A Domain-based Resource Reservation Protocol for Optical Burst Switching Networks

B. Shihada and P.-H. Ho (Canada)

Keywords

Optical Burst Switching, Domain, Blocking Probability, Nodal Processing Time, and QoS.

Abstract

The future optical Internet based on the Optical Burst Switching (OBS) technology is expected to provision ultra-dynamic bandwidth for multi-custom applications. Data bursts with variable lengths are delivered in the underlying optical layer based on an asynchronous operation mode. Under the framework of OBS routing and signaling, a novel protocol called Domain-based Resource Reservation Protocol (DRRP) is proposed. The proposed scheme partitions the OBS core network into multiple domains, each maintaining its local resource availability and routing information. A compromise is initiated between the throughput and the delay due to nodal processing by jointly considering Fixed Path Routing (FPR) and Hop-by-Hop Routing (HHR) in the interand intra domain path selection. Extensive simulations show that the proposed approach have improved the overall network throughput and reduced the average blocking probability thus reduces the retransmission delay.

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