CN111212009A - Spectrum efficiency enhancing method and system - Google Patents
Spectrum efficiency enhancing method and system Download PDFInfo
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- CN111212009A CN111212009A CN201811392035.9A CN201811392035A CN111212009A CN 111212009 A CN111212009 A CN 111212009A CN 201811392035 A CN201811392035 A CN 201811392035A CN 111212009 A CN111212009 A CN 111212009A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
Abstract
The embodiment of the invention provides a method and a system for enhancing spectral efficiency, wherein the method comprises the following steps: if the peak average power of the terminal is judged to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of the initial uplink waveform signal; acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal; acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude; and judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as to adjust the initial uplink waveform signal. The embodiment of the invention selects the proper uplink waveform signal and sets the threshold value of the reasonable uplink waveform signal, thereby improving the spectrum transmission performance of the 5G network.
Description
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a method and a system for enhancing spectral efficiency.
Background
In the forthcoming large-scale test and deployment of 5G, the business explosive growth brought by the diversified scenes of the Internet of things increases the further demand on the mobile bandwidth business performance. In order to meet the transmission requirement of ultra-low delay service and solve the problem of high system performance loss in scenes with high frequency offset, such as high-speed mobile and the like, a 5G network introduces two uplink waveforms, namely CP-OFDM and DFT-S-OFDM.
However, the uplink waveform transmission mode adopted by the current 5G network is fixed setting of the uplink SNR threshold, and when the threshold is set unreasonably, the problem of high peak average power table or limited frequency domain resource utilization is caused.
Disclosure of Invention
The embodiment of the invention provides a method and a system for enhancing spectral efficiency, which are used for solving the problems that in the prior art, a base station cannot adjust a threshold value of an uplink waveform signal according to the actual operation condition of the base station, and the average power is too high or the utilization rate of frequency domain resources is limited when the threshold value is unreasonably set.
In a first aspect, an embodiment of the present invention provides a method for enhancing spectral efficiency, including:
if the peak average power of the terminal is judged to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of an initial uplink waveform signal, wherein the initial uplink waveform signal is sent by the terminal;
acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal;
acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as to adjust the initial uplink waveform signal.
In a second aspect, an embodiment of the present invention provides a spectrum efficiency enhancing system, including:
an obtaining module, configured to obtain a moving speed of a terminal according to a doppler frequency offset of an initial uplink waveform signal if it is determined that a peak average power of the terminal is greater than a preset power threshold or a frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, where the initial uplink waveform signal is sent by the terminal;
a calculating module, configured to obtain an effective frequency of the initial uplink waveform signal and a frequency offset amplitude of the initial uplink waveform signal according to a transmitting frequency of the initial uplink waveform signal and a moving speed of the terminal;
the judging module is used for acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and the adjusting module is used for judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value 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 content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication 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 to perform a 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, which stores computer instructions, where the computer instructions cause the computer to execute a spectral efficiency enhancement method provided in the first aspect.
According to the method and the system for enhancing the spectrum efficiency, provided by the embodiment of the invention, the signal type of the terminal is judged according to the moving speed of the terminal, the initial uplink waveform signal is adjusted according to different signal types so as to select a proper uplink waveform signal, and the threshold value of the reasonable uplink waveform signal is set, so that the spectrum transmission performance of the 5G network is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a spectral efficiency enhancement method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a spectrum efficiency enhancing system according to an embodiment of the present invention;
fig. 3 illustrates a physical structure diagram of an electronic device.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An execution subject of the embodiment of the present invention is a base station, and fig. 1 is a flowchart of a spectral efficiency enhancing method in the embodiment of the present invention, as shown in fig. 1, the method includes:
s1, if the peak average power of the terminal is judged and obtained to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of an initial uplink waveform signal, wherein the initial uplink waveform signal is sent by the terminal;
s2, acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal;
s3, acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and S4, judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value, so as to adjust the initial uplink waveform signal.
The embodiment of the invention takes 5G network signal transmission as an example for explanation, and is also suitable for signal transmission in other fields. The 5G uplink defines two waveform modulations of CP-OFDM and DFT-S-OFDM, and the embodiment of the invention describes how to optimally select which waveform when in uplink transmission.
