Communication method and apparatus

Abstract

The present application provides a communication method and apparatus. The method comprises: acquiring first information, wherein the first information can be used to indicate a first time window; receiving a sensing signal; and sending first data on the basis of the first time window. For example, the first data may be determined on the basis of the sensing signal. In the present application, a first time window applicable to a sensing scenario is configured for a first network side apparatus, such that the first network side apparatus sends sensing data within the first time window, thereby reducing requirements on a peak bandwidth.

Description

Communication method and apparatus

[0001] The present application claims priority to the Chinese Patent Application No. 202411266803.1, filed on September 10, 2024, and entitled "Communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and apparatus. BACKGROUND

[0003] In the current communication system, the functions of a base station can be split to obtain multiple logical units. Different logical units are used to implement different communication protocol functions in the base station. For example, the base station is split into a baseband unit (BBU) and a remote radio unit (RRU) for deployment. Or, the base station is split into a central unit (CU) and a distributed unit (DU) for deployment. The CU can also be referred to as a centralized unit.

[0004] For a conventional communication scenario, since the delay requirement for a communication signal is relatively strict, only the delay of data processing within the sending network device is considered in the process of transmitting data between different network devices. However, in a perception communication scenario, the perception signal does not need such strict delay control. If the current delay requirement is still used, a large peak bandwidth requirement will be caused. SUMMARY

[0005] The present application provides a communication method and apparatus, which can reduce the peak bandwidth requirement of a network side device.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] In a first aspect, a communication method is provided. The method is applied to a first network side device. The first network side device can be a network device, a component (such as a processor, a circuit, a chip, or a chip system) of a network device, or a logical module or software that can implement all or part of the functions of a network device. For example, the first network side device can be a radio unit (RU). The method can include obtaining first information. The first information can be used to indicate a first time window. A perception signal is received. First data is transmitted based on the first time window. For example, the first data can be determined based on the perception signal.

[0008] The application configures a first time window suitable for a sensing scenario for the first network side device, so that the first network side device transmits sensing data in the first time window, thereby reducing the demand for peak bandwidth.

[0009] In a possible design, the first information can include a first time window parameter. For example, the first time window parameter can be determined by a sensing quality of service (QoS) requirement and / or second information. The second information can be used to indicate resource usage of the second network side device. The method can further include determining the first time window according to the reception time of the sensing signal, the first time length, and the first time window parameter. The first time length can be a time length for processing the sensing signal.

[0010] The application can combine the sensing QoS requirement and / or the resource usage of the second network side device to configure different first time window parameters, so that the first data transmitted by the first network side device on the fronthaul interface can meet the sensing QoS requirement and / or the resource usage of the second network side device.

[0011] In a possible design, the first time window parameter can include: a first time window length; or, the first time window length and a first offset; or, the first time window length and a second offset; or, the first offset and the second offset. The first time window length can be a length of the first time window. The first offset can be an offset of a start time of the first time window relative to an end time of the first time length. The second offset can be an offset of an end time of the first time window relative to the end time of the first time length.

[0012] The application provides multiple manners in which the first time window parameter indicates the first time window, so as to accurately indicate the first time window in different scenarios in a more appropriate manner.

[0013] In a possible design, in a case where the first time window parameter includes the first time window length, the start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal and the minimum value of the first time length. The end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, the maximum value of the first time length, and the first time window length.

[0014] The application provides a manner of determining the start time and the end time of the first time window in a case where the first time window parameter includes the first time window length. In this scenario, the first time window can be accurately determined based on the corresponding time window parameter.

[0015] In a possible design, when the first time window parameter includes a first time window length and a first offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, the first offset, and the first time window length.

[0016] The application provides a manner of determining a start time and an end time of a first time window when a first time window parameter includes a first time window length and a first offset. In this scenario, the first time window can be accurately determined based on the corresponding time window parameter.

[0017] In a possible design, when the first time window parameter includes a first time window length and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the second offset, and minus the first time window length. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0018] The application provides a manner of determining a start time and an end time of a first time window when a first time window parameter includes a first time window length and a second offset. In this scenario, the first time window can be accurately determined based on the corresponding time window parameter.

[0019] In a possible design, when the first time window parameter includes a first offset and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0020] The application provides a manner of determining a start time and an end time of a first time window when a first time window parameter includes a first offset and a second offset. In this scenario, the first time window can be accurately determined based on the corresponding time window parameter.

[0021] In a possible design, the first time window can be one first time window corresponding to M sensing symbols. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined by the M sensing symbols. M is a positive integer. The first time window can be determined according to the reception time of the sensing signal, the first time length, and the first time window parameter, which can include: the first time window is determined according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0022] The application can determine a common first time window for the M perception symbols, thereby reducing signaling overhead.

[0023] In a possible design, the first time window can include first time windows corresponding to the M perception symbols respectively. The perception signal can include the M perception symbols. Accordingly, the first data can be determined by the M perception symbols. M is a positive integer. According to the reception time of the perception signal, the first time length, and the first time window parameter, the first time window can be determined, which can include: for the i-th perception symbol, according to the reception time of the i-th perception symbol, the first time length, and the first time window parameter, the first time window corresponding to the i-th perception symbol is determined. The first data is transmitted based on the first time window, which can include: for the i-th perception symbol, the first data corresponding to the i-th perception symbol is transmitted based on the first time window corresponding to the i-th perception symbol. The i-th perception symbol is any one of the M perception symbols. i is a positive integer less than or equal to M.

[0024] The application can be applied to a scenario where a first time window corresponding to each perception symbol is determined individually, so as to transmit first data corresponding to the perception symbol in the corresponding time window. The data transmission efficiency is guaranteed, and the demand for peak bandwidth is reduced.

[0025] In a possible design, the first time windows corresponding to the M perception symbols are the same. Alternatively, the first time windows corresponding to the M perception symbols are partially or totally different.

[0026] The application provides a relationship between first time windows corresponding to different perception symbols, which can be the same first time window parameter to reduce signaling overhead. Alternatively, each first time window parameter can be indicated independently, so that the first time window is configured more flexibly. The universality of the system is improved.

[0027] In a possible design, in the case where the first time windows corresponding to the M perception symbols are partially or totally different, the first time window parameter can be N first time window parameters. N is a positive integer less than or equal to M.

[0028] The application can configure a certain number of first time window parameters, so that some perception symbols use the same first time window parameter, and some perception symbols use different first time window parameters. Alternatively, each perception symbol is configured independently, so that the first time window corresponding to each perception symbol is configured flexibly.

[0029] In a possible design, the receiving moment of the sensing signal can be equal to the sending moment of the sensing signal. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal and a time offset. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal, a time offset, and a cyclic prefix (CP) length.

[0030] The present application provides various manners of determining the receiving moment of the sensing signal, so that the receiving moment of the sensing signal can be accurately determined in different scenarios, and the first time window can be accurately determined.

[0031] In a second aspect, a communication method is provided, which is applied to a second network side device. The second network side device can be a network device, a component (for example, a processor, a circuit, a chip, or a chip system) of the network device, or a logic module or software that can implement all or part of the network device functions. For example, the second network side device can be a DU. The method can include: sending first information. The first information can be used to indicate a first time window. The first time window can be a time window corresponding to sending, by a first network side device, first data. The first data can be determined based on a sensing signal. For example, the first network side device processes the sensing signal to obtain the first data. The first data is received.

[0032] In a possible design, the first information can include a first time window parameter. For example, the first time window parameter can be determined based on a sensing QoS requirement and / or second information. The second information can be used to indicate a resource usage of the second network side device. The method can further include: determining the first time window based on a receiving moment of the sensing signal, a first time length, and the first time window parameter. The first time length can be a time length for processing the sensing signal.

[0033] In a possible design, the first time window parameter can include: a first time window length; or, the first time window length and a first offset; or, the first time window length and a second offset; or, the first offset and the second offset. The first time window length can be a length of the first time window. The first offset can be an offset of a starting moment of the first time window relative to an ending moment of the first time length. The second offset can be an offset of an ending moment of the first time window relative to the ending moment of the first time length.

[0034] In a possible design, in a case where the first time window parameter includes the first time window length, the starting moment of the first time window can be greater than or equal to the sum of the minimum value of the receiving moment of the sensing signal and the first time length. The ending moment of the first time window can be less than or equal to the sum of the receiving moment of the sensing signal, the maximum value of the first time length, and the first time window length.

[0035] In a possible design, when the first time window parameter includes a first time window length and a first offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, the first offset, and the first time window length.

[0036] In a possible design, when the first time window parameter includes a first time window length and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the second offset, and subtracting the first time window length. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0037] In a possible design, when the first time window parameter includes a first offset and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0038] In a possible design, the first time window can be one first time window corresponding to M sensing symbols. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. Determining the first time window according to the reception time of the sensing signal, the first time length, and the first time window parameter can include determining the first time window according to the reception time of an i th sensing symbol, the first time length, and the first time window parameter. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0039] In a possible design, the first time window can include M first time windows corresponding to M sensing symbols respectively. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. Determining the first time window according to the reception time of the sensing signal, the first time length, and the first time window parameter can include determining, for an i th sensing symbol, a first time window corresponding to the i th sensing symbol according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. Transmitting the first data based on the first time window can include transmitting, for the i th sensing symbol, first data corresponding to the i th sensing symbol based on the first time window corresponding to the i th sensing symbol. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0040] In a possible design, the M sensing symbols correspond to the same first time window respectively. Alternatively, the M sensing symbols correspond to different first time windows respectively.

[0041] In a possible design, in the case that the M sensing symbols correspond to different first time windows respectively, the first time window parameters can include N first time window parameters. N is a positive integer less than or equal to M.

[0042] In a possible design, the receiving time of the sensing signal can be equal to the sending time of the sensing signal. Alternatively, the receiving time of the sensing signal can be equal to the sum of the sending time of the sensing signal and a time offset. Alternatively, the receiving time of the sensing signal can be equal to the sum of the sending time of the sensing signal, a time offset and a CP length.

[0043] In a possible design, the method further includes: determining a second time window according to the first time window and a second time length. The second time length can be a communication delay between the first network-side device and the second network-side device. The receiving the first data can include: receiving the first data based on the second time window.

[0044] The second network-side device provided in this application can determine a second time window for receiving the first data according to the first time window, so as to ensure that the second network-side device can accurately receive the first data and ensure communication efficiency.

[0045] In a possible design, in the case that the first time window parameters include a first time window length, the start time of the second time window can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length and the receiving time of the sensing signal. The end time of the second time window can be greater than or equal to the sum of the maximum value of the first time length, the maximum value of the second time length, the first time window length and the receiving time of the sensing signal.

[0046] The application provides a manner of determining the start time and the end time of the second time window in the case that the first time window parameters include the first time window length, so as to ensure that the second network-side device receives the first data based on the accurate second time window in this scenario, and ensure communication efficiency.

[0047] In a possible design, in the case that the first time window parameters include a first time window length and a first offset, the start time of the second time window can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length, the first offset and the receiving time of the sensing signal. The end time of the second time window can be greater than or equal to the sum of the maximum value of the first time length, the first offset, the first time window length and the maximum value of the second time length.

[0048] The application provides a manner for determining a starting moment and an ending moment of a second time window in a case where the first time window parameter comprises a first time window length and a first offset. In this case, the second network side device can receive the first data based on the accurate second time window, and communication efficiency is ensured.

[0049] In a possible design, in a case where the first time window parameter comprises a first time window length and a second offset, the starting moment of the second time window can be less than or equal to a sum of the receiving moment of the sensing signal, a minimum value of the first time length, a minimum value of the second time length, and the second offset, minus the first time window length. The ending moment of the second time window can be greater than or equal to a sum of the receiving moment of the sensing signal, a maximum value of the first time length, a maximum value of the second time length, and the second offset.

[0050] The application provides a manner for determining a starting moment and an ending moment of a second time window in a case where the first time window parameter comprises a first time window length and a first offset. In this case, the second network side device can receive the first data based on the accurate second time window, and communication efficiency is ensured.

[0051] In a possible design, in a case where the first time window parameter comprises a first offset and a second offset, the starting moment of the second time window can be less than or equal to a sum of the receiving moment of the sensing signal, a minimum value of the first time length, and a minimum value of the second time length, plus the first offset. The ending moment of the second time window can be greater than or equal to a sum of the receiving moment of the sensing signal, a maximum value of the first time length, and a maximum value of the second time length, plus the second offset.

[0052] The application provides a manner for determining a starting moment and an ending moment of a second time window in a case where the first time window parameter comprises a first offset and a second offset. In this case, the second network side device can receive the first data based on the accurate second time window, and communication efficiency is ensured.

[0053] The second network side device determining the first time window can be regarded as part of determining the second time window. For example, the second network side device determines the first time window, and then determines the second time window based on the first time window, a maximum value of the second time length, and a minimum value of the second time length.

[0054] In a third aspect, a communication apparatus is provided, which can be a first network-side device (e.g., a network equipment implementing a function of the first network-side device), a communication module in the network equipment implementing the function of the first network-side device, or a chip in the network equipment implementing the function of the first network-side device responsible for communication function, e.g., a modem chip (also known as a baseband chip), a system on chip (SoC) including a modem module, or a system in package (SIP) chip. The communication apparatus can also be a logic module or software capable of implementing all or part of the function of the first network-side device. The communication apparatus can include a processing unit configured to obtain first information. The first information can be used to indicate a first time window. The processing unit is further configured to control a transceiver to transmit first data based on the first time window. For example, the first data can be determined based on the sensing signal.

[0055] In a possible design, the first information can include a first time window parameter. The first time window parameter can be determined based on the sensing QoS requirement and / or second information. The second information can be used to indicate a resource usage of a second network-side device. The processing unit is further configured to determine the first time window based on a reception time of the sensing signal, a first time duration, and the first time window parameter. The first time duration can be a time duration for processing the sensing signal.

[0056] In a possible design, the first time window parameter can include: a first time window length; or, the first time window length and a first offset; or, the first time window length and a second offset; or, the first offset and the second offset. The first time window length can be a length of the first time window. The first offset can be an offset of a start time of the first time window relative to an end time of the first time duration. The second offset can be an offset of an end time of the first time window relative to the end time of the first time duration.

[0057] In a possible design, in the case where the first time window parameter includes the first time window length, the start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal and a minimum of the first time duration. The end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum of the first time duration, and the first time window length.

[0058] In a possible design, in the case where the first time window parameter includes the first time window length and the first offset, the start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum of the first time duration, and the first offset. The end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum of the first time duration, the first offset, and the first time window length.

[0059] In a possible design, when the first time window parameter includes a first time window length and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the second offset, and minus the first time window length. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0060] In a possible design, when the first time window parameter includes a first offset and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal and the first offset, and a minimum value of the first time length. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal and the second offset, and a maximum value of the first time length.

[0061] In a possible design, the first time window can be one first time window corresponding to the M sensing symbols. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. The processing unit is further configured to determine the first time window according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0062] In a possible design, the first time window can include M first time windows corresponding to the M sensing symbols respectively. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. The processing unit is further configured to determine, for the i th sensing symbol, a first time window corresponding to the i th sensing symbol according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. For the i th sensing symbol, the transceiver is controlled to send first data corresponding to the i th sensing symbol based on the first time window corresponding to the i th sensing symbol. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0063] In a possible design, the M first time windows corresponding to the M sensing symbols are the same. Alternatively, the M first time windows corresponding to the M sensing symbols are partially or totally different.

[0064] In a possible design, when the M first time windows corresponding to the M sensing symbols are partially or totally different, the first time window parameter can be N first time window parameters. N is a positive integer less than or equal to M.

[0065] In a possible design, the receiving moment of the sensing signal can be equal to the sending moment of the sensing signal. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal and a time offset. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal, a time offset, and a CP length.

[0066] In a fourth aspect, a communication apparatus is provided. The communication apparatus can be a second network side device (e.g., a network device implementing a function corresponding to the second network side device), a communication module in the network device implementing the function corresponding to the second network side device, or a chip responsible for the communication function in the network device implementing the function corresponding to the second network side device, such as a modem chip (also referred to as a baseband chip) or a SoC or SIP chip including a modem module. The communication apparatus can also be a logic module or software capable of implementing all or part of the function of the second network side device. The communication apparatus can include a transceiver configured to send first information. The first information can be used to indicate a first time window. The first time window can be a time window corresponding to sending, by a first network side device, first data. The first data can be determined based on a sensing signal. For example, the first network side device processes the sensing signal to obtain the first data. The transceiver is further configured to receive the first data.

