Communication method and device

Abstract

The invention provides a communication method and device, and relates to the field of wireless communication. The method comprises the following steps: receiving a first signal on a first time domain resource in a first time unit, receiving a second signal on a second time domain resource in the first time unit, and determining a third spatial domain parameter according to the first signal and the second signal; wherein the first time unit comprises a second time domain resource and a third time domain resource, the third time domain resource is used for bearing a cyclic prefix, the first time domain resource is a part of time domain resource or all time domain resource of the third time domain resource, the first signal corresponds to a first spatial domain parameter, and the second signal corresponds to a second spatial domain parameter; the first airspace parameter is different from the second airspace parameter. In the process, the cyclic prefix is used for determining the third spatial domain parameter, so that reference signals carried by the time domain resource for data transmission can be reduced, the spectrum efficiency of data transmission is improved, and the capacity of a communication system is further improved.

Description

Technical Field

[0001] This application relates to the field of wireless communications, and in particular, to communication methods and apparatuses. Background Art

[0002] In a wireless communication system, reference signals can be used for beam tracking. For example, a network device sends multiple reference signals to a terminal, and the beams of the multiple reference signals point to different directions respectively. After the terminal determines the reference signal with the strongest received power, it indicates the beam corresponding to the reference signal to the network device, and the network device can use this beam to continue sending signals subsequently. However, for the communication scenario where the terminal moves at high speed, the update frequency of the beam by the terminal becomes higher, and the network device needs to configure high-density reference signals for the terminal in the time domain for beam tracking. However, in this way, the overhead of the reference signals for beam tracking (hereinafter, for the sake of description, the "reference signals for beam tracking" will be simply referred to as "reference signals") becomes larger, resulting in low spectral efficiency of data transmission and low communication system capacity. Summary of the Invention

[0003] This application provides communication methods and apparatuses, which can improve the spectral efficiency of data transmission and thus improve the capacity of the communication system.

[0004] To achieve the above object, the following technical solutions are adopted in this application:

[0005] In a first aspect, a communication method is provided, and this method can be executed by a signal receiving end. Here, the signal receiving end can refer to the signal receiving end itself, or a processor, module, logical node, chip, or chip system in the signal receiving end that implements this method. Exemplarily, the signal receiving end can be a terminal or a radio access network (RAN) node, etc.

[0006] The method includes: receiving a first signal on a first time-domain resource within a first time unit, and determining a third spatial domain parameter according to the first signal. Among them, the first time unit includes a third time-domain resource, and the third time-domain resource is used to carry a cyclic prefix; the first time-domain resource is a partial time-domain resource or all of the time-domain resources of the third time-domain resource; the first signal corresponds to a first spatial domain parameter. Among them, the third time-domain resource is used to carry a cyclic prefix can be replaced with the signal corresponding to the third time-domain resource is a cyclic prefix.

[0007] Based on the method provided in the above first aspect, the signal receiving end can determine the third spatial domain parameter according to the first signal on the first time-domain resource carrying a partial or all cyclic prefix. This method expands the use of the cyclic prefix, thereby reducing the transmission of reference signals (for example, reference signals for beam tracking) for determining the spatial domain parameter, improving the spectral efficiency of data transmission, and thus improving the capacity of the communication system.

[0008] In a possible implementation, the method further includes: receiving a second signal on a second time-domain resource within a first time unit, and determining a third spatial-domain parameter according to the first signal, including: determining the third spatial-domain parameter according to the first signal and the second signal. Wherein, the first time unit further includes the second time-domain resource, the second signal corresponds to a second spatial-domain parameter, and the first spatial-domain parameter is different from the second spatial-domain parameter.

[0009] Based on the above possible implementation, the signal receiving end can determine the third spatial-domain parameter according to the first signal and the second signal. For example, determining the third spatial-domain parameter according to the first spatial-domain parameter corresponding to the first signal and the second spatial-domain parameter corresponding to the second signal. Thus, the reference signal (for example, the reference signal for beam tracking) used to determine the third spatial-domain parameter can be reduced, and more spectrum resources can be used to transmit data, improving the spectrum efficiency of data transmission, and further improving the capacity of the communication system.

[0010] In a possible implementation, the third time-domain resource includes a first time-domain resource and a fourth time-domain resource.

[0011] Based on the above possible implementation, the first time-domain resource is a partial time-domain resource of the third time-domain resource. That is to say, the signal receiving end can determine the third spatial-domain parameter according to the first signal corresponding to the first time-domain resource corresponding to the partial cyclic prefix, and the remaining part of the cyclic prefix can still be used to eliminate inter-symbol interference.

[0012] In a possible implementation, in the time domain, the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource, and is continuous with the first time-domain resource.

[0013] Based on the above possible implementation, when the signal receiving end receives the signal of the first time unit, the fourth time-domain resource can implement the function of the cyclic prefix to eliminate the inter-symbol interference caused by the multipath effect, and the first time-domain resource can replace the reference signal for beam tracking transmitted in part of the second time-domain resource, which can improve the data transmission efficiency and the utilization rate of the spectrum resources for transmitting data.

[0014] In a possible implementation, the third time-domain resource includes a first time-domain resource, a fourth time-domain resource and a fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource, and the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource and is continuous with the first time-domain resource.

[0015] Based on the above possible implementation, the fifth time-domain resource is located before the first time-domain resource, the fourth time-domain resource and the second time-domain resource, which is convenient for eliminating the interference brought by the previous time unit of the first time unit in the presence of multipath effects.

[0016] In a possible implementation, the fourth time-domain resource corresponds to the second spatial-domain parameter. It can also be understood that the signal on the fourth time-domain resource corresponds to the second spatial-domain parameter.

[0017] Based on the above possible implementation, both the fourth time-domain resource and the second time-domain resource correspond to the second spatial-domain parameter, which facilitates the signal receiving end to eliminate the interference between the second time-domain resource and the time-domain resources before the fourth time-domain resource during the signal reception process on the fourth time-domain resource and the second time-domain resource when multipath effects exist.

[0018] In a possible implementation, the above method further includes: receiving a third signal on a sixth time-domain resource within a second time unit; receiving a fourth signal on a seventh time-domain resource within the second time unit; wherein the second time unit includes the seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is a partial or all of the time-domain resources of the eighth time-domain resource; the third signal corresponds to a first spatial-domain parameter, and the fourth signal corresponds to a second spatial-domain parameter; determining a third spatial-domain parameter according to the first signal and the second signal includes: determining the third spatial-domain parameter according to the first signal, the second signal, the third signal, and the fourth signal. Wherein, the eighth time-domain resource is used to carry a cyclic prefix can be replaced by the signal corresponding to the eighth time-domain resource is a cyclic prefix.

[0019] Based on the above possible implementation, the signal receiving end can accumulate the received powers of the first signal and the third signal, and accumulate the received powers of the second signal and the fourth signal, so as to improve the signal-to-noise ratio of the received signal and further improve the accuracy of beam tracking.

[0020] In a possible implementation, the first spatial-domain parameter, the second spatial-domain parameter, and the third spatial-domain parameter are the spatial-domain reception parameters of a first device, and the first device is the device that receives the first signal and the second signal. That is to say, the first device is the signal receiving end.

[0021] Based on the above possible implementation, the signal receiving end can determine a third spatial-domain reception parameter according to the spatial-domain reception parameter (such as the first spatial-domain parameter) corresponding to the first signal and the spatial-domain reception parameter corresponding to the second signal, so that the signal receiving end can receive signals according to the third spatial-domain reception parameter.

[0022] In a possible implementation, the above method further includes: sending first capability information, and the first capability information indicates whether the first device supports transmitting the first signal and the second signal respectively through different spatial-domain parameters.

[0023] Based on the above possible implementation manners, the signal receiving end may indicate to the device (such as the signal sending end) that receives the first capability information whether it supports transmitting the first signal and the second signal respectively through different spatial domain parameters, so that the signal sending end can determine whether to communicate with the signal receiving end by using the method of the first aspect.

[0024] In a possible implementation manner, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are the spatial domain transmission parameters of the second device, and the second device is the device that transmits the first signal and the second signal, that is, the second device is the signal sending end.

[0025] Based on the above possible implementation manners, the signal receiving end may determine the third spatial domain transmission parameter according to the spatial domain transmission parameter corresponding to the first signal and the spatial domain transmission parameter corresponding to the second signal, so that the signal sending end can transmit the signal according to the third spatial domain transmission parameter.

[0026] In a possible implementation manner, the above method further includes: sending a first indication information; the first indication information is used to indicate the third spatial domain parameter.

[0027] Based on the above possible implementation manners, it can enable the device that receives the first indication information, such as the signal sending end, to communicate with the signal receiving end according to the third spatial domain parameter.

[0028] In a possible implementation manner, the third spatial domain parameter is the central angle of the target beam, and the target beam is used for transmitting data.

[0029] Based on the above possible implementation manners, the signal receiving end may determine the central angle of the beam for transmitting data, which is convenient for communication between the receiving end and the sending end of the data.

[0030] In a possible implementation manner, the above method further includes: receiving a second indication information, and the second indication information is used to indicate that the first spatial domain parameter and the second spatial domain parameter are different.

[0031] Based on the above possible implementation manners, the signal receiving end may determine that the first spatial domain parameter and the second spatial domain parameter are different, and thus receive the first signal and the second signal in a corresponding manner. For example, if both the first spatial domain parameter and the second spatial domain parameter are spatial domain transmission parameters, the signal receiving end may receive the first signal and the second signal through different beams.

[0032] In a second aspect, a communication method is provided, and this method may be executed by the signal sending end. Here, the signal sending end may refer to the signal sending end itself, or may refer to a processor, a module, a logical node, a chip, or a chip system, etc. in the signal sending end that implements this method. Exemplarily, the signal sending end may be a RAN node or a terminal, etc.

[0033] The method includes: transmitting a first signal on a first time-domain resource within a first time unit. Wherein, the first time unit includes a second time-domain resource and a third time-domain resource, and the third time-domain resource is used to carry a cyclic prefix; the first time-domain resource is a partial or all of the time-domain resources of the third time-domain resource; the first signal corresponds to a first spatial domain parameter, and the first signal is used to determine a third spatial domain parameter. Wherein, the third time-domain resource is used to carry a cyclic prefix can be replaced with the signal corresponding to the third time-domain resource is a cyclic prefix.

[0034] Based on the method provided in the second aspect above, the signal transmitter can transmit the first signal on a partial or all of the time-domain resources carrying the cyclic prefix, so that the device receiving the first signal (such as a signal receiving device) can determine the third spatial domain parameter according to the first signal. This method expands the use of the cyclic prefix, thereby reducing the transmission of reference signals for determining spatial domain parameters (for example, reference signals for beam tracking), improving the spectral efficiency of data transmission, and further improving the capacity of the communication system.

[0035] In a possible implementation, the above method further includes: transmitting a second signal on a second time-domain resource within the first time unit. Wherein, the second signal corresponds to a second spatial domain parameter, the first spatial domain parameter and the second spatial domain parameter are different, and the second signal is used to determine the third spatial domain parameter.

[0036] Based on the above possible implementation, the signal transmitter can also transmit the second signal on the second time-domain resource, so that the device receiving the first signal and the second signal (such as a signal receiving end) can determine the third spatial domain parameter according to the first signal and the second signal. For example, determine the third spatial domain parameter according to the first spatial domain parameter corresponding to the first signal and the second spatial domain parameter corresponding to the second signal. Thereby reducing the transmission of reference signals for determining the third spatial domain parameter (for example, reference signals for beam tracking), more spectral resources can be used to transmit data, improving the spectral efficiency of data transmission, and further improving the capacity of the communication system.

[0037] In a possible implementation, the third time-domain resource includes a first time-domain resource and a fourth time-domain resource.

[0038] Based on the above possible implementation, the first time-domain resource being a partial time-domain resource of the third time-domain resource enables the signal receiving end to determine the third spatial domain parameter according to the first signal corresponding to the first time-domain resource carrying a partial cyclic prefix, and the remaining part of the cyclic prefix can still be used to eliminate inter-symbol interference.

[0039] In a possible implementation, in the time domain, the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource, and is continuous with the first time-domain resource.

[0040] Based on the above possible implementation manners, when the signal sending end sends the signal of the first time unit, since the first signal can replace the reference signal for beam tracking transmitted in part of the second time domain resources, the data transmission efficiency and the utilization rate of the spectrum resources for transmitting data can be improved.

[0041] In a possible implementation manner, the third time domain resources include the first time domain resources, the fourth time domain resources, and the fifth time domain resources. In the time domain, the fifth time domain resources are located before the first time domain resources and are continuous with the first time domain resources. The fourth time domain resources are located after the first time domain resources and before the second time domain resources and are continuous with the first time domain resources.

[0042] Based on the above possible implementation manner, the fifth time domain resources are located before the first time domain resources, the fourth time domain resources, and the second time domain resources, which is convenient for eliminating the interference brought by the previous time unit of the first time unit when multipath effects exist.

[0043] In a possible implementation manner, the fourth time domain resources correspond to the second spatial domain parameters.

[0044] Based on the above possible implementation manner, both the fourth time domain resources and the second time domain resources correspond to the second spatial domain parameters. When the signal sending end sends the fourth time domain resources and the second time domain resources according to the second spatial domain parameters when multipath effects exist, the fourth time domain resources can eliminate the interference between the second time domain resources and the time domain resources before the fourth time domain resources.

[0045] In a possible implementation manner, the above method further includes: sending a third signal on the sixth time domain resources within the second time unit; sending a fourth signal on the seventh time domain resources within the second time unit; where the second time unit includes the seventh time domain resources and the eighth time domain resources, and the eighth time domain resources are used to carry the cyclic prefix; the sixth time domain resources are part or all of the time domain resources of the eighth time domain resources; the third signal corresponds to the fourth spatial domain parameters, the fourth signal corresponds to the fifth spatial domain parameters, the fourth spatial domain parameters are different from the fifth spatial domain parameters, and the third signal and the fourth signal are used to determine the third spatial domain parameters. Here, the eighth time domain resources are used to carry the cyclic prefix can be replaced with the signal corresponding to the eighth time domain resources is the cyclic prefix.

[0046] Based on the above possible implementation manner, the signal sending end sends the signal corresponding to the second time unit according to the above method, which is convenient for the device (such as the signal receiving end) that receives the third signal and the fourth signal to accumulate the received power of the first signal and the third signal, and accumulate the received power of the second signal and the fourth signal, thereby improving the signal-to-noise ratio of the received signal and further improving the accuracy of beam tracking.

[0047] In a possible implementation, the first airspace parameter, the second airspace parameter, and the third airspace parameter are airspace reception parameters of a first device. The first device is a device that receives a first signal and a second signal. That is to say, the first device is a signal receiving end.

