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http://dx.doi.org/10.7840/kics.2012.37B.9.750

An Efficient Collision Resolution Method in Wireless Sensor Networks Based on IEEE 802.15.4 Slotted CSMA/CA  

Jung, Kyoung-Hak (포항공과대학교 컴퓨터공학과 모바일 네트워킹 연구실)
Suh, Young-Joo (포항공과대학교 컴퓨터공학과/정보전자융합공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37B, no.9, 2012 , pp. 750-759 More about this Journal
Abstract
This paper addresses the collision resolution issue to enhance the performance of wireless sensor networks based on IEEE 802.15.4 slotted CSMA/CA. Some solutions in existing work try to solve this issue by adjusting Backoff Exponent (BE) value or Backoff Period (BP). In contrast to the existing solutions, the proposed scheme in this paper aims at providing high system throughput, but also achieving efficient energy consumption of sensor nodes by using Preamble Address (PA). For this, in the proposed scheme, only one sensor node begins data packet transmission by performing PA contention phase with other nodes before sending each data packet. Our simulation results show that the proposed scheme outperforms existing algorithms in terms of energy consumption and throughput.
Keywords
IEEE 802.15.4; Zigbee; Energy; Collision resolution;
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