Topology control targets to achieve an energy efficient network with limited number of communication links between the sensor nodes. One way to attain a reduced topology is via a cooperative technique. In this paper, a new methodology GAHCT: Genetic Algorithm based Hierarchical Cooperative Technique is proposed and implemented for a N-tier architecture with different node densities. Obtained results prove the effectiveness of our proposed work for a two tier architecture. 

Keywords: Topology control, GAHCT, N-tier architecture