Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and apparatus. The method comprises: a terminal device can acquire N pathlosses on N transmission paths in communication with a network device; the network device indicates to the terminal device a transmission path for sending an uplink signal; and the terminal device can determine the power for sending the uplink signal on the basis of the indication of the network device. By means of the method, it is not necessary for the network device to send a PLRS to the terminal device to measure the pathloss, so that the overhead of a reference signal can be reduced. Moreover, the terminal device can acquire pathlosses corresponding to a plurality of paths in communication with the network device, so that the accuracy of the power for sending an uplink signal by means of the terminal device can be improved.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 24, 2023, with application number 202311585336.4 and application name “Communication Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Art

[0003] To mitigate potential interference from a terminal device's uplink transmission and help the terminal device save energy, uplink transmit power control is typically performed. Specifically, network devices typically control the uplink transmit power of a terminal device through the following steps: the network device sends a pathloss reference signal (PLRS) to the terminal device; the terminal device measures the path loss based on the PLRS and feeds back the measurement result to the network device; the network device calculates the uplink transmit power based on the terminal device's measurement result; the network device sends a transmit power control (TPC) command to the terminal device, where the TPC indicates the power at which the terminal device should transmit an uplink channel or signal; and the terminal device transmits the uplink channel or signal based on the TPC.

[0004] Currently, the path loss measured by a terminal device is the overall path loss between the network device and the terminal device, or in other words, the average path loss of multiple paths between the network device and the terminal device. Therefore, the power of the terminal device's transmitted signal is not accurate.

[0005] Summary of the Invention

[0006] The present application provides a communication method and a communication device, which can improve the power accuracy of signals sent by terminal equipment.

[0007] In the first aspect, a power control method is provided, which can be executed by a terminal device, or by a module (such as a chip or circuit) in the terminal device, or by a logical node, logical module or software that can implement all or part of the terminal device functions. This application does not limit this.

[0008] The method includes: a terminal device obtains N path losses on N transmission paths, where the N transmission paths are transmission paths between the terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths; the terminal device receives first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, and the first transmission path belongs to the above-mentioned N transmission paths; the terminal device determines the power of the signal sent to the network device based on the first information, where N is a positive integer greater than or equal to 1.

[0009] This method eliminates the need for network devices to send PLRS to terminal devices to measure path loss, reducing reference signal overhead. Furthermore, the terminal device can obtain path losses corresponding to multiple communication paths with the network device, thereby improving the accuracy of the power of the terminal device's uplink signal.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the above method also includes: the terminal device receives second information from the network device, and the second information is used to indicate the above N path losses on the above N transmission paths; the above terminal device obtains the N path losses on the N transmission paths, including: the terminal device determines the N path losses on the above N transmission paths based on the second information.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned second information is also used to indicate M path losses on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M path losses correspond one-to-one to the M transmission paths, wherein M is a positive integer greater than or equal to 1.

[0012] Through the above method, the network device can reduce multiple configurations of the terminal device during the movement process by configuring the path loss of the terminal device's transmission path at multiple locations in advance, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: the terminal device receives third information from the network device, where the third information is used to indicate a mapping relationship between RSRP and path loss on the transmission path; the terminal device measures the RSRP on the N transmission paths to obtain N RSRPs, where the N RSRPs correspond one-to-one to the N transmission paths; the terminal device obtains the N path losses on the N transmission paths, including: the terminal device determines the N path losses on the N transmission paths based on the third information and the N RSRPs.

[0014] It should be understood that the above-mentioned second information is equivalent to the network device explicitly indicating the N path losses on the above-mentioned N transmission paths to the terminal device, and the above-mentioned third information is equivalent to the network device implicitly indicating the above-mentioned N path losses on the above-mentioned N transmission paths to the terminal device.

[0015] Exemplarily, the second information and / or the third information may be indicated to the terminal device by the network device using semi-static radio resource control (RRC) signaling or MAC-CE (Media / Medium Access Control control element) signaling, which is not limited in this application.

[0016] Specifically, each of the N transmission paths includes at least one of the following information:

[0017] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0018] On the second aspect, a power control method is provided, which can be executed by a network device, or by a module (such as a chip or circuit) in the network device, or by a logical node, logical module or software that can implement all or part of the network device functions. This application does not limit this.

[0019] The method includes: a network device obtains N path losses on N transmission paths, where the N transmission paths are transmission paths between a terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths; the network device sends second information to the terminal device, where the second information is used to indicate the N path losses on the N transmission paths; and the network device sends first information to the terminal device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths, and the first information is used by the terminal device to determine the power of the transmitted signal, wherein N is a positive integer greater than or equal to 1.

[0020] This method eliminates the need for network devices to send PLRS to terminal devices to measure path loss, reducing reference signal overhead. Furthermore, the terminal device can obtain path losses corresponding to multiple communication paths with the network device, thereby improving the accuracy of the power of the terminal device's uplink signal.

[0021] In combination with the second aspect, in certain implementations of the second aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned second information is also used to indicate M path losses on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, wherein M is a positive integer greater than or equal to 1.

[0022] Through the above method, the network device can reduce multiple configurations of the terminal device during the movement process by configuring the path loss of the terminal device's transmission path at multiple locations in advance, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0023] Specifically, each of the N transmission paths includes at least one of the following information:

[0024] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0025] On the third aspect, a power control method is provided, which can be executed by a network device, or by a module (such as a chip or circuit) in the network device, or by a logical node, logical module or software that can realize all or part of the functions of the network device. This application does not limit this.

[0026] The method includes: a network device sends third information to a terminal device, where the third information is used to indicate a mapping relationship between RSRP and path losses on a transmission path, and the third information is used by the terminal device to determine N path losses on N transmission paths, where the N transmission paths are transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

[0027] This method eliminates the need for network devices to send PLRS to terminal devices to measure path loss, reducing reference signal overhead. Furthermore, the terminal device can obtain path losses corresponding to multiple communication paths with the network device, thereby improving the accuracy of the power of the terminal device's uplink signal.

[0028] Specifically, each of the N transmission paths includes at least one of the following information:

[0029] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0030] In the fourth aspect, a timing control method is provided, which can be executed by a terminal device, or by a module (such as a chip or circuit) in the terminal device, or by a logical node, logical module or software that can realize all or part of the terminal device functions. This application does not limit this.

[0031] The method includes: a terminal device obtains N timing advances TAs on N transmission paths, where the N transmission paths are transmission paths between the terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths; the terminal device receives first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, and the first transmission path belongs to the above-mentioned N transmission paths; the terminal device determines the time to send a signal to the network device based on the first information, where N is a positive integer greater than or equal to 1.

