CN202172493U - Digital microwave remote covering system - Google Patents
Digital microwave remote covering system Download PDFInfo
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- CN202172493U CN202172493U CN2011202322340U CN201120232234U CN202172493U CN 202172493 U CN202172493 U CN 202172493U CN 2011202322340 U CN2011202322340 U CN 2011202322340U CN 201120232234 U CN201120232234 U CN 201120232234U CN 202172493 U CN202172493 U CN 202172493U
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Abstract
The utility model provides a digital microwave remote covering system, comprising a digital microwave access unit and a digital microwave cover unit, wherein the digital microwave access unit is used for receiving radio frequency signals of a base station, conducting digitalization processing and modulating the signals into microwave frequency ranges and sending out, and for receiving microwave signals, conducting microwave demodulation, digitalization processing and radio frequency signal recovery and then sending the signals to the base station, and the digital microwave cover unit is used for receiving microwave signals, conducting microwave demodulation, digitalization processing and radio frequency signal recovery and covering a mobile terminal, and for receiving radio frequency signals of the mobile terminal, conducting digitalization processing, modulating the signals into microwave frequency ranges and then sending out. By adopting digitalization processing, the system is reproducible and strong in anti-interference capability, with no noise superposition. Because the system demodulates signals of the base station but not decodes the signals, the system substantially reduces transmission bandwidth and transmission time delay, substantially reduces complexity and cost of the system, and has a good market application prospect.
Description
Technical field
The utility model relates to mobile communication and zooms out covering system, is specifically related to a kind of digital microwave and zooms out covering system.
Background technology
At present, the digital microwave radio frequency zooms out covering system and mainly contains following two kinds:
First kind for the digital microwave of shift frequency class zooms out covering system, like application number is to disclose a kind of microwave zooming wireless shrouding system in 200910037387.7 the application documents, and as shown in Figure 1, this system comprises:
Be used to receive the radiofrequency signal of base station and convert microwave signal to and send, and receive the microwave signal that transmits the microwave transmission unit and convert radiofrequency signal to again to the inserting of microwave unit of base station transmits through the microwave transmission unit;
Be used to carry out the microwave transmission unit of microwave signal space transmission;
Be used to receive the microwave signal that transmits the microwave transmission unit and convert emission of radio frequency signals to and go out and carry out the zone and cover, and the radiofrequency signal that transmits of receiving mobile and convert the micro-wave extension unit that microwave signal sends through the microwave transmission unit to.
But above-mentioned digital microwave shift frequency class far-drawing system, owing to adopted the simulation frequency shift technique, the noise stack is serious, poor anti jamming capability, and affected by environment bigger, seldom use in the market.
Second kind for the digital microwave of digitlization class zooms out covering system, and as shown in Figure 2, this digital microwave zooms out covering system; Comprise DAU (Digital Access Unit; The numeral access unit), DRU (Digital Remote Unit, digital long-drawn unit) and cover antenna, also comprise near-end microwave transmission unit and remote microwave transmission unit; Said near-end microwave transmission unit and remote microwave transmission unit include IDU (InDoor Unit; Indoor unit), ODU (OutDoor Unit, outdoor unit) and antenna, the IDU of said near-end microwave transmission unit is connected with ODU, antenna successively; The antenna of said remote microwave transmission unit is connected with ODU, IDU successively, and the antenna of near-end microwave transmission unit and the antenna of remote microwave transmission unit adopt microwave to communicate; The IDU of said near-end microwave transmission unit adopts the standard base-station interface to be connected with DAU, and the IDU of said remote microwave transmission unit adopts the standard base-station interface to be connected with DRU; The IDU of said near-end microwave transmission unit and remote microwave transmission unit includes:
Modular converter; Be used for separating and shine upon digital radio signal and network management data from standard base-station interface frame; Digital radio signal is compressed, then the digital radio signal after network management data and the compression is mapped to microwave frame, and from separate the digital radio signal after shining upon network management data and compressing through the microwave frame after the digital demodulation; Digital radio signal after this compression is carried out decompress(ion), then the digital radio signal behind network management data and the decompress(ion) is mapped to standard base-station interface frame;
Digital modems is used for microwave frame is carried out digital modulation or demodulation.
Second kind of above-mentioned digital microwave far-drawing system; The mode that adopts Direct Digital to sample obtains digital signal and transmits through digital microwave systems; But the data rate owing to Direct Sampling in this system is very high; Therefore cause the processing delay of system and practical bandwidth all very big, system is also unusual complicated and expensive, needs DAU+IDU * 2+ODU * 2+DRU can form one and covers transmission system.
The utility model content
The utility model provides a kind of digital microwave to zoom out covering system, with antijamming capability and the complexity, cost, bandwidth and the time delay that reduce system of enhanced system.
