CN102523049A - Comprehensive broadband home system based on fiber to the home (FTTH) and signal transmission method thereof - Google Patents
Comprehensive broadband home system based on fiber to the home (FTTH) and signal transmission method thereof Download PDFInfo
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Abstract
The invention relates to an optical communication and mobile communication access network technology and especially relates to a comprehensive broadband home system based on fiber to the home (FTTH). The system is characterized in that: the system comprises: a down link and an uplink, which are formed together; the down link and the uplink both comprise a near-end unit and a plurality of remote units; the near-end unit is connected with mobile communication base stations with different frequency ranges simultaneously through a coupler; the near-end unit is connected with an OLT through a fiber; the near-end unit is connected with an ODN network through the fiber; the ODN network is connected with a plurality of remote units through the fiber; the remote units is connected with an ONU through the fiber; the near-end unit comprises: a duplexer module, a digital intermediate frequency dish module, an up-converter module, a down-converter module and a WDM module; the remote unit comprises: the duplexer module, a low noise amplifier module, an amplifier module, the digital intermediate frequency dish module, the up-converter module, the down-converter module and the WDM module. According to the invention, a structure is reasonable; an integration level is high and a plurality of frequency range signals can be simultaneously covered.
Description
Technical field
The present invention relates to optical communication and mobile communication access network technology, be specifically related to a kind of comprehensive broadband system of registering one's residence based on FTTH (Fiber To TheHome, Fiber to the home).
Background technology
Wireless penetration and broadband be the focus of current communication industry and even whole information industry.Radio communication makes at any time, Anywhere with anyone between communicate by letter and become possibility.And broadband connections can be sent to enterprise and household person user apace with miscellaneous service information such as data, voice, video and multimedias, has enriched people's work and life.So the two combination is undoubtedly the developing direction of future communications.FTTH just is being able to greatly develop as the ultimate aim of last kilometer access at present, FTTH combined with 2G, 3G, 4G mobile communication, and also be trend of the times.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of comprehensive broadband based on FTTH system of registering one's residence is provided, utilize the EPON of existing FTTH to transmit mobile communication signal, it is rational in infrastructure, and integrated level is high, and can cover a plurality of frequency band signals simultaneously.
For solving above technical problem; Technical scheme of the present invention is: a kind of comprehensive broadband based on FTTH system of registering one's residence; Its difference is: it comprises common formation down link, up link, and down link, up link include near-end unit and a plurality of far-end unit; The near-end unit is connected with the mobile communication base station of different frequency range through coupler simultaneously; The near-end unit is connected through optical fiber with OLT; The near-end unit is connected with the ODN network through optical fiber, and the ODN network is connected with a plurality of far-end units through optical fiber, and far-end unit is connected with ONU through optical fiber; The near-end unit comprises duplexer module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module; Far-end unit comprises duplexer module, low noise amplifier module, amplifier module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module.
By above scheme, the down link that makes progress at side signal transmission comprises successively: near-end duplexer module, near-end down conversion module, near-end digital intermediate frequency disk module, near-end WDM module, ODN network, far-end WDM module, remote digital intermediate frequency disk module, far-end up-conversion module, far-end amplifier module, far-end duplexer module.
By above scheme; Make progress at side signal transmission; Its up link comprises successively: far-end duplexer module, far-end low noise amplifier module, far-end down conversion module, remote digital intermediate frequency disk module, far-end WDM module, ODN network, near-end WDM module, near-end digital intermediate frequency disk module, near-end up-conversion module, near-end duplexer module.