[0032] The above method eliminates the need for a terminal device to send an uplink signal to a network device to estimate its timing advance, reducing uplink signal overhead. Furthermore, the terminal device can obtain the timing advances corresponding to multiple communication paths with the network device, thereby improving the timing accuracy of the terminal device's uplink signal transmission.

[0033] In combination with the fourth aspect, in certain implementations of the fourth aspect, the above method also includes: the terminal device receives fourth information from the network device, and the fourth information is used to indicate N TAs on N transmission paths; the above terminal device obtains N TAs on N transmission paths, including: the terminal device determines the N TAs on the above N transmission paths based on the fourth information.

[0034] Exemplarily, the fourth information may indicate N TAs on N transmission paths through the following Table 5. For example, each transmission path in the N transmission paths includes an Azimuth departure angle of the transmission path.

[0035] Table 5

[0036] It can be seen from Table 5 that the Azimuth departure angle corresponding to transmission path 1 is 10°, and the TA corresponding to transmission path 1 is 300Ts; the Azimuth departure angle corresponding to transmission path 2 is 45°, and the TA corresponding to transmission path 2 is 550Ts; the Azimuth departure angle corresponding to transmission path 3 is 55°, and the TA corresponding to transmission path 3 is 780Ts.

[0037] In combination with the fourth aspect, in certain implementations of the fourth aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned fourth information is also used to indicate M TAs on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M TAs correspond one-to-one to the M transmission paths, where M is a positive integer greater than or equal to 1.

[0038] Exemplarily, the fourth information may indicate the TA on the transmission path between the terminal device and the network device when the terminal device is at multiple locations through the following Table 6. For example, each transmission path in the N transmission paths includes an Azimuth departure angle of the transmission path.

[0039] Table 6

[0040] It can be seen from Table 6 that when the terminal device is in the first position, the Azimuth departure angle corresponding to the transmission path 1 of the network device is 10°, and the TA corresponding to the transmission path 1 is 300Ts; when the terminal device is in the first position, the Azimuth departure angle corresponding to the transmission path 2 of the network device is 45°, and the TA corresponding to the transmission path 2 is 550Ts; when the terminal device is in the second position, the Azimuth departure angle corresponding to the transmission path 1 of the network device is 55°, and the TA corresponding to the transmission path 1 is 780Ts; when the terminal device is in the second position, the Azimuth departure angle corresponding to the transmission path 2 of the network device is 65°, and the TA corresponding to the transmission path 2 is 350Ts.

[0041] Exemplarily, the first position and the second position should be positions in the cell managed by the network device, or in other words, the first position and the second position should be positions where the terminal device can communicate with the network device.

[0042] Through the above method, the network device can reduce multiple configurations of the terminal device during movement by configuring the timing advance of the terminal device's transmission path at multiple locations in advance, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0043] In combination with the fourth aspect, in certain implementations of the fourth aspect, the above method also includes: the terminal device receives fifth information from the network device, and the fifth information is used to indicate the mapping relationship between the delay and the TA on the transmission path; the terminal device receives sixth information from the network device, and the sixth information is used to indicate N delays on N transmission paths, and the N delays correspond one-to-one to the N transmission paths; the above-mentioned terminal device obtains N TAs on the N transmission paths, including: the terminal device determines the N TAs on the N transmission paths based on the fifth information and the sixth information.

[0044] It should be understood that the fourth information is equivalent to the network device explicitly indicating the N TAs on the N transmission paths to the terminal device, and the fifth information is equivalent to the network device implicitly indicating the N TAs on the N transmission paths to the terminal device.

[0045] Exemplarily, the fifth information may indicate a mapping relationship between the delay and the TA on the transmission path using the following formula 3:

[0046] TA x =Y*delay x +Offset

[0047] The above Y value and offset can be configured by the network device. The network device can configure the Y value and offset for each of the N transmission paths. The network device can also configure the same Y value and offset for the N transmission paths. This application does not limit this. x is the delay of the xth transmission path among the N transmission paths indicated to the terminal device by the network device through the sixth information. x is the timing advance of the xth transmission path among the N transmission paths.

[0048] Exemplarily, the N delays on the N transmission paths indicated by the sixth information may be as shown in Table 7 below:

[0049] Table 7

[0050] It can be seen from Table 7 that the Azimuth departure angle corresponding to the transmission path 1 of the terminal device is 10°, and the delay indicated by the network device is 150Ts; the Azimuth departure angle corresponding to the transmission path 2 of the terminal device is 45°, and the delay indicated by the network device is 250Ts; the Azimuth departure angle corresponding to the transmission path 3 of the terminal device is 55°, and the delay indicated by the network device is 350Ts.

[0051] For example, the network device configures a Y value of 2 and an offset of 0 for the terminal device. The N TAs on the N transmission paths determined based on the above formula 3 and the above table 7 are shown in the following table 4:

[0052] Table 8

[0053] It can be seen from Table 8 that the TA of the transmission path 1 of the terminal device is 300Ts; the TA of the transmission path 1 of the terminal device is 500Ts; and the TA of the transmission path 1 of the terminal device is 700Ts.

[0054] Exemplarily, the fifth information and the sixth information may be carried in the same message or in different messages, and this application does not impose any limitation on this.

[0055] Exemplarily, the fourth information and / or the fifth information may be indicated by the network device to the terminal device using semi-static RRC signaling or MAC-CE signaling, which is not limited in this application.

[0056] Specifically, each of the N transmission paths includes at least one of the following information:

[0057] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0058] In the fifth aspect, a timing control method is provided, which can be executed by a network device, or by a module in the network device (such as a chip or circuit), or by a logical node, logical module or software that can realize all or part of the functions of the network device. This application does not limit this.

[0059] The method includes: a network device obtains N timing advances TAs on N transmission paths, where the N transmission paths are transmission paths between a terminal device and the network device, and the N TAs correspond one-to-one to the N transmission paths; the network device sends fourth information to the terminal device, where the fourth information is used to indicate the N TAs on the N transmission paths; the network device sends first information to the terminal device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the above-mentioned N transmission paths, and the first information is used by the terminal device to determine the time to send a signal, wherein N is a positive integer greater than or equal to 1.

[0060] The above method eliminates the need for a terminal device to send an uplink signal to a network device to estimate its timing advance, reducing uplink signal overhead. Furthermore, the terminal device can obtain the timing advances corresponding to multiple communication paths with the network device, thereby improving the timing accuracy of the terminal device's uplink signal transmission.

[0061] In combination with the fifth aspect, in certain implementations of the fifth aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned fourth information is also used to indicate M TAs on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, wherein M is a positive integer greater than or equal to 1.

