Communication method and device

Abstract

The invention provides a communication method and device, relates to the field of communication, and can improve the precision of estimating phase noise (PHN) so as to improve the demodulation performance of data. The method comprises: a transmitting end device determining a first power parameter, the first power parameter being determined according to at least one of a bandwidth of first data, a coding modulation policy of second data, and a carrier frequency of the first data, the first data comprising the second data and a reference signal, the coding modulation strategy comprises at least one of a modulation mode of the second data and a code rate of the second data; and sending the first data according to the first power parameter.

Description

Communication method and device Technical Field

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

[0002] Driven by the ever-increasing demand for communications, high-frequency (HF) has become a research hotspot in the industry due to its abundant spectrum resources. High-frequency spectral resources offer significant advantages, including wide bandwidth, highly integrated antenna arrays, and the ability to achieve high throughput. However, high-frequency phase noise (PHN) can introduce common phase error (CPE) in the frequency domain of cyclic prefix (CP)-orthogonal frequency division multiplexing (OFDM) and discrete Fourier transform spreading (DFT-S-OFDM) waveforms, severely impacting data demodulation performance.

[0003] To address high-frequency phase noise, which cannot be ignored, existing protocols support estimating PHN using a discrete phase-tracking reference signal (PTRS) and performing compensation based on the estimated value. However, at higher transmission frequencies, PHN is less regular, reducing the accuracy of PHN estimation and, consequently, degrading data demodulation performance.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a communication method and apparatus that can improve the accuracy of estimating phase noise PNH, thereby improving data demodulation performance.

[0006] In a first aspect, a communication method is provided. The method can be executed by a transmitting device, or by a component of the transmitting device, such as a processor, chip, or chip system of the transmitting device, or by a logic module or software capable of implementing all or part of the functions of the transmitting device. The method includes: determining a first power parameter, where the first power parameter is determined based on at least one of a bandwidth of first data, a coding and modulation strategy of second data, and a carrier frequency of the first data, where the first data includes second data and a reference signal, and the coding and modulation strategy includes at least one of a modulation mode of the second data and a code rate of the second data; and transmitting the first data based on the first power parameter.

[0007] Based on this solution, since different transmission powers are used during data transmission in the high frequency band, the severity of the phase noise PHN during the transmission process is different. Therefore, the transmitting end device sends the first data by determining the first power parameter based on at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data. That is to say, the first power parameter determined in the embodiment of the present application takes into account the influence of factors such as bandwidth, coding modulation strategy, and carrier frequency on the first power parameter. Therefore, it is possible to select a suitable power parameter (i.e., the first power parameter) under different factors such as bandwidth, coding modulation strategy, and carrier frequency. For example, a power parameter that can reduce the severity of PHN (i.e., improve the regularity of PHN) is selected, so that the accuracy of the PHN estimation of the receiving end device is improved, thereby improving the demodulation performance of the data, that is, improving the transmission performance of the data.

[0008] In one possible design, the reference signal may be a phase noise reference signal PTRS.

[0009] In one possible design, the sending device may be a terminal device or a network device.

[0010] In one possible design, determining the first power parameter includes: determining multiple power parameters based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data, where the multiple power parameters include the first power parameter.

[0011] In one possible design, the communication method also includes: receiving second indication information, where the second indication information indicates the first power parameter.

[0012] In one possible design, the second indication information is carried in at least one of radio resource control RRC signaling, media access control layer control element MAC-CE signaling, and downlink control information DCI.

[0013] Based on this possible design, it may not be possible to determine a unique power parameter based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data. Instead, a power parameter range (i.e., multiple power parameters) may be determined. In this case, the first power parameter can be determined from the multiple power parameters based on an instruction from the receiving device (i.e., the second instruction information), thereby enabling the transmitting device to send the first data based on the first power parameter.

[0014] In one possible design, the first power parameter is the transmission power of the first data; or, the first power parameter is the energy EPRE of the unit resource element corresponding to the reference signal, or, the first power parameter is used to determine EPRE, and EPRE is used to determine the transmission power of the first data.

[0015] In one possible design, when the first power parameter is EPRE, or when the first power parameter is used to determine EPRE, the transmission power of the first data is the product of the power scaling factor of the first data and the symbol value of the preset layer constellation point of the constellation diagram corresponding to the modulation mode, and the power scaling factor is determined based on the first power parameter.

[0016] In one possible design, a carrier frequency of the first data is greater than a first threshold.

[0017] Based on this possible design, since the PHN is more regular or absent when the carrier frequency is less than or equal to the first threshold, it is not necessary to use the method of determining the first power parameter in this solution to estimate the PHN, thereby enabling demodulation of the first data. However, using the method of this solution to send the first data actually reduces data transmission efficiency and increases data transmission complexity. Therefore, using the method of this solution only when the carrier frequency of the first data is greater than the first threshold can improve the severity of the PHN (i.e., improve the regularity of the PHN), thereby improving the accuracy of the PHN estimation by the receiving device, thereby improving data demodulation performance, i.e., improving data transmission performance.

[0018] In one possible design, determining the first power parameter includes: determining the first power parameter when the terminal device supports configuration of the power parameter of the first data.

[0019] In one possible design, the first power parameter is a power parameter corresponding to the first parameter set in the first correspondence, the first parameter set includes at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data, and the first correspondence includes a correspondence between the parameter set and the power parameter.

[0020] Based on this possible design, the transmitting device can first determine the first corresponding relationship. During the transmission of the first data, the transmitting device only needs to determine the first power parameter from the first corresponding relationship. Compared with the process of recalculating the transmission power based on at least one of the bandwidth, coding modulation strategy, and carrier frequency each time during data transmission, the complexity of data transmission can be reduced.

[0021] In one possible design, determining the first power parameter includes: receiving first indication information, the first indication information indicating a first corresponding relationship, and determining the first power parameter based on the first corresponding relationship.

[0022] In one possible design, determining the first power parameter includes determining a first corresponding relationship, and determining the first power parameter from the first corresponding relationship.

[0023] In one possible design, the first correspondence is defined by a protocol.

[0024] In a second aspect, a communication method is provided. The method can be executed by a receiving device, or by a component of the receiving device, such as a processor, chip, or chip system of the receiving device, or by a logic module or software capable of implementing all or part of the functions of the receiving device. The method includes: determining a first power parameter based on at least one of a bandwidth of first data, a coding and modulation strategy of second data, and a carrier frequency of the first data, the first data including the second data and a reference signal, the coding and modulation strategy including at least one of a modulation mode of the second data and a code rate of the second data; and sending second indication information, the second indication information indicating the first power parameter.

[0025] Based on this solution, since different transmission powers are used during data transmission in the high frequency band, the severity of the phase noise PHN during the transmission process is different. Therefore, the receiving end device determines the first power parameter based on at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data, so that the transmitting end device can send the first data according to the first power parameter. That is, the first power parameter determined in the embodiment of the present application takes into account the influence of factors such as bandwidth, coding modulation strategy, and carrier frequency on the first power parameter. During the transmission of the first data, it is possible to select a suitable power parameter (i.e., the first power parameter), for example, a power parameter that can reduce the severity of PHN (i.e., improve the regularity of PHN), so that the accuracy of the receiving end device in estimating PHN is improved, thereby improving the demodulation performance of the data, that is, improving the transmission performance of the data.

[0026] In one possible design, the reference signal may be a phase noise reference signal PTRS.

[0027] In one possible design, the receiving device may be a network device or a terminal device.

[0028] In one possible design, determining the first power parameter includes: determining multiple power parameters based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data, where the multiple power parameters include the first power parameter.

[0029] In one possible design, the second indication information is carried by at least one of the radio resource control RRC signaling, the media access control layer control element MAC-CE signaling, and the downlink control information DCI.

[0030] In one possible design, the first power parameter is the transmission power of the first data; or, the first power parameter is the energy EPRE of a unit resource element corresponding to the reference signal, or, the first power parameter is used to determine EPRE, and EPRE is used to determine the transmission power of the first data.

[0031] In one possible design, a carrier frequency of the first data is greater than a first threshold.

[0032] In one possible design, determining the first power parameter includes: determining the first power parameter when the terminal device supports configuration of the power parameter of the first data.

[0033] In one possible design, the first power parameter is a power parameter corresponding to the first parameter set in the first correspondence, the first parameter set includes at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data, and the first correspondence includes a correspondence between the parameter set and the power parameter.

[0034] In a third aspect, a communication device is provided for implementing various methods. The communication device may be the transmitting device described in the first aspect, or a device included in the transmitting device, such as a chip or chip system; or the communication device may be the receiving device described in the second aspect, or a device included in the receiving device, such as a chip or chip system; the communication device includes modules, units, or means corresponding to the implementation method, which may be implemented through hardware, software, or hardware executing the corresponding software implementation. The hardware or software includes one or more modules or units corresponding to the functions.

[0035] In some possible designs, the communication device may include a processing module and a transceiver module. The processing module may be configured to implement the processing functionality of any of the above aspects and any possible implementations thereof. The transceiver module may include a receiving module and a transmitting module, respectively configured to implement the receiving functionality and the transmitting functionality of any of the above aspects and any possible implementations thereof.

[0036] In some possible designs, the transceiver module may be composed of a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0037] In a fourth aspect, a communication device is provided, comprising: a processor and a memory; the memory is configured to store computer instructions, and when the processor executes the instructions, the communication device performs the method described in any aspect. The communication device may be the transmitting device described in the first aspect, or a device included in the transmitting device, such as a chip or a chip system; or the communication device may be the receiving device described in the second aspect, or a device included in the receiving device, such as a chip or a chip system.

[0038] In a fifth aspect, a communication device is provided, comprising: a processor and a communication interface; the communication interface is configured to communicate with a module external to the communication device; and the processor is configured to execute a computer program or instruction to cause the communication device to perform the method described in any aspect. The communication device may be the transmitting device described in the first aspect, or a device included in the transmitting device, such as a chip or chip system; or the communication device may be the receiving device described in the second aspect, or a device included in the receiving device, such as a chip or chip system.

[0039] In a sixth aspect, a communication device is provided, comprising: at least one processor; the processor is configured to execute a computer program or instruction stored in a memory, so that the communication device performs the method described in any aspect. The memory may be coupled to the processor, or may be independent of the processor. The communication device may be the transmitting device described in the first aspect, or a device included in the transmitting device, such as a chip or chip system; or the communication device may be the receiving device described in the second aspect, or a device included in the receiving device, such as a chip or chip system.