[0067] In a possible design, the first information can include a first time window parameter. The first time window parameter can be determined based on a sensing QoS requirement and / or second information. The second information can be used to indicate a resource usage of the second network side device. The apparatus further includes a processing unit configured to determine the first time window based on a receiving moment of the sensing signal, a first time length, and the first time window parameter. The first time length can be a time length for processing the sensing signal.

[0068] In a possible design, the first time window parameter can include: a first time window length; or the first time window length and a first offset; or the first time window length and a second offset; or the first offset and the second offset. The first time window length can be a length of the first time window. The first offset can be an offset of a starting moment of the first time window relative to an ending moment of the first time length. The second offset can be an offset of an ending moment of the first time window relative to the ending moment of the first time length.

[0069] In a possible design, in a case where the first time window parameter includes the first time window length, the starting moment of the first time window can be greater than or equal to the sum of the minimum of the receiving moment of the sensing signal and the first time length. The ending moment of the first time window can be less than or equal to the sum of the receiving moment of the sensing signal, the maximum of the first time length, and the first time window length.

[0070] In a possible design, when the first time window parameter includes a first time window length and a first offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, the first offset, and the first time window length.

[0071] In a possible design, when the first time window parameter includes a first time window length and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the second offset, and minus the first time window length. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0072] In a possible design, when the first time window parameter includes a first offset and a second offset, a start time of the first time window can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. An end time of the first time window can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset.

[0073] In a possible design, the first time window can be one first time window corresponding to the M sensing symbols. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. The processing unit is further configured to determine the first time window according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0074] In a possible design, the first time window can include M first time windows corresponding to the M sensing symbols respectively. The sensing signal can include the M sensing symbols. Accordingly, the first data can be determined based on the M sensing symbols. M is a positive integer. The processing unit is further configured to determine, for the i th sensing symbol, a first time window corresponding to the i th sensing symbol according to the reception time of the i th sensing symbol, the first time length, and the first time window parameter. The first data is transmitted based on the first time window, which can include transmitting, for the i th sensing symbol, first data corresponding to the i th sensing symbol based on the first time window corresponding to the i th sensing symbol. The i th sensing symbol is any one of the M sensing symbols. i is a positive integer less than or equal to M.

[0075] In a possible design, the first time window corresponding to the M sensing symbols is the same. Alternatively, the first time window corresponding to the M sensing symbols is partially or totally different.

[0076] In a possible design, when the M sensing symbols correspond to different first time window portions respectively, the first time window parameters can include N first time window parameters. N is a positive integer less than or equal to M.

[0077] In a possible design, the receiving moment of the sensing signal can be equal to the sending moment of the sensing signal. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal and a time offset. Alternatively, the receiving moment of the sensing signal can be equal to the sum of the sending moment of the sensing signal, a time offset, and a CP length.

[0078] In a possible design, the processing unit is further configured to: determine a second time window according to the first time window and a second time length, where the second time length can be a communication time delay between the first network-side device and the second network-side device; and control the transceiver to receive the first data based on the second time window.

[0079] In a possible design, when the first time window parameters include a first time window length, the start moment of the second time window can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length, and the receiving moment of the sensing signal. The end moment of the second time window can be greater than or equal to the sum of the maximum value of the first time length, the maximum value of the second time length, the first time window length, and the receiving moment of the sensing signal.

[0080] In a possible design, when the first time window parameters include a first time window length and a first offset, the start moment of the second time window can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length, the first offset, and the receiving moment of the sensing signal. The end moment of the second time window can be greater than or equal to the sum of the maximum value of the first time length, the first offset, the first time window length, and the maximum value of the second time length.

[0081] In a possible design, when the first time window parameters include a first time window length and a second offset, the start moment of the second time window can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length, the second offset, and the receiving moment of the sensing signal, minus the first time window length. The end moment of the second time window can be greater than or equal to the sum of the maximum value of the first time length, the second offset, and the maximum value of the second time length.

[0082] In a possible design, when the first time window parameter includes a first offset and a second offset, the start time of the second time window can be less than or equal to a minimum value of the receiving time of the sensing signal, the first time length, and a sum of the first offset and the minimum value of the second time length. The end time of the second time window can be greater than or equal to a maximum value of the receiving time of the sensing signal, the second time length, and a sum of the second offset and the maximum value of the first time length.

[0083] In a fifth aspect, a communication apparatus is provided. The communication apparatus can be a first network-side device (e.g., a network equipment implementing the functions of the first network-side device), a communication module in the network equipment implementing the functions of the first network-side device, or a chip responsible for communication in the network equipment implementing the functions of the first network-side device, such as a modem chip (also referred to as a baseband chip) or a SoC or SIP chip including a modem module. The communication apparatus can also be a logic module or software capable of implementing all or part of the functions of the first network-side device.

[0084] The communication apparatus can include a processor configured to cause the apparatus to perform the method in the first aspect and various possible implementations of the first aspect by executing computer programs (or computer-executable instructions) stored in a memory and / or by a logic circuit.

[0085] In a possible implementation, the apparatus further includes a memory.

[0086] In a possible implementation, the processor and the memory are integrated together.

[0087] In another possible implementation, the memory is located outside the communication apparatus.

[0088] In a possible implementation, the communication apparatus further includes a communication interface configured to enable the communication apparatus to communicate with other devices, for example, to send or receive data and / or signals. For example, the communication interface can be a transceiver, a circuit, a bus, a module, or another type of communication interface.

[0089] In a sixth aspect, a communication apparatus is provided. The communication apparatus can be a second network-side device (e.g., a network equipment implementing the functions of the second network-side device), a communication module in the network equipment implementing the functions of the second network-side device, or a chip responsible for communication in the network equipment implementing the functions of the second network-side device, such as a modem chip (also referred to as a baseband chip) or a SoC or SIP chip including a modem module. The communication apparatus can also be a logic module or software capable of implementing all or part of the functions of the second network-side device.

[0090] The communication apparatus can comprise a processor configured to cause the apparatus to perform the method according to the second aspect and any possible implementation of the second aspect.

[0091] In a possible implementation, the apparatus further comprises a memory.

[0092] In a possible implementation, the processor and the memory are integrated.

[0093] In another possible implementation, the memory is located outside the communication apparatus.

[0094] In a possible implementation, the communication apparatus further comprises a communication interface configured to enable the communication apparatus to communicate with other devices, such as transmitting or receiving data and / or signals. For example, the communication interface can be a transceiver, a circuit, a bus, a module or other types of communication interface.

[0095] In a seventh aspect, a communication system is provided. The system comprises a first network-side apparatus configured to perform the method according to the first aspect and any possible implementation of the first aspect, and a second network-side apparatus configured to perform the method according to the second aspect and any possible implementation of the second aspect.

[0096] In an eighth aspect, a chip is provided. The chip comprises an interface circuit and one or more processors. The one or more processors are coupled with a memory. The memory is configured to store part or all of the computer program or instructions necessary to implement the functions of the first aspect and the second aspect. The one or more processors are configured to execute the computer program or instructions, which when executed cause the communication apparatus to perform the method according to any possible implementation of the first aspect and the second aspect. The interface circuit is configured to enable communication within the communication apparatus and / or between the communication apparatus and other apparatuses or components.

[0097] In a ninth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer instructions. When the computer instructions are run on a computer, the computer is caused to perform the communication method according to any aspect described above.

[0098] In a tenth aspect, a computer program product is provided. The computer program product comprises computer program or instructions. When the computer program or instructions are run on a computer, the computer is caused to perform the communication method according to any aspect described above.

[0099] The method in any of the above second aspect to the tenth aspect has the corresponding beneficial effects, which can refer to the description of the beneficial effects of the methods in the first aspect, and the present application will not repeat them here. BRIEF DESCRIPTION OF DRAWINGS

[0100] FIG. 1 is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied;

[0101] FIG. 2 is a schematic diagram of a function split of a communication protocol between a BBU and a RRU according to an embodiment of the present application;

[0102] FIG. 3 is a schematic diagram of an architecture of a radio access network according to an embodiment of the present application;

[0103] FIG. 4 is a schematic diagram of another architecture of a radio access network according to an embodiment of the present application;

[0104] FIG. 5 is a schematic diagram of a function split of an access network device according to an embodiment of the present application;

[0105] FIG. 6 is a schematic diagram of a sensing scenario according to an embodiment of the present application;

[0106] FIG. 7 is a schematic diagram of another sensing scenario according to an embodiment of the present application;

[0107] FIG. 8 is a schematic diagram of uplink and downlink latency according to an embodiment of the present application;

[0108] FIG. 9 is a schematic diagram of a relationship between peak bandwidth and time according to an embodiment of the present application;

[0109] FIG. 10 is a schematic diagram of a communication scenario according to an embodiment of the present application;

[0110] FIG. 11 is a schematic diagram of a network architecture according to an embodiment of the present application;

[0111] FIG. 12 is a schematic diagram of a communication method according to an embodiment of the present application;

[0112] FIG. 13 is a schematic diagram of a first time window according to an embodiment of the present application;

[0113] FIG. 14 is a schematic diagram of another communication method according to an embodiment of the present application;

[0114] FIG. 15 is a schematic diagram of a first time window and a second time window according to an embodiment of the present application;

[0115] FIG. 16 is a schematic diagram of another first time window and a second time window according to an embodiment of the present application;

[0116] FIG. 17 is a schematic diagram of still another first time window and a second time window according to an embodiment of the present application;

[0117] FIG. 18 is a schematic diagram of another communication scenario according to an embodiment of the present application;

[0118] FIG. 19 is a schematic diagram of another network architecture according to an embodiment of the present application;

[0119] FIG. 20 is a schematic diagram of another communication method according to an embodiment of the present application;

[0120] FIG. 21 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0121] FIG. 22 is a schematic diagram of another communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0122] FIG. 1 is a schematic diagram of an architecture of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110), and can further include at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1). The terminals 120 are connected to the RAN nodes 110 in a wireless manner. Terminals and terminals, and RAN nodes and RAN nodes can be connected to each other in a wired or wireless manner. The communication system 1000 can further include a core network 200. The RAN nodes 110 are connected to the core network 200 in a wireless or wired manner. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network devices and the logical functions of the RAN nodes. The communication system 1000 can further include the Internet 300.

[0123] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a future communication network, and a future wireless access system defined in the 3rd generation partnership project (3GPP). The RAN 100 can further include two or more different wireless access systems described above. The RAN 100 can also be an open RAN (O-RAN).

[0124] A RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is configured to help a terminal to access a communication system through wireless means. In one application scenario, the RAN node can be a base station (BS), an evolved Node B (eNodeB / eNB), a transmission reception point (TRP), a generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a future base station in a future communication network, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), a micro base station or an indoor station (e.g., 110b in FIG. 1), a relay node, or a donor node.

[0125] In another application scenario, a terminal can access a communication system through wireless means with the help of cooperation among a plurality of RAN nodes, each of which implements part of functionalities of a base station. For example, the RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The RU can also be referred to as a radio frequency unit. The CU here implements functionalities of a radio resource control protocol and a packet data convergence protocol (PDCP) of a base station, and can further implement functionalities of a service data adaptation protocol (SDAP). The DU implements functionalities of a radio link control layer and a medium access control (MAC) layer of a base station, and can further implement functionalities of part of a physical layer or the whole physical layer. Details of the protocol layers described above can be referred to relevant technical specifications of the 3GPP. The RU can be configured to implement functionalities of transceiving radio frequency signals. The CU and the DU can be two independent RAN nodes, or can be integrated in one RAN node, e.g., in a baseband unit (BBU). The RU can be included in a radio frequency device, e.g., in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes, i.e., a CU-control plane and a CU-user plane.

[0126] The RAN node can have different names in different systems, for example, in an open radio access network (O-RAN) system, the CU can be referred to as an open CU (O-CU), the DU can be referred to as an open DU (O-DU), and the RU can be referred to as an open RU (O-RU). The RAN node in the embodiments of the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. For example, the RAN node can be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific device form of the RAN node. For ease of description, a base station is described as an example of the RAN node in the following.

[0127] A terminal is a device with wireless transceiving function, which can send a signal to a base station or receive a signal from a base station. The terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely applied in various scenarios, such as device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiving function, wearable device, vehicle, airplane, ship, robot, mechanical arm, smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form of the terminal.

[0128] In some examples, the core network 200 can include an access and mobility management function (AMF) entity, a session management function (SMF) entity, a user plane function (UPF) entity, a sensing service control function (SSCF), a sensing data processing function (SDPF), a unified data management (UDM), etc. any core network device.

[0129] The base station and the terminal can be fixed in position or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; can also be deployed on an airplane, balloon and artificial satellite. Embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0130] The roles of the base station and the terminal can be relative, for example, the helicopter or the unmanned aerial vehicle 120i in FIG. 1 can be configured as a mobile base station, and for those terminals 120j that access the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through a wireless air interface protocol. Of course, 110a and 120i can also communicate through a base station-to-base station interface protocol, at this time, 120i is also a base station relative to 110a. Therefore, the base station and the terminal can be collectively referred to as a communication device, 110a and 110b in FIG. 1 can be referred to as a communication device with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.

[0131] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed frequency spectrum, or through an unlicensed frequency spectrum, or through both a licensed frequency spectrum and an unlicensed frequency spectrum; can communicate through a frequency spectrum below 6 gigahertz (GHz), or through a frequency spectrum above 6 GHz, or through both a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz. Embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

[0132] In embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station, or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation and smart city. The functions of the terminal can also be performed by a module (such as a chip or modem) in the terminal, or by a device containing terminal functions.

[0133] In a wireless communication system, communication devices can utilize air interface resources for wireless communication. The communication devices can include network devices and terminal devices, and the network devices can also be referred to as base station devices, i.e., the wireless access network devices mentioned above. The air interface resources can include at least one of time domain resources, frequency domain resources, code resources and spatial resources. The communication devices can also be referred to as communication apparatuses.

[0134] The scheme provided in the embodiments of the present application can be applied to wireless communication between communication devices. The wireless communication can include wireless communication between a network device and a terminal, wireless communication between network devices, and wireless communication between terminals. In the embodiments of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission" or "transmission".

[0135] In a global system for mobile communications (GSM), wideband code division multiple access (WCDMA), universal mobile telecommunications system (UMTS), long term evolution (LTE) and a 5G system, a base station can be divided into two functional entities, BBU and RRU, for deployment in accordance with a bottom-layer splitting manner. The bottom-layer splitting manner can be a splitting manner of a physical layer and a radio frequency part. It can be understood that "splitting" and "dividing" can be used interchangeably in the embodiments of the present application. The BBU is connected to one or more RRUs through optical fibers, metal wiring or microwave links. The BBU mainly completes centralized processing of upper layers of baseband signals. The RRU mainly completes reception and transmission of baseband signals, and functions such as modulation and demodulation of radio frequency signals, data processing and power amplification. The RRU is closer to the antenna and has smaller feeder loss. In some cases, the RRU can also be referred to as RU or AAU. The interface between the BBU and the RRU can be referred to as a front-haul interface or a bottom-layer splitting interface.

[0136] Referring to FIG. 2, a schematic diagram of a communication protocol function division between a BBU and a RRU is shown. In the related art, an interface between a BBU and a RRU can use a common public radio interface (CPRI) protocol to communicate with each other. The CPRI protocol defines a key communication interface specification between a radio equipment control (REC) and a radio equipment (RE) in a wireless communication network. For example, the REC can be considered as the aforementioned BBU, and the radio equipment can be considered as the aforementioned RRU. As can be seen from FIG. 2, the CPRI interface divides radio frequency (RF) layer functions to the RRU 1, and divides physical (PHY) layer and above protocol layer functions to the BBU 1. The PHY layer can be further divided into a PHY high layer (High PHY) and a PHY low layer (Low PHY). The PHY layer and above protocol layer functions can include a radio resource control (RRC) layer, an SDAP layer, a PDCP layer, a radio link control (RLC) layer, and a MAC layer.

[0137] Since the amount of data transmitted between the PHY layer of the BBU and the RF layer of the RRU is directly related to the size of the antenna array. The splitting manner specified in the CPRI protocol can cause the amount of data on the fronthaul interface to be too large, and cannot support a large-scale antenna array scenario. For example, assuming that a 9.8 gigabits per second (Gbps) optical fiber is used on the fronthaul interface of the CPRI protocol to carry 2 4 transmit and 4 receive (4T4R) antennas, and a cell with a wireless bandwidth of 20 megahertz (MHz). For a cell with 64 antennas and a bandwidth of 100 MHz, approximately 32 9.8 Gbps optical fibers need to be deployed on the CPRI interface.