[0062] Through the above method, the network device can reduce multiple configurations of the terminal device during movement by configuring the timing advance of the terminal device's transmission path at multiple locations in advance, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0063] Specifically, each of the N transmission paths includes at least one of the following information:

[0064] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0065] In the sixth aspect, a timing control method is provided, which can be executed by a network device, or by a module in the network device (such as a chip or circuit), or by a logical node, logical module or software that can realize all or part of the functions of the network device. This application does not limit this.

[0066] The method includes: the network device sends fifth information to the terminal device, where the fifth information is used to indicate the mapping relationship between the delay and the TA on the transmission path, and the fifth information is used by the terminal device to determine N TAs on N transmission paths, where the N transmission paths are the transmission paths between the terminal device and the network device, and the N TAs correspond one-to-one to the N transmission paths.

[0067] In combination with the sixth aspect, in certain implementations of the sixth aspect, the above method also includes: the network device sends sixth information to the terminal device, and the sixth information is used to indicate the N delays on the above N transmission paths, and the N delays correspond one-to-one to the above N transmission paths. The sixth information is used by the terminal device to determine the N TAs on the N transmission paths.

[0068] The above method eliminates the need for a terminal device to send an uplink signal to a network device to estimate its timing advance, reducing uplink signal overhead. Furthermore, the terminal device can obtain the timing advances corresponding to multiple communication paths with the network device, thereby improving the timing accuracy of the terminal device's uplink signal transmission.

[0069] Specifically, each of the N transmission paths includes at least one of the following information:

[0070] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0071] In the seventh aspect, a power control device is provided, which includes: a processing unit for obtaining N path losses on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths; the device also includes: a transceiver unit for receiving first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the above-mentioned N transmission paths; the above-mentioned processing unit is also used to determine the power of sending a signal to the network device based on the first information, where N is a positive integer greater than or equal to 1.

[0072] In combination with the seventh aspect, in certain implementations of the seventh aspect, the above-mentioned transceiver unit is further used to receive second information from a network device, and the second information is used to indicate the above-mentioned N path losses on the above-mentioned N transmission paths; the above-mentioned processing unit is used to obtain the N path losses on the N transmission paths, including: the above-mentioned processing unit is used to determine the N path losses on the above-mentioned N transmission paths based on the second information.

[0073] In combination with the seventh aspect, in certain implementations of the seventh aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned second information is also used to indicate M path losses on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M path losses correspond one-to-one to the M transmission paths, wherein M is a positive integer greater than or equal to 1.

[0074] In combination with the seventh aspect, in certain implementations of the seventh aspect, the above-mentioned transceiver unit is further used to receive third information from a network device, and the third information is used to indicate a mapping relationship between RSRP and path loss on the transmission path; the above-mentioned processing unit is further used to measure the RSRP on the above-mentioned N transmission paths to obtain N RSRPs, and the N RSRPs correspond one-to-one to the above-mentioned N transmission paths; the above-mentioned processing unit is used to obtain N path losses on the N transmission paths, including: the above-mentioned processing unit is used to determine the N path losses on the above-mentioned N transmission paths based on the third information and the N RSRPs.

[0075] In an eighth aspect, a power control device is provided, which includes: a processing unit, used to obtain N path losses on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths; the device also includes: a transceiver unit, used to send second information to the terminal device, where the second information is used to indicate the N path losses on the N transmission paths; the transceiver unit is also used to send first information to the terminal device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths, and the first information is used for the terminal device to determine the power of the transmitted signal, wherein N is a positive integer greater than or equal to 1.

[0076] In combination with the eighth aspect, in certain implementations of the eighth aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned second information is also used to indicate M path losses on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, wherein M is a positive integer greater than or equal to 1.

[0077] In a ninth aspect, a power control device is provided, comprising: a transceiver unit for sending third information to a terminal device, the third information being used to indicate a mapping relationship between RSRP and path loss on a transmission path, the third information being used by the terminal device to determine N path losses on N transmission paths, the N transmission paths being transmission paths between the terminal device and a network device, the N path losses corresponding one-to-one to the N transmission paths.

[0078] In the tenth aspect, a timing control device is provided, which includes: a processing unit for obtaining N timing advances TA on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths; the device also includes: a transceiver unit for receiving first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, and the first transmission path belongs to the above-mentioned N transmission paths; the above-mentioned processing unit is also used to determine the time to send a signal to the network device based on the first information, where N is a positive integer greater than or equal to 1.

[0079] In combination with the tenth aspect, in certain implementations of the tenth aspect, the above-mentioned transceiver unit is also used to receive fourth information from the network device, and the fourth information is used to indicate N TAs on N transmission paths; the above-mentioned processing unit is used to obtain N TAs on N transmission paths, including: the above-mentioned processing unit is used to determine the N TAs on the above-mentioned N transmission paths based on the fourth information.

[0080] In combination with the tenth aspect, in certain implementations of the tenth aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned fourth information is also used to indicate M TAs on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M TAs correspond one-to-one to the M transmission paths, where M is a positive integer greater than or equal to 1.

[0081] In combination with the tenth aspect, in certain implementations of the tenth aspect, the above-mentioned transceiver unit is also used to receive fifth information from the network device, and the fifth information is used to indicate the mapping relationship between the delay and the TA on the transmission path; the above-mentioned transceiver unit is also used to receive sixth information from the network device, and the sixth information is used to indicate N delays on N transmission paths, and the N delays correspond one-to-one to the N transmission paths; the above-mentioned processing unit is used to obtain N TAs on the N transmission paths, including: the above-mentioned processing unit is used to determine the N TAs on the N transmission paths based on the fifth information and the sixth information.

[0082] In the eleventh aspect, a timing control device is provided, which includes: a processing unit for obtaining N timing advances TA on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths; the device also includes: a transceiver unit for sending fourth information to the terminal device, where the fourth information is used to indicate the N TAs on the N transmission paths; the transceiver unit is also used to send first information to the terminal device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the above-mentioned N transmission paths, and the first information is used for the terminal device to determine the time to send a signal, wherein N is a positive integer greater than or equal to 1.

[0083] In combination with the eleventh aspect, in certain implementations of the eleventh aspect, the above-mentioned N transmission paths are transmission paths between the terminal device and the network device, including: the above-mentioned N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, and the above-mentioned fourth information is also used to indicate M TAs on the M transmission paths, and the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, wherein M is a positive integer greater than or equal to 1.

[0084] In the twelfth aspect, a timing control device is provided, which includes: a transceiver unit for sending fifth information to a terminal device, wherein the fifth information is used to indicate a mapping relationship between a delay and a TA on a transmission path, and the fifth information is used by the terminal device to determine N TAs on N transmission paths, wherein the N transmission paths are transmission paths between the terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths.

