Energy Aware Data Aggregation with Sink Relocation to Improve the Network Lifetime

In Wireless Sensor Network (WSN), the sensor devices are prepared with limited battery source and conserving the sensor node’s power in order to increase the lifetime of a network plays a vital role. This paper proposes Energy aware Data Aggregation with Sink Relocation (EDASR) technique to improve the network lifetime. The nodes that are closer to sink will consume additional energy than others to compute and communicate data to sink. Based on the residual energy sink will relocate to another position. During Energy Aware Data Aggregation (EADA) both the Hop Count (hpc) and shortest distance to reach the sink is considered for clustering. The simulation is performed using ns-2.34 in Ubuntu for different initial battery energy and transmission range. Simulation results prove that EDASR method improves network lifetime by increasing number of rounds of message relaying until the first relocation occurs than the existing sink relocation algorithm.

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