| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile station, radio access network and mobile communication system for efficiently utilizing downlink radio resources. SOLUTION: A radio access network apparatus communicates with a mobile station using a dedicated uplink channel, a downlink shared data channel and a downlink signaling control channel. The radio access network apparatus includes: a dedicated uplink channel allocating unit which allocates, to a mobile station starting or restarting communications, on a downlink shared data channel, a dedicated uplink channel to be used by the mobile station; a dedicated channel reception detecting unit which detects, on the allocated dedicated uplink channel, a reception of an uplink transmission from the mobile station; and a downlink transmitting unit which, when the dedicated channel reception of the mobile station is detected, transmits a response to the mobile station using the downlink shared data channel and the downlink signaling control channel. COPYRIGHT: (C)2010,JPO&INPIT |
