ES-5G: A Novel Edge-based SDN-enabled 5G Architecture for Lower Latency
Wei‐Kuo Chiang, Y. Shang · 2023
With the fast development of the Internet and the increasing data traffic forwarded in the wireless network, the mobile network raises the requirement of bandwidth and latency. To meet this trend and provide better user Quality of Service (QoS), we deploy a popular paradigm called Software Defined Networking (SDN) with the existing 5G network and combine it with the concept of edge computing to achieve the purpose of higher data rate and lower latency. First, we replace the data plane in the 5G network with the SDN network and deploy the SDN network in the edge network close to the user. This new architecture is called the Edge-based SDN-enabled 5G network (ES-5G). It can shorten the data forwarding path, reduce the data process time, and reduce the burden on the backhaul network that forwards the data to the core network. After that, we modify the existing basic procedures to satisfy our design. We propose a new mechanism to pre-establish the forwarding path and design the new handover procedure. This mechanism is less processed when the user moves to other gNodeB (gNB) service domains. Then, we calculate the end-to-end latency from forwarding the packets and the message exchanges in the handover procedures to compare with the original 5G network. Finally, we verify that our performance analysis is correct via OMNeT++.