IEEE 802.11bd & 5G NR V2X: Evolution of Radio Access Technologies for V2X Communications
IEEE 802.11bd & 5G NR V2X: Evolution of Radio Access Technologies for V2X Communications
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DOI：
10.1109/access.2019.2919489
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发表时间：
2019-01-01
期刊：
影响因子：
3.9
通讯作者：
Park, Jung-Min
中科院分区：
文献类型：
--
作者：
Naik, Gaurang;Choudhury, Biplav;Park, Jung-Min
随着人们对自动驾驶汽车的兴趣日益浓厚，开发能够实现可靠和低延迟车辆通信的无线电接入技术（RAT）变得至关重要。专用短程通信（DSRC）和蜂窝V2X（C-V2X）是能够支持第一天车辆应用的两种当今技术。然而，这些RAT无法支持许多先进车辆应用的通信要求，这些应用被认为是实现完全自主车辆的关键。DSRC和C-V2X都在进行广泛的增强，以支持具有高可靠性、低延迟和高吞吐量要求的先进车辆应用。这些RAT演进-用于DSRC的IEEE 802.11bd和用于C-V2X的NR V2X-可以补充当今的车辆传感器，实现自动驾驶。本文综述了802.11bd和NR V2X标准化的最新进展。我们开始简要描述两个当今的车辆RAT。在此过程中，我们强调他们无法保证许多先进车辆应用的服务质量要求。然后，我们看看两个RAT的演变，即，IEEE 802.11bd和NR V2X概述了它们目标，描述了它们的显著特性，并深入描述了实现这些特性的关键机制。虽然IEEE 802.11bd和NR V2X都处于开发的初始阶段，但我们揭示了它们的初步性能预测，并将这两种演进的RAT与它们各自的前辈进行了比较和对比。
With the rising interest in autonomous vehicles, developing radio access technologies (RATs) that enable reliable and low-latency vehicular communications has become of paramount importance. Dedicated short-range communications (DSRCs) and cellular V2X (C-V2X) are two present-day technologies that are capable of supporting day-1 vehicular applications. However, these RATs fall short of supporting communication requirements of many advanced vehicular applications, which are believed to be critical in enabling fully autonomous vehicles. Both the DSRC and C-V2X are undergoing extensive enhancements in order to support advanced vehicular applications that are characterized by high reliability, low latency, and high throughput requirements. These RAT evolutions-the IEEE 802.11bd for the DSRC and NR V2X for C-V2X-can supplement today's vehicular sensors in enabling autonomous driving. In this paper, we survey the latest developments in the standardization of 802.11bd and NR V2X. We begin with a brief description of the two present-day vehicular RATs. In doing so, we highlight their inability to guarantee the quality of service requirements of many advanced vehicular applications. We then look at the two RAT evolutions, i.e., the IEEE 802.11bd and NR V2X, outline their objectives, describe their salient features, and provide an in-depth description of key mechanisms that enable these features. While both, the IEEE 802.11bd and NR V2X, are in their initial stages of development, we shed light on their preliminary performance projections and compare and contrast the two evolutionary RATs with their respective predecessors.