Patent ID: 8036607

Claim:
A wireless terminal which allows time-divisional transmission to a first wireless communication system and a second wireless communication system, comprising: a first control channel modulation unit which modulates control signals to the first wireless communication system; a first data channel modulation unit which modulates data signals to the first wireless communication system; a first RF unit which converts outputs of the first control channel modulation unit and the first data channel modulation unit into high-frequency signals; a second control channel modulation unit which modulates control signals to the second wireless communication system; a second data channel modulation unit which modulates data signals to the second wireless communication system; a second RF unit which converts outputs of the second control channel modulation unit and the second data channel modulation unit into high-frequency signals; a transmission control unit which controls a second transmission timing to the second wireless communication system; a switch which selects an output from one of the first RF unit and the second RF unit; and a common control unit which controls the transmission control unit, the first control channel modulation unit and the switch; wherein said common control unit controls a first transmission timing to the first wireless communication system based upon said second transmission timing for the second wireless communication system.