Communication method and apparatus

Abstract

A communication method and apparatus, relating to the technical field of communications, for use in reducing a peak-to-average ratio under single-carrier transmission, thereby improving transmission performance. A transmitting end modulates user data and a reference signal to obtain a first symbol sequence, wherein the first symbol sequence comprises a first sequence corresponding to the user data and a second sequence corresponding to the reference signal; determining the average transmit power of the user data on the basis of a first parameter, and determining the average transmit power of the reference signal on the basis of a second parameter; and outputting the first symbol sequence. The first parameter is used for indicating a power adjustment coefficient corresponding to the user data, the second parameter is used for indicating a power adjustment coefficient corresponding to the reference signal, and the first parameter and / or the second parameter are preset values, or the relationship between the first parameter and the second parameter is associated with the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first index, wherein the first index represents resource occupancy corresponding to the first sequence and the second sequence.

Description

Communication method and device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] Communication systems include single-carrier and multi-carrier transmission technologies. Orthogonal frequency division multiplexing (OFDM) multi-carrier transmission can suffer from a high peak-to-average ratio (PAPR), which can lead to nonlinear signal distortion. In contrast, single-carrier transmission generally has a lower PAPR.

[0003] For single-carrier transmission, for example, in the frame structure of single-carrier transmission shown in Figure 1, the demodulation reference signal (DMRS) and user data (data) can be transmitted in a single-carrier symbol through time division multiplexing. However, in actual transmission, a modulation sequence with a lower PAPR is usually used for the DMRS part, such as Binary Phase Shift Keying (BPSK) or ZC sequence. And a modulation sequence with a higher PAPR is usually used for the data part, such as Quadrature Amplitude Modulation (QAM), such as 16-QAM or 64-QAM. Therefore, for the entire single-carrier transmission period, the overall PAPR of the transmitted signal is still high. Therefore, how to effectively reduce PAPR under single-carrier transmission is an urgent problem to be solved in this application.

[0004] Summary of the Invention

[0005] Embodiments of the present application provide a communication method and apparatus for reducing PAPR under single-carrier transmission.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, a communication method is provided, which is applied to a transmitting end, and the method includes: modulating user data and a reference signal to obtain a first symbol sequence, wherein the first symbol sequence includes a first sequence corresponding to the user data and a second sequence corresponding to the reference signal; determining the average transmission power of the user data according to a first parameter, and determining the average transmission power of the reference signal according to a second parameter; the first parameter is used to indicate a power adjustment coefficient corresponding to the user data, and the second parameter is used to indicate a power adjustment coefficient corresponding to the reference signal, the first parameter and / or the second parameter is a preset value, or the relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize the resource occupancy corresponding to the first sequence and / or the second sequence; and outputting the first symbol sequence.

[0008] In the above embodiment, the transmission power of the user data and reference signal included in a transmission period is adjusted by configuring the power adjustment coefficient. On the basis of keeping the overall transmission power unchanged, the average transmission power of the reference signal and the average transmission power of the user data can be adjusted to reduce the peak-to-average ratio of the transmission period as a whole and improve the transmission performance.

[0009] In one embodiment, the first parameter and / or the second parameter are preset values, specifically including: the first parameter and / or the second parameter corresponds to the modulation and coding strategy MCS, or; the first parameter and / or the second parameter corresponds to the reference signal generation method, or; the first parameter and / or the second parameter corresponds to the user data modulation method, or; the first parameter and / or the second parameter corresponds to the reference signal generation method and the user data modulation method.

[0010] In the above possible implementations, the convenience and flexibility of power adjustment can be improved by presetting the power adjustment coefficient, such as the value of the first parameter or the second parameter. The preset value of the first parameter or the second parameter is related to the modulation and coding strategy MCS, the reference signal generation method, or the modulation method of the user data. The transmitter can determine the preset value of the first parameter or the second parameter based on the above related parameters, thereby adjusting the transmit power of the user data and / or reference signal to achieve the purpose of reducing the peak-to-average ratio.

[0011] In one embodiment, the first parameter is a preset value, specifically including: the preset value of the first parameter is 1, 0.9, 0.85, 0.82, 0.8, 0.77, 0.75, 0.5, 0.48, or 0.45. Thus, the receiving end and the transmitting end can each determine a power adjustment coefficient for user data based on the configured preset value of the first parameter. Furthermore, optionally, the power adjustment coefficient for the reference signal can also be determined based on a correlation between the first parameter and the second parameter, or based on the preset value corresponding to the second parameter. This can achieve the purpose of reducing the peak-to-average ratio, and this solution is relatively simple and flexible to implement.

[0012] In one embodiment, the first indicator includes at least one of the following information: data-reference signal resource ratio, reference signal resource overhead, and data transmission efficiency, wherein the data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

[0013] In the above possible implementation manners, the power adjustment coefficient such as the first parameter or the second parameter can also be determined by the correlation relationship between the first parameter and the second parameter, wherein the power adjustment coefficient is associated with the first indicator, that is, the value of the first parameter and / or the second parameter can be determined by the data reference signal resource ratio, the resource overhead of the reference signal or the data transmission efficiency, thereby improving the convenience and flexibility of implementing power adjustment, so that the benefit after power adjustment can achieve the expected effect.

[0014] In one embodiment, the relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and A and B are both positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β=1+(1-α)*(1 / S-1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

[0015] In the above possible implementation manner, based on the principle that the overall transmission power remains unchanged before and after the power adjustment, the relationship satisfied by the first parameter and the second parameter can be obtained, so that in actual application, a power adjustment coefficient can be determined by presetting / predefining a parameter value and then calculating other parameter values ​​according to the above formula, thereby improving the convenience and flexibility of power adjustment and enabling the benefits after power adjustment to achieve the expected effect.

[0016] In one embodiment, if the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

[0017] In the above possible implementation manners, the implementation scheme of the present application is applied to a multi-user scenario, and the correlation relationship between multiple power adjustment parameters can be obtained. Then, the specific value of the power adjustment parameter can be set based on this to achieve the effect of reducing the peak-to-average ratio and improving transmission performance.

[0018] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, then the method also includes: determining α1 and α2, wherein if the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2; and determining the second parameter β based on α1 and α2.

[0019] In the above possible implementation manner, the implementation scheme of the present application is applied to a multi-user scenario, and the corresponding power adjustment coefficient can be configured based on the modulation order of the user data. For example, the power adjustment coefficient corresponding to user data with a higher modulation order is smaller, that is, the higher the degree of reduction in the transmission power, the more significant the effect of reducing the overall transmission peak-to-average ratio, thereby improving the transmission performance of the system.

[0020] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, then the method also includes: determining α1 and α2, wherein if the modulation and coding strategy MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2; and determining the second parameter β based on α1 and α2.

[0021] In the above possible implementation manner, the implementation scheme of the present application is applied to a multi-user scenario, and the corresponding power adjustment coefficient can be configured based on the modulation and coding strategy MCS index value of the user data. For example, the power adjustment coefficient corresponding to user data with a higher MCS index value is smaller, that is, the higher the degree of reduction in the transmission power, the more significant the effect of reducing the overall transmission peak-to-average ratio, thereby improving the transmission performance of the system.

[0022] In one embodiment, the first parameter and the second parameter satisfy: the ratio of the maximum transmit power to the average transmit power of the first symbol sequence is less than or equal to the first threshold; and / or the maximum amplitude value of the transmitted first symbol sequence is less than or equal to the second threshold.

[0023] In the above possible implementation manner, the determined power adjustment coefficient needs to meet the relevant conditions of the peak-to-average ratio, that is, after the first symbol sequence is power adjusted, the corresponding peak-to-average ratio or amplitude peak does not exceed the above preset threshold; if the above conditions are not met, the transmitting end can reset the power adjustment coefficient to reduce the peak-to-average ratio of the overall transmission signal and improve the transmission performance.

[0024] In one embodiment, the method further includes: sending at least one of the following information: a parameter index value, a first parameter, a second parameter, or an association relationship between the first parameter and the second parameter, wherein the parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter.

[0025] In the above possible implementations, the transmitting end can send the determined power adjustment coefficient value, or the related parameter index, or the parameter determination method to the receiving end, so that the receiving end determines the corresponding power adjustment coefficient, and then can perform channel estimation and data demodulation to improve transmission efficiency.