[0048] Based on the above possible implementation, the signal receiving end can receive the signal sent by the signal sending end according to the third airspace parameter, and beam tracking can be more accurately achieved.

[0049] In a possible implementation, the above method further includes: receiving first capability information, where the first capability information indicates whether the first device supports transmitting the first signal and the second signal through different airspace parameters respectively.

[0050] Based on the above possible implementation, the signal sending end can determine whether it can send the first signal and the second signal to a device (such as a signal receiving end) that receives the first signal and the second signal through different airspace parameters according to the first capability information.

[0051] In a possible implementation, the first airspace parameter, the second airspace parameter, and the third airspace parameter are airspace transmission parameters of a second device. The second device is a device that transmits the first signal and the second signal. That is to say, the second device is a signal sending end.

[0052] Based on the above possible implementation, the signal receiving end can determine the third airspace transmission parameter.

[0053] In a possible implementation, the above method further includes: receiving first indication information; the first indication information is used to indicate the third airspace parameter.

[0054] Based on the above possible implementation, the signal sending end can obtain the third airspace parameter according to the first indication information, and thus communicate with the signal receiving end using the third airspace parameter.

[0055] In a possible implementation, the third airspace parameter is the central angle of a target beam, and the target beam is used to transmit data.

[0056] Based on the above possible implementation, the signal receiving end can determine the central angle of the beam used to transmit data, which is convenient for communication between the receiving end and the sending end of the data.

[0057] In a possible implementation, the above method further includes: sending second indication information, where the second indication information is used to indicate that the first airspace parameter and the second airspace parameter are different.

[0058] Based on the above possible implementation manners, the signal sender can use the second indication information to indicate to the device (such as the signal receiver) receiving the second indication information that the first spatial domain parameter is different from the second spatial domain parameter, so that the signal receiver can receive the first signal and the second signal in a corresponding manner. For example, if both the first spatial domain parameter and the second spatial domain parameter are spatial domain transmission parameters, the signal receiver can receive the first signal and the second signal through different beams.

[0059] In a third aspect, a communication method is provided, which can be executed by a terminal. Here, the terminal can refer to the terminal itself, or a processor, module, logical node, chip, or chip system in the terminal that implements this method.

[0060] The method includes: determining first capability information and sending the first capability information. The first capability information indicates whether it supports transmitting the first signal and the second signal respectively through different spatial domain parameters. The time domain resource of the first signal is the first time domain resource within the first time unit, and the time domain resource of the second signal is the second time domain resource within the first time unit. The first time unit includes the second time domain resource and the third time domain resource, the first time domain resource is included in the third time domain resource, and the third time domain resource is used to carry the cyclic prefix.

[0061] Based on the method provided in the above third aspect, the terminal can use the first capability information to enable the device (such as the RAN node) receiving the first capability information to know whether the terminal supports transmitting the first signal and the second signal respectively through different spatial domain parameters. If so, the device receiving the first capability information can configure fewer reference signals in the second signal to reduce the overhead of the reference signals, improve the spectral efficiency of data transmission, and thus improve the capacity of the communication system.

[0062] In a possible implementation manner, the above spatial domain parameter is a spatial domain reception parameter or a spatial domain transmission parameter.

[0063] Based on the above possible implementation manner, when the above spatial domain parameter is a spatial domain reception parameter or a spatial domain transmission parameter, the terminal indicates to the receiving device (such as the RAN node) receiving the first capability information whether it supports transmitting the first signal and the second signal using different spatial domain reception parameters.

[0064] In a possible implementation manner, the first capability information indicates support for transmitting the first signal and the second signal respectively through different spatial domain parameters. The above method further includes: transmitting the first signal on the first time domain resource; transmitting the second signal on the second time domain resource; where the first signal corresponds to the first spatial domain parameter, the second signal corresponds to the second spatial domain parameter, the first spatial domain parameter is different from the second spatial domain parameter, and the first signal and the second signal are used to determine the third spatial domain parameter.

[0065] Based on the above possible implementation manners, the terminal can, through the first capability information, indicate to a receiving device (such as a RAN node) that receives the first capability information that the terminal supports transmitting the first signal and the second signal respectively through different spatial domain parameters, and determine a third spatial domain parameter according to the first signal and the second signal. For example, the terminal determines the third spatial domain parameter according to the first spatial domain parameter corresponding to the first signal and the second spatial domain parameter corresponding to the second signal. Thus, it is possible to reduce the transmission of reference signals (such as reference signals for beam tracking) used to determine the third spatial domain parameter, and more spectrum resources can be used to transmit data, improving the spectrum efficiency of data transmission and further enhancing the capacity of the communication system.

[0066] In a possible implementation manner, the third time domain resource includes a first time domain resource and a fourth time domain resource.

[0067] Based on the above possible implementation manner, the first time domain resource is a partial time domain resource of the third time domain resource. That is to say, the terminal can determine the third spatial domain parameter according to the first signal corresponding to the first time domain resource carrying a partial cyclic prefix, and the remaining part of the cyclic prefix can still be used to eliminate inter-symbol interference.

[0068] In a possible implementation manner, in the time domain, the fourth time domain resource is located after the first time domain resource and before the second time domain resource, and is continuous with the first time domain resource.

[0069] Based on the above possible implementation manner, when the terminal receives the signal of the first time unit, the fourth time domain resource can implement the function of the cyclic prefix to eliminate the inter-symbol interference caused by the multipath effect, and the first time domain resource can replace the reference signal for beam tracking transmitted in a part of the second time domain resource, which can improve the data transmission efficiency and the utilization rate of the spectrum resources for transmitting data.

[0070] In a possible implementation manner, the third time domain resource includes a first time domain resource, a fourth time domain resource, and a fifth time domain resource. In the time domain, the fifth time domain resource is located before the first time domain resource and is continuous with the first time domain resource, and the fourth time domain resource is located after the first time domain resource and before the second time domain resource and is continuous with the first time domain resource.

[0071] Based on the above possible implementation manner, the fifth time domain resource is located before the first time domain resource, the fourth time domain resource, and the second time domain resource, which is convenient for eliminating the interference brought by the previous time unit of the first time unit in the presence of the multipath effect.

[0072] In a possible implementation manner, the fourth time domain resource corresponds to the second spatial domain parameter.

[0073] Based on the above possible implementation manners, both the fourth time-domain resource and the second time-domain resource correspond to the second spatial-domain parameter, which facilitates the terminal to eliminate the second time-domain resource and the interference between the time-domain resources before the fourth time-domain resource when receiving signals on the fourth time-domain resource and the second time-domain resource in the presence of multipath effects.

[0074] In a possible implementation manner, the above method further includes: transmitting a third signal on a sixth time-domain resource within a second time unit; transmitting a fourth signal on a seventh time-domain resource within the second time unit; where the second time unit includes the seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is part or all of the time-domain resources of the eighth time-domain resource; the third signal corresponds to a first spatial-domain parameter, the fourth signal corresponds to a second spatial-domain parameter, and the third signal and the fourth signal are used to determine a third spatial-domain parameter.

[0075] Based on the above possible implementation manners, the terminal can accumulate the received powers of the first signal and the third signal, and accumulate the received powers of the second signal and the fourth signal, so as to improve the signal-to-noise ratio of the received signal and further improve the accuracy of beam tracking.

[0076] In a possible implementation manner, the first spatial-domain parameter, the second spatial-domain parameter, and the third spatial-domain parameter are the spatial-domain reception parameters of a first device, and the first device is the device that receives the first signal and the second signal. That is to say, the first device is the signal receiving end.

[0077] Based on the above possible implementation manners, the terminal can determine a third spatial-domain reception parameter according to the spatial-domain reception parameter corresponding to the first signal (such as the first spatial-domain parameter) and the spatial-domain reception parameter corresponding to the second signal, so as to receive signals according to the third spatial-domain reception parameter.

[0078] In a possible implementation manner, the first spatial-domain parameter, the second spatial-domain parameter, and the third spatial-domain parameter are the spatial-domain transmission parameters of a second device, and the second device is the device that transmits the first signal and the second signal.

[0079] Based on the above possible implementation manners, the terminal can determine a third spatial-domain transmission parameter according to the spatial-domain transmission parameter corresponding to the first signal and the spatial-domain transmission parameter corresponding to the second signal, so as to transmit signals according to the third spatial-domain transmission parameter.

[0080] In a possible implementation manner, the above method further includes: transmitting first indication information; the first indication information is used to indicate the third spatial-domain parameter.

[0081] Based on the above possible implementation manners, it can enable a device that receives the first indication information, such as a RAN node, to communicate with the RAN node according to the third spatial-domain parameter.

[0082] In a possible implementation, the third airspace parameter is the central angle of the target beam, and the target beam is used for transmitting data.

[0083] Based on the above possible implementation, the central angle of the beam for transmitting data can be determined, facilitating communication between the receiving end and the transmitting end of the data.

[0084] In a possible implementation, the above method further includes: receiving second indication information, where the second indication information is used to indicate that the first airspace parameter is different from the second airspace parameter.

[0085] Based on the above possible implementation, the terminal can determine that the first airspace parameter is different from the second airspace parameter, and thus receive the first signal and the second signal in corresponding ways. For example, if both the first airspace parameter and the second airspace parameter are airspace transmission parameters, the signal receiving end can receive the first signal and the second signal through different beams.

[0086] In a fourth aspect, a communication method is provided, and this method can be executed by a RAN node. Here, the RAN node can refer to the RAN node itself, or a processor, module, logic node, chip, or chip system in the RAN node that implements this method, etc.

[0087] The method includes: receiving first capability information and communicating with the terminal according to the first capability information. Among them, the first capability information indicates whether the terminal supports transmitting the first signal and the second signal respectively through different airspace parameters. The time domain resource of the first signal is the first time domain resource within the first time unit, the time domain resource of the second signal is the second time domain resource within the first time unit, the first time unit includes the second time domain resource and the third time domain resource, the first time domain resource is included in the third time domain resource, and the third time domain resource is used to carry the cyclic prefix.

[0088] Based on the method provided in the above fourth aspect, the RAN node can know whether the device (such as the terminal) that sends the first capability information supports transmitting the first signal and the second signal respectively through different airspace parameters according to the first capability information. If so, the RAN node can configure fewer reference signals in the second signal to reduce the overhead of the reference signals, improve the spectral efficiency of data transmission, and further improve the capacity of the communication system.

[0089] In a possible implementation, the above airspace parameter is an airspace reception parameter or an airspace transmission parameter.

[0090] Based on the above possible implementation, when the above airspace parameter is an airspace reception parameter or an airspace transmission parameter, the RAN node can know whether the device (such as the terminal) that sends the first capability information supports transmitting the first signal and the second signal using different airspace reception parameters according to the first capability information.

[0091] In a possible implementation, the first capability information indicates that the terminal supports transmitting a first signal and a second signal respectively through different spatial domain parameters. When communicating with the terminal according to the first capability information, the above method further includes: transmitting the first signal on a first time domain resource; transmitting the second signal on a second time domain resource; where the first signal corresponds to a first spatial domain parameter, the second signal corresponds to a second spatial domain parameter, the first spatial domain parameter and the second spatial domain parameter are different, and the first spatial domain parameter and the second spatial domain parameter are used to determine a third spatial domain parameter.

[0092] Based on the above possible implementation, the RAN node can, according to the first capability information, know whether the terminal supports transmitting the first signal and the second signal respectively through different spatial domain parameters, determine the third spatial domain parameter according to the first signal and the second signal. If so, it can reduce the transmission of reference signals (such as reference signals for beam tracking) used to determine the third spatial domain parameter, and can use more spectrum resources to transmit data, improving the spectrum efficiency of data transmission and thus enhancing the capacity of the communication system.

[0093] In a possible implementation, the third time domain resource includes a first time domain resource and a fourth time domain resource.

[0094] Based on the above possible implementation, the first time domain resource is a partial time domain resource of the third time domain resource, which enables the RAN node to determine the third spatial domain parameter according to the first signal corresponding to the first time domain resource carrying a partial cyclic prefix, and the remaining part of the cyclic prefix can still be used to eliminate inter-symbol interference.

[0095] In a possible implementation, in the time domain, the fourth time domain resource is located after the first time domain resource and before the second time domain resource, and is continuous with the first time domain resource.

[0096] Based on the above possible implementation, when the RAN node transmits the signal of the first time unit, the fourth time domain resource can implement the function of the cyclic prefix to eliminate the inter-symbol interference caused by the multipath effect, and the first time domain resource can replace the reference signals for beam tracking transmitted in part of the second time domain resource, improving the data transmission efficiency and the utilization rate of the spectrum resources for transmitting data.

[0097] In a possible implementation, the third time domain resource includes a first time domain resource, a fourth time domain resource and a fifth time domain resource. In the time domain, the fifth time domain resource is located before the first time domain resource and is continuous with the first time domain resource, and the fourth time domain resource is located after the first time domain resource and before the second time domain resource and is continuous with the first time domain resource.

[0098] Based on the above possible implementation manners, the fifth time-domain resource is located before the first time-domain resource, the fourth time-domain resource, and the second time-domain resource, which facilitates eliminating the interference brought by the time unit before the first time unit in the presence of multipath effects.

[0099] In a possible implementation manner, the fourth time-domain resource corresponds to the second spatial domain parameter.

[0100] Based on the above possible implementation manners, both the fourth time-domain resource and the second time-domain resource correspond to the second spatial domain parameter, which facilitates, when multipath effects exist, the RAN node using the fourth time-domain resource to eliminate the interference between the second time-domain resource and the time-domain resources before the fourth time-domain resource when sending the fourth time-domain resource and the second time-domain resource according to the second spatial domain parameter.

[0101] In a possible implementation manner, the above method further includes: transmitting a third signal on a sixth time-domain resource within a second time unit; transmitting a fourth signal on a seventh time-domain resource within the second time unit; where the second time unit includes the seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is a partial time-domain resource or all of the time-domain resources of the eighth time-domain resource; the third signal corresponds to a fourth spatial domain parameter, the fourth signal corresponds to a fifth spatial domain parameter, the fourth spatial domain parameter is different from the fifth spatial domain parameter, and the third signal and the fourth signal are used to determine a third spatial domain parameter.

[0102] Based on the above possible implementation manners, the RAN node transmits the signals corresponding to the second time unit according to the above method, which facilitates a device (such as a terminal) receiving the third signal and the fourth signal to be able to accumulate the received power of the first signal and the third signal, and accumulate the received power of the second signal and the fourth signal, thereby improving the signal-to-noise ratio of the received signal and further improving the accuracy of beam tracking.

