CN111212009B - Spectrum efficiency enhancing method and system - Google Patents

Abstract

Embodiments of the present invention provide a spectrum efficiency enhancement method and system. The method includes: if it is determined that the peak average power of a terminal is greater than a preset power threshold or the frequency domain resource utilization of the terminal is less than a preset frequency domain threshold, according to the initial uplink waveform The Doppler frequency offset of the signal is used to obtain the moving speed of the terminal; according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal are obtained; according to the effective frequency and the frequency offset amplitude to obtain the signal type threshold; according to the relationship between the moving speed of the terminal and the signal type threshold, determine the signal type of the terminal to adjust the initial uplink waveform signal. The embodiment of the present invention improves the spectrum transmission performance of the 5G network by selecting a suitable uplink waveform signal and setting a reasonable threshold value of the uplink waveform signal.

Description

A kind of spectral efficiency enhancement method and system

technical field

Embodiments of the present invention relate to the field of mobile communication technologies, and in particular, to a method and system for enhancing spectral efficiency.

Background technique

In the upcoming large-scale testing and deployment of 5G, the explosive growth of services brought about by the diversified scenarios of the Internet of Things has increased the demand for mobile bandwidth service performance. In order to meet the transmission requirements of ultra-low latency services and solve the problem of large system performance loss in scenarios with large frequency offsets such as high-speed mobile, 5G networks introduce two uplink waveforms, CP-OFDM and DFT-S-OFDM.

However, the current uplink waveform transmission method adopted by 5G networks is a fixed setting of the uplink SNR threshold. When the threshold setting is unreasonable, it will lead to the problem of high peak average power meter or limited utilization of frequency domain resources.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a spectrum efficiency enhancement method and system, so as to solve the problem that in the prior art, the base station cannot adjust the threshold value of the uplink waveform signal according to the actual operation condition of the base station, and the average power may be caused when the threshold value is set unreasonably. Problems with too high or limited resource utilization in the frequency domain.

In a first aspect, an embodiment of the present invention provides a spectrum efficiency enhancement method, including:

If it is determined that the peak average power of the known terminal is greater than the preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold, the moving speed of the terminal is obtained according to the Doppler frequency offset of the initial uplink waveform signal, the initial uplink waveform signal is sent by the terminal;

According to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal;

obtaining a signal type threshold according to the effective frequency and the frequency offset amplitude;

According to the relationship between the moving speed of the terminal and the signal type threshold, the signal type of the terminal is determined to adjust the initial uplink waveform signal.

In a second aspect, an embodiment of the present invention provides a system for enhancing spectral efficiency, including:

The obtaining module is configured to obtain the said terminal according to the Doppler frequency offset of the initial uplink waveform signal if it is determined that the peak average power of the known terminal is greater than a preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold The moving speed of the terminal, the initial uplink waveform signal is sent by the terminal;

a calculation module, configured to obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal;

a judgment module, configured to obtain a signal type threshold according to the effective frequency and the frequency offset amplitude;

An adjustment module, configured to determine the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal.

In a third aspect, an embodiment of the present invention provides an electronic device, including:

at least one processor, at least one memory, a communication interface, and a bus; wherein,

The processor, the memory, and the communication interface communicate with each other through the bus;

The communication interface is used for information transmission between the test equipment and the communication equipment of the display device;

The memory stores program instructions executable by the processor, and the processor invokes the program instructions to execute the spectral efficiency enhancement method provided by the first aspect.

In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the first aspect A spectral efficiency enhancement method is provided.

