System-level simulation platform with interference avoidance for Device-to-Device communication underlaying cellular system

Device-to-Device (D2D) communication is the technology enabling user equipment (UE) to directly communicate with each other without help of evolved nodeB (eNB) which caters to the demand for high spectrum efficiency. This work focuses on the hybrid network which contains multiple Cellular UEs and D2D UEs. D2D communication shares up-link resource with cellular system and improves the performance of the entire network. However, by introducing D2D communication into cellular systems, the mutual interference between D2D links and cellular links may be severe. We accordingly develop a system-level simulation platform based on interference avoidance scheme. It provides a tool to observe the interference and analyse the performance of hybrid network. The simulation results prove that the coexistence of the cellular and D2D links will bring obvious contribution to the sum capacity of hybrid network.