A Lightweight Implementation of Data Distribution Service (DDS) Incorporating Time Sensitive Networking (TSN) on the AUTOSAR Classic Platform

With the development of intelligent connected vehicles and Ethernet-based In-Vehicle Network (IVN), the data-oriented data distribution service (DDS) has gradually been entering the vision of in-vehicle network researchers. Thanks to the perfect dynamic discovery mechanism of DDS, applications just need to know the topic of interest to complete the connection with publishing and subscribing nodes, which eliminates cumbersome configurations. However, the current implementations of DDS consume a relatively large quantity of resources, which makes it difficult to be deployed on resource-constrained embedded microcontroller unit (MCU). Considering the advantages of Time Sensitive Networking (TSN) in improving the reliability and latency of network transmission, this paper analyzes and carries out a lightweight design of DDS stack from the perspective of convergence of TSN and DDS, and deploys this LightWeight (LW) DDS on the AUTOSAR Classic Platform. Experiments show that the LW DDS has less resource consumption reduced by 75% and lower end-to-end latency reduced by up to 18% compared to standard implementation.