Energy efficient and scalable D2D architecture design for public safety network

In cellular networks, the introduction of device-to device (D2D) technology could promote cell coverage and expand user experience. In this paper, we consider the scenario of relay assisted D2D communications, and developed an adaptive architecture for D2D communications to be used in emergency conditions. Such events are difficult to predict. Therefore, their situations are accompanied by uncertainty. The experiences of various emergency situations and the related research strongly indicate that reliable and robust communications could facilitate the much needed flow of information, and consequently help to reduce risk in decision making in emergency situations. This paper analyses some of the significant requirements, technology challenges, and solution approaches that must be in place in order to enable disaster networks and in particular, D2D communications, to meet public safety network requirements. In particular, we propose a clustering-procedure-based approach to the design of a system that integrates cellular and D2D operation modes depending on the availability of infrastructure nodes. Furthermore, we simulated the outage probability of the D2D enhanced network by quantifying energy parameters and Base station densities affect the performance of D2D enhanced network. Results shows that a low complexity threshold based clustering scheme can balance between energy consumption, coverage and formation speed.