Packet loss differentiation using network layer packet redundancy in optical packet/burst switched networks

Authors:
Harald Øverby
Affiliations:
Norwegian University of Science and Technology, Trondheim, Norway
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

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Abstract

Optical Packet/Burst Switching (OPS/OBS) has emerged as a promising candidate for the next-generation all-optical network scenario. A crucial issue in OPS/OBS networks is how to provide packet loss rate (PLR) differentiation at the network layer. In this paper we propose a novel PLR differentiation scheme that utilizes network layer packet redundancy in order to isolate service classes in an OPS/OBS network. We derive an analytical model of the proposed scheme based on reduced load Erlang fix-point analysis. A numerical evaluation shows that the isolation degree between the service classes is dependent on the amount of redundancy, system load and share of high priority traffic.