阅读说明：本技术 数字型一拖四微功率直放站 (Digital one-to-four micropower repeater ) 是由 李海东 庞洪洋 李海龙 李晓然 金海涛 宋海军 于 2020-12-18 设计创作，主要内容包括：本发明公开了数字型一拖四微功率直放站,涉及通信技术领域,包括数据采集模块、数据分析模块、控制中心、增益分析模块、增益调节模块、底噪处理模块、底噪分析模块和存储模块；数据分析模块用于对中频信号的周期能量值进行分析,判断其是否为噪声信号,实现了直放站的底噪抑制；同时底噪处理模块用于将噪声信号进行降噪处理,得到降噪处理记录,底噪分析模块用于对降噪处理记录进行综合评价,获取得到底噪系数,根据底噪系数及时预警,方便工作人员对数字直放站进行维护,提高工作效率；增益分析模块用于接收中频信号并对中频信号进行分析,判断是否需要对中频信号进行增益调节,实现自动增益调节功能,优化客户的通信体验感。(The invention discloses a digital one-to-four micropower repeater, which relates to the technical field of communication and comprises a data acquisition module, a data analysis module, a control center, a gain analysis module, a gain adjustment module, a bottom noise processing module, a bottom noise analysis module and a storage module; the data analysis module is used for analyzing the periodic energy value of the intermediate frequency signal and judging whether the periodic energy value is a noise signal or not, so that the bottom noise suppression of the repeater is realized; meanwhile, the bottom noise processing module is used for carrying out noise reduction processing on the noise signal to obtain a noise reduction processing record, the bottom noise analysis module is used for carrying out comprehensive evaluation on the noise reduction processing record to obtain a bottom noise coefficient, early warning is carried out in time according to the bottom noise coefficient, a worker can conveniently maintain the digital repeater, and the working efficiency is improved; the gain analysis module is used for receiving the intermediate frequency signal, analyzing the intermediate frequency signal, judging whether gain adjustment needs to be carried out on the intermediate frequency signal or not, realizing an automatic gain adjustment function and optimizing the communication experience of a client.)

1. The digital one-to-four micro-power repeater is characterized by comprising a data acquisition module, a data analysis module, a control center, a gain analysis module, a gain adjustment module, a bottom noise processing module, a bottom noise analysis module and a storage module;

the data acquisition module is used for acquiring the periodic energy value of the intermediate frequency signal processed by the uplink covering end or the access end of the digital repeater and transmitting the periodic energy value of the intermediate frequency signal to the data analysis module, the data analysis module is used for receiving the periodic energy value of the intermediate frequency signal and analyzing the periodic energy value of the intermediate frequency signal, when the periodic energy value of the intermediate frequency signal is greater than or equal to a set periodic energy threshold value, the intermediate frequency signal is output, and when the periodic energy value of the intermediate frequency signal is less than the set periodic energy threshold value, the intermediate frequency signal is marked as a noise signal and a noise signal is output;

the data analysis module is used for transmitting the intermediate frequency signal, the noise signal and the periodic energy value to the control center, and the control center is used for transmitting the intermediate frequency signal to the gain analysis module when receiving the intermediate frequency signal; the gain analysis module is used for receiving the intermediate frequency signal, analyzing the intermediate frequency signal and judging whether the gain adjustment of the intermediate frequency signal is needed or not;

the control center is used for transmitting the noise signal to the bottom noise processing module when receiving the noise signal, and the bottom noise processing module is used for carrying out noise reduction processing on the noise signal to generate a noise reduction processing record;

and the bottom noise analysis module is used for comprehensively evaluating the noise reduction processing records with the time stamps stored in the storage module.

2. The digital one-driving-four micropower repeater as claimed in claim 1, wherein the specific analysis steps of the data analysis module are as follows:

the method comprises the following steps: when the digital repeater starts to receive the intermediate frequency signal, the data acquisition module acquires a periodic energy value of the intermediate frequency signal according to the acquisition interval duration corresponding to the digital repeater, wherein the periodic energy value is obtained by accumulating the energy of a plurality of continuous bit data and averaging;

step two: comparing the periodic energy value of the intermediate frequency signal with a set periodic energy threshold value;

when the period energy value is greater than or equal to the set period energy threshold value and the time when the period energy value is greater than or equal to the set period energy threshold value exceeds a first preset time, the carrier frequency is indicated to have signal input, the received signal is not noise, and the received intermediate frequency signal is output at the moment;

when the period energy value is smaller than the set period energy threshold value and the time that the period energy value is smaller than the set period energy threshold value exceeds a second preset time, the carrier frequency is indicated to have no signal input, and if the received signal is noise, the intermediate frequency signal is marked as a noise signal and the noise signal is output.

