Communication method and apparatus

Abstract

The present application provides a communication method and apparatus. The method comprises: sending first information, the first information comprising at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to the at least one first radio frequency indicator; receiving second information, the second information comprising at least one of the following: at least one second radio frequency indicator, or at least one second power backoff value, wherein the second information is determined on the basis of the first information, the at least one second radio frequency indicator has a correspondence with the at least one first radio frequency indicator, and the value of one second radio frequency indicator among the at least one second radio frequency indicator is a changed value of one first radio frequency indicator among the at least one first radio frequency indicator corresponding to the one second radio frequency indicator; and, on the basis of the second information, determining a transmit power or a power backoff value. The present application can effectively improve the uplink coverage capability of a terminal device.

Description

Communication methods and devices

[0001] This application claims priority to Chinese Patent Application No. 202411441459.5, filed on October 15, 2024, entitled "Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology

[0003] Currently, several waveforms commonly used in communication systems include Orthogonal Frequency Division Multiplexing (OFDM) and Discrete Fourier Transform-Spreading Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). DFT-s-OFDM uses a single-carrier waveform, while OFDM uses a multi-carrier waveform. Compared to multi-carrier waveforms, single-carrier waveforms have a lower peak-to-average power ratio (PAPR). With the same power amplifier, single-carrier waveforms can provide greater output power and higher power amplifier efficiency, thereby improving coverage and reducing energy consumption.

[0004] To improve the uplink coverage capability of terminal devices, existing technologies have proposed DFT-s-OFDM waveform generation methods based on frequency domain spectral shaping (FDSS). Some have also proposed power boosting of the transmitter to make the power amplifier (PA) operate in the nonlinear region, and the receiver to estimate and compensate for the nonlinearity introduced by the transmitter, thereby meeting the demodulation requirements. However, the above methods cannot effectively improve the uplink coverage capability of terminal devices. Summary of the Invention

[0005] This application proposes a communication method and apparatus that can effectively improve the uplink coverage capability of terminal devices.

[0006] In a first aspect, embodiments of this application provide a communication method applicable to a terminal-side device. This terminal-side device can be a terminal device, a component applied within the terminal device (e.g., a processor, chip, circuit, or chip system), or a logic module or software capable of implementing all or part of the terminal device's functions. The method includes: sending first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, wherein any one of the at least one first radio frequency indicator includes the value of at least one first radio frequency indicator. Each value of a first radio frequency indicator in the target value corresponds to a first power backoff value, and the first power backoff value is one of at least one first power backoff value; receive second information, the second information including at least one of the following: at least one second radio frequency indicator, or at least one second power backoff value; the second information is determined based on the first information, the at least one second radio frequency indicator and the at least one first radio frequency indicator have a corresponding relationship, and the value of one of the at least one second radio frequency indicator corresponds to the value of the first radio frequency indicator of the at least one first radio frequency indicator after a change; determine the transmit power or power backoff value based on the second information.

[0007] In the above method, the transmit power corresponding to the first information is less than the transmit power determined by the second information. This method increases the transmit power of the terminal device, effectively improving its uplink coverage capability. Taking the first and second radio frequency indicators as the error vector amplitude (EVM) as an example, the first radio frequency indicator in the first information includes a value of 30% under π / 2BPSK modulation. The second radio frequency indicator in the second information includes a value of 40% under π / 2BPSK modulation. A transmit power of 30% corresponds to transmit power 1, and transmit power 2 is determined based on a transmit power of 40%. Transmit power 1 is less than transmit power 2. Therefore, this method increases the transmit power of the terminal device, effectively improving its uplink coverage capability and simultaneously increasing the power amplifier (PA) efficiency, achieving energy saving. Furthermore, it enables compatible scenarios, such as compatibility with older waveforms, like Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). Because older waveforms are less compatible than newer waveforms, such as filtered single-carrier orthogonal amplitude modulation (ACEM) waveforms... SC-QAM has a small coverage area, but the above method can improve the coverage of older waveforms.

[0008] In one possible implementation, the value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

[0009] In another possible implementation, the first RF metric includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

[0010] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; the value of one of the at least two second radio frequency indicators is a value corresponding to a change in one of the at least two first radio frequency indicators, including: the value of one of the at least two second radio frequency indicators is an increased value corresponding to an increase in one of the at least two first radio frequency indicators.

[0011] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include MPR, and the value of one of the at least two second radio frequency indicators is a value of a first radio frequency indicator that corresponds to a second radio frequency indicator after a change, including: the value of one of the at least two second radio frequency indicators is a value of a first radio frequency indicator that corresponds to a second radio frequency indicator after a decrease.

[0012] In another possible implementation, the first information further includes: capability information of the terminal device, which includes at least one of the following: the terminal device supports power boost or the terminal device supports power back-off.

[0013] In the above method, by reporting the capability information of the terminal devices, the network devices can be configured based on this information. For example, if the capability information includes that the terminal device supports power boost or power backoff reduction, the network device sends a second piece of information to the terminal device; if the capability information does not include that the terminal device supports power boost or power backoff reduction, the network device may not send the second piece of information to the terminal device. In summary, reporting the capability information of the terminal devices can support network device decision-making and optimize resource allocation.

[0014] In another possible implementation, the method further includes: grouping the at least one first radio frequency indicator according to a first rule to determine at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups, the first rule including one or more of the following: radio frequency indicator type, modulation scheme, waveform type, resource block (RB) type, or index number or position of component carrier; transmitting first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to at least one first radio frequency indicator, includes: transmitting the first information, the first information including at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups.

[0015] In the above methods, group reporting can improve query efficiency and facilitate information management.

[0016] In another possible implementation, the first rule includes radio frequency (RF) indicator types, and the grouping of the at least one RF indicator according to the first rule to determine at least one of the following: at least one first RF indicator of different groups, or a first power back-off value corresponding to at least one first RF indicator of different groups, includes: grouping the at least one first RF indicator according to the RF indicator type to determine at least one of the following: at least one first RF indicator of each RF indicator type group, or a first power back-off value corresponding to at least one first RF indicator of each RF indicator type group; the sending of first information, the first information including at least one of the following: at least one first RF indicator of different groups, or a first power back-off value corresponding to at least one first RF indicator of different groups, includes: sending the first information, the first information including at least one of the following: at least one first RF indicator of each RF indicator type group, or a first power back-off value corresponding to at least one first RF indicator of each RF indicator type group.

[0017] In another possible implementation, the method further includes: determining at least one of the following according to a first condition: at least one first radio frequency indicator, or a first power back-off value corresponding to the at least one first radio frequency indicator, the first condition being related to one or more of the following: modulation and coding scheme MCS size, waveform type, number of resource blocks RB, or index number or position of component carriers.

[0018] The above methods can reduce reporting costs and avoid reporting useless information, thus preventing resource waste.

[0019] In another possible implementation, the method further includes: determining a first range, the first information including at least one of the following: a first power back-off value within the first range, or a first radio frequency indicator corresponding to the first power back-off value within the first range.

[0020] In the above method, by sending the first power back-off value within the first range and / or the first radio frequency index corresponding to the first power back-off value within the first range, certain specific application scenarios can be met and reporting overhead can be reduced.

[0021] In another possible implementation, the method further includes: determining a second range; the first information includes at least one of the following: a value of a first radio frequency indicator within the second range, or a first power back-off value corresponding to the value of the first radio frequency indicator within the second range.

[0022] In the above method, by sending the value of the first radio frequency indicator within the second range, or the first power back-off value corresponding to the value of the first radio frequency indicator within the second range, certain specific application scenarios can be met and reporting overhead can be reduced.

[0023] In another possible implementation, the second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

[0024] In another possible implementation, the method further includes: receiving first indication information, the first indication information being used to indicate priority information of a first radio frequency indicator, the priority information of the first radio frequency indicator including the type of a first priority radio frequency indicator or priority information corresponding to different types of first radio frequency indicators.

[0025] In the above method, the terminal device can report the first information based on the priority information of the first radio frequency indicator, thereby reducing signaling overhead.

[0026] In another possible implementation, the priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator. The transmission of the first information, which includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, includes: transmitting the first information based on the type of the first priority radio frequency indicator, which includes at least one of the following: the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator, or the first power back-off value corresponding to the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator.

[0027] In the above method, by indicating the first priority radio frequency index type through the first indication information, the terminal device reports the first radio frequency index corresponding to the first priority radio frequency index type and / or the corresponding first power back-off value, which can reduce the processing overhead of the terminal device and reduce the signaling overhead.

[0028] In another possible implementation, the priority information of the first radio frequency indicator includes priorities corresponding to different types of first radio frequency indicators. The priorities corresponding to the different types of first radio frequency indicators include priority A and priority B. Priority A is the priority corresponding to the first type of first radio frequency indicator, and priority B is the priority corresponding to the second type of first radio frequency indicator. The priority of priority A is higher than the priority of priority B. The transmission of the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to the at least one first radio frequency indicator. This includes: transmitting the first information based on the priorities corresponding to the different types of first radio frequency indicators, the first information including at least one of the following: the first type of first radio frequency indicator, or the first power backoff value corresponding to the first type of first radio frequency indicator; or transmitting the first information based on second indication information and the priorities corresponding to the different types of first radio frequency indicators, the second indication information being used to indicate the reporting of the first type of first radio frequency indicator, the first information including at least one of the following: the first type of first radio frequency indicator, or the first power backoff value corresponding to the first type of first radio frequency indicator.

[0029] In the above method, by having the network device indicate the priority of different types of first radio frequency indicators, and the terminal device reporting the first radio frequency indicator with higher priority and / or the first power backoff value corresponding to the higher priority first radio frequency indicator based on the priority of the first radio frequency indicator with different types, the reporting overhead can be reduced. By having the terminal device select to report the first type of first radio frequency indicator and / or the first power backoff value corresponding to the first type of first radio frequency indicator based on the second indication information and the priority of the first radio frequency indicator with different types, the instructions of the network device can be satisfied, and the reporting overhead can be reduced.

[0030] In another possible implementation, the at least one second radio frequency indicator is a second radio frequency indicator of a first type, and the at least one second power back-off value is a second power back-off value corresponding to the second radio frequency indicator of the first type; determining the transmit power or power back-off value based on the second information includes: determining the transmit power or power back-off value based on at least one of the second radio frequency indicator of the first type or the second power back-off value corresponding to the second radio frequency indicator of the first type.

[0031] In the above-described manner, by using at least one second radio frequency indicator of the first type, indication overhead and signaling overhead can be reduced. Furthermore, by determining the transmit power or power back-off value based on the second radio frequency indicator of the first type and / or the second power back-off value corresponding to the second radio frequency indicator of the first type, the processing overhead of the terminal device can be reduced.

[0032] In another possible implementation, the at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator. The method further includes: receiving third indication information, the third indication information being used to indicate that the priority of the first type of second radio frequency indicator is priority C, and the priority of the second type of second radio frequency indicator is priority D, wherein the priority C has a higher priority than the priority D; determining the transmit power or power backoff value based on the second information includes: determining the transmit power or power backoff value based on at least one of at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator, or a second power backoff value corresponding to at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator.

[0033] In the above method, when the second information sent by the network device includes different types of second radio frequency indicators and / or second power back-off values ​​corresponding to different types of second radio frequency indicators, by defining the priority of different types of second radio frequency indicators, it is possible to avoid the situation where the terminal device cannot determine which type of second radio frequency indicator and / or which type of second radio frequency indicator corresponds to the second power back-off value to determine the transmission power, which is beneficial to improving the efficiency of the terminal device in determining the transmission power.

[0034] In another possible implementation, the method further includes transmitting a signal based on the transmit power or power backoff value.

[0035] In the above method, by sending signals based on the transmission power or power backoff value determined by the second information, the transmission power can be increased, effectively improving the uplink coverage capability of the terminal equipment.

[0036] Secondly, embodiments of this application provide a communication method applicable to a network-side device. This network-side device can be a network device, a component within the network device (e.g., a processor, chip, circuit, or chip system), or a logic module or software capable of implementing all or part of the network device's functions. The method includes: receiving first information, the first information including at least one of the following: at least one first radio frequency (RF) indicator, or at least one first power back-off value corresponding to the at least one RF indicator, wherein any one of the at least one RF indicator includes the value of at least one RF indicator. Each first radio frequency indicator in the target value corresponds to a first power backoff value, and the first power backoff value is one of at least one first power backoff value; the second information is transmitted, and the second information includes at least one of the following: at least one second radio frequency indicator, or at least one second power backoff value; the at least one second radio frequency indicator and the at least one first radio frequency indicator have a corresponding relationship, and the value of one of the at least one second radio frequency indicators corresponds to the value of the first radio frequency indicator of the at least one first radio frequency indicator after the change of the first radio frequency indicator of the at least one second radio frequency indicator, and the second information is determined based on the first information, and the second information is used to determine the transmit power or power backoff value.

[0037] In the above method, the transmit power corresponding to the first information is less than the transmit power determined by the second information. This method increases the transmit power of the terminal device, effectively improving its uplink coverage capability. Taking the first and second radio frequency indicators as the error vector amplitude (EVM) as an example, the first radio frequency indicator in the first information includes a value of 30% under π / 2BPSK modulation. The second radio frequency indicator in the second information includes a value of 40% under π / 2BPSK modulation. A transmit power of 30% corresponds to transmit power 1, and transmit power 2 is determined based on a transmit power of 40%. Transmit power 1 is less than transmit power 2. Therefore, this method increases the transmit power of the terminal device, effectively improving its uplink coverage capability and simultaneously increasing the power amplifier (PA) efficiency, achieving energy saving. Furthermore, it enables compatible scenarios, such as compatibility with older waveforms, like Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). Because older waveforms are less compatible than newer waveforms, such as filtered single-carrier orthogonal amplitude modulation (ACEM) waveforms... SC-QAM has a small coverage area, but the above method can improve the coverage of older waveforms.

[0038] In one possible implementation, the value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

[0039] In another possible implementation, the second information is determined based on the first information, including: the second information is determined based on the first information and at least one of the following, wherein the at least one of the following includes: terminal device capability information, network device capability information, coverage requirements, or application scenarios.

