CN1832358A - Multiple-in-one network transmission method of mobile communication indoor distribution system - Google Patents
Multiple-in-one network transmission method of mobile communication indoor distribution system Download PDFInfo
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- CN1832358A CN1832358A CNA2005101227386A CN200510122738A CN1832358A CN 1832358 A CN1832358 A CN 1832358A CN A2005101227386 A CNA2005101227386 A CN A2005101227386A CN 200510122738 A CN200510122738 A CN 200510122738A CN 1832358 A CN1832358 A CN 1832358A
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Abstract
This invention provides a transmission method for a multi-network in one mobile communication indoor distribution system, in which, the signal source end integrates signals of various communication systems and outputs by a multi-frequency integrator to transmit them in a RF cable after dropping the frequency, the far end cable receives said IF signals and rises them into high frequency by a microwave converter then outputs them to the antenna, or the antenna receives the signals and feeds back them to the signal source end after conversion.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of multiple-in-one network transmission method of mobile communication indoor distribution system.
Background technology
Present mobile communication system comprises GSM, CDMA, TD-SCDMA, SCDMA, Wimax, WCDMA, its indoor distributed system such as PHS is separately independently, signal transmission between the system can not be compatible, the signal that will carry out different system so simultaneously covers, because can not common antenna and cable between the system, need repeat wiring, therefore need on building, repeatedly hole, thereby destruction fabric structure, to realize that such as lift car a plurality of system signals cover then relatively because of difficulty for some spaces are narrow and small, simultaneously because the frequency height, cable attenuation is big, through-put power is big, when transmission, can produce signal and disturb, reduce communication quality.In addition, since a plurality of systems that distributing, first networking cost height, and the transmission energy consumption is big, causes the increase of network operation cost.On March 17th, 2004, disclosed patent documentation CN1482820A disclosed a kind of WCDMA and the same transmission method that keeps pouring in of gsm system, by the GSM signal being carried out sequence spread spectrum at transmitting terminal, the GSM signal is expanded to 900MHz and 2GHz from the 900MHz frequency range, make the multi-access mode of GSM be converted to the mixing multi-access mode by time division multiple access, again with the CDMA signal in same band transmit, at the GSM receiving terminal corresponding signal is carried out despreading then, become the mixing multi-address signal and be the time division multiple access signal, thereby recover the primary signal of gsm system, this technical scheme just provides a solution to two particular communication systems, does not relate to common network and compatibling problem between a plurality of systems.
Summary of the invention
The purpose of this invention is to provide the multiple-in-one network transmission method of mobile communication indoor distribution system that a kind of networking and operation cost are low, transmission is stable.
Technical scheme of the present invention is such: a kind of multiple-in-one network transmission method of mobile communication indoor distribution system, comprise that the signal emission receives two parts with signal, and described signal emission part comprises the steps:
A, the signal of each communication system imported each input of multiplefrequency mixer respectively;
B, the signal of above-mentioned multiplefrequency mixer output is reduced to intermediate-freuqncy signal by frequency converter;
C, above-mentioned intermediate-freuqncy signal is outputed to first radio frequency cable transmit;
D, the intermediate-freuqncy signal that above-mentioned cable transmission far-end is received are upgraded to high-frequency signal by frequency converter;
E, the high-frequency signal behind the raising frequency is exported to antenna carry out the network coverage;
Described signal receive section comprises the steps:
F, each communication system signal that antenna is received amplify;
G, the signal after the above-mentioned amplification is reduced to intermediate-freuqncy signal by frequency converter;
H, above-mentioned intermediate-freuqncy signal is outputed to second radio frequency cable transmit;
I, the intermediate-freuqncy signal that above-mentioned cable transmission near-end is received are upgraded to high-frequency signal by frequency converter;
J, above-mentioned high-frequency signal is exported to each communication system through multiplefrequency mixer;
Above-mentioned multiple-in-one network transmission method of mobile communication indoor distribution system, the signal of each communication system is one or more among GSM, CDMA, TD-SCDMA, SCDMA, Wimax, WCDMA, PHS, PCS, the DCS among the described step a.
Above-mentioned multiple-in-one network transmission method of mobile communication indoor distribution system, the frequency of signal is between 800MHz～3.7GHz among described step a or the step f.
Above-mentioned each multiple-in-one network transmission method of mobile communication indoor distribution system, its frequency of the intermediate-freuqncy signal in described step b or the step g is between 70MHz～700MHz.
Above-mentioned multiple-in-one network transmission method of mobile communication indoor distribution system, the frequency of described intermediate-freuqncy signal is between 70MHz～450MHz.
Above-mentioned multiple-in-one network transmission method of mobile communication indoor distribution system, the intermediate-freuqncy signal in described step b or the step g after the frequency reducing also amplify through signal amplifier.
