Communication method and related device

Abstract

A communication method and a related device, for use in improving the accuracy of uplink power control by reducing the deviation of path loss measurement, thereby improving the uplink transmission performance. In the method, a first communication device can receive a first downlink reference signal and first information, determine a first path loss on the basis of the received power of the first downlink reference signal, and determine path loss offset information on the basis of the first information. Moreover, the first communication device can determine a second path loss on the basis of the path loss offset information and the first path loss, and send an uplink signal on the basis of the second path loss. In other words, the first communication device can adjust a downlink path loss (i.e., the first path loss) on the basis of the path loss offset information indicated by the first information, so as to reduce the deviation of path loss measurement and improve the accuracy of uplink power control, thereby improving the uplink transmission performance.

Description

A communication method and related apparatus

[0001] This application claims priority to Chinese Patent Application No. 202410518450.3, filed with the State Intellectual Property Office of China on April 26, 2024, entitled “A Communication Method and Related Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more particularly to a communication method and related apparatus. Background Technology

[0003] Wireless communication can be a transmission communication between two or more communication nodes that does not propagate through conductors or cables. These communication nodes generally include network equipment and terminal equipment. During communication, the signal transmitted by the transmitter is affected by path loss (or path drop) during its propagation in the wireless channel, and the signal strength will decrease when it reaches the receiver. Therefore, the transmitter needs to adjust the signal transmission power appropriately to compensate for the impact of path loss.

[0004] Generally, during signal transmission and reception in network devices, the direction of the transmit beam used to send downlink signals is the same as the direction of the receive beam used to receive uplink signals. Accordingly, for a terminal device, it can determine the downlink path loss based on the received downlink signal (e.g., a downlink reference signal) and adjust the transmit power of the uplink signal based on the downlink path loss.

[0005] However, when the transmit and receive beam directions of network devices are different or significantly different, the above method will result in a large deviation in the adjustment of transmit power due to the large difference between the transmission loss of uplink signals and the transmission loss of downlink signals, thus affecting the uplink transmission performance. Summary of the Invention

[0006] This application provides a communication method and related apparatus for improving the accuracy of uplink power control by reducing the deviation of path loss measurement, thereby improving uplink transmission performance.

[0007] This application provides a communication method executed by a first communication device. The first communication device may be a communication equipment (such as a terminal device), or it may be a component of the communication equipment (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication equipment. In this method, the first communication device receives a first downlink reference signal, the received power of which is used to determine a first path loss; the first communication device receives first information, which is used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, which is used for uplink transmission.

[0008] Based on the above scheme, the first communication device can receive a first downlink reference signal and first information, determine a first path loss through the received power of the first downlink reference signal, and determine path loss offset information through the first information. Furthermore, the first communication device can determine a second path loss based on the path loss offset information and the first path loss, and transmit an uplink signal based on the second path loss. In other words, the first communication device can adjust the downlink path loss (i.e., the first path loss) based on the path loss offset information indicated by the first information to reduce the deviation in path loss measurement, improve the accuracy of uplink power control, and thus improve uplink transmission performance.

[0009] In this application, the terms path loss (PL), transmission loss, signal attenuation, signal attenuation loss, attenuation loss, transmission loss, signal loss, transmission path loss, path loss estimate, and path loss estimate are interchangeable. Correspondingly, path loss offset can be replaced by path loss offset, transmission loss offset, signal attenuation offset, signal attenuation loss offset, attenuation loss offset, transmission loss offset, signal loss offset, transmission path loss offset, offset of path loss estimate, or offset of path loss estimate, etc.

[0010] It should be understood that the first path loss is the path loss determined by the first communication device based on a first downlink reference signal, which can be a path loss reference signal. For example, the path loss reference signal can be a synchronization signal / physical broadcast channel block (SSB or S-SS / PSBCH block), the synchronization signal in the SSB, the demodulation reference signal in the SSB, or the channel state information reference signal (CSI-RS), etc. After receiving the first downlink reference signal, the first communication device can determine the first path loss based on the received power of the received first downlink reference signal. For example, the first path loss can be determined by the difference between the received power and the transmitted power of the downlink reference signal, and the transmitted power of the downlink reference signal can be configured or pre-configured by the network device.

[0011] It should be understood that the second path loss is used for uplink transmission (or, in other words, the second path loss is associated with uplink transmission). This can be understood as the first communication device determining the uplink transmission power based on the second path loss and performing uplink transmission based on that power. In other words, the second path loss can serve as one of the bases for determining the uplink transmission power of the first communication device.

[0012] It should be understood that during the uplink transmission process of the first communication device, the first communication device may send one or more of the following: uplink signal, uplink information, uplink data, and uplink signaling.

[0013] For example, the uplink transmission can be carried on one or more channels among the physical uplink control uplink channel (PUCCH), physical uplink shared channel (PUSCH), and physical random access channel (PRACH).

[0014] For example, the uplink information can be one or more of the following: Uplink Control Information (UCI), Scheduling Request (SR), Channel State Information (CSI), and Hybrid Automatic Repeat Request (HARQ).

[0015] For example, the uplink signal can be a channel sounding reference signal (SRS), an uplink phase noise tracking reference signal (PTRS), or an uplink positioning signal (RS), etc.

[0016] In one possible implementation of the first aspect, the method further includes: the first communication device receiving second information indicating that the path loss offset information is associated with the first downlink reference signal, or the second information indicating that the path loss offset information is associated with a plurality of downlink reference signals, the plurality of downlink reference signals including the first downlink reference signal.

[0017] Based on the above scheme, the first communication device can also receive second information so that the first communication device can determine one or more downlink reference signals associated with the road loss offset information indicated by the first information based on the second information.

[0018] It should be understood that the path loss offset information is associated with a certain downlink reference signal. This can be understood as the path loss offset information being used to adjust (or modify, or update) the downlink path loss determined by the downlink reference signal.

[0019] In one possible implementation of the first aspect, the method further includes: the first communication device receiving third information, the third information indicating that the path loss offset information is used for uplink transmission of a first terminal device (e.g., the first communication device is a first terminal device or a module in a first terminal device), or the third information indicating that the path loss offset information is used for uplink transmission of one or more terminal devices in a first cell.

[0020] Based on the above scheme, the first communication device can also receive third information, so that the first communication device can determine whether the path loss offset information indicated by the first information is a UE-specific configuration or a cell-specific configuration based on the third information, and can also realize multiple configuration ranges of path loss offset information to improve the flexibility of the scheme implementation.

[0021] In one possible implementation of the first aspect, the method further includes: the first communication device receiving fourth information, the fourth information being used to determine a first TPC parameter set in N sets of transmit power control (TPC) parameters, where N is an integer greater than 1; in the N sets of TPC parameters, the power control ranges corresponding to different TPC parameter sets are different; the first communication device receiving fifth information, the fifth information being used to indicate a first TPC parameter in the first TPC parameter set, the first TPC parameter being used for uplink transmission.

[0022] Based on the above scheme, the first communication device can determine the first TPC parameter set from N TPC parameter sets corresponding to different power control ranges by receiving the fourth information. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on the fifth information, and perform uplink transmission based on the first TPC parameter. In this way, compared with the power control adjustment method that achieves uplink transmission based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink transmission power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0023] Alternatively, parameter set can be replaced with other terms, such as parameter group, parameter combination, etc.

[0024] It should be understood that the first TPC parameter is used for uplink transmission. This can be interpreted as the first communication device determining the uplink transmission power based on the first TPC parameter and performing uplink transmission based on that power. In other words, the first TPC parameter can serve as one of the bases for determining the uplink transmission power of the first communication device.

[0025] In one possible implementation of the first aspect, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

[0026] Based on the above scheme, for the N TPC parameter sets corresponding to different power control ranges, the index set corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate the TPC parameters of different power control ranges through the same index set, so as to reduce the overhead of the indication and reduce the implementation complexity.

[0027] In one possible implementation of the first aspect, the indexes in the index set are indicated by a first field in the downlink control information (DCI), in which the fifth information is carried.

[0028] Based on the above scheme, the index set corresponding to different TPC parameter sets can be the same, and the information indicating the index in the index set (such as the fifth information) can be carried in the first field of DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead. At the same time, the method of reusing the same field for indication can also be compatible with the traditional (legacy) indication method.

[0029] Optionally, the fifth information includes the index of the first TPC parameter in the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0030] Optionally, the fourth information includes an index of the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0031] In one possible implementation of the first aspect, each of the N TPC parameter sets contains TPC parameters including the accumulated value of power control and / or the absolute value of power control.

[0032] Based on the above scheme, the TPC parameter set can be adjusted by adjusting the cumulative value and / or absolute value of the power control, thereby improving the flexibility of the scheme implementation.

[0033] In one possible implementation of the first aspect, the method further includes: the first communication device receiving sixth information, the sixth information indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third information indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

[0034] Based on the above scheme, the first communication device can also receive a sixth message, so that the first communication device can determine whether the first TPC parameter set indicated by the first message is a UE-specific configuration or a cell-specific configuration based on the sixth message, and can also realize multiple configuration ranges of the first TPC parameter set to improve the flexibility of the scheme implementation.

[0035] In one possible implementation of the first aspect, the method further includes: the first communication device receiving seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmissions in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmissions in at least two uplink channels.

[0036] Based on the above scheme, the first communication device can adjust the power control of uplink transmissions in at least two power control states on the same uplink channel (or adjust the power control of uplink transmissions in different uplink channels) using the power control parameters indicated by the seventh information. The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0037] It should be understood that the power control parameters indicated by the seventh information can be used for power control of uplink transmission in multiple power control states of the uplink channel. This can be understood as the first communication device determining the transmission power of the uplink transmission in any power control state of the same channel based on these power control parameters, and performing uplink transmission based on this transmission power. In other words, these power control parameters can serve as one of the bases for determining the transmission power of the first communication device for uplink transmission in any power control state of the same channel.

[0038] It should be understood that the power control parameters indicated by the seventh information can be used for power control of uplink transmission in at least two uplink channels. This means that the first communication device can determine the transmit power for uplink transmission in the at least two uplink channels based on these power control parameters, and perform uplink transmission based on this transmit power. In other words, these power control parameters can serve as one of the bases for determining the transmit power of the first communication device for uplink transmission in any of the at least two uplink channels.

[0039] Optionally, the power control parameters indicated by the seventh information can be used for uplink power control in multiple power control states of the same channel (or uplink power control in different channels). For this purpose, the power control parameters indicated by the seventh information can be unified transmission power control (TPC) parameters, channel common parameters, loop common parameters, large-scale transmission power control (TPC for scale), or other expressions, which are not limited here.

[0040] In one possible implementation of the first aspect, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0041] Based on the above scheme, the first communication device can also receive the eighth information, so that the first communication device can determine, based on the eighth information, that the power control adjustment range applied to the power control parameters indicated by the seventh information is different power control states (or different channels) of the same channel.

[0042] In one possible implementation of the first aspect, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0043] Based on the above scheme, the first communication device can also receive the ninth information, so that the first communication device can determine whether the power control parameters indicated by the seventh information indicated by the first information are user equipment specific configurations or cell specific configurations based on the ninth information. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh information, so as to improve the flexibility of the scheme implementation.

[0044] A second aspect of this application provides a communication method performed by a second communication device. The second communication device may be a communication device (such as a network device), or it may be a component within the communication device (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication device. In this method, the second communication device transmits a first downlink reference signal, the received power of which is used to determine a first path loss; the second communication device transmits first information, which is used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, which is used for uplink transmission.

[0045] Based on the above scheme, the second communication device can send a first downlink reference signal and first information to the first communication device, enabling the first communication device to determine a first path loss based on the received power of the first downlink reference signal and to determine path loss offset information based on the first information. Furthermore, the first communication device can determine a second path loss based on the path loss offset information and the first path loss, and send an uplink signal based on the second path loss. In other words, the first communication device can adjust the downlink path loss (i.e., the first path loss) based on the path loss offset information indicated by the first information to reduce the deviation in path loss measurement, improve the accuracy of uplink power control, and thus improve uplink transmission performance.

[0046] In one possible implementation of the second aspect, the method further includes: the second communication device sending second information indicating that the path loss offset information is associated with the first downlink reference signal, or the second information indicating that the path loss offset information is associated with a plurality of downlink reference signals, the plurality of downlink reference signals including the first downlink reference signal.

[0047] Based on the above scheme, the second communication device can also send second information to the first communication device so that the first communication device can determine one or more downlink reference signals associated with the path loss offset information indicated by the first information based on the second information.

