CN115632739A - Wireless communication frame generation method and device, electronic equipment and storage medium - Google Patents

Abstract

The application provides a method and a device for generating a wireless communication frame, an electronic device and a storage medium, and relates to the technical field of wireless communication, wherein the method comprises the following steps: constructing a leading training sequence, wherein the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak value average power ratio of the leading training sequence is lower than the first peak value average power ratio; constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol; and splicing the preamble training sequence and the signaling data sequence according to the sequence to generate a wireless communication frame. The wireless communication frame of the application can enable the wireless communication system to work under the condition of lower signal to noise ratio, and can carry out point-to-point communication at a longer distance in an area lacking cellular network coverage.

Description

Method, device, electronic device and storage medium for generating wireless communication frame

technical field

The present application relates to the technical field of wireless communication, and in particular to a method, device, electronic device and storage medium for generating a wireless communication frame.

Background technique

At present, terminal devices (such as smart phones) generally use cellular network technology to ensure wireless coverage of communication, and also support WiFi technology to achieve high-throughput, low-cost wireless communication within the coverage of wireless hotspots. Cellular network technology and WiFi technology have their own advantages and disadvantages, and they complement each other, covering most of the application scenarios in life.

However, in areas without network coverage, cellular network technology cannot work. Although WIFI technology can perform point-to-point communication, the communication distance is limited.

Therefore, the deficiencies of the prior art are: due to the defect of small coverage in WIFI technology (such as the typical coverage radius of 802.11n outdoors is generally about 250 meters), terminal equipment in areas lacking cellular network coverage cannot directly perform longer distance peer-to-peer communication.

Contents of the invention

The present application provides a method, device, electronic device and storage medium for generating a wireless communication frame to solve the defect in the prior art that terminal equipment cannot directly perform longer-distance point-to-point communication in areas lacking cellular network coverage. The wireless communication frame can make the wireless communication system work at a lower signal-to-noise ratio, and enable longer-distance point-to-point communication in areas lacking cellular network coverage.

The present application provides a method for generating a wireless communication frame, including:

Constructing a leading training sequence, the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the leading training sequence is lower than the first peak-to-average power ratio;

constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol;

Splicing the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

According to a method for generating a wireless communication frame provided by the present application, the construction of a preamble training sequence includes:

Splicing the cyclic prefix, the first ZC sequence of the first quantity, and the second ZC sequence in sequence to construct a leading training sequence;

Wherein, the first ZC sequence of the first number is the same, the phase difference between the second ZC sequence and the first ZC sequence is π, and the cyclic prefix includes the last preset number of samples in the first ZC sequence point.

According to a method for generating a wireless communication frame provided by the present application, the constructing a signaling data sequence includes:

Splicing the second number of signaling symbols and the third number of data symbols in order to construct a signaling data sequence.

According to a method for generating a wireless communication frame provided by the present application, the constructing a signaling data sequence includes:

Splicing the second number of signaling symbols and the third number of data symbols in sequence, and inserting an intermediate training sequence every fourth number of data symbols to construct a signaling data sequence;

Wherein, the autocorrelation of the intermediate training sequence is greater than the second autocorrelation, and the peak-to-average power ratio of the intermediate training sequence is lower than the second peak-to-average power ratio; the fourth quantity is negatively correlated with the channel change speed.

According to a method for generating a wireless communication frame provided by the present application, the intermediate training sequence is constructed through the following steps:

Splicing the cyclic prefix and the fifth number of first ZC sequences in sequence to construct an intermediate training sequence;

Wherein, the cyclic prefix includes the last preset number of sampling points in the first ZC sequence.

According to a method for generating a wireless communication frame provided in the present application, both the length of the preamble training sequence and the length of the intermediate training sequence are negatively correlated with a signal-to-noise ratio.