[0040] In the above method, after receiving the signal, the network device can compensate for the degradation of some parameters based on the network device's capability information, effectively improving the uplink coverage capability of the terminal device and enhancing the user experience.

[0041] In another possible implementation, the first RF metric includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

[0042] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; the value of one of the at least two second radio frequency indicators is a value corresponding to a change in one of the at least two first radio frequency indicators, including: the value of one of the at least two second radio frequency indicators is an increased value corresponding to an increase in one of the at least two first radio frequency indicators.

[0043] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include MPR, and the value of one of the at least two second radio frequency indicators is a value of a first radio frequency indicator that corresponds to a second radio frequency indicator after a change, including: the value of one of the at least two second radio frequency indicators is a value of a first radio frequency indicator that corresponds to a second radio frequency indicator after a decrease.

[0044] In another possible implementation, the first information further includes: capability information of the terminal device, which includes at least one of the following: the terminal device supports power boost or the terminal device supports power back-off.

[0045] In the above method, by reporting the capability information of the terminal devices, the network devices can be configured based on this information. For example, if the capability information includes that the terminal device supports power boost or power backoff reduction, the network device sends a second piece of information to the terminal device; if the capability information does not include that the terminal device supports power boost or power backoff reduction, the network device may not send the second piece of information to the terminal device. In summary, reporting the capability information of the terminal devices can support network device decision-making and optimize resource allocation.

[0046] In another possible implementation, receiving the first information, which includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, includes: receiving the first information, which includes at least one of the following: at least one first radio frequency indicator of the different group, or the first power back-off value corresponding to the at least one first radio frequency indicator of the different group, wherein the at least one of the following: the at least one first radio frequency indicator of the different group, or the first power back-off value corresponding to the at least one first radio frequency indicator of the different group, is determined by grouping the at least one first radio frequency indicator according to a first rule, the first rule including one or more of the following: radio frequency indicator type, modulation method, waveform type, resource block RB type, or index number or position of component carrier.

[0047] In the above methods, group reporting can improve query efficiency and facilitate information management.

[0048] In another possible implementation, the first rule includes a radio frequency (RF) indicator type. Receiving first information, the first information including at least one of the following: at least one first RF indicator, or at least one first power back-off value corresponding to the at least one first RF indicator, includes: receiving the first information, the first information including at least one of the following: at least one first RF indicator of each RF indicator type group, or a first power back-off value corresponding to the at least one first RF indicator of each RF indicator type group; wherein at least one of the following: the at least one first RF indicator of each RF indicator type group, or the first power back-off value corresponding to the at least one first RF indicator of each RF indicator type group, is determined by grouping the at least one first RF indicator according to the RF indicator type.

[0049] In another possible implementation, the second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

[0050] In another possible implementation, the method further includes: sending first indication information, the first indication information being used to indicate priority information of a first radio frequency indicator, the priority information of the first radio frequency indicator including the type of a first priority radio frequency indicator or priority information corresponding to different types of first radio frequency indicators.

[0051] In the above method, the terminal device can report the first information based on the priority information of the first radio frequency indicator, thereby reducing signaling overhead.

[0052] In another possible implementation, the at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator. The method further includes: sending third indication information, the third indication information being used to indicate that the priority of the first type of second radio frequency indicator is priority C, and the priority of the second type of second radio frequency indicator is priority D, wherein the priority C is higher than the priority D.

[0053] In the above method, when the second information sent by the network device includes different types of second radio frequency indicators and / or second power back-off values ​​corresponding to different types of second radio frequency indicators, by defining the priority of different types of second radio frequency indicators, it is possible to avoid the situation where the terminal device cannot determine which type of second radio frequency indicator and / or which type of second radio frequency indicator corresponds to the second power back-off value to determine the transmission power, which is beneficial to improving the efficiency of the terminal device in determining the transmission power.

[0054] Thirdly, embodiments of this application provide a communication device, which can be a terminal device, a component in the terminal device (e.g., a processor, chip, circuit, or chip system), or a logic module or software that can implement all or part of the functions of the terminal device.

[0055] In one possible implementation, the communication device may include modules, units, or means that correspond one-to-one with the methods / operations / steps / actions described in the first aspect. These modules, units, or means may be hardware circuits, software, or a combination of hardware circuits and software.

[0056] In one possible implementation, the communication device includes: a processing unit and a transceiver unit. The transceiver unit is configured to transmit first information, the first information including at least one of the following: at least one first radio frequency (RF) indicator, or at least one first power backoff value corresponding to the at least one RF indicator, wherein any one of the at least one RF indicator includes the value of at least one RF indicator, each value of the at least one RF indicator corresponds to a first power backoff value, and the first power backoff value is one of the at least one first power backoff values; the transceiver unit is further configured to receive second information, the second information including at least one of the following: at least one second RF indicator, or at least one second power backoff value; the second information is determined based on the first information, the at least one second RF indicator and the at least one RF indicator have a corresponding relationship, and the value of one of the at least one second RF indicator is the value of the at least one first RF indicator corresponding to the change of the first RF indicator of the at least one first RF indicator; the processing unit is configured to determine the transmit power or the power backoff value based on the second information.

[0057] In one possible implementation, the value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

[0058] In another possible implementation, the first RF metric includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

[0059] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; the value of one of the at least two second radio frequency indicators is a value corresponding to a change in one of the at least two first radio frequency indicators, including: the value of one of the at least two second radio frequency indicators is an increased value corresponding to an increase in one of the at least two first radio frequency indicators.

[0060] In another possible implementation, the first information further includes: capability information of the terminal device, which includes at least one of the following: the terminal device supports power boost or the terminal device supports power back-off.

[0061] In another possible implementation, the processing unit is further configured to group the at least one first radio frequency indicator according to a first rule to determine at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups, wherein the first rule includes one or more of the following: radio frequency indicator type, modulation scheme, waveform type, resource block (RB) type, or index number or position of component carrier; the transmitting unit is configured to transmit the first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups.

[0062] In another possible implementation, the first rule includes a radio frequency (RF) indicator type. The processing unit is configured to group the at least one first RF indicator according to the RF indicator type and determine at least one of the following: at least one first RF indicator for each RF indicator type group, or a first power back-off value corresponding to at least one first RF indicator for each RF indicator type group. The transceiver unit is configured to transmit the first information, which includes at least one of the following: at least one first RF indicator for each RF indicator type group, or a first power back-off value corresponding to at least one first RF indicator for each RF indicator type group.

[0063] In another possible implementation, the processing unit is further configured to determine at least one of the following according to a first condition: the at least one first radio frequency indicator, or a first power back-off value corresponding to the at least one first radio frequency indicator, the first condition being related to one or more of the following: modulation and coding scheme MCS size, waveform type, number of resource blocks RB, or index number or position of component carriers.

[0064] In another possible implementation, the processing unit is further configured to determine a first range, the first information including at least one of the following: a first power back-off value within the first range, or a first radio frequency indicator corresponding to the first power back-off value within the first range.

[0065] In another possible implementation, the processing unit is further configured to determine a second range; the first information includes at least one of the following: a value of a first radio frequency indicator within the second range, or a first power back-off value corresponding to the value of the first radio frequency indicator within the second range.

[0066] In another possible implementation, the second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

[0067] In another possible implementation, the transceiver unit is further configured to receive first indication information, which indicates priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of a first priority radio frequency indicator or priority information corresponding to different types of first radio frequency indicators.

[0068] In another possible implementation, the priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator. The transceiver unit is configured to send the first information based on the type of the first priority radio frequency indicator. The first information includes at least one of the following: the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator, or the first power back-off value corresponding to the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator.

[0069] In another possible implementation, the priority information of the first radio frequency indicator includes priorities corresponding to different types of first radio frequency indicators. The priorities corresponding to the different types of first radio frequency indicators include priority A and priority B. Priority A is the priority corresponding to the first type of first radio frequency indicator, and priority B is the priority corresponding to the second type of first radio frequency indicator. The priority of priority A is higher than the priority of priority B. The transceiver unit is used to send the first information based on the priorities corresponding to the different types of first radio frequency indicators. The first information includes at least one of the following: the first radio frequency indicator of the first type, or the first power back-off value corresponding to the first type of first radio frequency indicator; or to send the first information based on second indication information and the priorities corresponding to the different types of first radio frequency indicators. The second indication information is used to indicate the reporting of the first type of first radio frequency indicator. The first information includes at least one of the following: the first radio frequency indicator of the first type, or the first power back-off value corresponding to the first type of first radio frequency indicator.

[0070] In another possible implementation, the at least one second radio frequency indicator is a second radio frequency indicator of a first type, and the at least one second power back-off value is a second power back-off value corresponding to the second radio frequency indicator of the first type; the processing unit is used to determine the transmit power or power back-off value based on at least one of the second radio frequency indicator of the first type or the second power back-off value corresponding to the second radio frequency indicator of the first type.

[0071] In another possible implementation, the at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator. The method further includes: receiving third indication information, the third indication information being used to indicate that the priority of the first type of second radio frequency indicator is priority C, and the priority of the second type of second radio frequency indicator is priority D, wherein the priority C is higher than the priority D; the processing unit is used to determine the transmit power or power back-off value based on at least one of the at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator or the second power back-off value corresponding to the at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator.

[0072] In another possible implementation, the transceiver unit is also used to transmit signals based on the transmit power or power backoff value.

[0073] For the technical effects of the third aspect or possible implementation, please refer to the introduction of the technical effects of the first aspect or corresponding implementation.

[0074] Fourthly, embodiments of this application provide a communication device, which may be a network device, a component of a network device (e.g., a processor, chip, circuit, or chip system), or a logic module or software capable of implementing all or part of the functions of a network device.

[0075] In one possible implementation, the communication device may include modules, units, or means that correspond one-to-one with the methods / operations / steps / actions described in the second aspect. These modules, units, or means may be hardware circuits, software, or a combination of hardware circuits and software.

[0076] In one possible implementation, the communication device includes: a processing unit and a transceiver unit. The transceiver unit is configured to receive first information, the first information including at least one of the following: at least one first radio frequency (RF) indicator, or at least one first power backoff value corresponding to the at least one RF indicator, wherein any one of the at least one RF indicator includes the value of at least one RF indicator, each value of the at least one RF indicator corresponds to a first power backoff value, and the first power backoff value is one of the at least one first power backoff values; the processing unit is configured to determine second information based on the first information, the second information including at least one of the following: at least one second RF indicator, or at least one second power backoff value; the at least one second RF indicator and the at least one first RF indicator have a corresponding relationship, the value of one of the at least one second RF indicator corresponds to the value of the at least one first RF indicator after a change, and the second information is used to determine the transmit power or the power backoff value; the transceiver unit is configured to transmit the second information.

[0077] In one possible implementation, the value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

[0078] In another possible implementation, the second information is determined based on the first information and at least one of the following, which includes: terminal device capability information, network device capability information, coverage requirements, or application scenarios.

[0079] In another possible implementation, the first RF metric includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

[0080] In another possible implementation, the first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; the value of one of the at least one second radio frequency indicator is an enlarged value of one of the at least one first radio frequency indicators corresponding to the second radio frequency indicator.

[0081] In another possible implementation, the first information further includes: capability information of the terminal device, which includes at least one of the following: the terminal device supports power boost or the terminal device supports power back-off.

[0082] In another possible implementation, the transceiver unit is configured to receive the first information, which includes at least one of the following: at least one first radio frequency indicator of the different group, or a first power back-off value corresponding to at least one first radio frequency indicator of the different group, wherein at least one of the following is determined by grouping the at least one first radio frequency indicator according to a first rule, and the first rule includes one or more of the following: radio frequency indicator type, modulation method, waveform type, resource block (RB) type, or index number or position of component carrier.

[0083] In another possible implementation, the first rule includes radio frequency (RF) index types, and the transceiver unit is configured to receive the first information, the first information including at least one of the following: at least one first RF index of each RF index type group, or a first power back-off value corresponding to at least one first RF index of each RF index type group; wherein at least one of the following: at least one first RF index of each RF index type group, or the first power back-off value corresponding to at least one first RF index of each RF index type group, is determined by grouping the at least one first RF index according to the RF index type.

[0084] In another possible implementation, the second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

[0085] In another possible implementation, the transceiver unit is further configured to transmit first indication information, which indicates priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of a first priority radio frequency indicator or priority information corresponding to different types of first radio frequency indicators.

[0086] In another possible implementation, the at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator. The transceiver unit is also configured to transmit third indication information, which indicates that the priority of the first type of second radio frequency indicator is priority C and the priority of the second type of second radio frequency indicator is priority D, wherein the priority C is higher than the priority D.

[0087] For the technical effects of the fourth aspect or possible implementation, please refer to the introduction of the technical effects of the second aspect or corresponding implementation.

[0088] Fifthly, embodiments of this application provide a communication device including at least one processor, which is used to invoke a computer program or instructions to perform the method described in the first aspect or a possible implementation thereof.

[0089] In one possible implementation, the communication device also includes a memory and a communication interface. Optionally, the memory and processor are integrated together.

[0090] In one possible implementation, the memory is located outside the communication device.

[0091] In a sixth aspect, embodiments of this application provide a communication device including at least one processor, which is configured to invoke a computer program or instructions to execute the method described in the second aspect or a possible implementation thereof.

[0092] In one possible implementation, the communication device also includes a memory and a communication interface. Optionally, the memory and processor are integrated together.

[0093] In one possible implementation, the memory is located outside the communication device.

[0094] In a seventh aspect, embodiments of this application provide a chip device including at least one processor, which is configured to invoke computer programs or instructions to implement any of the above aspects or possible implementations of any of the above aspects.

[0095] In one possible implementation, the input of the chip device corresponds to the receiving operation in any of the above-mentioned aspects or possible implementations, and the output of the chip device corresponds to the transmitting operation in any of the above-mentioned aspects or possible implementations.

[0096] Optionally, the processor is coupled to the memory via an interface.

