Mobile communication system, mobile communication terminal cell search method and program for use therewith
US7664524B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Mar 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W92/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.