According to a method for generating a wireless communication frame provided in the present application, the subcarrier mapping structure of the signaling symbol or the data symbol includes: a sixth number of data subcarriers and a seventh number of pilot subcarriers;

The power factors of the data subcarriers and the pilot subcarriers meet the following conditions:

The ratio between the sum of the first product and the second product and the sum of the sixth number and the seventh number is 1, the first product is the square of the power factor of the data subcarrier and the The product of the sixth number, the second product is the product of the square of the power factor of the pilot subcarrier and the seventh number.

The present application also provides a device for generating a wireless communication frame, including:

The first construction module is used to construct a preamble training sequence, the autocorrelation of the preamble training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio;

A second construction module, configured to construct a signaling data sequence, where the signaling data sequence includes: a signaling symbol and a data symbol, where the data symbol is located after the signaling symbol;

A generating module, configured to splice the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

The present application also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the computer program, it realizes the wireless Steps of a method for generating a communication frame.

The present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for generating a wireless communication frame as described in any one of the foregoing are implemented.

The generation method, device, electronic equipment and storage medium of the wireless communication frame provided by the present application, first, construct the preamble training sequence, the autocorrelation of the preamble training sequence is greater than the first autocorrelation, the peak-to-average power ratio of the preamble training sequence is lower than The first peak-to-average power ratio; then, construct the signaling data sequence, the signaling data sequence includes: signaling symbols and data symbols, and the data symbols are located after the signaling symbols; finally, the preamble training sequence and the signaling data sequence are in order Perform splicing to generate wireless communication frames. Since the autocorrelation of the preamble training sequence is greater than the first autocorrelation, the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio, that is, the preamble training sequence has a strong autocorrelation Such a wireless communication frame can make the wireless communication system work at a lower signal-to-noise ratio, and enable longer-distance point-to-point communication in areas lacking cellular network coverage.

Description of drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

FIG. 1 is a schematic flowchart of a method for generating a wireless communication frame provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a preamble training sequence provided by an embodiment of the present application;

Fig. 3 is one of the schematic diagrams of the signaling data sequence provided by the embodiment of the present application;

Fig. 4 is the second schematic diagram of the signaling data sequence provided by the embodiment of the present application;

FIG. 5 is a schematic diagram of an intermediate training sequence provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a frame structure of a wireless communication frame provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a device for generating a wireless communication frame provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings in this application. Obviously, the described embodiments are part of the embodiments of this application , but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The method for generating a wireless communication frame of the present application is described below with reference to FIG. 1 to FIG. 6 .

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of a method for generating a wireless communication frame provided by an embodiment of the present application. As shown in Figure 1, the method may include the following steps:

Step 101, constructing a preamble training sequence, the autocorrelation of the preamble training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio;

Step 102, constructing a signaling data sequence, the signaling data sequence includes: a signaling symbol and a data symbol, and the data symbol is located after the signaling symbol;

Step 103: Concatenate the preamble training sequence and the signaling data sequence in order to generate a wireless communication frame.

In step 101, the first autocorrelation is a preset autocorrelation threshold, and if the autocorrelation is greater than the first autocorrelation, it means that the autocorrelation is stronger. The first peak-to-average power ratio is a preset peak-to-average power ratio threshold, and if the peak-to-average power ratio is lower than the first peak-to-average power ratio, it means that the peak-to-average power is low.

A preamble training sequence is constructed by using a sequence whose autocorrelation is greater than the first autocorrelation and whose peak-to-average power ratio (PAPR, Peak to Average Power Ratio) is lower than the first peak-to-average power ratio. That is, the preamble training sequence has stronger autocorrelation and lower peak-to-average power.

In step 102, a signaling data sequence is constructed by using signaling symbols and data symbols. In the signaling data sequence, the data symbols follow the signaling symbols.

In step 103, the wireless communication frame is a complete communication unit in the physical layer of the communication protocol.

In a wireless communication frame, the sequence of the preamble training sequence and the signaling data sequence is: the preamble training sequence is located before the signaling symbol, and the signaling symbol is located before the data symbol. The preamble training sequence and the signaling data sequence are spliced in order to generate a wireless communication frame.

In this embodiment, since the autocorrelation of the preamble training sequence is greater than the first autocorrelation, the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio, that is, the preamble training sequence has strong autocorrelation and With lower peak and average power, such a wireless communication frame can enable the wireless communication system to work at a lower signal-to-noise ratio, enabling longer-distance point-to-point communication in areas lacking cellular network coverage.

Optionally, step 101 includes: splicing the cyclic prefix, the first ZC (Zaddoff Chu) sequence of the first quantity, and the second ZC sequence in order to construct a leading training sequence; wherein, the first ZC of the first quantity The sequences are the same, the phase difference between the second ZC sequence and the first ZC sequence is π, and the cyclic prefix includes the last preset number of sampling points in the first ZC sequence.

The wireless communication frame in this embodiment is mainly used in low signal-to-noise scenarios, and thus is more suitable for narrow bandwidth systems. The preamble training sequence is described below by taking a 2MHz system bandwidth as an example.

As shown in FIG. 2 , the preamble training sequence (preamble) includes: a cyclic prefix (ie, CP), a first number of first ZC sequences, and a second ZC sequence. Wherein, the first number may be 12, the present embodiment is not limited thereto, the 12 first ZC sequences (ie ZC1, ZC2, ZA3, ..., ZC12) are identical, the second ZC sequence (ie ZC13) is identical to the first ZC sequence The sequences are out of phase by π. Both the length of the first ZC sequence and the length of the second ZC sequence are 64 points, and the cyclic prefix includes the last 16 sampling points in the first ZC sequence.

Taking the 2MHz system bandwidth as an example, the length of each sampling point is 500ns, the symbol length of the first ZC sequence and the second ZC sequence are both 32μs, the symbol length of the cyclic prefix is 8μs, and the length of the entire preamble training sequence is 8μs+ 32μs*12+32μs=424μs.

It should be noted that this embodiment is not limited to the 2MHz system bandwidth, and in actual scenarios, the system bandwidth can be flexibly modulated according to the data rate to be carried by the system.

In this embodiment, since the modulus value of the ZC sequence is constant (PAPR=0dB), the transmission power of the preamble training sequence can be increased by 3dB compared with the transmission power of the data/signaling symbol without increasing the cost of the power amplifier device, so that The system can work at a lower signal-to-noise ratio.

In one embodiment, step 102 includes: splicing the second number of signaling symbols and the third number of data symbols in order to construct a signaling data sequence.

As shown in Figure 3, the signaling data sequence includes: a second number of signaling symbols and a third number of data symbols, SIG represents a signaling symbol, Data represents a data symbol, the second number can be 4, and the third number can be 31×N, where N is a positive integer, and this embodiment is not limited thereto.

Taking the 2MHz system bandwidth as an example, the length of each sampling point is 500ns, and each data/signaling symbol consists of a 16-point cyclic prefix and a 64-point Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) Composed of symbols, the duration of 4 signaling symbols is (16+64)×4×500 ns=160 μs. The data symbol is sent after the end of the signaling symbol, and the supported length is 31*N symbols. In a low mobility scenario, all data symbols are sent sequentially until all symbols are sent.

In this embodiment, the second number of signaling symbols and the third number of data symbols are concatenated in order to construct a signaling data sequence, which may be applicable to low mobility scenarios.

In another embodiment, step 102 includes: splicing the second number of signaling symbols and the third number of data symbols in order, and inserting an intermediate training sequence every fourth number of data symbols to construct A signaling data sequence; wherein, the autocorrelation of the intermediate training sequence is greater than the second autocorrelation, and the peak-to-average power ratio of the intermediate training sequence is lower than the second peak-to-average power ratio; the fourth number is negatively correlated with the channel change speed.

