AN RWA ALGORITHM FOR CRITICAL LINK AVOIDANCE IN DWDM NETWORKS

초록

A major challenge in next generation backbone networks based on dense-wavelength division multiplexing (DWDM) is the provision of guaranteed QoS(Quality-of-Service) for a wide variety of multimedia applications. This paper proposes a new RWA(Routing and Wavelength Assignment) algorithm to provide more reliable QoS guarantees by consideration of the potential future network’s congestion status. This improves wavelength utilization by choosing a route that does not interfere too much with potential future connection requests. Simulation results show that the proposed RWA algorithm achieves a smaller blocking probability than dynamic routing that yields the best performance among previous RWA algorithms.