[0085] In combination with the twelfth aspect, in certain implementations of the twelfth aspect, the above-mentioned transceiver unit is also used to send sixth information to the terminal device, and the sixth information is used to indicate the N delays on the above-mentioned N transmission paths, and the N delays correspond one-to-one to the above-mentioned N transmission paths. The sixth information is used by the terminal device to determine the N TAs on the N transmission paths.

[0086] In the thirteenth aspect, a communication device is provided, comprising a processor, wherein the processor is used to, by executing a computer program or instruction or through a logic circuit, enable the communication device to perform the method described in the first aspect and any possibility of the first aspect, or enable the communication device to perform the method described in the second aspect and any possibility of the second aspect, or enable the communication device to perform the method described in the third aspect and any possibility of the third aspect, or enable the communication device to perform the method described in the fourth aspect and any possibility of the fourth aspect, or enable the communication device to perform the method described in the fifth aspect and any possibility of the fifth aspect, or enable the communication device to perform the method described in the sixth aspect and any possibility of the sixth aspect.

[0087] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0088] In a possible implementation, the communication device further includes a communication interface, which is used to input and / or output signals.

[0089] In the fourteenth aspect, a communication device is provided, comprising a logic circuit and an input / output interface, the input / output interface being used to input and / or output signals, the logic circuit being used to execute the method described in the first aspect and any possibility of the first aspect, or the method described in the second aspect and any possibility of the second aspect, or the method described in the third aspect and any possibility of the third aspect, or the method described in the fourth aspect and any possibility of the fourth aspect, or the method described in the fifth aspect and any possibility of the fifth aspect, or the method described in the sixth aspect and any possibility of the sixth aspect.

[0090] In the fifteenth aspect, a computer-readable storage medium is provided, on which a computer program or instruction is stored. When the computer program or the instruction is run on a computer, the method described in the first aspect and any possibility of the first aspect is executed, or the method described in the second aspect and any possibility of the second aspect is executed, or the method described in the third aspect and any possibility of the third aspect is executed, or the method described in the fourth aspect and any possibility of the fourth aspect is executed, or the method described in the fifth aspect and any possibility of the fifth aspect is executed, or the method described in the sixth aspect and any possibility of the sixth aspect is executed.

[0091] In the sixteenth aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect and any possibility of the first aspect to be executed, or the method described in the second aspect and any possibility of the second aspect to be executed, or the method described in the third aspect and any possibility of the third aspect to be executed, or the method described in the fourth aspect and any possibility of the fourth aspect to be executed, or the method described in the fifth aspect and any possibility of the fifth aspect to be executed, or the method described in the sixth aspect and any possibility of the sixth aspect to be executed.

[0092] In the seventeenth aspect, a communication system is provided, which includes the above-mentioned network device and the above-mentioned terminal device, the terminal device is used to execute the method described in the above-mentioned first aspect and any possibility of the first aspect, or to execute the method described in the above-mentioned fourth aspect and any possibility of the fourth aspect, and the network device is used to execute the method described in the above-mentioned second aspect and any possibility of the second aspect, or to execute the method described in the above-mentioned third aspect and any possibility of the third aspect, or to execute the method described in the above-mentioned fifth aspect and any possibility of the fifth aspect, or to execute the method described in the above-mentioned sixth aspect and any possibility of the sixth aspect.

[0093] For the description of the beneficial effects of the seventh to seventeenth aspects, reference can be made to the description of the first to sixth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] FIG1 is a schematic diagram of an architecture 100 of a communication system applicable to an embodiment of the present application.

[0095] FIG2 is a schematic flow chart of a power control method 200 provided in an embodiment of the present application.

[0096] FIG3 is another schematic flowchart of a power control method 200 provided in an embodiment of the present application.

[0097] FIG4 is another schematic flowchart of a power control method 200 provided in an embodiment of the present application.

[0098] FIG5 is a schematic block diagram of a communication device 500 applicable to an embodiment of the present application.

[0099] FIG6 is a schematic block diagram of a communication device 600 applicable to an embodiment of the present application.

[0100] FIG7 is a schematic block diagram of a communication device 700 applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0101] First, a communication system to which the embodiments of the present application are applicable is described.

[0102] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, non-terrestrial network (NTN) communication system, fifth generation (5G) system or new radio (NR), and future communication systems, such as sixth generation (6G) system.

[0103] In the embodiment of the present application, the network device is an access device that the terminal device accesses to the mobile communication system in a wireless manner, for example, including an access network (AN) device, such as a base station. The network device may also refer to a device that communicates with the terminal device at the air interface. The network device may include an evolved Node B (also referred to as eNB or e-NodeB) in an LTE system or an advanced long term evolution (LTE-A); the network device may also include a next generation node B (gNB) in a 5G NR system; or, the network device may also include an access node in a wireless fidelity (Wi-Fi) system; or the network device may be a relay station, an on-board device, and a future evolved public land mobile network (PLMN) device, a device in a D2D network, a device in a machine to machine (M2M) network, a device in an Internet of Things (IoT) network, or a network device in a PLMN network. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0104] In addition, the base station in the embodiment of the present application may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs can be centrally controlled by one CU. CU and DU can be divided according to the protocol layer functions of the wireless network they possess, for example, the functions of the packet data convergence protocol (PDCP) layer and above protocol layers are set in the CU, and the protocol layers below the PDCP, such as the radio link control (RLC) layer and the medium access control (MAC) layer, are set in the DU. It should be noted that this division of the protocol layer is only an example, and it can also be divided in other protocol layers. The radio frequency device can be remote and not placed in the DU, or it can be integrated in the DU, or partially remote and partially integrated in the DU. The embodiment of the present application does not impose any restrictions. In addition, in some embodiments, the control plane (CP) and user plane (UP) of the CU can be separated and divided into different entities for implementation, namely the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity). In this network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the UE can be sent to the CU through the DU. The DU can directly encapsulate the signaling through the protocol layer and transparently transmit it to the UE or CU without parsing it. In this network architecture, the CU is divided into a network device on the radio access network (RAN) side. In addition, the CU can also be divided as a network device on the core network (CN) side. This application does not limit this.

[0105] The network device may also be a server, etc. For example, the network device in vehicle to everything (V2X) technology may be a road side unit (RSU).

