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International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1358
Abstract— This paper presents the performances of
different ad hoc routing protocols within different network
areas. Mobile ad hoc networks are multi hop wireless networks
in which mobile nodes can move freely and can communicate
with each other without any centralized control or base station.
Any mobile device which is within MANETs can act not only as
a source and a sink but also as a router for data transmission.
Routing is one of the vital functions of network performance.
And then the ability of data transmission also depends on
routing between the mobile devices throughout the network.
Therefore, the performances of routing protocols in mobile ad
hoc networks (MANETs) have been proposed to test with
different network areas such as 800 square meter and 500
square meter. They are simulated with three performance
metrics such as packet delivery fraction, average end-to-end
delay and throughput. In mobile ad hoc networks, the topology
is frequently changes due to the movement of mobile nodes.
Therefore, the selection of mobility model testing the
performance of routing protocols is very important. Random
Waypoint Mobility Model (RWMM) which is the most
commonly used mobility model in ad hoc network is utilized in
this observation. This study is simulated on the network
simulator (NS2) and the comparisons of the performances of
routing protocols are illustrated at different movement speeds.
A realistic mobility model has also been innovated in this
observation. Using the realistic mobility model, the
performances of the proposed routing protocols have also been
investigated within the network area of 800m × 800m at the
different mobility speeds.
Index Terms—Mobile Ad Hoc Networks (MANETs),
Routing Protocols, AODV, DSR, Performance Metrics,
Realistic Mobility Model
I. INTRODUCTION
Mobile Ad hoc Networks (MANETs) are multi hop
wireless networks in which mobile nodes can move freely
and can communicate with each other without any
centralized control or base stations [3]. Each node in
MANETs acts as a source transmitting the data packets, as a
destination receiving the packets transmitted by other source
and also plays an additional role as a router, in routing the
data packets which are destined to some other node. The
applications of these networks are in battle field, disaster
recovery and emergency rescue operations [4].
There are two variations of wireless mobile communications.
Manuscript April, 2014.
San San Naing, Department of Electronic and Communication,
Mandalay Technologicaal University Mandalay, Myanmar,
+959400413115,
Zaw Min Naing, Technological University (Maubin), Maubin, Myanmar,
+9598585184
Hla Myo Tun, Department of Electronic and Communication, Mandalay
Technologicaal University, Mandalay, Myanmar, +9595416337.
The first one is known as infrastructure wireless networks,
where the mobile node communicates with a base station that
is located within its transmission range (one hop away from
the base station). The second one is infrastructure less
wireless network which is known as Mobile Ad hoc
Networks (MANETs). The sample diagram of infrastructure
wireless networks can be seen in fig. 1.
Fig. 1 Infrastructure vs Ad Hoc Network
MANETs consist of fixed or mobile nodes which are
associated without the help of fixed infrastructure or central
administration. These nodes are self-arranged and can be
organized “on the fly” anyplace, any time to support a
particular reason or situation. Two nodes know how to
communicate if they are within the reach of other’s
transmission range; if not intermediate nodes serve as routers
[2]. Mobile Ad-Hoc networks or MANET networks [1] are
mobile wireless networks, capable of autonomous operation.
Such networks operate without a base station infrastructure.
The nodes cooperate to provide connectivity. Also, a
MANET operates without centralized administration and the
nodes cooperate to provide services [3]. The diagram of
Mobile Ad hoc Network or infrastructure less network is
illustrated in fig. 2.
Fig. 2 Infrastructure less (Ad Hoc) Network
This investigation is mainly focused on the performance of
ad hoc routing protocols within the different coverage areas.
This is also observed at the various mobility speed because
mobile nodes which are in the ad hoc wireless network move
generously. Moreover, network density is also changed at all
mobility speed. This is explored with the network simulator
Performances of Ad Hoc Routing Protocols
San San Naing, Zaw Min Naing, Hla Myo Tun
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1359
(NS2) which is a commonly used simulator for mobile ad hoc
networks.
