Communication method and communication device

Abstract

The invention provides a communication method and device, and the method comprises the steps that terminal equipment can obtain N path losses on N transmission paths communicating with network equipment, the network equipment indicates a transmission path for transmitting an uplink signal to the terminal equipment, and the terminal equipment can determine the power for transmitting the uplink signal based on the indication of the network equipment. According to the method, the network equipment does not need to send the PLRS to the terminal equipment to measure the path loss, so that the overhead of the reference signal can be reduced. Moreover, the terminal equipment can obtain the path loss corresponding to the plurality of paths communicating with the network equipment, so that the accuracy of the uplink signal sending power of the terminal equipment can be improved.

Description

Technical Field

[0001] This application relates to the field of communication technologies. More specifically, it relates to a communication method and a communication device. Background Art

[0002] In order to resist the interference that may be generated by the uplink transmission of a terminal device and to help the terminal device save energy, power control of the uplink transmission is usually performed. Specifically, the network device's control of the uplink transmission power of the terminal device generally includes the following steps: The network device sends a path loss 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 transmission power based on the measurement result of the terminal device; the network device sends a transmit power control (TPC) command to the terminal device, and this TPC indicates the power for the terminal device to send an uplink channel or signal; the terminal device sends the uplink channel or signal based on this TPC.

[0003] Currently, the path loss measured by the terminal device is the overall path loss of the signal transmission between the network device and the terminal device. Or rather, 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 power of the signal sent by the terminal device is not accurate. Summary of the Invention

[0004] This application provides a communication method and a communication device, which can improve the power accuracy of the signal sent by the terminal device.

[0005] In a first aspect, a power control method is provided. This method can be executed by a terminal device, or by a module (such as a chip or a circuit) in the terminal device, or by a logical node, a logical module, or software that can implement all or part of the functions of the terminal device. This application does not make any limitations in this regard.

[0006] The method includes: The terminal device obtains N path losses on N transmission paths, where the N transmission paths are the transmission paths between the terminal device and the 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, and this first information is used to indicate a first transmission path for the terminal device to send a signal, and this first transmission path belongs to the above N transmission paths; the terminal device determines the power for sending a signal to the network device based on this first information, where N is a positive integer greater than or equal to 1.

[0007] Through the above method, the network device does not need to send PLRS to the terminal device to measure the path loss, which can reduce the overhead of reference signals. Moreover, the terminal device can obtain the path losses corresponding to multiple paths for communicating with the network device, so the accuracy of the power of the uplink signal sent by the terminal device can be improved.

[0008] In combination with the first aspect, in some implementation manners of the first aspect, the above method further includes: The terminal device receives second information from the network device, and the second information is used to indicate the N path losses on the above N transmission paths; The terminal device obtaining the N path losses on the N transmission paths includes: The terminal device determines the N path losses on the N transmission paths based on the second information.

[0009] In combination with the first aspect, in some implementation manners of the first aspect, the above N transmission paths are the transmission paths between the terminal device and the network device, including: The above N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the first position, and the second information is further used to indicate the M path losses on the M transmission paths, and the M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the second position, and the M path losses correspond to the M transmission paths one by one, where M is a positive integer greater than or equal to 1.

[0010] Through the above method, the network device can reduce the multiple configurations during the movement of the terminal device by pre-configuring the path losses of the transmission paths of the terminal device at multiple positions, thereby reducing the signaling overhead and enhancing the mobility of the terminal device.

[0011] In combination with the first aspect, in some implementation manners of the first aspect, the above method further includes: The terminal device receives third information from the network device, and the third information is used to indicate the mapping relationship between the RSRP and the path loss on the transmission path; The terminal device measures the RSRP on the above N transmission paths to obtain N RSRPs, and the N RSRPs correspond to the above N transmission paths one by one; The terminal device obtaining the N path losses on the N transmission paths includes: The terminal device determines the N path losses on the N transmission paths based on the third information and the N RSRPs.

[0012] It should be understood that the above second information is equivalent to the network device explicitly indicating the N path losses on the above N transmission paths to the terminal device, and the above third information is equivalent to the network device implicitly indicating the N path losses on the above N transmission paths to the terminal device.

[0013] Exemplarily, the above second information and / or the above third information may be indicated by the network device using semi-static radio resource control (RRC) signaling or MAC-CE signaling to the terminal device, and this application does not limit this.

[0014] Specifically, each of the above N transmission paths includes at least one of the following pieces of information:

[0015] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0016] In a second aspect, a power control method is provided. This method can be executed by a network device, or by a module (such as a chip or a circuit) in the network device, or by a logical node, a logical module, or software that can implement all or part of the functions of the network device. This application does not make any restrictions in this regard.

[0017] The method includes: The network device obtains N path losses on N transmission paths, where the N transmission paths are the transmission paths between the 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, and the second information is used to indicate the above N path losses on the above N transmission paths; the network device sends first information to the terminal device, and the first information is used to indicate the first transmission path for the terminal device to send a signal, and the first transmission path belongs to the above N transmission paths, and the first information is used for the terminal device to determine the power of the signal to be sent, where N is a positive integer greater than or equal to 1.

[0018] Through the above method, the network device does not need to send PLRS to the terminal device to measure the path loss, which can reduce the overhead of reference signals. Moreover, the terminal device can obtain the path losses corresponding to multiple paths for communicating with the network device, so the accuracy of the power of the terminal device sending the uplink signal can be improved.

[0019] Combined with the second aspect, in some implementation manners of the second aspect, the above N transmission paths are the transmission paths between the terminal device and the network device, including: the above N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the first position, and the second information is further used to indicate M path losses on M transmission paths, where the M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the second position, where M is a positive integer greater than or equal to 1.

[0020] Through the above method, the network device can reduce the multiple configurations during the movement of the terminal device by pre-configuring the path losses of the transmission paths of the terminal device at multiple positions, thereby reducing the signaling overhead and enhancing the mobility of the terminal device.

[0021] Specifically, each of the above N transmission paths includes at least one of the following pieces of information:

[0022] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0023] In a third aspect, a power control method is provided. This method can be executed by a network device, or by a module (such as a chip or a circuit) in the network device, or by a logical node, logical module, or software that can implement all or part of the functions of the network device. This application does not make any limitations in this regard.

