Computer Science – Networking and Internet Architecture
Scientific paper
2010-03-17
International Journal of Computer Networks & Communications 2.2 (2010) 108-117
Computer Science
Networking and Internet Architecture
10 pages, IJCNC Journal 2010
Scientific paper
10.5121/ijcnc.2010.2208
In this paper, we propose a hybrid medium access control protocol (H-MAC) for wireless sensor networks. It is based on the IEEE 802.11's power saving mechanism (PSM) and slotted aloha, and utilizes multiple slots dynamically to improve performance. Existing MAC protocols for sensor networks reduce energy consumptions by introducing variation in an active/sleep mechanism. But they may not provide energy efficiency in varying traffic conditions as well as they did not address Quality of Service (QoS) issues. H-MAC, the propose MAC protocol maintains energy efficiency as well as QoS issues like latency, throughput, and channel utilization. Our numerical results show that H-MAC has significant improvements in QoS parameters than the existing MAC protocols for sensor networks while consuming comparable amount of energy.
Kwak Kyung Sup
Mehta Sajjan S.
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