Retransmission strategies for cyclic polling over wireless channels in the presence of interference

Authors:
Giovanni Gamba;Federico Tramarin;Andreas Willig
Affiliations:
Department of Information Engineering, University of Padova;Department of Information Engineering, University of Padova;Telecommunication Networks Group, Technical University of Berlin
Venue:
ETFA'09 Proceedings of the 14th IEEE international conference on Emerging technologies & factory automation
Year:
2009

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Abstract

In this paper we consider retransmission strategies for centralized cyclic polling-based systems over wireless channels subject to external interference. The considered strategies differ in the time when retransmissions for one particular node are carried out, and in the number of retransmissions that can be carried out for one node. We show experimentally and by simulation that two related strategies introduced in this paper, called the queueing-based strategies, significantly outperform the traditional strategy in which all admissible trials towards one node are carried out subsequently in terms of the average number of nodes that cannot be successfully served in a cycle. These performance gains are achieved without increasing the average total transmission effort.