Dynamic Multicast Traffic Grooming for survivable WDM mesh networks

Survivable multicast traffic grooming (SMTG) is a promising approach to provide reliable and resource-efficient multi-granularity multicast services in mesh wavelength-division multiplexing (WDM) optical networks. In this paper, we focus on the problem of SMTG in WDM mesh networks and propose two models, named traffic grooming with shared protection (TG-SP) and traffic grooming with mixed band protection (TG-MBP) respectively. Basing on the two models, we present two algorithms, named multicast traffic grooming with segment protection (MTG-SP) and multicast traffic grooming with shared segment protection (MTG-SSP) respectively. From the simulation results, we can see that MTG-SSP algorithm has better performance than MTG-SP algorithm at the cost of higher computation complexity.