In a method and system for enhancing spectral efficiency provided by the embodiments of the present invention, the signal type of the terminal is determined according to the moving speed of the terminal, and the initial uplink waveform signal is adjusted according to different signal types, so as to select a suitable uplink waveform signal, and Set a reasonable threshold for the uplink waveform signal, thereby improving the spectrum transmission performance of the 5G network.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces 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 These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a flowchart of a method for enhancing spectral efficiency in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a system for enhancing spectral efficiency according to an embodiment of the present invention;

FIG. 3 illustrates a schematic diagram of the physical structure of an electronic device.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The execution body of the embodiment of the present invention is a base station. FIG. 1 is a flowchart of a method for enhancing spectral efficiency in an embodiment of the present invention. As shown in FIG. 1 , the method includes:

S1, if it is determined that the peak average power of the known terminal is greater than the preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold, obtain the movement of the terminal according to the Doppler frequency offset of the initial uplink waveform signal speed, the initial uplink waveform signal is sent by the terminal;

S2, according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal;

S3, obtain a signal type threshold according to the effective frequency and the frequency offset amplitude;

S4: Determine the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal.

The embodiment of the present invention is described by taking 5G network signal transmission as an example, and is also applicable to signal transmission in other fields. 5G uplink defines two waveform modulations, CP-OFDM and DFT-S-OFDM. The embodiment of the present invention describes how to optimally select which waveform is used for uplink transmission.

First, determine whether the peak average power of the terminal is greater than the preset power threshold. If it is greater, it means that the peak average power of the terminal is too large. At the same time, determine whether the frequency resource utilization is less than the preset frequency domain threshold. If it is less than the preset frequency domain threshold, it means that the frequency domain resource utilization is limited. .

When the terminal peak average power or frequency domain resource utilization is normal, the uplink waveform optimization method with a fixed threshold is adopted.

It should be noted that the peak average power and frequency domain resource utilization are some basic indicators of the network. Generally speaking, the peak average power of the terminal is up to 23dbm, and the preset power threshold needs to be determined by the network optimization engineer according to the on-site situation. to set.

The maximum frequency domain resource utilization is 100%, and the preset frequency domain threshold is also set by the network optimization engineer according to the on-site situation.

When it is determined that the peak average power of the terminal is too high or the utilization of frequency domain resources is limited, it is necessary to optimize the initial uplink waveform signal.

The limit is to calculate the moving speed of the terminal according to the Doppler frequency offset of the initial signal, and then obtain the effective frequency of the initial uplink waveform signal and the frequency offset of the initial uplink waveform signal according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal shift amplitude.

According to the effective frequency and frequency offset amplitude, the signal type threshold is calculated, and then according to the relationship between the moving speed of the terminal and the signal type threshold, it is judged which type the terminal belongs to, and according to which type the terminal belongs to, the Select an appropriate initial upstream waveform signal.

In a spectrum efficiency enhancement method provided by an embodiment of the present invention, the signal type of the terminal is judged by the moving speed of the terminal, and the initial uplink waveform signal is adjusted according to different signal types, so as to select an appropriate uplink waveform signal and set reasonable settings. The threshold value of the uplink waveform signal, thereby improving the spectrum transmission performance of the 5G network.

On the basis of the above embodiment, preferably, the obtaining the signal type threshold according to the effective frequency and the frequency offset amplitude specifically includes:

If the moving speed of the terminal is greater than the signal type threshold, the signal type of the terminal is a high-speed signal;

If the moving speed of the terminal is not greater than the signal type threshold, the signal type of the terminal is a low-speed signal.

Specifically, the types of terminals are divided into high-speed signals and low-speed signals. For high-speed signals, the adaptive amplitude modulation method based on upper and lower thresholds is used to realize the adaptive optimization of the initial uplink waveform signal. Method, by obtaining the optimization method of the low-speed signal based on the user signal waveform weight threshold score algorithm, by obtaining the low-speed user signal waveform weight threshold score judgment based on the user signal period, bit error rate and signal-to-noise ratio threshold, and then performing the uplink waveform. Adaptive optimization.

On the basis of the above embodiment, preferably, the signal type of the terminal is determined according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal, Specifically include:

If it is determined that the signal type of the terminal is a high-speed signal, the signal quality of the initial uplink waveform signal is detected, and a preset upper threshold and a preset lower threshold for signal detection are set;

If it is determined that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the terminal uses the CP-OFDM uplink waveform as the initial uplink waveform signal;

If it is determined that the signal quality of the initial uplink waveform signal is less than the preset lower threshold, the terminal uses the DFT-S-OFDM uplink waveform as the initial uplink waveform signal;

If the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, and the current number of signal quality checks is less than the preset number of cyclic detections, re-check the signal of the initial uplink waveform signal. The quality is checked until a suitable uplink waveform is selected for the terminal.

For high-speed signals, the method to determine the final initial upstream waveform signal is:

Quality detection is performed on the channel transmitted by the initial uplink waveform signal, and at the same time, the preset upper threshold and the preset lower threshold for signal detection are set according to the actual situation on site.

If the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, it means that the signal quality of the initial uplink waveform signal is good. For the initial uplink waveform signal whose spectrum state has been determined to be "good state", the CP-OFDM uplink waveform is used as the Initial upstream waveform signal.

If the signal quality of the initial uplink waveform signal is less than the preset lower threshold, it means that the signal quality of the initial uplink waveform signal is acceptable. Upstream waveform signal.

If the signal quality of the initial uplink waveform signal is between the upper and lower thresholds, it indicates that the quality of the initial uplink waveform signal is poor, and the initial uplink waveform signal needs to be detected again. The signal quality of the initial uplink waveform signal is detected again until it is detected that the quality state of the initial uplink waveform signal is "good state" or "maintain state".

On the basis of the foregoing embodiment, preferably, the step of determining that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold further includes:

If the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the adjustment range of the preset upper threshold and the preset lower threshold is decreased, and the value of the preset cycle detection times is decreased.

When it is detected that the quality of the initial uplink waveform signal is good, the adjustment range of the preset upper threshold and the preset lower threshold for signal detection is decreased, and the value of the preset cycle detection times is decreased at the same time.

Because when the initial upstream waveform signal is in a good state, it is not necessary to adjust the waveform selection all the time, just keep the original one, and do not go to the loop detection and judgment all the time. Therefore, it is necessary to reduce the correction of the preset upper threshold and the preset lower threshold. Decreasing the value of the preset number of cycles can reduce the number of cycle detections, and for the initial uplink waveform signal with better signal quality, the uplink transmission efficiency can be improved.

On the basis of the above embodiment, preferably, the step of determining that the signal quality of the initial uplink waveform signal is less than the preset lower threshold further includes:

If the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, increase the adjustment range of the preset upper threshold and the preset lower threshold, and increase the preset upper threshold and the preset lower threshold. Set the value of the cycle detection times.

If the signal quality of the initial uplink waveform signal is between the preset upper threshold and the preset lower threshold, it means that the quality status of the initial uplink waveform signal is "poor state", and the preset upper threshold and preset threshold for signal detection need to be increased. The adjustment range of the lower threshold, and at the same time increase the preset cycle detection times. By increasing the upper and lower thresholds of the signal cycle detection, the number of signal cycle detections can be increased, because when the signal quality is poor, more detection and judgment are required, so that Complete the adaptive waveform adjustment of this cycle.

For example, if the initial uplink waveform signal is good, the CP-OFDM waveform should be reserved; if the signal is poor, the DFT-S-OFDM waveform may be used instead.

On the basis of the above embodiment, preferably, the signal type of the terminal is determined according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal, Further includes:

If it is determined that the signal type of the terminal is a low-speed signal, obtain the signal according to the signal period of the initial uplink waveform signal, the bit error rate of the initial uplink waveform signal, and the signal-to-noise ratio threshold of the initial uplink waveform signal. a first weight, a second weight and a third weight;

According to the first weight, the second weight and the third weight, the difference between the signal quality of the initial uplink waveform signal before signal detection and the signal quality after signal detection, the initial uplink waveform signal is The difference between the bit error rate before signal detection and the bit error rate after the initial uplink waveform signal is subjected to signal detection, the signal-to-noise ratio before the initial uplink waveform signal is subjected to signal detection and the initial uplink waveform signal after signal detection Obtain the weight threshold evaluation coefficient of the initial uplink waveform signal;

If the weight threshold evaluation coefficient of the initial uplink waveform signal is greater than the preset weight threshold evaluation coefficient, modify the initial uplink waveform signal;

If the weight threshold evaluation coefficient of the initial uplink waveform signal is smaller than the preset weight threshold evaluation coefficient, keep the initial uplink waveform signal unchanged.

