Method and apparatus of computing location of safe exit for moving range query in road network
US9752888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2014 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3679
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method of computing the result of a moving range query and the locations of safe exits in a road network and, more particularly, to a method and apparatus that receive a range query request from a moving client terminal and that provide a range query result, a safe region in which the range query result is maintained, and the locations of safe exits. The present invention provides a method in which a server provides a first query processing result and information about a safe region that provides a range query result identical to the first query result, thereby minimizing communication between a server and a client terminal when the client terminal is located in the safe region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.