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International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5



      Performance Evaluation of Aodv and Dsr Routing Protocols for Vbr
                      Traffic for 150 Nodes in Manets
                    Gurpreet Singh, 1 Atinderpal Singh2, Anantdeep Kaur3
                             1, 2
                               Department of CSE & IT, BBSBEC, Fatehgarh Sahib, Punjab, India
                       3
                           Assistant Professor, Management Wing, SBSSTC, Ferozepur, Punjab, India



Abstract:
          Mobile Ad hoc network (MANETs) are rapidly growing as an important area of wireless communication with the
revolutionary inventions in the mobile devices. Efficient routing protocols make MANETs reliable. Despite the
considerable simulation works, still more investigation is required in the performance evaluation of routing protocols for
multimedia traffic especially Variable Bit Rate(VBR).In this paper, we will conduct a number of simulations for the
performance evaluation of two popular routing protocols of MANET, namely AODV and DSR, for VBR multimedia
traffic using Real Time Protocol(RTP).We will investigate the performance using four metrics-packet received, throughput,
routing overhead and network load.

Keywords: MANETs; AODV; DSR; VBR; RTP.

I.     INTRODUCTION
         A Mobile Ad hoc network (MANET) [1] [2] is an autonomous collection of mobile routers or nodes
communicating over radio links. MANET is a temporary network without infrastructure. The wireless routers or nodes
moves randomly and organize themselves arbitrarily. The nodes directly communicate via wireless links within each
other’s radio range, while that are distant apart use other nodes as relay in a multihop routing function. As the nodes are
mobile, the structure of the network changes dynamically and unpredictably over time.Adhoc networks are self-configuring
and self-organizing, so to maintain communication between nodes in the network, each node behaves as a transmitter, a
host and a router.
         Due to growing usage of the portable devices and progress in the wireless communication, Mobile Ad hoc
networks are gaining importance due to its wide range of applications [3].Mobile Ad hoc networks are used in military
communication and operations, home appliances, emergency services, educational applications and entertainment.
         MANET has few challenges and limitations that have to be addressed [4].Limited radio transmission range,
routing overhead, battery constraints, security, etc. are some of inefficiencies in a MANET environment.
      In [5], the performance of three popular routing protocols AODV, DSR and OLSR is evaluated for multimedia data
in a multihop mobile network by taking different performance metrics. In this paper, we will evaluate the performance of
two reactive protocols AODV and DSR by taking the VBR multimedia transmission in a multihop mobile network. The
mobility scenario simulates the environment of a modern city, where mobile nodes are connected to each other and
communicates.
         This paper is organized as follows: The next section presents the main Ad hoc routing protocols AODV and DSR
that are used in the performance evaluation process. Section III presents the simulation set up and the performance
evaluation metrics. In section IV, we present the simulation results and performance comparison. And finally, we conclude
the paper and present the plans for the future work in section V.

II.    MOBILE ADHOC ROUTING PROTOCOLS
There are many different ways to classify the routing protocols of MANETs depending upon their network structure,
communication model, routing strategy and state information [6]. Depending upon the routing strategy, there are two types
of routing protocols: Table Driven and Source Initiated (On Demand).
       The first type is a proactive approach i.e. table driven. Routing information in the network maintained up to date.
Table driven protocols have lower latency but have high routing overhead. The routing overhead is high due to periodic
updations of routing tables. Some of main proactive protocols of MANET are DSDV, FSR and OLSR.
   The second type is source initiated. It is also known as On Demand or Reactive. Route id created only when demanded
by the source node. When a node wants to communicate in the network, it initiates a route discovery process within the
network. So, there is no need of periodic updates. Hence, the routing overhead is low but the latency is high. Some of main
reactive protocols of MANET are AODV, DSR and TORA. The mobile Ad hoc routing protocols considered in this study
are described below.




Issn 2250-3005(online)                                    September| 2012                                   Page 1583
International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5



III.   DYNAMIC SOURCE ROUTING (DSR)
          DSR [7] [8] is an On Demand routing protocol. DSR is based on the theory of source based routing and is a very
simple and efficient routing protocol. DSR is designed for use in multihop wireless Ad hoc networks of mobile nodes. The
DSR protocol works into two main mechanisms called Route Discovery and Route Maintenance. Route Discovery is the
mechanism in which a source node tending to send a packet to a destination obtains a source route to destination. It is
initiated only when a source node wants to send packet to a destination and doesn’t already know the route to it. And, then
it maintains that route in the cache of the nodes. Route Maintenance is the mechanism in which source node is able to
detect the link failures to the destination. It then repairs the route or finds an alternate route. It is used only when source is
sending packets to a destination.

