Method and system for transmitting signal between radio frequency unit and base station

A signal transmission system and radio frequency unit technology, applied in the field of communication, can solve problems such as the shortage of optical fibers, achieve the effect of reducing investment costs, surpassing competitors, and reducing investment

Inactive Publication Date: 2008-07-30
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a signal transmission method and system between a radio frequency unit and a base station, which can solve the problem of shortage of optical fibers for long-distance transmission

Method used

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  • Method and system for transmitting signal between radio frequency unit and base station
  • Method and system for transmitting signal between radio frequency unit and base station

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Embodiment 1

[0034] Please refer to Figure 4. Firstly, the wavelength conversion module is designed in the system, so that the baseband pool and the radio remote module output the colored light wavelength λ 1 lambda 2 lambda 3 lambda 4 .

[0035] Secondly, in the downlink, a module is designed in the system to complete the function of multiplexing and demultiplexing, that is, at the sending place of the baseband pool, the λ 1 lambda 2 lambda 3 lambda 4 Four signals of different wavelengths are multiplexed into one signal and sent to the optical fiber; at the receiving end of the radio remote module, the signal in the optical fiber is divided into signals of different wavelengths required by the wave splitter, and output to the corresponding different modules for reception ; The uplink is the inverse process of the wavelength conversion of the downlink, so as to achieve bidirectional signal transmission.

[0036] Thirdly, a system monitoring module is designed in the system to monito...

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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 [0001] The invention relates to the technical field of communication, in particular to a method and system for signal transmission between a main base station and one or more remote radio frequency units through one or a pair of optical fibers. Background technique [0002] In the design of modern mobile communication networks, the networking method of separating the radio frequency part and the baseband part is often adopted, that is, the remote radio frequency unit method, which can reduce the number of base stations, increase the flexibility of networking, and reduce daily maintenance costs. . As shown in Figure 1, the schematic diagram of the position of the remote radio in the mobile communication network. With the improvement of base station technology, the separation of the radio frequency part and the baseband part has become a new configuration method. The radio frequency part and the baseband part may be separated by tens of meters. It may also be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02H04B10/12H04B10/08H04B10/2575
Inventor 田力
Owner ZTE CORP
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