment of the present application.

[0082] Figure 7 This is a schematic diagram of another time domain position of a perception symbol provided in an embodiment of the present application.

[0083] Figure 8 This is a schematic diagram of another time domain position of a perception symbol provided in an embodiment of the present application.

[0084] Fig. 9 This is a schematic diagram of another time domain position of a perception symbol provided in an embodiment of the present application.

[0085] Fig.10 This is a schematic diagram of another time domain position of a perception symbol provided in an embodiment of the present application.

[0086] Fig.11 A schematic flowchart of another signal sending method provided in an embodiment of the present application.

[0087] Fig.12 A schematic diagram of another method of perceiving the time domain position of a symbol provided in an embodiment of the present application.

[0088] Fig.13 A schematic block diagram of a communication device provided in an embodiment of the present application.

[0089] Fig.14 A schematic block diagram of a communication device provided in an embodiment of the present application.

[0090] Fig.15 A schematic block diagram of a chip system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0091] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0092] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Wireless Fidelity (WIFI), Device to Device (D2D) communication system, Vehicle-to-Everything (V2X) communication system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Machine to Machine (M2M) system, Machine Type Communication (MTC) system, Internet of Things (IoT) system. things, IoT) communication system, non-terrestrial network (NTN) system, the 5th Generation (5G) system, the 6th generation (6G) system or new wireless (NR) system or future wireless communication system.

[0093] First, a brief introduction to the network architecture applicable to this application is given.

[0094] like Figure 2As shown, the communication system may include at least one network device, such as Figure 2 The communication system may also include at least one terminal device, such as Figure 2 The terminal device shown. The network device and the terminal device can communicate via a wireless link. In the communication system, the network device and the terminal device can use air interface resources for wireless communication, and the air interface resources may include at least one of time domain resources, frequency domain resources, code resources and space resources.

[0095] It should be understood that Figure 2 This is a simplified schematic diagram for ease of understanding only. The communication system may also include other network devices or other terminal devices. Figure 2 Not drawn in.

[0096] The terminal device in the embodiment of the present application is used to send an uplink signal to a network device, or receive a downlink signal from a network device. The terminal device may refer to a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved Public Land Mobile Network (Public Land Mobile Network, PLMN), etc., and the embodiment of the present application is not limited to this.

[0097] Among them, wearable devices can also be called wearable smart devices, which are a general term for the intelligent design and development of wearable devices for daily wear using wearable technology, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0098] In addition, the terminal device can also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.

[0099] It should be understood that the present application does not limit the specific form of the terminal device.

[0100] The network device in the embodiment of the present application can also be a device for communicating with a terminal device, mainly used to receive an uplink signal from a terminal device, or to send a downlink signal to a terminal device. The network device can be a base station (Base Transceiver Station, BTS) in a Global System of Mobile communication (GSM) system or a Code Division Multiple Access (CDMA), or a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolved NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the communication device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a communication device in a 5G network, or a communication device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

[0101] It should be understood that the network device in the wireless communication system can be any device with wireless transceiver function. The device includes, but is not limited to: an evolved Node B (eNB), a radio network controller (RNC), a road side unit (RSU), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc. It can also be a gNB or a transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DBU). The network device can also be a network-side device that provides communication services or communication control for terminal devices in the Internet of Vehicles.

[0102] The network device provides communication services for the terminal devices in the cell. The terminal devices in the cell communicate with the network device through the transmission resources allocated by the network device (for example, frequency domain resources, time domain resources, etc.). The cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.).

[0103] In a wireless communication system, communications can be divided into different types according to the types of sending nodes and receiving nodes. Usually, sending information from a network device to a terminal device is called downlink communication, and sending information from a terminal device to a network device is called uplink communication. In the Long Term Evolution (LTE) / Long Term Evolution Advanced (LTE-A) communication system and the New RAT (NR) system, communications can be mainly divided into Frequency Division Duplex (FDD) mode and Time Division Duplex (TDD) mode according to the different duplex modes. For a wireless communication system operating in TDD mode, the downlink carrier and uplink carrier of the system are carriers of the same carrier frequency. The multiple access method usually adopts the Orthogonal Frequency Division Multiplexing Access (OFDMA) method. The main feature of OFDMA is that the transmission resources are divided into mutually orthogonal time-frequency resource elements (REs). The signals sent by the transmitter are carried on REs and transmitted to the receiver. Since different REs are orthogonal to each other, the receiver can receive the signals sent on each RE separately.

[0104] Communication and perception integration technology is considered to be one of the key technologies that can expand the business capabilities of mobile communication networks. The core idea of ​​this technology is to add perception capabilities to mobile communication networks and build the ability to detect, track and image targets, so that communication and perception capabilities can be integrated into one network to achieve harmonious coexistence and even mutual benefit.

[0105] The technical principle of perception is somewhat different from that of communication. In communication, the transmitter modulates information on radio waves and sends it to the receiver, which then demodulates the signal carried on the radio waves to obtain the information. However, perception requires the transmitter to send radio waves in a specific direction. When the radio waves hit the surface of the target, reflected radio waves are formed. The receiver then receives and processes the reflected radio waves to obtain information such as the target's location, speed, and type.

