Optical burst switching protocols for supporting QoS and adaptive routing

In this paper, we present a scheme for dynamic resource management using traffic descriptors. A priority multi-class scheme to support QoS on an optical network is defined. Unlike existing mechanisms that depend on buffers management and scheduling algorithms, our mechanism does not require any electronic buffering in the intermediate optical network nodes, which is greatly desired. The proposed scheme assigns different delay times to service classes in order to isolate higher priority from lower priority classes. We also develop a traffic model and an allocation wavelength model, and analyze the blocking probability of each class. Finally, we present a view of our scheme that allows the integration of optical packet switching to the optical burst switching. q 2003 Elsevier B.V. All rights reserved.