Patent ID: 7991160

Claim:
In a wireless communication system including a wireless transmit/receive unit (WTRU) and a serving network (SN), wherein the SN comprises at least a Node B and a radio network controller (RNC), a method for providing secure wireless communications, the method comprising: the WTRU and the Node B performing joint randomness not shared by others (JRNSO) measurements to generate JRNSO bits based on a channel impulse response (CIR) estimate between the WTRU and the Node B; the WTRU and the Node B performing a reconciliation procedure to generate common JRNSO bits; the Node B sending the common JRNSO bits to the RNC; the WTRU and the SN generating a session key used for security; the WTRU and the SN securing said session key using the common JRNSO bits when a length of said common JRNSO bits are compared to a length of said session key and are greater than or equal to said length of said session key; the SN sending a handover command to the WTRU and a second Node B to initiate a handover to the second Node B, the SN informing a start of JRNSO measurements between the WTRU and the second Node B; the WTRU and the second Node B performing JRNSO measurement to generate a first set of JRNSO bits based on a channel estimate between the WTRU and the second Node B; the WTRU and the second Node B performing a reconciliation procedure to generate a second set of common JRNSO bits; the second Node B sending the second set of common JRNSO bits to the SN; and the WTRU and the SN securing the session key used for security using the second set of common JRNSO bits.