[0048] In one possible implementation of the second aspect, the method further includes: the second communication device sending third information, the third information indicating that the path loss offset information is used for uplink transmission of the first terminal device, or the third information indicating that the path loss offset information is used for uplink transmission of one or more terminal devices in the first cell.

[0049] Based on the above scheme, the second communication device can also send third information to the first communication device so that the first communication device can determine whether the path loss offset information indicated by the first information is a UE-specific configuration or a cell-specific configuration based on the third information. This also enables the implementation of multiple configuration ranges for the path loss offset information, thereby improving the flexibility of the scheme implementation.

[0050] In one possible implementation of the second aspect, the method further includes: the second communication device sending fourth information, the fourth information being used to determine a first TPC parameter set in a set of N transmission power control (TPC) parameters, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; the second communication device sending fifth information, the fifth information being used to indicate a first TPC parameter in the first TPC parameter set, the first TPC parameter being used for uplink transmission.

[0051] Based on the above scheme, the second communication device can also send a fourth message to the first communication device, enabling the first communication device to determine a first TPC parameter set from N TPC parameter sets corresponding to different power control ranges. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on the fifth message, and perform uplink transmission based on the first TPC parameter. In this way, compared to the power control adjustment method that achieves uplink transmission power control adjustment based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink transmission power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0052] In one possible implementation of the second aspect, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

[0053] Based on the above scheme, for the N TPC parameter sets corresponding to different power control ranges, the index set corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate the TPC parameters of different power control ranges through the same index set, so as to reduce the overhead of the indication and reduce the implementation complexity.

[0054] In one possible implementation of the second aspect, the indexes in the index set are indicated by a first field in the DCI, in which the fifth information is carried.

[0055] Based on the above scheme, the index set corresponding to different TPC parameter sets can be the same, and the information indicating the index in the index set (such as the fifth information) can be carried in the first field of DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead. At the same time, the method of reusing the same field for indication can also be compatible with the traditional (legacy) indication method.

[0056] Optionally, the fifth information includes the index of the first TPC parameter in the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0057] Optionally, the fourth information includes an index of the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0058] In one possible implementation of the second aspect, each of the N TPC parameter sets contains TPC parameters including the cumulative value of power control and / or the absolute value of power control.

[0059] Based on the above scheme, the TPC parameter set can be adjusted by adjusting the cumulative value and / or absolute value of the power control, thereby improving the flexibility of the scheme implementation.

[0060] In one possible implementation of the second aspect, the method further includes: the second communication device sending a sixth message indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third message indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

[0061] Based on the above scheme, the second communication device can also send a sixth message to the first communication device so that the first communication device can determine whether the first TPC parameter set indicated by the first message is a UE-specific configuration or a cell-specific configuration based on the sixth message. This also enables the implementation of multiple configuration ranges for the first TPC parameter set, thereby improving the flexibility of the scheme implementation.

[0062] In one possible implementation of the second aspect, the method further includes: the second communication device sending seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmissions in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmissions in at least two uplink channels.

[0063] Based on the above scheme, the second communication device can also send a seventh message indicating power control parameters to the first communication device, enabling the first communication device to perform power control adjustment on uplink transmissions in at least two power control states on the same uplink channel (or, to perform power control adjustment on uplink transmissions in different uplink channels). The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh message can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0064] In one possible implementation of the second aspect, the method further includes: the second communication device sending an eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0065] Based on the above scheme, the second communication device can also send an eighth message to the first communication device so that the first communication device can determine, based on the eighth message, that the power control adjustment range applied to the power control parameters indicated by the seventh message is different power control states (or different channels) of the same channel.

[0066] In one possible implementation of the second aspect, the method further includes: the second communication device sending a ninth message indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth message indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0067] Based on the above scheme, the second communication device can also send a ninth message to the first communication device so that the first communication device can determine whether the power control parameters indicated by the seventh message indicated by the first message are UE-specific or cell-specific configurations based on the ninth message. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh message, thereby improving the flexibility of the scheme implementation.

[0068] A third aspect of this application provides a communication method executed by a first communication device. The first communication device may be a communication equipment (such as a terminal device), or it may be a component within a communication equipment (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication equipment. In this method, the first communication device receives fourth information to determine a first TPC parameter set from N Transmission Power Control (TPC) parameter sets, where N is an integer greater than 1; different TPC parameter sets correspond to different power control ranges; the first communication device receives fifth information to indicate a first TPC parameter in the first TPC parameter set, which is used for uplink transmission.

[0069] Based on the above scheme, the first communication device can determine the first TPC parameter set from N TPC parameter sets corresponding to different power control ranges by receiving the fourth information. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on the fifth information, and perform uplink transmission based on the first TPC parameter. In this way, compared with the power control adjustment method that achieves uplink transmission based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink transmission power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0070] In one possible implementation of the third aspect, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

[0071] Based on the above scheme, for the N TPC parameter sets corresponding to different power control ranges, the index set corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate the TPC parameters of different power control ranges through the same index set, so as to reduce the overhead of the indication and reduce the implementation complexity.

[0072] In one possible implementation of the third aspect, the indexes in the index set are indicated by a first field in the DCI, in which the fifth information is carried.

[0073] Based on the above scheme, the index set corresponding to different TPC parameter sets can be the same, and the information indicating the index in the index set (such as the fifth information) can be carried in the first field of DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead. At the same time, the method of reusing the same field for indication can also be compatible with the traditional (legacy) indication method.

[0074] Optionally, the fifth information includes the index of the first TPC parameter in the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0075] Optionally, the fourth information includes an index of the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0076] In one possible implementation of the third aspect, each of the N TPC parameter sets contains TPC parameters including the cumulative value of power control and / or the absolute value of power control.

[0077] Based on the above scheme, the TPC parameter set can be adjusted by adjusting the cumulative value and / or absolute value of the power control, thereby improving the flexibility of the scheme implementation.

[0078] In one possible implementation of the third aspect, the method further includes: the first communication device receiving sixth information, the sixth information indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third information indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

[0079] Based on the above scheme, the first communication device can also receive a sixth message, so that the first communication device can determine whether the first TPC parameter set indicated by the first message is a UE-specific configuration or a cell-specific configuration based on the sixth message, and can also realize multiple configuration ranges of the first TPC parameter set to improve the flexibility of the scheme implementation.

[0080] In one possible implementation of the third aspect, the method further includes: the first communication device receiving seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmissions in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmissions in at least two uplink channels.

[0081] Based on the above scheme, the first communication device can adjust the power control of uplink transmissions in at least two power control states on the same uplink channel (or adjust the power control of uplink transmissions in different uplink channels) using the power control parameters indicated by the seventh information. The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0082] In one possible implementation of the third aspect, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0083] Based on the above scheme, the first communication device can also receive the eighth information, so that the first communication device can determine, based on the eighth information, that the power control adjustment range applied to the power control parameters indicated by the seventh information is different power control states (or different channels) of the same channel.

[0084] In one possible implementation of the third aspect, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0085] Based on the above scheme, the first communication device can also receive the ninth information, so that the first communication device can determine whether the power control parameters indicated by the seventh information indicated by the first information are user equipment specific configurations or cell specific configurations based on the ninth information. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh information, so as to improve the flexibility of the scheme implementation.

[0086] A fourth aspect of this application provides a communication method executed by a second communication device. The second communication device may be a communication device (such as a network device), or it may be a component of the communication device (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication device. In this method, the second communication device sends fourth information to determine a first TPC parameter set from N TPC parameter sets, where N is an integer greater than 1; the power control ranges corresponding to different N TPC parameter sets are different; the second communication device sends fifth information to indicate a first TPC parameter from the first TPC parameter set, which is used for uplink transmission.

[0087] Based on the above scheme, the second communication device can send fourth information to the first communication device, enabling the first communication device to determine a first TPC parameter set from N TPC parameter sets corresponding to different power control ranges. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on fifth information, and perform uplink transmission based on the first TPC parameter. In this way, compared to the power control adjustment method that achieves uplink transmission power control adjustment based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink transmission power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0088] In one possible implementation of the fourth aspect, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

[0089] Based on the above scheme, for the N TPC parameter sets corresponding to different power control ranges, the index set corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate the TPC parameters of different power control ranges through the same index set, so as to reduce the overhead of the indication and reduce the implementation complexity.

[0090] In one possible implementation of the fourth aspect, the indexes in the index set are indicated by a first field in the DCI, and the fifth information is carried in that first field.

[0091] Based on the above scheme, the index set corresponding to different TPC parameter sets can be the same, and the information indicating the index in the index set (such as the fifth information) can be carried in the first field of DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead. At the same time, the method of reusing the same field for indication can also be compatible with the traditional (legacy) indication method.

[0092] Optionally, the fifth information includes the index of the first TPC parameter in the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0093] Optionally, the fourth information includes an index of the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0094] In one possible implementation of the fourth aspect, each of the N TPC parameter sets contains TPC parameters including the cumulative value of power control and / or the absolute value of power control.

[0095] Based on the above scheme, the TPC parameter set can be adjusted by adjusting the cumulative value and / or absolute value of the power control, thereby improving the flexibility of the scheme implementation.

[0096] In one possible implementation of the fourth aspect, the method further includes: the second communication device sending a sixth message indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third message indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

[0097] Based on the above scheme, the second communication device can also send a sixth message to the first communication device so that the first communication device can determine whether the first TPC parameter set indicated by the first message is a UE-specific configuration or a cell-specific configuration based on the sixth message. This also enables the implementation of multiple configuration ranges for the first TPC parameter set, thereby improving the flexibility of the scheme implementation.

[0098] In one possible implementation of the fourth aspect, the method further includes: the second communication device sending seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmissions in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmissions in at least two uplink channels.

[0099] Based on the above scheme, the second communication device can also send a seventh message indicating power control parameters to the first communication device, enabling the first communication device to perform power control adjustment on uplink transmissions in at least two power control states on the same uplink channel (or, to perform power control adjustment on uplink transmissions in different uplink channels). The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh message can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0100] In one possible implementation of the fourth aspect, the method further includes: the second communication device sending an eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0101] Based on the above scheme, the second communication device can also send an eighth message to the first communication device so that the first communication device can determine, based on the eighth message, that the power control adjustment range applied to the power control parameters indicated by the seventh message is different power control states (or different channels) of the same channel.

[0102] In one possible implementation of the fourth aspect, the method further includes: the second communication device sending a ninth message indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth message indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0103] Based on the above scheme, the second communication device can also send a ninth message to the first communication device so that the first communication device can determine whether the power control parameters indicated by the seventh message indicated by the first message are UE-specific or cell-specific configurations based on the ninth message. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh message, thereby improving the flexibility of the scheme implementation.

[0104] A fifth aspect of this application provides a communication method executed by a first communication device. The first communication device may be a communication equipment (such as a terminal device), or it may be a component of the communication equipment (such as a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication equipment. In this method, the first communication device receives seventh information, which indicates power control parameters. These power control parameters are used for power control of uplink transmissions in at least two power control states on an uplink channel, or for power control of uplink transmissions in at least two uplink channels. The first communication device determines the power control parameters based on the seventh information.

[0105] Based on the above scheme, the first communication device can adjust the power control of uplink transmissions in at least two power control states on the same uplink channel (or adjust the power control of uplink transmissions in different uplink channels) using the power control parameters indicated by the seventh information. The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0106] It should be noted that the power control parameters indicated in the seventh information can be parameters from the uplink closed-loop power control process. Uplink closed-loop power control can be a method in which network devices (such as the second communication device) adjust the uplink transmission power of terminal devices by sending commands. Generally, traditional uplink closed-loop power control is applied to a single physical layer channel or signal (such as parameter f in method one below). b,f,c (i,l), parameter h in method two b,f,c (i,l) or parameter g in method three b,f,c (i,l)), or it refers to a single physical layer signal or the state corresponding to the signal (here, the state is also called a closed-loop power control loop). In the above scheme, the power control parameters indicated by the seventh information can be used to control / adjust the uplink transmission power corresponding to multiple physical layer channels or signals (or multiple closed-loop power control states or loops).

[0107] In one possible implementation of the fifth aspect, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0108] Based on the above scheme, the first communication device can also receive the eighth information, so that the first communication device can determine, based on the eighth information, that the power control adjustment range applied to the power control parameters indicated by the seventh information is different power control states (or different channels) of the same channel.

