CN201418139Y - Multifunctional bidirectional optical receiver - Google Patents
Multifunctional bidirectional optical receiver Download PDFInfo
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- CN201418139Y CN201418139Y CN2009200218059U CN200920021805U CN201418139Y CN 201418139 Y CN201418139 Y CN 201418139Y CN 2009200218059 U CN2009200218059 U CN 2009200218059U CN 200920021805 U CN200920021805 U CN 200920021805U CN 201418139 Y CN201418139 Y CN 201418139Y
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Abstract
The utility model discloses a multifunctional bidirectional optical receiver, which overcomes shortages that the existing optical-to-electrical conversion equipment can only restore one type of data in optical signals to electric signals but can not restore various types of data in optical signals to electric signals simultaneously, can receive IP data, TV data and PSTN voice data in optical fibersignals simultaneously and convert all the data into relative RF signals, and is strong in function, low in cost and convenient in using and maintenance. The structure of the multifunctional bidirectional optical receiver includes that the optical receiver comprises an IPQAM modulation module, an ONU optical network unit module, an EOC module, an optical receiver module and a frequency mixing/dividing module, wherein the IPQAM modulation module is connected with the frequency mixing/dividing module unidirectionally, the ONU optical network unit module is connected with the EOC module bilaterally, the EOC module is connected with the frequency mixing/dividing module bilaterally, the optical receiver module is connected with the frequency mixing/dividing module unidirectionally, the IPQAM modulation module is connected with a network interface, the ONU optical network unit module is connected with an optical signal interface, the optical receiver module is connected with an optical signal interface, and the frequency mixing/dividing module is connected with an RF interface.
Description
Technical Field
The utility model belongs to the technical field of digital television (contain cable, satellite, ground, mobile digital TV and IPTV etc.) and mobile multimedia technology, especially, relate to a transmission equipment of coaxial hybrid network of optic fibre (HFC) is multi-functional two-way optical receiver promptly.
Background
The cable television network has more than 9.4 hundred million users all over the world at present, the national coverage of the cable television network in China is 50 percent since the early development of 90 s, and the number of television family users is more than 8000 ten thousand, so that the cable television network becomes the first cable television network in the world. With the rapid development of computer technology, communication technology, network technology, cable television technology and multimedia technology, especially under the push of the Internet, users have put forward new requirements on information exchange and network transmission, and hope that the call integrating the CATV network, the computer network and the telecommunication network is higher and higher. The scheme of establishing an economical and practical broadband integrated information service network by utilizing the HFC network structure is generated.
EPON (ethernet passive optical network) is a new type of fiber access network technology that provides multiple services over ethernet using point-to-multipoint architecture, passive fiber transmission. The method adopts the PON technology in the physical layer, uses the Ethernet protocol in the link layer, utilizes the topological structure of the PON to realize the access of the Ethernet, and integrates the advantages of low cost, high bandwidth, strong expansibility, compatibility with the existing Ethernet and the like of the PON technology and the Ethernet technology. Based on the numerous advantages of EPON, it has become one of the most efficient methods for bidirectional transformation of HFC networks and broadband access.
In the reformation of an HFC network based on EPON, the front end of the HFC network converts IP data, TV data, PSTN voice data and other electrical signals into optical signals through protocol conversion and photoelectric conversion equipment and transmits the optical signals in optical fibers, and the optical signals are restored into original electrical signals through the photoelectric conversion equipment at the terminal of the HFC network. The photoelectric conversion device is an important device for data transmission in an HFC network, but when the photoelectric conversion device in the prior art recovers an optical signal into an electrical signal, one photoelectric conversion device can only recover one of TV data, IP data and PSTN voice data in the optical signal into the electrical signal, and cannot simultaneously recover the TV data, IP data and PSTN voice data in the optical signal into the electrical signal.
