CN101296471B - Interference detection device and interference detection method - Google Patents
Interference detection device and interference detection method Download PDFInfo
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- CN101296471B CN101296471B CN2008101291776A CN200810129177A CN101296471B CN 101296471 B CN101296471 B CN 101296471B CN 2008101291776 A CN2008101291776 A CN 2008101291776A CN 200810129177 A CN200810129177 A CN 200810129177A CN 101296471 B CN101296471 B CN 101296471B
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Abstract
The embodiment of the invention discloses an interference detecting device and a method thereof; particularly, the interference detecting device comprises a signal demodulation unit, a base station acquisition unit, an isolation acquisition unit and an alarm processing unit. By using the interference detecting device and the method thereof in the embodiment of the invention, the type of the interference source can be judged correctly and the interference alarm can be correctly given.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of interference detecting apparatus and interference detection method.
Background technology
Along with closing on day by day of 3G step, how better and follow-up each big operator all be faced with the 3G system problem of compatibility mutually when own present network is strengthened the optimization dynamics.Each manufacturer all in the tool operability of, engineering minimum from cost price, to PHS (Person Handle System; Personal handyphone system) network, GSM network (Global System for Mobile Communication; Global system for mobile communications), CDMA (Code Division Multiple Access; Code division multiple access inserts) existing network such as network influence angle with smallest and sets out, seek to solve 3G network build in the existing network of existence to the solution of 3G interference problem.
Detecting the means of disturbing at present mainly is through terminal and spectrum analysis equipment, and whether the judgement interference that the terminal can only be rough exists, and Interference Detection must be carried out through spectrum analysis equipment accurately.Traditional interference positioning method is through the frequency spectrograph frequency sweep, and characteristics such as observation signal frequency, amplitude and bandwidth are carried out discriminatory analysis.
The inventor finds that there is following shortcoming at least in prior art in realizing process of the present invention:
Therefore the frequency spectrograph main purpose is in the ultratvide frequency band scope, all to carry out accurate signal analysis, causes costing an arm and a leg, volume is big, quality is heavy.If adopt the portable frequency spectrum appearance of low side; Its principle be through reduce measuring accuracy reach reduce cost, the purpose of volume and weight; But precision index is even more important in interference monitoring, otherwise can't accurately judge annoyance level, is unfavorable for confirming alarming threshold.
Summary of the invention
Embodiments of the invention provide a kind of interference detecting apparatus and interference detection method, and the signal of receiving that is used to achieve a butt joint is reasonably judged, so that interference source is judged.
Embodiments of the invention provide a kind of interference detecting apparatus, comprising: signal demodulation unit, base station acquiring unit, isolation acquiring unit and interference judging unit:
Said signal demodulation unit; Be used for the signal to be detected that receives is carried out demodulation; Demodulation is obtained the pilot signal amplitude of said interference detecting apparatus present position and is sent to said isolation acquiring unit, and demodulation is obtained base station pilot information and sent to said base station acquiring unit;
Said base station acquiring unit is used for the base station pilot information according to said signal demodulation unit transmission, obtains the corresponding signal power of each signal source sign and each signal source sign and sends to said isolation acquiring unit;
Said isolation acquiring unit; Be used for pilot signal amplitude according to the said interference detecting apparatus present position of said signal demodulation unit transmission; And each signal source sign of said base station acquiring unit transmission and the corresponding signal power of each signal source sign, obtain isolation and send to said interference judging unit;
Said interference judging unit is used for the isolation according to said isolation acquiring unit transmission, and predefined isolation thresholding, judges annoyance level.
Embodiments of the invention also provide a kind of interference detection method, comprising:
Interference detecting apparatus carries out demodulation and obtains the pilot signal amplitude and base station pilot information the signal to be detected that receives;
Said interference detecting apparatus obtains each signal source sign and the corresponding signal power of each signal source sign according to said base station pilot information;
Said interference detecting apparatus obtains isolation according to said pilot signal amplitude, said each signal source sign and the corresponding signal power of each signal source sign;
Said interference detecting apparatus is judged annoyance level according to said isolation and predefined isolation thresholding.
