Title :
Spectrum Sensing Time Minimizing Access Delay of IEEE 802.11-Like MAC in Cognitive Radio Networks
Author :
Lee, Dong-Jun ; Wu, Hyuk
Author_Institution :
Korea Aerosp. Univ., Daejeon, South Korea
fDate :
11/1/2011 12:00:00 AM
Abstract :
In this letter, the relationship between spectrum sensing time and access delay is analyzed for a IEEE 802.11-like MAC of a cognitive radio network in which RTS-CTS exchange scheme is used by secondary users. The optimal spectrum sensing time and channel access probability are derived to minimize the access delay which is the summation of spectrum sensing time and contention delay.
Keywords :
cognitive radio; delays; probability; television standards; wireless LAN; IEEE 802.11-like MAC; RTS-CTS exchange scheme; channel access probability; cognitive radio network; contention delay; optimal spectrum sensing time; spectrum sensing time minimizing access delay; Analytical models; Cognitive radio; Data communication; Delay; IEEE 802.11 Standards; Sensors; Cognitive radio; RTS-CTS; contention-based random channel access; optimal spectrum sensing time;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.092011.111013
