CN102325332B - Multi-carrier base station coverage extension device system - Google Patents
Multi-carrier base station coverage extension device system Download PDFInfo
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- CN102325332B CN102325332B CN201110207972.4A CN201110207972A CN102325332B CN 102325332 B CN102325332 B CN 102325332B CN 201110207972 A CN201110207972 A CN 201110207972A CN 102325332 B CN102325332 B CN 102325332B
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Abstract
The invention discloses a multi-carrier base station coverage extension device system comprising a main antenna and a main link, which are sequentially connected in series, as well as a diversity antenna and a diversity link, which are sequentially connected in series, wherein the main link and the diversity link are simultaneously connected with a base station BTS (base transceiver station), the main link comprises a first duplexer and a third duplexer, the diversity link comprises a second duplexer, the first duplexer and the second duplexer are simultaneously connected with a combiner, and the combiner is sequentially connected with a multi-carrier power amplifier and the third duplexer in series. Compared with an existing multi-carrier base station amplifier, the system has the following characteristics: 1) the volume is small; 2) the cost is low; 3) the system is conductive to layout of equipment; and 4) after the volume of the duplexers is reduced, the duplexers can adopt various processes and materials, such as cutting-off, ceramic and the like to achieve the excellent performances, and the reliability and the stability of the equipment are greatly improved.
Description
Technical field
The present invention relates to a kind of Multi-carrier base station coverage extension device system.
Background technology
Fast development along with mobile communication, the overlay area of mobile communications network all in various degree have a weak signal area, along with the expansion of network size, the penetration capacity problem of the cost of signal seamless coverage, benefit and signal is also just more aobvious important, and electromagnetic environment is also more complicated.The tradition covering method is not quite reasonable on solution residential quarter, hill path covering, outlying little traffic zone cost of investment and benefit, and difficulty is also increasing, particularly, to some remote districts and the few blind area of number of users, build the base station cost too high, infrastructure is also more complicated; Existing method is to add base station or repeater near the blind area of blocking in hill path.Add the base station cost of investment large, for solving distance, only have the blind area of hundreds of rice or several kilometers to go to build a base station and will invest RMB up to a million, must be within the design coverage of base station, have suitable incoming signal level just passable and build repeater, and the repeater coverage be little, stable not, maintenance cost is high, maintenance is inconvenient, affect network index.Both have run into again the problem that addressing is difficult and maintenance site increases.It is exactly to produce in this case that Multi-Carrier basestation extends covering.
Existing Multi-carrier base station coverage extension device is that the base station high-power signal is first passed through to cavity duplexer, mixer, then after being amplified, by antenna, carry out wireless coverage after high power attenuator, like this can be large because of the volume of cavity duplexer, mixer, cost is high causes that the whole system volume is large, cost is high.
In existing Multi-Carrier basestation coverage extension system, mainly by up main collection link, with up diversity link, and down link forms, wherein in up main collection link, there is a high-power adjustable attenuator, in existing technology, high-power adjustable attenuator operated by rotary motion is the position between synthesizer and Multi-Carrier Power Amplifier in down link, its operation principle is after downstream signal is sent in base station, advancing the filtering of duplexer processes, synthetic in mixer, again according to the decay of high-power adjustable attenuator, amplify processing finally by crossing Multi-Carrier Power Amplifier, finally amplifying signal is sent, advanced main collection antenna signal was sent to the user.
Above-mentioned, arrange, the problem of existence has: 1, at this, high-power adjustable attenuator is set, causes the filtering in advance of duplexer to process, require harshness, therefore, and duplexer herein, what need to adopt is the cavity duplexer that volume is large, cost is high.The base station system of therefore building on this basis, cost requirement is higher, and volume is larger.2, in above-mentioned existing Multi-Carrier basestation coverage extension system, be, after adopting first decay, to carry out immediately the processing of amplifying signal, therefore can cause the unstable of signal, therefore can cause existing system coefficient of safety to reduce.
Summary of the invention
The object of the invention is to, provide a kind of low cost, conserve space, the more much higher carrier wave of reliability and stability base station to extend the cladding system system.
