Patent ID: 7035233

Claim:
A radio communication terminal apparatus that receives a slot having a long code group identification short code arranged at a predetermined position, comprising: a slot timing specifying system that specifies a slot timing of the received slot; a correlation system that obtains a correlation value between the long code group identification short code and each of a plurality of long code group identification short code candidates, in association with the slot timing; a pattern specifying system that specifies a pattern comprising a plurality of long code group identification short codes, in association with the correlation value; a frame timing specifying system that specifies a frame timing, in association with the pattern; a long code group specifying system that specifies a long code group in association with the correlation value, concurrently with specifying of the frame timing; and a long code specifying system that specifies a long code from among a plurality of long codes belonging to the long code group, in association with the frame timing.