CN201188673Y - Digital radio frequency zooming system base on system backup - Google Patents
Digital radio frequency zooming system base on system backup Download PDFInfo
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- CN201188673Y CN201188673Y CNU2008200471141U CN200820047114U CN201188673Y CN 201188673 Y CN201188673 Y CN 201188673Y CN U2008200471141 U CNU2008200471141 U CN U2008200471141U CN 200820047114 U CN200820047114 U CN 200820047114U CN 201188673 Y CN201188673 Y CN 201188673Y
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- 238000010295 mobile communication Methods 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 230000003321 amplification Effects 0.000 claims description 25
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 25
- 238000011144 upstream manufacturing Methods 0.000 claims description 22
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 230000009885 systemic effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 15
- 238000012545 processing Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000005693 optoelectronics Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000037452 priming Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a digital radio frequency remote system based on system backup, which comprises a digital access control unit and a digital radio frequency remote unit, wherein, the digital access control unit is connected with a mobile communication base station through a coupler; the digital access control unit is connected with the digital radio frequency remote unit through optical fiber to form an uplink and a down-link for signal transmission; an up backup link and a down backup link are included, wherein, the up backup link is arranged parallel with the uplink; the down backup link is arranged parallel with the down-link; the down backup link is connected with the down-link through a mixer module and a power-divider module. Because the digital radio frequency remote system has two channels which are mutually backup on the uplink and the down-link at the remote end of the digital radio frequency remote unit, when one channel has faults, the other channel can work normally so as not to cause the systemic breakdown and meet the requirements of working with high reliability of the radio frequency remote system, thereby being capable of better meeting the covering requirement of the mobile communication network.
Description
Technical field
The utility model relates to mobile communication digital radio frequency remote technology, is specifically related to a kind of digital RF far-drawing system based on system backup.
Background technology
Along with the development of mobile communication, digital RF far-drawing system uses in the network of being everlasting, to optimize the network coverage.Traditional radio frequency stretch system composition frame chart is made up of the digital access control unit of near-end and the digital radio frequency far-pulling unit of far-end as shown in Figure 1.Numeral access control unit is made up of near-end duplexer, the descending frequency-variable module of near-end, the descending digital module of near-end, the up frequency-variable module of near-end, near-end upstream digital module.The digital radio frequency far-pulling unit is made up of the descending digital module of far-end, the descending frequency-variable module of far-end, far-end upstream digital module, the up frequency-variable module of far-end, low noise amplification module, distal power amplification module, far-end duplexer, when wherein key modules such as far-end uplink and downlink digital module, when far-end uplink and downlink frequency-variable module breaks down, can cause that the digital RF far-drawing system complete machine breaks down, thereby influence the normal covering of communication system.Traditional digital RF far-drawing system causes its reliability lower owing to lack the system backup technology, influences the covering of mobile communications network when breaking down easily, is difficult to be suitable in the higher place of reliability requirement.
The utility model content
The purpose of the utility model content is to overcome deficiency and many drawbacks of existing digital RF far-drawing system, a kind of digital RF far-drawing system based on system backup is provided, so that the transmission of the signal of digital RF far-drawing system is more reliable, can better satisfy the covering requirement of mobile communications network.
The purpose of this utility model is achieved through the following technical solutions: a kind of digital RF far-drawing system based on system backup, comprise digital access control unit, digital radio frequency far-pulling unit, digital access control unit is connected with the mobile communication base station by coupler; Numeral access control unit links to each other by optical fiber with the digital radio frequency far-pulling unit, forms the up link and the down link of signal transmission; It is characterized in that: comprise up backup link and descending backup link, described up backup link and up link are parallel to be provided with, and described descending backup link and down link are parallel to be provided with; Descending backup link is connected with the power splitter module by the mixer module with down link.
Described descending backup link comprises that near-end backup duplexer, near-end back up that descending digital module, far-end back up descending digital module, far-end backs up descending frequency-variable module, far-end backup power amplifier module, far-end backup duplexer; Near-end duplexer and parallel setting of near-end backup duplexer, near-end backup duplexer is connected with the mixer module, the mixer module is connected with the power splitter module by the descending frequency-variable module of near-end, the power splitter module backs up descending digital module with descending digital module of near-end and near-end simultaneously and is connected, near-end backs up descending digital module and backs up descending digital module by optical fiber and far-end and be connected, far-end backs up descending digital module and backs up descending frequency-variable module and far-end backup power amplifier module by far-end and be connected, far-end backup power amplifier module is connected with far-end backup duplexer, far-end duplexer and parallel setting of far-end backup duplexer.
