A data transmission method based on wireless communication

Abstract

The present invention relates to the technical field of data transmission, and specifically discloses a data transmission method based on wireless communication, including the following steps: Step S1: Measure and record the signal coverage range of the base station; set a distance threshold; within the signal coverage range, mark all receiving ends whose distances between each other are less than the threshold as the same area; Step S2: The base station obtains the data sequence to be sent; sends the data sequence to all receiving ends within the same area through the wireless channel; records the specific time of data transmission; collects the receiving time of each receiving end, so as to obtain the transmission time of each receiving end; compares the sent data sequence with the received sequence, and calculates the bit error rate; Step S3: Based on the transmission time and bit error rate of each receiving end, calculate the transmission quality index of each receiving end; Step S4: Based on the standard deviation of the transmission quality index, determine the quality threshold within the area, and then identify the receiving ends with abnormal transmission quality.

Description

Technical Field

[0001] The present invention relates to the technical field of data transmission, and particularly relates to a data transmission method based on wireless communication. Background Art

[0002] Data transmission refers to the process of transmitting data from one location or device to another location or device through various communication means; the process of data transmission includes data encoding and modulation, signal transmission, signal reception and demodulation, and data quality detection, etc.

[0003] Data quality detection can help detect the accuracy of data transmission in the wireless communication process, timely discover potential problems and correct them, so as to improve the reliability and efficiency of data transmission.

[0004] In the prior art, the base station sends a signal to the receiving end. The data transmission quality in this process is the signal transmission quality. For the evaluation of the data transmission quality at this time, an index representing the data transmission quality is often obtained. After comparing this index with a preset threshold, it is judged whether the data transmission quality is normal according to the comparison result; however, in actual situations, the data transmission quality is often affected by the external environment, resulting in the obtained index being lower than the preset threshold, which may cause misjudgment of the data transmission quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a data transmission method based on wireless communication to solve the above technical problems.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A data transmission method based on wireless communication includes the following steps:

[0008] Step S1: Obtain the signal coverage range of the base station and set a distance threshold; within the signal coverage range, record that several receiving ends with a distance less than the distance threshold between each other belong to the same area;

[0009] Step S2: The base station obtains a data sequence, and sends the data sequence to all receiving ends belonging to the same area through a wireless channel; record the sending time, and obtain the receiving time of each receiving end to obtain the transmission time of the receiving end; and obtain the data sequence received by the receiving end, denoted as the received sequence; compare the data sequence with the received sequence to obtain the bit error rate;

[0010] Step S3: Obtain the transmission quality index of the receiving end according to the transmission time and bit error rate of each receiving end within the same area , where μ is a preset correction coefficient, Er idenotes the bit error rate of the i-th receiver within the same area, Er0 denotes the standard bit error rate, T i denotes the transmission time of the i-th receiver within the same area, T0 denotes the standard transmission time; and according to the transmission quality index of each receiver, a set of transmission quality indexes is obtained;

[0011] Step S4: Obtain the standard deviation s of the set of transmission quality indexes, and obtain the quality threshold Qt = TQI ave + z*s, where TQI ave is the set of transmission quality indexes, and z is a preset multiple threshold; according to the quality threshold, the receivers with abnormal transmission quality are selected.

[0012] As a further solution of the present invention: the obtaining process of the distance threshold includes:

[0013] Set several distance values, select two monitoring points within the signal coverage range, when the distance between the two monitoring points is different distance values, obtain the air temperatures at the two monitoring points, and obtain the difference between the air temperatures at the two monitoring points, denoted as the temperature difference; according to the temperature differences at different distance values, obtain a set of temperature differences; select the minimum value in the set of temperature differences, and denote the distance value corresponding to the minimum value as the distance threshold.

[0014] As a further solution of the present invention: the obtaining process of the distance threshold includes:

[0015] When the minimum value in the set of temperature differences is two identical temperature differences, obtain the two distance values corresponding to the two identical temperature differences, and obtain the average value of the two distance values, denoted as the distance threshold.

[0016] As a further solution of the present invention: the obtaining process of the transmission time includes: denote the sending time as t0, and denote the receiving time of the receiver as t1, then the transmission time T = t1 - t0 is obtained.

