STMAC: Spatio-Temporal Coordination-Based MAC Protocol for Driving Safety in Urban Vehicular Networks

In this paper, we propose a spatio-temporal coordination-based media access control (STMAC) protocol for efficiently sharing driving safety information in urban vehicular networks. STMAC exploits a unique spatio-temporal feature characterized from a geometric relation among vehicles to form a line-o...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on intelligent transportation systems 2018-05, Vol.19 (5), p.1520-1536
Main Authors: Jeong, Jaehoon, Shen, Yiwen, Jeong, Sangsoo, Lee, Sejun, Jeong, Hwanseok, Oh, Tae, Park, Taejoon, Ilyas, Muhammad Usman, Sno, Sang Hyuk, Du, David H. C.
Format: Article
Language:English
Subjects:
coordination
Delays
Directional antennas
MAC protocol
Media Access Protocol
Quality of service
Roads
Safety
spatio-temporal
Vehicular networks
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we propose a spatio-temporal coordination-based media access control (STMAC) protocol for efficiently sharing driving safety information in urban vehicular networks. STMAC exploits a unique spatio-temporal feature characterized from a geometric relation among vehicles to form a line-of-collision graph, which shows the relationship among vehicles that may collide with each other. Based on this graph, we propose a contention-free channel access scheme to exchange safety messages simultaneously by employing directional antenna and transmission power control. Based on an urban road layout, we propose an optimized contention period schedule by considering the arrival rate of vehicles at an intersection in the communication range of a road-side unit to reduce vehicle registration time. Using theoretical analysis and extensive simulations, it is shown that STMAC outperforms legacy MAC protocols especially in a traffic congestion scenario. In the congestion case, STMAC can reduce the average superframe duration by 66.7%, packet end-to-end delay by 68.3%, and packet loss ratio by 88% in comparison with the existing MAC protocol for vehicle-to-infrastructure communication, based on the IEEE 802.11p.
ISSN:1524-9050
1558-0016
DOI:10.1109/TITS.2017.2723946