Described up backup link comprises that far-end backup duplexer, backup low noise amplification module, far-end back up up frequency-variable module, far-end backup upstream digital module, near-end backup upstream digital module, near-end and back up up frequency-variable module, near-end backup duplexer; Described far-end backup duplexer, backup low noise amplification module, far-end back up that up frequency-variable module, far-end backup upstream digital module, near-end backup upstream digital module, near-end back up up frequency-variable module, near-end backup duplexer connects successively.
Action principle of the present utility model is: the signal of two mobile communication base station generations is sent to the near-end duplexer and the near-end backup duplexer of digital access control unit respectively by two couplers, near-end duplexer and near-end backup duplexer are all isolated downstream signal, the two-way downstream signal closes Lu Chengyi road downstream signal in the mixer module, this downstream signal becomes intermediate-freuqncy signal by the frequency conversion of the descending frequency-variable module of near-end, intermediate-freuqncy signal becomes two paths of signals through the shunt of power splitter module, one tunnel work through the descending digital module of near-end, become digital signal and be modulated onto light signal and also be sent to the digital radio frequency far-pulling unit through optical fiber, light signal is by the work of descending digital module of far-end and the descending frequency-variable module of far-end, become downlink radio-frequency signal, after the amplification of distal power amplification module, output to cover antenna through the far-end duplexer and be transmitted into the interior travelling carriage (mobile phone) of the area of coverage; And power splitter module another road signal along separate routes backs up the work of descending digital module by near-end, also become digital signal and be modulated onto light signal and also be sent to the digital radio frequency far-pulling unit through optical fiber, light signal backs up the work that descending digital module and far-end back up descending frequency-variable module by far-end, also become downlink radio-frequency signal, after far-end backs up the power amplifier module amplification, output to the backup cover antenna through far-end backup duplexer and be transmitted into the interior travelling carriage (mobile phone) of the area of coverage.Its up course of work is the inverse process of above-mentioned downlink working process.The utility model utilizes the uplink and downlink link of the digital radio frequency far-pulling unit of far-end all to have two passages, and backup each other, when one the road went wrong, the existence of system backup made the covering of priming signal and transmission normally carry out, and can better satisfy the covering requirement of mobile communications network.
The utility model has following advantage and effect with respect to prior art: because all there are two mutually redundant passages in this digital radio frequency stretch system at the digital radio frequency far-pulling unit of far-end uplink and downlink link, when a passage breaks down, another passage operate as normal, can not cause systemic breakdown, satisfy the requirement of radio frequency stretch system high reliability workability, thereby can better satisfy the covering requirement of mobile communications network.
Description of drawings
Fig. 1 is the structural representation of existing digital RF far-drawing system.
Fig. 2 is the structural representation of the utility model digital RF far-drawing system.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
Fig. 2 shows concrete structure of the present invention, and as seen from Figure 2, this digital RF far-drawing system based on system backup comprises digital access control unit, digital radio frequency far-pulling unit, and described digital access control unit links to each other by optical fiber with the digital radio frequency far-pulling unit.
Described digital access control unit comprises near-end duplexer (101), mixer module (102), power splitter module (100), the descending frequency-variable module of near-end (103), the descending digital module of near-end (104), near-end backs up descending digital module (110), the up frequency-variable module of near-end (106), near-end upstream digital module (107), near-end backup duplexer (105), near-end backs up up frequency-variable module (108), near-end backup upstream digital module (109), described near-end duplexer (101) is connected with the up frequency-variable module of near-end (106) with the input of mixer module (102) simultaneously, the output of described mixer module (102) is connected with the descending frequency-variable module of near-end (103), the descending frequency-variable module of described near-end (103) is connected with the input of power splitter module (100), the output of described power splitter module (100) backs up descending digital module (110) with descending digital module of near-end (104) and near-end simultaneously and is connected, the up frequency-variable module of described near-end (106) is connected with near-end upstream digital module (107), described near-end backup duplexer (105) backs up up frequency-variable module (108) with another input of mixer module (102) with near-end simultaneously and is connected, and described near-end backs up up frequency-variable module (108) and is connected with near-end backup upstream digital module (109).
