Energy-aware infrastructure placement for secure communication

Abstract

Physical layer security is attracting more and more attention due to its inherent channel properties, while the increasing computing ability is not the obstacle for the traditional encryption any longer. In this paper, we study the base station (BS) and relay station (RS) placement problem in a cooperative secure communication system. Moreover, the system energy consumption problem also has been considered, and an energy-aware infrastructure placement for secure communications (EIPSC) scheme is proposed. Based on the analysis results of different candidate position of the security performance, location of the BS is determined and some imperative RSs are placed to guarantee the eavesdropped subscribers' secure communication. To decrease the system energy consumption, we propose a conception of sharing set of RS in order to place the RS as few as possible. During the BS and RS placing as well as adjusting procedure, renewable energy is also been considered to reduce dirty-energy consumption. Through computational experiments, we show our proposed algorithm can get better performance than the traditional placement algorithm not only at the system security guarantee but also at the system energy saving.