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Wireless access network system based on C-RAN

A wireless access network and line technology, applied in network planning, wireless communication, optical fiber radio, etc., can solve problems such as increasing system complexity and system stability risks, and achieve the effect of simplifying complexity and satisfying protection switching.

Active Publication Date: 2014-07-30
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to configure the optical switch at the outdoor RRU site, which will increase the complexity of the system and bring certain risks to the system stability

Method used

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  • Wireless access network system based on C-RAN

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Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 As shown, the C-RAN-based wireless access network system provided by the present invention includes a base station computer room and a plurality of planning sites respectively arranged in different locations outdoors.

[0019] The base station equipment room includes a plurality of baseband processing units 9 (BBU), equipment room wavelength converter (OTU) 5, equipment room optical switch 6 and a equipment room multiplexer / demultiplexer 10, and each baseband processing unit 9 passes through an equipment room optical wavelength converter 5 in turn. And an optical switch 6 in the equipment room is connected to the wave combiner and demultiplexer 10 in the equipment room. The optical switch 6 in the equipment room has the function of selective transmission and selective reception, and realizes line switching in protectio...

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Abstract

The invention discloses a wireless access network system based on a C-RAN. The wireless access network system based on the C-RAN comprises a base station room and multiple planning sites respectively arranged in different outdoor places, wherein multiple baseband processing units and one room multiplexer / demultiplexer are arranged in the base station room, and each baseband processing unit is connected to the multiplexer / demultiplexer through one room optical wavelength converter and one room optical switch. Each planning site comprises a site multiplexer / demultiplexer and a remote radio unit, wherein the remote radio unit is sequentially connected to the site multiplexer / demultiplexer through one site optical wavelength converter and one site optical coupler. The room multiplexer / demultiplexer is connected with the site multiplexer / demultiplexer through main and standby line optical fibers. When all or one of the main and standby line optical fibers breaks, lines are switched through the room optical switch. The wireless access network system adopts optical couplers at remote radio site receiving terminals, the complexity of outdoor design is effectively simplified, the system stability is improved, accordingly the risk is reduced, and the protection switching requirement is met.

Description

technical field [0001] The present invention relates to a wireless communication network, in particular to a C-RAN-based wireless access network system. Background technique [0002] In the communication network, with the advent of the LTE&4G era, the baseband unit of the wireless access network base station has changed from the original distributed deployment to the centralized deployment. The baseband unit and the remote radio frequency unit are physically separated, so it meets this requirement. The new radio access network architecture C-RAN is widely adopted. [0003] C-RAN is a green wireless access network architecture (Clean system) based on centralized processing, cooperative radio and real-time cloud computing architecture. Its essence is to achieve low cost, high bandwidth and flexible operation by reducing the number of base station equipment rooms, reducing energy consumption, adopting collaborative and virtualization technologies, realizing resource sharing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/18H04B10/2575
Inventor 韩恩钊袁振涛
Owner FENGHUO COMM SCI & TECH CO LTD
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