TITLE:
Lifetime Enhancement of Cluster Based Wireless Sensor Network through Energy Efficient MAC Protocol
AUTHORS:
B. Priya, S. Solai Manohar
KEYWORDS:
Channel Allocation, Delay Systems, Energy, Lifetime Estimation, Throughput, Wireless Sensor Network (WSN)
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.9,
July
19,
2016
ABSTRACT: The efficient use of energy is an important performance
metric to extend the lifetime of wireless sensor networks. Since major energy
consumption of node is due to its transceiver, the design of MAC protocol plays
a vital role in sensor network design. In cluster based sensor networks, due to
the different functions of member node and cluster head node, the usage of
common MAC protocol results increased energy consumption. To overcome this
problem, a novel energy efficient hybrid MAC protocol (EEHMAC) for cluster
based wireless sensor networks is proposed in this paper. The proposed EEHMAC
protocol uses E-TDMA (Energy efficient TDMA) for intra-cluster communication
and FDMA (Frequency Division Multiple Access) for inter-cluster communication.
IDS (Iterative Deepening Search) based Scheduling algorithm is used for
assigning time slot and frequency slot to nodes. Nodes in EEHMAC follow the
periodic duty cycle, which reduces the idle listening, and overhearing
problems. Simulation results reveal that an average of 18% energy saving is
achieved compared to LEACH (Low Energy Adaptive Clustered Hierarchy) protocol
and 10% energy is saved in comparison with GH-MAC (Graph theory based Hybrid
MAC) protocol. It is evident that delay of EEHMAC is reduced by 17% and
throughput is increased by 15% under all traffic conditions. These results
demonstrate that EEHMAC performs better than existing MAC protocols in terms of
energy efficiency, delay and throughput.