[0017] As a further solution of the present invention: the obtaining process of the bit error rate includes: obtain the total number of bytes of the data sequence, denoted as N, and compare the data on each byte of the received sequence with the data on each byte of the data sequence bit by bit, obtain the number of bytes with differences between the received sequence and the data sequence, denoted as n, and obtain the bit error rate Er = n / N.

[0018] As a further solution of the present invention: the obtaining process of the standard bit error rate and the standard transmission time includes:

[0019] Obtain historical transmission data, where the historical transmission data includes the historical bit error rate and the historical transmission time when the historical transmission data is transmitted; obtain the average value of the historical bit error rate, denoted as the standard bit error rate; and obtain the average value of the historical transmission time, denoted as the standard transmission time.

[0020] As a further solution of the present invention: The process of selecting the receiving end with abnormal transmission quality according to the quality threshold includes:

[0021] If the transmission quality index TQI of the receiving end ≤ Qt, then the transmission quality of the receiving end is abnormal; if the transmission quality index TQI of the receiving end > Qt, then the transmission quality of the receiving end is normal.

[0022] As a further solution of the present invention: If there is a separate receiving end in the signal coverage area and it does not belong to the same area as the other receiving ends, denote this receiving end as the target receiving end, then the process of obtaining the transmission quality index of the target receiving end includes:

[0023] Obtain the distances between each receiving end and the base station, and obtain the transmission quality index of each receiving end; fit the transmission quality curve according to the transmission quality indices at different distances; obtain the distance between the target receiving end and the base station, and obtain the predicted transmission quality index TQI according to the transmission quality curve 预测 ; obtain the transmission quality index TQI´ of the target receiving end according to the bit error rate and transmission time of the target receiving end;

[0024] If TQI´ ∈ [TQI 预测 - ε ,TQI 预测 + ε , where ε is a preset error threshold and ε > 0, then the transmission quality of the target receiving end is normal; otherwise, the transmission quality of the target receiving end is abnormal.

[0025] The beneficial effects of the present invention:

[0026] By calculating the bit error rate, the present invention can evaluate the accuracy of data transmission, thereby taking measures to optimize the transmission process and reduce data errors; by analyzing the transmission quality indices of each receiving end, it can identify the receiving ends with poor performance, providing a basis for network optimization, such as adjusting the signal strength or reconfiguring network resources; by monitoring the transmission quality and promptly identifying abnormal receiving ends, it can reduce the occurrence of faults during data transmission, improving the stability and reliability of the entire wireless communication system; according to the data transmission quality of all receiving ends within the same region, a dynamic quality transmission index threshold for each region can be obtained in real time, and based on this dynamic threshold, the data transmission quality of the receiving end can be judged more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 is a schematic flowchart of a data transmission method based on wireless communication according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] 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 are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 As shown, the present invention is a data transmission method based on wireless communication, including the following steps:

[0031] Step S1: Obtain the signal coverage range of the base station and set a distance threshold; within the signal coverage range, record that several receiving ends with a distance less than the distance threshold between each other belong to the same region;

[0032] It can be understood that the signal coverage range is the maximum distance or area within which a base station can effectively transmit signals; this is usually achieved through technical means such as signal strength testing, geographic information system (GIS) analysis, etc.; within the signal coverage range, all receiving ends with a distance less than the set distance threshold between each other are grouped into the same region; the purpose of this is to better manage and optimize the communication quality of these receiving ends; grouping the receiving ends can help more precisely monitor and adjust network parameters;

[0033] It should be noted that when the base station transmits data to all the receivers in the same area, since these receivers are geographically close, it can be considered that the environmental factors they are in are approximately the same; this similarity helps to simplify the analysis and processing of various influencing factors that may occur during the data transmission process, thereby improving the reliability and efficiency of the entire wireless communication system;

[0034] In a preferred embodiment of the present invention, the process of obtaining the distance threshold includes:

[0035] Set a number of distance values. Select two monitoring points within the signal coverage range. When the distance between the two monitoring points is different distance values, obtain the temperatures at the two monitoring points, and obtain the difference between the temperatures at the two monitoring points, denoted as the temperature difference; according to the temperature differences at different distance values, obtain a temperature difference set; select the minimum value in the temperature difference set, and denote the distance value corresponding to the minimum value as the distance threshold;

[0036] The process of obtaining the distance threshold includes:

[0037] When the minimum value in the temperature difference set is two identical temperature differences, obtain the two distance values corresponding to the two identical temperature differences, obtain the average value of the two distance values, and denote it as the distance threshold;

[0038] It should be noted that the process of setting the distance value includes:

[0039] Set the initial distance value to 0, set the distance interval threshold, and the setting range of the distance interval threshold belongs to [1m, 5m]; increment the initial distance threshold according to the distance interval threshold to obtain a number of distance values;

[0040] It can be understood that two monitoring points are selected within the signal coverage range, and the distance between the two monitoring points will correspond to one of the previously set distance values; for each pair of selected monitoring points, obtain the temperature between them and calculate the temperature difference between the two monitoring points; this temperature difference reflects the change in temperature at different distances; according to the temperature differences at different distance values, obtain a temperature difference set; this set contains the temperature differences between each pair of monitoring points at all set distances; select the smallest temperature difference value from the temperature difference set; the minimum value represents the situation where the temperature change is the smallest among all considered distances; if the minimum temperature difference is unique, then the distance value corresponding to this minimum temperature difference is the distance threshold; if the minimum temperature difference has two identical values, then the average value of the two distance values corresponding to the two identical temperature differences will be denoted as the distance threshold;

[0041] Step S2: The base station acquires a data sequence and sends the data sequence to all receivers belonging to the same area via a wireless channel; records the transmission time, and acquires the reception time of each receiver to obtain the transmission time of the receiver; and acquires the data sequence received by the receiver, denoted as the received sequence; compares the data sequence with the received sequence to obtain the bit error rate.

[0042] It can be understood that, in order to evaluate the quality of communication, the base station compares the original data sequence with the received sequence; through the comparison, it can find out which data has errors during the transmission process, so as to calculate the bit error rate; the bit error rate is an important indicator to measure the accuracy of data transmission, which represents the ratio of the number of error bits to the total number of bits; according to the comparison result, the base station can calculate the bit error rate; the bit error rate can reflect the accuracy of data during the transmission process.

[0043] In a preferred embodiment of the present invention, the process of obtaining the transmission time includes: denoting the transmission time as t0 and denoting the reception time of the receiver as t1, then the transmission time T = t1 - t0 is obtained.

[0044] It can be understood that the transmission time reflects the duration required for data to be transmitted in the wireless channel.

[0045] In a preferred embodiment of the present invention, the process of obtaining the bit error rate includes: acquiring the total number of bytes of the data sequence, denoted as N, and comparing the data on each byte of the received sequence with the data on each byte of the data sequence bit by bit to obtain the number of bytes with differences between the received sequence and the data sequence, denoted as n, and obtaining the bit error rate Er = n / N.

[0046] It can be understood that the process of bit-by-bit comparison is to compare the data on each byte of the received sequence with the data sequence to check whether it is the same as the original data; and during the bit-by-bit comparison process, the number of bytes with differences is recorded.

[0047] Step S3: Obtain the transmission quality index of the receiver according to the transmission time and bit error rate of each receiver in the same area. , where μ is a preset correction coefficient, Er i represents the bit error rate of the i-th receiver in the same area, Er0 represents the standard bit error rate, T i represents the transmission time of the i-th receiver in the same area, T0 represents the standard transmission time; and obtain the set of transmission quality indexes according to the transmission quality indexes of each receiver.

[0048] It is understandable that the correction coefficient is obtained from experimental data and is used to adjust the contribution weights of the bit error rate and transmission time to TQI; this formula reflects the deviation degrees of the bit error rate and transmission time at the receiving end from the standard values; by analyzing the TQI set, the communication quality differences between different receiving ends and the communication status of the entire area can be understood; if the TQI value of a certain receiving end is abnormally high, it may indicate that there are signal interferences, hardware failures or other problems affecting the communication quality at this receiving end; in addition, TQI can also be used to optimize network configurations, such as adjusting the positions or powers of base stations, to improve the overall communication quality;

[0049] In a preferred embodiment of the present invention, the obtaining processes of the standard bit error rate and the standard transmission time include:

[0050] Obtain historical transmission data, where the historical transmission data includes the historical bit error rate and historical transmission time when the historical transmission data is transmitted; obtain the average value of the historical bit error rate, denoted as the standard bit error rate; and obtain the average value of the historical transmission time, denoted as the standard transmission time;

[0051] It is understandable that the average value of historical data can represent past typical situations and reflects the average performance of the system over a period of time; by using this benchmark, a reasonable comparison of the current performance can be made; the average value is a relatively stable statistic and will not fluctuate significantly due to individual extreme data points; this makes it a reliable reference point and helps to reduce the influence of accidental factors on the evaluation; using the average value as the benchmark can simplify the performance comparison under different time periods or different conditions; for example, by comparing the current bit error rate or transmission time with the historical average value, the change trend of the performance can be intuitively seen;

[0052] Step S4: Obtain the standard deviation s of the transmission quality index set, and obtain the quality threshold Qt = TQI ave + z * s, where TQI ave is the transmission quality index set, and z is a preset multiple threshold; according to the quality threshold, select the receiving ends with abnormal transmission quality;

[0053] It is understandable that the standard deviation is an index in statistics to measure the degree of data dispersion and reflects the deviation degrees of the TQI values of each receiving end from the average value; the multiple threshold is obtained from experimental data and is used to judge whether the transmission quality of the receiving end is abnormal;

[0054] In a preferred embodiment of the present invention, the process of selecting the receiving ends with abnormal transmission quality according to the quality threshold includes:

[0055] If the transmission quality index TQI of the receiving end ≤ Qt, there is an abnormality in the transmission quality of the receiving end; if the transmission quality index TQI of the receiving end > Qt, there is no abnormality in the transmission quality of the receiving end;

[0056] In a preferred embodiment of the present invention, if there is a separate receiving end in the signal coverage area and it does not belong to the same area as the other receiving ends, and this receiving end is denoted as the target receiving end, then the process of obtaining the transmission quality index of the target receiving end includes:

[0057] Obtain the distances between each receiving end and the base station, and obtain the transmission quality index of each receiving end; according to the transmission quality indexes at different distances, fit to obtain a transmission quality curve; obtain the distance between the target receiving end and the base station, and obtain the predicted transmission quality index TQI according to the transmission quality curve 预测 ; according to the bit error rate and transmission time of the target receiving end, obtain the transmission quality index TQI´ of the target receiving end;

[0058] If TQI´ ∈ [TQI 预测 - ε ,TQI 预测 + ε , where ε is a preset error threshold and ε > 0, then there is no abnormality in the transmission quality of the target receiving end; otherwise, there is an abnormality in the transmission quality of the target receiving end;

[0059] It should be noted that the process of obtaining the transmission quality curve includes:

[0060] Taking the distance value as the abscissa and the transmission quality index as the ordinate, establish a rectangular coordinate system; convert the transmission quality indexes corresponding to different distance values into coordinate points on the rectangular coordinate system, and obtain several coordinate points on the rectangular coordinate system; connect each coordinate point with a smooth curve, and denote the curve as the transmission quality curve;

[0061] It can be understood that the main external environmental factor affecting each receiving end in the signal coverage area is the distance. The farther the distance, the worse the transmission effect of the received signal; therefore, according to the change of the transmission quality indexes of all receiving ends in the same area with the distance, predict the transmission quality index of the target receiving end to obtain the predicted transmission quality index; and compare the actual transmission quality index of the target receiving end with the predicted transmission quality index to judge whether the data transmission of the target receiving end is abnormal.

