Opportunistic multicast routing for cyber physical systems

Cyber Physical Systems (CPS) are systems that exhibit tight coordination of computational and physical elements. A CPS node which is a mobile node having sensors should cooperate with each other in order to monitor and control the physical world adaptively. In the CPS environment, Guaranteeing reliability, real-time service, and scalability are significant issues. To meet these requirements, Opportunistic Routing (OR) can be used effectively. The OR is a recent routing paradigm that achieves high throughput by taking full advantage of the broadcast nature of wireless channel. Moreover, multicast can also be available as means to manage coordination among CPS nodes. In this paper, we propose a reliable and scalable real-time multicast routing protocol based on the opportunistic routing and location information of nodes called Opportunistic Multicast Routing (OMR) for CPS. OMR satisfies the CPS requirements through hop-by-hop strategy rather than end-to-end strategy. The simulation results show that OMR achieves better multicast efficiency and reliability than the traditional multicast routing protocol.