Above-mentioned multiple-in-one network transmission method of mobile communication indoor distribution system, the high-frequency signal in described steps d or the step I behind the raising frequency also amplify through signal amplifier.
The present invention is transmitted by the reception of the signal of various mobile communication system is focused in two radio frequency cables by multiplefrequency mixer with transmission, simultaneously in transmission course, each signal is carried out down conversion process, sending or receiving terminal restores and is high-frequency signal, like this aspect networking, can adopt same reception and the transmission of radio frequency cable being carried out signal between the different communication systems, needn't repeat networking, can reduce the networking expense greatly, and then avoid destruction to building, simultaneously, because decay was little when intermediate-freuqncy signal was transmitted in radio frequency cable, needn't adopt high-power emission source during emission or add trunk amplifier, thereby reduce the network operation cost, the further meaning of the present invention is, can be utilized by the present invention for existing domestic aerial, needn't reset antenna, for new building, then can cover with the disposable realization internal home network of single antenna.
Description of drawings
Fig. 1 embodiment of the invention indoor distributed system signal flow graph;
Embodiment
With reference to figure 1, embodiment discloses a kind of transmission method of mobile communication indoor distribution system, and this method comprises that the signal emission receives two parts with signal, and described signal emission part comprises the steps:
A, Wimax, WCDMA, three kinds of communication system down link signals of PHS are inputed to each inputs of 3 frequency combiners respectively; Wherein Wimax CF signal frequency is 3.5GHz, and WCDMA CF signal frequency is 2.1GHz, and PHS is 1.9GHz;
B, the signal of above-mentioned 3 frequency combiners output is reduced to the intermediate-freuqncy signal of 190MHz to 350MHz by microwave converter, again this intermediate-freuqncy signal is amplified;
C, above-mentioned intermediate-freuqncy signal is outputed to radio frequency cable transmit;
D, transfer to the aforementioned intermediate-freuqncy signal that far-end receives through radio frequency cable and be upgraded to high-frequency signal by microwave converter above-mentioned, again this high-frequency signal is respectively amplified, it is 3.5GHz that the result obtains Wimax CF signal frequency, WCDMA CF signal frequency is 2.1GHz, and the GSM CF signal is 900MHz;
E, the high-frequency signal behind the above-mentioned raising frequency is exported to antenna carry out the network coverage;
Described signal receive section is opposite with above-mentioned signal emission part, and it comprises the steps:
F, each communication system signal that antenna is received amplify;
G, the signal after the above-mentioned amplification is reduced to intermediate-freuqncy signal by microwave converter;
H, above-mentioned intermediate-freuqncy signal is outputed to radio frequency cable transmit after amplifying;
I, transfer to the intermediate-freuqncy signal that near-end receives through radio frequency cable and be upgraded to high-frequency signal by microwave converter above-mentioned;
J, export each communication system to through 3 frequency combiners after above-mentioned high-frequency signal amplified;
In the above-described embodiments, described 3 frequency combiners can be the disclosed schemes of disclosed Chinese patent CN2618308 on May 26th, 2004, and described communication system can be one or more among GSM, CDMA, TD-SCDMA, SCDMA, Wimax, WCDMA, PHS, PCS, the DCS.Because the frequency range of each institute of system letter lid is different, therefore this transmission method letter has covered the whole adjustable range of 800MHz～3.7GHz, through the also arbitrary frequency range between 70MHz～700MHz of its frequency after the microwave converter down conversion process, for operation cost is further reduced, its frequency of the preferred intermediate-freuqncy signal of the utility model is between 70MHz～450MHz.And the emission of above-mentioned signal and the reception of signal are adopted two cables to transmit respectively and are prevented interference between signals, guarantee communication quality.Described microwave converter comprises several like this functional modules, and high-frequency signal is input to frequency mixer, and frequency mixer is connected with the VCO oscillator, through exporting intermediate-freuqncy signal after the frequency mixer frequency reducing, carries out exporting after the Filtering Processing through filter more again; Conversely, intermediate-freuqncy signal is input to frequency mixer and is reduced to high-frequency signal after amplifying, and carries out Filtering Processing through filter then, exports high-frequency signal at last.
The thinking that the present invention deals with problems is: after each high-frequency signal of mobile communication is carried out sum of fundamental frequencies through multiplefrequency mixer, reduce to intermediate frequency by frequency converter again, delivering to radio frequency cable again through power match then transmits, on the one hand because intermediate-freuqncy signal decays little in transmission course, the power of emission source can reduce like this, thereby can cut operating costs, optimize network quality; On the other hand, because the reception of signal only needs 2 radio frequency cables to transmit with emission, do not need to carry out on a large scale networking, thereby reduce the networking cost.In addition, in the foregoing description, the frequency of described intermediate-freuqncy signal is adjustable between 70MHz to 700MHz, promptly obtains the frequency range that hope obtains by adjusting described microwave converter.
