Energy aware routing scheme for mobile ad hoc network using variable   range transmission
  This paper discusses a new energy aware routing scheme which uses variable transmission range. The protocol has been incorporated along with the route discovery procedure of AODV as a case study. Both the protocols are simulated using Network Simulator and comparisons are made to analyze their performance based on energy consumption, network lifetime and number of alive nodes metrics for different network scenarios. The results show that EAR makes effective node energy utilization. 
Pinki Nayak, Rekha Agarwal, and Seema Verma
cs.NI