发明名称 |
Method, apparatus and system for GPS time synchronization using cellular signal bursts |
摘要 |
A system, apparatus and corresponding method by which to synchronize to a time reference a main module of a device-a main module such as global positioning system (GPS) receiver-using a cellular communication signal received by a cellular module also included in the device. To synchronize the main module to the reference time, the invention provides a method including the steps of: having the cellular module respond to the cellular communication signal by providing to a clock module of the main module a trigger pulse derived from the data component of the cellular communication signal, and also by providing to the main module information relating the trigger pulse to a universal time. The main module is then able to resolve a value for time based on the information relating the trigger pulse to a universal time and the trigger pulse. |
申请公布号 |
US7085546(B2) |
申请公布日期 |
2006.08.01 |
申请号 |
US20030720041 |
申请日期 |
2003.11.19 |
申请人 |
NOKIA CORPORATION |
发明人 |
SYRJAERINNE JARI;VALIO HARRI;ALANEN KIMMO |
分类号 |
G01S19/23;H04B1/06;G01S1/00;G04G5/00;G04G7/02 |
主分类号 |
G01S19/23 |
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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