A channel selection method to increase wireless sensor battery life

Authors:
A. Flammini;E. Sisinni;D. Marioli;A. Taroni
Affiliations:
Department of Electronics for Automation, University of Brescia, Brescia, Italy;Department of Electronics for Automation, University of Brescia, Brescia, Italy;Department of Electronics for Automation, University of Brescia, Brescia, Italy;Department of Electronics for Automation, University of Brescia, Brescia, Italy
Venue:
ACOS'06 Proceedings of the 5th WSEAS international conference on Applied computer science
Year:
2006

Citing 2
Cited 0

Wireless sensor networks: a survey

Computer Networks: The International Journal of Computer and Telecommunications Networking
Improving wireless sensor network lifetime through power aware organization

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Abstract

In most of wireless sensor networks a single externally-powered coordinator collects data from several battery-powered nodes using a simple star topology. This paper presents an innovative approach, based on an adaptive channel selection method, to reduce sensor power consumption in heavy RF-noise condition. While managing the network, the coordinator can scan the spectrum looking for free available channels; then the coordinator chooses a "backup channel" and communicates it to sensors. If a sensor looses contact with coordinator on the main channel the proposed method furnishes the "backup channel" for a faster reconnection. Despite a complexity and consumption increase of coordinator, sensor battery life can sensibly increase (more than twice). A simple real network, based on WirelessUSB™ technology by Cypress, has been developed to experimentally evaluate performance, especially as regard RF power measurement capability of low-cost 2.4GHz RF-transceivers.