发明名称 |
Deriving location information about a communicating entity |
摘要 |
Location information about a communicating entity (41), in particular a mobile entity, is derived by identifying intermediate nodes (42) along the communication path being used by the entity, and then looking up, in a database (44), the geographic significance of at least one of these nodes when considered in a direction along the communication path towards the entity of interest. Preferably, account is taken of any identified downstream/upstream nodes to refine the geographic significance of a node. The geographic significance information can be compiled by taking location fixes at a plurality of endpoint locations and associating the location data thus obtained with the intermediate nodes traversed when communication is effected from the corresponding endpoint locations.
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申请公布号 |
US2001041576(A1) |
申请公布日期 |
2001.11.15 |
申请号 |
US20010821143 |
申请日期 |
2001.03.29 |
申请人 |
I'ANSON COLIN;HAWKES RYCHARDE JEFFERY;MCDONNELL JAMES THOMAS EDWARD;THOMAS ANDREW;WATERS JOHN DERYK;CROUCH SIMON EDWIN |
发明人 |
I'ANSON COLIN;HAWKES RYCHARDE JEFFERY;MCDONNELL JAMES THOMAS EDWARD;THOMAS ANDREW;WATERS JOHN DERYK;CROUCH SIMON EDWIN |
分类号 |
H04L12/28;H04L12/56;H04W64/00;(IPC1-7):H04Q7/20 |
主分类号 |
H04L12/28 |
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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