The rest of the paper are: section 2 describes some
characteristics and applications of MANETs and
classification of ad hoc routing protocols. Simulation
environments and parameters are depicted in section 3. The
results of this observation is presented in section 4 and then
the overall performance of this study is concluded in section
5.
II. MANETS AND AD HOC ROUTING PROTOCOLS
Mobile ad-hoc networks (MANETs) are self-configuring
networks of nodes connected via wireless without any form of
centralized administration. This kind of networks is
currently one of the most important research subjects, due to
the huge variety of applications (emergency, military, etc...)
[4]. In MANETs, each node acts both as a host and as a
router, thus, it must be capable of forwarding packets to other
nodes. Topologies of these networks change frequently. To
solve this problem, special routing protocols for MANETs
are needed because traditional routing protocols for wired
networks cannot work efficiently in MANETs.
A. MANETs
Mobile ad hoc networks (MANETs) are autonomous
systems of mobile hosts connected by wireless links. In
MANETs, each node acts both as host and as router, thus, it
must be capable of forwarding packets to other nodes.
Topologies of these networks change frequently. To solve
this problem, special routing protocols for MANETs are
needed because traditional routing protocols for wired
networks cannot work efficiently in MANETs. Hence, a
specific dynamic routing protocol for MANETs which
discovers and maintains the routes, and deletes the obsolete
routes continuously is necessary.
This kind of networks is becoming more and more
important because of the large number of applications, such
as [4]:
• Personal networks: Laptops, PDA’s (Personal Digital
Assistants), communication equipments, etc.
• Military applications: tanks, planes, soldiers, etc.
• Civil applications: Transport service networks, sport
arenas, boats, meeting centers, etc.
• Emergency operations: searching and rescue equipment,
police and firemen, etc.
B. Routing in MANETS
In MANETs, each node acts both as host and as router,
thus, it must be capable of forwarding packets to other nodes.
Topologies of these networks change frequently. To work out
this problem, special routing protocols for MANETs are
needed because traditional routing protocols for wired
networks cannot work efficiently in MANETs [6]. Hence, a
specific dynamic routing protocol for MANETs which
discovers and maintains the routes, and deletes the
superseded routes continuously is necessary.
MANETs are necessary to have different routing protocols
from the wired networks because traditional routing protocol
for wired network cannot work efficiently in MANET. Three
types of routing protocols are commonly used in MANETs.
They are Table-driven (Proactive), Demand-driven
(Reactive) and Hybrids [5].
i. AODV Routing Protocol
Ad hoc On-Demand Distance Vector (AODV) routing is
an on-demand and distance-vector routing protocol. AODV
routing protocol is capable of both unicast and multicast
routing. It keeps the routes in the routing table as long as they
are needed by the source nodes [8]. To find a path to the
destination, the source broadcasts a route request (RREQ)
packet. The neighbours in turn broadcast the packet to their
neighbours till it reaches an intermediate node that has
recent route information about the destination or till it
reaches the destination. The route request packet (RREQ)
uses sequence numbers to ensure that the routes are loop free
and to make sure that if the intermediate nodes reply to route
requests, they reply with the latest information only. When a
node forwards a route request packet to its neighbours, it also
records in its tables the node from which the first copy of the
request came. This information is used to construct the
reverse path for the route reply (RREP) packet. If the source
moves then it can reinitiate route discovery to the destination.
The diagram of propagation of route request (RREQ) packet
and path taken by route reply (RREP) packet for AODV is
shown in Fig. 3.
Fig. 3 AODV routing protocol with RREQ and RREP
message [12]
ii. DSR Routing Protocol
Dynamic Source Routing (DSR) is similar to AODV as it
establishes a route on-demand. It uses source routing instead
of relying on the routing table at each intermediate node.
Every node contains a route cache. The key distinguishing
feature of DSR is the use of source routing. That is, the sender
knows the complete hop-by-hop route to the destination.
