Time calibration method, device and system

Abstract

The embodiment of the invention provides a time calibration method, device and system, and the method comprises the steps: transmitting control information to second equipment, and enabling the control information to comprise the related information of a calibration signal; sending a first calibration signal according to the related information of the calibration signal; and receiving a first measurement result sent by the second device, the first measurement result being obtained by measuring the first calibration signal by the second device, and the first measurement result being used for time calibration in sensing with the second device. According to the embodiment of the invention, the time calibration suitable for the perception service can be realized.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and particularly to a time calibration method, apparatus, and system. Background Art

[0002] Integrated communication and sensing is considered a technology with broad application prospects in the field of communication, especially in the 6G era. Its service scope will break through the traditional communication dimension, and the same device can be used to provide sensing and communication services simultaneously.

[0003] In an integrated communication and sensing system, how to achieve time calibration suitable for sensing services is a problem to be solved. Summary of the Invention

[0004] This application provides a time calibration method, apparatus, and system, which can achieve time calibration suitable for sensing services.

[0005] In a first aspect, an embodiment of this application provides a time calibration method applied to a first device. The method includes: sending control information to a second device, where the control information includes: relevant information of a calibration signal; sending a first calibration signal according to the relevant information of the calibration signal; receiving a first measurement result sent by the second device, where the first measurement result is obtained by the second device measuring the first calibration signal, and the first measurement result is used for time calibration in sensing with the second device. In this method, the first device indicates the relevant information of the calibration signal to the second device through the control information. The first device and the second device send and measure the first calibration signal according to the relevant information of the calibration signal. After that, the second device sends the first measurement result obtained by measuring the first calibration signal to the first device, so that the first device can obtain the first measurement result for time calibration when the first device and the second device perform sensing, thereby achieving time calibration suitable for sensing services.

[0006] In a possible implementation, the method further includes: measuring a second calibration signal sent by the second device according to the relevant information of the calibration signal to obtain a second measurement result; sending the second measurement result to the second device, where the second measurement result is used for time calibration in sensing with the second device.

[0007] In a possible implementation, the relevant information of the calibration signal includes the relevant information of the first calibration signal and the relevant information of the second calibration signal;

[0008] The relevant information of the first calibration signal includes at least one of the following: the transmission time slot indication of the first calibration signal, the configuration information indication of the first measurement result, the transmission time slot indication of the first measurement result, the configuration indication of the first calibration signal; and / or,

[0009] The relevant information of the second calibration signal includes at least one of the following: the transmission time slot indication of the second calibration signal, the configuration information indication of the second measurement result, the transmission time slot indication of the second measurement result, and the configuration indication of the second calibration signal.

[0010] In a possible implementation, the configuration indication of the first calibration signal includes: the configuration index number of the first calibration signal.

[0011] In a possible implementation, the configuration indication of the second calibration signal includes: the configuration index number of the second calibration signal.

[0012] In a possible implementation, the control information includes: trigger status information, and the trigger status information is used to indicate the configuration index number of the first calibration signal and the configuration index number of the second calibration signal.

[0013] In a possible implementation, the transmission time slot indication of the first calibration signal includes: a first time slot offset, and the first time slot offset is used to indicate the offset of the transmission time slot of the first calibration signal relative to the transmission time slot of the control information.

[0014] In a possible implementation, the transmission time slot indication of the second calibration signal includes: a second time slot offset, and the second time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information.

[0015] In a possible implementation, the transmission time slot indication of the second calibration signal includes: a third time slot offset, and the third time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the first calibration signal.

[0016] In a possible implementation, the step of transmitting the first calibration signal according to the relevant information of the calibration signal and the step of measuring the second calibration signal transmitted by the second device according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0017] The step of receiving the first measurement result sent by the second device and the step of sending the second measurement result to the second device are executed in the same time slot.

[0018] In a possible implementation, the step of sending control information to the second device and the step of transmitting the first calibration signal according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0019] The step of receiving the first measurement result sent by the second device and the step of sending the second measurement result to the second device are executed in the same time slot.

[0020] In a possible implementation, the step of sending control information to the second device and the step of sending the first calibration signal according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0021] The step of receiving the first measurement result sent by the second device and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are executed in the same time slot.

[0022] In a possible implementation, the step of sending the first calibration signal according to the relevant information of the calibration signal and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are executed simultaneously in the same time slot; and / or,

[0023] The step of receiving the first measurement result sent by the second device and the step of sending the second measurement result to the second device are executed simultaneously in the same time slot.

[0024] In a possible implementation, the step of sending the first calibration signal according to the relevant information of the calibration signal and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are executed in a time division multiplexing manner in the same time slot; and / or,

[0025] The step of receiving the first measurement result sent by the second device and the step of sending the second measurement result to the second device are executed simultaneously in the same time slot.

[0026] In a possible implementation, the step of sending control information to the second device and the step of sending the first calibration signal according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0027] The step of receiving the first measurement result sent by the second device and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are executed simultaneously in the same time slot.

[0028] In a possible implementation, the relevant information of the calibration signal includes: a fourth time slot offset and a fifth time slot offset;

[0029] The fourth time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information;

[0030] The fifth time slot offset is used to indicate the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the control information.

[0031] In a second aspect, an embodiment of the present application provides a time calibration method applied to a second device. The method includes: receiving control information sent by a first device, where the control information includes: relevant information of a calibration signal; measuring a first calibration signal sent by the first device according to the relevant information of the calibration signal to obtain a first measurement result; and sending the first measurement result to the first device, where the first measurement result is used for time calibration during sensing with the first device. In this method, the second device receives the relevant information of the calibration signal indicated by the first device through the control information, the second device measures the first calibration signal according to the relevant information of the calibration signal, and sends the obtained first measurement result to the first device, so that the first device and the second device can use the first measurement result for time calibration when the first device and the second device perform sensing, thereby realizing time calibration applicable to sensing services.

[0032] In a possible implementation manner, the method further includes:

[0033] sending a second calibration signal according to the relevant information of the calibration signal;

[0034] receiving a second measurement result sent by the first device, where the second measurement result is obtained by the first device measuring the second calibration signal, and the second measurement result is used for time calibration during sensing with the first device.

[0035] In a possible implementation manner, the relevant information of the calibration signal includes the relevant information of the first calibration signal and the relevant information of the second calibration signal;

[0036] The relevant information of the first calibration signal includes at least one of the following: the transmission time slot indication of the first calibration signal, the configuration information indication of the first measurement result, the transmission time slot indication of the first measurement result, the configuration indication of the first calibration signal; and / or,

[0037] The relevant information of the second calibration signal includes at least one of the following: the transmission time slot indication of the second calibration signal, the configuration information indication of the second measurement result, the transmission time slot indication of the second measurement result, the configuration indication of the second calibration signal.

[0038] In a possible implementation manner, the configuration indication of the first calibration signal includes: the configuration index number of the first calibration signal.

[0039] In a possible implementation, the configuration indication of the second calibration signal includes: the configuration index number of the second calibration signal.

[0040] In a possible implementation, the control information includes: trigger status information, and the trigger status information is used to indicate the configuration index number of the first calibration signal and the configuration index number of the second calibration signal.

[0041] In a possible implementation, the transmission time slot indication of the first calibration signal includes: a first time slot offset, and the first time slot offset is used to indicate the offset of the transmission time slot of the first calibration signal relative to the transmission time slot of the control information.

[0042] In a possible implementation, the transmission time slot indication of the second calibration signal includes: a second time slot offset, and the second time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information.

[0043] In a possible implementation, the transmission time slot indication of the second calibration signal includes: a third time slot offset, and the third time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the first calibration signal.