[0024] The method includes: The network device sends third information to the terminal device. This third information is used to indicate the mapping relationship between the RSRP and the path loss on the transmission path. This third information is used by the terminal device to determine N path losses on N transmission paths. The N transmission paths are the transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

[0025] Through the above method, the network device does not need to send PLRS to the terminal device to measure the path loss, which can reduce the overhead of reference signals. Moreover, the terminal device can obtain the path losses corresponding to multiple paths for communicating with the network device. Therefore, the accuracy of the power of the uplink signal sent by the terminal device can be improved.

[0026] Specifically, each of the above N transmission paths includes at least one of the following items of information:

[0027] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0028] In a fourth aspect, a timing control method is provided. This method can be executed by a terminal device, or by a module (such as a chip or a circuit) in the terminal device, or by a logical node, logical module, or software that can implement all or part of the functions of the terminal device. This application does not make any limitations in this regard.

[0029] The method includes: The terminal device obtains N timing advances (TAs) on N transmission paths. 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; The terminal device receives first information from the network device. This first information is used to indicate the first transmission path for the terminal device to send a signal. The first transmission path belongs to the above N transmission paths; The terminal device determines the time to send a signal to the network device based on this first information, where N is a positive integer greater than or equal to 1.

[0030] Through the above method, the terminal device does not need to send an uplink signal to the network device to estimate the timing advance of the terminal device, which can reduce the overhead of the uplink signal. Moreover, the terminal device can obtain the timing advances corresponding to multiple paths for communicating with the network device, so the accuracy of the timing for the terminal device to send the uplink signal can be improved.

[0031] Combined with the fourth aspect, in some implementation manners of the fourth aspect, the above method further includes: The terminal device receives fourth information from the network device, where the fourth information is used to indicate N timing advances (TAs) on N transmission paths; The terminal device obtaining N TAs on N transmission paths includes: The terminal device determines the N TAs on the N transmission paths based on the fourth information.

[0032] Exemplarily, the above fourth information can indicate the N TAs on the N transmission paths through Table 5 below. For example, each of the N transmission paths includes the azimuth departure angle of the transmission path.

[0033] Table 5

[0034] Index number of the transmission path Azimuth departure angle (°) TA (Ts) 1 10 300 2 45 550 3 55 780 … … …

[0035] 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.

[0036] Combined with the fourth aspect, in some implementation manners of the fourth aspect, the above N transmission paths are the transmission paths between the terminal device and the network device, including: The above N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the first position, and the fourth information is further used to indicate M TAs on M transmission paths, where the M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at 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.

[0037] Exemplarily, the above fourth information can indicate the TAs on the transmission paths between the terminal device and the network device at multiple positions through Table 6 below. For example, each of the N transmission paths includes the azimuth departure angle of the transmission path.

[0038] Table 6

[0039] Location of the terminal device Index number of the transmission path Azimuth departure angle (°) TA (Ts) First location 1 10 300 First location 2 45 550 Second location 1 55 780 Second location 2 65 350 … … … …

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

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

[0042] Through the above method, the network device can reduce the multiple configurations during the movement of the terminal device by pre-configuring the timing advance of the transmission paths of the terminal device at multiple positions, thereby reducing the signaling overhead and enhancing the mobility of the terminal device.

[0043] Combined with the fourth aspect, in some implementation manners of the fourth aspect, the above method further includes: the terminal device receives fifth information from the network device, where 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, where the sixth information is used to indicate N delays on N transmission paths, and the N delays correspond to the N transmission paths one by one; the above terminal device obtains N TAs on 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 above fourth information is equivalent to the network device explicitly indicating the N TAs on the above N transmission paths to the terminal device, and the above fifth information is equivalent to the network device implicitly indicating the N TAs on the above N transmission paths to the terminal device.

[0045] Exemplarily, the above fifth information can indicate the mapping relationship between the delay and the TA on the transmission path through the following formula 3:

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

[0047] Among them, the above Y value and offset can be configured by the network device. The network device can configure respective Y values and offsets for N transmission paths, or the network device can also configure the same Y value and offset for the N transmission paths uniformly. This application does not make any limitation in this regard. The above delay x is the delay of the x-th transmission path among the N transmission paths indicated by the network device to the terminal device through the sixth information. The above TA x is the timing advance of the x-th transmission path among the N transmission paths.

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

[0049] Table 7

[0050]

[0051]

[0052] It can be seen from Table 7 that the Azimuth departure angle corresponding to 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 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 transmission path 3 of the terminal device is 55°, and the delay indicated by the network device is 350Ts.

[0053] Exemplarily, the Y value configured by the network device for the terminal device is 2, and the offset is 0. The N TAs on the N transmission paths determined based on the above formula 3 and Table 7 above are shown in Table 4 below:

[0054] Table 8

[0055] Index number of the transmission path Azimuth departure angle (°) TA (Ts) 1 10 2*150＝300 2 45 2*250＝500 3 55 2*350＝700 … … …

[0056] It can be seen from Table 8 that the TA of transmission path 1 of the terminal device is 300Ts; the TA of transmission path 1 of the terminal device is 500Ts; the TA of transmission path 1 of the terminal device is 700Ts.

[0057] Exemplarily, the above fifth information and the above sixth information can be carried in the same message or in different messages. This application does not make any limitation in this regard.

[0058] Exemplarily, the above fourth information and / or the above fifth information can be indicated by the network device to the terminal device using semi-static RRC signaling or MAC-CE signaling. This application does not make any limitation in this regard.

[0059] Specifically, each of the above N transmission paths includes at least one of the following pieces of information:

[0060] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0061] In a fifth aspect, a timing control method is provided. This method can be executed by a network device, or by a module (such as a chip or a circuit) in the network device, or by a logical node, logical module, or software that can implement all or part of the functions of the network device. This application does not make any limitations in this regard.

[0062] The method includes: The network device obtains N timing advances (TAs) on N transmission paths. The N transmission paths are the transmission paths between the terminal device and the network device, and the N TAs correspond to the N transmission paths one by one; The network device sends fourth information to the terminal device. 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. The first information is used to indicate the first transmission path for the terminal device to send a signal. The first transmission path belongs to the above N transmission paths. The first information is used for the terminal device to determine the time to send a signal, where N is a positive integer greater than or equal to 1.

