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Using Number of Retransmissions to Improve Routing in Ad-hoc NETworks

Authors:
Tiguiane Yélémou
Philippe Meseure
Anne-Marie Poussard

Keywords: Wireless networks; QoS metrics; Routing protocols; OLSR protocol; cross layer approach

Abstract:
In this paper, we analyze the effectiveness of usual metrics and Quality of Service (QoS) methods used to improve routing in wireless networks, when considering the erroneous nature of radio links. We first analyze an additive metric based on Bit Error Rate (BER) and we propose a new metric similar to hop-count metric where retransmissions are accurately taken into account. With this number of retransmissions-based metric, the distance between two adjacent nodes will not be 1, but 1 plus the cost of retransmissions required on the link. Our approach is a light and immediate way to evaluate link quality. It does not imply additional network overhead and costly computation. To test the efficiency of this new metric, we have implemented it into the well-known Optimized Link State Routing protocol. Realistic simulation results show that this metric outperforms traditional metrics like the ones based on delay, BER or Expected Transmission Count.

Pages: 121 to 126

Copyright: Copyright (c) IARIA, 2016

Publication date: November 13, 2016

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-514-2

Location: Barcelona, Spain

Dates: from November 13, 2016 to November 17, 2016