Compared with prior art, embodiments of the invention have the following advantages:
In the interference detecting apparatus and method of embodiments of the invention; Through pilot signal amplitude and the base station pilot information of obtaining signal to be detected; Can obtain isolation and compare with the isolation thresholding that obtains in advance; Thereby judge interference source type accurately, disturb alarm and output isolation accurately.
Description of drawings
Fig. 1 is the structural representation of a kind of interference detecting apparatus in the embodiment of the invention;
Fig. 2 is the structural representation of another kind of interference detecting apparatus in the embodiment of the invention;
Fig. 3 is the flow chart of a kind of interference detection method in the embodiment of the invention.
Embodiment
Embodiments of the invention provide a kind of interference detecting apparatus, and are as shown in Figure 1, comprising: signal demodulation unit 1, base station acquiring unit 2, isolation acquiring unit 3 and interference judging unit 4.
Signal demodulation unit 1; Be used for the signal to be detected that receives is carried out demodulation; And judge whether to exist signal; If exist then demodulation is obtained the pilot signal amplitude of interference detecting apparatus present position and sent to isolation acquiring unit 3, demodulation is obtained base station pilot information and is sent to base station acquiring unit 2.
Base station acquiring unit 2 is used for the base station pilot information according to signal demodulation unit 1 transmission, obtains the corresponding signal power of each signal source sign and each signal source sign and sends to isolation acquiring unit 3.
Disturb judging unit 4, be used for isolation according to 3 transmissions of isolation acquiring unit, and predefined isolation thresholding, judge annoyance level.
Concrete, the interference monitoring device that provides among this embodiment, promptly can independent test also can be integrated in the base station equipment.Through internal arithmetic and setting thresholding, make it possess the function that shows interference signal isolation, demonstration base station IDs and large-signal input alarm.In the site survey stage of the network planning, can directly judge website annoyance level and availability through this interference monitoring device.After web construction was accomplished, the interference monitoring device added and hangs over base station side, and the interference source that the later network optimization increases is monitored.
In the another embodiment of the present invention, be example, the structure of interference monitoring device further is described with the detection that PHS is disturbed.As shown in Figure 2; This interference monitoring device further comprises during as testing equipment independently: antenna 10, bandpass filtering unit 20, rf receiver unit 30, signal demodulation unit 40, alarming processing unit 50, base station acquiring unit 60, isolation computing unit 70, disturb judging unit 80 and display unit 90.Concrete, the detailed principle of each several part and function realize as follows in this interference monitoring device:
Base station acquiring unit 60; Be used for PHS base station pilot information according to signal demodulation unit 40 transmissions; Extract the data in the fixed code string, calculate the corresponding signal power of each signal source ID of PHS (being the PHS base station IDs) and each signal source ID, send to isolation acquiring unit 70.
Disturb judging unit 80, be used to judge whether the isolation of isolation acquiring unit 70 transmissions meets the thresholding of setting, to judge annoyance level.。
In addition, when this interference monitoring device is connected test with the base station, can connects this interference monitoring device through the also cabinet interface of base station and test, should ask the 26S Proteasome Structure and Function of the interference monitoring device under the condition as above shown in Figure 2, not be repeated in this description at this.Generally a little disturb when location building a station, can adopt this kind structure.
The embodiment of the application of the invention; Through pilot signal amplitude and the base station pilot information of obtaining signal to be detected; Can obtain isolation and compare, thereby judge interference source type accurately, disturb alarm and output isolation accurately with the isolation thresholding that obtains in advance.Existing frequency spectrograph does not possess this function, must be through drawing general isolation data after a large amount of test, analysis and the calculating.In addition, this interference monitoring device can be loaded into the base station, also can be portable, and littler and its cost is lower on the volume than frequency spectrograph.
