DocumentCode :
3159976
Title :
Cross-layer interference minimization-oriented channel assignment in IEEE 802.11 WLANs
Author :
Fan, Dian ; Wang, Xianbin ; Mi, Penghui
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada
fYear :
2011
fDate :
11-14 Sept. 2011
Firstpage :
1083
Lastpage :
1087
Abstract :
IEEE 802.11 wireless local area networks (WLANs) are widely deployed nowadays in home and urban areas. To solve the problem of radio frequency scarcity, interference minimization-oriented channel assignment has been very much explored at PHY layer. However, the effect of time domain simultaneous transmission on the neighboring interference is rarely considered. In this paper, we propose a cross-layer channel assignment algorithm for newly deployed access point (AP) initial setting up in high-density WLANs. Compared to the conventional algorithms which only focus on PHY layer, our proposed algorithm jointly analyzes the time domain overlap from MAC layer and frequency domain overlap at PHY layer to minimize the neighboring interference, which is the fatal reason of network Quality of Service (QoS) reduction. We also modify the beacon frame to support real-time information collection for channel assignment. Simulation results are provided to validate the proposed cross-layer channel assignment algorithm.
Keywords :
channel allocation; quality of service; radiofrequency interference; time-frequency analysis; wireless LAN; IEEE 802.11 WLAN; PHY layer; access point; beacon frame; cross-layer channel assignment algorithm; cross-layer interference minimization; frequency domain overlap; neighboring interference; quality of service reduction; radio frequency scarcity; time domain simultaneous transmission; wireless local area network; Algorithm design and analysis; IEEE 802.11 Standards; Interference; OFDM; Probability distribution; Time domain analysis; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2011 IEEE 22nd International Symposium on
Conference_Location :
Toronto, ON
ISSN :
pending
Print_ISBN :
978-1-4577-1346-0
Electronic_ISBN :
pending
Type :
conf
DOI :
10.1109/PIMRC.2011.6139664
Filename :
6139664
Link To Document :
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