Abstract: A Wireless Sensor Network (WSN) is composed of a large number of tiny sensor nodes, relay nodes and a sink that are deployed in an environment to collect information. Irregular placement of sensor nodes in WSN causes unbalanced energy depletion and reduces the overall performance of WSN. The extra cost of processing and redundant links occurrence of sensor nodes in the congested sensor node topology maximizes the overhead of wireless sensor network. In proposed two-echelon architecture, minimum sensor node deployment algorithm is used to achieve full coverage and relay node deployment algorithm is used to reduce redundant data links. In first echelon, the sensor node sends its data to relay nodes. In second echelon, the relay node forwards the incoming packets to the sink. Simulation result presents that our proposed work enhanced the lifetime of the network and data delivery. It also ensures more than 95% of the total energy utilization of the network.