[0026] In one embodiment, the method further includes: adjusting the first modulation and coding strategy MCS index value to a second MCS index value according to the first parameter and the second parameter, wherein the modulation order corresponding to the first MCS index value and the second MCS index value is the same.

[0027] In the above possible implementation manner, after the power adjustment coefficient is determined, the MCS index value can be adjusted according to the power adjustment benefit, for example, relevant parameters such as the target transmission bit rate can be adjusted to further improve the transmission performance.

[0028] In a second aspect, a communication method is provided, which is applied to a receiving end, and the method includes: receiving first information, the first information including at least one of the following information: a parameter index value, a first parameter, a second parameter, or an association relationship between the first parameter and the second parameter; wherein the first parameter is used to indicate a power adjustment coefficient corresponding to user data, the second parameter is used to indicate a power adjustment coefficient corresponding to a reference signal, and the parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter; receiving second information, the second information including a first symbol sequence, the first symbol sequence including a first sequence corresponding to the user data and a second sequence corresponding to the reference signal; and demodulating the first symbol sequence according to the first information.

[0029] In one embodiment, the first parameter and / or the second parameter corresponds to the modulation and coding strategy MCS, or; the first parameter and / or the second parameter corresponds to the generation method of the reference signal, or; the first parameter and / or the second parameter corresponds to the modulation method of the user data, or; the first parameter and / or the second parameter corresponds to the generation method of the reference signal and the modulation method of the user data.

[0030] In one embodiment, the association relationship between the first parameter and the second parameter includes: the relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize the resource occupancy corresponding to the first sequence and / or the second sequence.

[0031] In one embodiment, the first indicator includes at least one of the following information: data-reference signal resource ratio, reference signal resource overhead, and data transmission efficiency, wherein the data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

[0032] In one embodiment, the relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and A and B are both positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β=1+(1-α)*(1 / S-1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

[0033] In one embodiment, if the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

[0034] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2.

[0035] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2.

[0036] In a third aspect, a communication device is provided for implementing the above method. The communication device may be the transmitter described in the first aspect, or a device including the above transmission function, or a module in the transmitter described in the first aspect, such as a chip, chip system, or circuit, or a logical node, logic module, or software capable of implementing some or all of the transmitter functions.

[0037] Alternatively, the communication device may be the receiving end in the second aspect described above, or a device including the above-mentioned receiving function, or a module in the receiving end in the second aspect described above, such as a chip, a chip system or a circuit, or a logical node, logical module or software that can implement part or all of the receiving end functions.

[0038] The communication device includes modules, units, or means corresponding to the above-mentioned method, which can be implemented by hardware, software, or hardware executing corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the above-mentioned functions.

[0039] In conjunction with the third aspect above, in one possible implementation, the communication device may include a processing module and a transceiver module. The processing module may be configured to implement the processing functions described in any of the above aspects and any possible implementations thereof. The processing module may, for example, be a processor. The transceiver module, also referred to as a transceiver unit, may be configured to implement the transmitting and / or receiving functions described in any of the above aspects and any possible implementations thereof. The transceiver module may be comprised of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0040] In combination with the third aspect above, in a possible implementation, the transceiver module includes a sending module and a receiving module, which are respectively used to implement the sending and receiving functions in any of the above aspects and any possible implementations thereof.

[0041] In a fourth aspect, a communication device is provided, comprising: a processor; the processor is configured to be coupled to a memory, read instructions from the memory, and then execute the method described in any of the above aspects according to the instructions. The communication device can be the transmitter described in the first aspect and any possible implementation thereof, or a device including the above-mentioned transmission function, or a module in the above-mentioned transmitter, such as a chip, chip system, or circuit, or a logical node, logic module, or software that can implement some or all of the transmitter functions.

[0042] Alternatively, the communication device can be the transmitting end in the above-mentioned second aspect and any possible implementation thereof, or a device including the above-mentioned transmitting function, or a module in the above-mentioned transmitting end, such as a chip, a chip system or a circuit, or a logical node, logical module or software that can realize part or all of the transmitting end functions.

[0043] In combination with the fourth aspect above, in a possible implementation, the communication device further includes a memory, which is used to store necessary program instructions and data.

[0044] In conjunction with the fourth aspect above, in one possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0045] In a fifth aspect, a communication device is provided, comprising: a processor and an interface circuit; the interface circuit is configured to receive a computer program or instruction and transmit it to the processor; and the processor is configured to execute the computer program or instruction, so that the communication device performs the method described in any of the above aspects. The communication device can be the transmitter described in the first aspect and any possible implementation thereof, or a device including the above-mentioned transmission function, or a module in the above-mentioned transmitter, such as a chip, chip system, or circuit, or a logical node, logic module, or software that can implement some or all of the transmitter functions.

[0046] Alternatively, the communication device can be the receiving end in the above-mentioned second aspect and any possible implementation thereof, or a device including the above-mentioned receiving function, or a module in the above-mentioned receiving end, such as a chip, chip system or circuit, or a logical node, logical module or software that can realize part or all of the receiving end functions.

[0047] In conjunction with the fifth aspect above, in one possible implementation, the communication device is a chip or a chip system. Optionally, when the communication device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0048] In a sixth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium. When the computer-readable storage medium is run on a computer, the computer can execute the method described in any one of the above aspects.

[0049] In a seventh aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method described in any one of the above aspects.

[0050] In an eighth aspect, a communication system is provided, which includes a communication device for executing the method described in the above-mentioned first aspect and any possible implementation thereof, and a communication device for executing the method described in the above-mentioned second aspect and any possible implementation thereof.

[0051] Among them, the technical effects brought about by any possible implementation method in the second to eighth aspects can refer to the technical effects brought about by different possible implementation methods in the above-mentioned first aspect, and will not be repeated here.

[0052] It is understandable that, provided that the solutions are not contradictory, the solutions in each aspect can be combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] FIG1 is a schematic diagram of a single-carrier transmission provided in an embodiment of the present application;

[0054] Figures 2 to 5 are schematic diagrams of the structures of several communication systems provided in embodiments of the present application;

[0055] FIG6 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0056] FIG7 is a flow chart of a communication method provided in an embodiment of the present application;

[0057] FIG8 is a schematic diagram of a transmitted data symbol provided by an embodiment of the present application;

[0058] FIG9 is a flow chart of another communication method provided in an embodiment of the present application;

[0059] FIG10 is a schematic diagram of another transmitted data symbol provided in an embodiment of the present application;

[0060] FIG11 is a schematic diagram showing the effect of a communication method provided in an embodiment of the present application;

[0061] FIG12 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0063] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0064] In addition, in this application, directional terms such as "up", "down", "left", "right", "horizontal" and "vertical" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0065] In this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0066] Before introducing the technical solution of this application, the relevant technical terms and processes involved in this application are explained. It is understood that these explanations are intended to make this application easier to understand and should not be regarded as limiting the scope of protection claimed in this application.

[0067] 1. Single-carrier transmission: This refers to a modulation technique that uses only one carrier wave for transmission within a fixed frequency band. Specifically, the transmitter modulates the data stream to be transmitted onto a single carrier wave.

[0068] 2. Multi-carrier transmission: This refers to a modulation technique that uses multiple carriers within a fixed frequency band. Specifically, the transmitter can divide the channel into several orthogonal sub-channels. This involves using multiple carrier signals to convert the data signal to be transmitted into parallel, low-speed sub-data streams, which are then modulated onto each sub-channel for transmission.

[0069] Among them, OFDM technology is a type of multi-carrier modulation, which realizes parallel transmission of data through frequency division multiplexing, has good resistance to multipath fading, and can support multi-user access.

[0070] 3. Peak-to-Average Power Ratio (PAPR): Also known as peak-to-average power ratio, this is the ratio of a signal's peak value to its mean value and is a metric used to describe the amplitude of a signal waveform. A high PAPR indicates high peak power, which increases the system's dynamic range, potentially leading to significant nonlinear distortion and loss of power amplifier efficiency.