[0106] Perception can usually be divided into two types based on the mode: single-station perception and dual-station perception. In single-station perception, the transmitter and receiver of the perception signal are the same device. From the perspective of the perception signal process, the perception site must both send the perception signal and receive the signal reflected by the target surface. Therefore, the single-station perception mode is also called the self-transmitting and self-receiving mode. For dual-station perception, the transmitter and receiver of the perception signal are two different devices. From the perspective of the perception signal process, after the perception site A sends the perception signal, the signal reflected by the target surface is received by the perception site B. Therefore, the dual-station perception mode is also called the A-transmitting and B-receiving mode.

[0107] To facilitate understanding of the embodiments of the present application, the terms involved in the present application are first briefly explained.

[0108] 1. Timing

[0109] The timing used for signal transmission can usually be understood as an absolute moment. When the terminal device sends an uplink signal, the terminal device needs to determine the start time of the wireless frame used for downlink reception based on the received synchronization signal, wherein the start time of the wireless frame used for downlink reception can be used as a reference point, and then the start time of the wireless frame used for uplink transmission is determined based on the start time of the wireless frame. At this time, the start time of the wireless frame used for uplink transmission can be regarded as a timing, and the timing is an absolute moment. Afterwards, the terminal device sends the uplink signal according to the timing.

[0110] Timing can be understood as a time point, or in other words, a timing can include multiple time points (multiple moments). If the multiple moments include at least three moments, the at least three moments are arranged at equal intervals. For example, assuming that the start time of the wireless frame used by the terminal device for downlink reception is used as the reference time, recorded as 0 milliseconds (ms), and the length of a wireless frame is recorded as 10ms, the timing of the wireless frame used by the terminal device for downlink reception may include 0ms, 10ms, 20ms, ..., multiple moments, that is, the terminal device can receive downlink signals in all or part of the multiple time points of 0ms, 10ms, 20ms, .... The start time of the wireless frame used by the terminal device for uplink transmission is x ms ahead of the start time of the wireless frame used for downlink reception, and the timing of the terminal device for uplink transmission may include (0-x)ms, (10-x)ms, (20-x)ms, ..., multiple moments. The multiple moments may also be arranged at unequal intervals.

[0111] 2. Subcarrier

[0112] In the OFDM system, the frequency domain resources are divided into several sub-resources, each of which is called a sub-carrier. A sub-carrier can also be understood as the minimum granularity of frequency domain resources.

[0113] 3. Subcarrier spacing

[0114] In an OFDM system, the spacing between the center positions or peak positions of two adjacent subcarriers in the frequency domain. For example, the subcarrier spacing in an LTE system is 15kHz, and the subcarrier spacing in a 5G NR system can be 15kHz, 30kHz, 60kHz, or 120kHz, etc.

[0115] 4. Resource Block

[0116] N consecutive subcarriers in the frequency domain can be called a resource block. For example, a resource block in the LTE system includes 12 subcarriers, and a resource block in the NR system in 5G also includes 12 subcarriers. As the communication system evolves, the number of subcarriers included in a resource block can also be other values.

[0117] 5. Slot

[0118] A time slot is a period of time divided within a certain time range for transmitting data or control information. The role of a time slot is to improve the bandwidth utilization and transmission efficiency of the communication system, reduce the delay and conflict of the communication system, and ensure the reliability and stability of the communication system. In the 5G NR system, a time slot includes 14 OFDM symbols. The time slot length corresponding to a 15kHz subcarrier spacing is 1ms, and the time slot length corresponding to a 30kHz subcarrier spacing is 0.5ms.

[0119] 6. Subframe

[0120] Subframe is a concept in wireless communication, which refers to a period of time in a time slot. Each subframe consists of multiple symbols. The number of symbols in each subframe can vary depending on the subframe type and the configuration of the LTE system. The time length of a subframe in the 5G NR system is 1ms.

[0121] 7. OFDM symbol

[0122] The smallest time unit in the time domain in an OFDM system.

[0123] 8. Time-frequency resource unit

[0124] The smallest resource granularity in the OFDM system is an OFDM symbol in the time domain and a subcarrier in the frequency domain.

[0125] The application scenario of this application is the integrated communication and perception scenario, which can include the following from the perspective of perception mode: Figure 3The 6 sub-scenarios shown. The main application scenarios of this application are two sub-scenarios: base station A sends and B receives, and base station sends and UE receives. Among them, the perceived targets include vehicles, low-altitude drones, pedestrians, etc., as well as other moving or stationary objects. At the same time, the perceived target can also be a UE with communication function. This application does not limit the type of perceived target.

[0126] For the sensing mode of base station A sending and base station B receiving, base station B needs a certain switching time, usually 10 microseconds, when switching from downlink communication mode to sensing reception mode. In the prior art, a symbol is reserved for the base station to complete the switching, such as Figure 1 As shown, the blank symbol marked as GAP1 is reserved for the transition time from sending to receiving of base station B (perceiving receiving station), and the symbol time length of 1 subcarrier interval of 30kHz is about 33 microseconds; the blank symbol marked as GAP2 is reserved for the transition time from sending to receiving of base station A (perceiving sending station).