[0040] In some possible designs, the communication device includes a memory for storing necessary program instructions and data.

[0041] In some possible designs, when the device is a chip system, it can be composed of a chip or include a chip and other discrete devices.

[0042] It can be understood that when the communication device provided in any one of the third to tenth aspects is a chip, the sending action / function of the communication device can be understood as output information, and the receiving action / function of the communication device can be understood as input information.

[0043] In a seventh aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer-readable storage medium is run on a communication device, the communication device can execute the method described in any one of the aspects.

[0044] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a communication device, enables the communication device to execute the method described in any one of the aspects.

[0045] In a ninth aspect, a chip is provided, comprising: a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the programs or instructions are executed by the processor, the chip executes the method described in any one of the aspects.

[0046] In the tenth aspect, a system is provided, comprising: a sending end device or an apparatus contained in the sending end device provided in any one of the third to sixth aspects, and a receiving end device or an apparatus contained in the receiving end device provided in any one of the third to sixth aspects.

[0047] Among them, the technical effects brought about by any design method in the third to sixth aspects can refer to the technical effects brought about by different design methods in the first or second aspects, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a schematic diagram of a signal power spectrum provided in an embodiment of the present application;

[0049] FIG2 is a schematic diagram of a multi-carrier spectrum provided in an embodiment of the present application;

[0050] FIG3 is a schematic diagram of signal generation and reception provided by an embodiment of the present application;

[0051] FIG4 is a schematic diagram of a curve showing phase variation over time provided by an embodiment of the present application;

[0052] FIG5 is a schematic diagram of the effect of phase noise on constellation points provided by an embodiment of the present application;

[0053] FIG6 is a schematic diagram of a curve showing a power spectrum density of phase noise varying with frequency, provided in an embodiment of the present application;

[0054] FIG7 is a schematic structural diagram of a communication system provided in an embodiment of the present application;

[0055] FIG8 is a schematic diagram of another signal generation and reception method provided in an embodiment of the present application;

[0056] FIG9 is a schematic structural diagram of another communication system provided in an embodiment of the present application;

[0057] FIG10 is a flow chart of a communication method according to an embodiment of the present application;

[0058] FIG11 is a flow chart of another communication method provided in an embodiment of the present application;

[0059] FIG12 is a flow chart of another communication method provided in an embodiment of the present application;

[0060] FIG13 is a flow chart of another communication method provided in an embodiment of the present application;

[0061] FIG14 is a flow chart of another communication method provided in an embodiment of the present application;

[0062] FIG15 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0063] FIG16 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0064] FIG17 is a schematic structural diagram of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0065] In the description of this application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0066] In the description of this application, unless otherwise specified, "plurality" means two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0067] In addition, to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily mean different.

[0068] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0069] It will be understood that the “embodiment” mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It will be understood that in the various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0070] It can be understood that in this application, "when" and "if" both mean that corresponding processing will be taken under certain objective circumstances, and do not limit the time, nor do they require any judgment action when implementing, nor do they mean that there are other limitations.

[0071] It is understood that some optional features in the embodiments of the present application may, in certain scenarios, be implemented independently of other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects. They may also be combined with other features in certain scenarios as needed. Accordingly, the devices provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

[0072] In this application, unless otherwise specified, the same or similar parts between the various embodiments can refer to each other. In the various embodiments in this application, and the various implementation methods / implementation methods / implementation methods in each embodiment, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment are consistent and can be referenced to each other. The technical features in different embodiments and the various implementation methods / implementation methods / implementation methods in each embodiment can be combined to form new embodiments, implementation methods, implementation methods, or implementation methods according to their inherent logical relationships. The implementation methods of this application described below do not constitute a limitation on the scope of protection of this application.

[0073] In order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction to the relevant technologies of the present application is first given as follows.

[0074] 1. Peak to average power ratio (PAPR):

[0075] As shown in Figure 1, when observed in the time domain, a wireless signal is a sinusoidal wave with a constantly changing amplitude. Its amplitude is not constant. The peak amplitude of the signal in one cycle is different from the peak amplitude of the signal in other cycles. Therefore, the average power and peak power of the wireless signal in each cycle are different. The peak power is the peak power with a preset probability (usually 1%, i.e. 10) within a certain period of time. -2 ) The maximum transient power that occurs. PAPR is the ratio of peak power to the average power of the system.

[0076] The PAPR of the system is related to the following two factors:

[0077] (1) PAPR of the baseband signal; the PAPR of the baseband signal is positively correlated with the PAPR of the system.

[0078] For example, the PAPR of a baseband signal modulated by 1024-quadrature amplitude modulation (QAM) is large, resulting in a large system PAPR. For another example, the PAPR of a baseband signal modulated by quadrature phase shift keying (QPSK) and binary phase shift keying (BPSK) is low, resulting in a low system PAPR. The signal amplitude of the baseband signals modulated by QPSK and BPSK is constant, so the PAPR of the baseband signals modulated by QPSK and BPSK is 1.

[0079] (2) PAPR introduced by multi-carrier superposition: The PAPR introduced by multi-carrier superposition is positively correlated with the PAPR of the system.

[0080] For example, in an orthogonal frequency division multiplexing (OFDM) system, a schematic diagram of the spectrum of multiple carriers is shown in Figure 2. As shown in Figure 2, the signal on each single carrier is reflected as a sinc function (i.e., the signal corresponding to the waveform implemented in Figure 2), that is, the signal has tails on both sides of the peak. The tails of multiple carriers may overlap at a certain position to form a point with high peak power, which may cause a large PAPR of the system. The dotted waveform in Figure 2 is the signal amplitude after the multi-carrier superposition under different subcarrier indices.

[0081] In wireless systems, power amplification increases signal strength, enabling the signal to reach greater distances. However, due to technical and equipment cost limitations, a power amplifier can only operate in its linear operating range, where the signal power is linearly amplified and the receiving device can correctly interpret the signal. When the PAPR is too high, the power amplifier operates in a nonlinear region, causing signal distortion. This prevents the receiving device from correctly interpreting the signal. Therefore, power backoff is necessary to ensure that the peak power of the signal remains within this range. However, this approach significantly reduces amplifier efficiency, which in turn reduces the signal's coverage range.

[0082] 2. Cyclic prefix (CP)-OFDM signal:

[0083] The CP-OFDM signal is obtained by mapping the modulated modulation symbols onto frequency domain subcarriers, performing Fourier transform on the modulated symbols, and then adding a cyclic prefix to the transformed signal.

[0084] 3. Discrete Fourier transform spreading orthogonal frequency division multiplexing (DFT-S-OFDM) signal:

[0085] A DFT-s-OFDM signal is a transformed CP-OFDM signal. Figure 3 shows a schematic diagram of DFT-s-OFDM signal generation and reception. The transmitting device performs a serial-to-parallel (s-to-p) conversion on the N-point modulation symbols generated by encoding, followed by an N-point discrete Fourier transform (N-point DFT). After transforming the symbols to the frequency domain, the transmitting device filters them, or directly maps them to frequency domain subcarriers without filtering, a process known as subcarrier mapping. The transmitting device then performs an M-point inverse discrete Fourier transform (M-point IDFT) and a parallel-to-serial (p-to-s) conversion. Finally, the transmitting device adds a cyclic prefix (CP) to obtain the transmitted DFT-s-OFDM signal. Therefore, the transmitting end device transmits the DFT-S-OFDM signal through a digital to analog converter (DAC) or a radio frequency (RF) device.

[0086] After receiving the signal through RF or DAC, the receiving device removes the CP from the received signal, performs an s-to-p transform, then performs an M-point DFT transform, and performs subcarrier demapping or equalization. The receiving device then performs an N-point inverse discrete Fourier transform (IDFT) and a p-to-s transform before inputting the signal into the demodulator for demodulation (detection).

[0087] The DFT-S-OFDM signal is a single carrier, so compared to the CP-OFDM signal, the PAPR of the DFT-S-OFDM signal is lower, that is, the signal transmission power is smaller. That is, compared to the CP-OFDM signal, the DFT-S-OFDM signal can transmit the signal with a smaller transmission power, thereby reducing the cost of the transmitting device, improving the power transmission efficiency of the transmitting device, and extending the battery life of the transmitting device.

[0088] However, broadband signals in high-frequency communications, such as CP-OFDM and DFT-s-OFDM, inherently have large PAPRs, which can cause severe distortion in power devices due to excessive transmit power. Therefore, to reduce signal transmit power, high-frequency communications require waveforms with lower PAPRs.

[0089] 4. Phase noise (PHN):

[0090] PHN refers to the random change in the phase of the output signal of a communication device (such as various radio frequency devices) that transmits a signal caused by various noises.

[0091] Because high frequencies provide large bandwidth and highly integrated antenna arrays for communication, achieving high throughput, communication systems are increasingly utilizing high-frequency bands (millimeter wave bands, primarily including 28 GHz, 39 GHz, 60 GHz, and 73 GHz) to transmit signals to meet growing communication demands. However, the problem of PHN in high-frequency bands is particularly prominent. As the frequency band increases, the PHN power spectral density increases, which in turn increases the impact on the signal received by the receiving device. This worsens PHN, leading to poor signal demodulation performance and reduced communication quality.

[0092] The impact of PHN on the signal y(n) can be expressed as:

[0093] Where x(n) is the signal, θ n is the value of PHN, n = 0, 1, ... N-1, and n is the time domain sampling point. In other words, PHN is a random phase value generated at each sampling point n of the signal.

[0094] Figure 4 shows a graph of the phase variation over time within the range of [-40, 30] degrees. Curve 2 in Figure 4 represents a signal with a higher frequency than Curve 1. As shown in Figure 4, as the frequency band increases, the phase noise power spectral density increases, which in turn has a greater impact on the received signal. This means that deteriorating phase noise leads to poor demodulation performance.

[0095] In the new radio (NR) communication system, phase tracking reference signal (PTRS) is introduced to perform phase compensation to improve the demodulation performance under phase noise conditions. For example, Figure 5 (a) shows the impact of phase noise on the receiving performance of the receiving device when phase noise compensation is not performed, and Figure 5 (b) shows the impact of phase compensation on the receiving performance of the receiving device. As can be seen from Figure 5, after the signal is phase compensated, the receiving performance is significantly improved. Among them, the receiving performance is positively correlated with the demodulation performance.

