| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to suppress interference on a control channel when a downlink is established by a downlink control channel signal on the basis of an uplink control channel signal from a radio terminal device.SOLUTION: A radio base station is comprised of: a radio unit 32 for performing radio communication with a radio terminal device 10 via an adaptive array antenna 31; and a control unit 34 for performing control of adaptive array null steering transmission for suppressing transmission of a transmission radio wave of a downlink CCH signal DS to establish a communication link toward the direction of the radio terminal device 10 when it is detected that an uplink CCH signal US to establish a communication link transmitted by the radio terminal device 10 and received by the radio unit 32 is destined to another radio base station 40. |
