Patent ID: 7447251

Claim:
A radio frequency identification (RFID) system, comprising: An RFID base station adapted to communicate via radio frequency signals having a sequence of carrier frequencies comprising a first carrier frequency and a second carrier frequency each having an allotted amount of transmission time with said RFID base station comprising: a transmitter adapted to transmit said radio frequency (RF) signals; and a processor electrically connected to said transmitter; said processor prior to the sending of a particular radio frequency signal, being adapted to determine the amount of remaining time available on said first carder frequency before expiration of the allotted amount of transmission time; said processor prior to the sending of said particular radio frequency signal, being adapted to determine the amount of time it would take to perform a particular transaction; and said processor prior to the sending of said particular RF signal, being adapted to prematurely force a change to said second carrier frequency for the sending of said particular radio frequency signal before said amount of remaining time available on said first carder frequency expires when said amount of remaining time on said first carder frequency is less than said amount of time it would take to perform said particular transaction.