[0097] Optionally, the chip device may also include a memory in which computer programs or instructions are stored.

[0098] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program or instructions that, when executed on a processor, implement the methods described above.

[0099] Ninthly, embodiments of this application provide a computer program product that includes a computer program or instructions that, when executed on a processor, implement the method described in any of the above aspects.

[0100] In a tenth aspect, embodiments of this application provide a communication system comprising: the apparatus as described in the fifth aspect and the apparatus as described in the sixth aspect. Attached Figure Description

[0101] Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0102] Figure 2 is a diagram showing the network element function division and protocol layer structure of an ORAN device provided in an embodiment of this application;

[0103] Figure 3 is a schematic diagram of the ACLR calculation range;

[0104] Figure 4 is a schematic diagram of the EVM calculation range;

[0105] Figure 5 is a schematic diagram of a SEM measurement;

[0106] Figure 6 is a schematic diagram of waveform generation for DFT-s-OFDM based on FDSS;

[0107] Figure 7 is a schematic diagram of the frequency domain shape of an FDSS shaped filter;

[0108] Figure 8 is a schematic diagram of PAPR with different waveforms;

[0109] Figure 9 is a schematic diagram of the coverage area of ​​modulation signals of various orders;

[0110] Figure 10 is a schematic diagram of nonlinear equilibrium compensation;

[0111] Figure 11 is a schematic diagram of NLC high and low frequency applications;

[0112] Figure 12 is a schematic diagram of a communication method provided in an embodiment of this application;

[0113] Figure 13 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0114] Figure 14 is a schematic diagram of another communication device provided in an embodiment of this application;

[0115] Figure 15 is a schematic diagram of the structure of another communication device provided in an embodiment of this application. Detailed Implementation

[0116] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0117] References to "one embodiment" or "some embodiments" as described in this application mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0118] In the description of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, and c can be single or multiple.

[0119] It is understood that in this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, and implicit instruction. When describing a certain instruction information for the purpose of instructing A, it can be understood that the instruction information carries A, directly instructs A, or indirectly instructs A.

[0120] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementations, there are many ways to instruct the information to be instructed, such as, but not limited to, directly instructing the information to be instructed, such as the information to be instructed itself or its index; indirectly instructing the information to be instructed by instructing other information, where there is a relationship between the other information and the information to be instructed; or instructing only a part of the information to be instructed, 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.

[0121] 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.

[0122] It is understood that "send" and "receive" in this application refer to the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which can include direct transmission via the air interface or indirect transmission via the air interface from other units or modules. "Receive information from YY" can be understood as the source of the information being YY, which can include direct reception from YY via the air interface or indirect reception from YY via the air interface from 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.

[0123] In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via buses, wiring, or interfaces.

[0124] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0125] The communication method provided in this application can be applied to cellular communication systems related to the 3rd Generation Partnership Project (3GPP), such as 4th generation (4G) communication systems, such as Long Term Evolution (LTE) communication systems, and also to 5th generation (5G) communication systems, such as 5G New Radio (NR) communication systems, or to various future communication systems and future communication networks. The method provided in this application can also be applied to Bluetooth systems, Wireless Fidelity (WiFi) systems, LoRa systems, or vehicle-to-everything (V2X) systems, communication systems supporting the integration of multiple wireless technologies, and device-to-device (D2D) systems. The method provided in this application can also be applied to satellite communication systems, wherein the satellite communication system can be integrated with the above-mentioned communication systems. The wireless communication systems involved in this application also include, but are not limited to: narrowband Internet of Things (NB-IoT) systems, global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA) systems, code division multiple access 2000 (CDMA2000) systems, or time division-synchronization code division multiple access (TD-SCDMA) systems.

[0126] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system 100 provided in an embodiment of this application. The application scenario of this application will be described using the communication system 100 architecture shown in Figure 1 as an example. The communication system 100 includes a network device 101 and a terminal device 102. It should be understood that the communication system 100 to which the methods of the embodiments of this application can be applied may include more or fewer network devices or terminal devices. The network devices and terminal devices can be hardware, functionally divided software, or a combination of both. The network devices and terminal devices can communicate with each other through other devices or network elements. In this system, the network device 101 can transmit data with multiple terminal devices; that is, the network device 101 sends downlink data to the terminal device 102, and the terminal device 102 can also send uplink data to the network device 101. The apparatus provided in the embodiments of this application can be applied to the network device 101 or to the terminal device 102. The network device 101 can be any of the network devices described below, and the terminal device 102 can be any of the terminal devices described below. It is understood that Figure 1 only illustrates one possible communication system architecture that can be applied to the embodiments of this application. In other possible scenarios, the communication system architecture may also include other devices. It should be noted that the methods described in the embodiments of this application can be applied to the communication system shown in Figure 1.

[0127] (1) Terminal equipment, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice or data connectivity to a user. Specifically, it includes devices that provide voice connectivity to a user, devices that provide data connectivity to a user, or devices that provide both voice and data connectivity to a user. For example, it may include handheld devices with wireless connectivity or processing devices connected to a wireless modem. This terminal equipment can communicate with the core network via a radio access network (RAN), exchanging voice or data with the RAN, or interacting with the RAN to exchange voice and data. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices (such as smartwatches, smart bracelets, pedometers, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, workshop equipment, wireless terminals in autonomous driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, and flying equipment (such as intelligent robots, hot air balloons, drones, airplanes), etc. Terminal devices can also be other devices with terminal functions; for example, a terminal device can also be a device that performs terminal functions in D2D communication.Terminal devices can also include vehicle-to-everything (V2X) terminal devices, machine-to-machine / machine-type communications (M2M / MTC) terminal devices, internet of things (IoT) terminal devices, light UEs, reduced capability UEs (REDCAP UEs), subscriber units, subscriber stations, mobile stations, remote stations, access points (APs), remote terminals, access terminals, user terminals, user agents, or user devices, and drone equipment. For example, this can include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, and computer-embedded mobile devices, etc. Examples include personal communication service (PCS) telephones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, and personal digital assistants (PDAs). It also includes limited devices, such as devices with low power consumption, limited storage capacity, or limited computing power. Examples include information sensing devices such as barcode scanners, radio frequency identification (RFID), sensors, global positioning systems (GPS), and laser scanners. In this application, terminal devices with wireless transceiver capabilities and chips that can be installed in the aforementioned terminal devices are collectively referred to as terminal devices.

[0128] It should be noted that the terminal device can be a device or apparatus with a chip, or a device or apparatus with integrated circuitry.

[0129] (2) A network device is a device deployed in a wireless access network to provide wireless communication functions for terminal devices. A network device may also be called a wireless access network (RAN) entity, access node, network node, or communication device, etc.

[0130] Specifically, the network equipment can be access network equipment for cellular systems related to the 3GPP (3rd Generation Partnership Project). For example, fourth-generation (4G) mobile communication systems or 5G mobile communication systems. The network equipment can also be access network equipment in open RAN (O-RAN or ORAN) or cloud radio access network (CRAN). Alternatively, the network equipment can also be access network equipment in a communication system formed by the integration of two or more of the above communication systems.

[0131] Network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved NodeB, or home Node B, HNB), baseband unit (BBU), access point (AP) in Wi-Fi systems, macro base station, micro base station (also known as small cell), relay station, access point, wireless relay node, donor node, radio controller in CRAN scenarios, wireless backhaul node, transmission point (TP), or transmission reception point (TRP). Network equipment can also be access network equipment in 5G mobile communication systems. For example, next-generation Node B (gNB), TRP, TP in New Radio (NR) systems, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G mobile communication system. Alternatively, network devices can also be network nodes constituting a gNB or transmission point. Examples include a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). CUs and DUs can be separate entities or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). Alternatively, network devices can also be servers, wearable devices, vehicles, or in-vehicle equipment. For example, in V2X technology, a network device can be a roadside unit (RSU).

[0132] Please refer to Figure 2, which is a diagram of the network element function division and protocol layer structure of an ORAN device provided in an embodiment of this application.

[0133] In some examples, the CU is a logical node carrying the Radio Resource Control (RRC) layer, Service Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, and other control functions of the access network equipment. The CU connects to network nodes such as the core network through interfaces, which can be interfaces like the E2 interface. Optionally, the CU may have some core network functions. The CU (e.g., the PDCP layer and higher layers) connects to the DU (e.g., the Radio Link Control (RLC) layer and lower layers) through interfaces, which can be interfaces like the F1 interface. In some examples, these interfaces (e.g., the F1 interface) can provide control plane and user plane functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol for the F1 interface, defining the F1 signaling procedures in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0134] In some examples, the CU can be split into CU-CP (control unit-control plane) and CU-UP (control unit-user plane). CU-CP is a logical node carrying the RRC layer and PDCP-C (control plane part of PDCP) layer, used to implement the CU's control plane functions. CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) network elements, such as the access and mobility management function (AMF) in a 5G system. The AMF network element is responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. CU-UP is a logical node carrying the SDAP layer and PDCP-U (user plane part of PDCP) layer, used to implement the CU's user plane functions. CU-UP can interact with network elements in the core network used to implement user plane functions. These network elements in the core network, such as the user plane function (UPF) network element in a 5G system, are responsible for data forwarding and receiving in terminal devices. The above CU and DU configurations are merely examples; the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or only some protocol layer processing functions. For example, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements, such as latency. Functions requiring low latency can be placed in the DU, while functions not requiring this latency can be placed in the CU. It is understood that network devices can be CU nodes, DU nodes, or devices including both CU and DU nodes. Moreover, the CU can be classified as a network device in the access network (RAN) or a network device in the core network (CN); there are no restrictions here.

[0135] In some examples, a DU is a logical node that carries the RLC layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0136] In some examples, the RU is a logical node carrying both lower physical layer (PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP), a remote radio head (RRH), or other similar entities. In some examples, the Low-PHY includes PHY processing functions such as Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0137] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a lower-layer split cus-plane (LLS-CUS) interface through a fronthaul link. LLS-CUS may include LLS-C and LLS-U interfaces that provide the control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via an LLS-M interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0138] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0139] It should be noted that CU (or CU-CP and CU-UP), DU, or RU may have different names in different systems, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open central unit (O-CU) or an open CU, DU can also be called an open distributed unit (O-DU), central unit control plane (CU-CP) can also be called an open central unit control plane (O-CU-CP) or an open CU-CP, central unit user plane (CU-UP) can also be called an open central unit user plane (O-CU-UP) or an open CU-UP, and RU can also be called an open radio unit (O-RU). This application does not impose any specific limitations. Any of the units CU, CU-CP, CU-UP, DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software and hardware modules.

[0140] Optionally, network equipment can also be core network equipment. Core network equipment is responsible for access control, registration management, service management, and mobility management of terminal devices accessing the network. For example, core network equipment may be access and mobility management function (AMF) network elements, user plane function (UPF) network elements, session management function (SMF) network elements, or policy control function (PCF) network elements.

[0141] It should be noted that the network device can be any of the devices or apparatuses shown above.

[0142] To better understand the solutions provided in the embodiments of this application, some terms, concepts or processes involved in the embodiments of this application will be introduced below.

[0143] I. Single-carrier waveforms and multi-carrier waveforms

[0144] Currently, the two commonly used waveforms are OFDM and DFT-s-OFDM. OFDM is a multi-carrier waveform, while DFT-s-OFDM is a single-carrier waveform.

[0145] OFDM (Optical Frequency Direction Modulation) is a waveform widely used in various communication systems (such as LTE and NR). OFDM can convert high-speed data streams into multiple parallel low-speed data streams through serial-to-parallel conversion, and then distribute them to sub-channels on several subcarriers of different frequencies for transmission, thereby greatly improving spectrum utilization. However, OFDM has a high peak-to-average power ratio (PAPR). The output of a multi-carrier system is the superposition of multiple sub-channel signals. Therefore, if the phases of the multiple signals are consistent, the instantaneous power of the superimposed signal will be much higher than the average power of the signal, resulting in a large PAPR. This places high demands on the linearity of the amplifier in the transmitter, which may lead to signal distortion, changes in the signal spectrum, and consequently, disruption of the orthogonality between the sub-channels, resulting in interference and degrading system performance.

[0146] DFT-s-OFDM utilizes the transmitter architecture of OFDM, performing precoding before subcarrier mapping. After precoding, DFT-s-OFDM achieves a lower PAPR than OFDM. Therefore, with the same power amplifier, a single-carrier waveform can provide greater output power and higher power amplifier efficiency, thereby improving coverage and reducing power consumption. The coverage and power consumption advantages of single-carrier waveforms are particularly evident on the terminal equipment side; therefore, single-carrier waveforms are generally used for uplink transmission.

[0147] II. Performance Indicators

[0148] In wireless communication, electromagnetic waves require a certain amount of power to transmit over sufficient distances, necessitating a power amplifier (PA). A PA amplifies low-power signals generated by network or terminal devices to a power level suitable for long-distance transmission, making it a core component of wireless communication equipment. However, power amplification introduces nonlinear distortion, degrading the performance of the transmitted signal. For example, PA-induced nonlinear distortion can decrease the error vector magnitude (EVM) and adjacent channel leakage power ratio (ACLR) of the transmitted signal.

[0149] (1) ACLR

[0150] The nonlinear characteristics of power amplifiers cause intermodulation signal distortion, resulting in the original signal's spectrum broadening to both sides. ACLR is used to measure the out-of-band radiation characteristics of a transmitter, defined as the ratio of the signal power falling into adjacent frequency bands to the signal power within the main band, as shown in Figure 3. Figure 3 is a schematic diagram of the ACLR calculation range. Since there is signal spread on both sides of the main channel, the average power of the left and right adjacent bands is usually taken, as shown in the following formula:

[0151] Among them, P adj1 It is the power of the left adjacent band, P adj2 It is the power of the right adjacent band, P main This refers to the primary channel power. The smaller the ACLR value, the less interference the primary channel causes to adjacent channels, and the better the communication performance.