For low-speed signals, the signal period of the initial uplink waveform signal, the bit error rate of the initial uplink waveform signal, and the SNR threshold of the initial uplink waveform signal are used to obtain the first weight, the second weight and the third weight, and then according to the first weight, the second weight and the third weight are obtained. A weight, a second weight, a third weight, the difference between the signal quality before and after the initial uplink waveform signal is detected, the difference between the bit error rates before and after the initial uplink waveform signal is detected, the initial uplink waveform signal is detected The difference of the signal-to-noise ratio before and after the detection is used to obtain the weight threshold evaluation coefficient of the initial uplink waveform signal.

The weight threshold evaluation coefficient is used to judge whether the obtained first weight, second weight and third weight are reasonable. The weight threshold evaluation coefficient is compared with the preset weight threshold evaluation coefficient. If the weight threshold evaluation coefficient is greater than the preset weight threshold evaluation coefficient, It indicates that the settings of the first weight, the second weight and the third weight are unreasonable and need to be corrected.

If the weight threshold evaluation coefficient is smaller than the preset weight threshold evaluation coefficient, it indicates that the settings of the first weight, the second weight and the third weight are reasonable, and the original initial uplink waveform signal may be maintained.

On the basis of the above embodiment, preferably, the weight threshold evaluation coefficient of the initial uplink waveform signal is obtained by the following formula:

R=K1*(SNR1-SNR2)+K2*(T1-T2)+K3*(BLER1-BLER2);

Wherein, R represents the weight threshold evaluation coefficient, K1 represents the first weight, K2 represents the second weight, K3 represents the third weight, and SNR1 represents the signal quality of the initial uplink waveform signal before signal detection. , SNR2 represents the signal quality of the initial uplink waveform signal after signal detection, T1 the bit error rate of the initial uplink waveform signal before signal detection, T2 the bit error rate of the initial uplink waveform signal after signal detection, BLER1 The signal-to-noise ratio of the initial uplink waveform signal before signal detection is performed, and the BLER2 is the signal-to-noise ratio of the initial uplink waveform signal after signal detection.

In the embodiment of the present invention, the terminal signal type (including high-speed signal and low-speed signal) is differentiated by the Doppler effect frequency offset of the initial uplink waveform signal reported by the terminal and the moving speed of the terminal, and differentiated signal types are implemented for different signal types. Uplink waveform adaptive optimization method, for low-speed signals, based on the user signal period, bit error rate and signal-to-noise ratio thresholds, the signal waveform weight threshold score is determined, and then the uplink waveform is adaptively optimized; for high-speed signals, the upper and lower thresholds are used. The adaptive adjustment method realizes the adaptive optimization of the uplink waveform, which is used to solve the problem that the uplink waveform transmission threshold is fixed, resulting in high peak average power or limited utilization of frequency domain resources, reducing the complexity of the spectrum detection algorithm and effectively improving the 5G network. Spectrum transfer performance.

FIG. 2 is a schematic structural diagram of a spectrum efficiency enhancement system provided by an embodiment of the present invention. As shown in FIG. 2 , the system includes an acquisition module 201, a calculation module 202, a judgment module 203, and an adjustment module 204, wherein:

The obtaining module 201 is configured to obtain the information according to the Doppler frequency offset of the initial uplink waveform signal if it is determined that the peak average power of the learned terminal is greater than a preset power threshold or the frequency domain resource utilization of the terminal is less than a preset frequency domain threshold. The moving speed of the terminal, the initial uplink waveform signal is sent by the terminal;

The calculation module 202 is configured to obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal;

The judgment module 203 is configured to obtain a signal type threshold according to the effective frequency and the frequency offset amplitude;

The adjustment module 204 is configured to determine the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal.