[0109] In one possible implementation of the fifth aspect, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0110] Based on the above scheme, the first communication device can also receive the ninth information, so that the first communication device can determine whether the power control parameters indicated by the seventh information indicated by the first information are user equipment specific configurations or cell specific configurations based on the ninth information. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh information, so as to improve the flexibility of the scheme implementation.

[0111] A sixth aspect of this application provides a communication method performed by a second communication device. The second communication device may be a communication device (such as a network device), or it may be a component of the communication device (e.g., a processor, chip, or chip system), or it may be a logic module or software capable of implementing all or part of the functions of the communication device. In this method, the second communication device determines seventh information, which is used to indicate power control parameters; wherein the power control parameters are used for power control of uplink transmissions in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmissions in at least two uplink channels; the second communication device transmits the seventh information.

[0112] Based on the above scheme, the second communication device can send a seventh message indicating power control parameters to the first communication device, enabling the first communication device to perform power control adjustment on uplink transmissions in at least two power control states on the same uplink channel (or, to perform power control adjustment on uplink transmissions in different uplink channels). The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh message can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0113] In one possible implementation of the sixth aspect, the method further includes: the second communication device sending an eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0114] Based on the above scheme, the second communication device can also send an eighth message to the first communication device so that the first communication device can determine, based on the eighth message, that the power control adjustment range applied to the power control parameters indicated by the seventh message is different power control states (or different channels) of the same channel.

[0115] In one possible implementation of the sixth aspect, the method further includes: the second communication device sending a ninth message indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth message indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

[0116] Based on the above scheme, the second communication device can also send a ninth message to the first communication device so that the first communication device can determine whether the power control parameters indicated by the seventh message indicated by the first message are UE-specific or cell-specific configurations based on the ninth message. It can also realize multiple configuration ranges of the power control parameters indicated by the seventh message, thereby improving the flexibility of the scheme implementation.

[0117] A seventh aspect of this application provides a communication device, which is a first communication device, comprising a transceiver unit and a processing unit; the transceiver unit is configured to receive a first downlink reference signal, the received power of which is used to determine a first path loss; the transceiver unit is further configured to receive first information, which is used to indicate path loss offset information; the processing unit is configured to determine a second path loss based on the path loss offset information and the first path loss, the second path loss being used for uplink transmission.

[0118] In the seventh aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the first aspect and achieve the corresponding technical effects. For details, please refer to the first aspect, which will not be repeated here.

[0119] An eighth aspect of this application provides a communication device, which is a second communication device, comprising a transceiver unit and a processing unit; the processing unit is configured to determine a first downlink reference signal and first information; the transceiver unit is configured to transmit the first downlink reference signal, the received power of which is used to determine a first path loss; the transceiver unit is further configured to transmit the first information, which is used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, which is used for uplink transmission.

[0120] In the eighth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the second aspect and achieve the corresponding technical effects. For details, please refer to the second aspect, which will not be repeated here.

[0121] The ninth aspect of this application provides a communication device, which is a first communication device, comprising a transceiver unit and a processing unit; the transceiver unit is configured to receive fourth information, the fourth information being used to determine a first TPC parameter set from N transmission power control (TPC) parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, different TPC parameter sets correspond to different power control ranges; the transceiver unit is further configured to receive fifth information; the processing unit is configured to determine a first TPC parameter from the first TPC parameter set based on the fifth information, the first TPC parameter being used for uplink transmission.

[0122] In the ninth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the third aspect and achieve the corresponding technical effects. For details, please refer to the third aspect, which will not be repeated here.

[0123] The tenth aspect of this application provides a communication device, which is a second communication device, comprising a transceiver unit and a processing unit; the processing unit is used to determine fourth information and fifth information; the transceiver unit is used to transmit the fourth information, which is used to determine a first TPC parameter set in N TPC parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different N TPC parameter sets are different; the transceiver unit is also used to transmit the fifth information, which is used to indicate a first TPC parameter in the first TPC parameter set, and the first TPC parameter is used for uplink transmission.

[0124] In the tenth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the fourth aspect and achieve the corresponding technical effects. For details, please refer to the fourth aspect, which will not be repeated here.

[0125] The eleventh aspect of this application provides a communication device, which is a first communication device, comprising a transceiver unit and a processing unit; the transceiver unit is used to receive seventh information, which is used to indicate power control parameters; the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels; the processing unit is used to determine the power control parameters based on the seventh information.

[0126] In the eleventh aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the fifth aspect and achieve the corresponding technical effects. For details, please refer to the fifth aspect, which will not be repeated here.

[0127] The twelfth aspect of this application provides a communication device, which is a second communication device, comprising a transceiver unit and a processing unit; the processing unit is used to determine seventh information, which is used to indicate power control parameters; wherein the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels; the transceiver unit is used to transmit the seventh information.

[0128] In the twelfth aspect of this application, the constituent modules of the communication device can also be used to perform the steps executed in various possible implementations of the sixth aspect and achieve the corresponding technical effects, all of which can be referred to the sixth aspect, and will not be repeated here.

[0129] The thirteenth aspect of this application provides a communication device including at least one processor coupled to a memory; the memory is used to store a program or instructions; the at least one processor is used to execute the program or instructions to cause the communication device to implement the method described in any possible implementation of any of the first to sixth aspects. Optionally, the communication device may include the memory.

[0130] The fourteenth aspect of this application provides a communication device including at least one logic circuit and an input / output interface; the logic circuit is used to perform the method as described in any one of the possible implementations of the first to sixth aspects described above.

[0131] The fifteenth aspect of this application provides a communication system, which includes the first communication device and the second communication device described above.

[0132] The sixteenth aspect of this application provides a computer-readable storage medium for storing one or more computer-executable instructions, which, when executed by a processor, perform the method as described in any possible implementation of any of the first to sixth aspects described above.

[0133] The seventeenth aspect of this application provides a computer program product (or computer program) that, when executed by a processor, performs the method described in any possible implementation of any of the first to sixth aspects described above.

[0134] The eighteenth aspect of this application provides a chip system including at least one processor for supporting a communication device in implementing the method described in any possible implementation of any of the first to sixth aspects.

[0135] In one possible design, the chip system may further include a memory for storing program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices. Optionally, the chip system may also include interface circuitry that provides program instructions and / or data to the at least one processor.

[0136] The technical effects of any of the design methods in aspects seven through eighteen can be found in the technical effects of the different design methods in aspects one through six above, and will not be repeated here. Attached Figure Description

[0137] Figure 1 is a schematic diagram of the communication system provided in this application;

[0138] Figure 2 is a schematic diagram of the implementation process of the uplink transmission involved in this application;

[0139] Figures 3 to 5 are schematic diagrams of the communication method provided in this application;

[0140] Figures 6 to 9 are schematic diagrams of the communication device provided in this application. Detailed Implementation

[0141] First, some terms used in the embodiments of this application will be explained to facilitate understanding by those skilled in the art.

[0142] (1) Configuration and Pre-configuration: In this application, both configuration and pre-configuration are used. Configuration refers to the process by which network devices such as base stations or servers send configuration information or parameter values ​​to the terminal via messages or signaling, so that the terminal can determine the communication parameters or resources for transmission based on these values ​​or information. Pre-configuration is similar to configuration. It can be a method by which network devices such as base stations or servers send parameter information or values ​​to the terminal via a communication link or carrier; it can also be a method by defining the corresponding parameters or parameter values ​​in a standard, or by setting the relevant parameters or values ​​in the terminal device in advance. This application does not limit this method. Furthermore, these values ​​and parameters can be changed or updated.

[0143] (2) In this application, “for indicating” can include both direct and indirect indication. When describing an indication information as indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0144] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementation, there are many ways to instruct the information to be instructed. For example, it can be implemented through direct instruction, such as through the information to be instructed itself or its index. It can also be implemented indirectly by instructing other information, where there is a relationship between the other information and the information to be instructed. Alternatively, only a part of the information to be instructed can be indicated, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent.

[0145] The information to be instructed can be sent as a whole or divided into multiple sub-information messages, and the sending period and / or timing of these sub-information messages can be the same or different. This application does not limit the specific sending method. The sending period and / or timing of these sub-information messages can be predefined, for example, according to a protocol, or configured by the transmitting device by sending configuration information to the receiving device. This configuration information can include, for example, but not limited to, one or a combination of at least two of radio resource control (RRC) signaling, media access control (MAC) layer signaling, and physical layer signaling. MAC layer signaling includes, for example, a MAC control element (CE); physical layer signaling includes, for example, downlink control information (DCI).

[0146] (3) Reference signal (RS), also known as pilot signal. In communication systems, estimating the uplink or downlink channel is essential for transmitting and receiving data, obtaining system synchronization and feedback channel information. Channel estimation refers to the process of reconstructing or recovering the received signal to compensate for signal distortion caused by channel fading and noise fading. It uses reference signals known to the transmitter and receiver to track the time and frequency domain changes of the channel. These reference signals are distributed in different resource elements (REs) in the time-frequency two-dimensional space within the orthogonal frequency division multiplexing (OFDM) symbols, and have known amplitudes and phases.

[0147] At the physical layer, uplink communication can include the transmission of uplink physical channels and uplink signals. Uplink physical channels include the random access channel (PRACH), the physical uplink control channel (PUCCH), and the physical uplink shared channel (PUSCH), etc. Uplink signals include the sounding reference signal (SRS), the PUCCH de-modulation reference signal (PUCCH-DMRS), the PUSCH de-modulation reference signal (PUSCH-DMRS), the phase noise tracking reference signal (PTRS), and the uplink positioning signal (RS), etc.

[0148] At the physical layer, downlink communication can include the transmission of downlink physical channels and downlink signals. Downlink physical channels include the physical broadcast channel (PBCH), the physical downlink control channel (PDCCH), and the physical downlink shared channel (PDSCH). Downlink signals include the primary synchronization signal (PSS) / secondary synchronization signal (SSS), the downlink control channel demodulation reference signal (PDCCH-DMRS), the downlink data channel demodulation reference signal (PDSCH-DMRS), the phase noise tracking signal (PTRS), the channel status information reference signal (CSI-RS), the cell reference signal (CRS) (not present in NR), the time / frequency tracking reference signal (TRS) (not present in LTE), and the LTE / NR positioning signal (positioning RS), etc.

[0149] (4) The terms "system" and "network" in the embodiments of this application can be used interchangeably. "At least one" means one or more, and "more" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, sequence, priority or importance of multiple objects.

[0150] (5) In the embodiments of this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to device X" can be understood as the destination of the information being device X, which may include sending directly through the air interface or sending indirectly through the air interface by other units or modules. "Receive information from device Y" can be understood as the source of the information being device Y, which may include receiving directly from device Y through the air interface or receiving indirectly from device Y through the air interface by other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0151] For example, consider the communication process between entity A and entity B. In this application, entity A sends information to entity B, either directly or indirectly through other entities. Similarly, entity B receives information from entity A, either directly or indirectly through other entities. Entities A and B can be radio access network (RAN) nodes or terminals, or modules within RAN nodes or terminals. The sending and receiving of information can be an interaction between a RAN node and a terminal, such as between a base station and a terminal; it can also be an interaction between two RAN nodes, such as between a central unit (CU) and a distributed unit (DU); or it can be an interaction between different modules within a device, such as between a terminal chip and other modules of the terminal, or between a base station chip and other modules of the base station.

[0152] (6) Beams. Beams and beam pair links (BPLs) are introduced into communication systems. A beam is a communication resource. Beams can be divided into transmit beams and receive beams. Beamforming techniques can be beamforming or other technologies. Beamforming includes transmit beamforming and receive beamforming. The beams used here can also be called analog beams.

[0153] In New Radio (NR) protocols, beamforming can be represented as a spatial domain filter, spatial filter, spatial domain parameter, spatial parameter, spatial domain setting, spatial setting, or QCL (Quasi-colocation) information, QCL assumption, QCL indication, etc. Beamforming can be indicated by transmission configuration indication state (TCI-state) parameters or by spatial relation parameters. Therefore, in this application, beamforming can be replaced by spatial domain filter, spatial filter, spatial parameter, spatial parameter, spatial setting, spatial setting, QCL information, QCL assumption, QCL indication, TCI-state (DL TCI-state, UL TCI-state), spatial relation, etc. These terms are also equivalent to each other. Beamforming can also be replaced with other beamforming terms, which are not limited in this application.

[0154] The beam used to transmit signals can be called the transmission beam (Tx beam), or it can be referred to as a spatial domain transmission filter, spatial transmission filter, spatial domain transmission parameter, spatial transmission setting, or spatial transmission setting. The downlink transmission beam can be indicated by TCI-state.