These routes are stored in a route cache. The data packets
carry the source route in the packet header. Each entry in
route cache specifies the intermediate nodes to a destination.
The route cache is used to respond to RREQs even if it is not
the destination. The route cache is always updated when it
learns a new route [7].
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1360
The two major phases of the protocol are: route discovery
and route maintenance [10]. When the source node wants to
send a packet to a destination, it looks up its route cache to
determine if it already contains a route to the destination. If it
finds that an unexpired route to the destination exists, then it
uses this route to send the packet. But if the node does not
have such a route, then it initiates the route discovery process
by broadcasting a route request packet (RREQ). A route reply
(RREP) is generated when either the destination or an
intermediate node with current information about the
destination receives The process of route request (RREQ) and
route reply message (RREP) is shown in the route request
packet [9]. To send the route reply packet, the responding
node must have a route to the source. If it has a route to the
source in its route cache, it can use that route. The diagram of
building record route during route discovery and propagation
of route reply (RREP) packet with the route record for DSR is
displayed in Fig. 4.
1Source
8
6
7
5
4
3
2
Destination8
1
6
7
5
4
3
2
Source
(a) Building Record Route during Route Discovery
Destination
(b) Propagation of Route Reply (RREP) Packet with the Route Record
<1,2>
<1,3>
<1>
<1,3,5>
<1,4>
<1,3,5,7>
<1,4,6>
<1,4,6>
<1,4>
<1>
<1>
<1>
Fig. 4 Creation of the route record in DSR [10]
III. SIMULATION ENVIRONMENT AND PERFORMANCE
PARAMETERS
A realistic mobility model has been implemented based on
Manhattan Model. This model has been established for the
vital area of Mandalay Technological University (MTU). The
performances of routing protocols in mobile ad hoc networks
(MANETs) have been proposed to test with different network
areas such as 800 square meter and 500 square meter. The
performances of two ad hoc routing protocols are explored by
using three performance metrics. The network density is also
varied with different node numbers such as 10, 20, 30, 40 and
50 nodes. They are also simulated at the various mobility
speeds (2, 5, 10, 20 and 30 m/s) in both network areas
because every node in mobile ad hoc network changes
dynamically.
Fig. 5. Simulation Procedure of NS 2
The simulation time is set up to 500 seconds and the pause
time is 1 second. They are explored with the network
simulator (NS2) which is utilized as a main simulator for this
observation. The simulation procedure of NS2 is depicted in
fig. 5.
A. Simulation Environment
We make use of ns-2.35 which has support for simulating
a multi-hop wireless ad-hoc environment completed with
physical, data link, and medium access control (MAC) layer
models on ns-2. The protocols maintain a send buffer of 64
packets. It contains all data packets waiting for a route, such
as packets for which route discovery has started, but no reply
has arrived yet. To prevent indefinite buffering of packets,
packets waiting in the buffer for more than 30s are dropped.
All packets sent by the routing layer are queued at the
interface queue till the MAC layer transmits them. The
maximum size for interface queue is 50 packets. Routing
packets get higher priority than data packets. Our evaluations
are based on the simulation of 10, 20, 30, 40 and 50 wireless
nodes forming an ad hoc network, moving about over a
square (800m x 800m and 500m x 500m) flat space for 500s
of simulated time. A square space is chosen to allow free
movement of nodes with different density. To enable fair and
direct comparisons between the routing protocols, identical
loads and environmental conditions had to be maintained.
Each simulator run accepts an input scenario file describing
the motion of mobile nodes and also the sequence of packets
originated by the mobile node, along with time of change in
motion or packet origination pattern.
B. Performance Metrics
The performances of ad hoc routing protocols are explored
with three performance metrics in this observation. We
compare the performance of AODV and DSR according to
the following performance metrics: Packet delivery fraction:
the ratio of data packets delivered to the destinations to those
generated by the constant bit rate. Packet delivery fraction
(PDF) is the fraction of number of packet received at the
destination to the number of packet sent from the source
multiply by 100.