[0103] In a possible implementation manner, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are the spatial domain reception parameters of a first device, and the first device is a device receiving the first signal and the second signal.

[0104] Based on the above possible implementation manners, the terminal can receive the signals sent by the RAN node according to the third spatial domain parameter, and can more accurately implement beam tracking.

[0105] In a possible implementation manner, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are the spatial domain transmission parameters of a second device, and the second device is a device sending the first signal and the second signal, that is, the second device is the RAN node.

[0106] Based on the above possible implementation manners, the RAN node can determine the third spatial domain transmission parameter.

[0107] In a possible implementation, the above method further includes: receiving first indication information; the first indication information is used to indicate third spatial domain parameters.

[0108] Based on the above possible implementation, the RAN node can obtain the third spatial domain parameters according to the first indication information, and thus use the third spatial domain parameters to communicate with the terminal.

[0109] In a possible implementation, the third spatial domain parameter is the central angle of the target beam, and the target beam is used for transmitting data.

[0110] Based on the above possible implementation, it can enable the terminal to determine the central angle of the beam for transmitting data, which is convenient for communication between the receiving end and the sending end of the data.

[0111] In a possible implementation, the above method further includes: sending second indication information, where the second indication information is used to indicate that the first spatial domain parameter is different from the second spatial domain parameter.

[0112] Based on the above possible implementation, the RAN node can indicate to the device (such as the terminal) receiving the second indication information through the second indication information that the first spatial domain parameter is different from the second spatial domain parameter, so that the terminal can receive the first signal and the second signal in a corresponding manner. For example, if both the first spatial domain parameter and the second spatial domain parameter are spatial domain transmission parameters, the terminal can receive the first signal and the second signal through different beams.

[0113] In a fifth aspect, a communication device is provided for implementing the above method. The communication device can be the signal receiving end in the first aspect above; or, the communication device can be the signal sending end in the second aspect above; or, the communication device can be the terminal in the third aspect above; or, the communication device can be the RAN node in the fourth aspect above. The communication device includes corresponding modules, units, or means for implementing the above method, and the modules, units, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0114] Combined with the above fifth aspect, in a possible implementation, the communication device may include a processing module and an interface module. The processing module can be used to implement the processing functions in any of the above aspects and any of their possible implementations. The processing module can be, for example, a processor. The interface module, also referred to as an interface unit, is used to implement the sending and / or receiving functions in any of the above aspects and any of their possible implementations. The interface module can be composed of an interface circuit, a transceiver, a transceiver, or a communication interface.

[0115] Combined with the above fifth aspect, in a possible implementation, the interface module includes a sending module and a receiving module, which are respectively used to implement the sending and receiving functions in any of the above aspects and any of their possible implementation manners.

[0116] Sixth aspect, a communication device is provided, including: a processor; the processor is used to be coupled with a memory, and after reading instructions in the memory, execute the method in any of the above aspects according to the instructions. The communication device can be the signal receiving end in the first aspect above; or, the communication device can be the signal sending end in the second aspect above; or, the communication device can be the terminal in the third aspect above; or, the communication device can be the RAN node in the fourth aspect above.

[0117] Combined with the above sixth aspect, in a possible implementation, the communication device further includes a memory, which is used to store program instructions and data. Optionally, the memory is integrated with the above processor; or, the memory is independent of the processor.

[0118] Combined with the above sixth aspect, in a possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of chips, or can include chips and other discrete devices.

[0119] Seventh aspect, a communication device is provided, including: a processor and an interface circuit; the interface circuit is used to receive a computer program or instructions and transmit them to the processor; the processor is used to execute the computer program or instructions, so that the communication device executes the method in any of the above aspects. The communication device can be the signal receiving end in the first aspect above; or, the communication device can be the signal sending end in the second aspect above; or, the communication device can be the terminal in the third aspect above; or, the communication device can be the RAN node in the fourth aspect above.

[0120] Combined with the above seventh aspect, in a possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of chips, or can include chips and other discrete devices.

[0121] Eighth aspect, a computer-readable storage medium is provided, in which instructions are stored, and when it runs on a computer, it enables the computer to execute the method in any of the above aspects.

[0122] Ninth aspect, a computer program product including instructions is provided, and when it runs on a computer, it enables the computer to execute the method in any of the above aspects.

[0123] In a tenth aspect, a communication system is provided, which includes a signal receiving end for executing the method of the first aspect described above, and a signal transmitting end for executing the method of the second aspect described above.

[0124] In an eleventh aspect, a communication system is provided, which includes a terminal for executing the method of the third aspect described above, and a RAN node for executing the method of the fourth aspect described above.

[0125] Among them, for the technical effects brought by any possible implementation manner in the fifth aspect to the eleventh aspect, reference may be made to the technical effects brought by any one aspect or different possible implementation manners in any one of the first aspect to the fourth aspect, which will not be elaborated here.

[0126] It can be understood that, on the premise that the solutions do not conflict, the solutions in the above aspects can be combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0127] Figure 1 Schematic diagram of the communication system architecture provided by this application;

[0128] Figure 2 Schematic diagram of the hardware structure of the communication device provided by this application;

[0129] Figure 3 Schematic diagram of the process of the communication method provided by this application Figure 1 ;

[0130] Figure 4 Schematic diagram of the process of the communication method provided by this application Figure 2 ;

[0131] Figure 5A Schematic diagram of the time-domain distribution of the first signal and the second signal provided by this application Figure 1 ;

[0132] Figure 5B Schematic diagram of the time-domain distribution of the first signal and the second signal provided by this application Figure 2 ;

[0133] Figure 5C Schematic diagram of the time-domain distribution of the first signal and the second signal provided by this application Figure 3 ;

[0134] Figure 5D Beam diagram provided by this application;

[0135] Figure 6 Schematic diagram of the process of the communication method provided by this application Figure 3 ;

[0136] Figure 7 Schematic diagram of the structure of the communication device provided by this application. Detailed implementation manners

[0137] To reduce the overhead of reference signals and improve the spectral efficiency of data transmission, the present application provides a communication method, which can be applied to a signal sending end and a signal receiving end. In this method, the signal sending end can send a first signal to the signal receiving end on a first time domain resource within a first time unit. After receiving the first signal on the first time domain resource within the first time unit, the signal receiving end can determine a third spatial domain parameter according to the first signal. Among them, the first time unit includes a third time domain resource, and the third time domain resource is used to carry a cyclic prefix (CP); the first time domain resource is part or all of the time domain resources of the third time domain resource; the first signal corresponds to a first spatial domain parameter.

[0138] In the above process, the signal receiving end can determine the third spatial domain parameter based on part or all of the CP (i.e., the first signal) sent by the signal sending end. That is to say, this method can expand the use of CP and use CP to determine the third spatial domain parameter. Thereby, the transmission of reference signals for determining spatial domain parameters (for example, reference signals for beam tracking) can be reduced, the spectral efficiency of data transmission can be improved, and thus the capacity of the communication system can be improved. For example, in the case where part or all of the CP is not used to determine the third spatial domain parameter, it is necessary to transmit reference signals for beam tracking within multiple time units in a period of time (for example, within a period of 20 time units, configure reference signals for beam tracking on the 5th, 10th, 15th, and 20th time units, and the corresponding time domain overhead is 20%). However, in the case where part or all of the CP is used to determine the third spatial domain parameter, there is no need to configure reference signals for beam tracking anymore, and beam tracking can be performed using the CP of part of the time units. By expanding the use of CP, the time domain overhead of reference signals for beam tracking is reduced, and thus the communication capacity is improved.

[0139] It can be understood that CP usually refers to the prefix of a symbol. For example, the cyclic extension signal generated by shifting the signal at the tail of the symbol to the head can form a guard interval between symbols to eliminate inter symbol interference (ISI). For example, for the wireless transmission channel between a base station and a terminal, due to changes in the environment, terrain, and clutter, there is a multipath effect. CP can be used to reduce the impact of the multipath effect on wireless communication. Therefore, for scenarios with small ISI, CP can be used for other purposes. For example, in the urban air mobility (UAM) scenario, line-of-sight communication is usually dominant, there is little aerial scattering, and the multipath effect is weak, so the role of CP is weakened, and CP can be considered for other uses. Therefore, the present application provides the above method of using CP for beam tracking to improve the spectral efficiency of data transmission in scenarios with small ISI.

[0140] Optionally, the signal sender can also send a second signal to the signal receiver on the second time domain resource within the first time unit. Correspondingly, the signal receiver can receive the second signal on the second time domain resource. The second signal corresponds to a second spatial domain parameter, and the first spatial domain parameter is different from the second spatial domain parameter. The second spatial domain parameter can be used to determine a third spatial domain parameter. In other words, the signal receiver can determine the third spatial domain parameter based on the first signal and the second signal.

[0141] In the above process, the signal receiver can determine the third spatial domain parameter based on signals with different spatial domain parameters received on different time domain resources within the first time unit. The first time domain resource is the time domain resource for transmitting CP, that is, CP can participate in determining the third spatial domain parameter. This can reduce the transmission of reference signals for determining spatial domain parameters (for example, reference signals for beam tracking), improve the spectral efficiency of data transmission, and thus improve the capacity of the communication system.

[0142] It can be understood that the "reference signal for beam tracking" here may not carry user payloads and can be used to transmit framing, training, or detection signals, etc. The "reference signal for beam tracking" is, for example, a demodulation reference signal (DMRS) or a channel state information reference signal (CSI-RS), etc. Among them, the demodulation reference signal can be used for downlink data demodulation. The channel state information reference signal can be used for channel measurement, beam management, and time-frequency synchronization, etc.

[0143] It can be understood that the method provided in this application can be used in various communication systems. For example, the communication system can be a universal mobile telecommunications system (UMTS), a long term evolution (LTE) system, a 5th generation (5G) communication system, a wireless fidelity (WiFi) system, a communication system related to the 3rd generation partnership project (3GPP), a future evolved communication system (such as a 6th generation (6G) communication system, etc.), or a system integrating multiple systems, without limitation. Among them, 5G can also be referred to as new radio (NR). The following takes Figure 1 the communication system 10 shown as an example to describe the method provided in this application. Figure 1 It is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided in this application.

[0144] As Figure 1 shown, it is a schematic diagram of the architecture of the communication system 10 provided in this application. Figure 1 In it, the communication system 10 may include one or more RAN nodes 101 (only 1 is shown) and terminals 102 - 104 that can communicate with the RAN node 101.

[0145] In Figure 1 it, the RAN node can provide wireless access services for the terminal. Specifically, each RAN node corresponds to a service coverage area. Terminals entering this area can communicate with the RAN node through the air interface to receive the wireless access services provided by the RAN node. Optionally, the service coverage area may include one or more cells. The terminal and the RAN node can communicate through an air interface link. Among them, the air interface link can be divided into an uplink (UL) and a downlink (DL) according to the direction of the data transmitted thereon. Uplink data sent from the terminal to the RAN node can be transmitted on the UL, and downlink data transmitted from the RAN node to the terminal can be transmitted on the DL. For example: Figure 1 in it, the terminal 103 is located in the coverage area of the RAN node 101. The RAN node 101 can send downlink data to the terminal 103 through the DL, and the terminal 103 can send uplink data to the RAN node 101 through the UL.

[0146] The RAN node in this application, for example, RAN node 101 can be a device with wireless transceiver functions, which can help a terminal achieve wireless access. For example, it can be a node in the RAN, and can also be called an access network device or a network device, etc. The RAN node includes but is not limited to: the evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the evolved base station in the next-generation LTE (next generation eNB, ng-eNB), the base station in NR (gNodeB or gNB), the transmitting point (TP) or the transmission receiving point (TRP), the base station evolved by 3GPP in the future, the next-generation base station (next generation NodeB, gNB), the next-generation base station in the 6th generation (6G) mobile communication system, the base station in the future mobile communication system, satellites, access nodes in the WiFi system, wireless relay nodes, wireless backhaul nodes, integrated access and backhaul (IAB) nodes, network devices in the mobile switching center non-terrestrial network (NTN) communication system, that is, they can be deployed on high-altitude platforms or satellites, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support the networks of the same technology mentioned above, or can also support the networks of different technologies mentioned above. The base station can include one or more co-site or non-co-site TRPs. The RAN node can also be a device that serves as a base station in D2D communication, vehicle-to-everything communication, drone communication, and machine communication. The RAN node can also be a wireless controller in the cloud radio access network (CRAN) scenario. The RAN node can also be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), a radio unit (RU), a roadside unit (RSU) with base station functions, a wired access gateway, or a core network element, etc. The RAN node can also be a server, a wearable device, a machine communication device, or a vehicle-mounted device, etc. For example, the access network device in V2X technology can be an RSU. The following takes the RAN node as a base station as an example for illustration.The multiple RAN nodes may be base stations of the same type or different types. The base station may communicate with the terminal or communicate with the terminal through a relay station. The terminal may communicate with multiple base stations of different technologies. For example, the terminal may communicate with a base station supporting the LTE network, or may communicate with a base station supporting the 5G network, and may also support dual connection with the base stations of the LTE network and the 5G network.

[0147] In this application, the CU and the DU may be separately provided or may also be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio device or a radio frequency unit, such as included in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It can be understood that the CU may be classified as a network device in the access network or the CU may be classified as a network device in the core network, which is not limited herein.

[0148] In different systems, the CU (or CU-CP and CU-UP), the DU, or the RU may also have different names, but those skilled in the art can understand their meanings. For example, in an open radio access network (ORAN) system, the CU may also be referred to as an O-CU (open CU), the DU may also be referred to as an O-DU, the CU-CP may also be referred to as an O-CU-CP, the CU-UP may also be referred to as an O-CU-UP, and the RU may also be referred to as an O-RU. For ease of description, the CU, CU-CP, CU-UP, DU, and RU are used as examples in this application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0149] The terminals in this application, such as: terminal 102, terminal 103 or terminal 104 are devices with wireless transceiver functions. The terminals can be deployed on land, including indoor, outdoor, handheld or vehicle-mounted; they can also be deployed on water (such as ships, etc.); they can also be deployed in the air (such as airplanes, balloons, satellites, etc.). The terminal can also be called a terminal device. The terminal device can be a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., or a device used to provide voice or data connectivity to users. Among them, the UE includes handheld devices with wireless communication functions, vehicle-mounted devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rails, etc.), wearable devices (such as smart watches, smart bracelets, pedometers, etc.) or computing devices. Exemplarily, the UE can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a mobile internet device (MID), a satellite terminal or a computer with wireless transceiver functions. The UE can also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless modem, a smart point of sale (POS) machine, a customer-premises equipment (CPE), a smart robot, a robotic arm, a workshop device, a smart home device (such as a refrigerator, a TV, an air conditioner, an electric meter, etc.), a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, a vehicle-mounted terminal, a roadside unit (RSU) with terminal functions, or a flying device (such as a smart robot, a hot air balloon, a drone, an airplane), etc. The terminal can also be other devices with terminal functions. For example, the terminal can also be a device that serves as a terminal function in device-to-device (D2D) communication.