[0152] In 5G communication systems, frequency range 1 (FR1) and frequency range 2 (FR2) represent different frequency ranges. FR1 mainly corresponds to the Sub-6GHz band, while FR2 corresponds to the millimeter-wave band. Currently, the 3GPP technical specification TS38.101 V18.7.0 has different requirements for uplink and downlink ACLR metrics for frequency bands FR1 and FR2, as shown in Table 1. For FR1, the uplink ACLR is -30 dBc relative to the carrier (dBc), where dBc is a unit representing the power relative to the carrier signal. The downlink ACLR is -38 dBc. For FR2, the uplink ACLR is -17 dBc, and the downlink ACLR is -28 dBc.

[0153] Table 1

[0154] (2) EVM

[0155] In practical communication systems, due to factors such as power amplifier nonlinearity or channel estimation errors, the signal constellation diagram after demodulation at the receiving end will deviate from the ideal (original) signal constellation diagram. The more severe the power amplifier nonlinearity, the greater the deviation. The error vector amplitude can effectively describe the in-band distortion of the signal. As shown in Figure 4, which illustrates the EVM calculation range, the connection between the constellation points of the original signal and the origin in the constellation diagram is the original vector. The connection between the constellation points of the demodulated signal and the origin is the actual vector. The EVM (error vector in the figure) is calculated from the deviation between the actual vector of the demodulated constellation points (the actual vector in the figure) and the vector of the original constellation points (the original vector in the figure), specifically defined as follows:

[0156] Among them, (I) r Q r ) is the constellation point after the received signal is demodulated, (I o Q o The constellation points of the original signal.

[0157] Currently, the 3GPP technical specification TS38.101 V18.7.0 imposes different EVM constraints on signals with different modulation orders. That is, the average EVM level varies for signals with different modulation orders. As shown in Table 2, when the signal is π / 2-binary phase shift keying (BPSK) modulation, the average EVM level is 30%; when the signal is quadrature phase shift keying (QPSK) modulation, the average EVM level is 17.5%; when the signal is 16-quadrature amplitude modulation (QAM) modulation, the average EVM level is 12.5%; when the signal is 64-QAM modulation, the average EVM level is 8%; and when the signal is 256-QAM modulation, the average EVM level is 3.5%.

[0158] Table 2

[0159] (3) Maximum output power (MOP)

[0160] Terminal transmit power levels are mainly divided into three categories: Power Class 1, Power Class 2, and Power Class 3. For Power Class 1, the Maximum Power Output (MOP) is 31 dBm; for Power Class 2, such as when the terminal is in a vehicle, the MOP is 26 dBm; and for Power Class 3, such as when the terminal is a handheld device, the MOP is 23 dBm. Terminal devices can perform power backoff to meet signal performance specifications. The maximum power reduction (MPR) is the power backoff value based on the MOP. When transmitting uplink signals, the average EVM level varies for different modulated signals, and the PAPR varies for different waveforms. The 3GPP technical specification TS38.101 V18.7.0 specifies the PAPR requirements for different waveforms and modulations for Power Class 3 signals, as shown in Table 3. For example, when the waveform is DFT-s-OFDM, the modulation method is π / 2-BPSK, and the transmission bandwidth is configured as edge RB allocation, the PAPR value is less than or equal to 3.5 dB.

[0161] Table 3

[0162] (4) Spectrum emission mask (SEM)

[0163] Please refer to Figure 5, which is a schematic diagram of a SEM measurement. The SEM measurement of the terminal device is calculated from the allocated NR channel bandwidth ± the frequency at the edge (Δf). OOB ). Δf OOB This refers to the out-of-band ΔMHz portion, and also introduces the concept of measurement bandwidth, which is the bandwidth within Δf. OOB The accuracy of internal measurements. 3GPP technical specification TS38.101 V18.7.0 specifies the accuracy requirements for different measurement bandwidths and different Δf values. OOB The requirements for SEM are shown in Table 4. For example, when the channel bandwidth is 100 MHz, Δf OOB The range is ±0-1MHz, the measurement bandwidth is 30kHz, and the SEM value is less than -24dB.

[0164] Table 4

[0165] To improve the uplink coverage capability of terminal devices, a DFT-s-OFDM waveform generation method based on frequency domain spectral shaping (FDSS) has been proposed in the prior art, as shown in Figure 6. The specific generation process includes one or more of the following steps: modulation, discrete Fourier transform (DFT), FDSS, inverse fast Fourier transform (IFFT), or adding a cyclic prefix (CP). FDSS refers to frequency domain shaping filtering of the signal after DFT on a single carrier, thereby mitigating the sidelobe superposition of inter-symbol impacts and reducing PAPR. Figure 7 shows a schematic diagram of the frequency domain shape of an FDSS shaping filter. Through the above process, the requirement for maximum coverage and a relatively low PAPR can be achieved. Figure 8 shows a schematic diagram of PAPR for different waveforms. As shown in Figure 8, under π / 2BPSK modulation, the signal generated based on FDSS has a PAPR of 10. -4At this time, the corresponding PAPR is 2dB. The receiver can treat the role of FDSS as part of the channel, so the FDSS receiver follows the existing DFT-s-OFDM reception process. Although using FDSS technology can reduce the PAPR of the uplink signal to some extent, if you want to extend the filtering shaping technology to low- and mid-order modulation (e.g., QPSK, 16QAM), you must perform spectrum broadening. Otherwise, it will be effective under π / 2BPSK modulation, but the transmission spectral efficiency of π / 2BPSK modulation is extremely low, which easily leads to a waste of bandwidth resources. In order to address the problem of low spectral efficiency of FDSS+π / 2BPSK modulation signals, FDSS technology based on large-bandwidth truncation filtering has been proposed. That is, the bandwidth corresponding to the number of modulation symbols is greater than the channel bandwidth configured by the base station. By designing a truncation shaping filter, the transmission bandwidth of the signal is controlled within the configured bandwidth. However, because the passband of the FDSS waveform is not flat, it may greatly affect the in-band emission (IBE) index. On the other hand, while truncation FDSS technology improves the signal spectral efficiency to some extent, it also raises the signal PAPR, and the actual coverage gain is insufficient due to limitations in ACLR / SEM metrics.

[0166] Currently, there is no digital pre-distortion (DPD) technology in the uplink scenario. The terminal needs to perform power back-off according to the MPR agreed in the protocol to meet the demodulation performance of the receiver. After power back-off, the coverage area of ​​each modulated signal will be limited. Please refer to Figure 9. Figure 9(a) is a schematic diagram of the coverage area of ​​each modulated signal when the terminal device does not perform power back-off, and Figure 9(b) is a schematic diagram of the coverage area of ​​each modulated signal after the terminal device performs power back-off. As can be seen from Figure 9, when the terminal device performs power back-off, the coverage area of ​​each modulated signal becomes smaller. In order to improve the uplink coverage capability of the terminal device, it has been proposed to boost the power of the transmitter (provided that the ACLR performance index is met) so that the power amplifier (PA) operates in the nonlinear region. The receiver estimates and compensates for the nonlinearity introduced at the transmitter, thereby meeting the demodulation requirements. Please refer to Figure 10, which is a schematic diagram of nonlinear equalization compensation. The transmitter over-powers the signal after passing through the power amplifier (PA) (to meet the ACLR performance requirements), causing the PA to operate in the nonlinear region. The receiver performs ADC, equalization (EQ), and nonlinearity compensation (NLC) on the transmitted signal. Specifically, the transceiver side predefines a reference signal for power amplifier nonlinear training, ensuring that the nonlinearity experienced by the reference signal is the same as that of the data signal. The receiver uses the reference signal to train coefficients and perform nonlinearity correction on the data signal. The prerequisite for nonlinearity compensation technology is that the transmitter power boost must meet the requirements of the spectral template. Because the receiver compensates for the nonlinearity caused by the PA power boost, uplink coverage is improved without affecting demodulation performance. However, NLC technology is suitable for scenarios where EVM is limited but ACLR is not. Please refer to Figure 11, which illustrates the high- and low-frequency use of NLC. On the left side of Figure 11, for high-frequency bands (such as FR2, millimeter wave, mmW), the protocol-constrained ACLR requirement is -17dBc. This ACLR requirement is relatively lenient; even with power boosting, the requirement will still be met, meaning the power boost of the terminal device satisfies the spectrum template. However, on the right side of Figure 11, for low-frequency bands (such as FR1, U6G (i.e., the 6425–7125 MHz band), the protocol-constrained ACLR requirement is -30dBc, which is relatively strict. When power boosting is performed, the power boost of the terminal device does not meet the spectrum template. RNC technology generally works under high-order modulation signals (where EVM requirements are strict). Furthermore, for terminal devices that undergo power boosting, the current protocol supports a maximum level of 26dBm. Even with zero power backoff, the coverage capability of the terminal device cannot be significantly improved.In summary, in order to improve the uplink coverage capability of terminal devices and maintain compatibility with older waveforms, such as DFT-s-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing, CP-OFDM), the embodiments of this application propose the following solutions.

[0167] Please refer to Figure 12. Figure 12 is a schematic diagram of a communication method provided in an embodiment of this application. The method shown in Figure 12 can be applied to terminal-side devices and network-side devices. The terminal-side device can be a terminal device, or a component applied in the terminal device (e.g., a processor, chip, circuit, or chip system), or a logic module or software that can implement all or part of the functions of the terminal device. The network-side device can be a network device, or a component applied in the network device (e.g., a processor, chip, circuit, or chip system), or a logic module or software that can implement all or part of the functions of the network device. In the embodiments shown in Figure 12 below, the terminal-side device is described as a terminal device and the network-side device is a network device. The method includes, but is not limited to, the following steps:

[0168] Step S1201: The terminal device sends the first information to the network device.

[0169] Correspondingly, the network device receives the first information from the terminal device.

[0170] The terminal device can be the terminal device in Figure 1, and the network device can be the network device in Figure 1.

[0171] The first information includes at least one of the following: at least one first radio frequency requirement (RF requirement), or at least one first power backoff value corresponding to at least one RF requirement. Each of the at least one RF requirement includes a value for at least one RF requirement, and each value of the at least one RF requirement corresponds to a first power backoff value, which is one of the aforementioned at least one first power backoff values. There is a one-to-one correspondence, or binding relationship, between each RF requirement value and a first power backoff value; that is, each RF requirement value is bound to a first power backoff value. The first power backoff value (output back-off, OBO) can be a power reduction amount relative to the maximum transmit power of the terminal device predefined by the protocol. Optionally, the first power backoff value can also be described as a first power backoff amount or a first power reduction amount. In one example, the first information includes a first RF requirement and a first power backoff value corresponding to that first RF requirement. For example, the first RF requirement is ACLR, the value of the first RF requirement is A1, and the first power backoff value corresponding to A1 is E0, for example, E0 = 3dB.

[0172] It should be noted that the power back-off value in this embodiment can also be replaced by transmit power. This can be understood as the power back-off value being a relative power quantity, while the transmit power is an absolute power quantity. When a power back-off value is involved, the maximum transmit power of the terminal device predefined by the protocol can be indicated or predefined. Furthermore, it needs to be specified whether the maximum transmit power of the terminal device predefined by the protocol is before or after the change, or before or after the update, or before or after the relaxation. In one possible implementation, the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first transmit power corresponding to at least one radio frequency indicator, wherein the first transmit power can be determined based on the maximum transmit power of the terminal device predefined by the protocol and the first power back-off value. In one example, the first information includes a first radio frequency (RF) indicator and a first transmit power corresponding to the first RF indicator. For example, the first RF indicator is ACLR, the value of the first RF indicator is A1, and the first power backoff value corresponding to A1 is E0, for example, E0 = 3dB. The maximum transmit power of the terminal device based on the protocol predefined is before the change, or before the update, or before the relaxation. For example, if the maximum transmit power of the terminal device predefined by the protocol is 26dB, then the first transmit power corresponding to the value of the first RF indicator A1 is 26-3 = 23dB.

[0173] The first radio frequency indicator includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), spurious emissions (SPUR), or spectrum emission template (SEM).

[0174] Optionally, the first information may further include the capability information of the terminal device. In one possible implementation, the capability information of the terminal device includes at least one of the following: the terminal device supports power boost, or the terminal device supports power backoff reduction. In another possible implementation, the capability information of the terminal device includes at least one of the following: whether the terminal device supports power boost, or whether the terminal device supports power backoff reduction. Optionally, power boost can also be described as power over-generation or power enhancement, which is not limited in this embodiment. Optionally, when the terminal device reports that it does not support power boost or power backoff reduction, the network device may not instruct the terminal device to perform power backoff reduction or send the second information to the terminal device. Optionally, the capability information of the terminal device can be selected for reporting based on the configuration information or related information of the network device. In one example, when a network device configures a terminal device to support power boost or power backoff reduction, it implicitly informs the terminal device whether the network device can perform receiver non-ideal countermeasures or has a need for extreme coverage. For example, when the network device is configured to transmit FDSS or filtered single carrier-QAM (filter SC-QAM) waveforms, it may include configuring the terminal device to support power boost or power backoff reduction, implicitly informing the terminal device that the network device can perform receiver non-ideal countermeasures or has a need for extreme coverage. Accordingly, the terminal device reports its capability information. Conversely, when the network device configures the terminal device to not support power boost or power backoff reduction, it implicitly informs the terminal device that the network device cannot perform receiver non-ideal countermeasures or does not have a need for extreme coverage. Accordingly, the terminal device does not report its capability information. Optionally, the network device can send indication information to the terminal device, which instructs the terminal device whether to report its capability information. Optionally, this indication information can be carried in a medium access control (MAC) control element (CE). For example, when a network device sends a MAC CE activation signal to a terminal device to activate the action reported by the terminal device, the terminal device correspondingly sends the first information to the network device.

[0175] In the above method, by reporting the capability information of the terminal devices, the network devices can be configured based on this information. For example, if the capability information includes that the terminal device supports power boost or power backoff reduction, the network device sends a second piece of information to the terminal device; if the capability information does not include that the terminal device supports power boost or power backoff reduction, the network device may not send the second piece of information to the terminal device. In summary, reporting the capability information of the terminal devices can support network device decision-making and optimize resource allocation.

