发明名称 |
Method and system for position determination using video dial tone |
摘要 |
A method for determining and reporting the position of a mobile unit to a third party via a video dial tone (VDT) network is described. The method is directed for use in a wireless communication system having at least one registration area including at least one control unit and at least one base station having a corresponding coverage area. For each of the base stations in a registration area, a plurality of analog and/or TDMA RF measurements are determined, including its link budget, for a predetermined plurality of distances and directions. These measurements are modeled as scaled contoured shapes having minimum and maximum boundaries which are used to define a bounding polygon area to describe the position of a mobile station in terms of minimum and maximum error estimate. The video dial tone network includes an interactive video delivery system, a set top terminal and a video monitor.
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申请公布号 |
US5768686(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19960616229 |
申请日期 |
1996.03.15 |
申请人 |
U S WEST, INC. |
发明人 |
LEBLANC, FREDERICK W.;ROHRER, CHRISTOPHER S. |
分类号 |
G01S1/04;G01S5/00;G01S5/02;G01S5/12;G01S19/09;G01S19/46;H04W64/00;(IPC1-7):H04Q7/06 |
主分类号 |
G01S1/04 |
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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