发明名称 |
Method for utilizing a backup timing source when GPS becomes nonfunctional |
摘要 |
The present invention provides a method for utilizing a backup timing source in digital communication systems when GPS becomes nonfunctional. When a base station fails to receive an expected signal from a GPS satellite, a GPS failure timer is started. If the base station does not receive a signal from the GPS satellite prior to the expiration of the timer, the wireless communication system switches to a backup timing system, such as NTP (Network Time Protocol).
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申请公布号 |
US2007177605(A1) |
申请公布日期 |
2007.08.02 |
申请号 |
US20060342507 |
申请日期 |
2006.01.30 |
申请人 |
BENCO DAVID S;OVEREND KEVIN J;SHEEN BAOLING S;TRUE SANDRA L;VOIGHT KENNETH J |
发明人 |
BENCO DAVID S.;OVEREND KEVIN J.;SHEEN BAOLING S.;TRUE SANDRA L.;VOIGHT KENNETH J. |
分类号 |
H04L12/56;H04J1/16 |
主分类号 |
H04L12/56 |
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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