CN100551112C - A kind of method, system and base station of realizing forward signal quality monitoring - Google Patents
A kind of method, system and base station of realizing forward signal quality monitoring Download PDFInfo
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Abstract
The invention provides a kind of method that realizes forward signal quality monitoring, between forward feedback signal receiving terminal and background processing unit, set up the forward signal feedback path in advance, this method comprises the steps: that described forward feedback signal receiving terminal receives forward feedback signal, and described forward feedback signal is sent to the frequency-region signal converter unit; The described forward feedback signal that the frequency-region signal converter unit will receive is transformed to frequency-region signal; Described frequency-region signal is outputed to background processing unit by described forward signal feedback path, the quality of described frequency-region signal is monitored by background processing unit.The present invention also provides a kind of system and base station of realizing forward signal quality monitoring, the technical scheme that the embodiment of the invention provides, the signal that collects is outputed to the analysis that waveform quality and spectrum waveform are carried out in the backstage by the forward signal feedback path, thereby realized automatic monitoring, reduced the cost of use of system the forward signal waveform quality.
Description
Technical field
The present invention relates to wireless communication technology, particularly a kind of method, system and base station of realizing forward signal quality monitoring.
Background technology
The forward signal transmission channel of base station is that the forward emitted signal of base station is handled, and the passage that the signal of handling is exported.This passage mainly is responsible for signal is transmitted reliably.Fig. 1 is the structural representation of the forward signal transmission channel of base station in the prior art.As shown in Figure 1, this passage comprises: channel processing module, frequency-region signal converter unit, power amplifier module, close road module and antenna feeder.
Channel processing module is used for producing and transmits, and outputs to the frequency-region signal converter unit after this signal is exchanged processing.
The frequency-region signal converter unit is used for transmitting of receive channel processing module transmission, and this signal is modulated and filtering, will modulate with filtered signal and output to power amplifier module.
Power amplifier module is used to receive the signal that the frequency-region signal converter unit sends, and this signal is amplified, and the signal after amplifying is outputed to close the road module.
Close the road module, be used to receive the signal of power amplifier module output, output to antenna feeder after this signal synthesize processing.
Antenna feeder is used to receive the signal that closes road module output, and this signal is launched.
By the above as seen, in this forward signal transmission channel, owing to all modules are cascaded, so, all directly have influence on the performance of whole network if any module breaks down or decreased performance.To monitor the quality of forward signal, need be in the forward signal transmission channel acquired signal, and the signal that collects handled and analyzes.
In the prior art, realize monitoring to the forward signal quality, can adopt following first kind of technical scheme: among Fig. 1, channel processing module in the forward signal transmission channel, frequency-region signal converter unit, power amplifier module and close the road module after, A, B, C and four control points of D are set respectively, are used to monitor the quality of signals of each module output.Wherein, at the sector digital power of the signal of A control point monitoring and controlling channels processing module output.Monitor the digital power of the signal of frequency-region signal converter unit output in the B control point.Monitor the power of the signal of power amplifier module output in the C control point.Monitor the standing-wave ratio of the signal of antenna feeder output in the D control point.
Occur in the unusual time at above-mentioned each monitor control index, use this technical scheme can monitor the abnormal conditions of the signal of each module output, but can't monitor the waveform quality of the signal of whole passage output, also can't analyze the covering problem that causes by this waveform quality problem and unusual reason occur.So-called covering problem is meant the problem that the coverage that causes owing to the signal quality variation is dwindled.
In order to solve the problem that exists in above-mentioned first kind of technical scheme, the following second kind of technical scheme of available technology adopting:
Adopt special terminal equipment in local acquired signal such as antenna feeders, these special terminal equipments can be frequency spectrographs etc.And then the waveform quality of the signal that collects with special waveform analyzer analysis, analyze the covering problem that causes by this waveform quality problem and analyze forward signal and unusual reason etc. occurs.
