Patent ID: 7885241

Claim:
A receiving apparatus of mobile station for conducting radio communication of Time Division Multiple Access method using control channels and service channels between base stations being characterized by comprising; a modulating unit for outputting a receiving data after receiving and demodulating a signal sent from a base station according a channel setting signal; a unique word detecting unit for switching synchronous patters for control and communication according to a first selecting signal and outputting a detecting signal when the same pattern as the switched synchronous pattern appears in the receiving data; a frame timing unit for outputting a first timing signal and a second timing signal periodically at a specific frame period, synchronized with the detecting signal; a control channel timing unit including a counter for counting the first timing signal, a zero detecting circuit for outputting the first selecting signal according to whether or not a counting value of the counter is zero, a comparing circuit for resetting the counter to zero when the counting value becomes more than a value set in a register, and a matching detection circuit for outputting a second selecting signal when the counting value matches to the value set in the register; a selector for selecting the channel for control or the channel for communication based on the second selecting signal; and a channel control unit for holding a channel selected by the selector according to the second timing signal and giving the held channel to the demodulating unit as the channel setting signal.