Robust priority aware multi-criterion offloading in digital twin UAVs networks

IF 7.6 3区 计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS
Muhammad Yahya , Muhammad Naeem , Zeeshan Kaleem , Waleed Ejaz
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引用次数: 0

Abstract

Unmanned Aerial Vehicles (UAVs) play a critical role in replenishing the energy of power-constrained Internet of Things (IoT) devices, particularly in public safety operations, thereby maintaining continuous system functionality. Integrating Mobile Edge Computing (MEC) into UAV platforms enables offloading computational tasks to aerial nodes, optimizing resource utilization. Efficient orchestration of communication, computation, caching, and energy resources is imperative to maximize the benefits of UAV-assisted MEC networks. Additionally, ensuring high situational awareness is essential for supporting priority-based latency-sensitive applications. Digital twin technology can be instrumental in minimizing latency by generating a real-time digital representation of the physical infrastructure, enabling enhanced system monitoring and optimization. Accordingly, we have formulated an optimization problem to maximize the number of IoT devices UAVs can support while adhering to predefined constraints. The formulated problem is a mixed integer non-linear programming model. Additionally, the dynamic management of tasks with varying priorities and computational demands introduces a significant resource allocation and scheduling challenge. Our proposed approach entails an efficient task offloading and priority-based scheduling strategy that prioritizes tasks, allocating computational resources to those with higher priority. The approach encompasses a multi-stage offloading strategy combining an interior-point method with a learning algorithm to address the inherent complexity and provide a viable solution. Simulation results validate the effectiveness of the proposed approach, outperforming conventional methods. Specifically, the Penalty Function Method Heuristic combined with the Interior Point Method achieves superior user connectivity compared to the Simple Relaxation Heuristic strategy.
数字双机网络中鲁棒优先级感知多准则卸载
无人机(uav)在补充功率受限的物联网(IoT)设备的能量方面发挥着至关重要的作用,特别是在公共安全行动中,从而保持系统的连续功能。将移动边缘计算(MEC)集成到无人机平台中,可以将计算任务卸载到空中节点,优化资源利用率。有效地协调通信、计算、缓存和能源资源是最大化无人机辅助MEC网络效益的必要条件。此外,确保高态势感知对于支持基于优先级的延迟敏感应用程序至关重要。数字孪生技术可以通过生成物理基础设施的实时数字表示来减少延迟,从而增强系统监控和优化。因此,我们制定了一个优化问题,以最大限度地提高无人机可以支持的物联网设备数量,同时坚持预定义的约束。该问题是一个混合整数非线性规划模型。此外,具有不同优先级和计算需求的任务的动态管理带来了重大的资源分配和调度挑战。我们提出的方法需要一种有效的任务卸载和基于优先级的调度策略,该策略将任务优先化,将计算资源分配给具有更高优先级的任务。该方法采用多阶段卸载策略,结合内点法和学习算法来解决固有的复杂性,并提供一个可行的解决方案。仿真结果验证了该方法的有效性,优于传统方法。具体来说,与简单松弛启发式策略相比,惩罚函数启发式与内点法相结合实现了更好的用户连通性。
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来源期刊
Internet of Things
Internet of Things Multiple-
CiteScore
3.60
自引率
5.10%
发文量
115
审稿时长
37 days
期刊介绍: Internet of Things; Engineering Cyber Physical Human Systems is a comprehensive journal encouraging cross collaboration between researchers, engineers and practitioners in the field of IoT & Cyber Physical Human Systems. The journal offers a unique platform to exchange scientific information on the entire breadth of technology, science, and societal applications of the IoT. The journal will place a high priority on timely publication, and provide a home for high quality. Furthermore, IOT is interested in publishing topical Special Issues on any aspect of IOT.
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