CN101483485B - Working method for common-frequency time division translating optical fiber straight-forward station - Google Patents
Working method for common-frequency time division translating optical fiber straight-forward station Download PDFInfo
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- CN101483485B CN101483485B CN2009100582891A CN200910058289A CN101483485B CN 101483485 B CN101483485 B CN 101483485B CN 2009100582891 A CN2009100582891 A CN 2009100582891A CN 200910058289 A CN200910058289 A CN 200910058289A CN 101483485 B CN101483485 B CN 101483485B
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Abstract
The present invention provides an operating method of same-frequency time-division differential rotating optical fiber repeater which is composed of a transmission control processor, a time division duplex device and a delayer. The invention is characterized in that the adjacent optical fiber repeaters together enter the receiving time slot or transmitting time slot under the control of receiving-transmitting synchronization command. The invention causes that the optical repeater system can stably provide same-frequency relay transmission service for wireless communication subscriber. Furthermore the operating method of the invention has the characteristics of higher covering index, little interference and suitability for various covering environments.
Description
Technical field
The present invention is a radio communication relay transmission technology, is applicable to the radio communication relay transmission of conventional wireless communication system, belongs to wireless communication technology field.
Background technology
Using in the optical fiber direct amplification relaying technique at present, when the adjacent optical fiber repeater of needs carries out frequently transmitting together, need avoid feedbacking the influence of self-excitation by rationally being provided with of antenna feeder covering system, do two problems that have like this: the one, it is bigger to adjust difficulty, and the 2nd, self-excitation appears again because the complexity of environment and device parameter and variation occur covering index system low or that adjust easily; But in actual applications, need optical fiber repeater that the stable and high same frequency forward relay service system that covers index is provided.
Summary of the invention
In view of the foregoing, the object of the present invention is to provide a kind of working method for common-frequency time division translating optical fiber straight-forward station, make the optical fiber direct amplification relay system that the stable and high same frequency radio communication relay transmission service that covers index can be provided, and have and disturb little and be applicable to the characteristics of multiple overlay environment condition.
For achieving the above object, the present invention introduces a kind of working method for common-frequency time division translating optical fiber straight-forward station that is made of the transmission processor controls in the optical fiber repeater, time division duplex device, delayer, it is characterized in that adjacent fiber repeater unified entering under the control of transmitting-receiving synchronic command receives or transmission time slot, and under the control of transmission processor controls, adopt following method of work:
1, after common-frequency time division translating optical fiber straight-forward station receives CF signal, the CF signal that this common-frequency time division translating optical fiber straight-forward station is received in receiving slot by delayer is delayed time and is stored, CF signal after will delaying time in transmission time slot by this common-frequency time division translating optical fiber straight-forward station is launched by antenna, and by optical fiber transport channel this CF signal and emission synchronizing signal is converted to light signal sends by fibre circuit under the control of transmission processor controls; Under the coordination of transmitting-receiving synchronic command, common-frequency time division translating optical fiber straight-forward station is in the transmission time slot of the CF signal transmission time slot of our station and adjacent common-frequency time division translating optical fiber straight-forward station, and the radio carrier frequency receiving loop does not receive CF signal;
2, after common-frequency time division translating optical fiber straight-forward station receives the light signal that adjacent common-frequency time division translating optical fiber straight-forward station sends by fibre circuit, be converted into corresponding CF signal and transmitting-receiving synchronic command, and this CF signal carried out compensation of delay, under the coordination of transmitting-receiving synchronic command, in transmission time slot, it is launched then by antenna.
Work operation principle of the present invention is: optical fiber direct amplification stands in the unified down reception or the transmission time slot of entering of control of transmitting-receiving synchronic command; When an optical fiber direct amplification stands in when receiving CF signal in the receiving slot, this CF signal is stored and delay time, and this CF signal and transmitting-receiving synchronic command be converted to light signal and send to other optical fiber repeaters by fibre circuit, at this moment the CF signal of transmitting by optical fiber, it can be CF signal through delay process, it also can be CF signal without delay process, the optical fiber repeater that receives light signal converts light signal to corresponding CF signal and transmitting-receiving synchronic command, and this CF signal carried out compensation of delay, make the delay data that is provided with in the optical fiber repeater of total time-delay and former reception CF signal equate or close, then under the coordination control of transmitting-receiving synchronic command, the optical fiber repeater of former reception CF signal and be unified in the CF signal that sends former storage and delayed time in the sending time slots by the optical fiber repeater that Optical Fiber Transmission obtains CF signal, and in this sending time slots, the radio carrier frequency receiving loop of optical fiber repeater does not receive this CF signal; Like this, just realized the same frequency of CF signal is transmitted transmission, both guaranteed the covering signal strength signal intensity, also avoided the transmitting-receiving self-excitation between the optical fiber repeater to feedback, guaranteed the stability of relay transmission.
