Meeting Energy-Efficient and QoS Requirements of 5G Using D2D Communications

TL;DR

This paper analyzes how device-to-device (D2D) communication can enhance energy efficiency and meet QoS requirements in 5G networks by evaluating its impact on throughput, delay, and outage probability.

Contribution

It provides a realistic analysis of D2D's energy efficiency benefits in 5G, considering both discovery and communication phases within a centralized management framework.

Findings

D2D improves energy efficiency in 5G scenarios

D2D reduces outage probability

D2D increases reachable throughput

Abstract

Device-to-device (D2D) communication is a promising technology for the future wireless systems. It allows direct communication between devices, which provides improvements in terms of delay, throughput and energy consumption. Therefore, it can contribute to achieving the ambitious requirements of future 5G wireless system. In this sense, energy efficiency has become a key requirement in the design of 5G technology. In this paper we analyze the energy-efficiency improvement provided by D2D communications in an overlaying scenario, in the context of a realistic wireless network system. This analysis takes into account the two D2D phases, discovery and communication. A centralized architecture is considered to manage discovery, which is a key phase on D2D communications. Numerical evaluation shows improvement in terms of energy-efficiency, reachable throughput and outage probability.