Data Dissemination in Software Defined Vehicular Ad hoc Network: A Review

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 282
Data Dissemination in Software Defined Vehicular Ad hoc
Network: A Review
Sushama P. Warghane1, Prof. S. M. Choudhary2
1 Department of Electronics and Telecommunication Engineering, GHRCE, Nagpur (M.S.), India,
Sushwarghane5@gmail.com
2 Departments of Electronics and Telecommunication Engineering, GHRCE, Nagpur (M.S.), India,
Swatna2k11@gmail.com
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Abstract - To integrate new technologies into the vehicles
many automotivemanufacturersaretakinginterestinVANET,
which is a form of MANET, in order to provide safety
applications, traffic monitoring and entertainment
applications. But due to inflexibility in the deployment of
protocol the real world application of vehicular
communications are obstructed. To overcome the limitations
in vehicular networks, Software Defined Networking (SDN) is
giving assurance to bridge the cleft throughprogrammability.
It mainly concentrates on the centralized control of vehicle to
vehicle communication. The foundationforbuildingSDNis the
Open-Flow protocol. In this paper, we have described SDN
architecture and have given flow management in case of
vehicular communication network. As the applications uses
variety of data received from server, road side units and other
vehicles, the latency problem arises. Data must betransmitted
with minimum delay for efficient vehicular network
communication. We survey on data dissemination techniques
and scheduling concept which will help to improve thesystem.
Key Words: VANET, SDN, V2V, Data Dissemination, Open-
Flow.
1. INTRODUCTION
In the recent years VANET have achieved a lot of
interest in vehicle communication. It offers communication
between vehicle to vehicle (V2V) and vehicle to
infrastructure (I2V). VANET with the decentralizednetwork
is providing variety of services like accidental prevention
and entertainment services for the drivers and passengers.
U.S.DepartmentofTransportation(DOT)elaborated
with eight large automotive manufacturers listed as
TOYOTO,Mercedes-Benz,Ford,Hyundai-Kia motors,General
motors, Honda, Volkswagen-Audi, Nissan. Wirelessprotocol
like Wi-Fi called Dedicated Short Range Communication
(DSRC) enables V2V communication work. When DSRC is
attached with GPS technology, the result is low cost V2V
communication system. Common messages that are
transmitted to all vehicles contain each vehicle’s existing
position, speed, acceleration, Heading. Along with this
vehicle control information like transmission state, brake
status, angle of steering wheel, alsovehiclespathhistoryand
path prediction is added.
In general there are 3types of applicationsprovided
by VANET include safety, traffic management and
infotainment. Some important safety applications are listed
here.
Emergency Electronic Brake Lights (EEBL) will
notify a driver that hard brakingvehicleisontheroadahead.
Blind Spot Warning Safety (BSW) application provides
warning of vehicles at blind position of driver. Lane Change
Warning (LCW) is one of the important application thathelp
driver with the intention to changelane will getwarningthat
lane change should not be attempted if there is a faster
moving vehicle coming on the same lane. Forward Collision
Warning (FCW) application provide warning of standing or
slow speed vehicle ahead if you are coming quickly on the
way. Similarly Do Not Pass Warning (DNPW), Intersection
Movement Assist and Turn Assist Applications are helpful.
Infotainmentapplicationpresent entertainmentand
useful data indicating closest shops, mall, fuel station,
theaters with best prize in that area and available parking
slots. Moving ahead with this progress there are many
challenges in VANET like frequent link disconnections,
heterogeneity of applications, data dissemination, mobility
etc.
Challenges in the installation ofVANETapplications
like flow traffic in multi-path topology and feeble use of
network. To meet these challenges, Software Defined
Networking (SDN) is the option.
SDN is the ability to program network performance
in open way using languages, systems, computers that are
ordinary. Networking is being change into software
discipline. Even in the major implication networking is
becoming the part of computing. SDN is being circulated to
different networking system. To enhance the performance
and for better traffic management SDN can be appliedonthe
fog devices. SDN is the rising prototype that makes
deportment of vehicular switches programmable and
allowed to be controlled by central element known as
controller. Resulting in advance customizability of network

