CN101232345A - Method and system for transmitting signal between radio frequency unit and base station - Google Patents
Method and system for transmitting signal between radio frequency unit and base station Download PDFInfo
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- CN101232345A CN101232345A CNA2008100650184A CN200810065018A CN101232345A CN 101232345 A CN101232345 A CN 101232345A CN A2008100650184 A CNA2008100650184 A CN A2008100650184A CN 200810065018 A CN200810065018 A CN 200810065018A CN 101232345 A CN101232345 A CN 101232345A
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Abstract
The invention discloses a signal transmission method and a system between a radio frequency unit and a base station, the system includes a base band pool, a radio remote module and a wavelength division multiplexing module; the base band pool and the radio remote module carry out the communication by the wavelength division multiplexing module, the wavelength division multiplexing module carries out the wavelength conversion and the wave coupling of the received signal, after that, the signal is output to a line optical fiber, and the line signal is transmitted after the wavelength division. The system and the method which are provided by the invention adopt the WDM technique to reduce the investment on the optical fiber aspect of the operators in the construction of a mobile network to a certain extent by the problem of long-distance transmitting the signal by one pair/one optical fiber, so as to reduce the investment cost; if the operators have part of the past optical fibers, the optical fibers can be fully utilized for the fast network assembly, so as to achieve the purpose of exceeding the competitors.
Description
Technical field
The present invention relates to communication technique field, relate in particular between a dominant base and one or more long-distance radio frequency unit the method and system that carries out the signal transmission by one or a pair of optical fiber.
Background technology
In the present mobile communication Network Design, the networking mode that has often adopted radio frequency part to separate with baseband portion, promptly radio frequency unit zooms out mode, can reduce the number that is provided with of base station like this, increases the flexibility of networking, reduces the regular maintenance cost.Radio frequency zooms out the present position schematic diagram in the mobile communications network as shown in Figure 1, raising along with station technology, radio frequency part and baseband portion be separated into a kind of new configuration mode, radio frequency part and baseband portion may be separated by tens meters, also may be separated by several kilometers even tens kilometers; May be that the radio-frequency module that a physics zooms out has one to be connected or several connection with baseband portion.
As shown in Figure 2, along with the continuous increase of service bandwidth, the radio frequency unit that is zoomed out and the communication bandwidth of base station portion increase thereupon, are used for the also increase thereupon of number of fibers that signal zooms out, there are several needs to zoom out the radio-frequency module of transmission, just need several groups of optical fiber and use with it.And the number of fibers of one-time investment is limited, these optical fiber can be used in the various fields and business of operator, if the radio frequency of mobile communication zooms out quantity and the path that need plan optical fiber again, this will cause the resource excess waste to operator, operation cost also increases thereupon, finally causes profit to descend.
Summary of the invention
Technical problem to be solved by this invention provides method for transmitting signals and the system between a kind of radio frequency unit and the base station, can solve the optical fiber shortage problem that long distance zooms out transmission.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Signal transmission system between a kind of radio frequency unit and the base station comprises baseband pool, radio frequency remoto module, also comprises WDM (Wavelength Division Multiplexing, wavelength division multiplexing) module;
Described baseband pool and radio frequency remoto module are by the WDM module communication, and the WDM module exports circuit optical fiber to after received signal is carried out wavelength Conversion and closes ripple, will transmit behind the line signal partial wave again.
Wherein, described WDM module comprises the wavelength Conversion module, closes the partial wave module, described wavelength Conversion module is used for the wavelength Conversion of the signal of the signal of baseband pool or radio frequency remoto module is become specific wavelength, describedly closes the partial wave module to be used for the signal multiplexing after the described conversion be a signal or the signal that is separated into different wave length.
Wherein, also comprise the system monitoring module, described system monitoring module is used for whole network is carried out centralized monitor, also is used to monitor the performance state of radio frequency remoto module, and radio frequency remoto module is controlled.
Wherein, also comprise amplifier, described amplifier is used for when long-distance transmissions line signal being carried out processing and amplifying.
Method for transmitting signals between a kind of radio frequency unit and the base station may further comprise the steps:
At down link:
A: after the signal of baseband pool enters the WDM module, the wavelength Conversion of described signal is become the specific wavelength of WDM regulation, signal is sent into to close again and exported to circuit optical fiber after the partial wave module is closed ripple by the wavelength Conversion module;
B: before entering the far end radio frequency far-pulling module, earlier the signal in the circuit optical fiber is separated by closing the partial wave module, again the signal of separator well is sent into radio frequency remoto module;
In up link:
A: after the signal of radio frequency remoto module enters the WDM module, the wavelength Conversion of described signal is become the specific wavelength of WDM regulation, signal is sent into to close again and exported to circuit optical fiber after the partial wave module is closed ripple by the wavelength Conversion module;
B: before entering baseband pool, earlier the signal in the circuit optical fiber is separated by closing the partial wave module, again the signal of separator well is sent into baseband pool.
Wherein, the wavelength Conversion in the described up link is the inverse process of the wavelength Conversion in the down link.
