Study On Security-Oriented Technology Of Power Allocation And Base Station Sleeping

Because of the broadcast feature of wireless cooperative network, the information can easily be eavesdropped. Although encryption in the higher layer of communication network do keep from this kind of issue in the early days, but it can no longer work in the day when new information technology develop faster and faster, especially the flourish of the great technology like cloud computing and big data. So, the purpose of this paper is to introduce physical layer security to wireless network, and try to guarantee the system security from the bottom of the communication layer. Two scenes will be discussed in this paper, one is power allocation in the wireless cooperative network, and the other is base station sleep mechanism.Specifically, in traditional mechanisms which make use of cooperative nodes to improve system capacity, the friendly jammer is considered as a node willing to help unpaid which is too idealistic. While in this paper, the friendship jammer is considered selfish, and wants to pursue interests. This paper first introduces the game theory and establishes a reasonable Stackelberg model between source and friendly jammer, and then analyzes the existence of equilibrium based on the utility of both sides. Later, this paper proposed a certain algorithm which can converge to the equilibrium. In addition, through simulation, this paper further demonstrates some properties of the game.Due to the fact that current mechanism is just some kind of blind pursuit of the lowest energy consumption of the system, that is to say, with little consideration of security features. This paper innovatively introduces security capacity for the judgment process of base station sleeping, which ensures system to remain in a safe sleep status. Moreover, an open source project named Hostapd is also introduced in this paper, based on which author has developed a demonstration platform. The purpose of this platform is to verify the mechanism discussed in this paper. Author then narrates the details of the demonstration platform, including the development environment, function definitions, logical architecture, development processes and functional testing, etc. At last, Simulation based on energy consumption model named EARTH shows the practical effect of security sleeping algorithm of this paper relatively in comparison with traditional solutions.