Blockchain-Based Reputation Management for Task Offloading in Micro-Level Vehicular Fog Network

Abstract

With the widespread adoption of the internet of things (IoT) technologies towards building a smart city, connected devices often offload computation tasks to nearby edge locations (base stations) to reduce overall computation and network delay. However, serving an ever-increasing number of end devices at these traditional edge locations is becoming impossible, subsequently making them fail to deliver the agreed quality of service to all requesting devices. However, the backend cloud data center is available to serve these requests but incurred additional communication delay, thus, unsuitable for delay-sensitive applications. Furthermore, the fact that the underlying network is inherently ad hoc which makes it prone to malicious nodes affecting its overall performance. In this work, we propose a secure fog computing paradigm where roadside units (RSUs) are used to offload tasks to nearby fog vehicles based on repute scores maintained at a distributed blockchain ledger. The experimental results demonstrate a significant performance gain in terms of queuing time, end-to-end delay, and task completion rate when compared to the baseline queuing-based task offloading scheme.

A novel IoT-based health and tactical analysis model with fog computing

“…It was emphasized that complexity is difficult to calculate in heuristic approaches, so these approaches should be developed. In Iqbal et al (2020), a task offloading algorithm was proposed. It was explained that the proposed framework can be improved by adding verification mechanisms with blockchain structures.…”

Fog computing security and privacy for the Internet of Thing applications: State‐of‐the‐art

“…Authors have provided some recommendations that can help in addressing, at least partially, the issue of trust in the Fog environment such as using blockchain technology to maintain the log files, which has the records of events and messages exchanging in Fog nodes in a distributed way. 84,[106][107][108][109][110][111] So, if a Fog node misbehaves, other trusted nodes can discover that. In other words, using Blockchain can enable a trustworthy IoT-Fog-Cloud architecture.…”

Blockchain for Vehicular Internet of Things: Recent Advances and Open Issues

“…Iqbal et al [ 89 ] proposed a blockchain-based decentralized trust management scheme in VANETs for the purpose of evaluating whether a fog vehicle is suitable for offloading tasks or not. They discussed a scenario where RSUs offload some tasks to fog vehicles in the vicinity and discussed a fog vehicle selection algorithm that takes into account the workload and reputation of vehicles.…”