Interference Management of D2D Communication in 5G Cellular Network

Wireless communication have grown rapidly for the last decades, and the number of mobile equipment have increased exponentially. Increasing the network capacity has been one of the major challenges for 5G networks. The limited of radio spectrum in wireless network and the ever increase of network users leaves the communication channels so crowded. This caused congested traffic to one base station (especially in urban areas) and introduces interference in the entire communication system thereby degrading the Quality of Service (QoS) and system capacity. In this paper, analysis of the usage of Device-to-Device (D2D) communications in HetNet which consists of macro and small cells to reduce interference levels in the system will be conducted through the simulation. D2D is a technology in which neighboring mobile devices communicate directly with each other without a Base Station (BS) involvement. They can improve network performance but they also complicate Interference Management (IM) because there are no dedicated resources available for them; they are sharing same radio resources (RRs) with Cellular User (CU). This paper is proposing a scheme of interference management for the HetNet-based multi-tier cellular network on a given D2D feasible set to better connect QoS for both cellular connections of (small cell and macro cell) and D2D connections while sharing resources. It is shown that an optimized deployment scheme can increase the efficiency of Ultra-Dense Networks (UDN) and satisfy com QoS requirements. The results will be compared to the neighbor-based scheme.