 IV.   B. ADHOC ON DEMAND DISTANT VECTOR PROTOCOL (AODV)
        AODV [7] [9] is a reactive distant vector protocol. It mixes the property of DSR and DSDV. Routes discovered on
demand are maintained as long as they are required. AODV routing table maintains routing information of any route that
has been used recently within a time interval. The operation of AODV is loop free by use of sequence numbers which
indicate the freshness of the route. When links break, AODV causes the affected set of nodes to be notified to invalidate
the route. Route Request (RREQs), Route Replies (RREPs), and Route Errors (RRERs) are three message types defined by
AODV for its working.

V.   SIMULATION ENVIRONMENT
         To evaluate and compare the performance of these routing protocols in Mobile Ad hoc network, we performed
extensive simulations using NS-2 simulator [10]-[13]. Each simulator is carried out under the constant mobility.

                                                        TABLE 1
                                           THE SIMULATION PARAMETERS
       Experiment Parameter                 Experiment Value         Description
       Simulation                           200 S                    Simulation Duration
       Time

       Terrain Dimension                     1000*1000 m                               X,Y Dimension of Motion
       No. of Mobile Nodes                   100                                       No. of nodes in a network
       Node Placement                        Random waypoint                           Change Direction Randomly
       Mobility Speed                        0-50 mps                                  Mobility of Nodes

       Mobility Model                        Random                                    Mobility Direction
       Routing Protocols                     DSR, AODV                                 Path-finding
       MAC protocol                          802.11g                                   Wireless
       Traffic                               VBR
       Traffic rate                          25 pkt/sec
       Packet Send rate                      256kb
       Packet Size                           1 kb
       Pause Time                            100 sec


Performance Metrics

Packet received [14]: It is the number of packets received by the application layer of destination nodes.

Throughput [14]: It is the average at which data packet is delivered successfully from one node to another over a
communication network. It is usually measured in bits per second.
Throughput = (no of delivered packets * packet size) / total duration of simulation

Routing Overhead [14]: This is the total number of routing control packets generated by all nodes to the total data packets
during the simulation time.

Network Load [15]: It is the total traffic received by the network layer from the higher MAC that is accepted and queued
for transmission. It is measured as bits per second.




Issn 2250-3005(online)                                     September| 2012                                       Page 1584
International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5



VI. Simulation Results And Performance Comparison
Performance of AODV and DSR routing protocols is evaluated under Variable Bit Rate multimedia traffic.

1) Packet Received
       In the reactive protocols, AODV and DSR, AODV outperforms the DSR in terms of number of packets received by
all destination nodes.

                                       DSR                   AODV

                                       4569                  45183




                         Figure 1: Number of Packet Received of AODV and DSR for 100 nodes

      From the above figure, we have seen that the number of packets received in AODV protocol is very high than the
number of packets received in DSR protocol for 100 nodes.

2) Throughput
      Throughput is better for AODV protocol than DSR protocol.

                                       DSR                   AODV

                                       103.85                262.59




                                Figure 2: Throughput of AODV and DSR for 100 nodes



Issn 2250-3005(online)                                September| 2012                                    Page 1585
International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5



       From above figure, it is observed that the AODV protocol outperforms the DSR protocol in terms of throughput
when the number of nodes is 100.

3) Routing Overhead
      Routing Overhead is higher in case of AODV than DSR.


                                     DSR                   AODV

                                     37139                 45285




                           Figure 3: Routing Overhead for AODV and DSR for 100 nodes

      It is observed from the figure above; in which AODV present the worse behavior in terms of routing overhead
measurements than DSR for VBR traffic.

4) Network Load
      Network Load is very high for DSR protocol than AODV protocol.
                                      DSR                AODV

                                      8.12                 1.0




                             Figure 4: Network Load for AODV and DSR for 100 nodes

      As shown in the above figure that DSR has higher Network Load than AODV. With the increase in hops the
network overloads.



