Network layer packet redundancy in optical packet switched networks | Zendy

Harald �verby | Zendy

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Network layer packet redundancy in optical packet switched networks

Author(s) -

Harald �verby

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004881

Subject(s) - packet segmentation , processing delay , computer science , computer network , network packet , end to end delay , burst switching , transmission delay , redundancy (engineering) , fast packet switching , packet switching , packet analyzer , packet loss , link state packet , ring network , real time computing , network topology , operating system

A crucial issue in optical packet switched (OPS) networks is packet losses at the network layer caused by contentions. This paper presents the network layer packet redundancy scheme (NLPRS), which is a novel approach to reduce the end-to-end data packet loss rate in OPS networks. By introducing redundancy packets in the OPS network, the NLPRS enables a possible reconstruction of data packets that are lost due to contentions. An analytical model of the NLPRS based on reduced load Erlang fix-point analysis is presented. Simulations of an OPS ring network show that the NLPRS is in particular efficient in small networks operating at low system loads. Results also show how the arrival process, packet length distribution, network size and redundancy packet scheduling mechanism influence the NLPRS performance.

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