[0127] The granularity of the time resources reserved for the base station's transition from sending to receiving is in units of one symbol, that is, the base station needs at least one symbol to complete each transition from sending to receiving. In fact, the time it takes for the base station to complete a transition from sending to receiving is less than the duration of one symbol, which greatly reduces the amount of resources used for communication or perception, resulting in reduced spectrum utilization.

[0128] In order to solve the above problems, the present application provides a variety of methods to make the time of sending the perception signal have a time offset relative to the end time of the downlink communication. The time offset is determined based on the time required for the base station to switch from sending to receiving, and does not need to be based on a symbol. This can reduce the overhead of resources reserved for the base station's sending and receiving conversion and improve the utilization of spectrum resources.

[0129] It should be understood that the description of the specific scenarios in the embodiments of the present application is only an example. In addition to being applicable to the application scenarios described above, the methods provided in the embodiments of the present application are also applicable to application scenarios with similar problems.

[0130] In the description of the embodiments of the present application, for the number of nouns, unless otherwise specified, it means "singular noun or plural noun", that is, "one or more". Unless otherwise specified, "multiple" or "multiple" means two or more. In addition, "at least one" can be replaced by "one or more". "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists 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. For example, A / B means: A or B. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c can be single or multiple.

[0131] The ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority or importance of multiple objects. For example, the first indication information and the second indication information can be the same information or different information, and this name does not indicate the difference in the content, size, application scenario, sender / receiver, priority or importance of the two messages. In addition, the numbering of the steps in the various embodiments introduced in this application is only to distinguish different steps, and is not used to limit the order of the steps. For example, S410 may occur before S420, or may occur after S420, or may occur at the same time as S420.

[0132] The technical solution provided in the embodiment of the present application can be applied to wireless communication between communication devices. Wireless communication between communication devices may include: wireless communication between network devices and terminals, wireless communication between network devices and network devices, and wireless communication between terminals. In the embodiment of the present application, the term "wireless communication" may also be referred to as "communication", and the term "communication" may also be described as "data transmission", "information transmission" or "transmission".

[0133] It should be understood that the names of all nodes and messages in this application are merely names set for the convenience of description in this application. The names in the actual network may be different. This application should not be understood to limit the names of various nodes and messages. On the contrary, any name that has the same or similar function as the node or message used in this application is regarded as the method of this application or an equivalent replacement, and is within the scope of protection of this application, and will not be repeated below.

[0134] The various communication methods provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0135] It should be understood that the step numbers in the embodiments of the present application are only used for illustration and do not limit the order in which the steps occur.

[0136] Figure 4 A communication method 400 provided by the present application is shown, by which the sending timing of the perception signal is determined. Figure 4 The method includes at least part of the following contents.

[0137] S410: Base station A (ie, an example of a first network device) determines a sending timing of a perception signal (ie, an example of a first timing).

[0138] S420, base station B (ie, an example of the second network device) determines a reception timing of the perception signal (ie, an example of the first timing).

[0139] S430, base station A sends a perception signal according to the sending timing of the perception signal.

[0140] S440, base station B receives the perception signal according to the reception timing of the perception signal.

[0141] The following is a detailed introduction to S410 to S440.

[0142] In S410, base station A determines a sending timing of a perception signal.

[0143] In S420, base station B determines the reception timing of the perception signal.

[0144] Specifically, base station A and / or base station B needs to determine the time domain position of the symbol where the perception signal is sent and the corresponding timing offset.

[0145] It should be understood that, as the receiver of the perception signal, base station B needs to be aligned with base station A, i.e., the sender of the perception signal, in order to receive the signal. Therefore, the frame structure determined by base station B is the same as the frame structure determined by base station A. In addition, the reception timing of the perception signal determined by base station B is delayed by a timing offset compared to the sending timing of the perception signal determined by base station A. The timing offset is the timing advance of the signal sent by base station A to base station B.

[0146] First, base station A and / or base station B needs to determine the time domain position of the sensing symbol, and the position may be pre-configured, or determined by base station A and / or base station B according to a requirement for sending a sensing signal.

[0147] Exemplarily, several configurations of perception symbols are given below. Assuming that a time slot includes 14 symbols, it should be understood that the number of symbols included in the time slot is only an example, and the number of symbols can also be other values, such as 12, 15, etc., which is not limited in this application. The configurations of these several perception symbols are applicable to both base station A and base station B.

[0148] Example 1

[0149] like Figure 5 As shown, it is a schematic diagram of the time domain position of a perception symbol.

[0150] The sensing symbol is located on the symbol numbered 9 in the time slot, and the remaining symbols are: symbols 0 to 7 are downlink communication symbols, 8, 10, and 11 are reserved symbols (ie, GAP), and 12 and 13 are uplink communication symbols.

[0151] For base station A, base station A sends downlink communication signals on symbols 0 to 7, waits for base station B to complete the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 8, then sends a perception signal on symbol 9, and completes the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0152] For base station B, base station B sends downlink communication signals on symbols 0 to 7, completes the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 8, then receives the perception signal on symbol 9, and waits for base station A to complete the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0153] Example 2

[0154] Figure 6 A schematic diagram of another time domain position of perception symbols.