Described digital radio frequency far-pulling unit comprises the descending digital module of far-end (111), the descending frequency-variable module of far-end (112), far-end backs up descending digital module (124), far-end backs up descending frequency-variable module (125), distal power amplification module (114), far-end duplexer (122), far-end backup power amplifier module (121), far-end backup duplexer (123), far-end upstream digital module (115), the up frequency-variable module of far-end (116), low noise amplification module (117), far-end backup upstream digital module (118), far-end backs up up frequency-variable module (119), backup low noise amplification module (120), the descending digital module of described far-end (111) is connected with the descending frequency-variable module of far-end (112), the descending frequency-variable module of described far-end (112) is connected with distal power amplification module (114), described far-end duplexer (122) is connected with low noise amplification module (117) with distal power amplification module (114) simultaneously, described far-end backs up descending digital module (124) and backs up descending frequency-variable module (125) with far-end and be connected, described far-end backs up descending frequency-variable module (125) and is connected with far-end backup power amplifier module (121), described far-end backup duplexer (123) is connected with backup low noise amplification module (120) with far-end backup power amplifier module (121) simultaneously, described low noise amplification module (117) is connected with the up frequency-variable module of far-end (116), the up frequency-variable module of described far-end (116) is connected with far-end upstream digital module (115), described backup low noise amplification module (120) backs up up frequency-variable module (119) with far-end and is connected, and described far-end backs up up frequency-variable module (119) and is connected with far-end backup upstream digital module (118).
The signal that mobile communication base station (01) produces is sent to the near-end duplexer (101) of digital access control unit by coupler (02), near-end duplexer (101) is isolated downstream signal, the signal that mobile communication base station (03) produces is sent to the near-end backup duplexer (105) of digital access control unit by coupler (04), near-end backup duplexer (105) is isolated downstream signal, this two-way downstream signal synthesizes one road downstream signal in mixer module (102), this downstream signal is through the amplification of the descending frequency-variable module of near-end (103), frequency conversion becomes intermediate-freuqncy signal.Intermediate-freuqncy signal becomes two paths of signals along separate routes through power splitter module (100), and one tunnel processing and electric light conversion through the descending digital module of near-end (104) is modulated to digital signal light signal and is sent to the digital radio frequency far-pulling unit through optical fiber.Light signal becomes intermediate-freuqncy signal through the opto-electronic conversion and the digital processing of the descending digital module of far-end (111), intermediate-freuqncy signal is through the frequency conversion of the descending frequency-variable module of far-end (112), amplify, become downlink radio-frequency signal, amplify through distal power amplification module (114), output to cover antenna (05) through far-end duplexer (122) and be transmitted into the interior travelling carriage (in machine) of the area of coverage, finish the covering of road mobile communication downlink, and power splitter module (100) another road downstream signal along separate routes, back up the processing and the electric light of descending digital module (110) through near-end and change, digital signal is modulated to light signal and is sent to the digital radio frequency far-pulling unit through optical fiber.Light signal becomes intermediate-freuqncy signal through opto-electronic conversion and the digital processing that far-end backs up descending digital module (124), intermediate-freuqncy signal backs up frequency conversion, the amplification of descending frequency-variable module (125) through far-end, also become downlink radio-frequency signal, amplification through far-end backup power amplifier module (121), output to cover antenna (06) through far-end backup duplexer (123) and be transmitted into the interior travelling carriage (mobile phone) of the area of coverage, finish the covering of another road mobile communication downlink.
More than be that downstream signal covers principle, just opposite for its transfer process of upward signal.The signal that travelling carriage (mobile phone) in the overlay area sends, receive and far-end duplexer (122) work by cover antenna (05), isolate up radiofrequency signal, this radiofrequency signal is amplified and frequency conversion through low noise amplification module (117) and the up frequency-variable module of far-end (116), and the digital processing of far-end upstream digital module (115) and electric light conversion, become digital signal and be modulated to light signal and arrive digital access control unit by Optical Fiber Transmission, light signal is in the opto-electronic conversion and the signal processing of digital access control unit process near-end upstream digital module (107), and the frequency conversion of the up frequency-variable module of near-end (106) is amplified, be reduced to up radiofrequency signal, through near-end duplexer (101) and coupler (02), signal is transferred to mobile communication base station (01), finish the transmission of this road signal; The signal that sends of this travelling carriage (mobile phone) simultaneously, also can pass through cover antenna (06) reception and far-end backup duplexer (123) work simultaneously, isolate up radiofrequency signal, this radiofrequency signal backs up up frequency-variable module (119) amplification and frequency conversion through backup low noise amplification module (120) and far-end, and the digital processing of far-end backup upstream digital module (118) and electric light conversion, become digital signal and be modulated to light signal and arrive digital access control unit by Optical Fiber Transmission, light signal backs up the opto-electronic conversion and the signal processing of upstream digital module (109) through near-end in digital access control unit, and the frequency conversion of the up frequency-variable module of near-end (108) is amplified, be reduced to up radiofrequency signal, through near-end backup duplexer (1 05) and coupler (04), signal is transferred to mobile communication base station (03), finish the signal transmission of up backup path.
Digital RF far-drawing system by the native system backup, the uplink and downlink link all has two passages to set up simultaneously to communicate by letter between travelling carriage (mobile phone) in the area of coverage and the base station, and passage backups each other, make the signal transmission of the area of coverage more reliable, satisfied the covering requirement of mobile communications network better.
Claims (3)
1, a kind of digital RF far-drawing system based on system backup comprises digital access control unit, digital radio frequency far-pulling unit, and digital access control unit is connected with the mobile communication base station by coupler; Numeral access control unit links to each other by optical fiber with the digital radio frequency far-pulling unit, forms the up link and the down link of signal transmission; It is characterized in that: comprise up backup link and descending backup link, described up backup link and up link are parallel to be provided with, and described descending backup link and down link are parallel to be provided with; Descending backup link is connected with the power splitter module by the mixer module with down link.
2, the digital RF far-drawing system based on system backup according to claim 1 is characterized in that: described descending backup link comprises that near-end backup duplexer, near-end back up that descending digital module, far-end back up descending digital module, far-end backs up descending frequency-variable module, far-end backup power amplifier module, far-end backup duplexer; Near-end duplexer and parallel setting of near-end backup duplexer, near-end backup duplexer is connected with the mixer module, the mixer module is connected with the power splitter module by the descending frequency-variable module of near-end, the power splitter module backs up descending digital module with descending digital module of near-end and near-end simultaneously and is connected, near-end backs up descending digital module and backs up descending digital module by optical fiber and far-end and be connected, far-end backs up descending digital module and backs up descending frequency-variable module and far-end backup power amplifier module by far-end and be connected, far-end backup power amplifier module is connected with far-end backup duplexer, far-end duplexer and parallel setting of far-end backup duplexer.
3, the digital RF far-drawing system based on system backup according to claim 1 is characterized in that: described up backup link comprises that far-end backup duplexer, backup low noise amplification module, far-end back up up frequency-variable module, far-end backup upstream digital module, near-end backup upstream digital module, near-end and back up up frequency-variable module, near-end backup duplexer; Described far-end backup duplexer, backup low noise amplification module, far-end back up that up frequency-variable module, far-end backup upstream digital module, near-end backup upstream digital module, near-end back up up frequency-variable module, near-end backup duplexer connects successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200471141U CN201188673Y (en) | 2008-04-29 | 2008-04-29 | Digital radio frequency zooming system base on system backup |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200471141U CN201188673Y (en) | 2008-04-29 | 2008-04-29 | Digital radio frequency zooming system base on system backup |
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| CN201188673Y true CN201188673Y (en) | 2009-01-28 |
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| CNU2008200471141U Expired - Fee Related CN201188673Y (en) | 2008-04-29 | 2008-04-29 | Digital radio frequency zooming system base on system backup |
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Cited By (4)
| 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 |
| CN103368639A (en) * | 2012-03-29 | 2013-10-23 | 京信通信系统（中国）有限公司 | RRU optical fiber switching method and RRU optical fiber switching system |
| CN106572492A (en) * | 2015-10-13 | 2017-04-19 | 中兴通讯股份有限公司 | Remote radio unit and working method thereof |
| CN113746554A (en) * | 2021-08-23 | 2021-12-03 | 福建信同信息科技有限公司 | Optical fiber radio frequency signal zooming device |
-
2008
- 2008-04-29 CN CNU2008200471141U patent/CN201188673Y/en not_active Expired - Fee Related
Cited By (6)
| 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 |
| CN103368639A (en) * | 2012-03-29 | 2013-10-23 | 京信通信系统（中国）有限公司 | RRU optical fiber switching method and RRU optical fiber switching system |
| CN106572492A (en) * | 2015-10-13 | 2017-04-19 | 中兴通讯股份有限公司 | Remote radio unit and working method thereof |
| CN106572492B (en) * | 2015-10-13 | 2021-08-06 | 中兴通讯股份有限公司 | Radio remote unit and working method thereof |
| CN113746554A (en) * | 2021-08-23 | 2021-12-03 | 福建信同信息科技有限公司 | Optical fiber radio frequency signal zooming device |
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Granted publication date: 20090128 Termination date: 20150429 |
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