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

Jaemin JEUNG  Seungmyeong JEONG  Jaesung LIM  

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)
cognitive radio,  outband sensing,  IEEE 802.11h protocol,  dynamic frequency selection,  medium access control,  

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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.