Firstly, judging whether the peak average power of the terminal is greater than a preset power threshold, if so, indicating that the peak average power of the terminal is overlarge, meanwhile, judging whether the frequency resource utilization rate is less than a preset frequency domain threshold, and if so, indicating that the frequency domain resource utilization rate is limited.
And when the peak average power or frequency domain resource utilization of the terminal is normal, adopting an uplink waveform optimization method with a fixed threshold.
It should be noted that the peak average power and the frequency domain resource utilization rate are some basic indexes of the network, generally, the peak average power of the terminal is at most 23dbm, and the preset power threshold value is specifically set by a network optimization engineer according to the determination of the field situation.
The maximum frequency domain resource utilization rate is 100%, and the preset frequency domain threshold is set by a network optimization engineer according to the judgment of the field situation.
When the peak average power of the terminal is judged to be too high or the frequency domain resource utilization is limited, the initial uplink waveform signal needs to be optimized.
And then obtaining the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal.
And calculating to obtain a signal type threshold according to the effective frequency and the frequency offset amplitude, judging which type the terminal belongs to according to the magnitude relation between the moving speed of the terminal and the signal type threshold, and selecting a proper initial uplink waveform signal according to which type the terminal specifically belongs to.
According to the spectrum efficiency enhancing method provided by the embodiment of the invention, the signal type of the terminal is judged according to the moving speed of the terminal, the initial uplink waveform signal is adjusted according to different signal types so as to select a proper uplink waveform signal, and a reasonable threshold value of the uplink waveform signal is set, so that the spectrum transmission performance of the 5G network is improved.
On the basis of the foregoing embodiment, preferably, the acquiring a 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 value, the signal type of the terminal is a high-speed signal;
and if the moving speed of the terminal is not greater than the signal type threshold value, the signal type of the terminal is a low-speed signal.
Specifically, the types of the terminals are divided into high-speed signals and low-speed signals, adaptive optimization of initial uplink waveform signals is achieved by adopting a method based on upper and lower threshold adaptive amplitude modulation for the high-speed signals, a method based on signal waveform weight threshold evaluation is adopted for the low-speed signals, signal waveform weight threshold score judgment is carried out by obtaining the low-speed signals through an optimization method based on a user signal waveform weight threshold score algorithm, and then uplink waveform adaptive optimization is carried out by obtaining the low-speed users based on user signal periods, bit error rates and signal-to-noise ratio threshold values.
On the basis of the foregoing embodiment, preferably, the determining the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold to adjust the initial uplink waveform signal specifically includes:
if the signal type of the terminal is judged to be a high-speed signal, detecting the signal quality of the initial uplink waveform signal, and setting a preset upper threshold and a preset lower threshold of signal detection;
if the signal quality of the initial uplink waveform signal is judged to be greater than the preset upper threshold, the terminal takes the CP-OFDM uplink waveform as the initial uplink waveform signal;
if the signal quality of the initial uplink waveform signal is judged to be less than the preset lower threshold, the terminal takes the DFT-S-OFDM uplink waveform as the initial uplink waveform signal;
and if the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold and the current signal quality checking times are less than the preset circulating detection times, detecting the signal quality of the initial uplink waveform signal again until a proper uplink waveform is selected for the terminal.
For high speed signals, the method for determining the final initial upstream waveform signal is as follows:
and performing quality detection on a channel for transmitting the initial uplink waveform signal, and setting a preset upper threshold and a preset lower threshold of signal detection according to the actual situation of the field.
If the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the signal quality of the initial uplink waveform signal is better, and for the initial uplink waveform signal of which the frequency spectrum state is judged to be in a better state, the CP-OFDM uplink waveform is adopted as the initial uplink waveform signal.
And if the signal quality of the initial uplink waveform signal is less than a preset lower threshold, the signal quality of the initial uplink waveform signal is acceptable, the state of the uplink waveform signal is set to be a 'holding state', and a DFT-S-OFDM uplink waveform is adopted as the initial uplink waveform signal.
If the signal quality of the initial uplink waveform signal is between the upper threshold and the lower threshold, the quality state of the initial uplink waveform signal is poor, the initial uplink waveform signal needs to be detected again, and if the current signal detection times are less than the preset cycle detection times, the signal quality of the initial uplink waveform signal needs to be detected again until the detected quality state of the initial uplink waveform signal is in a 'better state' or a 'holding state'.