[0063] Through the above method, the terminal device does not need to send an uplink signal to the network device to estimate the timing advance of the terminal device, which can reduce the overhead of the uplink signal. Moreover, the terminal device can obtain the timing advances corresponding to multiple paths for communicating with the network device, so the accuracy of the timing for the terminal device to send an uplink signal can be improved.

[0064] Combined with the fifth aspect, in some implementation manners of the fifth aspect, the above N transmission paths are the transmission paths between the terminal device and the network device, including: The above N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the first position. The fourth information is further used to indicate the M TAs on M transmission paths. The M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at the second position, where M is a positive integer greater than or equal to 1.

[0065] Through the above method, by pre-configuring the timing advances of the transmission paths of the terminal device at multiple positions, the network device can reduce the multiple configurations during the movement of the terminal device, thereby reducing the signaling overhead and enhancing the mobility of the terminal device.

[0066] Specifically, each of the above N transmission paths includes at least one of the following pieces of information:

[0067] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0068] In a sixth aspect, a timing control method is provided. This method can be executed by a network device, or by a module (such as a chip or a circuit) in the network device, or by a logical node, logical module, or software that can implement all or part of the functions of the network device. This application does not make any limitations in this regard.

[0069] The method includes: The network device sends fifth information to the terminal device. The fifth information is used to indicate the mapping relationship between the time delay and the TA on the transmission path. The fifth information is used for the terminal device to determine N TAs on N transmission paths. The N transmission paths are the transmission paths between the terminal device and the network device, and the N TAs correspond to the N transmission paths one by one.

[0070] In combination with the sixth aspect, in some implementation manners of the sixth aspect, the above method further includes: The network device sends sixth information to the terminal device. The sixth information is used to indicate N time delays on the above N transmission paths. The N time delays correspond to the N transmission paths one by one. The sixth information is used for the terminal device to determine N TAs on N transmission paths.

[0071] Through the above method, the terminal device does not need to send an uplink signal to the network device to estimate the timing advance of the terminal device, which can reduce the overhead of the uplink signal. And the terminal device can obtain the timing advance corresponding to multiple paths for communicating with the network device. Therefore, the accuracy of the timing for the terminal device to send the uplink signal can be improved.

[0072] Specifically, each of the above N transmission paths includes at least one of the following items of information:

[0073] Azimuth departure angle, Zenith departure angle, Azimuth arrival angle, Zenith arrival angle.

[0074] In a seventh aspect, a power control device is provided. The device includes: a processing unit, configured to obtain N path losses on N transmission paths. The N transmission paths are the transmission paths between the terminal device and the network device, and the N path losses correspond to the N transmission paths one by one; the device further includes: a transceiver unit, configured to receive first information from the network device. The first information is used to indicate a first transmission path for the terminal device to send a signal. The first transmission path belongs to the above N transmission paths; the above processing unit is further configured to determine the power for sending a signal to the network device based on the first information, where N is a positive integer greater than or equal to 1.

[0075] In combination with the seventh aspect, in some implementations of the seventh aspect, the above-mentioned transceiver unit is further configured to receive second information from a network device, where the second information is used to indicate the N path losses on the above-mentioned N transmission paths; the above-mentioned processing unit is configured to obtain the N path losses on the N transmission paths, including: the above-mentioned processing unit is configured to determine the N path losses on the N transmission paths based on the second information.

[0076] In combination with the seventh aspect, in some implementations of the seventh aspect, the above-mentioned N transmission paths are transmission paths between a terminal device and a 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 at a first position, the second information is further used to indicate the M path losses on the M transmission paths, the M transmission paths are transmission paths between the terminal device and the network device when the terminal device is at a second position, and the M path losses correspond one-to-one to the M transmission paths, where M is a positive integer greater than or equal to 1.

[0077] In combination with the seventh aspect, in some implementations of the seventh aspect, the above-mentioned transceiver unit is further configured to receive third information from a network device, where the third information is used to indicate the mapping relationship between the RSRP and the path loss on the transmission path; the above-mentioned processing unit is further configured 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 configured to obtain the N path losses on the N transmission paths, including: the above-mentioned processing unit is configured to determine the N path losses on the N transmission paths based on the third information and the N RSRPs.

[0078] In an eighth aspect, a power control device is provided, and the device includes: a processing unit configured 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 further includes: a transceiver unit configured to send second information to the terminal device, where the second information is used to indicate the N path losses on the above-mentioned N transmission paths; the above-mentioned transceiver unit is further configured 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, 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 power for sending the signal, where N is a positive integer greater than or equal to 1.

[0079] In combination with the eighth aspect, in some implementations of the eighth aspect, the above-mentioned N transmission paths are transmission paths between a terminal device and a 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 at a first position, the second information is further used to indicate the 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 at a second position, where M is a positive integer greater than or equal to 1.

[0080] In a ninth aspect, a power control device is provided. The device includes a transceiver unit configured to send third information to a terminal device. The third information is used to indicate a mapping relationship between the RSRP and the path loss on a transmission path. The third information is used for the terminal device to determine N path losses on N transmission paths, where the N transmission paths are the transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

[0081] In a tenth aspect, a timing control device is provided. The device includes a processing unit configured to obtain N timing advances (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. The device further includes a transceiver unit configured to receive first information from the network device. 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 N transmission paths. The above processing unit is further configured 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.

[0082] In combination with the tenth aspect, in some implementation manners of the tenth aspect, the above transceiver unit is further configured to receive fourth information from the network device. The fourth information is used to indicate N TAs on N transmission paths. The processing unit is configured to obtain N TAs on N transmission paths, including: the processing unit is configured to determine the N TAs on the N transmission paths based on the fourth information.

[0083] In combination with the tenth aspect, in some implementation manners of the tenth aspect, the above N transmission paths are the transmission paths between the terminal device and the network device, including: the above N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at a first position. The fourth information is further used to indicate M TAs on M transmission paths, where the M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at a 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.

