Patent ID: 6879845

Claim:
A wireless communication method for base stations each having a plurality of antenna elements to communicate with wireless terminals, comprising the steps of: receiving signals from said wireless terminals via said antenna elements from which the received signals can be synthesized and to which the transmission signals can be synthesized to form an antenna directivity of certain beam patterns; synthesizing said signals received from said antenna elements to form said antenna directivity of said certain beam pattern; selecting one of said received signals from said wireless terminals on the basis of said synthesized received signals of different directivities and determining transmission beam direction information for use in directing the beam in the direction of said selected signal; estimating a transmission beam slot on the basis of said determined beam direction information, and a table of the relations of transmission beam directions and time slots on which said radio beams are radiated in those directions; and transmitting a down-link signal on said estimated transmission beam time slot from said antenna elements controlled.