WDM网络中低开销的动态1+N专有分段保护策略

A low-cost dynamical segmented 1+N dedicated protection mechanism in WDM network

针对现有波分复用(WDM)网络保护机制倒换时间长、资源消耗较大的问题,提出了一种低开销的动态1+N专有分段保护(DSDP)策略,能够根据当前网络资源耗费情况动态地确定需要保护的网元,采用线性编码方法,利用单个工作路径对多个工作路径进行专有保护。仿真验证表明,本文策略能极大地降低用于保护的网络资源消耗,同时能有效地利用光网络资源。

In order to solve the issues of long switching time and high resource consumption for protection in wavelength division multiplexing （WDM） network, an effective low-cost dynamical segmented 1 ＋ N dedicated protection strategy is introduce＆ According to resource consumption condition, the strategy can dynamically determine the segments for protection. Based on network coding, a single backup path can be established to provide dedicated 1＋ N protection for multiple working paths. Simulations show that the strategy can reduce the wavelength consumption. Moreover, the strategy also can use the network resources effectively.