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In this paper, Improved Dual Hop Routing protocol (IDHR) and Multiple data sink-based Energy Efficient Cluster-based routing protocol (MEEC) are proposed. The Cluster Head (CH) selection in IDHR and MEEC is done by incorporating node density parameter along with other parameters, namely energy and distance between the node and the sink. In MEEC, multiple data sinks are employed to pact with the burden on the relaying nodes involved in data forwarding. The node density factor proves to be adherent for energy preservation of nodes by abating the average communication distance between the nodes and respective CH. The employment of multiple data sinks in MEEC avoids any dual hop communication between CHs and sink, which in turn alleviates hot-spot problem and ameliorates network longevity. As evident from the simulation results, IDHR and MEEC individually outperform competitive …