Embodiments of the invention also provide a kind of interference detection method, and are as shown in Figure 3, comprising:
Step s101, the signal to be detected that receives is carried out demodulation and obtains the pilot signal amplitude and base station pilot information.
Step s102, according to said base station pilot information, obtain each signal source sign and the corresponding signal power of each signal source sign.
Step s103, according to said pilot signal amplitude, each signal source sign and the corresponding signal power of each signal source sign, obtain isolation.
Step s104, according to said isolation and predefined isolation thresholding, judge annoyance level.
Concrete, before the above-mentioned steps s101, also comprise: receive pilot signal and said pilot signal is carried out filtering; To said filtered signal amplify, down-conversion and sampling processing.
Concrete, judge among the step s104 when annoyance level is an isolation less than predefined isolation thresholding, also comprise: produce warning information,
In addition, above-mentioned steps can also comprise: the signal source sign and the isolation that get access to are shown.
Need to prove; Be example with detection that PHS is disturbed in the foregoing description; The structure of interference monitoring device is described, and the function of interference monitoring device is not limited to the detection to the PHS interference in the embodiment of the invention, also can be applicable to the interference of networks such as GSM or CDMA is detected.When different interference is detected, need be according to the working frequency points of the interference that detected adjustment interference monitoring device, and the demodulation mode that signal demodulation unit carries out the signal demodulation to the received signal carried out respective change.The working method of each several part is similar with above-mentioned detection to the PHS interference in the interference monitoring device, is not repeated in this description at this.
The interference monitoring device that provides in the embodiments of the invention possesses the function of three aspects: frequency sweep, signal analysis, alarm function.Concrete, the frequency sweep function class of interference monitoring device can be tested the signal distributions situation in certain frequency band like frequency spectrograph, can be from the characteristic and the size of initial analysis interference signal on amplitude and the bandwidth.The signal analysis function of interference monitoring device can be judged the ability of signal, obtains signal power and analyzes ID number of base station, helps to judge interference source and judges whether alarm.In the alarm function of interference monitoring device, can be according to predefined isolation thresholding, when the interference source that monitors when the isolation of base station reaches this thresholding, alarm at once.Thereby show the overproof amplitude of interference signal, conveniently to take further measures.
The embodiment of the application of the invention; Through pilot signal amplitude and the base station pilot information of obtaining signal to be detected; Can obtain isolation and compare, thereby judge interference source type accurately, disturb alarm and output isolation accurately with the isolation thresholding that obtains in advance.Existing frequency spectrograph does not possess this function, must be through drawing general isolation data after a large amount of test, analysis and the calculating.In addition, this interference monitoring device can be loaded into the base station, also can be portable, and littler and its cost is lower on the volume than frequency spectrograph.
Description through above execution mode; Those skilled in the art can be well understood to the present invention and can realize through hardware, also can realize that based on such understanding technical scheme of the present invention can be come out with the embodied of software product by the mode that software adds necessary general hardware platform; It (can be CD-ROM that this software product can be stored in a non-volatile memory medium; USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be a personal computer; Server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (9)
1. an interference detecting apparatus is characterized in that, comprising: signal demodulation unit, base station acquiring unit, isolation acquiring unit and interference judging unit:
Said signal demodulation unit; Be used for the signal to be detected that receives is carried out demodulation; Demodulation is obtained the pilot signal amplitude of said interference detecting apparatus present position and is sent to said isolation acquiring unit, and demodulation is obtained base station pilot information and sent to said base station acquiring unit;
Said base station acquiring unit is used for the base station pilot information according to said signal demodulation unit transmission, obtains the corresponding signal power of each signal source sign and each signal source sign and sends to said isolation acquiring unit;
Said isolation acquiring unit; Be used for the pilot signal amplitude according to the said interference detecting apparatus present position of said signal demodulation unit transmission, each signal source sign and the corresponding signal power of each signal source sign that said base station acquiring unit sends, obtain isolation and send to said interference judging unit;
Said interference judging unit is used for the isolation according to said isolation acquiring unit transmission, and predefined isolation thresholding, judges annoyance level.
