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Ubiquitous peer-to-peer (P2P) networking is widely expected to be manifested in a wireless environment in the near future. However, to realize such an interesting mobile computing platform, energy efficiency is one of the most critical resources management issues yet to be tackled. Unfortunately, energy efficient wireless P2P networking is still a relatively less explored topic as it is quite challenging to tackle the energy management problem without centralized control. In this paper, we meet this research challenge by proposing a new distributed protocol, called community-based asynchronous wakeup protocol, CAWP, for energy conservation in wireless P2P file sharing networks. Simulation results show that our proposed CAWP is found to be highly effective in that it can remarkably increase the energy efficiency of the participants in a wireless P2P system.