3. The digital one-driving-four micropower repeater as claimed in claim 1, wherein the specific analysis steps of the gain analysis module are as follows:

VV 1: filtering the received intermediate frequency signal to obtain intermediate frequency signal amplitude information; collecting amplitude information of the intermediate frequency signal according to a preset collection interval duration to generate an amplitude information group ZFm;

VV 2: calculating a maximum early warning value and a minimum early warning value of the amplitude according to the received m pieces of amplitude information; the method comprises the following specific steps:

VV 21: calculating an average amplitude value ZFavg of the m pieces of amplitude value information; m is more than or equal to 8;

VV 22: traversing the amplitude information group ZFm, acquiring ZFm maximum value and marking as ZFMax, acquiring ZFm minimum value and marking as ZFMin;

VV 23: calculating a highest amplitude early warning value Z1 by combining the average amplitude ZFavg and the maximum value ZFMax; the specific calculation formula is as follows: z1 ═ ZFmax + (ZFmax-ZFavg) xf, where f is the early warning threshold;

calculating an amplitude minimum early warning value Z2 by combining the average amplitude ZFavg and the minimum value ZFMin; the specific calculation formula is as follows: z2 ═ ZFmin- (ZFavg-ZFmin) × f;

VV 3: acquiring the (m + 1) th amplitude information; and labeled ZFm + 1;

comparing ZFm +1 with the amplitude highest warning value Z1 and the amplitude lowest warning value Z2;

if ZFm +1 is greater than or equal to Z1, generating a regulating signal;

if ZFm +1 is less than or equal to Z2, generating a regulating signal;

if Z2< ZFm +1< Z1, a normal signal is generated;

VV 4: transmitting the adjusting signal to a gain adjusting module, wherein the gain adjusting module performs gain adjustment on the intermediate frequency signal after receiving the adjusting signal, and adjusts the amplitude of the intermediate frequency signal to be between a lowest amplitude early warning value Z2 and a highest amplitude early warning value Z1;

VV 5: let m be m +1 and execute step VV21 again;

the gain adjusting module realizes gain adjustment by controlling the programmable gain amplifying circuit.

4. The digital one-driving-four micropower repeater as claimed in claim 1, wherein the bottom noise processing module is configured to perform noise reduction processing on the noise signal to generate a noise reduction processing record; the specific treatment steps are as follows:

s1: when a noise signal is received, the bottom noise processing module starts to operate, and the moment when the noise signal is received is marked as the moment when the noise reduction processing starts;

s2: acquiring a period energy value of a corresponding noise signal, and marking as NE 1;

when NE1 is more than or equal to L1, marking the noise reduction processing level carried out at the moment as advanced noise reduction processing;

when L2 is not more than NE1< L1, marking the noise reduction processing level performed at the moment as middle-level noise reduction processing;

when NE1< L2, the noise reduction processing level performed at this time is marked as primary noise reduction processing; wherein L1 and L2 are both preset values and L1> L2;

s3: continuing to pay attention to the period energy value NE1, when NE1 is greater than or equal to the set period energy threshold, ending the operation of the bottom noise processing module, and marking the time when the operation of the bottom noise processing module is ended as the noise reduction processing end time;

calculating the time difference between the noise reduction processing ending time and the noise reduction processing starting time to obtain the noise reduction processing duration;

the bottom noise processing module is used for fusing the noise reduction processing level and the noise reduction processing duration to form a noise reduction processing record and transmitting the noise reduction processing record to the control center, and the control center is used for stamping a timestamp on the noise reduction processing record and transmitting the timestamp to the storage module for real-time storage.

5. The digital one-driving-four micropower repeater as claimed in claim 1, wherein the bottom noise analyzing module comprises the following specific working steps:

SS 1: acquiring a noise reduction record within three days before the current time of the system according to the timestamp;

accumulating the times of advanced noise reduction processing to form advanced frequencies according to the noise reduction processing levels in the noise reduction processing records, marking the advanced frequencies as P1, accumulating the noise reduction processing time length of the advanced noise reduction processing to form advanced total time length, and marking the advanced total time length as PS 1;

obtaining a high-level influence coefficient G1 by using a formula G1 ═ P1 xA 1+ PS1 xA 2, wherein A1 and A2 are preset coefficient factors;

SS 2: accumulating the times of the middle-level noise reduction processing to form middle-level frequency, marking as P2, accumulating the noise reduction processing duration of the middle-level noise reduction processing to form middle-level total duration, and marking as PS 2;

obtaining a middle-level influence coefficient G2 by using a formula G2 ═ P2 xA 3+ PS2 xA 4, wherein A3 and A4 are preset coefficient factors;

SS 3: accumulating the times of the primary noise reduction processing to form a primary frequency, marking the primary frequency as P3, accumulating the noise reduction processing time length of the primary noise reduction processing to form a primary total time length, and marking the primary total time length as PS 3;

obtaining a primary influence coefficient G3 by using a formula G3 ═ P3 xA 5+ PS3 xA 6, wherein A5 and A6 are preset coefficient factors;