Description of drawings
Fig. 1 is the grid pie graph of one embodiment of the invention.
Fig. 2 is groundwork flow process of common-frequency time division translating optical fiber straight-forward station of one embodiment of the invention and the groundwork flow chart when receiving CF signal.
Fig. 3 is the groundwork flow chart of the common-frequency time division translating optical fiber straight-forward station of one embodiment of the invention when receiving light signal.
Embodiment
Below be example explanation embodiments of the invention with the accompanying drawing.
Fig. 1 expresses an example and uses grid pie graph of the present invention, wherein:
(1), (2) are common-frequency time division translating optical fiber straight-forward station; (3) be fibre circuit.
By shown in the accompanying drawing 1 a plurality of common-frequency time division translating optical fiber straight-forward stations being separately positioned on the area that needs relaying to cover, and adopt fibre circuit to link to each other, promptly finished system of the present invention and constituted.
Fig. 2 is groundwork flow process of common-frequency time division translating optical fiber straight-forward station of one embodiment of the invention and the groundwork flow chart when receiving CF signal, wherein:
After common-frequency time division translating optical fiber straight-forward station receives CF signal, the CF signal that this common-frequency time division translating optical fiber straight-forward station is received in receiving slot by delayer is delayed time and is stored, CF signal after will delaying time in transmission time slot by this common-frequency time division translating optical fiber straight-forward station is launched by antenna, and the CF signal after will delaying time by optical fiber transport channel under the control of transmission processor controls and launch synchronizing signal and be converted to light signal and send by fibre circuit; Under the coordination of transmitting-receiving synchronic command, common-frequency time division translating optical fiber straight-forward station is in the transmission time slot of the CF signal transmission time slot of our station and adjacent common-frequency time division translating optical fiber straight-forward station, and the carrier frequency receiving loop does not receive and do not transmit CF signal in this time slot by fibre circuit to adjacent common-frequency time division translating optical fiber straight-forward station;
Groundwork flow chart when Fig. 3 is the common-frequency time division translating optical fiber straight-forward station receiving optical signals of one embodiment of the invention, wherein:
After common-frequency time division translating optical fiber straight-forward station receives the light signal that adjacent common-frequency time division translating optical fiber straight-forward station sends by fibre circuit, be converted into corresponding CF signal and transmitting-receiving synchronic command, and according to the transmission line delay parameter this CF signal is carried out compensation of delay this CF signal is carried out compensation of delay, make the delay data that is provided with in the optical fiber repeater of total time-delay and former reception CF signal equate or close, under the coordination of transmitting-receiving synchronic command, in transmission time slot, it is launched then by antenna.
The transmission processor controls of common-frequency time division translating optical fiber straight-forward station programmed according to above-mentioned method of work and the relevant work parameter is set to finish enforcement of the present invention.
In addition, the present invention can also be when the power of the CF signal of transmitting adjacent common-frequency time division translating optical fiber straight-forward station is set, and its transmitting power is adjusted at and makes below the level value that this adjacent common-frequency time division optical fiber repeater can not effectively receive; Do like this and can reduce this common-frequency time division translating optical fiber straight-forward station when receiving CF signal, feedback the self-excitation that causes, improve the stability of system because of the forwarding of the same frequency CF signal of adjacent common-frequency time division translating optical fiber straight-forward station.
