CN201042013Y - Optical fiber link backup repeater - Google Patents
Optical fiber link backup repeater Download PDFInfo
- Publication number
- CN201042013Y CN201042013Y CNU2007200489297U CN200720048929U CN201042013Y CN 201042013 Y CN201042013 Y CN 201042013Y CN U2007200489297 U CNU2007200489297 U CN U2007200489297U CN 200720048929 U CN200720048929 U CN 200720048929U CN 201042013 Y CN201042013 Y CN 201042013Y
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- Prior art keywords
- optical fiber
- fiber link
- link
- repeater
- signal
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Abstract
The utility model discloses a backup repeater station for an optical fiber link. The backup repeater station comprises a downlink consisting of a proximate duplexer, a downlink signal processing module and a remote duplexer; and an uplink consisting of a remote duplexer, an uplink signal processing module and a proximate duplexer. In addition, the downlink and the uplink are respectively provided with an optical fiber link group, and comprises a distributor for distributing signals of the respective link into multiway outputs; a plurality of optical fiber link elements used for delivering the multiway signals output by the distributor; and a synthesizer for synthesizing the multiway signals delivered from each optical fiber elements into one way for feedback to the respective link. In this way, the utility model backups the optical fiber link by adopting a plurality of optical fiber element pairs to form optical fiber link groups, and makes more reliable the signal transmission between the relay end and the cap end of the repeater station; faults of one of the optical fiber link elements cannot lead to paralysis of the system, thereby meeting the high reliability requirement of the repeater station.
Description
Technical field
The utility model relates to Mobile communication direct base station, especially relates to a kind of repeater of optical fiber link backup.
Background technology
In mobile communication system, use the repeater as relaying, the upward signal of the downstream signal of base station or portable terminal is amplified the back transmit, realize extension to base station functions making the covering of mobile communication signal further perfect with the cost lower with respect to the base station.
The repeater generally is made up of base station end (near-end) duplexer, descending amplification module, up amplification module and mobile terminal (far-end) duplexer, wherein, form down link by near-end duplexer, descending amplification module, far-end duplexer successively, form up link by far-end duplexer, up amplification module, near-end duplexer successively.
For extending the practical function scope of repeater, the repeater can be separated into relay and capped end, respectively near base station end and mobile you setting.Relay and capped end include essentially identical parts, mainly are that certain the node place in up link and down link is separated, and keep electrical connection, are separated into relay capped end two parts physically.Like this, the relay can more help bringing into play the effect of repeater more near travelling carriage and cover more near the base station.
Electric connection between relay and the capped end can be accomplished in several ways, comprising Optical Fiber Transmission.In the practice, is light signal by optical transmission module with the electrical signal conversion in up link or the down link, through the optical fiber long-distance transmissions to Optical Receivers, again light signal is converted to the signal of telecommunication by Optical Receivers, again feed-in up link or down link just can be realized the transfer of data of remote high reliability.The signal pathway that is formed by optical transmission module, optical fiber and Optical Receivers is called optical fiber link, and as seen, optical fiber link is guaranteeing to play a part outbalance on the operate as normal of repeater.
Traditional optical fiber repeater generally includes only two optical fiber that are applied to up link and down link, be equipped with corresponding optical transmission module and Optical Receivers, when wherein optical transmission module, optical fiber or Optical Receivers break down, just can cause the repeater complete machine to break down, thereby influence the normal covering of communication system.Therefore, traditional optical fiber repeater causes its reliability lower owing to lack corresponding redundancy technique, breaks down easily, is difficult to be suitable in the higher occasion of reliability requirement.
The utility model content
The purpose of this utility model is to provide a kind of repeater of optical fiber link backup, so that the relay of optical fiber repeater and the transmission of the signal between the capped end are more reliable.
