Patent ID: 7069038

Claim:
A method for controlling transmit power in a mobile device in a network comprising: detecting control information from a network node during a control channel sub-frame intended for a mobile device; transmitting a signal in a slot allocated to feedback information in an uplink channel sub-frame immediately preceding an uplink channel sub-frame defined for an acknowledge (ACK) signal or a negative acknowledge (NACK) signal transmission for downlink channel data associated with the control information if no ACK signal or NACK signal was transmitted in the slot allocated to feedback information in the uplink channel sub-frame as a result of a feedback information process from a control channel sub-frame preceding the control channel sub-frame; receiving the downlink channel data indicated by the control information at the mobile device and transmitting an ACK signal or NACK signal in accordance with appropriate receipt of the downlink channel data; and determining if the control information intended for the mobile device is detected in a next valid control channel sub-frame following a sub-frame in which the control information intended for the mobile device was detected, and if not, transmitting a signal in the slot allocated to feedback information in the uplink channel sub-frame corresponding to the next valid control channel sub-frame.