In addition, the present invention can also be when the transmitting power of the CF signal of transmitting adjacent common-frequency time division translating optical fiber straight-forward station is set, and adopts the method for the closed loop adjustment of wireless and Optical Fiber Transmission channel to be provided with automatically; That is: when the transmitting power of the CF signal of transmitting adjacent common-frequency time division translating optical fiber straight-forward station is set, start a certain common-frequency time division translating optical fiber straight-forward station transmitting carrier frequency signal, adjacent common-frequency time division translating optical fiber straight-forward station judges that with the CF signal level parameters that receives drawing the power adjustment instructs, and this power adjustment instruction is transferred to the common-frequency time division translating optical fiber straight-forward station of original transmitted CF signal by optical fiber transport channel, the power adjustment instruction that this station basis receives is provided with the transmitting power of CF signal, and the CF signal level parameters that receives until adjacent common-frequency time division translating optical fiber straight-forward station is lower than effective reception value and can launch self-excitation phenomena; Can reach the possibility that reduces the back coupling self-excitation so effectively, quickly.
In addition, the present invention can also be that common-frequency time division translating optical fiber straight-forward station is under the coordination of transmitting-receiving synchronic command, the CF signal that common-frequency time division translating optical fiber straight-forward station is launched in transmission time slot the adjacent common-frequency time division translating optical fiber straight-forward station that receives is not stored time-delay, this CF signal is not carried out the our station CF signal and transmit, this CF signal is not converted to light signal yet and sends to adjacent common-frequency time division translating optical fiber straight-forward station; That is: when adjacent common-frequency time division translating optical fiber straight-forward station carries out the CF signal forwarding in transmission time slot, the forwarding CF signal of adjacent common-frequency time division translating optical fiber straight-forward station is no longer stored time-delay to the common-frequency time division translating optical fiber straight-forward station of primary reception CF signal and CF signal is transmitted, and also no longer is converted into light signal and sends to other adjacent common-frequency time division translating optical fiber straight-forward stations; Can avoid feedbacking self-excitation like this, improve the stability of system.
In addition, that the present invention can also be that common-frequency time division translating optical fiber straight-forward station is received is that other common-frequency time division translating optical fiber straight-forward stations send, during by the light signal of CF signal conversion, do not receive the CF signal of adjacent common-frequency time division translating optical fiber straight-forward station emission, can avoid feedbacking self-excitation like this, improve the stability of system.
In addition, the present invention can also be that common-frequency time division translating optical fiber straight-forward station is provided with gps system, the time and the synchronizing information parameter of the transmitting-receiving synchronic command of common-frequency time division translating optical fiber straight-forward station are provided by gps system, common-frequency time division translating optical fiber straight-forward station can obtain high precision synchronous information easily like this, improves the stability of system.
A kind of common-frequency time division translating optical fiber straight-forward station and method of work proposed by the invention, make the optical fiber repeater system can be stably for wireless communication user provides with relay transmission service frequently, and higher covering index, disturb little and be applicable to the characteristics of multiple overlay environment.
Claims (6)
1. working method for common-frequency time division translating optical fiber straight-forward station that constitutes by the transmission processor controls in the optical fiber repeater, time division duplex device, delayer, it is characterized in that adjacent fiber repeater unified entering under the control of transmitting-receiving synchronic command receives or transmission time slot, and under the control of transmission processor controls, adopt following method of work:
(1) after common-frequency time division translating optical fiber straight-forward station receives CF signal, the CF signal that this common-frequency time division translating optical fiber straight-forward station is received in receiving slot by delayer is delayed time and is stored, CF signal after will delaying time in transmission time slot by this common-frequency time division translating optical fiber straight-forward station is launched by antenna, and by optical fiber transport channel this CF signal and emission synchronizing signal is converted to light signal sends by fibre circuit under the control of transmission processor controls; Under the coordination of transmitting-receiving synchronic command, common-frequency time division translating optical fiber straight-forward station is in the transmission time slot of the CF signal transmission time slot of our station and adjacent common-frequency time division translating optical fiber straight-forward station, and the radio carrier frequency receiving loop does not receive CF signal;
(2) after common-frequency time division translating optical fiber straight-forward station receives the light signal that adjacent common-frequency time division translating optical fiber straight-forward station sends by fibre circuit, be converted into corresponding CF signal and transmitting-receiving synchronic command, and this CF signal carried out compensation of delay, under the coordination of transmitting-receiving synchronic command, in transmission time slot, it is launched then by antenna.
2. common-frequency time division translating optical fiber straight-forward station as claimed in claim 1, it is characterized in that common-frequency time division translating optical fiber straight-forward station when the power of the CF signal of transmitting adjacent common-frequency time division translating optical fiber straight-forward station is set, its transmitting power is adjusted at and makes below the level value that this adjacent common-frequency time division optical fiber repeater can not effectively receive.
