Title:
移動通信システム、移動通信端末及びそれらに用いるセルサーチ方法並びにそのプログラム
Document Type and Number:
Japanese Patent JP4306480
Kind Code:
B2
Abstract:
The invention provides a mobile communication terminal that allows the time for recognizing the scrambling code to be shortened. The mobile communication terminal (1) 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 (22), if establishment of slot synchronization is completed employing a slot synchronization part (14). The control part (22) acquires the information required for inverse spreading of the predicted scrambling code from a memory (23), and generates a code for inverse spreading. A predicted scrambling code recognition part (17) inputs the code for inverse spreading shifted in a unit of slot from the control part (22), and attempts inverse spreading. The control part (22) 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 (17).
More Like This:
| WO/2002/054618 | PARAMETER ESTIMATION FOR ADAPTIVE ANTENNA SYSTEM |
| JP2003318777 | RECEIVER AND METHOD FOR RANDOM ACCESS SIGNAL |
| WO/2002/043293 | OFDM COMMUNICATION APPARATUS AND OFDM COMMUNICATION METHOD |
Inventors:
Kenichi Kato
Application Number:
JP2004027431A
Publication Date:
August 05, 2009
Filing Date:
February 04, 2004
Export Citation:
Assignee:
NEC
International Classes:
H04B1/707; H04B1/7083; H04B7/26; H04W56/00; H04W64/00; H04W76/00; H04W76/02; H04W92/10
Domestic Patent References:
| JP2001061176A | ||||
| JP2003199137A | ||||
| JP2003134569A |
Attorney, Agent or Firm:
▲柳▼川 信