A Routing Protocol based on Improved Ad-hoc on
Demand Multi-path Distance Vector in Multi-Radio
network
Minghui Liwang, Lianfen Huang, Yuliang Tang*,Tianli Hu
Department of Communication Engineering
Xiamen University
Xiamen, Fujian, China
E-mail: minghuilw@stu.xmu.edu.cn, lfhuang@xmu.edu.cn, tyl@xmu.edu.cn, 78270205@qq.com
Abstract—Vehicular Ad Hoc Network(VANET) plays an
important and indispensable part in the Intelligent Transport
System(ITS). The QoS required by data transmission becomes
higher due to the moving characteristic of nodes and the
increasing of business types in VANET. Hence, the technology of
Multi-Radio Multi-Channel has been a pplied in VANET in order
to provide a more efficient network performance. On account of
the difference between link channel qualities in the same route, a
routing protocol based on IAOMDV(Improved Ad-hoc on
Demand Multipath Distance Vector Routing) is proposed in this
paper to make the routing mechanism in M ulti-Radio network
fairer and more reasonable. The simulation platform of Network
performance is set based on the Manhattan Grid Model thus to
build a real simulation scenario. The indicators like time delay,
packet loss rate, network throughput and routing overhead of the
proposed method are compared with other frequently-used
routing protocols. As a result, the improved routing protocol
is obviously better suited for the Multi-Radio VANET and can
provide better performance for data transmission.
Index Terms—Intelligent Transport System,Vehicular Ad Hoc
Network, M ulti-Radio Multi- Channel, routing protocol
The vehicle system plays an increasingly important role
with the development of ITS intelligent transportation system
and wireless communication technology, becomes the co re in
Safety Notice , Intelligent payment, and In-car entertainment
systems.The cost percentage of vehicle system in the
expense cost reaches 45% and even higher in high-ranking
vehicles[1]. Due to the portability of the vehicle, the frequently
changing of network topology , and the lack of good solutions
for the problem of hidden terminal and exposed terminal in
multi-hop environment in vehicle network , wireless channel
competitions between nodes will lead to the large increase in
competition time delay in high-node-density environment
which then make the network performance can not meet the
QoS requirements of the network[2].
Thus for the traditional VANET network, the mobility
characteristic of the node can result in frequently changing
topology and weak communication link,moreover there is no
guarantee for the transmission performance of nodes due to the
aforementioned network environment .For these reasons and
more,the concept of Multi-channel has been put forward in
which nodes switching and data transmitting in multiple
channels so that to increase the channel capacity as well as
network performance of VANET network.
The price of the radio frequency interface increasingly
falling due to the progress and popularization of
wireless communication .Data can be transmitted and received
concurrently by installing multiple radio frequency interface in
vehicle and assigning them non-interfering orthogonal
channels,accordingly reducing the conflicts by competition for
channel resource of nodes .In Multi-Radio VANET network,as
long as netwo rk topology remains stable and each interface can
remain working for a long time in a particular channel without
switching frequently ,the overhead caused by channel
synchronization will decrease[3].
The basic framework of Multi-Radio Multi-Channel
Vehicular Ad Hoc Network(VANET) is shown in Fig.1[4]
Multi-Radio VANET network is composed of the Road Side
Unit(RSU), On-board Unit(OBU) and core network . Vehicles
can communicate w ith vehicles(V2V) and also with road side
infrastructures (V2I).A mobile network can be set up
automatically by vehicles in the scope of communication .In
Multi-Radio VANET network , data can be transmitted and
received concurrently by vehicles ,interfaces and channels for
transmission can be appointed by transport protocols between
nodes and RSUs. Consequently vehicles’own information
(speed, direction, location) can be transmitted to other vehicles
around by broadcasting, abundant service(on-board
entertainment, security information, video, etc.)can be provided
for vehicle nodes by RSU.
II. STATE OF THE ART AND RELATED WORKS
In Multi-Radio VANET network, the allocation mechanism
of interface and channel need to be improved on MAC layer on
account of Multiple radio frequency interface of nodes and
concurrently transmitting and receiving data. [5] came up with
a CSQCA( channel switching queue-based channel allocation,
CSQCA) method based on 802.11p protocol : a dynamic
channel allocation algorithm which takes channel switching
queues of both sides in communication by aiming at when the
978-1-5090-2218-2/16/$31.00 ©2016 IEEE
The 11th International Conference on
Computer Science & Education (ICCSE 2016)
August 23-25, 2016. Nagoya University, Japan
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