5G wireless backhaul networks: challenges and research advances

By Xiaohu Ge, Hui Cheng, Mohsen Guizani, T. Han. IEEE Network, 2014

598 citations recorded by the source corpus.

5G networks are expected to achieve gigabit-level throughput in future cellular networks. However, it is a great challenge to treat 5G wireless backhaul traffic in an effective way. In this article, we analyze the wireless backhaul traffic in two typical network architectures adopting small cell and millimeter wave communication technologies. Furthermore, the energy efficiency of wireless backhaul networks is compared for different network architectures and frequency bands. Numerical comparison results provide some guidelines for deploying future 5G wireless backhaul networks in economical and highly energy-efficient ways.

Subfields: Electrical and Electronic Engineering, Media Technology

View Paper: https://www.semanticscholar.org/paper/d789b3a5f17a57e0af7a1f6a0404e5f715691fc1

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Citations in the corpus

The Application of MIMO to Non-Orthogonal Multiple Access (2015, methodology): “It is envisioned that small cells will be ultra-densely deployed in 5G networks, in which low-cost and low-power small-cell base stations will be used [14].”
Software-Defined Network Function Virtualization: A Survey (2015, background): “Defined Networking (SDN) and as more abstractions are introduced into network architectures [9]–[11], the trend of integrating SDN with NFV (the software-defined NFV architecture) to achieve various network control and management goals has seen an noticeable growth.”
Ultra-Dense Networks: A Survey (2016, background): “[32] studied the throughput and energy efficiency of 5G wireless backhaul networks.”
5G Backhaul Challenges and Emerging Research Directions: A Survey (2016, background): “In another work, mmWave fo r backhaul is investigated from an energy consumption point of view comparing different spectrum bands and deployment scenarios [95].”
Indoor Office Wideband Millimeter-Wave Propagation Measurements and Channel Models at 28 and 73 GHz for Ultra-Dense 5G Wireless Networks (2015, background): “If the 28 GHz and 73 GHz bands eventually become unlicensed similar to the 60 GHz band, the wide range of applications and events they could support would tremendously reduce the load on cellular and backhaul networks as we move into the age of Internet of Things (IoT) [16].”
Millimeter Wave Communications for Future Mobile Networks (2017, background): “munication is particularly well-suited for scenarios with good channel conditions, such as short-range small cell access and line-of-sight backhauling in mobile networks [16], [18]–[20].”
5G Internet of Things: A survey (2018, methodology): “To guarantee the QoS for devices in 5G-IoT, a number of HetNet solutions have been proposed: a Massive MIMO based Hetnet has been developed in [46] to build a large-scale MIMO link for backhauling.”
5G Ultra-Dense Cellular Networks (2015, methodology): “Considering the backhaul traffic challenge in 5G small cell networks, the central and distributed wireless b ackhaul network architectures were compared in [9].”
User-Centric Cell-Free Massive MIMO Networks: A Survey of Opportunities, Challenges and Solutions (2021, background): “Finally, in Table IV we summarize some advantages and current drawbacks of selected solutions targeting fron-thaul links.”
FSO-Based Vertical Backhaul/Fronthaul Framework for 5G+ Wireless Networks (2016, background): “This distributed solution has been shown to have a higher energy efficiency than a centralized solution where the SBSs traffic is delivered to a macro-BS [7].”
A Survey of Multi-Access Edge Computing in 5G and Beyond: Fundamentals, Technology Integration, and State-of-the-Art (2019, unknown): “is, the wireless backhaul could be congested due to the high burden of huge data sharing [35].”
Energy-Efficient Design of MIMO Heterogeneous Networks With Wireless Backhaul (2015, background): “On the other hand, the power consumption of backhauling operations at small cell access points (SAPs ) might be comparable to the amount of power necessary to operate macro base stations (MBSs) [27]–[29].”
Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models (2017, methodology): “An analysis of the wireless backhaul trafﬁc at 5.8, 28, and 60 GHz in two typical network architectures showed that spectral efﬁciency and energy efﬁciency increased as the number of small cells increased [48], and backhaul RF measurements and models at 73 GHz were made in New York City [20], [49].”
A survey on 5G: The next generation of mobile communication (2015, methodology): “Interestingly, the 5G networks will not be a mere enhancement of 4G networks in terms of additional capacity; they will encompass a system architecture visualization, conceptualization, and redesigning at every communication layer [51].”