[0084] In combination with the tenth aspect, in some implementation manners of the tenth aspect, the above transceiver unit is further configured to receive fifth information from the network device. The fifth information is used to indicate a mapping relationship between the delay and the TA on a transmission path. The transceiver unit is further configured to receive sixth information from the network device. 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 processing unit is configured to obtain N TAs on N transmission paths, including: the processing unit is configured to determine the N TAs on the N transmission paths based on the fifth information and the sixth information.

[0085] In an eleventh aspect, a timing control device is provided. The device includes: a processing unit configured to obtain N timing advances (TAs) on N transmission paths, where the N transmission paths are the 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 further includes: a transceiver unit configured to send 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 further configured 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, 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 the signal, where N is a positive integer greater than or equal to 1.

[0086] In combination with the eleventh aspect, in some implementation manners of the eleventh aspect, the above-mentioned N transmission paths are the transmission paths between a terminal device and a network device, including: the above-mentioned N transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at a first position, and the fourth information is further used to indicate M TAs on M transmission paths, where the M transmission paths are the transmission paths between the terminal device and the network device when the terminal device is at a second position, where M is a positive integer greater than or equal to 1.

[0087] In a twelfth aspect, a timing control device is provided. The device includes: a transceiver unit configured to send fifth information to the terminal device, where the fifth information is used to indicate the mapping relationship between the time delay and the TA on the transmission path, and the fifth information is used for the terminal device to determine N TAs on N transmission paths, where the N transmission paths are the transmission paths between a terminal device and a network device, and the N TAs correspond one-to-one to the N transmission paths.

[0088] In combination with the twelfth aspect, in some implementation manners of the twelfth aspect, the above-mentioned transceiver unit is further configured to send sixth information to the terminal device, where the sixth information is used to indicate N time delays on the above-mentioned N transmission paths, the N time delays correspond one-to-one to the above-mentioned N transmission paths, and the sixth information is used for the terminal device to determine N TAs on the N transmission paths.

[0089] In a thirteenth aspect, a communication device is provided, including a processor, where the processor is configured to, by executing a computer program or instruction or through a logic circuit, cause the communication device to execute the method described in the first aspect and any possible manner of the first aspect or cause the communication device to execute the method described in the second aspect and any possible manner of the second aspect or cause the communication device to execute the method described in the third aspect and any possible manner of the third aspect or cause the communication device to execute the method described in the fourth aspect and any possible manner of the fourth aspect or cause the communication device to execute the method described in the fifth aspect and any possible manner of the fifth aspect or cause the communication device to execute the method described in the sixth aspect and any possible manner of the sixth aspect.

[0090] In a possible implementation, the communication device further includes a memory for storing the computer program or instructions.

[0091] In a possible implementation, the communication device further includes a communication interface for inputting and / or outputting signals.

[0092] In a fourteenth aspect, a communication device is provided, including a logic circuit and an input / output interface. The input / output interface is used for inputting and / or outputting signals, and the logic circuit is configured to execute the method described in the first aspect and any possible implementation of the first aspect, or execute the method described in the second aspect and any possible implementation of the second aspect, or execute the method described in the third aspect and any possible implementation of the third aspect, or execute the method described in the fourth aspect and any possible implementation of the fourth aspect, or execute the method described in the fifth aspect and any possible implementation of the fifth aspect, or execute the method described in the sixth aspect and any possible implementation of the sixth aspect.

[0093] In a fifteenth aspect, a computer-readable storage medium is provided. A computer program or instructions are stored on the computer-readable storage medium. When the computer program or the instructions are run on a computer, the method described in the first aspect and any possible implementation of the first aspect is caused to be executed, or the method described in the second aspect and any possible implementation of the second aspect is caused to be executed, or the method described in the third aspect and any possible implementation of the third aspect is caused to be executed, or the method described in the fourth aspect and any possible implementation of the fourth aspect is caused to be executed, or the method described in the fifth aspect and any possible implementation of the fifth aspect is caused to be executed, or the method described in the sixth aspect and any possible implementation of the sixth aspect is caused to be executed.

[0094] In a sixteenth aspect, a computer program product is provided, including instructions. When the instructions are run on a computer, the method described in the first aspect and any possible implementation of the first aspect is caused to be executed, or the method described in the second aspect and any possible implementation of the second aspect is caused to be executed, or the method described in the third aspect and any possible implementation of the third aspect is caused to be executed, or the method described in the fourth aspect and any possible implementation of the fourth aspect is caused to be executed, or the method described in the fifth aspect and any possible implementation of the fifth aspect is caused to be executed, or the method described in the sixth aspect and any possible implementation of the sixth aspect is caused to be executed.

[0095] In a seventeenth aspect, a communication system is provided. The communication system 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 possible implementation of the first aspect, or is used to execute the method described in the above-mentioned fourth aspect and any possible implementation of the fourth aspect. The network device is used to execute the method described in the above-mentioned second aspect and any possible implementation of the second aspect, or is used to execute the method described in the above-mentioned third aspect and any possible implementation of the third aspect, or is used to execute the method described in the above-mentioned fifth aspect and any possible implementation of the fifth aspect, or is used to execute the method described in the above-mentioned sixth aspect and any possible implementation of the sixth aspect.

[0096] For the description of the beneficial effects of the seventh aspect to the seventeenth aspect, reference can be made to the description of the first aspect to the sixth aspect. Description of the Drawings

[0097] Figure 1 FIG. 100 is a schematic diagram of an architecture applicable to the communication system of the embodiments of the present application.

[0098] Figure 2 FIG. 200 is a schematic flowchart of a power control method provided by an embodiment of the present application.

[0099] Figure 3 FIG. 200 is another schematic flowchart of the power control method provided by an embodiment of the present application.

[0100] Figure 4 FIG. 200 is still another schematic flowchart of the power control method provided by an embodiment of the present application.

[0101] Figure 5 FIG. 500 is a schematic block diagram of a communication device applicable to an embodiment of the present application.

[0102] Figure 6 FIG. 600 is a schematic block diagram of a communication device applicable to an embodiment of the present application.

[0103] Figure 7 FIG. 700 is a schematic block diagram of a communication device applicable to an embodiment of the present application. Detailed Embodiments

[0104] First, the communication system applicable to the embodiments of the present application will be described.

[0105] 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), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Non-Terrestrial Network (NTN) communication system, 5th generation (5G) system or New Radio (NR), and future communication systems, for example, 6th generation (6G) system.