[0176] In another possible implementation, the method further includes: the terminal device grouping at least one first radio frequency indicator according to a first rule to determine at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups. The terminal device sends first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to at least one first radio frequency indicator, including: the terminal device sending the first information, the first information including at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups.

[0177] The first rule includes one or more of the following: radio frequency indicator type, modulation scheme, waveform type, resource block (RB) type, or component carrier (CC) index number or position. Radio frequency indicator type may include at least one of the following: MPR, MOP, EVM, IBE, ACLR, SPUR, or SEM. Modulation scheme may include at least one of the following: π / 2-BPSK, QPSK, 16-QAM, 64-QAM, or 256-QAM. Resource block (RB) type may include at least one of the following: edge RB, outer RB, or inner RB. Component carrier index number or position may include at least one of the following: CC#0, CC#1, CC#2, or CC#3. In this context, CC#0 indicates that the component carrier index number is 0 or at position 0, CC#1 indicates that the component carrier index number is 1 or at position 1, CC#2 indicates that the component carrier index number is 2 or at position 2, and CC#3 indicates that the component carrier index number is 3 or at position 3.

[0178] In one example, the first rule includes radio frequency (RF) indicator types. Grouping at least one RF indicator according to the first rule to determine at least one of the following: at least one first RF indicator from different groups, or a first power backoff value corresponding to at least one first RF indicator from different groups, includes: the terminal device grouping at least one RF indicator according to the RF indicator type to determine at least one of the following: at least one first RF indicator from each RF indicator type group, or a first power backoff value corresponding to at least one first RF indicator from each RF indicator type group; sending first information, the first information including at least one of the following: at least one first RF indicator from different groups, or a first power backoff value corresponding to at least one first RF indicator from different groups, includes: the terminal device sending first information, the first information including at least one of the following: at least one first RF indicator from each RF indicator type group, or a first power backoff value corresponding to at least one first RF indicator from each RF indicator type group. The above process can be understood as the terminal device grouping at least one RF indicator according to the RF indicator type to determine the first RF indicator from different RF indicator type groups and / or the first power backoff value corresponding to the first RF indicator from different RF indicator type groups. That is, the terminal device reports according to the RF indicator type.

[0179] In one example, please refer to Table 5. As shown in Table 5, the terminal device reports the first information, which includes the values ​​of nine first radio frequency indicators (A1, A2, B1, B2, B3, C1, C2, C3, C4) and the first power back-off values ​​corresponding to the values ​​of the nine first radio frequency indicators (E0, E1, F0, F1, F2, G1, G2, G3, G4). There are three types of these nine radio frequency indicators, with radio frequency indicator type numbers of 0, 1, and 2. For example, radio frequency indicator type number 0 represents ACLR, radio frequency indicator type number 1 represents EVM, and radio frequency indicator type number 2 represents SEM. The value of the first radio frequency indicator and the first power back-off value under each group number are bound together and can be distinguished by the group number. For example, if the radio frequency indicator type number is 0, the group number is 0, the value of the first radio frequency indicator is A1, and the first power back-off value is E0. It should be noted that Table 5 uses the first power back-off value corresponding to the first radio frequency index as an example, but it can also use the first transmit power corresponding to the first radio frequency index as an example; this application embodiment does not limit this. Table 5 uses the values ​​of the first radio frequency index and / or the corresponding first power back-off values ​​corresponding to different radio frequency index types in one table, but they can also be in different tables. For example, the values ​​of the first radio frequency index and / or the corresponding first power back-off values ​​corresponding to the same radio frequency index type can be in one table; this application embodiment does not limit this.

[0180] Table 5

[0181] It should be noted that the methods for terminal devices to report data in groups according to modulation scheme and waveform type, resource block (RB) type, or CC index number or location can refer to the above description of terminal devices reporting data in groups according to RF indicator type, and will not be repeated here. Specifically, when terminal devices report data in groups according to modulation scheme and waveform type, the values ​​of the first RF indicator and / or the corresponding first power back-off values ​​for different waveforms may be in one table or not. Since different CC locations affect out-of-band power leakage indicators, when terminal devices report data in groups according to CC index number or location, the first RF indicator may include at least one of the following: SEM, ACLR, or spurious emissions.

[0182] In the above methods, group reporting can improve query efficiency and facilitate information management.

[0183] The above describes how terminal devices can report data in groups according to RF indicator type, modulation method, waveform type, resource block (RB) type, or CC index number or location. The following describes how terminal devices can report data based on a fallback value range, as shown in Method 1 below, or based on an RF indicator range, as shown in Method 2 below:

[0184] Method 1: The method further includes: the terminal device determining a first range, the first information including at least one of the following: a first power back-off value within the first range, or a first radio frequency indicator corresponding to the first power back-off value within the first range.

[0185] The first range may include the range of the first power back-off value, and can be described as a back-off value range. For example, the first range is [OBOmin, OBOmax]. Correspondingly, the terminal device reports the first power back-off value falling within the first range and / or the value of the first radio frequency indicator corresponding to the first power back-off value falling within the first range. Optionally, the number of first power back-off values ​​reported by the terminal device can be predefined. Optionally, the first power back-off values ​​reported by the terminal device falling within the first range can be reported uniformly at a first interval. Optionally, the first interval can be represented by ΔOBO. ​​Optionally, the first range, the number of reported first power back-off values, or the first interval corresponding to different radio frequency indicator types can be the same or different. For example, the first range corresponding to the radio frequency indicator type ACLR is [OBOmin1, OBOmax1], and the first range corresponding to the radio frequency indicator type SEM is [OBOmin2, OBOmax2], where [OBOmin1, OBOmax1] and [OBOmin2, OBOmax2] are different. For example, the first interval for the radio frequency indicator type ACLR is 1dB, and the first interval for the radio frequency indicator type SEM is 2dB.

[0186] In the above method, by sending the first power back-off value within the first range and / or the first radio frequency index corresponding to the first power back-off value within the first range, certain specific application scenarios can be met and reporting overhead can be reduced.

[0187] Method 2: The method further includes: determining a second range; the first information includes at least one of the following: the value of a first radio frequency indicator within the second range, or a first power back-off value corresponding to the value of the first radio frequency indicator within the second range.

[0188] The second range may include the range of values ​​of the first radio frequency indicator, and can be alternatively described as a radio frequency indicator range. For example, the second range is [Xmin, Xmax], and correspondingly, the terminal device reports the values ​​of the first radio frequency indicator falling within the second range and / or the first power back-off value corresponding to the values ​​of the first radio frequency indicator falling within the second range. Optionally, the number of values ​​of the first radio frequency indicator reported by the terminal device can be predefined. Optionally, the values ​​of the first radio frequency indicator falling within the second range reported by the terminal device can be reported uniformly at a second interval, and optionally, the second interval can be represented by ΔX. Optionally, the second range, the number of reported values ​​of the first radio frequency indicator, or the second interval corresponding to different radio frequency indicator types can be the same or different.

[0189] In the above method, by sending the value of the first radio frequency indicator within the second range, or the first power back-off value corresponding to the value of the first radio frequency indicator within the second range, certain specific application scenarios can be met and reporting overhead can be reduced.

[0190] The above explains that the terminal device can report based on a range of backoff values ​​or a range of radio frequency indicators. The following describes how the terminal device can report at least one corresponding first power backoff value according to a third interval, as shown in method A below; or it can also report at least one corresponding first radio frequency indicator value according to a fourth interval, as shown in method B below:

[0191] Method A: The terminal device reports at least one corresponding first power backoff value according to the third interval.

[0192] Optionally, the third interval can be configured by the network device or agreed upon by the protocol. The terminal device reporting at least one corresponding first power backoff value according to the third interval may include: the first power backoff value corresponding to a certain range of the first radio frequency indicator value reported by the terminal device according to the third interval. Optionally, the third interval may be the same as or different from the aforementioned second interval.

[0193] In one example, the first radio frequency indicator is ACLR, the third interval is 5dB, and the terminal device reports the first power backoff value corresponding to 20-40dB of the first radio frequency indicator ACLR value at 5dB intervals. Among them, the first power backoff value corresponding to the first radio frequency indicator ACLR value of 20dB is OBO0, the first power backoff value corresponding to the first radio frequency indicator ACLR value of 25dB is OBO1, the first power backoff value corresponding to the first radio frequency indicator ACLR value of 30dB is OBO2, the first power backoff value corresponding to the first radio frequency indicator ACLR value of 35dB is OBO3, and the first power backoff value corresponding to the first radio frequency indicator ACLR value of 40dB is OBO4. Accordingly, the terminal device sends first information, which includes five first power backoff values, namely OBO0, OBO1, OBO2, OBO3, and OBO4.

[0194] Method B: The terminal device reports the value of at least one first radio frequency indicator according to the fourth interval.

[0195] Optionally, the fourth interval can be configured by the network device or agreed upon by the protocol. The terminal device reporting the value of at least one corresponding first radio frequency indicator according to the fourth interval may include: the terminal device reporting the value of the first radio frequency indicator corresponding to a certain range of the first power back-off value according to the fourth interval. Optionally, the fourth interval may be the same as or different from the aforementioned first interval.

[0196] In one example, the fourth interval is 1dB. The terminal device reports the values ​​of the first radio frequency indicators corresponding to the first power backoff values ​​of 1-5dB at 1dB intervals. Specifically, the value of the first radio frequency indicator corresponding to the first power backoff value of 1dB is X0, the value of the first radio frequency indicator corresponding to the first power backoff value of 2dB is X1, the value of the first radio frequency indicator corresponding to the first power backoff value of 3dB is X2, the value of the first radio frequency indicator corresponding to the first power backoff value of 4dB is X3, and the value of the first radio frequency indicator corresponding to the first power backoff value of 5dB is X4. Correspondingly, the terminal device sends first information, which includes the values ​​of the five first radio frequency indicators, namely X0, X1, X2, X3, and X4.

[0197] It should be noted that the terminal device may report at least one first radio frequency indicator and / or at least one first power back-off value in a sequential or reverse order manner. In one example, the terminal device reports the value of at least one first radio frequency indicator in a sequential manner. For example, the terminal device sends first information, which includes the values ​​of five first radio frequency indicators, namely X0, X1, X2, X3, and X4. In another example, the terminal device reports the value of at least one first radio frequency indicator in a reverse order manner. For example, the terminal device sends first information, which includes the values ​​of five first radio frequency indicators, namely X4, X3, X2, X1, and X0. The terminal device may report at least one first radio frequency indicator and / or at least one first power back-off value in the form of the difference from the first reported value, or in the form of the difference from the previous reported value. In one example, the terminal device sends first information, which includes the values ​​of five first radio frequency (RF) indicators: X0, ΔX1, ΔX2, ΔX3, and ΔX4. ΔX1 is the difference between the reported second RF indicator value and the first reported RF indicator value X0; ΔX2 is the difference between the reported third RF indicator value and the first reported RF indicator value X0; and so on. In another example, the terminal device sends first information, which includes five first power backoff values: OBO0, ΔOBO1, ΔOBO2, ΔOBO3, and ΔOBO4. ΔOBO1 is the difference between the reported second power backoff value and the first reported power backoff value OBO0; ΔOBO2 is the difference between the reported third power backoff value and the first reported power backoff value OBO0; and so on.

[0198] In another possible implementation, the method further includes: the terminal device determining at least one of the following according to a first condition: at least one first radio frequency indicator, or a first power back-off value corresponding to at least one first radio frequency indicator.

[0199] The first condition is related to one or more of the following: modulation and coding scheme (MCS) size, waveform type, number of resource blocks, or index number or position of component carriers. In one example, the first condition includes: when the terminal device determines that MCS ≤ MCS thd The system determines that at least one reported first radio frequency indicator is ACLR or SEM, and / or the first power back-off value corresponding to ACLR or SEM; otherwise, it determines that at least one reported first radio frequency indicator is EVM, and / or the first power back-off value corresponding to EVM. Among these, MCS... thd The threshold can be predefined by the protocol or configured by the network device.

[0200] The above methods can reduce reporting costs and avoid reporting useless information, thus preventing resource waste.

[0201] In another possible implementation, the method further includes: the terminal device receiving first instruction information.

[0202] Optionally, the terminal device receives first indication information from the network device. Optionally, before sending the first information to the network device, the terminal device receives first indication information from the network device. The first indication information is used to indicate the priority information of the first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator or the priority information corresponding to different types of first radio frequency indicators. The following will describe two cases in detail:

[0203] Scenario 1: The priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator. The terminal device sends first information, which includes at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to at least one first radio frequency indicator. This includes: the terminal device sending first information based on the type of the first priority radio frequency indicator, whereby the first information includes at least one of the following: the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator, or the first power backoff value corresponding to the first radio frequency indicator corresponding to the type of the first priority radio frequency indicator. This process may include: the network device sending first indication information, which includes the type of the first priority radio frequency indicator; correspondingly, the terminal device reporting the first radio frequency indicator of the type of the first priority radio frequency indicator and / or the first power backoff value corresponding to the first radio frequency indicator of the type of the first priority radio frequency indicator.

[0204] In one example, the network device sends first indication information to indicate priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator, for example, the type of the first priority radio frequency indicator is ACLR. The terminal device sends first information, which includes at least one of the following: the value of the radio frequency indicator being ACLR, or the first power back-off value corresponding to the value of the radio frequency indicator being ACLR.

[0205] In another example, the network device sends first indication information to indicate priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator. For example, the type of the first priority radio frequency indicator is an indicator type used to indicate out-of-band leakage. The terminal device sends first information, which includes at least one of the following: the radio frequency indicator is a value of SEM, ALCR, or spurious emissions, or a first power back-off value corresponding to the value of the radio frequency indicator SEM, ALCR, or spurious emissions.

[0206] In the above method, by indicating the first priority radio frequency index type through the first indication information, the terminal device reports the first radio frequency index corresponding to the first priority radio frequency index type and / or the corresponding first power back-off value, which can reduce the processing overhead of the terminal device and reduce the signaling overhead.

