Research and Development of QoS methods Based on SDN in 5G/IMT-2020

Abstract

Quality of service (QoS) in networking is the process of managing network resources to reduce packet loss, as well as lower network jitter and latency. It has been widely used in traditional networks and can also be implemented in the 5G network based on software-defined networking (SDN). A traditional network carries several challenges such as vendor dependency, the complexity of managing a large network, dynamical changes in forwarding policies, and the like. SDN is a new networking strategy that is designed to address the challenges of a traditional internet protocol network, including high levels of complexity and the inability to timely adapt to new QoS requirements. The fundamental idea behind SDNs compared to the conventional networking paradigm is the creation of horizontally integrated systems through the separation of the control and the data plane while providing an increasingly sophisticated set of abstractions. Various SDN-enabled QoS frameworks have recently emerged offering many possibilities for network reconfiguration and high-level definition of policies. QoS requirements for fifth generation (5G) networks have been defined relying on three main categories of use cases, including Extreme Mobile Broadband, Massive Machine-type Communications IoT 1 /M2M devices, and highly reliable M2M-communication (Ultra- reliable Machine- Type Communications. The present study analyzes and surveys the QoS based on the protocol of the OpenFlow method and QoS relying on the open-source SDN controller method in the 5G network. In addition, it discusses various architectural issues related to the SDN network of open-source controllers and examines their impact on the QoS. The study further outlines the characteristics of QoS parameters (e.g., latency, availability, reliability, jitter, and bandwidth) in a 5G network, followed by discussing and comparing such parameters in 5G which are defined by the world's leaders in 5G technology.