Coral: Reliable and low-latency P2P convergecast for critical sensor data collection

Abstract

Data collection is a key ingredient for a plethora of distributed systems. Strict responsiveness, i.e., the reliable and timely data delivery is a mandatory requirement for critical applications. For a widened application focus towards large scale critical applications in heterogeneous operational environments, data dissemination infrastructures are inevitably required to provide robustness against frequent perturbations. In this work, we present Coral, a highly reliable and low latency data collection peer-to-peer protocol. Its fully decentralized design allows operation under unfavorable conditions and immediate adaptation towards such effects. Coral provides for a latency optimized and path redundant data collection along with in-network aggregation, i.e., convergecast, for applications with ultra low latency requirements that span across large geographic extents.