Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P2
Session:
Number:P2-82
Distance Adaptive Contention Window Mechanism for Wireless Sensor Networks
Young Duk Kim, Won Seok Kang, Dong Ha Lee, Jae Hwang Yu,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
We propose Distance Adaptive Contention Window (DACW) modified IEEE 802.15.4 standard. The key mechanism of DCAW is a dynamical channel access MAC protocol, which is to adjust Contention Window (CW) according to the hop count distance to sink and traffic condition. With DACW, each sensor node can achieve self-routing capability with low overhead and performance enhancement. Furthermore, DACW can be easily applied to existing routing protocols without additional overhead and shows that its performance is better than the existing MAC protocol by the simulation result.