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01-Applied Mathematics & Information Sciences
An International Journal


Volumes > Volume 9 > No. 2L


Router Design for DDS: Architecture and Performance Evaluation

PP: 513-521
Kyu-haeng Lee, Tae Wan Noh, Kyeong Tae Kim, Won-tae Kim, Chong-kwon Kim,
The Data Distribution Service (DDS) for real-time systems is a middleware standard for Publish/Subscribe (Pub/Sub) which is an abstraction for one-to-many communication. While DDS is known for supporting many real-time applications successfully, when applications communicate with others in different network domains over a Wide Area Network (WAN), DDS could face severe performance degradation, due to the fact that most ISPs do not allow IP-multicast and UDP flows in WAN. In this paper, we propose a router design for DDS. Keeping DDS semantics, the proposed DDS router provides efficient data distribution over WAN based on two schemes: overlay multicast and local recovery. Through NS-3 simulations, we show that the proposed scheme improves system performance significantly in terms of latency and RTT, compared to the current DDS mechanism.

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