10-08-2012, 02:53 PM
Distributed Energy-Efficient Hierarchical Clustering for Wireless Sensor Networks
INTRODUCTION
Since nodes in a sensor network have limited energy, prolonging the network lifetime and improving scalability become important. In this paper, we propose a distributed weight-based energy-efficient hierarchical clustering protocol (DWEHC). Each node first locates its neighbors (in its enclosure region), then calculates its weight which is based on its residual energy and distance to its neighbors. The largest weight node in a neighborhood may become a cluster head. Neighboring nodes will then join the cluster head hierarchy. The clustering process terminates in O (1) iterations, and does not depend on network topology or size. Simulations show that DWEHC clusters have good performance characteristics.
Advantages:
• The algorithm constructs multilevel clusters and the nodes in each cluster reach the cluster head by relaying through other nodes.
Disadvantages:
• Some more parameters like fault tolerance are needed for performance evaluation.