Research Article
Enhancement of the IEEE 802.15.4 MAC Protocol for Scalable Data Collection in Dense Sensor Networks
@INPROCEEDINGS{10.4108/ICST.WIOPT2008.2982, author={Kiran Yedavalli and Bhaskar Krishnamachari}, title={Enhancement of the IEEE 802.15.4 MAC Protocol for Scalable Data Collection in Dense Sensor Networks}, proceedings={6th International ICST Symposium on Modeling and Optimization}, publisher={IEEE}, proceedings_a={WIOPT}, year={2008}, month={8}, keywords={Back Energy consumption Mathematical model Media Access Protocol Multiaccess communication Network topology Sensor systems Switches Throughput Transmitters}, doi={10.4108/ICST.WIOPT2008.2982} }- Kiran Yedavalli
Bhaskar Krishnamachari
Year: 2008
Enhancement of the IEEE 802.15.4 MAC Protocol for Scalable Data Collection in Dense Sensor Networks
WIOPT
IEEE
DOI: 10.4108/ICST.WIOPT2008.2982
Abstract
We find that the IEEE 802.15.4 MAC protocol performs poorly for one-hop data collection in dense sensor networks, showing a steep deterioration in both throughput and energy consumption with increasing number of transmitters. We propose a channel feedback-based enhancement to the protocol that is significantly more scalable, showing a relatively flat, slowchanging total system throughput and energy consumption as the network size increases. A key feature of the enhancement is that the back-off windows are updated after successful transmissions instead of collisions. The window updates are based on an optimality criterion we derive from mathematical modeling of p-persistent CSMA.
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