Based on the register one's residence method for transmitting signals of system of the comprehensive broadband of FTTH, its method comprises transmitting step and the transmitting step in up link of signal in down link; When signal transmits in down link; At first also pass through duplexer filtering through the coupler coupling from the radiofrequency signal of a plurality of frequency ranges of different base station by the near-end unit; Then each radiofrequency signal is converted to intermediate frequency through down conversion module, forms analog if signal and transfer to the digital intermediate frequency disk module, the digital intermediate frequency disk module passes through the AD conversion with each standard analog if signal; Convert digital signal to; Carry out digitized processing then, adopt time-multiplexed mode that the digital signal of each standard is closed the road, obtain complex digital signal; And complex digital signal is modulated into descending mobile light signal through laser; Descending mobile light signal adopts the mode of broadcasting to transfer to a plurality of far-end units, and closes the road with the descending EPON/GPON light signal of OLT output through the WDM module, exports descending photoreactivation signal and transfers to the ODN network; The ODN network carries out beam split with descending photoreactivation signal, and through the optical signal transmission of optical fiber after with beam split to each far-end unit; The WDM module of each far-end unit is with descending mobile light signal and descending EPON/GPON light signal demultiplexing; And with descending EPON/GPON optical signal transmission to ONU; And with descending mobile optical signal transmission to digital intermediate frequency disk module; The descending mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal, and the digital signal of different systems is separated, and then the digital signal of each standard is carried out digitized processing; Be reduced into analog if signal and transfer to corresponding up-conversion module respectively through the DA conversion; Each up-conversion module upconverts to radio frequency with analog if signal, and the output analog radio-frequency signal also transfers to the corresponding amplifier module respectively and amplifies, and behind the duplexer filtering interference signals, transfers to antenna then and covers to accomplish signal;
When signal transmits in up link; Be received from the radiofrequency signal elder generation process duplexer filtering interference signals of the different frequency range of each remote unit antenna, the radiofrequency signal with each frequency range is converted to intermediate frequency through the low noise amplifier amplification and by down conversion module respectively then, forms analog if signal and also is sent to the digital intermediate frequency disk module; The digital intermediate frequency disk module passes through the AD conversion with each standard analog if signal; Convert digital signal to, carry out digitized processing then, adopt time-multiplexed mode to close the road; Obtain complex digital signal; Adopt the mode of time division multiple access in time slot separately, through laser complex digital signal to be modulated into up mobile light signal, the up EPON/GPON light signal of up mobile light signal and ONU output closes the road through the WDM module, exports up photoreactivation signal and transfers to the ODN network.The ODN network closes the road with the up photoreactivation signal of each far-end unit, is transmitted through the fiber to the WDM module of near-end unit then; The WDM module of near-end unit; With up mobile light signal and up EPON/GPON light signal demultiplexing; And with up EPON/GPON optical signal transmission to OLT; And with up mobile optical signal transmission to digital intermediate frequency disk module, the up mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal, and the digital signal of different systems is separated; Then the digital signal of each standard is carried out digitized processing; Be reduced into analog if signal and transfer to corresponding up-conversion module through DA conversion, each up-conversion module upconverts to radio frequency with analog if signal, and the output analog radio-frequency signal also exports the radiofrequency signal of each frequency range to corresponding base station through coupler behind duplexing filtering interference signals.
The contrast prior art, beneficial features of the present invention is following:
1), should be based on the comprehensive broadband of the FTTH system of registering one's residence; Realization multiband transmission: present device can be unified transmission with the mobile communication signal of a plurality of different frequency ranges between base station and far-end unit, is transferred to far-end unit to the signal of a plurality of frequency ranges such as GSM, DCS, CDMA, WCDMA, TD-SCDMA, LTE etc. simultaneously and carries out indoor covering.
2), should be based on the comprehensive broadband of the FTTH system of registering one's residence; The realization optical-fiber wireless merges: the present invention combines the EPON of FTTH with the GSM of 2G, 3G, 4G, demonstrated fully the flexibility of mobile communication access way and the characteristics in the high broadband of optical fiber communication.
3), should be based on the comprehensive broadband of the FTTH system of registering one's residence; The networking cost is low: the present invention utilizes the EPON of existing FTTH to transmit mobile communication signal; Practiced thrift wiring cost; Reduce property and coordinated difficulty, and when carrying out the covering of a plurality of frequency band signals, only with satisfying the multi-band signal transmission requirements once this equipment of cover.
4), should be based on the comprehensive broadband of the FTTH system of registering one's residence, volume is little, and is easy for installation: the present invention can replace the fiber broadband connecting systems of many cover one-segment, thereby characteristics such as it is little to have floor space, and line is simple.
Description of drawings
Fig. 1 is the register one's residence near-end cell schematics of systematic schematic diagram of the comprehensive broadband that the present invention is based on FTTH.
Fig. 2 is the register one's residence far-end unit sketch map of systematic schematic diagram of the comprehensive broadband that the present invention is based on FTTH.
Embodiment
Combine accompanying drawing that the present invention is done further explain through embodiment below.
