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Open AccessArticle

Learning-Based Task Offloading for Marine Fog-Cloud Computing Networks of USV Cluster

1
Navigation College, Dalian Maritime University, Dalian 116026, China
2
Information Science and Technology College, Dalian Maritime University, Dalian 116026, China
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(11), 1287; https://doi.org/10.3390/electronics8111287
Received: 30 September 2019 / Revised: 26 October 2019 / Accepted: 2 November 2019 / Published: 5 November 2019
(This article belongs to the Special Issue AI Enabled Communication on IoT Edge Computing)
In recent years, unmanned surface vehicles (USVs) have made important advances in civil, maritime, and military applications. With the continuous improvement of autonomy, the increasing complexity of tasks, and the emergence of various types of advanced sensors, higher requirements are imposed on the computing performance of USV clusters, especially for latency sensitive tasks. However, during the execution of marine operations, due to the relative movement of the USV cluster nodes and the network topology of the cluster, the wireless channel states are changing rapidly, and the computing resources of cluster nodes may be available or unavailable at any time. It is difficult to accurately predict in advance. Therefore, we propose an optimized offloading mechanism based on the classic multi-armed bandit (MAB) theory. This mechanism enables USV cluster nodes to dynamically make offloading decisions by learning the potential computing performance of their neighboring team nodes to minimize average computation task offloading delay. It is an optimized algorithm named Adaptive Upper Confidence Boundary (AUCB) algorithm, and corresponding simulations are designed to evaluate the performance. The algorithm enables the USV cluster to effectively adapt to the marine vehicular fog computing networks, balancing the trade-off between exploration and exploitation (EE). The simulation results show that the proposed algorithm can quickly converge to the optimal computation task offloading combination strategy under heavy and light input data loads. View Full-Text
Keywords: task offloading; marine fog-cloud computing networks; unmanned surface vehicles task offloading; marine fog-cloud computing networks; unmanned surface vehicles
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Cui, K.; Lin, B.; Sun, W.; Sun, W. Learning-Based Task Offloading for Marine Fog-Cloud Computing Networks of USV Cluster. Electronics 2019, 8, 1287.

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