期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2013
卷号：2013
DOI：10.1155/2013/101878
出版社：Hindawi Publishing Corporation
摘要：Vehicular sensor network (VSN) is a promising
technology which could be widely applied to monitor the physical
world in urban areas. In such a scenario, the efficient data delivery
plays a central role. Existing schemes, however, cannot choose
an optimal route, since they either ignore the impact of vehicular
distribution on connectivity, or make some unreasonable
assumptions on vehicular distribution. In this paper, we propose
a traffic-aware data delivery scheme (TADS). The basic idea of
TADS is to choose intersections to forward packets dynamically
as the route from a source to destination based on link quality and
remaining Euclidean distance to destination. Specifically, we first
present an optimal utility function as the criteria of intersection
selection. Besides the packet forwarding through intersections,
we also propose an improved geographically greedy routing
algorithm for packet forwarding in straightway mode. Moreover,
in order to decrease the routing overhead brought by the traffic
information gathering, we build a traffic condition prediction
model to estimate the link quality. The simulation results show
that our TADS outperforms existing works on packet delivery
ratio, end-to-end delay, and routing overhead.
