Given the recent rapidly developinghigh speed wireless communication technologiesand high traffic demand for P2P file sharing applications, wireless P2P file sharing is widely reckoned as a key component of the next generation communication network. However, running P2P applicationsin a wireless medium entails different constraints compared with those in the traditional wired Internet. One of the challengesis that portable wireless devices are energy-limited since they are battery-operated and the battery has inevitably limited life. Fairness and incentive are also important issues. Unfortunately, designing a protocol taking all these factors into account is still a relatively unexplored problem. In this paper,we propose a topology control protocol called TCP2P for wireless P2P file sharing network. TCP2P increases the fairness and provides incentive in wireless P2P file sharing applications and is energy-conserving.