[0096] For multi-carrier (such as OFDM signals) and single-carrier (such as DFT-S-OFDM signals), PTRS can be considered as part of the modulation symbol. In other words, the modulation symbol is obtained by encoding and modulating the data and PTRS. Furthermore, the carrier (single carrier or multi-carrier) sent by the transmitting device is also formed by processing the data and PTRS through the transmission process of Figure 3. Among them, the position of PTRS is fixed.

[0097] Under phase noise conditions, for the receiving device, the phase and amplitude of the data are unknown, while the phase and amplitude of the PTRS are known. Therefore, the receiving device can directly estimate the PHN based on the PTRS and the received data corresponding to the PTRS received by the receiving device.

[0098] 5. PTRS configuration:

[0099] (1) PTRS configuration in OFDM signal:

[0100] The PTRS configuration and configuration parameters in the current protocol are the same for both uplink and downlink OFDM signals. The network device's PTRS configuration includes frequency domain density configuration and time domain density configuration. The time domain density of PTRS is related to the data's modulation and coding scheme (MCS) index value. The MCS index value configured by the network device for PTRS falls within the range of (0, PTRS-MCS1), [PTRS-MCS1, PTRS-MCS2), [PTRS-MCS2, PTRS-MCS3), and [PTRS-MCS3, PTRS-MCS4). Alternatively, the network device can configure different MCS index thresholds for PTRS, such as PTRS-MCS1, PTRS-MCS2, and PTRS-MCS3. In this case, PTRS-MCS1, PTRS-MCS2, and PTRS-MCS3 correspond to four different ranges: (0, PTRS-MCS1), [PTRS-MCS1, PTRS-MCS2), [PTRS-MCS2, PTRS-MCS3), and [PTRS-MCS3, PTRS-MCS4). The MCS index value of the data is I MCS When in different ranges, the time domain density of the PTRS used is different.

[0101] As shown in Table 1, when the MCS index value of the data is I MCS When the MCS index value of the data is in the range of (0, PTRS-MCS1), the time domain density of the PTRS corresponding to the data is 0, indicating that there is no PTRS on the time domain symbol. MCSWhen the MCS index value of the data is in the range of [PTRS-MCS1, PTRS-MCS2), the time domain density of the PTRS corresponding to the data is 4, which means that there is a PTRS on every 4 time domain symbols. MCS When the data is in the range of [PTRS-MCS2, PTRS-MCS3), the time domain density of the PTRS corresponding to the data is 2, indicating that there is a PTRS on every 2 time domain symbols. MCS When in the range of [PTRS-MCS2, PTRS-MCS3), the time domain density of the PTRS corresponding to the data is 1, indicating that there is one PTRS on each time domain symbol.

[0102] Table 1

[0103] The frequency domain density of PTRS is related to the scheduling bandwidth of the data, that is, when the scheduling bandwidth of the data is in different ranges, the frequency domain density of PTRS corresponding to the data is different. The scheduling bandwidth N configured by the network device for PTRS RB The range includes (0, N RB0 ), [N RB0 , N RB1 ), [N RB1 Alternatively, the network device can configure different bandwidth thresholds for PTRS, such as N RB0 、N RB1 , at this time N RB0 、N RB1 Corresponding to three different ranges: (0, N RB0 ),[N RB0 , N RB1 ) and [N RB1 ,∞).

[0104] As shown in Table 2, the scheduling bandwidth N of this data RB In (0, N RB0 ) range, the frequency density of the PTRS corresponding to the data is 0, indicating that there is no PTRS in the bandwidth; the scheduling bandwidth of the data is N RB In [N RB0 , N RB1 ) range, the frequency density of the PTRS corresponding to the data is 2, which means that there is a PTRS resource element (RE) in every 2 resource blocks (RB) within the bandwidth; the scheduling bandwidth of the data is N RB In [N RB1 ,∞), the frequency density of PTRS corresponding to the data is 4, indicating that there is a PTRS RE in every 4 RBs within the bandwidth.

[0105] Table 2

[0106] (2) PTRS configuration in DFT-S-OFDM signal:

[0107] The PTRS of the DFT-S-OFDM signal only has a frequency domain density configuration. In other words, the density of the PTRS is only related to the scheduling bandwidth of the data. That is, when the scheduling bandwidth of the data is in different ranges, the density of the PTRS corresponding to the data is different. The scheduling bandwidth N configured by the network device for PTRS RB The range includes (0, N RB0 ), [N RB0 , N RB1 ), [N RB1 , N RB2 ), [N RB2 , N RB3 ), [N RB3 , N RB4 ), [N RB4 Alternatively, the network device can configure different bandwidth thresholds for PTRS, such as N RB0 、N RB1 、N RB2 、N RB3 、N RB4 , at this time N RB0 、N RB1 、N RB2 、N RB3 、N RB4 Corresponding to six different ranges: (0, N RB0 ), [N RB0 , N RB1 ), [N RB1 , N RB2 ), [N RB2 , N RB3 ), [N RB3 , N RB4 ), [N RB4 ,∞).

[0108] As shown in Table 3, the scheduling bandwidth N of this data RB In (0, N RB0 ) range, the frequency density of the PTRS corresponding to the data is 0, indicating that there is no PTRS in the bandwidth; the scheduling bandwidth of the data is N RB In [N RB0 , N RB1 ) range, the PTRS blocks corresponding to the data are 2, and the number of PTRS in each PTRS block is 2 (ie, each PTRS block includes 2 PTRS REs); the scheduling bandwidth of the data is N RB In [N RB1 , NRB2 ) range, the PTRS blocks corresponding to the data are 2, and the number of PTRS in each PTRS block is 4 (ie, each PTRS block includes 4 PTRS REs); the scheduling bandwidth of the data is N RB In [N RB2 , N RB3 ) range, the PTRS blocks corresponding to the data are 4, and the number of PTRS in each PTRS block is 2 (ie, each PTRS block includes 2 PTRS REs); the scheduling bandwidth of the data is N RB In [N RB3 , N RB4 ) range, the PTRS blocks corresponding to the data are 4, and the number of PTRS in each PTRS block is 4 (ie, each PTRS block includes 4 PTRS REs); the scheduling bandwidth of the data is N RB In [N RB4 ,∞), the PTRS blocks corresponding to the data are 8, and the number of PTRSs in each PTRS block is 4 (ie, each PTRS block includes 4 PTRS REs, where one PTRS RE can become a PTRS).

[0109] Table 3

[0110] For the PTRS sequence of the DFT-S-OFDM signal, taking the pseudo-random sequence of pi / 2-binary phase shift keying (BPSK) modulation as an example, the sequence can satisfy the following relationship (2) in the time domain:

[0111] Among them, m' represents the time domain position of PTRS, s' represents the number of a PTRS block in multiple PTRS blocks, and k' represents the frequency domain position of PTRS. Expressed as the number of PTRS in each PTRS block, is the number of PTRS blocks. r(m′) is the pseudo-random sequence modulated by pi / 2-BPSK, w(k′) is the orthogonal code of the k′th PTRS in the PTRS block, and c(m′) is the initial sequence of the sequence, which is generally a random sequence of 0 and 1.

[0112] 6. PTRS power:

[0113] When the PSD of PHN is large, the regularity of PHN can be improved by increasing the power of PTRS, thereby improving the accuracy of PHN estimation and further improving the data demodulation performance.

[0114] Currently, in the NR system, the network equipment configures the PTRS power to the terminal device by indicating the energy per resource element (EPRE-ratio) and the number of physical downlink shared channel (PDSCH) layers to the terminal.

[0115] Specifically, the terminal device can obtain the PTRS ratio (PTRS-ratio) ρ based on the EPRE-ratio and the number of PDSCH layers. ρ is the ratio between the EPRE of PTRS and the EPRE of PDSCH. The corresponding relationship between EPRE-ratio, the number of PDSCH layers, and ρ is shown in Table 4 below:

[0116] Table 4

[0117] For example, when the EPRE-ratio is 1 and the number of PDSCH layers is 3, ρ is 3; similarly, when the EPRE-ratio configured by the network device is different and / or the number of PDSCH layers is different, ρ is obtained.

[0118] After determining ρ, the power scaling factor β of PTRS is determined by ρ PTRS , thereby determining the power of PTRS. Among them, ρ and β PTRS The relationship between them satisfies the following relationship (3):

[0119] However, the aforementioned network device configures PTRS power for the terminal device by indicating the EPRE-ratio and the number of PDSCH layers to the terminal. This configuration of PTRS power is based solely on the EPRE-ratio and the number of PDSCH layers. During high-frequency transmission, this method results in poor PHN regularity, reducing the accuracy of PHN estimation and, in turn, degrading data demodulation performance. In other words, during high-frequency transmission, this PHN degrades signal demodulation performance.

[0120] Because PHN becomes a significant factor affecting the block error rate (BLER) of data in the terahertz (THz) frequency band, the PSD of PHN becomes very large, and the PHN component at higher frequencies becomes non-negligible. At this time, PHN occurs across the entire bandwidth, and even white noise occurs in the phase.

[0121] As shown in Figure 6, during THz band transmission, the wider the PTRS bandwidth, the higher the corresponding PHN PSD, the more random the PHN (i.e., the less regular the PHN), making it difficult to estimate. In this case, increasing the PTRS power may not improve the regularity of the PHN. The narrower the PTRS bandwidth, the lower the corresponding PHN PSD, and the better the regularity of the PHN, making it easier to estimate the PHN. In this case, the randomization error caused by the PHN is more significant. Increasing the PTRS power can improve the PHN estimation performance. In Figure 6, the bandwidth of the data represented by curve 3 is greater than the bandwidth of the data represented by curve 4.

[0122] Therefore, based on the above analysis, it can be seen that under different bandwidths, the power of PTRS can affect PHN, and thus affect the data demodulation performance. In other words, under different bandwidths and using different powers, the severity of PHN varies (i.e., the regularity of PHN varies).

[0123] In addition, the power of PTRS affects the PAPR. For example, in general, the modulation methods of PTRS are QPSK and BPSK. The modulation methods of DFT-S-OFDM signals are 16QAM, 64QAM, and QPSK. Among them, for 16QAM and 64QAM, the PAPR of 16QAM is lower than that of 64QAM. Moreover, under 16QAM, if the power of PTRS is reduced, the peak power will not change, but the average power will decrease, thereby increasing the PAPR. Under 64QAM, if the power of PTRS is reduced, the insertion of PTRS will change the distribution of the outermost constellation points of the 64QAM constellation diagram, that is, the outermost constellation points will become dispersed, thereby reducing the PAPR.

