User-Centric Clustering for Designing Ultradense Networks: Architecture, Objective Functions, and Design Guidelines

Abstract

User-centric clustering is becoming an innovative design principle for ultra dense networks (UDNs) that supports dynamically fluctuating adaptive network topologies. In this article, we introduce the user-centric UDN (UC-UDN) architecture and provide a tutorial on user-centric clustering design by generalizing the problem under practical constraints. In the context of user-centric clustering, we briefly present diverse promising methods, representative constraint options as well as provide a pair of case studies on design tradeoffs. Finally, the salient future directions of UC-UDNs are identified.

Small Cell Deployment Challenges in Ultradense Networks: Architecture and Resource Management

“…This will accommodate more users to available resource unit of a given BS and thus yield huge gains. These networks are robust and are high in reliability, throughput and Energy Efficiency [19][20].…”

User-Centric Cooperative Transmissions-enabled Handover for Ultra-Dense Networks

“…Also, the handover in user-centric cooperative transmissions involves the dynamic change of serving BSs set [10]. At the same time, the dynamic change of BSs set may upsurge signaling overhead in the core network and undoubtedly hinder the gain provided by user-centric cooperative transmissions [29], [30]. Accordingly, it is vital to characterize the user-centric cooperative handover with spatial randomness of BSs for 5G dense networks.…”

Spatial correlation modeling and ergodic capacity analysis of networks with overlapping conflict

“…The explosive growth of mobile devices and the popularity of immersive interactive services (e.g., augmented reality/virtual reality) have led to a continuous increase in teletraffic. To alleviate this problem, network densification greatly improves the capacity of the network by deploying a large number of transmission points (TPs) 1‐3 to form the ultra‐dense network (UDN). UDN can be applied to various hot spots, such as stadiums, shopping malls, schools, and offices, which aims to provide high rates, low latency, and seamless coverage in 5G and even B5G networks 1‐3 .…”

“…To alleviate this problem, network densification greatly improves the capacity of the network by deploying a large number of transmission points (TPs) 1‐3 to form the ultra‐dense network (UDN). UDN can be applied to various hot spots, such as stadiums, shopping malls, schools, and offices, which aims to provide high rates, low latency, and seamless coverage in 5G and even B5G networks 1‐3 . Future cellular networks have been featured with the dense deployment of small TPs that exploit spatial frequency reuse to enrich spectrum resources 4 …”