Issn 2250-3005(online)                              September| 2012                                   Page 1586
International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5



VII. CONCLUSION AND FUTURE WORK
         Network simulator NS-2.34 is used to evaluate and compare the performance of AODV and DSR protocols under
VBR traffic. The performance is compared in terms of number of packet received, throughput, routing overhead and
network overload when number of nodes is constant. Simulation results show that in case of number of packets received
AODV is ahead of DSR. And for throughput, AODV outperforms DSR. This shows that AODV has higher reliability. And
high routing overhead in AODV for VBR data for 100 node is due to on demand route discovery for routing. The high
network load of DSR worsens the performance of DSR as compared to AODV. This is due to source routing for route
discovery and hop by hop packet forwarding in DSR. So, AODV is best suited for delay sensitive RTP applications which
do not allow latency in the network. Thus from above investigations we conclude that AODV is a better option for VBR
multimedia traffic.
      In our future work, we will intend to do more simulations to evaluate more multimedia centric metrics for
multimedia data transmission and to enhance the performance of DSR. In addition to it, we plans to investigate the
performance of these protocols for congestion control mechanism by increasing the number of nodes for VBR traffic.

References
[1]    Vasudha Arora and C. Rama Krishna, “Performance Evaluation of Routing               protocols for MANETs under
       Different      Traffic Conditions”, 2nd IEEE International Conference on Computer Engineering and Information
       Technology, 2010.
[2]    Vikas Singla and Parveen Kakkar, “Traffic Pattern based performance comparison of Reactive and Proactive
       Protocols of Mobile Ad-hoc Networks”, International Journal of Computer Applications, Volume 5-No. 10, August
       2010.
[3]    Mobile Ad Hoc Networking: “An Essential Technology for Pervasive Computing”, Jun-Zhao Sun Media Team,
       Machine Vision and Media Processing Unit.
[4]    Krishna Moorthy Sivalingam, “Tutorial on Mobile Ad Hoc Networks”, 2003.
[5]    George Adam, Vaggelis Kapoulas, Chhristos Bouras, Georgios Kioumourtzis, Apostolos Gkamas and Nikos
       Tavoularis, “Performance Evaluation of Routing Protocols for multimedia transmission over mobile Ad hoc
       networks”,IFIP WMNC’2011.
[6]    Mehran Abolhasan, Tadeusz Wysocki, and Eryk Dutkiewicz, “A review of routing protocols for mobile ad hoc
       networks”, Technical report, Telecommunication and Information Research Institute, University of Wollongong,
       Wollongong, NSW 2522; Motorola Australia Research Centre, 12 Lord St., Botany, NSW 2525, Australia,2003.
[7]    Georgios Kiou Mourtzis, “Simulation and Evaluation of Routing Protocols for Mobile Ad hoc Networks”, Master
       thesis in Computer Science and Engineering, Naval Postgraduate School, Monterey California, September, 2005.
[8]    D.B Johnson, D.A Maltz, and Yih-Chun Hu., “The Dynamic Source Routing Protocol for Mobile Ad Hoc Networks
       (DSR)”, Internet draft (draft-ietf-manet-dsr- 10.txt), 19 July 2004.
[9]    C. Perkins E. Belding-Royer, and S.Das, “Ad hoc On- Demand Distance Vector (AODV) Routing”, RFC 3561,
       July2003.
[10]   “The Network Simulator version 2”, the source code of ns-allinone-2.34 can be downloaded from
       http://www.isi.edu/nsnam/ns/ns-build.html
[11]   Kevin Fall, Kannan Varadhan, and the VINT project (May, 2010), available at http://www.isi.edu/nsnam/ns/ns-
       documentation.html
[12]   Marc       Gresis,     “Tutorial       for     the      network      simulator  (ns-     2)”,      available  at
       http://www.isi.edu/nsnam/ns/tutorial/index.html
[13]   NS by example available at http://nile.wpi.edu/NS
[14]   Satveer Kaur, “Performance Comparison of DSR and AODV Routing Protocols with Efficient Mobility Model in
       Mobile Ad-Hoc Network”, IJCST Vol. 2, Issue 2, June 2011.
[15]   G.Rajkumar, R.Kasiram and D.Parthiban,” Optimizing Throughput with Reduction in Power Consumption and
       Performance       Comparison        of     DSR       and      AODV      Routing   Protocols”,     [ICCEET],2012.




