CN103220051A - Mobile communication network interference comprehensive tester - Google Patents
Mobile communication network interference comprehensive tester Download PDFInfo
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- CN103220051A CN103220051A CN2013101098801A CN201310109880A CN103220051A CN 103220051 A CN103220051 A CN 103220051A CN 2013101098801 A CN2013101098801 A CN 2013101098801A CN 201310109880 A CN201310109880 A CN 201310109880A CN 103220051 A CN103220051 A CN 103220051A
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- duplexer
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Abstract
The invention discloses a mobile communication network interference comprehensive tester, which comprises a first duplexer, a second duplexer and an electric bridge, wherein the first duplexer is connected with an antenna feed system through an ANT (antenna) side interface, the second duplexer is connected with a base station through a BTS (base transceiver station) side interface, and the electric bridge is connected between the first duplexer and the second duplexer and comprises a base station testing port and an antenna feed testing port. After the mobile communication network interference comprehensive tester is adopted, the problem of the checking of various kinds of interferences in the work can be fast and effectively solved, the technical difficulty is reduced, and the work efficiency is improved.
Description
Technical field
The present invention relates to mobile communications network wireless uplink disturbed test technology, particularly relate to mobile communications network and disturb comprehensive tester.
Background technology
Cordless communication network is increasingly sophisticated, disturbs the relevant work of investigation also day by day to increase in the radio communication optimization work.At present, disturb the higher engineer's follow-up of investigation need of work technical merit, still, the engineer that level is high more only relies on frequency spectrograph and intermodulation instrument in disturbing investigation, even can judge interference type, also is difficult to accurately judge interference source.Therefore, can't effectively solve various interference problems fast, hinder finishing of these work greatly.
Summary of the invention
Based on this, be necessary at the problems referred to above, provide a kind of mobile communications network to disturb comprehensive tester, can remove all kinds of obstacles, increase work efficiency.
A kind of mobile communications network disturbs comprehensive tester, comprising:
First duplexer, this duplexer links to each other with antenna-feedback system by the ANT side interface;
Second duplexer, this duplexer links to each other with the base station by the BTS side interface;
Be connected the electric bridge between described first duplexer and described second duplexer, this electric bridge comprises base station testing port and antenna feeder test port.
Implement the present invention, can investigate the Intermodulation Interference of antenna-feedback system and the interference that base station itself produces fast, save operation, increase work efficiency, satisfy present field engineer's active demand.
In the middle of embodiment, also comprise therein:
The 3rd duplexer, an end of this duplexer links to each other with described antenna-feedback system, and its other end comprises the RX interface;
The power splitter that links to each other with the RX interface of described the 3rd duplexer;
The up frequency-selector of multifrequency point that links to each other with described power splitter, the up frequency-selector of this multifrequency point comprise with the adjacent port of disturbed test frequently.
Implement present embodiment, can also investigate fast with adjacent and disturb frequently.
In the middle of embodiment, also comprise: high-power power amplifier and multifrequency point signal generator therein; Wherein,
Described high-power power amplifier is connected between the TX interface of described multifrequency point signal generator and described the 3rd duplexer;
Described power splitter comprises the Intermodulation Interference test port.
Implement present embodiment, can also investigate active equipment reflection Intermodulation Interference and intermodulation group effect signal fast and disturb.。
In the middle of embodiment, comprising therein:
Frequency spectrograph, this frequency spectrograph can link to each other with one of described Intermodulation Interference test port with described base station testing port, described antenna feeder test port, the described adjacent together port of disturbed test frequently.
Implement present embodiment, can also gather interference spectrum figure, help to detect broadband clutter interference problem.
Description of drawings
Fig. 1 is the principle schematic that present base station interference is got rid of;
Fig. 2 is the principle schematic of the two-way disturbed test assembly of the present invention;
Fig. 3 is the principle schematic of intermodulation of the present invention/adjacent together assembly of disturbed test frequently.
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.
Fig. 1 is the principle schematic that present base station interference is got rid of.
