发明名称 |
Geo-location using distributed composite GPS signals |
摘要 |
A wireless communication arrangement provides GPS coverage in areas where GPS satellites or macrocells are not directly detectable by a mobile station that is used for placing an emergency call. A detector detects a plurality of GPS satellites and provides a composite GPS signal that is re-radiated through a distributed antenna system to provide GPS signal coverage within a selected area such as inside of a building. The signal reach at each re-radiator assembly is individually controlled to keep the composite GPS signal coverage area within a selected limit. A mobile station used to place an emergency call reports the composite GPS signal information in a data call or SMS message that is associated with the emergency voice call. That information is then used for GEO-location to determine the location of the mobile station. A disclosed example includes a technique for addressing a scenario where a mobile station directly detects a satellite and detects the composite GPS signal.
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申请公布号 |
US7602335(B2) |
申请公布日期 |
2009.10.13 |
申请号 |
US20070770955 |
申请日期 |
2007.06.29 |
申请人 |
ALCATEL-LUCENT USA INC. |
发明人 |
PAN VIC |
分类号 |
G01S19/11;H04B7/185;G01S19/17;G01S19/40;G01S19/46 |
主分类号 |
G01S19/11 |
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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