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US 2006/0188005 A1Published application
Multi-path searching
AssigneesMStar Semiconductor, Inc., MStar Software R&D (Shenzhen) Ltd., MStar France SAS
InventorFrancesc Espax
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AssigneesMStar Semiconductor, Inc., MStar Software R&D (Shenzhen) Ltd., MStar France SAS
InventorFrancesc Espax
Estimating the term…
A multi-path searcher comprises multiple correlators (Co, C1, C2, C3 . . . CN) which each process a predetermined scrambling sequence and channelisation code to carry out a correlation measurement on a received pilot signal after it has been delayed by a different time delay (D) at the input of each correlator. Multiple correlation measurements (MO, M1, M2 . . . MN) are generated and analysed (A) in relation to the time delays to identify the multi-path positions. First candidate multi-path positions are identified over a first predetermined integration period (TP1) and are stored and compared with second candidate multi-path positions derived from multiple correlation measurements made subsequently by the multi-path searcher over a second predetermined integration period (TP2) in relation to a first pilot signal. Said first and second candidate multi-path positions are confirmed or rejected to define modified multi-path positions. Said successive predetermined integration periods (TP1, TP2) are spaced apart to accommodate one or more similar sets of successive integration periods in an interleaved manner, and the same multi-path searcher is used to determine multi-path positions in relation to the pilot signal received in connection with each of different cells (CELL 1, CELL 2, . . . CELL S). Thus, the multi-path searcher carries out a first correlation cycle (T1) in relation to the pilot signal of each of different cells in succession to determine first candidate multi-paths for each, and then carries out a second correlation cycle (T2) in relation to each of the pilot signals again to determine second candidate multi-paths for each to modify the respective first candidate multi-paths.
1-5. (canceled)
A method of multi-path searching in a cellular network in which a multi-path searcher is provided which carries out a correlation process over a predetermined integration period in relation to a first pilot signal received in connection with a first cell of the cellular network to generate first multiple correlation measurements corresponding to a plurality of time delays in the signal, analysing said first multiple correlation measurements in relation to said plurality of time delays to identify multi-path positions in the signal, characterised in that information of said multi-path positions over a first predetermined integration period is stored as a first set of candidate multi-path positions and compared with a second set of candidate multi-path positions derived from second multiple correlation measurements corresponding to said plurality of time delays made by the multi-path searcher over a second predetermined integration period in relation to the first pilot signal, so as to confirm or reject candidate multi-path positions and define modified candidate multi-path positions.
A multi-path searcher for multi-path searching in a cellular network by carrying out a correlation process over a predetermined integration period in relation to a first pilot signal received in connection with a first cell of the cellular network to identify the position of multi-paths in the signal, characterised in that storage is provided to store information of said multi-path positions over a first predetermined integration period as a first set of candidate multi-path positions and to store a second set of candidate multi-path positions derived from multiple correlation measurements made subsequently by the multi-path searcher over a second predetermined integration period in relation to the first pilot signal, and a comparator provided to compare said first and second candidate sets of multi-path positions so as to confirm or reject candidate multi-path positions and define modified candidate multi-path positions.
Dependencies are inferred from the claim text.