SS 4: carrying out normalization processing on the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient and taking the numerical values of the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient;

obtaining a base noise coefficient GD by using a formula GD of G1 × B1+ G2 × B2+ G3 × B3, wherein B1, B2, and B3 are all preset coefficient factors, and B1> B2> B3;

SS 5: comparing the background noise coefficient GD with a set background noise coefficient threshold;

when GD > presume the threshold value of the noise floor coefficient, produce the early warning signal;

the bottom noise analysis module is used for transmitting the early warning signal to the control center, the control center is used for receiving the early warning signal and driving and controlling the alarm module to give an alarm when receiving the early warning signal, and meanwhile, the automatic driving display module displays that the bottom noise problem of the digital repeater is serious and maintenance is recommended.

6. The digital one-to-four micropower repeater as claimed in claim 2, wherein the calculation step of the acquisition interval duration corresponding to the digital repeater is:

v1: acquiring the operation year, maintenance record and model of the digital repeater; the maintenance records comprise maintenance times and maintenance time;

v2: the operating life of the digital repeater is marked as N1; marking the maintenance times of the digital repeater as C1;

sequencing the maintenance time of the digital repeater according to time, acquiring the latest maintenance time from the current time of the system, calculating the time difference between the latest maintenance time and the current time of the system to obtain a buffer time length, and marking the buffer time length as HT;

v3: setting all models of the digital repeater to correspond to a preset value; matching the model corresponding to the digital repeater with all models of the digital repeater to obtain a corresponding preset value, and marking the preset value as W1;

v4: normalizing the operation age, the maintenance times, the buffering time and a preset value and taking the numerical values;

acquiring acquisition interval duration TC corresponding to the digital repeater by using a formula TC (mu x) [ (1/N1 × a1+1/C1 × a2+1/HT × a3+ W1 × a4) -1.23569 ]; wherein a1, a2, a3 and a4 are all preset proportionality coefficients, and μ is a correction factor and takes the value of 0.8739.

Technical Field

The invention relates to the technical field of communication, in particular to a digital one-to-four micro-power repeater.

Background

The coverage of the wireless network is an important component of network construction, and with diversification of coverage environments, the traditional base station coverage cannot meet the requirements of modern network construction. In order to expand the coverage of the base station and enhance the coverage effect of the base station, operators introduce repeaters in the wireless coverage environment. The repeater generally comprises an access end and a far end, can be directly coupled with a radio frequency signal of a base station end, utilizes a network cable, an optical fiber and the like to complete signal transmission, and completes the extending coverage of the signal through a far-end device. At present, digital optical fiber repeaters are commonly used.

The repeater can improve the network coverage effect and enlarge the network coverage range, but the accumulation of the system background noise is caused by the cascade use of multi-stage equipment, so that the background noise is raised. Too high bottom noise can reduce the receiving sensitivity of the base station, and cause the uplink and downlink signals in a coverage area to be seriously unbalanced, and the problems of call drop and the like in the communication process. Therefore, the suppression of the background noise rise is a key step for ensuring the network coverage performance.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a digital one-to-four micropower repeater. The method comprises the steps of acquiring the periodic energy value of the intermediate frequency signal processed by the uplink covering end or the access end of the digital repeater, comparing the periodic energy value of the intermediate frequency signal with a set periodic energy threshold value, and outputting the received intermediate frequency signal according to the comparison result or indicating that the repeater has no signal input, wherein the received intermediate frequency signal is noise, so that the bottom noise suppression of the repeater is realized; meanwhile, the bottom noise processing module is used for carrying out noise reduction processing on the noise signal to obtain a noise reduction processing record, the bottom noise analysis module is used for carrying out comprehensive evaluation on the noise reduction processing record to obtain a bottom noise coefficient, early warning is carried out in time according to the bottom noise coefficient, a worker can conveniently maintain the digital repeater, and the working efficiency is improved; the gain analysis module is used for receiving the intermediate frequency signal, analyzing the intermediate frequency signal, judging whether gain adjustment needs to be carried out on the intermediate frequency signal or not, realizing an automatic gain adjustment function and optimizing the communication experience of a client.

