Abstract
In this paper, we develop a theoretical model to precisely analyze the service availability of networks with preconfigured cycles (-cycles). By considering the dependence among protection domains and all the scenarios when a lightpath is available, our model can estimate the service availability more precisely than those in previous work. Then, based on the availability analysis, we propose a service availability oriented -cycle configuration algorithm for dynamic elastic optical networks (EONs), namely, the number of relevant links (NRL)-based -cycle design algorithm (NRL--cycle). The simulations compare the proposed algorithm with two benchmark -cycle design algorithms that are based on the protection efficiency of -cycles. Simulation results show that the proposed algorithm can effectively improve the service availability in EONs while keeping the blocking probability almost unchanged.
© 2014 Optical Society of America
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