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Software defined wireless networks: a survey of issues and solutions
Rangisetti A., Tamma B. Wireless Personal Communications: An International Journal97 (4):6019-6053,2017.Type:Article
Date Reviewed: Oct 14 2019

The communication network paradigm has undergone tremendous transformation, leading to changes in traffic patterns over the network. Traditional network architecture and protocols may not be suitable for present-day network and traffic patterns.

Software-defined networking (SDN) is an emerging technology that separates network control from the underlying packet forwarding hardware. SDN enables a global approach to specify complex networking tasks in one single control framework, which promises the significant simplification of network management, control, and monitoring. SDN is primarily used in wired networks for better network operation and efficiency. Researchers are studying the feasibility of incorporating SDN in mobile and wireless networks.

This paper presents a survey of SDN-based architectures available in literature for 4G and 5G networks. The authors have divided the SDN-based solutions for 4G networks into two types: those for long-term evolution (LTE)/evolved packet core (EPC), and those for a radio access network (RAN). They discuss the role of SDN, network function virtualization (NFV), and mobile edge computing in 5G networks.

The authors briefly explain some of the available SDN-based architectures/solutions for 4G and 5G networks, discuss their advantages, and list open issues and research challenges. They compare the architectures’ appropriateness and capabilities for 4G/5G installations. However, note that they do not actually install the architectures in the networks and their discussion is based on theoretical information available in the literature.

This paper is a good attempt at presenting upcoming SDN-based architectures for 4G/5G networks, including open issues and challenges surrounding these architectures. From the title, I had expected a paper on the role of SDN and the ongoing research on a wider range of wireless networks, including ad hoc, sensor, and vehicular networks. However, this paper only covers SDN for 4G/5G networks, without addressing other network scenarios. That being said, I did learn about some open issues and challenges, which could provide students and researchers in the field with possible research directions.

Reviewer:  Rinki Sharma Review #: CR146729 (1912-0438)
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