Patent ID: 6522896
Filing Date: 2003-02-18
Classification: H04B

Abstract:
A radiocommunication system, comprising:at least one mobile station adapted to operate in said radio communication system; and a base station comprising: at least two antennas for transmitting a channel to a mobile station, and means for selecting one of said antennas, said selector means comprising: means for determining when said channel to transmit to said mobile station is unidirectional, and means for switching from one of said antennas to another in accordance with a predetermined random or pseudo-random law, said law to allow for selecting any one of said antennas including the currently transmitting antenna, when said determination means indicates to said switching means that said channel to transmit is unidirectional; wherein said mobile station, when in an operational idle state, does not listen to said unidirectional channel at every opportunity.