[0155] The sensing symbol is located on the symbol numbered 11 in the time slot, and the remaining symbols are: symbols 0 to 9 are downlink communication symbols, and 10, 12 and 13 are reserved symbols.

[0156] It should be noted that Figure 6 Examples with Figure 5 The difference is that the time slot where the sensing symbol is located may not have an uplink symbol.

[0157] For base station A, base station A sends downlink communication signals on symbols 0 to 9, waits for base station B to complete the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 10, then sends a perception signal on symbol 11, and completes the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 12 and 13.

[0158] For base station B, base station B sends downlink communication signals on symbols 0 to 9, completes the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 10, then receives the perception signal on symbol 11, and waits for base station A to complete the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 12 and 13.

[0159] Example 3

[0160] Figure 7 A schematic diagram of the time domain position of another perception symbol.

[0161] In the embodiment of the present application, the number of perception symbols in a time slot is not limited to 1, and may be 2 or 3 or even more.

[0162] like Figure 7 As shown, the sensing symbols are located on symbols numbered 8 and 9 in the time slot, and the remaining symbols are: 0 to 6 are downlink communication symbols, 7, 10 and 11 are reserved symbols, and 12 and 13 are uplink communication symbols.

[0163] It should be noted that the perception symbols numbered 8 and 9 can be used for one base station to send a signal, or can be used for two base stations to send a perception signal. For example, base station 1 sends a perception signal on the symbol numbered 8, and base station 2 sends a perception signal on the symbol numbered 9. This application does not limit this.

[0164] For base station A, base station A sends downlink communication signals on symbols 0 to 6, waits for base station B to complete the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 7, then sends perception signals on symbols 8 and 9, and completes the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0165] For base station B, base station B sends downlink communication signals on symbols 0 to 6, completes the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 7, then receives perception signals on symbols 8 and 9, and waits for base station A to complete the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0166] Example 4

[0167] Figure 8 A schematic diagram of the time domain position of another perception symbol.

[0168] The sensing symbols are located on symbols numbered 7, 8 and 9 in the time slot, and the remaining symbols are: 0 to 5 downlink communication symbols, 6, 10 and 11 are reserved symbols, and 12 and 13 are uplink communication symbols.

[0169] Among them, the three perception symbols numbered 7, 8 and 9 can be used for three base stations to send perception signals, or can be used for one or two base stations to send perception signals, which is not limited here.

[0170] For base station A, base station A sends downlink communication signals on symbols 0 to 5, waits for base station B to complete the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 6, then sends perception signals on symbols 7, 8 and 9, and completes the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0171] For base station B, base station B sends downlink communication signals on symbols 0 to 5, completes the transition from sending to receiving (from sending downlink communication signals to receiving perception signals, or from sending mode to receiving mode) on the blank symbol GAP1 of symbol 6, then receives perception signals on symbols 7, 8 and 9, and waits for base station A to complete the transition from sending to receiving (from sending perception signals to receiving uplink communication signals, or from sending mode to receiving mode) on the blank symbol GAP2 of symbols 10 and 11, and sends uplink communication signals on symbols 12 and 13.

[0172] After determining the time domain position of the sensing symbol, the base station needs to further determine the sending or receiving timing of the sensing symbol. Considering that the sensing receiving base station needs to switch from the sending mode to the receiving mode, a certain switching time is required to complete the switching of the antenna and the RF device in this process. The switching time is usually 10 microseconds. It should be noted that the time for the base station to send and receive can also be other values, which can be greater than 10 microseconds or less than 10 microseconds, and is not limited here.

[0173] For example, the conversion time is 13 microseconds.

[0174] Regarding the above Figure 5 In the example of the time domain position of the sensing symbol in the frame structure, the base station determines that the timing of sending or receiving the sensing signal must be delayed by at least 13 microseconds compared to the symbol boundary in the frame structure, which can be specifically as follows Fig. 9 as shown in .

[0175] In a possible implementation manner, the first timing may be delayed by a first timing offset relative to the second timing.

[0176] In this case, the first timing offset is greater than or equal to the length of time it takes the base station to switch from a transmission mode to a reception mode.

[0177] Specifically, timing 1 (i.e., an example of the second timing) is the timing for base station A to send a downlink communication signal, and timing 2 (i.e., an example of the first timing) is the timing for base station A to send a perception signal or base station B to receive a perception signal. When timing 1 is used as the benchmark for the second timing, timing 2 is delayed by 13 microseconds compared to timing 1 (the 13 microseconds delay of timing 2 compared to timing 1 is an example of the first timing offset). The base station can complete the transition from sending to receiving in the time between timing 1 and timing 2, and send or receive a perception signal at timing 2.

[0178] The above scheme overcomes the problem in the prior art that the base station needs at least one symbol to switch from the sending mode to the receiving mode. After the base station switches from the sending mode to the receiving mode, there is no need to wait for the end of the symbol before sending or receiving the perception signal. The symbol GAP originally used to complete the switching of the base station from sending to receiving can be used for communication, thereby improving the utilization rate of spectrum resources.