As shown in FIG. 4 , the signaling data sequence includes: a second number of signaling symbols, a third number of data symbols, and an intermediate training sequence, and an intermediate training sequence is inserted every M data symbols. Among them, SIG represents a signaling symbol, Data represents a data symbol, and Midamble represents an intermediate training sequence. The second number may be 4, the third number may be 31×N, where N is a positive integer, and M represents the fourth number, which is not limited in this embodiment.

The autocorrelation of the middle training sequence is greater than the second autocorrelation, and the peak-to-average power ratio of the middle training sequence is lower than the second peak-to-average power ratio. That is, the middle training sequence has stronger autocorrelation and lower peak-to-average power.

M is negatively correlated with channel change speed, that is, in a high mobility scenario, the faster the channel change speed, the smaller the value of M should be. In the same specific implementation, multiple M values can be configured to adapt to different channel environments. For example, the M value can be configured as 8, 16, 32, etc., and the system can flexibly select the appropriate M value according to the channel change speed when sending wireless communication frames. value.

In this embodiment, the second number of signaling symbols and the third number of data symbols are spliced in sequence, and an intermediate training sequence is inserted every fourth number of data symbols to construct a signaling data sequence; The middle training sequence has strong autocorrelation and low peak average power, and the fourth number is negatively correlated with the channel change speed, and the appropriate fourth number can be flexibly selected according to the channel change speed, which can be applied to high mobility scenarios .

Optionally, the intermediate training sequence is constructed through the following steps: the cyclic prefix and the fifth number of first ZC sequences are spliced in order to construct an intermediate training sequence; wherein the cyclic prefix includes the last preset number in the first ZC sequence the sampling point.

The sequence of the cyclic prefix and the fifth number of first ZC sequences is as follows: the cyclic prefix is located before the fifth number of first ZC sequences, and the cyclic prefix and the fifth number of first ZC sequences are spliced in order to construct an intermediate training sequence.

As shown in FIG. 5 , the intermediate training sequence includes: a cyclic prefix and a fifth number of first ZC sequences, where the fifth number may be 8, and this embodiment is not limited thereto. Wherein, the length of the first ZC sequence is 64 points, and the cyclic prefix includes the last 16 sampling points in the first ZC sequence. The first ZC sequence of the middle training sequence is the same as the first ZC sequence of the leading training sequence.

Taking the 2MHz system bandwidth as an example, the length of each sampling point is 500ns, the symbol length of the first ZC sequence is 32μs, the symbol length of the cyclic prefix is 8μs, and the length of the entire intermediate training sequence is 8μs+32μs×8=264μs.

In this embodiment, since the modulus value of the ZC sequence is constant (PAPR=0dB), the transmission power of the intermediate training sequence can be increased by 3dB compared with the transmission power of the data/signaling symbol without increasing the cost of the power amplifier device, so that The system can work at a lower signal-to-noise ratio.

In a specific implementation, as shown in FIG. 6 , the wireless communication frame includes: a preamble training sequence, a signaling symbol, a data symbol, and an intermediate training sequence.

Wherein, taking the 2MHz system bandwidth as an example, preamble represents the preamble training sequence, which may include: cyclic prefix and 13 ZC sequences, and the length of the entire preamble training sequence may be 8μs+32μs×13μs=424μs. The phase difference between the 13th ZC sequence and the first 12 ZC sequences is π. The preamble training sequence is mainly used for automatic gain control (AGC, Automatic Gain Control), data packet detection, acquisition of time-frequency synchronization information of data packets, and channel estimation.

SIG can include 4 signaling symbols, each signaling symbol can be composed of a cyclic prefix with a length of 16 points and an OFDM symbol with a length of 64 points, and the duration of the 4 signaling symbols can be (16+64)×4 ×500ns=160μs. In the wireless communication system, in addition to transmitting user information, signaling symbols are control signals required to ensure normal communication in order to make the entire network work sequentially, such as: Modulation and Coding Strategy (MCS, Modulation and Coding Scheme) signal, mobile Internet device (MID, Mobile Internet Device) signal and distance (Length) signal, etc.