Claims (7)
1, a kind of multiple-in-one network transmission method of mobile communication indoor distribution system comprises that the signal emission receives two parts with signal, is characterized in that:
Described signal emission part comprises the steps:
A, the signal of each communication system imported each input of multiplefrequency mixer respectively;
B, the signal of above-mentioned multiplefrequency mixer output is reduced to intermediate-freuqncy signal by frequency converter;
C, above-mentioned intermediate-freuqncy signal is outputed to first radio frequency cable transmit;
D, the intermediate-freuqncy signal that above-mentioned cable transmission far-end is received are upgraded to high-frequency signal by frequency converter;
E, the high-frequency signal behind the raising frequency is exported to antenna carry out the network coverage;
Described signal receive section comprises the steps:
F, each communication system signal that antenna is received amplify;
G, the signal after the above-mentioned amplification is reduced to intermediate-freuqncy signal by frequency converter;
H, above-mentioned intermediate-freuqncy signal is outputed to second radio frequency cable transmit;
I, the intermediate-freuqncy signal that above-mentioned cable transmission near-end is received are upgraded to high-frequency signal by frequency converter;
J, above-mentioned high-frequency signal is exported to each communication system through multiplefrequency mixer.
2, multiple-in-one network transmission method of mobile communication indoor distribution system as claimed in claim 1, the signal that it is characterized in that each communication system among the described step a are one or more among GSM, CDMA, TD-SCDMA, SCDMA, Wimax, WCDMA, PHS, PCS, the DCS.
3, multiple-in-one network transmission method of mobile communication indoor distribution system as claimed in claim 2, the frequency that it is characterized in that signal among described step a or the step f is between 800MHz～3.7GHz.
4,, it is characterized in that its frequency of intermediate-freuqncy signal in described step b or the step g is between 70MHz～700MHz as claim 1 or 2 or 3 described multiple-in-one network transmission method of mobile communication indoor distribution system.
5, multiple-in-one network transmission method of mobile communication indoor distribution system as claimed in claim 4, the frequency that it is characterized in that described intermediate-freuqncy signal is between 70MHz～450MHz.
6, multiple-in-one network transmission method of mobile communication indoor distribution system as claimed in claim 4 is characterized in that the intermediate-freuqncy signal after the frequency reducing is also amplified through signal amplifier in described step b or the step g.
7, multiple-in-one network transmission method of mobile communication indoor distribution system as claimed in claim 4 is characterized in that the high-frequency signal behind the raising frequency also amplifies through signal amplifier in described steps d or the step I.
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| CNA2005101227386A CN1832358A (en) | 2005-11-23 | 2005-11-23 | Multiple-in-one network transmission method of mobile communication indoor distribution system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335934B (en) * | 2008-07-31 | 2011-07-27 | 京信通信系统（中国）有限公司 | Multi-system access platform and multiple frequency band demultiplexer and multiplexer composite device |
| CN102547771A (en) * | 2010-12-13 | 2012-07-04 | 中国移动通信集团北京有限公司 | Multichannel indoor distribution system and signal transmission method thereof |
| CN103675753A (en) * | 2013-11-27 | 2014-03-26 | 北京邮电大学 | Signal processing method and system for indoor positioning |
| CN111600107A (en) * | 2020-05-28 | 2020-08-28 | 苏州优亚信电子科技有限公司 | Band-stop coupler, indoor distribution system and signal processing method |
| CN111614379A (en) * | 2020-05-15 | 2020-09-01 | 上海大学 | Active antenna distribution system based on coaxial cable network |
-
2005
- 2005-11-23 CN CNA2005101227386A patent/CN1832358A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335934B (en) * | 2008-07-31 | 2011-07-27 | 京信通信系统（中国）有限公司 | Multi-system access platform and multiple frequency band demultiplexer and multiplexer composite device |
| CN102547771A (en) * | 2010-12-13 | 2012-07-04 | 中国移动通信集团北京有限公司 | Multichannel indoor distribution system and signal transmission method thereof |
| CN102547771B (en) * | 2010-12-13 | 2014-09-10 | 中国移动通信集团北京有限公司 | Multichannel indoor distribution system and signal transmission method thereof |
| CN103675753A (en) * | 2013-11-27 | 2014-03-26 | 北京邮电大学 | Signal processing method and system for indoor positioning |
| CN111614379A (en) * | 2020-05-15 | 2020-09-01 | 上海大学 | Active antenna distribution system based on coaxial cable network |
| CN111600107A (en) * | 2020-05-28 | 2020-08-28 | 苏州优亚信电子科技有限公司 | Band-stop coupler, indoor distribution system and signal processing method |
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