Patent ID: 6151310
Filing Date: 2000-11-21
Classification: H01Q,H04B,H04W,Y02D

Abstract:
A time division multiple access (TDMA) base station for communicating with a plurality of mobile stations in a cellular communications system using a plurality of time division multiple access (TDMA) time slots in a time division multiple access (TDMA) time frame, said base station comprising:an antenna comprising an array of transmit antenna elements;a modulator for generating a first cellular radio signal for transmission during a first time division multiple access (TDMA) time slot of the time division multiple access (TDMA) time frame, and for generating second and third cellular radio signals for simultaneous transmission during a second time division multiple access (TDMA) time slot of the time division multiple access (TDMA) time frame, wherein said second and third radio signals are generated and transmitted on different frequencies; anda radio frequency switch for coupling said first cellular radio signal to a first plurality of said transmit antenna elements for transmission during said first time division multiple access (TDMA) time slot of the time division multiple access time frame, and for coupling said second and third cellular radio signals to respective second and third pluralities of said transmit antenna elements for transmission during said second time division multiple access (TDMA) time slot of the time division multiple access time frame wherein said second and third pluralities of said transmit antenna elements each comprise different ones of said transmit antenna elements.