Apparatus and method for estimating uplink transmit timing in wireless communication system

The present invention, processes, and the downlink tracking for each of the each frame to track the DL timing with the downlink preamble signal received in each frame on the uplink transmission timing estimation method and apparatus in a UE of a wireless communication system using the timing including the previous frame and the process of estimating the value of time offset (time offset) between a current frame, estimating a process and an uplink transmission timing by using the estimated time offset value to, or change the complex hardware can be adjusted to actively uplink transmission timing to the channel environment changes alone, without further modification of the simple software, to improve the link performance, it is possible to improve the call quality. Time estimation, RNG-RSP (Ranging Response), time offset, and the uplink timing, downlink timing