Method for the synchronization of at least one mobile station in a mobile telecommunication network with a modified synchronization channel structure
First Claim
1. Method for the synchronization of at least one mobile station with a base station within a mobile telecommunication network, comprising a step for the generation, by said base station, of a basic synchronization signal comprising N synchronization bursts per radio frame, called basic synchronization bursts, a step for the transmission of said basic synchronization signal during at least one radio frame of a synchronization channel, each of said N basic synchronization bursts being associated with a time slot of said radio frame and being transmitted during a time interval at the beginning of said associated time slot, and a step for the reception and processing of said basic synchronization signal by said at least one mobile station, characterised in that it furthermore comprises a step for the generation of an additional synchronization signal intended to be transmitted with said basic synchronization signal during said step for the transmission of the basic synchronization signal, said additional synchronization signal comprising at least one synchronization burst, called additional synchronization burst, said at least one additional synchronization burst being transmitted during at least one time interval called reinforced synchronization interval (RSI), said at least one additional synchronization burst being furthermore non-overlapping with said basic synchronization bursts.
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Abstract
The invention relates to a method for the synchronization of at least one mobile station with a base station within a mobile telecommunication network. According to the invention, it is proposed to intensify the synchronization signal at regular intervals during a short time interval called reinforced synchronization interval or RSI interval. The cycle of activity of the synchronization channel of the base station is thus increased on a time interval corresponding to the reinforced synchronization interval. This will reduce the effective time of acquisition of the synchronization signal and thereby reduce the size or number of time windows needed for this acquisition. The cycle of activity of the synchronization channel is increased by increasing the number of synchronization bursts during the RSI interval. Application to UMTS-FDD type third-generation telecommunication networks.
40 Citations
45 Claims
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1. Method for the synchronization of at least one mobile station with a base station within a mobile telecommunication network, comprising a step for the generation, by said base station, of a basic synchronization signal comprising N synchronization bursts per radio frame, called basic synchronization bursts, a step for the transmission of said basic synchronization signal during at least one radio frame of a synchronization channel, each of said N basic synchronization bursts being associated with a time slot of said radio frame and being transmitted during a time interval at the beginning of said associated time slot, and a step for the reception and processing of said basic synchronization signal by said at least one mobile station,
characterised in that it furthermore comprises a step for the generation of an additional synchronization signal intended to be transmitted with said basic synchronization signal during said step for the transmission of the basic synchronization signal, said additional synchronization signal comprising at least one synchronization burst, called additional synchronization burst, said at least one additional synchronization burst being transmitted during at least one time interval called reinforced synchronization interval (RSI), said at least one additional synchronization burst being furthermore non-overlapping with said basic synchronization bursts.
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26. Mobile telecommunication network comprising at least one mobile station and a plurality of base stations, each base station comprising means for the generation of a basic synchronization signal comprising N synchronization bursts per radio frame, called basic synchronization bursts, means for the transmission of said basic synchronization signal during at least one radio frame of a synchronization channel, each of said N basic synchronization bursts being associated with a time slot of said radio frame and being transmitted during a time interval at the beginning of said associated time slot, each mobile station further comprising means for the reception and processing of said basic synchronization signal transmitted by one of said base stations to synchronize said mobile station with this base station,
characterised in that it furthermore comprises means for the generation of an additional synchronization signal intended to be transmitted with said basic synchronization signal by said means for the transmission of the basic synchronization signal, said additional synchronization signal comprising at least one synchronization burst, called additional synchronization burst, said at least one additional synchronization burst being transmitted during at least one time interval called reinforced synchronization interval (RSI), said at least one additional synchronization burst being furthermore non-overlapping with said basic synchronization bursts.
Specification