On the basis of the foregoing embodiment, preferably, if it is determined that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, the method further includes:
and if the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, reducing the adjustment amplitude of the preset upper threshold and the preset lower threshold, and reducing the value of the preset cyclic detection times.
When the initial uplink waveform signal is detected to have good quality, the adjustment amplitude of the preset upper threshold and the preset lower threshold of the signal detection is reduced, and meanwhile, the value of the preset cycle detection frequency is reduced.
When the initial uplink waveform signal state is good, the waveform selection does not need to be adjusted all the time, the original state is kept, and the cyclic detection judgment is not needed all the time. Therefore, the modification to the preset upper threshold and the preset lower threshold is reduced. The value of the preset cycle number is reduced, the cycle detection number can be reduced, and the uplink transmission efficiency can be improved for the initial uplink waveform signal with better signal quality.
On the basis of the foregoing embodiment, preferably, if it is determined that the signal quality of the initial uplink waveform signal is smaller than the preset lower threshold, the method further includes:
and if the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, increasing the adjustment amplitude of the preset upper threshold and the preset lower threshold, and increasing the value of the preset cyclic detection times.
If the signal quality of the initial uplink waveform signal is between the preset upper threshold and the preset lower threshold, it is indicated that the quality state of the initial uplink waveform signal is a poor state, the adjustment amplitude of the preset upper threshold and the preset lower threshold of the signal detection needs to be increased, and the number of preset cyclic detection times is increased at the same time.
For example, if the initial uplink waveform signal is good at a certain time, the CP-OFDM waveform selection is still reserved; if the signal is poor, the DFT-S-OFDM waveform may be used instead.
On the basis of the foregoing embodiment, preferably, the determining, according to a relationship between the moving speed of the terminal and the signal type threshold, a signal type of the terminal to adjust the initial uplink waveform signal further includes:
if the signal type of the terminal is judged to be a low-speed signal, acquiring a first weight, a second weight and a third weight according to the signal period of the initial uplink waveform signal, the error rate of the initial uplink waveform signal and the signal-to-noise ratio threshold value of the initial uplink waveform signal;
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 difference between the error rate of the initial uplink waveform signal before signal detection and the error rate of the initial uplink waveform signal after signal detection, and the difference between the signal-to-noise ratio of the initial uplink waveform signal before signal detection and the signal-to-noise ratio of the initial uplink waveform signal after signal detection are obtained;
if the weight threshold evaluation coefficient of the initial uplink waveform signal is larger than a preset weight threshold evaluation coefficient, correcting the initial uplink waveform signal;
and if the weight threshold evaluation coefficient of the initial uplink waveform signal is smaller than the preset weight threshold evaluation coefficient, keeping the initial uplink waveform signal unchanged.
For low-speed signals, obtaining a first weight, a second weight and a third weight according to a signal period of an initial uplink waveform signal, an error rate of the initial uplink waveform signal and a signal-to-noise ratio threshold value of the initial uplink waveform signal, and then obtaining a weight threshold evaluation coefficient of the initial uplink waveform signal according to the first weight, the second weight, the third weight, a difference between signal qualities of the initial uplink waveform signal before and after detection, a difference between the error rates of the initial uplink waveform signal before and after detection, and a difference between the signal-to-noise ratios of the initial uplink waveform signal before and after detection.
The weight threshold evaluation coefficient is used for judging whether the obtained first weight, the second weight and the third weight are reasonable or not, comparing the weight threshold evaluation coefficient with a preset weight threshold evaluation coefficient, and if the weight threshold evaluation coefficient is larger than the preset weight threshold evaluation coefficient, the unreasonable setting of the first weight, the second weight and the third weight is shown, and the first weight, the second weight and the third weight need to be corrected.
If the weight threshold evaluation coefficient is smaller than the preset weight threshold evaluation coefficient, the setting of the first weight, the second weight and the third weight is reasonable, and the original initial uplink waveform signal is kept.
On the basis of the foregoing 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, SNR1 represents the signal quality before the initial uplink waveform signal is subjected to signal detection, SNR2 represents the signal quality after the initial uplink waveform signal is subjected to signal detection, T1 represents the error rate before the initial uplink waveform signal is subjected to signal detection, T2 represents the error rate after the initial uplink waveform signal is subjected to signal detection, BLER1 represents the signal-to-noise ratio before the initial uplink waveform signal is subjected to signal detection, and BLER2 represents the signal-to-noise ratio after the initial uplink waveform signal is subjected to signal detection.