[0124] Based on the above analysis, we can see that under different modulation modes, the PTRS power can affect the PAPR, which in turn affects data demodulation performance. In other words, using different powers under different modulation modes can reduce the signal's PAPR, thereby preventing the receiver from being unable to estimate the PHN due to excessively high PAPR. In other words, using different powers under different modulation modes can improve the PHN estimation accuracy, thereby improving data demodulation performance.

[0125] Based on this, the present application proposes a communication method, in which a transmitting device determines a first power parameter based on at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data, and sends the first data according to the first power parameter. In other words, the first power parameter determined in the embodiment of the present application takes into account the impact of factors such as bandwidth, coding modulation strategy, and carrier frequency on the first power parameter. In this way, it is possible to select a suitable power parameter (i.e., the first power parameter) under different factors such as bandwidth, coding modulation strategy, and carrier frequency. For example, a power parameter that can reduce the severity of PHN (i.e., improve the regularity of PHN) is selected, so that the accuracy of the PHN estimation of the receiving device is improved, thereby improving the demodulation performance of the data, that is, improving the transmission performance of the data.

[0126] The technical solutions provided in this application can be used in various communication systems, which may be fourth-generation (4G) long term evolution (LTE) systems, evolved LTE systems (LTE-Advanced, LTE-A) systems, fifth-generation mobile communications (5G) NR systems, vehicle-to-everything (V2X) systems, LTE and NR hybrid networking systems, or device-to-device (D2D) systems, machine-to-machine (M2M) communication systems, Internet of Things (IoT), and other next-generation communication systems, such as sixth-generation (6G) communication systems. Alternatively, the communication system may also be a non-3rd Generation Partnership Project (3GPP) communication system, without limitation.

[0127] The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited to this. It is described uniformly here and will not be repeated below.

[0128] 7 , which illustrates a communication system used in an embodiment of the present application. The communication system includes a transmitting device and a receiving device. The transmitting device and the receiving device are capable of communicating with each other.

[0129] Optionally, the sending end device may be a terminal device, and correspondingly, the receiving end device may be a network device. Alternatively, the sending end device may be a network device, and correspondingly, the receiving end device may be a terminal device.

[0130] Exemplarily, the transmitting device may include a terminal device, and the receiving device may include at least one network device. As shown in FIG8(a), the communication system may include a terminal device (i.e., terminal device #1) and at least one network device (i.e., network device #1, network device #2, and network device #3). Alternatively, as shown in FIG8(b), the communication system may include a network device (i.e., network device #4) and at least one terminal device (i.e., terminal device #2 and terminal device #3).

[0131] Optionally, the network device in the embodiment of the present application is a device that connects a terminal device to a wireless network. The network device may be a node in a wireless access network, which may also be called a base station or a radio access network (RAN) node.

[0132] For example, the network device may include an evolved NodeB (eNB) or e-NodeB in an LTE system or LTE-A system, such as a traditional macro eNB and a micro eNB in ​​a heterogeneous network scenario. Alternatively, it may include a next-generation NodeB (gNB) in an NR system. Alternatively, it may include a transmission reception point (TRP), a home base station (e.g., a home evolved NodeB or HNB), a baseband unit (BBU), a baseband pool (BBU pool), or a wireless fidelity (WiFi) access point (AP). Alternatively, it may include a base station in a non-terrestrial network (NTN), which may be deployed on a high-altitude platform or satellite. In the NTN, the network device may function as a Layer 1 (L1) relay, a base station, a DU, or an integrated access and backhaul (IAB) node. Alternatively, the network device may be a device that implements a base station function in IoT, such as a device that implements a base station function in V2X, D2D, or machine to machine (M2M), but the embodiments of the present application are not limited thereto.

[0133] Optionally, the base station in the embodiment of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, home base stations, TRPs, transmitting points (TPs), mobile switching centers, etc., and the embodiments of the present application do not make specific limitations on this.

[0134] Optionally, the terminal device in the embodiment of the present application may be a user-side device for implementing wireless communication functions, such as a terminal or a chip that can be used in a terminal. The terminal may be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a terminal agent, or a terminal device in a 5G network or a public land mobile network (PLMN) evolved after 5G. The access terminal may 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 capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device or wearable device, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Alternatively, the terminal may be a terminal with communication capabilities in the IoT, such as a terminal in V2X (e.g., a vehicle-to-everything (V2X) device), a terminal in D2D communication, or a terminal in M2M communication. The terminal may be mobile or fixed.

[0135] Optionally, due to the PHN issue during high-frequency band data transmission, in the communication system used in the embodiments of the present application, the transmitting device inserts reference signal data into the second data to form the first data; then determines a first power parameter of the first data, and transmits the first data based on the first power parameter. Because the phase and amplitude of the reference signal are known, the receiving end can estimate the PHN of the reference signal and then use the PHN to demodulate the second data to improve the demodulation performance of the receiving device, that is, to improve the data transmission performance between the transmitting and receiving devices. Optionally, the reference signal can be a PTRS.

[0136] For example, taking the case where the data transmitted from the transmitting device to the receiving device during high-frequency band data transmission is the second data, the sending process of the transmitting device sending the second data can be shown as (a) in Figure 9: the transmitting device modulates the second data and PTRS respectively, and performs Fourier transform (such as DFT, or fast Fourier transform (FFT)) on the modulated second data and PTRS to obtain frequency domain data, wherein the frequency domain data includes the frequency domain data corresponding to the second data and the frequency domain data corresponding to the PTRS (for the convenience of description, the frequency domain data corresponding to the second data and the frequency domain data corresponding to the PTRS are collectively referred to as first frequency domain data below). The first frequency domain data is mapped to the frequency domain subcarrier, and the first frequency domain data on the frequency domain subcarrier is inverse Fourier transform (such as IDFT, or inverse fast Fourier transform (IFFT)) to obtain the first time domain data, and then a cyclic prefix is ​​added to obtain the first data (such as DFT-S-OFDM). A first power parameter is determined, and a radio frequency device for sending the first data is determined based on the first power parameter, and the first data is sent through the radio frequency device.

[0137] The process of receiving the second data by the receiving device can be shown in (b) of Figure 9: The receiving device receives the third data via a radio frequency device. After removing the cyclic prefix of the third data, the second time domain data is obtained. The second time domain data is the first time domain data with the PHN. After Fourier transform, mapping, and inverse Fourier transform are performed on the second time domain data, fourth data corresponding to the second data and fifth data corresponding to the PTRS are obtained. The fourth data is the second data with the PHN, and the fifth data is the PTRS with the PHN. Since the phase and amplitude of the PTRS are known to the receiving device, the receiving device can directly demodulate the fifth data to obtain the PTRS. Since the phase and amplitude of the second data are unknown, the receiving device cannot obtain the second data by demodulating the fourth data alone. Therefore, after obtaining the PTRS, the receiving device can estimate the PHN based on the fifth data and the PTRS, and then demodulate the fourth data based on the PHN to obtain the second data.

[0138] The communication method provided by the embodiment of the present application will be described below in conjunction with the accompanying drawings. It will be understood that in the embodiment of the present application, the transmitting end device or the receiving end device can perform some or all of the steps in the embodiment of the present application, and these steps or operations are merely examples. The embodiment of the present application can also perform other operations or variations of various operations. In addition, the various steps can be performed in different orders presented in the embodiment of the present application, and it is possible that not all operations in the embodiment of the present application need to be performed.

[0139] Referring to FIG10 , a communication method provided in an embodiment of the present application may include the following steps:

[0140] S1001. A transmitting device determines a first power parameter. The first power parameter is determined based on at least one of a bandwidth of first data, a coding and modulation strategy of second data, and a carrier frequency of the first data, where the first data includes the second data and a reference signal, and the coding and modulation strategy includes at least one of a modulation mode of the second data and a code rate of the second data.

[0141] For example, the second data can be understood as data that the transmitting device intends to transmit to the receiving device. However, because high-frequency data transmission may cause PHN, a reference signal (such as PTRS) is introduced. Specifically, the reference signal is inserted into the second data, so that the data transmitted by the transmitting device to the receiving device becomes the first data. The receiving device can then estimate the PHN based on the reference signal and demodulate the second data based on the PHN.

[0142] Optionally, before step S1001, the embodiment of the present application may further include: the sending end device determines whether to execute step S1001.

[0143] In a possible implementation, the transmitting device determines whether to execute step S1001 according to the carrier frequency of the first data.

[0144] Optionally, since the PSD of PHN is small and the regularity of PHN is strong during data transmission in the low frequency band, it is not necessary to adopt the method of the embodiment of the present application to estimate PHN; while in the data transmission process in the high frequency band, the PSD of PHN is large and the regularity of PHN is low, making PHN difficult to estimate, so it is necessary to adopt the method of the embodiment of the present application to improve the accuracy of estimating PHN. That is, when the carrier frequency of the first data is greater than the first threshold, the method of the embodiment of the present application is adopted to improve the accuracy of estimating PHN, that is, step S1001 is executed. When the carrier frequency of the first data is less than or equal to the first threshold, it is not necessary to adopt the method of the embodiment of the present application to estimate PHN, that is, step S1001 is not executed. The first threshold is used to distinguish between high and low frequency bands.

[0145] Exemplarily, whether step S1001 is performed at each carrier frequency can be represented by Table 5:

[0146] Table 5

[0147] Among them, N1, N2, and N3 are all less than or equal to the first threshold, and N4 and N5 are both greater than the first threshold. N1, N2, N3, N4, and N5 are different from each other, and N1 < N2 < N3 < N4 < N5. The carrier frequency shown in Table 5 above can be a specific frequency value, or the carrier frequency shown in Table 5 can also be expressed as a frequency band range. For example, when the first threshold is 220 GHz, N1 can be 100 GHz. Alternatively, N1 can be 100 GHz to 120 GHz.

[0148] For example, when the carrier frequency of the first data is less than or equal to the first threshold, the first power parameter may be a default value of 1 watt (W). The first threshold may be any one of 70 GHz, 80 GHz, 100 GHz, 140 GHz, and 220 GHz, or the first threshold may be other frequencies other than the above examples, which are not limited in the embodiments of the present application.

[0149] In another possible implementation, whether to execute step S1001 is determined based on whether the terminal device supports the configuration of the power parameters of the first data.

[0150] As an example, the transmitting end device is a terminal device, and correspondingly, the receiving end device is a network device. In this case, the terminal device determines whether it supports the configuration of the power parameter of the first data, that is, the terminal device determines whether to perform step S1001.