[0150] By way of example and not limitation, in the present application, the terminal may be a wearable device. A wearable device, also known as a wearable intelligent device, is a general term for devices developed by applying wearable technology to the intelligent design of daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is either directly worn on the body or integrated into the user's clothing or accessories. For example, a wearable device is not only a hardware device but also a device that realizes powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable intelligent devices include devices with complete functions and large sizes that can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to cooperate with other devices such as smart phones, such as various smart bracelets and smart jewelry for physical sign monitoring.

[0151] In the present application, the terminal may be a terminal in an Internet of Things (IoT) system. The IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-object interconnection. The terminal in the present application may be a terminal in machine type communication (MTC). The terminal of the present application may be an in-vehicle module, in-vehicle module group, in-vehicle component, in-vehicle chip, or in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in in-vehicle module, in-vehicle module group, in-vehicle component, in-vehicle chip, or in-vehicle unit. The terminal of the present application may be a vehicle, such as a car. Therefore, the present application can be applied to vehicle networking, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V), etc.

[0152] It can be understood that in some scenarios, the roles of the RAN node and the terminal are relative. For example, a helicopter or a drone that is usually configured as a terminal can also be configured as a mobile base station, and the device that accesses the RAN through the helicopter or the drone is configured as a terminal.

[0153] In the present application, the form of the RAN node is not limited. The device for realizing the function of the RAN node may be the RAN node; it may also be a device that can support the RAN node to realize this function, such as a chip system. This device can be installed in the RAN node or used in combination with the RAN node.

[0154] Figure 1The illustrated communication system 10 is for illustrative purposes only and does not limit the technical solutions of this application. Those skilled in the art should understand that in the specific implementation process, the communication system 10 may also include other devices, and the number of RAN nodes and terminals can also be determined according to specific needs without limitation.

[0155] Optionally, each network element or device (such as an RAN node or a terminal, etc.) in this application Figure 1 may also be referred to as a communication device, which may be a general-purpose device or a dedicated device, and this application does not make specific limitations in this regard.

[0156] Optionally, the related functions of each network element or device (such as an RAN node or a terminal, etc.) in this application Figure 1 may be implemented by one device, or jointly implemented by multiple devices, or may be implemented by one or more functional modules within a device. This application does not make specific limitations in this regard. It can be understood that the above functions can be either network elements in hardware devices, software functions running on dedicated hardware, or a combination of hardware and software, or virtualized functions instantiated on a platform (such as a cloud platform).

[0157] In the specific implementation, each network element or device (such as an RAN node or a terminal, etc.) in this application Figure 1 can all adopt Figure 2 the shown composition structure, or include Figure 2 the shown components. Figure 2 Shown is a schematic diagram of the hardware structure of a communication device applicable to this application. The communication device 20 includes at least one processor 201 and at least one communication interface 204, which are used to implement the method provided by this application. The communication device 20 may also include a communication line 202 and a memory 203.

[0158] The processor 201 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of this application solution.

[0159] The communication line 202 may include a path for transmitting information between the above components, such as a bus.

[0160] A communication interface 204 for communicating with other devices or communication networks. The communication interface 204 can be any device such as a transceiver, for example, it can be an Ethernet interface, a radio access network (RAN) interface, a wireless local area networks (WLAN) interface, a transceiver, a pin, a bus, an interface circuit, or a transceiver circuit, etc.

[0161] The memory 203 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or it can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), a magnetic disk storage medium, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but not limited to this. The memory can exist independently and be coupled to the processor 201 through the communication line 202. The memory 203 can also be integrated with the processor 201. The memory provided in this application generally has non-volatility.

[0162] Among them, the memory 203 is used to store the computer execution instructions involved in implementing the solution provided in this application, and is controlled by the processor 201 to execute. The processor 201 is used to execute the computer execution instructions stored in the memory 203, so as to implement the method provided in this application. Or, optionally, in this application, it can also be that the processor 201 executes the functions related to the processing in the method provided below in this application, and the communication interface 204 is responsible for communicating with other devices or communication networks. This application does not make specific limitations on this.

[0163] Optionally, the computer execution instructions in this application can also be referred to as application code. This application does not make specific limitations on this.

[0164] The coupling in this application is an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information interaction between devices, units, or modules.

[0165] As an embodiment, the processor 201 can include one or more CPUs, for exampleFigure 2 CPU0 and CPU1 therein.

[0166] As an embodiment, the communication device 20 may include multiple processors, such as Figure 2 the processor 201 and the processor 207 therein. Each of these processors may be a single-CPU processor or a multi-CPU processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).

[0167] As an embodiment, the communication device 20 may further include an output device 205 and / or an input device 206. The output device 205 is coupled to the processor 201 and can display information in various ways. For example, the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector, etc. The input device 206 is coupled to the processor 201 and can receive user input in various ways. For example, the input device 206 may be a mouse, a keyboard, a touch screen device, or a sensing device, etc.

[0168] It can be understood that Figure 2 the component structure shown therein does not constitute a limitation on the communication device. Except for Figure 2 the components shown, the communication device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0169] Next, the method provided in the present application will be described in conjunction with the accompanying drawings. Each network element in the following embodiments may have Figure 2 the components shown, which will not be elaborated.

[0170] It can be understood that the message names between the network elements or the names of the parameters in the messages in the following embodiments of the present application are only examples, and in specific implementations, they may also be other names. The present application does not make specific limitations on this.

[0171] It can be understood that in this application, "sending a first signal to... (such as a terminal)" can be understood as the destination of the information being the terminal. It may include directly or indirectly sending information to the terminal. "Receiving a first signal from... (such as a RAN node)" can be understood as the source of the information being the RAN node, and it may include directly or indirectly receiving information from the terminal. Necessary processing may be performed on the information between the source and the destination of the information transmission, such as format conversion, etc., but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be elaborated here.

[0172] It can be understood that in this application, " / " can indicate that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; "and / or" can be used to describe three relationships for associated objects. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be singular or plural. In addition, expressions similar to "at least one of A, B, and C" or "at least one of A, B, or C" are generally used to represent any one of the following: A exists alone; B exists alone; C exists alone; A and B exist simultaneously; A and C exist simultaneously; B and C exist simultaneously; A, B, and C exist simultaneously. The above takes three elements A, B, and C as an example to illustrate the selectable items of this item. When there are more elements in the expression, the meaning of the expression can be obtained according to the foregoing rules.

[0173] It can be understood that in this application, "transmission" can be understood as sending and / or receiving according to the specific context. "Transmission" can be a noun or a verb. When not emphasizing the execution subject of the action, "transmission" is often used instead of sending and / or receiving. For example, for the phrase "transmitting a first signal", from the perspective of the signal sender, it can be understood as "sending a first signal", and from the perspective of the signal receiver, it can be understood as "receiving a first signal". Other similar descriptions can refer to the explanations here and will not be pointed out one by one.

[0174] To facilitate the description of the technical solutions of this application, in this application, words such as "first" and "second" can be used to distinguish technical features with the same or similar functions. These words such as "first" and "second" do not limit the quantity and execution order, and these words such as "first" and "second" do not necessarily limit them to be different. In this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" should not be interpreted as being more preferred or having more advantages than other embodiments or design solutions. Using words such as "exemplary" or "for example" aims to present relevant concepts in a specific way for easy understanding.

[0175] It can be understood that the "embodiments" mentioned throughout the specification mean that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, the various embodiments mentioned throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It can be understood that in various embodiments of the present application, the magnitude of the serial numbers of the various processes does not mean the order of execution, and the order of execution of the various processes should be determined by their functions and internal logics, and should not constitute any limitation to the implementation process of the present application.

[0176] It can be understood that in the present application, "for indicating" can include direct indication and indirect indication, and can also include explicit indication and implicit indication. When it is described that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and does not mean that A must be carried in the indication information. If the information indicated by a certain information (such as the first indication information described below) is called the information to be indicated, then in the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated, etc. It is also possible to indirectly indicate the information to be indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to only indicate a part of the information to be indicated, while the other parts of the information to be indicated are known or pre-agreed. For example, it is also possible to realize the indication of specific information by means of the arrangement order of each information pre-agreed (such as protocol regulations), so as to reduce the indication overhead to a certain extent.

[0177] It can be understood that in the present application, "when...", "in the case of...", "if" and "if" all mean that corresponding processing will be performed under a certain objective situation, which is not a limitation of time, and it is not required that there must be a judgment action during implementation, nor does it mean that there are other limitations.

[0178] The "simultaneously" in the present application can be understood as at the same time point, can also be understood as within a period of time, and can also be understood as within the same cycle.

[0179] In the present application, "a plurality of" can be understood as two or more. For example, a plurality of beams can be understood as two or more beams.

[0180] In the present application, "greater than or equal to" can be replaced by "greater than", or replaced by "equal to"; "less than or equal to" can be replaced by "less than", or replaced by "equal to". For example, A is greater than or equal to B can be replaced by A is greater than B, or replaced by A is equal to B; A is less than or equal to B can be replaced by A is less than B, or replaced by A is equal to B.

[0181] It can be understood that some optional features in this application can, in some scenarios, be implemented independently without relying on other features, such as the current solution they are based on, to solve corresponding technical problems and achieve corresponding effects. In some scenarios, they can also be combined with other features according to requirements. Correspondingly, the devices provided in this application can also implement these features or functions accordingly, which will not be elaborated here.

[0182] It can be understood that the same step or steps or technical features with the same function in this application can be mutually referenced and learned between different embodiments.

[0183] The following takes the RAN node as the signal sender and the terminal as the signal receiver as an example to introduce the method provided in this application. It should be understood that when the terminal is the signal sender and the RAN node is the signal receiver, the interaction process between the RAN node and the terminal is similar to the interaction process between the RAN node as the signal sender and the terminal as the signal receiver. Therefore, the following Figure 3 or Figure 4 The method shown can be referred to and will not be elaborated further.

[0184] It can be understood that in this application, the RAN node and / or the terminal can execute some or all of the steps in this application. These steps are only examples, and this application can also execute other steps or various deformations of the steps. In addition, each step can be executed in a different order presented in this application, and it is possible not to execute all the steps in this application.

[0185] It can be understood that in the method provided below in this application, the RAN node and the terminal are taken as the execution entities of this interaction schematic as an example to illustrate the method, but this application does not limit the execution entities of this interaction schematic. For example, the RAN node in the method provided in the following embodiments of this application can also be a chip, a chip system, or a processor that supports the RAN node to implement this method, and can also be a logical node, a logical module, or software that can implement all or part of the functions of the RAN node; the terminal in the method provided below in this application can also be a chip, a chip system, or a processor that supports the terminal to implement this method, and can also be a logical node, a logical module, or software that can implement all or part of the functions of the terminal.

[0186] As Figure 3 shown, a communication method provided in this application may include the following steps:

[0187] S301: The RAN node sends a first signal to the terminal on a first time-domain resource within a first time unit. Correspondingly, the terminal receives the first signal from the RAN node on the first time-domain resource within the first time unit.

[0188] In this application, the RAN node may be Figure 1 the RAN node 101 in the communication system 10 shown in Figure 1 and the terminal may be any one of the terminals in the communication system 10 shown in, such as terminal 102, terminal 103, or terminal 104.

[0189] In this application, any time unit, such as the first time unit above or the second time unit in the following embodiments, is a segment of resources in the time domain. For example, the time unit is a symbol, such as an orthogonal frequency division multiplexing (OFDM) symbol, or an orthogonal time frequency space (OTFS) symbol, etc.

[0190] In this application, the first time domain resource is the time domain resource within the first time unit. For example, the first time unit includes a third time domain resource. The first time domain resource is part or all of the time domain resources of the third time domain resource. Among them, the third time domain resource is used to carry the CP, or in other words, the third time domain resource is all the time domain resources within the first time unit used to carry the CP.

[0191] In a possible design, the length of the time domain resource (such as the length of the first time domain resource or the length of the second time domain resource below, etc.) is related to the sampling interval of the sampling points of the OFDM symbol. Sampling the OFDM symbol facilitates the signal receiving end (such as the terminal) to extract waveform parameters from the received OFDM waveform. Specifically, for each received OFDM waveform, by sampling multiple times in the time domain, the level values at multiple sampled time points corresponding to the OFDM waveform are obtained, and the number of sampled level values can ensure that the terminal can recover the OFDM waveform. Usually, the sampling interval T c and the sampling frequency Δf max are related and can satisfy formula (1):

[0192]

[0193] where Δf max may take values: Δf max = 480·10 3 , N f may take values N f = 4096. Substituting the values of these two parameters into formula (1), the value of T c may be approximately 5.09×10 -10 s, that is, the interval between two adjacent sampling points can be 5.09×10 -10s, and then the length of the time-domain resource can be determined according to this interval. It should be understood that in different scenarios or different communication systems, the calculation method of T c may be different, and the value may also be different, which is not limited in this application.

[0194] In a possible design, the RAN node sends a first signal on a first time-domain resource using a first transmission beam, and the terminal receives the first signal on the first time-domain resource using a first reception beam.

[0195] In this application, the first signal may be a cyclic prefix.

[0196] S302: The terminal determines a third spatial domain parameter according to the first signal.

[0197] In this application, the first signal corresponds to a first spatial domain parameter, and the first signal can be used to determine the third spatial domain parameter. In this application, the first signal corresponds to the first spatial domain parameter, which can be understood as the spatial domain parameter of the first signal being the first spatial domain parameter, or the spatial domain parameter of the first signal including the first spatial domain parameter, or the spatial domain parameter of the terminal receiving the first signal being the first spatial domain parameter (i.e., the first spatial domain parameter is the spatial domain reception parameter of the terminal), or the spatial domain parameter of the RAN node sending the first signal being the first spatial domain parameter (i.e., the first spatial domain parameter is the spatial domain transmission parameter of the RAN node). It should be understood that the relevant understanding of the following similar descriptions such as the signal corresponding to the spatial domain parameter is the same as here, and will not be elaborated later.

[0198] In a possible design, the first spatial domain parameter and the third spatial domain parameter are the spatial domain reception parameters of the terminal, or the first spatial domain parameter and the third spatial domain parameter are the spatial domain transmission parameters of the RAN node.

