CN102394698A - Simulated optical fiber repeater distribution system integrated with coverage antenna - Google Patents

Simulated optical fiber repeater distribution system integrated with coverage antenna Download PDF

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Publication number
CN102394698A
CN102394698A CN2011103293034A CN201110329303A CN102394698A CN 102394698 A CN102394698 A CN 102394698A CN 2011103293034 A CN2011103293034 A CN 2011103293034A CN 201110329303 A CN201110329303 A CN 201110329303A CN 102394698 A CN102394698 A CN 102394698A
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China
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optical
port
repeater
optical fiber
signal processing
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CN2011103293034A
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Chinese (zh)
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孙喆
李鑫
王立新
李奇凯
仇慧杰
杜方
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Allwin Telecommunication Co Ltd
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Allwin Telecommunication Co Ltd
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Priority to CN2011103293034A priority Critical patent/CN102394698A/en
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Abstract

The invention belongs to the field of optical fiber repeaters and particularly relates to a simulated optical fiber repeater distribution system integrated with a coverage antenna. The simulated optical fiber repeater distribution system comprises a near-end machine, a relay machine, a far-end machine and a remote feed unit, wherein signal transmission is realized among the near-end machine, the relay machine and the far-end machine by adopting optical fibers; the far-end machine power supply is realized between the relay machine and the far-end machine through the remote feed unit; the near-end machine comprises a signal processing module, a power supply module, an optical splitter and an MODEM module; the ports of the optical splitter and the MODEM module are connected with the port of the signal processing module respectively; the relay machine comprises a signal processing module, a backup signal processing module, an optical splitter and a backup optical splitter; and the far-end machine comprises an optical splitter, an optical emitter, an optical receiver, a backup optical receiver, a combiner, a frequency shift key (FSK) transceiver, a downlink amplifying unit, an uplink amplifying unit, a monitoring unit, a duplexer and a lamp pole antenna. The simulated optical fiber repeater distribution system is convenient for concentrative power supply, high in integration degree and low in construction difficulty; and the coverage end has a bypass function.

Description

The analog optical fiber repeater compartment system of integrated cover antenna
Technical field
The invention belongs to the optical fiber repeater field, is the employing fiber-optic communications traffic specifically, near-end machine coupling base station signal, the analog optical fiber repeater compartment system of the integrated cover antenna of employing remote feeding electricity unit between repeater and remote termination.
Background technology
Along with the continuous development of the 3G communication technology, for the increasing demand increase of wireless network construction and wireless coverage, country carries out the policy of " light advances copper and moves back " simultaneously, and optical fiber telecommunications system has obtained application more and more widely.
The analog optical fiber repeater product for the digital optical fiber direct station product, the maturation that possesses skills, equipment is simple, therefore advantages such as inexpensive, and the characteristics compatible mutually with existing analog signal still are used widely.
Cover in the solution in traditional sub-district, because factors such as the density of building, height in the sub-district all are coated with very big influence to mobile communication, and people more and more pay close attention to electromagnetic radiation, make the addressing more and more difficult more to have increased network planning difficulty.
Summary of the invention
The present invention is intended to overcome the weak point of prior art and a kind of centrally connected power supply of being convenient to is provided; Integrated degree is high; Difficulty of construction is little; And capped end has bypass functionality, and the promptly single capped end Shi Buhui that breaks down influences the analog optical fiber repeater compartment system of the integrated cover antenna of other capped end work.
For solving the problems of the technologies described above, the present invention realizes like this.
The analog optical fiber repeater compartment system of integrated cover antenna, it comprises near-end machine, repeater, remote termination and remote feeding electricity unit; Adopt optical fiber to carry out the signal transmission between said near-end machine, repeater, remote termination; The realization remote termination power supply through the remote feeding electricity unit between said repeater and remote termination.
As a kind of preferred version, near-end machine according to the invention comprises signal processing module, power module, optical branching device and MODEM module; The port of optical branching device and MODEM module joins with the port of signal processing module respectively; Said power module is realized the power supply of source module is arranged.
Further, repeater according to the invention comprises signal processing module and optical branching device; The port of said optical branching device and the port of signal processing module join.
