Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (3): 66-69.doi: 10.13190/jbupt.200703.66.134

• Papers • Previous Articles     Next Articles

A Novel P_Cycle Protection Algorithm for Dual Link Failures in Mesh Optical Networks

ZANG Yun-hua1 , LI Jian1 ,ZHANG Jie1 Gu Wan-yi1 ZHENG Lu-di2   

  1. 1. Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876,China ; 2.Bell Labs Research China for Lucent Technologies, Beijing 100080, China
  • Received:2006-07-28 Revised:2006-12-15 Online:2007-06-30 Published:2007-06-30
  • Contact: ZANG Yun-hua

Abstract:

In optical networks with mesh topology, two links in the network may fault at the same time. The way to protect the dual failures with p_Cycles was analyzed, and the configuration strategy of p_Cycles in mesh networks with at least 3-degrees was then discussed. Furthermore, a heuristic algorithm based on the distributing of the working resource and the effective straddling links was proposed. And we simulated our proposed algorithm by OPNET Modeler in COST239 network under static traffic model. The simulation results show that our proposed algorithm has shorter restore time and lower capacity redundancy.

Key words: mesh optical network, dual link failure, protection, p_Cycle, effective stride link

CLC Number: