FFDA: A tree based energy aware data aggregation protocol in wireless sensor networks

In wireless sensor networks (WSN´s), data aggregation is used to increase energy efficiency by means of eliminating redundancy and forwarding the collected abstract data of sensor nodes toward the sink. One of the most important challenges in WSN is to keep the remaining energy of nodes high and balanced to achieve longer system lifetime. In this article we propose an energy efficient data aggregation protocol named FFDA (Feed Forward Data Aggregation) for constructing the spanning tree, we also represent a new parameter called EAT (Energy After Transmission). This protocol considers EAT as the main parameter to select a node as root for spanning tree in the beginning of each round of data aggregation. Using this new parameter the remaining energy of nodes remain more balanced thus the first node die is delayed significantly and it also improves the system´s lifetime as indicated by simulation results.