CN103401820A - Mobile communication indoor microdistribution system - Google Patents
Mobile communication indoor microdistribution system Download PDFInfo
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- CN103401820A CN103401820A CN2013102923331A CN201310292333A CN103401820A CN 103401820 A CN103401820 A CN 103401820A CN 2013102923331 A CN2013102923331 A CN 2013102923331A CN 201310292333 A CN201310292333 A CN 201310292333A CN 103401820 A CN103401820 A CN 103401820A
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Abstract
The invention discloses a mobile communication indoor microdistribution system, which mainly solves the problems that in the prior art, the system structure of the indoor distribution system is complicated, the system cost is higher, the installation is difficult, the cost performance is not high, and the market popularization cannot be easily realized. The mobile communication indoor microdistribution system comprises a micro front end and more than one micro back end connected with the micro front end, wherein the micro front end comprises a first duplexer, a forward low-noise amplifier, a forward input filter, a forward lower frequency converter, a forward analog-to-digital converter, a forward ICS (Internet connection sharing) processing module, a forward digital-to-analog converter, a forward upper frequency converter, a reverse lower frequency converter, a reverse analog-to-digital converter, a reverse ICS processing module, a reverse digital-to-analog converter, a reverse upper frequency converter, a reverse output filter and a reverse power amplifier in sequential connection. Through the scheme, the mobile communication indoor microdistribution system reaches the goals that the simultaneous coverage of multi-system communication signals is realized, in addition, the networking is simple, the installation is convenient, the cost is low, and high practical values and popularization values are realized.
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.
Background technology
Along with the construction of the office spaces such as office building, commercial center, hotel, the indoor moving user group increases rapidly, and indoor user is had higher requirement to telephone traffic and coverage.Therefore optimize indoor network coverage and quality, attracting " focus " number of users will 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 is the telephone traffic of the interior close quarters of absorption chamber effectively, improves power system capacity, alleviates the pressure of outdoor base station, reduces quantity, the reduction configuration of outdoor base station; From network quality, indoor distributed system has not only improved indoor covering quality, and has reduced the load of outdoor system.
At present, large-scale indoor coverage of signal problem has substantially continued to use indoor distributed system or residential quarter embellished antenna compartment system solves, for indoor coverage of signal problem among a small circle, indoor coverage of signal as 2000 square metres of left and right areas, traditional indoor distributed system cost is high, the installation difficulty, can not perfectly solve indoor coverage of signal problem among a small circle, and the system architecture of traditional indoor distributed system is comparatively complicated, is not easy to marketing.
Summary of the invention
The object of the present invention is to provide a kind of mobile communication indoor differential distribution system, the system architecture that mainly solves the indoor distributed system that exists in prior art is comparatively complicated, and system cost is higher, installation is difficult, and cost performance is not high, is not easy to the problem of marketing.
To achieve these goals, the technical solution used in the present invention is as follows:
mobile communication indoor differential distribution system, comprise micro-front end and the micro-rear end more than that is connected with micro-front end respectively, described micro-front end comprises donor antenna, with the two-way first duplexer that is connected of 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 the forward direction low noise amplifier, the front down converter that input is connected with the 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 the forward direction analog to digital converter, the forward direction digital to analog converter that input is connected with forward direction ICS processing module, the front up-converter that input is connected with the forward direction digital to analog converter, the reverse low-converter that input is connected with front up-converter, 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 digital to analog converter that input is connected with reverse ICS processing 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, and input is connected in the output of front up-converter and oppositely between the input of low-converter, the second duplexer that output is connected with micro-rear end.
specifically, described micro-rear end comprises the 4th duplexer that input is connected with the second duplexer, the forward direction amplifier that input is connected with the 4th duplexer, the forward direction output filter that input is connected with the forward direction amplifier, the forward direction power amplifier that input is connected with the forward direction output filter, the 3rd duplexer that input is connected with the forward direction power amplifier, the reverse low noise amplifier that input is connected with the 3rd duplexer, the reverse input filter that input is connected with reverse low noise amplifier, input is connected with reverse input filter, the sign-changing amplifier that output is connected with the forward direction amplifier, the two-way retransmitting antenna that is connected with of described the 3rd duplexer.