[0155] The beam used to receive signals can be called a reception beam (Rx beam), a spatial domain reception filter, a spatial reception filter, a spatial domain reception parameter, a spatial reception setting, or a spatial reception setting. The uplink transmit beam can be indicated by a spatial relation, an uplink TCI-state, or an SRS resource (indicating the transmit beam using that SRS). Therefore, the uplink beam can also be replaced by an SRS resource.

[0156] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.

[0157] Furthermore, the beam can be a wide beam, a narrow beam, or other types of beam. The beamforming technology can be beamforming technology or other technologies. Specifically, beamforming technology can be digital beamforming technology, analog beamforming technology, or hybrid digital / analog beamforming technology, etc.

[0158] Beams are generally associated with resources. For example, during beam measurement, network devices measure different beams using different resources. The terminal device reports the measured resource quality, allowing the network device to determine the quality of the corresponding beam. During data transmission, beam information is also indicated through its corresponding resources. For instance, network devices use the TCI field in DCI to indicate the PDSCH beam information of the terminal device.

[0159] Optionally, multiple beams with the same or similar communication characteristics can be considered as a single beam. A beam may include one or more antenna ports for transmitting data channels, control channels, and detection signals, etc. One or more antenna ports forming a beam can also be considered as a set of antenna ports.

[0160] In the embodiments of this application, unless otherwise specified, a beam refers to the transmit beam of a network device. In beam measurement, each beam of a network device corresponds to a resource, and therefore the beam corresponding to that resource can be uniquely identified by the resource index.

[0161] (7) Uplink transmission power. Taking the UE as an example, the transmission power of the UE to transmit PUSCH, PUCCH, SRS, and PRACH is mainly related to the UE's maximum transmission power, the network device's expected receive power level, path loss, path loss correction factor, closed-loop power control adjustment, power adjustment status, number of transmission resource blocks, subcarrier spacing, etc.

[0162] As an example, taking PUSCH as an example, the UE's transmit power P PUSCH,b,f,c (i,j,q d ,l) Satisfying Method 1:

[0163] P PUSCH,b,f,c (i,j,q d The value of l) is the minimum of the two items within the curly braces above;

[0164] b,f,c: Corresponding to UL BWP index, carrier index, and serving cell index;

[0165] i: The corresponding transmission timing is defined by the time slot index of the system frame number and the symbols within the time slot;

[0166] j: Parameter set configuration index. For example, j=0 indicates power control for message 3 (msg3); j=1 indicates PUSCH power control for the configured authorization configuration (ConfiguredGrantConfig); j=2~J, the rest are normal power controls;

[0167] q d : Path loss reference signal index (can be SSB or CSI-RS, determined by the path loss reference signal associated with the TCI state transmitted uplink under the Unified TCI framework);

[0168] μ is the index for the subcarrier spacing configuration;

[0169] l: Power control adjustment status index;

[0170] P CMAX,f,c (i) represents the maximum transmit power of the UE;

[0171] P O_PUSCH,b,f,c (j) represents the desired receive power level of the network device;

[0172] α b,f,c (j) is the path loss correction factor;

[0173] PL b,f,c (q d This refers to the downlink path loss estimated by the terminal based on the path loss reference signal;

[0174] The number of resource blocks allocated for sending PUSCH;

[0175] Δ TF,b,f,c (i) represents the power bias values ​​of different MCS formats relative to the reference modulation and coding scheme (MCS);

[0176] f b,f,c (i,l) represents the adjustment amount of the transmit power, which is obtained from the transmit power control (TPC) information of the PDCCH.

[0177] As another example, taking SRS as an example, the UE's transmit power P SRS,b,f,c (i,q s ,l) Satisfying Method Two:

[0178] P SRS,b,f,c (i,q s The value of l) is the minimum of the two items within the curly braces above;

[0179] P O_SRS,b,f,c (j) represents the desired receive power level of the network device;

[0180] α SRS,b,f,c (q s ) is the path loss correction factor;

[0181] M SRS,b,f,c (i) is the number of resource blocks allocated for sending SRS;

[0182] q s The path loss reference signal index (which can be SSB or CSI-RS, and under the Unified TCI framework, is determined by the path loss reference signal associated with the TCI state transmitted uplink);

[0183] h b,f,c (i,l) represents the adjustment amount of the transmit power, which is obtained from the transmit power control (TPC) information of the PDCCH.

[0184] For other parameters, please refer to the above P. PUSCH,b,f,c (i,j,q d The parameter definitions in ,l).

[0185] As another example, taking PUCCH as an example, the UE's transmit power P SRS,b,f,c (i,q s ,l) Satisfying Method 3:

[0186] P PUCCH,b,f,c (i,q u ,q d The value of l) is the minimum of the two items within the curly braces above;

[0187] q u It is the path loss reference signal index (which can be SSB or CSI-RS, and under the Unified TCI framework, it is determined by the path loss reference signal associated with the TCI state transmitted uplink);

[0188] P O_PUCCH,b,f,c (q u () represents the desired receive power level for the network device;

[0189] The number of resource blocks allocated for sending PUCCH;

[0190] Δ F_PUCCH (F) represents the power bias values ​​of different MCS formats relative to the reference modulation and coding scheme (MCS);

[0191] g b,f,c (i,l) represents the adjustment amount of the transmit power, which is obtained from the transmit power control (TPC) information of the PDCCH.

[0192] For other parameters, please refer to the above P. PUSCH,b,f,c (i,j,q d The parameter definitions in ,l).

[0193] Optionally, taking the implementation of method one above as an example, the parameter f b,f,c (i,l) can be configured with absolute values ​​or accumulated in the following ways:

[0194] Power control for PUSCH is set or accumulated through uplink grant (UL Grant) information (beared in DCI 0_0 / 1 / 2).

[0195] Power control for PUCCH is configured or accumulated via DL Grant (carried by DCI 1_0 / 1 / 2).

[0196] Power control for PUSCH is configured or accumulated through Group DCI (carried by DCI 2_2with TPC-PUSCH-RNTI).

[0197] Power control for PUSCH is configured or accumulated through Group DCI (carried by DCI 2_2 with TPC-PUCCH-RNTI).

[0198] For SRS power control, settings or accumulation are made through Group DCI (carried by DCI 2_3 with TPC-SRS-RNTI).

[0199] Please refer to Figure 1, which is a schematic diagram of the architecture of the communication system 1000 used in the embodiments of this application. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 and a core network 200. Optionally, the communication system 1000 may also include an Internet 300. The RAN 100 includes at least one RAN node (110a and 110b in Figure 1, collectively referred to as 110), and may also include at least one terminal (120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal 120 is wirelessly connected to the RAN node 110, and the RAN node 110 is wirelessly or wiredly connected to the core network 200. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 can be independent and different physical devices, or they can be the same physical device integrating the logical functions of the core network equipment and the logical functions of the RAN node. Terminals can be connected to each other, as can RAN nodes, via wired or wireless means.

[0200] RAN100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, or a future radio access system as defined in the 3rd generation partnership project (3GPP). RAN100 can also include two or more of the above-mentioned different radio access systems. RAN100 can also be an open RAN (O-RAN).

[0201] RAN nodes, also known as radio access network devices, RAN entities, or access nodes, are used to help terminals access communication systems wirelessly. In one application scenario, an RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next-generation NodeB (gNB) in a 5G mobile communication system, a next-generation base station in a 6G mobile communication system, or a base station in a future mobile communication system. RAN nodes can be macro base stations (as shown in Figure 1, 110a), micro base stations or indoor stations (as shown in Figure 1, 110b), and can also be relay nodes or donor nodes.

[0202] In another application scenario, multiple RAN nodes can collaborate to help terminals achieve wireless access, with different RAN nodes implementing different functions of the base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU performs the functions of the base station's Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP), and can also perform the functions of the Service Data Adaptation Protocol (SDAP). The DU performs the functions of the base station's Radio Link Control (RANC) and Medium Access Control (MAC) layers, and can also perform some or all of the physical layer functions. For specific descriptions of these protocol layers, refer to the relevant 3GPP technical specifications. The RU can be used to implement radio frequency signal transmission and reception. The CU and DU can be two independent RAN nodes or integrated into the same RAN node, such as within a baseband unit (BBU). The RU can be included in radio frequency equipment, such as in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane.

[0203] In different systems, RAN nodes may have different names. For example, in an open access network (open RAN, O-RAN, or ORAN) system, a CU can also be called an O-CU (open CU), a DU can also be called an O-DU, a CU-CP can also be called an O-CU-CP, a CU-UP can also be called an O-CU-UP, and a RU can also be called an O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0204] Communication between access network devices and terminal devices follows a specific protocol layer structure. This protocol layer may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of the following: radio resource control (RRC) layer, packet data convergence protocol (PDCP) layer, radio link control (RLC) layer, media access control (MAC) layer, or physical (PHY) layer, etc. The user plane protocol layer may include at least one of the following: service data adaptation protocol (SDAP) layer, PDCP layer, RLC layer, MAC layer, or physical layer, etc.

[0205] The correspondence between network elements and their achievable protocol layer functions in the ORAN system can be found in Table 1 below.

[0206] Table 1

[0207] For ease of description, the following text uses a base station as an example of a RAN node.

[0208] A terminal is a device with wireless transceiver capabilities, capable of sending signals to or receiving signals from a base station. Terminals can also be called terminal equipment, user equipment (UE), mobile station, mobile terminal, etc. Terminals can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, etc. Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal.

[0209] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0210] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 1 can be configured as a mobile base station. For terminals 120j that access the wireless access network 100 through 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol. In this case, relative to 110a, 120i is also a base station. Therefore, both base stations and terminals can be collectively referred to as communication devices. 110a and 110b in Figure 1 can be called communication devices with base station functions, and 120a-120j in Figure 1 can be called communication devices with terminal functions.

[0211] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0212] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0213] In a communication system (such as the system shown in Figure 1), the signal transmitted by the transmitter is affected by path loss (or path drop) during its propagation in the wireless channel, resulting in a decrease in signal strength by the time it reaches the receiver. Therefore, the transmitter needs to adjust its signal transmission power appropriately to compensate for the impact of path loss. For example, in free space, the intensity of electromagnetic waves decreases with increasing propagation distance; the loss incurred by electromagnetic waves during free space propagation is called path loss. The electromagnetic wave signal transmitted by the transmitter is affected by path loss during its propagation in the wireless channel, resulting in a decrease in signal strength by the time it reaches the receiver. Therefore, when the receiver is far away, the transmitter needs to adjust its signal transmission power appropriately to compensate for the impact of path loss.

[0214] Generally, during signal transmission and reception in network devices, the direction of the transmit beam used to send downlink signals is the same as the direction of the receive beam used to receive uplink signals. Accordingly, for a terminal device, it can determine the downlink path loss based on the received downlink signal (e.g., a downlink reference signal) and adjust the transmit power of the uplink signal based on the downlink path loss.

[0215] For example, a network device can indicate the transmit power of a downlink reference signal to a terminal device. After receiving the downlink reference signal, the terminal device can determine the path loss based on the received power and the transmit power of the downlink reference signal. Subsequently, the terminal device can determine the transmit power of the uplink transmission signal based on the path loss (e.g., this determination process can refer to section P above). PUSCH,b,f,c (i,j,q d ,l) or P PUCCH,b,f,c (i,q u ,q d ,l) or P SRS,b,f,c (i,q s The implementation process of l).

[0216] For example, the terminal device can estimate the path loss (or path loss) through a downlink reference signal (such as SSB or CSI-RS), where the path loss value satisfies: PL = referenceSignalPower-higher layer filtered RSRP;

[0217] Here, PL represents path loss, referenceSignalPower can be understood as the power of the reference signal transmitted by the network device, and higher layer filtered RSRP can be understood as the power of the reference signal received by the terminal. This power value is filtered by higher layers (the higher layer filtering configuration is defined by QuantityConfig). The difference between the two is the path loss.

[0218] Generally, the downlink reference signal used for path loss estimation can be called the path loss reference signal (PL RS). For example, when PL RS is SSB, referenceSignalPower = ss - PBCH - Blockpower, where ss - PBCH - Blockpower is configured by the network device and represents the transmission power of the SSB; when PL RS is CSI-RS, referenceSignalPower = ss - PBCH - Blockpower + powerControlOffsetSS, where powerControlOffsetSS is the offset between the CSI-RS and the SSB power configured by the network device, and its value is 0 when it is not configured.