Data symbols can be divided into N parts: Data Seg0, Data Seg1, ..., Data SegN-1, and each data symbol can include M data symbols. M is negatively correlated with the channel change speed. The faster the channel change speed, the smaller the value of M should be. For example, the M value can be configured as 8, 16, 32, etc. The data symbol can be composed of a cyclic prefix with a length of 16 points and an OFDM symbol with a length of 64 points. The duration of the data symbol can be (16+64)×500ns=40μs, and the duration of each data symbol can be 40×Mμs . Data symbols are used to transmit data.

Midamble represents the intermediate training sequence, which is inserted every M data symbols. The intermediate training sequence can include: a cyclic prefix and 8 ZC sequences. The symbol length of the ZC sequence is 32 μs, and the symbol length of the cyclic prefix is 8 μs. The entire middle The length of the training sequence is 8μs+32μs×8=264μs. The mid training sequence is used for channel estimation.

In this embodiment, on the one hand, since the modulus value of the ZC sequence is constant (PAPR=0dB), it is possible to make the transmission power of the preamble training sequence/intermediate training sequence higher than that of the data/signaling symbol without increasing the cost of the power amplifier device. The transmit power is increased by 3dB, so that the system can work at a lower signal-to-noise ratio. On the other hand, an intermediate training sequence is inserted every M data symbols, and an appropriate M value can be flexibly selected according to the channel change speed, which can be applied to high mobility scenarios. Such a wireless communication frame can enable the wireless communication system to work in scenarios with lower signal-to-noise ratio and high mobility, and enable longer-distance point-to-point communication in areas lacking cellular network coverage.

Optionally, both the length of the preamble training sequence and the length of the middle training sequence are negatively correlated with the signal-to-noise ratio.

The lengths of the leading training sequence and the intermediate training sequence can be adjusted according to actual application scenarios. For example: on the premise that the system supports signal-to-noise ratio (SNR, SIGNAL-NOISE RATIO) estimation, the length of the training sequence can be reduced in a high SNR scenario.

In this embodiment, since the length of the preamble training sequence and the length of the intermediate training sequence are negatively correlated with the signal-to-noise ratio, the length of the training sequence can be reduced in a high SNR scenario to further improve the data throughput rate of the system.

Optionally, the subcarrier mapping structure of the signaling symbol or the data symbol includes: a sixth number of data subcarriers and a seventh number of pilot subcarriers;

The power factors of data subcarriers and pilot subcarriers satisfy the following conditions:

The ratio between the sum of the first product and the second product and the sum of the sixth number and the seventh number is 1, the first product is the product between the square of the power factor of the data subcarrier and the sixth number, and the second The two product is the product between the square of the power factor of the pilot subcarriers and the seventh quantity.

Specifically, the specific structures of the signaling symbol and the data symbol are the same, and both the signaling symbol and the data symbol are composed of a cyclic prefix with a length of 16 points and an OFDM symbol with a length of 64 points. The data information carried by OFDM symbols is mapped to specified subcarriers in the frequency domain, and then the corresponding OFDM symbols in the time domain are obtained through Inverse Fast Fourier Transform (IFFT). The specific subcarrier mapping is as follows.

in:

Among them, r(t) represents the OFDM symbol in the time domain; P _k,n is the pilot signal at subcarrier k on the nth data symbol, and the generation method of the pilot signal is the same as that of 802.11n; d _i,n is the modulated signal carried on the nth symbol, i∈[0,51]; T _SYM is the duration of the data symbol; T _CP is the duration of the cyclic prefix; Δf is the subcarrier spacing; Scale _D is the data subcarrier Power factor; Scale _P is the power factor of the pilot subcarrier.

