To provide a radio base station and a radio communication method that enable a radio communication terminal to securely acquire channel allocation information while improving the use efficiency of a downward frame.
A radio base station 100A transmits channel allocation information to a radio communication terminal by using a downward frame containing a map region which is broadcast by a non-directivity beam and a particular region transmitted toward a predetermined direction by a directivity beam. The radio base station 100A includes: a traffic state acquisition unit 105 which acquires the traffic state handled by a mobile communication system 1; and a frame control unit 107 which changes the size of the particular region in the downward frame according to the traffic state obtained by the traffic state acquisition unit 105.
TODA TAKESHI
NAKAYAMA MIGAKU
| JPH07111676A | 1995-04-25 | |||
| JP2001127699A | 2001-05-11 |