Method of random access to a physical random access channel and mobile station implementing this method

摘要

The method of random access comprises the selecting (112; 140) of an available uplink access slot; the transmission (136) of a preamble with a commanded power (CPP); the evaluation (138, 162) of the satisfaction of a send authorization criterion (AI) following the transmission of said preamble; and the transmission (164) of a message part when said send authorization criterion (AI) is satisfied. It comprises, after said step (112; 140) of selecting an available uplink access slot, the detecting (116; 142) of a possible overlap between said selected available uplink access slot and a measurement occasion and in case of detection of an overlap, the selecting (112; 140) of a new available uplink access slot. Application to a mobile station of a UMTS network.