NDLI: Channel selection in cognitive radio networks: A new dynamic approach

Content Provider	IEEE Xplore Digital Library
Author	Kahvand, M. Soleimani, M.T. Dabiranzohouri, M.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Qazvin Azad Univ., Qazvin, Iran (Kahvand, M.; Soleimani, M.T.) \|\| Fac. of Comput. Sci. & Inf. Syst., Univ. Teknol. Malaysia (UTM), Skudai, Malaysia (Dabiranzohouri, M.)
Abstract	In Cognitive radio Networks unlicensed users are temporary visitors to the licensed spectrum, they may be required to vacate the spectrum when a licensed user reclaims it. This process has a large overhead for secondary users. This overhead includes the time required for sensing the spectrum and finding new channels, communication delay between secondary transmitter/receiver as well as packet loss. To decrease this overhead it is necessary to reduce the number of connection disruption in a channel as much as possible. To this end secondary users should have a proper decision about channel selection, during the spectrum handoff procedure. They have to select target channel so that the channel be available with a high probability and long idle period to avoid more disruptions. In this paper a dynamic channel selection approach is proposed to reduce connection disruption rate in cognitive radio networks. The preemptive resume priority (PRP) M/G/1 queuing network model is used to characterize the spectrum usage behaviors in secondary and primary users. Then, based on this model, a value is calculated for each channel to demonstrate how much a channel is suitable to selecting, when interrupt occurs. In this scheme the value assigned to each channel is depends on channel idle probability and average waiting time in the channel queue. Simulation results show that proposed scheme with the same data delivery rate and a slight increase in service time at the light traffics reduces the connection disruption rate of secondary users significantly.
Sponsorship	IEEE Malaysia ComSoc/VTS Joint Chapt.
Starting Page	407
Ending Page	411
File Size	188444
Page Count	5
File Format	PDF
ISBN	9781479915323
DOI	10.1109/MICC.2013.6805863
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-26
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Processor scheduling Channel selection Conferences Heuristic algorithms Preemptive resume priority (PRP) M/G/1 queuing network model FCC Connection disruption Sensors Secondary user Cognitive radio Resource management Cognitive radio networks
Content Type	Text
Resource Type	Article

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