Open AccessSpectrum occupancy of cognitive radio networks: a queueing analysis using retrial queue
Author(s) -
Chang Woan Sun,
Jang Won Mee
Publication year - 2014
Publication title -
iet networks
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 21
eISSN - 2047-4962
pISSN - 2047-4954
DOI - 10.1049/iet-net.2012.0190
Subject(s) - cognitive radio , queueing theory , retrial queue , computer network , computer science , occupancy , queue , telecommunications , queueing system , wireless , engineering , architectural engineering
The authors apply the preemptive priority queueing analysis to cognitive radio networks. Using the proposed analytical model, the authors can quantify the delay, throughput and spectrum occupancy of cognitive radio networks. Cognitive users’ packet arrivals form a retrial queue with a proper choice of the retrial rate. The authors illustrate numerical results of the delay, throughput and spectrum occupancy with respect to retrial rate, spectrum sensing time and primary user's busy rate.