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RESEARCH PRODUCT
Interference Estimation in IEEE 802.11 Networks
Ilenia TinnirelloGiuseppe Bianchisubject
business.industryComputer scienceSettore ING-INF/03 - TelecomunicazioniWiFiComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSPhysical layerKalman filterInterference (wave propagation)Network congestionExtended Kalman filterIEEE 802.11Control and Systems EngineeringPHYModeling and SimulationComputer Science::Networking and Internet ArchitectureElectronic engineeringWirelessElectrical and Electronic EngineeringbusinessKalman FilterComputer Science::Information Theorydescription
This article describes a technique for distinguishing and quantifying medium access control (MAC) and physical layer (PHY) interference in error-prone 802.11 networks. This technique, is fully distributed, allowing each station to estimate interference individually. The estimator is based on an extended Kalman filter coupled to a mechanism for revealing abrupt changes in state. The network state is a vector of two components, representing PHY interference, expressed in terms of channel-error rate, and MAC interference. Two distinct state models are considered. When PHY interference can be assumed to be constant for all stations, network congestion is expressed by the number of competing terminals.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-04-01 |