Patent ID: 7561600

Claim:
Method for allowing the synchronization at a multiframe level of a mobile terminal of a radiocommunications system on a traffic downlink having a multiframe structure with a given number L of useful data frames, comprising: sending signalling frames by a base station of the system, which signalling frames are respectively associated with each useful data frame of the traffic downlink and which each contain a signalling code, wherein: a number N of distinct synchronization values of the signalling codes, which are usable by the mobile terminal to recover the synchronization at the multiframe level, that is less than L; and apportioning said N synchronization values over the associated signalling frames in such a way that there exist integers P and Q, which are not both equal to unity, such that the P×Q synchronization values respectively contained in P sequences of associated signalling frames each comprising Q signalling frames respectively associated with any Q consecutive useful data frames of a multiframe, form a unique word.