Though above-mentioned second kind of technical scheme can monitor whole passage waveform quality, analyze the unusual reason of the covering problem that causes by the waveform quality problem and analytic signal etc., but the conversion of signal can not be realized in existing base station, therefore can't realize the monitoring of further waveform quality, need the professional to the base station acquired signal, waveform quality to signal is analyzed, thereby can't realize the automatic monitoring of forward signal quality.
This shows, in the prior art, can't monitor automatically, need the professional, the waveform quality of signal is analyzed, thereby increased the cost of use of system to the base station acquired signal to the waveform quality of forward signal.
Summary of the invention
Embodiments of the invention provide a kind of method that realizes forward signal quality monitoring, can reduce the cost of use of system.
Embodiments of the invention provide a kind of system that realizes forward signal quality monitoring, can reduce the cost of use of system.
Embodiments of the invention provide a kind of base station of realizing the forward signal conversion, can carry out automatic reception and conversion to forward signal, reduce the cost of use of system.
In order to reach above-mentioned first purpose, the embodiment of the invention provides a kind of method that realizes forward signal quality monitoring, sets up the forward signal feedback path in advance between forward feedback signal receiving terminal and background processing unit, and this method comprises the steps:
Described forward feedback signal receiving terminal receives forward feedback signal, and described forward feedback signal is sent to the frequency-region signal converter unit;
The described forward feedback signal that the frequency-region signal converter unit will receive is transformed to frequency-region signal; Described frequency-region signal is outputed to background processing unit by described forward signal feedback path, the quality of described frequency-region signal is monitored by background processing unit.
In order to reach above-mentioned second purpose, the embodiment of the invention provides a kind of system that realizes forward signal quality monitoring, this system comprises: forward feedback signal receiving terminal, frequency-region signal converter unit, background processing unit wherein establish the forward signal feedback path between forward feedback signal receiving terminal and background processing unit;
Described forward feedback signal receiving terminal is used to receive forward feedback signal, and by described forward signal feedback path this forward feedback signal is sent to described frequency-region signal converter unit;
Described frequency-region signal converter unit, the described forward feedback signal that is used for receiving is transformed to frequency-region signal;
Background processing unit is used for the quality of described frequency-region signal is monitored.
In order to reach above-mentioned the 3rd purpose, the embodiment of the invention provides a kind of base station of realizing the forward signal conversion, and this base station comprises: forward feedback signal receiving terminal, frequency-region signal converter unit and background processing unit;
Described forward feedback signal receiving terminal is used to receive forward feedback signal, and described forward feedback signal is sent to described frequency-region signal converter unit;
Described frequency-region signal converter unit, the described forward feedback signal that is used for receiving is transformed to frequency-region signal;
Background processing unit is used for receiving described frequency-region signal from described frequency-region signal converter unit, and the quality of described frequency-region signal is monitored.
By the technical scheme of the embodiment of the invention, the forward feedback signal receiving terminal receives forward feedback signal, and the forward feedback signal that receives is sent to described frequency-region signal converter unit by the forward signal feedback path.Described frequency-region signal converter unit, the described forward feedback signal that is used for receiving is transformed to frequency-region signal; Described frequency-region signal is sent to background processing unit by the forward signal feedback path; Described background processing unit is used for receiving described frequency-region signal by the forward signal feedback path, analyzes the waveform quality and the spectrum waveform of described frequency-region signal.
From technique scheme as can be seen, the forward feedback signal receiving terminal can the automatic reception forward feedback signal, the frequency-region signal converter unit carries out frequency-conversion processing to this forward feedback signal, and the frequency-region signal that frequency-conversion processing and signal transformation obtain sent to background processing unit by the forward signal feedback path, analyze the waveform quality and the spectrum waveform of described frequency-region signal by background processing unit.Realized the automatic collection of signal, and the signal that collects is outputed to the backstage by the forward signal feedback path carry out the analysis of waveform quality and the analysis of spectrum waveform, thereby realized automatic monitoring, reduced the cost of use of system the forward signal waveform quality.
