Resource Spreading for Improved Spectral and Energy Efficiency of mmWave D2D-Enabled Cellular Networks

In this paper, we investigate the impact of Resource Spreading on the capacity of mmWave based Device-to-Device (D2D) overlay networks. We aim to improve the spectral efficiency of these networks under low load conditions at Base Station (BS). Our proposed Resource Spreading scheme utilizes the fact that during a certain period of time, the number of active D2D pairs under a BS may be much lower than what is the maximum allowed, and available Resource Blocks (RBs) may be under-utilized. We present a stochastic geometry based framework to analytically evaluate the proposed Resource Spreading scheme for mmWave D2D overlay networks. Extensive simulations and analysis reveal that our proposed Resource Spreading scheme shows an improvement in network performance by allocating RBs efficiently, in terms of both spectral efficiency and energy efficiency.