The investigation of disturbing generally need be with multiple instrument and related device at present, need carry frequency spectrograph, the intermodulation instrument, frequency selecting repeater, various devices be connected feeder line, need at the scene to build different corresponding test scenes according to different characteristics of interference, not only find these instruments and accessory difficulty big, and the complex procedures during on-the-spot searching, require also very high to engineers and technicians, illustrate base station interference investigation case, as shown in Figure 1 just for searching the method for base station interference at present, need earlier the base station to be connected with coupler, the coupled end of coupler connects duplexer, the TX interface of duplexer connects load, the RX interface connects frequency spectrograph, and the straight-through end of coupler connects antenna-feedback system.In this case, need to use 3 passive devices, be respectively a coupler, a duplexer and a load, connecting line need use 5, also has the plurality of adapter coupling head, and these devices generally are difficult to assort, and connect complicated during use.If after adopting this comprehensive tester, only need to adopt method of attachment shown in Figure 2 just can judge whether the base station has interference, and be equipped with all connecting lines, therefore can reach simple and practical effect.
Fig. 2 is the principle schematic of the two-way disturbed test assembly of the present invention.A kind of mobile communications network provided by the invention disturbs comprehensive tester, comprising:
First duplexer, this duplexer links to each other with antenna-feedback system by the ANT side interface;
Second duplexer, this duplexer links to each other with the base station by the BTS side interface;
Be connected the electric bridge between described first duplexer and described second duplexer, this electric bridge comprises base station testing port and antenna feeder test port.
Interference comprehensive tester of the present invention comprises at least and is illustrated in figure 2 as two-way disturbed test assembly, and this assembly has two kinds of effects in disturbing investigation, the one, be used to check whether antenna-feedback system has Intermodulation Interference to produce, and the 2nd, confirm whether base station itself produces interference.The BTS side interface connects the base station in engineering is used, the ANT side interface connects antenna-feedback system, two duplexers separate the base station uplink and downlink signals, uplink and downlink signals is divided into three the tunnel after by electric bridge, one the tunnel arrives base station or antenna feeder, and the antenna feeder disturbed test mouth of leading up to connects disturbance detection equipment or data acquisition equipment, for example frequency spectrograph, whether the testing base station signal produces Intermodulation Interference through antenna feeder, and whether the base station interference test port testing base station itself of leading up to produces interference.
Use interference comprehensive tester of the present invention can search the very high two-way interference signal of accounting in the mobile communications network, this instrument just can be searched external disturbance after being equipped with filter again.Therefore after using this comprehensive tester, not only greatly reduce the technical difficulty of disturbing investigation, and improved the operating efficiency of disturbing investigation greatly.
In the middle of embodiment, disturb frequently in order to test with adjacent therein, the present invention also comprises:
The 3rd duplexer, an end of this duplexer links to each other with described antenna-feedback system, and its other end comprises the RX interface;
The power splitter that links to each other with the RX interface of described the 3rd duplexer;
The up frequency-selector of multifrequency point that links to each other with described power splitter, the up frequency-selector of this multifrequency point comprise with the adjacent port of disturbed test frequently.
Fig. 3 is the principle schematic of intermodulation of the present invention/adjacent together assembly of disturbed test frequently.As shown in Figure 3, also comprise: high-power power amplifier and multifrequency point signal generator; Wherein,
Described high-power power amplifier is connected between the TX interface of described multifrequency point signal generator and described the 3rd duplexer;
Described power splitter comprises the Intermodulation Interference test port.
Interference comprehensive tester of the present invention can also comprise intermodulation/adjacent together assembly of disturbed test frequently as shown in Figure 3, when testing passive intermodulation and active equipment reflection Intermodulation Interference, overloading power amplifier output frequently multi-path large power signal, frequency spectrograph is connected to inter-modulated signal test port test reflection Intermodulation Interference signal and intermodulation group effect signal; If close high power amplifier this moment, be connected to adjacent signal testing mouth frequently with the adjacent time-frequency spectrometer of frequently testing, the signal of reception can be observed in complex electromagnetic environments with adjacent disturbed condition frequently by frequency spectrograph after frequency-selector filtering.
Wherein, be connected up low-frequency noise amplifier between described the 3rd duplexer RX interface and the described power splitter.When testing passive intermodulation and active equipment reflection Intermodulation Interference, overloading power amplifier output frequently multi-path large power signal, disturbance detection equipment or data acquisition equipment are connected to inter-modulated signal test port test reflection Intermodulation Interference signal and intermodulation group effect signal, these signals output to disturbance detection equipment or data acquisition equipment after all amplifying by up low-frequency noise amplifier, up low-frequency noise amplifier has certain up gain, less signal can be amplified, to find less interference, perhaps when using the lower frequency spectrograph of sensitivity, also can find to disturb.If close high power amplifier, when carrying out with neighbour's disturbed test frequently, frequency spectrograph is connected to adjacent signal testing mouth frequently, the signal that receives can be observed in complex electromagnetic environments with adjacent disturbed condition frequently by frequency spectrograph after frequency-selector filtering, if frequency spectrograph sensitivity is relatively poor, observe after then can signal being amplified by up LNA equally.
