Traffic-aware QoS Guaranteed SDN/NFV-5G Network with Multi-Layer Network Slicing and Resource Allocation

Abstract

Introducing Currently, there is a remarkably higher and more complex request for Quality of Service (QoS) that the current technologies cannot meet. The present study works towards increasing the QoS within fair Service Level Agreement (SLA) constraints, due to the difficulty in achieving QoS within SDN/NFV enabled 5G networks. Using Network Slicing (NS) technology and the Dijkstra algorithm were adopted to optimize the uses of network resource allocating and the QoS values. The network has been tested before and after running the Dijkstra algorithm and network slicing, with the main focus on QoS parameters like bandwidth, delay, jitter, latency, and packet loss among nodes within the network. For the test bed, the Mininet simulation platform is used in addition to the custom network topology, nodes, and other details whose management is controlled by the RYU controller during the SDN experiment. Finally, iPerf is used to evaluate the network performance.The resulting data indicates that a significant increase has been observed in regards to the network performance after the algorithm and network slicing were run., the network bandwidth was increased from 743.83(Kbits/sec) to 1.34(Mbit/sec) after running the algorithm. The Jitter has decreased from 41.61 to 0.1 (ms). Also, the Packet Loss and latency have decreased and reduced delay from 47.77 (ms) to 0.05 (ms). The network utilization has been improved and the traffic is controlled and managed using Network Slicing because each slice has its own set of requirements to meet the demands of various use cases. The technology efficiently allocates network resources for maximum cost-efficiency.