Patent ID: 8630595

Claim:
A method for transmitting a transmit diversity signal from a communication device having a primary antenna and a secondary antenna, the method comprising: transmitting a signal from the primary antenna, and receiving a primary uplink power control response relating to the primary antenna; transmitting a signal from the secondary antenna, and receiving a secondary uplink power control response relating to the secondary antenna; comparing the primary uplink power control response to the secondary uplink power control response; switching the primary antenna and the secondary antenna; calculating at the communication device at least one mobility parameter, said mobility parameter indicating alteration in propagation of a signal transmitted between said communication device and a second device wherein calculating said at least one mobility parameter comprises calculating at least one power difference and incrementing a previous value of said mobility parameter if said power difference is greater than a threshold; calculating based on said at least one mobility parameter at least one diversity parameter; and transmitting a transmit diversity signal from said communication device using said at least one diversity parameter and the switched primary antenna and secondary antenna.