发明名称 |
Mobile terminals and methods for estimating GPS time based on timing of information from a wireless communication system |
摘要 |
A mobile terminal generates an estimate of GPS time. The mobile terminal includes a cellular receiver, a GPS receiver, and a processor. The cellular receiver is configured to receive communication signals from cells in a wireless communication system. The GPS receiver receives GPS signals and determines a GPS time reference therefrom. The processor estimates a cell time reference from the received communication signals, and generates cell-to-GPS timing data that represents a time offset between the cell time reference and the GPS time reference. The processor then estimates GPS time based on a time indicator portion of a received communication signal and the cell-to-GPS timing data. The estimated GPS time may be used by the GPS receiver to acquire GPS signals.
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申请公布号 |
US2005070223(A1) |
申请公布日期 |
2005.03.31 |
申请号 |
US20030672547 |
申请日期 |
2003.09.25 |
申请人 |
CAMP WILLIAM O.;MICHALAK GERALD;BLOEBAUM L. SCOTT |
发明人 |
CAMP WILLIAM O.;MICHALAK GERALD;BLOEBAUM L. SCOTT |
分类号 |
G01S1/00;G01S19/25;(IPC1-7):H04B7/19 |
主分类号 |
G01S1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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