Further, the present invention also is provided with backup signal processing module and backup optical splitter; The port of the port of said backup optical splitter and backup signal processing module joins.
As another kind of preferred version, remote termination according to the invention comprises optical branching device, optical transmitting set, optical receiver, mixer, FSK transceiver, descending amplifying unit, up amplifying unit, monitoring unit, duplexer and lamp stand antenna; The port of said optical receiver joins through the input port of mixer and descending amplifying unit; The output port of up amplifying unit joins through the port of optical transmitting set and optical branching device; Said FSK transceiver is located between optical transmitting set input port and the optical receiver output port; The port of the port of said monitoring unit and FSK transceiver, up amplifying unit and descending amplifying unit joins; The main optical path signal that optical receiver receives gets into descending amplifying unit and amplifies after mixer is handled, export the lamp stand antenna to through duplexer again and realize that signal covers; The upward signal that the lamp stand antenna receives is amplified by up amplifying unit after duplexer filtering, transmits to the near-end machine through optical transmitting set and optical branching device again.
Further, the present invention also is provided with the backup optical receiver; The output port of said backup optical receiver connects the input port of mixer.
Further, remote feeding electricity according to the invention unit networking mode can be selected star net forming; It is 3 tunnel optical transmission that the near-end machine is expanded, and the repeater topology is 8 tunnel optical transmission, 24 of topological remote terminations.
In addition, remote feeding electricity according to the invention unit networking mode also can be selected the networking of daisy chain type; Each repeater is connected with a remote termination through 16 core feed optical cables, is initial point with said remote termination, between all the other 7 remote termination capping units, uses 18 core feed optical cable.
The present invention adopts integrated design, can reduce difficulty of construction, and every antenna covers separately, has reduced the failure rate of system; In addition, the covering adjustable power of single antenna of the present invention is convenient to optimize and revise; Secondly, capped end of the present invention has bypass functionality, and the promptly single capped end Shi Buhui that breaks down influences other capped end work; Once more, the present invention adopts Optical Fiber Transmission, can avoid covering because of the stability influence of radio frequency cable, radio-frequency devices; The present invention adopts the remote feeding electricity mode, is convenient to centrally connected power supply.
The key technical indexes.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.Protection scope of the present invention not only is confined to the statement of following content.
Fig. 1 is a system block diagram of the present invention.
Fig. 2 is a near-end machine system block diagram of the present invention.
Fig. 3 is the repeater system block diagram of band Hot Spare of the present invention.
Fig. 4 prepares and carries the remote termination system block diagram of part for the present invention.
Fig. 5 is remote feeding electricity of the present invention system star net forming mode block diagram.
Fig. 6 is remote feeding electricity of the present invention system chrysanthemum communication link protection block diagram.
Fig. 7 is the integrated capping unit design sketch that beautifies of the present invention.
Embodiment
As shown in the figure, the analog optical fiber repeater compartment system of integrated cover antenna, it comprises near-end machine, repeater, remote termination and remote feeding electricity unit; Adopt optical fiber to carry out the signal transmission between said near-end machine, repeater and remote termination; The realization remote termination power supply through the remote feeding electricity unit between said repeater and remote termination.
Near-end machine according to the invention comprises signal processing module, power module, optical branching device and MODEM module; The port of optical branching device and MODEM module joins with the port of signal processing module respectively; Said power module is realized the power supply of source module is arranged.
Repeater according to the invention comprises signal processing module and optical branching device; The port of said optical branching device and the port of signal processing module join.
The present invention also is provided with backup signal processing module and backup optical splitter; The port of the port of said backup optical splitter and backup signal processing module joins.
Remote termination according to the invention comprises optical branching device, optical transmitting set, optical receiver, mixer, FSK transceiver, descending amplifying unit, up amplifying unit, monitoring unit, duplexer and lamp stand antenna; The port of said optical receiver joins through the input port of mixer and descending amplifying unit; The output port of up amplifying unit joins through the port of optical transmitting set and optical branching device; Said FSK transceiver is located between optical transmitting set input port and the optical receiver output port; The port of the port of said monitoring unit and FSK transceiver, up amplifying unit and descending amplifying unit joins; The main optical path signal that optical receiver receives gets into descending amplifying unit and amplifies after mixer is handled, export the lamp stand antenna to through duplexer again and realize that signal covers; The upward signal that the lamp stand antenna receives is amplified by up amplifying unit after duplexer filtering, transmits to the near-end machine through optical transmitting set and optical branching device again.
