NDLI: Scheduling Model for Cognitive Radio

Content Provider	IEEE Xplore Digital Library
Author	Ping Zhu Jinglong Li Xufa Wang
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei (Ping Zhu)
Abstract	The priority queue model divides CR (cognitive radio) system users into primary user and secondary user. The primary user has preemptive priority over secondary user, while the same priority level users are FIFO served. This paper models the CR system based on scheduling technology. The secondary users are further divided into different priority levels. A hybrid priority dynamic policy, which indicates primary user's preemptive priority and secondary user's nonpreemptive priority, is developed to reduce spectrum switch overhead during spectrum leasing process. Theoretical analyzing shows that hybrid priority reduces the spectrum switch overhead and the hybrid priority improvement is a non-negative mono-increasing function of priority level. Based on the proposed policy, CR scheduling model is built and CR scheduling rule is provided and proved. Experimental comparison between CR scheduling and priority queue shows that CR scheduling gets a smaller weighted staying time sum than priority queue and the improvement increases as system becomes more congested.
Starting Page	1
Ending Page	6
File Size	699071
Page Count	6
File Format	PDF
ISBN	9781424423019
DOI	10.1109/CROWNCOM.2008.4562478
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-15
Publisher Place	Singapore
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	priority queue Laboratories Switches Dynamic scheduling Random processes Cognitive radio Helium Computer science Communication system software Processor scheduling cognitive radio Chromium CR schedule
Content Type	Text
Resource Type	Article

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