[0151] If the terminal device supports the configuration of the power parameter of the first data, step S1001 is executed. If the terminal device does not support the configuration of the power parameter of the first data, step S1001 is not executed, and the first power parameter can be a default value of 1 watt (W).

[0152] As another example, the transmitting device is a network device, and the corresponding receiving device is a terminal device. In this case, the network device determines whether to execute step S1001 based on the capability information reported by the terminal device. The capability information indicates whether the terminal device supports the configuration of the power parameters of the first data. If the capability information indicates that the terminal device supports the configuration of the power parameters of the first data, step S1001 is executed. If the capability information indicates that the terminal device does not support the configuration of the power parameters of the first data, step S1001 is not executed.

[0153] S1002: The transmitting end device transmits first data according to the first power parameter. Correspondingly, the receiving end device receives the first data.

[0154] Exemplarily, the first power parameter may include the following four possible implementations:

[0155] In a first possible implementation, the first power parameter is the transmit power of the first data. That is, the transmit power of the first data is determined based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data. Optionally, after determining the first power parameter, the transmitting device can directly transmit the first data based on the first power parameter.

[0156] In a second possible implementation manner, the first power parameter is used to determine the transmission power of the first data.

[0157] Exemplarily, the first power parameter is a power scaling factor. That is, the power scaling factor of the first data is determined based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data. Alternatively, the first power parameter is used to determine the power scaling factor.

[0158] Optionally, the transmission power of the first data is the product of the power scaling factor of the first data and the symbol value of the preset layer constellation point of the constellation diagram corresponding to the modulation mode of the second data. Exemplarily, the preset layer constellation point of the constellation diagram can be the outermost constellation point of the constellation diagram.

[0159] Exemplarily, the power scaling factor of the first data and the transmission power of the first data satisfy the following relationship (4): P = S1 * power scaling factor (4)

[0160] Wherein, P is the transmission power of the first data, S1 is the symbol value of the preset constellation point of the constellation diagram corresponding to the modulation mode of the second data, and the power scaling factor is the power scaling factor of the first data.

[0161] Exemplarily, when the first power parameter is a power scaling factor of the first data, the first power parameter can be any value in a first preset set. The first preset set can include any one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, {0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9}.

[0162] When the first power parameter is used to determine the power scaling factor of the first data, the first power parameter may include the following two implementation forms:

[0163] As an implementation form, the first power parameter is an EPRE corresponding to the reference signal. That is, the EPRE corresponding to the reference signal is determined based on at least one of a bandwidth of the first data, a coding and modulation strategy of the second data, and a carrier frequency of the first data.

[0164] Optionally, sending the first data according to the first power parameter includes: determining a power scaling factor of the first data according to the EPRE, thereby determining the transmit power of the first data, and then sending the first data according to the transmit power of the first data. In other words, the EPRE corresponding to the reference signal is used to determine the transmit power of the first data.

[0165] Exemplarily, the power scaling factor of the first data and the EPRE corresponding to the reference signal satisfy the following relationship (5):

[0166] The power scaling factor is represented by the power scaling factor of the first data, and X is the EPRE corresponding to the reference signal.

[0167] Exemplarily, when the first power parameter is an EPRE corresponding to a reference signal, the first power parameter may be any value in a second preset set. The second preset set may include any one of {0, 3, 4.77, 6, 7, 7.78}, {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, or {0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10}.

[0168] The above only illustrates possible implementation forms of the first preset set and the second preset set, and does not mean that the first preset set and the second preset set only include the above-mentioned implementation forms. In fact, the first preset set and the second preset set may also include other implementation forms in addition to the above-mentioned implementation forms, which will not be elaborated in the embodiments of the present application.

[0169] As another possible implementation, the first power parameter is used to determine the EPRE corresponding to the reference signal.

[0170] Optionally, sending the first data according to the first power parameter includes: determining the EPRE corresponding to the reference signal according to the first power parameter, determining the power scaling factor of the first data according to the EPRE corresponding to the reference signal, and then determining the transmission power of the first data, and sending the first data according to the transmission power of the first data.

[0171] Exemplarily, the first power parameter and the EPRE corresponding to the reference signal satisfy the following relationship (6):

[0172] EPRE corresponding to the reference signal=Y+ρ (6) where Y is the first power parameter, and ρ is the ratio between the EPRE of the reference signal and the EPRE of the PDSCH.

[0173] The power scaling factor of the first data and the first power parameter satisfy the following relationship (7):

[0174] The power scaling factor is represented as the power scaling factor of the first data, Y+ρ is the EPRE corresponding to the reference signal, and Y is the first power parameter.

[0175] The communication method provided by the present application adopts different transmission powers during the data transmission in the high frequency band, and the severity of the phase noise PHN during the transmission process is different. Therefore, the transmitting end device sends the first data by determining the first power parameter based on at least one of the bandwidth of the first data, the coding modulation strategy of the second data, and the carrier frequency of the first data. That is to say, the first power parameter determined in the embodiment of the present application takes into account the influence of factors such as bandwidth, coding modulation strategy, and carrier frequency on the first power parameter. Therefore, it is possible to select a suitable power parameter (i.e., the first power parameter) under different factors such as bandwidth, coding modulation strategy, and carrier frequency. For example, a power parameter that can reduce the severity of PHN (i.e., improve the regularity of PHN) is selected, so that the accuracy of the PHN estimation of the receiving end device is improved, thereby improving the demodulation performance of the data, that is, improving the transmission performance of the data.

[0176] The process of determining the first power parameter mentioned in the above embodiment is described in detail below. Optionally, the transmitting device determines the first power parameter, including: the transmitting device determines a first correspondence, and then determines the first power parameter based on the first correspondence. The first correspondence includes a correspondence between a parameter set and the power parameter. The parameter set includes at least one of bandwidth, coding and modulation strategy, and carrier frequency.

[0177] For example, as shown in FIG11 , step S1001 may be replaced by steps S1101-S1102:

[0178] S1101: The sending end device determines a first corresponding relationship.

[0179] S1102. The transmitting device determines a first power parameter from the first corresponding relationship.

[0180] The following is a detailed description of steps S1101-S1102:

[0181] For step S1101:

[0182] Exemplarily, the transmitting device may determine the first correspondence in the following three ways:

[0183] Method 1: The sending device independently determines the first corresponding relationship.

[0184] Optionally, since the sending end device may be a terminal device or a network device, the first corresponding relationship may be determined by the terminal device or the network device.

[0185] For example, as shown in (a) of FIG12 , step S1101 may be replaced by step S1201:

[0186] S1201. The transmitting end device determines a first corresponding relationship according to at least one of bandwidth, coding modulation strategy, and carrier frequency.

[0187] Exemplarily, the transmitting device may determine power parameters corresponding to different bandwidths, different coding modulation strategies, different carrier frequencies, and other factors based on at least one of the bandwidth, the coding modulation strategy, and the carrier frequency. That is, the first corresponding relationship is determined based on at least one of the bandwidth, the coding modulation strategy, and the carrier frequency.

[0188] Exemplarily, the first correspondence may include the following forms:

[0189] As an example, the parameter set includes bandwidth. That is, the first correspondence includes a correspondence between bandwidth and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data. In this case, the first correspondence may be as shown in Table 6 below:

[0190] Table 6

[0191] In Table 6, B1 to B4 are different from each other, and B1 < B2 < B3 < B4. When the bandwidth B of the first data is less than B1, the first power parameter is A1; when the bandwidth B of the first data is greater than or equal to B1 and less than B2, the first power parameter is A2; and so on, when the bandwidth B of the first data is greater than or equal to B4, the first power parameter is A5.

[0192] As a second example, the parameter set includes bandwidth and carrier frequency. That is, the first correspondence includes the correspondence between bandwidth, carrier frequency, and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data and the carrier frequency of the first data. In this case, the carrier frequency of the first data is not used to determine whether to execute step S1001. The first correspondence may be as shown in Table 7 below:

[0193] Table 7

[0194] Among them, N1~N5 can refer to the relevant description of Table 5 above, and the embodiments of the present application will not be repeated here. B1~B6 are expressed as bandwidth, wherein any bandwidth of B1~B6 can represent a specific bandwidth value. For example, BX (i.e., any bandwidth of B1~B6) can be any one of 100MHz, 200MHz, and 400MHz. Alternatively, any bandwidth of B1~B6 can also represent a bandwidth range. For example, BX (i.e., any bandwidth of B1~B6) can be 100MHz~200MHz. A1~A20 represent the corresponding power parameters under different carrier frequencies and different bandwidths.

[0195] As a third example, the parameter set includes a coding and modulation strategy. That is, the first correspondence includes a correspondence between the coding and modulation strategy and the power parameter. In other words, the first power parameter is determined based on the coding and modulation strategy of the second data. For example, in this case, the coding and modulation strategy includes a modulation mode. In this case, the first correspondence may be as shown in Table 8 below:

[0196] Table 8

[0197] As shown in Table 8, when the modulation mode of the second data is QPSK modulation, the first power parameter is A1; when the modulation mode of the second data is 16QAM, the first power parameter is A2; when the modulation mode of the second data is 64QAM, the first power parameter is A3; when the modulation mode of the second data is 256QAM, the first power parameter is A4...

[0198] Table 8 only lists the modulation methods that may be used for the second data by way of example. In fact, the second data may also use other modulation methods besides the above 8, which is not limited in the embodiments of the present application.

[0199] Optionally, when the modulation and coding strategy includes a code rate, the correspondence between the code rate and the power parameter is similar to the correspondence between the above-mentioned modulation mode and the power parameter, and the embodiments of the present application will not be repeated here.

[0200] As a fourth example, the parameter set includes bandwidth and modulation and coding strategy. That is, the first correspondence includes the correspondence between bandwidth, modulation and coding strategy, and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data and the modulation and coding strategy of the second data. For example, taking the modulation scheme as an example, the first correspondence may be as shown in Table 9 below:

[0201] Table 9

[0202] In Table 9, QPSK, 16QAM, 64QAM, and 256QAM represent different modulation modes, and B3 through B6 represent bandwidths. For modulation modes and bandwidths, refer to the relevant descriptions in Tables 6 through 8 above and are not detailed here. A1 through A16 represent the power parameters corresponding to different modulation modes and bandwidths, respectively.