[0071] 4. DMRS: This is used by the receiving end to estimate the equivalent channel matrix experienced by a data channel (such as the physical downlink shared channel or physical uplink shared channel) or a control channel (such as the physical downlink control channel), thereby enabling data detection and demodulation. Taking the physical downlink shared channel (PDSCH) as an example, if DMRS uses the same precoding matrix as PDSCH, this ensures that DMRS and PDSCH experience the same equivalent channel. When a network device receives DMRS and PDSCH, it can perform equivalent channel estimation based on the DMRS and demodulate the data carried by the PDSCH.

[0072] 5. Cyclic Prefix (CP): This is formed by copying the signal at the end of an OFDM symbol to the beginning of the symbol. It can be used to eliminate inter-symbol interference. Specifically, for a signal (or sequence) S of length N, for example, S = [s_1, s_2, …, s_N], the last L elements of sequence S (L refers to the length of the CP) are truncated, that is, the sequence [s_N-L, s_N-L+1, …, s_N], and this truncated L-length sequence is appended to the original sequence S. The sequence after adding the CP is: S_CP = [s_N-L, s_N-L+1, …, s_N, s_1, s_2, …, S_N].

[0073] Next, the implementation scenarios of the embodiments of the present application are described with reference to the accompanying drawings.

[0074] The methods provided in the embodiments of the present application can be applied to various communication systems, including but not limited to: non-terrestrial network (NTN) communication systems, 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), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), 5G mobile communication systems, and three major application scenarios of next-generation mobile communication systems such as 6G, namely enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and enhanced machine-type communications (EMTC). Communication, eMTC) etc.

[0075] The following describes the communication scenarios of the embodiments of the present application by taking the communication systems shown in Figures 2 to 5 as an example.

[0076] As shown in Figure 2, a schematic diagram of the architecture of a communication system provided in an embodiment of the present application is provided. In Figure 2, the communication system may include at least one network device and / or at least one terminal device. For example, the communication system may include network device 101 and network device 102, or the communication system may include network device 101 and terminal device 103, or the communication system may include terminal device 104 and terminal device 105.

[0077] In Figure 2 , the network device can provide wireless access services for the terminal device. Specifically, each network device corresponds to a service coverage area. Terminal devices that enter this area can communicate with the network device through the Uu port to receive the wireless access services provided by the network device. The terminal device and the network device can communicate through the Uu port link. The Uu port link can be divided into uplink (UL) and downlink (DL) according to the direction of the uplink data transmitted. The UL can transmit data sent from the terminal device to the network device, and the DL can transmit data transmitted from the network device to the terminal device. For example, in Figure 2 , the terminal device 103 is located in the coverage area of ​​the network device 101. The network device 101 can send data to the terminal device 103 via the DL, and the terminal device 103 can send data to the network device 101 via the UL.

[0078] Terminal devices can communicate with other terminal devices via direct communication links. A direct communication link can be referred to as a side link or sidelink (SL). For example, if the direct communication link is a sidelink, terminal devices 103 and 104 in FIG2 can communicate via the sidelink, and terminal devices 104 and 105 in FIG2 can communicate via the sidelink.

[0079] The network devices in Figure 2, such as network device 101 or network device 102, can be transmission reception points (TRPs), base stations, relay stations, or access points. Network devices 101 or 102 can be network devices in a 5G communication system or a network device in a future evolution network. They can also be base transceiver stations (BTSs) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, NBs (NodeBs) in wideband code division multiple access (WCDMA), or eNBs or eNodeBs (evolutionary NodeBs) in long term evolution (LTE). Network devices 101 or 102 can also be wireless controllers in a cloud radio access network (CRAN) scenario.

[0080] The terminal devices in FIG2 , such as terminal device 103 , terminal device 104 , or terminal device 105 , may be devices that include wireless transceiver functionality and can provide communication services to users. Specifically, terminal device 103 , terminal device 104 , or terminal device 105 may be devices in a V2X system, a D2D system, a machine type communication (MTC) system, or the like. For example, terminal device 103 , terminal device 104 , terminal device 105 , or terminal device 106 may refer to an industrial robot, industrial automation equipment, user equipment (UE), an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless terminal device, a user agent, or a user device. For example, terminal device 103, terminal device 104, terminal device 105 or terminal device 106 can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a network after 5G or a terminal device in a future evolution network, and this application does not limit this. The terminal device of this application can also be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit that is built into a vehicle as one or more components or units, and the vehicle can implement the method of this application through the built-in vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit.

[0081] In one embodiment, the network device may be an aerial network device in an NTN communication system, or may refer to a non-ground base station or non-ground device, such as a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, etc. The method provided in the embodiment of the present application can be applied to a communication system as shown in FIG3 , which may include an aerial network device, such as a satellite; the communication system may also include at least one terminal device, such as the terminal device shown in FIG3 .

[0082] Satellites can operate in either transparent transmission mode or regeneration mode. In transparent transmission mode, they act as relays, forwarding signals from network devices or terminals, enhancing terrestrial network coverage. Satellites can filter, convert, and amplify wireless frequencies, enabling transparent forwarding between terminal devices and base stations via the transparent transmission satellite.

[0083] When the satellite operates in regeneration mode, it has signal processing capabilities; it can be understood that the satellite has the processing function of a base station and can send signals to other network devices or terminal devices, thereby providing communication services to the terminal devices.

[0084] In addition, the method provided in the embodiment of the present application can be applied to an inter-satellite link (ISL) communication system between satellites as shown in Figure 4. The communication system may include satellite 1 and satellite 2, and satellite 1 and satellite 2 communicate via the ISL. The satellite includes two parts: an acquisition, pointing and tracking (APT) subsystem and a communication subsystem, as shown in Figure 4.

[0085] The communications subsystem is responsible for transmitting intersatellite information and is the core of the intersatellite communication system. The APT subsystem is responsible for acquisition, alignment, and tracking between satellites. Acquisition is used to determine the incoming signal's direction, alignment is used to adjust the transmitted wave's aiming direction, and tracking is used to continuously adjust alignment and acquisition throughout the communication process. To minimize the effects of attenuation and interference in the channel and maintain high confidentiality and transmission rates, the APT can be adjusted in real time to continuously adapt to changes. Existing APT and communication subsystems are independent systems. The APT subsystem can be an optical system, which is difficult to align and requires mechanical pointing adjustment. The communication subsystem can be an optical communication system, and some microwave band systems also use a single high-gain antenna.

[0086] In addition, the method provided in the embodiment of the present application can also be applied to wireless communication systems such as wireless local area network communication. As shown in Figure 5, the communication system may include an access point serving multiple terminal devices, and a terminal device communicating with multiple access points.

[0087] It should be noted that the communication systems shown in Figures 2-5 are for illustrative purposes only and are not intended to limit the technical solutions of this application. Those skilled in the art will appreciate that, in a specific implementation, the communication system may also include other devices, and the number of network devices and terminal devices may be determined based on specific needs. Furthermore, the network elements shown in the figures may also be connected via other interfaces, without limitation.

[0088] Optionally, each network element in the diagram of the embodiment of the present application, such as a network device or a terminal device, may be a functional module within a device. It is understood that the functional module may be a component in a hardware device, such as a communication chip or communication component in a terminal device or a network device, or a software functional module running on the hardware, or a virtualized function instantiated on a platform (e.g., a cloud platform).

[0089] For example, each network element in Figures 2-5 can be implemented by the communication device 600 in Figure 6. Figure 6 shows a schematic diagram of the hardware structure of a communication device applicable to embodiments of the present application. The communication device 600 may include at least one processor 601, a communication line 602, a memory 603, and at least one communication interface 604.

[0090] The processor 601 can be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present application.

[0091] The communication link 602 may include a path for transmitting information between the above components, such as a bus.

[0092] The communication interface 604 uses any transceiver-like device for communicating with other devices or communication networks, such as an Ethernet interface, a radio access network (RAN) interface, a wireless local area network (WLAN) interface, etc.

[0093] The memory 603 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory can be independent and connected to the processor via a communication line 602. The memory can also be integrated with the processor. The memory provided in the embodiment of the present application can generally have non-volatility. Among them, the memory 603 is used to store the computer execution instructions involved in executing the solution of the present application, and is controlled by the processor 601 to execute. The processor 601 is used to execute the computer-executable instructions stored in the memory 603, thereby implementing the method provided in the embodiment of the present application.

