Deployment Optimization For Airship Platforms In Near Earth Space

With the development of future communication system, the demand for highcapacity has gained many attentions. An emerging solution is offered by airshipplatforms operating in near earth space to provide communication facilities that canexploit the best features of both terrestrial and satellite schemes, which plays anincreasingly important role in the future wireless network. Optimal methods fordeployment of airship platforms operating in near earth space to improve theperformance of network become widely concerned hot issue. Thus, this thesis hasdeeply studied models of deployment and algorithms of optimization for airshipplatforms in near earth space.First of all, in order to achieve fair connections for users and improve performancein the system, this paper has presented an optimal model of deployment for airshipplatforms in near earth space based on maximum entropy and minimum delay, solvedby modified genetic algorithm. Experimental results show that the purpose ofon-demand deployment for airship in near earth space can be achieved and the modifiedgenetic algorithm can approximately converge to global optimal solutions.Secondly, due to the limited energy of airship platforms in near earth space, thispaper has presented an energy-efficient model of deployment for airship platforms innear earth space, which can be optimized by using deterministic annealing algorithm toobtain the minimum energy consumption. Simulation results demonstrate that theproposed method can get the goal of the minimum energy consumption and achieve anear optimal deployment of airship platforms, which can achieve good convergenceperformance.Finally, considering the energy consumption, coverage and connectivity of airshipplatforms in near earth space, this paper has proposed a mixed model of deployment forairship platforms in near earth space, which can be expressed as potential game solvedby utilizing a sequential spatial adaptive play algorithm to achieve distributed results.Simulation results illustrate that the proposed method can achieve Nash equilibrium andthe optimal deployment of airship platforms, which can obviously improve convergencespeed.