[0106] In an embodiment of the present application, a terminal device is a device with wireless transceiver functions, which can send signals to a network device or receive signals from a network device. The terminal device may include user equipment (UE), sometimes also referred to as a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, etc. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, D2D, V2X, machine-to-machine / machine-type communications (M2M / MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots and other scenarios. For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a VR terminal, an AR terminal, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a smart speaker in an IoT network, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc. As an example and not a limitation, in the embodiments of the present application, the terminal device can also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing and shoes. The various terminal devices introduced above, if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as vehicle-mounted terminal devices, which are also called on-board units (OBUs). The terminal device of the present application can also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit that is built into the vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0107] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

[0108] In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and / or engineering techniques. The term "product" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and / or carrying instructions and / or data.

[0109] FIG1 is a schematic diagram of a system 100 to which the communication method according to an embodiment of the present application can be applied. As shown in FIG1 , system 100 includes a network device 102 and terminal devices 104, 106, 108, and 110. Network device 102 may include one or more antennas for communicating with terminal devices 104, 106, 108, and 110. Furthermore, network device 102 may additionally include a transmitter chain and a receiver chain. Those skilled in the art will appreciate that these may include multiple components related to signal transmission and reception (e.g., a processor, a modulator, a multiplexer, a demodulator, a demultiplexer, or an antenna, etc.).

[0110] The network device 102 can communicate with a plurality of terminal devices, such as terminal device 104, terminal device 106, terminal device 108, and terminal device 110. However, it is understood that the network device 102 can communicate with any number of terminal devices similar to terminal device 104, terminal device 106, terminal device 108, or terminal device 110.

[0111] As shown in Figure 1, when network device 102 communicates with a terminal device, the signal can be transmitted in a straight line or reflected by an obstacle. For example, the signal between the network device and terminal devices 104 and 106 can be transmitted in a straight line. When obstacles 1 and 2 are located near the network device and terminal devices 108 and 110, for example, the signal between network device 102 and terminal device 108 can be transmitted via path 1, or the signal between network device 102 and terminal device 108 can be transmitted via path 2, and the signal between network device 102 and terminal device 110 can be transmitted via path 3, or the signal between network device 102 and terminal device 110 can be transmitted via path 2.

[0112] It should be understood that the signal transmission between network device 102 and terminal device 108 via path 1 and path 2 shown in FIG1 is merely an example. Signal transmission between network device 102 and terminal device 108 may also be performed via other paths, which is not limited in this application. Similarly, signal transmission between network device 102 and terminal devices 104, 106, and 110 may also be performed via other paths, which is not limited in this application.

[0113] To mitigate potential interference from a terminal device's uplink transmission and help the terminal device save energy, uplink transmit power control is typically performed. Specifically, network devices typically control the uplink transmit power of a terminal device through the following steps: the network device sends a pathloss reference signal (PLRS) to the terminal device; the terminal device measures the path loss based on the PLRS and feeds back the measurement result to the network device; the network device calculates the uplink transmit power based on the terminal device's measurement result; the network device sends a transmit power control (TPC) command to the terminal device, where the TPC indicates the power at which the terminal device should transmit an uplink channel or signal; and the terminal device transmits the uplink channel or signal based on the TPC.

[0114] Currently, the path loss measured by a terminal device is the overall path loss for signal transmission between the network device and the terminal device, or in other words, the path loss measured by the terminal device is the average path loss of multiple paths between the network device and the terminal device. Therefore, the path loss measured by the terminal device has a low accuracy problem.

[0115] Based on this, the present application provides a power control method 200 that can improve the accuracy of power control between a terminal device and a network device. It should be noted that in Figure 2, the network device and the terminal device are used as the execution subjects of the interactive schematic to illustrate the method, but the present application does not limit the execution subjects of the interactive schematic. Exemplarily, the network device and the terminal device in Figure 2 can also be chips, chip systems or processors that support the implementation of the method, and can also be logical nodes, logical modules or software that implement all or part of its functions. Specifically, the power control method 200 includes:

[0116] In step S210, the terminal device obtains N path losses on N transmission paths. The N transmission paths are transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

[0117] Exemplarily, each of the N transmission paths includes at least one of the following information: the azimuth departure angle, the zenith departure angle, the Azimuth arrival angle, and the Zenith arrival angle. If relative to a two-dimensional plane, each transmission path may include information about the Azimuth departure angle or the Azimuth arrival angle; if relative to a three-dimensional angular space, each transmission path may include information about both the Azimuth departure angle and the Zenith departure angle, or each transmission path may include information about both the Azimuth arrival angle and the Zenith arrival angle.

[0118] Exemplarily, the terminal device may be any one of the terminal devices 108 or 110 shown in FIG. 1 , and the network device may be the network device 102 shown in FIG. 1 , which is not limited in this application.

[0119] In step S212, the terminal device receives first information from the network device, where the first information indicates a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths. Accordingly, the network device sends the first information to the terminal device.

[0120] Alternatively, the first information may also indicate the beam through which the terminal device sends a signal or the weight of the antenna port through which the terminal device sends a signal, etc., which is not limited in this application. The first information may indicate the beam through which the terminal device sends a signal by means of a beam number, a transmission configuration indication / indicator (TCI), an uplink TCI (UL TCI), a sounding reference signal resource indication (SRI), a transmit precoding matrix indicator (TPMI), etc., which is not limited in this application.

[0121] Step S214: The terminal device determines the power of the signal sent to the network device based on the above-mentioned first information.

[0122] Exemplarily, the terminal device sends a physical uplink shared channel (PUSCH) to the network device in subframe i. The terminal device may determine the power of sending the PUSCH to the network device in subframe i by using the following formula 1:

[0123] Among them, P in the above formula 1 CMAX,c (i) is the maximum transmit power of the terminal device; M PUSCH,c (i) is the bandwidth of the PUSCH resources allocated by the network device to the terminal device in subframe i, and its size is the number of PUSCH resource blocks; P O _ PUSCH,c (j) is the nominal power; α c(j) is the path loss compensation factor. Based on the nominal power, the terminal device also needs to automatically perform power compensation according to the path loss data. The dynamic power control of the terminal device includes implicit power adjustment based on the modulation and coding scheme (MCS) and explicit power adjustment based on the physical downlink control channel (PDCCH). TF,c (i) is the implicit power adjustment based on MCS, f c (i) PDCCH-based display power adjustment. PDCCH display power adjustment can be indicated to the terminal device through TPC.

[0124] The terminal device substitutes the obtained path loss corresponding to each of the N transmission paths into the above formula to obtain the power of the transmitted signal corresponding to the transmission path.

[0125] The terminal device may send a signal to the network device on the first transmission path at the determined power.

[0126] Through the power control method 200 described above, the network device does not need to send PLRS to the terminal device to measure path loss, which can reduce reference signal overhead and thus save resources. In addition, through the control method 200 described above, the terminal device can obtain the transmit power of each transmission path between the terminal device and the network device, which can improve the accuracy of the terminal device's transmit power control.

