Design and implementation of a prototype optical deflection network
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
Optical burst switching (OBS) - a new paradigm for an optical Internet
Journal of High Speed Networks - Special issue on optical networking
Dynamic burst discarding scheme for deflection routing in optical burst switching networks
Optical Switching and Networking
Light trees: optical multicasting for improved performance in wavelength routed networks
IEEE Communications Magazine
QoS performance of optical burst switching in IP-over-WDM networks
IEEE Journal on Selected Areas in Communications
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This paper proposes a contention resolution scheme considering multicast traffic in optical burst switching (OBS) networks. In OBS networks, for unicast bursts, contention can be avoided by deflection routing. However, deflection routing cannot be applied to multicast bursts because multicast bursts are transmitted along light-trees which are fixed, tree-shaped routes. Therefore, the loss probability of multicast bursts is generally high. To resolve this problem, the proposed scheme introduces an ingenious offset time assignment strategy which completely avoids contention of multicast bursts due to transmissions of unicast bursts by strategically assigning additional offset times. Furthermore, in the proposed scheme, unicast bursts avoid contention with deflection routing. Through simulation experiments, we show that the proposed scheme improves the loss probabilities of both of unicast bursts and multicast bursts.