The digital microwave of the utility model zooms out covering system, comprising:
The radiofrequency signal that receives the base station is gone forward side by side and is modulated to microwave frequency band after digitized is handled and sends, and receives microwave signal and carry out microwave demodulation, digitized processing and radiofrequency signal and recover the digital microwave access unit that send to the base station back;
Receive microwave signal and also carry out microwave demodulation, digitized processing and radiofrequency signal and recover the back and cover, and the radiofrequency signal of mobile terminal receive is gone forward side by side and is modulated to the digital microwave capping unit that microwave frequency band sends after digitized is handled to portable terminal.
Can find out from above scheme; The utility model is that radiofrequency signal is carried out forming digital code stream behind the digital demodulation, adopts digital microwave as transmission medium digital code stream to be transmitted to realize what covering was zoomed out then, and the benefit of bringing thus has two: first; Owing to adopted digitized processing; Have recyclability, so the noiseless stack, antijamming capability is strong; Second; The decode operation not because the utility model carries out demodulation to signal of base station; The advantage that has not only kept digitlization transmission and overlay device; And greatly reduce transmission bandwidth and propagation delay time, and also greatly reduce the complexity and the cost of system simultaneously, have better market prospect.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is briefly introduced in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skill in the art; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 zooms out the structural representation of covering system for the digital microwave of shift frequency class in the prior art;
Fig. 2 zooms out the structural representation of covering system for the digital microwave of digitlization class in the prior art;
Fig. 3 zooms out the structural representation of covering system for the utility model digital microwave;
Fig. 4 zooms out the structural representation one of covering system for the digital microwave in the specific embodiment;
Fig. 5 zooms out the structural representation two of covering system for the digital microwave in the specific embodiment.
Embodiment
The utility model provides a kind of digital microwave to zoom out covering system, and this system can solve that micro-wave extension covering system antijamming capability of the prior art is weak, complexity and cost height and the transmission bandwidth and the big problem of propagation delay time of system.
As shown in Figure 3, the digital microwave radio frequency of the utility model zooms out covering system, comprising:
Radio frequency (RF) signal that receives the base station is gone forward side by side and is modulated to microwave frequency band after digitized is handled and sends; And the DWAU (Digital Microwave Access Unit, digital microwave access unit) that receives microwave signal and carry out sending to the base station after microwave demodulation, digitized processing and radiofrequency signal are recovered;
The microwave signal that reception DWAU sends over and carry out microwave demodulation, digitized processing and radiofrequency signal are recovered the back and are covered to portable terminal through cover antenna; And the radiofrequency signal of mobile terminal receive is gone forward side by side and is modulated to the DWRU (Digital Microwave Remote Unit, digital microwave capping unit) that microwave frequency band (to DWAU) sends after digitized is handled.
As an embodiment preferably; As shown in Figure 4, can comprise tape handling of near-end microwave-based and modem module IDU (can be referred to as indoor unit again), near-end microwave radio processing unit ODU (also can be referred to as outdoor unit) in the said digital microwave access unit; Wherein, cover antenna, the tape handling of near-end microwave-based and modem module IDU, near-end microwave radio processing unit ODU and microwave antenna are connected successively.
In addition, from Fig. 4, also can know and also can comprise remote microwave Base-Band Processing and modem module IDU, remote microwave RF processing unit ODU in the said digital microwave capping unit; Wherein, microwave antenna, remote microwave RF processing unit ODU, remote microwave Base-Band Processing are connected with modem module IDU and cover antenna successively.
Need to prove, adopt microwave to communicate between the microwave antenna of the microwave antenna of digital microwave access unit and digital microwave capping unit.And the frequency of the microwave signal of transmitting between above-mentioned DWAR and the DWRU can be 7GHz, 8GHz, 11GHz, 13GHz, 15GHz, 18GHz or 23GHz.
Further, the near-end microwave-based tape handling of the digital microwave access unit of the utility model and modem module IDU can comprise near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module; Wherein, said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module and near-end microwave ifd module are connected successively, and concrete connection is as shown in Figure 5.
In addition, also can comprise far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module among said remote microwave Base-Band Processing and the modem module IDU; Wherein, said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module and remote microwave ifd module are connected successively.
Preferably; Tape handling of said near-end microwave-based and modem module IDU also comprise the near-end monitoring module, and said near-end monitoring module is connected with said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module and near-end microwave radio processing unit ODU respectively;
Said remote microwave Base-Band Processing and modem module IDU also comprise the remote monitoring module, and said remote monitoring module is connected with said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module and remote microwave RF processing unit ODU respectively.
Preferably; Tape handling of said near-end microwave-based and modem module IDU also comprise the near-end power module, and said near-end power module is connected with said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module and near-end microwave radio processing unit ODU respectively;
Said remote microwave Base-Band Processing and modem module IDU also comprise the far end supply module, and said far end supply module is connected with said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module and remote microwave RF processing unit ODU respectively.
The digital microwave of the utility model zooms out covering system can be applicable to multiple systems such as gsm system, cdma system, WCDMA system, CDMA2000 system or TD-SCDMA system, below only with the concrete course of work that example is described the utility model in detail that is applied as on gsm system:
The downstream signal overwrite procedure of native system is following:
The near-end radio-frequency module of A, DWAU receives the simulation GSM radiofrequency signal that is coupled out from BTS, and sends to near-end modulation module after converting digital radio signal into;
The near-end modulation module of B, DWAU is carried out demodulation (but not decoding) to digital radio signal, is converted into the digital signal of low speed (near GSM base band speed), sends to near-end digital microwave modulation module;
Encoding digital signals and the modulation of near-end digital microwave modulation module of C, DWAU to receiving, and the intermediate-freuqncy signal after will modulating sends to near-end microwave ifd module;
The near-end microwave ifd module of D, DWAU carries out after the operations such as filtering signal being sent to near-end microwave radio processing unit (ODU) after receiving the intermediate-freuqncy signal after the modulation;
The near-end ODU of E, DWAU is translated into microwave signal after receiving the intermediate-freuqncy signal that near-end microwave ifd module sends, and sends to the remote microwave RF processing unit (ODU) of DWRU through microwave antenna;
After the far-end ODU of F, DWRU receives microwave signal through microwave antenna, be converted into intermediate-freuqncy signal and send to the remote microwave ifd module;
The remote microwave ifd module of G, DWRU sends signal to remote digital microwave modulating demodulation module after the intermediate-freuqncy signal that receives such as is filtered at operation;
The remote digital microwave modulating demodulation module of H, DWRU is decoded and demodulation to the received signal, then the digital signal after the demodulation is sent to the far-end modulation module of DWRU;
The digital signal of the far-end modulation module of I, DWRU after with the demodulation that receives is modulated into the GSM radiofrequency signal and sends to far-end RF module;
The far-end RF module of J, DWRU sends to the portable terminal in the zone with the radiofrequency signal that receives through cover antenna.
The uplink signal transmissions process of native system is following:
Convert digital radio signal into and deliver to far-end modulation module behind the GSM analog radio-frequency signal of the far-end RF module of a, DWRU through portable terminal in the cover antenna receiving area;
The far-end modulation module of b, DWRU is carried out demodulation (but not decoding) to the digital radio signal that receives, and is converted into the digital signal of low speed (near GSM base band speed), sends to remote digital microwave modulating demodulation module;
Encoding digital signals and the modulation of the remote digital microwave modulating demodulation module of c, DWRU to receiving, and the intermediate-freuqncy signal after will modulating sends to the remote microwave ifd module;
The remote microwave ifd module of d, DWRU carries out the intermediate-freuqncy signal that receives after the operations such as filtering signal to be sent to remote microwave RF processing unit (ODU);
The far-end ODU of e, DWRU is converted into the intermediate-freuqncy signal that receives after the microwave signal near-end microwave radio processing unit (ODU) that sends it to DWAU through microwave antenna;
The near-end ODU of f, DWAU is translated into intermediate-freuqncy signal after receiving radiofrequency signal through microwave antenna, sends to near-end microwave ifd module;
The near-end microwave ifd module of g, DWAU carries out the intermediate-freuqncy signal that receives after the operations such as filtering signal to be sent to near-end digital microwave modulation module;
The near-end digital microwave modulation module of h, DWAU is decoded and demodulation to the intermediate-freuqncy signal that receives, and then the digital signal after the demodulation is sent to near-end modulation module;
The near-end modulation module of i, DWAU is modulated into the digital signal that receives the GSM radiofrequency signal and sends to the near-end radio-frequency module;
The near-end radio-frequency module of j, DWAU sends to the GSM base station with the radiofrequency signal that receives through cover antenna.
