Methods and apparatus related to the sharing of wide area network (WAN) with peer to peer communication signaling usage are described. A mobile communications device receives a signal from a base station and measures a power of the received signal. The mobile communication device determines a transmission power level of a peer to peer reference signal as a function of the measured power of the received signal from the base station, wherein said function of the measured power of the received signal from the base station depends on a mobile target signal to noise ratio. The mobile communications device broadcasts the peer to peer reference signal at the transmission power level.