Routing and Admission Control in the Multihop Wavelength-Division Optical Network

A wavelength-division optical vetwork (WON) is a multihop, multichannel lightwave network based on wavelength-division multiplexing. Its wavelength-selectable, multitransceiver stations can be tuned to form many different virtual topologies. We study in this paper routing and admission control in the WON. We review the performance of routing algorithms for store-and-forward, deflection, and detour routing as well as the priority access mechanism (PAM) for admission control. Finally, we address virtual-topology design, demonstrating how optimization algorithms, such as simulated annealing, can be employed to determine near-optimal topologies for specific routing protocols.