In the utility model; Be radiofrequency signal is carried out digital demodulation but not form digital code stream behind the decode operation; Adopt digital microwave digital code stream to be transmitted to realize zooming out covering then as transmission medium; This way has not only kept digitlization transmission and the strong advantage of overlay device antijamming capability, and greatly reduces transmission bandwidth and propagation delay time, also greatly reduces the complexity and the cost of system simultaneously.Below the utility model and prior art are compared advantage and the beneficial effect that further to define the utility model:
One, the utility model is through to a radiofrequency signal demodulation but non-process of decoding; Be example only with the GSM radiofrequency signal; Can the transmission capacity of digital microwave be reduced to second kind of digital microwave and zoom out 1/30 of covering system, this greatly reduces complexity and the cost and the time delay of digital microwave transmission system;
Two, the utility model compared with prior art requires lowlyer to the transmission capacity of digital microwave, therefore can adopt the Digital Microwave modulation demodulation system of lower-order, and this will promote the reliability, transmission range etc. of digital microwave systems greatly;
Three, the utility model adopts digitized processing, has reduced the inner algorithm for design in each unit, thereby has simplified the complexity of system; Just solved problems such as transmitting covering through two processing units; Make the cost of whole system reduce, and install simple, easy to maintenance.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.The modification of being done within any spirit and principle at the utility model, be equal to replacement and improvement etc., all should be included within the claim protection range of the utility model.
Claims (7)
1. a digital microwave zooms out covering system, it is characterized in that, comprising:
The radiofrequency signal that receives the base station is gone forward side by side and is modulated to microwave frequency band after digitized is handled and sends, and receives microwave signal and carry out microwave demodulation, digitized processing and radiofrequency signal and recover the digital microwave access unit that send to the base station back;
Receive microwave signal and also carry out microwave demodulation, digitized processing and radiofrequency signal and recover the back and cover, and the radiofrequency signal of mobile terminal receive is gone forward side by side and is modulated to the digital microwave capping unit that microwave frequency band sends after digitized is handled to portable terminal.
2. digital microwave as claimed in claim 1 zooms out covering system, it is characterized in that:
Said digital microwave access unit comprises the tape handling of near-end microwave-based and modem module IDU, near-end microwave radio processing unit ODU; Wherein, cover antenna, the tape handling of near-end microwave-based and modem module IDU, near-end microwave radio processing unit ODU and microwave antenna are connected successively;
Comprise remote microwave Base-Band Processing and modem module IDU, remote microwave RF processing unit ODU in the said digital microwave capping unit; Wherein, microwave antenna, remote microwave RF processing unit ODU, remote microwave Base-Band Processing are connected with modem module IDU and cover antenna successively.
3. digital microwave as claimed in claim 2 zooms out covering system, it is characterized in that:
Comprise near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module among tape handling of said near-end microwave-based and the modem module IDU; Wherein, said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module and near-end microwave ifd module are connected successively;
Comprise far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module among said remote microwave Base-Band Processing and the modem module IDU; Wherein, said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module and remote microwave ifd module are connected successively.
4. digital microwave as claimed in claim 3 zooms out covering system, it is characterized in that:
Tape handling of said near-end microwave-based and modem module IDU also comprise the near-end monitoring module, and said near-end monitoring module is connected with said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module and near-end microwave radio processing unit ODU respectively;
Said remote microwave Base-Band Processing and modem module IDU also comprise the remote monitoring module, and said remote monitoring module is connected with said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module and remote microwave RF processing unit ODU respectively.
5. digital microwave as claimed in claim 3 zooms out covering system, it is characterized in that:
Tape handling of said near-end microwave-based and modem module IDU also comprise the near-end power module, and said near-end power module is connected with said near-end radio-frequency module, near-end modulation module, near-end Digital Microwave modulation module, near-end microwave ifd module and near-end microwave radio processing unit ODU respectively;
Said remote microwave Base-Band Processing and modem module IDU also comprise the far end supply module, and said far end supply module is connected with said far-end RF module, far-end modulation module, remote microwave digital modulation and demodulation module, remote microwave ifd module and remote microwave RF processing unit ODU respectively.
6. digital microwave as claimed in claim 1 zooms out covering system; It is characterized in that the frequency of the microwave signal of transmitting between said digital microwave access unit and the digital microwave capping unit is 7GHz, 8GHz, 11GHz, 13GHz, 15GHz, 18GHz or 23GHz.
7. zoom out covering system like any described digital microwave of claim 1-6, it is characterized in that, be applicable to gsm system, cdma system, WCDMA system, CDMA2000 system or TD-SCDMA system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202322340U CN202172493U (en) | 2011-07-04 | 2011-07-04 | Digital microwave remote covering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202322340U CN202172493U (en) | 2011-07-04 | 2011-07-04 | Digital microwave remote covering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172493U true CN202172493U (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202322340U Expired - Lifetime CN202172493U (en) | 2011-07-04 | 2011-07-04 | Digital microwave remote covering system |
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| CN (1) | CN202172493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301020A (en) * | 2014-10-22 | 2015-01-21 | 成都锐新科技有限公司 | Microwave self-adaptation communication device |
-
2011
- 2011-07-04 CN CN2011202322340U patent/CN202172493U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301020A (en) * | 2014-10-22 | 2015-01-21 | 成都锐新科技有限公司 | Microwave self-adaptation communication device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |