Abstract
The fifth-generation (5G) technology promises to provide agile, scalable, and programmable network services in order to respond to the myriad of applications and connected devices of vertical industries. It aims to boost the network capacity, throughput, energy, and spectral efficiencies while reducing latency for sub-milliseconds. In order to fulfill the diverse requirements of industrial Internet of Things (IIoT) applications, drastic changes have been proposed by several telecommunication bodies for the radio access network (RAN) and core. In this chapter, we aim to study comprehensively the 5G architectural frameworks proposed by telecommunication bodies and standards for public and private 5G networks. Furthermore, this chapter provides an in-depth study on the key 5G enabling technologies such as software-defined network (SDN), network functions virtualization (NFV), network slicing, artificial intelligence/machine learning (AI/ML), and multi-access edge computing (MEC). Moreover, 5G simulators and projects are explored and compared considering features, advantages, and limitations.
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Notes
- 1.
Options 6 and 8 have been withdrawn of further study by 3GPP due to the various limitations on compatibility between the 5G RAN and the EPC.
- 2.
L2 represents the MAC, radio link control (RLC), and packet data convergence protocol (PDCP). In addition, L3 represents the radio resource control (RRC).
- 3.
Network densification concept increases the number of BSs in a given area.
- 4.
The fronthaul and backhaul links are considered as Ethernet connection.
- 5.
The CU might be deployed as a dedicated hardware or as part of the MEC.
- 6.
The separation of CU-CP and CU-UP occurs via E1 interface.
- 7.
ONF is the consortium for SDN standardization.
- 8.
OpenFlow is the most popular SDN protocol that defines a standard API to separate logically the controller and network devices. It offers an API between the SDN controller and the network devices to communicate over TCP/IP stack for any network topology.
- 9.
The northbound interface provides a network abstraction to the applications and the management systems. Various open-source projects have been proposed for the northbound APIs including RESTFul and Frenetic.
- 10.
FAPI protocol is standardized by the small cell forum in [217].
- 11.
nFAPI protocol is standardized by small cell forum in [219].
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Alfaqawi, M. et al. (2023). A Comprehensive Study on 5G: RAN Architecture, Enabling Technologies, Challenges, and Deployment. In: Matin, M.A. (eds) A Glimpse Beyond 5G in Wireless Networks. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-031-13786-0_1
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