3. common-frequency time division translating optical fiber straight-forward station as claimed in claim 2, it is characterized in that common-frequency time division translating optical fiber straight-forward station when the transmitting power of the CF signal of transmitting adjacent common-frequency time division translating optical fiber straight-forward station is set, adopts the method for the closed loop adjustment of wireless and Optical Fiber Transmission channel that the transmitting power of the CF signal of adjacent common-frequency time division translating optical fiber straight-forward station is set automatically.
4. common-frequency time division translating optical fiber straight-forward station as claimed in claim 1, it is characterized in that common-frequency time division translating optical fiber straight-forward station is under the coordination of transmitting-receiving synchronic command, the CF signal that common-frequency time division translating optical fiber straight-forward station is launched in transmission time slot the adjacent common-frequency time division translating optical fiber straight-forward station that receives is not stored time-delay, this CF signal is not carried out the our station CF signal and transmit, this CF signal is not converted to light signal yet and sends to adjacent common-frequency time division translating optical fiber straight-forward station.
5. as claim 1 or 4 described common-frequency time division translating optical fiber straight-forward stations, it is characterized in that common-frequency time division translating optical fiber straight-forward station receive that other common-frequency time division translating optical fiber straight-forward stations send, during by the light signal of CF signal conversion, do not receive the CF signal of adjacent common-frequency time division translating optical fiber straight-forward station emission.
6. as claim 1 or 2 or 3 or 4 described common-frequency time division translating optical fiber straight-forward stations, it is characterized in that common-frequency time division translating optical fiber straight-forward station is provided with gps system, the time and the synchronizing information parameter of the transmitting-receiving synchronic command of common-frequency time division translating optical fiber straight-forward station are provided by gps system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100582891A CN101483485B (en) | 2009-02-06 | 2009-02-06 | Working method for common-frequency time division translating optical fiber straight-forward station |
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| CN2009100582891A CN101483485B (en) | 2009-02-06 | 2009-02-06 | Working method for common-frequency time division translating optical fiber straight-forward station |
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| CN101483485A CN101483485A (en) | 2009-07-15 |
| CN101483485B true CN101483485B (en) | 2011-09-21 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102523027A (en) * | 2011-12-27 | 2012-06-27 | 耿直 | Digital talkback relay transmission method and digital talkback relay equipment |
| CN106253985B (en) * | 2016-08-09 | 2018-09-28 | 嵊州市万智网络科技有限公司 | Common-frequency time division switching fiber optic repeater working method |
| CN106330287B (en) * | 2016-09-05 | 2019-04-26 | 新昌县维利机械有限公司 | The storage forwarding working method and store-and-forward fiber optic repeater of optical fiber repeater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286802A (en) * | 1999-03-30 | 2000-10-13 | Kokusai Electric Co Ltd | Analog optical transmission repeater and analog optical transmission system using the same |
| CN1716825A (en) * | 2005-08-12 | 2006-01-04 | 京信通信技术(广州)有限公司 | Mobile communication digital optical fiber direct distribution station using daisy chain driving structure |
| CN1988412A (en) * | 2006-12-23 | 2007-06-27 | 桂林市思奇通信设备有限公司 | High frequency broad band friquency shift repeator |
| CN101087448A (en) * | 2007-07-16 | 2007-12-12 | 中国移动通信集团广东有限公司 | A system for cell signals coverage in mobile communication |
-
2009
- 2009-02-06 CN CN2009100582891A patent/CN101483485B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000286802A (en) * | 1999-03-30 | 2000-10-13 | Kokusai Electric Co Ltd | Analog optical transmission repeater and analog optical transmission system using the same |
| CN1716825A (en) * | 2005-08-12 | 2006-01-04 | 京信通信技术(广州)有限公司 | Mobile communication digital optical fiber direct distribution station using daisy chain driving structure |
| CN1988412A (en) * | 2006-12-23 | 2007-06-27 | 桂林市思奇通信设备有限公司 | High frequency broad band friquency shift repeator |
| CN101087448A (en) * | 2007-07-16 | 2007-12-12 | 中国移动通信集团广东有限公司 | A system for cell signals coverage in mobile communication |
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