[0138] In some scenarios, an evolution of the CPRI protocol is proposed, namely an enhanced CPRI protocol, denoted as eCPRI. Still referring to FIG. 2, the eCPRI protocol makes a finer division of the communication protocol of the wireless network, such as dividing the PHY layer into a PHY high layer and a PHY low layer. The PHY low layer is deployed in the RRU, and the PHY high layer is deployed into the BBU. And the interface specification between the BBU and the RRU, i.e., between the PHY high layer and the PHY low layer, is re-formulated. The eCPRI protocol converts the interface between the BBU and the RRU from the interface between the RF layer and the PHY layer as specified in the CPRI protocol into an interface between the PHY high layer and the PHY low layer, so that the original fiber communication between the RF layer and the PHY layer is converted into communication within the board or within the field programmable gate array (FPGA) chip inside the RRU. And the data dimension of the communication between the PHY high layer of the BBU and the PHY low layer of the RRU is reduced, and is no longer directly related to the size of the antenna array on the RRU.

[0139] The splitting manner adopted by the above CPRI interface or eCPRI interface enables the BBU to process the baseband signal in a highly centralized manner, so that the computing resources can be deployed in a centralized manner, resulting in high resource utilization and low deployment cost. However, the above-mentioned splitting manner requires a large bandwidth of the fronthaul link and has a high deployment cost of optical fiber.

[0140] Referring to FIG. 3, a new RAN architecture that can be applied in future communication systems is proposed. In this architecture, the functions of the base station are re-divided into RU functions, radio network area (RNA) functions, and RNA automation functions. Among them, the RNA functions and the RU functions communicate through a low layer split (LLS) interface, and the RU functions and the terminals can establish a RAN-UE interface to communicate. The RNA functions and the core network (CN) can communicate through a RAN-CN interface. The RAN automation functions can manage the RU functions and the RNA functions through a network function (NF) management interface. The RAN automation functions can be controlled through network management. In this architecture, the RU functions can be regarded as the aforementioned RRU or AAU, and the RNA functions can be regarded as the aforementioned BBU.

[0141] In the related art, in order to reduce the pressure of the underlying split mode on the bandwidth of the fronthaul link and the deployment cost, 3GPP proposes a base station function division mode. For example, for gNB in 5G, a high layer split mode is adopted to split the base station into two function entities such as CU and DU. The midhaul link between CU and DU has lower network bandwidth demand, and the radio access network shown in FIG. 4 is divided into CU and DU. For example, the access network device can be a gNB, which can be composed of CU and DU. Of course, the DU can include one or more, which is not limited in the embodiments of the present application. The gNB and the core network element of the 5G core network (5G core network, 5GC) can communicate through the next generation interface (next generation, NG) interface. Different gNBs can communicate through the Xn interface, for example, through the Xn-control (control, C) interface. The CU and the different DUs can communicate through the F1 interface.

[0142] Among them, for the function split between CU and DU in the access network device, a static split mode is adopted, and fixed division is performed according to the protocol stack function granularity. As shown in FIG. 5, the RLC layer, the MAC layer and the PHY layer and the like protocol stack can be located in the DU of the access network device. Among them, the MAC layer can also be referred to as the medium access control, the medium access control, and the like, which is not limited in the embodiments of the present application. The RRC layer, the SDAP layer and the PDCP layer and the like protocol stack can be located in the CU of the access network device. Among them, RRC realizes air interface radio resource and air interface connection control, which belongs to the control plane (control plane, CP) protocol; SDAP performs mapping between quality of service flow (quality of service flow, QoS-flow) and data radio bearer (data radio bearer, DRB), which belongs to the user plane (user plane, UP) protocol. QoS-flow represents a service data flow with specific quality of service (quality of service, QoS) requirements.

[0143] As can be seen from FIG. 5, for the DU, the control plane protocol stack or the user plane protocol stack involves RLC, MAC and PHY. For the CU, PDCP is applicable to the control plane protocol stack and the user plane protocol stack, RRC corresponds to the control plane protocol stack, and SDAP corresponds to the user plane protocol stack. For performing the control plane protocol stack function, the CU and the DU can communicate through the F1-C interface; for performing the user plane protocol stack function, the CU and the DU can communicate through the F1-user (U) interface. On the basis of separation of the CU and the DU, the CU of the access network device can further be separated into a CP unit and a UP unit. The CP of the CU of the access network device can be denoted as gNB-CU-CP, and the UP of the CU of the access network device can be denoted as gNB-CU-UP. The PDCP layer protocol exists on both the gNB-CU-CP unit and the gNB-CU-UP unit, while the RRC layer is located above the PDCP layer in the gNB-CU-CP unit, and the SDAP layer is located above the PDCP layer in the gNB-CU-UP unit.

[0144] The RLC layer can provide transparent data transmission and non-deterministic mode and deterministic mode data transmission. The MAC layer is mainly responsible for controlling the physical medium connected to the physical layer. The PHY layer is responsible for transmitting bits or bit groups on the physical medium, including encoding the transmitted information and decoding the received information.

[0145] In a communication and perception integrated (or communication, perception integrated, communication perception integrated, communication perception integrated, etc.) scenario, a device A can transmit a communication signal or a perception signal. For the perception signal, there are two cases of self-transmission and self-reception, and self-transmission and other-reception. For example, a device B can receive a perception signal transmitted by the device A, or the device B can receive a back wave signal of the perception signal transmitted by the device A to perceive and identify possible objects in the surrounding environment. As shown in FIG. 6, taking a gNB1 transmitting a perception signal as an example, a terminal or a gNB2 can receive the perception signal. Alternatively, the device A can receive a back wave of the perception signal transmitted by itself and perform signal processing on the back wave to perceive and identify possible objects in the surrounding environment. As shown in FIG. 7, taking a gNB3 transmitting a perception signal as an example, the gNB3 can still receive the perception signal. It can be understood that FIGS. 6 and 7 only show the case of the network device transmitting the perception signal, and in other examples, a terminal can also transmit the perception signal. The network device can receive the perception signal transmitted by the terminal, or the network device can receive a back wave signal of the perception signal transmitted by the terminal.

[0146] Currently, for a communication signal, the RU can transmit and / or receive the communication signal according to the configuration of the uplink and downlink resources in a specific frame structure, respectively, and based on the configuration. For example, the RU can be instructed to transmit the downlink sensing signal and / or receive the uplink sensing signal (or the echo signal of the sensing signal) on the time-frequency resources indicated by the frame identifier, the subframe identifier, the slot identifier, the symbol identifier, the resource block (RB) identifier, and the like. For example, the frame structure can represent the time domain resource position used by the RU to transmit the signal over the air interface. One frame structure can be composed of multiple subframes, slots, and / or symbols. Assuming that the RU is configured in units of subframes, uplink subframes, downlink subframes, and special subframes can be set. Among them, the special subframe can be a part of the subframe that can be dynamically configured as an uplink subframe or a downlink subframe according to actual conditions. Of course, in other examples, resource configuration can also be performed using symbols, frames, slots, and the like, and the specific configuration can be set according to actual conditions, which is not limited in the embodiments of the present application.

[0147] Referring to FIG. 8, the access network device can include a DU and an RU, for example. Of course, it can also include a CU, which is not limited in the embodiments of the present application. There is a communication delay, such as T12 and T34, between the front link of the DU and the RU. And the delay fluctuates. And the RU internally processes data, which also has a certain delay, such as T2a and Ta3. The delay may also fluctuate. As shown in FIG. 8, the position of the data sent by the DU is R1, and the position of the data received by the RU is R2. The transmission delay of the data sent by the DU to the RU can be denoted as T12. Similarly, the position of the data sent by the RU is R3, and the position of the data received by the DU is R4. The transmission delay of the data sent by the RU to the DU can be denoted as T34. Because the above-mentioned delay fluctuates, the data on the front link between the RU and the DU cannot be received at a fixed time. Therefore, in related technologies, the delay management model of the front interface is proposed in the O-RAN and eCPRI 2.0 protocols. So that the DU and the RU can accurately receive the data sent on the front interface.

[0148] The above-mentioned time delay management model usually takes the antenna interface Ra position of the RU as the reference point, respectively takes the air interface receiving time of the uplink signal at the Ra as the reference time of the uplink signal processing, and takes the air interface sending time of the downlink signal at the Ra as the reference time of the downlink signal processing. The time when the data reaches other positions such as R1, R2, R3 and R4 can be the time corresponding to the time at the Ra. T1a represents the time interval from the DU sending data at R1 to the data (for example, the downlink signal obtained after the RU internally processes the data) being sent to the air interface at the Ra. T1a can be equal to the sum of T12 and T2a. T2a can be considered as the time interval from the RU receiving data at R2 to the RU internally processing the data and sending the processed downlink signal at the Ra. Similarly, Ta3 is considered as the time interval from the RU receiving the uplink signal at the Ra to the RU internally processing the uplink signal and sending the processed data at R3. Ta4 is similar to T1a, and Ta4 can be equal to the sum of Ta3 and T34. That is, Ta4 represents the time interval from the RU receiving the uplink signal at the Ra to the DU receiving the data obtained after the uplink signal is internally processed by the RU at R4.

[0149] Referring to Table 1, possible parameters corresponding to each time delay in uplink and downlink are given.

[0150] Table 1

[0151] Table 1 takes O-DU, O-RU in the O-RAN scenario and uses the eCPRI protocol as an example. In other examples, it can also be applicable to non-O-RAN scenarios such as DU, RU, etc., and the embodiments of the present application are not limited here.

[0152] Because the uplink and downlink communication delay between the DU and the RU fluctuates, and the processing delay within the RU also fluctuates, the T12 and T34 have maximum and minimum values, such as T12max, T12min, T34max and T34min. Of course, in combination with Table 1, it can be seen that the processing delay within the RU can also have a maximum and minimum value, such as T2amax and T2amin related to the downlink, and Ta3max and Ta3min related to the uplink. Correspondingly, for the DU, the downlink sending time T1a and the uplink receiving time Ta4 also have maximum and minimum values, such as T1amax, T1amin, Ta4max and Ta4min. Then T1amax and T1amin can constitute a time window for the DU to send downlink data, and T2amax and T2amin can constitute a time window for the RU to receive downlink data. Similarly, Ta3max and Ta3min can constitute a time window for the RU to send uplink data, and Ta4max and Ta4min can constitute a time window for the DU to receive uplink data. The above time windows can be summarized in Table 2.

[0153] Table 2

[0154] The above configuration is generally configured for communication signals. In the process of sending communication signals, the time of sending downlink communication signals on the air interface and the time of uplink communication signals from the air interface can generally be determined in the above manner. The time of sending data by the RU on the front-haul interface and the time of receiving data by the DU can also be determined in the above manner. For communication signals, the delay requirement is very strict, so only the processing delay of the signal within the RU is considered for the time of sending by the RU on the front-haul interface. Then, for the case of needing to transmit a large amount of data in a short time, the peak bandwidth requirement will be large. As shown in FIG. 9, for the same amount of data, the shorter the time required for sending, the higher the peak bandwidth requirement. However, the requirement for the delay of a sensing signal is more relaxed than that of a communication signal. Therefore, the data obtained after processing the sensing signal can be sent in a relatively long time period. For example, the data can be sent in a certain period of time, and there is no need to require the RU to send immediately after processing the sensing signal.

[0155] It can be seen that if the sensing data is sent in the manner of communication signals, the receiving time of the DU and the sending time of the RU on the front-haul interface are not reasonable, which will lead to a large peak bandwidth requirement and is not suitable for the scenario of sensing signals.

[0156] Therefore, an embodiment of the present application provides a communication method, which configures a sending time window suitable for a sensing scenario for the RU, so that the RU sends sensing data in the sending time window, and reduces the requirement for the peak bandwidth.

[0157] The communication method and device are further described below with reference to the drawings. It can be understood that the first network side device and the second network side device are taken as an example to illustrate the execution subject of the interaction in the embodiments of the present application, but the present application is not limited to the execution subject of the interaction. For example, the first network side device and the second network side device can be network devices. The method executed by the network device in the present application can also be implemented by a module (such as a circuit, a processor, a chip or a chip system, etc.) in the network device, or a logic node, a logic module or software capable of realizing all or part of the functions of the network device.

[0158] In the embodiments of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission" or "transmission".

[0159] FIG. 10 is a schematic diagram of a communication scenario provided by an embodiment of the present application.

[0160] As shown in FIG. 10, the access network device can be divided into multiple logical units such as RU 210, DU 220 and CU 230. Of course, the access network device can include one or more RUs 210, one or more DUs 220 and one or more CUs 230. Among them, the CU 230 is connected with the 5GC 240, used to realize the communication with the core network device. In the embodiments of the present application, the core network device can also be referred to as a core network network element.

[0161] Among them, the 5GC 240 can be connected with multiple CUs 230, one CU 230 can also be connected with multiple DUs 220, and one DU 220 can also be connected with multiple RUs 210.

[0162] The access network device can be a gNB. The access network device provides NR user plane and control plane protocol endpoints for the terminal, and communicates with the 5GC 240 through the NG interface. The access network device is used to provide the function of wireless network connection between the terminal and the core network.

[0163] The CU 230 can host the RRC layer, the SDAP layer and the PDCP layer protocols of the access network device and control the operation of one or more DUs. The CU 230 communicates with the DU 220 through the F1 interface.

[0164] The DU 220 can host the RLC layer, the MAC layer and the PHY layer of the access network device, and its operation is controlled by the CU 230. One DU 220 can support one or more cells, and one cell supports one DU 220.

[0165] The RU 210 can be referred to as a wireless unit, a radio frequency unit, or a radio frequency remote unit, etc. It mainly completes the functions of receiving and transmitting baseband signals, and modulating and demodulating radio frequency signals, data processing, power amplification, etc. The RU can be deployed close to the antenna, and the feeder loss is small.

[0166] The 5GC 240 can include one or more any possible core network entities, such as an AMF entity, an SMF entity, a UPF entity, a UDM entity, etc. The 5GC together with the RAN forms a 5G network, which provides a service channel for users to connect to a data network, a server. Of course, the 5GC 240 can also be replaced by a core network in a future communication system, and the embodiments of the present application are not limited to this.

[0167] The RAN is used to provide a wireless network connection function between the UE and the core network. The RAN can include an access network device such as a gNB. In some cases, the access network device can refer to the entire RAN. The deployment form of the RAN can include a centralized RAN (CRAN) and a distributed RAN (DRAN). Among them, the CRAN adopts a BBU and RRU separation architecture, each BBU is located in the central machine room to form a BBU pool. It communicates with the RRU through the front network. The DRAN adopts a BBU and RRU distributed deployment, each BBU is separately deployed in a cabinet, and the RRU can be deployed together with the BBU in the cabinet, or the RRU is deployed close to the antenna on the tower.

[0168] In some examples, the RU 210, the DU 220, and the CU 230 can be deployed on the same physical device, or can be separately deployed on different physical devices. Alternatively, part of the logic units in the RU 210, the DU 220, and the CU 230 are deployed on the same physical device, and part of the logic units are deployed on different physical devices, and the embodiments of the present application are not limited to this.

[0169] It can be understood that the access network device can also include a case of being split into two logical units, for example, the CU 230 and the DU 220 are deployed on the same physical device, and the CU 230 and the DU 220 can be regarded as a logical unit. Alternatively, the DU 220 and the RU 210 are deployed on the same physical device, and the DU 220 and the RU 210 can be regarded as a logical unit.

[0170] Of course, the present application is not limited to the network architecture of 5G, and the embodiments of the present application are also applicable to LTE networks and future possible network architectures of future communication networks. It should be understood that the embodiments of the present application can be applicable to any network architecture with communication connection capability.

[0171] FIG. 11 is a schematic diagram of a network architecture according to an embodiment of the present application.

[0172] As shown in FIG. 11, the embodiments of the present application can be applied to the network architecture. The network architecture can include a first core network element and a second core network element in a core network. For example, the first core network element can be configured to be responsible for processing of a sensing service. For example, the first core network element can be configured to have functions of initiation of the sensing service, basic configuration of the sensing service, collection and processing of sensing data, opening of a sensing service function, and the like. The first core network element can be referred to as a sensing function (SF) element. For another example, the first core network element can also be referred to as a sensing function node, a sensing service function server, and the like, which are not limited in the embodiments of the present application. The second core network element can be an AMF.

[0173] The network architecture can further include a first network-side device, a second network-side device, a third network-side device, and a fourth network-side device in an access network. For example, the first network-side device can be the RU mentioned above, or gNB-RU, or RAN-RU. The second network-side device can be the DU mentioned above, or gNB-DU, or RAN-DU. The third network-side device can be the CU mentioned above, or gNB-CU, or RAN-CU. Of course, the division manners of the BBU and RRU mentioned above can also be referred to, such as the first network-side device and the third network-side device integrated together. Alternatively, the division manners of the CU and DU can also be referred to, i.e., the first network-side device and the second network-side device integrated together. The embodiments of the present application do not limit the names of the first network-side device, the second network-side device, the third network-side device, and the fourth network-side device.

[0174] In some examples, the fourth network-side device can be an access network device or a logic unit configured to provide a service. For example, the fourth network-side device can be configured to implement a processing function of a sensing service or a sensing signal, such as a channel estimation of the sensing signal, an RVA (range-velocity-angle) spectrum estimation of the sensing signal, and the like. The fourth network-side device can be referred to as a service unit (SU), or an SU node, a sensing service node, a sensing service function entity, and the like, and the embodiments of the present application do not limit the name of the fourth network-side device.

[0175] As can be seen from FIG. 11, the fourth network-side device and the first network-side device have a communication interface for transmitting signals, which can be referred to as an S1 interface. The fourth network-side device and the first core network element have an interface for a data plane and / or a control plane. In some examples, the fourth network-side device and the second network-side device can also have a communication interface for transmitting signals, which can be referred to as an S2 interface. The fourth network-side device and the third network-side device can also have a communication interface for transmitting signals. The third network-side device and the second core network element can have an interface for a data plane and / or a control plane.

[0176] In some examples, the first network-side device and the second network-side device can communicate through an LLS. The first network-side device and the third network-side device can have an F1 interface.

[0177] In the embodiments of the present application, the network-side device can also be referred to as a logical unit, a functional entity, a logical entity, a network-side device, etc., which is not limited herein.

[0178] FIG. 12 is a schematic diagram of a communication method provided by an embodiment of the present application.

[0179] The communication process can be applied to, but not limited to, the communication scenarios shown in FIG. 1 and FIG. 10. And can be applied to the network architecture shown in FIG. 11. The method can be applied to LTE, LTE frequency division duplex (FDD) system, LTE TDD, 5G system or NR system, subsequent evolution of communication system (such as future communication system), V2X, etc., vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., inter-vehicle communication long term evolution (LTE-V), Internet of vehicles, MTC, IoT, inter-machine communication long term evolution (LTE-M), machine to machine (M2M), D2D, etc. Wireless communication scenarios. The first network side device, the second network side device, the third network side device and the fourth network side device involved in the embodiments of the present application can be an access network device. Among them, the first network side device, the second network side device, the third network side device and / or the fourth network side device can be deployed on the same access network device, or can be deployed on different access network devices, and the embodiments of the present application do not limit them. The first core network element and / or the second core network element can be deployed on the same core network device, or can be deployed on different core network devices, and the embodiments of the present application do not limit them.

[0180] Next, the first network side device is taken as RU, the second network side device is taken as DU, the third network side device is taken as CU, the fourth network side device is taken as SU, the first core network element is taken as SF, and the second core network element is taken as AMF. The embodiments of the present application will be described.

[0181] The method can include the following steps:

[0182] S101, the second network side device sends the first information to the first network side device. Correspondingly, the first network side device receives the first information from the second network side device.

[0183] For example, the first information can be used to indicate a first time window. The first time window can be a time window in which the first network-side device transmits the first data. For example, the first data can be in-phase and quadrature components (IQ) data obtained by processing the sensing signal by the first network-side device.

[0184] In some embodiments, the first information can comprise a first time window parameter. The first time window parameter can be used to determine the first time window. For example, the first time window parameter can comprise a first time window length. The first time window length is the length of the first time window. For example, the first time window length can be denoted as W. The unit of W can be frame, subframe, slot, symbol, etc. It can also be second (s), millisecond (ms), microsecond (μs), etc. The embodiments of the present application are not limited here.

[0185] For another example, the first time window parameter can comprise a first time window length and a first offset. The first offset is the offset of the start time of the first time window relative to the end time of the first time length. The first time length is the time length for the first network-side device to process the sensing signal, i.e., the first time length can be considered as the time length for the first network-side device to internally process the sensing signal. For example, T2a, Ta3. Considering that the first time window is the time window in which the first network-side device transmits data to the second network-side device, assuming that the first network-side device is an RU and the second network-side device is a DU, the above-mentioned first time length can be Ta3. For example, the first offset can be denoted as △T, or the first offset can be denoted as △Ts.

[0186] It can be understood that the time in the embodiments of the present application can also be referred to as time.

[0187] Referring to FIG. 13, the sensing signal can comprise sensing symbols 0, 1, 2, etc. The first time length can correspond to “symbol 0 processing”, “symbol 1 processing” and “symbol 2 processing” in FIG. 13. It represents the time length for the RU to internally process the symbols 0, 1 and 2. Then the first offset is the time difference between the start time of the first time window and the end time of the first time length. Of course, FIG. 13 only shows the time difference of the end time of the first time length corresponding to the symbol 0. In other examples, the first offset can also be the time difference of the end time of the first time length corresponding to any other symbol, which is not limited in the embodiments of the present application. Taking the symbol 0 as an example, it can be seen that the time of receiving the symbol 0 and the start time of processing the symbol 0 can not be the same time. Because for the first network-side device, receiving the symbol does not mean that the symbol is immediately processed.

[0188] For another example, the first time window parameter can comprise a first time window length and a second offset. The second offset is an offset of an ending time of the first time window relative to an ending time of the first time length. For example, the second offset can be denoted as △T, or the second offset can be denoted as △Te. It can be understood that if the first time parameter comprises the first offset and does not comprise the second offset, or comprises the second offset and does not comprise the first offset. The first offset and the second offset can be marked by the same symbol, such as △T. However, it should be defined in advance that the △T is an offset of an ending time of the first time window relative to an ending time of the first time length, or an offset of a starting time of the first time window relative to an ending time of the first time length. Referring to FIG. 13, the second offset is a time difference between an ending time of the first time window and an ending time of the first time length.

[0189] For another example, the first time window parameter can comprise a first offset and a second offset. In this case, the first time window parameter can not comprise the first time window length, and can accurately indicate the first time window.

[0190] Embodiments of the present application provide a plurality of ways for the first time window parameter to indicate the first time window, so as to accurately indicate the first time window in a more suitable way in different scenarios.

[0191] S102, the first network side device receives a sensing signal.

[0192] For example, the first network side device can receive an uplink sensing signal. For example, the uplink sensing signal can be a sensing signal sent by another first network side device, or can be a sensing signal sent by a terminal, or can be a back echo signal of a sensing signal sent by the first network side device.

[0193] In some examples, the sensing signal can comprise a plurality of sensing symbols. It can also be considered that the sensing signal is composed of a plurality of sensing symbols.

[0194] S103, the first network side device sends first data to the second network side device based on the first time window. Correspondingly, the second network side device receives the first data from the first network side device.

[0195] For example, the first data can be determined by the first network side device based on the sensing signal received in S102. For example, the first network side device receives the sensing signal and processes the sensing signal to obtain the first data. For the sensing signal comprising a plurality of sensing symbols, the first network side device can process each sensing symbol to obtain the first data corresponding to the sensing symbol.

[0196] In some examples, the first network-side device can determine the first time window according to the first information received in S101. So as to transmit the first data according to the first time window.

[0197] For example, in the case that the first time window parameter includes a first time window length, the starting time of the first time window determined by the first network-side device can be greater than or equal to the sum of the minimum value of the reception time of the sensing signal and the first time length. Assuming that the starting time of the first time window is denoted as T3min. The reception time of the sensing signal is denoted as Tul,i, which represents the reception time of the i-th sensing symbol. And the minimum value of the first time length is denoted as Ta3min. Then the starting time of the above-mentioned first time window can be represented as T3min≥Tul,i+Ta3min. The ending time of the first time window determined by the first network-side device can be less than or equal to the sum of the reception time of the sensing signal, the maximum value of the first time length and the first time window length. Assuming that the ending time of the first time window is denoted as T3max, then the ending time of the first time window can be represented as T3max≤Tul,i+Ta3max+W.

[0198] Wherein, T3min is determined to be greater than or equal to Tul,i+Ta3min because, if the first network-side device receives the uplink sensing signal at Tul,i, then the first data obtained by processing the sensing signal through the front-haul interface to the second network-side device needs to be sent at the earliest after Ta3min. Therefore, the starting time of the first time window should not be earlier than (or later than or equal to) Tul,i+Ta3min. If the starting time of the first time window is earlier than Tul,i+Ta3min (for example, the starting time of the first time window is earlier than Tul,i), the earliest first data can only arrive at R3 at Tul,i+Ta3min, and if the time window is too early, it will cause resource waste, and no data will be sent earlier than Tul,i+Ta3min. Based on the above reasons, T3min can be greater than or equal to Tul,i+Ta3min. In some examples, T3min can be determined as Tul,i+Ta3min.

[0199] Similarly, if T3max is later than Tul,i+Ta3max+W, then for the sensing symbol received at Tul,i+W, if the first data obtained by processing after Ta3max time length, the latest will also arrive at R3 at Tul,i+Ta3max+W. Therefore, the part later than Tul,i+Ta3max+W will not actually have data to send, causing resource waste. Based on the above reasons, T3max can be less than or equal to Tul,i+Ta3max+W. In some examples, T3max can be determined as Tul,i+Ta3max+W.

[0200] In embodiments of the present application, the time when the sensing signal is received at Ra can be regarded as 0 moment, then the time after the sensing signal is received can be regarded as positive value, and the time before the sensing signal is received can be regarded as negative value. The greater the time value represents the later the 0 moment, and the smaller the time value represents the earlier the 0 moment. Of course, in other examples, the time when the sensing signal is sent at Ra can also be regarded as 0 moment, which is not limited in the embodiments of the present application.

[0201] For another example, in the case where the first time window parameter includes the first time window length and the first offset, the starting moment of the first time window determined by the first network side device can be greater than or equal to the sum of the minimum value of the first time length and the first offset of the reception moment of the sensing signal. For example, the starting moment of the first time window can be represented as T3min≥Tul,i+Ta3min+△Ts, or represented as T3min≥Tul,i+Ta3min+△T. The ending moment of the first time window determined by the first network side device can be less than or equal to the sum of the maximum value of the first time length and the first offset. For example, the ending moment of the first time window can be represented as T3max≤Tul,i+Ta3max+W+△Ts, or represented as T3max≤Tul,i+Ta3max+W+△T. In some examples, T3min can be determined as Tul,i+Ta3min+△Ts, or T3min can be determined as Tul,i+Ta3min+△T. And T3max can be determined as Tul,i+Ta3max+W+△Ts, or T3max can be determined as Tul,i+Ta3max+W+△T.

[0202] For another example, in the case where the first time window parameter includes the first time window length and the second offset, the starting moment of the first time window determined by the first network side device can be greater than or equal to the sum of the minimum value of the first time length and the second offset, and then minus the first time window length. For example, the starting moment of the first time window can be represented as T3min≥Tul,i+Ta3min+△Te-W, or represented as T3min≥Tul,i+Ta3min+△T-W. The ending moment of the first time window determined by the first network side device can be less than or equal to the sum of the maximum value of the first time length and the second offset. For example, the ending moment of the first time window can be represented as T3max≤Tul,i+Ta3max+△Te, or represented as T3max≤Tul,i+Ta3max+△T. In some examples, T3min can be determined as Tul,i+Ta3min+△Te-W, or T3min can be determined as Tul,i+Ta3min+△T-W. And T3max can be determined as Tul,i+Ta3max+△Te, or T3max can be determined as Tul,i+Ta3max+△T.

[0203] For example, in a case where the first time window parameter includes a first offset and a second offset, the starting time of the first time window determined by the first network-side device can be greater than or equal to a sum of the reception time of the sensing signal, a minimum value of the first time length, and the first offset. For example, the starting time of the first time window can be represented as T3min≥Tul,i+Ta3min+△Ts. The ending time of the first time window determined by the first network-side device can be less than or equal to a sum of the reception time of the sensing signal, a maximum value of the first time length, and the second offset. For example, the ending time of the first time window can be represented as T3max≤Tul,i+Ta3max+△Te. In some examples, T3min can be determined as Tul,i+Ta3min+△Ts, and T3max can be determined as Tul,i+Ta3max+△Te.

[0204] Embodiments of the present application provide a manner of determining the starting time and the ending time of the first time window in a case where the first time window parameter includes different parameters. In different scenarios, the first time window can be accurately determined based on the corresponding time window parameter.

[0205] In some embodiments, the reception time of the sensing signal related to the above embodiments can be equal to the transmission time of the sensing signal. Assuming that the transmission time of the sensing signal is denoted as Ts,i, Tul,i can be equal to Ts,i. This case can be applicable to a scenario where the reception time of the sensing signal is not separately indicated.

[0206] For example, the reception time of the sensing signal can be equal to a sum of the transmission time of the sensing signal and a time offset. For example, the reception time of the sensing signal can be determined by adding the time offset to Ts,i.

[0207] For another example, the reception time of the sensing signal can be equal to a sum of the transmission time of the sensing signal, a time offset, and a cyclic prefix (CP) length. For example, in a case where a CP is introduced in the sensing signal to avoid inter-symbol interference, the reception time of the sensing signal can be determined by Ts,i, the CP length, and the time offset.

[0208] Embodiments of the present application provide a plurality of manners of determining the reception time of the sensing signal, so that the reception time of the sensing signal can be accurately determined in different scenarios, and the first time window can be accurately determined.

[0209] In some embodiments, the first time window determined by the first network-side device can be a first time window common to a plurality of sensing symbols. For example, the sensing signal received by the first network-side device in S102 includes M sensing symbols. M is a positive integer. Then the first time window can be a first time window common to the M sensing symbols. In this case, the first network-side device can determine the first time window according to the reception time of the ith sensing symbol, the first time length, and the first time window parameter. The ith sensing symbol can be any one of the M sensing symbols. i is a positive integer less than or equal to M. That is, in the process of determining the first time window, the first network-side device can select the reception time of the ith sensing symbol as the reception time of the sensing signal. In other words, the first time window can be determined according to the reception time of any one of the M sensing symbols, the first time length, and the first time window parameter. It can be understood that the sensing signal includes M sensing symbols, and then the first data can be considered as the result of processing the M sensing symbols by the first network-side device.

[0210] Embodiments of the present application can determine a first time window common to M sensing symbols, thereby reducing signaling overhead.

[0211] In other embodiments, the first network-side device can determine a first time window parameter corresponding to each sensing symbol for the M sensing symbols. For example, the first time window can include M first time windows corresponding to the M sensing symbols. For the ith sensing symbol, the first network-side device can determine the first time window corresponding to the ith sensing symbol according to the reception time of the ith sensing symbol, the first time length, and the first time window parameter.

[0212] For example, the first time windows corresponding to the M sensing symbols can be the same. In this case, in the process of determining the first time window corresponding to each sensing symbol, the values of the first time length and the first time window parameter used can be the same. It can be considered that the first network-side device processes each sensing symbol with the same first time length, and the first time window length, the first offset, and the second offset are all the same. Of course, the specific first time window parameter can select the first time window length, or select any two of the first time window length, the first offset, and the second offset, which is not limited in the embodiments of the present application. It can be seen that in this scenario, the first time windows corresponding to different sensing symbols differ only in the start time and the end time, and the lengths of the first time windows are the same.

[0213] For example, the first time window corresponding to each of the M sensing symbols can be partially or totally different. In this case, the first time length and the value of the first time window parameter corresponding to each sensing symbol can be independent of each other, that is, the values can be the same or different. The first time length and the value of the first time window parameter corresponding to a part of the sensing symbols can be the same, and the first time length and the value of the first time window parameter corresponding to another part of the sensing symbols can be different. The first time length corresponding to a part of the sensing symbols can be the same, and the value of the first time window parameter corresponding to the part of the sensing symbols can be different. Alternatively, the first time length corresponding to a part of the sensing symbols can be different, and the value of the first time window parameter corresponding to the part of the sensing symbols can be the same. The embodiments of the present application are not limited in this regard. It can be seen that the length of the first time window corresponding to each sensing symbol can be different in addition to the start time and the end time.

[0214] In some examples, for the case that the first time window corresponding to each of the M sensing symbols can be partially or totally different, the first time window parameter can be N first time window parameters. N is a positive integer less than or equal to M. For example, the first network side device receives N first time window parameters in the first information received at S101. The N first time window parameters are applicable to the M sensing symbols. For example, when N is equal to M, it means that each sensing symbol is configured with the first time window parameter corresponding to the sensing symbol. Alternatively, for the case that N is less than M, it can be considered that the M sensing symbols are divided into N groups of sensing symbols, and each group of sensing symbols can include one or more sensing symbols. The sensing symbols in the same group use the same first time window parameter, and each group of sensing symbols corresponds to one first time window parameter. It can be considered that the first time window length of the sensing symbols in the same group is the same, and the first time window length of the sensing symbols in different groups can be different.