The purpose of the invention can be realized by the following technical scheme:

the digital one-to-four micro-power repeater comprises a data acquisition module, a data analysis module, a control center, a gain analysis module, a gain adjustment module, a bottom noise processing module, a bottom noise analysis module and a storage module;

the data acquisition module is used for acquiring the periodic energy value of the intermediate frequency signal processed by the uplink covering end or the access end of the digital repeater and transmitting the periodic energy value of the intermediate frequency signal to the data analysis module, the data analysis module is used for receiving the periodic energy value of the intermediate frequency signal and analyzing the periodic energy value of the intermediate frequency signal, when the periodic energy value of the intermediate frequency signal is greater than or equal to a set periodic energy threshold value, the intermediate frequency signal is output, and when the periodic energy value of the intermediate frequency signal is less than the set periodic energy threshold value, the intermediate frequency signal is marked as a noise signal and a noise signal is output; the noise signal indicates that the carrier frequency has no signal input, and noise is received;

the data analysis module is used for transmitting the intermediate frequency signal, the noise signal and the periodic energy value to the control center, and the control center is used for transmitting the intermediate frequency signal to the gain analysis module when receiving the intermediate frequency signal; the gain analysis module is used for receiving the intermediate frequency signal, analyzing the intermediate frequency signal and judging whether the gain adjustment of the intermediate frequency signal is needed or not;

the control center is used for transmitting the noise signal to the bottom noise processing module when receiving the noise signal, and the bottom noise processing module is used for carrying out noise reduction processing on the noise signal to generate a noise reduction processing record;

and the bottom noise analysis module is used for comprehensively evaluating the noise reduction processing records with the time stamps stored in the storage module.

Further, the specific analysis steps of the data analysis module are as follows:

the method comprises the following steps: when the digital repeater starts to receive the intermediate frequency signal, the data acquisition module acquires a periodic energy value of the intermediate frequency signal according to the acquisition interval duration corresponding to the digital repeater, wherein the periodic energy value is obtained by accumulating the energy of a plurality of continuous bit data and averaging;

step two: comparing the periodic energy value of the intermediate frequency signal with a set periodic energy threshold value;

when the period energy value is greater than or equal to the set period energy threshold value and the time when the period energy value is greater than or equal to the set period energy threshold value exceeds a first preset time, the carrier frequency is indicated to have signal input, the received signal is not noise, and the received intermediate frequency signal is output at the moment;

when the period energy value is smaller than the set period energy threshold value and the time that the period energy value is smaller than the set period energy threshold value exceeds a second preset time, the carrier frequency is indicated to have no signal input, and if the received signal is noise, the intermediate frequency signal is marked as a noise signal and the noise signal is output.

Further, the specific analysis steps of the gain analysis module are as follows:

VV 1: filtering the received intermediate frequency signal to obtain intermediate frequency signal amplitude information; collecting amplitude information of the intermediate frequency signal according to a preset collection interval duration to generate an amplitude information group ZFm;

VV 2: calculating a maximum early warning value and a minimum early warning value of the amplitude according to the received m pieces of amplitude information; the method comprises the following specific steps:

VV 21: calculating an average amplitude value ZFavg of the m pieces of amplitude value information; m is more than or equal to 8;

VV 22: traversing the amplitude information group ZFm, acquiring ZFm maximum value and marking as ZFMax, acquiring ZFm minimum value and marking as ZFMin;

VV 23: calculating a highest amplitude early warning value Z1 by combining the average amplitude ZFavg and the maximum value ZFMax; the specific calculation formula is as follows: z1 ═ ZFmax + (ZFmax-ZFavg) xf, where f is the early warning threshold;

calculating an amplitude minimum early warning value Z2 by combining the average amplitude ZFavg and the minimum value ZFMin; the specific calculation formula is as follows: z2 ═ ZFmin- (ZFavg-ZFmin) × f;

VV 3: acquiring the (m + 1) th amplitude information; and labeled ZFm + 1;

comparing ZFm +1 with the amplitude highest warning value Z1 and the amplitude lowest warning value Z2;

if ZFm +1 is greater than or equal to Z1, generating a regulating signal;

if ZFm +1 is less than or equal to Z2, generating a regulating signal;

if Z2< ZFm +1< Z1, a normal signal is generated;

VV 4: transmitting the adjusting signal to a gain adjusting module, wherein the gain adjusting module performs gain adjustment on the intermediate frequency signal after receiving the adjusting signal, and adjusts the amplitude of the intermediate frequency signal to be between a lowest amplitude early warning value Z2 and a highest amplitude early warning value Z1;

VV 5: let m be m +1 and execute step VV21 again;

the gain adjusting module realizes gain adjustment by controlling the programmable gain amplifying circuit.

