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电子学报  2004 

分层ASON网络中路由计算和连接管理策略的比较研究

, PP. 69-73

Keywords: 自动交换光网络,路由,连接管理,分层路由,源路由

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Abstract:

本文比较研究了分层结构自动交换光网络(ASON)中四种路由计算和连接管理策略:基于链路状态的分层路由和前向资源预留(LS-HRFR)、基于链路状态的源路由和前向资源预留(LS-SRFR)、基于本地信息的分层路由和沿路径探测、后向资源预留(P-HRBR)以及基于本地信息的源路由和沿路径探测、后向资源预留(P-SRBR).离散事件仿真的结果表明:采用基于本地信息进行路由计算并通过沿路径探测资源使用信息来选取空闲波长的策略(P-HRBR和P-SRBR)相对基于链路状态的路由计算和空闲波长选取策略(LS-HRFR和LS-SRFR)来说,在分层路由情况下,其对网络总阻塞率的改善微乎其微,但在源路由的情况下,其对网络总阻塞率的改善十分明显.

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