Reflection Routing: A Simple Approach for Contention Resolution in All-Optical Packet Switched Networks

Shinichi NOMOTO

IEICE TRANSACTIONS on Communications   Vol.E87-B    No.6    pp.1561-1568
Publication Date: 2004/06/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
optical packet switching,  routing,  reflection,  topology,  packet loss ratio,  

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Packet loss is a serious problem due to the shortage of optical buffers in all-optical packet switched networks. In order to reduce packet losses, a dynamic routing method called 'deflection routing' has been proposed. Deflection routing, however, requires an optical switch to modify routing tables and packet labels for overflowing packets, so this routing method may also lead to other implementation problems in packet routing and forwarding. This paper proposes a simple routing method called 'reflection routing' which utilizes optical transport links as optical buffers to improve the quality of service in optical packet switched networks in terms of packet loss ratio. We numerically demonstrate the effectiveness and applicability of reflection routing.