[0199] Exemplarily, the first spatial domain parameter is the angle of the first reception beam of the terminal, such as the central angle of the first reception beam, and the third spatial domain parameter is the angle of the third reception beam of the terminal, such as the central angle of the third reception beam. In other words, the terminal can determine the third reception beam according to the first signal, so that the terminal can receive signals according to the third reception beam.

[0200] Exemplarily, the first spatial domain parameter is the angle of the first transmission beam of the RAN node, such as the central angle of the first transmission beam, and the third spatial domain parameter is the angle of the third transmission beam of the RAN node, such as the central angle of the third transmission beam. In other words, the terminal can determine the third transmission beam according to the first signal, and then notify the RAN node, so that the RAN node can send signals according to the third transmission beam.

[0201] Optionally, the RAN node may send the sixth signal to the terminal on the ninth time domain resource within a time unit after or before the first time unit (such as the third time unit). Correspondingly, the terminal receives the sixth signal from the RAN node on the ninth time domain resource. Among them, the ninth time domain resource is part or all of the time domain resource used to carry the CP within the third time unit. It can be understood that the implementation manner of the ninth time domain resource is similar to that of the first time domain resource and will not be elaborated here.

[0202] In a possible implementation manner, the terminal determines the third spatial domain parameter according to the first signal, including: the terminal determines the third spatial domain parameter according to the first signal and the sixth signal. The first signal corresponds to the first spatial domain parameter, the sixth signal corresponds to the sixth spatial domain parameter, and the first spatial domain parameter and the sixth spatial domain parameter are different. Among them, the first spatial domain parameter and the sixth spatial domain parameter may be the transmission spatial domain parameters of the RAN node, or the first spatial domain parameter and the sixth spatial domain parameter may be the reception spatial domain parameters of the terminal.

[0203] Exemplarily, the first spatial domain parameter and the sixth spatial domain parameter are the transmission spatial domain parameters of the RAN node. For example, the first spatial domain parameter and the sixth spatial domain parameter may be the indexes of the transmission beams of the RAN node. The terminal may determine the third spatial domain parameter as the first spatial domain parameter or the sixth spatial domain parameter according to the signal reception power of the first signal and the signal reception power of the sixth signal (such as the spatial domain parameter of the signal with a larger signal reception power is the third spatial domain parameter).

[0204] Exemplarily, the first spatial domain parameter and the sixth spatial domain parameter are the transmission spatial domain parameters of the RAN node. For example, the first spatial domain parameter and the sixth spatial domain parameter may be the central angles of the transmission beams of the RAN node. The terminal may determine the third spatial domain parameter as the central angle of the transmission beam of the RAN node according to the first signal and the sixth signal. Among them, the manner in which the terminal determines the third spatial domain parameter according to the first signal and the sixth signal is similar to the manner in which the terminal determines the third spatial domain parameter according to the first signal and the second signal. Specifically, reference may be made to the method for determining the third spatial domain parameter in S302a.

[0205] Exemplarily, the first spatial domain parameter and the sixth spatial domain parameter are the reception spatial domain parameters of the terminal. For example, the first spatial domain parameter and the sixth spatial domain parameter may be the indexes of the reception beams of the terminal. The terminal may determine the third spatial domain parameter as the first spatial domain parameter or the sixth spatial domain parameter according to the signal reception power of the first signal and the signal reception power of the sixth signal (such as the spatial domain parameter of the signal with a larger signal reception power is the third spatial domain parameter).

[0206] Exemplarily, the first spatial domain parameter and the sixth spatial domain parameter are the receiving spatial domain parameters of the terminal. For example, the first spatial domain parameter and the sixth spatial domain parameter can be the central angles of the receiving beams of the terminal. The terminal can determine that the third spatial domain parameter is the central angle of the receiving beam of the terminal based on the first signal and the sixth signal. In this application, the angle of any beam (such as the angle of the first receiving beam) can be represented by the angle in the horizontal direction of the beam and the angle in the vertical direction of the beam. Of course, the angle of the beam can also be represented in other ways, which is not limited.

[0207] Based on Figure 3 the method shown above, the RAN node can send the first signal through part or all of the time domain resources (such as the first time domain resource) used to carry the CP, so that the terminal can determine the third spatial domain parameter based on the first signal. That is to say, this method can expand the use of the CP and use the CP to determine the third spatial domain parameter. In this way, the reference signals carried by the time domain resources for data transmission can be reduced, the spectral efficiency of data transmission can be improved, and thus the capacity of the communication system can be improved.

[0208] Optionally, in Figure 3 a possible implementation manner of the method shown above, the RAN node can also send a second signal to the terminal on the second time domain resource within the first time unit, so that the terminal can determine the third spatial domain parameter according to the first signal and the second signal. Specifically, as Figure 4 shown in Figure 3 the method shown above further includes the following steps:

[0209] S301a: The RAN node sends a second signal to the terminal on the second time domain resource within the first time unit. Correspondingly, the terminal receives the second signal from the RAN node on the second time domain resource within the first time unit.

[0210] It can be understood that in addition to the third time domain resource, the first time unit may also include a second time domain resource.

[0211] In this application, the second signal can be a data signal and / or a reference signal. Exemplarily, when the second signal is a downlink data signal, it can be a data signal such as a physical downlink shared channel (PDSCH). Or, when the second signal is a reference signal, it can be a reference signal such as a downlink demodulation reference signal. It should be understood that the second signal is not the CP, or the second time domain resource is not the time domain resource used to carry the CP.

[0212] In this application, the second signal corresponds to the second spatial domain parameter. Exemplarily, taking the RAN node as an example to send the second signal on the second time domain resource and the terminal as an example to receive the second signal on the second time domain resource with the second receiving beam, the second spatial domain parameter may be the angle of the second receiving beam of the terminal, such as the central angle of the second receiving beam.

[0213] Exemplarily, taking the RAN node as an example to send the second signal with the second transmitting beam on the second time domain resource and the terminal as an example to receive the second signal on the second time domain resource, the second spatial domain parameter may be the angle of the second transmitting beam of the RAN node, such as the central angle of the second transmitting beam.

[0214] In this application, the first spatial domain parameter is different from the second spatial domain parameter. Among them, the second spatial domain parameter may be the spatial domain receiving parameter of the terminal, or the second spatial domain parameter may be the spatial domain transmitting parameter of the RAN node. Exemplarily, taking the first spatial domain parameter and the second spatial domain parameter as the spatial domain receiving parameters of the terminal as an example, for example, the first spatial domain parameter is the angle of the first receiving beam of the terminal, the second spatial domain parameter is the angle of the second receiving beam of the terminal, and the angle of the first receiving beam is different from the angle of the second receiving beam. Exemplarily, taking the first spatial domain parameter and the second spatial domain parameter as the spatial domain transmitting parameters of the RAN node as an example, for example, the first spatial domain parameter is the angle of the first transmitting beam of the RAN node, the second spatial domain parameter is the angle of the second transmitting beam of the RAN node, and the angle of the first transmitting beam is different from the angle of the second transmitting beam.

[0215] In a possible design, the first time domain resource is all the time domain resources of the third time domain resource. The first time domain resource is used to carry a cyclic prefix, and the cyclic prefix may be obtained from the signal at the tail of the second time domain resource.

[0216] As Figure 5A shown, it is a schematic diagram of the time domain distribution of the first signal and the second signal. In Figure 5A , the RAN node may send the first signal to the terminal on the time domain resource 501 (i.e., the first time domain resource), and send the second signal to the terminal on the time domain resource 502 (i.e., the second time domain resource). The terminal receives the first signal on the time domain resource 501 and receives the second signal on the time domain resource 502. Among them, the time domain resource 501 and the time domain resource 502 are continuous in the time domain, and the time domain resource 502 is after the time domain resource 501. Among them, the second signal includes 10 signal sampling points, and the RAN node may use the last 3 signal sampling points among these 10 signal sampling points as the first signal. In addition, the time domain resource 501 may correspond to the first spatial domain parameter, and the time domain resource 502 may correspond to the second spatial domain parameter.

[0217] In another possible design, the first time-domain resource is a partial time-domain resource of the third time-domain resource, and the third time-domain resource includes the first time-domain resource and the fourth time-domain resource. In the time domain, the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource, and is continuous with the first time-domain resource.

[0218] Optionally, the fourth time-domain resource is also continuous with the second time-domain resource.

[0219] Optionally, the signal (such as the eighth signal) transmitted by the fourth time-domain resource can correspond to the second spatial domain parameter. For example, the eighth signal and the second signal use the same transmission beam, such as both being transmitted using the second transmission beam. It can be understood that when the eighth signal and the second signal are both transmitted using the second transmission beam, the inter-symbol interference caused by factors such as multipath effects to the second signal can be eliminated. Another example is that the signal (such as the eighth signal) transmitted by the fourth time-domain resource and the second signal use the same reception beam, such as both being received using the second reception beam.

[0220] Optionally, the eighth signal can be a CP.

[0221] Such as Figure 5B shown, it is a schematic diagram of the time-domain distribution of the first signal and the second signal in another case. In Figure 5B , the RAN node can send the first signal to the terminal on the time-domain resource 503 (i.e., the first time-domain resource), send the eighth signal to the terminal on the time-domain resource 505 (i.e., the fourth time-domain resource), and send the second signal to the terminal on the time-domain resource 504 (i.e., the second time-domain resource). The terminal receives the first signal on the time-domain resource 503, receives the eighth signal on the time-domain resource 505, and receives the second signal on the time-domain resource 504. Among them, the time-domain resource 503, the time-domain resource 505, and the time-domain resource 504 are continuous in the time domain, and the time-domain resource 505 is after the time-domain resource 503, and the time-domain resource 504 is after the time-domain resource 505. Among them, the second signal includes 10 signal sampling points, the first signal includes 2 signal sampling points, and the eighth signal includes 1 signal sampling point. The RAN node can use the last 3 signal sampling points in the second signal as the cyclic prefix. For example, the signals on the first two signal sampling points among the signals on these 3 signal sampling points can be used as the first signal, and the signal on the last signal sampling point among these three signal sampling points can be used as the eighth signal. In addition, the time-domain resource 503 can correspond to the first spatial domain parameter, and the time-domain resource 505 and the time-domain resource 504 can correspond to the second spatial domain parameter.

[0222] In another possible design, the first time-domain resource is a partial time-domain resource of the third time-domain resource. The third time-domain resource includes the first time-domain resource, the fourth time-domain resource, and the fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource. The fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource and is continuous with the first time-domain resource.

[0223] Optionally, the signal (such as the eighth signal) transmitted by the fourth time-domain resource may correspond to the second spatial domain parameter. For example, the eighth signal and the second signal use the same transmission beam, such as both being transmitted using the second transmission beam. It can be understood that when the eighth signal and the second signal are both transmitted using the second transmission beam, the inter-symbol interference caused by factors such as multipath effects to the second signal can be eliminated. Another example is that the signal (such as the eighth signal) transmitted by the fourth time-domain resource and the second signal use the same reception beam, such as both being received using the second reception beam.

[0224] Optionally, the signal (such as the ninth signal) transmitted by the fifth time-domain resource may correspond to the first spatial domain parameter. For example, the ninth signal may correspond to the same spatial domain parameter as the first signal, that is, the first spatial domain parameter. Of course, the ninth signal may correspond to other spatial domain parameters, which is not limited. It can be understood that when the ninth signal and other signals transmitting data (such as the second signal) are transmitted using the same beam, the ISI caused by the time units before the first time unit can be eliminated.

[0225] Optionally, the eighth signal and / or the ninth signal may be a CP.

[0226] Optionally, the fourth time-domain resource is also continuous with the second time-domain resource.

[0227] Such as Figure 5C shown, is a schematic diagram of the time-domain distribution of the first signal and the second signal. In Figure 5CAmong them, the RAN node may send the ninth signal to the terminal on the time-domain resource 507 (i.e., the fifth time-domain resource), send the first signal to the terminal on the time-domain resource 508 (i.e., the first time-domain resource), send the eighth signal to the terminal on the time-domain resource 509 (i.e., the fourth time-domain resource), and send the second signal to the terminal on the time-domain resource 506 (i.e., the second time-domain resource). The terminal receives the ninth signal on the time-domain resource 507 (i.e., the fifth time-domain resource), receives the first signal on the time-domain resource 508 (i.e., the first time-domain resource), receives the eighth signal on the time-domain resource 509 (i.e., the fourth time-domain resource), and receives the second signal on the time-domain resource 506. Among them, the time-domain resources 507, 508, 509, and 506 are continuous in the time domain, and the time-domain resource 507 is after the time-domain resource 508, the time-domain resource 509 is after the time-domain resource 508, and the time-domain resource 506 is after the time-domain resource 509. Among them, the second signal includes 10 signal sampling points. The RAN node may use the last 3 signal sampling points among these 10 signal sampling points as the cyclic prefix. For example, the first signal sampling point among these 3 signal sampling points may be used as the ninth signal, the second signal sampling point may be used as the first signal, and the third signal sampling point may be used as the eighth signal. In addition, the ninth signal and the first signal may correspond to the first spatial domain parameter, and the tenth signal and the second signal may correspond to the second spatial domain parameter. It should be understood that the ninth signal may also correspond to other spatial domain parameters, and no limitation is made thereto.

[0228] It can be understood that after S301a, the terminal may determine the third spatial domain parameter according to the first signal and the second signal. That is to say, Figure 3 S302 in the method shown may be replaced with the following steps:

[0229] S302a: The terminal determines the third spatial domain parameter according to the first signal and the second signal.

[0230] In this application, the third spatial domain parameter may be the beam center angle of the target beam, and the target beam is used for data transmission.

[0231] A possible design. If the first airspace parameter, the second airspace parameter, and the third airspace parameter are the airspace reception parameters of the terminal, the first airspace parameter may be the beam center angle of the first reception beam, the second airspace parameter may be the beam center angle of the second reception beam, and the third airspace parameter may be the beam center angle of the third reception beam. At this time, the target beam is the third reception beam. Among them, the third reception beam can be used for the terminal to receive signals. If the first airspace parameter, the second airspace parameter, and the third airspace parameter are the airspace transmission parameters of the RAN node, the first airspace parameter may be the beam center angle of the first transmission beam, the second airspace parameter may be the beam center angle of the second transmission beam, and the third airspace parameter may be the beam center angle of the third transmission beam. At this time, the target beam is the third transmission beam. Among them, the third transmission beam can be used for the RAN node to transmit signals.

[0232] A possible design. The terminal can determine the offset of the third airspace parameter relative to the first airspace parameter or the second airspace parameter according to the first signal and the second signal. It should be understood that by determining the offset of the third airspace parameter relative to the first airspace parameter or the second airspace parameter, the terminal can determine the third airspace parameter. The following takes the offset of the beam center angle of the third reception beam relative to the beam center angle of the first reception beam as an example for specific elaboration.

