Proper

Abstract

Data packets from sensor nodes are generally transferred to the sink node in a wireless sensor networks. So many data packets are gathered around the sink node, resulting in significant packet collision and delay. In this paper we proposed an energy efficient data transmission mechanism. The basic idea of this mechanism is to reduce duplicated data packets prior to be transmitted. Proposed mechanism consists of two parts. One works between sink node and 1-hop nodes from sink. In this area, data packets are transmitted in predefined time slots to reduce collisions. The other part works between other nodes except sink node. In this area, duplicated packets from neighbor nodes can be detected and dropped. Data packet signal length and data packet direction will be used to separate duplicated data packets. Our numerical analysis and simulation results show that our mechanism outperforms other related protocols in terms of energy consumption and transmission delay.