发明名称 |
Satellite-based cellular messaging system and method of operation thereof |
摘要 |
A satellite-based, world-wide cellular messaging system transmits paging messages to pagers. The messages are transmitted at unique times, on unique frequencies, and into uniquely identified cells according to a plan which is periodically revised and transmitted in advance to the pagers. Battery resources in the satellites and pagers are thereby conserved, and interference between transmissions to adjacent cells is minimized.
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申请公布号 |
US5613194(A) |
申请公布日期 |
1997.03.18 |
申请号 |
US19940317083 |
申请日期 |
1994.10.03 |
申请人 |
MOTOROLA, INC. |
发明人 |
OLDS, KEITH A.;VATT, GREGORY B.;KURBY, CHRISTOPHER N. |
分类号 |
H04B7/185;(IPC1-7):H04B7/185 |
主分类号 |
H04B7/185 |
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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