Traffic Density-Based Broadcast Scheme for Vehicular Ad Hoc Networks

Dong-Won KUM
Ajmal KHAN
You-Ze CHO

IEICE TRANSACTIONS on Communications   Vol.E95-B    No.12    pp.3875-3878
Publication Date: 2012/12/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3875
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
broadcast scheme,  broadcast storm,  slotted p-persistence,  traffic density,  vehicular ad hoc networks,  

Full Text: PDF>>
Buy this Article

This paper proposes an efficient broadcast scheme based on traffic density measurement to mitigate broadcast storms in Vehicular Ad Hoc Networks (VANETs). In a VANET, the number of vehicles that rebroadcasts a message is closely related with the collision ratio of the message, so a well-designed broadcast scheme should consider traffic density when rebroadcasting a message. The proposed scheme introduces a traffic density measurement scheme and broadcast scheme for VANET. It is based on the slotted p-persistence scheme, but the rebroadcast procedure is enhanced and the rebroadcast probability p is controlled dynamically according to the estimated traffic density. Simulation results demonstrate that the proposed scheme outperforms existing schemes in terms of the end-to-end delay and collision ratio.