[0094] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code, which is not specifically limited in the embodiments of the present application.

[0095] In a specific implementation, as an embodiment, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2 .

[0096] In a specific implementation, as an embodiment, the communication device 600 may include multiple processors, such as the processor 601 and the processor 607 in FIG6 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0097] In a specific implementation, as an embodiment, the communication device 600 may further include an output device 605 and an input device 606. The output device 605 communicates with the processor 601 and can display information in a variety of ways. For example, the output device 605 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 606 communicates with the processor 601 and can receive user input in a variety of ways. For example, the input device 606 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0098] In a specific implementation, the communication device 600 can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a device with a similar structure as shown in Figure 6. The embodiment of the present application does not limit the type of the communication device 600.

[0099] The present application provides a communication method, which configures corresponding power adjustment coefficients for the transmission power of reference signals and user data respectively, so as to adjust the transmission power of reference signals and user data. For example, the transmission power of user data can be appropriately reduced by configuring the power adjustment coefficient, and the transmission power of reference signals can be appropriately increased by configuring the power adjustment coefficient, so that the overall PAPR of the transmission signal can be reduced. Exemplarily, based on the premise that the overall transmission power remains unchanged, the transmitting end can set the average transmission power of user data and the average transmission power of the reference signal according to the configured power adjustment coefficient, so that the overall PAPR of the transmission signal is significantly reduced compared to before the power allocation adjustment, thereby achieving benefits.

[0100] As shown in Figure 7 , the communication method is applied to a first device and a second device, wherein the first device serves as a signal transmitter and the second device serves as a receiver. The first device and the second device may specifically be network elements in the communication system shown in Figures 2 to 5 , but this application does not limit this. As shown in Figure 7 , the method may include the following steps.

[0101] 701: A first device modulates user data and a reference signal to obtain a first symbol sequence.

[0102] The first symbol sequence includes a first sequence corresponding to user data and a second sequence corresponding to a reference signal.

[0103] Specifically, the first device may modulate the user data and the reference signal separately. For example, the first device may code-modulate the user data based on the modulation scheme of the user data to obtain a symbol sequence corresponding to the user data, namely the first sequence. For example, the first device may modulate the user data using a modulation scheme such as 16-QAM or 64-QAM, which is not specifically limited in this application.

[0104] Correspondingly, the first device may modulate the reference signal based on the reference signal generation method to obtain a symbol sequence corresponding to the reference signal, namely the second sequence. For example, the first device may modulate the reference signal using a modulation method such as BPSK or a ZC sequence, which is not specifically limited in this application.

[0105] 702: The first device determines the average transmit power of the user data according to the first parameter, and determines the average transmit power of the reference signal according to the second parameter.

[0106] The first parameter is used to indicate the power adjustment coefficient corresponding to the user data, and the second parameter is used to indicate the power adjustment coefficient corresponding to the reference signal. That is, the first parameter and the second parameter in this application are used by the transmitter to adjust the power of the user data and the reference signal in the transmission signal, respectively. In an embodiment of this application, the first device can adjust the average transmit power of the user data according to the first parameter, such as by reducing or increasing the average transmit power of the user data using the first parameter. Correspondingly, the first device can adjust the average transmit power of the reference signal according to the second parameter, such as by reducing or increasing the average transmit power of the user data using the second parameter.

[0107] It should be noted that in some transmission scenarios, the PAPR of the user data portion within a transmission cycle is higher than the PAPR of the reference signal portion. To reduce the PAPR of the entire transmission cycle, the first device can typically reduce the transmit power of the user data using the first parameter and the second parameter, such as when the first parameter is less than or equal to 1; and increase the transmit power of the reference signal, such as when the second parameter is greater than or equal to 1. However, it is not excluded that in specific scenarios, the first device can increase the transmit power of the user data, reduce the transmit power of the reference signal, or make other adjustments using the first parameter and the second parameter. This application does not specifically limit this.

[0108] In addition, it should be noted that the type of reference signal is not specifically limited in the embodiments of the present application. For example, the reference signal may be a DMRS, and the following embodiments only take the reference signal as a DMRS as an example.

[0109] In one embodiment, the first parameter may be a preset value, or the second parameter may be a preset value, or both the first parameter and the second parameter may be preset values.

[0110] For example, in a certain transmission scenario, if the preset value of the first parameter is 0.8, the preset value of the second parameter is 1.8, the symbol sequence after the user data is modulated is X, and the symbol sequence after the reference signal such as DMRS is modulated is Y, then the first device can determine that the final transmission sequence of the user data can be based on the values ​​of the first parameter and the second parameter. Similarly, the final transmission sequence of DMRS can be determined as In another example, if the preset value of the first parameter is 1, it means that the average transmit power of the user data is not adjusted, that is, the original transmit power is used; if the preset value of β is 1, it means that the average transmit power of the reference signal is not adjusted.

[0111] In one possible implementation, the first device may be configured with one or more first parameters and / or second parameters. If multiple sets of parameters are configured, the configuration may be performed in the form of an index table (or referred to as a configuration table), such as the various tables described below. When the first device transmits a signal, it may determine the specific values ​​of the first parameters and / or second parameters from the index table based on a higher-level instruction or autonomous selection.

[0112] In one possible implementation, the first parameter and / or the second parameter are preset values, which may specifically include: the values ​​of the first parameter and / or the second parameter correspond to a modulation and coding scheme (MCS). For example, in an MCS index value implementation, each MCS index value corresponds to a modulation scheme and parameters such as a physical transmission rate. In addition, in an embodiment of the present application, each MCS index value may also correspond to a first parameter, a second parameter, or a group of parameters and a second parameter.

[0113] In addition, in one possible implementation, the first parameter and / or the second parameter are preset values. Specifically, the first parameter and / or the second parameter may correspond to a reference signal generation method. In other words, for different reference signal generation methods, at least one corresponding set of first parameters and / or second parameters may be configured. An example is shown in Table 1 below.

[0114] Table 1. Configuration of power adjustment coefficient

[0115] It should be noted that in the example of Table 1 above, the modulation method of the user data under this transmission mode is not specifically limited. For example, the modulation method of the user data can be Quadrature Phase Shift Keying (QPSK). For other modulation methods of the user data, different configuration tables of power adjustment coefficients may correspond, which are not described in detail in this application.

[0116] In one possible implementation, the first parameter and / or the second parameter are preset values. Specifically, the first parameter and / or the second parameter may correspond to a modulation scheme of the user data. That is, for different modulation schemes of the user data, at least one corresponding set of first parameters and / or second parameters may be configured. An example is shown in Table 2 below.

[0117] Table 2. Configuration of power adjustment coefficient

[0118] In the example of Table 2 above, there is no specific limitation on the reference signal generation method for this transmission mode. For example, the reference signal generation method may be a ZC sequence. For example, if the reference signal generation method is an M sequence, then different power adjustment coefficient configuration tables may correspond to it, as shown in Table 3 below. For example, if the reference signal generation method is Pi / 2 BPSK, then the corresponding power adjustment coefficient configuration table may be shown in Table 4 below.

[0119] Table 3. Configuration of power adjustment coefficient

[0120] Table 4. Configuration of power adjustment coefficient

[0121] In addition, in one possible implementation, the first parameter and / or the second parameter are preset values. Specifically, the first parameter and / or the second parameter may correspond to a reference signal generation method and a user data modulation method. That is, for different reference signal generation methods and user data modulation methods, at least one corresponding set of first parameters and / or second parameters may be configured. An example is shown in Table 5 below.

[0122] Table 5. Configuration of power adjustment coefficient

[0123] Alternatively, in another embodiment, the relationship between the first parameter and the second parameter can be determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator. The first indicator is used to characterize the resource occupancy corresponding to the first sequence, the resource occupancy corresponding to the second sequence, or the resource occupancy corresponding to the first sequence and the second sequence respectively. In other words, the first device can determine the specific value of the parameter based on the association relationship between the first parameter and the second parameter. For example, the first device can first determine the specific value of the first parameter, and then determine the specific value of the second parameter based on the association relationship between the first parameter and the second parameter.

[0124] For example, as shown in FIG8 , after the first device modulates the user data and the reference signal, the symbol sequence obtained is a first symbol sequence, wherein the symbol sequence corresponding to the user data in the first symbol sequence is the first sequence, and the number of resource elements (REs) occupied by the first sequence can be represented by A; the symbol sequence corresponding to the reference signal in the first symbol sequence can be a second sequence, and the number of REs occupied by the second sequence can be represented by B.

[0125] Based on this example, it can be obtained that the overall transmission power of the symbol sequence before power adjustment can be expressed by (A+B)*P, where P is the average transmission power corresponding to each RE. For ease of calculation, the embodiment of the present application ignores the difference in transmission power on different REs, that is, it is assumed that each RE corresponds to the same average transmission power P. Then, after the first device performs power adjustment based on the first parameter α and the second parameter β, the overall transmission power can be expressed by (α*A+β*B)*P. Based on the fact that the overall transmission power of the transmitted signal remains unchanged, that is, (α*A+β*B)*P=(A+B)*P, it is equivalent to: α*A+β*B=A+B.

[0126] From this, we can get that the correlation between the first parameter α and the second parameter β can be: α*A+β*B=A+B, and the value of β can be obtained from the above formula, that is,

[0127] That is, the first device can calculate the value of the second parameter β based on the value of the first parameter α and the association between the first parameter α and the second parameter β. Specifically, the first device can obtain the value of the second parameter based on the number A of resource elements corresponding to the first sequence, the number B of resource elements corresponding to the second sequence, and the value of the first parameter. Alternatively, the first device can obtain the value of the second parameter based on the ratio of the number A of resource elements corresponding to the first sequence to the number B of resource elements corresponding to the second sequence, i.e., the data-reference signal resource ratio, and the value of the first parameter.

[0128] Exemplarily, the first device determines that the first parameter α is 0.8, A / B=3, and the second parameter β can be calculated as 1.6 according to the above formula.

[0129] In one embodiment, the first indicator may include at least one of the following information: data-reference signal resource ratio, reference signal resource overhead, and data transmission efficiency. The data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence. The reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence. The data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence. For example, as shown in Figure 8, the data-reference signal resource P = A / B, the reference signal resource overhead S = B / (A+B), and the data transmission efficiency J = A / (A+B).

[0130] Optionally, the association relationship satisfied by the first parameter α and the second parameter β may also be: β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B.

[0131] Alternatively, the association relationship satisfied by the first parameter α and the second parameter β may also be: β=1+(1-α)*(1 / S-1), where S represents the reference signal overhead.

[0132] Alternatively, the association relationship satisfied by the first parameter α and the second parameter β may also be: β=1+(1-α)*J / (1-J), where J represents the data transmission rate.

[0133] That is, the first device can determine the value of α or β according to the correlation between the above parameters. In the embodiment of the present application, the method for determining the first parameter and the second parameter is not specifically limited.

[0134] For example, if P=4:1=4, the power adjustment coefficients of user data and reference signals may be different for different reference signal sequences or different user data modulation schemes. For example, the first parameter and the second parameter may be configured as values ​​shown in Table 1 below.

[0135] Table 6. Reference signal-ZC sequence

[0136] Table 7. Reference signal-M sequence

[0137] Table 8. Reference signal - Pi / 2BPSK

[0138] In a possible implementation manner, the first devices may all be configured with a power adjustment coefficient configuration as shown in Table 9 below.

[0139] Table 9. Configuration of power adjustment coefficient

[0140] It should be noted that the configuration tables of the above-mentioned power adjustment coefficients in the embodiments of the present application are shown as possible examples. The elements included in the configuration tables may be more or less than those in the above-mentioned examples, and the specific values ​​of the first parameter or the second parameter may not be limited to the above-mentioned examples. This application will not elaborate on this.

[0141] In one embodiment, the power adjustment of transmitted data in this application is intended to reduce the PAPR. Therefore, it is possible to further determine whether the adjusted transmit power has achieved the effect of reducing the PAPR. Therefore, the first parameter and the second parameter must satisfy the following condition: the ratio of the maximum transmit power to the average transmit power of the first symbol sequence is less than or equal to a first threshold. The ratio of the maximum transmit power to the average transmit power is the peak-to-average ratio.

[0142] Alternatively, optionally, the first parameter and the second parameter need to satisfy the following condition: the maximum amplitude value of the transmitted first symbol sequence is less than or equal to the second threshold value. Alternatively, the first parameter and the second parameter satisfy both of the above conditions.

[0143] The first threshold or the second threshold may be a preset PAPR-related threshold, used to characterize a threshold value of PAPR performance, such as the first threshold is a maximum PAPR threshold, and the second threshold is a maximum amplitude threshold.

[0144] 703: The first device outputs a first symbol sequence.

[0145] In an actual transmission system, the first device determines the average transmit power of user data based on the first parameter and the average transmit power of the reference signal based on the second parameter, and then outputs a first symbol sequence. The first device can then perform resource mapping on the first symbol sequence and send it to the second device.

[0146] In the above-mentioned embodiment of the present application, the transmission power of the user data and reference signal included in a transmission period is adjusted by configuring the power adjustment coefficient. On the basis of the overall transmission power remaining unchanged, the transmission power of the reference signal can be increased and the transmission power of the user data can be reduced, thereby reducing the overall PAPR of the transmission period and improving the transmission performance.

[0147] Furthermore, in the above possible implementation manner, the determined power adjustment coefficient needs to meet the relevant conditions of the peak-to-average ratio, that is, after the first symbol sequence is power adjusted, the corresponding peak-to-average ratio or amplitude value does not exceed the above preset thresholds (first threshold, second threshold); if the above conditions are not met, the first device can reset the power adjustment coefficient to reduce the peak-to-average ratio of the overall transmission signal and improve the transmission performance.

[0148] In one embodiment, the above transmission method can also be applied to a multi-user data scenario, that is, the user data includes user data corresponding to two or more users. The following describes the embodiment of the present application using the example of the first symbol sequence including user data corresponding to two users.

[0149] If the user data includes data corresponding to a first user and data corresponding to a second user, the first parameter includes α1 and α2, where α1 is used to represent the power adjustment coefficient corresponding to the user data of the first user, and α2 is used to represent the power adjustment coefficient corresponding to the user data of the second user.

[0150] For example, as shown in FIG10 , the first symbol sequence includes a first sequence and a second sequence, where the first sequence includes user data of a first user and user data of a second user. Where A1 represents the number of REs occupied by the symbol sequence corresponding to the user data of the first user in the first sequence, A2 represents the number of REs occupied by the symbol sequence corresponding to the user data of the second user in the first sequence, and B represents the number of REs occupied by the second sequence. Then, α1, α2, and the second parameter β satisfy the following condition: α1*A1+α2*A2+β*B=A1+A2+B.

[0151] Thus, it can be obtained that the second parameter β satisfies: β=(1-α1)*A1 / B+(1-α2)*A2 / B+1.

[0152] For a multi-user data transmission scenario, the first device may first determine α1 and α2 in the first parameters, and then determine the value of the second parameter β using the above formula according to the values ​​of α1 and α2.

[0153] In the above possible implementation manners, the implementation scheme of the present application is applied to a multi-user scenario, and the correlation relationship between multiple power adjustment parameters can be obtained. Then, the specific value of the power adjustment parameter can be set based on this to achieve the effect of reducing the peak-to-average ratio and improving transmission performance.

[0154] Optionally, in one embodiment, if the modulation order of the user data corresponding to the first user is higher than the modulation order of the user data corresponding to the second user, the first device may first determine α1 and then determine α2. In other words, the first device may prioritize the user data with higher modulation orders and first adjust the transmit power of the higher modulation order user data, then adjust the transmit power of the user data with lower modulation orders, and finally adjust the transmit power of the reference signal based on the overall transmit power.

[0155] For example, the modulation mode of UE1 is 8-QAM, and the modulation order is 8; the modulation mode of UE2 is QPSK, and the modulation order is 4, then the modulation order of UE1 is higher than that of UE2. Therefore, the first device can first adjust the power allocation factor α1 of the user data corresponding to UE1, and then adjust the power allocation factor α2 of the user data corresponding to UE2, and then calculate β based on the values ​​of α1 and α2 to adjust the transmission power of the reference signal.

