Performance of resource sharing and borrowing in opportunistic access systems
by Ognen Ognenoski; Bisera Jankuloska; Vladimir Atanasovski; Liljana Gavrilovska
International Journal of Autonomous and Adaptive Communications Systems (IJAACS), Vol. 7, No. 4, 2014

Abstract: This study investigates opportunistic resource-sharing schemes from a traffic viewpoint. Resources (channels) are shared between primary users (PUs) and secondary users (SUs) operating on the same channel set at a base station level. PUs have pre-emptive channel access, whereas SUs opportunistically use available channels. This study introduces three sharing schemes to increase resource availability and improve SUs' performances. The sharing schemes evaluations are carried through extensive simulations analysing the probability of blocking, probability of fully serving and probability of partially serving SUs as relevant performance metrics. Furthermore, this study gives a benefit curving analysis outlining the quantitative benefit of the sharing scheme with the highest performances. All schemes are evaluated for variable secondary traffic (i.e. traffic intensity and load distributions) and fixed primary traffic as input parameters within the system. The results show that notable metric's improvement (benefit) can be achieved by using the scheme with the highest performances regardless of the system conditions.

Online publication date: Sat, 14-Feb-2015

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