CN103297987B - Based on the mobile communication indoor differential distribution system of power line transmission - Google Patents
Based on the mobile communication indoor differential distribution system of power line transmission Download PDFInfo
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- CN103297987B CN103297987B CN201310220823.0A CN201310220823A CN103297987B CN 103297987 B CN103297987 B CN 103297987B CN 201310220823 A CN201310220823 A CN 201310220823A CN 103297987 B CN103297987 B CN 103297987B
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Abstract
The invention discloses a kind of mobile communication indoor differential distribution system based on power line transmission, mainly solve in the indoor distributed system existed in prior art and use radio frequency cable inlet wire to communicate to connect, make the installation cost of indoor communication system higher, and the problem that installation difficulty is larger.Should based on the mobile communication indoor differential distribution system of power line transmission, comprise micro-front end and more than one micro-rear end, described micro-front end is connected by power line with more than one micro-rear end.By such scheme, cover while invention achieves multiple types signal of communication, and networking is simple, easy for installation, object with low cost, has very high practical value and promotional value.
Description
Technical field
The present invention relates to a kind of differential distribution system, specifically, relate to a kind of mobile communication indoor differential distribution system based on power line transmission.
Background technology
Along with the construction of the office spaces such as office building, commercial center, hotel, indoor pedestrian colony increases rapidly, and indoor user is had higher requirement to telephone traffic and coverage.Therefore optimize indoor network coverage and quality, attract " focus " number of users will to be the key that operator obtains competitive advantage.
From the network coverage, indoor distributed system can effectively solve indoor blind area and interference problem; From network capacity, indoor distributed system can the effective telephone traffic of close quarters in absorption chamber, improves power system capacity, alleviates the pressure of outdoor base station, reduce the quantity of outdoor base station, reduce configuration; From network quality, indoor distributed system not only increases in-door covering quality, and reduces the load of outdoor system.
At present, large-scale indoor coverage of signal problem has substantially continued to use indoor distributed system or community embellished antenna compartment system solves, for indoor coverage of signal problem among a small circle, as the indoor coverage of signal of 2000 square meter areas, traditional indoor distributed system cost is high, installation difficulty, perfectly can not solve indoor coverage of signal problem among a small circle.
Alms giver's end of tradition indoor distributed system needs to be connected with radio frequency cable with repeating transmission end, and the application of radio frequency cable improves the installation cost of system on the one hand, also improves the installation difficulty of system simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of mobile communication indoor differential distribution system based on power line transmission, mainly solving in the indoor distributed system existed in prior art uses radio frequency cable inlet wire to communicate to connect, make the installation cost of indoor communication system higher, and the problem that installation difficulty is larger.
To achieve these goals, the technical solution used in the present invention is as follows:
Based on the mobile communication indoor differential distribution system of power line transmission, comprise micro-front end and more than one micro-rear end, described micro-front end is connected by power line with more than one micro-rear end.
Specifically, described micro-front end comprises donor antenna, the first duplexer be bi-directionally connected with donor antenna, the forward direction low noise amplifier that input is connected with first duplexer, the forward direction input filter that input is connected with forward direction low noise amplifier, down converter before input is connected with forward direction input filter, the forward direction analog to digital converter that input is connected with front down converter, the forward direction ICS processing module that input is connected with forward direction analog to digital converter, the forward signal power line modulation module that input is connected with forward direction ICS processing module, the reverse signal power line demodulation module that input is connected with forward signal power line modulation module, the reverse digital to analog converter that input is connected with reverse signal power line demodulation module, the reverse upconverter that input is connected with reverse digital to analog converter, the reverse output filter that input is connected with reverse upconverter, input is connected with reverse output filter, the reverse power amplifier that output is connected with first duplexer, described more than one micro-rear end is all connected between the output of forward signal power line modulation module and the input of reverse signal power line demodulation module.
Further, described micro-rear end comprises retransmitting antenna, the second duplexer be bi-directionally connected with retransmitting antenna, the reverse low noise amplifier that input is connected with the second duplexer, the reverse input filter that input is connected with reverse low noise amplifier, the reverse low-converter that input is connected with reverse input filter, the reverse analog to digital converter that input is connected with reverse low-converter, the reverse ICS processing module that input is connected with reverse analog to digital converter, the reverse signal power line modulation module that input is connected with reverse ICS processing module, the forward signal power line demodulation module that input is connected with reverse signal power line modulation module, the forward direction digital to analog converter that input is connected with forward signal power line demodulation module, up-converter before input is connected with forward direction digital to analog converter, the forward direction output filter that input is connected with front up-converter, input is connected with forward direction output filter, the forward direction power amplifier that output is connected with the second duplexer, the output of described reverse signal power line modulation module and the input of forward signal power line demodulation module are all connected between the output of forward signal power line modulation module and the input of reverse signal power line demodulation module.