The embodiment of the invention carries out differentiation identification of terminal signal types (including high-speed signals and low-speed signals) through Doppler effect frequency offset of initial uplink waveform signals reported by a terminal and the moving speed of the terminal, realizes a differentiation uplink waveform self-adaptive optimization method aiming at different signal types, carries out signal waveform weight threshold score judgment on the low-speed signals based on a user signal period, a bit error rate and a signal-to-noise ratio threshold value, and then carries out uplink waveform self-adaptive optimization; and for high-speed signals, a method based on upper and lower threshold adaptive adjustment is adopted to realize uplink waveform adaptive optimization, so that the problem that the peak average power is high or the frequency domain resource utilization is limited due to fixed uplink waveform transmission threshold setting is solved, the complexity of a frequency spectrum detection algorithm is reduced, and the frequency spectrum transmission performance of a 5G network is effectively improved.
Fig. 2 is a schematic structural diagram of a spectrum efficiency enhancing system according to an embodiment of the present invention, as shown in fig. 2, the system includes an obtaining module 201, a calculating module 202, a determining module 203, and an adjusting module 204, where:
the obtaining module 201 is configured to obtain a moving speed of the terminal according to a doppler frequency offset of an initial uplink waveform signal if it is determined that a peak average power of the terminal is greater than a preset power threshold or a frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, where the initial uplink waveform signal is sent by the terminal;
the calculation module 202 is configured to obtain an effective frequency of the initial uplink waveform signal and a 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 judging module 203 is configured to obtain a signal type threshold according to the effective frequency and the frequency offset amplitude;
the adjusting module 204 is configured to determine a signal type of the terminal according to a relationship between the moving speed of the terminal and the signal type threshold, so as to adjust the initial uplink waveform signal.
First, the obtaining module 201 compares the peak average power of the terminal with a preset power threshold, and if the peak average power is greater than the preset power threshold, it indicates that the peak average power of the terminal is too high, or compares the frequency domain resource utilization rate of the terminal with the preset frequency domain threshold, which indicates that the frequency domain resource utilization of the terminal is limited, and a suitable uplink waveform needs to be selected according to the actual situation of the terminal.
The obtaining module further calculates the moving speed of the terminal according to the Doppler frequency offset of the initial uplink waveform signal sent by the terminal.
The calculating 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 transmitting 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, select a suitable initial uplink waveform signal.
According to the spectrum efficiency enhancement system provided by the embodiment of the invention, the signal type of the terminal is judged according to the moving speed of the terminal, the initial uplink waveform signal is adjusted according to different signal types so as to select a proper uplink waveform signal, and a reasonable threshold value of the uplink waveform signal is set, so that the spectrum transmission performance of the 5G network is improved.
Fig. 3 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 3: processor (processor)310, communication interfaces (Communications)
Interface)320, memory (memory)330, and bus 340, wherein processor 310, communication Interface 320, and memory 330 communicate with each other via bus 340. The communication interface 340 may be used for information transmission between the server and the smart tv. The processor 310 may call logic instructions in the memory 330 to perform the following method:
if the peak average power of the terminal is judged to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of an initial uplink waveform signal, wherein the initial uplink waveform signal is sent by the terminal;
acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal;
acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as to adjust the initial uplink waveform signal.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including:
if the peak average power of the terminal is judged to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of an initial uplink waveform signal, wherein the initial uplink waveform signal is sent by the terminal;
acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal;
acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as to adjust the initial uplink waveform signal.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for spectral efficiency enhancement, comprising:
if the peak average power of the terminal is judged to be larger than a preset power threshold or the frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, acquiring the moving speed of the terminal according to the Doppler frequency offset of an initial uplink waveform signal, wherein the initial uplink waveform signal is sent by the terminal;
acquiring the effective frequency of the initial uplink waveform signal and the frequency offset amplitude of the initial uplink waveform signal according to the transmitting frequency of the initial uplink waveform signal and the moving speed of the terminal;
acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as 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:
if the moving speed of the terminal is greater than the signal type threshold value, the signal type of the terminal is a high-speed signal;
and if the moving speed of the terminal is not greater than the signal class block threshold, the signal type of the terminal is a low-speed signal.
