| 摘要 |
A method of cell search in a wireless communication systems having a plurality of base stations and a mobile station, each of the plurality of base stations serving a separate cell within a service area and transmitting a common primary synchronisation code (PSC) in a primary synchronisation channel within a slot of a radio frame, the method including the steps of: (a) scanning ( 72 ) through radio channels in scanning increments corresponding to a standard channel raster; (b) estimating ( 98 ) the PSC signal-to-noise ratio of each radio channel; (c) if a PSC signal-to-noise ratio is above a first predetermined threshold level ( 100 ), completing a cell search procedure including slot synchronisation, frame synchronisation and scrambling code detection steps for that radio channel; (d) if the cell search procedure is successfully completed ( 112 ) for the radio channel in step (c), increasing the scanning increments to the broadcast frequency separation between cells; (e) when all radio channels are scanned in step (d), sorting ( 74 ) the scanned radio channels in descending order by PSC signal-to-noise ratio; and (f) performing ( 76 ) the cell search procedure on each sorted radio channel in descending order.
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