[0203] As a fifth example, the parameter set includes bandwidth, modulation and coding strategy, and carrier frequency. That is, the first correspondence includes the correspondence between bandwidth, modulation and coding strategy, carrier frequency, and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data, the modulation and coding strategy of the second data, and the carrier frequency of the first data. Taking the example of the coding and modulation strategy including the modulation mode, in this case, the carrier frequency of the first data is not used to determine whether to execute step S1001. The first correspondence may be as shown in Table 10 below:

[0204] Table 10

[0205] In Table 10, N4 and N5 indicate carrier frequencies greater than the first threshold; QPSK, 16QAM, 64QAM, and 256QAM represent different modulation schemes, respectively; and B1 through B4 represent bandwidths. For carrier frequencies, modulation schemes, and bandwidths, refer to the relevant descriptions in Tables 5 through 9 above and are not detailed here. A1 through A32 represent power parameters corresponding to different carrier frequencies, modulation schemes, and bandwidths, respectively.

[0206] Optionally, the first correspondence may also be determined based on the number of PDSCH layers. That is, determining the first correspondence based on at least one of bandwidth, coding and modulation strategy, and carrier frequency includes determining the first correspondence based on at least one of bandwidth, coding and modulation strategy, carrier frequency, and the number of PDSCH layers.

[0207] As a sixth example, the parameter set includes the bandwidth and the number of PDSCH layers. That is, the first correspondence includes the correspondence between the bandwidth, the number of PDSCH layers, and the power parameter. In other words, the first power parameter is determined based on the bandwidth of the first data and the number of PDSCH layers. In this case, the first correspondence can be as shown in Table 11 below:

[0208] Table 11

[0209] In Table 11, B3 to B6 represent bandwidths. For bandwidths, refer to the descriptions in Tables 6 to 7 above and are not detailed here. Layers 1 to 6 represent the number of PDSCH layers, and A1 to A24 represent the power parameters corresponding to different bandwidths and PDSCH layers, respectively.

[0210] As a seventh example, the parameter set includes bandwidth, modulation and coding strategy, and the number of PDSCH layers. That is, the first correspondence includes the correspondence between bandwidth, modulation and coding strategy, the number of PDSCH layers, and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data, the modulation and coding strategy of the second data, and the number of PDSCH layers. Taking the coding and modulation strategy including the modulation mode as an example, in this case, the first correspondence can be as shown in Table 12 below:

[0211] Table 12

[0212] In Table 12, layer 1 and layer 2 represent the number of PDSCH layers; QPSK modulation, 16QAM, 64QAM, and 256QAM represent different modulation modes, respectively; and B3 through B6 represent bandwidths. For modulation modes and bandwidths, refer to the relevant descriptions in Tables 6 through 8 above and are not detailed here. A1 through A32 represent the corresponding power parameters for different PDSCH layers, modulation modes, and bandwidths, respectively.

[0213] As an eighth example, the parameter set includes bandwidth, modulation and coding strategy, number of PDSCH layers, and carrier frequency. That is, the first correspondence includes the correspondence between bandwidth, modulation and coding strategy, number of PDSCH layers, carrier frequency, and power parameters. In other words, the first power parameter is determined based on the bandwidth of the first data, the modulation and coding strategy of the second data, the number of PDSCH layers, and the carrier frequency of the first data. Taking the coding and modulation strategy including the modulation mode as an example, at this time, the carrier frequency of the first data is not used to determine whether to execute step S1001. The first correspondence can be as shown in Table 13 below:

[0214] Table 13

[0215] In Table 13, N4 and N5 indicate carrier frequencies greater than the first threshold; QPSK modulation, 16QAM, 64QAM, and 256QAM represent different modulation schemes, respectively; B3 to B6 represent bandwidths; and layer 1 and layer 2 represent the number of PDSCH layers. The carrier frequency, modulation scheme, bandwidth, and number of PDSCH layers can be found in Tables 5 to 12 above and are not detailed here. A1 to A64 represent power parameters corresponding to different carrier frequencies, modulation schemes, bandwidths, and PDSCH layers.

[0216] It should be noted that the above only lists 8 possible first correspondences by way of example. According to the above, in the first correspondence, the parameter set may include at least one of bandwidth, carrier frequency, modulation and coding strategy, and the number of PDSCH layers. Therefore, there are 15 possible implementations of the first correspondence. Among the 15 possible implementations, in addition to the above 8 examples, the remaining 7 possible implementations can be obtained by combining, splitting, etc. the above 8 examples. The principle of determining the first correspondence in the 7 possible implementations is similar to the principle described in any one of Tables 6 to 13 above, and the embodiments of the present application will not be repeated here.

[0217] In addition, the above Tables 6 to 13 all take the coding modulation strategy including the modulation mode as an example. In fact, the coding modulation strategy can also include the code rate. The method of determining the first corresponding relationship through the code rate is similar to the method of determining the first corresponding relationship through the modulation mode. The embodiments of the present application will not be repeated here.

[0218] Tables 6 to 13 above are described using the example that each parameter set corresponds to one power parameter. In practice, each parameter set may also correspond to multiple power parameters (i.e., a power parameter range). That is, the transmitting end device determines the first power parameter, including: the transmitting end device determines the multiple power parameters based on at least one of the bandwidth, the coding and modulation strategy, the carrier frequency, and the number of PDSCH layers, wherein the multiple power parameters include the first power parameter.

[0219] For example, taking the parameter set including bandwidth, that is, the first correspondence including the correspondence between bandwidth and power parameters as an example, the first correspondence may include the content shown in Table 14 below:

[0220] Table 14

[0221] In Table 14, B1 to B4 are mutually exclusive, and B1 < B2 < B3 < B4. A1 to A7 represent power parameters. When the bandwidth B of the first data is less than B1, the first power parameter is A1; when the bandwidth B of the first data is greater than or equal to B1 and less than B2, the first power parameter is A; and so on. When the bandwidth B of the first data is greater than or equal to B4, the first power parameter is A7. When the bandwidth B of the first data is greater than or equal to B1 and less than B2, and when the bandwidth B of the first data is greater than or equal to B3 and less than B4, the bandwidth of the first data corresponds to a power parameter range. That is, when the bandwidth B of the first data is greater than or equal to B1 and less than B2, the transmitting device can determine multiple power parameters A2 to A3 based on the bandwidth of the first data. When the bandwidth B of the first data is greater than or equal to B3 and less than B4, the transmitting device can determine multiple power parameters A5 to A6 based on the bandwidth of the first data.

[0222] It should be noted that the above Table 14 only takes the parameter set including bandwidth as an example to introduce the situation where a parameter set corresponds to multiple power parameters (i.e., a power parameter range) in the first correspondence. In other schemes where the parameter set includes at least one of bandwidth, carrier frequency, modulation and coding strategy, and the number of PDSCH layers, except that the parameter set includes bandwidth, a parameter set in the first correspondence may also correspond to multiple power parameters (i.e., a power parameter range), that is, AX (i.e., A1, A2, A3...) in the above Tables 7 to 13 can be replaced with AX~AY (for example, A2~A3, etc., representing a power parameter range, or multiple power parameters). The embodiments of the present application will not be repeated here.

[0223] The above description is only an example of the first correspondence in the form of a table, which does not mean that the first correspondence only includes the form of a table. In fact, the first correspondence can also include other forms such as sets. It only needs to be able to express the correspondence between the parameter set and the power parameter. The embodiments of the present application are not limited here.

[0224] Mode 2: The first corresponding relationship is determined by the receiving device and notified to the sending device.

[0225] Optionally, since the transmitting device can be a terminal device or a network device, the receiving device can be a network device or a terminal device accordingly. Therefore, the first correspondence can be determined by the terminal device and notified to the network device, or determined by the network device and notified to the terminal device.

[0226] For example, as shown in (b) of FIG12 , step S1101 may be replaced by steps S1202-S1203:

[0227] S1202: The receiving device determines a first corresponding relationship according to at least one of bandwidth, coding modulation strategy, and carrier frequency.

[0228] Exemplarily, the process of the receiving device determining the first corresponding relationship can refer to the relevant description of step S1201 of the above-mentioned method 1, and will not be repeated here in this embodiment of the present application.

[0229] S1203: The receiving device sends first indication information to the transmitting device. Correspondingly, the transmitting device receives the first indication information from the receiving device.

[0230] Exemplarily, when the transmitting device is a terminal device and the receiving device is a network device, the first indication information may be carried in at least one of radio resource control (RRC) signaling, media access control (MAC) layer control element (MAC-CE) signaling, and downlink control information (DCI). When the transmitting device is a network device and the receiving device is a terminal device, the first indication information may be carried in at least one of RRC signaling and MAC-CE signaling.

[0231] Method 3: The first correspondence is predefined by the protocol. For example, the protocol may predefine the first correspondence to be determined based on at least one of bandwidth, coding and modulation strategy, and carrier frequency. For example, the protocol may predefine the first correspondence to be any one of Tables 6 to 14 above.

[0232] Optionally, in the above-mentioned methods 1 to 3, the power parameter in the first correspondence may be the transmit power, or the power parameter in the first correspondence is used to determine the transmit power. Exemplarily, the power parameter in the first correspondence may be any one of a power scaling factor and an EPRE, or the power parameter in the first correspondence may be used to determine the EPRE. The specific implementation of the power parameter in the first correspondence may refer to the relevant description of the specific implementation of the first power parameter above, and will not be repeated herein in the embodiments of the present application.

[0233] Exemplarily, when the power parameter in the first corresponding relationship is one or more values ​​in the first preset set or the second preset set, the transmitting device or the receiving device can determine the size relationship between the various power parameters in the cases of different bandwidths, different coding modulation strategies, and at least one of different carrier frequencies based on at least one of the bandwidth, coding modulation strategy, and carrier frequency, and then determine the various power parameters from the first preset set or the second preset set based on the size relationship.

[0234] Alternatively, the transmitting device or the receiving device can determine, based on at least one of the bandwidth, coding modulation strategy, and carrier frequency, the relationship between the power corresponding to each power parameter and the power of the reference signal configured according to the EPRE-ratio and the number of PDSCH layers in the case of different bandwidths, different coding modulation strategies, and different carrier frequencies, and then determine each power parameter from the first preset set or the second preset set based on the relationship.

[0235] For step S1102:

[0236] Exemplarily, step S1102 can be implemented based on the following two situations:

[0237] Case 1: In the first corresponding relationship, each parameter set corresponds to a power parameter.

[0238] Optionally, in the following situation, the transmitting device may determine the power parameter corresponding to the first parameter set in the first correspondence as the first power parameter. The first parameter set includes at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data. In other words, the first power parameter is the power parameter corresponding to the first parameter set in the first correspondence.