Concrete scheme of the present invention is as follows: a kind of Multi-carrier base station coverage extension device system, the main collection antenna and the main collection link that comprise series connection successively, the diversity antenna and the diversity link that also comprise series connection successively, described main collection link is connected with base station BTS with the diversity link simultaneously, and described main collection link comprises first duplexer and the 3rd duplexer, described diversity link comprises the second duplexer, and described first duplexer and the second duplexer are connected with mixer simultaneously, described mixer is in series with Multi-Carrier Power Amplifier and the 3rd duplexer successively.
Described main collection link mainly is followed in series to form by the 3rd duplexer, the first LNA, first duplexer, first power adjustable attenuator, and described first power adjustable attenuator is connected with base station BTS, and described the 3rd duplexer is connected with main collection antenna.
Described first duplexer and the 3rd duplexer are ceramic duplexer.
Also be in series with the first by-pass switch between described first power adjustable attenuator and base station BTS, between described the 3rd duplexer and main collection antenna, also be in series with the 3rd by-pass switch, described the 3rd by-pass switch also is connected with the first by-pass switch.
The diversity link mainly is followed in series to form by filter, the second LNA, the second duplexer, second largest power adjustable attenuator, and described second largest power adjustable attenuator is connected with base station BTS, and described filter is connected with diversity antenna.
Described the second duplexer is ceramic duplexer.
Also be in series with the second by-pass switch between described second largest power adjustable attenuator and base station BTS, also be in series with the 4th by-pass switch between filter and diversity antenna, and described the second by-pass switch also is connected with the 4th by-pass switch.
The grounding leg of described mixer is connected with earth connection, simultaneously grounding leg be in series with resistance between earth connection is connected.
Described mixer is dual-frequency channel merger.
Design principle of the present invention is as follows: in existing technology, wherein said high-power adjustable attenuator operated by rotary motion is between mixer and Multi-Carrier Power Amplifier, in descending process, after signal sends from base station BTS, closed road after directly crossing duplexer, in the decay through the excessive power adjustable attenuator, after amplifying, sends Multi-Carrier Power Amplifier.Thereby duplexer and mixer in this design need large volume and expensive equipment.Be unfavorable for base station construction.For this reason, the present invention, it is two that high-power adjustable attenuator is set up in consideration, is above-mentioned first power adjustable attenuator and second largest power adjustable attenuator, and this first power adjustable attenuator and second largest power adjustable attenuator are close to the base station BTS setting as much as possible.Therefore in the present invention's design, the signal that base station BTS is sent is directly sent in first power adjustable attenuator and second largest power adjustable attenuator, decayed, signal after decay, therefore deliver to respectively again duplexer, owing to being signal after decay, the requirement of duplexer reduced, therefore, the duplexer in the present invention just use be ceramic duplexer low-cost, small size.In like manner the volume of the mixer in the present invention reduce, cost.Thereby reduce cost and the design space of body series.
Operation principle of the present invention is as follows, down link: the BTS0 that transmits of base station BTS, BTS1 is respectively after the first by-pass switch and the second by-pass switch, carry out power attenuation to the 0dBm left and right through first power adjustable attenuator and second largest power adjustable attenuator respectively again, then respectively after first duplexer and the second duplexer filtering, and downstream signal is separated, filtered signal BTS0, BTS1 enters mixer, BTS0 and BTS1 two-way downstream signal are closed to road, close behind road to deliver in Multi-Carrier Power Amplifier and carry out power amplification, carry out filtering through the 3rd duplexer again, deliver to main collection antenna after the 3rd by-pass switch after, with electromagnetic form, launch, reach the purpose of wireless coverage.
Up link is divided into main collection link and diversity link.Wherein main collection link is: by the up signal of main collection antenna reception, after the 3rd by-pass switch of this Multi-carrier base station coverage extension device, enter the 3rd duplexer and carry out up filtering, after zoom in signal through the first LNA docking and amplified, then pass through first duplexer filtering, enter the first by-pass switch after first power adjustable attenuator decay, finally send to base station BTS; Wherein the diversity link is: by diversity antenna, receive upward signal, after the 4th by-pass switch of this Multi-carrier base station coverage extension device, enter filter and carry out up filtering, zoom in signal and amplified by too low second docking of making an uproar, then through the second duplexer filtering, carry out signal attenuation through second largest power adjustable attenuator again, after enter the second by-pass switch, finally send to base station BTS.
Wherein said the second by-pass switch also is connected with the 4th by-pass switch, and the 3rd by-pass switch also is connected with the first by-pass switch; When up link or down link break down, or other can't operating state, can provide switching signal to the above second by-pass switch, the 4th by-pass switch connection, the 3rd by-pass switch, the first by-pass switch, make the second by-pass switch be connected UNICOM with the 4th by-pass switch, the 3rd by-pass switch and the first by-pass switch UNICOM, can make in the situation that fault, native system can also continue to send and acknowledge(ment) signal.
Above-mentioned link comprises the standards such as WCDMA, CDMA, TD-SCDMA, LTE.But be not limited to the standards such as above-mentioned WCDMA, CDMA, TD-SCDMA, LTE.
The present invention and existing multi-carrier base station relatively have following characteristics.
1, the invention enables the volume of duplexer and mixer to reduce approximately 20 times, make the volume of whole set equipment reduce.
2, the invention enables approximately 50 times of the cost reductions of duplexer and mixer, make the complete machine cost.
3, the present invention reduces after the volume of duplexer, synthesizer the layout that is conducive to equipment.
4, the present invention can be so that duplexer, by the kinds of processes such as, pottery and material manufacture, to reach superior performance, have improved the reliability and stability of equipment greatly after reducing the volume of duplexer.
The accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one structured flowchart.
The structured flowchart that Fig. 2 is the embodiment of the present invention two.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment mono-
The present invention as shown in Figure 1,, a kind of Multi-carrier base station coverage extension device system, the main collection antenna and the main collection link that comprise series connection successively, also comprise diversity antenna and the diversity link of connecting successively, and described main collection link is connected with base station BTS with the diversity link simultaneously.
Main collection link comprises first duplexer and the 3rd duplexer, and the diversity link comprises the second duplexer, and first duplexer is connected with mixer with the second duplexer simultaneously, and mixer is in series with Multi-Carrier Power Amplifier and the 3rd duplexer successively.
Main collection link mainly is followed in series to form by the 3rd duplexer, the first LNA, first duplexer, first power adjustable attenuator, and first power adjustable attenuator is connected with base station BTS, and the 3rd duplexer is connected with main collection antenna.The diversity link mainly is followed in series to form by filter, the second LNA, the second duplexer, second largest power adjustable attenuator, and second largest power adjustable attenuator is connected with base station BTS, and filter is connected with diversity antenna.
Also be in series with the first by-pass switch between first power adjustable attenuator and base station BTS, between the 3rd duplexer and main collection antenna, also be in series with the 3rd by-pass switch, the 3rd by-pass switch also is connected with the first by-pass switch.Also be in series with the second by-pass switch between second largest power adjustable attenuator and base station BTS, also be in series with the 4th by-pass switch between filter and diversity antenna, the second by-pass switch also is connected with the 4th by-pass switch.
First duplexer and the 3rd duplexer are ceramic duplexer.The second duplexer is ceramic duplexer.
The grounding leg of mixer is connected with earth connection, simultaneously grounding leg be in series with resistance between earth connection is connected.Mixer is dual-frequency channel merger.
Embodiment bis-
As shown in Figure 2, further, in order to increase the extension coverage of base station, we the main Ji Ta that can also connect between main collection antenna and the 3rd by-pass switch is put; And between diversity antenna and the 4th by-pass switch, series connection diversity tower is put.Therefore can further increase the coverage of native system.
Just can better realize the present invention as mentioned above.
Claims (7)
1. a Multi-carrier base station coverage extension device system, it is characterized in that, the main collection antenna and the main collection link that comprise series connection successively, the diversity antenna and the diversity link that also comprise series connection successively, described main collection link is connected with base station BTS with the diversity link simultaneously, and described main collection link comprises first duplexer and the 3rd duplexer, described diversity link comprises the second duplexer, and described first duplexer and the second duplexer are connected with mixer simultaneously, described mixer is in series with Multi-Carrier Power Amplifier and the 3rd duplexer successively;
Described main collection link mainly is followed in series to form by the 3rd duplexer, the first LNA, first duplexer, first power adjustable attenuator, and described first power adjustable attenuator is connected with base station BTS, and described the 3rd duplexer is connected with main collection antenna;
Described diversity link mainly is followed in series to form by filter, the second LNA, the second duplexer, second largest power adjustable attenuator, and described second largest power adjustable attenuator is connected with base station BTS, and described filter is connected with diversity antenna.
2. a kind of Multi-carrier base station coverage extension device system according to claim 1, is characterized in that, described first duplexer and the 3rd duplexer are ceramic duplexer.
3. a kind of Multi-carrier base station coverage extension device system according to claim 1, it is characterized in that, also be in series with the first by-pass switch between described first power adjustable attenuator and base station BTS, also be in series with the 3rd by-pass switch between described the 3rd duplexer and main collection antenna, described the 3rd by-pass switch also is connected with the first by-pass switch.
4. a kind of Multi-carrier base station coverage extension device system according to claim 1, is characterized in that, described the second duplexer is ceramic duplexer.
5. a kind of Multi-carrier base station coverage extension device system according to claim 1, it is characterized in that, also be in series with the second by-pass switch between described second largest power adjustable attenuator and base station BTS, also be in series with the 4th by-pass switch between filter and diversity antenna, and described the second by-pass switch also is connected with the 4th by-pass switch.
6. a kind of Multi-carrier base station coverage extension device system according to claim 1, is characterized in that, the grounding leg of described mixer is connected with earth connection, simultaneously grounding leg be in series with resistance between earth connection is connected.
7. a kind of Multi-carrier base station coverage extension device system according to claim 1, is characterized in that, described mixer is dual-frequency channel merger.
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| CN201110207972.4A CN102325332B (en) | 2011-07-25 | 2011-07-25 | Multi-carrier base station coverage extension device system |
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| CN201110207972.4A CN102325332B (en) | 2011-07-25 | 2011-07-25 | Multi-carrier base station coverage extension device system |
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| CN102325332B true CN102325332B (en) | 2014-01-01 |
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| CN102833010B (en) * | 2012-08-10 | 2016-06-29 | 武汉虹信通信技术有限责任公司 | A kind of passive intermodulation ameliorative way of base stations in mobile communication system signal |
| CN103596188B (en) * | 2012-08-14 | 2017-04-05 | 京信通信系统（中国）有限公司 | Equipment and control method are put based on the large-power tower of searching carrier and assignment of carriers |
| CN107534497B (en) * | 2016-03-31 | 2020-06-09 | 华为技术有限公司 | Fault detection method and fault detection equipment for external antenna |
| CN106941364A (en) * | 2017-04-24 | 2017-07-11 | 京信通信技术(广州)有限公司 | The access device of distributing antenna system |
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| CN2807620Y (en) * | 2005-06-22 | 2006-08-16 | 上海和广通信技术有限公司 | Repeater in mobile communications system |
| CN2865168Y (en) * | 2005-11-15 | 2007-01-31 | 中兴通讯股份有限公司 | Equipment and base system for base station sharing antenna feedback |
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| US8150309B2 (en) * | 2006-11-15 | 2012-04-03 | Powerwave Technologies, Inc. | Stability recovery for an on-frequency RF repeater with adaptive echo cancellation |
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| CN2807620Y (en) * | 2005-06-22 | 2006-08-16 | 上海和广通信技术有限公司 | Repeater in mobile communications system |
| CN2865168Y (en) * | 2005-11-15 | 2007-01-31 | 中兴通讯股份有限公司 | Equipment and base system for base station sharing antenna feedback |
| CN101425833A (en) * | 2008-12-09 | 2009-05-06 | 成都福兰特电子技术有限公司 | Base station signal optimization system and method thereof |
| CN202121785U (en) * | 2011-07-25 | 2012-01-18 | 芯通科技（成都）有限公司 | Extending and covering device system for multicarrier base station |
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