Research Article
Increasing the Life-time of 802.15.4-based Wireless Sensor Networks
@INPROCEEDINGS{10.4108/icst.bodynets.2013.253648, author={Seokwon Lee and Sungwoo Weon and Sooyong Choi and Jang-won Lee and Changsoon Park and Youngsoo Kim and Young-jun Hong and Daesik Hong}, title={Increasing the Life-time of 802.15.4-based Wireless Sensor Networks}, proceedings={8th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2013}, month={10}, keywords={dynamic spectrum access cognitive radio energy efficiency wireless sensor network}, doi={10.4108/icst.bodynets.2013.253648} }- Seokwon Lee
Sungwoo Weon
Sooyong Choi
Jang-won Lee
Changsoon Park
Youngsoo Kim
Young-jun Hong
Daesik Hong
Year: 2013
Increasing the Life-time of 802.15.4-based Wireless Sensor Networks
BODYNETS
ACM
DOI: 10.4108/icst.bodynets.2013.253648
Abstract
This paper investigates a dynamic spectrum access (DSA) scheme for low power wireless sensor networks (WSN) in an open spectrum where multiple systems coexist and interfere with each other. Low transmission power and a simple communication protocol are significant obstacles to the operation of low power WSN in the open spectrum. As a result, available spectrum is more scarce for a low power WSN than for the other coexisting systems. To address this, we are proposing a new DSA scheme with an energy efficient channel switching criterion that can improve the expected throughput by chasing the low interference channel. OPNET-based system level simulation results, designed under the framework of ZigBee and IEEE 802.15.4, demonstrates that the proposed DSA scheme shows improved energy efficiency and throughput compared to conventional ZigBee systems.