In this paper, an analytical model for Infrastructure based Cognitive Radio Networks is proposed and its performance evaluated. The architecture is composed of multiple cognitive radio base stations, and the state of the system depends on the activity of primary and secondary users in each cell. An analytical model for Cognitive Radio Network with multiple cells is developed and performance metrics like the probabilities of dropping and blocking for primary and secondary users as well as forced termination and forced frequency handoff for secondary users are investigated. The analytical model is also verified with simulations. The elementary events cause changes in the current state of the whole system. Cell dwell time and frequency holding time are used to determine the handoff behavior of the users. The proposed model is analyzed via simulations to estimate the performance metrics. Numerical results are obtained with different request rates, frequency holding times, cell dwell times, and also under heterogeneous cell load.
[1]
Qing-An Zeng,et al.
Traffic Modeling and Analysis of Wireless and Mobile Cellular Systems Using Smart Antennas
,
2005
.
[2]
Tuna Tugcu,et al.
Analytical modeling and resource planning for cognitive radio systems
,
2012,
Wirel. Commun. Mob. Comput..
[3]
D.I. Isler,et al.
An entire architecture for Cognitive Radio Networks
,
2008,
2008 IEEE 16th Signal Processing, Communication and Applications Conference.
[4]
Hai Xie,et al.
Priority handoff analysis
,
1994,
Int. J. Wirel. Inf. Networks.
[5]
Ian F. Akyildiz,et al.
A survey on spectrum management in cognitive radio networks
,
2008,
IEEE Communications Magazine.
[6]
Ness B. Shroff,et al.
Efficient Network Utilization for Multimedia Wireless Networks
,
2000,
Mobile and Wireless Communication Networks.