[0219] Furthermore, when a terminal device performs uplink transmission, such as sending PUSCH / PUCCH / SRS, it first determines the path loss reference signal, then calculates the downlink path loss value according to the aforementioned rules, and finally performs path loss compensation during uplink transmission. In other words, in the above implementation process, before a terminal device can perform uplink transmission with a network device, it needs to receive the downlink reference signal from that network device, determine the path loss based on the downlink reference signal, and then determine the uplink transmission power based on the path loss before it can perform uplink transmission to that network device.

[0220] In the above process, the uplink transmission method of the terminal device is designed based on the same transmit and receive beams of the network devices. In communication systems, to improve the flexibility of network device deployment, the transmit and receive beam directions of the network devices may be different.

[0221] For example, in network equipment, if the distance between the antenna panel used to transmit signals and the antenna panel used to receive signals is large, the communication beam between the same terminal device and these two antenna panels may have a significant difference.

[0222] For example, taking Figure 2 as an example, the network device containing the transmitting module capable of sending downlink signals may connect one or more receiving modules solely for receiving uplink signals via wired or wireless connections. These receiving modules can be called uplink-only (UL Only) modules or UL Only nodes (as shown by nodes 1 and 2 in Figure 2). Terminal devices 1, 2, and 3 can all receive downlink signals through the network device in Figure 2. Uplink signals sent by terminal device 1 can be transmitted through node 1, uplink signals sent by terminal device 2 can be transmitted through the network device, and uplink signals sent by terminal device 3 can be transmitted through node 2. UL Only nodes may not be configured with downlink resources or the network device may lack devices for downlink transmission, meaning these UL Only nodes only have uplink receiving capabilities and do not actively transmit any signals. Therefore, uplink capacity can be increased without increasing network interference. Furthermore, since no transmit RF link is required, the cost of UL Only nodes is significantly reduced. In this case, the transmitting module for sending downlink signals and the receiving module for receiving uplink signals are far apart, which may result in significant differences in their communication beams.

[0223] In the above process, when the transmit and receive beam directions of network devices are different or have large differences, due to the large difference between the transmission loss of uplink signals and the transmission loss of downlink signals, the uplink transmission method designed based on the same transmit and receive beams of network devices will lead to a large deviation in the adjustment of transmit power, thereby affecting the uplink transmission performance.

[0224] To address the aforementioned problems, this application provides a communication method and related apparatus, which will be described in detail below with reference to the accompanying drawings.

[0225] Please refer to Figure 3, which is a schematic diagram of an implementation of the communication method provided in this application. The method includes the following steps.

[0226] It should be noted that, in the following text, Figure 3 uses the first communication device and other communication devices (such as the second communication device) as examples to illustrate the method in this interactive illustration, but this application does not limit the execution subject of this interactive illustration. For example, the communication device can be a communication device (such as a terminal device or a network device), or a chip, baseband chip, modem chip, system-on-chip (SoC) chip containing a modem core, system-in-package (SIP) chip, communication module, chip system, processor, logic module, or software in the communication device.

[0227] S301. The second communication device transmits a first downlink reference signal, and correspondingly, the first communication device receives the first downlink reference signal. The received power of the first downlink reference signal is used to determine the first path loss.

[0228] S302. The second communication device sends first information, and correspondingly, the first communication device receives the first information. The first information is used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, which is used for uplink transmission.

[0229] In this application, the terms path loss (PL), transmission loss, signal attenuation, signal attenuation loss, attenuation loss, transmission loss, signal loss, transmission path loss, path loss estimate, and path loss estimate are interchangeable. Correspondingly, path loss offset can be replaced by path loss offset, transmission loss offset, signal attenuation offset, signal attenuation loss offset, attenuation loss offset, transmission loss offset, signal loss offset, transmission path loss offset, offset of path loss estimate, or offset of path loss estimate, etc.

[0230] It should be understood that the first path loss is the path loss determined by the first communication device based on a first downlink reference signal, which can be a path loss reference signal. For example, the path loss reference signal can be a synchronization signal / physical broadcast channel block (SSB or S-SS / PSBCH block), the synchronization signal in the SSB, the demodulation reference signal in the SSB, or the channel state information reference signal (CSI-RS), etc. After receiving the first downlink reference signal, the first communication device can determine the first path loss based on the received power of the received first downlink reference signal. For example, the first path loss can be determined by the difference between the received power and the transmitted power of the downlink reference signal, and the transmitted power of the downlink reference signal can be configured or pre-configured by the network device.

[0231] It should be understood that the second path loss is used for uplink transmission (or, in other words, the second path loss is associated with uplink transmission). This can be understood as the first communication device determining the uplink transmission power based on the second path loss and performing uplink transmission based on that power. In other words, the second path loss can serve as one of the bases for determining the uplink transmission power of the first communication device.

[0232] It should be understood that during the uplink transmission process of the first communication device, the first communication device may send one or more of the following: uplink signal, uplink information, uplink data, and uplink signaling.

[0233] For example, the uplink transmission can be carried on one or more channels among the physical uplink control uplink channel (PUCCH), physical uplink shared channel (PUSCH), and physical random access channel (PRACH).

[0234] For example, the uplink information can be one or more of the following: Uplink Control Information (UCI), Scheduling Request (SR), Channel State Information (CSI), and Hybrid Automatic Repeat Request (HARQ).

[0235] For example, the uplink signal can be a channel sounding reference signal (SRS), an uplink phase noise tracking reference signal (PTRS), or an uplink positioning signal (RS), etc.

[0236] In one possible implementation of the method shown in Figure 3, the method further includes: the first communication device receiving second information indicating that the path loss offset information is associated with the first downlink reference signal, or the second information indicating that the path loss offset information is associated with a plurality of downlink reference signals, the plurality of downlink reference signals including the first downlink reference signal. In other words, the first communication device may also receive the second information so that the first communication device can determine, based on the second information, one or more downlink reference signals associated with the path loss offset information indicated by the first information.

[0237] It should be understood that the path loss offset information is associated with a certain downlink reference signal. This can be understood as the path loss offset information being used to adjust (or modify, or update) the downlink path loss determined by the downlink reference signal.

[0238] In one possible implementation of the method shown in Figure 3, the method further includes: the first communication device receiving third information, the third information indicating that the path loss offset information is used for uplink transmission of a first terminal device (e.g., the first communication device is the first terminal device or a module in the first terminal device), or the third information indicating that the path loss offset information is used for uplink transmission of one or more terminal devices in a first cell. In other words, the first communication device can also receive third information so that the first communication device can determine, based on the third information, whether the path loss offset information indicated by the first information is a UE-specific configuration or a cell-specific configuration, and can also realize multiple configuration scopes of the path loss offset information to improve the flexibility of the scheme implementation.

[0239] Based on the scheme shown in Figure 3, the first communication device can receive a first downlink reference signal and first information, determine a first path loss through the received power of the first downlink reference signal, and determine path loss offset information through the first information. Furthermore, the first communication device can determine a second path loss based on the path loss offset information and the first path loss, and transmit an uplink signal based on the second path loss. In other words, the first communication device can adjust the downlink path loss (i.e., the first path loss) based on the path loss offset information indicated by the first information to reduce the deviation in path loss measurement, improve the accuracy of uplink power control, and thus improve uplink transmission performance.

[0240] As an example, taking uplink transmission as an example of a terminal device sending uplink signals / data / signaling at the PUSCH, the terminal device's transmit power P PUSCH,b,f,c (i,j,q d ,l) Satisfying Method Four:

[0241] Where, q d This indicates the identifier or index of the first downlink reference signal, PassLossOffest(q d The parameter ) is used to represent the path loss offset information associated with the first downlink reference signal. The meanings of other parameters can be found in the description of Method 1 above.

[0242] Alternatively, considering the path loss of the first downlink reference signal, it can be corrected using a path loss correction factor (α). b,f,c (j)) is corrected, and the path loss offset information is also related to the first downlink reference signal. Therefore, the path loss offset information can also be corrected through α. b,f,c (j) Make corrections to improve the transmission power P of the terminal device. PUSCH,b,f,c (i,j,q d ,l) Satisfying Method Five:

[0243] Understandably, apart from PUSCH, other uplink transmissions (such as SRS, PUCCH, etc.) can refer to the implementation process of Method 4 or Method 5 above.

[0244] Therefore, the terminal equipment can measure the path loss of the first downlink reference signal (i.e., (PL)). b,f,c (q d Add or subtract the path loss offset value associated with the first downlink reference signal to obtain the uplink path loss estimate, and use the adjusted path loss value for uplink transmission.

[0245] As can be seen from the above implementation process, the path loss offset value can be a parameter for power control adjustment of uplink transmissions associated with one or more downlink reference signals. This parameter can be open-loop power control of the uplink transmission, which can be associated with the downlink reference signal and some pre-configured parameters. In other words, the path loss offset parameter can also be understood as the open-loop path loss parameter, the open-loop path loss offset parameter, etc.

[0246] Generally, in the uplink transmission process, in addition to open-loop power control, closed-loop power control can also be used to achieve precise adjustment of the uplink power control of the terminal device. Current closed-loop power control related parameters (such as the parameter f described above) b,f,c (i,l),h b,f,c (i,l), g b,f,c (i, l, etc.) are designed based on the same transmit and receive beams of network devices. As mentioned above, when the transmit and receive beams of network devices are not the same or have large differences, these closed-loop power control related parameters may no longer be applicable. Therefore, the method shown in Figure 3 can further improve the closed-loop power control related parameters. The following will describe them with some implementation examples.

[0247] Example 1 demonstrates how different power control ranges can be used to improve the parameters related to closed-loop power control.

[0248] In Example 1, the method shown in Figure 3 further includes: the first communication device receiving fourth information, which is used to determine the first TPC parameter set in the N transmit power control (TPC) parameter set, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; the first communication device receiving fifth information, which is used to indicate the first TPC parameter in the first TPC parameter set, which is used for uplink transmission.

[0249] In other words, the first communication device can determine the first TPC parameter set from N TPC parameter sets corresponding to different power control ranges based on the received fourth information. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on the fifth information, and perform uplink transmission based on the first TPC parameter. In this way, compared with the power control adjustment method that achieves uplink transmission based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0250] It should be noted that the power control parameters indicated in the seventh information can be parameters from the uplink closed-loop power control process. Uplink closed-loop power control can be a method in which network devices (such as the second communication device) adjust the uplink transmission power of terminal devices by sending commands. Generally, traditional uplink closed-loop power control is applied to a single physical layer channel or signal (such as parameter f in method one below). b,f,c (i,l), parameter h in method two b,f,c (i,l) or parameter g in method three b,f,c (i,l)), or it refers to a single physical layer signal or the state corresponding to the signal (here, the state is also called a closed-loop power control loop). In the above scheme, the power control parameters indicated by the seventh information can be used to control / adjust the uplink transmission power corresponding to multiple physical layer channels or signals (or multiple closed-loop power control states or loops).

[0251] For example, when the uplink transmission is the terminal device sending uplink signals / data / signaling at the PUSCH, the first TPC parameter can be f in the aforementioned method four or method five. b,f,c (i,l). It is understandable that, apart from PUSCH, other uplink transmissions (such as SRS, PUCCH, etc.) can refer to the implementation process of PUSCH.

[0252] Alternatively, parameter set can be replaced with other terms, such as parameter group, parameter combination, etc.

[0253] Optionally, the N TPC parameter sets can be pre-configured or configured by network devices or servers; no limitation is made here.

[0254] It should be understood that the first TPC parameter is used for uplink transmission. This can be interpreted as the first communication device determining the uplink transmission power based on the first TPC parameter and performing uplink transmission based on that power. In other words, the first TPC parameter can serve as one of the bases for determining the uplink transmission power of the first communication device.

[0255] In one possible implementation of Example 1, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same. Specifically, for the N TPC parameter sets corresponding to different power control ranges, the index sets corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate TPC parameters for different power control ranges through the same index set, thereby reducing the overhead of the indication and reducing the implementation complexity.

[0256] Optionally, the indexes in this index set are indicated by the first field in the downlink control information (DCI), and the fifth information is carried in the first field. In other words, the index sets corresponding to different TPC parameter sets can be the same, and the information indicating the indexes in this index set (such as the fifth information) can be carried in the first field of the DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead, and the method of reusing the same field for indication can also be compatible with the traditional indication method.

[0257] For example, the first field can be a field in DCI used to indicate TPC parameters, and the field name can be TPC Command, or other names, which are not limited here. It is understood that the function of the first field can be to control the transmission power of uplink transmission (or uplink signals), such as uplink signals including one or more of the following: uplink data channel signals (e.g., PUSCH signals), uplink control channel signals (e.g., PUCCH signals), and uplink reference signals (e.g., SRS).