Adding the power factor of the data subcarrier and the power factor of the pilot subcarrier can increase the transmission power of the pilot signal on the premise of ensuring that the transmission power of the entire OFDM symbol remains unchanged, so as to obtain better parameter estimation results. Therefore, for the subcarrier mapping structure of the current system (52 data subcarriers, 4 pilot subcarriers), the two power factors should satisfy the following relationship:

第二乘积可以为

本实施例不限于此。Wherein, the sixth number can be 52, the seventh number can be 4, and the first product can be

The second product can be

This embodiment is not limited thereto.

In this embodiment, by adding the power factor of the data subcarrier and the power factor of the pilot subcarrier, the transmission power of the pilot signal can be increased under the premise of ensuring that the transmission power of the entire OFDM symbol remains unchanged, so as to obtain better parameter estimation result.

The device for generating a wireless communication frame provided in this application is described below, and the device for generating a wireless communication frame described below and the method for generating a wireless communication frame described above may be referred to in correspondence.

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of an apparatus for generating a wireless communication frame provided by an embodiment of the present application. As shown in Figure 7, the device may include:

The first construction module 10 is used to construct a preamble training sequence, the autocorrelation of the preamble training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio;

The second construction module 20 is configured to construct a signaling data sequence, where the signaling data sequence includes: a signaling symbol and a data symbol, where the data symbol is located after the signaling symbol;

The generating module 30 is configured to splice the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

Optionally, the first construction module 10 is specifically used for:

Splicing the cyclic prefix, the first ZC sequence of the first quantity, and the second ZC sequence in sequence to construct a leading training sequence;

Wherein, the first ZC sequence of the first number is the same, the phase difference between the second ZC sequence and the first ZC sequence is π, and the cyclic prefix includes the last preset number of samples in the first ZC sequence point.

Optionally, the second construction module 20 is specifically used for:

Splicing the second number of signaling symbols and the third number of data symbols in order to construct a signaling data sequence.

Optionally, the second construction module 20 is specifically used for:

Splicing the second number of signaling symbols and the third number of data symbols in sequence, and inserting an intermediate training sequence every fourth number of data symbols to construct a signaling data sequence;

Wherein, the autocorrelation of the intermediate training sequence is greater than the second autocorrelation, and the peak-to-average power ratio of the intermediate training sequence is lower than the second peak-to-average power ratio; the fourth quantity is negatively correlated with the channel change speed.

Optionally, the second construction module 20 is also configured to construct the intermediate training sequence in the following manner:

Splicing the cyclic prefix and the fifth number of first ZC sequences in sequence to construct an intermediate training sequence;

Wherein, the cyclic prefix includes the last preset number of sampling points in the first ZC sequence.

Optionally, both the length of the preamble training sequence and the length of the intermediate training sequence are negatively correlated with the signal-to-noise ratio.

Optionally, the subcarrier mapping structure of the signaling symbol or the data symbol includes: a sixth number of data subcarriers and a seventh number of pilot subcarriers;

The power factors of the data subcarriers and the pilot subcarriers meet the following conditions:

The ratio between the sum of the first product and the second product and the sum of the sixth number and the seventh number is 1, the first product is the square of the power factor of the data subcarrier and the The product of the sixth number, the second product is the product of the square of the power factor of the pilot subcarrier and the seventh number.

FIG. 8 illustrates a schematic diagram of a physical structure of an electronic device. Optionally, the electronic device may be a chip or a chip system, or a device including a chip. As shown in FIG. 8, the electronic device may include: a processor (processor) 810, a communication interface (Communications Interface) 820, a memory (memory) 830, and a communication bus 840, wherein the processor 810, the communication interface 820, and the memory 830 pass through The communication bus 840 completes mutual communication. The processor 810 may invoke logic instructions in the memory 830 to execute a method for generating a wireless communication frame, and the method includes:

Constructing a leading training sequence, the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the leading training sequence is lower than the first peak-to-average power ratio;

constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol;

Splicing the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

In addition, the above logic instructions in the memory 830 may be implemented in the form of software functional units and when sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

