Patent ID: 7061888

Claim:
A communication system, comprising: a base station having: data processing means for individually and adaptively setting processing of data transmitted to each of a plurality of terminal stations based on communication states of each of said plurality of terminal stations; power control information processing means for individually and adaptively setting and multiplexing a transmission energy of power control information for controlling a transmission electric power of all of said plurality of terminal stations based on communication states of said plurality of terminal stations; and transmission processing means for multiplexing and transmitting a signal processed by said data processing means and a signal processed by said power control information processing means; wherein each of said plurality of terminal stations have: measuring means for measuring a reception state of a received signal transmitted from said base station; and transmission processing means for transmitting, with a transmission electric power based on said power control information transmitted from said transmission processing means of said base station, information on said reception state measured by said measuring means, wherein said transmission electric power transmitted by said transmission processing means of said base station is a fixed value, and said power control information processing means adaptively sets a transmission energy for each of said plurality of terminal stations based on said information on said reception state such that a total electric power of said power control information transmitted by said base station is a constant value, and wherein transmission energy for each of said plurality of terminal stations are interdependent such that when the transmission energy for one of said plurality of terminal stations is changed, the transmission energy for the totality of the others of said plurality of terminal stations is changed as well such that the total electric power of said power control information transmitted by said base station is a constant value.