[0127] Next, the embodiment of the present application can provide two methods for a terminal device to obtain N path losses on N transmission paths, such as method 1 shown in FIG. 3 and method 2 shown in FIG. 4 below.

[0128] First, the first method shown in FIG3 is introduced. The first method includes the following steps:

[0129] In the same step as S310, the network device obtains N path losses on N transmission paths.

[0130] Specifically, the network device can sense N transmission paths between the terminal device and the terminal device based on the terminal device's current location, and determine N path losses along the N transmission paths based on the radio frequency map. For example, the radio frequency map may include information such as signal transmission time, angle, power, and signal strength.

[0131] Alternatively, the terminal device can sense the N transmission paths between the network device and the network device based on the current location of the network device, and measure the reference signal receiving power (RSRP) on the N transmission paths to obtain N RSRPs. The terminal device indicates the N transmission paths and the N RSRPs corresponding to the N transmission paths to the network device, and the network device can determine the N path losses on the N transmission paths accordingly. Exemplarily, the network device can use the transmit power on each transmission path of the N transmission paths minus the RSRP corresponding to the transmission path to obtain the path loss of the transmission path.

[0132] Step S312: The network device sends second information to the terminal device, where the second information is used to indicate N path losses on the N transmission paths.

[0133] Exemplarily, the second information may indicate N path losses on N transmission paths through the following Table 1. For example, each transmission path in the N transmission paths includes an Azimuth departure angle of the transmission path.

[0134] Table 1

[0135] Table 1 shows that the Azimuth departure angle corresponding to transmission path 1 is 10°, and the corresponding path loss of transmission path 1 is 60 dB; the Azimuth departure angle corresponding to transmission path 2 is 45°, and the corresponding path loss of transmission path 2 is 65 dB; the Azimuth departure angle corresponding to transmission path 3 is 55°, and the corresponding path loss of transmission path 3 is 70 dB.

[0136] Step S314: The terminal device determines N path losses on the N transmission paths based on the second information.

[0137] Alternatively, the N transmission paths may be transmission paths between the terminal device and the network device when the terminal device is in the first position. In another embodiment, the network device may further indicate, via second information, M path losses on the M transmission paths to the terminal device. The M transmission paths may be transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M transmission paths correspond one-to-one to the M paths. The network device may further indicate, via second information, multiple transmission paths between the terminal device and the network device when the terminal device is in other positions. This application does not limit this.

[0138] It should be noted that the manner in which the terminal device obtains M path losses on M transmission paths can refer to the manner in which the terminal device obtains N path losses on N transmission paths, which will not be repeated here.

[0139] Illustratively, the second information may indicate the path loss on the transmission path between the terminal device and the network device when the terminal device is at multiple locations through the following Table 2. For example, each of the N transmission paths includes an Azimuth departure angle of the transmission path.

[0140] Table 2

[0141] It can be seen from Table 2 that when the terminal device is in the first position, the Azimuth departure angle corresponding to the transmission path 1 of the network device is 10°, and the path loss corresponding to the transmission path 1 is 60dB; when the terminal device is in the first position, the Azimuth departure angle corresponding to the transmission path 2 of the network device is 45°, and the path loss corresponding to the transmission path 2 is 65dB; when the terminal device is in the second position, the Azimuth departure angle corresponding to the transmission path 1 of the network device is 55°, and the path loss corresponding to the transmission path 1 is 70dB; when the terminal device is in the second position, the Azimuth departure angle corresponding to the transmission path 2 of the network device is 65°, and the path loss corresponding to the transmission path 2 is 80dB.

[0142] Exemplarily, the first position and the second position should be positions in the cell managed by the network device, or in other words, the first position and the second position should be positions where the terminal device can communicate with the network device.

[0143] By pre-configuring the path loss of the terminal device's transmission path at multiple locations, the network device can reduce the number of configurations required by the terminal device during its movement, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0144] Next, the second method shown in FIG4 is introduced. The second method includes the following steps:

[0145] In step S410, the network device sends third information to the terminal device, where the third information is used to indicate a mapping relationship between RSRP and path loss on a transmission path. Accordingly, the terminal device receives the third information from the network device.

[0146] Exemplarily, the third information may indicate a mapping relationship between RSRP and path loss on the transmission path using the following formula 2:

[0147] PL x = Reference Signal Transmit Power - RSRP x +Offset

[0148] The above-mentioned reference signal transmission power and offset can be configured by the network device. The network device can configure the reference signal transmission power and offset for each of the N transmission paths. The network device can also configure the same reference signal transmission power and offset for the N transmission paths. This application does not limit this. x is the RSRP of the xth transmission path among the N transmission paths measured by the terminal device. x is the path loss of the xth transmission path among N transmission paths.

[0149] Optionally, the network device can instruct the terminal device to configure the parameters of the filter (such as the filter order, filter coefficient, etc.) for filtering the path loss obtained by the above formula 2, so that the terminal device can filter the path loss according to the configuration parameters of the filter, thereby improving the accuracy of the path loss estimation.

[0150] In step S412, the terminal device can perceive N transmission paths between the network device and the network device according to the current location of the network device, and measure the RSRP on the N transmission paths to obtain N RSRPs, which correspond one-to-one to the N transmission paths.

[0151] For example, the N RSRPs measured by the terminal device may be as shown in Table 3 below:

[0152] Table 3

[0153] Table 3 shows that the Azimuth departure angle corresponding to transmission path 1 of the terminal device is 10°, and the RSRP of transmission path 1 measured by the terminal device is -50 dB; the Azimuth departure angle corresponding to transmission path 2 of the terminal device is 45°, and the RSRP of transmission path 2 measured by the terminal device is -55 dB; the Azimuth departure angle corresponding to transmission path 3 of the terminal device is 55°, and the RSRP of transmission path 3 measured by the terminal device is -60 dB.

[0154] Step S414: The terminal device determines N path losses on the N transmission paths based on the third information and the N RSRPs.

[0155] For example, the reference signal transmission power configured by the network device for the terminal device is 20 dB and the offset is 0 dB. The N path losses on the N transmission paths determined based on the above formula 2 and the above table 3 are shown in the following table 4:

[0156] Table 4

[0157] It can be seen from Table 4 that the path loss of the transmission path 1 of the terminal device is 70dB; the path loss of the transmission path 1 of the terminal device is 75dB; and the path loss of the transmission path 1 of the terminal device is 80dB.

