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GAS: A group acknowledgment strategy for popular content distribution in Internet of vehicle

机译:天然气:车辆互联网流行内容分发的集团致谢策略

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摘要

As an important part of the Internet of Thing (IoT), the Internet of Vehicle (IoV) has attracted tremendous attentions due to its diverse applications and significant potentials in the Intelligent Transportation System (ITS). The IoV is designed to guarantee road safety, improve traffic efficiency and provide entertainment services through V2X (Vehicles-to-Everything) communications. However, due to high mobility and intermittent connectivity in IoV, the vehicles may fail to download a large popular file directly from other moving vehicles within limited time in Vehicle-to-Vehicle (V2V) phase. To improve the transmission efficiency, a Group Acknowledgment Strategy (GAS) is proposed in this paper. At first, A group transmission mode is designed and the popular content is divided into many segments according to various life time among vehicles, which could significantly speed up the data transfer process. Meanwhile, a GACK (Group Acknowledgment) mechanism is envisioned to unitedly reply the provider once data segments have been transmitted in one round, which will further reduces the network overhead and save more time for popular content distribution. The numerical results show that our proposed GAS has significant advantages over the non-cooperative approach and Aggregate Local Mobility (ALM) scheme in terms of average network delays, data loss ratio, transmission cost, network throughput and delivery ratio. (c) 2019 Elsevier Inc. All rights reserved.
机译:作为事物互联网(物联网)的重要组成部分,车辆互联网(IOV)由于其不同的应用和智能运输系统(其)中的显着潜力而引起了巨大的关注。 IOV旨在保证道路安全,通过V2X(车辆 - 所有)通信提供交通效率,并提供娱乐服务。然而,由于IOV中的高移动性和间歇性连接,车辆可能无法直接从车辆到车辆(V2V)相位的有限时间内直接从其他移动车辆下载大型流行文件。为了提高传输效率,本文提出了组确认策略(气体)。首先,设计了组传输模式,并且根据车辆之间的各种寿命,流行内容被分成许多段,这可以显着加速数据传输过程。同时,想象一下GACK(组确认)机制,通过一旦数据段传输了数据段,这将进一步减少网络开销并节省更多的流行内容分发时间。数值结果表明,我们所提出的气体在非协作方法中具有显着的优势,并在平均网络延迟,数据丢失率,传输成本,网络吞吐量和传递比率方面聚合局部移动性(ALM)方案。 (c)2019 Elsevier Inc.保留所有权利。

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