Router design for DDS: Architecture and performance evaluation

The current Data Distribution Service for Real-Time Systems (DDS) is mainly designed for transmission in a single local network domain. However, when DDS applications communicate with other applications in different network domains over WAN, the DDS could face severe problems, because most ISPs in WAN do not allow multicast and UDP flows. In this paper, we propose a router design for DDS. While keeping the semantics of the DDS, the proposed DDS router provides an efficient data distribution over WAN using the local recovery and overlay multicast. Through the NS-3 simulations, we show that the system with the DDS routers outperforms the legacy unicast based communication method in terms of the scalability and robustness.