发明名称 |
User paging for mobile satellite communications |
摘要 |
A method of initiating communication between a ground station and a mobile handset through a satellite beam includes the steps of transmitting a forward signal indicative of a fixed geographic area covered by each of a plurality of satellites on at least a periodic basis. The location of said mobile handset is registered by storing at least one variable geographic value associated with said forward control signal at said mobile handset. A reverse signal is transmitted from said mobile handset to said ground station which is indicative of a geographic area where said mobile handset was located during registration. At least one variable geographic value associated with said reverse signal is stored in a database accessible to said ground station. The mobile handset determines whether a currently transmitted forward signal matches said variable geographic value stored. If a match is not found, the current location of said mobile handset is re-registered. The ground station determines which of said satellite beams should initiate a call signal to said mobile handset based upon said variable geographic value stored in said database for said mobile handset.
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申请公布号 |
US5619209(A) |
申请公布日期 |
1997.04.08 |
申请号 |
US19940181932 |
申请日期 |
1994.01.14 |
申请人 |
TRW INC. |
发明人 |
HORSTEIN, MICHAEL;HO, HAU H. |
分类号 |
H04B7/26;H04B7/185;H04B7/204;H04Q7/22;H04Q7/24;H04Q7/26;H04Q7/30;H04Q7/34;(IPC1-7):H04B7/185 |
主分类号 |
H04B7/26 |
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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