LEACH [1] is an autonomous adaptive clustering protocol that distributes the

energy load evenly among the sensors in the network using randomization. The

nodes organize themselves into local clusters, with one node acting as the local

base station or cluster head. In order to not drain the battery of a single sensor

randomized rotation of the high-energy cluster head position such that it rotates

among the various sensors. Once the cluster head has all the data from the nodes in

its cluster, the cluster head node aggregates the data and then transmits the

compressed data to the base station. Since it compress the amount of data being

sent from the clusters to the base station, energy dissipation is reduced and system

lifetime is thus enhanced.

A Comparative Analysis of Energy-Efficient Routing Protocols 401

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