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Vertical Handover Decision for Mobile IoT Edge Gateway Using Multi-Criteria and Fuzzy Logic Techniques

机译：使用多标准和模糊逻辑技术的移动物联网边缘网关的垂直切换决策

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摘要

Internet of Things (IoT) is ubiquitous, including objects or devices communicating through heterogenous wireless networks. One of the major challenges in mobile IoT is an efficient vertical handover decision (VHD) technique between heterogenous networks for seamless connectivity with constrained resources. The conventional VHD approach is mainly based on received signal strength (RSS). The approach is inefficient for vertical handover, since it always selects the target network with the strongest signal without taking into consideration of factors such as quality of service (QoS), cost, delay, etc. In this paper, we present a hybrid approach by integrating the multi-criteria based VHD (MCVHD) technique and an algorithm based on fuzzy logic for efficient VHD among Wi-Fi, Radio and Satellite networks. The MCVHD provides a lightweight solution that aims to achieving seamless connectivity for mobile IoT Edge Gateway over a set of heterogeneous networks. The proposed solution is evaluated in real time using a testbed containing real IoT devices. Further, the testbed is integrated with lightweight and efficient software techniques, e.g., microservices, containers, broker, and Edge/Cloud techniques. The experimental results show that the proposed approach is suitable for an IoT environment and it outperforms the conventional RSS Quality based VHD by minimizing handover failures, unnecessary handovers, handover time and cost of service.
机译：事物互联网（物联网）是无处不在的，包括通过异源无线网络通信的对象或设备。移动物联网中的主要挑战之一是与受约束资源的无缝连接之间的高效垂直移交决策（VHD）技术。传统的VHD方法主要基于接收的信号强度（RSS）。该方法对垂直切换效率低，因为它总是用最强的信号选择目标网络，而无需考虑到诸如服务质量（QoS），成本，延迟等的因素中，我们介绍了一种混合方法基于模糊逻辑的基于多标准的VHD（MCVHD）技术和算法，实现Wi-Fi，无线电和卫星网络中的高效VHD。 MCVHD提供了一种轻量级解决方案，旨在实现一组异构网络的移动物联网边缘网关的无缝连接。使用包含真实物联网设备的测试平台实时评估所提出的解决方案。此外，测试平台与轻质和有效的软件技术集成，例如，微服务，容器，经纪人和边缘/云技术。实验结果表明，该方法适用于物联网环境，通过最小化切换故障，不必要的切换，切换时间和服务成本，优于基于传统的RSS质量的VHD。

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