Outband Sensing-Based Dynamic Frequency Selection (DFS) Algorithm without Full DFS Test in IEEE 802.11h Protocol

Jaemin JEUNG  Seungmyeong JEONG  Jaesung LIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.4   pp.1295-1296
Publication Date: 2012/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.1295
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011)
Category: 
Keyword: 
cognitive radio,  outband sensing,  IEEE 802.11h protocol,  dynamic frequency selection,  medium access control,  

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Summary: 
We propose an outband sensing-based IEEE 802.11h protocol without a full dynamic frequency selection (DFS) test. This scheme has two features. Firstly, every station performs a cooperative outband sensing, instead of inband sensing during a quiet period. And secondly, as soon as a current channel becomes bad, every station immediately hops to a good channel using the result of outband sensing. Simulation shows the proposed scheme increases network throughput against the legacy IEEE 802.11h.