[0062] The above has described in detail an embodiment of the present invention, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A data transmission method based on wireless communication, characterized in that: The following steps are involved: Step S1: Acquire the signal coverage range of the base station and set a distance threshold; within the signal coverage range, record that a number of receiving terminals whose distances between each other are less than the distance threshold belong to the same area; Step S2: the base station acquires a data sequence, which is data to be sent by the base station; and sends the data sequence to all receiving terminals belonging to the same area through a wireless channel; Record the sending time, and obtain the receiving time of each receiving end to obtain the transmission time of the receiving end; and obtain the data sequence received by the receiving end, recorded as the receiving sequence; compare the data sequence with the receiving sequence to obtain the bit error rate; Step S3: Obtain the transmission quality index of the receiving end according to the transmission time and bit error rate of each receiving end in the same area ,in μ is the preset correction coefficient, Er i represents the bit error rate of the i-th receiving end in the same area, Er0 represents the standard bit error rate, T i represents the transmission time of the i-th receiving end in the same area, T0 represents the standard transmission time; and according to the transmission quality index of each receiving end, a transmission quality index set is obtained; Step S4: Obtain the standard deviation s of the transmission quality index set to obtain the quality threshold Qt=TQI in the area ave +z×s, where TQI ave is the mean of each element in the transmission quality index set, and z is a preset multiple threshold; according to the quality threshold, a receiving end with abnormal transmission quality is selected.

2. A data transmission method based on wireless communication according to claim 1, characterized in that: In step S1, the process of obtaining the distance threshold includes: Set several distance values, select two monitoring points within the signal coverage range, and when the distance between the two monitoring points is different distance values, obtain the temperature at the two monitoring points, and obtain the difference in temperature at the two monitoring points, which is recorded as the temperature difference; obtain a temperature difference set based on the temperature difference at different distance values; select the minimum value in the temperature difference set, and record the distance value corresponding to the minimum value as the distance threshold.

3. A data transmission method based on wireless communication according to claim 2, characterized in that: In step S1, the process of obtaining the distance threshold includes: When the minimum value in the temperature difference set is two identical temperature differences, two distance values ​​corresponding to the two identical temperature differences are obtained, and an average value of the two distance values ​​is obtained, which is recorded as the distance threshold.

4. A data transmission method based on wireless communication according to claim 1, characterized in that: In step S2, the process of obtaining the transmission time includes: recording the sending time as t0, recording the receiving time of the receiving end as t1, and obtaining the transmission time T=t1-t0.

5. The method for data transmission based on wireless communication according to claim 1, characterized in that: In step S2, the process of obtaining the bit error rate includes: The total number of bytes of the data sequence is obtained, recorded as N, and the data on each byte of the received sequence is compared bit by bit with the data on each byte of the data sequence to obtain the number of bytes that differ between the received sequence and the data sequence, recorded as n, and the bit error rate Er=n / N is obtained.

6. A data transmission method based on wireless communication according to claim 1, characterized in that: In step S3, the process of obtaining the standard bit error rate and the standard transmission time includes: Obtain historical transmission data, the historical transmission data including historical bit error rate and historical transmission time when the historical transmission data is transmitted; obtain the average value of the historical bit error rate, recorded as the standard bit error rate; and obtain the average value of the historical transmission time, recorded as the standard transmission time.

7. A data transmission method based on wireless communication according to claim 1, characterized in that: In step S4, the process of selecting a receiving end with abnormal transmission quality according to the quality threshold includes: If the transmission quality index TQI of the receiving end is ≤Qt, then there is an abnormality in the transmission quality of the receiving end; if the transmission quality index TQI of the receiving end is >Qt, then there is no abnormality in the transmission quality of the receiving end.

8. The data transmission method based on wireless communication according to claim 1, characterized in that: In step S1, if there is a separate receiving end in the signal coverage range and it does not belong to the same area as the other receiving ends, the receiving end is recorded as the target receiving end, and the process of obtaining the transmission quality index of the target receiving end includes: Obtain the distance between each receiving end and the base station, and obtain the transmission quality index of each receiving end; according to the transmission quality index at different distances, fit to obtain a transmission quality curve; obtain the distance between the target receiving end and the base station, and obtain a predicted transmission quality index TQI according to the transmission quality curve 预测 ; According to the bit error rate and transmission time of the target receiving end, the transmission quality index TQI' of the target receiving end is obtained; If TQI´∈[TQI prediction-ε, TQI prediction+ε], where ε is a preset error threshold and ε>0, then there is no abnormality in the transmission quality of the target receiving end; otherwise, there is an abnormality in the transmission quality of the target receiving end.

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