[0044] In a possible implementation, the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal and the step of sending the second calibration signal according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0045] The step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed in the same time slot.

[0046] In a possible implementation, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0047] The step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed in the same time slot.

[0048] In a possible implementation, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0049] The step of sending the first measurement result to the first device and the step of sending the second calibration signal according to the relevant information of the calibration signal are executed in the same time slot.

[0050] In a possible implementation, the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal and the step of sending the second calibration signal according to the relevant information of the calibration signal are executed simultaneously in the same time slot; and / or,

[0051] The step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

[0052] In a possible implementation, the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal and the step of sending the second calibration signal according to the relevant information of the calibration signal are executed in a time-division multiplexing manner in the same time slot; and / or,

[0053] The step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

[0054] In a possible implementation, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal sent by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or,

[0055] The step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

[0056] In a possible implementation, the relevant information of the calibration signal includes: a fourth time slot offset and a fifth time slot offset;

[0057] The fourth time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information;

[0058] The fifth time slot offset is used to indicate the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the control information.

[0059] In a third aspect, an embodiment of the present application provides a time calibration device, including:

[0060] A sending unit, configured to send control information to a second device, where the control information includes: relevant information of a calibration signal; and send a first calibration signal according to the relevant information of the calibration signal;

[0061] A receiving unit, configured to receive a first measurement result sent by the second device, where the first measurement result is obtained by the second device measuring a first calibration signal, and the first measurement result is used for time calibration in the perception with the second device.

[0062] In a fourth aspect, an embodiment of the present application provides a time calibration device, including:

[0063] A receiving unit, configured to receive control information sent by a first device, where the control information includes information related to a calibration signal;

[0064] A measuring unit, configured to measure a first calibration signal sent by the first device according to the information related to the calibration signal to obtain a first measurement result;

[0065] A sending unit, configured to send the first measurement result to the first device, where the first measurement result is used for time calibration in the perception with the first device.

[0066] In a fifth aspect, an embodiment of the present application provides a device, including:

[0067] A processor; a memory; one or more computer programs are stored in the memory, and the one or more computer programs include instructions, when the instructions are executed by the processor, the device is caused to execute the method according to any one of the first aspect.

[0068] In a sixth aspect, an embodiment of the present application provides a device, including:

[0069] A processor; a memory; one or more computer programs are stored in the memory, and the one or more computer programs include instructions, when the instructions are executed by the processor, the device is caused to execute the method according to any one of the second aspect.

[0070] In a seventh aspect, an embodiment of the present application provides a chip module, including the device according to the third aspect or the fourth aspect.

[0071] In an eighth aspect, an embodiment of the present application provides a time calibration system, including the device according to the fifth aspect and the device according to the sixth aspect.

[0072] In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when it runs on a computer, the computer is caused to execute the method according to any one of the first aspect or the second aspect.

[0073] In a tenth aspect, the present application provides a computer program, which is used to execute the method according to any one of the first aspect or the second aspect when the computer program is executed by a computer.

[0074] In a possible design, the program in the seventh aspect can be stored in whole or in part on a storage medium packaged together with the processor, or can be stored in part or in whole on a memory not packaged together with the processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 FIG. is a schematic diagram of a principle of a synchronization error calculation method provided by an embodiment of the present application;

[0076] Figure 2 FIG. is another schematic diagram of a principle of a synchronization error calculation method provided by an embodiment of the present application;

[0077] Figures 3A - 3C FIG. is a schematic diagram of a system framework structure applicable to a time calibration method provided by an embodiment of the present application;

[0078] Figures 4A - 4C FIG. is a schematic diagram of a principle of a time calibration method provided by an embodiment of the present application;

[0079] Figure 5A FIG. is a schematic flowchart of a time calibration method provided by an embodiment of the present application;

[0080] Figure 5B FIG. is another schematic flowchart of a time calibration method provided by an embodiment of the present application;

[0081] Figure 6A FIG. is a third schematic flowchart of a time calibration method provided by an embodiment of the present application;

[0082] Figure 6B FIG. is a schematic diagram of a slot offset 1 provided by an embodiment of the present application;

[0083] Figure 6C FIG. is a schematic diagram of a slot offset 2 provided by an embodiment of the present application;

[0084] Figure 7 FIG. is a fourth schematic flowchart of a time calibration method provided by an embodiment of the present application;

[0085] Figure 8A FIG. is a schematic diagram of the relationship between slot offset 1 and 3 provided by an embodiment of the present application;

[0086] Figure 8B FIG. is a schematic diagram of the relationship between slot offset 1 and 4 provided by an embodiment of the present application;

[0087] Figure 9 FIG. is a fifth schematic flowchart of a time calibration method provided by an embodiment of the present application;

[0088] Figure 10AThe sixth process schematic diagram of the time calibration method provided by the embodiments of this application;

[0089] Figure 10B Provided by the embodiments of this application Figure 10A An example diagram of the time calibration method shown;

[0090] Figure 11A The seventh process schematic diagram of the time calibration method provided by the embodiments of this application;

[0091] Figure 11B Provided by the embodiments of this application Figure 11A An example diagram of the time calibration method shown;

[0092] Figure 12A The eighth process schematic diagram of the time calibration method provided by the embodiments of this application;

[0093] Figure 12B Provided by the embodiments of this application Figure 12A An example diagram of the time calibration method shown;

[0094] Figure 13 An example diagram of the time calibration method provided by the embodiments of this application;

[0095] Figure 14 Another schematic diagram of the time calibration method provided by the embodiments of this application;

[0096] Figure 15 Another schematic diagram of the time calibration method provided by the embodiments of this application;

[0097] Figure 16 A structural schematic diagram of the time calibration device provided by the embodiments of this application;

[0098] Figure 17 Another structural schematic diagram of the time calibration device provided by the embodiments of this application;

[0099] Figure 18 A structural schematic diagram of the device provided by the embodiments of this application. Detailed implementation manners

[0100] The terms used in the embodiments part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application.

[0101] In communication services, the synchronization error can be calculated or eliminated through round-trip measurement or reference path methods to achieve time calibration.

[0102] In one embodiment, the synchronization error can be calculated by transmitting and receiving signals multiple times. As Figure 1 shown, the base station 1 transmits a calibration signal, and the base station 2 measures the calibration signal transmitted by the base station 1 to calculate the path delay L1: L1 = T1 + ΔT, where T1 is the actual path delay and ΔT is the synchronization error; the base station 2 transmits a calibration signal, and the base station 1 measures the calibration signal transmitted by the base station 2 to calculate the path delay L2: L2 = T2 - ΔT, where T2 is the actual path delay; based on the path delays L1 and L2, calculate the path delay L: This method is simple to implement and does not require the assistance of other devices. However, due to the need to transmit and receive signals multiple times, the overhead is relatively large.

[0103] In another embodiment, the synchronization error can be measured by the difference in delay between the reflection path and the reference path. As Figure 2 shown, first measure the delay of the reference path L1 = T1 + ΔT and the delay of the reflection path L2 = T2 + ΔT, then calculate the time difference ΔL based on the above two delays: ΔL = T1 - T2, and further calculate the synchronization error: L2 = T1 + ΔL. This method does not require multiple transmissions and receptions of signals, but may introduce additional errors, resulting in relatively poor accuracy.

[0104] The above time calibration method is only applicable to communication services and not to sensing services. In cooperative sensing, there is also a synchronization error that requires time calibration. How to achieve time calibration in sensing services is a problem that needs to be solved.

[0105] Therefore, the present application provides a time calibration method, apparatus, and system that can be applicable to sensing services and achieve time calibration in sensing services.

