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In the power-aware routing protocols, the bandwidth between two mobile nodes is treated as identical no matter what the distance is between these two mobile nodes. In this paper, for the long lifetime routing protocol that we propose, we consider the fact that the bandwidth between two mobile nodes should be different when distances are different. With regard to our proposed long lifetime routing protocol, we find a path with the predictive remaining power of mobile nodes after data transmission to maximize the overall network lifetime. In the simulation, we compare our proposed power-aware routing protocol with the MTPR and MMBCR in terms of the overall network lifetime, the power consumption per bit, and the number of active mobile nodes. In the simulation results, when the bandwidth is considered, our proposed methods can efficiently improve the throughput and extend the overall network lifetime.