Cognitive Radio Simultaneous Spectrum Access/ One-shot Game Modelling

TL;DR

This paper models simultaneous spectrum access in cognitive radio environments using one-shot noncooperative game theory, exploring equilibrium states and heterogeneity among users through novel equilibrium concepts.

Contribution

It introduces the joint Nash-Pareto equilibrium to capture heterogeneity among cognitive radios and models access scenarios with continuous and discrete Cournot-based games.

Findings

Equilibrium states identified for two and three user scenarios

Heterogeneity among users affects equilibrium outcomes

Numerical simulations demonstrate possible spectrum access configurations

Abstract

The aim of this work is to asses simultaneous spectrum access situations that may occur in Cognitive Radio (CR) environments. The approach is that of one shot, noncooperative games describing CR interactions. Open spectrum access scenarios are modelled based on continuous and discrete reformulations of the Cournot game theoretical model. CR interaction situations are described by Nash and Pareto equilibria. Also, the heterogeneity of players is captured by the new concept of joint Nash-Pareto equilibrium, allowing CRs to be biased toward different types of equilibrium. Numerical simulations reveal equilibrium situations that may be reached in simultaneous access scenarios of two and three users.