Disclosure of Invention
The utility model aims at solving present photoelectric conversion equipment and can only becoming the signal of telecommunication with a kind of data recovery in the light signal, can not resume into the shortcoming of the signal of telecommunication with multiclass data in the light signal simultaneously, the IP data that has proposed one kind can receive simultaneously in the optical fiber signal, TV data and PSTN voice data to change it into corresponding RF signal's multi-functional two-way optical receiver, it has the function reinforce, and is with low costs, advantages such as use maintenance convenience.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multifunctional bidirectional optical receiver comprises an IPQAM modulation module, an ONU optical network unit module, an EOC module, an optical receiver module and a frequency mixing/dividing module; wherein,
the IPQAM modulation module is in bidirectional communication connection with the wavelength division multiplexing equipment, receives IP data and modulates the IP data into an RF signal, meanwhile, the IPQAM modulation module sends self running state information to the wavelength division multiplexing equipment, and the wavelength division multiplexing equipment uploads the running state information to the front end of an HFC network through the HFC network; the IPQAM modulation module is also in one-way communication connection with the frequency mixing/frequency dividing module and transmits the modulated RF signal to the frequency mixing/frequency dividing module;
the ONU optical network unit module is in bidirectional communication connection with the wavelength division multiplexing equipment, and is also in bidirectional communication connection with the EOC module, and the EOC module is in bidirectional communication connection with the frequency mixing/frequency dividing module; the ONU optical network unit module converts the received optical signal into an IP signal and sends the IP signal to the EOC module; the EOC module modulates the received IP data into an RF signal and transmits the RF signal to the frequency mixing/frequency dividing module;
the optical receiver module is in one-way communication connection with the wavelength division multiplexing equipment, and is also in one-way communication connection with the frequency mixing/frequency dividing module; the optical receiver module performs photoelectric conversion on the received optical signal, converts the optical signal into an RF signal and outputs the RF signal to the frequency mixing/frequency dividing module;
the frequency mixing/frequency dividing module mixes the received RF signals transmitted by the IPQAM modulation module, the EOC module and the optical receiver module to form a path of RF signal, outputs the path of RF signal to the HFC network and further sends the RF signal to the terminal equipment of the HFC network;
and meanwhile, the frequency mixing/frequency dividing module also receives uplink RF data of the HFC terminal equipment through the HFC network, the uplink RF data is sent to the frequency mixing/frequency dividing module, the frequency mixing/frequency dividing module divides the frequency of the received uplink RF data, transmits the frequency divided uplink RF data to the EOC module and then transmits the frequency divided uplink RF data to the ONU optical network unit module, the ONU optical network unit module converts IP data transmitted by the EOC module into optical signals and then transmits the optical signals to the wavelength division multiplexing equipment, and then the optical signals enter the HFC network and transmit the data to front-end equipment of the HFC network, so that the data bidirectional transmission of the HFC network is completed.
The IPQAM modulation module is in bidirectional communication with the wavelength division multiplexing equipment through a network interface,
and the ONU optical network unit module and the optical receiver module are respectively connected with the wavelength division multiplexing equipment through respective optical signal interfaces.
The frequency mixing/dividing module is connected with the HFC network through an RF interface.
In an HFC network, after optical signals in optical fibers pass through wavelength division multiplexing equipment, the signals in the optical fibers are divided into 3 paths according to different wavelengths, one path of signals is accessed to a network interface of a multifunctional bidirectional optical receiver and then is accessed to an IPQAM modulation module, and the other two paths of signals are respectively accessed to an ONU optical network unit module and an optical receiver module through the optical signal interface of the optical receiver. The IPQAM module modulates the received IP data into an RF signal and outputs the RF signal to the frequency mixing/dividing module, and meanwhile, the IPQAM module uploads the running state information of the IPQAM module to network management equipment at the front end of the HFC through a network interface of an optical receiver; the optical receiver module performs photoelectric conversion on the received optical signal, converts the optical signal into an RF signal and outputs the RF signal to the frequency mixing/frequency dividing module; the ONU optical network unit module converts the received optical signal into an IP signal and transmits the IP signal to the EOC module, and the EOC module modulates the received IP data into an RF signal and transmits the RF signal to the frequency mixing/frequency dividing module; the frequency mixing/frequency dividing module mixes the received RF signals transmitted by the IPQAM modulation module, the EOC module and the optical receiver module to form a path of RF signal, and the RF signal is output to the HFC network through the RF interface and further sent to the terminal equipment of the HFC network. Meanwhile, the multifunctional bidirectional optical receiver can also receive data of HFC terminal equipment and upload the data to the front end of an HFC network. Uplink data enters a frequency mixing/dividing module of the optical receiver through an RF interface of the optical receiver, the frequency mixing/dividing module divides the frequency of the received data and transmits the uploaded data to an EOC module and then to an ONU optical network unit module, the ONU optical network unit module converts IP data transmitted by the EOC module into optical signals and then transmits the optical signals to wavelength division multiplexing equipment through an optical signal interface of a multifunctional bidirectional optical receiver, and then the optical signals enter an optical fiber of an HFC network and upload the data to front-end equipment of the HFC network, so that the bidirectional data transmission of the HFC network is realized.
The utility model has the advantages that: the multifunctional optical receiver has the advantages of strong function, low cost, convenient use and maintenance and bidirectional function.
Drawings
Fig. 1 is a schematic structural diagram of the multifunctional optical receiver of the present invention.
The optical network unit comprises 1 wavelength division multiplexing equipment, 2 IPQAM modulation modules, 3 ONU optical network unit modules, 4 optical receiver modules, 5 EOC modules, 6 frequency mixing/frequency dividing modules and 7 multifunctional bidirectional optical receivers.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
The accompanying drawings, which are set forth herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for the purpose of illustrating the invention and are not intended to constitute an undue limitation on the invention.