control and forwarding manners. This concept is similar to
mobile phone operating systems, such as Apple’s i OS and
Google’s android in which ‘apps’ can be installed to the
system.
2. SDN ARCHITECTURE
SDN is the leading technology to manage the vast
networks. The basic idea behind SDN is the separation of the
network control plane from the data plane. The standard
used for the implementation of SDN is the Open-flow (Open
Networking Foundation).
There are three layers in the architecture namely Data
plane, Control plane and application layer. In data plane RSU
and vehicles are considered as vehicular switches. In control
plane there is a controller which is nothing but server
connectingswitchesandnetworkapplications.Controllercan
control the packet forwarding manner of switches by
inserting and deleting flow entries. Vehicular switches
ceaselessly update state (location and velocity) to the
controller thus it is said that controller has a global view of
whole network.
Fig -1: SDN architecture
Flow tables are located in every Open-flow enabled
switch, which contain list of flow entries related to
instruction, match field, count and related actions.
When packets arrive at the switch, it will look into
the flow table entries. If there is no rule entered in table, the
path request will be sent to the controller. In the
acknowledgment
There will be installation of rule into the switchand
accordingly packets will be forwarded to the destination. If
flow entry match then packets will be forwarded according
to action associated.
Fig-2: Flow management
Integrating SDN with VANET gives programmable
and flexible network architectureand network management
is simplified.
3. DATA DESSIMINATION
Characteristics ofVANETsuchasveryhighmobility,
infinite extension, intermittent connectivity through the
sparse infrastructure challenges the information exchange
and data scheduling. Routing is the keystone of any data
dissemination scheme in vehicular network. Effective data
dissemination process is used to solve many problems.
Parameters to be considered during data dissemination are
size of network, intermittent connectivity, speed of vehicle.
Another problem which can affect the entire the process is
latency requirement. So, the content information must be
discovered immediately and share between nodes.
For data dissemination, data broadcast is an
attractive solution. Two majordata broadcasttendencies are
push based and pull based.
In push based broadcasting to retrievedata itemsof
interest without sending any request, all vehicles listen
inactively to the broadcastchannel.Pushcommunicationhas
objective of information exchange which may include data
like speed, position and direction of vehicles to accesstraffic
conditions. Pull based broadcast is called as on-demand
broadcast. As a reply RSU disseminate data items to express
clearly the requests submittedbyvehicles.Itismorescalable
as compared to push based.
Methods for data dissemination are as follow.
3.1 Opportunistic Data Dissemination
Opportunistic communication is proposed to
overcome the limitation inflicted by lack of connectivity.

