Method for detecting random access of user equipment

摘要

The present invention discloses a method for detecting random access of User Equipment (UE), applicable to a mobile communication system consisting of at least one Base Station (BS) and a group of UEs; wherein the BS and the group of UE use a set of N (N is a positive integer) orthogonal or quasi-orthogonal pseudo-random sequence codes for UEs' random access. The method comprises: BS receiving a random access signal, and making correlation operation of the received signal with each pseudo-random sequence code in said code set successively to obtain a corresponding correlation result window; finding the maximum correlation peak in the correlation result window, and then dividing a correlation peak window and the front-side and rear-side windows thereof; setting one or more thresholds and comparing them with correlation results in the correlation peak window or in the correlation peak window and the front-side and rear-side windows; when conditions are satisfied, determining that the pseudo-random sequence code involved in the above correlation operation is the pseudo-random sequence code selected by the UE randomly accessed at the moment; thereby, detecting each randomly accessed UE.