Fig. 1 and Fig. 2 show concrete structure of the present invention; This is made up of near-end unit and a plurality of far-end unit based on the comprehensive broadband of the FTTH system of registering one's residence jointly; Be connected through the ODN network between said near-end unit and a plurality of far-end units, form the up link and the down link of signal transmission.Said near-end unit comprises duplexer module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module; Far-end unit comprises duplexer module, low noise amplifier module, amplifier module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module.
In down link: duplexer carries out filtering to each radiofrequency signal; Then GSM, TD-SCDMA, TD-LTE radiofrequency signal are downconverted to intermediate frequency through down conversion module 151,152,153; Form GSM, TD-SCDMA, TD-LTE analog if signal and transfer to digital intermediate frequency disk module 61; The digital intermediate frequency disk module through the AD conversion, converts GSM, TD-SCDMA, TD-LTE analog if signal to GSM, TD-SCDMA, TD-LTE digital signal, carries out digitized processing then; Adopt time-multiplexed mode that GSM, TD-SCDMA, TD-LTE digital signal are closed the road; Obtain complex digital signal, and through laser complex digital signal is modulated into descending mobile light signal, descending mobile light signal adopts the mode of broadcasting to be sent to a plurality of far-end units; And closing rood to descending photoreactivation signal through WDM module 81 with the descending EPON/GPON light signal of OLT71 output, descending photoreactivation signal is transmitted through the fiber to ODN network 91.The ODN network carries out beam split with descending photoreactivation signal, then through optical signal transmission to the far-end unit 101,102 of optical fiber after with beam split.The WDM module 111 of far-end unit is with descending mobile light signal and descending EPON/GPON light signal demultiplexing; And with descending EPON/GPON optical signal transmission to ONU121; And with descending mobile optical signal transmission to digital intermediate frequency disk module 131; The descending mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal; And GSM, TD-SCDMA, TD-LTE digital signal separated, then GSM, TD-SCDMA, TD-LTE digital signal are carried out digitized processing after, be reduced into GSM, TD-SCDMA, TD-LTE analog if signal and transfer to up-conversion module 141,142,143 respectively through the DA conversion; Each up-conversion module upconverts to radio frequency with GSM, TD-SCDMA, TD-LTE analog if signal, output GSM, TD-SCDMA, TD-LTE radiofrequency signal.After GSM, DCS, TD-SCDMA radiofrequency signal are amplified through amplifier 161,162,163; By duplexer 181,182,183 filtering interference signals; Transfer to antenna 191,192,193 at last and cover, can accomplish downstream signal 11,12,13 transmission from the base station to antenna 191,192,193.
The transmission direction and the down link of up link are opposite, and principle is close.In up link: the GSM of portable terminal emission, TD-SCDMA, TD-LTE radiofrequency signal are through antenna 191,192,193 receptions and behind duplexer 181,182,183 filtering interference signals; At first be transferred to low noise amplifier module 171,172,173 and carry out the low noise amplification; Then GSM, TD-SCDMA, TD-LTE radiofrequency signal are downconverted to intermediate frequency through down conversion module 151,152,153; Form GSM, TD-SCDMA, TD-LTE analog if signal and transfer to digital intermediate frequency disk module 131; The digital intermediate frequency disk module passes through the AD conversion with GSM, TD-SCDMA, TD-LTE analog if signal; Convert GSM, TD-SCDMA, TD-LTE digital signal to; Carry out digitized processing then; Adopt time-multiplexed mode that GSM, TD-SCDMA, TD-LTE digital signal are closed the road, obtain complex digital signal, and adopt the mode of time division multiple access in time slot separately, complex digital signal to be modulated into up mobile light signal through laser; The up EPON/GPON light signal of up mobile light signal and ONU121 output closes rood to up photoreactivation signal through WDM module 111, and up photoreactivation signal is transmitted through the fiber to ODN network 91.The ODN network closes the road with the up photoreactivation signal of each far-end unit; Be transmitted through the fiber to the WDM module 81 of near-end unit then; The WDM module is with up mobile light signal and up EPON/GPON light signal demultiplexing; And with up EPON/GPON optical signal transmission to OLT71; And with up mobile optical signal transmission to digital intermediate frequency disk module 61, the up mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal, and GSM, TD-SCDMA, TD-LTE digital signal are separated; After then GSM, TD-SCDMA, TD-LTE digital signal being carried out digitized processing; Be reduced into GSM, TD-SCDMA, TD-LTE analog if signal and transfer to up- conversion module 51,52,53 respectively through the DA conversion, each up-conversion module upconverts to radio frequency with GSM, TD-SCDMA, TD-LTE analog if signal, output GSM, TD-SCDMA, TD-LTE radiofrequency signal.GSM, DCS, TD-SCDMA radiofrequency signal are by duplexer 31,32,33 filtering interference signals; And be coupled to corresponding base station 11,12,13 through coupler 21,22,23, can accomplish upward signal from antenna 191,192,193 11,12,13 transmission to the base station.
