Method and system for protecting a wireless network
US8156539B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2002 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for protecting a wireless network by establishing virtual walls to confine wireless connection to devices located within a three-dimensional region. A network of wireless monitoring nodes is established at physical locations. The monitoring nodes are arranged in a frame of reference and determine locations of one another and of mobile nodes by conducting measurements of either roundtrip travel time of signals sent and received or of differences in the times of receiving a signal at different known locations. Initially mobile nodes are placed, sequentially, in a triangle at a boundary to be established as a virtual wall for confining communication within the wireless network. The mobile node locations are then stored. The position of a device requesting admission to the wireless network is similarly determined and, if within the established virtual walls, the device may be admitted to the network. Admission is otherwise denied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.