[0106] In the embodiments of the present application, the network device is an access device for a terminal device to access a mobile communication system wirelessly. For example, it includes an access network (AN) device, such as a base station. The network device can also refer to a device that communicates with the terminal device over the air interface. The network device may include an evolved Node B (also simply referred to as eNB or e-NodeB) in an LTE system or a long term evolution-advanced (LTE-A) system; 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, a vehicle-mounted 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, etc. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0107] In addition, the base station in the embodiments of the present application may include a centralized unit (CU) and a distributed unit (DU), and multiple DUs may be centrally controlled by one CU. The CU and DU may 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 PDCP, such as the radio link control (RLC) layer and the medium access control (MAC) layer, etc., are set in the DU. It should be noted that this division of protocol layers is only an example, and other protocol layer divisions are also possible. The radio frequency device can be remotely located and not placed in the DU, or can be integrated in the DU, or partially remotely located and partially integrated in the DU. The embodiments of the present application do not impose any restrictions. In addition, in some embodiments, the control plane (CP) and user plane (UP) of the CU can also be separated and implemented as different entities, 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 and transparently transmit the signaling to the UE or CU without parsing it through the protocol layer. In this network architecture, the CU is classified as a network device on the radio access network (RAN) side. In addition, the CU can also be classified as a network device on the core network (CN) side. The present application does not limit this.

[0108] 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).

[0109] In the embodiments of the present application, the 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 a user equipment (UE), and is 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, things, machines, etc., and can be widely used in various scenarios, such as including 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 wearables, smart transportation, smart city, drones, robots, and other scenarios of terminal devices. For example, the terminal device may be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, a VR terminal, an AR terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a smart speaker in an IoT network, a wireless terminal device in remote medical, 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. By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. A wearable device may also be referred to as a wearable intelligent device or a smart wearable device, etc., and is a general term for devices developed by applying wearable technologies to intelligently design daily wearables, such as glasses, gloves, watches, clothing, and shoes. And for various terminal devices introduced above, if they are located on a vehicle (for example, placed inside or installed inside a vehicle), they can all be considered as in-vehicle terminal devices. An in-vehicle terminal device is also referred to as an on-board unit (OBU), for example. The terminal device of the present application may also be an in-vehicle module, an in-vehicle module group, an in-vehicle component, an in-vehicle chip, or an in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the method of the present application through the built-in in-vehicle module, in-vehicle module group, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0110] In the embodiments 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 a memory (also referred to as main memory). The operating system can be any one or more computer operating systems that implement service processing through processes. For example, the Linux operating system, the Unix operating system, the Android operating system, the iOS operating system, or the Windows operating system, etc. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application. As long as it can communicate according to the method provided by the embodiments of the present application by running a program recording the code of the method provided by the embodiments of the present application. For example, the execution subject of the method provided by the embodiments 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 and execute the program.

[0111] In addition, various aspects or features of the present application can be implemented as a method, an apparatus, or an article of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in the present application covers a computer program accessible from any computer-readable device, carrier, or medium. For example, the computer-readable medium can include, but is not limited to: magnetic storage devices (such as hard disks, floppy disks, or magnetic tapes, etc.), optical discs (such as compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (such as erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0112] Figure 1 is a schematic diagram of a system 100 that can apply the communication method of the embodiments of the present application. As Figure 1As shown, the system 100 includes a network device 102 and terminal devices 104, 106, 108, and 110. The network device 102 may include one antenna or multiple antennas to communicate with the terminal devices 104, 106, 108, and 110. Additionally, the network device 102 may additionally include a transmitter chain and a receiver chain, which can be understood by those of ordinary skill in the art to each include multiple components related to signal transmission and reception (such as a processor, modulator, multiplexer, demodulator, demultiplexer, or antenna, etc.).

[0113] The network device 102 can communicate with multiple terminal devices (such as terminal devices 104, 106, 108, and 110). However, it can be understood that the network device 102 can communicate with any number of terminal devices similar to terminal device 104 or terminal device 106 or terminal device 108 or terminal device 110.

[0114] As Figure 1 shown, when the network device 102 communicates with a terminal device, the signal can be transmitted in a straight line or through the reflection of an obstacle. For example, the signal between the network device and terminal devices 104 and 106 can be transmitted in a straight line. When there are obstacles 1 and 2 near the network device and terminal devices 108 and 110, exemplarily, the signal between the network device 102 and terminal device 108 can be transmitted through path 1 or the signal between the network device 102 and terminal device 108 can be transmitted through path 2, and the signal between the network device 102 and terminal device 110 can be transmitted through path 3 or the signal between the network device 102 and terminal device 110 can be transmitted through path 2.

[0115] It should be understood that Figure 1 the signal transmission between the shown network device 102 and terminal device 108 through paths 1 and 2 is an example, and there can be more other paths for the signal transmission between the network device 102 and terminal device 108, which is not limited in this application. Similarly, there can also be more other paths for the signal transmission between the network device 102 and terminal devices 104, 106, and 110, which is not limited in this application.

[0116] To resist the interference that may be generated by the uplink transmission of the terminal device and to help the terminal device save energy, the uplink transmission power is usually controlled. Specifically, the network device's control of the terminal device's uplink transmission power generally includes the following steps: The network device sends a path loss 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 transmission power based on the measurement result of the terminal device; the network device sends a transmit power control (TPC) command to the terminal device, and this TPC instructs the power of the terminal device to send an uplink channel or signal; the terminal device sends the uplink channel or signal based on this TPC.

[0117] Currently, the path loss measured by the terminal device is the overall path loss of signal transmission between the network device and the terminal device. Or rather, 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, there is a problem of low accuracy in the path loss measured by the terminal device.

