ISSN : 1796-2021
Volume : 1    Issue : 3    Date : June 2006

Energy-Efficient Data Gathering Techniques Using Multiple Paths for Providing Resilience to
Node Failures in Wireless Sensor Networks
Joungsik Kim and Dongkyun Kim
Page(s): 21-28
Full Text:
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Multiple paths have been used to provide loadbalancing of traffic and resilience to node failures in
mobile ad-hoc networks or sensor networks. In addition, the energy expenditure can be distributed
among nodes over the multiple paths. However, most existing multi-path routing protocols require
their complex procedures such as local repair or periodic reconstruction of the multiple paths,
during which much loss of packet is even experienced. In this paper, we therefore propose two
versions of an Energy efficient Data Gathering technique using Multiple paths (EDGM), which are
more suitable for highly populated wireless sensor networks in terms of having more simple and
resilient features than other existing techniques. One of them is to make use of the multiple shortest
paths strictly. The other is to use a neighbor node’s path towards the sink node at the expense of
using much longer paths to provide more resilience to node failures. By simulation using ns-2
simulator, we prove that EDGM versions achieve two goals satisfactorily: energy-saving and
resilience to node failure.

Index Terms
wireless sensor network, resilience, energysaving, multiple paths, neighbor knowledge