A method of segment protection based on p-cycle for dynamic multicast with limited-range wavelength converter in WDM network

作者：Liu Huan lin; Deng Lang; Chen Yong^*; Dai Hong yue; Wang Yang yang

来源：Optik, 2014, 125(16): 4517-4521.

DOI：10.1016/j.ijleo.2014.02.016

• WDM network
• p-Cycle protection
• Dynamic multicast
• ESHS algorithm
• Blocking probability

In the optical multicast network, node and link failures have very important influence on the network survivability which may lead to multiple destinations cannot receive data. Based on the wavelength layered-graph method, a method of efficiency-score based on heuristic algorithm of pre-configured cycle (p-Cycle) based-segment protection (ESHS) for dynamic multicast with limited-range wavelength conversion was presented in this paper. By finding the multicast tree segment protection, the total available p-Cycles are constructed for the multicast. Then we calculate each p-Cycle efficiency-score, the highest efficient-score p-Cycle is selected as the multicast route protection p-Cycle. The simulation results show that the ESHS can get higher performance than the existing ESHT algorithm, in terms of multicast request blocking probability and wavelength utilization.

• 出版日期2014
• 单位重庆邮电大学