Among the present invention; Descending mobile communication light carrier, up mobile communication light carrier, descending EPON/EPON light carrier, up EPON/GPON light carrier all adopt different wavelengths; In an optical fiber of the ODN of FTTH network, carry out mixed transport through WDM technology; Descending mobile light signal adopts the mode of broadcasting to transfer to each far-end unit; Up mobile light signal adopts the mode of time division multiple access, and the up mobile light signal of transmission can not clash when the ODN network closes the road guaranteeing in different time slots.
Above content is to combine concrete execution mode to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (4)
1. the comprehensive broadband based on FTTH system of registering one's residence, it is characterized in that: it comprises common formation down link, up link, down link, up link include near-end unit and a plurality of far-end unit; The near-end unit is connected with the mobile communication base station of different frequency range through coupler simultaneously; The near-end unit is connected through optical fiber with OLT; The near-end unit is connected with the ODN network through optical fiber, and the ODN network is connected with a plurality of far-end units through optical fiber, and far-end unit is connected with ONU through optical fiber; The near-end unit comprises duplexer module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module; Far-end unit comprises duplexer module, low noise amplifier module, amplifier module, digital intermediate frequency disk module, up-conversion module, down conversion module and WDM module.
2. the comprehensive broadband based on the FTTH as claimed in claim 1 system of registering one's residence, it is characterized in that: the down link that makes progress at side signal transmission comprises successively: near-end duplexer module, near-end down conversion module, near-end digital intermediate frequency disk module, near-end WDM module, ODN network, far-end WDM module, remote digital intermediate frequency disk module, far-end up-conversion module, far-end amplifier module, far-end duplexer module.
3. according to claim 1 or claim 2 the comprehensive broadband system of registering one's residence based on FTTH; It is characterized in that: make progress at side signal transmission; Its up link comprises successively: far-end duplexer module, far-end low noise amplifier module, far-end down conversion module, remote digital intermediate frequency disk module, far-end WDM module, ODN network, near-end WDM module, near-end digital intermediate frequency disk module, near-end up-conversion module, near-end duplexer module.
4. based on the register one's residence method for transmitting signals of system of the comprehensive broadband of FTTH, it is characterized in that: its method comprises transmitting step and the transmitting step in up link of signal in down link; When signal transmits in down link; At first also pass through duplexer filtering through the coupler coupling from the radiofrequency signal of a plurality of frequency ranges of different base station by the near-end unit; Then each radiofrequency signal is converted to intermediate frequency through down conversion module, forms analog if signal and transfer to the digital intermediate frequency disk module, the digital intermediate frequency disk module passes through the AD conversion with each standard analog if signal; Convert digital signal to; Carry out digitized processing then, adopt time-multiplexed mode that the digital signal of each standard is closed the road, obtain complex digital signal; And complex digital signal is modulated into descending mobile light signal through laser; Descending mobile light signal adopts the mode of broadcasting to transfer to a plurality of far-end units, and closes the road with the descending EPON/GPON light signal of OLT output through the WDM module, exports descending photoreactivation signal and transfers to the ODN network; The ODN network carries out beam split with descending photoreactivation signal, and through the optical signal transmission of optical fiber after with beam split to each far-end unit; The WDM module of each far-end unit is with descending mobile light signal and descending EPON/GPON light signal demultiplexing; And with descending EPON/GPON optical signal transmission to ONU; And with descending mobile optical signal transmission to digital intermediate frequency disk module; The descending mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal, and the digital signal of different systems is separated, and then the digital signal of each standard is carried out digitized processing; Be reduced into analog if signal and transfer to corresponding up-conversion module respectively through the DA conversion; Each up-conversion module upconverts to radio frequency with analog if signal, and the output analog radio-frequency signal also transfers to the corresponding amplifier module respectively and amplifies, and behind the duplexer filtering interference signals, transfers to antenna then and covers to accomplish signal;