[0233] Exemplarily, as Figure 5D shown, taking η as an example of the offset of the beam center angle of the third reception beam relative to the beam center angle of the first reception beam, η can be expressed as a multiple of θ, where θ is the deviation amount between the beam center angle of the first reception beam and the beam center angle of the second reception beam, that is, η = x·θ (x>0). The center angle of the third reception beam can be calculated by using the sum and difference formula method. For example, the relationship between η and the beam center angle of the first reception beam can satisfy formula (2).

[0234]

[0235] Among them, δ is the difference between the beam center angle of the second reception beam and the beam center angle of the first reception beam, a is the reception power of the first reception beam for receiving the first signal, and b is the reception power corresponding to the second reception beam receiving the second signal. For example, the reception power corresponding to the second reception beam receiving the second signal is the reception power of a part of the second beam receiving the second signal, that is, the reception power of the part of the second beam receiving the second signal that is selected as the first signal. For example, the reception power of the signals at the last three signal sampling points in 502 of the second beam, or the reception power of the signals at the second-to-last and third signal sampling points in 504 of the second beam. Figure 5A Figure 5B

[0236] It can be understood that the relationship between the offset of the beam center angle of the third receiving beam relative to the beam center angle of the second receiving beam and the beam center angle of the second receiving beam is similar to formula (2). For example, η in formula (2) can be replaced by the relative offset of the center angle of the third receiving beam relative to the beam center angle of the second receiving beam, and can be replaced by the beam center angle of the second receiving beam.

[0237] Optionally, the terminal can indicate to the RAN node whether the third spatial domain parameter is calculated relative to the beam center angle of the first receiving beam or the beam center angle of the second receiving beam.

[0238] It can be understood that the terminal can use the beam for receiving the first signal (i.e., the first receiving beam) and the beam for receiving the second signal (i.e., the second receiving beam) to determine a suitable receiving beam, such as the third receiving beam. Therefore, without the need to transmit an additional reference signal for beam tracking, the receiving end can receive the signal on the suitable receiving beam. Consequently, the RAN node does not need to configure additional time domain resources for the terminal to transmit the reference signal for beam tracking, thereby reducing the time domain overhead of the reference signal for beam tracking. It can be understood that if the terminal cannot use the beam for receiving the first signal (i.e., the first receiving beam) and the beam for receiving the second signal (i.e., the second receiving beam) to determine a suitable receiving beam, the terminal needs to receive the reference signal for beam tracking on one or more additional symbols to determine a suitable receiving beam. In this embodiment, since the terminal can use the beam for receiving the first signal (i.e., the first receiving beam) and the beam for receiving the second signal (i.e., the second receiving beam) to determine a suitable receiving beam, the terminal can implement beam tracking using the cyclic prefix within the symbol without the need for one or more additional symbols to transmit the reference signal for beam tracking.

[0239] The above is the specific process for the terminal to determine the third receiving beam based on the first signal and the second signal. After the terminal determines the third receiving beam, it can receive data using the third receiving beam.

[0240] It can be understood that the terminal can also determine the third transmitting beam based on the first signal and the second signal. The process for the terminal to determine the third transmitting beam is similar to the process for the terminal to determine the third receiving beam. The difference is that the relationship between the offset of the beam center angle of the third transmitting beam relative to the beam center angle of the first transmitting beam and the beam center angle of the first transmitting beam is different from the relationship between the offset of the beam center angle of the third receiving beam relative to the beam center angle of the first receiving beam and the beam center angle of the first receiving beam. For example, η in formula (2) can be replaced by the offset of the beam center angle of the third transmitting beam relative to the beam center angle of the first transmitting beam, and The beam center angle of the first transmission beam can be replaced, the δ in formula (2) can be replaced by the difference between the beam center angles of the second transmission beam and the first transmission beam, and the θ in formula (2) can be replaced by the deviation amount between the beam center angles of the first transmission beam and the second transmission beam.

[0241] Similarly, the relationship between the offset of the beam center angle of the third transmission beam relative to the beam center angle of the second transmission beam and the beam center angle of the second transmission beam is different from the relationship between the offset of the beam center angle of the third reception beam relative to the beam center angle of the second reception beam and the beam center angle of the second reception beam. For example, the η in formula (2) can be replaced by the offset of the beam center angle of the third transmission beam relative to the beam center angle of the second transmission beam, and the The beam center angle of the second transmission beam can be replaced, the δ in formula (2) can be replaced by the difference between the beam center angles of the second transmission beam and the first transmission beam, and the θ in formula (2) can be replaced by the deviation amount between the beam center angles of the first transmission beam and the second transmission beam.

[0242] The above is the specific process for the terminal to determine the third transmission beam based on the first signal and the second signal. After the terminal determines the third transmission beam, it can indicate the third transmission beam to the RAN node so that the RAN node communicates with the terminal according to the third transmission beam. For example, the terminal can send the first indication information for indicating the third spatial domain parameter to the RAN node. This process will be introduced in S303 below and will not be elaborated here.

[0243] Optionally, the terminal can also report its own capabilities to the RAN node so that the RAN node can determine whether to use Figure 3 or Figure 4 the method shown to communicate with the terminal. For example, the terminal can send the first capability information to the RAN node to indicate whether the terminal has the capability to transmit different signals using different spatial domain parameters. For example, the first capability information can indicate whether the terminal supports receiving the first signal and the second signal respectively through different spatial domain parameters. In this way, after receiving the capability information of the terminal, the RAN node can determine whether to use Figure 3 or Figure 4 the method shown to communicate with the terminal.

[0244] For example, when the capability information of the terminal indicates that the terminal has the ability to transmit different signals using different spatial domain parameters, the terminal can receive the first signal and the second signal using different receiving beams respectively, and then determine a suitable receiving beam (such as the third receiving beam) from different receiving beams. When the terminal receives subsequent signals, it still uses the third receiving beam for reception; when the capability information of the terminal indicates that the terminal does not have the ability to transmit different signals using different spatial domain parameters, the terminal can use one receiving beam to receive the first signal and the second signal from the RAN node, and determine the angular offset between the appropriate transmission beam and the beam center of the first transmission beam or the second transmission beam corresponding to the first signal and the second signal, so that the RAN node can refer to this angular offset when determining the beam center angle of the third transmission beam.

[0245] Optionally, the RAN node can send second indication information to the terminal. Correspondingly, the terminal receives the second indication information from the RAN node. The second indication information can indicate whether the first transmission beam (i.e., the transmission beam of the first signal) and the second transmission beam (i.e., the transmission beam of the second signal) are the same. For example, when the first transmission beam and the second transmission beam are different, the second indication information indicates that they are different. When the second indication information indicates that the first transmission beam and the second transmission beam are different, the terminal determines the third spatial domain parameter according to the first signal and the second signal.

[0246] It can be understood that in the above process, after the RAN node sends the first signal on the first time domain resource and the second signal on the second time domain resource, the terminal can determine the third receiving beam according to the first receiving beam and the second receiving beam, which is convenient for the terminal to better receive the third signal from the RAN node. Alternatively, the terminal can also determine the third transmission beam according to the first transmission beam and the second transmission beam, so that the RAN node can send signals using the third transmission beam. In this way, the reference signal for beam tracking does not need to be transmitted, and there are more time domain resources for data transmission, which can improve the spectral efficiency of data transmission.

[0247] Optionally, in Figure 3 In a possible implementation of the method shown, in order to improve the signal-to-noise ratio of the signal received by the terminal and thus improve the accuracy of beam tracking, the RAN node can send the third signal to the terminal on the sixth time domain resource within the second time unit, and send the fourth signal to the terminal on the seventh time domain resource within the second time unit. Correspondingly, the terminal can receive the third signal on the sixth time domain resource within the second time unit and receive the fourth signal on the seventh time domain resource within the second time unit. The sixth time domain resource is used to transmit part or all of the cyclic prefix. The above third signal and fourth signal can be used to determine the third spatial domain parameter. The following is a specific elaboration.

[0248] In a possible design, the second time unit can be consecutive with the first time unit, or located within the same subframe, or there is no limitation on other positions. The seventh time-domain resource is after the sixth time-domain resource. The RAN node uses the fourth transmission beam to send a fourth signal to the terminal on the sixth time-domain resource of the second time unit, and uses the fifth transmission beam to send a fifth signal to the terminal on the seventh time-domain resource of the second time unit. It can be understood that in the time domain, the fourth signal is similar to the first signal. Specifically, reference can be made to the introduction of the first signal. The fifth signal is similar to the second signal. Specifically, reference can be made to the introduction of the second signal. The fifth signal is after the fourth signal.

[0249] Exemplarily, similar to Figure 3 or Figure 4 the method described above, the terminal can use a receiving beam to receive the fourth signal and the fifth signal to determine a suitable transmission beam for the RAN node. Specifically, in the first time unit and the second time unit, the first transmission beam corresponding to the first signal and the second transmission beam corresponding to the second signal can be different, the fourth transmission beam corresponding to the fourth signal and the fifth transmission beam corresponding to the fifth signal can be different, the first transmission beam and the fourth transmission beam can be the same, and the second transmission beam and the fifth transmission beam can be the same. That is: the RAN node sends the first signal and the fourth signal respectively through the first transmission beam, and sends the second signal and the fifth signal respectively through the second transmission beam. The terminal can accumulate the received powers corresponding to the first signal and the fourth signal to obtain the received power corresponding to the first transmission beam (i.e., the value of parameter a used in formula (2)). The terminal can accumulate the received powers of the second signal and the fifth signal to obtain the received power corresponding to the second transmission beam (i.e., the value of parameter b used in formula (2)), and then according to the values of a, b and the value of ξ can be calculated and substituted into formula (2) for calculation, and is equal to the relative offset of the beam center angle of the first transmission beam. According to formula (2), x·θ is obtained. The value of x·θ is the relative offset of the center angle of the third transmission beam with respect to the beam center angle of the first transmission beam. This relative offset is used to determine a suitable transmission beam for the RAN node. It should be understood that the above process can be similarly applied to more time units, and so on, without further elaboration.

[0250] Alternatively, when the fourth transmission beam is the same as the fifth transmission beam, the terminal receives the fourth signal on the sixth time-domain resource of the second time unit using the fourth reception beam, and receives the fifth signal on the seventh time-domain resource of the second time unit using the fifth reception beam, and then determines a suitable reception beam. Specifically, in the first time unit and the second time unit (more time units may also be included), the first reception beam corresponding to the first signal and the second reception beam corresponding to the second signal may be different, the fourth reception beam corresponding to the fourth signal and the fifth reception beam corresponding to the fifth signal may be different, the first reception beam and the fourth reception beam may be the same, and the second reception beam and the fifth reception beam may be the same. That is: the terminal receives the first signal and the fourth signal respectively through the first reception beam, and receives the second signal and the fifth signal respectively through the second reception beam. The terminal can accumulate the reception powers corresponding to the first signal and the fourth signal to obtain the reception power corresponding to the first reception beam (i.e., the value of parameter a used in formula (2)), and accumulate the reception powers of the second signal and the fifth signal to obtain the reception power corresponding to the second reception beam (i.e., the value of parameter b used in formula (2)), and then according to the values of a and b and calculate the value of ξ and substitute it into formula (2), and is equal to the relative offset of the beam center angle of the first reception beam. According to formula (2), the value of x·θ can be obtained. The value of x·θ is the relative offset of the center angle of the third reception beam with respect to the beam center angle of the first reception beam. This relative offset is used to determine a suitable reception beam for the terminal. It should be understood that the above process can be applied to more time units, and so on, which will not be elaborated here.

[0251] Optionally, the RAN node may indicate to the terminal which time units can adopt the communication method provided in this application. Taking the frame structure of 5G as an example, a subframe includes 14 OFDM symbols (one OFDM symbol may correspond to one time unit in this application, such as the first time unit), and the RAN node may indicate which OFDM symbols within a subframe can adopt the communication method provided in this application. For example, the RAN node may send the fourth indication information to the terminal. The fourth indication information includes 14 bits, each bit corresponding to one OFDM symbol in the subframe, and is used to indicate whether the OFDM symbol adopts the method provided in this application. After receiving the fourth indication information, the terminal may determine which OFDM symbols can adopt the method provided in this application according to the fourth indication information. For example, if the fourth indication information includes "10010000000000", it may indicate that the 1st symbol and the 4th symbol within a subframe can adopt the communication method provided in this application. It can be understood that the terminal may determine the third spatial domain parameter according to the signals within the 1st symbol and the 4th symbol respectively, or the terminal may accumulate the received powers of the signals within the 1st symbol and the 4th symbol to calculate the third spatial domain parameter, without limitation.

[0252] Optionally, the second time unit may be the same time unit as the aforementioned third time unit, or a different time unit, without limitation.

[0253] The above only takes two time units (such as the first time unit and the second time unit) as an example to introduce the process of determining the third spatial domain parameter. In specific applications, the terminal may also combine more time units to determine the third spatial domain parameter, which will not be elaborated here.

[0254] It can be understood that in the above process, in addition to combining the first signal and the second signal, the terminal may also combine the third signal and the fourth signal to determine the third spatial domain parameter for the signals corresponding to the same spatial domain parameter. It should be understood that when the terminal receives multiple signals on different time domain resources using the same receiving beam, such as receiving signals such as the first signal and the third signal using the first receiving beam, and receiving signals such as the second signal and the fourth signal using the second receiving beam, the received powers of the signals corresponding to the same spatial domain parameter will be accumulated, thereby improving the signal-to-noise ratio and further improving the accuracy of beam determination.

[0255] Optionally, the RAN node may also send the third indication information to the terminal, which is used to indicate the first time domain resource to the terminal. In this way, after receiving the third indication information, the terminal may determine the first time domain resource according to the third indication information and receive the first signal on the first time domain resource.

[0256] Exemplarily, the third indication information includes the start position and / or the time domain length of the first time domain resource. Taking the third indication information including the start position (such as L0) of the first time domain resource as an example, the range of the first time domain resource can be: starting from L0 and ending at the time domain position of (L0 + L), where the time domain length L (0 < L < N) is preset by the RAN node (such as indicated by x signal sampling points, etc.), and L can also be included in the third indication information. Taking the third indication information including the time domain length (such as L) of the third time domain resource as an example, the range of the third time domain resource can be: starting from L0 (L0 is preset, such as the start position of the time domain of the first time unit) and ending at the time domain position of (L0 + L).

[0257] Optionally, in Figure 3 a possible implementation manner of the method shown, the terminal indicates information related to the third spatial domain parameter to the RAN node, so that the RAN node can determine the third spatial domain parameter according to this information, and then communicate with the terminal through the third transmission beam. Specifically, it can be as Figure 4 shown, Figure 3 the method shown also includes the following steps:

[0258] S303: The terminal sends the first indication information to the RAN node. Correspondingly, the RAN node receives the first indication information from the terminal.