[0158] The second information in the above-mentioned method 1 may be indicated by the network device using semi-static radio resource control (RRC) signaling or MAC-CE signaling, and the third information in the above-mentioned method 2 may also be indicated by the network device using semi-static RRC signaling or MAC-CE signaling, on this basis. Optionally, the network device may also use DCI (Downlink Control Information) signaling to dynamically send TPC to the terminal device, thereby dynamically adjusting the power of the signal sent by the terminal device. Exemplarily, the period for the network device to dynamically indicate TPC to the terminal device may be less than the period for the network device to semi-statically indicate the second information or the third information to the terminal device.

[0159] Figures 2 through 4 above describe a method for more precisely controlling the power of signals transmitted by a terminal device. Referring to the power control methods of Figures 2 through 4 above, embodiments of the present application also provide a method for more precisely controlling the timing of signals transmitted by a terminal device. A detailed description is provided below.

[0160] In order to allow signals from multiple terminal devices to reach the network device at the same time and help the network device perform demultiplexing, uplink timing advance (TA) is usually performed on the multiple terminal devices. Specifically, the network device performing TA on the uplink transmission of multiple terminal devices usually includes the following steps: multiple terminal devices send uplink signals to the network device; the network device estimates the TA amount of each of the multiple terminal devices based on the uplink signals of the multiple terminal devices; the network device sends a timing advance command (TAC) to each of the multiple terminal devices; each of the multiple terminal devices sends an uplink channel or signal according to the received TAC.

[0161] Currently, the TAC indicated by the network device to the terminal device is determined based on the first path detected by the network device. However, the network device and the terminal device do not necessarily perform subsequent data transmission based on the first path. Therefore, the TAC indicated by the network device has the problem of low accuracy.

[0162] The timing control method provided in this application is similar to the power control method described above. The RSRP in Figures 2 to 4 can be replaced with delay, the path loss in Figures 2 to 4 can be replaced with TA, and the TPC in Figures 2 to 4 can be replaced with TAC.

[0163] Finally, the device embodiment of the embodiment of the present application is introduced.

[0164] To implement the various functions of the methods provided herein, both terminal devices and network devices may include hardware structures and / or software modules, with the aforementioned functions implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0165] Figure 5 is a schematic block diagram of a communication device 500 according to an embodiment of the present application. The communication device 500 includes a processor 510 and a communication interface 520. Optionally, the processor 510 and the communication interface 520 may be interconnected via a bus 530. The communication device 500 may be a terminal device or a network device.

[0166] Optionally, the communication device 500 may further include a memory 540. The memory 540 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM), and is used to store relevant instructions and data.

[0167] The processor 510 may be one or more central processing units (CPUs). In the case where the processor 510 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0168] When the communication apparatus 500 is a terminal device, illustratively, the communication apparatus 500 is configured to perform the following operations: receiving first information from a network device, etc.

[0169] When the communication device 500 is a network device, illustratively, the communication device 500 is used to perform the following operations: sending first information to a terminal device, etc.

[0170] The above contents are merely exemplary descriptions. When the communication device 500 is a network device / terminal device, it will be responsible for executing the methods or steps related to the network device / terminal device in the above method embodiments.

[0171] The above description is merely exemplary. For details, please refer to the contents of the above method embodiments. The implementation of each operation in FIG5 may also correspond to the corresponding description of the method embodiments shown in FIG2 to FIG4.

[0172] Figure 6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. Communication device 600 may be a terminal device or a network device, or a chip or module within the terminal device or network device, configured to implement the methods described in the above embodiments. Communication device 600 includes a transceiver unit 610 and a processing unit 620. The following provides an exemplary description of transceiver unit 610 and processing unit 620.

[0173] The transceiver unit 610 may include a transmitting unit and a receiving unit. The transmitting unit is used to perform the transmitting operation of the communication device 600, and the receiving unit is used to perform the receiving operation of the communication device 600. For ease of description, this embodiment of the application combines the transmitting unit and the receiving unit into a single transceiver unit. This is described here as a unified description and will not be repeated later.

[0174] When the communication apparatus 600 is a terminal device, illustratively, the transceiver unit 610 is configured to receive first information from a network device, and the processing unit 620 is configured to determine the power of a signal sent to the network device based on the first information.

[0175] When the communication device 600 is a network device, illustratively, the transceiver unit 610 is configured to send the first information to the terminal device.

[0176] The above contents are merely exemplary descriptions. When the communication device 600 is a terminal device or a network device, it will be responsible for executing the methods or steps related to the terminal device or the network device in the above method embodiments.

[0177] Optionally, the communication device 600 further includes a storage unit 630, which is used to store a program or code for executing the aforementioned method.

[0178] The device embodiments shown in Figures 5 and 6 are used to implement the contents described in Figures 2 to 4. The specific execution steps and methods of the devices shown in Figures 5 and 6 can refer to the contents described in the above method embodiments.

[0179] Figure 7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application. The communication device 700 is used to implement the functions of a network device / terminal device. The communication device 700 may be a chip in the network device / terminal device.

[0180] Communication device 700 includes an input / output interface 720 and a processor 710. The input / output interface 720 may be an input / output circuit. The processor 710 may be a signal processor, a chip, or other integrated circuit capable of implementing the method of the present application. The input / output interface 720 is used for inputting or outputting signals or data.

[0181] For example, when the communication apparatus 700 is a terminal device, the input / output interface 720 is configured to receive first information from a network device, and the processor 710 is configured to determine the power of a signal sent to the network device based on the first information.

[0182] For example, when the communication device 700 is a network device, the input / output interface 720 is used to send the first information to the terminal device.

[0183] In one possible implementation, the processor 710 implements the functions implemented by the network device or the terminal device by executing instructions stored in the memory.

[0184] Optionally, the communication device 700 further includes a memory.

[0185] Optionally, the processor and memory are integrated together.

[0186] Optionally, the memory is outside the communication device 700 .

[0187] In one possible implementation, the processor 710 may be a logic circuit that inputs / outputs messages or signals through the input / output interface 720. The logic circuit may be a signal processor, a chip, or other integrated circuit that can implement the method of the embodiment of the present application.

[0188] The above description of the communication device 700 is only an exemplary description. The communication device 700 can be used to execute the method described in the above embodiments. For specific content, please refer to the description of the above method embodiments, which will not be repeated here.

[0189] The present application also provides a chip, including a processor, for calling and executing instructions stored in a memory from the memory, so that a communication device equipped with the chip executes the methods in the above examples.

[0190] The present application also provides a chip, comprising: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is configured to execute code in a memory. When the code is executed, the processor is configured to execute the methods in the above examples. Optionally, the chip also includes a memory, which is configured to store computer programs or code.

[0191] The present application also provides a processor for coupling with a memory, and for executing the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0192] The present application provides a computer program product comprising instructions. When the computer program product is run on a computer, the method of the aforementioned embodiment is implemented.

