@inproceedings{9c3ba1e1f55a48688c0fedce1930f112,
title = "TA-MAC: A Traffic-Aware TDMA MAC Protocol for Safety Message Dissemination in MEC-assisted VANETs",
abstract = "Vehicular ad hoc networks (VANETs) have been widely recognized as a promising solution to improve traffic safety and efficiency for the ability to provide situation awareness even though the potential dangers and traffic anomalies are out of the visual range. In VANETs, time-division multiple access (TDMA) based overlay protocols can prevent transmission collisions, and play an important role in providing an efficient communication channel. However, due to high vehicle mobility and time-varying traffic flow, the existing TDMA-based slot allocation approaches cannot fully utilize the channel resources, which may result in high transmission delay and packet collision. To overcome these shortcomings, we propose a traffic-aware TDMA-based MAC (TA-MAC) protocol which utilizes the capability of mobile edge computing (MEC) in this paper. Specifically, based on MEC and vehicle-to-road-side-units (V2R) communications, a traffic-aware mechanism is first proposed to estimate the traffic condition on the road segment. Then, we propose a new slot assignment method that aims at guaranteeing the high channel utilization and low delay of safety message under dynamic traffic conditions. Finally, we conduct extensive experiments to demonstrate the effectiveness of the proposed protocol.",
keywords = "MEC, TDMA, V2R communication, VANETs, occupancy set, traffic-aware",
author = "Dongxiao Deng and Wenbi Rao and Bingyi Liu and Dongyao Jia and Yang Sheng and Jianping Wang and Shengwu Xiong",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 29th International Conference on Computer Communications and Networks, ICCCN 2020 ; Conference date: 03-08-2020 Through 06-08-2020",
year = "2020",
month = aug,
doi = "10.1109/ICCCN49398.2020.9209706",
language = "English",
series = "Proceedings - International Conference on Computer Communications and Networks, ICCCN",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "ICCCN 2020 - 29th International Conference on Computer Communications and Networks",
}