A novel optical network model for network burden release and congestion reduction based on passive optical network

He Li,Shanshan Lin,Hongxi Yin

doi:10.1177/1550147718807652

Abstract

In this article, a new optical network structure coping with network congestion is proposed, which is based on passive optical network, and adopts data storage devices coupled with optical line terminal to release network burden. It is shown by our network performance simulation that this network has many merits such as free-scale, fewer connections, larger clustering coefficient, and smaller average shortest path length in comparison to the passive optical network. The novel network structure can replace the far-end service connections with the near-end ones, reduce congestions in an optical network, and, furthermore, relieve traffic burden in optical backbone and metropolitan area networks.

Highlights

Optical networks are rapidly growing to accommodate the explosion in multiple traffic services introduced by new personal and enterprise applications, such as Internet access, telephone, and television service.[1]
To solve the network congestion problem, especially the congestion induced by the duplicate services, a new optical network structure is proposed in this article, named content server–aided passive optical network (CSA-PON)
The storage OLTE label (SOL) indicates the location of the optical line terminal-extended (OLTE) that store the requested contents, which is critical for data routing

Summary

Introduction

Optical networks are rapidly growing to accommodate the explosion in multiple traffic services introduced by new personal and enterprise applications, such as Internet access, telephone, and television service.[1]. To solve the network congestion problem, especially the congestion induced by the duplicate services, a new optical network structure is proposed in this article, named content server–aided passive optical network (CSA-PON). It is realized by adopting a high-capacity storage server to couple with optical line terminal (OLT) named optical line terminal-extended (OLTE). For duplicate services, the network can reduce the transmission times in the backbone network, cut down hop counts required by far-end connection, and relieve congestions in the optical backbone network and MAN. The performance evaluation of the proposed architecture is presented in section ‘‘Simulation analysis and discussion.’’ section ‘‘Conclusion and future work’’ concludes this work and outlines the possibilities for future work

Related works

The average shortest path length is defined as

Findings

Conclusion and future work