When target vehicle come in contact with other vehicles or
RSU, information is pulled or retrieved from them.
3.2 Vehicle Assisted Data Dissemination
Vehicles carry informationanddelivers eithertothe
RSU or to other vehicles when it comes acrossthem.Inorder
to spread data, this process involves mobility in
supplementary to wireless transmission.
3.3 Cooperative Data Dissemination
Some part of data can be downloaded by the
vehicles and subsequently shared to obtain whole data.This
method is relevant for content dissemination.
As vehicles moves at high speed they resides in the
region of RSU only for a while. Therefore scheduling of data
is essential to service as much request as possible and to
reduce downloading delay. Usingsome performancemetrics
like gain of scalability, service ratio, service delay, success
transfer rate etc. any scheduling algorithm can be verified.
Some scheduling algorithms noticed are Most Requested
First (MRF), First Come First Serve (FCFS),CooperativeData
Dissemination (CDD), Earliest Deadline First (EDF), Multi-
item Motion PredictionScheduling(MMPS),etc.InMRFmost
pending request data items are scheduled first. FCFS avoids
data popularity and CDD marks the popularity of data item
even though it is ranked behind.
4. RELATED WORK
Author in[1] have presented data dissemination
system via hybrid I2V and V2Vcommunicationandanonline
scheduling algorithm Cooperative Data Dissemination is
proposed. In heavy traffic scenario CDD outperforms as it
uses benefit of V2V communication. Simulation resultshows
that more requests are served by CDD than MRF and FCFS
algorithm in every scenario.
Rakesh and Mayank [9] give descriptive study of
various challenges, characteristics and applications of
VANET. Comparison of different protocols based on many
parameters has been given in the paper which helps in
research.
Kai Liu and Victor C.S. Lee [13] concluded that Data
Dissemination must be adaptable to the changing traffic
pattern. To catch the dynamic traffic characteristics it
examines vehicle dwell time and data access pattern as two
representative factors. It showed that push based and on-
demand services gives better performance for longer dwell
time (vehicle time spend in coverage area).
Yiqing Gui [11] proposed Multi-item Motion
Prediction Scheduling scheme (MMPS). This isa cooperative
scheduling scheme which transfers the requests to the
nearby RSU using prediction of vehicle motion.Performance
metrics like service ratio and success transfer rate are used
to compare the results of MMPS with classical algorithms
like MRF and EDF which outperforms in a varioussituations.
Author in [4] proposed a token based admission
control policy to reserve a lane.Itfocusedonidentificationof
most rewarding requests and granting most suitable tokens
to them.
5. CONCLUSION
This paper presents survey on VANET, software
defined networking and data scheduling. We have put SDN
architecture along with flow management in case of
vehicular network. In addition data dissemination
techniques and scheduling concept is sorted. Section IV
describes related work by several researchers and
academicians. We conclude that though there are many
works there are still thought provoking issues. This review
will contribute to the further work.
REFERENCES
[1] Kai LIU, Joseph K. Y. Ng, Victor C. S. Lee, “
Cooperative Data Scheduling in Hybrid Vehicular Ad Hoc
Networks: VANET as a Software Defined Network,”
IEEE/ACM Transactions On Networking, VOL. 24, NO.3,
June 2016
[2] I. Ku, Y. Lu, E. Cerqueira, R. Gomes, M. Gerla,
“Towards Software-Defined VANET: Architectures and
Services”,MediterraneanAd HocNetworking Workshop,
2014
[3] Nguyen B.Truong Dasan ,Gyu Myoung Lee, Yacine
Ghamri-Doudane,”Software Defined networking-based
Vehicular Ad hoc Network with Fog Computing”,IEEE,
June,2015
[4] Kai Liu, Sang H. Son “A Token-based Admission
Control and Request Scheduling in Lane Reservation
Systems”, 2011 14th International IEEE Conference on
Intelligent Transportation Systems Washington, DC,
USA. October 5-7, 2011
[5] M.A. Sulahuddin, A. Al-Fuqaha, M. Guizani, “Software
Defined Networking for RSU Clouds in support of The
Internet of Vehicle”, IEEE Internet of Things journal,
Nov., 2014.
[6] Zongjian He, Jiannong Cao, Xuefeng Liu, “SDVN:
Enabling Rapid Network Innovation for Heterogeneous
Vehicular Communication”, IEEE Network, May/June
2016.

[7] Vishal Kumar, Narottam Chand, “Data Scheduling in
VANETs: A Review”, International Journal of Computer
Science & Communication Vol. 1, No. 2, July-December
2010.
[8] Wolfgang Brau, Michael Menth, “Software-Defined
Networkin Using OpenFlow: Protocols,Applicationsand
Architectural Design Choices”, Future Internet 2014.
[9] Rakesh Kumar and Mayank Dave, “A Review of
Various VANET Data Dissemination Protocols”,
International Journal of u- and e- Service, Science and
Technology Vol. 5, No. 3, September, 2012.
[10] Samiksha and Anit Kaur, “Data Transmission in
VANETS: A Review, Applications, Routing Protocols”,
International Journal of Computer Applications (0975 –
8887) Volume 141 – No.7, May 2016.
[11] Yiqing Gui and Edward Chan, “Data Scheduling for
Multi-item Requests in Vehicle-Roadside Data Access
with Motion PredictionBasedWorkloadTransfer”,2012
26th International ConferenceonAdvancedInformation
Networking and Applications Workshops.
[12] Xia Shen, Xiang Cheng, Liuqing Yang, Rongqing
Zhang and Bingli Jiao, “Data DisseminationinVANETs:A
Scheduling Approach”, IEEE TRANSACTIONS ON
INTELLIGENT TRANSPORTATION SYSTEMS, VOL. 15,
NO. 5, OCTOBER 2014 .
[13] Kai Liu Victor C.S. Lee, “RSU-based Real-time Data
Access in Dynamic Vehicular Networks”, 2010 13th
International IEEE.

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