Average End-to-End delay of data packets: this includes
all possible delays caused by buffering during route
discovery, queuing at the interface queue, retransmission
delays at the MAC, propagation and transfer times. They are
average packet delivery fraction, average end-to-end delay
and average throughput.
Throughput is a very important parameter in evaluating
the modifications performance. It is calculated as the number
of bits received per second. Throughput is affected by the
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1361
number of packets dropped or left wait for a route which is
calculated as the summation of the number of packets
dropped or left wait for a route for all the nodes. There is two
representations of throughput; one is the amount of data
transferred over the period of time expressed in kilobits
per second (Kbps). The other is the packet delivery
percentage obtained from a ratio of the number of data
packets sent and the number of data packets received.
IV. RESULTS OF THE PERFORMANCES OF AODV AND DSR
This study presents the performances of AODV and DSR
routing protocols in mobile ad hoc network. They are
performed in the different coverage areas such as 800m × 800
m and 500m × 500 m. Moreover, they are also observed with
the different number of mobile nodes and the mobility speed
is varied, too. The simulation time is set up to 500 seconds
and the pause time is 1 second. The performance results of
AODV and DSR protocols are presented with each
performance metric at various mobility speeds for each
network area. Firstly, the results of both protocols for a
network with 800 square meters are presented with each
performance metric at different speeds. Secondly, the results
of both protocols for a network with 500 square meters are
presented with each performance metric at different speeds.
Finally, the results of the performance comparisons of two
routing protocols are presented using the realistic mobility
model.
The results of the performances of AODV and DSR
routing protocols for 800m × 800m are illustrated in the
following figures. The packet delivery fractions of both
routing protocols for different network density are depicted
in fig. 6 with the different speeds.
Fig. 6 Packet Delivery Fraction of AODV and DSR with 10,
30 and 50 wireless mobile nodes at different speeds.
The average end-to-end delays of both routing protocols
for different network density are depicted in fig. 7 with the
different speeds.
Fig. 7 Average end-to-end delay of AODV and DSR with 10,
30 and 50 wireless mobile nodes at different speeds
The average throughputs of both routing protocols for
different network density are depicted in fig. 8 with the
different speeds.
Fig. 8 Average Throughput of AODV and DSR with 10, 30
and 50 wireless mobile nodes at different speeds
The results of the performances of AODV and DSR
routing protocols for 500m × 500m are illustrated in the
following figures. The packet delivery fractions of both
routing protocols for different network density are depicted
in fig. 9 with the different speeds.
Fig. 9 Average PDF of AODV and DSR with 10, 30 and 50
wireless mobile nodes at different speeds
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1362
The average end-to-end delays of both routing protocols
for different network density are depicted in fig. 10 with the
different speeds.
Fig. 10 Average end-to-end delay of AODV and DSR with
10, 30 and 50 wireless mobile nodes at different speeds
Fig. 11 Average Throughput of AODV and DSR with 10, 30
and 50 wireless mobile nodes at different speeds
The average throughputs of both routing protocols for
different network density are depicted in fig. 11 with the
different speeds.
The performances of AODV and DSR routing protocols
are also investigated for the vital area of Mandalay
Technological University (MTU) by implementing a realistic
mobility model with 800 m2 network area. That mobility
model is established based on Manhattan Model. The vital
area of MTU is illustrated in fig. 12.
Fig. 12 The Block of the vital area of MTU
There are many mobility models to assess the performances
of routing protocols in NS 2. Among these mobility models,
Random Waypoint Mobility Model (RWMM) is a commonly
used model. However, the author would like to precise the
performances of routing protocols for the real network
application. Therefore, she specified the network area for
real application. And then, she implemented a realistic
mobility model based on Manhattan mobility model. The
implementation of the realistic mobility model for this
proposed mobile ad hoc network area can be seen as follow.