[0179] The above solution uses timing 1 as the reference of the second timing. The present application can also use timing 1' as the reference of the second timing.

[0180] In another possible implementation manner, the first timing may be advanced relative to the second timing by a first timing offset.

[0181] When timing 1' (i.e., an example of the second timing) is used as the reference of the second timing, timing 2 is advanced by a first time length compared to timing 1', and the first time length is less than or equal to the difference of the time length of one symbol minus 13 microseconds (the first time length that timing 2 is advanced compared to timing 1' is an example of the first timing offset), and the base station can complete the conversion from sending to receiving between timing 1 and timing 2, and send or receive the perception signal at timing 2.

[0182] In another possible implementation manner, no matter whether the first timing is advanced or delayed relative to the second timing, the first timing offset is equal to half the time length of one symbol.

[0183] against Figure 5 In the example, the base station uses a total of 4 symbols to complete the conversion from sending to receiving and sending or receiving the perception signal. However, through the above method, only 3 symbols are used to complete the same action, which reduces the overhead of resources reserved for the base station's sending and receiving conversion and improves the utilization rate of spectrum resources.

[0184] Again, the above Figure 7 Taking the time domain position of the perception symbol in the frame as an example, the base station determines that the timing of sending the perception signal is also delayed by 13 microseconds compared to the symbol boundary in the frame structure, which can be specifically as follows Fig.10 As shown, the scheme can refer to Fig. 9 Description of the scenario.

[0185] Among them, timing 1 and timing 1' are the timings for base station A to send downlink signals, timing 2 is the timing for base station A to send perception signals or base station B to receive perception signals, and the timings of perception signals sent at symbol positions numbered 8 and 9 are delayed relative to timing 1 or advanced relative to timing 1', thereby ensuring that the timings of perception symbols carried on multiple consecutive symbols are continuous.

[0186] It should be understood that in an embodiment of the present application, base station A uses a timing to send a perception signal with a preset first time offset (denoted as TD-offset) compared to the sending timing of the downlink communication, and the TD-offset is less than the time length corresponding to 1 symbol.

[0187] Optionally, the TD-offset may be determined according to the time required for the receiving end base station to switch from sending to receiving.

[0188] In the embodiment of the present application, due to the delay of base station A sending a signal to base station B, the first timing of base station B is not completely aligned in time with the first timing of base station A, and the timing advance (referred to as TA-offset) of base station A sending a signal to base station B also needs to be considered.

[0189] It should be understood that, for base station B, the timing of receiving the perception signal relative to the sending timing of the downlink communication of base station A requires an additional time offset of TA-offset in addition to the first time offset.

[0190] In S430, base station A sends the perception signal according to the sending timing of the perception signal.

[0191] Specifically, Fig. 9 For example, base station A ends the downlink communication mode at timing 1.

[0192] Base station A sends a perception signal in the first time period, and the start time of sending the perception signal is timing 2.

[0193] It should be understood that the first time period includes Fig. 9 At least one symbol from the 9th symbol to the 11th symbol in the time slot shown; and / or, at least one symbol from the first 8 symbols in the first time slot is used for downlink communication; and / or, the last 3 symbols of the first time slot are used for uplink communication.

[0194] In S440, base station B receives the perception signal according to the reception timing.

[0195] Specifically, Fig. 9 For example, after base station B ends the downlink communication mode at timing 1, base station B receives the first signal and / or the reflected signal of the first signal at timing 2 in the first time period.

[0196] In the perception scenario where base station A sends and base station B receives, there may also be a terminal device that needs to receive the perception signal sent by base station A. In this case, the base station needs to inform the terminal device of the timing offset of the determined sending timing of the perception signal relative to the downlink communication timing.

[0197] Fig.11 A communication method 500 provided by the present application is shown, by which the sending and receiving timing of the perception signal is determined. Fig.11 The method includes at least part of the following contents.

[0198] S510: Base station A (ie, an example of a first network device) determines a sending timing of a perception signal (ie, an example of a first timing).

[0199] S520: Base station B (ie, an example of the second network device) determines a reception timing of the perception signal (ie, an example of the first timing).

[0200] S530, base station A sends first indication information to the UE, where the first indication information is used to indicate the offset TD-Offset (i.e., an example of the first timing offset) of the reception timing of the UE-perceived signal (i.e., an example of the first timing) relative to the reception timing of the downlink communication signal (i.e., an example of the second timing).

[0201] S540: The UE determines a reception timing of the perception signal according to the first indication information.

[0202] S550, base station A sends a perception signal according to the sending timing of the perception signal.

[0203] S560, base station B receives the perception signal according to the reception timing of the perception signal.

[0204] S570: The UE receives the perception signal according to the reception timing of the perception signal.

[0205] The following is a detailed introduction to S510 to S570.

[0206] Among them, steps S510 , S520 , S550 and S560 may refer to steps S410 to S440 in method 400 .

[0207] In S530, base station A sends first indication information to the UE, where the first indication information is used to instruct the UE to perceive an offset of a reception timing of a signal relative to a reception timing of a downlink communication signal.

