In order to eliminate premature dead hotspots and energy holes in the wireless sensor networks

it designs a AODV routing protocol with selfadaptability across multi-tiers and energy balance was designed to optimizes the RREQ broadcast process with an extension of RREQ protocol and selectively routing the frames of RREQ protocol by residual power in the node. The result of NS2 simulation indicates that this solution dramatically cuts down the energy consumption during the network transmission to extend the network life circle

while still ensures the network with low latency and high throughput.