[0259] In this application, the first indication information is used to indicate the third spatial domain parameter. Optionally, the third spatial domain parameter is the central angle of the target beam. The target beam can be used to transmit data. The target beam can be used for the RAN node to send signals (for example, the target beam can be the third transmission beam).

[0260] Exemplarily, the first indication information can indicate the central angle of the third transmission beam. For example, the first indication information includes the offset of the central angle of the third transmission beam relative to the central angle of the first transmission beam or includes the offset of the central angle of the third transmission beam relative to the central angle of the second transmission beam, so that the RAN node can determine the third transmission beam according to this offset. Or the first indication information can also indicate the third receiving beam of the terminal.

[0261] In addition to the above method, the terminal can also quantize the offset and indicate the quantized value to the RAN node. For example, the first indication information includes the index corresponding to this offset.

[0262] In a possible implementation, when the terminal indicates the situation of the third transmission beam through the first indication information, the offset indicated by the first indication information can be quantified based on θ in the foregoing text (θ can represent the deviation between the beam center angle of the first transmission beam and the beam center angle of the second transmission beam). For example, the beam center angle offset η of the third transmission beam is η = x·θ, where x is the quantization value of η based on θ. Exemplarily, the terminal can determine the beam center angle offset η = x·θ of the third transmission beam according to formula (2) and indicate the value of x to the RAN node, so that the RAN node can know the value of η. Each relative offset x can be represented by an index in Table 1, and the value range of the index can be {0, 1, …, N - 1}, where N is an integer greater than or equal to 1. The corresponding relationship between the index and the relative offset is shown in Table 1.

[0263] Table 1

[0264] Index Indicated by the Terminal Relative Offset x 0 0 1 1 / N … … N-1 (N - 1) / N

[0265] For example, taking θ = 45° and N = 10 as an example, when the above offset is 22.5°, the terminal can indicate to the RAN node that the offset is 22.5°, or indicate the offset index to the RAN node.

[0266] Optionally, the RAN node sends a signal to the terminal through the third transmission beam. Correspondingly, the terminal receives the third signal from the RAN node through the third reception beam.

[0267] In a possible implementation, after comprehensive consideration based on factors such as its own computing power, available beam resources, or time-domain resources, the RAN node can determine the angle of the third transmission beam for finally sending the third signal according to the third transmission beam indicated by the terminal. It should be understood that the real environment is relatively complex and there are many factors for the RAN node to consider. The third transmission beam determined by the RAN node considering all factors may not be the third transmission beam indicated by the terminal, and this is not restricted.

[0268] It can be understood that the actions of the RAN node or the terminal in the above S301 - S303 can be executed by the processor 201 in the communication device 20 shown in Figure 2 calling the application program code stored in the memory 203, and the present application does not impose any restrictions on this.

[0269] As Figure 6 shown, another communication method provided by the present application may include the following steps:

[0270] S601: The terminal determines the first capability information.

[0271] Among them, the first capability information indicates whether it supports transmitting the first signal and the second signal respectively through different spatial domain parameters; wherein, the time domain resource of the first signal is the first time domain resource within the first time unit, the time domain resource of the second signal is the second time domain resource within the first time unit, the first time unit includes the second time domain resource and the third time domain resource, the first time domain resource is included within the third time domain resource, and the third time domain resource is used for transmitting the cyclic prefix. It can be understood that the introductions of the first capability information, the first signal, the second signal, the first time unit, the first time domain resource, the second time domain resource, and the third time domain resource can refer to Figure 3 or Figure 4 the corresponding descriptions in the method shown, which will not be elaborated here.

[0272] S602: The terminal sends the first capability information to the RAN node. Correspondingly, the RAN node receives the capability information from the terminal.

[0273] It can be understood that after S602, the terminal and the RAN node can adopt Figure 3 or Figure 4 the method shown for communication to improve the spectral efficiency of data transmission, thereby improving the capacity of the communication system, which will not be elaborated here.

[0274] It can be understood that the actions of the RAN node or the terminal in the above S601 - S602 can be performed by Figure 2 the processor 20 in the communication device 20 shown calling the application program code stored in the memory 203, and this application does not make any restrictions on this.

[0275] Based on Figure 6 the method shown, the terminal can send the first capability information to the RAN node, enabling the RAN node to know whether the terminal supports transmitting the first signal and the second signal respectively through different spatial domain parameters. If so, the RAN node can configure fewer reference signals in the second signal to reduce the overhead of the reference signals. Especially for a terminal in high-speed movement, in the case where it needs to carry high-density reference signals while transmitting data signals, the overhead of the reference signals can be reduced to a great extent.

[0276] The above mainly introduces the solution provided by this application from the perspective of the interaction between the terminal and the RAN node. Correspondingly, this application also provides a communication device, which can be the terminal in the above method embodiments, or a device including the above terminal, or a component applicable to the terminal; or, this communication device can be the RAN node in the above method embodiments, or a device including the above RAN node, or a component applicable to the RAN node. It can be understood that in order to implement the above functions, the above terminal, RAN node, etc. include the corresponding hardware structures and / or software modules for executing various functions. Those skilled in the art should easily realize that, combining the units and algorithm operations of each example described in the embodiments disclosed in this article, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0277] This application can divide the functional modules of the terminal and the RAN node according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It can be understood that the division of modules in this application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0278] For example, in the case of dividing each functional module in an integrated manner, Figure 7 FIG. shows a schematic structural diagram of a communication device 70. The communication device 70 includes an interface module 701 and a processing module 702. The interface module 701, which can also be called an interface unit, is used to perform transceiver operations. For example, it can be an interface circuit, a transceiver, a transceiver or a communication interface, etc. The processing module 702, which can also be called a processing unit, is used to perform operations other than transceiver operations. For example, it can be a processing circuit or a processor, etc.

[0279] In some embodiments, the communication device 70 may further include a storage module ( Figure 7 not shown in the figure), which is used to store program instructions and data.

[0280] Exemplarily, the communication device 70 is used to implement the functions of the terminal. The communication device 70 is, for example, Figure 3 the terminal in the embodiment shown in Figure 4 the embodiment shown in

[0281] Among them, the interface module 701 is used to receive a first signal on a first time-domain resource within a first time unit. Among them, the first time unit includes a third time-domain resource, and the third time-domain resource is used to carry a cyclic prefix; the first time-domain resource is a partial time-domain resource or all of the third time-domain resource. For example, the interface module 701 can be used to execute S301.

[0282] The processing module 702 is used to determine a third spatial domain parameter according to the first signal. Among them, the first signal corresponds to a first spatial domain parameter. For example, the processing module 702 can be used to execute S302.

[0283] In a possible implementation manner, the interface module 701 is further used to receive a second signal on a second time-domain resource within the first time unit; among them, the second signal corresponds to a second spatial domain parameter, and the first spatial domain parameter is different from the second spatial domain parameter. For example, the interface module 701 can be used to execute S301a. The processing module 702 is specifically used to determine a third spatial domain parameter according to the first signal and the second signal. Among them, the second signal corresponds to a second spatial domain parameter, and the first spatial domain parameter is different from the second spatial domain parameter. For example, the processing module 702 can be used to execute S302a.

[0284] In a possible implementation manner, the third time-domain resource includes a first time-domain resource and a fourth time-domain resource.

[0285] In a possible implementation manner, in the time domain, the fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

[0286] In a possible implementation manner, the third time-domain resource includes a first time-domain resource, a fourth time-domain resource, and a fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource. The fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

[0287] In a possible implementation manner, the fourth time-domain resource corresponds to the second spatial domain parameter.

[0288] In a possible implementation manner, the interface module 701 is further used to receive a third signal on a sixth time-domain resource within a second time unit; the interface module 701 is further used to receive a fourth signal on a seventh time-domain resource within the second time unit; among them, the second time unit includes a seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is a partial time-domain resource or all of the eighth time-domain resource; the third signal corresponds to the first spatial domain parameter, and the fourth signal corresponds to the second spatial domain parameter; the processing module 702 is specifically used to determine a third spatial domain parameter according to the first signal, the second signal, the third signal, and the fourth signal.

[0289] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are the spatial domain reception parameters of the first device, and the first device is the device that receives the first signal and the second signal.

[0290] In a possible implementation, the interface module 701 is further configured to send first capability information, and the first capability information indicates whether the first device supports transmitting the first signal and the second signal respectively through different spatial domain parameters.

[0291] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are the spatial domain transmission parameters of the second device, and the second device is the device that transmits the first signal and the second signal.

[0292] In a possible implementation, the interface module 701 is further configured to send first indication information; the first indication information is used to indicate the third spatial domain parameter. For example, the interface module 701 may be used to execute S303.

[0293] In a possible implementation, the third spatial domain parameter is the central angle of the target beam, and the target beam is used to transmit data.

[0294] In a possible implementation, the interface module 701 is further configured to receive second indication information, and the second indication information is used to indicate that the first spatial domain parameter and the second spatial domain parameter are different.

[0295] When used to implement the functions of the terminal, for other functions that the communication device 70 can implement, reference may be made to Figure 3 the embodiments shown in Figure 4 the relevant introductions of the embodiments shown, which will not be elaborated here.

[0296] Alternatively, by way of example, the communication device 70 is used to implement the functions of a RAN node. The communication device 70 is, for example, Figure 3 the embodiments shown in Figure 4 the RAN node of the embodiments shown.

[0297] Among them, the interface module 701 is configured to send a first signal on a first time domain resource within a first time unit. Among them, the first time unit includes a second time domain resource and a third time domain resource, and the third time domain resource is used to carry a cyclic prefix; the first time domain resource is part or all of the time domain resources of the third time domain resource; the first signal corresponds to the first spatial domain parameter, and the first signal is used to determine the third spatial domain parameter. For example, the interface module 701 may be used to execute S301.

[0298] In a possible implementation, the processing module 702 is configured to control the interface module 701 to send a second signal on a second time-domain resource within a first time unit. The second signal corresponds to a second spatial-domain parameter, the first spatial-domain parameter is different from the second spatial-domain parameter, and the second signal is used to determine a third spatial-domain parameter. For example, the interface module 701 may be configured to perform S301a.

[0299] In a possible implementation, the third time-domain resource includes a first time-domain resource and a fourth time-domain resource.

[0300] In a possible implementation, in the time domain, the fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

[0301] In a possible implementation, the third time-domain resource includes a first time-domain resource, a fourth time-domain resource, and a fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource. The fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

[0302] In a possible implementation, the fourth time-domain resource corresponds to the second spatial-domain parameter.

[0303] In a possible implementation, the interface module 701 is further configured to send a third signal on a sixth time-domain resource within a second time unit; the interface module 701 is further configured to send a fourth signal on a seventh time-domain resource within the second time unit; the second time unit includes the seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is a partial time-domain resource or all of the time-domain resources of the eighth time-domain resource; the third signal corresponds to a fourth spatial-domain parameter, the fourth signal corresponds to a fifth spatial-domain parameter, the fourth spatial-domain parameter is different from the fifth spatial-domain parameter, and the third signal and the fourth signal are used to determine the third spatial-domain parameter.

[0304] In a possible implementation, the first spatial-domain parameter, the second spatial-domain parameter, and the third spatial-domain parameter are spatial-domain reception parameters of a first device, and the first device is a device that receives the first signal and the second signal.

[0305] In a possible implementation, the interface module 701 is further configured to receive first capability information, and the first capability information indicates whether the first device supports transmitting the first signal and the second signal respectively through different spatial-domain parameters.

[0306] In a possible implementation, the first spatial-domain parameter, the second spatial-domain parameter, and the third spatial-domain parameter are spatial-domain transmission parameters of a second device, and the second device is a device that transmits the first signal and the second signal.

[0307] In a possible implementation, the interface module 701 is further configured to receive first indication information; the first indication information is used to indicate third airspace parameters. For example, the interface module 701 may be configured to execute S303.

[0308] In a possible implementation, the third airspace parameter is the central angle of a target beam, and the target beam is used for data transmission.

[0309] In a possible implementation, the interface module 701 is further configured to send second indication information, where the second indication information is used to indicate that the first airspace parameter is different from the second airspace parameter.

[0310] When used to implement the functions of the RAN node, for other functions that the communication device 70 can implement, reference may be made to Figure 3 or Figure 4 the relevant introductions in the embodiments shown, which will not be elaborated here.

[0311] Alternatively, by way of example, the communication device 70 is used to implement the functions of a terminal. The communication device 70 is, for example, Figure 6 the terminal in the embodiments shown.

[0312] Among them, the processing module 702 is configured to determine first capability information. The first capability information indicates whether it supports transmitting a first signal and a second signal respectively through different airspace parameters. The time domain resource of the first signal is the first time domain resource within a first time unit, the time domain resource of the second signal is the second time domain resource within the first time unit, the first time unit includes the second time domain resource and a third time domain resource, the first time domain resource is included in the third time domain resource, and the third time domain resource is used for transmitting a cyclic prefix. For example, the processing module 702 may be configured to execute S601. The interface module 701 is configured to send the first capability information. For example, the interface module 701 may be configured to execute S602.

[0313] In a possible implementation, the airspace parameter is an airspace reception parameter or an airspace transmission parameter.

[0314] In a possible implementation, when the first capability information indicates that it supports transmitting the first signal and the second signal respectively through different airspace parameters, the interface module 701 is further configured to transmit the first signal on the first time domain resource; the interface module 701 is further configured to transmit the second signal on the second time domain resource; among them, the first signal corresponds to the first airspace parameter, the second signal corresponds to the second airspace parameter, the first airspace parameter is different from the second airspace parameter, and the first signal and the second signal are used to determine the third airspace parameter.

[0315] In a possible implementation, the third time domain resource includes the first time domain resource and a fourth time domain resource.

[0316] In a possible implementation, in the time domain, the fourth time domain resource is located after the first time domain resource and before the second time domain resource, and is continuous with the first time domain resource.

[0317] In a possible implementation, the third time domain resource includes the first time domain resource, the fourth time domain resource, and the fifth time domain resource. In the time domain, the fifth time domain resource is located before the first time domain resource and is continuous with the first time domain resource. The fourth time domain resource is located after the first time domain resource and before the second time domain resource, and is continuous with the first time domain resource.

[0318] In a possible implementation, the fourth time domain resource corresponds to the second spatial domain parameter.