[0106] In some embodiments, as Figure 3A shown, the time calibration method provided by the embodiments of the present application can be applicable to complete time calibration between a network-side device and a terminal device, and achieve time synchronization between the network-side device and the terminal device.

[0107] In some embodiments, as Figure 3B shown, the time calibration method provided by the embodiments of the present application can be applicable to complete time calibration between two network-side devices (such as Figure 3B network-side device 1 and network-side device 2 in

[0108] In some embodiments, as Figure 3C shown, the time calibration method provided by the embodiments of the present application can be applicable to complete time calibration between two terminal devices (such as Figure 3CTime calibration is completed between the terminal device 1 and the terminal device 2), realizing time synchronization between the terminal devices.

[0109] The network-side device in the embodiment of the present application may include but is not limited to: various forms of base stations, such as: macro base stations, micro base stations (also known as small stations), relay stations, access points, 5G base stations or future base stations, satellites, etc.

[0110] The terminal device may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile platform, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (PLMN), etc. Terminal devices represented by satellite phones and vehicle-mounted satellite systems can communicate directly with satellites. Fixed terminals represented by ground communication stations can communicate with satellites after being relayed by ground stations.

[0111] First, through Figures 4A - 4C An exemplary description is given of the principle of the time calibration method in the embodiment of the present application. Taking the communication between device A and device B as an example. Device A and device B can be respectively Figure 3A the network-side device and the terminal device in; or, device A and device B can be respectively Figure 3B the network-side device in; or, device A and device B can be respectively Figure 3C the terminal device in.

[0112] As Figure 4A shown, when device A sends a signal to device B, there is a synchronization error and a path delay caused by signal transmission between device A and device B. Therefore, the delay L1 of device B = synchronization error + path delay;

[0113] As Figure 4B shown, when device B sends a signal to device A, there is a synchronization error and a path delay caused by signal transmission between device B and device A. When the path delay is greater than the synchronization error, the delay L2 from device B to device A = path delay - synchronization error; or, as Figure 4CAs shown, when the path delay is less than the synchronization error, the delay L2 from device B to device A = synchronization error - path delay.

[0114] Through the time calibration method of the embodiments of the present application, device A and device B can respectively send calibration signals to the opposite end. By measuring the calibration signals, device B can calculate the delay L1 from device A to device B and synchronize it to device A, and device A can calculate the delay L2 from device B to device A and synchronize it to device B. Thus, device A and device B can calculate the path delay in device A and device B according to the delays L1 and L2, and complete the time calibration in the collaborative perception process between device A and device B.

[0115] Figure 5A It is a schematic flowchart of a time calibration method provided by the embodiments of the present application. This method can be executed by a first device, and the first device can be Figure 3A a network-side device in Figure 3B any network-side device in Figure 3C or any terminal device in Figure 5A As shown, this method can include:

[0116] Step 401: The first device sends control information to the second device, and the control information includes: information related to the calibration signal;

[0117] Step 402: The first device sends a first calibration signal according to the information related to the calibration signal;

[0118] Step 403: The first device receives a first measurement result sent by the second device. The first measurement result is obtained by the second device measuring the first calibration signal, and the first measurement result is used for time calibration in the perception with the second device.

[0119] Optionally, this method can further include:

[0120] Measuring a second calibration signal sent by the second device according to the information related to the calibration signal to obtain a second measurement result;

[0121] Sending the second measurement result to the second device, and the second measurement result is used for time calibration in the perception with the second device.

[0122] Optionally, the information related to the calibration signal is information associated with the calibration signal, and can include the information related to the first calibration signal and the information related to the second calibration signal;

[0123] Among them, the information related to the first calibration signal is information associated with the first calibration signal, and can include at least one of the following: the transmission time slot indication of the first calibration signal, the configuration information indication of the first measurement result, the transmission time slot indication of the first measurement result, the configuration indication of the first calibration signal;

[0124] The relevant information of the second calibration signal is the information associated with the second calibration signal, and may include at least one of the following: the transmission time slot indication of the second calibration signal, the configuration information indication of the second measurement result, the transmission time slot indication of the second measurement result, and the configuration indication of the second calibration signal.

[0125] The transmission time slot indication of the first calibration signal is used to indicate the transmission time slot of the first calibration signal. Optionally, the transmission time slot indication of the first calibration signal may include: the offset of the transmission time slot of the first calibration signal relative to the transmission time slot of the control information.

[0126] The configuration information indication of the first measurement result is used to indicate the measurement reporting parameters of the measurement result, and may be one or more parameters.

[0127] The transmission time slot indication of the first measurement result is used to indicate the transmission time slot of the first measurement result. Optionally, the transmission time slot indication of the first measurement result may include: the offset of the transmission time slot of the first measurement result relative to the transmission time slot of the control information; or, the offset of the transmission time slot of the first measurement result relative to the transmission time slot of the first calibration signal.

[0128] The configuration indication of the first calibration signal is used to indicate the first calibration signal. Optionally, the first calibration signal may be implemented by a Channel State Information-Reference Signal (CSI-RS), and the configuration indication of the first calibration signal may include: the configuration index number of the CSI-RS serving as the first calibration signal. The first calibration signal may also be other reference signals or channels, which are not limited in this application.

[0129] The transmission time slot indication of the second calibration signal is used to indicate the transmission time slot of the second calibration signal. Optionally, the transmission time slot indication of the second calibration signal may include: the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information; or, the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the first calibration signal. The second calibration signal may also be other reference signals or channels, which are not limited in this application.

[0130] The configuration information indication of the second measurement result is used to indicate the measurement reporting parameters of the measurement result, and may be one or more parameters.

[0131] The transmission time slot indication of the second measurement result is used to indicate the transmission time slot of the second measurement result. Optionally, the transmission time slot indication of the second measurement result may include: the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the control information; or, the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the second calibration signal.

[0132] The configuration indication of the second calibration signal is used to indicate the second calibration signal. Optionally, the second calibration signal may be implemented by CSI-RS, and the configuration indication of the second calibration signal may include: the configuration index number of the CSI-RS serving as the second calibration signal.

[0133] In some embodiments, the above control information may be DCI or SCI. Taking DCI as an example, the DCI may include a trigger status field for indicating the trigger status. In the embodiments of the present application, the configuration index numbers of the CSI-RS serving as the first calibration signal and the CSI-RS serving as the second calibration signal may be indicated simultaneously by the trigger status to save signaling overhead.

[0134] In some embodiments, the relevant information of the first calibration signal and the relevant information of the second calibration signal may also be carried by different control information. For example, the first device sends control information 1 and control information 2 to the second device. Control information 1 includes the relevant information of the first calibration signal, and control information 2 includes the relevant information of the second calibration signal. In some other embodiments, the above control information 2 may also be sent by the second device to the first device.

[0135] Optionally, the above first measurement result may include Figures 4A - 4C the delay L1 or L2 in, for time calibration in sensing. Optionally, the first measurement result may further include other measurement parameters, which are not limited in the embodiments of the present application.

[0136] It can be understood that the above first measurement result and second measurement result may be transmitted to the peer device in the form of a measurement report. The format of the measurement report may be pre-configured by a higher layer and indicated by control information for the measurement report format used in this measurement.

[0137] Figure 5B is another schematic flowchart of the time calibration method provided by the embodiments of the present application. This method may be executed by a second device, and the second device may be Figure 3A a terminal device in, or Figure 3B any network-side device in, or Figure 3C any terminal device in. As Figure 5B shown, this method may include:

[0138] Step 501: The second device receives the control information sent by the first device, and the control information includes: the relevant information of the calibration signal;

[0139] Step 502: The second device measures the first calibration signal sent by the first device according to the relevant information of the calibration signal, and obtains a first measurement result;

[0140] Step 503: The second device sends a first measurement result to the first device, where the first measurement result is used for time calibration in the perception with the first device.