Further, the bottom noise processing module is used for performing noise reduction processing on the noise signal to generate a noise reduction processing record; the specific treatment steps are as follows:

s1: when a noise signal is received, the bottom noise processing module starts to operate, and the moment when the noise signal is received is marked as the moment when the noise reduction processing starts;

s2: acquiring a period energy value of a corresponding noise signal, and marking as NE 1;

when NE1 is more than or equal to L1, marking the noise reduction processing level carried out at the moment as advanced noise reduction processing;

when L2 is not more than NE1< L1, marking the noise reduction processing level performed at the moment as middle-level noise reduction processing;

when NE1< L2, the noise reduction processing level performed at this time is marked as primary noise reduction processing; wherein L1 and L2 are both preset values and L1> L2;

s3: continuing to pay attention to the period energy value NE1, when NE1 is greater than or equal to the set period energy threshold, ending the operation of the bottom noise processing module, and marking the time when the operation of the bottom noise processing module is ended as the noise reduction processing end time;

calculating the time difference between the noise reduction processing ending time and the noise reduction processing starting time to obtain the noise reduction processing duration;

the bottom noise processing module is used for fusing the noise reduction processing level and the noise reduction processing duration to form a noise reduction processing record and transmitting the noise reduction processing record to the control center, and the control center is used for stamping a timestamp on the noise reduction processing record and transmitting the timestamp to the storage module for real-time storage.

Further, the specific working steps of the background noise analysis module are as follows:

SS 1: acquiring a noise reduction record within three days before the current time of the system according to the timestamp;

accumulating the times of advanced noise reduction processing to form advanced frequencies according to the noise reduction processing levels in the noise reduction processing records, marking the advanced frequencies as P1, accumulating the noise reduction processing time length of the advanced noise reduction processing to form advanced total time length, and marking the advanced total time length as PS 1;

obtaining a high-level influence coefficient G1 by using a formula G1 ═ P1 xA 1+ PS1 xA 2, wherein A1 and A2 are preset coefficient factors;

SS 2: accumulating the times of the middle-level noise reduction processing to form middle-level frequency, marking as P2, accumulating the noise reduction processing duration of the middle-level noise reduction processing to form middle-level total duration, and marking as PS 2;

obtaining a middle-level influence coefficient G2 by using a formula G2 ═ P2 xA 3+ PS2 xA 4, wherein A3 and A4 are preset coefficient factors;

SS 3: accumulating the times of the primary noise reduction processing to form a primary frequency, marking the primary frequency as P3, accumulating the noise reduction processing time length of the primary noise reduction processing to form a primary total time length, and marking the primary total time length as PS 3;

obtaining a primary influence coefficient G3 by using a formula G3 ═ P3 xA 5+ PS3 xA 6, wherein A5 and A6 are preset coefficient factors;

SS 4: carrying out normalization processing on the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient and taking the numerical values of the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient;

obtaining a base noise coefficient GD by using a formula GD of G1 × B1+ G2 × B2+ G3 × B3, wherein B1, B2, and B3 are all preset coefficient factors, and B1> B2> B3;

SS 5: comparing the background noise coefficient GD with a set background noise coefficient threshold;

when GD > presume the threshold value of the noise floor coefficient, produce the early warning signal;

the bottom noise analysis module is used for transmitting the early warning signal to the control center, the control center is used for receiving the early warning signal and driving and controlling the alarm module to give an alarm when receiving the early warning signal, and meanwhile, the automatic driving display module displays that the bottom noise problem of the digital repeater is serious and maintenance is recommended.

Further, the calculation step of the acquisition interval duration corresponding to the digital repeater is as follows:

v1: acquiring the operation year, maintenance record and model of the digital repeater; the maintenance records comprise maintenance times and maintenance time;

v2: the operating life of the digital repeater is marked as N1; marking the maintenance times of the digital repeater as C1;

sequencing the maintenance time of the digital repeater according to time, acquiring the latest maintenance time from the current time of the system, calculating the time difference between the latest maintenance time and the current time of the system to obtain a buffer time length, and marking the buffer time length as HT;

v3: setting all models of the digital repeater to correspond to a preset value; matching the model corresponding to the digital repeater with all models of the digital repeater to obtain a corresponding preset value, and marking the preset value as W1;

v4: normalizing the operation age, the maintenance times, the buffering time and a preset value and taking the numerical values;

acquiring acquisition interval duration TC corresponding to the digital repeater by using a formula TC (mu x) [ (1/N1 × a1+1/C1 × a2+1/HT × a3+ W1 × a4) -1.23569 ]; wherein a1, a2, a3 and a4 are all preset proportionality coefficients, and μ is a correction factor and takes the value of 0.8739.