The present invention has following beneficial effect:
System and method provided by the invention utilizes WDM technology, transmits the problem of multiple signals at a distance by a pair of/one optical fiber, the investment when reducing the construction mobile network of operator to a certain extent aspect optical fiber, thus reduce cost of investment; If there is part optical fiber in the past in operator, can make full use of these optical fiber quickly networkings, reach the purpose that surmounts the rival.
Description of drawings
Fig. 1 is a radio frequency remoto module present position schematic diagram in the existing mobile communication network;
Fig. 2 is existing information transmission system structure chart;
Fig. 3 is an information transmission system structure chart of the present invention;
Fig. 4 is the system construction drawing of the embodiment of the invention 1.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
See also shown in Figure 3, down link:
(1) after the signal of baseband pool enters the WDM module, the wavelength Conversion of original signal is become the G.692/694.2 specific wavelength of WDM regulation, afterwards signal is sent into and closed partial wave module (OM/OD) and close ripple, export circuit optical fiber afterwards to by the wavelength Conversion module.
(2) before entering the far end radio frequency far-pulling module, earlier the signal in the circuit optical fiber is separated by closing partial wave module (OM/OD), again the signal of separator well is sent into radio frequency remoto module.
Up link:
1. after the signal of radio frequency remoto module enters the WDM module, the wavelength Conversion of original signal is become the G.692/694.2 specific wavelength of WDM regulation by the wavelength Conversion module, afterwards signal is sent into and closed partial wave module (OM/OD) and close ripple, export circuit optical fiber again to.
2. before signal enters baseband pool, earlier the signal in the circuit optical fiber is separated by closing partial wave module (OM/OD), again the signal of separator well is sent into baseband pool and handle.
Among the present invention,, the WDM functional module can be bound design as the assembly of mobile base station product, unified configuration, the unified maintenance in baseband pool and far end radio frequency far-pulling module part.
Embodiment 1:
Consult shown in Figure 4ly clearly, at first, design wavelength modular converter in the system makes baseband pool and radio frequency remoto module output colourama wavelength λ
1λ
2λ
3λ
4
Secondly, at down link, module of design is finished the function of closing partial wave in the system, promptly in baseband pool transmission place by wave multiplexer with λ
1λ
2λ
3λ
4Four different wave length signal multiplexings become a signal to send in the optical fiber; By channel-splitting filter road signal in the optical fiber is divided into the signal of needed different wave length in radio frequency remoto module reception place, outputs to corresponding disparate modules and receive; Up link is the inverse process of the wavelength conversion of down link, transmits thereby reach two-way signal.
Once more, the design system monitoring module carries out centralized monitor to whole network in system, for guaranteeing the bandwidth of supervisory control system, can dispose separately and use a wavelength X
0Monitor channel as system, monitoring content comprises the transmitting optical power of laser and the received optical power of receiver, and link error code state etc. also can add the performance state monitoring to radio frequency remoto module, can provide band outer control, improve the maintainability of system radio frequency remoto module.
If the distance that is zoomed out long (as surpassing 80 kms) can be added WDM equipment such as amplifier at signal sending end, and needn't be increased relatively costly radio frequency unit.
Among the present invention, WDM technology is a technology that has nothing to do with bearer service, and this technology only is responsible for business is sent to the appointed place, and be indifferent to professional speed, therefore specifying informations such as frame format, adopt WDM technology to there is no tangible influence for the upgrading of business.In future during system upgrade, only need to change radio frequency sends and receiver module supporting relevant device, WDM partly but needn't upgrade, and has reduced cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the signal transmission system between radio frequency unit and the base station comprises baseband pool, radio frequency remoto module, it is characterized in that, also comprises Wavelength division multiplexing module;
Described baseband pool is communicated by letter by Wavelength division multiplexing module with radio frequency remoto module, and Wavelength division multiplexing module exports circuit optical fiber to after received signal is carried out wavelength Conversion and closes ripple, will transmit behind the line signal partial wave again.
2. the signal transmission system between radio frequency unit as claimed in claim 1 and the base station, it is characterized in that, described Wavelength division multiplexing module comprises the wavelength Conversion module, closes the partial wave module, described wavelength Conversion module is used for the wavelength Conversion of the signal of the signal of baseband pool or radio frequency remoto module is become specific wavelength, describedly closes the partial wave module to be used for the signal multiplexing after the described conversion be a signal or the signal that is separated into different wave length.
3. the signal transmission system between radio frequency unit as claimed in claim 1 or 2 and the base station, it is characterized in that, also comprise the system monitoring module, described system monitoring module is used for whole network is carried out centralized monitor, also be used to monitor the performance state of radio frequency remoto module, radio frequency remoto module is controlled.
4. the signal transmission system between radio frequency unit as claimed in claim 3 and the base station is characterized in that, also comprises amplifier, and described amplifier is used for when long-distance transmissions line signal being carried out processing and amplifying.
