EP2661133

Embodiments of the present invention relate to a base station device is adapted to transmit timing deviation information to a mobile station device for the mobile station device to manage an uplink synchronous status by using a timer so that the uplink synchronous status is sustained until the timer expires after the timer is reset on receiving the timing deviation information, wherein the base station device is adapted to receive a random access preamble whose preamble ID was randomly selected by the mobile station device and sent from the mobile station device; and is adapted to send to the mobile station device a random access response corresponding to the random access preamble, the random access response comprising timing deviation information used for the mobile station device to discard in an uplink synchronous status.