Wireless Sensor Networks (WSNs) have gained worldwide attention in recent
years with the wide deployment of smart sensors. These sensors are small,
with limited processing resources and limited battery life. Sensor nodes can
sense, measure and gather information from the environment and based on
some local decision process, they can transmit the sensed data to the base
station. WSNs are large networks made up of numerous number of sensor
nodes with sensing, computation and wireless application capabilities.
Due to the non-uniform node distribution, the energy consumption among
nodes is more imbalanced in cluster-based wireless sensor networks. Here
we give a brief summary of the analysis and simulation of cluster-based routing
protocols, based on the energy consumption and conclude that the non-uniform
node distribution protocols like EADUC and EADC can give better energy
consumption than the uniform node distribution algorithm like LEACH.

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