[0208] The first indication information is used to indicate the timing offset TD-Offset of the reception timing of the UE-perceived signal relative to the reception timing of the downlink communication signal.

[0209] like Fig.12 As shown, the timing at which the UE receives the downlink communication signal from the base station is timing 1, which can be determined by the UE by receiving the synchronization signal sent by the base station; the timing at which the UE receives the perception signal from the base station is timing 2, which is delayed by the TD-Offset time compared to timing 1.

[0210] The first indication information can be carried in static, semi-static or dynamic signaling and sent by the base station to the UE. The static method means that the base station pre-sets the sending time, which is directly used after configuration and cannot be changed. The semi-static method can be sending TD-Offset through high-level signaling or broadcast messages or through high-level signaling such as Media Access Control (MAC) layer signaling or Radio Resource Control (RRC) layer; the dynamic method can be sent by the base station through physical layer signaling, that is, carried in downlink control information (DCI).

[0211] One implementation method of configuring TD-Offset through static signaling is to predefine the relationship between TD-Offset and a parameter in the communication system. Once the parameter is determined, the value of TD-Offset is also determined accordingly. Considering that the base station's transceiver switching time is associated with the frequency band it is in, for example, in the frequency band below 6GHz, the switching time is 13 microseconds, while in the frequency band above 6GHz, the switching time can be reduced to 7 microseconds. Once the frequency band of the communication system is determined, the value of TD-Offset is also determined accordingly.

[0212] An implementation method of semi-static signaling configuration of TD-Offset is to notify the value of TD-Offset through a signaling field, and the signaling field can directly carry the specific value of TD-Offset, such as expressed by an integer, such as 7 (microseconds), 10 (microseconds) or 13 (microseconds).

[0213] An implementation method of dynamically configuring TD-Offset by signaling is to use a state value corresponding to several TD-Offset candidate values. For example, the field contains two states, state 1 corresponds to 10 microseconds, and state 2 corresponds to 13 microseconds, so that only 1 bit is needed to indicate TD-Offset.

[0214] In S540, the UE determines a reception timing of the perception signal according to the first indication information.

[0215] In one possible implementation, the UE determines the TD-Offset based on the frequency band information of the carrier configured by the base station for communication. When the UE determines that the frequency band of the carrier is the first frequency band, such as below 6 GHz, the TD-Offset is determined to be a first value, such as 13 microseconds; when the UE determines that the frequency band of the carrier is the second frequency band, such as above 6 GHz, the TD-Offset is determined to be a second value, such as 7 microseconds.

[0216] In another possible implementation manner, the UE determines the value of TD-Offset according to signaling sent by the base station.

[0217] After determining the value of TD-Offset, the UE determines the reception timing of the perception signal according to the reception timing of the downlink communication.

[0218] In S570, the UE receives the perception signal according to the reception timing.

[0219] Specifically, the UE receives a downlink communication signal before timing 1, and the UE receives a perception signal at timing 2.

[0220] Fig.13is a schematic block diagram of a communication device 900 provided in an embodiment of the present application. The device 900 includes a transceiver unit 910 and a processing unit 920. The transceiver unit 910 can communicate with the outside, and the processing unit 920 is used for data processing. The transceiver unit 910 can also be called a communication interface or a communication unit.

[0221] In a possible implementation, the device 900 may further include a storage unit, which may be used to store instructions and / or data, and the processing unit 920 may read the instructions and / or data in the storage unit.

[0222] The device 900 can be used to execute the actions performed by the network device in the above method embodiment. In this case, the device 900 can be a network device, or a component that can be configured in a network device. The transceiver unit 910 is used to execute the transceiver-related operations of the network device in the above method embodiment, and the processing unit 920 is used to execute the processing-related operations of the network device in the above method embodiment.

[0223] Alternatively, the device 900 can be used to execute the actions performed by the terminal device in the above method embodiment. In this case, the device 900 can be a terminal device or a component that can be configured on the terminal device, the transceiver unit 910 is used to execute the transceiver related operations on the terminal device side in the above method embodiment, and the processing unit 920 is used to execute the processing related operations on the terminal device side in the above method embodiment.

[0224] It should also be understood that the device 900 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit, and / or other suitable components that support the described functions. In an optional example, those skilled in the art may understand that the device 900 may be specifically a network device or a terminal device in the above-mentioned embodiment, which may be used to execute each process and / or step corresponding to the network device or the terminal device in the above-mentioned method embodiments, or the device 900 may be specifically a network device or a terminal device in the above-mentioned embodiment, which may be used to execute each process and / or step corresponding to the network device or the terminal device in the above-mentioned method embodiments, and to avoid repetition, it will not be repeated here.

[0225] The device 900 of each of the above schemes has the function of implementing the corresponding steps performed by the network device or terminal device in the above method. The function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, respectively performing the transceiver operations and related processing operations in each method embodiment.

