Research On The Spectrum Sharing Algorithm For Aviation Ad-Hoc Network Based On Game Theory

With the rapid development of wireless communication technology, networktechnology and related communication services, the scarcity of the radio spectrumresources which is originally limited increases. Besides, the exclusive spectrumallocation mode recently greatly reduces the spectrum utilization and exacerbates thetension of the spectrum resources. Cognitive radio spectrum sharing technologies canachieve the reuse of spectrum resources, and improve the spectrum utilizationeffectively.Aviation communication network is going to be a heterogeneous system, which ismade of the satellite-based network, the land-based network and the space-basednetwork，the main networking mode of space-based network is Ad hoc. However, thesharply increasing demand of aviation communication services result in saturation ofcommunication capacity and shortage of channel resources, and greatly block thedevelopment of aviation communication network, therefore, how to optimize theutilization of spectrum is brook no delay.In this paper, we applied Game theory into aviation Ad hoc network to optimize theutilization of spectrum based on thorough study of Game theory. According to the conditionthat more than one primary users and a secondary user share spectrum in aviation Adhoc network, we propose a spectrum sharing algorithm based on Cournot game model.According to the condition that more than one main users and a secondary user sharespectrum in aviation Ad hoc network, and at the same time, each primary user has twodifferent spectrum bands, we propose mixed game spectrum sharing algorithm based onCournot and Bertrand model.Simulation results show that two algorithms proposed can solve the problem ofspectrum sharing. The simulation results of spectrum sharing algorithm based onCournot game model show that: in the condition that we only take the payoff of theprimary user into account, no matter how the channel quality and spectrumsubstitutability parameter are, the use of spectrum sharing algorithm based on Cournotgame model has absolute advantage. However, if we take social benefits into account,the results will be as follows: at low signal to noise ratio, spectrum sharing algorithmbased on Bertrand game model is slightly dominant. But at high Signal to Noise Ratio,with the increasing of spectrum substitutability parameters, the spectrum sharing algorithm based on Cournot game model takes more and more advantage. And thesimulation results of mixed game spectrum sharing algorithm based on Cournot andBertrand model show that: the mixed spectrum sharing algorithm combines theadvantages of the Cournot and Bertrand Game model, so with the increasing ofspectrum substitutability parameters between the two bands, the payoff of primary usersalso increase and are greater than the payoff of the single game model based spectrumsharing algorithm.