NDLI: Load balancing probabilistic spectrum handoff for cognitive radio networks

Content Provider	IEEE Xplore Digital Library
Author	Tayel, A.F. Rabia, S.I.
Copyright Year	2015
Description	Author affiliation: Dept. of Eng. Math. & Phys., Alexandria Univ., Alexandria, Egypt (Tayel, A.F.; Rabia, S.I.)
Abstract	Spectrum mobility in cognitive radio networks aims to enhance spectrum utilization by allowing unlicensed secondary users (SUs) to access the licensed frequency bands of the primary users (PUs). It also helps to vacate the channel from the SU when the licensed PU arrives at the channel, and finds a suitable channel for the interrupted SU. In this paper, we propose a probabilistic approach to determine the target channel for the interrupted SUs. This approach is analysed based on the preemptive resume priority (PRP) M/M/1 queuing network model to evaluate and compare the latency performance and load-balancing of connection-based spectrum handoff in cognitive radio networks. The analytical formulas obtained for the extended data delivery time and the channel busy probability are used to compare the proposed approach with other spectrum handoff strategies based on the target channel sequences specified in the IEEE 802.22 wireless regional area networks (WRAN) standard (the always stay and always change). The results reveal the advantage of the probabilistic approach (based on the total arrival rate to each channel) in load balancing in terms of the variance of the channels' busy probabilities.
Starting Page	1
Ending Page	8
File Size	3898656
Page Count	8
File Format	PDF
ISBN	9781510810600
DOI	10.1109/SPECTS.2015.7285277
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Society for Modeling & Simulation International
Subject Keyword	queueing theory load balancing Interrupters preemptive priority Probabilistic logic Cognitive radio probabilistic approach Analytical models connection based Load management Delays spectrum handoff Queueing analysis
Content Type	Text
Resource Type	Article

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