Department of Computer Science and Software Engineering, Auckland University of Technology, Auckland 1010, New Zealand.
Sensors (Basel). 2022 Jan 29;22(3):1063. doi: 10.3390/s22031063.
To supporting a wider and diverse range of applications, device-to-device (D2D) communication is a key enabler in heterogeneous cellular networks (HetCNets). It plays an important role in fulfilling the performance and quality of service (QoS) requirements for 5G networks and beyond. D2D-enabled cellular networks enable user equipment (UE) to communicate directly, without any or with a partial association with base stations (eNBs). Interference management is one of the critical and complex issues in D2D-enabled HetCNets. Despite the wide adoption of D2D communications, there are very few researchers addressing the problems of mode selection (MS), as well as resource allocation for mutual interference in three-tier cellular networks. In this paper, we first identify and analyze three key factors, namely outage probability, signal-to-interference and noise ratio (SINR), and cell density that influence the performance of D2D-enabled HetCNets. We then propose a dynamic algorithm based on a distance-based approach to minimize the interference and to guarantee QoS for both cellular and D2D communication links. Results obtained show that outage probability is improved by 35% and 49% in eNB and SCeNB links, respectively, when compared with traditional neighbor-based methods. The findings reported in this paper provide some insights into interference management in D2D communications that can help network researchers and engineers contribute to further developing next-generation cellular networks.
为了支持更广泛和多样化的应用，设备到设备 (D2D) 通信是异构蜂窝网络 (HetCNets) 的关键使能技术。它在满足 5G 网络及更高版本的性能和服务质量 (QoS) 要求方面发挥着重要作用。启用 D2D 的蜂窝网络使用户设备 (UE) 能够直接通信，无需与基站 (eNB) 进行任何或部分关联。干扰管理是启用 D2D 的 HetCNets 中的关键和复杂问题之一。尽管 D2D 通信得到了广泛采用，但很少有研究人员解决模式选择 (MS) 以及在三层蜂窝网络中对相互干扰进行资源分配的问题。在本文中，我们首先确定并分析了三个关键因素，即中断概率、信干噪比 (SINR) 和小区密度，这些因素会影响启用 D2D 的 HetCNets 的性能。然后，我们提出了一种基于基于距离的方法的动态算法，以最小化干扰并保证蜂窝和 D2D 通信链路的 QoS。与传统的基于邻居的方法相比，当与传统的基于邻居的方法相比时，eNB 和 SCeNB 链路的中断概率分别提高了 35%和 49%。本文报告的研究结果提供了一些有关 D2D 通信中干扰管理的见解，有助于网络研究人员和工程师为进一步开发下一代蜂窝网络做出贡献。
