Full Duplex-Based Scheduling Protocol for Latency Enhancement in 5G eV2X VANETs

Junwei Zang*, Mohammed Shikh-Bahaei

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

3 Citations (Scopus)

Abstract

In this paper, we propose a novel scheduling protocol, named full duplex semi-persistent scheduling (FD-SPS) protocol, to support the communications between autonomous vehicles (AVs) in future 5G enhanced vehicle-to-everything (eV2X) ad hoc networks (VANETs). Different from other works, AVs are considered to operate at different autonomous levels. Besides, full duplex (FD) technology is incorporated to provide simultaneous sensing and broadcasting capability, so that AVs can detect signal collisions whilst broadcasting. Furthermore, compared to the standardised cellular V2X (C-V2X) Mode 4 technology, the sensing-based semi-persistent scheduling (SB-SPS) protocol, collision resolution capability is realised. Thus, collided messages can be re-broadcast. A corresponding prioritised re-broadcast mechanism is also proposed. We focus on the latency performance, because the delivery of a message with short delay is of paramount significance in safety-related communications. We evaluate the FD-SPS protocol through both analysis and simulations, and compare it with the benchmark SB-SPS protocol. It is shown that our proposed protocol has enhanced the latency performance, and can be considered to be deployed in future 5G eV2X VANETs. This paper also shows that latency can be enhanced by taken autonomous levels into consideration in future MAC design.

Original languageEnglish
Title of host publication2021 IEEE Wireless Communications and Networking Conference, WCNC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728195056
DOIs
Publication statusPublished - 5 May 2021

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2021-March
ISSN (Print)1525-3511

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