In the present invention, described donor antenna is identical with the retransmitting antenna type, and is at least a 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) in the present invention by ICS(Interference Cancellation System) module, be that the echo interference cancellation module is applied in split type system equipment, thereby effectively guaranteed the isolation between micro-front end and micro-rear end, and then the radiofrequency signal of having guaranteed micro-front end and micro-rear end can not produce self-excitation, effectively guaranteed communication efficiency.
(2) in the present invention, donor antenna is identical with the retransmitting antenna type, and be at least a in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna etc., make native system both can realize separately that a kind of signal of communication of standard covered, the signal of communication that also can realize multiple types covers simultaneously, networking is very convenient, system architecture is comparatively simple and clear, reduced the cost of each operator's repeated construction, have outstanding substantive distinguishing features and marked improvement, be suitable for large-scale promotion application.
(3) in the present invention, by the ingehious design to micro-front end and micro-rear end, effectively improved communication quality, cost performance is higher, realistic demand, and antenna and amplifier are organically combined, simplified widely the equipment installation.
The accompanying drawing explanation
Fig. 1 is system block diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples, and embodiments of the present invention include but not limited to the following example.
Embodiment
for the system architecture that solves the indoor distributed system that exists in prior art comparatively complicated, system cost is higher, difficulty is installed, cost performance is not high, be not easy to the problem of marketing, as shown in Figure 1, the invention discloses a kind of mobile communication indoor differential distribution system, comprise and be connected to along clockwise direction ring-type, it is the first duplexer that the former output is connected with the latter's input, the forward direction low noise amplifier, the forward direction input filter, front down converter, the forward direction analog to digital converter, forward direction ICS processing module, the forward direction digital to analog converter, front up-converter, reverse low-converter, reverse analog to digital converter, reverse ICS processing module, reverse digital to analog converter, reverse upconverter, reverse output filter, reverse power amplifier, wherein oppositely the output of power amplifier is connected with first duplexer, the two-way donor antenna that is connected with of first duplexer, and the second duplexer that input is connected with front up-converter has formed micro-front end jointly, be connected to along clockwise direction ring-type, it is the forward direction amplifier that the former output is connected with the latter's input, the forward direction output filter, the forward direction power amplifier, the 3rd duplexer, reverse low noise amplifier, reverse input filter, sign-changing amplifier, wherein, the output of sign-changing amplifier is connected with the forward direction amplifier, the two-way retransmitting antenna that is connected with of the 3rd duplexer, and input is connected with the second duplexer, the 4th duplexer that output is connected with the forward direction amplifier has formed micro-rear end jointly, coverage requirement according to communication network, micro-front end can connect micro-rear end more than, each micro-rear end structure is identical.
As preferably, multiple communication standard is supported in micro-front end and micro-rear end, can be a kind of standard in GSM, CDMA, WCDMA, DCS, TD-SCDMA, TD-LTE, FDD-LTE or the combination of multiple types, be that donor antenna is identical with the retransmitting antenna type, and be at least a in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna.
the course of work of the present invention is as follows: the donor antenna in micro-front end receives the downstream signal from base station, this signal is radiofrequency signal, after first duplexer, downstream signal amplifies processing by the forward direction low noise amplifier, downstream signal after amplification filters the outer clutter of band through the forward direction input filter, filtered downstream signal becomes intermediate-freuqncy signal through front down converter from radiofrequency signal, intermediate-freuqncy signal becomes digital signal through the forward direction analog to digital converter by intermediate-freuqncy signal again, digital signal is carried out the ICS processing through forward direction ICS processing module, realize that echo disturbs elimination, by the forward direction digital to analog converter, become analog intermediate frequency signal afterwards, analog intermediate frequency signal reverts to radiofrequency signal through front up-converter again, this downlink radio-frequency signal sends to respectively each micro-rear end through the second duplexer and the power splitter of micro-front end,
After micro-rear end receives the downlink radio-frequency signal of micro-front end that arrives, through the 4th duplexer, by the forward direction amplifier, carry out the signal amplification, pass through again forward direction output filter filtering clutter, through the forward direction power amplifier, carry out power amplification more afterwards, and launched by retransmitting antenna through the 3rd duplexer;
Retransmitting antenna in micro-rear end receives the upward signal from mobile phone, this signal is radiofrequency signal, after the 3rd duplexer, upward signal amplifies processing by reverse low noise amplifier, upward signal after amplification filters the outer clutter of band through reverse input filter, filtered upward signal carries out the signal amplification through sign-changing amplifier, then carries out power amplification through reverse power amplifier, and by transmit by RF cable, arrives micro-front end through the 4th duplexer;
after micro-front end receives the up radiofrequency signal from micro-rear end, through the second duplexer, by reverse low-converter, carry out frequency-conversion processing, upward signal after frequency conversion becomes intermediate-freuqncy signal from radiofrequency signal, intermediate-freuqncy signal becomes digital signal through reverse analog to digital converter again, digital signal is carried out the ICS processing through reverse ICS processing module, realize that echo disturbs elimination, through echo, disturb the digital signal after eliminating to become intermediate-freuqncy signal by reverse digital to analog converter, intermediate-freuqncy signal reverts to radiofrequency signal through reverse upconverter again, pass through again reverse output filter filtering clutter, the upward signal that filters after clutter carries out power amplification through reverse power amplifier again, and launched by donor antenna through first duplexer.
