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Potential-Based Downstream Routing for Wireless Sensor Networks

Authors:
Shinya Toyonaga
Daichi Kominami
Masashi Sugano
Masayuki Murata

Keywords: sensor networks; potential-based routing; downstream routing; simulation.

Abstract:
In wireless sensor networks designed for periodic monitoring, various many-to-one upstream (sensor-to-sink) routing protocols have been studied. Potential-based routing (PBR) is one such protocol, and can achieve low overhead, high scalability, and efficient load balancing. However, in PBR, unicast messages such as special instructions from a sink node to a certain node are not taken into consideration. In this paper, we propose a potential-based downstream routing protocol (PBDR), in which each sink node constructs an independent potential field and all sensor nodes and sink nodes have a set of potentials determined on each potential field. We refer to the set of potentials as virtual coordinates, based on which we define virtual distance. When a node with downstream data decides a next hop, it calculates the virtual distances from neighbor nodes to the destination node, and forwards the data to the neighbor node closest to the destination node. Through simulation experiments, we show that, given a suitable node density, PBDR attains a data delivery ratio greater than 99.5%. We also show that the data delivery ratio recovers immediately after the failure of 30% of sensor nodes or the failure of a sink node.

Pages: 59 to 64

Copyright: Copyright (c) IARIA, 2012

Publication date: November 18, 2012

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-231-8

Location: Lisbon, Portugal

Dates: from November 18, 2012 to November 23, 2012