[0258] Optionally, in the N TPC parameter sets, each TPC parameter set includes TPC parameters comprising accumulated and / or absolute power control values, enabling adjustments to uplink power control and improving the flexibility of the solution implementation. Furthermore, the second communication device can configure the TPC parameters to the first communication device as accumulated and / or absolute power control values, for example, through RRC messages, DCI, MAC CE, or other messages / signaling.

[0259] For example, if the second communication device configures the TPC parameter to the cumulative value of power control via RRC messages, and subsequently, after the second communication device indicates a certain TPC parameter via fifth information (e.g., DCI), the first communication device can add or subtract the current transmit power value from the TPC (i.e., the cumulative value of power control), and the result can be used for uplink transmission (e.g., using the result as f in the aforementioned method four or method five). b,f,c (i,l)).

[0260] For example, if the second communication device configures the TPC parameter to the absolute value of power control via RRC messages, and subsequently the second communication device indicates a certain TPC parameter via fifth information (e.g., DCI), the first communication device can use that TPC parameter (i.e., the cumulative value of power control) for uplink transmission (e.g., using the cumulative value of power control as f in the aforementioned method four or method five). b,f,c (i,l)).

[0261] Similarly, in Implementation Example 1, the method further includes: the first communication device receiving sixth information, the sixth information indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third information indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell. In this way, the first communication device can determine, based on the sixth information, whether the first TPC parameter set indicated by the first information is a UE-specific configuration or a cell-specific configuration, and can also realize multiple configuration scopes of the first TPC parameter set, thereby improving the flexibility of the solution implementation.

[0262] As one possible implementation of Example 1 (denoted as Method A), all N TPC parameter sets can be pre-configured TPC parameters of the protocol / standard. Taking the N TPC parameter sets as 2 (i.e., N=2) TPC parameter sets as an example, it can be implemented using the following Table 2.

[0263] Table 2

[0264] It should be noted that the power control range differs for different TPC parameter sets.

[0265] For example, in Table 2, the power control range corresponding to Accumulated in TPC parameter set 1 is [-1, 3]. Correspondingly, the power control range corresponding to Accumulated in TPC parameter set 2 is different from [-1, 3]. For example, the power control range corresponding to Accumulated in TPC parameter set 2 is [-2, 6], and the values ​​of parameters A1, A2, A3, and A4 can be -2, 0, 2, and 6, respectively. As another example, the power control range corresponding to Accumulated in TPC parameter set 2 is [-3, 9], and the values ​​of parameters A1, A2, A3, and A4 can be -3, 0, 3, and 9, respectively.

[0266] For example, in Table 2, the power control range corresponding to Absolute in TPC parameter set 1 is [-4, 4]. Correspondingly, the power control range corresponding to Absolute in TPC parameter set 2 is different from [-4, 4]. For instance, the power control range corresponding to Absolute in TPC parameter set 2 is [-8, 8], and the corresponding values ​​for parameters B1, B2, B3, and B4 can be -8, -4, 4, and 8. Similarly, the power control range corresponding to Absolute in TPC parameter set 2 is [-10, 10], and the corresponding values ​​for parameters B1, B2, B3, and B4 can be -10, -5, 5, and 10.

[0267] Optionally, in method A, the fourth information includes the index of the first TPC parameter set (e.g., index "1" corresponding to TPC parameter set 1 in Table 2, or index "2" corresponding to TPC parameter set 2 in Table 2, etc.). The overhead of the indication can be reduced by using the index as an indication method.

[0268] As another possible implementation of Example 1 (denoted as Method B), one of the N TPC parameter sets can be TPC parameters configured by the network device or preset by the protocol / standard, while the other TPC parameter sets can be determined by the fourth information.

[0269] Specifically, in method B, a certain TPC parameter set in the N TPC parameter sets can be "TPC parameter set 1" in Table 2. The fourth information can be used to indicate the first TPC parameter set. Specifically, the fourth information can be used to indicate the correspondence between the parameters contained in the "first TPC parameter set" and the parameters contained in "TPC parameter set 1", thereby indicating the first TPC parameter set.

[0270] For example, in mode B, the correspondence of the fourth information indication can be a multiple (or coefficient, ratio, etc.) or index of the multiple (or index of the coefficient, index of the ratio, etc.) of the parameters contained in the "first TPC parameter set" relative to the parameters contained in the "TPC parameter set 1", so that the first communication device determines the first TPC parameter set based on the multiple indicated by the fourth information and the pre-configured "TPC parameter set 1".

[0271] For example, taking the multiple indicated by the fourth information as 2, the first communication device can determine the parameters included in the first TPC parameter set based on "TPC parameter set 1" (the value of TPC parameter set 1 is the same as the value of TPC parameter set 1 in Table 2) and "multiple is 2", as shown in Table 3 below.

[0272] Table 3

[0273] For example, taking the multiple indicated by the fourth information as 3, the first communication device can determine the parameters included in the first TPC parameter set based on "TPC parameter set 1" and "multiple of 3", as shown in Table 4 below.

[0274] Table 4

[0275] Optionally, in mode A or mode B, the fifth information includes the index of the first TPC parameter in the first TPC parameter set (e.g., the index "0 / 1 / 2 / 3" corresponding to the transmission power control command field in Table 2, or other newly defined rows, such as "4 / 5 / 6 / 7"). The index-based indication method can reduce the indication overhead.

[0276] As can be seen from the examples shown in Table 2, in the above implementation example one, taking the first communication device as the terminal device and the second communication device as the network device as an example, the interaction process of the fourth and fifth information can be understood as the following process.

[0277] The fourth piece of information can be understood as: the network device instructs the terminal device on one of N mapping rules.

[0278] Among them, network devices and terminal devices can be pre-configured with the N mapping rules. The N mapping rules correspond to N sets of power control adjustment values ​​(i.e., the N mapping rules correspond to N sets of TPC parameters). Each mapping rule predefines the mapping relationship between the values ​​of one set of binary bits and one set of power control adjustment values ​​(i.e., one set of TPC parameters). Accordingly, the fourth information contains the index of one of the N mapping rules.

[0279] Optionally, this fourth message can be carried in an RRC message or a MAC CE.

[0280] The fifth piece of information can be understood as: the network device sending a command to the terminal device for adjusting the uplink transmission power.

[0281] Optionally, the instruction can be transmitted to the terminal device via DCI or MAC CE.

[0282] Optionally, the content of the instruction is one of the values ​​of a set of binary bits, and the corresponding power control adjustment value is determined by a certain mapping rule indicated by the fourth information mentioned above.

[0283] In this way, the network device can configure a mapping rule index for the terminal device using the fourth information, that is, configure one mapping rule for the terminal device from N mapping rules. The terminal device receives this instruction to determine the configuration index of the mapping rule and the mapping rule between the uplink power adjustment field and the uplink power adjustment value (for example, the mapping rule is the first mapping rule between TPC parameter set 1 and the TPC command field in Table 2, or the second mapping rule between TPC parameter set 2 and the TPC command field in Table 2). Subsequently, the network device can use the instruction contained in the fifth information to indicate one of the power control adjustment values ​​from the set of power control adjustment values ​​corresponding to this mapping rule.

[0284] For example, in Table 2, taking N=2 as an example, the pre-configured N mapping rules can be two mapping rules. The first mapping rule can be the mapping rule between TPC parameter set 1 and TPC command field in Table 2, and the second mapping rule can be the mapping rule between TPC parameter set 2 and TPC command field in Table 2.

[0285] In the above process, the network device can use the fourth information to indicate one of the two mapping rules to the terminal device; for example, the first mapping rule can be the mapping relationship between the index in the first column of the TPC command field in Table 2 and TPC parameter set 1, and the second mapping rule can be the mapping relationship between the index in the first column of the TPC command field in Table 2 and TPC parameter set 2.

[0286] In the above process, the network device can use the fifth information to indicate to the terminal device one of the power control adjustment values ​​from a set of power control adjustment values ​​corresponding to one of the mapping rules. For example, the fifth information may include an index in the first column of Table 2, namely index 0, 1, 2 or 3, so that the terminal device can determine the corresponding TPC parameter based on the index.

[0287] Example 2 demonstrates how newly defined power control parameters can be used to uniformly configure closed-loop power control parameters for multiple channels or loops.

[0288] In Example 2, the method shown in Figure 3 further includes: the first communication device receiving seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmission in at least two uplink channels.

[0289] In other words, the first communication device can use the power control parameters indicated by the seventh information to adjust the power control of uplink transmissions in at least two power control states on the same uplink channel (or to adjust the power control of uplink transmissions in different uplink channels). The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, thereby saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0290] It should be understood that the power control parameters indicated by the seventh information can be used for power control of uplink transmission in multiple power control states of the uplink channel. This can be understood as the first communication device determining the transmission power of the uplink transmission in any power control state of the same channel based on these power control parameters, and performing uplink transmission based on this transmission power. In other words, these power control parameters can serve as one of the bases for determining the transmission power of the first communication device for uplink transmission in any power control state of the same channel.

[0291] It should be understood that the power control parameters indicated by the seventh information can be used for power control of uplink transmission in at least two uplink channels. This means that the first communication device can determine the transmit power for uplink transmission in the at least two uplink channels based on these power control parameters, and perform uplink transmission based on this transmit power. In other words, these power control parameters can serve as one of the bases for determining the transmit power of the first communication device for uplink transmission in any of the at least two uplink channels.

[0292] Optionally, the power control parameters indicated by the seventh information can be used for uplink power control in multiple power control states of the same channel (or uplink power control in different channels). For this purpose, the power control parameters indicated by the seventh information can be unified transmission power control (TPC) parameters, channel common parameters, loop common parameters, large-scale transmission power control (TPC for scale), or other expressions, which are not limited here.

[0293] In one possible implementation of Example 2, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two uplink channels. Thus, the first communication device can determine, based on the eighth information, that the power control adjustment range applied by the power control parameter indicated by the seventh information is different power control states (or different channels) of the same channel.

[0294] In one possible implementation of Example 2, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameter is used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameter is used for uplink transmission of one or more terminal devices in the first cell. Thus, the first communication device can determine, based on the ninth information, whether the power control parameter indicated by the seventh information is a UE-specific configuration or a cell-specific configuration, and can also implement multiple configuration ranges for the power control parameter indicated by the seventh information, thereby improving the flexibility of the solution implementation.

[0295] As an example, taking uplink transmission as an example of a terminal device sending uplink signals / data / signaling at the PUSCH, the terminal device's transmit power P PUSCH,b,f,c (i,j,q d ,l) Satisfying Method Six:

[0296] Compared to method four mentioned earlier, additional parameters can be added. This indicates the power control parameters indicated by the seventh information above. The meanings of other parameters can be found in the descriptions of Method 1 and Method 4 above.

[0297] Alternatively, considering the path loss of the first downlink reference signal, it can be corrected using a path loss correction factor (α). b,f,c (j)) is corrected, and the path loss offset information is also related to the first downlink reference signal. Therefore, the path loss offset information can also be corrected through α. b,f,c (j) Make corrections to improve the transmission power P of the terminal device. PUSCH,b,f,c (i,j,q d ,l) Satisfying mode seven:

[0298] Understandably, apart from PUSCH, other uplink transmissions (such as SRS, PUCCH, etc.) can refer to the implementation process of Method 6 or Method 7 above.

[0299] Thus, by configuring a unified power control adjustment method, the first communication device (e.g., terminal equipment) can quickly perform uplink closed-loop power control, saving closed-loop power control overhead.

[0300] It should be noted that the implementation of Example 1 and Example 2 above can be done without relying on the method shown in Figure 3. The following will introduce them in conjunction with the processes shown in Figure 4 and Figure 5.

[0301] Please refer to Figure 4, which is a schematic diagram of another implementation of the communication method provided in this application. The method includes the following steps.

[0302] S401. The second communication device sends fourth information, and correspondingly, the first communication device receives the fourth information. The fourth information is used to determine a first TPC parameter set from N transmission power control (TPC) parameter sets, where N is an integer greater than 1; the power control range corresponding to different TPC parameter sets is different within these N TPC parameter sets.

[0303] S402. The second communication device sends a fifth message, and correspondingly, the first communication device receives the fifth message. The fifth message indicates a first TPC parameter in the first TPC parameter set, which is used for uplink transmission.