[0118] Based on this, this application provides a power control method 200, which can improve the accuracy of power control between the terminal device and the network device. It should be noted that, Figure 2 in this, the network device and the terminal device are used as the execution subjects of this interactive schematic to illustrate this method, but this application does not limit the execution subjects of this interactive schematic. Exemplarily, Figure 2 the network device and the terminal device in this can also be a chip, a chip system or a processor that supports its implementation of this method, and can also be a logical node, a logical module or software that implements all or part of its functions. Specifically, this power control method 200 includes:

[0119] Step S210, the terminal device obtains N path losses on N transmission paths. These N transmission paths are the transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

[0120] Exemplarily, each of the above N transmission paths includes at least one piece of information among the azimuth departure angle, zenith departure angle, azimuth arrival angle, and zenith arrival angle of this transmission path. If relative to a two-dimensional plane, each transmission path can include the information of the azimuth departure angle or the azimuth arrival angle; if relative to a three-dimensional angular space, each transmission path can include the information of the azimuth departure angle and the zenith departure angle, or each transmission path can include the information of the azimuth arrival angle and the zenith arrival angle.

[0121] Exemplarily, the above terminal device may be Figure 1 any one of the terminal devices 108 or 110 shown in the figure, and the above network device may be Figure 1 the network device 102 shown in the figure. This application does not make any limitations in this regard.

[0122] Step S212: The terminal device receives first information from the network device. 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 N transmission paths. Correspondingly, the network device sends the first information to the terminal device.

[0123] Alternatively, the above first information may also indicate the beam for the terminal device to send a signal or the weight of the antenna port for the terminal device to send a signal, etc. This application does not make any limitations in this regard. The first information may indicate the beam for the terminal device to send a signal in ways such as beam number, transmission configuration indication (TCI), uplink TCI (UL TCI), sounding reference signal resource indication (SRI), transmit precoder matrix indicator (TMPI), etc. This application does not make any limitations in this regard.

[0124] Step S214: The terminal device determines the power for sending a signal to the network device based on the above first information.

[0125] Exemplarily, when the terminal device sends a physical uplink shared channel (PUSCH) to the network device in subframe i, the terminal device may determine the power for sending the PUSCH to the network device in subframe i through the following formula 1:

[0126]

[0127] where P CMAX,c (i) is the maximum transmit power of the terminal device; M PUSCH,c (i) is the bandwidth of the PUSCH resource allocated by the network device for 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). Among them, Δ cF,c (i) is the implicit power adjustment based on MCS, and f c (i) is the explicit power adjustment based on PDCCH. The explicit power adjustment of PDCCH can be indicated to the terminal device through TPC.

[0128] The terminal device can substitute the path loss corresponding to each of the above N transmission paths obtained into the above formula to obtain the power of the transmission signal corresponding to the transmission path.

[0129] The terminal device can send a signal to the network device on the first transmission path with the determined above power.

[0130] Through the above power control method 200, the network device does not need to send PLRS to the terminal device to measure the path loss, which can reduce the overhead of reference signals and thus save resources. In addition, through the above control method 200, the terminal device can obtain the transmission power of each transmission path between the terminal device and the network device, which can improve the accuracy of the transmission power control of the terminal device.

[0131] Next, the embodiments of the present application can provide two ways for the terminal device to obtain the N path losses on the N transmission paths, as shown in Figure 3 Method 1 shown below and Figure 4 Method 2 shown below.

[0132] First, introduce Figure 3 Method 1 shown below. This method 1 includes the following steps:

[0133] Steps S310, the network device obtains N path losses on N transmission paths.

[0134] Specifically, the network device can sense the N transmission paths between the network device and the terminal device according to the current position of the terminal device, and determine the N path losses on the N transmission paths according to the radio frequency map. Exemplarily, the radio frequency map can include information such as the time, angle, power, and signal strength of signal transmission.

[0135] Alternatively, the terminal device can perceive N transmission paths between the terminal 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 of the N transmission paths minus the RSRP corresponding to the transmission path to obtain the path loss of the transmission path.

[0136] Step S312, the network device sends second information to the terminal device, and the second information is used to indicate the N path losses on the N transmission paths.

[0137] Exemplarily, the above second information can indicate the N path losses on the N transmission paths through Table 1 below. For example, each of the N transmission paths includes the Azimuth departure angle of the transmission path.

[0138] Table 1

[0139] Index number of the transmission path Azimuth departure angle (°) Path loss (dB) 1 10 60 2 45 65 3 55 70 … … …

[0140] It can be seen from Table 1 that the Azimuth departure angle corresponding to transmission path 1 is 10°, and the path loss corresponding to transmission path 1 is 60 dB; the Azimuth departure angle corresponding to transmission path 2 is 45°, and the path loss corresponding to transmission path 2 is 65 dB; the Azimuth departure angle corresponding to transmission path 3 is 55°, and the path loss corresponding to transmission path 3 is 70 dB.

[0141] Step S314, the terminal device determines the N path losses on the N transmission paths based on the above second information.

[0142] In addition, the above N transmission paths can be the transmission paths between the terminal device and the network device when the terminal device is at the first position. In Mode 1, the network device can also indicate the M path losses on the M transmission paths to the terminal device through the second information. The M transmission paths can be the transmission paths between the terminal device and the network device when the terminal device is at the second position, and the M transmission paths correspond to the M paths one by one. The network device can also indicate multiple transmission paths between the terminal device and the network device when the terminal device is at other positions through the second information, which is not limited in this application.

[0143] It should be noted that the manner in which the terminal device obtains the M path losses on the M transmission paths can refer to the manner in which the terminal device obtains the N path losses on the N transmission paths, which will not be elaborated here.

[0144] Exemplarily, the above second information may indicate the path loss on the transmission path between the terminal device and the network device at multiple locations through Table 2 below. For example, each of the N transmission paths includes the Azimuth departure angle of the transmission path.

[0145] Table 2

[0146] Location of the terminal device Index number of the transmission path Azimuth departure angle (°) Path loss (dB) First location 1 10 60 First location 2 45 65 Second location 1 55 70 Second location 2 65 80 … … … …

[0147] It can be seen from Table 2 that when the terminal device is at the first location, the Azimuth departure angle corresponding to transmission path 1 between the terminal device and the network device is 10°, and the path loss corresponding to transmission path 1 is 60 dB; when the terminal device is at the first location, the Azimuth departure angle corresponding to transmission path 2 between the terminal device and the network device is 45°, and the path loss corresponding to transmission path 2 is 65 dB; when the terminal device is at the second location, the Azimuth departure angle corresponding to transmission path 1 between the terminal device and the network device is 55°, and the path loss corresponding to transmission path 1 is 70 dB; when the terminal device is at the second location, the Azimuth departure angle corresponding to transmission path 2 between the terminal device and the network device is 65°, and the path loss corresponding to transmission path 2 is 80 dB.