First, the acquisition module 201 compares the peak average power of the terminal with the preset power threshold. If the peak average power is greater than the preset power threshold, it means that the peak average power of the terminal is too high, or the frequency domain resource utilization rate of the terminal is The comparison with the preset frequency domain threshold shows that the terminal has limited utilization of frequency domain resources, and an appropriate uplink waveform needs to be selected according to the actual situation of the terminal.

The acquiring module also calculates the moving speed of the terminal according to the Doppler frequency offset of the initial uplink waveform signal sent by the terminal.

The calculation module 202 obtains the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmission frequency of the initial uplink waveform and the moving speed of the terminal.

The judging module 203 obtains the signal type threshold according to the effective frequency and the frequency offset amplitude.

The modulation module 204 determines the signal type of the terminal according to the magnitude relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal, that is, to select an appropriate initial uplink waveform signal.

A spectrum efficiency enhancement system provided by an embodiment of the present invention determines the signal type of the terminal according to the moving speed of the terminal, and adjusts the initial uplink waveform signal according to different signal types, so as to select a suitable uplink waveform signal, and set reasonable settings. The threshold value of the uplink waveform signal, thereby improving the spectrum transmission performance of the 5G network.

FIG. 3 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 3, the electronic device may include: a processor (processor) 310, a communication interface (Communications)

Interface) 320, a memory 330 and a bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other through the bus 340. The communication interface 340 can be used for information transmission between the server and the smart TV. The processor 310 may invoke logic instructions in the memory 330 to perform the following methods:

If it is determined that the peak average power of the known terminal is greater than the preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold, the moving speed of the terminal is obtained according to the Doppler frequency offset of the initial uplink waveform signal, the initial uplink waveform signal is sent by the terminal;

According to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal;

obtaining a signal type threshold according to the effective frequency and the frequency offset amplitude;

According to the relationship between the moving speed of the terminal and the signal type threshold, the signal type of the terminal is determined to adjust the initial uplink waveform signal.

In addition, the above-mentioned logic instructions in the memory 330 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, removable 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.

This embodiment provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the foregoing method embodiments, for example, including :

If it is determined that the peak average power of the known terminal is greater than the preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold, the moving speed of the terminal is obtained according to the Doppler frequency offset of the initial uplink waveform signal, the initial uplink waveform signal is sent by the terminal;

According to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal;

obtaining a signal type threshold according to the effective frequency and the frequency offset amplitude;

According to the relationship between the moving speed of the terminal and the signal type threshold, the signal type of the terminal is determined to adjust the initial uplink waveform signal.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform 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 invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; 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 embodiments of the present invention.

Claims (10)

