基于地址差额标记的光网络差别服务质量保证

Different Level Service-guaranteed Based on Address Difference Label Node in WDM Networks

提出了一种适用于哈密顿环保护(HCP)的地址差额标记(ADL)的光节点结构,并在此节点结构基础上实现了差别服务质量(QoS)的光网络保护策略。采用ADL光节点,保护机制可以在光层中直接完成,不需要光电转换。同时可实现对不同业务的 QoS保证,进一步减少了对于备用保护波长的要求。分析了ADL光节点下的HCP网络阻塞情况,讨论了不同保护资源下的网络路由阻塞率 Blocking- R和预保护资源不足造成的阻塞率Blocking -P以及它们之间的相互关联,并提出当 Wp/W=1 时基于 ADL的HCP网络才能获得有效的服务质量保证。

A new optical network architecture based on address difference label(ADL) was introduced. Under ADL node structure the recovery scheme is very simple and no need O-E converters. Further more, ADL-based optical node structure can achieve different level service-guaranteed in optical network. The performance with different spare resources was also analyzed in optical networks. Simulation results show that in ADL-based optical networks Wp (the protect wavelength number)/W (the available wavelength number) = 1 is an important necessary condition to realize effective protect.