ARRAY ANTENNA BASE STATION DEVICE AND RADIO TRANSMISSION METHOD

摘要

A transmission directivity generating circuit (110, 111), when a communication terminal to be subjected to the generation of a transmission directivity (that is, a communication terminal (116) in the transmission directivity generating circuit (110), and a communication terminal (117) in the transmission directivity generating circuit (111)) is a high-speed data communication terminal, generates a transmission directivity oriented in an incoming direction of a signal transmitted from the high-speed data communication terminal. Conversely, when a communication terminal to be subjected to a transmission directivity is a communication terminal used for general communications, a transmission directivity is generated so as to orient a null toward an incoming direction of a signal transmitted from the high-speed data communication terminal.