5. the method for transmitting signals between radio frequency unit and the base station is characterized in that, may further comprise the steps:
At down link:
A: after the signal of baseband pool enters Wavelength division multiplexing module, the wavelength Conversion of described signal is become the specific wavelength of wavelength division multiplexing regulation, signal is sent into to close again and exported to circuit optical fiber after the partial wave module is closed ripple by the wavelength Conversion module;
B: before entering the far end radio frequency far-pulling module, earlier the signal in the circuit optical fiber is separated by closing the partial wave module, again the signal of separator well is sent into radio frequency remoto module;
In up link:
A: after the signal of radio frequency remoto module enters Wavelength division multiplexing module, the wavelength Conversion of described signal is become the specific wavelength of wavelength division multiplexing regulation, signal is sent into to close again and exported to circuit optical fiber after the partial wave module is closed ripple by the wavelength Conversion module;
B: before entering baseband pool, earlier the signal in the circuit optical fiber is separated by closing the partial wave module, again the signal of separator well is sent into baseband pool.
6. the method for transmitting signals between radio frequency unit as claimed in claim 5 and the base station is characterized in that, the wavelength Conversion in the described up link is the inverse process of the wavelength Conversion in the down link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100650184A CN101232345A (en) | 2008-01-04 | 2008-01-04 | Method and system for transmitting signal between radio frequency unit and base station |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100650184A CN101232345A (en) | 2008-01-04 | 2008-01-04 | Method and system for transmitting signal between radio frequency unit and base station |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263595A (en) * | 2011-08-29 | 2011-11-30 | 网拓(上海)通信技术有限公司 | Multi-network fiber access system |
| CN102647804A (en) * | 2011-02-21 | 2012-08-22 | 中国移动通信集团公司 | Distributed base station as well as data transmission method and device |
| CN104137454A (en) * | 2014-04-29 | 2014-11-05 | 华为技术有限公司 | Wireless communication system and radio frequency device |
| CN105450373A (en) * | 2014-08-22 | 2016-03-30 | 上海贝尔股份有限公司 | Method and apparatus for transmitting data in front backhaul network |
| CN106358321A (en) * | 2015-07-17 | 2017-01-25 | 上海贝尔股份有限公司 | Front-end return system for indoor wireless transmission |
| CN106571866A (en) * | 2015-10-10 | 2017-04-19 | 上海贝尔股份有限公司 | Wireless access system |
| CN108683457A (en) * | 2018-08-16 | 2018-10-19 | 华南师范大学 | A kind of automodulation multicarrier optical fiber wireless communications method and system |
| CN108683457B (en) * | 2018-08-16 | 2024-05-03 | 华南师范大学 | Self-modulation multi-carrier optical fiber wireless communication method and system |
-
2008
- 2008-01-04 CN CNA2008100650184A patent/CN101232345A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647804A (en) * | 2011-02-21 | 2012-08-22 | 中国移动通信集团公司 | Distributed base station as well as data transmission method and device |
| CN102647804B (en) * | 2011-02-21 | 2014-12-31 | 中国移动通信集团公司 | Distributed base station as well as data transmission method and device |
| CN102263595B (en) * | 2011-08-29 | 2016-04-20 | 罗森伯格（上海）通信技术有限公司 | Many nets merge Fiber Access System |
| CN102263595A (en) * | 2011-08-29 | 2011-11-30 | 网拓(上海)通信技术有限公司 | Multi-network fiber access system |
| CN104137454B (en) * | 2014-04-29 | 2019-01-08 | 华为技术有限公司 | Wireless communication system and radio-frequency device |
| CN104137454A (en) * | 2014-04-29 | 2014-11-05 | 华为技术有限公司 | Wireless communication system and radio frequency device |
| US10826610B2 (en) | 2014-04-29 | 2020-11-03 | Huawei Technologies Co., Ltd. | Wireless communications system and wireless radio frequency apparatus |
| US10270530B2 (en) | 2014-04-29 | 2019-04-23 | Huawei Technologies Co., Ltd. | Wireless communications system and wireless radio frequency apparatus |
| CN105450373A (en) * | 2014-08-22 | 2016-03-30 | 上海贝尔股份有限公司 | Method and apparatus for transmitting data in front backhaul network |
| CN106358321B (en) * | 2015-07-17 | 2019-12-13 | 上海诺基亚贝尔股份有限公司 | Front-end backhaul system for indoor wireless transmission |
| CN106358321A (en) * | 2015-07-17 | 2017-01-25 | 上海贝尔股份有限公司 | Front-end return system for indoor wireless transmission |
| CN106571866B (en) * | 2015-10-10 | 2019-09-17 | 上海诺基亚贝尔股份有限公司 | Wireless access system |
| CN106571866A (en) * | 2015-10-10 | 2017-04-19 | 上海贝尔股份有限公司 | Wireless access system |
| US10763965B2 (en) | 2015-10-10 | 2020-09-01 | Alcatel Lucent | Wireless access system |
| CN108683457A (en) * | 2018-08-16 | 2018-10-19 | 华南师范大学 | A kind of automodulation multicarrier optical fiber wireless communications method and system |
| CN108683457B (en) * | 2018-08-16 | 2024-05-03 | 华南师范大学 | Self-modulation multi-carrier optical fiber wireless communication method and system |
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Application publication date: 20080730 |