For realizing this purpose, the utility model adopts following technical scheme:
The repeater of the utility model optical fiber link backup comprises down link of being made up of near-end duplexer, downstream signal processing module, far-end duplexer and the up link of being made up of far-end duplexer, upward signal processing module, near-end duplexer;
In addition, be respectively arranged with the optical fiber link group in up link and the down link, described optical fiber link group comprises:
Distributor becomes multichannel output with the signal allocation of affiliated link;
A plurality of optical fiber link unit is used to transmit the multiple signals of distributor output;
Synthesizer, link under synthetic one tunnel feed-in of the multiple signals that each optical fiber link unit is sent.
Typically, each optical fiber link unit comprises:
Optical transmission module, the electrical signal conversion that distributor is exported is a light signal;
Optical fiber transmits described light signal;
Optical Receivers, the light signal that Optical Fiber Transmission is come is converted to the described synthesizer of signal of telecommunication feed-in.
In like manner, described synthesizer can adopt alternative radio-frequency (RF) switch or relay switch.
Perhaps, described synthesizer can comprise a plurality of adjustable attenuators and the power combiner corresponding to optical fiber link unit number, and the Optical Receivers electric connection of every adjustable attenuator and every optical fiber link unit is used for the signal of telecommunication is decayed; Power combiner is used for synthetic one road signal output of the signal of telecommunication of each adjustable attenuator.In like manner, there is the pad value of an adjustable attenuator to be set to minimum in the described synthesizer.Particularly, synchronization can have and only have the pad value of an adjustable attenuator to be set to 0dB in the described synthesizer, and the pad value of other adjustable attenuator is not higher than 40dB.
In addition, the repeater of the utility model optical fiber link backup also adopts the power module group that distribution and backup are carried out in the repeater, this power module group comprises two power modules that are used to the complete machine distribution, two power module parallel connections, in addition, the output of each power module is in series with diode closing Lu Qianjun.
Compared with prior art, the utlity model has following beneficial effect: manyly optical fiber link unit is formed the optical fiber link group optical fiber link is backed up by adopting, make the signal transmission between relay, repeater and the capped end more reliable, when wherein one road optical fiber link unit breaks down, can not cause systemic breakdown, reach the requirement of the high reliability of repeater.
Description of drawings
Fig. 1 is the theory diagram of the repeater of the utility model optical fiber link backup;
Fig. 2 is the theory diagram of a kind of execution mode of optical fiber link group of the present utility model;
Fig. 3 is the theory diagram of the another kind of execution mode of optical fiber link group of the present utility model;
Fig. 4 is the theory diagram of power module group of the present utility model.
Embodiment
See also Fig. 1, among first embodiment of the present utility model, optical fiber repeater comprises near-end (base station end) duplexer 1, far-end (mobile you) duplexer 1 ', between near-end duplexer 1 and far-end duplexer 1 ', comprise up link and down link, it is (not shown generally to include several signal processing modules in each link, down together), in order to finish such as frequency-selecting, down-conversion, up-conversion, the processing of radio-frequency stages such as power amplification, or handle based on other of base band level etc., therefore, the outer culvert of uplink and downlink signal processing module includes but not limited to the frequency-selecting module, down conversion module, the up-conversion module, low noise amplifier, radio-frequency signal processing devices such as power amplifier should be those of ordinary skills and know.
The donor antenna of repeater is after be coupled to downlink radio-frequency signal in the air, be forwarded in the down link through near-end duplexer 1, after the signal processing modules at different levels of flowing through carry out signal processing, be forwarded to cover antenna through far-end duplexer 1 ' again, outwards launch until travelling carriage by cover antenna; Otherwise, after cover antenna receives the upward signal of travelling carriage, transmit up link through far-end duplexer 1 ', after signal processing modules at different levels carry out signal processing, be forwarded to donor antenna through near-end duplexer 1 again, send to the base station by donor antenna and finish up process.
Optical fiber direct amplification stands in that certain node is separated into relay 3 and capped end 3 ' between up link and the down link, carries out the signal transmission by optical fiber between relay 3 and the capped end 3 '.The principle that the utility model backs up optical fiber repeater just is based on that optical fiber link backup between relay 3 and the capped end 3 ' carries out.
