A Survey on Low Latency Towards 5G: RAN, Core Network and Caching Solutions

By Imtiaz Parvez, Ali Rahmati, Ismail Güvenç, Arif I. Sarwat, Huaiyu Dai. IEEE Communications Surveys and Tutorials, 2017

796 citations recorded by the source corpus.

The fifth generation (5G) wireless network technology is to be standardized by 2020, where main goals are to improve capacity, reliability, and energy efficiency, while reducing latency and massively increasing connection density. An integral part of 5G is the capability to transmit touch perception type real-time communication empowered by applicable robotics and haptics equipment at the network edge. In this regard, we need drastic changes in network architecture including core and radio access network (RAN) for achieving end-to-end latency on the order of 1 ms. In this paper, we present a detailed survey on the emerging technologies to achieve low latency communications considering three different solution domains: 1) RAN; 2) core network; and 3) caching. We also present a general overview of major 5G cellular network elements such as software defined network, network function virtualization, caching, and mobile edge computing capable of meeting latency and other 5G requirements.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/902533c5b152e1de01d5566d28b64b994b23d091

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Citations in the corpus

A Survey of Multi-Access Edge Computing in 5G and Beyond: Fundamentals, Technology Integration, and State-of-the-Art (2019, neutral): “readers to read the surveys in [39], [40] for more detail.”
Age of Information: An Introduction and Survey (2020, background): “Machine-to-machine communication and the tactile internet, each requiring link delays of just a few milliseconds, were key drivers for the 5G cellular standard [1]–[3].”
Study and Investigation on 5G Technology: A Systematic Review (2021, background): “Low latency communications also clear up a different area where remote medical care, procedures, and operation are all achievable [31].”
A Tutorial on Ultrareliable and Low-Latency Communications in 6G: Integrating Domain Knowledge Into Deep Learning (2021, background): “Parvez et al. [75] presented a general view on how to meet latency and other 5G requirements with the software-deﬁned network (SDN), network function virtualization, caching, and mobile edge computing (MEC).”
Security and Privacy for 6G: A Survey on Prospective Technologies and Challenges (2021, background): “2) Enhancing 5G Technologies for 6G: SDN, Network Slicing, vRAN/Open RAN, Edge, and Their Successors: 6G continues to perfect many of the technologies and features of 5G security.”
Toward Edge Intelligence: Multiaccess Edge Computing for 5G and Internet of Things (2020, background): “…MEC-enabled 5G applications, and ﬁnally proposes several promising future directions of integrating MEC into 5G. 1) Role of MEC for 5G: The main goals of 5G are to improve reliability, energy efﬁciency, and capacity while dramatically increasing connection density and reducing latency [86].”
Ultra-Low Latency (ULL) Networks: The IEEE TSN and IETF DetNet Standards and Related 5G ULL Research (2018, background): “[34] focuses on waveform designs, wireless protocol optimizations, microwave backhaul architectures, SDN architectures for backhaul and core networks, and content caching mechanism for 5G.”