Description of drawings
Fig. 1 is the structural representation of the forward signal transmission channel of base station in the prior art;
Fig. 2 is the structural representation of system of the realization forward signal quality monitoring of the embodiment of the invention;
Fig. 3 is the structural representation of the frequency-region signal converter unit among Fig. 2;
Fig. 4 is the structural representation of the base station of the realization forward signal conversion of the embodiment of the invention and quality monitoring;
Fig. 5 is the schematic flow sheet of method of the realization forward signal quality monitoring of the embodiment of the invention;
Fig. 6 is the schematic diagram of normal waveform of the forward signal of the embodiment of the invention;
Fig. 7 is the schematic diagram of unusual waveforms of the forward signal of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The embodiment of the invention provides a kind of method, system and base station of realizing forward signal quality monitoring.This method comprises: set up the forward signal feedback path in advance between forward feedback signal receiving terminal and background processing unit, this method comprises the steps: that described forward feedback signal receiving terminal receives forward feedback signal, and described forward feedback signal is sent to the frequency-region signal converter unit; The described forward feedback signal that the frequency-region signal converter unit will receive is transformed to frequency-region signal; Described frequency-region signal is outputed to background processing unit by described forward signal feedback path, the quality of described frequency-region signal is monitored by background processing unit.It is pointed out that forward feedback signal related in the embodiment of the invention is a forward signal.
Fig. 2 is the structural representation of system of the realization forward signal quality monitoring of the embodiment of the invention.As shown in Figure 2, this system comprises: forward feedback signal receiving terminal, frequency-region signal converter unit and background processing unit.Establish the forward signal feedback path between forward feedback signal receiving terminal and frequency-region signal converter unit and background processing unit, in the present embodiment, the forward feedback signal receiving terminal can be antenna-feedback system.
Wherein, antenna-feedback system is used to receive forward feedback signal, by the forward signal feedback path this forward feedback signal is sent to the frequency-region signal converter unit.
The frequency-region signal converter unit is used for receiving forward feedback signal by the forward signal feedback path, and this forward feedback signal is transformed to frequency-region signal, and this frequency-region signal is sent to background processing unit by the forward signal feedback path.
Background processing unit is used for receiving frequency-region signal by the forward signal feedback path, and the quality of this frequency-region signal is monitored.This background processing unit can be the PC that waveform analysis software is installed.
In the present embodiment, antenna-feedback system, frequency-region signal converter unit, background processing unit, and the cable that connects these modules has constituted the feedback path of forward signal.Wherein, antenna-feedback system is made up of antenna, power amplifier module and forward signal coupling module etc.
In actual applications, the frequency-region signal converter unit can be separate equipment, also can be integrated in base station or the antenna-feedback system.
Receive forward feedback signal by antenna feeder, this forward feedback signal is carried out frequency-conversion processing, the signal after handling is outputed to background processing unit carry out waveform quality analysis and spectrum analysis.This shows, can gather forward signal automatically, need not personnel arrive the base station acquired signal, can save manpower.Can also realize the remote collection and the transmission of signal, this signals collecting is not subjected to the restriction of weather and geographical conditions.In addition, can give background processing unit by the feedback path remote transmission of forward signal with the frequency-region signal that collects, background processing unit is carried out quality monitoring to this frequency-region signal, therefore can reduce the cost of use of system greatly.Background processing unit generally is the personal computer (PC) that waveform analysis software is installed, and does not additionally need other special signals collecting instrument and wave analysers, therefore can save the input of material resources greatly.
Fig. 3 is the structural representation of the frequency-region signal converter unit among Fig. 2.As shown in Figure 3, this frequency-region signal converter unit comprises: frequency conversion processing unit, Digital IF Processing unit, this frequency-region signal converter unit can further include sampling unit.
Wherein, frequency conversion processing unit is used for receiving forward feedback signal by the forward signal feedback path, and this forward feedback signal is carried out down-converted, generates intermediate-freuqncy signal, and this intermediate-freuqncy signal is sent to the Digital IF Processing unit.
