Design and Development of a Framework for Reliable Data Dissemination in VANET Environment Using Software Defined Networking and Cloud by Jitendra Bhatia

Guided by: Dr. K Kotecha With Synopsis and CD 13EXTPHDE111

ABSTRACT:
Vehicular networks are one of the cornerstones of an Intelligent Transportation
System (ITS). With an increase in the number of vehicles on the road, demand for
Intelligent Transportation System is on the rise. The use of ITS is widely accepted and
used in many countries for not only traffic congestion and demand control, but also for
road safety and efficient infrastructure usage. A high annual rate of road accidents for
many years requires improved transportation systems to provide a high level of on-road
safety. The Global standing report on road safety, reflective information from a hundred
and eighty countries, indicates that worldwide the overall number of deaths by road
traffic has reached a quiescent stage with highest on-road traffic death rates. Effective
data dissemination is one of the solutions as it is a crucial component of safety as well as
infotainment services. In explicit, safety messages, such as, road accident warning, lane
change, traffic congestion warning, etc., are the most crucial message types that need to
be efficiently disseminated with the minimal delay and high reliability.
It is essential in vehicular networks to aid routing and cooperative driving
applications etc., apart from road-safety message dissemination through periodic
beaconing. Vehicular Ad Hoc Network has high mobility and recurring disconnections
due to which reliable and efficient vehicular communications is a difficult task.
Traditional information dissemination protocols usually depends upon extra
communication to collect information regarding the neighboring regions and fix the
dissemination criteria consequently. This strategy incurs significant overhead problems
due to which the scalability of data dissemination, a crucial criterion under high-density
regions, is affected. Many existing models under I2V environment following static
broadcast timer mechanism are not suitable to VANETs. Also, for security and reliable
data delivery under V2V communication environment, general forwarding schemes
designed for general purpose MANETs cannot be directly applied to VANETs. Also,
most of the existing solution for data dissemination in VANETs are unable to provide
flexibility and adaptability due to their rigid architecture. These drawbacks introduce
an obstacle to meet the Quality of Service (QoS) parameters. Moreover, the existing
schemes are unable to provide sustainable communication. Hence, there is a need for a
new solution which exhibits flexibility, adaptability to meet the desired QoS parameters and ensures reliable communication.
Apart from the data dissemination, data collection from a wide variety of sources that
can be processed and organized into many forms for multiple stakeholders, has brought
significant change in ITS recently. An existing centralized information processing system
in VANETs lacks flexibility, adaptability and also involves a significant initial investment
and high operating costs. Moreover, they are affected by problems like the necessity
to transmit large amounts of data, the requirement of a more extended period for road
network coverage, unsteady transmission, and the demand for an automatic generation
and update strategy for the road network information in a large-scale road network.
Moreover, cloud-based vehicular network architecture incurs delay due to network
delay (Al-Badarneh et al.). This problem motivates us to design a framework for reliable
data dissemination among multiple vehicles from RSU under V2X(i.e., V2V or I2V)
environment by using Software Defined Networking (SDN) and Cloud. Processing of
vehicular network data with cloud and SDN increases accuracy,or coverage of the traffic
information, reduction in delay due to preprocessing at smart RSUs, i.e., fog paradigm
which is, not attempted full edge, to the best of our knowledge.
This thesis work firstly advocates for the generic design of an architecture which
exercises the software-defined network concept and cloud computing to support various
ITS services. Secondly, we focus on design a new solution for calculating an adaptive
broadcast time interval at RSU under I2V (Infrastructure-to-vehicle) environment for
disseminating safety alert and infotainment messages among moving vehicles. Thirdly,
we propose a network coding based reliable protocol, which uses SDN controller aiming at
increasing the success delivery ratio under the V2X environment. At last, to assist a wide
variety of VANET services using cloud resources, we develop an SDN based load balancer
for the effective utilization of cloud resources and thus, this research work contributes
towards an overall performance and QoS enhancement for data dissemination in VANET
environment.