Fig. 1 is a structural schematic diagram of a multifunctional bidirectional optical receiver 7, it includes IPQAM modulation module 2, ONU optical network unit module 3, EOC module 5, optical receiver module 4 and mixing/frequency dividing module 6, wherein, IPQAM modulation module 2 and mixing/frequency dividing module 6 are connected in one-way, ONU optical network unit module 3 and EOC module 5 are connected in two-way, EOC module 5 and mixing/frequency dividing module 6 are connected in two-way, optical receiver module 4 and mixing/frequency dividing module 6 are connected in one-way, while IPQAM modulation module 2 and network interface connection, ONU optical network unit module 3 and corresponding optical signal interface connection, optical receiver module 4 and corresponding optical signal interface connection, mixing/frequency dividing module 6 and RF interface connection.
In the HFC network, after optical signals in the optical fiber pass through the wavelength division multiplexing device 1, the signals in the optical fiber are divided into 3 paths according to the difference of the wavelength, one path is accessed to the network interface of the multifunctional bidirectional optical receiver 7 and then accessed to the IPQAM modulation module 2, and the other two paths of signals pass through two optical signal interfaces of the multifunctional bidirectional optical receiver 7 and are respectively accessed to the ONU optical network unit module 3 and the optical receiver module 4. The IPQAM modulation module 2 modulates the received IP data into an RF signal and outputs the RF signal to the frequency mixing/dividing module 6, and meanwhile, the IPQAM modulation module 2 uploads the running state information of the IPQAM modulation module to network management equipment at the front end of the HFC through a network interface of a multifunctional bidirectional optical receiver 7; the optical receiver module 4 performs photoelectric conversion on the received optical signal, converts the optical signal into an RF signal, and outputs the RF signal to the frequency mixing/dividing module 6; the ONU optical network unit module 3 converts the received optical signal into an IP signal and transmits the IP signal to the EOC module 5, and the EOC module 5 modulates the received IP data into an RF signal and transmits the RF signal to the frequency mixing/frequency dividing module 6; the frequency mixing/dividing module 6 mixes the received RF signals transmitted by the IPQAM modulation module 2, the EOC module 5, and the optical receiver module 4, and then converts the mixed RF signals into a path of RF signals, which are output to the HFC network through the RF interface, and further sent to the terminal device of the HFC network. Meanwhile, the multifunctional bidirectional optical receiver 7 can also receive data of the HFC terminal device and upload the data to the HFC network front end. Uplink data enters a frequency mixing/frequency dividing module 6 of the multifunctional bidirectional optical receiver 7 through an RF interface of the multifunctional bidirectional optical receiver 7, the frequency mixing/frequency dividing module 6 divides the frequency of the received data, and transmits the uploaded data to an EOC module 5 and then to an ONU optical network unit module 3, the ONU optical network unit module 3 converts IP data transmitted from the EOC module 5 into optical signals and then uploads the optical signals to a wavelength division multiplexing device 1 through an optical signal interface of the multifunctional bidirectional optical receiver 7, and then enters an optical fiber of an HFC network and uploads the data to a front-end device of the HFC network, and the bidirectional data transmission of the HFC network is realized.
Claims (4)
1. A multifunctional bidirectional optical receiver is characterized by comprising an IPQAM modulation module, an ONU optical network unit module, an EOC module, an optical receiver module and a frequency mixing/dividing module; wherein,
the IPQAM modulation module is in bidirectional communication connection with the wavelength division multiplexing equipment, receives IP data and modulates the IP data into an RF signal, meanwhile, the IPQAM modulation module sends self running state information to the wavelength division multiplexing equipment, and the wavelength division multiplexing equipment uploads the running state information to the front end of an HFC network through the HFC network; the IPQAM modulation module is also in one-way communication connection with the frequency mixing/frequency dividing module and transmits the modulated RF signal to the frequency mixing/frequency dividing module;
the ONU optical network unit module is in bidirectional communication connection with the wavelength division multiplexing equipment, and is also in bidirectional communication connection with the EOC module, and the EOC module is in bidirectional communication connection with the frequency mixing/frequency dividing module; the ONU optical network unit module converts the received optical signal into an IP signal and sends the IP signal to the EOC module; the EOC module modulates the received IP data into an RF signal and transmits the RF signal to the frequency mixing/frequency dividing module;
the optical receiver module is in one-way communication connection with the wavelength division multiplexing equipment, and is also in one-way communication connection with the frequency mixing/frequency dividing module; the optical receiver module performs photoelectric conversion on the received optical signal, converts the optical signal into an RF signal and outputs the RF signal to the frequency mixing/frequency dividing module;
the frequency mixing/frequency dividing module mixes the received RF signals transmitted by the IPQAM modulation module, the EOC module and the optical receiver module to form a path of RF signal, outputs the path of RF signal to the HFC network and further sends the RF signal to the terminal equipment of the HFC network;
and meanwhile, the frequency mixing/frequency dividing module also receives uplink RF data of the HFC terminal equipment through the HFC network, the uplink RF data is sent to the frequency mixing/frequency dividing module, the frequency mixing/frequency dividing module divides the frequency of the received uplink RF data, transmits the frequency divided uplink RF data to the EOC module and then transmits the frequency divided uplink RF data to the ONU optical network unit module, the ONU optical network unit module converts IP data transmitted by the EOC module into optical signals and then transmits the optical signals to the wavelength division multiplexing equipment, and then the optical signals enter the HFC network and transmit the data to front-end equipment of the HFC network, so that the data bidirectional transmission of the HFC network is completed.
