Patent ID: 7983230

Claim:
A method for controlling transmit power, comprising: receiving one of a hello request to send (HRTS) signal, broadcast request to send (BRTS) signal and packet request to send (PRTS) signal; computing a signal to noise ratio (SNR) for the one of the HRTS, BRTS, and PRTS signal; computing a transmit power for a probing RTS (PrRTS) signal based at least in part on the SNR of the one of the HRTS, BRTS and PRTS signal, and thereafter transmitting both a request to send (RTS) signal and the PrRTS signal; receiving a clear to send (CTS) signal in response to the RTS and PrRTS signals, the CTS signal including a SNR for the PrRTS signal; computing a SNR correction factor based at least in part on the SNR for the PrRTS signal; and transmitting a data packet at a power level that is computed based at least in part on the SNR correction factor.