Paper Info
Title
Measuring channel occupancy for 802.11 wireless LAN in the 2.4 GHz ISM band
Abstract
In this paper we focus on measuring channel occupancy in the 2.4 GHz ISM band in a way that transmissions from Wireless LAN stations and other spectrum users can be distinguished. Most current 802.11 hardware does not offer methods to capture channel occupancy caused by non-802.11 transmissions accurately. We therefore combine a commodity 802.11 Wireless LAN card with an inexpensive 2.4 GHz RF transceiver IC which we use for spectrum measurements. We build a probabilistic model which allows to calculate the overall channel occupancy and to determine the fractions of 802.11 and non-802.11 activity. Our model covers adjacent channel interference, detects both narrow-band and wide-band interferers, and adapts to different signal strengths. We evaluate our approach in a test bed with controlled interference, estimate the achievable precision, and identify open problems.
Year
DOI
Venue
2012
10.1145/2387238.2387289
MSWiM
Keywords
Field
DocType
wireless lan card,probabilistic model,spectrum measurement,ghz ism band,overall channel occupancy,wireless lan station,adjacent channel interference,controlled interference,wireless lan,spectrum user,channel occupancy,measurement,wireless networks,interference,performance
Wireless network,Transceiver,Channel occupancy,Computer science,Adjacent-channel interference,ISM band,Computer network,Interference (wave propagation),Statistical model,Wireless lan
Conference
Citations 
PageRank 
References 
3
0.41
5
Authors
3
Name
Order
Citations
PageRank
Till Wollenberg1283.09
Sebastian Bader25114.66
Andreas Ahrens330.41