MANHATTAN
HOR_STREET_NUM 3
VER_STREET_NUM 5
LANE_NUM 16
LANE 0 0 1 0.10 332.33 999.90 332.33 4 0.00 1.00
CROSSPOINT 0 2 0 1 332.33 332.33
CROSSPOINT 1 2 1 -1 333.33 332.33
CROSSPOINT 2 3 0 1 665.67 332.33
CROSSPOINT 3 3 1 -1 666.67 332.33
LANE 0 1 -1 999.90 333.33 0.10 333.33 4 0.00 1.00
CROSSPOINT 0 3 1 -1 666.67 333.33
CROSSPOINT 1 3 0 1 665.67 333.33
CROSSPOINT 2 2 1 -1 333.33 333.33
CROSSPOINT 3 2 0 1 332.33 333.33
LANE 1 0 1 0.10 665.67 999.90 665.67 4 0.00 1.00
CROSSPOINT 0 2 0 1 332.33 665.67
CROSSPOINT 1 2 1 -1 333.33 665.67
CROSSPOINT 2 3 0 1 665.67 665.67
CROSSPOINT 3 3 1 -1 666.67 665.67
LANE 1 1 -1 999.90 666.67 0.10 666.67 4 0.00 1.00
CROSSPOINT 0 3 1 -1 666.67 666.67
CROSSPOINT 1 3 0 1 665.67 666.67
CROSSPOINT 2 2 1 -1 333.33 666.67
CROSSPOINT 3 2 0 1 332.33 666.67
LANE 2 0 1 332.33 999.90 332.33 0.10 4 0.00 1.00
CROSSPOINT 0 1 1 -1 332.33 666.67
CROSSPOINT 1 1 0 1 332.33 665.67
CROSSPOINT 2 0 1 -1 332.33 333.33
CROSSPOINT 3 0 0 1 332.33 332.33
LANE 2 1 -1 333.33 0.10 333.33 999.90 4 0.00 1.00
CROSSPOINT 0 0 0 1 333.33 332.33
CROSSPOINT 1 0 1 -1 333.33 333.33
CROSSPOINT 2 1 0 1 333.33 665.67
CROSSPOINT 3 1 1 -1 333.33 666.67
LANE 3 0 1 665.67 999.90 665.67 0.10 4 0.00 1.00
CROSSPOINT 0 1 1 -1 665.67 666.67
CROSSPOINT 1 1 0 1 665.67 665.67
CROSSPOINT 2 0 1 -1 665.67 333.33
CROSSPOINT 3 0 0 1 665.67 332.33
LANE 3 1 -1 666.67 0.10 666.67 999.90 4 0.00 1.00
CROSSPOINT 0 0 0 1 666.67 332.33
CROSSPOINT 1 0 1 -1 666.67 333.33
CROSSPOINT 2 1 0 1 666.67 665.67
CROSSPOINT 3 1 1 -1 666.67 666.67
The performance parameters which are used in this
observation is illustrated in Table 1.
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1363
The performances of AODV and DSR routing protocols are
explored for the various mobile nodes numbers with different
movement speeds by using the realistic mobility model.
They are observed with three performance metrics: packet
delivery fraction, average end-to-end delay and average
throughput. The diagrams of performance comparison for
two ad hoc routing protocols at different mobility speed using
realistic mobility model are shown in Figure. 13, 14, 15, 16
and 17.
The results for three performance metrics of both routing
protocols for the various mobile nodes numbers at 2 m/s
mobility speed is illustrated in fig. 13.
Fig. 13. The Performances of AODV and DSR for different
nodes at 2 m/s mobility speed
The results for three performance metrics of both routing
protocols for the various mobile nodes numbers at 5 m/s
mobility speed is illustrated in fig. 14.
Fig. 14. The Performances of AODV and DSR for different
nodes at 5 m/s mobility speed
The results for three performance metrics of both routing
protocols for the various mobile nodes numbers at 10 m/s
mobility speed is illustrated in fig. 15.
Fig. 15. The Performances of AODV and DSR for different
nodes at 10 m/s mobility speed
The results for three performance metrics of both routing
protocols for the various mobile nodes numbers at 20 m/s
mobility speed is illustrated in fig. 16.
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1364
Fig. 16. The Performances of AODV and DSR for different
nodes at 20 m/s mobility speed
The results for three performance metrics of both routing
protocols for the various mobile nodes numbers at 30 m/s
mobility speed is illustrated in fig. 17.
When the performances of both routing protocols
are explored by using realistic mobility model, the overall
results of both routing protocols are significantly better than
that of using random waypoint mobility model. In the
observation of using realistic model, the PDF performance is
from 97.67% to 99.87% at all movement speeds when the
nodes are set up to 20, but it is from 89.72% to 98.17% in the
observation using RWPMM. When the node number is
increased to 30 nodes, the PDF performance is from 91.44%
to 97.11%, on the other hand it is from 60.03% to 71.45% in
the observation using RWPMM. In the same way, when the
node number is raised to 50 nodes, it is from 59.79% to
86.79%, nevertheless but it is from 33.81% to 59.50% in the
observation using RWPMM. But, AODV routing protocol
outperforms DSR in mobile ad hoc network with larger node
numbers at all high movement speeds.
Fig. 17. The Performances of AODV and DSR for different
nodes at 30 m/s mobility speed
The average end-to-end delay of both routing protocols
using realistic mobility model is significantly lower than that
of using RWPMM. However, when the node number is
increased to 40 and 50, the results of both observations are
not quite different. Average throughput of the exploration of
using realistic mobility model is very higher than that of
using RWPMM. Average throughput of the exploration of
both investigations is quite different for all node numbers at
all speeds.
According to this exploration, AODV routing protocol can
perform well at all mobility speed. However, DSR routing
protocol cannot perform as well as AODV routing protocol at
higher mobility speed and larger node numbers. Therefore,
AODV should be used for this mobile ad hoc network.
V. CONCLUSION
The mobile ad hoc network has become popular in wireless
communications. This kind of networks is currently one of
the most important research subjects due to the huge variety
of applications. The performances of two ad hoc routing
protocols are evaluated in this observation. This study is
explored with the performances of AODV and DSR routing
protocols with 10, 30 and 50 wireless mobile nodes at the
different mobility speeds. It is also simulated for the different
network areas such as 500m × 500m and 800m × 800m. We
choose the traffic sources to be constant bit rate (CBR)
source. The source and destination pairs were spread
randomly over the network. Only 512-byte data packets were
used. Varying the number of CBR traffic sources was
approximately equivalent to varying the sending rate. Hence,
for these simulations we choose to fix sending rate at 4
packets per second, and used 3 different communication
patterns corresponding to 8, 25 and 40 connections
according to the number of nodes. We compare the
performances of AODV and DSR utilizing three
performance metrics: packet delivery fraction, average
end-to-end delay and average throughput.
For 800m × 800m network area, the PDF performance of
AODV is higher than that of DSR at all mobility speeds when
the number of nodes is set up to 10 nodes. However, there are
no very significant differences between those routing
protocols. When the number of nodes is set up to 30, the PDF
of AODV is significantly higher than that of DSR at all
speeds. And also, when the number of nodes is set up to 50,
the PDF of DSR is very lower than that of AODV at all
movement speeds. We can see that the higher the network
density, the lower the PDF performance for both routing
protocols. And then, we can also see that the lower the PDF
performance of DSR than AODV, the higher the network
density. Moreover, we can find that the higher the mobility
speed, the lower the PDF performances of both routing
protocols. Similarly, average end-to-end delay of DSR is
higher than that of AODV for all network densities at all
International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1365
high movement speeds generally. On the same way, the
throughput performances of both routing protocols are not
quite different for the low network density at low mobility
speeds. When the network density and speed is high, the
throughput of AODV is higher than that of DSR. AODV
routing protocol outperforms DSR routing protocol with high
network density at all movement speeds.
