ASAP: IEEE 802.11ax-based seamless access point handover for moving vehicles

IF 5.8 2区 计算机科学 Q1 TELECOMMUNICATIONS Vehicular Communications Pub Date : 2024-07-18 DOI:10.1016/j.vehcom.2024.100828
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Abstract

The increasing number of connected and automated vehicles has led to a sharp increase in the demand for network access of moving vehicles. Although 5G networks support terminals with high mobility, the traffic load is too heavy to bear if all the vehicles have a large amount of data for transmission. Therefore, IEEE 802.11-based wireless network is a complementary offload solution to provide high-speed network access for vehicles with low cost, easy deployment and high scalability. However, frequent network handover of moving vehicles between multiple roadside access points (APs) results in network performance degradation, which is one of the challenges in vehicular communications. In this paper, we propose a framework (referred to as ASAP) based on the up-to-date IEEE 802.11ax standard to provide moving vehicles with seamless handover between multiple APs. By leveraging the high efficiency (HE) sounding protocol of IEEE 802.11ax, each AP is capable to monitor the current location of moving vehicles in real time. In addition, a mechanism is also proposed for AP uplink/downlink transmissions through collaboration between the APs and the backbone network to achieve seamless handover for moving vehicles. Since ASAP is based on IEEE 802.11ax, the compatible security scheme such as IEEE 802.11i can be applied to ASAP for security enhancement. The proposed solution does not require any modification on the user terminals, making it possible to be implemented in practice. Extensive simulations show that ASAP significantly reduces the network handover delay to microsecond level, and improves network throughput up to 59% compared with the state-of-the-art methods.

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ASAP:基于 IEEE 802.11ax 的移动车辆无缝接入点切换
联网车辆和自动驾驶车辆的数量不断增加,导致移动车辆的网络接入需求急剧增加。虽然 5G 网络支持具有高移动性的终端,但如果所有车辆都有大量数据需要传输,其流量负载将不堪重负。因此,基于 IEEE 802.11 的无线网络是一种互补的卸载解决方案,能以低成本、易部署和高扩展性为车辆提供高速网络接入。然而,移动车辆在多个路边接入点(AP)之间频繁的网络切换会导致网络性能下降,这是车载通信面临的挑战之一。在本文中,我们基于最新的 IEEE 802.11ax 标准提出了一个框架(简称 ASAP),为行驶中的车辆提供多个接入点之间的无缝切换。通过利用 IEEE 802.11ax 的高效(HE)探测协议,每个接入点都能实时监控移动车辆的当前位置。此外,还提出了一种通过接入点与骨干网络协作进行接入点上行/下行链路传输的机制,以实现移动车辆的无缝切换。由于 ASAP 基于 IEEE 802.11ax,因此可将兼容的安全方案(如 IEEE 802.11i)应用于 ASAP,以增强安全性。提出的解决方案不需要对用户终端进行任何修改,因此可以在实践中实施。大量仿真表明,与最先进的方法相比,ASAP 能将网络切换延迟显著降低到微秒级,并将网络吞吐量提高达 59%。
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来源期刊
Vehicular Communications
Vehicular Communications Engineering-Electrical and Electronic Engineering
CiteScore
12.70
自引率
10.40%
发文量
88
审稿时长
62 days
期刊介绍: Vehicular communications is a growing area of communications between vehicles and including roadside communication infrastructure. Advances in wireless communications are making possible sharing of information through real time communications between vehicles and infrastructure. This has led to applications to increase safety of vehicles and communication between passengers and the Internet. Standardization efforts on vehicular communication are also underway to make vehicular transportation safer, greener and easier. The aim of the journal is to publish high quality peer–reviewed papers in the area of vehicular communications. The scope encompasses all types of communications involving vehicles, including vehicle–to–vehicle and vehicle–to–infrastructure. The scope includes (but not limited to) the following topics related to vehicular communications: Vehicle to vehicle and vehicle to infrastructure communications Channel modelling, modulating and coding Congestion Control and scalability issues Protocol design, testing and verification Routing in vehicular networks Security issues and countermeasures Deployment and field testing Reducing energy consumption and enhancing safety of vehicles Wireless in–car networks Data collection and dissemination methods Mobility and handover issues Safety and driver assistance applications UAV Underwater communications Autonomous cooperative driving Social networks Internet of vehicles Standardization of protocols.
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