DocumentCode :
1689574
Title :
On Cooperative and Opportunistic Channel Access for Vehicle to Roadside (V2R) Communications
Author :
Jhang, Ming-Fong ; Liao, Wanjiun
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei
fYear :
2008
Firstpage :
1
Lastpage :
5
Abstract :
This paper focuses on vehicle to roadside unit (V2R) communications in vehicle networks based on IEEE 802.11 DCF MAC protocol. The main challenge is due to the short residence time of the moving vehicle within the coverage of each stationary RSU. As a result, the contentions among vehicles during this short period of time dramatically degrade the system performance. In this paper, we propose a new mechanism called Proxy-based Vehicles to RSU access (PVR) for V2R communications. This protocol is designed to exploit collaborative and opportunistic forwarding between any two spaced apart RSUs and to emulate back-to-back transmissions within the coverage of RSU. We then conduct ns-2 simulations to evaluate the performance of PVR. The results show that it achieves excellent performance and outperforms all existing solutions for V2R communications.
Keywords :
access protocols; cooperative systems; mobile communication; wireless LAN; wireless channels; DCF MAC protocol; IEEE 802.11; collaborative forwarding; cooperative channel access; opportunistic channel access; opportunistic forwarding; proxy-based vehicles; vehicle networks; vehicle to roadside communications; Automotive engineering; Degradation; Fading; Global Positioning System; Media Access Protocol; Road vehicles; Signal to noise ratio; System performance; Telecommunication traffic; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
ISSN :
1930-529X
Print_ISBN :
978-1-4244-2324-8
Type :
conf
DOI :
10.1109/GLOCOM.2008.ECP.966
Filename :
4698741
Link To Document :
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