Apparatus and method for aligning time of reverse link in mobile communication system

PURPOSE: An apparatus and a method for aligning time of a reverse link in a mobile communication system are provided to align time of a reverse link by transmitting a synchronous channel delay value to a terminal. CONSTITUTION: A terminal requests use of a supplemental channel to transmit data to a base station through a reverse dedicated control channel(111). The base station estimates a round trip delay of the supplemental channel through a pilot channel of the reverse link(112). If the estimated value is higher than a reference value, the base station calculates a time arrangement parameter and an action time parameter for aligning transmission time of data output through the supplemental channel(113). The base station generates the calculated time arrangement signal and a control message to action time to transmit the same to the terminal through a dedicated control channel of a forward link(114). The terminal receives the time arrangement parameter and the action time parameter(115). The terminal aligns time of data to be transmitted through the supplemental channel of the reverse link according to the received parameters(116). Time positions of the supplemental channels are continuously aligned while the terminal communicates data with the base station(117-122).