[0226] In addition, the transceiver unit 910 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

[0227] It should be pointed out that Fig.13 The device in the embodiment may be a network element or device in the foregoing embodiment, or may be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0228] like Fig.14 As shown, the embodiment of the present application further provides a communication device 1000. The communication device 1000 includes a processor 1010, the processor 1010 is coupled to a memory 1020, the memory 1020 is used to store computer programs or instructions or and / or data, and the processor 1010 is used to execute the computer programs or instructions and / or data stored in the memory 1020, so that the method in the above method embodiment is executed.

[0229] In a possible implementation, the communication device 1000 includes one or more processors 1010.

[0230] In one possible implementation, Figure 8 As shown, the communication device 1000 may further include a memory 1020 .

[0231] In a possible implementation, the communication device 1000 may include one or more memories 1020 .

[0232] In a possible implementation, the memory 1020 may be integrated with the processor 1010 , or be separately provided, or the processor 1020 may be outside the communication device 1000 .

[0233] In one possible implementation, Figure 8As shown, the wireless communication device 1000 may further include a transceiver 1030, and the transceiver 1030 is used for receiving and / or sending signals. For example, the processor 1010 is used to control the transceiver 1030 to receive and / or send signals.

[0234] As a solution, the communication device 1000 is used to implement the operations performed by the network device in the above method embodiment.

[0235] For example, the processor 1010 is used to implement the processing-related operations performed by the network device in the above method embodiment, and the transceiver 1030 is used to implement the sending and receiving-related operations performed by the network device in the above method embodiment.

[0236] As another solution, the communication device 1000 is used to implement the operations performed by the terminal device in the above method embodiment.

[0237] For example, the processor 1010 is used to implement the processing-related operations performed by the terminal device in the above method embodiment, and the transceiver 1030 is used to implement the sending and receiving-related operations performed by the terminal device in the above method embodiment.

[0238] like Fig.15 The embodiment of the present application provides a chip system 1100. The chip system 1100 (or also referred to as a processing system) includes a logic circuit 1110 and an input / output interface 1120.

[0239] Among them, the logic circuit 1110 can be a processing circuit in the chip system 1100. The logic circuit 1110 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 1100 can implement the methods and functions of each embodiment of the present application. The input / output interface 1120 can be an input / output circuit in the chip system 1100, outputting information processed by the chip system 1100, or inputting data or signaling information to be processed into the chip system 1100 for processing.

[0240] As a solution, the chip system 1100 is used to implement the operations performed by the network device or the terminal device in the above method embodiments.

[0241] For example, the logic circuit 1110 is used to implement the processing-related operations of the network device in the above method embodiment; the input / output interface 1120 is used to implement the sending and / or receiving-related operations of the network device in the above method embodiment.

[0242] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the method executed by a terminal device or a method executed by a satellite in the above method embodiment are stored.

[0243] For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device or the method executed by the network device in the above method embodiment.

[0244] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed by a computer, enables the computer to implement the method executed by a network device or a method executed by a terminal device in the above method embodiment.

[0245] An embodiment of the present application also provides a communication system, which includes one or more of the first network device, the second network device or the terminal device in the above embodiment.

[0246] The explanation of the relevant contents and beneficial effects in any of the wireless communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0247] In an embodiment of the present application, a terminal device or a network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. Among them, the hardware layer may include hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system of the operating system layer may be any one or more computer operating systems that implement business processing through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. The application layer may include applications such as browsers, address books, word processing software, and instant messaging software.

[0248] The embodiments of the present application do not specifically limit the specific structure of the execution subject of the method provided in the embodiments of the present application, as long as it is possible to communicate according to the method provided in the embodiments of the present application by running a program that records the code of the method provided in the embodiments of the present application. For example, the execution subject of the method provided in the embodiments of the present application may be a terminal device or a satellite, or a functional module in the terminal device or the satellite that can call and execute the program.

[0249] Various aspects or features of the embodiments of the present application may be implemented as methods, devices, or products using standard programming and / or engineering techniques. The term "product" as used herein may cover a computer program accessible from any computer-readable device, carrier, or medium. For example, a computer-readable medium may include, but is not limited to: a magnetic storage device (e.g., a hard disk, a floppy disk, or a magnetic tape, etc.), an optical disk (e.g., a compact disc (CD), a digital versatile disc (DVD), etc.), a smart card, and a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a key drive, etc.).

[0250] The various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0251] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0252] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM may include the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0253] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated into the processor.

[0254] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0255] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0256] Those skilled in the art can 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.

[0257] In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0258] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0259] 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.

[0260] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program code.

[0261] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the embodiments of the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A signal transmission method, characterized in that: include: Determine a first timing, where the first timing is used to send a first signal, where the first timing has a first timing offset relative to a second timing, where the second timing is used to send a second signal to a terminal device, where the first signal is used for sensing, where the second signal is used for communication, and where the first timing offset is determined according to a length of time for the network device to switch from a sending mode to a receiving mode; The first signal is sent at the first timing in a first time period.

2. The method according to claim 1, characterized in that The first timing has a first timing offset relative to the second timing, including: The first timing is delayed relative to the second timing by the first timing offset, or the first timing is advanced relative to the second timing by the first timing offset.

