In this paper, we develop an ILP model to formulate the RSA problem for the hybrid network coding based multicast services and the unicast services over the flexible optical network. The goal is to accommodate all hybrid services utilizing the minimum spectrum resources, considering the time delay constraint. For the multicast services, the possibility of network coding is considered, resulting the RSA problem more complicated. We also propose an efficient heuristic algorithm dedicated to solve the ILP model, which could flexibly provide the efficient solutions towards different types of services. The simulation experiments are performed to evaluate the efficiency of the proposed algorithm with different services ordering schemes in terms of different aspects.
['Xin Wang', 'Rentao Gu', 'Yuefeng Ji']
RSA for the hybrid unicast and network coding based multicast services over the flexible optical networks