On the position-based resource-sharing for Device-to-Device communications underlaying cellular networks

We investigate the resource-sharing problem of Device-to-Device (D2D) communications underlaying the cellular network. The performance of D2D communications sharing the uplink channel of a cellular system is analyzed by first considering a single cell scenario for analytical tractability. Then we propose a position-based resource-sharing scheme for D2D communications underlying cellular system, and extend the performance analysis to multiple cells with Fractional Frequency Reuse (FFR). Numerical results reveal that the position-based scheme in conjunction with FFR provides a significant performance improvement.