[0141] Optionally, the method may further include:

[0142] Sending a second calibration signal according to the relevant information of the calibration signal;

[0143] Receiving a second measurement result sent by the first device, where the second measurement result is obtained by the first device measuring the second calibration signal, and the second measurement result is used for time calibration in the perception with the first device.

[0144] The implementation of the embodiments of this application can refer to Figure 5A , which will not be elaborated here.

[0145] Figure 5A and Figure 5B in which the first device sends a first calibration signal and the second device measures the first calibration signal, so that a first measurement result can be obtained, which is used for time calibration when the first device and the second device perform perception, thereby realizing time calibration in the perception service.

[0146] Figure 6A FIG. is a schematic flowchart of a time calibration method provided by the embodiments of this application. Device A and device B in the embodiments of this application may be network-side devices respectively; or, device A is a network-side device and device B is a terminal device; or, device A and device B are terminal devices respectively.

[0147] As Figure 6A shown, the method may include:

[0148] Step 601: Device A sends first control information to device B.

[0149] The first control information includes: the relevant information of the first calibration signal.

[0150] Optionally, the relevant information of the first calibration signal may include: the configuration index number of the first calibration signal, time domain position information.

[0151] Optionally, the first control information includes: a trigger state (triggerstate) field, and the configuration index number of the first calibration signal can be indicated through the trigger state field.

[0152] For example, if the first calibration signal is implemented through CSI-RS, there may be a pre-set association relationship between the CSI-RS configuration index number and the trigger state in device A: CSI-RS set-1 (trigger-state-2), CSI-RS set-2 (trigger-state-1), CSI-RS set-3 (trigger-state-3). Then, if the trigger state field in the first control information includes: trigger-state-1, the configuration index number of the first calibration signal indicated by the first control information is: CSI-RS set-2.

[0153] Optionally, the time domain position information of the first calibration signal may include: time slot offset 1, which is used to indicate the offset of the time slot when device A sends the first calibration signal relative to the time slot when the first control information is sent, and is also the offset between the time slot when device B receives the first calibration signal and the time slot when the first control information is received. The time slot offset 1 may be, for example, Figure 6B the slotoffset1 shown in

[0154] Optionally, the related information of the first calibration signal may further include: the time domain position information of the first measurement report.

[0155] Optionally, the time domain position information of the first measurement report may include: time slot offset a1, which is used to indicate the offset of the time slot when device A receives the first measurement report relative to the time slot when device A sends the first control information, and is also the offset between the time slot when device B sends the first measurement report and the time slot when device B receives the first control information.

[0156] Optionally, the time domain position information of the first measurement report may include: time slot offset a2, which is used to indicate the offset of the time slot when device A receives the first measurement report relative to the time slot when device A sends the first calibration signal, and is also the offset between the time slot when device B sends the first measurement report and the time slot when device B receives the first calibration signal.

[0157] Optionally, if device A is a network-side device and device B is a terminal device, the first control information may be DCI; or, if both device A and device B are terminal devices, the first control information may be SCI.

[0158] Optionally, the trigger state field in the first control information may further indicate the format of the measurement report used for the first measurement result, etc., which is not limited in the embodiments of the present application.

[0159] Step 602: Device A sends second control information to device B.

[0160] The second control information includes: the related information of the second calibration signal.

[0161] Optionally, the related information of the second calibration signal may include: the configuration index number of the second calibration signal, and the time domain position information.

[0162] Optionally, the second control information includes: a trigger status field, and the configuration index number of the second calibration signal can be indicated by the trigger status field.

[0163] For example, if the second calibration signal is implemented by CSI-RS, there may be a pre-established association relationship between the CSI-RS configuration index number and the trigger status in device B: CSI-RS set-2(trigger-state-2), CSI-RS set-1(trigger-state-1), CSI-RS set-3(trigger-state-3). Then, if the trigger status field in the second control information includes: trigger-state-1, the configuration index number of the second calibration signal indicated by the second control information is: CSI-RS set-1.

[0164] Optionally, the time domain position information of the second calibration signal may include: a time slot offset 2, which is used to indicate the offset between the time slot when device B sends the second calibration signal and the time slot when device B receives the second control information, and is also the offset between the time slot when device A measures the second calibration signal and the time slot when device A sends the second control information. For example, the time slot offset 2 can be as shown by Figure 6C slotoffset2 in

[0165] Optionally, the related information of the second calibration signal may further include: the time domain position information of the second measurement report.

[0166] Optionally, the time domain position information of the second measurement report may include: a time slot offset b1, which is used to indicate the offset between the time slot when device B receives the second measurement report and the time slot when device B receives the first control information, and is also the offset between the time slot when device A sends the second measurement report and the time slot when device A sends the first control information.

[0167] Optionally, the time domain position information of the first measurement report may include: a time slot offset b2, which is used to indicate the offset between the time slot when device B receives the second measurement report and the time slot when device B sends the second calibration signal, and is also the offset between the time slot when device A sends the second measurement report and the time slot when device A receives the second calibration signal.

[0168] Optionally, if device A is a network-side device and device B is a terminal device, the second control information may be DCI; or, if both device A and device B are terminal devices, the second control information may be SCI.

[0169] Step 603: Device A sends a first calibration signal according to the relevant information of the first calibration signal, and device B measures the first calibration signal according to the relevant information of the first calibration signal to obtain a first measurement result.

[0170] Optionally, when the relevant information of the first calibration signal includes the configuration index number of the first calibration signal, device A can obtain the CSI-RS corresponding to the configuration index number according to the configuration index number, and use the CSI-RS as the first calibration signal to send.

[0171] Optionally, the relevant information of the first calibration signal includes: the time-domain position information of the first calibration signal, such as the above-mentioned time slot offset 1. Device A can calculate the transmission time slot of the first calibration signal according to the time slot offset 1 and the transmission time slot of the first control information, and send the first calibration signal in this time slot.

[0172] Optionally, the relevant information of the first calibration signal includes: the time-domain position information of the first calibration signal, such as the above-mentioned time slot offset 1. Device B can calculate the reception time slot of the first calibration signal according to the time slot offset 1 and the time slot when the first control information is received, and measure the first calibration signal in this time slot.

[0173] Step 604: Device B sends a second calibration signal according to the relevant information of the second calibration signal, and device B measures the second calibration signal according to the relevant information of the second calibration signal to obtain a second measurement result.

[0174] Optionally, when the relevant information of the second calibration signal includes the configuration index number of the second calibration signal, device B can obtain the CSI-RS corresponding to the configuration index number according to the configuration index number, and use the CSI-RS as the second calibration signal to send.

[0175] Optionally, the relevant information of the second calibration signal includes: the time-domain position information of the second calibration signal, such as the above-mentioned time slot offset 2. Device B can calculate the transmission time slot of the second calibration signal according to the time slot offset 2 and the reception time slot of the first control information, and send the second calibration signal in this time slot.

[0176] Optionally, the relevant information of the second calibration signal includes: the time-domain position information of the second calibration signal, such as the above-mentioned time slot offset 2. Device A can calculate the reception time slot of the second calibration signal according to the time slot offset 2 and the time slot when the second control information is sent, and measure the second calibration signal in this time slot.

[0177] Step 605: Device A sends the second measurement result to device B.

