Performance analysis of a packet prioritisation algorithm for optical-packet-switching networks
International Journal of Ad Hoc and Ubiquitous Computing
A latency-aware scheduling algorithm for all-optical packet switching networks with FDL buffers
Photonic Network Communications
International Journal of Communication Systems
Routing in Coloured Sparse Optical Tori by Using Balanced WDM and Network Sparseness
International Journal of Distributed Systems and Technologies
An analytical model for all-optical packet switching networks with finite FDL buffers
Photonic Network Communications
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We study optical fiber-delay-line buffer management schemes for supporting service differentiation with less complexity, with the objective of achieving ultra-high-speed packet forwarding in a photonic packet switch. We propose the vPBSO (Variable-length-packet-capable Partial Buffer Sharing with Overwriting) method, which is a prioritized buffer management scheme for providing DiffServ Assured Forwarding. This method can handle asynchronously arriving variable-length packets. vPBSO is based on a single queue, and its complexity is Oscr(p), where p is the number of priority classes. We show that vPBSO is effective when the arrival rate of higher priority packets is lower than that of lower priority packets, which is a likely situation in a prioritized system. vPBSO provides better performance than vPBS (an extension of partial buffer sharing) for high-priority packets, and the performance for low-priority packets is also better or at least almost the same. vPBSO provides service differentiation in the case of two or more priority classes in which the difference of packet loss probability in each class is made larger than one order of magnitude by appropriate tuning of thresholds