The invention has the beneficial effects that:

1. the method comprises the steps of collecting a periodic energy value of an intermediate frequency signal processed by an uplink covering end or an access end of a digital repeater, analyzing the periodic energy value of the intermediate frequency signal, and comparing the periodic energy value of the intermediate frequency signal with a set periodic energy threshold value; when the period energy value is greater than or equal to the set period energy threshold value and the time when the period energy value is greater than or equal to the set period energy threshold value exceeds a first preset time, the carrier frequency is indicated to have signal input, the received signal is not noise, and the received intermediate frequency signal is output at the moment; when the period energy value is smaller than the set period energy threshold value and the time that the period energy value is smaller than the set period energy threshold value exceeds a second preset time, the carrier frequency is indicated to have no signal input, and if noise is received, the intermediate frequency signal is marked as a noise signal and a noise signal is output; the method realizes the suppression of the bottom noise of the repeater, and samples for multiple times according to the acquisition interval duration corresponding to the digital repeater, can prevent the uncertainty of the sampling point from causing misjudgment, and ensures the reliability of the suppression of the bottom noise;

2. when the collected noise signal is the noise signal, the bottom noise processing module carries out noise reduction processing on the noise signal, determines the noise reduction processing level and the noise reduction processing duration according to the period energy value of the noise signal, and fuses the noise reduction processing level and the noise reduction processing duration to form a noise reduction processing record; the bottom noise analysis module is used for comprehensively evaluating the noise reduction processing records; acquiring a noise reduction record within three days before the current time of the system according to the timestamp; obtaining a bottom noise coefficient GD by combining a correlation algorithm according to the noise reduction processing times and the noise reduction processing duration of different noise processing levels; when GD > presume the threshold value of the noise floor coefficient, early warning in time, facilitate the staff to maintain the digital repeater, raise the working efficiency;

3. when the intermediate-frequency signal is acquired, the gain analysis module analyzes the intermediate-frequency signal, judges whether the intermediate-frequency signal needs to be subjected to gain adjustment or not, and filters the received intermediate-frequency signal to acquire amplitude information of the intermediate-frequency signal; collecting amplitude information of the intermediate frequency signal according to a preset collection interval duration to generate an amplitude information group ZFm; calculating a maximum early warning value and a minimum early warning value of the amplitude according to the received m pieces of amplitude information; acquiring the (m + 1) th amplitude information; and labeled ZFm + 1; comparing ZFm +1 with the amplitude highest warning value Z1 and the amplitude lowest warning value Z2; if ZFm +1 is not less than Z1 or ZFm +1 is not less than Z2, generating a regulating signal; the gain adjusting module receives the adjusting signal and then performs gain adjustment on the intermediate frequency signal, and adjusts the amplitude of the intermediate frequency signal to be between the lowest amplitude early warning value Z2 and the highest amplitude early warning value Z1; the automatic gain adjustment function is realized, and the communication experience of the client is optimized.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a block diagram of the system of the present invention.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

As shown in fig. 1, the digital one-to-four micropower repeater includes a data acquisition module, a data analysis module, a control center, a gain analysis module, a gain adjustment module, a bottom noise processing module, a bottom noise analysis module and a storage module;

the data acquisition module is used for acquiring the periodic energy value of the intermediate frequency signal processed by the uplink covering end or the access end of the digital repeater and transmitting the periodic energy value of the intermediate frequency signal to the data analysis module, the data analysis module is used for receiving the periodic energy value of the intermediate frequency signal and analyzing the periodic energy value of the intermediate frequency signal, when the periodic energy value of the intermediate frequency signal is greater than or equal to a set periodic energy threshold value, the intermediate frequency signal is output, and when the periodic energy value of the intermediate frequency signal is smaller than the set periodic energy threshold value, the intermediate frequency signal is marked as a noise signal and the noise signal is output; the noise signal indicates that the carrier frequency has no signal input and noise is received; the specific analysis steps of the data analysis module are as follows:

the method comprises the following steps: when the digital repeater starts to receive the intermediate frequency signal, the data acquisition module acquires a periodic energy value of the intermediate frequency signal according to the acquisition interval duration corresponding to the digital repeater, wherein the periodic energy value is a value obtained by accumulating the energy of a plurality of continuous bit data and averaging;

step two: comparing the periodic energy value of the intermediate frequency signal with a set periodic energy threshold value;

when the period energy value is greater than or equal to the set period energy threshold value and the time when the period energy value is greater than or equal to the set period energy threshold value exceeds a first preset time, the carrier frequency is indicated to have signal input, the received signal is not noise, and the received intermediate frequency signal is output at the moment;

when the period energy value is smaller than the set period energy threshold value and the time that the period energy value is smaller than the set period energy threshold value exceeds a second preset time, the carrier frequency is indicated to have no signal input, and if noise is received, the intermediate frequency signal is marked as a noise signal and a noise signal is output;

according to the invention, sampling is carried out for multiple times according to the acquisition interval duration corresponding to the digital repeater, so that the false judgment caused by the uncertainty of the sampling point can be prevented, and the reliability of the background noise suppression is ensured;

the data analysis module is used for transmitting the intermediate frequency signal, the noise signal and the periodic energy value to the control center, and the control center is used for transmitting the intermediate frequency signal to the gain analysis module when receiving the intermediate frequency signal;

the control center is used for transmitting the noise signal to the bottom noise processing module when receiving the noise signal, the bottom noise processing module is used for carrying out noise reduction processing on the noise signal, and the specific processing steps are as follows:

