SDN-based L4S Congestion Control in Beyond 5G

This paper describes the SDN-based L4S solution, a congestion control algorithm designed to improve QoS in 5G and Beyond networks. Inspired by the IETF specifications, our framework tackles challenges prevalent in immersive applications like video streaming and cloud gaming, such as ultra-low latency and packet loss. The proposed solution seamlessly integrates L4S techniques into SDN, thereby optimizing queue management within the transport network. Additionally, it employs Explicit Congestion Notification (ECN) to mark packets during congestion scenarios. This synergistic approach facilitates dynamic adjustments in transmission rates, enhancing the overall efficiency of the transport network, particularly in accommodating various classes of traffic. Evaluation results demonstrate that our solution outperforms the benchmarks by a substantial margin in terms of End-to-End latency, and packet loss.