[0148] Exemplarily, the above first location and the second location should be locations in the cell managed by the above network device, or rather, the above first location and the above second location should be locations where the terminal device can communicate with the above network device.

[0149] By pre-configuring the path loss of the transmission paths of the terminal device at multiple locations, the network device can reduce multiple configurations during the movement of the terminal device, thereby reducing signaling overhead and enhancing the mobility of the terminal device.

[0150] Secondly, introduce Figure 4 The second method shown, which includes the following steps:

[0151] Step S410, the network device sends the third information to the terminal device, and the third information is used to indicate the mapping relationship between the RSRP and the path loss on the transmission path. Correspondingly, the terminal device receives the third information from the network device.

[0152] Exemplarily, the above third information may indicate the mapping relationship between the RSRP and the path loss on the transmission path through the following formula 2:

[0153] PL x = Transmit power of reference signal - RSRP x + Offset

[0154] Among them, the above-mentioned reference signal power and offset can be configured by a network device. The network device can configure respective reference signal power and offset for N transmission paths, or the network device can also configure the same reference signal power and offset for the N transmission paths uniformly. This application does not make any limitations in this regard. The above RSRP x is the RSRP of the x-th transmission path among the N transmission paths measured by the terminal device, and the above PL x is the path loss of the x-th transmission path among the N transmission paths.

[0155] Optionally, the network device can indicate configuration parameters (such as filter order, filter coefficient, etc.) of a filter for the terminal device to perform filtering processing on the path loss obtained through the above formula 2, so that the terminal device can perform filtering processing on the path loss according to the configuration parameters of the filter, thereby improving the accuracy of path loss estimation.

[0156] Step S412: The terminal device can perceive N transmission paths between itself and the network device based on the current position of the network device, and measure the RSRP on the N transmission paths to obtain N RSRPs, and the N RSRPs correspond one-to-one to the N transmission paths.

[0157] Exemplarily, the N RSRPs measured by the terminal device can be as shown in Table 3 below:

[0158] Table 3

[0159] Index number of the transmission path Azimuth departure angle (°) RSRP (dB) 1 10 -50 2 45 -55 3 55 -60 … … …

[0160] It can be seen from Table 3 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.

[0161] Step S414: The terminal device determines N path losses on the N transmission paths based on the above third information and the above N RSRPs.

[0162] Exemplarily, 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 Table 3 above are shown in Table 4 below:

[0163] Table 4

[0164] Index number of the transmission path Azimuth departure angle (°) Path loss (dB) 1 10 20-(-50)＝70 2 45 20-(-55)＝75 3 55 20-(-60)＝80 … … …

[0165] As can be seen from Table 4, the path loss of transmission path 1 of the terminal device is 70 dB; the path loss of transmission path 1 of the terminal device is 75 dB; the path loss of transmission path 1 of the terminal device is 80 dB.

[0166] The second information in the above Method 1 can be indicated by the network device using semi-static radio resource control (RRC) signaling or MAC-CE signaling. The third information in the above Method 2 can also be indicated by the network device using semi-static RRC signaling or MAC-CE signaling. On this basis. Optionally, the network device can also dynamically send TPC to the terminal device using DCI signaling, 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 can be less than the period for the network device to semi-statically indicate the second information or the third information to the terminal device.

[0167] The above Figures 2 to 4 describes a method for more refined control of the power of the signal sent by the terminal device. Referring to the above Figures 2 to 4 power control method, the embodiments of the present application can also provide a method for more refined control of the timing of the signal sent by the terminal device. The detailed description is as follows.

[0168] In order to make the signals of multiple terminal devices reach the network device simultaneously and help the network device perform demultiplexing, timing advance (TA) is usually performed on the multiple terminal devices for uplink. Specifically, the network device's TA for the uplink transmission of multiple terminal devices generally includes the following steps: multiple terminal devices send uplink signals to the network device; the network device estimates the TA amount of each terminal device among 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 terminal device among the multiple terminal devices; each terminal device among the multiple terminal devices sends an uplink channel or signal according to the received TAC.

[0169] 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.

[0170] The timing control method provided in this application is similar to the power control method described above. The RSRP involved in Figures 2 to 4 can be replaced with the delay, the path loss involved in Figures 2 to 4 can be replaced with TA, and the TPC involved in Figures 2 to 4 can be replaced with TAC.

[0171] Finally, the device embodiments of this application are introduced.

[0172] To implement the various functions in the method provided in this application, both the terminal device and the network device may include a hardware structure and / or a software module, and implement the above-mentioned various functions in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module. Whether a certain function among the above-mentioned various functions is executed in the form of a hardware structure, a software module, or a combination of a hardware structure and a software module depends on the specific application and design constraints of the technical solution.

[0173] Figure 5 is a schematic block diagram of the communication device 500 according to the embodiment of this 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 connected to each other through a bus 530. The communication device 500 may be a terminal device or a network device.

[0174] Optionally, the communication device 500 may further include a memory 540. The memory 540 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 540 is used to store relevant instructions and data.

[0175] The processor 510 may be one or more central processing units (CPUs). When the processor 510 is a single CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0176] When the communication device 500 is a terminal device, exemplarily, the communication device 500 is used to perform the following operations: receiving first information from a network device, etc.

[0177] When the communication device 500 is a network device, exemplarily, the communication device 500 is used to perform the following operations: sending first information to a terminal device, etc.

[0178] The above content is only an exemplary description. When the communication device 500 is a network device / terminal device, it will be responsible for performing the methods or steps related to the network device / terminal device in the foregoing method embodiments.

[0179] The above description is only an exemplary description. For specific content, reference may be made to the content shown in the foregoing method embodiments. Figure 5 The implementation of each operation in Figures 2 to 4 may also correspondingly refer to the corresponding description of the method embodiment shown in

[0180] Figure 6 is a schematic block diagram of the communication device 600 according to an embodiment of the present application. The communication device 600 may be a terminal device or a network device, or a chip or module in a terminal device or a network device, and is used to implement the methods involved in the foregoing embodiments. The communication device 600 includes a transceiver unit 610 and a processing unit 620. The transceiver unit 610 and the processing unit 620 are exemplarily introduced below.