2. The multifunctional bidirectional optical receiver of claim 1 wherein said IPQAM modulation module is in bidirectional communication with a wavelength division multiplexing device via a network interface.
3. The multifunctional bidirectional optical receiver of claim 1 wherein said ONU optical network unit module and optical receiver module are each connected to a wavelength division multiplexing device via a respective optical signal interface.
4. The multifunctional bi-directional optical receiver of claim 1 wherein said mixer/divider module is connected to an HFC network via an RF interface.
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| CN2009200218059U CN201418139Y (en) | 2009-04-27 | 2009-04-27 | Multifunctional bidirectional optical receiver |
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| CN2009200218059U CN201418139Y (en) | 2009-04-27 | 2009-04-27 | Multifunctional bidirectional optical receiver |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011144075A2 (en) * | 2011-05-25 | 2011-11-24 | 华为技术有限公司 | Internet data transmission apparatus, transmission line and ethernet over coaxial-cable device |
| CN102480365A (en) * | 2010-11-26 | 2012-05-30 | 中国科学院声学研究所 | System and method for realizing unified multicast |
| CN102572585A (en) * | 2010-12-08 | 2012-07-11 | 中国科学院声学研究所 | Method and system for high speed and parallel data reception and processing |
| CN103780282A (en) * | 2012-10-19 | 2014-05-07 | 上海斐讯数据通信技术有限公司 | EOC terminal and data transmission system and method |
| CN105611323A (en) * | 2015-12-23 | 2016-05-25 | 南京爱布谷网络科技有限公司 | EOC broadband and wire television service co-cable access system and spectrum allocation method |
-
2009
- 2009-04-27 CN CN2009200218059U patent/CN201418139Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480365A (en) * | 2010-11-26 | 2012-05-30 | 中国科学院声学研究所 | System and method for realizing unified multicast |
| CN102480365B (en) * | 2010-11-26 | 2014-01-08 | 中国科学院声学研究所 | System and method for realizing unified multicast |
| CN102572585A (en) * | 2010-12-08 | 2012-07-11 | 中国科学院声学研究所 | Method and system for high speed and parallel data reception and processing |
| CN102572585B (en) * | 2010-12-08 | 2013-10-16 | 中国科学院声学研究所 | Method and system for high speed and parallel data reception and processing |
| WO2011144075A2 (en) * | 2011-05-25 | 2011-11-24 | 华为技术有限公司 | Internet data transmission apparatus, transmission line and ethernet over coaxial-cable device |
| WO2011144075A3 (en) * | 2011-05-25 | 2012-04-26 | 华为技术有限公司 | Internet data transmission apparatus, transmission line and ethernet over coaxial-cable device |
| CN103780282A (en) * | 2012-10-19 | 2014-05-07 | 上海斐讯数据通信技术有限公司 | EOC terminal and data transmission system and method |
| CN103780282B (en) * | 2012-10-19 | 2017-12-05 | 上海斐讯数据通信技术有限公司 | A kind of data transmission method |
| CN105611323A (en) * | 2015-12-23 | 2016-05-25 | 南京爱布谷网络科技有限公司 | EOC broadband and wire television service co-cable access system and spectrum allocation method |
| CN105611323B (en) * | 2015-12-23 | 2018-10-23 | 南京爱布谷网络科技有限公司 | The broadbands EOC and cable television services are total to cable access system and frequency spectrum distributing method |
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG TAIXIN ELECTRONIC CO., LTD. Free format text: FORMER NAME: SHANDONG TAIXIN ELECTRONICS CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Xinluo Avenue high tech Zone of Ji'nan City, Shandong province 250101 silver bearing No. 2008 building 1-501-1 Patentee after: Shandong Taixin Electronics Co., Ltd. Address before: Lixia District, Shandong city of Ji'nan Province Cultural Road 250012 No. 13 Haichen building 6 floor Patentee before: Shandong Taixin Electronics Co., Ltd. |
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Granted publication date: 20100303 Termination date: 20170427 |