Patent ID: 8279746

Claim:
An apparatus for performing a scan procedure according to an orthogonal frequency division multiple access (OFDMA) signal, comprising: a first fast Fourier transform (FFT) input buffer for contiguously gathering a first predetermined number of OFDMA samples related to the OFDMA signal during a first period corresponding to a downlink subframe; a second FFT input buffer for gathering a second predetermined number of OFDMA samples related to the OFDMA signal during a second period corresponding to the downlink subframe; an FFT core module for contiguously applying FFT to the first predetermined number of OFDMA samples during the first period and for applying FFT to the second predetermined number of OFDMA samples during a third period corresponding to an uplink subframe, the uplink subframe occurring later than the downlink subframe; a post-FFT processing module for measuring a frame boundary of a serving base station (SBS) of the apparatus during the first period and for measuring a refined frame boundary of at least one neighboring base station (NBS) of the apparatus according to the second predetermined number of OFDMA samples and the frame boundary during the third period; and a channel interference and noise ratio (CINR) measurement module for calculating a CINR value of the at least one NBS based on the refined frame boundary.