The Digital IF Processing unit is used to receive the intermediate-freuqncy signal that frequency conversion processing unit sends, and this intermediate-freuqncy signal is carried out Fourier transform, generates frequency-region signal, and this frequency-region signal is sent to sampling unit.
In order to analyze the waveform of frequency-region signal, need sample to frequency-region signal, therefore this frequency-region signal converter unit can further include: sampling unit, be used for receiving the frequency-region signal that the Digital IF Processing unit sends by described forward signal feedback path, this frequency-region signal is carried out sampling processing, will send to background processing unit through the frequency-region signal of sampling processing.
Corresponding to the background processing unit among Fig. 2, background processing unit receives the frequency-region signal through sampling processing in the present embodiment, analyzes the waveform quality and the spectrum waveform of this frequency-region signal, perhaps one in the two is analyzed.
Fig. 4 is the structural representation of the base station of the realization forward signal conversion of the embodiment of the invention and quality monitoring.As shown in Figure 4, this base station comprises: forward feedback signal receiving terminal and frequency-region signal converter unit also further comprise: sampling unit and background processing unit, in the present embodiment, the forward feedback signal receiving terminal can be antenna-feedback system.
Wherein, the forward feedback signal receiving terminal receives forward feedback signal, and the forward feedback signal that receives is sent to the frequency-region signal converter unit.
The frequency-region signal converter unit receives this forward feedback signal, and this forward feedback signal is transformed into frequency-region signal.
Sampling unit receives frequency-region signal from the frequency-region signal converter unit, and frequency-region signal is carried out sampling processing, will send to background processing unit through the frequency-region signal of sampling processing.
Background processing unit receives the frequency-region signal through sampling processing, analyzes the waveform quality and the spectrum waveform of this frequency-region signal, perhaps analyzes among both.It is pointed out that in this base station not comprise sampling unit, background processing unit directly receives frequency-region signal from the frequency-region signal converter unit so, analyzes the waveform quality and the frequency spectrum parameter of this frequency-region signal, perhaps analyzes among both.
The conversion of forward feedback signal can not be realized in base station of the prior art, can't realize the automatic monitoring of forward feedback signal quality simultaneously.By the technical scheme of present embodiment, can in the base station, realize the conversion of forward feedback signal, if include background processing unit in the base station, can also realize the automatic monitoring of forward feedback signal quality, need not artificial intervention.It is to be noted simultaneously; can comprise background processing unit in this base station; if base station scale or disposal ability are too little; also can not comprise background processing unit; this background processing unit can be put into long-range Control Room, connect frequency-region signal converter unit and background processing module, or connect sampling unit and background processing module by cable; send signal to the background processing unit in the remote monitoring chamber, quality of signals is monitored by this background processing unit.
In Fig. 2, Fig. 3 and embodiment shown in Figure 4, introduced and realized the system of forward signal quality monitoring and the 26S Proteasome Structure and Function of base station, introduced the method that realizes forward signal quality monitoring below.
Fig. 5 is the schematic flow sheet of method of the realization forward signal quality monitoring of the embodiment of the invention.As shown in Figure 5, this method comprises:
Step 501: between forward feedback signal receiving terminal and backstage, set up the forward signal feedback path.
In this step, the method of setting up the forward signal feedback path between forward feedback signal receiving terminal and backstage comprises: connect forward feedback signal receiving terminal, frequency-region signal converter unit and background processing unit with cable, form the forward feedback signal circulation passage.Here the forward feedback signal receiving terminal of indication can be an antenna-feedback system.
Step 502: the forward feedback signal receiving terminal receives forward feedback signal, and described forward feedback signal is sent to the frequency-region signal converter unit.
Here said forward feedback signal can be the radiofrequency signal that receives from antenna feeder.It is to be noted that in fact this forward feedback signal is exactly forward signal, for the forward signal of launching with antenna feeder is distinguished, so claim that in embodiments of the present invention this forward signal is a forward feedback signal.
Step 503: the frequency-region signal converter unit is transformed to frequency-region signal with the forward feedback signal that receives.
