Bus-VANET
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Transcript of Bus-VANET
BUS-VANET: A BUS VEHICULAR NETWORK INTEGRATED WITH TRAFFIC
INFRASTRUCTURE
Abstract
With the development of wireless communications, Vehicular Ad Hoc Network (VANET) has
received considerable attention on information sharing and data delivery services. In order to
collect and control traffic conditions, Intelligent Transportations Systems (ITS) has deployed a
number of Road Side Units (RSUs) along the roads to collect and deliver traffic information to
the Traffic Control Center (TCC) for analyzing traffic data. Although some VANET
architectures have been proposed based on the predictable routes and schedules of buses, none of
them considered taking advantage of such traffic infrastructures which already been supplied by
ITS and combine them with scheduled buses. In this project, we propose a two-tier BUSVANET
that is fully integrated with RSUs and TCC as traffic infrastructures. In this new architecture, the
communications of vehicles, not only benefit from the existence of buses, but also consider the
effects of using RSUs and TCC. RSUs are used to ensure service coverage while TCC is helpful
for locating the destination vehicle quickly. We also investigate how much benefits can be
obtained by taking advantage of this type of traffic infrastructure.
Existing System
In existing, they have proposed the trajectory based statistical forwarding (TBD) for finding the
vehicle as the next hop to minimize the delivery delay from a vehicle to a RSU. Vehicles have to
share their trajectory with others for the encounter time prediction. In this way, vehicles can
select the next hop based on the estimated encounter point with less latency. However, these
trajectory based routing algorithms are hard to be realized in the real-world since people may not
want to share their own trajectories considering the privacy issue. In mobile infrastructure based
MANET, introduced architecture of a two-tier VANET, in which buses constitute the backbone
for data delivery. One tier is the vehicles while another composed of the buses. However, their
way of computing the connection time constrains that vehicles cannot change their speeds and
directions. They also did not consider taking advantage of traffic infrastructures to improve the
VANET performance.
Disadvantages
Did not take the advantage of traffic infrastructure
Vehicles cannot change their speed and direction
Existing routing protocols are hard to be realized in real world
Architecture
Proposed System
We propose a new BUS-VANET architecture which fully integrates traffic infrastructures with
buses and vehicles. We consider how to take advantages of RSUs and TCC that already been
provided by ITS to improve the VANET performance. Based on the proposed BUS-VANET, we
use the registration technology to improve the transmission performance and provide a new
method of selecting registration node to reduce the number of switches from common vehicles to
high-tier nodes. We also proposed a new scheme for identifying the destination location more
efficiently.
Advantages
Improves the traffic performance
Identify the destination location more efficiently
Higher delivery rate and shorter delivery delay
Conclusion
In this project, we propose a new two-tier BUS-VANET that fully integrated with traffic
infrastructures for improving the performance of VANET. We take advantage of RSUs and TCC
that already required and constructed by ITS and investigate how much benefits we can obtain
from this realistic environment. By integrating RSUs and TCC with buses, the coverage of the
high-tier nodes can be ensured and the possibility of packets carrying is reduced. TCC helps us
quickly identify the location of the destination vehicle. Comparing to traditional VANET, better
performance of our BUS-VANET can be achieved with less delivery delay and higher delivery
rate.
References
[1]. K.-J. Wong, B. S. Lee, B. C. Seet, G. Liu, and L. Zhu, “BUSNet: Model and usage of
regular traffic patterns in mobile ad hoc networks for inter-vehicular communications,” in
Proc. Patterns Mobile Ad Hoc Networks Inter Vehicular Communications, 2003.
[2]. J. Luo, X. Gu, T. Zhao, and W. Yan, “MI-VANET: A new mobile infrastructure based
VANET architecture for urban environment,” in Proc. IEEE Vehicular Technology Conf.
Fall, Sept. 2010, pp. 1–5.
[3]. C.-R. Dow, P. Hsuan, Y.-H. Lee, Y.-T. Lee, and C.-Y. Huang, “An efficient data
circulation and discovery scheme in VANETs using public transportation systems,” in
Proc. Int. Conf. Network Service Management, Oct. 2010, pp. 286–289.
[4]. F. Xu, S. Guo, J. Jeong, Y. Gu, Q. Cao, M. Liu, and T. He, “Utilizing shared vehicle
trajectories for data forwarding in vehicular networks,” in Proc. IEEE INFOCOM, Apr.
2011, pp. 441–445.
[5]. G. G. Md, N. Ali, E. Chan, and W. Li, “Supporting realtime multiple data items query in
multi-RSU vehicular ad hoc networks (VANETs),” J. Syst. Softw., vol. 86, pp. 2127–
2142, Aug. 2013.