Performance Evaluation of Traffic Steering Methods for QoS Improvement in Case of Network Failures in Beyond 5G Networks

Mobile communication networks are expanding. However, when natural disasters happen and communication equipment is damaged, service disruptions can occur and many people cannot use the network. When such disasters happen, it is possible to use long-distance wireless networks such as Low Power Wide Area (LPWA) networks or satellite communication networks as alternative routes. This study focuses on the network between the Beyond 5G core network and the remote host and proposes a resilient network that uses the open RAN (O-RAN) architecture to utilize available communication networks during failures. Additionally, we propose a traffic steering method based on the types of user devices to effectively use available alternative routes and alleviate QoS degradation for users. This paper evaluates the effectiveness of the proposed system through simulations. The simulation results showed that the proposed methods increase the satisfaction rate of flows’ requirements.