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一种基于时延约束的光网络共享通路保护机制

DOI: 10.3969/j.issn.1005-3026.2014.02.007, PP. 179-183

Keywords: 处理时延,传播时延,路由,波长分配,共享通路保护

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Abstract:

针对实时业务在光网络上的低时延和生存性要求,提出了一种基于时延约束的光网络共享通路保护机制.考虑到低时延要求,该机制将节点的负载和波长转换情况作为处理时延的影响因素,将链路的长度作为传播时延的影响因素,为实时业务请求设计了工作路由算法,并基于波长转换对时延的影响设计了相应的波长分配方案以减少波长转换次数.在生存性方面,基于共享通路保护机制和低时延要求设计了保护路由算法及相应的波长分配方案.仿真表明,该机制是可行和有效的.

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