The present invention also is provided with the backup optical receiver; The output port of said backup optical receiver connects the input port of mixer.
Referring to Fig. 5, remote feeding electricity according to the invention unit networking mode () star net forming; A repeater is transferred to remote termination 1, remote termination 2, remote termination 3, remote termination 4, remote termination 5, remote termination 6, remote termination 7, remote termination 8 through the transmission of 8 road optoelectronic composite cables.
Referring to Fig. 6, remote feeding electricity according to the invention unit networking mode (two) chrysanthemum communication link protection; Every repeater is connected with remote termination 4 through 16 core feed optical cables, is initial point with remote termination 4, uses one 8 core feed optical cable, links to each other with remote termination 3, remote termination 2, remote termination 1; Re-use one 8 core feed light path, link to each other with remote termination 5, remote termination 6, remote termination 7, remote termination 8.
Referring to Fig. 1, the analog optical fiber repeater compartment system of integrated cover antenna comprises a near-end machine, three repeaters and 24 remote termination capping units.Near-end machine according to the invention contains signal processing module, MODEM module, power module and optical transceiver module.
Repeater according to the invention is as the relay, and it comprises optical transceiver module, gain amplification module, signal processing module.
Remote termination according to the invention comprises optical branching device, optical transmitting set, optical receiver, mixer, FSK transceiver, descending amplifying unit, up amplifying unit, monitoring unit, duplexer and lamp stand antenna.
Remote feeding electricity according to the invention unit comprises fibre melting disc and power supply protection wiring units.
Near-end machine according to the invention can be extended to 3 tunnel optical transmission, and repeater can be topological to 8 tunnel optical transmission, 24 of the maximum topological remote terminations of system.
System operating mode of the present invention is following.
At down link, the near-end machine is modulated into light signal with the base station down signal that receives and transmits to repeater.Repeater carries out the downlink optical signal that receives gain compensation and expands to 8 road light signals transmitting to remote termination.Remote termination demodulates the signal of telecommunication after receiving downlink optical signal, carries out radio frequency and is amplified to power demand, through the descending covering of lamp stand antenna output carrying out.
In up link; After the lamp stand antenna receives up radiofrequency signal and gets into remote termination and carry out processing and amplifying; Carry out light modulation and change uplink optical signal into, the multichannel uplink optical signal transfers to repeater and carries out the separate optical path demodulation, and every road signal of telecommunication is closed the road; Be modulated into light signal again, finally transfer to the near-end machine.The near-end machine exports the base station to after uplink optical signal is demodulated to the signal of telecommunication.
Near-end machine system configuration is referring to Fig. 2, and the near-end machine can contain signal processing module, power module, optical branching device and MODEM module.Signal processing module is accomplished access, light modulation, optical modulator, the compensation of signal and is amplified; The signal processing functions such as inhibition of making an uproar of the up end are accomplished the condition monitoring of near-end machine, operating state indication simultaneously; Amplify the link gain setting, local communication function such as communicate by letter with other functional units of covering system; Power module is realized the power supply of source module is arranged; The MODEM module is accomplished the remote monitoring with network management center, and the carrier frequency following function; Optical branching device is accomplished the expanded function of descending light path.
The repeater system architecture diagram is as shown in Figure 3, and at down link, the downlink optical signal that repeater receives optical fiber carries out carrying out after the demodulation transition of communications of FSK, and the signal of communication that amplifies demodulation simultaneously compensates.Being divided into 8 passages again transmits.In up link, 8 passage uplink optical signals that repeater will receive are separated and are in harmonious proportion the FSK transition of communications, carry out gain compensation after up radiofrequency signal is closed the road, are modulated into the single channel light signal and transmit, thereby realize increasing the function of remote termination quantity.Repeater comprises functional modules such as signal processing module, backup signal processing module, two eight passage optical branching devices and power module, when the main signal processing module breaks down, can automatically switch to the backup signal processing module, guarantees the transmission of signal.