On the other hand, the present application also provides a computer program product, the computer program product includes a computer program stored on a computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, The computer can execute the method for generating the wireless communication frame provided by the above-mentioned methods, and the method includes:

Constructing a leading training sequence, the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the leading training sequence is lower than the first peak-to-average power ratio;

constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol;

Splicing the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

In another aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the methods for generating wireless communication frames provided above, the method comprising:

Constructing a leading training sequence, the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the leading training sequence is lower than the first peak-to-average power ratio;

constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol;

Splicing the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims (10)

1. A method for generating a wireless communication frame, comprising: Constructing a leading training sequence, the autocorrelation of the leading training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the leading training sequence is lower than the first peak-to-average power ratio; constructing a signaling data sequence, the signaling data sequence comprising: a signaling symbol and a data symbol, the data symbol being located after the signaling symbol; Splicing the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame. 2. The generation method of wireless communication frame according to claim 1, is characterized in that, described construction preamble training sequence, comprises: Splicing the cyclic prefix, the first ZC sequence of the first quantity, and the second ZC sequence in sequence to construct a leading training sequence; Wherein, the first ZC sequence of the first number is the same, the phase difference between the second ZC sequence and the first ZC sequence is π, and the cyclic prefix includes the last preset number of samples in the first ZC sequence point. 3. The generation method of the wireless communication frame according to claim 1 or 2, wherein, said constructing signaling data sequence comprises: Splicing the second number of signaling symbols and the third number of data symbols in order to construct a signaling data sequence. 4. The generation method of the wireless communication frame according to claim 1 or 2, wherein, said constructing signaling data sequence comprises: Splicing the second number of signaling symbols and the third number of data symbols in sequence, and inserting an intermediate training sequence every fourth number of data symbols to construct a signaling data sequence; Wherein, the autocorrelation of the intermediate training sequence is greater than the second autocorrelation, and the peak-to-average power ratio of the intermediate training sequence is lower than the second peak-to-average power ratio; the fourth quantity is negatively correlated with the channel change speed. 5. The generation method of wireless communication frame according to claim 4, is characterized in that, constructs described intermediate training sequence by the following steps: Splicing the cyclic prefix and the fifth number of first ZC sequences in sequence to construct an intermediate training sequence; Wherein, the cyclic prefix includes the last preset number of sampling points in the first ZC sequence. 6. The method for generating a wireless communication frame according to claim 4 or 5, characterized in that, both the length of the preamble training sequence and the length of the intermediate training sequence are negatively correlated with the signal-to-noise ratio. 7. The method for generating a wireless communication frame according to any one of claims 1-6, wherein the subcarrier mapping structure of the signaling symbol or the data symbol comprises: the sixth number of data subcarriers and a seventh number of pilot subcarriers; The power factors of the data subcarriers and the pilot subcarriers meet the following conditions: The ratio between the sum of the first product and the second product and the sum of the sixth number and the seventh number is 1, the first product is the square of the power factor of the data subcarrier and the The product of the sixth number, the second product is the product of the square of the power factor of the pilot subcarrier and the seventh number. 8. A device for generating a wireless communication frame, comprising: The first construction module is used to construct a preamble training sequence, the autocorrelation of the preamble training sequence is greater than the first autocorrelation, and the peak-to-average power ratio of the preamble training sequence is lower than the first peak-to-average power ratio; A second construction module, configured to construct a signaling data sequence, where the signaling data sequence includes: a signaling symbol and a data symbol, where the data symbol is located after the signaling symbol; A generating module, configured to splice the preamble training sequence and the signaling data sequence in sequence to generate a wireless communication frame. 9. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, characterized in that, when the processor executes the computer program, the computer program according to claim 1 is realized. Steps of the method for generating a wireless communication frame described in any one of 1 to 7. 10. A computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the method for generating a wireless communication frame as claimed in any one of claims 1 to 7 is implemented. step.

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