[0304] Based on the scheme in Figure 4, the first communication device can determine the first TPC parameter set from N TPC parameter sets corresponding to different power control ranges by receiving the fourth information. Subsequently, the first communication device can determine the first TPC parameter within the power control range indicated by the first TPC parameter set based on the fifth information, and perform uplink transmission based on the first TPC parameter. In this way, compared with the power control adjustment method that achieves uplink transmission based on only one power control range corresponding to one TPC parameter set, in the above scheme, the first communication device can achieve uplink power control adjustment based on two or more power control ranges corresponding to two or more TPC parameter sets. This allows for flexible power control adjustment within a wider power control range and achieves more precise uplink power control, thereby improving uplink transmission performance.

[0305] For example, the first TPC parameter can be f in the aforementioned method one. b,f,c (i,l), h in method two b,f,c (i,l), g in method three b,f,c (i,l).

[0306] In one possible implementation of the method shown in Figure 4, the index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same. Specifically, for the N TPC parameter sets corresponding to different power control ranges, the index sets corresponding to different TPC parameter sets can be the same. That is, the second communication device can indicate TPC parameters for different power control ranges through the same index set, thereby reducing the overhead of the indication and reducing the implementation complexity.

[0307] In one possible implementation of the method shown in Figure 4, the indexes in the index set are indicated by the first field in the DCI, and the fifth information is carried in the first field. Specifically, the index sets corresponding to different TPC parameter sets can be the same, and the information indicating the indexes in the index set (e.g., the fifth information) can be carried in the first field in the DCI. That is, different TPC parameter sets can reuse the first field to indicate different power control ranges, which can reduce overhead, and the method of reusing the same field for indication can also be compatible with the traditional indication method.

[0308] Optionally, the fifth information includes the index of the first TPC parameter in the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0309] Optionally, the fourth information includes an index of the first TPC parameter set, and the index-based indication method can reduce the indication overhead.

[0310] Optionally, in the N TPC parameter sets, each TPC parameter set includes the cumulative value and / or absolute value of power control. Specifically, the TPC parameter set can be used to adjust the uplink power control by adjusting the cumulative value and / or absolute value of power control, thereby improving the flexibility of the solution implementation.

[0311] In one possible implementation of the method shown in Figure 4, the method further includes: the first communication device receiving sixth information, the sixth information indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third information indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell. Thus, the first communication device can determine, based on the sixth information, whether the first TPC parameter set indicated by the first information is a UE-specific configuration or a cell-specific configuration, and can also realize multiple configuration scopes of the first TPC parameter set, thereby improving the flexibility of the solution implementation.

[0312] It should be noted that the method shown in Figure 4 can be referred to in other descriptions of the implementation example 1 above, and will not be repeated here.

[0313] Optionally, the method shown in Figure 4 can also implement the scheme in Example 2 above. For example, the method shown in Figure 4 further includes: the first communication device receiving seventh information, which is used to indicate power control parameters; the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels. Specifically, the first communication device can use the power control parameters indicated by the seventh information to adjust the power control of uplink transmission in at least two power control states on the same uplink channel (or to adjust the power control of uplink transmission in different uplink channels). The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states in the same uplink channel to save power control parameter overhead and accelerate the closed-loop power control convergence speed, thereby improving uplink transmission performance.

[0314] As an example, taking uplink transmission as an example of a terminal device sending uplink signals / data / signaling at the PUSCH, the terminal device's transmit power P PUSCH,b,f,c (i,j,q d ,l) Satisfying mode eight:

[0315] Compared to method one mentioned earlier, f b,f,c (i,l) is the first TPC parameter, and additional parameters can be added. This indicates the power control parameters indicated by the seventh information above. The meanings of other parameters can be found in the description of Method 1 above.

[0316] Understandably, apart from PUSCH, other uplink transmissions (such as SRS, PUCCH, etc.) can refer to the implementation process of Method 8 above.

[0317] In one possible implementation of the method shown in Figure 4, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two uplink channels. Thus, the first communication device can determine, based on the eighth information, that the power control adjustment range applied by the power control parameter indicated by the seventh information is different power control states (or different channels) of the same channel.

[0318] In one possible implementation of the method shown in Figure 4, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameter is used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameter is used for uplink transmission of one or more terminal devices in the first cell. Thus, the first communication device can determine, based on the ninth information, whether the power control parameter indicated by the seventh information in the first information is a UE-specific configuration or a cell-specific configuration, and can also implement multiple configuration ranges for the power control parameter indicated by the seventh information, thereby improving the flexibility of the solution implementation.

[0319] Please refer to Figure 5, which is a schematic diagram of another implementation of the communication method provided in this application. The method includes the following steps.

[0320] S501. The second communication device sends a seventh message, and correspondingly, the first communication device receives the seventh message. The seventh message is used to indicate power control parameters; the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels.

[0321] S502. The first communication device determines the power control parameter based on the seventh information.

[0322] Based on the scheme shown in Figure 5, the first communication device can adjust the uplink transmission power control for at least two power control states on the same uplink channel (or adjust the uplink transmission power control for different uplink channels) using the power control parameters indicated by the seventh information. The power control deviation caused by the different or significantly different transmit and receive beam directions of network devices is mainly due to large-scale channel differences. Therefore, the power control parameters indicated by the seventh information can be used to uniformly adjust multiple uplink channels or multiple different power control states within the same uplink channel, saving power control parameter overhead and accelerating the closed-loop power control convergence speed to improve uplink transmission performance.

[0323] In one possible implementation, the method further includes: the first communication device receiving eighth information, the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth information indicating that the power control parameter is used for power control of uplink transmission in at least two uplink channels. Thus, the first communication device can determine, based on the eighth information, that the power control adjustment range applied by the power control parameter indicated by the seventh information is different power control states (or different channels) of the same channel.

[0324] In one possible implementation, the method further includes: the first communication device receiving ninth information, the ninth information indicating that the power control parameter is used for uplink transmission of the first terminal device, or the ninth information indicating that the power control parameter is used for uplink transmission of one or more terminal devices in the first cell. Thus, the first communication device can determine, based on the ninth information, whether the power control parameter indicated by the seventh information in the first information is a UE-specific configuration or a cell-specific configuration, and can also implement multiple configuration ranges for the power control parameter indicated by the seventh information, thereby improving the flexibility of the solution implementation.

[0325] As an example, taking uplink transmission as an example of a terminal device sending uplink signals / data / signaling at the PUSCH, the terminal device's transmit power P PUSCH,b,f,c (i,j,q d ,l) Satisfying Method Nine:

[0326] Compared to method one mentioned earlier, additional parameters can be added. This indicates the power control parameters indicated by the seventh information above. The meanings of other parameters can be found in the description of Method 1 above.

[0327] It is understandable that, apart from PUSCH, other uplink transmissions (such as SRS, PUCCH, etc.) can refer to the implementation process of Method 9 above.

[0328] Please refer to Figure 6. This application embodiment provides a communication device 600, which can realize the functions of the second communication device or the first communication device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In this application embodiment, the communication device 600 can be the first communication device (or the second communication device), or it can be an integrated circuit or component inside the first communication device (or the second communication device), such as a chip.

[0329] It should be noted that the transceiver unit 602 may include a transmitting unit and a receiving unit, which are used to perform transmitting and receiving respectively.

[0330] In one possible implementation, when the device 600 is used to execute the method performed by the first communication device in the foregoing embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the transceiver unit 602 is used to receive a first downlink reference signal, the received power of which is used to determine a first path loss; the transceiver unit 602 is also used to receive first information, which is used to indicate path loss offset information; the processing unit 601 is used to determine a second path loss based on the path loss offset information and the first path loss, the second path loss being used for uplink transmission.

[0331] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the foregoing embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the processing unit 601 is used to determine a first downlink reference signal and first information; the transceiver unit 602 is used to transmit the first downlink reference signal, the received power of which is used to determine a first path loss; the transceiver unit 602 is also used to transmit the first information, which is used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, which is used for uplink transmission.

[0332] In one possible implementation, when the device 600 is used to execute the method performed by the first communication device in the aforementioned embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the transceiver unit 602 is used to receive fourth information, which is used to determine a first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; the transceiver unit 602 is also used to receive fifth information; the processing unit 601 is used to determine a first TPC parameter in the first TPC parameter set based on the fifth information, and the first TPC parameter is used for uplink transmission.

[0333] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the aforementioned embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the processing unit 601 is used to determine fourth information and fifth information; the transceiver unit 602 is used to send the fourth information, which is used to determine a first TPC parameter set in N TPC parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different N TPC parameter sets are different; the transceiver unit 602 is also used to send the fifth information, which is used to indicate the first TPC parameter in the first TPC parameter set.

[0334] In one possible implementation, when the device 600 is used to execute the method performed by the first communication device in the foregoing embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the transceiver unit 602 is used to receive seventh information, which is used to indicate power control parameters; the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels; the processing unit 601 is used to determine the power control parameters based on the seventh information.

[0335] In one possible implementation, when the device 600 is used to execute the method performed by the second communication device in the foregoing embodiments, the device 600 includes a processing unit 601 and a transceiver unit 602; the processing unit 601 is used to determine seventh information, which is used to indicate power control parameters; wherein, the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or, the power control parameters are used for power control of uplink transmission in at least two uplink channels; the transceiver unit 602 is used to transmit the seventh information.

[0336] It should be noted that the information execution process of the unit of the above-mentioned communication device 600 can be specifically described in the method embodiments shown above in this application, and will not be repeated here.

[0337] Please refer to Figure 7, which is another schematic structural diagram of the communication device 700 provided in this application. The communication device 700 includes a logic circuit 701 and an input / output interface 702. The communication device 700 can be a chip or an integrated circuit.

[0338] In Figure 6, the transceiver unit 602 can be a communication interface, which can be the input / output interface 702 in Figure 7, and the input / output interface 702 can include an input interface and an output interface. Alternatively, the communication interface can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0339] Optionally, the input / output interface 702 is used to receive a first downlink reference signal, the received power of which is used to determine a first path loss; the input / output interface 702 is also used to receive first information, which is used to indicate path loss offset information; the logic circuit 701 is used to determine a second path loss based on the path loss offset information and the first path loss, which is used for uplink transmission.

[0340] Optionally, logic circuit 701 is used to determine a first downlink reference signal and first information; input / output interface 702 is used to transmit the first downlink reference signal, the received power of the first downlink reference signal being used to determine a first path loss; input / output interface 702 is also used to transmit the first information, the first information being used to indicate path loss offset information; the path loss offset information and the first path loss are used to determine a second path loss, the second path loss being used for uplink transmission.

[0341] Optionally, the input / output interface 702 is used to receive fourth information, which is used to determine a first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; in these N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; the input / output interface 702 is also used to receive fifth information; the logic circuit 701 is used to determine a first TPC parameter in the first TPC parameter set based on the fifth information, and the first TPC parameter is used for uplink transmission.

[0342] Optionally, the logic circuit 701 is used to determine the fourth information and the fifth information; the input / output interface 702 is used to send the fourth information, which is used to determine the first TPC parameter set in the N TPC parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different N TPC parameter sets are different; the input / output interface 702 is also used to send the fifth information, which is used to indicate the first TPC parameter in the first TPC parameter set.

[0343] Optionally, the input / output interface 702 is used to receive seventh information, which is used to indicate power control parameters; the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels; the logic circuit 701 is used to determine the power control parameters based on the seventh information.

[0344] Optionally, logic circuit 701 is used to determine seventh information, which is used to indicate power control parameters; wherein, the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or, the power control parameters are used for power control of uplink transmission in at least two uplink channels; the input / output interface 702 is used to send the seventh information.

[0345] The logic circuit 701 and the input / output interface 702 can also perform other steps performed by the first or second communication device in any embodiment and achieve corresponding beneficial effects, which will not be elaborated here.

[0346] In one possible implementation, the processing unit 601 shown in FIG6 can be the logic circuit 701 in FIG7.

[0347] Optionally, the logic circuit 701 can be a processing device, the functions of which can be partially or entirely implemented in software.

[0348] Optionally, the processing apparatus may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform the corresponding processing and / or steps in any of the method embodiments.

[0349] Optionally, the processing device may consist of only a processor. A memory for storing computer programs is located outside the processing device, and the processor is connected to the memory via circuitry / wires to read and execute the computer programs stored in the memory. The memory and processor may be integrated together or physically independent of each other.

[0350] Optionally, the processing device may be one or more chips, or one or more integrated circuits. For example, the processing device may be one or more field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processing units (CPUs), network processors (NPs), digital signal processors (DSPs), microcontroller units (MCUs), programmable logic devices (PLDs), or other integrated chips, or any combination of the above chips or processors.