s1: when a noise signal is received, the bottom noise processing module starts to operate, and the moment when the noise signal is received is marked as the moment when the noise reduction processing starts;

s2: acquiring a period energy value of a corresponding noise signal, and marking as NE 1;

when NE1 is more than or equal to L1, marking the noise reduction processing level carried out at the moment as advanced noise reduction processing;

when L2 is not more than NE1< L1, marking the noise reduction processing level performed at the moment as middle-level noise reduction processing;

when NE1< L2, the noise reduction processing level performed at this time is marked as primary noise reduction processing; wherein L1 and L2 are both preset values and L1> L2;

s3: continuing to pay attention to the period energy value NE1, when NE1 is greater than or equal to the set period energy threshold, ending the operation of the bottom noise processing module, and marking the time when the operation of the bottom noise processing module is ended as the noise reduction processing end time;

calculating the time difference between the noise reduction processing ending time and the noise reduction processing starting time to obtain the noise reduction processing duration;

the control center is used for stamping a timestamp on the noise reduction processing record and transmitting the noise reduction processing record to the storage module for real-time storage;

the bottom noise analysis module is used for comprehensively evaluating the noise reduction processing records with the time stamps stored in the storage module, and the specific evaluation method comprises the following steps:

SS 1: acquiring a noise reduction record within three days before the current time of the system according to the timestamp;

accumulating the times of advanced noise reduction processing to form advanced frequencies according to the noise reduction processing levels in the noise reduction processing records, marking the advanced frequencies as P1, accumulating the noise reduction processing time length of the advanced noise reduction processing to form advanced total time length, and marking the advanced total time length as PS 1;

obtaining a high-level influence coefficient G1 by using a formula G1 ═ P1 xA 1+ PS1 xA 2, wherein A1 and A2 are preset coefficient factors;

SS 2: accumulating the times of the middle-level noise reduction processing to form middle-level frequency, marking as P2, accumulating the noise reduction processing duration of the middle-level noise reduction processing to form middle-level total duration, and marking as PS 2;

obtaining a middle-level influence coefficient G2 by using a formula G2 ═ P2 xA 3+ PS2 xA 4, wherein A3 and A4 are preset coefficient factors;

SS 3: accumulating the times of the primary noise reduction processing to form a primary frequency, marking the primary frequency as P3, accumulating the noise reduction processing time length of the primary noise reduction processing to form a primary total time length, and marking the primary total time length as PS 3;

obtaining a primary influence coefficient G3 by using a formula G3 ═ P3 xA 5+ PS3 xA 6, wherein A5 and A6 are preset coefficient factors;

SS 4: carrying out normalization processing on the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient and taking the numerical values of the high-level influence coefficient, the medium-level influence coefficient and the primary influence coefficient;

obtaining a base noise coefficient GD by using a formula GD of G1 × B1+ G2 × B2+ G3 × B3, wherein B1, B2, and B3 are all preset coefficient factors, and B1> B2> B3;

SS 5: comparing the background noise coefficient GD with a set background noise coefficient threshold;

when GD > presume the threshold value of the noise floor coefficient, produce the early warning signal;

the bottom noise analysis module is used for transmitting the early warning signal to the control center, the control center is used for receiving the early warning signal and driving the control alarm module to give an alarm when receiving the early warning signal, and meanwhile, the display module is automatically driven to display that the bottom noise problem of the digital repeater is serious and maintenance is recommended;

the method comprises the following steps of:

v1: acquiring the operation year, maintenance record and model of the digital repeater; the maintenance records comprise maintenance times and maintenance time;

v2: the operating life of the digital repeater is marked as N1; marking the maintenance times of the digital repeater as C1;

sequencing the maintenance time of the digital repeater according to time, acquiring the latest maintenance time from the current time of the system, calculating the time difference between the latest maintenance time and the current time of the system to obtain a buffer time length, and marking the buffer time length as HT;

v3: setting all models of the digital repeater to correspond to a preset value; matching the model corresponding to the digital repeater with all models of the digital repeater to obtain a corresponding preset value, and marking the preset value as W1;

v4: normalizing the operation age, the maintenance times, the buffering time and a preset value and taking the numerical values;

acquiring acquisition interval duration TC corresponding to the digital repeater by using a formula TC (mu x) [ (1/N1 × a1+1/C1 × a2+1/HT × a3+ W1 × a4) -1.23569 ]; wherein a1, a2, a3 and a4 are all preset proportionality coefficients, and mu is a correction factor and takes the value of 0.8739;

the gain analysis module is used for receiving the intermediate frequency signal, analyzing the intermediate frequency signal and judging whether gain adjustment needs to be carried out on the intermediate frequency signal, and the specific analysis steps are as follows:

VV 1: filtering the received intermediate frequency signal to obtain intermediate frequency signal amplitude information; collecting amplitude information of the intermediate frequency signal according to a preset collection interval duration to generate an amplitude information group ZFm;

VV 2: calculating a maximum early warning value and a minimum early warning value of the amplitude according to the received m pieces of amplitude information; the method comprises the following specific steps:

VV 21: calculating the average amplitude ZFavg of the m pieces of amplitude information; m is more than or equal to 8;

VV 22: traversing the amplitude information group ZFm, acquiring ZFm maximum value and marking as ZFMax, acquiring ZFm minimum value and marking as ZFMin;

VV 23: calculating a highest amplitude early warning value Z1 by combining the average amplitude ZFavg and the maximum value ZFMax; the specific calculation formula is as follows: z1 ═ ZFmax + (ZFmax-ZFavg) xf, where f is the early warning threshold;

calculating an amplitude minimum early warning value Z2 by combining the average amplitude ZFavg and the minimum value ZFMin; the specific calculation formula is as follows: z2 ═ ZFmin- (ZFavg-ZFmin) × f;

VV 3: acquiring the (m + 1) th amplitude information; and labeled ZFm + 1;

comparing ZFm +1 with the amplitude highest warning value Z1 and the amplitude lowest warning value Z2;

if ZFm +1 is greater than or equal to Z1, generating a regulating signal;

if ZFm +1 is less than or equal to Z2, generating a regulating signal;

if Z2< ZFm +1< Z1, a normal signal is generated;

VV 4: transmitting the adjusting signal to a gain adjusting module, receiving the adjusting signal by the gain adjusting module, then carrying out gain adjustment on the intermediate frequency signal, and adjusting the amplitude of the intermediate frequency signal to be between the minimum amplitude early warning value Z2 and the maximum amplitude early warning value Z1;

VV 5: let m be m +1 and execute step VV21 again;

the gain adjusting module realizes gain adjustment by controlling the programmable gain amplifying circuit.

The working principle of the invention is as follows:

when the digital one-to-four micropower repeater works, firstly, the periodic energy value of an intermediate frequency signal processed by an uplink covering end or an access end of the digital repeater is collected, the periodic energy value of the intermediate frequency signal is analyzed, and the periodic energy value of the intermediate frequency signal is compared with a set periodic energy threshold value; when the period energy value is greater than or equal to the set period energy threshold value and the time when the period energy value is greater than or equal to the set period energy threshold value exceeds a first preset time, the carrier frequency is indicated to have signal input, the received signal is not noise, and the received intermediate frequency signal is output at the moment; when the period energy value is smaller than the set period energy threshold value and the time that the period energy value is smaller than the set period energy threshold value exceeds a second preset time, the carrier frequency is indicated to have no signal input, and if noise is received, the intermediate frequency signal is marked as a noise signal and a noise signal is output; the bottom noise suppression of the repeater is realized;

when the intermediate-frequency signal is acquired, the gain analysis module analyzes the intermediate-frequency signal, judges whether the intermediate-frequency signal needs to be subjected to gain adjustment or not, and filters the received intermediate-frequency signal to acquire amplitude information of the intermediate-frequency signal; collecting amplitude information of the intermediate frequency signal according to a preset collection interval duration to generate an amplitude information group ZFm; calculating a maximum early warning value and a minimum early warning value of the amplitude according to the received m pieces of amplitude information; acquiring the (m + 1) th amplitude information; and labeled ZFm + 1; comparing ZFm +1 with the amplitude highest warning value Z1 and the amplitude lowest warning value Z2; if ZFm +1 is not less than Z1 or ZFm +1 is not less than Z2, generating a regulating signal; the gain adjusting module receives the adjusting signal and then performs gain adjustment on the intermediate frequency signal, and adjusts the amplitude of the intermediate frequency signal to be between the lowest amplitude early warning value Z2 and the highest amplitude early warning value Z1; the automatic gain adjustment function is realized, and the communication experience of a client is optimized;

when the collected noise signal is the noise signal, the bottom noise processing module carries out noise reduction processing on the noise signal, determines the noise reduction processing level and the noise reduction processing duration according to the period energy value of the noise signal, and fuses the noise reduction processing level and the noise reduction processing duration to form a noise reduction processing record; the bottom noise analysis module is used for comprehensively evaluating the noise reduction processing records; acquiring a noise reduction record within three days before the current time of the system according to the timestamp; obtaining a bottom noise coefficient GD by combining a correlation algorithm according to the noise reduction processing times and the noise reduction processing duration of different noise processing levels; when GD > sets for the noise floor coefficient threshold value, in time early warning, make things convenient for the staff to maintain the digital repeater, improve work efficiency.

The above formulas are all obtained by collecting a large amount of data to perform software simulation and performing parameter setting processing by corresponding experts, and the formulas are in accordance with real results.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.