In the present invention, each device, module are prior art, at this, just more do not speak more bright.
According to above-described embodiment, just can realize well the present invention.
Claims (3)
1. mobile communication indoor differential distribution system, comprise micro-front end and the micro-rear end more than that is connected with micro-front end respectively, it is characterized in that, described micro-front end comprises donor antenna, with the two-way first duplexer that is connected of 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 the forward direction low noise amplifier, the front down converter that input is connected with the 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 the forward direction analog to digital converter, the forward direction digital to analog converter that input is connected with forward direction ICS processing module, the front up-converter that input is connected with the forward direction digital to analog converter, the reverse low-converter that input is connected with front up-converter, 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 digital to analog converter that input is connected with reverse ICS processing 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, and input is connected in the output of front up-converter and oppositely between the input of low-converter, the second duplexer that output is connected with micro-rear end.
2. mobile communication indoor differential distribution system according to claim 1, it is characterized in that, described micro-rear end comprises the 4th duplexer that input is connected with the second duplexer, the forward direction amplifier that input is connected with the 4th duplexer, the forward direction output filter that input is connected with the forward direction amplifier, the forward direction power amplifier that input is connected with the forward direction output filter, the 3rd duplexer that input is connected with the forward direction power amplifier, the reverse low noise amplifier that input is connected with the 3rd duplexer, the reverse input filter that input is connected with reverse low noise amplifier, input is connected with reverse input filter, the sign-changing amplifier that output is connected with the forward direction amplifier, the two-way retransmitting antenna that is connected with of described the 3rd duplexer.
3. mobile communication indoor differential distribution system according to claim 2, it is characterized in that, described donor antenna is identical with the retransmitting antenna type, and is at least a in GSM antenna, CDMA antenna, WCDMA antenna, DCS antenna, TD-SCDMA antenna, TD-LTE antenna and FDD-LTE antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102923331A CN103401820A (en) | 2013-07-12 | 2013-07-12 | Mobile communication indoor microdistribution system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102923331A CN103401820A (en) | 2013-07-12 | 2013-07-12 | Mobile communication indoor microdistribution system |
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| CN103401820A true CN103401820A (en) | 2013-11-20 |
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| CN2013102923331A Pending CN103401820A (en) | 2013-07-12 | 2013-07-12 | Mobile communication indoor microdistribution system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287186A (en) * | 2007-04-09 | 2008-10-15 | 上海摩飞电子科技有限公司 | Hand-hold multimedia mobile communication equipment |
| EP2575310A1 (en) * | 2011-02-25 | 2013-04-03 | Huawei Technologies Co., Ltd. | Method and device for digital baseband predistortion |
| CN202998487U (en) * | 2012-12-24 | 2013-06-12 | 四川省韬光通信有限公司 | WCDMA indoor micro-distribution system |
-
2013
- 2013-07-12 CN CN2013102923331A patent/CN103401820A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101287186A (en) * | 2007-04-09 | 2008-10-15 | 上海摩飞电子科技有限公司 | Hand-hold multimedia mobile communication equipment |
| EP2575310A1 (en) * | 2011-02-25 | 2013-04-03 | Huawei Technologies Co., Ltd. | Method and device for digital baseband predistortion |
| CN202998487U (en) * | 2012-12-24 | 2013-06-12 | 四川省韬光通信有限公司 | WCDMA indoor micro-distribution system |
Non-Patent Citations (1)
| Title |
|---|
| 李学易，郝禄国等: "《同频数字直放站回波干扰消除器的设计》", 《电视技术》, 13 October 2010 (2010-10-13), pages 16 - 19 * |
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