HoPP: Robust and Resilient Publish-Subscribe for an Information-Centric Internet of Things

TL;DR

HoPP introduces a robust publish-subscribe protocol tailored for IoT networks, emphasizing request-response patterns to enhance responsiveness, resilience, and support for mobility and partitioning in resource-constrained environments.

Contribution

The paper presents HoPP, a novel request-response based publish-subscribe scheme optimized for IoT, minimizing control state and supporting mobility and network partitioning.

Findings

Successfully deployed in real-world IoT-Lab testbed

Supports multi-hop wireless scenarios with constrained devices

Enhances responsiveness and resilience in IoT networks

Abstract

This paper revisits NDN deployment in the IoT with a special focus on the interaction of sensors and actuators. Such scenarios require high responsiveness and limited control state at the constrained nodes. We argue that the NDN request-response pattern which prevents data push is vital for IoT networks. We contribute HoP-and-Pull (HoPP), a robust publish-subscribe scheme for typical IoT scenarios that targets IoT networks consisting of hundreds of resource constrained devices at intermittent connectivity. Our approach limits the FIB tables to a minimum and naturally supports mobility, temporary network partitioning, data aggregation and near real-time reactivity. We experimentally evaluate the protocol in a real-world deployment using the IoT-Lab testbed with varying numbers of constrained devices, each wirelessly interconnected via IEEE 802.15.4 LowPANs. Implementations are built on CCN-lite with RIOT and support experiments using various single- and multi-hop scenarios.