[0319] In a possible implementation, the interface module 701 is further configured to transmit a third signal on a sixth time domain resource within a second time unit; the interface module 701 is further configured to transmit a fourth signal on a seventh time domain resource within the second time unit; wherein, the second time unit includes the seventh time domain resource and the eighth time domain resource, and the eighth time domain resource is used to carry a cyclic prefix; the sixth time domain resource is a partial time domain resource or all of the time domain resources of the eighth time domain resource; the third signal corresponds to the first spatial domain parameter, the fourth signal corresponds to the second spatial domain parameter, and the third signal and the fourth signal are used to determine the third spatial domain parameter.

[0320] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain reception parameters of a first device, and the first device is a device that receives the first signal and the second signal.

[0321] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain transmission parameters of a second device, and the second device is a device that transmits the first signal and the second signal.

[0322] In a possible implementation, the interface module 701 is further configured to transmit first indication information; the first indication information is used to indicate the third spatial domain parameter.

[0323] In a possible implementation, the third spatial domain parameter is the central angle of a target beam, and the target beam is used to transmit data.

[0324] In a possible implementation, the interface module 701 is further configured to receive second indication information, and the second indication information is used to indicate that the first spatial domain parameter and the second spatial domain parameter are different.

[0325] When used to implement the functions of a terminal, for other functions that the communication device 70 can implement, reference may be made to Figure 6 the relevant introductions in the illustrated embodiments, which will not be elaborated here.

[0326] Alternatively, exemplarily, the communication device 70 is used to implement the functions of a RAN node. The communication device 70 is, for example, Figure 6 the RAN node of the embodiment shown.

[0327] Among them, the interface module 701 is used to receive first capability information. Among them, the first capability information indicates whether the terminal supports transmitting a first signal and a second signal respectively through different spatial domain parameters. The time domain resource of the first signal is the first time domain resource within the first time unit, the time domain resource of the second signal is the second time domain resource within the first time unit, the first time unit includes the second time domain resource and the third time domain resource, the first time domain resource is included within the third time domain resource, and the third time domain resource is used to transmit a cyclic prefix. For example, the interface module 701 may be used to execute S602.

[0328] The processing module 702 is used to communicate with the terminal according to the first capability information.

[0329] In a possible implementation manner, the spatial domain parameter is a spatial domain reception parameter or a spatial domain transmission parameter.

[0330] In a possible implementation manner, the first capability information indicates that the terminal supports transmitting the first signal and the second signal respectively through different spatial domain parameters. The interface module 701 is specifically used to transmit the first signal on the first time domain resource; the interface module 701 is also specifically used to transmit the second signal on the second time domain resource; among them, the first signal corresponds to the first spatial domain parameter, the second signal corresponds to the second spatial domain parameter, the first spatial domain parameter and the second spatial domain parameter are different, and the first spatial domain parameter and the second spatial domain parameter are used to determine the third spatial domain parameter.

[0331] In a possible implementation manner, the third time domain resource includes the first time domain resource and the fourth time domain resource.

[0332] In a possible implementation manner, in the time domain, the fourth time domain resource is located after the first time domain resource, before the second time domain resource, and is continuous with the first time domain resource.

[0333] In a possible implementation manner, the third time domain resource includes the first time domain resource, the fourth time domain resource, and the fifth time domain resource. In the time domain, the fifth time domain resource is located before the first time domain resource and is continuous with the first time domain resource, and the fourth time domain resource is located after the first time domain resource, before the second time domain resource, and is continuous with the first time domain resource.

[0334] In a possible implementation manner, the fourth time domain resource corresponds to the second spatial domain parameter.

[0335] In a possible implementation, the interface module 701 is further configured to transmit a third signal on a sixth time domain resource within a second time unit; the interface module 701 is further configured to transmit a fourth signal on a seventh time domain resource within the second time unit; wherein, the second time unit includes a seventh time domain resource and an eighth time domain resource, and the eighth time domain resource is used to carry a cyclic prefix; the sixth time domain resource is a partial time domain resource or all of the time domain resources of the eighth time domain resource; the third signal corresponds to a fourth spatial domain parameter, the fourth signal corresponds to a fifth spatial domain parameter, the fourth spatial domain parameter is different from the fifth spatial domain parameter, and the third signal and the fourth signal are used to determine a third spatial domain parameter.

[0336] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain reception parameters of a first device, and the first device is a device that receives the first signal and the second signal.

[0337] In a possible implementation, the first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain transmission parameters of a second device, and the second device is a device that transmits the first signal and the second signal.

[0338] In a possible implementation, the interface module 701 is further configured to receive first indication information; the first indication information is used to indicate the third spatial domain parameter.

[0339] In a possible implementation, the third spatial domain parameter is the central angle of a target beam, and the target beam is used to transmit data.

[0340] In a possible implementation, the interface module 701 is further configured to transmit second indication information, and the second indication information is used to indicate that the first spatial domain parameter is different from the second spatial domain parameter.

[0341] When used to implement the functions of a RAN node, for other functions that the communication device 70 can implement, reference may be made to Figure 6 the relevant introduction in the illustrated embodiments, which will not be elaborated here.

[0342] In a simple embodiment, those skilled in the art can conceive that the communication device 70 can adopt Figure 2 the form shown. For example, Figure 2 the processor 201 in

[0343] Exemplarily, Figure 7 the functions / implementation processes of the interface module 701 and the processing module 702 in Figure 2 can be implemented by the processor 201 in Figure 7The function / implementation process of the processing module 702 in can be achieved by Figure 2 the processor 201 in calling the computer-executable instructions stored in the memory 203, Figure 7 The function / implementation process of the interface module 701 in can be achieved by Figure 2 the communication interface 204 in.

[0344] It can be understood that one or more of the above modules or units can be implemented by software, hardware, or a combination of both. When any of the above modules or units is implemented by software, the software exists in the form of computer program instructions and is stored in the memory. The processor can be used to execute the program instructions and implement the above method flow. The processor can be built into the SoC (system on a chip) or ASIC, or it can be an independent semiconductor chip. In addition to the core for executing software instructions for arithmetic or processing in the processor, it can further include necessary hardware accelerators, such as field programmable gate array (FPGA), PLD (programmable logic device), or logic circuits for implementing dedicated logic operations.

[0345] When the above modules or units are implemented by hardware, the hardware can be any one or any combination of CPU, microprocessor, digital signal processing (DSP) chip, microcontroller unit (MCU), artificial intelligence processor, ASIC, SoC, FPGA, PLD, dedicated digital circuit, hardware accelerator, or non-integrated discrete device, which can run the necessary software or execute the above method flow without relying on software.

[0346] Optionally, the present application further provides a chip system, including: at least one processor and an interface. The at least one processor is coupled to the memory through the interface. When the at least one processor executes the computer program or instructions in the memory, the method in any of the above method embodiments is executed. In a possible implementation manner, the chip system further includes a memory. Optionally, the chip system can be composed of chips, or it can include chips and other discrete devices. The present application does not make specific limitations on this.

[0347] Optionally, the present application further provides a computer-readable storage medium. All or part of the processes in the above method embodiments may be completed by a computer program instructing relevant hardware. This program may be stored in the above computer-readable storage medium. When this program is executed, it may include the processes of the above method embodiments. The computer-readable storage medium may be an internal storage unit of the communication device in any of the foregoing embodiments, such as the hard disk or memory of the communication device. The above computer-readable storage medium may also be an external storage device of the communication device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the communication device. Further, the above computer-readable storage medium may also include both the internal storage unit and the external storage device of the communication device. The computer-readable storage medium is used to store the above computer program and other programs and data required by the communication device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

[0348] Optionally, the present application further provides a computer program product. All or part of the processes in the above method embodiments may be completed by a computer program instructing relevant hardware. This program may be stored in the above computer program product. When this program is executed, it may include the processes of the above method embodiments.

[0349] Optionally, the present application further provides a computer instruction. All or part of the processes in the above method embodiments may be completed by a computer instruction instructing relevant hardware (such as a computer, a processor, a signal sending end, or a signal receiving end). This program may be stored in the above computer-readable storage medium or the above computer program product.

[0350] Optionally, the present application further provides a communication system, including: Figure 3 The terminal and the RAN node in the method shown.

[0351] Optionally, the present application further provides a communication system, including: Figure 4 The terminal and the RAN node in the method shown.

[0352] Optionally, the present application further provides a communication system, including: Figure 6 The terminal and the RAN node in the method shown.

[0353] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0354] In several embodiments provided in the present application, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form.

[0355] The units described as separate components may or may not be physically separated. The components displayed as units may be one physical unit or multiple physical units, that is, they can be located in one place, or they can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0356] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0357] As mentioned above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method, characterized in that, The method includes: Receiving a first signal on a first time-domain resource within a first time unit; Receiving a second signal on a second time-domain resource within the first time unit; Wherein, the first time unit includes the second time-domain resource and a third time-domain resource, the third time-domain resource is used to carry a cyclic prefix; the first time-domain resource is part or all of the time-domain resources of the third time-domain resource; the first signal corresponds to a first spatial domain parameter, the second signal corresponds to a second spatial domain parameter, and the first spatial domain parameter is different from the second spatial domain parameter; Determining a third spatial domain parameter according to the first signal and the second signal.

2. The method according to claim 1, wherein The third time-domain resource includes the first time-domain resource and a fourth time-domain resource.

3. The method according to claim 2, characterized in that In the time domain, the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource, and is continuous with the first time-domain resource.

4. The method according to claim 1, characterized in that, The third time-domain resource includes the first time-domain resource, a fourth time-domain resource, and a fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource, and the fourth time-domain resource is located after the first time-domain resource and before the second time-domain resource, and is continuous with the first time-domain resource.

5. The method according to any one of claims 2-4, characterized in that, The fourth time-domain resource corresponds to the second spatial domain parameter.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Receiving a third signal on a sixth time-domain resource within a second time unit; Receiving a fourth signal on a seventh time-domain resource within the second time unit; Wherein, the second time unit includes the seventh time-domain resource and an eighth time-domain resource, the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is part or all of the time-domain resources of the eighth time-domain resource; the third signal corresponds to the first spatial domain parameter, and the fourth signal corresponds to the second spatial domain parameter; The determining the third spatial domain parameter according to the first signal and the second signal includes: Determining the third spatial domain parameter according to the first signal, the second signal, the third signal, and the fourth signal.

7. The method according to any one of claims 1-6, characterized in that The first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain reception parameters of a first device, and the first device is a device that receives the first signal and the second signal.

8. The method according to claim 7, characterized in that, The method further includes: Sending first capability information, the first capability information indicating whether the first device supports transmitting the first signal and the second signal respectively through different spatial domain parameters.

9. The method according to any one of claims 1-6, characterized in that, The first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain transmission parameters of a second device, and the second device is a device that transmits the first signal and the second signal.

10. The method according to claim 9, characterized in that, The method further includes: Sending first indication information; the first indication information is used to indicate the third spatial domain parameter.

11. The method according to claim 10, characterized in that, The third spatial domain parameter is the central angle of a target beam, and the target beam is used to transmit data.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: Receiving second indication information, the second indication information being used to indicate that the first spatial domain parameter is different from the second spatial domain parameter.

13. A communication method, characterized in that, The method includes: Send a first signal on a first time-domain resource within a first time unit; Send a second signal on a second time-domain resource within the first time unit; Wherein, the first time unit includes the second time-domain resource and a third time-domain resource, and the third time-domain resource is used to carry a cyclic prefix; the first time-domain resource is part or all of the third time-domain resource; the first signal corresponds to a first spatial domain parameter, the second signal corresponds to a second spatial domain parameter, the first spatial domain parameter and the second spatial domain parameter are different, and the first signal and the second signal are used to determine a third spatial domain parameter.

14. The method according to claim 13, wherein The third time-domain resource includes the first time-domain resource and a fourth time-domain resource.

15. The method according to claim 14, wherein In the time domain, the fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

16. The method according to claim 13, wherein The third time-domain resource includes a first time-domain resource, a fourth time-domain resource, and a fifth time-domain resource. In the time domain, the fifth time-domain resource is located before the first time-domain resource and is continuous with the first time-domain resource, and the fourth time-domain resource is located after the first time-domain resource, before the second time-domain resource, and is continuous with the first time-domain resource.

17. The method according to any one of claims 14-16, characterized in that, The fourth time-domain resource corresponds to the second spatial domain parameter.

18. The method according to any one of claims 13-17, characterized in that, The method further includes: Send a third signal on a sixth time-domain resource within a second time unit; Send a fourth signal on a seventh time-domain resource within the second time unit; Wherein, the second time unit includes the seventh time-domain resource and an eighth time-domain resource, and the eighth time-domain resource is used to carry a cyclic prefix; the sixth time-domain resource is part or all of the eighth time-domain resource; the third signal corresponds to a fourth spatial domain parameter, the fourth signal corresponds to a fifth spatial domain parameter, the fourth spatial domain parameter and the fifth spatial domain parameter are different, and the third signal and the fourth signal are used to determine the third spatial domain parameter.

19. The method according to any one of claims 13-18, characterized in that, The first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain reception parameters of a first device, and the first device is a device that receives the first signal and the second signal.

20. The method according to claim 19, characterized in that, The method further includes: Receive first capability information, and the first capability information indicates whether the first device supports transmitting the first signal and the second signal respectively through different spatial domain parameters.

21. The method according to any one of claims 14 - 18, characterized in that, The first spatial domain parameter, the second spatial domain parameter, and the third spatial domain parameter are spatial domain transmission parameters of a second device, and the second device is a device that transmits the first signal and the second signal.

22. The method according to claim 21, wherein The method further includes: Receive first indication information; the first indication information is used to indicate the third spatial domain parameter.

23. The method according to claim 22, wherein The third spatial domain parameter is the central angle of a target beam, and the target beam is used to transmit data.

24. The method according to any one of claims 13 - 23, characterized in that, The method further includes: Send second indication information, and the second indication information is used to indicate that the first spatial domain parameter and the second spatial domain parameter are different.

25. A communication device, characterized in that, Comprising units or modules for performing the method according to any one of claims 1 to 12, or comprising units or modules for performing the method according to any one of claims 13 to 24.

26. A communication device, characterized in that, Comprising: A processor, the processor being coupled to a memory for storing programs or instructions, which when executed by the processor cause the device to perform the method according to any one of claims 1 to 12, or to perform the method according to any one of claims 13 to 24.

27. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, cause the computer to perform the method according to any one of claims 1 to 12 or the method according to any one of claims 13 to 24.

28. A computer program product, comprising computer program code therein, characterized in that, When the computer program code runs on a computer, cause the computer to implement the method according to any one of claims 1 to 12 or to implement the method according to any one of claims 13 to 24.

29. A communication system, characterized in that, Comprising: A device for performing the method according to any one of claims 1 to 12, and / or a device for performing the method according to any one of claims 13 to 24.

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