Abstract:
In large scale wireless sensor networks
clustering is often used for improving energy
efficiency and achieving scalable performance. In the
clustered environment, data gathered by the nodes is
transmitted to the base station through cluster-heads
(CHs). As the nodes will communicate data over
shorter distances in such an environment, the energy
spent in the network is likely to be substantially
lower compared to when every sensor communicates
directly to the base station. The essential operation
in sensor node clustering is to select a set of clusterheads
from the set of nodes in the network, and then
cluster the remaining nodes with these heads. In this
paper, we propose a distributed energy efficient
cluster formation (DEECF) algorithm for wireless
sensor networks. The cluster-head selection
algorithm of DEECF is extended the LEACH’s
stochastic cluster-head selection algorithm by
considering the additional parameters, the residual
energy of the node relative to the residual energy of
the network. We also compare our DEECF with
LEACH in terms of network lifetime. The simulation
results demonstrate that DEECF can achieve high
energy efficiency and prolong network lifetime.