3. The method according to claim 1 or 2, characterized in that: Under the condition that the first timing is delayed by the first timing offset relative to the second timing, the first timing offset is greater than or equal to the time length for the network device to switch from the sending mode to the receiving mode; Or, under the condition that the first timing is ahead of the second timing by the first timing offset, the first timing offset is less than or equal to the difference between the time length of one symbol and the time length for the network device to switch from the transmission mode to the reception mode; Alternatively, the first timing offset is equal to half the time length of one symbol.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Sending first indication information to the terminal device, where the first indication information is used to indicate the first timing offset.

5. The method according to claim 4, characterized in that The first indication information is used to indicate that the first timing offset is 0 or not 0.

6. The method according to any one of claims 1 to 5, characterized in that The first time period includes at least one symbol from the i+1th symbol to the jth symbol in the first time slot; and / or, at least one symbol among the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, wherein i, j and k are natural numbers.

7. A signal transmission method, characterized in that: include: Determine a first timing, where the first timing is used to receive a first signal, where the first timing has a first timing offset relative to a second timing, where the second timing is used to send a second signal to a terminal device, where the first signal is used for sensing, where the second signal is used for communication, and where the first timing offset is determined according to a length of time for the network device to switch from a sending mode to a receiving mode; The first signal and / or a reflected signal of the first signal is received at the first timing in a first time period.

8. The method according to claim 7, characterized in that The first timing has a first timing offset relative to the second timing, including: The first timing is delayed relative to the second timing by the first timing offset, or the first timing is advanced relative to the second timing by the first timing offset.

9. The method according to claim 7 or 8, characterized in that: Under the condition that the first timing is delayed by the first timing offset relative to the second timing, the first timing offset is greater than or equal to the time length for the network device to switch from the sending mode to the receiving mode; Or, under the condition that the first timing is ahead of the second timing by the first timing offset, the first timing offset is less than or equal to the difference between the time length of one symbol and the time length for the network device to switch from the transmission mode to the reception mode; Alternatively, the first timing offset is equal to half the time length of one symbol.

10. The method according to any one of claims 7 to 9, characterized in that: The first time period includes at least one of the i+1th symbol to the jth symbol in the first time slot; and / or, at least one of the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, wherein i, j and k are natural numbers.

11. A method for signal transmission, characterized in that: include: receiving first indication information sent by a first network device, wherein the first indication information indicates a first timing offset of a first timing relative to a second timing, wherein the first timing is used to receive a first signal from the first network device, the second timing is used to receive a second signal from the first network device, the first signal is used for sensing, the second signal is used for communication, and the first timing offset is determined according to a time length for the network device to switch from a sending mode to a receiving mode; The first signal is received from the first network device in a first time period according to the first indication information.

12. The method according to claim 11, characterized in that The first indication information indicates a first timing offset of the first timing relative to the second timing, including: The first timing is delayed relative to the second timing by the first timing offset, or the first timing is advanced relative to the second timing by the first timing offset.

13. The method according to claim 11 or 12, characterized in that: Under the condition that the first timing is delayed by the first timing offset relative to the second timing, the first timing offset is greater than or equal to the time length for the network device to switch from the sending mode to the receiving mode; Or, under the condition that the first timing is ahead of the second timing by the first timing offset, the first timing offset is less than or equal to the difference between the time length of one symbol and the time length for the network device to switch from the transmission mode to the reception mode; Alternatively, the first timing offset is equal to half the time length of one symbol.

14. The method according to any one of claims 11 to 13, characterized in that The first indication information is used to indicate a first timing offset of the first timing relative to the second timing, including: The first indication information is used to indicate that the first timing offset is 0 or not 0.

15. The method according to any one of claims 11 to 14, characterized in that: The first time period includes at least one of the i+1th symbol to the jth symbol in the first time slot; and / or, at least one of the first i symbols in the first time slot is used for downlink communication; and / or, the last k symbols of the first time slot are used for uplink communication, wherein i, j and k are natural numbers.

16. A communication device, characterized in that: include: A unit for implementing the method of any one of claims 1 to 6; or, a unit for implementing the method of any one of claims 7 to 10; or, a unit for implementing the method of any one of claims 11 to 15.

17. A computer program product, characterized in that The computer program product comprises: a computer program code, when the computer program code is executed, Execute the method according to any one of claims 1 to 6, or Execute the method according to any one of claims 7 to 10, or Execute the method of any one of claims 11 to 15.

18. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program. When the computer program is executed, The device performs the method according to any one of claims 1 to 6, or The device performs the method according to any one of claims 7 to 10, or The device is caused to perform the method as claimed in any one of claims 11 to 15.

19. A chip system, characterized in that: comprising: a processor for calling and running a computer program from a memory, Enable a communication device equipped with the chip system to perform the method according to any one of claims 1 to 6; or Enable a communication device equipped with the chip system to perform the method as claimed in any one of claims 7 to 10; or The communication device equipped with the chip system executes the method as claimed in any one of claims 11 to 15.

20. A communication system, characterized in that: It includes at least one of a first network device, a second network device and a terminal device, the first network device is used to execute the method as described in any one of claims 1 to 6, the second network device is used to execute the method as described in any one of claims 7 to 10, and the terminal device is used to execute the method as described in any one of claims 11 to 15.

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