OPS Networks

Future networks require both bandwidth and Quality of Service (QoS) because of ever-increasing number of Internet users and growing number of real-time applications. Thus, having a QoS-capable all-optical network appears to be the sole approach for transporting the traffic in future networks. Due to its finest granularity, OPS (Optical Packet Switching) can efficiently utilize the huge bandwidth provided by all-optical networking. This book develops a new framework to manage the bandwidth in buffer-less slotted OPS networks suitable for the next generation networks where the QoS must be addressed. We study both design and analysis issues in a cost-effective OPS network, where different techniques are provided as: class-based packet scheduling to differentiate user packets in edge nodes, contention reduction to reduce number of contentions in network, retransmission in the optical domain to limit the number of retransmissions, smooth optical network access, even slot-transmission concept and formulation, user packet assembling, and integration of a reservation-based with a contention-based bandwidth access scheme to provide a loss-free OPS.