1. a spectral efficiency enhancement method, is characterized in that, comprises: If it is determined that the peak average power of the known terminal is greater than the preset power threshold or the frequency domain resource utilization of the terminal is less than the preset frequency domain threshold, the moving speed of the terminal is obtained according to the Doppler frequency offset of the initial uplink waveform signal, the initial uplink waveform signal is sent by the terminal; According to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal, obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal; obtaining a signal type threshold according to the effective frequency and the frequency offset amplitude; According to the relationship between the moving speed of the terminal and the signal type threshold, the signal type of the terminal is determined to adjust the initial uplink waveform signal. 2 . The method according to claim 1 , wherein the obtaining a signal type threshold according to the effective frequency and the frequency offset amplitude specifically comprises: 2 . If the moving speed of the terminal is greater than the signal type threshold, the signal type of the terminal is a high-speed signal; If the moving speed of the terminal is not greater than the signal type threshold, the signal type of the terminal is a low-speed signal. 3. The method according to claim 2, wherein the signal type of the terminal is determined according to the relationship between the moving speed of the terminal and the signal type threshold, so as to determine the signal type of the initial uplink waveform signal. Make adjustments, including: If it is determined that the signal type of the terminal is a high-speed signal, the signal quality of the initial uplink waveform signal is detected, and a preset upper threshold and a preset lower threshold for signal detection are set; If it is determined that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the terminal uses the CP-OFDM uplink waveform as the initial uplink waveform signal; If it is determined that the signal quality of the initial uplink waveform signal is less than the preset lower threshold, the terminal uses the DFT-S-OFDM uplink waveform as the initial uplink waveform signal; If the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, and the current number of signal quality checks is less than the preset number of cyclic detections, re-check the signal of the initial uplink waveform signal. The quality is checked until a suitable uplink waveform is selected for the terminal. 4. The method according to claim 3, wherein the step of determining that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold further comprises: If the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the adjustment range of the preset upper threshold and the preset lower threshold is decreased, and the value of the preset cycle detection times is decreased. 5. The method according to claim 3, wherein the step of determining that the signal quality of the initial uplink waveform signal is less than the preset lower threshold further comprises: If the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, increase the adjustment range of the preset upper threshold and the preset lower threshold, and increase the preset upper threshold and the preset lower threshold. Set the value of the cycle detection times. 6. The method according to claim 2, wherein the signal type of the terminal is determined according to the relationship between the moving speed of the terminal and the signal type threshold, so as to determine the signal type of the initial uplink waveform signal. Make adjustments to further include: If it is determined that the signal type of the terminal is a low-speed signal, obtain the signal according to the signal period of the initial uplink waveform signal, the bit error rate of the initial uplink waveform signal, and the signal-to-noise ratio threshold of the initial uplink waveform signal. a first weight, a second weight and a third weight; According to the first weight, the second weight and the third weight, the difference between the signal quality of the initial uplink waveform signal before signal detection and the signal quality after signal detection, the initial uplink waveform signal is The difference between the bit error rate before signal detection and the bit error rate after the initial uplink waveform signal is subjected to signal detection, the signal-to-noise ratio before the initial uplink waveform signal is subjected to signal detection and the initial uplink waveform signal after signal detection Obtain the weight threshold evaluation coefficient of the initial uplink waveform signal; If the weight threshold evaluation coefficient of the initial uplink waveform signal is greater than the preset weight threshold evaluation coefficient, modify the initial uplink waveform signal; If the weight threshold evaluation coefficient of the initial uplink waveform signal is smaller than the preset weight threshold evaluation coefficient, keep the initial uplink waveform signal unchanged. 7. The method according to claim 6, wherein the weight threshold evaluation coefficient of the initial uplink waveform signal is obtained by the following formula: R=K1*(SNR1-SNR2)+K2*(T1-T2)+K3*(BLER1-BLER2); Wherein, R represents the weight threshold evaluation coefficient, K1 represents the first weight, K2 represents the second weight, K3 represents the third weight, and SNR1 represents the signal quality of the initial uplink waveform signal before signal detection. , SNR2 represents the signal quality of the initial uplink waveform signal after signal detection, T1 represents the bit error rate of the initial uplink waveform signal before signal detection, and T2 represents the bit error rate of the initial uplink waveform signal after signal detection , BLER1 represents the signal-to-noise ratio of the initial uplink waveform signal before signal detection, and BLER2 represents the signal-to-noise ratio of the initial uplink waveform signal after signal detection. 8. A system for enhancing spectral efficiency, comprising: The obtaining module is configured to obtain the information according to the Doppler frequency offset of the initial uplink waveform signal if it is determined that the peak average power of the known terminal is greater than a preset power threshold or the frequency domain resource utilization of the terminal is less than a preset frequency domain threshold The moving speed of the terminal, the initial uplink waveform signal is sent by the terminal; a calculation module, configured to obtain the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmission frequency of the initial uplink waveform signal and the moving speed of the terminal; a judgment module, configured to obtain a signal type threshold according to the effective frequency and the frequency offset amplitude; An adjustment module, configured to determine the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal. 9. An electronic device, characterized in that, comprising: at least one processor, at least one memory, a communication interface, and a bus; wherein, The processor, the memory, and the communication interface communicate with each other through the bus; The communication interface is used for information transmission between the test equipment and the communication equipment of the display device; The memory stores program instructions executable by the processor, the processor invoking the program instructions capable of performing the method of any one of claims 1-7. 10 . A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, the computer instructions cause the computer to execute any one of claims 1 to 7 . Methods.

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