[0193] The present application also provides a computer program. When the computer program is executed in a computer, the method of the aforementioned embodiment is implemented.

[0194] The present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0195] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0196] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0197] In the several embodiments provided in this application, the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0198] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the technical solutions of the embodiments of the present application.

[0199] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0200] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of each method embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0201] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A power control method, characterized in that: The method comprises: Acquire N path losses on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths; receiving first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths; determining the power of sending a signal to the network device based on the first information, Wherein, N is a positive integer greater than or equal to 1.

2. The method according to claim 1, characterized in that The method further comprises: receiving second information from the network device, where the second information is used to indicate the N path losses on the N transmission paths; The obtaining of N path losses on N transmission paths includes: The N path losses on the N transmission paths are determined based on the second information.

3. The method according to claim 2, characterized in that The N transmission paths are transmission paths between the terminal device and the network device, including: the N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, The second information is further used to indicate M path losses on M transmission paths, where the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M path losses correspond one-to-one to the M transmission paths. Wherein, M is a positive integer greater than or equal to 1.

4. The method according to claim 1, characterized in that The method further comprises: receiving third information from the network device, where the third information is used to indicate a mapping relationship between a reference signal received power RSRP and a path loss on a transmission path; Measuring RSRPs on the N transmission paths to obtain N RSRPs, where the N RSRPs correspond one-to-one to the N transmission paths; The obtaining of N path losses on N transmission paths includes: The N path losses on the N transmission paths are determined based on the third information and the N RSRPs.

5. The method according to any one of claims 1 to 4, characterized in that Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

6. A power control method, characterized in that: The method comprises: Acquire N path losses on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths; Sending second information to the terminal device, where the second information is used to indicate the N path losses on the N transmission paths; sending first information to the terminal device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths, and the first information is used by the terminal device to determine the power of the sent signal, Wherein, N is a positive integer greater than or equal to 1.

7. The method according to claim 6, characterized in that The N transmission paths are transmission paths between the terminal device and the network device, including: the N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, The second information is further used to indicate M path losses on M transmission paths, where the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is at the second location. Wherein, M is a positive integer greater than or equal to 1.

8. The method according to claim 6 or 7, characterized in that: Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

9. A power control method, characterized in that: The method comprises: Sending third information to the terminal device, wherein the third information is used to indicate a mapping relationship between a reference signal received power RSRP and a path loss on a transmission path, wherein the third information is used by the terminal device to determine N path losses on N transmission paths, wherein the N transmission paths are transmission paths between the terminal device and a network device, and the N path losses correspond one-to-one to the N transmission paths.

10. The method according to claim 9, characterized in that Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

11. A timing control method, characterized in that: The method comprises: Acquire N timing advances TAs on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths; receiving first information from the network device, where the first information is used to indicate a first transmission path for the terminal device to send a signal, where the first transmission path belongs to the N transmission paths; determining a time to send a signal to the network device based on the first information, Wherein, N is a positive integer greater than or equal to 1.

12. The method according to claim 11, characterized in that The method further comprises: receiving fourth information from the network device, where the fourth information is used to indicate the N TAs on the N transmission paths; The acquiring N TAs on the N transmission paths includes: determining the N TAs on the N transmission paths based on the fourth information.

13. The method according to claim 12, characterized in that The N transmission paths are transmission paths between the terminal device and the network device, including: the N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, The fourth information is further used to indicate M TAs on M transmission paths, where the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M TAs correspond one-to-one to the M transmission paths. Wherein, M is a positive integer greater than or equal to 1.

14. The method according to claim 11, characterized in that The method further comprises: receiving fifth information from the network device, where the fifth information is used to indicate a mapping relationship between a delay and a TA on a transmission path; receiving sixth information from the network device, the sixth information being used to indicate N time delays on the N transmission paths, the N time delays corresponding one-to-one to the N transmission paths; The acquiring N TAs on the N transmission paths includes: determining the N TAs on the N transmission paths based on the fifth information and the sixth information.

15. The method according to any one of claims 11 to 14, characterized in that Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

16. A timing control method, characterized in that: The method comprises: Acquire N timing advances TAs on N transmission paths, where the N transmission paths are transmission paths between a terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths; Sending fourth information to the terminal device, where the fourth information is used to indicate N TAs on the N transmission paths; sending first information to the terminal device, the first information being used to indicate a first transmission path for the terminal device to send a signal, the first transmission path belonging to the N transmission paths, and the first information being used by the terminal device to determine a time to send a signal, Wherein, N is a positive integer greater than or equal to 1.

17. The method according to claim 16, characterized in that The N transmission paths are transmission paths between the terminal device and the network device, including: the N transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the first position, The fourth information is further used to indicate M TAs on M transmission paths, where the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is in the second position, and the M TAs correspond one-to-one to the M transmission paths. Wherein, M is a positive integer greater than or equal to 1.

18. The method according to claim 16 or 17, characterized in that Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

19. A timing control method, characterized in that: The method comprises: Send fifth information to the terminal device, wherein the fifth information is used to indicate a mapping relationship between a delay and a timing advance TA on a transmission path, and the fifth information is used by the terminal device to determine N TAs on N transmission paths, wherein the N transmission paths are transmission paths between the terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths.

20. The method according to claim 19, characterized in that Each of the N transmission paths includes at least one of the following information: Azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

21. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, The communication device is caused to perform the method as described in any one of claims 1 to 5, or the communication device is caused to perform the method as described in any one of claims 6 to 10, or the communication device is caused to perform the method as described in any one of claims 11 to 15, or the communication device is caused to perform the method as described in any one of claims 16 to 20.

22. The communication device according to claim 21, characterized in that The communication device further comprises a memory for storing the computer program or instructions.

23. The communication device according to claim 21, characterized in that The communication device further comprises a communication interface, and the communication interface is used for inputting and / or outputting signals.

24. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program or instruction. When the computer program or instruction is executed on a computer, The method of any one of claims 1 to 5 is performed, or the method of any one of claims 6 to 10 is performed, or the method of any one of claims 11 to 15 is performed, or the method of any one of claims 16 to 20 is performed.

25. A computer program product, characterized in that Contains instructions that, when executed on a computer, The method of any one of claims 1 to 5 is performed, or the method of any one of claims 6 to 10 is performed, or the method of any one of claims 11 to 15 is performed, or the method of any one of claims 16 to 20 is performed.

26. A communication system, characterized in that: The communication system includes a terminal device and a network device. The terminal device is used to execute the method described in any one of claims 1 to 5, or the terminal device is used to execute the method described in any one of claims 11 to 15; the network device is used to execute the method described in any one of claims 6 to 10, or the network device is used to execute the method described in any one of claims 16 to 20.

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