So far, the present invention relates to mobile communications network and disturb comprehensive tester, comprise two-way test suite of base station interference and intermodulation/adjacent together assembly of disturbed test frequently.Wherein the two-way test suite of base station interference comprises ANT side ports, ANT side duplexer, electric bridge, BTS side duplexer, BTS side interface, base station interference test port and antenna feeder disturbed test mouth; Intermodulation ﹠ with the adjacent assembly of disturbed test frequently comprise multifrequency point signal generator, high power amplifier, duplexer, antenna feeder interface, power splitter, up low-frequency noise amplifier, the up frequency-selector of multifrequency point, with adjacent disturbed test mouth and Intermodulation Interference test port frequently.
In the middle of embodiment,, the present invention includes therein in order to investigate some hidden problems:
Frequency spectrograph, this frequency spectrograph can link to each other with one of described Intermodulation Interference test port with described base station testing port, described antenna feeder test port, the described adjacent together port of disturbed test frequently.
Adopt common intermodulation instrument owing to can only read the size of inter-modulated signal, can not see actual interference spectrum figure.Therefore less for part Intermodulation Interference signal, but broadband clutter interference (being commonly called as the arcing sparking) problem is arranged, can form strongly disturbing problem device and equipment can't accurately be located to the base station.Though it is less also can't to locate Intermodulation Interference, actual also little to base station interference, there is intermodulation group effect, under the scene of weak covering, have a strong impact on the problem passive device and the active equipment of the up speech quality in base station.But the present invention cooperates frequency spectrograph by the integrated interference tester, can see actual interference spectrum figure, is very easy to find these hidden problems.
As Fig. 2 or first duplexer, second duplexer and the 3rd duplexer of having comprised shown in Figure 3, the frequency range of the above duplexer is 0.7～3GHz.Its role is to, make this interference comprehensive tester can be applicable to the used frequency range of all Frequency Division Duplexing (FDD) mobile communication system.
The signal that transmits between described antenna-feedback system and the described duplexer comprises the 2G/3G/4G wireless communication network signal.This interference comprehensive tester is widely used in various cordless communication networks.
The rated power of described high power amplifier as shown in Figure 3 at 10W between the 400W.Its role is to satisfy current and the development in future needs.
Described multifrequency point signal generator as shown in Figure 3 or the frequency number in the up frequency-selector of described multifrequency point be more than or equal to 2, and the frequency number can be set.Its role is to, can test group intermodulation effect more for a long time, be set to test intermodulation inhibition degree at 2 o'clock when the frequency that transmits.
Power in the described multifrequency point signal generator is as shown in Figure 3 adjusted stepping and is not less than 1dB, and adjusting range is greater than 10dB.Its role is to, adjust the less and adjusting range of step-length and can conveniently simulate when big and run into various situations in the real work.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a mobile communications network disturbs comprehensive tester, it is characterized in that, comprising:
First duplexer, this duplexer links to each other with antenna-feedback system by the ANT side interface;
Second duplexer, this duplexer links to each other with the base station by the BTS side interface;
Be connected the electric bridge between described first duplexer and described second duplexer, this electric bridge comprises base station testing port and antenna feeder test port.
2. mobile communications network according to claim 1 disturbs comprehensive tester, it is characterized in that, also comprises:
The 3rd duplexer, an end of this duplexer links to each other with described antenna-feedback system, and its other end comprises the RX interface;
The power splitter that links to each other with the RX interface of described the 3rd duplexer;
The up frequency-selector of multifrequency point that links to each other with described power splitter, the up frequency-selector of this multifrequency point comprise with the adjacent port of disturbed test frequently.
3. mobile communications network according to claim 2 disturbs comprehensive tester, it is characterized in that, also comprises: high-power power amplifier and multifrequency point signal generator; Wherein,
Described high-power power amplifier is connected between the TX interface of described multifrequency point signal generator and described the 3rd duplexer;
Described power splitter comprises the Intermodulation Interference test port.
