Locating interfering devices in wireless networks using channel adaptation metrics
US7260361B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Aug 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0044
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and system relate to detecting an interfering device in a wireless network such as a wireless local area network (WLAN). In wireless networks using orthogonal frequency division multiplexing (OFDM) and adaptive bit loading (ABL), adaptive modulation information should be somewhat symmetric in uplink and downlink directions. By comparing modulation adaptations in the uplink and downlink directions of a communication channel between at least two terminals, identified differences can indicate the presence of a potential interferer in the wireless network. A location of the potential interferer can be estimated if a location of one or more network terminals experiencing interference is known or can be determined. An exemplary implementation for a device of the invention may be as an Access Point (AP) in the WLAN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.