In this step, the method for the forward feedback signal that receives being carried out frequency-conversion processing comprises: this radiofrequency signal is carried out down-converted, generate intermediate-freuqncy signal, then this intermediate-freuqncy signal is carried out Fourier transform, generate frequency-region signal.
The method of radiofrequency signal being carried out down-converted is: extract the midband of radiofrequency signal, this radiofrequency signal is reverted to intermediate-freuqncy signal, the down-converted method of in this processing method and the prior art intermediate-freuqncy signal being carried out is identical.The method of intermediate-freuqncy signal being carried out Fourier transform is: the intermediate-freuqncy signal of time domain is carried out Fourier transform generate frequency-region signal.So-called frequency-region signal is for time-domain signal, because the signal before carrying out Fourier transform is a time-domain signal, converts frequency-region signal to through Fourier transform.Here the down-converted method of being mentioned and the method for Fourier transform all belong to the technology of well known to a person skilled in the art, for simplicity, just do not do here and repeat to introduce.
Step 504: the frequency-region signal through frequency-conversion processing is carried out sampling processing.
In this step, according to the actual storage condition of interior Qwest law, system, and bandwidth condition decision sample frequency, according to this sample frequency forward feedback signal is carried out sampling processing.This sampling processing method also is the technology of well known to a person skilled in the art that belongs to, and does not just do introduction here.
Step 505: will output to background processing unit by the forward signal feedback path through the frequency-region signal of sampling processing, this frequency-region signal is carried out quality monitoring.
In this step, the spectrum waveform of the frequency-region signal that mainly to be qualitatively analyze obtain through step 504 sampling processing and analyze the quality of this frequency-region signal is perhaps analyzed among both, promptly calculates the ρ value of this frequency-region signal.
Be example with normal and unusual figure below, introduce how to judge qualitatively waveform normally whether.
Fig. 6 is the schematic diagram of the normal waveform of forward signal of the embodiment of the invention.
This waveform is milder as can be seen, and near ideal waveform, square wave just can qualitative analysis goes out this waveform and belongs to normal waveform.
Fig. 7 is the schematic diagram of the forward signal unusual waveforms of the embodiment of the invention.
As can be seen, this waveform attenuating is bigger from this figure, finds out that obviously this waveform and desirable square wave waveform differ far away, therefore can judge that this waveform belongs to unusual waveforms.
According to analysis to spectrum waveform, can judge qualitatively waveform normally whether.Can further calculate the ρ value of this frequency-region signal, judge quantitatively according to the ρ value that calculates whether the waveform of this frequency-region signal is normal.ρ=signal power/gross power, 0＜ρ＜1, wherein, gross power is signal power and noise power sum.The ρ value approaches 1 more, and the expression waveform quality is good more.Wherein, gross power and noise power are to describe the amount of frequency-region signal, and the method for obtaining this tittle also is the technology that well known to a person skilled in the art, just do not introduce how to obtain gross power and noise power according to the frequency-region signal that collects for example here.
In the present embodiment, execution in step 501～step 503 can realize the collection of forward feedback signal.
System, method and the base station of the realization forward signal quality monitoring that the embodiment of the invention provided can be applied to code division multiple access (CDMA) system, direct sequence CDMA (DS-CDMA), Wideband Code Division Multiple Access (WCDMA) (WCDMA), TD SDMA (TD-SCDMA), and perhaps other has the wireless communication system of same principle.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind of method that realizes forward signal quality monitoring is characterized in that, sets up the forward signal feedback path in advance between forward feedback signal receiving terminal and background processing unit, and this method comprises the steps:
Described forward feedback signal receiving terminal receives forward feedback signal, and described forward feedback signal is sent to the frequency-region signal converter unit;
The described forward feedback signal that the frequency-region signal converter unit will receive is transformed to frequency-region signal;
Described frequency-region signal is outputed to background processing unit by described forward signal feedback path, the quality of described frequency-region signal is monitored by background processing unit.