4. disturb comprehensive tester according to claim 2 or 3 described mobile communications networks, it is characterized in that, also comprise:
Be connected the up low-frequency noise amplifier between described the 3rd duplexer RX interface and the described power splitter.
5. disturb comprehensive tester according to each described mobile communications network of claim 1 to 4, it is characterized in that, comprising:
Frequency spectrograph, this frequency spectrograph links to each other with one of described Intermodulation Interference test port with described base station testing port, described antenna feeder test port, the described adjacent together port of disturbed test frequently.
6. mobile communications network according to claim 5 disturbs comprehensive tester, it is characterized in that:
The frequency range of described duplexer is 0.7～3GHz.
7. mobile communications network according to claim 5 disturbs comprehensive tester, it is characterized in that:
The signal that transmits between described antenna-feedback system and the described duplexer comprises the 2G/3G/4G wireless communication network signal.
8. mobile communications network according to claim 5 disturbs comprehensive tester, it is characterized in that:
The rated power of described high power amplifier at 10W between the 400W.
9. mobile communications network according to claim 5 disturbs comprehensive tester, it is characterized in that:
Frequency number in described multifrequency point signal generator or the up frequency-selector of described multifrequency point is more than or equal to 2, and the frequency number can be set.
10. mobile communications network according to claim 5 disturbs comprehensive tester, it is characterized in that:
Power in the described multifrequency point signal generator is adjusted stepping and is not less than 1dB, and adjusting range is greater than 10dB.
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| CN201310109880.1A CN103220051B (en) | 2013-03-29 | 2013-03-29 | Mobile communication network interference comprehensive tester |
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| CN201310109880.1A CN103220051B (en) | 2013-03-29 | 2013-03-29 | Mobile communication network interference comprehensive tester |
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| CN103220051B CN103220051B (en) | 2015-04-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103972629A (en) * | 2014-04-14 | 2014-08-06 | 上海华为技术有限公司 | Combiner, base station, signal combining system and signal transmission method |
| CN107465464A (en) * | 2017-09-05 | 2017-12-12 | 广东阿尔创通信技术股份有限公司 | Mobile communication multiband sourceless seism tester and method of testing |
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| CN101345546A (en) * | 2007-07-11 | 2009-01-14 | 中国电信股份有限公司 | Method and system for confirming interference between base stations of mobile communication system |
| CN102237924A (en) * | 2011-07-22 | 2011-11-09 | 京信通信系统（中国）有限公司 | Method and device for detecting interference of downlink in uplink of repeater |
| CN102571239A (en) * | 2012-01-13 | 2012-07-11 | 中兴通讯股份有限公司 | Test system for radio frequency index |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101345546A (en) * | 2007-07-11 | 2009-01-14 | 中国电信股份有限公司 | Method and system for confirming interference between base stations of mobile communication system |
| CN102237924A (en) * | 2011-07-22 | 2011-11-09 | 京信通信系统（中国）有限公司 | Method and device for detecting interference of downlink in uplink of repeater |
| CN102571239A (en) * | 2012-01-13 | 2012-07-11 | 中兴通讯股份有限公司 | Test system for radio frequency index |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103972629A (en) * | 2014-04-14 | 2014-08-06 | 上海华为技术有限公司 | Combiner, base station, signal combining system and signal transmission method |
| CN103972629B (en) * | 2014-04-14 | 2016-11-23 | 上海华为技术有限公司 | A kind of combiner, base station, signal close road system and method for transmitting signals |
| CN107465464A (en) * | 2017-09-05 | 2017-12-12 | 广东阿尔创通信技术股份有限公司 | Mobile communication multiband sourceless seism tester and method of testing |
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| CN103220051B (en) | 2015-04-08 |
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Owner name: JINGXIN COMMUNICATION SYSTEM CO LTD (GUANGZHOU) Free format text: FORMER OWNER: COMBA TELECOM SYSTEMS (CHINA) CO., LTD. Effective date: 20150824 |
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Effective date of registration: 20150824 Address after: 510663 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Address before: 510663 Luogang District Science City, Guangzhou, Shenzhou Road, No. 10, Guangdong Patentee before: Comba Telecom System (China) Co., Ltd. |
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Granted publication date: 20150408 Termination date: 20190329 |