Geolocation mapping of network devices
US8180887B2 · kind B2 · utility
3Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A geographic location of a network device is determined using response delay times from internet servers used as landmarks. A coordination server provides to a client a list of area landmark servers (ALS) with known geographic locations. The client probes ALSs, measures response delays, and provides results to the coordination server. The coordination server then provides to the client a list of additional city landmark servers (CLS) within the area. The client probes the CLSs and provides results to the coordination server which then determines the geographic location of the client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.