Abstract
As the size and the complexity of optical mesh networks grow, double-link
failures become more probable. To protect against double-link failures, we
generally have to provision more backup resources with respect to single-link
failures. To improve the resource efficiency, it is important to reduce backup
resources used for surviving double-link failures. In this paper, we investigate
some representative sharing schemes and propose an enhanced resource sharing
scheme with resource contention resolution for double-link failures in survivable
optical mesh networks. By fully taking into account the temporal and spatial
factors, our scheme can accommodate reasonable contention for sharing resources
and minimize backup resources for reservation with 100% protection guarantee.
Simulation results show that this enhanced resource sharing scheme can achieve
satisfactory performance in terms of resource utilization ratio and blocking
probability.
© 2012 IEEE
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