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A Street-Centric Opportunistic Routing Protocol Based on Link Correlation for Urban VANETs

Published on Jul 1, 2016in IEEE Transactions on Mobile Computing4.474
· DOI :10.1109/TMC.2015.2478452
Xinming Zhang18
Estimated H-index: 18
(USTC: University of Science and Technology of China),
Xulei Cao1
Estimated H-index: 1
(USTC: University of Science and Technology of China)
+ 1 AuthorsDan Keun Sung34
Estimated H-index: 34
(KAIST)
Sources
Abstract
In urban vehicular ad hoc networks (VANETs), due to the high mobility and uneven distribution of vehicles, how to select an optimal relaying node in an intra-street and how to determine a street selection at the intersection are two challenging issues in designing an efficient routing protocol in complex urban environments. In this paper, we build a link model with a Wiener process to predict the probability of link availability, which considers the stable and unstable vehicle states according to the behavior of vehicles. We introduce a novel concept called the link correlation which represents the influence of different link combinations in network topology to transmit a packet with less network resource consumption and higher goodput. Based on this concept, we design an opportunistic routing metric called the expected transmission cost over a multi-hop path (ETCoP) implemented with our link model as the selection guidance of a relaying node in intra-streets. This metric can also provide assistance for the next street selection at an intersection. Finally, we propose a street-centric opportunistic routing protocol based on ETCoP for VANETs (SRPE). Simulation results show that our proposed SRPE outperforms the conventional protocols in terms of packet delivery ratio, average end-to-end delay, and network yield.
  • References (36)
  • Citations (47)
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References36
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Robust and efficient data delivery in vehicular ad hoc networks (VANETs) with high mobility is a challenging issue due to dynamic topology changes and unstable wireless links. The opportunistic routing protocols can improve the reliability of routing by making full use of the broadcast characteristics and assist in data transmission through additional backup links. In this paper, we propose a Link State aware Geographic Opportunistic routing protocol (LSGO) which exploits a combination of geogra...
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