[0239] Exemplarily, the first corresponding relationship is as shown in Table 6, that is, the first parameter set includes the bandwidth of the first data, and the bandwidth B of the first data is smaller than B1. For example, the first power parameter is A1.

[0240] Case 2: In the first correspondence, each parameter set corresponds to multiple power parameters (ie, a power parameter range).

[0241] Optionally, in case 2, the transmitting end device may first determine multiple parameter sets corresponding to the first parameter set from the first corresponding relationship, and then determine a power parameter from the multiple power parameters as the first power parameter.

[0242] Optionally, after step S1101 (such as after step S1201, or after steps S1202-S1203), as shown in (a) and (b) of FIG13 , step S1102 may include the following steps S1301-S1302, that is, step S1102 may be replaced by steps S1301-S1302:

[0243] S1301. The transmitting end device determines multiple power parameters corresponding to the first parameter set from the first corresponding relationship. Exemplarily, the process of the transmitting end device determining the multiple power parameters corresponding to the first parameter set from the first corresponding relationship is similar to the process of the transmitting end device determining the first power parameter from the first corresponding relationship in the second case. For details, refer to the description of the transmitting end device determining the first power parameter from the first corresponding relationship in the second case, and this embodiment of the present application will not be repeated here.

[0244] S1302. The transmitting device determines a first power parameter from multiple power parameters.

[0245] Optionally, the process of the transmitting end device determining the first power parameter from multiple power parameters may include the following two possible implementations:

[0246] In a possible implementation, when the transmitting end device is a terminal device or a network device, the transmitting end device may determine any one of multiple power parameters as the first power parameter.

[0247] For example, taking the case where the transmitting device determines multiple power parameters A2 to A3 from the first correspondence according to at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, the carrier frequency of the first data, and the number of PDSCH layers, and the power parameters included in A2 to A3 are: A1, A1.1, A1.2, A1.3…, A1.9, A2, the transmitting device can determine any one of the power parameters A2 to A3 as the first power parameter.

[0248] In another possible implementation, when the transmitting device is a terminal device and the receiving device is a network device, the transmitting device may determine the first power parameter based on second indication information from the receiving device. The second indication information indicates the first power parameter. In other words, step S1302 includes: the transmitting device determining the first power parameter from multiple power parameters based on the second indication information.

[0249] Optionally, as shown in (a) and (b) of FIG14 , before step S1302 , the communication method may further include step S1303 :

[0250] S1303: The receiving device sends second indication information to the transmitting device. Correspondingly, the transmitting device receives the second indication information from the receiving device.

[0251] Exemplarily, the second indication information may indicate the Mth power parameter among multiple power parameters, indicating that the first power parameter is the Mth power parameter. Wherein M is a positive integer. For example, taking the multiple power parameters including A1, A1.1, A1.2, A1.3…, A1.9, A2, and M being 2 as an example, the second indication information indicates that A1.1 is the first power parameter. Alternatively, the second indication information indicates that the first power parameter is the power parameter corresponding to the index by indicating the Mth power parameter. For example, taking the multiple power parameters including A1, A1.1, A1.2, A1.3…, A1.9, A2, the Mth power parameter is A1.1, and the index of A1.1 is 2 as an example, the second indication information may include 2 bits, which represent the index of the first power parameter. At this time, since the power parameter corresponding to index 2 is A1.1, the first power parameter is A1.1.

[0252] Optionally, the second indication information may be carried in at least one of RRC signaling, MAC-CE signaling, and DCI.

[0253] Optionally, in the second embodiment (i.e., the first correspondence is determined autonomously by the transmitting device), as shown in (a) of FIG13 , before step S1303 , the communication method may further include step S1304 :

[0254] S1304: The transmitting end device sends third indication information to the terminal device. Correspondingly, the receiving end device receives the third indication information from the transmitting end device, wherein the third indication information indicates the first corresponding relationship.

[0255] Exemplarily, the third indication information may be carried in at least one of RRC signaling and MAC-CE signaling.

[0256] It should be noted that there is no clear order between step S1301 and steps S1303-S1304, that is, step S1301 can be executed before step S1303-S1304, or step S1301 can be executed after step S1303-S1304, or step S1301 can be executed simultaneously with steps S1303-S1304, and this embodiment of the present application does not limit this.

[0257] It can be understood that in each of the above embodiments, the methods and / or steps implemented by the receiving device can also be implemented by components that can be used for the receiving device (such as a processor, chip, chip system, circuit, logic module, or software such as a chip or circuit); the methods and / or steps implemented by the sending device can also be implemented by components that can be used for the sending device (such as a processor, chip, chip system, circuit, logic module, or software such as a chip or circuit).

[0258] The above mainly introduces the solutions provided by this application. Accordingly, this application also provides a communication device, which is used to implement the various methods described above. The communication device can be the transmitting device in the above method embodiments, or a device including the above transmitting device, or a component that can be used for the transmitting device, such as a chip or chip system; or the communication device can be the receiving device in the above method embodiments, or a device including the above receiving device, or a component that can be used for the receiving device, such as a chip or chip system.

[0259] It is understandable that, in order to realize the above functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0260] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. 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 in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0261] 15 shows a schematic structural diagram of a communication device 150. The communication device 150 includes a processing module 1501 and a transceiver module 1502. The communication device 150 can be used to implement the functions of the above-mentioned transmitting end device or receiving end device.

[0262] In some embodiments, the communication device 150 may further include a storage module (not shown in FIG. 15 ) for storing program instructions and data.

[0263] In some embodiments, the transceiver module 1502, which may also be referred to as a transceiver unit, is configured to implement a transmitting and / or receiving function. The transceiver module 1502 may be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.

[0264] In some embodiments, the transceiver module 1502 may include a receiving module and a sending module, which are respectively used to execute the receiving and sending steps performed by the sending device or the receiving device in the above method embodiments, and / or used to support other processes of the technology described in this document; the processing module 1501 may be used to execute the processing steps (such as determination, generation, etc.) performed by the sending device or the receiving device in the above method embodiments, and / or used to support other processes of the technology described in this document.

[0265] When the communication device 150 is used to implement the functions of the above-mentioned transmitting end device:

[0266] In some embodiments, the processing module 1501 is used to determine a first power parameter, which is determined based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data. The first data includes the second data and a reference signal, and the coding and modulation strategy includes at least one of the modulation mode of the second data and the code rate of the second data. The transceiver module 1502 is used to send the first data according to the first power parameter.

[0267] Optionally, the processing module 1501 is further used to determine multiple power parameters according to at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data, where the multiple power parameters include the first power parameter.

[0268] Optionally, the transceiver module 1502 is further configured to receive second indication information, where the second indication information indicates the first power parameter.

[0269] Optionally, the transceiver module 1502 is further configured to receive first indication information, where the first indication information indicates a first corresponding relationship; and the processing module 1501 is further configured to determine a first power parameter according to the first corresponding relationship.

[0270] Optionally, the processing module 1501 is further configured to determine a first corresponding relationship, and determine a first power parameter from the first corresponding relationship.

[0271] When the communication device 150 is used to implement the functions of the above-mentioned receiving device:

[0272] In some embodiments, the processing module 1501 is used to determine a first power parameter based on at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data, where the first data includes the second data and a reference signal, and the coding and modulation strategy includes at least one of the modulation mode of the second data and the code rate of the second data; the transceiver module 1502 is used to send second indication information, where the second indication information indicates the first power parameter.

[0273] Optionally, the processing module 1501 is further used to determine multiple power parameters according to at least one of the bandwidth of the first data, the coding and modulation strategy of the second data, and the carrier frequency of the first data, where the multiple power parameters include the first power parameter.

[0274] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0275] In the present application, the communication device 150 may be presented in the form of functional modules divided in an integrated manner. The "module" here may refer to a specific application-specific integrated circuit (ASIC), a circuit, a processor and memory that executes one or more software or firmware programs, an integrated logic circuit, and / or other devices that can provide the above functions.

[0276] In some embodiments, when the communication device 150 in Figure 15 is a chip or a chip system, the function / implementation process of the transceiver module 1502 can be implemented through the input and output interface (or communication interface) of the chip or chip system, and the function / implementation process of the processing module 1501 can be implemented through the processor (or processing circuit) of the chip or chip system.

[0277] Since the communication device 150 provided in this embodiment can execute the above method, the technical effects that can be obtained can refer to the above method embodiments and will not be repeated here.

[0278] As a possible product form, the transmitting device or receiving device described in the embodiments of the present application can also be implemented using the following: one or more field programmable gate arrays (FPGAs), programmable logic devices (PLDs), controllers, state machines, gate logic, discrete hardware components, any other suitable circuits, or any combination of circuits that can perform the various functions described throughout this application.

[0279] As another possible product form, the transmitting device or receiving device of the embodiment of the present application can be implemented by a general bus architecture. For ease of explanation, refer to Figure 16, which is a structural diagram of a communication device 160 provided in an embodiment of the present application, wherein the communication device 160 includes a processor 1601 and a transceiver 1602. The communication device 160 can be a transmitting device, or a chip or chip system therein; or, the communication device 160 can be a receiving device, or a chip or module therein. Figure 16 only shows the main components of the communication device 160. In addition to the processor 1601 and the transceiver 1602, the communication device may further include a memory 1603, and an input and output device (not shown in Figure 16).

[0280] Optionally, processor 1601 is primarily used to process communication protocols and communication data, as well as control the entire communication device, execute software programs, and process software program data. Memory 1603 is primarily used to store software programs and data. Transceiver 1602 may include a radio frequency circuit and an antenna. The radio frequency circuit is primarily used to convert baseband signals into radio frequency signals and process radio frequency signals. The antenna is primarily used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as a touch screen, display, and keyboard, are primarily used to receive user input and output data to the user.

[0281] Optionally, the processor 1601 , the transceiver 1602 , and the memory 1603 may be connected via a communication bus.

[0282] When the communication device is powered on, the processor 1601 can read the software program in the memory 1603, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1601 performs baseband processing on the data to be sent and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1601. The processor 1601 converts the baseband signal into data and processes the data.

[0283] In another implementation, the RF circuit and antenna may be provided independently of the processor performing baseband processing. For example, in a distributed scenario, the RF circuit and antenna may be remotely arranged independent of the communication device.

[0284] In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the above-mentioned communication device 150 may take the form of the communication device 160 shown in FIG. 16 .

[0285] As an example, the functions / implementation process of the processing module 1501 in FIG15 can be implemented by the processor 1601 in the communication device 160 shown in FIG16 calling the computer-executable instructions stored in the memory 1603. The functions / implementation process of the transceiver module 1502 in FIG15 can be implemented by the transceiver 1602 in the communication device 160 shown in FIG16.

[0286] As another possible product form, the transmitting device or receiving device in this application may adopt the structure shown in Figure 17, or include the components shown in Figure 17. Figure 17 is a schematic diagram of the structure of a communication device 170 provided in this application. The communication device 170 can be a transmitting device or a chip or system-on-chip in the transmitting device; or it can be a receiving device or a module, chip, or system-on-chip in the receiving device.

[0287] As shown in FIG17 , the communication device 170 includes at least one processor 1701 and at least one communication interface ( FIG17 is merely an example of one communication interface 1704 and one processor 1701). Optionally, the communication device 170 may further include a communication bus 1702 and a memory 1703.

[0288] Processor 1701 can be a general-purpose central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Processor 1401 can also be other devices with processing capabilities, such as circuits, devices, or software modules, without limitation.

[0289] Communication bus 1402 is used to connect the various components in communication device 140, enabling communication between them. Communication bus 1402 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, for example. This bus can be categorized as an address bus, a data bus, a control bus, and so on. For ease of illustration, FIG17 shows a single thick line, but this does not imply that there is only one bus or type of bus.

[0290] Communication interface 1704 is used to communicate with other devices or communication networks. Exemplarily, communication interface 1704 can be a module, circuit, transceiver, or any other device capable of communication. Optionally, communication interface 1704 can also be an input / output interface within processor 1701, used to implement signal input and output to the processor.

[0291] The memory 1703 may be a device with a storage function, used to store instructions and / or data, wherein the instructions may be computer programs.

[0292] Exemplarily, the memory 1703 may be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or 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 compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0293] It should be noted that the memory 1703 can exist independently of the processor 1701 or can be integrated with the processor 1701. The memory 1703 can be located within the communication device 170 or outside the communication device 170, without limitation. The processor 1701 can be used to execute instructions stored in the memory 1703 to implement the methods provided in the following embodiments of the present application.

[0294] As an optional implementation, the communication device 170 may further include an output device 1705 and an input device 1706. The output device 1705 communicates with the processor 1701 and can display information in a variety of ways. For example, the output device 1705 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 1706 communicates with the processor 1701 and can receive user input in a variety of ways. For example, the input device 1706 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0295] In some embodiments, in terms of hardware implementation, those skilled in the art may conceive that the above-mentioned communication device 150 may take the form of the communication device 170 shown in FIG. 17 .

[0296] As an example, the functions / implementation process of the processing module 1501 in FIG15 can be implemented by the processor 1701 in the communication device 170 shown in FIG17 calling the computer-executable instructions stored in the memory 1703. The functions / implementation process of the transceiver module 1502 in FIG15 can be implemented by the communication interface 1704 in the communication device 170 shown in FIG17.

[0297] It should be noted that the structure shown in FIG17 does not constitute a specific limitation on the transmitting device or the receiving device. For example, in other embodiments of the present application, the transmitting device or the receiving device may include more or fewer components than shown in the figure, or some components may be combined or separated, or the components may be arranged differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0298] In some embodiments, an embodiment of the present application further provides a communication device, which includes a processor for implementing the method in any of the above method embodiments.

[0299] As a possible implementation, the communication device further includes a memory. The memory is used to store necessary computer programs and data. The computer program may include instructions, and the processor may invoke the instructions in the computer program stored in the memory to instruct the communication device to perform any of the above-described method embodiments. Of course, the memory may not be located in the communication device.

[0300] As another possible implementation, the communication device also includes an interface circuit, which is a code / data read / write interface circuit, and the interface circuit is used to receive computer execution instructions (computer execution instructions are stored in a memory, may be read directly from the memory, or may pass through other devices) and transmit them to the processor.

[0301] As another possible implementation, the communication device further includes a communication interface, where the communication interface is used to communicate with a module outside the communication device.

[0302] It can be understood that the communication device can be a chip or a chip system. When the communication device is a chip system, it can be composed of chips or include chips and other discrete devices. The embodiments of the present application do not specifically limit this.

[0303] The present application also provides a computer-readable storage medium having a computer program or instruction stored thereon, which implements the functions of any of the above method embodiments when executed by a computer.

[0304] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0305] Those skilled in the art will appreciate that, for the sake of convenience and brevity of description, the specific working processes of the above-described systems, devices, and units may refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0306] It is understood that the systems, devices, and methods described in this application may also be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the 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 system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be through some interface, indirect coupling or communication connection of devices or units, and may be electrical, mechanical, or other forms.

[0307] The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Components shown as units may or may not be physical units. Some or all of these units may be selected to achieve the objectives of this embodiment as needed.

[0308] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0309] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)). In the embodiment of the present application, the computer may include the aforementioned device.

[0310] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and implement other changes to the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0311] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the scope of the present application. Thus, the present application is intended to include such modifications and variations if they fall within the scope of the claims of the present application and their equivalents.

Claims

1. A communication method, characterized in that: The method comprises: determining a first power parameter, where the first power parameter is determined according to at least one of a bandwidth of first data, a coding modulation strategy of second data, and a carrier frequency of the first data, where the first data includes the second data and a reference signal, and the coding modulation strategy includes at least one of a modulation mode of the second data and a code rate of the second data; The first data is sent according to the first power parameter.

2. The method according to claim 1, characterized in that The determining of the first power parameter comprises: According to at least one of the bandwidth, the coding modulation strategy, and the carrier frequency, a plurality of power parameters are determined, and the plurality of power parameters include the first power parameter.

3. The method according to claim 2, characterized in that The method further comprises: Second indication information is received, where the second indication information indicates the first power parameter.

4. The method according to claim 3, characterized in that The second indication information is carried in at least one of radio resource control RRC signaling, media access control layer control element MAC-CE signaling, and downlink control information DCI.

5. The method according to any one of claims 1 to 4, characterized in that: The first power parameter is the transmission power of the first data; or, The first power parameter is the energy EPRE of a unit resource element corresponding to a reference signal, or the first power parameter is used to determine the EPRE, and the EPRE is used to determine the transmission power of the first data.

6. The method according to claim 5, characterized in that When the first power parameter is EPRE, or the first power parameter is used to determine the EPRE, the transmission power of the first data is the product of a power scaling factor of the first data and a symbol value of a preset layer constellation point of a constellation diagram corresponding to the modulation mode, and the power scaling factor is determined based on the first power parameter.

7. The method according to any one of claims 1 to 6, characterized in that The carrier frequency is greater than a first threshold.

8. The method according to any one of claims 1 to 6, characterized in that The determining of the first power parameter comprises: In a case where the terminal device supports configuration of the power parameter of the first data, the first power parameter is determined.

9. The method according to any one of claims 1 to 8, characterized in that The first power parameter is a power parameter corresponding to a first parameter set in a first corresponding relationship, the first parameter set includes at least one of the bandwidth, the coding modulation strategy, and the carrier frequency, and the first corresponding relationship includes a corresponding relationship between the parameter set and the power parameter; The determining of the first power parameter comprises: receiving first indication information, where the first indication information indicates the first corresponding relationship; Determine the first power parameter according to the first corresponding relationship; or, The determining of the first power parameter comprises: Determine the first corresponding relationship, and determine the first power parameter from the first corresponding relationship; or, The first corresponding relationship is defined by a protocol.

10. A communication method, characterized in that: The method comprises: (receiving end: not distinguishing between terminal and base station) determining a first power parameter according to at least one of a bandwidth of first data, a coding modulation strategy of second data, and a carrier frequency of the first data, wherein the first data includes the second data and a reference signal, and the coding modulation strategy includes at least one of a modulation mode of the second data and a code rate of the second data; Send second indication information, where the second indication information indicates the first power parameter.

11. The method according to claim 10, characterized in that The determining the first power parameter according to at least one of a bandwidth of the first data, a coding and modulation strategy of the second data, and a carrier frequency of the first data includes: According to at least one of the bandwidth, the coding modulation strategy, and the carrier frequency, a plurality of power parameters are determined, and the plurality of power parameters include the first power parameter.

12. The method according to claim 10 or 11, characterized in that: The second indication information is carried in at least one of radio resource control RRC signaling, media access control layer control element MAC-CE signaling, and downlink control information DCI.

13. The method according to any one of claims 10 to 12, characterized in that: The first power parameter is the transmission power of the first data.

14. The method according to any one of claims 10 to 12, characterized in that: The first power parameter is the energy EPRE of a unit resource element corresponding to the reference signal, or the first power parameter is used to determine the EPRE, and the EPRE is used to determine the transmission power.

15. The method according to any one of claims 10 to 14, characterized in that: The carrier frequency is greater than a first threshold.

16. The method according to any one of claims 10 to 14, characterized in that: The determining of the first power parameter comprises: In a case where the terminal device supports configuration of the power parameter of the first data, the first power parameter is determined.

17. The method according to any one of claims 10 to 16, characterized in that: The first power parameter is a power parameter corresponding to a first parameter set in a first corresponding relationship, the first parameter set includes at least one of the bandwidth, the coding modulation strategy, and the carrier frequency, and the first corresponding relationship includes a corresponding relationship between the parameter set and the power parameter.

18. A communication device, characterized in that: The communication device includes a transceiver module and a processing module. The processing module is used to perform the processing behavior in the method according to any one of claims 1 to 9, or is used to perform the processing behavior in the method according to any one of claims 10 to 17; The transceiver module is used to perform the receiving behavior or the sending behavior in the method according to any one of claims 1-9, or to perform the receiving behavior or the sending behavior in the method according to any one of claims 10-17.

19. A communication device, characterized in that: The communication device includes a processor; the processor is used to run a computer program or instructions so that the communication device executes the method as described in any one of claims 1-9, or is used to run a computer program or instructions so that the communication device executes the method as described in any one of claims 10-17.

20. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are executed on a computer, the method according to any one of claims 1 to 9 is executed, or the method according to any one of claims 10 to 17 is executed.

21. A computer program product, characterized in that When the computer program product is executed on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 9, or the communication device is caused to execute the method according to any one of claims 10 to 17.

22. A chip, 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 chip executes the method as described in any one of claims 1-9, or the chip executes the method as described in any one of claims 10-17.

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