[0178] Optionally, when the relevant information of the second calibration signal includes the above-mentioned time slot offset b1, Device A can calculate the transmission time slot of the second measurement result based on the time slot offset b1 and the time slot for sending the second control information, and Device B can calculate the reception time slot of the second measurement result based on the time slot offset b1 and the time slot for receiving the second control information. Thus, Device A can send the second measurement result to Device B at this time slot.

[0179] Optionally, when the relevant information of the second calibration signal includes the above-mentioned time slot offset b2, Device A can calculate the transmission time slot of the second measurement result based on the time slot offset b1 and the time slot for receiving the second calibration signal, and Device B can calculate the reception time slot of the second measurement result based on the time slot offset b1 and the time slot for sending the second calibration signal. Thus, Device A can send the second measurement result to Device B at this time slot.

[0180] Step 606: Device B sends the first measurement result to Device A.

[0181] Optionally, when the relevant information of the first calibration signal includes the above-mentioned time slot offset a1, Device A can calculate the reception time slot of the first measurement result based on the time slot offset a1 and the time slot for sending the first control information, and Device B can calculate the transmission time slot of the first measurement result based on the time slot offset a1 and the time slot for receiving the first control information. Thus, Device B can send the first measurement result to Device A at this time slot.

[0182] Optionally, when the relevant information of the first calibration signal includes the above-mentioned time slot offset a2, Device A can calculate the reception time slot of the first measurement result based on the time slot offset a2 and the time slot for sending the first calibration signal, and Device B can calculate the transmission time slot of the first measurement result based on the time slot offset a2 and the time slot for receiving the first calibration signal. Thus, Device B can send the first measurement result to Device A at this time slot.

[0183] Step 607: Device A and Device B perform time calibration for sensing based on the first measurement result and the second measurement result, and then perform sensing.

[0184] Among them, in combination with Figures 4A - 4C the schematic diagram shown, Device A and Device B can calculate the path delay based on the received L1 and L2 Perform time calibration in the collaborative sensing between Device A and Device B according to the calculated path delay L.

[0185] It is understandable that the execution order between step 602 and step 603 is not restricted, as long as step 603 is executed after step 601.

[0186] It is understandable that the execution order between step 603 and step 604 is not limited, as long as step 604 is executed after step 602.

[0187] It is understandable that the execution order between step 604 and step 605 is not limited, as long as step 605 is executed after step 603.

[0188] In another embodiment provided by the present application, the sending of the second control information from device A to device B in the above step 602 may also be replaced with: device B sends the second control information to device A.

[0189] In the above embodiments, the relevant information of the first calibration signal is carried by the first control information, and the relevant information of the second calibration signal is carried by the second control information. In another embodiment provided by the present application, the first control information may carry the relevant information of both the first calibration signal and the relevant information of the second calibration signal. In the embodiments of the present application, the relevant information of the first calibration signal and the relevant information of the second calibration signal are collectively referred to as the relevant information of the calibration signal. At this time, step 602 in the above embodiments may be omitted, that is, device A may not send the second control information to device B. At this time, the first control information in step 601 may include: the relevant information of the calibration signal. For example Figure 7 In the embodiment shown in FIG. 6, step 602 is omitted as an example.

[0190] Optionally, the first control information includes a trigger state field. If the relevant information of the calibration signal includes the configuration index numbers of the first calibration signal and the second calibration signal, the configuration index numbers of the first calibration signal and the second calibration signal can be indicated simultaneously through the above trigger state field.

[0191] Continuing the foregoing example:

[0192] In device A, there may be a preset association relationship between the configuration index number of the calibration signal and the trigger state: CSI-RS set-1 (trigger-state-2), CSI-RS set-2 (trigger-state-1), CSI-RS set-3 (trigger-state-3). Then, if the trigger state field in the first control information includes: trigger-state-1, the configuration index number of the first calibration signal indicated by the first control information is: CSI-RS set-2.

[0193] In device B, there can be a preset association relationship between the configuration index number of the calibration signal and the trigger state: CSI-RSset-2 (trigger-state-2), CSI-RS set-1 (trigger-state-1), CSI-RS set-3 (trigger-state-3). Then, if the trigger state field in the first control information includes: trigger-state-1, the configuration index number of the second calibration signal indicated by the first control information is: CSI-RS set-1.

[0194] Thus, it realizes that the trigger-state-1 in the trigger state field of the first control information simultaneously indicates that the configuration index number of the first calibration signal is: CSI-RS set-2 and the configuration index number of the second calibration signal is: CSI-RS set-1.

[0195] In some embodiments, the first control information may include: time slot offset 1, time slot offset 3.

[0196] The implementation of the time slot offset 1 can be referred to the foregoing embodiments and will not be elaborated here. For example Figure 8A in which slotoffset1 represents the time slot offset 1.

[0197] The time slot offset 3 is used to indicate the offset of the time slot when device B sends the second calibration signal relative to the time slot when device B receives the first control information, and is also the offset of the time slot when device A receives the second calibration signal relative to the time slot when device A sends the first control information. For example Figure 8A in which slotoffset3 represents the time slot offset 3.

[0198] In other embodiments, the first control information may include: time slot offset 1, time slot offset 4.

[0199] The implementation of the time slot offset 1 can be referred to the foregoing embodiments and will not be elaborated here. For example Figure 8B in which slotoffset1 represents the time slot offset 1.

[0200] The time slot offset 4 is used to indicate the offset of the time slot when device B sends the second calibration signal relative to the time slot when device B receives the first calibration signal, that is, the offset of the time slot when device A receives the second calibration signal relative to the time slot when device A sends the first calibration signal. For example Figure 8B in which slotoffset4 represents the time slot offset 4.

[0201] In another embodiment of the time calibration method provided in this application, step 606 in the above embodiment may be incorporated into step 604 for execution, that is, step 606 is omitted, and device B sends the first measurement result and the second calibration signal to device A simultaneously. For example Figure 9 in Figure 7 the method shown, step 606 is omitted, and taking step 901 to replace step 604 as an example.

[0202] Step 901: Device B sends the first measurement result and the second calibration signal to device A simultaneously.

[0203] Optionally, in this step, device B sending the first measurement result and the second calibration signal to device A simultaneously may include: device B sending the first measurement result and the second calibration signal to device A in the same time slot.

[0204] The method for determining the time slot in which device B sends the first measurement result may refer to the relevant description in the foregoing embodiment and will not be elaborated here.

[0205] Compared with the above embodiment, this method does not require device B to send the first measurement result separately, thus saving communication resources.

[0206] The following Figures 10A - 12B In the embodiment shown, still taking the two devices for sensing as device A and device B as an example, and assuming that both device A and device B are devices supporting SBFD.

[0207] Optionally, device A and device B in the embodiments of this application may both be network-side devices; or, device A is a network-side device and device B is a terminal device; or, both device A and device B are terminal devices.

[0208] Figure 10A is a schematic flowchart of a time calibration provided by an embodiment of this application. As Figure 10A shown, this method may include:

[0209] Step 1001: Device A sends control information to device B in the first time slot.

[0210] The control information may include: time slot offset c1, time slot offset c2.

[0211] The time slot offset c1 is used to indicate: the offset of the time slot for sending the calibration signal (including the first calibration signal and the second calibration signal described below) relative to the first time slot;

[0212] The time slot offset c2 is used to indicate: the offset of the time slot for sending the measurement result (including the first measurement result and the second measurement result described below) relative to the first time slot.

[0213] Optionally, when both Device A and Device B are terminal devices, the control information may be SCI; or, when Device A is a network-side device and Device B is a terminal device, the control information may be DCI.

