To abolish grouping and realize a regulation of the whole terminal at a high accuracy in accordance with an optional regulation rate. A communication regulation state change instruction is output from the timer generator means 23 at a cycle corresponding to the regulation unit time communicated from a radio base-station apparatus 1 to a radio communication terminal unit 2. When the communication regulation state change instruction is output, a communication regulation state is determined in accordance with a result of comparison of the random number generated by the random-number generating means 25 with a predetermined regulation rate. A communication of the radio communication terminal unit is regulated in accordance with the determination. Thus, it is possible to autonomously determine whether the present state is a regulation state in accordance with the clock value of a timer by the terminal unit and change operation states.