[0181] The transceiver unit 610 may include a sending unit and a receiving unit. The sending unit is used to perform the sending action of the communication device 600, and the receiving unit is used to perform the receiving action of the communication device 600. For ease of description, in the embodiments of the present application, the sending unit and the receiving unit are combined into one transceiver unit. A unified description is made here and will not be repeated hereinafter.

[0182] When the communication device 600 is a terminal device, exemplarily, the transceiver unit 610 is used to receive first information from a network device, and the processing unit 620 is used to determine the power of the signal sent to the network device based on the first information.

[0183] When the communication device 600 is a network device, exemplarily, the transceiver unit 610 is used to send first information to a terminal device.

[0184] The above content is only an exemplary description. When the communication device 600 is a terminal device or a network device, it will be responsible for performing the methods or steps related to the terminal device or the network device in the foregoing method embodiments.

[0185] Optionally, the communication device 600 further includes a storage unit 630, and the storage unit 630 is used to store programs or codes for executing the foregoing methods.

[0186] Figure 5 and Figure 6 The device embodiments shown are used to implement Figures 2 to 4 the content described above. Figure 5 and Figure 6 For the specific execution steps and methods of the device shown, reference may be made to the content described in the foregoing method embodiments.

[0187] 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 a network device / terminal device.

[0188] The 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 circuits that can implement the method of the present application. Among them, the input / output interface 720 is used for input or output of signals or data.

[0189] For example, when the communication device 700 is a terminal device, the input / output interface 720 is used to receive first information from a network device. The processor 710 is used to determine the power of the signal sent to the network device based on the first information.

[0190] For example, when the communication device 700 is a network device, the input / output interface 720 is used to send first information to a terminal device.

[0191] In a possible implementation, the processor 710 implements the functions of a network device or a terminal device by executing instructions stored in a memory.

[0192] Optionally, the communication device 700 further includes a memory.

[0193] Optionally, the processor and the memory are integrated together.

[0194] Optionally, the memory is outside the communication device 700.

[0195] In a possible implementation, the processor 710 may be a logic circuit, and the processor 710 inputs / outputs messages or signaling through the input / output interface 720. The logic circuit may be a signal processor, a chip, or other integrated circuits that can implement the method of the embodiments of the present application.

[0196] The above description of the communication device 700 is only for illustrative purposes. The communication device 700 can be used to execute the method described in the foregoing embodiments. For specific content, reference may be made to the description of the foregoing method embodiments, which will not be elaborated herein.

[0197] The present application also provides a chip, including a processor configured to call and run instructions stored in a memory, such that a communication device equipped with the chip executes the methods in the above examples.

[0198] The present application also provides a chip, including: an input interface, an output interface, and a processor. The input interface, the output interface, and the processor are connected through an internal connection path. 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 further includes a memory configured to store a computer program or code.

[0199] The present application also provides a processor configured to be coupled with a memory and execute the methods and functions related to a network device or a terminal device in any one of the above embodiments.

[0200] The present application provides a computer program product including instructions. When the computer program product runs on a computer, the methods in the foregoing embodiments are implemented.

[0201] The present application also provides a computer program. When the computer program runs on a computer, the methods in the foregoing embodiments are implemented.

[0202] The present application also provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a computer, the method described in the foregoing embodiment is implemented.

[0203] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0204] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be described herein again.

[0205] In several embodiments provided in the present application, the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0206] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the technical solutions of the embodiments of the present application.

[0207] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0208] 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 such an understanding, the technical solutions of the embodiments of the present application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of various method embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0209] As described above, the above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power control method, characterized in that, the method includes: obtaining N path losses on N transmission paths, where the N transmission paths are the 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, and the first transmission path belongs to the N transmission paths; determining the power for sending a signal to the network device based on the first information, where N is a positive integer greater than or equal to 1.

2. The method according to claim 1, characterized in that, the method further includes: 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 N path losses on N transmission paths includes: determining the N path losses on the N transmission paths based on the second information.

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

4. The method according to claim 1, characterized in that, the method further includes: receiving third information from the network device, where the third information is used to indicate the mapping relationship between the reference signal received power (RSRP) and the path loss on the transmission path; measuring the RSRP on the N transmission paths to obtain N RSRPs, and the N RSRPs correspond one-to-one to the N transmission paths; the obtaining N path losses on N transmission paths includes: determining the N path losses on the N transmission paths 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 pieces of information: azimuth departure angle, zenith departure angle, azimuth arrival angle, zenith arrival angle.

6. A power control method, characterized in that, the method includes: obtaining N path losses on N transmission paths, where the N transmission paths are the 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, and the first transmission path belongs to the N transmission paths, and the first information is used for the terminal device to determine the power for sending a signal, where N is a positive integer greater than or equal to 1.

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

8. The method according to claim 6 or 7, wherein, 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 method for power control, wherein, the method includes: sending third information to the terminal device, where the third information is used to indicate the mapping relationship between the reference signal received power (RSRP) and the path loss on the transmission path, and the third information is used for the terminal device to determine N path losses on N transmission paths, and the N transmission paths are the transmission paths between the terminal device and the network device, and the N path losses correspond one-to-one to the N transmission paths.

10. The method according to claim 9, wherein, 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 communication device, wherein, it includes a processor, and the processor is used to, by executing a computer program or instruction, enable the communication device to execute the method according to any one of claims 1 to 5, or enable the communication device to execute the method according to any one of claims 6 to 10.

12. The communication device according to claim 11, wherein, the communication device further includes a memory, and the memory is used to store the computer program or instruction.

13. The communication device according to claim 11, wherein, the communication device further includes a communication interface, and the communication interface is used to input and / or output signals.

14. A computer-readable storage medium, wherein, a computer program or instruction is stored on the computer-readable storage medium, and when the computer program or the instruction runs on a computer, enable the method according to any one of claims 1 to 5 to be executed, or enable the method according to any one of claims 6 to 10 to be executed.

15. A computer program product, wherein, it contains instructions, and when the instructions run on a computer, enable the method according to any one of claims 1 to 5 to be executed, or enable the method according to any one of claims 6 to 10 to be executed.

Images