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Delay-Optimal Task Offloading for UAV-Enabled Edge-Cloud Computing Systems
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DOI：10.1109/ACCESS.2022.3174127.png)
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摘要
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The emergence of delay-sensitive and computationally-intensive mobile applications and services pose a significant challenge for Unmanned Aerial Vehicles (UAVs) devices due to the scarcity in their resources such as computational power and battery lifetime. Mobile cloud computing has been introduced as a promising solution to overcome these limitations through task offloading. However, high-latency and security issues are considered the main challenges of this paradigm. Subsequently, the edge-cloud computing paradigm has been introduced and widely used to help to mitigate these issues. Nevertheless, the current task offloading models permit UAVs to execute their intensive tasks at the connected edge server, which leads to excessive loads due to the large number of UAVs and thereby increases the delay. Therefore, in this paper, we propose a delay-optimal task offloading approach for multi-tier edge-cloud computing in a multi-user environment. The problem is formulated as an optimization model using Integer Linear Programming (ILP) techniques to minimize the total service time of UAVs. Simulation results demonstrate that the proposed approach not only saves the service time by 33.5% and 55% for edge and cloud execution policies respectively, but also scales well for a large number of UAVs.
Keyword:
Task analysis
Servers
Computational modeling
Delays
Cloud computing
Simulation
Optimization
Computation offloading
edge-cloud computing
mobile edge computing
optimization
Internet of Things
unmanned aerial vehicles
linear programming
期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
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PROCEEDINGS OF THE IEEE
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PROCEEDINGS OF THE IEEEIF25.9
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