ACK-CAST: ACK-Based Broadcast Protocol for Vehicular Ad Hoc Networks

Ajmal KHAN  Jae-Choong NAM  You-Ze CHO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E97-B   No.5   pp.960-966
Publication Date: 2014/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E97.B.960
Type of Manuscript: PAPER
Category: Network
Keyword: 
ACK based broadcast protocol,  store-carry-forward,  vehicular ad hoc networks,  

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Summary: 
In vehicular ad hoc networks, the efficient and reliable dissemination of emergency messages in a highly mobile environment under dense or sparse network is a significant challenge. This paper proposes a new vehicular broadcast protocol, called ACK-CAST, that can operate effectively in both dense and sparse network scenarios. ACK-CAST relies on acknowledgment messages from one-hop neighbors to select the next rebroadcasting vehicle. Simulation results show that ACK-CAST outperforms the SERVUS protocol in terms of the end-to-end delay, message delivery ratio and network overhead.