[0156] Optionally, the power adjustment coefficient corresponding to user data with a higher modulation order may be less than or equal to the power adjustment coefficient corresponding to user data with a lower modulation order, such as α1≤α2 in the aforementioned example.

[0157] In the above possible implementation manner, the implementation scheme of the present application is applied to a multi-user scenario, and the corresponding power adjustment coefficient can be configured based on the modulation order of the user data. For example, the power adjustment coefficient corresponding to user data with a higher modulation order is smaller, that is, the higher the degree of reduction in the transmission power, the more significant the effect of reducing the overall transmission peak-to-average ratio, thereby improving the transmission performance of the system.

[0158] In another embodiment, if the MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, the first device may first determine α1 and then determine α2. For example, a higher MCS index value generally corresponds to a higher transmission code rate. In other words, the first device may prioritize the user data with a higher MCS index value, first adjust the transmit power of the user data with a higher MCS index value, then adjust the transmit power of the user data with a lower MCS index value, and finally adjust the transmit power of the reference signal based on the overall transmit power.

[0159] Further optionally, the power adjustment coefficient corresponding to user data with a higher MCS index value may be less than or equal to the power adjustment coefficient corresponding to user data with a lower MCS index value, such as α1≤α2 in the aforementioned example.

[0160] In the above possible implementation manner, the implementation scheme of the present application is applied to a multi-user scenario, and the corresponding power adjustment coefficient can be configured based on the MCS index value of the user data. For example, the power adjustment coefficient corresponding to user data with a higher MCS index value is smaller, that is, the higher the degree of reduction in the transmission power, the more significant the effect of reducing the overall transmission peak-to-average ratio, thereby improving the transmission performance of the system.

[0161] It should be noted that, in the embodiment of the present application, there is no limitation on the number of users included in the user data portion of the first symbol sequence. The number of users corresponds to the number of parameters included in the first parameter. For example, in the aforementioned embodiment, the first symbol sequence includes the symbol sequences corresponding to the user data of the first user and the second user, that is, the first parameters α1 and α2 can be used to adjust the average transmission power of the symbol sequences corresponding to the user data of the first user and the second user, respectively. Similarly, if the first symbol sequence includes the symbol sequences corresponding to the user data of three users, the first parameters α1, α2, and α3 can be used to adjust the average transmission power of the symbol sequences corresponding to the user data of the three users, respectively. Among them, α1 and α2 can be equal or unequal, and α1, α2, and α3 can be equal or unequal. The embodiment of the present application does not specifically limit this.

[0162] Correspondingly, since the value of the second parameter is related to the channel estimation response of the reference signal, and the first parameter is related to the demodulation and decoding of the user data, the receiving end also needs to determine the values ​​of the first parameter and the second parameter, or determine the values ​​of the first parameter and the second parameter based on the correlation between the first parameter and the second parameter. The following briefly describes the execution process of the receiving end.

[0163] An embodiment of the present application also provides a communication method, as shown in FIG9 , including the following steps.

[0164] 901: The second device receives the first information.

[0165] The first information may include at least one of the following: a parameter index value, a first parameter, a second parameter, or an association between the first parameter and the second parameter. The parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter. As shown in Table 9 above, one parameter index value is used to indicate a row of parameters in Table 9. That is, the second device receives the first information to determine the first parameter and the second parameter, i.e., to determine the power adjustment coefficients of the transmitting end for user data and reference signals, respectively.

[0166] In one embodiment, the first device or other network element may send first information to the second device, thereby configuring the first parameter, or the second parameter, or the first parameter and the second parameter specified for the current data transmission for the second device.

[0167] Alternatively, the first device or other network element can pre-configure the power adjustment coefficient configuration table exemplified in Tables 1-9 for the second device, and then indicate the parameter index value to the second device through the first information, so that the second device can determine the corresponding first parameter and second parameter according to the parameter index value.

[0168] Alternatively, the first device or other network element may pre-configure the association between the first parameter and the second parameter for the second device, such as configuring the formula in the aforementioned example, and then indicate the first parameter to the second device via the first information, so that the second device can calculate the second parameter based on the first parameter and the configured formula. Conversely, the second parameter may also be indicated to the second device via the first information, and the second device may calculate the first parameter based on the second parameter and the configured formula. This application does not specifically limit this.

[0169] 902: A second device receives second information, where the second information includes a first symbol sequence.

[0170] Specifically, in combination with the embodiment shown in FIG. 7 , the first device may send second information to the second device, where the second information includes a first symbol sequence.

[0171] As mentioned above, the first symbol sequence includes a first sequence corresponding to user data and a second sequence corresponding to a reference signal.

[0172] 903: The second device demodulates the first symbol sequence according to the first information.

[0173] The second device may perform channel estimation based on the symbol sequence of the reference signal in the first symbol sequence.

[0174] Specifically, the second device can perform channel estimation based on the second parameter, obtain channel information of the user data part from the channel estimation information, and then complete the symbol sequence detection corresponding to the user data based on the channel estimation result and the first parameter, and demodulate to obtain the user data.

[0175] Specifically, channel estimation may be performed on the reference signal according to the following channel transmission relationship.

[0176] Taking DMRS as an example, Among them, y DMRS The matrix representing the received reference signal, x DMRS represents the transmitted reference signal matrix, and H represents the channel estimation matrix.

[0177] For channel equalization, Among them, x' Data The matrix representing the received user data, x Data represents the matrix of transmitted user data, and n represents the channel noise.

[0178] As can be seen from the above, after the transmitter adjusts the average transmit power, the mean square error (MSE) of the channel estimation is reduced by a factor of β. However, due to channel equalization, the user data itself undergoes an α-fold adjustment, and after channel equalization, the noise is amplified by a factor of 1 / α. Therefore, for the entire transmission link, the benefit of signal power adjustment can be expressed as (β - 1 / α).

[0179] In addition, in the above embodiment, after the transmitting end determines the power adjustment coefficient, the MCS index value can be adjusted according to the power adjustment benefit, for example, relevant parameters such as the target transmission code rate can be adjusted to further improve the transmission performance.

[0180] In a possible implementation, the first device may adjust the first MCS index value to the second MCS index value according to the first parameter and the second parameter, wherein the modulation order corresponding to the first MCS index value and the second MCS index value is the same.

[0181] Specifically, for example, if (β-1 / α)>0, it can be considered that the signal power adjustment is beneficial and the transmission performance of the communication system is improved.

[0182] In one embodiment, if (β-1 / α)>0, it is considered that the transmission performance deteriorates after the signal power adjustment, and the first device can reconfigure the values ​​of the first parameter and the second parameter to adjust the transmission power of the user data and the reference signal.

[0183] Optionally, if (β-1 / α)>0; or, for a multi-user transmission scenario, (β-1 / α1-1 / α2)>0, the first device may increase the MCS index value, for example, modulate the first MCS index value to a second MCS index value, wherein the first MCS index value is less than the second MCS index value, and the modulation order corresponding to the first MCS index value and the second MCS index value is the same.

[0184] For example, as shown in Table 10 below, for the same modulation order, the larger the MCS index value, the larger the corresponding transmission code rate. This is equivalent to the transmitter being able to appropriately increase the transmission code rate and improve the overall transmission performance without changing the modulation method.

[0185] Correspondingly, if (β-1 / α) < 0, or (β-1 / α1-1 / α2) < 0, the first device may reduce the MCS index value, for example, modulating the first MCS index value to a second MCS index value, wherein the first MCS index value is greater than the second MCS index value, and the modulation order corresponding to the first MCS index value and the second MCS index value is the same. In other words, the transmitting end can appropriately reduce the transmission code rate to ensure transmission performance without changing the modulation mode.

[0186] Table 10, MCS index table

[0187] For example, if the initial MCS index value originally determined by the first device is 4 and the corresponding modulation order is 2, and after power adjustment, it is calculated that (β-1 / α) is greater than 0, then the first device may increase the MCS index value to 5 or 6. However, to ensure that the modulation order remains unchanged and remains at 2, the adjusted MCS index value cannot be greater than 9. Conversely, if the initial MCS index value originally determined by the first device is 13, and it is determined that (β-1 / α) is less than 0, then the first device may reduce the MCS index value to 11. However, to ensure that the modulation order remains unchanged and remains at 4, the adjusted MCS index value cannot be less than 10.

