Patent ID: 8180363

Claim:
A communication terminal apparatus, comprising: a first wireless communication module which executes communication in a predetermined frequency band, using a first communication scheme; a second wireless communication module which executes communication in the predetermined band, using a second communication scheme that differs from the first communication scheme; and a control unit which has said first wireless communication module and said second wireless communication module execute communication in accordance with a reference communication cycle common thereto, wherein said control unit determines a first prohibited communication period of said second wireless communication module in each communication cycle of said second wireless communication module, wherein the first communication prohibited period is determined based on a number of wireless terminals wirelessly connected to the first wireless communication module, determines a second prohibited communication period of said second wireless communication module every N communication cycles, where N is a natural number more than 1, so that a period for prohibiting said second wireless communication module from executing communication is extended when the second prohibited communication period is included in the communication cycle, and sends parameters associated with the first prohibited communication period and the second prohibited communication period to the second wireless communication module, wherein the second wireless communication module autonomously stops communication in the first and second prohibited communication periods.