Using DDS middleware in distributed partitioned systems

Abstract

Communication middleware technologies are slowly being integrated also into critical domains that are also progresively transitioning to partitioned systems. Especially, avionics systems have transitioned from federated architectures to IMA (Integrated Modular Avionics) standard that targets partitioned systems to comply with the requirements of cost, safety, and weight. In the future developments, it is fully considered the integration of middleware to support data communication and application interoperability. As specified in FACE (Future Airborne Capability Environment), middleware will be integrated into mixed criticality systems to ease the development of portable components that can interoperate effectively. Still nowadays, in realtime environments, communication middleware is perceived as a source of unpredictability; and still there are very few contributions that present real applications of the integration of communication middleware into partitioned systems to support distribution. This paper describes the usage of a publish-subscribe middleware (precisely, DDS -Data Distribution Service for real-time systems-) into a fully distributed partitioned system. We explain the design of a reliable communication setting enabled by the middleware, and we exemplify it using a distributed monitoring application for an emulated partitioned system with the goal of obtaining the middleware communication overhead. Implementation results show stable communication times that can be integrated in the resource assignment to partitions.

NEP+: A Human-Centered Framework for Inclusive Human-Machine Interaction Development

“…On the one hand, MQTT is defined in [47] as a publish/subscribe protocol for constrained devices requiring low-bandwidth and high-latency features under unreliable networks. On the other hand, DDS is an Object Management Group (OMG) standard, and middleware protocol designed to be used in critical domains requiring real-time and fine-tuned communication through quality of service (QoS) policies [48]. Results of [46] indicate that ZeroMQ has lower latency than DDS and MQTT for small (64B) and medium (2KB) messages.…”

Integration of Data Distribution Service and distributed partitioned systems

“…This paper is an extended version of a previous contribution [8] that introduced the design of the fully partitioned deployment that made use of DDS middleware. The system was fully distributed across different physical machines that would perform data sampling and transmission that was later received, processed and displayed at a remote node.…”

Virtualization technology for distributed time sensitive domains

“…In [38] an eHealth application was developed supporting reconfiguration triggered by sensors; this work has been recently enhanced with a component model [34] for the Integrated Clinical Environment. The temporal cost of the communication of sensors and embedded computers such as Rasperry Pi has been analyzed in [39] and the influence of the middleware design in the communication costs has been analyzed in [40,41] A bridge for adapting middleware to different communication paradigms is presented in [26]. And lastly, augmented interconnection between iLand and the distributed annex Ada (Ada DSA) is presented in [27].…”