An Effective Wide-Bandwidth Channel Access in Next-Generation WLAN-Based V2X Communications

Hanseul Hong,Ronny Yongho Kim,Woojin Ahn,Young Yong Kim

doi:10.3390/app10010222

Abstract

As Intelligent Transport System (ITS) applications are diversified and amount of ITS data increases, high throughput and reliability are required in next-generation V2X communications. In order to meet such increased throughput and reliability requirements, IEEE 802.11bd, the next-generation V2X communication standard, has commenced standard development. One of the main features of IEEE 802.11bd is a 20-MHz bandwidth transmission. In this paper, a novel wide-bandwidth channel access scheme in next-generation Wireless Local Area Network (WLAN)-based vehicular communications is proposed. The proposed scheme is designed to provide fairness with other ITS devices and channel efficiency considering adjacent channel interference. By using the proposed scheme, through extensive simulations, it is verified that, while satisfying the fairness requirement with other ITS devices, the channel access delay of wide-bandwidth packet transmission can be optimized.

Highlights

IntroductionVehicle-to-Pedestrian (V2P) communication prevents traffic accidents by providing warning signals
Intelligent Transport Systems (ITSs) have been developed and widely deployed withVehicle-to-Everything (V2X) communication
In order to investigate the performance of the proposed channel-access schemes in terms of the fairness and efficiency of the 20-MHz frame defined in IEEE 802.11bd, rigorous simulations fairness and efficiency of the 20-MHz frame defined in IEEE 802.11bd, rigorous simulations are performed

Summary

Introduction

Vehicle-to-Pedestrian (V2P) communication prevents traffic accidents by providing warning signals. As various applications using V2X communication are developed, the required throughput and reliability are diversified. As more onboard sensors are equipped in each vehicle, the communication requirements of throughput and reliability have increased. Schemeaccess in 5.9schemes, GHz BandSection 3 describes the proposed channel access scheme and alternative channel access schemes for the wide bandwidth of 20-MHz transmission. V2X communication scheme is DSRC, which employs offairness. The most widely and delay performance the proposed scheme, Section. GHz BandGHz band) is called the Control Channel. As shown inV2X the figure, Channel Scheme 178 Thewhich most is widely deployed is DSRC,Channel which employs a set of WAVE. GHz band) is dedicated to safety messages between vehicles, and Channel

Results

Discussion

Conclusion