When signal transmits in up link; Be received from the radiofrequency signal elder generation process duplexer filtering interference signals of the different frequency range of each remote unit antenna, the radiofrequency signal with each frequency range is converted to intermediate frequency through the low noise amplifier amplification and by down conversion module respectively then, forms analog if signal and also is sent to the digital intermediate frequency disk module; The digital intermediate frequency disk module passes through the AD conversion with each standard analog if signal; Convert digital signal to, carry out digitized processing then, adopt time-multiplexed mode to close the road; Obtain complex digital signal; Adopt the mode of time division multiple access in time slot separately, through laser complex digital signal to be modulated into up mobile light signal, the up EPON/GPON light signal of up mobile light signal and ONU output closes the road through the WDM module, exports up photoreactivation signal and transfers to the ODN network.The ODN network closes the road with the up photoreactivation signal of each far-end unit, is transmitted through the fiber to the WDM module of near-end unit then; The WDM module of near-end unit; With up mobile light signal and up EPON/GPON light signal demultiplexing; And with up EPON/GPON optical signal transmission to OLT; And with up mobile optical signal transmission to digital intermediate frequency disk module, the up mobile light signal that the digital intermediate frequency disk module will receive carries out opto-electronic conversion and is reduced into complex digital signal, and the digital signal of different systems is separated; Then the digital signal of each standard is carried out digitized processing; Be reduced into analog if signal and transfer to corresponding up-conversion module through DA conversion, each up-conversion module upconverts to radio frequency with analog if signal, and the output analog radio-frequency signal also exports the radiofrequency signal of each frequency range to corresponding base station through coupler behind duplexing filtering interference signals.
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| CN2011104106904A CN102523049A (en) | 2011-12-12 | 2011-12-12 | Comprehensive broadband home system based on fiber to the home (FTTH) and signal transmission method thereof |
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| CN2011104106904A CN102523049A (en) | 2011-12-12 | 2011-12-12 | Comprehensive broadband home system based on fiber to the home (FTTH) and signal transmission method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102694596A (en) * | 2012-06-28 | 2012-09-26 | 武汉虹信通信技术有限责任公司 | Method for transmitting wireless signal by using FTTH (Fiber To The Home) system |
| CN103581773A (en) * | 2013-10-31 | 2014-02-12 | 烽火通信科技股份有限公司 | Multi-service access system and method based on PON |
| CN104065413A (en) * | 2014-07-10 | 2014-09-24 | 中邮科通信技术股份有限公司 | Digital multi-medium transmission to-the-home covering system |
| WO2015024453A1 (en) * | 2013-08-20 | 2015-02-26 | 烽火通信科技股份有限公司 | Ftth network based optical fiber, and wireless hybrid access system and hybrid access method |
| CN105553528A (en) * | 2014-10-31 | 2016-05-04 | 罗森伯格技术（昆山）有限公司 | Multi-network integration access system based on LTE |
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| CN201243292Y (en) * | 2008-07-11 | 2009-05-20 | 福建三元达通讯股份有限公司 | Digital frequency selection optical fiber station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102694596A (en) * | 2012-06-28 | 2012-09-26 | 武汉虹信通信技术有限责任公司 | Method for transmitting wireless signal by using FTTH (Fiber To The Home) system |
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| WO2015024453A1 (en) * | 2013-08-20 | 2015-02-26 | 烽火通信科技股份有限公司 | Ftth network based optical fiber, and wireless hybrid access system and hybrid access method |
| CN103581773A (en) * | 2013-10-31 | 2014-02-12 | 烽火通信科技股份有限公司 | Multi-service access system and method based on PON |
| CN104065413A (en) * | 2014-07-10 | 2014-09-24 | 中邮科通信技术股份有限公司 | Digital multi-medium transmission to-the-home covering system |
| CN105553528A (en) * | 2014-10-31 | 2016-05-04 | 罗森伯格技术（昆山）有限公司 | Multi-network integration access system based on LTE |
| CN105553528B (en) * | 2014-10-31 | 2022-06-17 | 罗森伯格技术（昆山）有限公司 | Multi-network integration access system based on LTE |
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Application publication date: 20120627 |