多域光网络中采用条件风险分离度的生存性策略  

Survivability strategy with conditional risk disjunction degree in multi-domain optical networks

作　　者：赵季红[1] 曲桦[2] 王力[1] 毛宏宝[1] 

机构地区：[1]西安邮电学院通信工程系,陕西西安710061 [2]西安交通大学电信学院,陕西西安710048

出　　处：《通信学报》2010年第3期126-132,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60872058);国家高技术研究发展计划("863"计划)基金资助项目(2007AA01Z254;2009AA01Z213)~~

摘　　要：为了克服多域光网络中可扩展性约束的缺点,在多域光网络中提供区分业务的服务,提出一种采用条件风险分离度的多域光网络生存性策略。该策略给出条件风险分离度的概念,应用条件风险分离度实现域内虚链路映射,计算区分业务可靠性的端到端工作/保护路由对。仿真结果表明,所提生存性策略不仅能够区分业务可靠性,降低业务阻塞率,而且能够为业务提供平均高于其请求6.5%的可靠度。A survivability strategy based on CRDD（conditional risk disjunction degree） in multi-domain optical networks was provided in order to overcome the defect of the scalability constrained and provide differentiated service. The con- cept of CRDD was provided in this strategy, then the intra-domain virtual links reflection was achieved and the end-to-end work route and backup route to differentiate service reliability were computed with CRDD. The results show that the supported survivability strategy not only can differentiate the service reliability, reduce the blocking probability of service, but also can improve reliability for service requirement by 6.5% on average.

关 键 词：条件风险分离度 区分业务可靠性 多域光网络 网络生存性 

分 类 号：TN915[电子电信—通信与信息系统]