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OFDMA (orthogonal frequency division multiple access)-based fusion access network system

A technology of access network and core network, applied in the field of optical communication, to achieve the effect of expanding network structure, realizing seamless integration, good scalability and flexibility

Inactive Publication Date: 2012-08-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this solution is only an improvement to the metropolitan area network, and does not involve how to integrate with the access network

Method used

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  • OFDMA (orthogonal frequency division multiple access)-based fusion access network system
  • OFDMA (orthogonal frequency division multiple access)-based fusion access network system
  • OFDMA (orthogonal frequency division multiple access)-based fusion access network system

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Experimental program
Comparison scheme
Effect test

Embodiment

[0026] For the convenience of description, the relevant technical terms appearing in the specific implementation are explained first:

[0027]OFDM (Orthogonal Frequency Division Multiplexing): Orthogonal Frequency Division Multiplexing;

[0028] OFDMA (Orthogonal Frequency Division Multiple Access): Orthogonal Frequency Division Multiple Access;

[0029] CO (Central Office): Central Bureau;

[0030] CN(Central Node): central node;

[0031] RN (Remote Node): remote node;

[0032] FFT (Fast Fourier Transform): Fast Fourier Transform;

[0033] IFFT (Inverse Fast Fourier Transform): Inverse Fast Fourier Transform;

[0034] PD (Photodiode): Photodiode;

[0035] RSOA (Reflective Semiconductor Optical Amplifier): reflective semiconductor optical amplifier;

[0036] figure 1 It is an architecture diagram of a specific implementation mode of the OFDMA-based converged access network system of the present invention.

[0037] In this example, if figure 1 As shown, an OFDMA single...

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Abstract

The invention discloses an OFDMA (orthogonal frequency division multiple access)-based fusion access network system. A core network is connected with a user terminal by means of an OFDMA single-fiber ring and a plurality of OFDMA single-fiber trees, so that a metropolitan area network and an access network are effectively fused together. Simultaneously, when the OFDMA single-fiber ring is practically configured, central nodes in corresponding number can be increased in an existing OFDMA single-fiber ring according to practical needs of the user terminal, and addition by the means has no influence on normal operation of other configured central nodes, therefore, the OFDMA-based fusion access network system is excellent in expansibility and flexibility, and can adapt to the trend of ever-increasing network information capacity in modern society.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and more specifically relates to an OFDMA-based fusion access network system. Background technique [0002] In recent years, with the rapid increase of communication capacity, increasingly rich communication services, and flexible and diverse communication application requirements, the traditional independent communication mode of the metropolitan area network and the access network can no longer adapt to the current situation of the rapid development of the communication network. It cannot meet people's huge demand for ever-expanding network information, so finding a new network architecture that can solve the above problems has become a major challenge for the future metropolitan area network and access technology. As the new generation of information network industry is listed as a key strategic emerging industry in the "Twelfth Five-Year Plan", China has formulated a national br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04B10/12H04B10/25
Inventor 张崇富张琼丽陈晨
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA