QoS Based Distributed Rate-Split Scheme in Heterogeneous Cellular Networks

Abstract

In heterogeneous cellular networks (HCN), which consists of macrocells and numerous femtocells, efficient interference management schemes between macrocells and femtocells are so crucial to the overall system performance. To mitigate intercell interference in HCN, we propose a new rate-split transmission scheme which has the following characteristics. First, it supports user quality of service (QoS) with the least intercell interference. Second, it is a low complexity and distributed scheme using only Interference to Signal and Noise Ratio (ISNR). An evaluation confirms that the proposed scheme offers better performance than legacy schemes which are not considering user QoS.