Patent ID: 7526302
Filing Date: 2009-04-28
Classification: H04B,H04W

Abstract:
1. A method of synchronizing a mobile station with a base station in a wireless communications system, which method includes the following steps: transmission of messages by the base station via a given channel which is defined by the frequency and the time slot, at least part of the messages containing a synchronization component and an identification component which identifies the base station, reception of one of the messages by the mobile station, comparison of the synchronization component of the received message with a stored synchronization pattern and comparison of the identification component of the received message with a stored identification pattern, and synchronization of the mobile station with the timing underlying the received message if both two comparisons have yielded correspondence, wherein the mobile station carries out the comparisons in a time window which comprises all relevant time slots, the comparisons are sequentially carried out in the time window for all relevant frequencies for as long as no correspondence is found for a frequency, when correspondence is found, new comparisons with components of a subsequent message are carried out for the same frequency and in the same position of the time window, a synchronization of the mobile station in conformity with the synchronization component of the message takes place when the new comparisons reveal correspondence again, and when the repeated comparisons do not demonstrate correspondence, a window for further comparisons is positioned in such a manner that it commences directly after the beginning of the synchronization component of the first message compared in the same position and that it ends at the end of the time window used thus far.