When being connected with remote termination, backup type repeater can main signal processing module and backup signal processing module common optical pathways also can be used independent light path.Can realize the light path backup functionality when using separate optical path, promptly when the light path of repeater and remote termination breaks down, can switch to and carry out optical signal transmission, realize that it is backup type remote termination that the light path backup functionality needs remote termination from light path.
Remote termination capped end system architecture diagram is as shown in Figure 4; The remote feeding electricity unit is realized the photoelectricity mixed signal that the feed optical cable transmits is separated; Light signal is sent to signal uplink amplifying unit and descending amplifying unit, and alternating current is sent to power module and supplies power; Power module is realized the power supply to each functional module; Monitoring unit is accomplished the modulation of separating the up radiofrequency signal of mediation of downlink optical signal, the amplification of radiofrequency signal, to the monitoring of capping unit operating state; Power module is realized the power supply to each functional module.
Backup type remote termination comprises an optical transmitting set, two optical receivers, a FSK transceiver, an optical branching device, a descending amplifying unit, a up amplifying unit, a monitoring unit and a duplexer.Two optical receivers simultaneously in working order; But the radiofrequency signal of having only an optical receiver demodulation gets into amplifying unit amplifies; The signal of normal key light receiver demodulation gets into descending amplifying unit through mixer and amplifies, and the optical receiver of backup light path occurs automatically switching to when unusual at main optical path.Upward signal has output two light paths, and controlling wherein by repeater, the signal of a light path transmits to the near-end machine.
Integrated far-end capping unit comprises far-end pedestal, lamp stand antenna and lamp stand, and structure is as shown in Figure 7.
The remote feeding electricity mode is divided two kinds.
A, each repeater connect 8 remote terminations, and each remote termination uses 1 feed optical cable to be connected with repeater, and each remote termination is independent feed, and is as shown in Figure 5.
B, in the sub-district covers, the spacing of antenna is general all in 100 meters, so every repeater is connected with remote termination 4 through 16 core feed optical cables, is initial point with remote termination 4, uses one 8 core feed optical cable, links to each other with remote termination 3, remote termination 2, remote termination 1; Re-use one 8 core feed light path, link to each other with remote termination 5, remote termination 6, remote termination 7, remote termination 8.
Be with being appreciated that; More than about specific descriptions of the present invention; Only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention, to reach identical technique effect; As long as satisfy the use needs, all within protection scope of the present invention.

Claims (8)

1. the analog optical fiber repeater compartment system of integrated cover antenna is characterized in that: comprise near-end machine, repeater, remote termination and remote feeding electricity unit; Adopt optical fiber to carry out the signal transmission between said near-end machine, repeater and remote termination; The realization remote termination power supply through the remote feeding electricity unit between said repeater and remote termination.
2. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 1, it is characterized in that: said near-end machine comprises signal processing module, power module, optical branching device and MODEM module; The port of optical branching device and MODEM module joins with the port of signal processing module respectively; Said power module is realized the power supply of source module is arranged.
3. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 2, it is characterized in that: said repeater comprises signal processing module and optical branching device; The port of said optical branching device and the port of signal processing module join.
4. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 3 is characterized in that: also be provided with backup signal processing module and backup optical splitter; The port of the port of said backup optical splitter and backup signal processing module joins.
5. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 4, it is characterized in that: said remote termination comprises optical branching device, optical transmitting set, optical receiver, mixer, FSK transceiver, descending amplifying unit, up amplifying unit, monitoring unit, duplexer and lamp stand antenna; The port of said optical receiver joins through the input port of mixer and descending amplifying unit; The output port of up amplifying unit joins through the port of optical transmitting set and optical branching device; Said FSK transceiver is located between optical transmitting set input port and the optical receiver output port; The port of the port of said monitoring unit and FSK transceiver, up amplifying unit and descending amplifying unit joins; The main optical path signal that optical receiver receives gets into descending amplifying unit and amplifies after mixer is handled, export the lamp stand antenna to through duplexer again and realize that signal covers; The upward signal that the lamp stand antenna receives is amplified by up amplifying unit after duplexer filtering, transmits to the near-end machine through optical transmitting set and optical branching device again.
6. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 5 is characterized in that: also be provided with the backup optical receiver; The output port of said backup optical receiver connects the input port of mixer.
7. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 6, it is characterized in that: said remote feeding electricity unit networking mode is a star net forming; It is 3 tunnel optical transmission that the near-end machine is expanded, and the repeater topology is 8 tunnel optical transmission, 24 of topological remote terminations.
8. the analog optical fiber repeater compartment system of integrated cover antenna according to claim 6, it is characterized in that: said remote feeding electricity unit networking mode is the chrysanthemum chain networking; Each repeater is connected with a remote termination through 16 core feed optical cables, is initial point with said remote termination, between all the other 7 remote termination capping units, uses 18 core feed optical cable.
CN2011103293034A 2011-10-26 2011-10-26 Simulated optical fiber repeater distribution system integrated with coverage antenna Pending CN102394698A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595474A (en) * 2013-11-12 2014-02-19 宁波环球广电科技有限公司 Node device for optical fiber radio frequency transmission
CN103795573A (en) * 2014-01-26 2014-05-14 深圳市华普特科技有限公司 Network topology generation method, device and system
CN103825658A (en) * 2014-03-21 2014-05-28 福建师范大学 LTE-A (Long Term Evolution-Advanced) relay system for improving efficiency of return link by use of optical communication
CN105406917A (en) * 2015-09-30 2016-03-16 广州埃信电信设备有限公司 Full hot backup digital processing and light distribution system
WO2016179751A1 (en) * 2015-05-08 2016-11-17 京信通信技术(广州)有限公司 Signal backup system and method for near-end machine of active das
CN102624461B (en) * 2012-04-15 2016-12-14 杭州迪康通信有限公司 Optical fiber repeater two-way converting method of work and two-way converting optical fiber repeater
CN114095082A (en) * 2021-11-23 2022-02-25 罗森伯格技术有限公司 Optical fiber detection method, control module and computer medium of distributed antenna system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102624461B (en) * 2012-04-15 2016-12-14 杭州迪康通信有限公司 Optical fiber repeater two-way converting method of work and two-way converting optical fiber repeater
CN103595474B (en) * 2013-11-12 2015-11-11 宁波环球广电科技有限公司 Node device for optical fiber radio frequency transmission
CN103595474A (en) * 2013-11-12 2014-02-19 宁波环球广电科技有限公司 Node device for optical fiber radio frequency transmission
CN103795573A (en) * 2014-01-26 2014-05-14 深圳市华普特科技有限公司 Network topology generation method, device and system
CN103795573B (en) * 2014-01-26 2017-10-03 华普特科技(深圳)股份有限公司 A kind of network topology generation method, apparatus and system
CN103825658A (en) * 2014-03-21 2014-05-28 福建师范大学 LTE-A (Long Term Evolution-Advanced) relay system for improving efficiency of return link by use of optical communication
WO2016179751A1 (en) * 2015-05-08 2016-11-17 京信通信技术(广州)有限公司 Signal backup system and method for near-end machine of active das
US10064143B2 (en) 2015-05-08 2018-08-28 Comba Telecom Technology (Guangzhou) Co., Ltd. System and method for signal backup of active DAS master unit
CN105406917A (en) * 2015-09-30 2016-03-16 广州埃信电信设备有限公司 Full hot backup digital processing and light distribution system
CN105406917B (en) * 2015-09-30 2019-01-25 广州埃信电信设备有限公司 A kind of full warm back-up digital processing and light distribution system
CN114095082A (en) * 2021-11-23 2022-02-25 罗森伯格技术有限公司 Optical fiber detection method, control module and computer medium of distributed antenna system
WO2023092867A1 (en) * 2021-11-23 2023-06-01 普罗斯通信技术(苏州)有限公司 Optical fiber detection method for distributed antenna system, and control module and computer medium
CN114095082B (en) * 2021-11-23 2023-07-25 普罗斯通信技术(苏州)有限公司 Optical fiber detection method, control module and computer medium of distributed antenna system

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Application publication date: 20120328