When a base station and a plurality of terminal stations communicate with each
other by radio, power control information for controlling electric power of a signal
transmitted to the base station is multiplexed at the base station and transmission
energy is adjusted such that total transmission energy of the multiplexed power
control information becomes substantially a predetermined value if the total transmission
energy of the multiplexed power control information is lower than a predetermined
value. Therefore, information such as power control information that should be
individually instructed to respective terminal stations can satisfactorily be transmitted
by a simple arrangement and a simple processing.
