Patent ID: 8280046

Claim:
A method for deriving an encryption key for securing wireless communications the method comprising: a wireless transmit/receive unit (WRTU) obtaining an association to an access point (AP); the WTRU determining a secret that complies with a supported authentication; the WTRU generating a channel impulse response (CIR) estimate based upon a signal received from the AP; the WTRU correcting errors in the CIR estimate and generating parity bits by performing error correction coding on the CIR estimate; the WTRU multiplexing the parity bits with a synchronization code to generate a multiplexed bit stream; the WTRU transmitting the multiplexed bit stream to the AP; the WTRU generating joint-randomness-not-shared-with-others (JRNSO) bits from the corrected CIR estimate; the WTRU deriving a pairwise master key (PMK) using the secret and the JRNSO bits; and the WTRU deriving a pairwise transient key (PTK) using the PMK and the JRNSO bits.