2. interference detecting apparatus according to claim 1 is characterized in that, also comprises: receiving element, bandpass filtering unit and rf receiver unit,
Said receiving element is used to receive pilot signal and sends to said bandpass filtering unit;
Said bandpass filtering unit is used for the pilot signal that said receiving element sends is carried out sending to said rf receiver unit after the filtering;
Said rf receiver unit is used for the filtered signal that said bandpass filtering unit sends is amplified, sends to said signal demodulation unit as said signal to be detected after down-conversion and the sampling processing.
3. interference detecting apparatus according to claim 1 is characterized in that, also comprises:
Alarming processing unit, the isolation that is used for sending when said interference judgment unit judges isolation acquiring unit produce alarm during less than predefined isolation thresholding;
4. interference detecting apparatus according to claim 1 is characterized in that, also comprises:
Display unit, the isolation that signal source identifies and said isolation acquiring unit obtains that is used for said base station acquiring unit is obtained shows.
5. like each said interference detecting apparatus in the claim 1 to 4, it is characterized in that said interference detecting apparatus is independent equipment or is integrated in the base station equipment.
6. an interference detection method is characterized in that, comprising:
Interference detecting apparatus carries out demodulation and obtains the pilot signal amplitude and base station pilot information the signal to be detected that receives;
Said interference detecting apparatus obtains each signal source sign and the corresponding signal power of each signal source sign according to said base station pilot information;
Said interference detecting apparatus obtains isolation according to said pilot signal amplitude, said each signal source sign and the corresponding signal power of each signal source sign;
Said interference detecting apparatus is judged annoyance level according to said isolation and predefined isolation thresholding.
7. like the said interference detection method of claim 6, it is characterized in that, said to the signal to be detected that receives carry out demodulation and obtain the pilot signal amplitude and base station pilot information before, also comprise:
Receive pilot signal and said pilot signal is carried out filtering;
To said filtered signal amplify, down-conversion and sampling processing.
8. like the said interference detection method of claim 6, it is characterized in that, when said annoyance level is specially isolation less than predefined isolation thresholding, also comprise:
Produce warning information.
9. like the said interference detection method of claim 6, it is characterized in that, also comprise:
Signal source sign that gets access to and the isolation that obtains are shown.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102186202A (en) * | 2011-01-04 | 2011-09-14 | 京信通信系统（中国）有限公司 | An interference source positioning system and method |
| CN103517299B (en) * | 2012-06-18 | 2018-11-20 | 罗森伯格（上海）通信技术有限公司 | A kind of base-station intermodulation signal detection method and system |
| CN103888951B (en) * | 2012-12-21 | 2017-06-23 | 电信科学技术研究院 | A kind of interference processing method and system in cognitive radio system |
| CN105376751B (en) * | 2014-09-02 | 2019-06-11 | 中兴通讯股份有限公司 | A kind of detection, analysis, alarm method and device |
| US20160226603A1 (en) * | 2015-01-30 | 2016-08-04 | Alex Stephenne | Method and system for validating interfering signals |
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| WO2005088999A1 (en) * | 2004-02-13 | 2005-09-22 | Thales | Method of optimising planning in a cdma-type communications system |
| CN1777074A (en) * | 2005-11-28 | 2006-05-24 | 浙江三维通信股份有限公司 | Method for monitoring wireless high-frequency-amplification station isolation degree using pilot frequency multi-channel signal |
| CN101047486A (en) * | 2006-06-23 | 2007-10-03 | 华为技术有限公司 | Interference detection method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2005088999A1 (en) * | 2004-02-13 | 2005-09-22 | Thales | Method of optimising planning in a cdma-type communications system |
| CN1777074A (en) * | 2005-11-28 | 2006-05-24 | 浙江三维通信股份有限公司 | Method for monitoring wireless high-frequency-amplification station isolation degree using pilot frequency multi-channel signal |
| CN101047486A (en) * | 2006-06-23 | 2007-10-03 | 华为技术有限公司 | Interference detection method |
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