[0351] Please refer to Figure 8, which shows the communication device 800 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 800 can be the communication device as a terminal device in the above embodiments. The communication device shown in Figure 8 is implemented through a terminal device (or a component in the terminal device).

[0352] The present invention is a possible logical structure diagram of the communication device 800, which may include, but is not limited to, at least one processor 801 and a communication port 802.

[0353] In Figure 6, the transceiver unit 602 can be a communication interface, which can be the communication port 802 in Figure 8. The communication port 802 can include an input interface and an output interface. Alternatively, the communication port 802 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0354] Further optionally, the device may also include at least one of a memory 803 and a bus 804. In the embodiments of this application, the at least one processor 801 is used to control the operation of the communication device 800.

[0355] Furthermore, the processor 801 can be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0356] It should be noted that the communication device 800 shown in Figure 8 can be used to implement the steps implemented by the terminal device in the aforementioned method embodiments and achieve the corresponding technical effects of the terminal device. The specific implementation of the communication device shown in Figure 8 can be referred to the description in the aforementioned method embodiments, and will not be repeated here.

[0357] Please refer to Figure 9, which is a schematic diagram of the structure of the communication device 900 involved in the above embodiments provided in the embodiments of this application. Specifically, the communication device 900 can be a communication device as a network device in the above embodiments. The communication device shown in Figure 9 is implemented through a network device (or a component in a network device). The structure of the communication device can refer to the structure shown in Figure 9.

[0358] The communication device 900 includes at least one processor 911 and at least one network interface 914. Optionally, the communication device further includes at least one memory 912, at least one transceiver 913, and one or more antennas 915. The processor 911, memory 912, transceiver 913, and network interface 914 are connected, for example, via a bus. In this embodiment, the connection may include various interfaces, transmission lines, or buses, etc., and this embodiment is not limited thereto. The antenna 915 is connected to the transceiver 913. The network interface 914 enables the communication device to communicate with other communication devices through a communication link. For example, the network interface 914 may include a network interface between the communication device and core network equipment, such as an S1 interface, or a network interface between the communication device and other communication devices (e.g., other network devices or core network equipment), such as an X2 or Xn interface.

[0359] In Figure 6, the transceiver unit 602 can be a communication interface, which can be the network interface 914 in Figure 9. The network interface 914 can include an input interface and an output interface. Alternatively, the network interface 914 can also be a transceiver circuit, which can include an input interface circuit and an output interface circuit.

[0360] The processor 911 is primarily used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data from these programs, for example, to support the actions described in the embodiments of the communication device. The communication device may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily used to process communication protocols and communication data, while the CPU is primarily used to control the entire terminal device, execute software programs, and process data from these programs. The processor 911 in Figure 9 can integrate the functions of both a baseband processor and a CPU. Those skilled in the art will understand that the baseband processor and CPU can also be independent processors interconnected via technologies such as buses. Those skilled in the art will understand that a terminal device may include multiple baseband processors to adapt to different network standards, and multiple CPUs to enhance its processing capabilities. The various components of the terminal device can be connected via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The CPU can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, which is then executed by the processor to implement the baseband processing function.

[0361] The memory is primarily used to store software programs and data. The memory 912 can exist independently or be connected to the processor 911. Optionally, the memory 912 can be integrated with the processor 911, for example, integrated into a single chip. The memory 912 can store program code that executes the technical solutions of the embodiments of this application, and its execution is controlled by the processor 911. The various types of computer program code being executed can also be considered as drivers for the processor 911.

[0362] Figure 9 shows only one memory and one processor. In actual terminal devices, there may be multiple processors and multiple memories. Memory can also be called storage medium or storage device, etc. Memory can be a storage element on the same chip as the processor, i.e., an on-chip storage element, or it can be a separate storage element; this application does not limit this.

[0363] Transceiver 913 can be used to support the reception or transmission of radio frequency (RF) signals between a communication device and a terminal. Transceiver 913 can be connected to antenna 915. Transceiver 913 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 915 can receive RF signals. The receiver Rx of transceiver 913 receives the RF signals from the antennas, converts the RF signals into digital baseband signals or digital intermediate frequency (IF) signals, and provides the digital baseband signals or IF signals to processor 911 so that processor 911 can perform further processing on the digital baseband signals or IF signals, such as demodulation and decoding. Furthermore, the transmitter Tx in transceiver 913 is also used to receive modulated digital baseband signals or IF signals from processor 911, convert the modulated digital baseband signals or IF signals into RF signals, and transmit the RF signals through one or more antennas 915. Specifically, the receiver Rx can selectively perform one or more stages of downmixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency (IF) signal. The order of these downmixing and IF conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of upmixing and digital-to-analog conversion on the modulated digital baseband signal or digital IF signal to obtain a radio frequency signal. The order of these upmixing and IF conversion processes is also adjustable. The digital baseband signal and the digital IF signal can be collectively referred to as digital signals.

[0364] The transceiver 913 can also be called a transceiver unit, transceiver, transceiver device, etc. Optionally, the device in the transceiver unit that performs the receiving function can be regarded as the receiving unit, and the device in the transceiver unit that performs the transmitting function can be regarded as the transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit can also be called a receiver, input port, receiving circuit, etc., and the transmitting unit can be called a transmitter, transmitter, or transmitting circuit, etc.

[0365] It should be noted that the communication device 900 shown in Figure 9 can be used to implement the steps implemented by the network device in the aforementioned method embodiments and achieve the corresponding technical effects of the network device. The specific implementation of the communication device 900 shown in Figure 9 can be referred to the description in the aforementioned method embodiments, and will not be repeated here.

[0366] This application also provides a computer-readable storage medium for storing one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor performs the method described in the possible implementations of the first or second communication device in the foregoing embodiments.

[0367] This application also provides a computer program product (or computer program) that, when executed by a processor, executes the method described above for the possible implementation of the first or second communication device.

[0368] This application also provides a chip system including at least one processor for supporting a communication device in implementing the functions involved in the possible implementations of the communication device described above. Optionally, the chip system further includes an interface circuit that provides program instructions and / or data to the at least one processor. In one possible design, the chip system may also include a memory for storing the program instructions and data necessary for the communication device. The chip system may be composed of chips or may include chips and other discrete devices, wherein the communication device may specifically be the first communication device or the second communication device in the aforementioned method embodiments.

[0369] This application also provides a communication system, the network system architecture of which includes a first communication device and a second communication device in any of the above embodiments.

[0370] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0371] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0372] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes, or all or part of the 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 cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A communication method, characterized in that, include: Receive a first downlink reference signal, the received power of which is used to determine a first path loss; Receive first information, which is used to indicate road loss offset information; The path loss offset information and the first path loss are used to determine the second path loss, which is used for uplink transmission.

2. The method according to claim 1, characterized in that, The method further includes: Receive second information, the second information indicating that the path loss offset information is associated with the first downlink reference signal, or, the second information indicating that the path loss offset information is associated with multiple downlink reference signals, the multiple downlink reference signals including the first downlink reference signal.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Receive third information, the third information indicating that the path loss offset information is used for uplink transmission of the first terminal device, or, the third information indicating that the path loss offset information is used for uplink transmission of one or more terminal devices in the first cell.

4. The method according to any one of claims 1 to 3, characterized in that, The method further includes: Receive fourth information, which is used to determine the first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; Receive fifth information, which is used to indicate the first TPC parameter in the first TPC parameter set, and the first TPC parameter is used for uplink transmission.

5. The method according to claim 4, characterized in that, The index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

6. The method according to claim 5, characterized in that, The indexes in the index set are indicated by the first field in the downlink control information (DCI), and the fifth information is carried in the first field.

7. The method according to any one of claims 4 to 6, characterized in that, In the N TPC parameter sets, each TPC parameter set contains TPC parameters including the cumulative value of power control and / or the absolute value of power control.

8. The method according to any one of claims 4 to 7, characterized in that, The method further includes: Receive a sixth message, the sixth message indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third message indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Receive seventh information, the seventh information being used to indicate power control parameters; the power control parameters being used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmission in at least two uplink channels.

10. The method according to claim 9, characterized in that, The method further includes: Receive an eighth message, the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

11. The method according to claim 9 or 10, characterized in that, The method further includes: Receive a ninth message, the ninth message indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth message indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

12. A communication method, characterized in that, include: A first downlink reference signal is transmitted, the received power of which is used to determine a first path loss; Send a first message, which is used to indicate road loss offset information; The path loss offset information and the first path loss are used to determine the second path loss, which is used for uplink transmission.

13. The method according to claim 12, characterized in that, The method further includes: Send a second message indicating that the path loss offset information is associated with the first downlink reference signal, or, the second message indicating that the path loss offset information is associated with multiple downlink reference signals, the multiple downlink reference signals including the first downlink reference signal.

14. The method according to claim 12 or 13, characterized in that, The method further includes: Send a third message, the third message indicating that the path loss offset information is used for uplink transmission of the first terminal device, or the third message indicating that the path loss offset information is used for uplink transmission of one or more terminal devices in the first cell.

15. The method according to any one of claims 12 to 14, characterized in that, The method further includes: Send a fourth message, which is used to determine the first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; in the N TPC parameter sets, the power control ranges corresponding to different TPC parameter sets are different; Send a fifth message, which is used to indicate a first TPC parameter in the first TPC parameter set, and the first TPC parameter is used for uplink transmission.

16. The method according to claim 15, characterized in that, The index sets corresponding to different TPC parameter sets in the N TPC parameter sets are the same.

17. The method according to claim 16, characterized in that, The indexes in the index set are indicated by the first field in the DCI, and the fifth information is carried in the first field.

18. The method according to any one of claims 15 to 17, characterized in that, In the N TPC parameter sets, each TPC parameter set contains TPC parameters including the cumulative value of power control and / or the absolute value of power control.

19. The method according to any one of claims 15 to 18, characterized in that, The method further includes: Send a sixth message, the sixth message indicating that the first TPC parameter set is used for uplink transmission of the first terminal device, or the third message indicating that the first TPC parameter set is used for uplink transmission of one or more terminal devices in the first cell.

20. The method according to any one of claims 12 to 19, characterized in that, The method further includes: Send a seventh message, the seventh message being used to indicate power control parameters; the power control parameters being used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters being used for power control of uplink transmission in at least two uplink channels.

21. The method according to claim 20, characterized in that, The method further includes: Send an eighth message, the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the eighth message indicating that the power control parameters are used for power control of uplink transmission in at least two uplink channels.

22. The method according to claim 20 or 21, characterized in that, The method further includes: Send a ninth message, the ninth message indicating that the power control parameters are used for uplink transmission of the first terminal device, or the ninth message indicating that the power control parameters are used for uplink transmission of one or more terminal devices in the first cell.

23. A communication method, characterized in that, include: Receive fourth information, which is used to determine the first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; The power control ranges corresponding to different TPC parameter sets are different across the N TPC parameter sets. Receive fifth information, which is used to indicate the first TPC parameter in the first TPC parameter set, and the first TPC parameter is used for uplink transmission.

24. A communication method, characterized in that, include: Send a fourth message, which is used to determine the first TPC parameter set in N transmission power control (TPC) parameter sets, where N is an integer greater than 1; The power control ranges corresponding to different N TPC parameter sets are different; Send a fifth message, which is used to indicate a first TPC parameter in the first TPC parameter set, and the first TPC parameter is used for uplink transmission.

25. A communication method, characterized in that, include: Receive the seventh information, which is used to indicate power control parameters; The power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels. The power control parameters are determined based on the seventh piece of information.

26. A communication method, characterized in that, include: Determine the seventh information, which is used to indicate power control parameters; wherein the power control parameters are used for power control of uplink transmission in at least two power control states on the uplink channel, or the power control parameters are used for power control of uplink transmission in at least two uplink channels. Send the seventh message.

27. A communication device, characterized in that, Includes a module for performing the method as described in any one of claims 1 to 26.

28. A communication device, characterized in that, It includes at least one processor coupled to a memory; the at least one processor is used to perform the method as described in any one of claims 1 to 26.

29. The communication device according to claim 28, characterized in that, The communication device is a chip or chip system.

30. A readable storage medium, characterized in that, The storage medium stores a computer program or instructions, which, when executed by a communication device, implement the method as described in any one of claims 1 to 26.

31. A computer program product, characterized in that, When the computer program product is run on a computer, it causes the computer to perform the method as described in any one of claims 1 to 26.

Images