Patent ID: 8130958

Claim:
An apparatus for wireless communication, the apparatus comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to: detect a wireless device based, at least in part, on reception of a transmission from the wireless device, the transmission occurring at a normal-power level; exchange, in response to at least the detection of the wireless device, one or more encryption keys with the wireless device at a low-power level; initiate an encrypted session with the wireless device at the normal-power level using the one or more encryption keys exchanged at the low-power level; and communicate with the wireless device in the encrypted session after the initiation is successful, wherein some transmissions in the encrypted session are transmitted at the low-power level and some other transmissions in the encrypted session are transmitted at the normal-power level, wherein power level of each transmission in the encrypted session is selected based on whether data to be transmitted is confidential information.