[0214] Step 1002-a: Device A determines a second time slot according to the first time slot and the time slot offset c1.

[0215] Step 1002-b: Device B determines a second time slot according to the first time slot and the time slot offset c1.

[0216] Step 1003: Device A sends a first calibration signal in the second time slot, and Device B measures the first calibration signal in the second time slot to obtain a first measurement result; Device B sends a second calibration signal in the second time slot, and Device A measures the second calibration signal in the second time slot to obtain a second measurement result.

[0217] Optionally, to simplify the signaling interaction between Device A and Device B, the relative time-frequency position of the first calibration signal within the bandwidth of Device A is the same as the relative time-frequency position of the second calibration signal within the bandwidth of Device B.

[0218] Optionally, the relative time-frequency position of the first calibration signal within the bandwidth of Device A may be preset in Device A, or may be configured for Device A in advance by a higher-layer signaling (e.g., RRC signaling).

[0219] Optionally, the relative time-frequency position of the second calibration signal within the bandwidth of Device B may be preset in Device B, or may be configured for Device B in advance by a higher-layer signaling (e.g., RRC signaling).

[0220] Step 1004-a: Device A determines a third time slot according to the first time slot and the time slot offset c2.

[0221] Step 1004-b: Device B determines a third time slot according to the first time slot and the time slot offset c2.

[0222] Step 1005: Device A sends the second measurement result in the third time slot; Device B sends the first measurement result in the third time slot.

[0223] Step 1006: Device A and Device B perform sensing time calibration according to the first measurement result and the second measurement result, and perform sensing.

[0224] For example Figure 10B As shown, taking Device A and Device B as UE1 and UE2 that support SBFD as an example.

[0225] Suppose UE1 sends an SCI to UE2 in time slot n-x, the time slot offset c1 included in the SCI is x, and the time slot offset c2 is x + y, then

[0226] UE1 sends a first calibration signal in time slot n, and UE2 measures the first calibration signal in time slot n to obtain a first measurement result; UE2 sends a second calibration signal in time slot n, and UE1 measures the second calibration signal in time slot n to obtain a second measurement result;

[0227] UE1 sends the second measurement result to UE2 in time slot n + y, and UE2 sends the first measurement result to UE1 in time slot n + y;

[0228] After that, UE1 and UE2 can perform perception time calibration according to the first measurement result and the second measurement result, and perform perception.

[0229] Figure 11A Another flowchart of the time calibration method provided by the embodiments of this application is shown in Figure 11A As shown, the method may include:

[0230] Step 1101: Device A sends control information and a first calibration signal in a first time slot.

[0231] Optionally, the sending time of the control information in the first time slot is earlier than the sending time of the first calibration signal, so that device B can complete the measurement of the first calibration signal after receiving the SCI.

[0232] Optionally, the control information may include: time slot offset c1, time slot offset c2, and time slot offset c3.

[0233] At this time, the time slot offset c1 is used to indicate the offset of the time slot for sending the second calibration signal relative to the first time slot.

[0234] The time slot offset c3 is used to indicate that the time slot for sending the first calibration signal is the time slot where the control information is located, that is, the first time slot.

[0235] In some embodiments, if it is pre-agreed between device A and device B that device A sends the first calibration signal in the time slot for sending the control information, the time slot offset 3 may not be included in the control information.

[0236] Step 1102: Device B receives the control information and measures the first calibration signal in the first time slot to obtain a first measurement result.

[0237] Step 1103-a: Device A determines a second time slot according to the first time slot and the time slot offset c1.

[0238] Step 1103-b: Device B determines a second time slot according to the first time slot and the time slot offset c1.

[0239] Step 1104: Device B sends a second calibration signal in the second time slot, and device A measures the second calibration signal in the second time slot to obtain a second measurement result.

[0240] The implementation of steps 1105 to 1107 can refer to steps 1004 to 1006, which will not be elaborated here.

[0241] For example Figure 10B As shown, still taking the case where device A and device B are UE1 and UE2 that support SBFD as an example.

[0242] Assume that UE1 sends an SCI and a first calibration signal to UE2 in time slot n - x. The time slot offset c1 included in the SCI is x, and the time slot offset c2 is x + y. Then,

[0243] After receiving the SCI in time slot n - x, UE2 measures the first calibration signal in time slot n - x to obtain a first measurement result;

[0244] UE2 sends a second calibration signal in time slot n, and UE1 measures the second calibration signal in time slot n to obtain a second measurement result;

[0245] UE1 sends the second measurement result to UE2 in time slot n + y, and UE2 sends the first measurement result to UE1 in time slot n + y;

[0246] After that, UE1 and UE2 can perform time calibration for sensing based on the first measurement result and the second measurement result, and perform sensing.

[0247] Figure 12A Another flow diagram of the time calibration method provided by the embodiments of the present application, as Figure 12A shown, the method may include:

[0248] Step 1201: Device A sends control information and a first calibration signal in a first time slot.

[0249] Step 1202: Device B receives the control information and measures the first calibration signal in the first time slot to obtain a first measurement result.

[0250] Step 1203 - a: Device A determines a second time slot according to the first time slot and the time slot offset c1.

[0251] Step 1203 - b: Device B determines a second time slot according to the first time slot and the time slot offset c1.

[0252] Step 1204: Device B sends a second calibration signal and the first measurement result in the second time slot, and device A receives the first measurement result in the second time slot and measures the second calibration signal to obtain a second measurement result.

[0253] Step 1205 - a: Device A determines a third time slot according to the first time slot and the time slot offset c2.

[0254] Step 1205-b: Device B determines a third time slot according to the first time slot and the time slot offset c2.

[0255] Step 1206: Device B sends a second measurement result in the third time slot, and device A receives the second measurement result in the third time slot.

[0256] Step 1207: Device A and device B perform sensing time calibration according to the first measurement result and the second measurement result, and perform sensing.

[0257] For example Figure 12B As shown, take device A and device B as UE1 and UE2 that support SBFD as an example.

[0258] Suppose UE1 sends an SCI to UE2 in time slot n-x, the time slot offset c1 included in the SCI is x, and the time slot offset c2 is x+y, then,

[0259] UE1 sends a first calibration signal in time slot n, UE2 measures the first calibration signal in time slot n to obtain a first measurement result; UE2 sends a second calibration signal and the first measurement result in time slot n, UE1 measures the second calibration signal in time slot n to obtain a second measurement result, and receives the first measurement result;

[0260] UE1 sends the second measurement result to UE2 in time slot n+y;

[0261] After that, UE1 and UE2 can perform sensing time calibration according to the first measurement result and the second measurement result, and perform sensing.

[0262] Following Figures 13 - 15 In the present embodiment shown below, still take the two devices performing sensing as device A and device B as an example, and assume that device A and device B are simultaneous co-frequency full-duplex devices.

[0263] Optionally, device A and device B in the embodiments of the present application may both be network-side devices; or, device A is a network-side device and device B is a terminal device; or, device A and device B are both terminal devices.

[0264] In an embodiment provided by the present application, the implementation of the time calibration method can refer to Figure 10A , the main difference is that device A and device B simultaneously send a second calibration signal and a first calibration signal respectively in the second time slot, and device A and device B simultaneously send a first measurement result and a second measurement result respectively in the third time slot.

[0265] For example Figure 13 As shown, take device A and device B as UE1 and UE2 that support simultaneous co-frequency full-duplex as an example.

