In this paper, we have derived the relationship between the node density and the network lifetime. The
relationship between network energy consumption and node velocity are also analyzed. We find that the
routing protocol have little effect on node energy consumption based on loose traffic environment. We
simulated the network energy consumption under different traffic model. The results show that about 3.6 %
energy is saved by using the ten connections compared with the one hundred connection in two hundred
DSR nodes environment. Finally, future research should be done to extend our simulation to discover more
facts