[0207] Scenario 2: The priority information of the first radio frequency indicator includes the priority corresponding to different types of first radio frequency indicators. The priority corresponding to different types of first radio frequency indicators includes priority A and priority B. Priority A is the priority corresponding to the first type of first radio frequency indicator, and priority B is the priority corresponding to the second type of first radio frequency indicator. The priority of priority A is higher than the priority of priority B.

[0208] In one possible implementation, the terminal device sends first information, which includes at least one of the following: at least one first radio frequency (RF) indicator, or at least one first power backoff value corresponding to at least one first RF indicator. This includes sending the first information based on the priority of different types of first RF indicators, where the first information includes at least one of the following: a first type of first RF indicator, or a first power backoff value corresponding to a first type of first RF indicator. The process may include: a network device indicating the priority of different types of first RF indicators; and the terminal device reporting the first RF indicator with higher priority and / or the first power backoff value corresponding to the higher priority first RF indicator based on the priority of the different types of first RF indicators.

[0209] In one example, the network device sends a first indication information, which is used to indicate the priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes: a first type of first radio frequency indicator is ACLR, and the priority of ACLR is priority A; a second type of first radio frequency indicator is EVM, and the priority of EVM is priority B. Priority A is higher than priority B. Accordingly, the terminal device sends first information based on the first indication information. The first information includes ACLR or a first power back-off value corresponding to ACLR.

[0210] In another possible implementation, the terminal device sends first information, which includes at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to at least one first radio frequency indicator. This includes: the terminal device sending the first information based on second indication information and the priority of different types of first radio frequency indicators. The second indication information is used to indicate that a first type of first radio frequency indicator should be reported. The first information includes at least one of the following: a first type of first radio frequency indicator, or a first power backoff value corresponding to a first type of first radio frequency indicator. The second indication information indicating that a first type of first radio frequency indicator should be reported may include indicating that the first radio frequency indicator to be reported is of the first type. This process may include: the terminal device selecting to report a first type of first radio frequency indicator and / or a first power backoff value corresponding to the first type of first radio frequency indicator based on the second indication information and the priority of different types of first radio frequency indicators.

[0211] In one example, the second indication information indicates that the first radio frequency indicator of the first type reported is ACLR. The network device sends the first indication information, which is used to indicate the priority information of the first radio frequency indicator. The priority information of the first radio frequency indicator includes: the first radio frequency indicator of the first type is ACLR, and the priority of ACLR is priority A; the first radio frequency indicator of the second type is EVM, and the priority of EVM is priority B. Among them, priority A is higher than priority B. Accordingly, the terminal device sends the first information based on the second indication information. The first information includes ACLR or the first power back-off value corresponding to ACLR.

[0212] In the above method, by having the network device indicate the priority of different types of first radio frequency indicators, and the terminal device reporting the first radio frequency indicator with higher priority and / or the first power backoff value corresponding to the higher priority first radio frequency indicator based on the priority of the first radio frequency indicator with different types, the reporting overhead can be reduced. By having the terminal device select to report the first type of first radio frequency indicator and / or the first power backoff value corresponding to the first type of first radio frequency indicator based on the second indication information and the priority of the first radio frequency indicator with different types, the instructions of the network device can be satisfied, and the reporting overhead can be reduced.

[0213] Step S1202: The network device sends the second information to the terminal device.

[0214] Correspondingly, the terminal device receives the second information from the network device.

[0215] The second information includes at least one of the following: at least one second radio frequency (RF) indicator, or at least one second power back-off value. Optionally, the value of each of the at least one RF indicator corresponds to one of the at least one second power back-off values. The second RF indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks, or index number or position of component carriers. The frequency range may include at least one of the following: FR1, FR2, or frequency range 3 (FR3).

[0216] Wherein, the value of at least one of the at least two second radio frequency (RF) indicators is a changed value of one of the at least one first RF indicators corresponding to the second RF indicator. This changed value may include an updated value or a relaxed value. For example, the value of at least one first RF indicator and / or at least one first power back-off value may be simply referred to as the value before the change, the value before the update, or the value before the relaxation; the value of at least one second RF indicator and / or at least one second power back-off value may be simply referred to as the changed value, the updated value, or the relaxed value. For example, the first and second RF indicators include at least one of the following: EVM, ACLR, or SEM; the value of at least one second RF indicator being a changed value of one of the at least one first RF indicators corresponding to the second RF indicator includes: the value of at least one second RF indicator being an increased value of one of the at least one first RF indicators corresponding to the second RF indicator. In one example, the first and second radio frequency (RF) indicators are EVM (Electronic Dynamics Value). The terminal device sends first information, which includes: the value of the first RF indicator is 30% under π / 2 BPSK modulation, and the ACLR (Advanced Channel Limiting Ratio) is -30dB in the FR1 frequency band. The network device sends second information, which includes: the value of the second RF indicator is 40% under π / 2 BPSK modulation, and the ACLR (Advanced Channel Limiting Ratio) is -20dB in the FR1 frequency band. The value of the second radio frequency indicator, i.e., under π / 2BPSK modulation, is 40% of the EVM value, which is the value of the first radio frequency indicator corresponding to the second radio frequency indicator, i.e., under π / 2BPSK modulation, is 30% increased, with an increment of 10%. The value of the second radio frequency indicator, i.e., when the frequency band range is FR1, is -20dB, which is the value of the first radio frequency indicator corresponding to the second radio frequency indicator, i.e., when the frequency band range is FR1, is -30dB increased, with an increment of 10dB. Optionally, the value of a second radio frequency indicator can be expressed as a specific numerical value, or as an increment or decrement relative to the value of a corresponding first radio frequency indicator; this application embodiment does not limit this. For example, when the first and second radio frequency indicators include MPR, the value of one of the at least one second radio frequency indicator, corresponding to a change in one of the at least one first radio frequency indicators, includes: the value of one of the at least one second radio frequency indicator, corresponding to a decrease in one of the at least one first radio frequency indicators.

[0217] In this embodiment, at least one second radio frequency (RF) indicator corresponds to at least one first RF indicator. This correspondence can be either a one-to-one correspondence or a non-one-to-one correspondence. In one example, at least one second RF indicator and at least one first RF indicator have a one-to-one correspondence. For instance, at least one first RF indicator includes ACLR and EVM, and the value of the at least one first RF indicator includes the ACLR value before relaxation and the EVM value before relaxation. Correspondingly, at least one second RF indicator includes ACLR and EVM, and the value of the at least one second RF indicator includes the ACLR value after relaxation and the EVM value after relaxation, wherein the value of the relaxed ACLR is the changed value of the ACLR value before relaxation, and the value of the relaxed EVM is the changed value of the EVM value before relaxation. In another example, at least one second RF indicator and at least one first RF indicator do not have a one-to-one correspondence. For instance, at least one first RF indicator includes ACLR and EVM, and the value of the at least one first RF indicator includes the ACLR value before relaxation and the EVM value before relaxation. At least one second RF indicator includes ACLR, and the value of the at least one second RF indicator includes the ACLR value after relaxation, wherein the value of the relaxed ACLR is the changed value of the ACLR value before relaxation.

[0218] The second information is determined based on the first information. This determination includes: the second information is determined based on the first information and at least one of the following, or in other words, the network device determines the second information based on the first information and at least one of the following. The following at least one includes: terminal device capability information, network device capability information, coverage requirements, or application scenarios, etc. For example, the terminal device capability information includes one of the following: whether the terminal device supports power boost or power backoff reduction. The network device capability information may include one of the following: whether it has receiver non-ideal anti-aliasing capability or new waveform processing capability; optionally, the new waveform may include an FDSS-based waveform or a filter SC-QAM waveform. Coverage requirements include high coverage requirements or low coverage requirements. In the above method, after receiving a signal, the network device can compensate for some parameter degradation based on its capability information, effectively improving the uplink coverage capability of the terminal device and enhancing the user experience.

[0219] In one possible implementation, the second information includes at least one second radio frequency indicator associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks, or index number or position of component carriers.

[0220] In one example, the first and second radio frequency (RF) indicators are referred to as EVM, as shown in Table 6. Table 6 lists the values ​​of the first and second RF indicators under different modulation schemes. The current 3GPP technical specification TS38.101 V18.7.0 defines the values ​​of the first RF indicator under different modulation schemes, as shown in Table 2. Network devices can define new EVM values, i.e., the values ​​of the second RF indicators. Table 6 presents the second RF indicator values ​​as absolute values, but it can also represent them as increments relative to existing protocols (e.g., existing protocols define the first RF indicator values ​​as shown in Table 2). For example, when the modulation scheme is π / 2-BPSK, the value of the second RF indicator is 10%, which is an increment of 30% relative to the value of the first RF indicator. This embodiment of the application does not limit this.

[0221] Table 6

[0222] In another example, the first and second radio frequency indicators are ACLRs, as shown in Table 7. Table 7 lists the values ​​of the first and second radio frequency indicators for different frequency band ranges. The current 3GPP technical specification TS38.101 V18.7.0 defines the values ​​of the first radio frequency indicator for different frequency band ranges, as shown in Table 1. Network devices can define new ACLR indicator values, i.e., the values ​​of the second radio frequency indicator. Table 7 presents the second radio frequency indicator values ​​as absolute values, but it can also represent them as increments relative to existing protocols (e.g., existing protocols define the first radio frequency indicator values ​​as shown in Table 1). For example, in the FR1 frequency band range, the second radio frequency indicator value is 10 dB, which is an increment relative to the first radio frequency indicator value - 30. This application embodiment does not limit this.

[0223] Table 7

[0224] In another possible implementation, the second information includes at least one second radio frequency indicator, which includes MPR. Optionally, the at least one radio frequency indicator is associated with at least one of the following, including: modulation scheme, waveform type, number of resource blocks, or index number or position of component carriers.

[0225] For example, a network device sends the values ​​of a second radio frequency (RF) indicator to a terminal device under different modulation schemes, waveforms, resource block allocations, or component carriers. This second RF indicator includes the Maximum Power Reduction (MPR). Optionally, the MPR can be determined by the network device based on other types of second RF indicators besides the MPR. The current 3GPP technical specification TS38.101 V18.7.0 defines the values ​​of a first RF indicator under different modulation schemes, waveforms, resource block allocations, or component carriers, as shown in Table 3. The network device can define a new MPR value, i.e., the value of the second RF indicator, as shown in Table 8. Table 8 defines new MPR value requirements for signals with different waveforms and modulations for Power Class 3. The values ​​of the second RF indicator in Table 8 are expressed as absolute values, but can also be expressed as relative values. The absolute value can also be called the absolute maximum power reduction value, and the relative value can be a reduction relative to existing protocols (e.g., existing protocols define the values ​​of the first RF indicator as shown in Table 3). This application embodiment does not limit this.

[0226] Table 8

[0227] It should be noted that when the network device sends the values ​​of a second radio frequency indicator (RF indicator) under different modulation schemes, waveforms, resource block allocations, or component carriers to the terminal device, this second RF indicator includes the MPR (Multi-Level Radio Frequency). The network device also needs to indicate the relationship between the MPR and the values ​​of other types of second RF indicators besides the MPR. Accordingly, the terminal device can determine the transmit power or power backoff value based on the relationship between the MPR and the values ​​of other types of second RF indicators besides the MPR. For example, the other types of second RF indicators besides the MPR can be one or more; for instance, when there are multiple other types of second RF indicators besides the MPR, they can include ACLR (Advanced Frequency Ratio), EVM (Electronic Dynamics), and SEM (Self-Electronic Dynamics).

[0228] In one example, the second information includes at least one second radio frequency (RF) indicator, which includes: when the waveform is DFT-s-OFDM, the modulation scheme is π / 2BPSK, and the edge RB allocation is 2dB, the network device indicates to the terminal device that the corresponding EVM value needs to be increased by 10%, that is, the EVM is increased by 10% relative to the existing protocol under the modulation scheme of π / 2BPSK, wherein the existing protocol defines the EVM value as 30% under the modulation scheme of π / 2BPSK. The value of the second RF indicator is determined to include EVM = 40% under the modulation scheme of π / 2BPSK. Accordingly, the terminal device determines the transmit power based on the value of the second RF indicator including EVM = 40% under the modulation scheme of π / 2BPSK, and transmits the signal based on the transmit power.

[0229] In another example, the second information includes at least one second radio frequency indicator, the value of which includes: MPR = 2dB when the waveform is DFT-s-OFDM, the modulation scheme is π / 2BPSK, and the edge RB allocation is π / 2BPSK, and EVM = 40% when the modulation scheme is π / 2BPSK. The network device sends indication information to the terminal device, indicating that MPR = 2dB corresponds to EVM = 40%. Accordingly, the terminal device determines the transmit power based on the value of the at least one second radio frequency indicator and the indication information, and transmits a signal based on the transmit power.

[0230] In another possible implementation, the second information includes at least one second power back-off value corresponding to at least one second radio frequency indicator, or the second information includes at least one second transmit power corresponding to at least one second radio frequency indicator.

[0231] The process may include: the network device directly instructing the terminal device on the second transmit power or the second power backoff value corresponding to the second radio frequency indicator.

[0232] In one example, the network device configures an index of a table of second radio frequency indicators and second power back-off values ​​corresponding to the second radio frequency indicators. The second radio frequency indicators and second power back-off values ​​may be associated with at least one of the following: modulation scheme, waveform type, number of resource blocks, or index number or position of component carriers. The terminal device determines the second radio frequency indicators and second power back-off values ​​based on the configured index of the table of second radio frequency indicators and second power back-off values, and then determines the transmit power or power back-off value.