[0188] In the above implementation, the transmit power of the user data and reference signal included in a transmission period is adjusted by configuring a power adjustment coefficient, such as increasing the transmit power of the reference signal and decreasing the transmit power of the user data, thereby reducing the overall PAPR of the transmission period and improving transmission performance. As shown in Figure 11, it can be seen that when the first parameter α is set to a value such as 1, 0.9, 0.8, 0.7, or 0.6, the corresponding PAPR curve is obtained. After the transmitting end adjusts the transmit power of the user data and reference signal, the PAPR curve shifts to the left, that is, the overall PAPR of the communication system is reduced, and the communication performance is significantly improved.

[0189] The various possible implementation methods mentioned above in this application can be combined if there is no contradiction between the solutions, and this application does not impose any restrictions on this.

[0190] The above description mainly describes the solution provided by this application from the perspective of the interaction between the transmitter and receiver. Accordingly, this application also provides a communication device, which can be the first device in the above-mentioned method embodiment, or a component that can be used in the first device; alternatively, the communication device can be the second device in the above-mentioned method embodiment, or a component that can be used in the second device. It is understood that, in order to implement the above-mentioned functions, the above-mentioned first device or second device, etc., includes hardware structures and / or software modules corresponding to performing each function. Those skilled in the art should readily appreciate that, in combination with the various exemplary units and algorithmic operations described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or in a hardware-driven manner by computer software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0191] It should be understood that the above description only uses the first device and the second device as examples to describe the interaction between various network elements. For example, the first device can be a network device and the second device can be a terminal. In fact, the processing performed by the above terminal is not limited to being performed by only a single network element, and the processing performed by the above network device is not limited to being performed by only a single network element. For example, the processing performed by the network device can be performed by at least one of a centralized unit (CU), a distributed unit (DU), and an RU.

[0192] The present application can divide the functional modules of the first device or the second device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. It is understood that the division of modules in this application is schematic and is only a logical functional division. In actual implementation, other division methods may be used.

[0193] For example, in the case of dividing the functional modules in an integrated manner, FIG12 shows a schematic structural diagram of a communication device 1200. The communication device 1200 includes a processing module 1201 and an interface module 1202.

[0194] Exemplarily, the communication device 1200 may be used to implement the function of the first device in the above embodiment.

[0195] The processing module 1201 is configured to modulate the user data and the reference signal to obtain a first symbol sequence, where the first symbol sequence includes a first sequence corresponding to the user data and a second sequence corresponding to the reference signal.

[0196] The processing module 1201 is further configured to determine an average transmit power of user data based on a first parameter, and to determine an average transmit power of a reference signal based on a second parameter. The first parameter is used to indicate a power adjustment factor corresponding to the user data, and the second parameter is used to indicate a power adjustment factor corresponding to the reference signal. The first parameter and / or the second parameter are preset values, or a relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize resource occupancy corresponding to the first sequence and / or the second sequence.

[0197] The interface module 1202 is configured to output a first symbol sequence.

[0198] In one embodiment, the first parameter and / or the second parameter are preset values, specifically including: the first parameter and / or the second parameter corresponds to the modulation and coding strategy MCS, or; the first parameter and / or the second parameter corresponds to the reference signal generation method, or; the first parameter and / or the second parameter corresponds to the user data modulation method, or; the first parameter and / or the second parameter corresponds to the reference signal generation method and the user data modulation method.

[0199] In one embodiment, the first indicator includes at least one of the following information: a data-to-reference signal resource ratio, a reference signal resource overhead, and data transmission efficiency. The data-to-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

[0200] In one embodiment, the relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and A and B are both positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β=1+(1-α)*(1 / S-1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

[0201] In one embodiment, if the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

[0202] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, then the processing module 1201 is also used to determine α1 and α2, wherein, if the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2; and the second parameter β is determined based on α1 and α2.

[0203] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, then the processing module 1201 is also used to determine α1 and α2, wherein, if the modulation and coding strategy MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2; the second parameter β is determined based on α1 and α2.

[0204] In one embodiment, the first parameter and the second parameter satisfy: a ratio of the maximum transmit power to the average transmit power of the first symbol sequence is less than or equal to a first threshold; and / or a maximum amplitude value of transmitting the first symbol sequence is less than or equal to a second threshold.

[0205] In one embodiment, the interface module 1202 is also used to send at least one of the following information: a parameter index value, the first parameter, the second parameter, or an association relationship between the first parameter and the second parameter, wherein the parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter.

[0206] In one embodiment, the processing module 1201 is further used to adjust the first modulation and coding strategy MCS index value to a second MCS index value according to the first parameter and the second parameter, wherein the modulation order corresponding to the first MCS index value is the same as that of the second MCS index value.

[0207] In addition, the communication device 1200 can also be used to implement the function of the second device in the above embodiment.

[0208] Among them, the interface module 1202 is used to receive first information, and the first information includes at least one of the following information: a parameter index value, a first parameter, a second parameter, or an association relationship between the first parameter and the second parameter; wherein, the first parameter is used to indicate the power adjustment coefficient corresponding to the user data, the second parameter is used to indicate the power adjustment coefficient corresponding to the reference signal, and the parameter index value is used to indicate the preset value corresponding to the first parameter and / or the second parameter.

[0209] The interface module 1202 is further configured to receive second information, where the second information includes a first symbol sequence, where the first symbol sequence includes a first sequence corresponding to the user data and a second sequence corresponding to the reference signal.

[0210] The processing module 1201 is configured to demodulate the first symbol sequence according to the first information.

[0211] In one embodiment, the first parameter and / or the second parameter corresponds to the modulation and coding strategy MCS, or; the first parameter and / or the second parameter corresponds to the reference signal generation method, or; the first parameter and / or the second parameter corresponds to the user data modulation method, or; the first parameter and / or the second parameter corresponds to the reference signal generation method and the user data modulation method.

[0212] In one embodiment, the association relationship between the first parameter and the second parameter includes: the relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize the resource occupancy corresponding to the first sequence and / or the second sequence.

[0213] In one embodiment, the first indicator includes at least one of the following information: a data-reference signal resource ratio, a reference signal resource overhead, and a data transmission efficiency, wherein the data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

[0214] In one embodiment, the relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and A and B are both positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β=1+(1-α)*(1 / S-1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

[0215] In one embodiment, if the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

[0216] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2.

[0217] In one embodiment, if the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2.

[0218] When the communication device 1300 is used to implement the functions of the first device or the second device in the above embodiments, for other functions that can be implemented by the communication device 1200, reference can be made to the relevant introduction of the embodiment shown in Figure 7 or Figure 9, and no further details are given.

[0219] In a simple embodiment, those skilled in the art may appreciate that the communication device 1200 may be in the form shown in Figure 6. For example, the processor 601 in Figure 6 may call computer-executable instructions stored in the memory 603 to enable the communication device 1200 to perform the method described in the above method embodiment.

[0220] For example, the functions / implementation process of the processing module 1201 in Figure 12 can be implemented by the processor 601 in Figure 6. For another example, the functions / implementation process of the interface module 1202 in Figure 12 can be implemented by the communication interface 604 in Figure 6.

[0221] It is understandable that one or more of the above modules or units can be implemented by software, hardware or a combination of the two. When any of the above modules or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow. The processor can be built into an SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core used to execute software instructions to perform calculations or processing within the processor, it can further include necessary hardware accelerators, such as field programmable gate arrays (FPGAs), PLDs (programmable logic devices), or logic circuits that implement dedicated logic operations.

[0222] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0223] Optionally, the present application also provides a chip system, comprising: at least one processor and an interface, wherein the at least one processor is coupled to a memory via the interface, and when the at least one processor executes a computer program or instruction in the memory, the method in any of the above method embodiments is executed. In one possible implementation, the chip system also includes a memory. Optionally, the chip system can be composed of a chip, or can include a chip and other discrete devices, which is not specifically limited in this application.

[0224] Optionally, the present application also provides a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by a computer program to instruct the relevant hardware. The program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be an internal storage unit of the communication device of any of the above-mentioned embodiments, such as a hard disk or memory of the communication device. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned communication device, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned communication device. Furthermore, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned communication device and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned communication device. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0225] Optionally, the present application also provides a computer program product. All or part of the processes in the above method embodiments may be completed by a computer program instructing related hardware. The program may be stored in the above computer program product, and when executed, the program may include the processes in the above method embodiments.