Among Fig. 1, be provided with optical fiber link group 2 between relay 3 and the capped end 3 ', 2 ', each optical fiber link group 2,2 ' comprises distributor 21, at least two optical fiber link units, and synthesizer 22, and each optical fiber link unit is by optical transmission module 23,23 ', optical fiber and Optical Receivers 24,24 ' are formed successively.
Down link with optical fiber repeater is an example, at first place the distributor 21 of relay 3 one sides to accept the signal input of down link, and this downstream signal is distributed into multichannel output, each optical fiber link unit accepts one tunnel output of distributor 21, then with its long-distance transmissions to the synthesizer 22 that is arranged on capped end 3 ', in each optical fiber link unit, select an output by synthesizer 22, after perhaps synthesizer 22 synthesizes the signal in each optical fiber link unit, form one tunnel output again, in the feed-in down link, realize the transfer of data between relay 3 and the capped end 3 '.
In each optical fiber link unit, at first by the optical transmission module 23 that places relay 3,23 ' the descending electrical signal conversion with distributor 21 feed-ins is a light signal, transmit through optical fiber then, by the Optical Receivers 24 that places capped end 3 ', 24 ' is reduced to the signal of telecommunication with the light signal that receives, feed-in synthesizer 22 again.
About the signal path in the up link, and the setting of corresponding optical fiber link group 2 ', with the described content contrary of above-mentioned down link, so not all right giving unnecessary details.
As shown in Figure 2, in the optical fiber link group 2,2 ' that only comprises two-way optical fiber link unit, described synthesizer 22 can adopt alternative radio-frequency (RF) switch or relay switch, realizes the output of selecting of signal.So, same optical fiber link group 2,2 ' only has the signal of one road optical fiber link unit to be fed in the affiliated link, when wherein this road optical fiber link unit breaks down, can be by the switching of radio-frequency (RF) switch or relay switch, the operating state of two optical fiber links of exchange makes the work of optical fiber repeater recover normal.
Again as shown in Figure 3, the type selecting of relevant synthesizer 22 adopts another execution mode.Among Fig. 3, described synthesizer 22 comprises adjustable attenuator 221,221 ' and power combiner 223, adjustable attenuator 221, the number setting of the corresponding optical fiber link of 221 ' number unit, each adjustable attenuator 221, the Optical Receivers 24 of a 221 ' corresponding optical fiber link unit, 24 ' electrically connects, and each adjustable attenuator 221,221 ' is to Optical Receivers 24, after the signal of telecommunication of 24 ' feed-in carries out in various degree decay, finally all exporting described power combiner 22 3 to, to carry out power synthetic, forms one tunnel output, in feed-in corresponding downstream or the up link.By adjustable attenuator 221 is set, 221 ' pad value can be controlled the effect of optical fiber link unit in backup.In general, the pad value that an adjustable attenuator (as 221) must be arranged is the minimum in all adjustable attenuators 221,221 ', and the pad value of other adjustable attenuator (then 221 ') then can correspondingly be lower than this value.Repeatedly test through the applicant, best mode is: the pad value of one of them adjustable attenuator (as 221) is set to 0dB, and the pad value of remaining adjustable attenuator (then 221 ') then is set to be not more than 40dB and is advisable.Desirable, synchronization should have and only have an adjustable attenuator (as 221) ' pad value be 0dB.When the pad value of adjustable attenuator (as 221) is that this road optical fiber link unit of 0dB is when breaking down, the pad value exchange numerical value of the pad value of the adjustable attenuator (221) that optical fiber repeater is corresponding with this optical fiber link unit automatically and other any one adjustable attenuator (then 221 '), at this moment, the minimum optical fiber link unit of new attenuation degree occurs, its signal is the strongest.So, after the signal that synthesizer 22 is exported each adjustable attenuator 221,221 ' synthesizes, just can form the output of one road signal again, on the link of feed-in downlink or uplink again, keep the normal operating conditions of optical fiber repeater.
In addition, known, each repeater includes and is the power module of complete machine distribution accordingly, based on spirit of the present utility model, also can the power module of repeater be backed up, and specifically sees also Fig. 3.Among Fig. 3, adopt power module group 4 to carry out distribution and backup, this power module group 4 comprises two power modules 41 that are used to the complete machine distribution, 41 ', two power module 41,41 ' parallel connections, in addition, the output of each power module 41,41 ' is in series with diode 42,42 ' closing Lu Qianjun, so, when one of them power module (as 41) when breaking down, another one power module (then 41 ') works on, and has further strengthened the reliability of repeater.
The utility model has been realized the backup functionality of the optical fiber link of optical fiber repeater, by optical fiber link is backed up, the reliability of repeater is greatly improved.
Claims (8)
1. the repeater of an optical fiber link backup comprises down link of being made up of near-end duplexer, downstream signal processing module, far-end duplexer and the up link of being made up of far-end duplexer, upward signal processing module, near-end duplexer;
It is characterized in that:
Be respectively arranged with the optical fiber link group in up link and the down link, described optical fiber link group comprises:
Distributor becomes multichannel output with the signal allocation of affiliated link;
A plurality of optical fiber link unit is used to transmit the multiple signals of distributor output;
Synthesizer, link under synthetic one tunnel feed-in of the multiple signals that each optical fiber link unit is sent.
2. the repeater of optical fiber link backup according to claim 1 is characterized in that each optical fiber link unit comprises:
Optical transmission module, the electrical signal conversion that distributor is exported is a light signal;
Optical fiber transmits described light signal;
Optical Receivers, the light signal that Optical Fiber Transmission is come is converted to the described synthesizer of signal of telecommunication feed-in.
3. the repeater of optical fiber link backup according to claim 1 and 2 is characterized in that: described synthesizer adopts the alternative radio-frequency (RF) switch.
4. the repeater of optical fiber link backup according to claim 1 and 2 is characterized in that: described synthesizer adopts relay switch.
5. the repeater of optical fiber link backup according to claim 1 and 2, it is characterized in that: described synthesizer comprises a plurality of adjustable attenuators and the power combiner corresponding to optical fiber link unit number, the Optical Receivers of every adjustable attenuator and every optical fiber link unit electrically connects, and is used for the signal of telecommunication is decayed; Power combiner is used for synthetic one road signal output of the signal of telecommunication of each adjustable attenuator.
6. the repeater of optical fiber link backup according to claim 5 is characterized in that: have the pad value of an adjustable attenuator to be set to minimum in the described synthesizer.
7. the repeater of optical fiber link backup according to claim 6, it is characterized in that: synchronization has and only has the pad value of an adjustable attenuator to be set to 0dB in the described synthesizer, and the pad value of other adjustable attenuator is not higher than 40dB.
8. according to the repeater of claim 1, the backup of 6 or 7 described optical fiber links, it is characterized in that: this repeater also comprises the power module group, this power module group comprises two power modules that are used to the complete machine distribution, two power module parallel connections, and the output of each power module all is in series with diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200489297U CN201042013Y (en) | 2007-02-26 | 2007-02-26 | Optical fiber link backup repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200489297U CN201042013Y (en) | 2007-02-26 | 2007-02-26 | Optical fiber link backup repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201042013Y true CN201042013Y (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200489297U Expired - Fee Related CN201042013Y (en) | 2007-02-26 | 2007-02-26 | Optical fiber link backup repeater |
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| Country | Link |
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| CN (1) | CN201042013Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780530A (en) * | 2011-12-26 | 2012-11-14 | 深圳市虹远通信有限责任公司 | Optical fiber repeater system |
| CN106455946A (en) * | 2014-09-01 | 2017-02-22 | 奥林巴斯株式会社 | Optical communication system and endoscopic system |
-
2007
- 2007-02-26 CN CNU2007200489297U patent/CN201042013Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780530A (en) * | 2011-12-26 | 2012-11-14 | 深圳市虹远通信有限责任公司 | Optical fiber repeater system |
| CN102780530B (en) * | 2011-12-26 | 2015-04-08 | 深圳市虹远通信有限责任公司 | Optical fiber repeater system |
| CN106455946A (en) * | 2014-09-01 | 2017-02-22 | 奥林巴斯株式会社 | Optical communication system and endoscopic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20130226 |