[0215] The embodiments of the present application can configure a certain number of first time window parameters, so that a part of the sensing symbols use the same first time window parameter, and a part of the sensing symbols use different first time window parameters. Alternatively, each sensing symbol is independently configured to flexibly configure the first time window corresponding to each sensing symbol.

[0216] The embodiments of the present application provide the relationship between the first time windows corresponding to different sensing symbols, and the same first time window parameter can be shared to reduce signaling overhead. Alternatively, each first time window parameter can be independently indicated to flexibly configure the first time window. The universality of the system is improved.

[0217] For the first network side device, after determining the first time window corresponding to each of the M perception symbols, the first network side device can send the first data corresponding to each of the M perception symbols in the first time window corresponding to the perception symbol. For example, for the i th perception symbol, the first network side device can send the first data corresponding to the i th perception symbol based on the first time window corresponding to the i th perception symbol.

[0218] The embodiments of the present application can be applied to the scenario of determining the first time window corresponding to each perception symbol to send the first data corresponding to the perception symbol in the corresponding time window. The data transmission efficiency is ensured, and the demand for peak bandwidth is reduced.

[0219] The embodiments of the present application configure the first network side device with the first time window suitable for the perception scenario, so that the first network side device sends the perception data in the first time window, and the demand for peak bandwidth is reduced.

[0220] In the communication method provided by the embodiments of the present application, the second network side device can configure the first network side device with the first time window parameter. For example, the second network side device can receive the third information sent by the third network side device, which can also be referred to as a perception task request, a perception service request, a perception service request, etc. The third information can include one or more of the following information: a perception target position, a perception QoS requirement, and perception resource information. The QoS requirement information can also be referred to as QoS demand information, perception QoS demand, perception QoS requirement, etc., which is not limited in the embodiments of the present application. The perception target position information can be used to indicate the position of the perception target corresponding to a certain perception service, such as area identifier, cell identifier, coordinates, latitude and longitude, etc. The QoS requirement information related to the perception service can include resolution, accuracy, and / or delay requirements.

[0221] For example, the second network side device can determine the first time window parameter according to the perception QoS requirement. For example, the first time window parameter applicable to each perception QoS requirement can be determined according to different perception QoS requirements. For example, the value of the time window length W or the value of the first offset and / or the second offset can be determined according to the perception QoS requirement. Correspondingly, the first network side device can determine the first time window meeting the perception QoS requirement according to the first time window parameter determined based on the perception QoS requirement, and transmit the first data in the time window. For example, the higher the resolution requirement is, the shorter the length of the first time window is. For example, the lower the accuracy requirement is, the longer the length of the first time window is. For example, the higher the latency requirement is, the shorter the length of the first time window is. That is, the higher the QoS requirement related to the perception service is, the shorter the length of the first time window is, so that the first data is transmitted from the first network side device to the second network side device faster. Conversely, the lower the QoS requirement related to the perception service is, the longer the length of the first time window is, so as to further reduce the demand for peak bandwidth.

[0222] For another example, the second network side device can determine the first time window parameter according to the second information. For example, the second information can be used to indicate the resource usage of the second network side device. For example, if the processing resource of the second network side device is relatively tight, a relatively loose first time window can be set to avoid that the second network side device cannot process the received first data due to insufficient processing resource. Correspondingly, the first network side device can determine the first time window meeting the resource usage of the second network side device according to the first time window parameter determined based on the resource usage of the second network side device, and transmit the first data in the time window.

[0223] The embodiment of the present application can combine the perception QoS requirement and / or the resource usage of the second network side device to configure different first time window parameters, so that the first data transmitted by the first network side device on the fronthaul interface can meet the perception QoS requirement and / or the resource usage of the second network side device.

[0224] In the communication method provided by the embodiment of the present application, the first network side device transmits the first data on the fronthaul interface according to the first time window. Correspondingly, the second network side device can also determine the second time window for receiving the first data on the fronthaul interface. Therefore, the second network side device can also determine the second time window according to the first time window and the second time length. For example, the second time length can be the communication delay between the first network side device and the second network side device, such as T34 shown in FIG. 8. The second network side device can receive the first data transmitted by the first network side device in the first time window according to the second time window.

[0225] As shown in FIG. 8, for example, the receiving time window interval of the front-haul interface of the DU can be greater than or equal to the sum of the RU sending time window and the front-haul interface transmission delay, to ensure that the sending end can correctly send data and the receiving end can correctly receive data.

[0226] For example, for downlink communication data, the earliest time of the sending window of the DU should be later than T2amax+T12min, i.e., T1amax≤T2amax+T12min. The reason is that, to ensure that the downlink communication data can be sent at point Ra, the earliest time of point R2 can be T2amax minus the time of sending at point Ra. Meanwhile, considering the downlink delay T12 in the front-haul link, if T12max is used, the DU sends downlink communication data at T2amax+T12max, but the data arrives at the RU earlier than T12max, which causes the data to arrive at the RU earlier. The downlink signal after processing by the RU also arrives at point Ra earlier. At this time, it is not the time of sending the downlink signal, which causes signal loss. Therefore, to avoid the above situation, the starting time of the sending time window of the DU is considered to be T12min instead of T12max. Although, in this case, the data delay in the front-haul link can be greater than T12min, which causes the data to arrive at the RU later. However, the RU can ensure that the data between T2amax and T2amin can be correctly sent to the air interface at point Ra. T1amax is greater than or equal to T2amax+T12min, because if the starting time of the sending window is earlier than T2amax+T12min, the data will also arrive at point Ra earlier, which cannot ensure that the downlink signal is accurately sent. Therefore, T1amax should be later than (or not earlier than) T2amax+T12min. As for the symbol “≤” in the above inequality, it is because T1a is ahead of the time at point Ra. That is, if the time at point Ra is 0, the time of T1a is negative. Therefore, to ensure that T1amax is after T2amax+T12min, the inequality should be “≤”.

[0227] Similarly, for the downlink communication data, the latest time of the sending window of the DU should be earlier than T2amin+T12max, i.e., T1amin≥T2amin+T12max. Because, if the latest time of the sending window is determined as T2amin+T12min, if the delay in the front-haul link is greater than T2amin, the RU will receive the data after T2amin, even if the data is processed according to the delay of T2amin, it cannot be sent at Ra. Because the RU has not been processed. Therefore, the end time of the sending window of the DU is considered to be T12max rather than T12min. And T1amin is less than or equal to T2amin+T12max, because if the end time of the sending window is later than T2amin+T12max, the data will also be delayed to reach Ra, and the downlink signal cannot be accurately sent. Therefore, T1amin should be earlier than (or not later than) T2amin+T12max.

[0228] And for the uplink communication data, the earliest time of the receiving window of the DU should be earlier than Ta3min+T34min, i.e., Ta4min≤Ta3min+T34min. And the latest time of the receiving window of the DU should be later than Ta3max+T34max, i.e., Ta4max≥Ta3max+T34max. Unlike the sending window of the downlink, the start time of the receiving window can be earlier than the earliest arrival time of the data, and the end time of the receiving window can be later than the latest arrival time of the data, to ensure that the DU accurately receives the uplink data and avoid data missing.

[0229] Table 3 shows that for the communication scenario, the boundary of the sending time window of the DU downlink and the receiving time window of the DU uplink satisfies the condition.

[0230] Table 3

[0231] In the perception scenario, the second time window corresponds to the receiving time window of the uplink. Then the second network side device can further determine the second time window in the following multiple ways.

[0232] In some embodiments, in the scenario that the first time window parameter determined by the second network-side device comprises the first time window length, the start time of the second time window determined by the second network-side device can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length and the reception time of the perception signal. Assuming that the minimum value of the second time length is denoted as T34min, the start time of the above-mentioned second time window can be represented as T4min≤Tul,i+Ta3min+T34min. The end time of the second time window determined by the second network-side device can be greater than or equal to the sum of the maximum value of the first time length, the maximum value of the second time length, the first time window length and the reception time of the perception signal. Assuming that the maximum value of the second time length is denoted as T34max, the end time of the above-mentioned second time window can be represented as T4max≥Tul,i+Ta3max+T34max+W. In some examples, it can be determined that T4min=Tul,i+Ta3min+T34min, and T4max=Tul,i+Ta3max+T34max+W.

[0233] In other embodiments, in the scenario that the first time window parameter determined by the second network-side device comprises the first time window length and the first offset, the start time of the second time window determined by the second network-side device can be less than or equal to the sum of the minimum value of the first time length, the minimum value of the second time length, the first offset and the reception time of the perception signal. The start time of the above-mentioned second time window can be represented as T4min≤Tul,i+Ta3min+△Ts+T34min, or represented as T4min≤Tul,i+Ta3min+△T+T34min. The end time of the second time window determined by the second network-side device can be greater than or equal to the sum of the maximum value of the first time length, the first offset, the first time window length and the maximum value of the second time length. The end time of the above-mentioned second time window can be represented as T4max≥Tul,i+Ta3max+W+△Ts+T34max, or represented as T4max≥Tul,i+Ta3max+W+△T+T34max. In some examples, it can be determined that T4min=Tul,i+Ta3min+△Ts+T34min, or T4min=Tul,i+Ta3min+△T+T34min. And T4max=Tul,i+Ta3max+W+△Ts+T34max, or T4max=Tul,i+Ta3max+W+△T+T34max.

[0234] In yet other embodiments, for the scenario where the first time window parameters determined by the second network-side device include the first time window length and the second offset, the start time of the second time window determined by the second network-side device can be less than or equal to the sum of the reception time of the sensing signal, the minimum of the first duration, the first offset, and the minimum of the second duration, minus the first time window length. The start time of the second time window can be represented as T4min≤ Tul,i + Ta3min + ATs + T34min - W, or as T4min≤ Tul,i + Ta3min + AT + T34min - W. The end time of the second time window determined by the second network-side device can be greater than or equal to the sum of the reception time of the sensing signal, the maximum of the first duration, the second offset, and the maximum of the second duration. The end time of the second time window can be represented as T4max≥ Tul,i + Ta3max + ATs + T34max, or as T4max≥ Tul,i + Ta3max + AT + T34max. In some examples, T4min can be determined as Tul,i + Ta3min + ATs + T34min - W, or as Tul,i + Ta3min + AT + T34min - W, and T4max can be determined as Tul,i + Ta3max + ATs + T34max, or as Tul,i + Ta3max + AT + T34max.

[0235] In yet other embodiments, for the scenario where the first time window parameters determined by the second network-side device include the first offset and the second offset, the start time of the second time window determined by the second network-side device can be less than or equal to the sum of the reception time of the sensing signal, the minimum of the first duration, the first offset, and the minimum of the second duration. The start time of the second time window can be represented as T4min≤ Tul,i + Ta3min + ATs + T34min. The end time of the second time window determined by the second network-side device can be greater than or equal to the sum of the reception time of the sensing signal, the maximum of the first duration, the second offset, and the maximum of the second duration. The end time of the second time window can be represented as T4max≥ Tul,i + Ta3max + ATs + T34max. In some examples, T4min can be determined as Tul,i + Ta3min + ATs + T34min, and T4max can be determined as Tul,i + Ta3max + ATs + T34max.

[0236] In some embodiments, the second time window is similar to the first time window, and M sensing symbols can share one second time window. Alternatively, M sensing symbols can correspond to M second time windows respectively. In the case that the second time window includes M second time windows corresponding to M sensing symbols respectively, the lengths of the M second time windows can be the same. Alternatively, the lengths of some of the M second time windows can be the same, and the lengths of some of the M second time windows can be different. Alternatively, the lengths of the M second time windows can be different. For details, refer to the description of the embodiments of the first time window. The embodiments of the present application will not be described here again.

[0237] The embodiments of the present application provide various ways of determining the second time window, so that the second network side device can determine a suitable second time window to receive the uplink data of the front haul link in different scenarios.

[0238] The second network side device according to the embodiments of the present application can determine the second time window to receive the first data according to the first time window, so as to ensure that the second network side device can accurately receive the first data and ensure the communication efficiency.

[0239] Next, the above scheme will be described in combination with more specific embodiments.

[0240] FIG. 14 is a schematic diagram of a communication method according to an embodiment of the present application.

[0241] The communication process can be applied to, but is not limited to, the communication scenarios shown in FIG. 1 and FIG. 10. It can also be applied to the network architecture shown in FIG. 11. The method can be applied to LTE, LTE FDD system, LTE TDD, 5G system or NR system, subsequent communication systems (such as future communication systems), V2X, MTC, IoT, LTE-M, M2M, D2D, etc. wireless communication scenarios. The embodiments of the present application take the first network side device as the RU, the second network side device as the DU, the third network side device as the CU, the fourth network side device as the SU, the first core network element as the SF, and the second core network element as the AMF as an example for description. The method can include the following steps:

[0242] S201, the SF sends third information to the AMF. Correspondingly, the AMF receives the third information from the SF.

[0243] S202, the AMF sends the third information to the CU. Correspondingly, the CU receives the third information from the AMF.

[0244] For example, the SF can initiate a sensing service request (i.e., the third information) to the CU via the AMF. The sensing service request can carry a sensing target location, QoS requirement information corresponding to each sensing service, sensing resource configuration information, etc. The QoS requirement information can include accuracy of sensing results, resolution of sensing results, and latency of sensing services, etc. In some examples, the QoS requirement information can also be referred to as QoS demand information, which is not limited in the embodiments of the present application.

[0245] In S203, the CU sends the third information to the DU. Accordingly, the DU receives the third information from the CU.

[0246] In S204, the DU determines the first information according to the third information and / or the second information.

[0247] For example, the DU can determine the first time window parameter (included in the first information) of the RU for sending the uplink sensing data on the fronthaul interface according to the sensing QoS requirement and / or resource usage of the DU. In some examples, the DU can also consider the sensing resource configuration when determining the first time window parameter, i.e., determine the time when the RU receives the sensing signal according to the sensing resource configuration (included in the first information).

[0248] For example, the first time window parameter can include a first time window length W. Alternatively, the first time window parameter can include W and a first offset (denoted as △Ts or △T) of the starting time of the first time window relative to the time (i.e., the time at position R3) when the i-th sensing symbol is processed internally in the RU. Alternatively, the first time window parameter can include W and a second offset (denoted as △Te or △T) of the ending time of the first time window relative to the time (i.e., the time at position R3) when the i-th sensing symbol is processed internally in the RU. Alternatively, the first time window parameter can include the first offset and the second offset.

[0249] It can be understood that the first time window parameter can be used to indicate that the RU sends the IQ data of all received sensing symbols (e.g., in one sensing period) within the first time window. The i-th sensing symbol can be any one of the received sensing symbols. For example, the RU sends and receives N sensing symbols, and the i-th sensing symbol can be the first or the last of the N sensing symbols, e.g., i = 1 or N.

[0250] In some examples, W can be equal to a sensing period, e.g., 10 ms, 5 ms, or 2.5 ms. The sensing period can be considered as a period corresponding to the sensing signal. Alternatively, the sensing period can be a scanning period of a sensing beam. The sensing beam can be a beam for sending the sensing signal, or the sensing beam can be a beam for receiving the sensing signal.

[0251] In some embodiments, the DU can also determine the transmission time information for the one or more sensing signals according to the sensing target location, the sensing QoS requirement, the sensing resource configuration, or the timing advance (TA). Optionally, the DU can also determine the time offset information of the reception time of the one or more sensing signals (at the RU) relative to the transmission time. Alternatively, the DU can determine the reception time information for the one or more sensing signals. Optionally, the DU can also determine the time offset information of the transmission time of the one or more sensing signals (at the RU) relative to the reception time. Optionally, the DU can also determine the CP length information of the one or more sensing signals, such as ci, which represents the CP length of the ithsensing symbol. In some embodiments, i can be the index of the sensing symbol. The CP length can be the CP added to the front end of the corresponding symbol, i.e., the beginning of the symbol, in the process of CP addition performed by the RU. The CP length can be dynamically adjusted according to the communication distance, communication loss, and other requirements. The specific adjustment method can refer to related technologies, and will not be described here in the embodiments of the present application. In some embodiments, the CP of the subsequent symbol can be greater than the sum of the time domain offset of the previous symbol and the CP of the previous symbol. For example, the CP of symbol #1 can be greater than the sum of the time domain offset of symbol #0 and the CP of symbol #0. In some embodiments, the above transmission time information (or reception time information), time offset information, and optional CP length information can be included in the first information mentioned above and transmitted by the DU to the RU. Of course, they can also be transmitted through independent messages, which are not limited in the embodiments of the present application.

[0252] In the embodiments of the present application, the index can also be replaced by an identifier (ID).

[0253] The above transmission time information (or reception time information), time offset information, and CP length information can be used to determine the uplink transmission time and downlink reception time of the sensing symbol at Ra. The downlink reception time can be considered as the time position of the earliest time domain IQ sample of the sensing symbol that the RU can receive at Ra (i.e., the time position of the beginning of the cyclic prefix).

[0254] In some examples, the transmission time information or the reception time information can include one or more symbol identifiers (e.g., symbol IDs) and optionally a frame ID, a subframe ID, a slot ID, and a first periodicity parameter to which the symbol IDs belong. For example, the transmission time information or the reception time information can include a specific start time value (e.g., an absolute time value) for each symbol. Alternatively, the transmission time information or the reception time information can include a frame format index to indicate a corresponding frame format. The frame format can be a frame format defined by a protocol and having different perceived slot ratios. Alternatively, the transmission time information or the reception time information can include a slot format index to indicate a corresponding slot format. The slot format can be a slot format defined by a protocol and having different perceived symbol ratios.

[0255] For example, the transmission time information or the reception time information can include continuous time information (i.e., a fourth time length) at a frame, subframe, slot, or symbol granularity, or periodic continuous time information (i.e., a second periodicity parameter) at a frame, subframe, slot, or symbol granularity. For example, the transmission time information or the reception time information can include a starting frame ID, subframe ID, slot ID, or symbol ID, and a number of frames, subframes, slots, or symbols to be continued. Alternatively, the transmission time information or the reception time information can include a starting frame ID, subframe ID, slot ID, or symbol ID, and a number of frames, subframes, slots, or symbols to be continued and a second periodicity. In some examples, the second periodicity can also be indicated by the number of frames, subframes, slots, or symbols to be continued.

[0256] For example, the transmission time information or the reception time information can include a bitmap. Each bit of the bitmap can be set to 0 or 1 to indicate whether a frame, subframe, slot, or symbol corresponding to the bit is used to transmit a perception signal.

[0257] In some examples, the time offset parameter can be a time offset relative to a time indicated by the transmission time information or the reception time information. In an air interface frame format, the transmission time of a symbol in each frame, each subframe, and each slot can be fixed. Therefore, determining a symbol used by a perception signal can be equivalent to determining a transmission time or a reception time of the perception signal.

[0258] In some examples, a network device can obtain a TA value through a random access procedure with a UE. The TA value can be understood as a signal transmission delay between a base station and a UE. Therefore, determining a time offset parameter of a perception signal through the TA value is generally for a perception service scenario in which a perception target is a terminal.

[0259] In some embodiments, a DU can determine a number of symbols included in a perception signal and a plurality of time offset parameters in the following manner.

[0260] For example, the DU can predict the position of the sensing target in the next multiple symbol time and the distance between the sensing target and the network device according to the position movement information of the sensing target. The position movement information can be obtained by a core network element, and details can be referred to related technical implementation, which will not be described herein. The DU can know its own position, and thus can determine the distance between itself and the sensing target according to its own position and the position of the sensing target. The DU can estimate the transmission time of the sensing signal according to the distance of the sensing target and the propagation speed of electromagnetic waves in the environment, so as to determine the time offset of the receiving time of the sensing signal relative to the sending time of the sensing signal. In some examples, the number of sensing symbols can be statically fixed, such as determined by a protocol preset frame format. Alternatively, the number of sensing symbols can also be dynamically adjusted by the DU, such as dynamically adjusting the proportion of sensing symbols in the frame format according to the QoS requirements such as the accuracy and resolution of the sensing task, and the status of the wireless resources occupied by the communication service. Alternatively, a suitable time slot format (or frame format) with different sensing symbol (or time slot) ratios is selected from a plurality of time slot formats (or frame formats) with different sensing symbol (or time slot) ratios as the sending time slot (or frame) of the sensing signal, so as to determine the number of sensing symbols.

[0261] In the embodiments of the present application, the sensing signal can refer to a signal or symbol or data stream for sensing purposes. The sensing signal can also be considered as a sensing symbol or a sensing stream. The sensing signal data can also be sensing symbol data, sensing symbol IQ data or sensing data stream.

[0262] In some embodiments, the DU can also determine the first time window of the sensing symbol according to the first time window parameter and the uplink receiving time of the sensing symbol. The DU further combines the transmission delay T34 and the variation range [T34,min, T34,max] of the front-haul interface to determine the second time window [Ta4,min, Ta4,max]. That is, the receiving time window of the sensing data sent by the RU on the front-haul interface. The DU receives all the sensing data within the second time window.

[0263] In S205, the DU sends the first information to the RU. Correspondingly, the RU receives the first information from the DU.

[0264] For example, the DU sends the first time window parameter (i.e., the first information) to the RU.

[0265] Optionally, the DU can also send the sending time information (or receiving time information) and the time offset information (optionally, the CP length information is also sent) to the RU. So that the RU can determine the time of sending the sensing signal and the time of receiving the sensing signal based on the sending time information (or receiving time information) and the time offset information (optionally, the CP length information is also sent).

[0266] S206, the RU receives the sensing signal.

[0267] For example, the sensing signal can be a sensing signal sent by another RU, or a sensing signal sent by a terminal. For another example, the sensing signal can be a echo signal of a sensing signal sent by the RU according to the transmission time information (or the reception time information) and the time offset information (optionally, the CP length information is also sent). For instance, the RU can receive the sensing signal at the time of receiving the sensing signal according to the transmission time information (or the reception time information) and the time offset information (optionally, the CP length information is also sent).

[0268] In some examples, assume that the time of receiving the sensing signal is denoted as Tul,i, and the time of sending the sensing signal is denoted as Ts,i. Then, Tul,i can be equal to Ts,i. Or, Tul,i is equal to the sum of Ts,i and the time offset information (e.g., the time offset relative to the transmission time). Or, Tul,i is equal to the sum of Ts,i, the time offset information (e.g., the time offset relative to the transmission time), and the CP length (i.e., ci).

[0269] In some examples, the RU can perform CP removal, fast fourier transformation (FFT), resource element (RE) de-mapping, etc. on the received sensing signal to obtain processed sensing IQ data. The time delay of the processing procedure is denoted as Ta3, which can vary in the range of [Ta3min, Ta3max].

[0270] S207, the RU sends first data to the DU based on the first time window. Correspondingly, the DU receives the first data from the RU.

[0271] For example, the RU can determine the first time window according to the first time parameter, and send the first data in the first time window.

[0272] For example, the sensing signal can include M sensing symbols. Referring to FIG. 15, the M sensing symbols can share one first time window. In this case, the RU can determine one first time window according to the first time window parameter. And in the first time window, the RU sends the IQ data corresponding to each sensing symbol to the DU.

[0273] For example, the boundaries T3min and T3max of the first time window can satisfy any of the following conditions.

[0274] Condition 1 (the first time window parameter includes a first time window length W):

[0275] T3min≥ Tul, i + Ta3min, T3max≤ Tul, i + Ta3max + W. If Tul, i = Ts, i, T3min≥ Ts, i + Ta3min, T3max≤ Ts, i + Ta3max + W.

[0276] Case 2 (the first time window parameter includes a first time window length W and a first offset):

[0277] T3min≥ Tul, i + Ta3min + ATs, or T3min≥ Tul, i + Ta3min + AT; and T3max≤ Tul, i + Ta3max + W + ATs, or T3max≤ Tul, i + Ta3max + W + AT. If Tul, i = Ts, i, T3min≥ Ts, i + Ta3min + ATs, or T3min≥ Ts, i + Ta3min + AT; and T3max≤ Ts, i + Ta3max + W + ATs, or T3max≤ Ts, i + Ta3max + W + AT.

[0278] Case 3 (the first time window parameter includes a first time window length W and a second offset):

[0279] T3min≥ Tul, i + Ta3min + ATe - W, or T3min≥ Tul, i + Ta3min + AT - W; and T3max≤ Tul, i + Ta3max + ATe, or T3max≤ Tul, i + Ta3max + AT. If Tul, i = Ts, i, T3min≥ Ts, i + Ta3min + ATe - W, or T3min≥ Ts, i + Ta3min + AT - W; and T3max≤ Ts, i + Ta3max + ATe, or T3max≤ Ts, i + Ta3max + AT.

[0280] Case 4 (the first time window parameter includes a first offset and a second offset):

[0281] T3min≥ Tul, i + Ta3min + ATs, T3max≤ Tul, i + Ta3max + ATe. If Tul, i = Ts, i, T3min≥ Ts, i + Ta3min + ATs, T3max≤ Ts, i + Ta3max + ATe.

[0282] The index i above can be any one of the M sensing symbol indices, such as i = 1 or i = M, etc.

[0283] In some embodiments, referring to FIG. 16, the M sensing symbols each correspond to a first time window. In this case, the RU can determine the first time window corresponding to each sensing symbol according to the first time window parameters. And within the first time window, the RU transmits the IQ data corresponding to the sensing symbol to the DU. For example, the first time windows corresponding to different sensing symbols have the same length, and / or the same first offset, and / or the same second offset. Then it can be considered that the first time window corresponding to each sensing symbol is determined by the same first time window parameters.

[0284] Then for the above 4 cases, the first time window corresponding to each sensing signal can be determined respectively, such as determining Ti,3min, Ti,3maxfor the ithsensing symbol.

[0285] Case 1:

[0286] Ti,3min≥Tul,i+Ta3min, Ti,3max≤Tul,i+Ta3max+W. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min, Ti,3max≤Ts,i+Ta3max+W.

[0287] Case 2:

[0288] Ti,3min≥Tul,i+Ta3min+△Ts, or Ti,3min≥Tul,i+Ta3min+△T; and Ti,3max≤Tul,i+Ta3max+W+△Ts, or Ti,3max≤Tul,i+Ta3max+W+△T. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min+△Ts, or Ti,3min≥Ts,i+Ta3min+△T; and Ti,3max≤Ts,i+Ta3max+W+△Ts, or Ti,3max≤Ts,i+Ta3max+W+△T.

[0289] Case 3:

[0290] Ti,3min≥Tul,i+Ta3min+△Te-W, or Ti,3min≥Tul,i+Ta3min+△T-W; and Ti,3max≤Tul,i+Ta3max+△Te, or Ti,3max≤Tul,i+Ta3max+△T. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min+△Te-W, or Ti,3min≥Ts,i+Ta3min+△T-W; and Ti,3max≤Ts,i+Ta3max+△Te, or Ti,3max≤Ts,i+Ta3max+△T.

[0291] Case 4:

[0292] Ti,3min≥Tul,i+Ta3min+△Ts, Ti,3max≤Tul,i+Ta3max+△Te. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min+△Ts, Ti,3max≤Ts,i+Ta3max+△Te.

[0293] In some embodiments, referring to FIG. 17, similar to FIG. 16, the difference is that the first time window length, the first offset and / or the second offset corresponding to each sensing symbol can be different. For example, the first time window parameters corresponding to each sensing symbol can be independently configured, which can be the same or different.

[0294] Then for the above 4 cases,

[0295] Case 1:

[0296] Ti,3min≥Tul,i+Ta3min, Ti,3max≤Tul,i+Ta3max+Wi. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min, Ti,3max≤Ts,i+Ta3max+Wi. Wherein, Wi represents the first time window length corresponding to the i-th sensing symbol.

[0297] Case 2:

[0298] Ti,3min≥Tul,i+Ta3min+△Ti,s, or Ti,3min≥Tul,i+Ta3min+△Ti; and Ti,3max≤Tul,i+Ta3max+Wi+△Ti,s, or Ti,3max≤Tul,i+Ta3max+Wi+△Ti. If Tul,i=Ts,i, Ti,3min≥Ts,i+Ta3min+△Ti,s, or Ti,3min≥Ts,i+Ta3min+△Ti. Ti,3max≤Ts,i+Ta3max+Wi+△Ti,s, or Ti,3max≤Ts,i+Ta3max+Wi+△Ti. Wherein, △Ti,s or △Ti can represent the first offset corresponding to the i-th sensing symbol.

[0299] Case 3:

[0300] Ti,3min≥ Tul,i + Ta3min + ATi,e - Wi, or Ti,3min≥ Tul,i + Ta3min + ATi - Wi; and Ti,3max≤ Tul,i + Ta3max + ATi,e, or Ti,3max≤ Tul,i + Ta3max + ATi. If Tul,i = Ts,i, Ti,3min≥ Ts,i + Ta3min + ATi,e - Wi, or Ti,3min≥ Ts,i + Ta3min + ATi - Wi. Ti,3max≤ Ts,i + Ta3max + ATi,e, or Ti,3max≤ Ts,i + Ta3max + ATi. Wherein, ATi,e or ATi can represent the second bias corresponding to the ith sensing symbol.

[0301] Case 4:

[0302] Ti,3min≥ Tul,i + Ta3min + ATi,s, Ti,3max≤ Tul,i + Ta3max + ATi,e. If Tul,i = Ts,i, Ti,3min≥ Ts,i + Ta3min + ATi,s, Ti,3max≤ Ts,i + Ta3max + ATi,e.

[0303] In some embodiments, the DU can receive the first data sent by the RU according to the second time window determined in S204.

[0304] Corresponding to the first time window, if the M sensing symbols can share one first time window, the M sensing symbols can share one second time window, that is, the DU receives the first data of the M symbols sent by the RU in one second time window. For example, the boundaries Ta4,min and Ta4,max of the second time window can satisfy any of the following conditions, as shown in the time window (i.e., the second time window) of the R4 position (i.e., the DU receiving point) in FIG. 15.

[0305] Case 1:

[0306] T4min≤ Tul,i + Ta3min + T34min, T4max≥ Tul,i + Ta3max + T34max + W. If Tul,i = Ts,i, T4min≤ Ts,i + Ta3min + T34min, T4max≥ Ts,i + Ta3max + T34max + W.

[0307] Case 2:

[0308] T4min≤Tul,i+Ta3min+△Te+T34min-W, or T4min≤Tul,i+Ta3min+△T+T34min-W; and T4max≥Tul,i+Ta3max+△Te+T34max, or T4max≥Tul,i+Ta3max+△T+T34max. If Tul,i=Ts,i, T4min≤Ts,i+Ta3min+△Te+T34min-W, or T4min≤Ts,i+Ta3min+△T+T34min-W; and T4max≥Ts,i+Ta3max+△Te+T34max, or T4max≥Ts,i+Ta3max+△T+T34max.

[0309] Case 3:

[0310] T4min≤Tul,i+Ta3min+△Te+T34min-W, or T4min≤Tul,i+Ta3min+△T+T34min-W; and T4max≥Tul,i+Ta3max+△Te+T34max, or T4max≥Tul,i+Ta3max+△T+T34max. If Tul,i=Ts,i, T4min≤Ts,i+Ta3min+△Te+T34min-W, or T4min≤Ts,i+Ta3min+△T+T34min-W; and T4max≥Ts,i+Ta3max+△Te+T34max, or T4max≥Ts,i+Ta3max+△T+T34max.

[0311] Case 4:

[0312] T4min≤Tul,i+Ta3min+△Te+T34min-W, or T4min≤Tul,i+Ta3min+△T+T34min-W; and T4max≥Tul,i+Ta3max+△Te+T34max, or T4max≥Tul,i+Ta3max+△T+T34max. If Tul,i=Ts,i, T4min≤Ts,i+Ta3min+△Te+T34min-W, or T4min≤Ts,i+Ta3min+△T+T34min-W; and T4max≥Ts,i+Ta3max+△Te+T34max, or T4max≥Ts,i+Ta3max+△T+T34max.

[0313] Corresponding to the first time window, if the first time window includes a first time window corresponding to M sensing symbols. Correspondingly, the second time window also includes a second time window corresponding to M sensing symbols. The second time window corresponding to each sensing signal can be determined respectively, such as for the ith sensing symbol, Ti,4min, Ti,4max is determined.

[0314] If the length, the first offset and / or the second offset of the M first time windows are the same, the length, the offset relative to the corresponding first time window of the M second time windows can also be the same. The second time window of the ith sensing symbol, Ti,4min, Ti,4max, can satisfy any of the following cases, as shown in the time window (i.e., the second time window) of the R4 position in FIG. 16.

[0315] Case 1:

[0316] Ti,4min≤ Tul,i + Ta3min + T34min, Ti,4max≥ Tul,i + Ta3max + T34max + W. If Tul,i = Ts,i, Ti,4min≤ Ts,i + Ta3min + T34min, Ti,4max≥ Ts,i + Ta3max + T34max + W.

[0317] Case 2:

[0318] Ti,4min≤ Tul,i + Ta3min + ΔTs + T34min, or Ti,4min≤ Tul,i + Ta3min + ΔT + T34min; and Ti,4max≥ Tul,i + Ta3max + W + ΔTs + T34max, or Ti,4max≥ Tul,i + Ta3max + W + ΔT + T34max. If Tul,i = Ts,i, Ti,4min≤ Ts,i + Ta3min + ΔTs + T34min, or Ti,4min≤ Ts,i + Ta3min + ΔT + T34min; and Ti,4max≥ Ts,i + Ta3max + W + ΔTs + T34max, or Ti,4max≥ Ts,i + Ta3max + W + ΔT + T34max.

[0319] Case 3:

[0320] Ti,4min≤ Tul,i + Ta3min + ΔTe + T34min - W, or Ti,4min≤ Tul,i + Ta3min + ΔT + T34min - W; and Ti,4max≥ Tul,i + Ta3max + ΔTe + T34max, or Ti,4max≥ Tul,i + Ta3max + ΔT + T34max. If Tul,i = Ts,i, Ti,4min≤ Ts,i + Ta3min + ΔTe + T34min - W, or Ti,4min≤ Ts,i + Ta3min + ΔT + T34min - W; and Ti,4max≥ Ts,i + Ta3max + ΔTe + T34max, or Ti,4max≥ Ts,i + Ta3max + ΔT + T34max.

[0321] Case 4:

[0322] Ti,4min≤Tul,i+Ta3min+△Ts+T34min, Ti,4max≥Tul,i+Ta3max+△Te+T34max. If Tul,i=Ts,i, Ti,4min≤Ts,i+Ta3min+△Ts+T34min, Ti,4max≥Ts,i+Ta3max+△Te+T34max.

[0323] If the length of the M first time windows, the first offset and / or the second offset are different, the length of the M second time windows can also be different. Therefore, the second time window Ti,4min, Ti,4max of the ith sensing symbol can satisfy any of the following cases, as shown in the time window (i.e., the second time window) of the R4 position in FIG. 17. For example, the first time window of symbol 0 partially overlaps with the first time window of symbol 1, and accordingly, the second time window of symbol 0 can also partially overlap with the second time window of symbol 1. The first time window of symbol 0 does not overlap with the first time window of symbol 2, and accordingly, the second time window of symbol 0 can also not overlap with the second time window of symbol 2. Similarly, the first time window of symbol 1 does not overlap with the first time window of symbol 2, and accordingly, the second time window of symbol 1 can also not overlap with the second time window of symbol 2.

[0324] Case 1:

[0325] Ti,4min≤Tul,i+Ta3min+T34min, Ti,4max≥Tul,i+Ta3max+T34max+Wi. If Tul,i=Ts,i, Ti,4min≤Ts,i+Ta3min+T34min, Ti,4max≥Ts,i+Ta3max+T34max+Wi.

[0326] Case 2:

[0327] Ti,4min≤Tul,i+Ta3min+△Ti,s+T34min, or Ti,4min≤Tul,i+Ta3min+△Ti+T34min; and Ti,4max≥Tul,i+Ta3max+Wi+△Ti,s+T34max, or Ti,4max≥Tul,i+Ta3max+Wi+△Ti+T34max. If Tul,i=Ts,i, Ti,4min≤Ts,i+Ta3min+△Ti,s+T34min, or Ti,4min≤Ts,i+Ta3min+△Ti+T34min; and Ti,4max≥Ts,i+Ta3max+Wi+△Ti,s+T34max, or Ti,4max≥Ts,i+Ta3max+Wi+△Ti+T34max.

[0328] Case 3:

[0329] Ti,4min≤Tul,i+Ta3min+△Ti,e+T34min-Wi, or Ti,4min≤Tul,i+Ta3min+△Ti+T34min-Wi; and Ti,4max≥Tul,i+Ta3max+△Ti,e+T34max, or Ti,4max≥Tul,i+Ta3max+△Ti+T34max. If Tul,i=Ts,i, Ti,4min≤Ts,i+Ta3min+△Ti,e+T34min-Wi, or Ti,4min≤Ts,i+Ta3min+△Ti+T34min-Wi; and Ti,4max≥Ts,i+Ta3max+△Ti,e+T34max, or Ti,4max≥Ts,i+Ta3max+△Ti+T34max.

[0330] Case 4:

[0331] Ti,4min≤Tul,i+Ta3min+△Ti,s+T34min, Ti,4max≥Tul,i+Ta3max+△Ti,e+T34max. If Tul,i=Ts,i, Ti,4min≤Ts,i+Ta3min+△Ti,s+T34min, Ti,4max≥Ts,i+Ta3max+△Ti,e+T34max.

[0332] For any one of the aforementioned Case 1 to Case 4, in the case of Tul,i=Ts,i+timeoffset, Ts,i in the above inequalities can be replaced by Ts,i+timeoffset. Alternatively, in the case of Tul,i=Ts,i+timeoffset+CP, Ts,i in the above inequalities can be replaced by Ts,i+timeoffset+CP.

[0333] Of course, for the case that the second time window corresponding to each of the M sensing symbols is different, the starting time and the ending time of the second time window of each sensing symbol refer to the same range of T34. The starting time of the second time window corresponding to each sensing symbol can refer to T34min, and the ending time of the second time window can refer to T34max. Although the range of T34 corresponding to different sensing symbols is the same, since T34 is only the transmission time length of each sensing symbol from the RU to the DU, the second time window corresponding to each sensing symbol is also related to the starting time and the ending time of the first time window of the sensing symbol (or for the same sensing symbol, its second time window is determined by the length of the first time window, the first offset and / or the second offset, and the transmission delay range T34min and T34max). Therefore, the starting time and the ending time of the second time window corresponding to each sensing symbol can not be the same, and the length of the second time window corresponding to each sensing symbol can also not be the same.

[0334] In some examples, the DU can perform sensing least square (LS), sensing range-velocity-angle (RVA) spectrum estimation, etc. on the received sensing symbol data to obtain the result of the sensing task. The specific implementation process can refer to related technologies, and the embodiments of the present application will not be repeated here.

[0335] In the embodiments described in FIGS. 12-14, the DU can also be replaced by the SU or the CU (such as the RNA). The first information sent by the DU can also be carried in the separate control plane signaling (such as the O-RAN control plane message) or the separate management plane signaling (such as the O-RAN management plane message) sent by the DU to the RU.

[0336] The embodiments of the present application give the configuration method of the sending time window used by the RU to send the sensing symbol data on the fronthaul interface and the receiving time window used by the DU to receive the sensing symbol data on the fronthaul interface. By setting a common sending time window for all sensing symbol data received in the sensing period, the sending time of the sensing symbol data can be staggered with the sending time of the communication symbol data to a certain extent, thereby reducing the data flow of the fronthaul interface and the requirement for the buffer size of the receiving side and the sending side. At the same time, the configuration of the common time window is simple and has small signaling overhead.

[0337] Alternatively, by setting the independent time windows with the same length and the same offset for different sensing symbols received in a sensing period, the accuracy and rationality of the sensing data transmission window and the receiving window can be improved with certain signaling overhead and transmission window complexity. The overlap of the sensing symbol and the transmission window of the communication symbol is avoided as much as possible, thereby reducing the data flow of the fronthaul interface and the requirement for the buffer size of the transceiver side.

[0338] Alternatively, by setting the independent time windows with the same length and the same offset for different sensing symbols received in a sensing period, the accuracy and rationality of the sensing data transmission window and the receiving window can be improved with certain signaling overhead and transmission window complexity. The overlap of the sensing symbol and the transmission window of the communication symbol is avoided as much as possible, thereby reducing the data flow of the fronthaul interface and the requirement for the buffer size of the transceiver side.

[0339] FIG. 18 is another communication scenario provided by an embodiment of the present application.

[0340] It is considered that the above-mentioned embodiments can also be applied to the O-RAN network architecture. Therefore, FIG. 18 shows a scenario under the O-RAN architecture. In the O-RAN architecture, the access network device can be divided into three functional entities, O-RU, O-DU and O-CU. The O-RU is similar to the RU, the O-DU is similar to the DU, and the O-CU is similar to the CU. The interfaces between the functional entities can be referred to the description of the foregoing embodiments, and the embodiments of the present application will not be described here. The O-RAN network architecture can also include a near-real-time RIC (RAN intelligent controller) and a service management and orchestration (SMO).

[0341] The near-real-time RIC is mainly used to collect network information and perform necessary optimization tasks. The near-real-time RIC can communicate with the O-CU and the O-DU through the E2 interface. The near-real-time RIC can include a QoS management module, a radio connection management module, an interference management module and a mobility management module.

[0342] The SMO can include multiple functional modules, such as a non-real-time RIC, a configuration module, a policy module, a design module, an inventory module, and the like. The main functions of the SMO can include cloud infrastructure operations, administration and maintenance (OAM). For example, the cloud infrastructure is operated, maintained, and managed through the O2 interface. The SMO can also operate, maintain, and manage the RAN through the O1 interface. The SMO can also include a non-real-time RIC, such as combining artificial intelligence (AI) technology and big data analysis technology, to implement non-real-time macro control and intervention on the O-RAN through the A1 interface. Each functional entity in the O-RAN can be used as an independent functional entity and communicate with the SMO through the O1 interface. In some examples, the SMO and the near-real-time RIC can communicate through the A1 interface or the O1 interface. The appropriate communication path can be selected according to the actual situation, and the embodiments of the present application will not be described here.

[0343] Next, how to implement the above scheme in the O-RAN scenario is described in combination with FIG. 19 and FIG. 20.

[0344] FIG. 19 is another network architecture provided by an embodiment of the present application.

[0345] Similar to FIG. 11, in FIG. 19, the first logical unit is O-RU, the second logical unit is O-DU, and the third logical unit is O-CU. The first core network element is SF, and the second core network element is AMF. The architecture can also include the near-real-time RIC and the SMO shown in FIG. 18. The SMO can include a non-real-time RIC. The interfaces between the various units can be referred to the description of the previous embodiments, and the embodiments of the present application will not be described here.

[0346] In some examples, the near-real-time RIC or the SMO can support the allocation of communication resources for sensing signals and real-time indication of the RU for transmitting and receiving the sensing signals on the allocated communication resources. The communication resources can include one or more of time domain resources, frequency domain resources, spatial domain resources, power domain resources, and code domain resources. The near-real-time RIC or the SMO can also have a delay management function of the fronthaul interface and configure the first time window and the second time window of the sensing data on the fronthaul interface to the DU and the RU, respectively.

[0347] FIG. 20 is another communication method provided by an embodiment of the present application.

[0348] The communication process can be applied to, but not limited to, the communication scenarios shown in FIG. 1 and FIG. 18. And can be applied to the network architecture shown in FIG. 19. The method can be applied to LTE, LTE FDD, LTE TDD, 5G system or NR system, subsequent evolution of communication system (such as future communication system), V2X which can include V2N, V2V, V2I, V2P, etc., LTE-V, vehicle networking, MTC, IoT, LTE-M, M2M, D2D, etc. wireless communication scenarios. The RU, DU and CU involved in the embodiments of the present application can be access network devices. Among them, RU, DU and / or DU can be deployed on the same access network device, or can be deployed on different access network devices respectively, which is not limited in the embodiments of the present application. AMF and / or SF can be deployed on the same core network device, or can be deployed on different core network devices respectively, which is not limited in the embodiments of the present application.

[0349] The method can include the following steps:

[0350] S301, the SF sends the third information to the AMF. Correspondingly, the AMF receives the third information from the SF.

[0351] S302, the AMF sends the third information to the O-CU. Correspondingly, the O-CU receives the third information from the AMF.

[0352] Among them, the implementation process of S301-S302 is similar to S201-S202, the difference is that CU is replaced by O-CU, which will not be repeated here in the embodiments of the present application.

[0353] S303, the O-CU sends the third information to the near real-time RIC or SMO. Correspondingly, the near real-time RIC or SMO receives the third information from the O-CU.

[0354] For example, the O-CU can forward the perception task request information (i.e. the third information) issued by the SF to the near real-time RIC through the E2 interface, or to the SMO (such as the non-real-time RIC in the SMO) through the O1 interface. Or, the O-CU first forwards the request information to the near real-time RIC function through the E2 interface, and then further forwards it to the SMO or the non-real-time RIC function in the SMO through the A1 interface by the near real-time RIC.

[0355] S304, the near real-time RIC or SMO determines the first information according to the third information and / or the second information.

[0356] Among them, the implementation process of S304 is similar to S204, the difference is that DU is replaced by near real-time RIC or SMO, which will not be repeated here in the embodiments of the present application.

[0357] Next, how the O-RU obtains the first information will be described in different ways.

[0358] Way 1:

[0359] S305, the near real-time RIC or SMO sends the first information to the O-DU. Accordingly, the O-DU receives the first information from the near real-time RIC or SMO.

[0360] S306, the O-DU sends the first information to the O-RU. Accordingly, the O-RU receives the first information from the O-DU.

[0361] For example, when the first information is generated by the near real-time RIC, the near real-time RIC can send the first information to the O-DU through the E2 interface, and then the O-DU sends the first information to the O-RU through the LLS interface. Alternatively, the near real-time RIC can first send the first information to the O-CU through the E2 interface, and then the O-CU forwards the first information to the O-DU through the F1 interface, and the O-DU forwards the first information to the O-RU through the LLS interface.

[0362] For another example, when the first information is generated by the SMO, the SMO sends the first information to the O-DU through the O1 interface, and then the O-DU sends the first information to the O-RU through the LLS interface. Alternatively, the SMO sends the first information to the near real-time RIC through the A1 interface, and then the near real-time RIC forwards the first information to the O-DU through the E2 interface, and then the O-DU forwards the first information to the O-RU through the LLS interface. Alternatively, the near real-time RIC can first send the first information to the O-CU through the E2 interface, and then the O-CU forwards the first information to the O-DU through the F1 interface, and the O-DU forwards the first information to the O-RU through the LLS interface.

[0363] Way 2:

[0364] S307, the near real-time RIC or SMO sends the first information to the O-RU. Accordingly, the O-RU receives the first information from the near real-time RIC or SMO.

[0365] For example, when the first information is generated by the SMO, the SMO sends the first information to the O-RU through the O1 interface.

[0366] The LLS, O1, E2 and A1 interfaces in the above-mentioned way 1 and way 2 can refer to the architecture and interfaces shown in FIG. 18 and FIG. 19.

[0367] S308, the O-RU receives the sensing signal.

[0368] S309, the O-RU sends the first data to the O-DU. Accordingly, the O-DU receives the first data from the O-RU.

[0369] The implementation process of S308-S309 is similar to that of S206-S207, except that the RU is replaced by the O-RU and the DU is replaced by the O-DU, and the embodiments of the present application will not be described here.

[0370] In some embodiments, the above scheme can be implemented by a QoS management function module, a wireless connection management function module, or an interference management function module in near real-time RIC, or by a non-real-time RIC function module, a list module function, a design module function, or a configuration function module in SMO. The related function module description can refer to the related description of FIG. 16, and the embodiments of the present application will not be described here.

[0371] The embodiments of the present application consider that under the O-RAN architecture, the sending time window and the receiving time window of the perception signal data on the O-DU and the O-RU are decided by the near real-time RIC or the SMO, which can more intelligently and accurately complete the sending and receiving of the perception signal data on the fronthaul interface.

[0372] In the communication method provided by the embodiments of the present application, it is considered that future network nodes can not only have transmission functions, but also have functions such as radar detection. Therefore, the embodiments of the present application are also applicable to similar network devices when sending detection signals, and the sending time and receiving time of the perception data corresponding to the signal on the fronthaul interface can be flexibly configured to achieve accurate sending and receiving of data on the fronthaul interface.

[0373] It can be understood that each of the above embodiments of the present application can be independently implemented, or can be combined with each other; there is no absolute affiliation between the embodiments, and they can be combined with each other under any condition to obtain the corresponding effect.

[0374] It can be understood that, in order to implement the functions in the above embodiments, the network device includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driven hardware depends on the specific application scenario and design constraints of the technical solution.

[0375] FIG. 21 and FIG. 22 are structural diagrams of possible communication devices provided by the embodiments of the present application. The communication devices can be used to implement the functions of the first network-side device or the second network-side device in the above-mentioned method embodiments, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiments. In the embodiments of the present application, the communication device can be the RAN node 110 shown in FIG. 1, wherein the RAN node can also be referred to as an access network device, a network device. The communication device can also be a module (such as a chip) applied to a network device.

[0376] In the embodiments of the present application, the device used to implement the functions of the network device can be the network device, or can be a device capable of supporting the network device to implement the functions, such as a chip system, which can be installed in the network device or used in combination with the network device.

[0377] In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0378] As shown in FIG. 21, the communication device 2100 includes a processing unit 2110 and a transceiver unit 2120. The communication device 2100 is used to implement the functions of the network device in the above-mentioned method embodiments shown in FIG. 12, FIG. 14 and FIG. 20.

[0379] When the communication device 2100 is used to implement the functions of the first network-side device in the method embodiment shown in FIG. 12, the processing unit 2110 is used to acquire first information. The transceiver unit 2120 is used to receive a sensing signal. The processing unit 2110 is further used to control the transceiver unit 2120 to transmit first data based on a first time window.

[0380] When the communication device 2100 is used to implement the functions of the second network-side device in the method embodiment shown in FIG. 12, the transceiver unit 2120 is used to transmit first information. The transceiver unit 2120 is further used to receive first data. In some examples, the processing unit 2110 can be used to determine the first information.

[0381] For more detailed descriptions of the processing unit 2110 and the transceiver unit 2120, reference can be made to the related descriptions of the method embodiments shown in FIG. 12, FIG. 14 and FIG. 20.

[0382] As shown in FIG. 22, the communication apparatus 2200 includes a processor 2210 and an interface circuit 2220. The processor 2210 and the interface circuit 2220 are coupled to each other. It can be understood that the interface circuit 2220 can be a transceiver or an input / output interface. Optionally, the communication apparatus 2200 can further include a memory 2230 for storing instructions executed by the processor 2210 or storing input data required by the processor 2210 to execute instructions or storing data generated after the processor 2210 executes instructions. Sometimes, the interface circuit 2220 can also be understood as a part of the processor 2210, and the communication apparatus 2200 includes the processor 2210.

[0383] When the communication apparatus 2200 is used to implement the methods shown in FIG. 12, FIG. 14, and FIG. 20, the processor 2210 is configured to implement the functions of the processing unit 2110, and the interface circuit 2220 is configured to implement the functions of the transceiver unit 2120.

[0384] When the above communication apparatus is a chip applied to an access network device, the access network device chip implements the functions of the access network device in the above method embodiments. The access network device chip receives information from a terminal or a core network device, which can be understood as that the information is first received by other modules (such as a radio frequency module or an antenna) in the access network device, and then transmitted to the access network device chip by these modules. The access network device chip transmits information to a terminal or a core network device, which can be understood as that the information is first transmitted to other modules (such as a radio frequency module or an antenna) in the terminal or the core network device, and then transmitted to the terminal or the core network device by these modules.

[0385] In this application, entity A sending information to entity B can be A directly sending to B, or A indirectly sending to B through other entities. Similarly, entity B receiving information from entity A can be entity B directly receiving information sent by entity A, or entity B indirectly receiving information sent by entity A through other entities. Here, entity A and B can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be the information interaction between RAN nodes and terminals, for example, the information interaction between base stations and terminals; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between CUs and DUs; the sending and receiving of information can also be the information interaction between different modules inside one apparatus, for example, the information interaction between a terminal chip and other modules of the terminal, or the information interaction between a base station chip and other modules of the base station.

[0386] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be one or a combination of other general-purpose processors, digital signal processors (DSPs), microprocessor units (MPUs), microcontroller units (MCUs), graphics processing units (GPUs), application specific integrated circuits, field programmable gate arrays (FPGAs), artificial intelligence processors (AI processors), or neural processing units (NPUs); or the processor mentioned in the embodiments of the present application can be an application specific integrated circuit (ASIC) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component (or part) or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor, etc.

[0387] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a memory, such as a volatile memory and / or a non-volatile memory. The non-volatile memory can be a flash memory, a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), or an electrically EPROM (EEPROM). The volatile memory can be a cache, a random access memory (RAM). For example, the RAM can be used as an external cache. By way of example, and not limitation, the RAM includes the following various forms: a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synchlink DRAM (SLDRAM), and a direct rambus RAM (DR RAM). The memory can also be a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known in the art.

[0388] It should be noted that when the processor is a general processor, a DSP, an ASIC, other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) can be integrated in the processor. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as separate components in the base station or the terminal.

[0389] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments are performed. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs or instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs or instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center through wired or wireless manner. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center and the like integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0390] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0391] In the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship between the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the literal description of the present application, the character " / ", generally represents that the associated objects before and after are in an "or" relationship; in the formula of the present application, the character " / ", represents that the associated objects before and after are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0392] It can be understood that various numbers involved in the embodiments of the present application are only distinguished for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to its function and inherent logic.

[0393] The network architecture and service scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0394] The terms "first" and "second" and the like in the specification and drawings of the embodiments of the present application are used to distinguish different objects or different processing of the same object. The terms "first", "second" and the like can be used to distinguish the same items or similar items with basically the same function and role. For example, the first device and the second device are only used to distinguish different devices, and do not limit the sequence. Those skilled in the art can understand that the terms "first", "second" and the like do not limit the quantity and execution sequence, and the terms "first", "second" and the like do not necessarily mean different.

[0395] In addition, the terms "include" and "have" and any variations thereof mentioned in the description of the embodiments of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include other steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0396] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present concepts in a concrete manner. The words "first", "second", and the like can be used to distinguish different objects.

[0397] It can be understood that the "embodiments" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the embodiments of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments. It can be understood that in various embodiments of the embodiments of the present application, the size of the sequence number of each process does not mean the execution order, and the execution order of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0398] It can be understood that, in the embodiments of the present application, "… time" and "if" all refer to making corresponding processing under certain objective conditions, and are not limited to time, and do not require judgment actions when implementing, nor mean that there are other limitations.

[0399] It can be understood that, in some optional features in the embodiments of the present application, in some scenarios, they can be implemented independently without relying on other features, such as the scheme currently based on, to solve the corresponding technical problems and achieve the corresponding effects, and in some scenarios, they can be combined with other features according to the needs. Correspondingly, the devices given in the embodiments of the present application can also implement these features or functions, which will not be described here.

[0400] In the embodiments of the present application, the same or similar parts of different embodiments can be mutually referred to, unless otherwise specified. In the embodiments of the present application, and in each implementation method / implementation method / implementation method of each embodiment, if there is no special specification and logical conflict, the terms and / or descriptions of different embodiments, and each implementation method / implementation method / implementation method in each embodiment are consistent and can be mutually referred to, and the technical features of different embodiments, and each implementation method / implementation method / implementation method in each embodiment can be combined to form new embodiments, implementation methods, implementation methods, or implementation methods according to their inherent logical relationship. The implementation methods of the embodiments of the present application described below do not constitute a limitation on the protection scope of the embodiments of the present application.

Claims

1. A communication method characterized by comprising: The method is applied to a first network side device, and the method comprises: obtaining first information, the first information being used for indicating a first time window; receiving a sensing signal; sending first data based on the first time window, wherein the first data is determined based on the sensing signal.

2. The method of claim 1, wherein, The first information comprises a first time window parameter, wherein the first time window parameter is determined by a sensing quality of service (QoS) requirement and / or second information, and the second information is used for representing resource usage of a second network side device; the method further comprises: determining the first time window according to a receiving time of the sensing signal, a first time length and the first time window parameter, wherein the first time length is a time length for processing the sensing signal.

3. The method of claim 2, wherein, The first time window parameter comprises: a first time window length, the first time window length being a length of the first time window; or the first time window length and a first offset, the first offset being an offset of a starting time of the first time window relative to an ending time of the first time length; or the first time window length and a second offset, the second offset being an offset of an ending time of the first time window relative to the ending time of the first time length; or the first offset and the second offset.

4. The method of claim 3, wherein: the first time window parameter comprises the first time window length, a starting time of the first time window is greater than or equal to a sum of a minimum value of the receiving time of the sensing signal and the first time length, and an ending time of the first time window is less than or equal to a sum of the receiving time of the sensing signal, a maximum value of the first time length and the first time window length; or the first time window parameter comprises the first time window length and the first offset, the starting time of the first time window is greater than or equal to a sum of the receiving time of the sensing signal, the minimum value of the first time length and the first offset, and the ending time of the first time window is less than or equal to a sum of the receiving time of the sensing signal, the maximum value of the first time length, the first offset and the first time window length; or the first time window parameter comprises the first time window length and the second offset, the starting time of the first time window is greater than or equal to a sum of the receiving time of the sensing signal, the minimum value of the first time length and the second offset, and minus the first time window length, and the ending time of the first time window is less than or equal to a sum of the receiving time of the sensing signal and the maximum value of the first time length and the second offset; or the first time window parameter comprises the first offset and the second offset, the starting time of the first time window is greater than or equal to a sum of the receiving time of the sensing signal, the minimum value of the first time length and the first offset, and the ending time of the first time window is less than or equal to a sum of the receiving time of the sensing signal and the maximum value of the first time length and the second offset.

5. The method according to any one of claims 2-4, characterized in that, The first time window is a first time window corresponding to M sensing symbols, the sensing signal includes the M sensing symbols, and the first data is determined based on the M sensing symbols, where M is a positive integer. The first time window is determined according to the receiving time of the sensing signal, the first time length, and the first time window parameter. The first time window is determined according to the receiving time of the i th sensing symbol, the first time length, and the first time window parameter, where the i th sensing symbol is any one of the M sensing symbols, and i is a positive integer less than or equal to M.

6. The method according to any one of claims 2-4, characterized in that, The first time window includes M first time windows corresponding to M sensing symbols, the sensing signal includes the M sensing symbols, and the first data is determined based on the M sensing symbols, where M is a positive integer. The first time window is determined according to the receiving time of the sensing signal, the first time length, and the first time window parameter. For the i th sensing symbol, the first time window corresponding to the i th sensing symbol is determined according to the receiving time of the i th sensing symbol, the first time length, and the first time window parameter, where the i th sensing symbol is any one of the M sensing symbols, and i is a positive integer less than or equal to M. The first data is transmitted based on the first time window. For the i th sensing symbol, the first data corresponding to the i th sensing symbol is transmitted based on the first time window corresponding to the i th sensing symbol.

7. The method of claim 6, wherein, The first time window corresponding to the M sensing symbols is the same; or, the first time window corresponding to the M sensing symbols is partially or entirely different.

8. The method of claim 7, wherein, The first time window corresponding to the M sensing symbols is partially or entirely different, the first time window parameter is N first time window parameters, and N is a positive integer less than or equal to M.

9. The method according to any one of claims 1-8, characterized in that, The receiving time of the sensing signal is equal to the sending time of the sensing signal; or, The receiving time of the sensing signal is equal to the sum of the sending time of the sensing signal and a time offset; or, The receiving time of the sensing signal is equal to the sum of the sending time of the sensing signal, a time offset, and a cyclic prefix (CP) length.

10. A communication method characterized by comprising: The method is applied to a second network side device, and the method includes: Sending first information, where the first information is used to indicate a first time window, the first time window is a time window corresponding to the sending of first data by a first network side device, and the first data is determined based on a sensing signal; Receiving the first data.

11. The method of claim 10, wherein, The method further includes: Determining a second time window according to the first time window and a second time length, where the second time length is a communication time delay between the first network side device and the second network side device. The first data is received based on the second time window.

12. The method of claim 11, wherein ​ The first information comprises a first time window length, a start time of the second time window is less than or equal to a sum of a minimum value of the first time length and a minimum value of the second time length and a receiving time of the sensing signal, and an end time of the second time window is greater than or equal to a sum of a maximum value of the first time length and a maximum value of the second time length and the first time window length and a receiving time of the sensing signal; or The first information comprises the first time window length and a first offset, a start time of the second time window is less than or equal to a sum of a minimum value of the first time length and a minimum value of the second time length and the first offset and a receiving time of the sensing signal, and an end time of the second time window is greater than or equal to a sum of a maximum value of the first time length and the first offset and the first time window length and a maximum value of the second time length and a receiving time of the sensing signal; Or The first information comprises the first time window length and a second offset, a start time of the second time window is less than or equal to a sum of a minimum value of the first time length and a minimum value of the second time length and the second offset and a receiving time of the sensing signal, and an end time of the second time window is greater than or equal to a sum of a maximum value of the first time length and the second offset and a maximum value of the second time length and a receiving time of the sensing signal; Or The first information comprises the first offset and the second offset, a start time of the second time window is less than or equal to a sum of a minimum value of the first time length and a minimum value of the second time length and the first offset and a receiving time of the sensing signal, and an end time of the second time window is greater than or equal to a sum of a maximum value of the first time length and the second offset and a maximum value of the second time length and a receiving time of the sensing signal. The first time window length is a length of the first time window, the first offset is an offset of a start time of the first time window relative to an end time of the first time length, the second offset is an offset of an end time of the first time window relative to the end time of the first time length, and the first time length is a time length for processing the sensing signal.

13. The method according to any one of claims 10-12, characterized in that, The first information comprises a first time window parameter, wherein the first time window parameter is determined by a sensing quality of service (QoS) requirement and / or second information used to represent resource usage of a second network side device; and the method further comprises: determining the first time window according to a receiving time of the sensing signal, a first time length and the first time window parameter, wherein the first time length is a time length for processing the sensing signal.

14. The method of claim 13, wherein, The first time window parameter comprises: a first time window length, wherein the first time window length is a length of the first time window; or the first time window length and a first offset, wherein the first offset is an offset of a start time of the first time window relative to an end time of the first time length; or the first time window length and a second offset, wherein the second offset is an offset of an end time of the first time window relative to the end time of the first time length; or the first offset and the second offset.

15. The method of claim 14, wherein the first time window parameter comprises the first time window length, a start time of the first time window is greater than or equal to a sum of a reception time of the sensing signal and a minimum of the first time duration, and an end time of the first time window is less than or equal to a sum of the reception time of the sensing signal, a maximum of the first time duration, and the first time window length; or, the first time window parameter comprises the first time window length and the first offset, the start time of the first time window is greater than or equal to a sum of the reception time of the sensing signal, the minimum of the first time duration, and the first offset, and the end time of the first time window is less than or equal to a sum of the reception time of the sensing signal, the maximum of the first time duration, the first offset, and the first time window length; or, the first time window parameter comprises the first time window length and the second offset, the start time of the first time window is greater than or equal to a sum of the reception time of the sensing signal, the minimum of the first time duration, and the second offset, and subtracting the first time window length, and the end time of the first time window is less than or equal to a sum of the reception time of the sensing signal and the maximum of the first time duration and the second offset; or, the first time window parameter comprises the first offset and the second offset, the start time of the first time window is greater than or equal to a sum of the reception time of the sensing signal and the minimum of the first time duration and the first offset, and the end time of the first time window is less than or equal to a sum of the reception time of the sensing signal and the maximum of the first time duration and the second offset. The first time window is one first time window corresponding to M sensing symbols, the sensing signal comprises the M sensing symbols, and the first data is determined based on the M sensing symbols, wherein M is a positive integer. The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises:

16. The method according to any one of claims 10-15, characterized in that, The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises:

17. The method of any of claims 10-15, wherein, The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first time duration, and the first time window parameter comprises: The determining the first time window according to the reception time of the sensing signal, the first The first data is transmitted based on the first time window. The first data corresponding to the ith sensing symbol is transmitted based on the first time window corresponding to the ith sensing symbol.

18. The method of claim 17, wherein, The first time windows corresponding to the M sensing symbols are the same; or, the first time windows corresponding to the M sensing symbols are partially or totally different.

19. The method of claim 18, wherein, The first time windows corresponding to the M sensing symbols are partially or totally different, the first time window parameters are N first time window parameters, and N is a positive integer less than or equal to M.

20. The method of any of claims 10-19, wherein, The receiving time of the sensing signal is equal to the transmitting time of the sensing signal; or, The receiving time of the sensing signal is equal to the sum of the transmitting time of the sensing signal and a time offset; or, The receiving time of the sensing signal is equal to the sum of the transmitting time of the sensing signal, a time offset, and a cyclic prefix (CP) length.

21. A communication system, characterized by The method comprises the following steps: The second network-side device is configured to transmit first information to the first network-side device, wherein the first information is used to indicate a first time window, The first network-side device is configured to receive a sensing signal; The first network-side device is configured to transmit first data to the second network-side device based on the first time window, wherein the first data is determined based on the sensing signal; The second network-side device is configured to receive the first data.

22. A communications device, characterized by The apparatus comprises a module for executing the method of any one of claims 1-20.

23. A communications device, characterized by The apparatus comprises a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices and transmit signals to the processor or transmit signals from the processor to other communication devices, and the processor is configured to implement the method of any one of claims 1-20 by logic circuit and / or executing code instructions.

24. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, and when the computer program or instructions are executed by a communication device, the method of any one of claims 1-20 is implemented.

25. A computer program product comprising computer programs or instructions, characterized in that, The computer program or instructions are executed by a communication device to implement the method of any one of claims 1-20.

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