A Demand-Adaptive MAC Protocol without Information Packet Collision for VANET Safety Services

DOI

10.2991/icsnce-16.2016.44How to use a DOI?

Keywords

VANET; Safety Services; MAC Protocol; Demand-Adaptive

Abstract

VANETs, as a particular form of MANETs in which trajectory is restricted by the road and the capacity is not considered, will play the extremely vital role in next generation ITS architecture. Among various services provided by VANET, it's a milestone to reach the guaranteed delivery of urgent safety messages. This paper presents a Demand-Adaptive MAC (DAM) protocol without information packet collision, tailored to security services in vehicular networks and based on CSMA/CA and dynamic TDMA mechanism. In our protocol, Road Side Units (RSUs), the masters in the network, are exploited to response to the application, schedule time slot assignment and broadcast control packets, while vehicles which are the slaves perform under the control. By shrinking or expanding the slots assignment in application and information periods, DAM protocol can realize the self-adaptive demand. By utilizing the principal-subordinate model and a series of architectural mechanisms, the protocol can avoid collision of packets containing the safety information. We simulate the protocol on OPNET platform for a reasonable evaluation and compare it with the modified IEEE 802.11p standard and the ACFM protocol under various traffic scenarios. The simulation results indicate that the DAM protocol outperforms other protocols mentioned above in terms of average end-to-end delay and packet loss rate.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qiubo Huang
AU  - Zhixiang Zhang
PY  - 2016/07
DA  - 2016/07
TI  - A Demand-Adaptive MAC Protocol without Information Packet Collision for VANET Safety Services
BT  - Proceedings of the 2016 International Conference on Sensor Network and Computer Engineering
PB  - Atlantis Press
SP  - 220
EP  - 231
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsnce-16.2016.44
DO  - 10.2991/icsnce-16.2016.44
ID  - Huang2016/07
ER  -