[0226] Optionally, the present application also provides a computer instruction. All or part of the process in the above method embodiment can be completed by the computer instruction to instruct the relevant hardware (such as a computer, processor, network device or terminal, etc.). The program can be stored in the above computer-readable storage medium or in the above computer program product.

[0227] Optionally, the present application also provides a communication system, including: the first device and the second device in the above embodiment.

[0228] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0229] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0230] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0231] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

Claims

1. A communication method, characterized in that: The method comprises: Modulating the user data and the reference signal to obtain a first symbol sequence, wherein the first symbol sequence includes a first sequence corresponding to the user data and a second sequence corresponding to the reference signal; Determine the average transmit power of user data according to the first parameter, and determine the average transmit power of the reference signal according to the second parameter; the first parameter is used to indicate a power adjustment coefficient corresponding to the user data, and the second parameter is used to indicate a power adjustment coefficient corresponding to the reference signal, and the first parameter and / or the second parameter are preset values, or the relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize the resource occupancy corresponding to the first sequence and / or the second sequence; The first symbol sequence is output.

2. The method according to claim 1, characterized in that The first parameter and / or the second parameter are preset values, specifically including: The first parameter and / or the second parameter corresponds to a modulation and coding strategy MCS, or; The first parameter and / or the second parameter corresponds to a generation method of a reference signal, or; The first parameter and / or the second parameter corresponds to a modulation mode of user data, or; The first parameter and / or the second parameter corresponds to a generation method of a reference signal and a modulation method of user data.

3. The method according to claim 1 or 2, characterized in that: The first parameter is a preset value, specifically including: The preset value is 1, 0.9, 0.85, 0.82, 0.8, 0.77, 0.75, 0.5, 0.48 or 0.

45.

4. The method according to claim 1, characterized in that The first indicator includes at least one of the following information: data-reference signal resource ratio, reference signal resource overhead, and data transmission efficiency, wherein the data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

5. The method according to claim 1 or 4, characterized in that: The relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and both A and B are positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β = 1 + (1 - α) * (1 / S - 1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

6. The method according to claim 1 or 4, characterized in that: If the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

7. The method according to any one of claims 1 to 6, characterized in that: If the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents a power adjustment coefficient corresponding to the user data of the first user, α2 represents a power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, the method further includes: Determine α1 and α2, wherein if the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2; The second parameter β is determined according to the α1 and α2.

8. The method according to any one of claims 1 to 7, characterized in that: If the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents a power adjustment coefficient corresponding to the user data of the first user, α2 represents a power adjustment coefficient corresponding to the user data of the second user, and β represents the second parameter, the method further includes: Determine α1 and α2, wherein if the modulation and coding strategy MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2; The second parameter β is determined according to the α1 and α2.

9. The method according to any one of claims 1 to 8, characterized in that: The first parameter and the second parameter satisfy: A ratio of the maximum transmit power to the average transmit power of the first symbol sequence is less than or equal to a first threshold; and / or, The maximum amplitude value of transmitting the first symbol sequence is less than or equal to a second threshold.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: Send at least one of the following information: a parameter index value, the first parameter, the second parameter, or an association between the first parameter and the second parameter, wherein the parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter.

11. The method according to any one of claims 1 to 10, characterized in that: The method further comprises: The first modulation and coding strategy MCS index value is adjusted to a second MCS index value according to the first parameter and the second parameter, wherein the modulation order corresponding to the first MCS index value is the same as that corresponding to the second MCS index value.

12. A communication method, characterized in that: The method comprises: Receive first information, where the first information includes at least one of the following information: a parameter index value, a first parameter, a second parameter, or an association relationship between the first parameter and the second parameter; wherein the first parameter is used to indicate a power adjustment coefficient corresponding to user data, the second parameter is used to indicate a power adjustment coefficient corresponding to a reference signal, and the parameter index value is used to indicate a preset value corresponding to the first parameter and / or the second parameter; receiving second information, where the second information includes a first symbol sequence, where the first symbol sequence includes a first sequence corresponding to the user data and a second sequence corresponding to the reference signal; The first symbol sequence is demodulated according to the first information.

13. The method according to claim 12, characterized in that The first parameter and / or the second parameter corresponds to a modulation and coding strategy MCS, or; The first parameter and / or the second parameter corresponds to a generation method of a reference signal, or; The first parameter and / or the second parameter corresponds to a modulation mode of user data, or; The first parameter and / or the second parameter corresponds to a generation method of a reference signal and a modulation method of user data.

14. The method according to claim 12 or 13, characterized in that The first parameter is a preset value, specifically including: The preset value is 1, 0.9, 0.85, 0.82, 0.8, 0.77, 0.75, 0.5, 0.48 or 0.

45.

15. The method according to claim 12, characterized in that The association relationship between the first parameter and the second parameter includes: The relationship between the first parameter and the second parameter is determined based on at least one of the following information: the number of resource elements corresponding to the first sequence, the number of resource elements corresponding to the second sequence, or a first indicator, wherein the first indicator is used to characterize the resource occupancy corresponding to the first sequence and / or the second sequence.

16. The method according to claim 15, characterized in that The first indicator includes at least one of the following information: data-reference signal resource ratio, reference signal resource overhead, and data transmission efficiency, wherein the data-reference signal resource ratio represents the ratio of the number of resource elements corresponding to the first sequence to the number of resource elements corresponding to the second sequence, the reference signal resource overhead represents the ratio of the number of resource elements corresponding to the second sequence to the number of resource elements corresponding to the first symbol sequence, and the data transmission efficiency represents the ratio of the number of resources occupied by the first sequence in the first symbol sequence to the total number of resources occupied by the first symbol sequence.

17. The method according to any one of claims 12 to 16, characterized in that: The relationship between the first parameter α and the second parameter β satisfies at least one of the following conditions: α*A+β*B=A+B, where A represents the number of resource elements corresponding to the first sequence, B represents the number of resource elements corresponding to the second sequence, and both A and B are positive integers, or; β=1+(1-α)*P, where P represents the data-reference signal resource ratio, P=A / B, or; β = 1 + (1 - α) * (1 / S - 1), where S represents the reference signal overhead, or; β=1+(1-α)*J / (1-J), where J represents the data transmission rate, or.

18. The method according to any one of claims 12 to 16, characterized in that: If the user data includes user data of a first user and user data of a second user, the relationship between the first parameter and the second parameter satisfies: α1*A1+α2*A2+β*B=A1+A2+B, wherein the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, β represents the second parameter, A1 represents the number of resource elements corresponding to the user data of the first user in the first sequence, A2 represents the number of resource elements corresponding to the user data of the second user in the first sequence, and B represents the number of resource elements corresponding to the second sequence.

19. The method according to any one of claims 12 to 18, characterized in that: If the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the modulation order corresponding to the user data of the first user is higher than the modulation order corresponding to the user data of the second user, then α1<α2.

20. The method according to any one of claims 12 to 18, characterized in that: If the user data includes user data of a first user and user data of a second user, the first parameter includes α1 and α2, α1 represents the power adjustment coefficient corresponding to the user data of the first user, α2 represents the power adjustment coefficient corresponding to the user data of the second user, and the MCS index value corresponding to the user data of the first user is higher than the MCS index value corresponding to the user data of the second user, then α1<α2.

21. A communication device, characterized in that: include: A processor, wherein the processor is coupled to a memory, wherein the memory is used to store programs or instructions, and when the programs or instructions are executed by the processor, the method according to any one of claims 1 to 11 is executed.

22. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the method according to any one of claims 12 to 20 is executed.

23. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed, the method according to any one of claims 1 to 11 is executed, or the method according to any one of claims 12 to 20 is executed.

24. A computer program product, comprising computer program code, characterized in that: When the computer program code is executed on a computer, the method according to any one of claims 1 to 11 is executed, or the method according to any one of claims 12 to 20 is executed.

25. A communication system, characterized in that: The communication system comprises the communication device according to claim 21 and the communication device according to claim 22.

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