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AssigneeNEC Corporation
InventorKenichi Katoh
Estimating the term…
The invention provides a mobile communication terminal that allows the time for recognizing the scrambling code to be shortened. The mobile communication terminal predicts the scrambling code to be searched at the next time by collating the previous result of GPS information process and the stored content of a position information database in a control part, if establishment of slot synchronization is completed employing a slot synchronization part. The control part acquires the information required for inverse spreading of the predicted scrambling code from a memory, and generates a code for inverse spreading. A predicted scrambling code recognition part inputs the code for inverse spreading shifted in a unit of slot from the control part, and attempts inverse spreading. The control part suspends a normal three-stage cell search that is performed in parallel with the cell search of the invention, if prediction from the position information is determined to be correct in the predicted scrambling code recognition part.
A mobile communication system comprising a mobile communication terminal that detects a cell to which a self terminal belongs, based on a scrambling code assigned to each cell, said mobile communication terminal comprising means for acquiring the current position information of the self terminal, means for predicting the scrambling code, based on the acquired current position information, and means for determining whether or not said predicted scrambling code is correct, wherein said mobile communication terminal detects the cell to which said self terminal belongs, employing the scrambling code that is determined to be correct.
A mobile communication terminal that detects a cell to which a self terminal belongs, based on a scrambling code assigned to each cell, said mobile communication terminal comprising means for acquiring the current position information of the self terminal, means for predicting the scrambling code, based on the acquired current position information, and means for determining whether or not said predicted scrambling code is correct, wherein said mobile communication terminal detects the cell to which said self terminal belongs, employing the scrambling code that is determined to be correct.
A cell search method for use with a mobile communication system comprising a mobile communication terminal that detects a cell to which a self terminal belongs, based on a scrambling code assigned to each cell, said method comprising, on the side of the mobile communication terminal, a step of acquiring the current position information of the self terminal, a step of predicting the scrambling code, based on the acquired current position information, and a step of determining whether or not said predicted scrambling code is correct, wherein said mobile communication terminal detects the cell to which said self terminal belongs, employing the scrambling code that is determined to be correct.
A cell search program for use with a mobiles communication system comprising a mobile communication terminal that detects a cell to which a self terminal belongs, based on a scrambling code assigned to each cell, said program enabling a computer to perform a step of acquiring the current position information of the self terminal, a step of predicting the scrambling code, based on the acquired current position information, and a step of determining whether or not said predicted scrambling code is correct, wherein said mobile communication terminal detects the cell to which said self terminal belongs, employing the scrambling code that is determined to be correct.
Dependencies are inferred from the claim text.