[0233] In another example, when the terminal device reports the first radio frequency indicator and / or the first power backoff value corresponding to the first radio frequency indicator, it may report it in the form of a table index. The network device selects some or all of the reported table index to instruct the terminal device, which also implicitly notifies the terminal device to use the first radio frequency indicator and the first power backoff value corresponding to the first radio frequency indicator as the second radio frequency indicator and the second power backoff value corresponding to the second radio frequency indicator. At this time, at least one of the following has a new binding relationship corresponding to some or all of the reported table index selected by the network device: modulation method, waveform type, number of resource blocks, or index number or position of component carrier. It should be noted that the information configured or indicated by the network device in the table index of the second radio frequency indicator and the second power backoff value corresponding to the second radio frequency indicator, or the information selected by the network device in the table index to instruct the terminal device, can be carried in uplink scheduling signaling. For example, the uplink scheduling signaling may include downlink control information (DCI), MAC CE, or RRC signaling for configuring uplink transmission. This application embodiment does not limit this.

[0234] It should be noted that when the second information sent by the network device to the terminal device includes at least one second power backoff value corresponding to at least one second radio frequency indicator, or when the second information includes a second transmit power, the second transmit power is the transmit power determined by the terminal device based on the second information. This can be understood as the network device directly instructing the terminal device on the transmit power, and a conflict may arise between the transmit power indicated by the network device and the transmit power determined by the terminal device based on the protocol-predefined first radio frequency indicator. In this case, the terminal device will transmit the signal according to the transmit power indicated by the network device. In one example, the network device sends second information to the terminal device, which includes a second transmit power of 25dB. If the terminal device determines the transmit power to be 24dB according to the protocol-predefined first radio frequency indicator, such as when the EVM is 30%, then the terminal device will determine to transmit the signal according to the transmit power of 25dB indicated by the network device.

[0235] Step S1203: The terminal device determines the transmission power or power back-off value based on the second information.

[0236] For example, the second information includes at least one second radio frequency (RF) indicator, and the terminal device determines the transmit power or power backoff value based on the value of the at least one second RF indicator; the second information includes at least one second power backoff value, and the terminal device can determine the transmit power or power backoff value based on the at least one second power backoff value. The terminal device determining the transmit power based on the at least one second power backoff value may include: the terminal device determining the transmit power based on the at least one second power backoff value and a maximum transmit power of the terminal device predefined in the protocol. Further, it needs to be specified whether the maximum transmit power of the terminal device predefined in the protocol is before or after the change. The terminal device can determine the power backoff value based on the at least one second power backoff value. The power backoff value can be at least one second power backoff value.

[0237] In the above method, by sending signals based on the transmission power or power backoff value determined by the second information, the transmission power can be increased, effectively improving the uplink coverage capability of the terminal equipment.

[0238] In one possible implementation, at least one second radio frequency indicator in the second information is a second radio frequency indicator of a first type, and at least one second power back-off value is a power back-off value corresponding to the second radio frequency indicator of the first type; the terminal device determines the transmit power or power back-off value based on the second information, including: the terminal device determines the transmit power or power back-off value based on at least one of the second radio frequency indicator of the first type or the second power back-off value corresponding to the second radio frequency indicator of the first type.

[0239] This can be understood as the network device sending at least one second radio frequency indicator, which is a type of radio frequency indicator, and the terminal device determines the transmit power or power back-off value based on this type of radio frequency indicator.

[0240] In one example, at least one second radio frequency indicator is a first type of second radio frequency indicator, which includes an ACLR value of -20dB under π / 2BPSK modulation. The terminal device determines the transmit power or power back-off value based on the first type of second radio frequency indicator, i.e., an ACLR value of -20dB under π / 2BPSK modulation.

[0241] In the above-described manner, by using at least one second radio frequency indicator indicated by the network device as a second radio frequency indicator of the first type, indication overhead and signaling overhead can be reduced. Furthermore, by determining the transmit power or power backoff value based on the second radio frequency indicator of the first type and / or the second power backoff value corresponding to the second radio frequency indicator of the first type, the processing overhead of the terminal device can be reduced.

[0242] In another possible implementation, at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator. The method further includes: the terminal device receiving third indication information, the third indication information indicating that the priority of the first type of second radio frequency indicator is priority C, the priority of the second type of second radio frequency indicator is priority D, and the priority of priority C is higher than the priority of priority D; the terminal device determining the transmit power or power backoff value based on the second information, including: determining the transmit power or power backoff value based on at least one of at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator, or the second power backoff value corresponding to at least one second radio frequency indicator corresponding to the first type of second radio frequency indicator.

[0243] This process can be understood as follows: at least one second radio frequency indicator includes different types of second radio frequency indicators; the network device sends the priority of different types of second radio frequency indicators to the terminal device; and the terminal device determines the transmit power or power backoff value based on the higher priority second radio frequency indicator.

[0244] In one example, at least one second radio frequency indicator includes an ACLR value of -20dB under π / 2BPSK modulation and an EVM value of 40% under π / 2BPSK modulation. The first type of second radio frequency indicator is ACLR, and the second type of second radio frequency indicator is EVM. The priority corresponding to ACLR is priority C, and the priority corresponding to EVM is priority D. Priority C has a higher priority than priority D. The terminal device determines the transmit power or power backoff value based on the ACLR value of -20dB under π / 2BPSK modulation.

[0245] In the above method, when the second information sent by the network device includes different types of second radio frequency indicators and / or second power back-off values ​​corresponding to different types of second radio frequency indicators, by defining the priority of different types of second radio frequency indicators, it is possible to avoid the situation where the terminal device cannot determine which type of second radio frequency indicator and / or which type of second radio frequency indicator corresponds to the second power back-off value to determine the transmission power, which is beneficial to improving the efficiency of the terminal device in determining the transmission power.

[0246] Optionally, when the higher-priority second radio frequency indicator and the lower-priority second radio frequency indicator are of the same type, the transmit power determined by the higher-priority second radio frequency indicator is larger, while the transmit power determined by the lower-priority second radio frequency indicator is smaller. In this case, the lower-priority second radio frequency indicator can be modified to ensure that the transmit power determined based on the modified lower-priority second radio frequency indicator is the same as the transmit power determined based on the higher-priority second radio frequency indicator, thereby avoiding errors.

[0247] In one example, at least one second radio frequency indicator includes: an ACLR value of -20dB in π / 2BPSK modulation and a Δf value when the channel bandwidth is 100MHz in π / 2BPSK modulation. OOB The measurement bandwidth is ±0-1MHz, and the SEM value is less than -20dB. ACLR and SEM are the same type of RF indicator, representing out-of-band leakage. ACLR has higher priority than SEM. The terminal device, based on ACLR of -20dB under π / 2BPSK modulation, determines the transmit power as power 1. Based on π / 2BPSK modulation, when the channel bandwidth is 100MHz, Δf... OOB The range is ±0-1MHz, the measurement bandwidth is 30kHz, and the transmit power determined by the SEM value being less than -20dB is power 2. Among these, power 1 is greater than power 2. The terminal device modifies the SEM value to be less than -20dB, for example, by modifying the SEM value to -15dB. The transmit power determined based on the SEM value of -15dB is power 1.

[0248] In another possible implementation, at least one second radio frequency indicator includes different types of second radio frequency indicators. The network device sends the priority of different types of second radio frequency indicators to the terminal device. Accordingly, the terminal device determines the transmit power or power backoff value based on the minimum power backoff value among at least one second power backoff value corresponding to at least one second radio frequency indicator. This can be understood as the terminal device comparing at least one second power backoff value corresponding to at least one second radio frequency indicator, determining the minimum second power backoff value, and determining the transmit power based on this minimum second power backoff value and the maximum transmit power of the terminal device predefined by the protocol. Furthermore, it needs to be clarified whether the maximum transmit power of the terminal device predefined by the protocol is before or after the change.

[0249] Step S1204: The terminal device sends a signal based on the transmit power or power backoff value.

[0250] The terminal device transmitting a signal based on the transmission power includes the terminal device transmitting a signal at a determined transmission power, and the terminal device transmitting a signal based on the power backoff value includes the terminal device determining the transmission power based on the power backoff value, and then transmitting the signal at the determined transmission power.

[0251] In the method described in Figure 12, the transmit power corresponding to the first information is less than the transmit power determined by the second information. This method increases the transmit power of the terminal device, effectively improving its uplink coverage. Taking the first and second radio frequency indicators as the error vector amplitude (EVM) as an example, the first radio frequency indicator in the first information includes a value of 30% under π / 2BPSK modulation. The second radio frequency indicator in the second information includes a value of 40% under π / 2BPSK modulation. A transmit power of 30% corresponds to transmit power 1, and transmit power 2 is determined based on a transmit power of 40%. Transmit power 1 is less than transmit power 2. Therefore, this method increases the transmit power of the terminal device, effectively improving its uplink coverage and simultaneously increasing the power amplifier (PA) efficiency, achieving energy saving. Furthermore, it enables compatible scenarios, such as compatibility with older waveforms, like Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). Because older waveforms are less compatible than newer waveforms, such as filtered single-carrier orthogonal amplitude modulation (ACEM) waveforms... SC-QAM has a small coverage area, but the above method can improve the coverage of older waveforms.

[0252] It should be noted that the terminal device in Figure 12 can be one or more terminal devices, and the network device in Figure 12 can be one or more network devices. This application embodiment does not limit the scope of the application.

[0253] It should be noted that when the embodiments of this application are applied to an open RAN architecture, for example, the network device can be the access network device in Figure 2. The network device includes a CU, DU, or RU. The interaction between the CU, DU, or RU and the terminal device can be referred to Figure 12, and the network device in Figure 12 can be replaced with a CU, DU, or RU. In one possible implementation, the network device includes a CU and a DU. In step S1201, the network device receiving first information from the terminal device may refer to the CU in the network device receiving first information from the terminal device. Optionally, the CU in the network device sends the first information to the DU. The DU in the network device determines second information based on the first information and sends the second information to the CU. In step S1202, the network device sending the second information to the terminal device may refer to the CU in the network device sending the second information to the terminal device.

[0254] The methods of the embodiments of this application have been described in detail above, and the apparatus of the embodiments of this application is provided below.

[0255] Please refer to Figure 13. Figure 13 is a structural schematic diagram of a communication device 1300 provided in an embodiment of this application. The communication device 1300 may include modules, units, or means that correspond one-to-one with the methods / operations / steps / actions performed by the terminal-side device or network-side device in the above method embodiments. The modules, units, or means may be hardware circuits, software, or a combination of hardware circuits and software.

[0256] In one possible implementation, the communication device 1300 may include a processing unit 1301 and a transceiver unit 1302, the specific details of which are as follows:

[0257] The processing unit 1301 is used for data processing. The transceiver unit 1302 can implement corresponding communication functions. The transceiver unit 1302 can also be called a communication interface or a communication module.

[0258] Optionally, the communication device 1300 may further include a storage unit, which can be used to store instructions and / or data. The processing unit 1301 can read the instructions and / or data in the storage module to enable the implementation of the aforementioned method embodiments.

[0259] Optionally, the transceiver unit 1302 may include a sending unit and a receiving unit. The sending unit is used to perform the sending operation in the above method embodiments. The receiving unit is used to perform the receiving operation in the above method embodiments.

[0260] It should be noted that the communication device 1300 may include a transmitting unit but not a receiving unit. Alternatively, the communication device 1300 may include a receiving unit but not a transmitting unit. Specifically, it depends on whether the above-described scheme executed by the communication device 1300 includes both transmitting and receiving actions.

[0261] Optionally, the communication device 1300 is used to perform the actions performed by the terminal device in the embodiment shown in FIG12 above. For details, please refer to the relevant description in the embodiment shown in FIG12 above; it will not be elaborated here. For example, the communication device 1300 is configured to execute the following scheme: the transceiver unit 1302 is configured to transmit first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to the at least one first radio frequency indicator, wherein any one of the at least one first radio frequency indicator includes the value of at least one first radio frequency indicator, each value of the at least one first radio frequency indicator corresponds to a first power backoff value, and the first power backoff value is one of the at least one first power backoff values; the transceiver unit 1302 is further configured to receive second information, the second information including at least one of the following: at least one second radio frequency indicator, or at least one second power backoff value; the second information is determined based on the first information, the at least one second radio frequency indicator and the at least one first radio frequency indicator have a corresponding relationship, and the value of one of the at least one second radio frequency indicator corresponds to the value of one of the at least one first radio frequency indicator of the at least one second radio frequency indicator after a change; the processing unit 1301 is configured to determine the transmit power or power backoff value based on the second information.

[0262] It should be noted that the implementation and beneficial effects of each module can also be described in the corresponding description of the method embodiment shown in Figure 11.

[0263] Optionally, the communication device 1300 is used to perform the actions performed by the network device in the embodiment shown in FIG12 above. For details, please refer to the relevant description in the embodiment shown in FIG12 above; it will not be elaborated here. For example, the communication device 1300 is configured to execute the following scheme: the transceiver unit 1302 is configured to receive first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power backoff value corresponding to the at least one first radio frequency indicator, wherein any one of the at least one first radio frequency indicator includes the value of at least one first radio frequency indicator, each value of the at least one first radio frequency indicator corresponds to a first power backoff value, and the first power backoff value is one of the at least one first power backoff values; the processing unit 1301 is configured to determine second information based on the first information, the second information including at least one of the following: at least one second radio frequency indicator, or at least one second power backoff value; the at least one second radio frequency indicator and the at least one first radio frequency indicator have a corresponding relationship, the value of one of the at least one second radio frequency indicator corresponds to the value of the at least one first radio frequency indicator after a change in the at least one first radio frequency indicator of the at least one second radio frequency indicator, the second information is used to determine the transmit power or the power backoff value; the transceiver unit 1302 is configured to transmit the second information.

[0264] It should be noted that the implementation and beneficial effects of each module can also be described in the corresponding description of the method embodiment shown in FIG12. The division of modules in this application embodiment is illustrative and is only a logical functional division. In actual implementation, there may be other division methods.

[0265] The processing unit 1301 in the above embodiments can be implemented by at least one processor or processor-related circuitry. The transceiver unit 1302 can be implemented by a transceiver or transceiver-related circuitry. The transceiver unit 1302 can also be referred to as a communication module or communication interface. The storage module can be implemented by at least one memory.

