光网络P圈保护方法分析  

Method analysis of P-Cycle protection for optical network

作　　者：王杨杨[1] 江上 方强[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院重庆市光纤通信技术重点实验室,重庆400065

出　　处：《数字通信》2012年第6期12-14,46,共4页Digital Communications and Networks

基　　金：国家自然科学基金(NSFC61275077);重庆市教委项目(KJ110527)

摘　　要：在光网络中,节点和链路故障是光网络生存性的关键因素。P圈保护被认为是一种非常有前途的保护方式,有着高效、高速等特点。对光网络中的P圈保护单故障和多故障的策略和方式进行分析,并分析了基于树和基于段的光组播P圈保护策略。最后,指出P圈保护在未来光网络中的研究发展方向。In the optical networks,the node failure or link failure are the key factors of optical network survivability.With high efficiency and high speed,p-Cycle is regarded as a promising protection method.In this paper,the strategy and method of P-cy-cle protection against the single failure and multiple failures are analyzed.And analysis is also made of the p-Cycle protection of optical multicast based tree and segment.Finally,key issues and directions of future study in this area are pointed out.

关 键 词：光网络 P圈 生存性 保护 光组播 

分 类 号：TN929.1[电子电信—通信与信息系统]