In the present invention, described donor antenna is identical with retransmitting antenna type, and is at least one in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention has abandoned in prior art the mode adopting radio frequency cable inlet wire to communicate, power line is adopted to carry out communication signal transmissions, and then thoroughly solve the wiring problem of mobile communication indoor covering, as long as make, the ground of electricity is convenient can realize mobile communication signal transmission, special wiring is not even needed between micro-front end of system and micro-rear end, only need plug-in can realize communication, use very convenient.
(2) in the present invention by ICS(InterferenceCancellationSystem) module, namely echo interference cancellation module is applied in split type system equipment, thus effectively ensure that the isolation between micro-front end and micro-rear end, and then ensure that micro-front end and micro-rear end radiofrequency signal can not produce self-excitation, effectively ensure that communication efficiency.
(3) in the present invention, donor antenna is identical with retransmitting antenna type, and be at least one in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna etc., the signal of communication making native system both can realize separately a kind of standard covers, the signal of communication that also can realize multiple types covers simultaneously, networking is very convenient, reduce the cost of each operator repeated construction, there is outstanding substantive distinguishing features and marked improvement, be applicable to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is system block diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.
Embodiment
Radio frequency cable inlet wire is used to communicate to connect in order to solve in the indoor distributed system that exists in prior art, make the installation cost of indoor communication system higher, and the problem that installation difficulty is larger, as shown in Figure 1, the invention discloses a kind of mobile communication indoor differential distribution system based on power line transmission, comprise and connect for ring-type along clockwise direction, the i.e. first duplexer that is connected with the input of the latter of the former output, forward direction low noise amplifier, forward direction input filter, front down converter, forward direction analog to digital converter, forward direction ICS processing module, forward signal power line modulation module, reverse signal power line demodulation module, reverse digital to analog converter, reverse upconverter, reverse output filter and reverse power amplifier, wherein, the output of reverse power amplifier is connected with first duplexer, first duplexer has been bi-directionally connected donor antenna, which together form micro-front end, connect for ring-type in the counterclockwise direction, i.e. the second duplexer of being connected with the output of the latter of the former input, forward direction power amplifier, forward direction output filter, front up-converter, forward direction digital to analog converter, forward signal power line demodulation module, reverse signal power line modulation module, reverse ICS processing module, reverse analog to digital converter, reverse low-converter, reverse input filter and reverse low noise amplifier, wherein, the input of reverse low noise amplifier is connected with the second duplexer, second duplexer has been bi-directionally connected retransmitting antenna, which together form micro-rear end.
In the present invention, according to the demand of actual coverage, micro-front end can connect multiple micro-rear end, between the output that the input of the output and forward signal power line demodulation module that are the reverse signal power line modulation module of micro-rear end when the two is connected is all connected to the forward signal power line modulation module of micro-front end and the input of reverse signal power line demodulation module.
As preferably, multiple communication standard is supported in micro-front end and micro-rear end, it can be the combination of a kind of standard in GSM, CDMA, WCDMA, DCS, TD-SCDMA, TD-LTE, FDD-LTE or multiple types, namely donor antenna is identical with retransmitting antenna type, and is at least one in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna.
Operation principle of the present invention is as follows:
Base station signal is by micro-front end receiver and amplify, base station signal after amplification down-converts to intermediate-freuqncy signal by front down converter, and be digital signal by forward direction analog to digital converter analog-to-digital conversion, digital signal after conversion is through forward direction ICS processing module (echo interference elimination system), again by forward signal power line modulation module by digital signal modulated on power line, just carry out Signal transmissions by power line afterwards.Power line can access one or more micro-rear end and carry out indoor coverage of signal, power line signal is first demodulated into digital signal by forward signal power line demodulation module by micro-rear end equipment, digital signal converts intermediate-freuqncy signal to through forward direction digital to analog converter, intermediate-freuqncy signal up-converts to radiofrequency signal by front up-converter, radiofrequency signal is by again amplifying, by antenna cover, formation retransmits signal, and just effectively can realize quorum sensing inhibitor.
In the present invention, each device, module are prior art, more do not speak more bright in this change.
According to above-described embodiment, just the present invention can be realized well.
Claims (2)
1., based on the mobile communication indoor differential distribution system of power line transmission, comprise micro-front end and more than one micro-rear end, it is characterized in that, described micro-front end is connected by power line with more than one micro-rear end;
Described micro-front end comprises donor antenna, the first duplexer be bi-directionally connected with donor antenna, the forward direction low noise amplifier that input is connected with first duplexer, the forward direction input filter that input is connected with forward direction low noise amplifier, down converter before input is connected with forward direction input filter, the forward direction analog to digital converter that input is connected with front down converter, the forward direction ICS processing module that input is connected with forward direction analog to digital converter, the forward signal power line modulation module that input is connected with forward direction ICS processing module, the reverse signal power line demodulation module that input is connected with forward signal power line modulation module, the reverse digital to analog converter that input is connected with reverse signal power line demodulation module, the reverse upconverter that input is connected with reverse digital to analog converter, the reverse output filter that input is connected with reverse upconverter, input is connected with reverse output filter, the reverse power amplifier that output is connected with first duplexer, described more than one micro-rear end is all connected between the output of forward signal power line modulation module and the input of reverse signal power line demodulation module,
Described micro-rear end comprises retransmitting antenna, the second duplexer be bi-directionally connected with retransmitting antenna, the reverse low noise amplifier that input is connected with the second duplexer, the reverse input filter that input is connected with reverse low noise amplifier, the reverse low-converter that input is connected with reverse input filter, the reverse analog to digital converter that input is connected with reverse low-converter, the reverse ICS processing module that input is connected with reverse analog to digital converter, the reverse signal power line modulation module that input is connected with reverse ICS processing module, the forward signal power line demodulation module that input is connected with reverse signal power line modulation module, the forward direction digital to analog converter that input is connected with forward signal power line demodulation module, up-converter before input is connected with forward direction digital to analog converter, the forward direction output filter that input is connected with front up-converter, input is connected with forward direction output filter, the forward direction power amplifier that output is connected with the second duplexer, the output of described reverse signal power line modulation module and the input of forward signal power line demodulation module are all connected between the output of forward signal power line modulation module and the input of reverse signal power line demodulation module.
2. the mobile communication indoor differential distribution system based on power line transmission according to claim 1, it is characterized in that, described donor antenna is identical with retransmitting antenna type, and is at least one in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna.
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| CN103297987B true CN103297987B (en) | 2016-04-20 |
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Citations (4)
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| CN101227661A (en) * | 2007-01-16 | 2008-07-23 | 华为技术有限公司 | Minitype base station using power line and charging module for power supply |
| JP2008245202A (en) * | 2007-03-29 | 2008-10-09 | Yamaha Corp | Bridge circuit for power line carrier communication, and network system therefor |
| CN101287182A (en) * | 2007-04-12 | 2008-10-15 | 华为技术有限公司 | Wireless communication system, method and device |
| CN203466973U (en) * | 2013-06-05 | 2014-03-05 | 四川省韬光通信有限公司 | Power line transmission-based mobile communication indoor micro distribution system |
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Patent Citations (4)
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|---|---|---|---|---|
| CN101227661A (en) * | 2007-01-16 | 2008-07-23 | 华为技术有限公司 | Minitype base station using power line and charging module for power supply |
| JP2008245202A (en) * | 2007-03-29 | 2008-10-09 | Yamaha Corp | Bridge circuit for power line carrier communication, and network system therefor |
| CN101287182A (en) * | 2007-04-12 | 2008-10-15 | 华为技术有限公司 | Wireless communication system, method and device |
| CN203466973U (en) * | 2013-06-05 | 2014-03-05 | 四川省韬光通信有限公司 | Power line transmission-based mobile communication indoor micro distribution system |
Non-Patent Citations (2)
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| 同频数字直放站回波干扰消除器的设计;李学易;《数字电视》;20101231;第1-3、5节以及图1-4 * |
| 数字电视直放站回波抑制的算法与实现;刘杰;《信息科技辑》;20111231;全文 * |
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Denomination of invention: Indoor micro distribution system of mobile communication based on power line transmission Effective date of registration: 20201214 Granted publication date: 20160420 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: SICHUAN TAOGUANG COMMUNICATION Co.,Ltd. Registration number: Y2020980009175 |
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Granted publication date: 20160420 |