[0266] Suppose UE1 sends an SCI to UE2 in time slot n-x, where the time slot offset c1 included in the SCI is x and the time slot offset c2 is x+y. Then,

[0267] UE1 sends a first calibration signal in time slot n, and UE2 measures the first calibration signal in time slot n to obtain a first measurement result; UE2 sends a second calibration signal while UE1 sends the first calibration signal, and UE1 measures the second calibration signal in time slot n to obtain a second measurement result.

[0268] UE1 sends the second measurement result to UE2 in time slot n+y, and UE2 sends the first measurement result to UE1 in time slot n+y.

[0269] After that, UE1 and UE2 can perform time calibration for sensing based on the first measurement result and the second measurement result, and perform sensing.

[0270] In another embodiment provided by this application, the implementation of the time calibration method can refer to Figure 10A , with the main difference being that device A and device B respectively send the first calibration signal and the second calibration signal in a TDM manner within the second time slot, and device A and device B simultaneously send the first measurement result and the second measurement result respectively in the third time slot.

[0271] For example Figure 14 As shown, taking UE1 and UE2 that support simultaneous co-frequency full duplex as device A and device B as an example.

[0272] Suppose UE1 sends an SCI to UE2 in time slot n-x, where the time slot offset c1 included in the SCI is x and the time slot offset c2 is x+y. Then,

[0273] UE1 and UE2 respectively send the first calibration signal and the second calibration signal in a TDM manner in time slot n, and moreover, UE2 measures the first calibration signal in time slot n to obtain a first measurement result, and UE1 measures the second calibration signal in time slot n to obtain a second measurement result.

[0274] UE1 sends the second measurement result to UE2 in time slot n+y, and UE2 sends the first measurement result to UE1 in time slot n+y.

[0275] After that, UE1 and UE2 can perform time calibration for sensing based on the first measurement result and the second measurement result, and perform sensing.

[0276] In another embodiment provided by this application, the implementation of the time calibration method can refer to Figure 11A , with the main difference being that device A and device B simultaneously send the first measurement result and the second measurement result respectively in the third time slot.

[0277] For exampleFigure 15 As shown in the figure, take UE1 and UE2, which are device A and device B supporting simultaneous co-frequency full duplex, as an example.

[0278] Suppose UE1 sends an SCI and a first calibration signal to UE2 in time slot n - x. The time slot offset c1 included in the SCI is x, and the time slot offset c2 is x + y. Then,

[0279] UE2 measures the first calibration signal in time slot n - x to obtain a first measurement result;

[0280] UE2 sends a second calibration signal in time slot n, and UE1 measures the second calibration signal in time slot n to obtain a second measurement result;

[0281] UE1 and UE2 simultaneously send the second measurement result and the first measurement result respectively in time slot n + y;

[0282] After that, UE1 and UE2 can perform time calibration for sensing according to the first measurement result and the second measurement result, and perform sensing.

[0283] Figure 16 It is a schematic structural diagram of a time calibration device provided by an embodiment of the present application. As Figure 16 shown, the device 1600 may include:

[0284] A sending unit 1601, configured to send first control information to a second device, where the first control information includes: information related to a calibration signal; and send a first calibration signal according to the information related to the calibration signal;

[0285] A receiving unit 1602, configured to receive a first measurement result sent by the second device, where the first measurement result is obtained by the second device measuring the first calibration signal, and the first measurement result is used for time calibration in sensing with the second device.

[0286] Figure 17 It is a schematic structural diagram of a time calibration device provided by an embodiment of the present application. As Figure 17 shown, the device 1700 may include:

[0287] A receiving unit 1701, configured to receive first control information sent by a first device, where the first control information includes: information related to a calibration signal;

[0288] A measuring unit 1702, configured to measure the first calibration signal sent by the first device according to the information related to the calibration signal to obtain a first measurement result;

[0289] A sending unit 1703, configured to send a first measurement result to the first device, where the first measurement result is used for time calibration in the sensing with the first device.

[0290] Figure 16 and Figure 17 The device provided by the illustrated embodiment can be used to execute the technical solution of the method embodiment of the present application. The implementation principle and technical effects can be further referred to the relevant descriptions in the method embodiment.

[0291] It should be understood that the division of each module of the above Figures 16 - 17 illustrated device is only a division of logical functions. In actual implementation, it can be fully or partially integrated into a physical entity, or physically separated. And these modules can all be implemented in the form of software called by a processing element; they can also all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, the sending unit can be a separately established processing element, or can be integrated in a certain chip of the terminal device. The implementation of other units is similar. In addition, all or part of these units can be integrated together or can be independently implemented. For example, the above time calibration device can be a chip or a chip module, or the above time calibration device can be a part of a chip or a chip module. In the implementation process, each step of the above method or each of the above units can be completed by the integrated logic circuit in the processor element or the instruction in the form of software.

[0292] As Figure 18 illustrated, the present application provides an electronic device. The electronic device 120 includes: a processor 121, a memory 122, and a transceiver 123; the processor and the transceiver cooperate to implement the method provided by the embodiment of the present application. The above electronic device can be a terminal device or a network-side device.

[0293] The present application further provides a terminal device. The device includes a storage medium and a central processor. The storage medium can be a non-volatile storage medium. A computer-executable program is stored in the storage medium. The central processor is connected to the non-volatile storage medium and executes the computer-executable program to implement the method provided by the embodiment of the present application.

[0294] The present application further provides a network-side device. The device includes a storage medium and a central processor. The storage medium can be a non-volatile storage medium. A computer-executable program is stored in the storage medium. The central processor is connected to the non-volatile storage medium and executes the computer-executable program to implement the method provided by the embodiment of the present application.

[0295] The embodiments of the present application further provide a parameter adjustment system, including the terminal device and the network-side device provided by the embodiments of the present application.

[0296] The embodiments of the present application further provide a computer-readable storage medium, in which a computer program is stored. When the computer program runs on a computer, the computer is enabled to execute the method provided by the embodiments of the present application.

[0297] The embodiments of the present application further provide a computer program product, which includes a computer program. When the computer program runs on a computer, the computer is enabled to execute the method provided by the embodiments of the present application.

[0298] In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent the situation where A exists alone, A and B exist simultaneously, or B exists alone. Where A and B may be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one of the following" and its similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c may be single or multiple.

[0299] Those of ordinary skill in the art can realize that the units and algorithm steps described in the embodiments disclosed herein can be implemented by a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0300] 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 foregoing method embodiments and will not be repeated here.

[0301] In several embodiments provided by the present application, if any 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 present application, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM for short), random access memories (RAM for short), magnetic disks, or optical discs.

[0302] As described above, the foregoing is only the specific implementation manner of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all such changes or substitutions should be covered by the protection scope of the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A time calibration method, characterized in that, applied to a first device, the method includes: sending control information to a second device, the control information including: relevant information of a calibration signal; sending a first calibration signal according to the relevant information of the calibration signal; receiving a first measurement result sent by the second device, the first measurement result being obtained by the second device measuring the first calibration signal, and the first measurement result being used for time calibration in sensing with the second device.

2. The method according to claim 1, characterized in that, the method further includes: measuring a second calibration signal sent by the second device according to the relevant information of the calibration signal to obtain a second measurement result; sending the second measurement result to the second device, and the second measurement result being used for time calibration in sensing with the second device.

3. The method according to claim 2, characterized in that, the relevant information of the calibration signal includes the relevant information of the first calibration signal and the relevant information of the second calibration signal; the relevant information of the first calibration signal includes at least one of the following: the transmission time slot indication of the first calibration signal, the configuration information indication of the first measurement result, the transmission time slot indication of the first measurement result, the configuration indication of the first calibration signal; and / or, the relevant information of the second calibration signal includes at least one of the following: the transmission time slot indication of the second calibration signal, the configuration information indication of the second measurement result, the transmission time slot indication of the second measurement result, the configuration indication of the second calibration signal.