For 500m × 500m network area, the PDF performances of
AODV routing protocol are very well (nearly 100%) at all
mobility speeds for the network density with 10 nodes. That
of DSR routing protocol is nearly the same output except at
the highest speed. When the network density is set up to 30
nodes, the PDF performances of both routing protocols are
over 90 % except the performance of DSR at the highest
speed (30m/s). When it is set up to 50 nodes, the PDF
performances of AODV is over 50% and that of DSR is
around 50%. For the network density with 10 nodes and 30
nodes, the average end-to-end delay of DSR is slightly lower
than that of AODV at all speeds except at the highest speed
(30 m/s). However, when the network density is set up to 50
nodes, the average delay of DSR is higher than that of AODV
at all speeds. Correspondingly, the throughput performances
of both routing protocols are not quite different for the
network density with 10 nodes and 30 nodes at all speeds. On
the other hand, when the network density is set up to 50
nodes, the throughput of AODV is higher than that of DSR at
all speeds nearly.
According to these researches, we found that the routing
protocols can perform well in a small network area with low
network density because mobile ad hoc network is a
temporary network and it is also a self-configuration and
self-administration network without any centralized control.
Therefore, we can see that the larger the coverage network
area becomes, the lower the performance of the network can
achieve. We can exclaim that DSR routing protocol is
appropriate to small network area with low network density.
On the other hand, when we want to utilize the small network
area with high network density, AODV routing protocol is
very suitable according to this research. Moreover, AODV
routing protocol is much more appropriate than DSR routing
protocol for a large network area with high network density.
When the performances of both routing protocols are
explored by using realistic mobility model, the overall results
of both routing protocols are significantly better than that of
using random waypoint mobility model. In the observation of
using realistic model, the PDF performance is nearly 100% at
less node number at moderate speeds, but the maximum PDF
performance is 98.17% in the observation using RWPMM.
In contrast to the average end-to-end delay of both
observations are not quite different in the networks with
higher node numbers. However, the average delay of the
observation of using RWPMM is significantly higher than
that of the observation of using realistic mobility model. On
the other hand, the average throughputs of both observation
are not quite different from each other.
After all, by comparing the two observations of utilizing
the random waypoint mobility model and realistic mobility
model, the performances of routing protocols which use
realistic mobility model outperforms than that of the routing
protocols which utilize random waypoint mobility model.
Therefore, we can exclaim that the better performance of the
mobile ad hoc network can be achieved by implementing the
realistic mobility model for the proposed network area.
ACKNOWLEDGMENT
The author wishes to acknowledge especially to her
supervisor, Professor Dr. Zaw Min Naing, for his
accomplished guidance, persistent professional advices and
encouragement throughout the research and to her
co-supervisor, Associate Professor Dr. Hla Myo Tun, for his
valuable suggestions and priceless guidance. The author
would like to express the special thanks to the reviewers who
assess her paper, too.
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International Journal of Science, Engineering and Technology Research (IJSETR), Volume 3, Issue 5, May 2014
ISSN: 2278 – 7798
All Rights Reserved © 2014 IJSETR
1366
San San Naing is currently doing research for her doctoral degree in
Electronic and Communication from Mandalay Technological University,
Mandalay, Myanmar. Her main research interests are Mobile Ad hoc networks,
Routing Protocols and web Quality of Service in MANETs. Her e-mail address
Zaw Min Naing is a professor from Technological University (Maubin),
Maubin. He has got many research papers and international journals papers
concerned with electronics and communication technology. His e-mail address
Hla Myo Tun is an associate professor, Department of Electronic and
Communication, Mandalay Technological University, Mandalay, Myanmar.
He received a lot of international journal papers related with control
engineering, communication technology and electronic circuit design. His
e-mail address is [email protected].