[0266] Please refer to Figure 14. Figure 14 is a structural schematic diagram of another communication device 1400 provided in the embodiment of this application. The communication device 1400 may include modules, units or means that correspond one-to-one with the methods / operations / steps / actions performed by the terminal-side device or network-side device in the above method embodiments. The modules, units or means may be hardware circuits, software, or hardware circuits combined with software.

[0267] The communication device 1400 includes at least one processor 1401. Optionally, it also includes a communication interface 1403 and a memory 1402. The processor 1401, memory 1402, and communication interface 1403 are interconnected via a bus 1404. Optionally, the processor 1401 and memory 1402 can be integrated together.

[0268] The memory 1402 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM), and is used for related computer programs and data. The communication interface 1403 is used for receiving and sending data.

[0269] Processor 1401 can be one or more central processing units (CPUs). When processor 1401 is a CPU, the CPU can be a single-core CPU or a multi-core CPU.

[0270] The processor 1401 in the communication device 1400 is used to read computer programs or instructions stored in the memory 1402 to implement the functions of the processing unit, and the communication interface 1403 in the communication device 1400 is used to implement the functions of the transceiver unit.

[0271] Please refer to Figure 15, which is a schematic diagram of another communication device 1500 provided in an embodiment of this application, used to implement the communication method provided in this application. The communication device 1500 can be a device or component applied in a terminal device, or it can be a terminal device, a network device, or a device or component applied in a network device. The communication device 1500 can be a communication device, a device within a communication device, or a device that can be used in conjunction with a communication device. The communication device 1500 can be a chip system or a chip. In this embodiment, the chip system can be composed of chips or may include chips and other discrete devices. Some or all of the communication methods provided in the above embodiments can be implemented in hardware or software. When implemented in hardware, the communication device 1500 may include: an input interface circuit 1501, a logic circuit 1502, and an output interface circuit 1503. Optionally, taking the device's use to implement the functions of a terminal device as an example, the input interface circuit 1501 can be used to receive first information, the logic circuit 1502 can be used to execute the processing actions of the terminal device, and the output interface circuit 1503 can be used to send the first information.

[0272] Optionally, the communication device 1500 may be a chip or an integrated circuit in its specific implementation.

[0273] Some or all of the operations and functions performed by the communication device described in the above method embodiments of this application can be implemented using chips or integrated circuits.

[0274] This application also provides a computer-readable storage medium storing a computer program or instructions that, when executed on a processor, implement the method performed by a terminal device or network device in the above method embodiments.

[0275] This application also provides a computer program product, which includes a computer program or instructions that, when run on a processor, implement the method executed by a terminal device or network device in the above method embodiments.

[0276] This application also provides a communication system, which includes the terminal device and the network device described in the above embodiments. The terminal device is used to perform some or all of the operations performed by the terminal device in the above method embodiments, and the network device is used to perform some or all of the operations performed by the network device in the above method embodiments.

[0277] It is understood that the processor in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. A general-purpose processor can be a microprocessor or any conventional processor.

[0278] The method steps in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, portable hard disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a base station or terminal. Of course, the processor and storage medium can also exist as discrete components in the base station or terminal.

[0279] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media.

[0280] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0281] In the description of this application, terms such as "first", "second", "S1201" or "S1202" are used only for the purpose of distinguishing descriptions and for the convenience of context. Different sequence numbers do not have specific technical meanings themselves and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying the order of execution of operations. The order of execution of each process should be determined by its function and internal logic.

Claims

1. A communication method characterized by comprising: include: Send first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, wherein any one of the at least one first radio frequency indicator includes the value of at least one first radio frequency indicator, each value of the at least one first radio frequency indicator corresponds to a first power back-off value, and the first power back-off value is one of the at least one first power back-off values; Receive second information, the second information including at least one of the following: at least one second radio frequency indicator, or at least one second power back-off value; the second information is determined based on the first information, the at least one second radio frequency indicator and the at least one first radio frequency indicator have a corresponding relationship, and the value of one of the at least one second radio frequency indicator is the value of one of the at least one first radio frequency indicators corresponding to the change of the at least one second radio frequency indicator; The transmit power or power back-off value is determined based on the second information.

2. The method of claim 1, wherein, The value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

3. The method according to claim 1 or 2, characterized in that, The first radio frequency indicator includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

4. The method according to any one of claims 1 to 3, characterized in that, The first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; The value of one of the at least one second radio frequency indicators is the value of a first radio frequency indicator corresponding to the at least one first radio frequency indicator after a change, including: The value of one of the at least one second radio frequency indicators is the value of one of the at least one first radio frequency indicators corresponding to the second radio frequency indicator after the first radio frequency indicator is increased.

5. The method according to any one of claims 1 to 4, characterized in that, The first information also includes: capability information of the terminal device, the capability information including at least one of the following: the terminal device supports power boost, or the terminal device supports power fallback.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: The at least one first radio frequency index is grouped according to a first rule to determine at least one of the following: at least one first radio frequency index of different groups, or a first power back-off value corresponding to at least one first radio frequency index of different groups, wherein the first rule includes one or more of the following: radio frequency index type, modulation method, waveform type, resource block RB type, or index number or position of component carrier. The transmission of first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, including: Send the first information, which includes at least one of the following: at least one first radio frequency indicator of the different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of the different groups.

7. The method of claim 6, wherein, The first rule includes radio frequency indicator types. The step of grouping the at least one radio frequency indicator according to the first rule to determine at least one of the following: at least one first radio frequency indicator of different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of different groups, includes: The at least one first radio frequency indicator is grouped according to radio frequency indicator type to determine at least one of the following: at least one first radio frequency indicator in each radio frequency indicator type group, or a first power back-off value corresponding to at least one first radio frequency indicator in each radio frequency indicator type group; The transmission of first information, wherein the first information includes at least one of the following: a first radio frequency indicator of at least one of the different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of the different groups, including: Send the first information, which includes at least one of the following: at least one first radio frequency indicator of each radio frequency indicator type group, or a first power back-off value corresponding to at least one first radio frequency indicator of each radio frequency indicator type group.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: The first condition determines at least one of the following: the at least one first radio frequency indicator, or the first power back-off value corresponding to the at least one first radio frequency indicator, wherein the first condition is related to one or more of the following: modulation and coding scheme MCS size, waveform type, number of resource blocks RB, or index number or position of component carriers.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: A first range is determined, wherein the first information includes at least one of the following: a first power back-off value within the first range, or a first radio frequency indicator corresponding to the first power back-off value within the first range.

10. The method according to any one of claims 1-8, characterized in that, The method further includes: Determine a second range; the first information includes at least one of the following: the value of a first radio frequency indicator within the second range, or the first power back-off value corresponding to the value of the first radio frequency indicator within the second range.

11. The method according to any one of claims 2-10, characterized in that, The second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: Receive first indication information, the first indication information is used to indicate the priority information of the first radio frequency indicator, the priority information of the first radio frequency indicator includes the type of the first priority radio frequency indicator or the priority information corresponding to the first radio frequency indicator of different types.

13. The method according to claim 12, characterized in that, The priority information of the first radio frequency indicator includes the type of the radio frequency indicator with the first priority. The transmission of first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, including: The first information is sent based on the type of the first priority radio frequency indicator, and the first information includes at least one of the following: a first radio frequency indicator corresponding to the first priority radio frequency indicator type, or a first power back-off value corresponding to the first radio frequency indicator corresponding to the first priority radio frequency indicator type.

14. The method according to claim 12, characterized in that, The priority information of the first radio frequency indicator includes the priorities corresponding to different types of first radio frequency indicators. The priorities corresponding to the different types of first radio frequency indicators include a first priority and a second priority. The first priority is the priority corresponding to the first type of first radio frequency indicator, and the second priority is the priority corresponding to the second type of first radio frequency indicator. The first priority has a higher priority than the second priority. The transmission of first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, including: The first information is sent based on the priority corresponding to the different types of first radio frequency indicators, and the first information includes at least one of the following: the first radio frequency indicator of the first type, or the first power back-off value corresponding to the first radio frequency indicator of the first type; or The first information is sent based on the second indication information and the priority corresponding to the first radio frequency indicator of the different types. The second indication information is used to indicate the reporting of the first radio frequency indicator of the first type. The first information includes at least one of the following: the first radio frequency indicator of the first type, or the first power back-off value corresponding to the first radio frequency indicator of the first type.

15. The method according to any one of claims 1-14, characterized in that, The at least one second radio frequency indicator is a second radio frequency indicator of a first type, and the at least one second power back-off value is the second power back-off value corresponding to the second radio frequency indicator of the first type. Determining the transmit power or power backoff value based on the second information includes: The transmit power or power back-off value is determined based on at least one of the second radio frequency indicator of the first type or the second power back-off value corresponding to the second radio frequency indicator of the first type.

16. The method according to any one of claims 1-14, characterized in that, The at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator, and the method further includes: Receive third indication information, the third indication information being used to indicate that the priority of the second radio frequency indicator of the first type is priority C, the priority of the second radio frequency indicator of the second type is priority D, and the priority of priority C is higher than the priority of priority D; Determining the transmit power or power backoff value based on the second information includes: The transmit power or power back-off value is determined based on at least one of the following: at least one second radio frequency indicator corresponding to the second radio frequency indicator of the first type, or at least one second power back-off value corresponding to the second radio frequency indicator of the first type.

17. The method according to any one of claims 1-16, characterized in that, The method further includes: The signal is transmitted based on the transmit power or power backoff value.

18. A communication method, characterized in that, include: Receive first information, the first information including at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, wherein any one of the at least one first radio frequency indicator includes the value of at least one first radio frequency indicator, each value of the at least one first radio frequency indicator corresponds to a first power back-off value, and the first power back-off value is one of the at least one first power back-off values; Send the second information, which includes at least one of the following: at least one second radio frequency indicator or at least one second power back-off value; the at least one second radio frequency indicator and the at least one first radio frequency indicator are related, the value of one of the at least one second radio frequency indicator is the value of one of the at least one first radio frequency indicator corresponding to the change of the at least one first radio frequency indicator, the second information is determined based on the first information, and the second information is used to determine the transmit power or power back-off value.

19. The method according to claim 18, characterized in that, The value of each of the at least one second radio frequency indicator corresponds to one of the at least one second power back-off values.

20. The method according to claim 18 or 19, characterized in that, The second information is determined based on the first information and includes: The second information is determined based on the first information and at least one of the following, which includes: terminal device capability information, network device capability information, coverage requirements, or application scenarios.

21. The method according to any one of claims 18-20, characterized in that, The first radio frequency indicator includes at least one of the following: maximum power reduction (MPR), maximum output power (MOP), error vector magnitude (EVM), in-band radiation (IBE), adjacent channel leakage ratio (ACLR), or spectrum emission template (SEM).

22. The method according to any one of claims 18-21, characterized in that, The first radio frequency indicator and the second radio frequency indicator include at least one of the following: EVM, ACLR, or SEM; The value of one of the at least one second radio frequency indicators is the value of a first radio frequency indicator corresponding to the at least one first radio frequency indicator after a change, including: The value of one of the at least one second radio frequency indicators is the value of one of the at least one first radio frequency indicators corresponding to the second radio frequency indicator after the first radio frequency indicator is increased.

23. The method according to any one of claims 18-22, characterized in that, The first information also includes: capability information of the terminal device, the capability information including at least one of the following: the terminal device supports power boost, or the terminal device supports power fallback.

24. The method according to any one of claims 18-23, characterized in that, The receipt of first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, including: The first information is received, and the first information includes at least one of the following: at least one first radio frequency indicator of the different groups, or a first power back-off value corresponding to at least one first radio frequency indicator of the different groups, wherein at least one of the following: the at least one first radio frequency indicator of the different groups, or the first power back-off value corresponding to at least one first radio frequency indicator of the different groups, is determined by grouping the at least one first radio frequency indicator according to a first rule, and the first rule includes one or more of the following: radio frequency indicator type, modulation method, waveform type, resource block RB type, or index number or position of component carrier.

25. The method according to claim 24, characterized in that, The first rule includes radio frequency indicator types. The receipt of first information, wherein the first information includes at least one of the following: at least one first radio frequency indicator, or at least one first power back-off value corresponding to the at least one first radio frequency indicator, including: The first information is received, and the first information includes at least one of the following: at least one first radio frequency indicator for each radio frequency indicator type group, or a first power back-off value corresponding to at least one first radio frequency indicator for each radio frequency indicator type group; wherein at least one of the following: at least one first radio frequency indicator for each radio frequency indicator type group, or the first power back-off value corresponding to at least one first radio frequency indicator for each radio frequency indicator type group, is determined by grouping the at least one first radio frequency indicator according to the radio frequency indicator type.

26. The method according to any one of claims 18-25, characterized in that, The second radio frequency indicator is associated with one or more of the following: frequency range, modulation scheme, waveform type, number of resource blocks (RBs), or index number or position of component carriers.

27. The method according to any one of claims 18-26, characterized in that, The method further includes: Send a first indication message, which is used to indicate the priority information of a first radio frequency indicator. The priority information of the first radio frequency indicator includes the type of a first priority radio frequency indicator or the priority information corresponding to different types of first radio frequency indicators.

28. The method according to any one of claims 18-27, characterized in that, The at least one second radio frequency indicator includes a first type of second radio frequency indicator and a second type of second radio frequency indicator, and the method further includes: Send a third indication message, the third indication message being used to indicate that the priority of the second radio frequency indicator of the first type is priority C, the priority of the second radio frequency indicator of the second type is priority D, and the priority of priority C is higher than the priority of priority D.

29. A communication device, characterized in that, The apparatus includes a transceiver unit and a processing unit, wherein the processing unit is configured to perform the processing operation in the method as described in any one of claims 1-28, and the transceiver unit is configured to perform the transceiver operation in the method as described in any one of claims 1-28.

30. A communication device, characterized in that, The apparatus includes at least one processor, which is configured to invoke a computer program or instructions to perform the method as described in any one of claims 1-28.

31. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a processor, implement the method as described in any one of claims 1-28.

32. A computer program product, characterized in that, The computer program product includes a computer program or instructions that, when run on a processor, implement the method as described in any one of claims 1-28.

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