2, method according to claim 1 is characterized in that, described forward feedback signal receiving terminal is an antenna-feedback system;
The described forward signal feedback path of setting up between forward feedback signal receiving terminal and background processing unit comprises:
Connect antenna-feedback system and frequency-region signal converter unit and background processing unit with cable, form the forward signal feedback path.
3, method according to claim 1 is characterized in that, the frequency-region signal converter unit comprises the method that forward feedback signal is transformed to frequency-region signal:
The frequency-region signal converter unit carries out down-converted to described forward feedback signal, generates intermediate-freuqncy signal, and described intermediate-freuqncy signal is carried out Fourier transform, generates frequency-region signal.
4, method according to claim 1 is characterized in that, described frequency-region signal is outputed to before the background processing unit by described forward signal feedback path, and this method further comprises: described frequency-region signal is carried out sampling processing;
Describedly described frequency-region signal outputed to background processing unit be:
Described frequency-region signal through sampling processing is outputed to background processing unit by the forward signal feedback path.
5, method according to claim 4 is characterized in that, the method for described frequency-region signal being carried out quality monitoring comprises:
Analyze the waveform quality and/or the spectrum waveform of described frequency-region signal through sampling processing.
According to each described method of claim 1 to 5, it is characterized in that 6, described forward feedback signal is a radiofrequency signal.
7, a kind of system that realizes forward signal quality monitoring, it is characterized in that, this system comprises: forward feedback signal receiving terminal, frequency-region signal converter unit, background processing unit wherein establish the forward signal feedback path between forward feedback signal receiving terminal and background processing unit;
Described forward feedback signal receiving terminal is used to receive forward feedback signal, and by described forward signal feedback path this forward feedback signal is sent to described frequency-region signal converter unit;
Described frequency-region signal converter unit, the described forward feedback signal that is used for receiving is transformed to frequency-region signal;
Background processing unit is used for the quality of described frequency-region signal is monitored.
8, system according to claim 7 is characterized in that, described frequency-region signal converter unit comprises: frequency conversion processing unit and Digital IF Processing unit;
Described frequency conversion processing unit is used for described forward feedback signal is carried out down-converted, generates intermediate-freuqncy signal, and described intermediate-freuqncy signal is sent to described Digital IF Processing unit;
Described Digital IF Processing unit is used to receive described intermediate-freuqncy signal, and described intermediate-freuqncy signal is carried out Fourier transform, generates frequency-region signal.
9, system according to claim 8 is characterized in that, described frequency-region signal converter unit further comprises sampling unit;
Described sampling unit is used for receiving described frequency-region signal by described forward signal feedback path, and described frequency-region signal is carried out sampling processing, and described frequency-region signal through sampling processing is sent to described background processing unit by described forward signal feedback path;
Described background processing unit is further used for receiving described frequency-region signal through sampling processing by described forward signal feedback path, analyzes the waveform quality and/or the spectrum waveform of described frequency-region signal.
According to claim 7,8 or 9 described systems, it is characterized in that 10, described background processing unit is the personal computer PC that waveform analysis software is installed.
11, a kind of base station of realizing the forward signal conversion is characterized in that, this base station comprises: forward feedback signal receiving terminal, frequency-region signal converter unit and background processing unit;
Described forward feedback signal receiving terminal is used to receive forward feedback signal, and described forward feedback signal is sent to described frequency-region signal converter unit;
Described frequency-region signal converter unit, the described forward feedback signal that is used for receiving is transformed to frequency-region signal;
Described background processing unit is used for receiving described frequency-region signal from described frequency-region signal converter unit, and the quality of described frequency-region signal is monitored.
12, base station according to claim 11 is characterized in that, this base station further comprises: sampling unit;
Described sampling unit is used for receiving described frequency-region signal from described frequency-region signal converter unit, and described frequency-region signal is carried out sampling processing, and described frequency-region signal through sampling processing is sent to described background processing unit;
Described background processing unit is further used for receiving described frequency-region signal through sampling processing, analyzes the waveform quality and/or the spectrum waveform of described frequency-region signal.
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