3. The method according to claim 2, wherein the determining the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold to adjust the initial uplink waveform signal specifically includes:
if the signal type of the terminal is judged to be a high-speed signal, detecting the signal quality of the initial uplink waveform signal, and setting a preset upper threshold and a preset lower threshold of signal detection;
if the signal quality of the initial uplink waveform signal is judged to be greater than the preset upper threshold, the terminal takes the CP-OFDM uplink waveform as the initial uplink waveform signal;
if the signal quality of the initial uplink waveform signal is judged to be less than the preset lower threshold, the terminal takes the DFT-S-OFDM uplink waveform as the initial uplink waveform signal;
and if the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold and the current signal quality checking times are less than the preset circulating detection times, detecting the signal quality of the initial uplink waveform signal again until a proper uplink waveform is selected for the terminal.
4. The method of claim 3, wherein if it is determined that the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, then further comprising:
and if the signal quality of the initial uplink waveform signal is greater than the preset upper threshold, reducing the adjustment amplitude of the preset upper threshold and the preset lower threshold, and reducing the value of the preset cyclic detection times.
5. The method of claim 3, wherein if it is determined that the signal quality of the initial uplink waveform signal is less than the preset lower threshold, then further comprising:
and if the signal quality of the initial uplink waveform signal is between the preset lower threshold and the preset upper threshold, increasing the adjustment amplitude of the preset upper threshold and the preset lower threshold, and increasing the value of the preset cyclic detection times.
6. The method according to claim 2, wherein the determining the signal type of the terminal according to the relationship between the moving speed of the terminal and the signal type threshold value to adjust the initial uplink waveform signal further comprises:
if the signal type of the terminal is judged to be a low-speed signal, acquiring a first weight, a second weight and a third weight according to the signal period of the initial uplink waveform signal, the error rate of the initial uplink waveform signal and the signal-to-noise ratio threshold value of the initial uplink waveform signal;
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 difference between the error rate of the initial uplink waveform signal before signal detection and the error rate of the initial uplink waveform signal after signal detection, and the difference between the signal-to-noise ratio of the initial uplink waveform signal before signal detection and the signal-to-noise ratio of the initial uplink waveform signal after signal detection are obtained;
if the weight threshold evaluation coefficient of the initial uplink waveform signal is larger than a preset weight threshold evaluation coefficient, correcting the initial uplink waveform signal;
and if the weight threshold evaluation coefficient of the initial uplink waveform signal is smaller than the preset weight threshold evaluation coefficient, keeping the initial uplink waveform signal unchanged.
7. The method of 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, SNR1 represents the signal quality before the signal detection of the initial uplink waveform signal, SNR2 represents the signal quality after the signal detection of the initial uplink waveform signal, T1 represents the error rate before the signal detection of the initial uplink waveform signal, T2 represents the error rate after the signal detection of the initial uplink waveform signal, BLER1 represents the signal-to-noise ratio before the signal detection of the initial uplink waveform signal, and BLER2 represents the signal-to-noise ratio after the signal detection of the initial uplink waveform signal.
8. A spectral efficiency enhancement system, comprising:
an obtaining module, configured to obtain a moving speed of a terminal according to a doppler frequency offset of an initial uplink waveform signal if it is determined that a peak average power of the terminal is greater than a preset power threshold or a frequency domain resource utilization rate of the terminal is smaller than a preset frequency domain threshold, where the initial uplink waveform signal is sent by the terminal;
a calculating module, configured to obtain an effective frequency of the initial uplink waveform signal and a frequency offset amplitude of the initial uplink waveform signal according to a transmitting frequency of the initial uplink waveform signal and a moving speed of the terminal;
the judging module is used for acquiring a signal type threshold according to the effective frequency and the frequency offset amplitude;
and the adjusting module is used for judging the signal type of the terminal according to the relation between the moving speed of the terminal and the signal type threshold value so as to adjust the initial uplink waveform signal.
9. An electronic device, comprising:
at least one processor, at least one memory, a communication interface, and a bus; wherein the content of the first and second substances,
the processor, the memory and the communication interface complete mutual communication 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 to perform the method of any one of claims 1-7.
10. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1 to 7.
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