IEEE Transactions on Pattern Analysis and Machine Intelligence
Exploring the performance benefits of end-to-end path switching
Proceedings of the joint international conference on Measurement and modeling of computer systems
On Wavelength Assignment in Optical Burst Switched Networks
BROADNETS '04 Proceedings of the First International Conference on Broadband Networks
JumpStart: a just-in-time signaling architecture for WDM burst-switched networks
IEEE Communications Magazine
Optical burst switching: a new area in optical networking research
IEEE Network: The Magazine of Global Internetworking
Novel reinforcement learning-based approaches to reduce loss probability in buffer-less OBS networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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We investigate the concept of path switching in optical burst switched (OBS) networks and its potential to reducing the overall burst drop probability.With path switching, each source maintains a list of alternate paths to each destination, and uses information regarding the recent congestion status of the network links to rank the paths; it then transmits bursts along the least congested path. We present a suite of path switching strategies, each utilizing a different type of information regarding the link congestion status, and evaluate them using simulation. Our results demonstrate that, in general, path switching outperforms shortest path routing, and, depending on the path strategy involved, the network topology, and the traffic pattern, this improvement can be significant. We also present a new framework for the development of hybrid path switching strategies, which make routing decisions based on a weighted combination of the decisions taken by several independent path switching strategies. We present two instances of such hybrid strategies, one that assigns static weights and one that dynamically adjusts the weights based on feedback from the network.