Real-Time Simulator Exploiting Micro-Service Architecture for Mission-Critical Service with Multiple Mobile Networks

Mission-critical services such as remote vehicle control necessitate real-time interactions between vehicles and cloud services that can be realized using next-generation mobile networks. A previous study proposed a Real-Time Simulator (RTS) coordinated by using three simulators for mission-critical service: CARLA, OMNeT++, and SUMO, and evaluated the mission-critical services within a single mobile network. Carrier-bonding communication uses multiple mobile networks to achieve highly reliable communication. Thus, it is a promising candidate for enhancing service reliability and should be evaluated using such a RTS. However, the deployment of multiple mobile networks in an OMNeT++ instance is difficult owing to the significant increase in the computational burden of processing large amounts of communication traffic. Thus, this study propose an advanced RTS architecture for the evaluation of highly reliable communication. In the RTS architecture, multiple OMNeT++ instances are employed to evaluate the carrier-bonding communication. Referring to the micro-service architecture, the proposed RTS employs Message Queueing Telemetry Transport to share vehicle position information asynchronously among all simulators. Further, LXD container virtualization is used to ensure the availability of the processing resources for each OMNeT++. The proposed RTS ensures scalability while maintaining the throughput performance for each OMNeT++ instance. Furthermore, the RTS is capable of evaluating mission-critical services through carrier-bonding communication.