4. The method according to claim 3, characterized in that, the configuration indication of the first calibration signal includes: the configuration index number of the first calibration signal.

5. The method according to claim 4, characterized in that, the configuration indication of the second calibration signal includes: the configuration index number of the second calibration signal.

6. The method according to claim 5, characterized in that, the control information includes: trigger status information, and the trigger status information is used to indicate the configuration index number of the first calibration signal and the configuration index number of the second calibration signal.

7. The method according to claim 3, characterized in that, the transmission time slot indication of the first calibration signal includes: a first time slot offset, and the first time slot offset is used to indicate the offset of the transmission time slot of the first calibration signal relative to the transmission time slot of the control information.

8. The method according to claim 3, characterized in that, the transmission time slot indication of the second calibration signal includes: a second time slot offset, and the second time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information.

9. The method according to claim 3, characterized in that, the transmission time slot indication of the second calibration signal includes: a third time slot offset, and the third time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the first calibration signal.

10. The method according to claim 2, characterized in that, The step of sending the first calibration signal according to the relevant information of the calibration signal is performed in the same time slot as the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of sending the second measurement result to the second device.

11. The method according to claim 2, wherein, The step of sending control information to the second device is performed in the same time slot as the step of sending the first calibration signal according to the relevant information of the calibration signal; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of sending the second measurement result to the second device.

12. The method according to claim 2, wherein, The step of sending control information to the second device is performed in the same time slot as the step of sending the first calibration signal according to the relevant information of the calibration signal; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal.

13. The method according to claim 2, wherein, The step of sending the first calibration signal according to the relevant information of the calibration signal and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are performed simultaneously in the same time slot; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of sending the second measurement result to the second device.

14. The method according to claim 2, wherein, The step of sending the first calibration signal according to the relevant information of the calibration signal and the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal are performed in the same time slot in a time division multiplexing manner; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of sending the second measurement result to the second device.

15. The method according to claim 2, wherein, The step of sending control information to the second device is performed in the same time slot as the step of sending the first calibration signal according to the relevant information of the calibration signal; and / or, The step of receiving the first measurement result sent by the second device is performed in the same time slot as the step of measuring the second calibration signal sent by the second device according to the relevant information of the calibration signal simultaneously.

16. The method according to any one of claims 10 to 15, wherein, The relevant information of the calibration signal includes: a fourth time slot offset and a fifth time slot offset; The fourth time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information; The fifth time slot offset is used to indicate the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the control information.

17. A time calibration method, characterized in that, applied to a second device, the method includes: receiving control information sent by a first device, the control information including: information related to a calibration signal; measuring a first calibration signal sent by the first device according to the information related to the calibration signal to obtain a first measurement result; sending the first measurement result to the first device, the first measurement result being used for time calibration in sensing with the first device.

18. The method according to claim 17, characterized in that, the method further includes: sending a second calibration signal according to the information related to the calibration signal; receiving a second measurement result sent by the first device, the second measurement result being obtained by the first device measuring the second calibration signal, the second measurement result being used for time calibration in sensing with the first device.

19. The method according to claim 18, characterized in that, the information related to the calibration signal includes the information related to the first calibration signal and the information related to the second calibration signal; the information related to the first calibration signal includes at least one of the following: the transmission time slot indication of the first calibration signal, the configuration information indication of the first measurement result, the transmission time slot indication of the first measurement result, the configuration indication of the first calibration signal; and / or, the information related to the second calibration signal includes at least one of the following: the transmission time slot indication of the second calibration signal, the configuration information indication of the second measurement result, the transmission time slot indication of the second measurement result, the configuration indication of the second calibration signal.

20. The method according to claim 19, characterized in that, the configuration indication of the first calibration signal includes: the configuration index number of the first calibration signal.

21. The method according to claim 20, characterized in that, the configuration indication of the second calibration signal includes: the configuration index number of the second calibration signal.

22. The method according to claim 21, characterized in that, the control information includes: trigger status information, the trigger status information being used to indicate the configuration index number of the first calibration signal and the configuration index number of the second calibration signal.

23. The method according to claim 19, characterized in that, the transmission time slot indication of the first calibration signal includes: a first time slot offset, the first time slot offset being used to indicate the offset of the transmission time slot of the first calibration signal relative to the transmission time slot of the control information.

24. The method according to claim 19, characterized in that, the transmission time slot indication of the second calibration signal includes: a second time slot offset, the second time slot offset being used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information.

25. The method according to claim 19, characterized in that, The transmission time slot indication of the second calibration signal includes: a third time slot offset, where the third time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the first calibration signal.

26. The method according to claim 18, wherein, the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal and the step of transmitting the second calibration signal according to the relevant information of the calibration signal are executed in the same time slot; and / or, the step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed in the same time slot.

27. The method according to claim 18, wherein, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or, the step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed in the same time slot.

28. The method according to claim 18, wherein, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or, the step of sending the first measurement result to the first device and the step of transmitting the second calibration signal according to the relevant information of the calibration signal are executed in the same time slot.

29. The method according to claim 18, wherein, the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal and the step of transmitting the second calibration signal according to the relevant information of the calibration signal are executed simultaneously in the same time slot; and / or, the step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

30. The method according to claim 18, wherein, the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal and the step of transmitting the second calibration signal according to the relevant information of the calibration signal are executed in the same time slot in a time division multiplexing manner; and / or, the step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

31. The method according to claim 18, wherein, the step of receiving the control information sent by the first device and the step of measuring the first calibration signal transmitted by the first device according to the relevant information of the calibration signal are executed in the same time slot; and / or, the step of sending the first measurement result to the first device and the step of receiving the second measurement result sent by the first device are executed simultaneously in the same time slot.

32. The method according to any one of claims 26 to 31, wherein, The relevant information of the calibration signal includes: a fourth time slot offset and a fifth time slot offset; The fourth time slot offset is used to indicate the offset of the transmission time slot of the second calibration signal relative to the transmission time slot of the control information; The fifth time slot offset is used to indicate the offset of the transmission time slot of the second measurement result relative to the transmission time slot of the control information.

33. A time calibration device, characterized in that, it includes: A sending unit, configured to send control information to a second device, where the control information includes: relevant information of a calibration signal; and send a first calibration signal according to the relevant information of the calibration signal; A receiving unit, configured to receive a first measurement result sent by the second device, where the first measurement result is obtained by the second device measuring the first calibration signal, and the first measurement result is used for time calibration during sensing with the second device.

34. A time calibration device, characterized in that, it includes: A receiving unit, configured to receive control information sent by a first device, where the control information includes: relevant information of a calibration signal; A measuring unit, configured to measure the first calibration signal sent by the first device according to the relevant information of the calibration signal to obtain a first measurement result; A sending unit, configured to send the first measurement result to the first device, where the first measurement result is used for time calibration during sensing with the first device.

35. A device, characterized in that, it includes: A processor; A memory; One or more computer programs are stored in the memory, and the one or more computer programs include instructions that, when executed by the processor, cause the device to execute the method according to any one of claims 1 to 16.

36. A device, characterized in that, it includes: A processor; A memory; One or more computer programs are stored in the memory, and the one or more computer programs include instructions that, when executed by the processor, cause the device to execute the method according to any one of claims 17 to 32.

37. A chip module, characterized in that, it includes the device according to claim 33 or 34.

38. A time calibration system, characterized in that, it includes the device according to claim 35 and the device according to claim 36.

39. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when running on a computer, causes the computer to execute the method according to any one of claims 1 to 32.

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