Issn 2250-3005(online)                                 September| 2012                                  Page 1587

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  • 1. International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5 Performance Evaluation of Aodv and Dsr Routing Protocols for Vbr Traffic for 150 Nodes in Manets Gurpreet Singh, 1 Atinderpal Singh2, Anantdeep Kaur3 1, 2 Department of CSE & IT, BBSBEC, Fatehgarh Sahib, Punjab, India 3 Assistant Professor, Management Wing, SBSSTC, Ferozepur, Punjab, India Abstract: Mobile Ad hoc network (MANETs) are rapidly growing as an important area of wireless communication with the revolutionary inventions in the mobile devices. Efficient routing protocols make MANETs reliable. Despite the considerable simulation works, still more investigation is required in the performance evaluation of routing protocols for multimedia traffic especially Variable Bit Rate(VBR).In this paper, we will conduct a number of simulations for the performance evaluation of two popular routing protocols of MANET, namely AODV and DSR, for VBR multimedia traffic using Real Time Protocol(RTP).We will investigate the performance using four metrics-packet received, throughput, routing overhead and network load. Keywords: MANETs; AODV; DSR; VBR; RTP. I. INTRODUCTION A Mobile Ad hoc network (MANET) [1] [2] is an autonomous collection of mobile routers or nodes communicating over radio links. MANET is a temporary network without infrastructure. The wireless routers or nodes moves randomly and organize themselves arbitrarily. The nodes directly communicate via wireless links within each other’s radio range, while that are distant apart use other nodes as relay in a multihop routing function. As the nodes are mobile, the structure of the network changes dynamically and unpredictably over time.Adhoc networks are self-configuring and self-organizing, so to maintain communication between nodes in the network, each node behaves as a transmitter, a host and a router. Due to growing usage of the portable devices and progress in the wireless communication, Mobile Ad hoc networks are gaining importance due to its wide range of applications [3].Mobile Ad hoc networks are used in military communication and operations, home appliances, emergency services, educational applications and entertainment. MANET has few challenges and limitations that have to be addressed [4].Limited radio transmission range, routing overhead, battery constraints, security, etc. are some of inefficiencies in a MANET environment. In [5], the performance of three popular routing protocols AODV, DSR and OLSR is evaluated for multimedia data in a multihop mobile network by taking different performance metrics. In this paper, we will evaluate the performance of two reactive protocols AODV and DSR by taking the VBR multimedia transmission in a multihop mobile network. The mobility scenario simulates the environment of a modern city, where mobile nodes are connected to each other and communicates. This paper is organized as follows: The next section presents the main Ad hoc routing protocols AODV and DSR that are used in the performance evaluation process. Section III presents the simulation set up and the performance evaluation metrics. In section IV, we present the simulation results and performance comparison. And finally, we conclude the paper and present the plans for the future work in section V. II. MOBILE ADHOC ROUTING PROTOCOLS There are many different ways to classify the routing protocols of MANETs depending upon their network structure, communication model, routing strategy and state information [6]. Depending upon the routing strategy, there are two types of routing protocols: Table Driven and Source Initiated (On Demand). The first type is a proactive approach i.e. table driven. Routing information in the network maintained up to date. Table driven protocols have lower latency but have high routing overhead. The routing overhead is high due to periodic updations of routing tables. Some of main proactive protocols of MANET are DSDV, FSR and OLSR. The second type is source initiated. It is also known as On Demand or Reactive. Route id created only when demanded by the source node. When a node wants to communicate in the network, it initiates a route discovery process within the network. So, there is no need of periodic updates. Hence, the routing overhead is low but the latency is high. Some of main reactive protocols of MANET are AODV, DSR and TORA. The mobile Ad hoc routing protocols considered in this study are described below. Issn 2250-3005(online) September| 2012 Page 1583
  • 2. International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5 III. DYNAMIC SOURCE ROUTING (DSR) DSR [7] [8] is an On Demand routing protocol. DSR is based on the theory of source based routing and is a very simple and efficient routing protocol. DSR is designed for use in multihop wireless Ad hoc networks of mobile nodes. The DSR protocol works into two main mechanisms called Route Discovery and Route Maintenance. Route Discovery is the mechanism in which a source node tending to send a packet to a destination obtains a source route to destination. It is initiated only when a source node wants to send packet to a destination and doesn’t already know the route to it. And, then it maintains that route in the cache of the nodes. Route Maintenance is the mechanism in which source node is able to detect the link failures to the destination. It then repairs the route or finds an alternate route. It is used only when source is sending packets to a destination. IV. B. ADHOC ON DEMAND DISTANT VECTOR PROTOCOL (AODV) AODV [7] [9] is a reactive distant vector protocol. It mixes the property of DSR and DSDV. Routes discovered on demand are maintained as long as they are required. AODV routing table maintains routing information of any route that has been used recently within a time interval. The operation of AODV is loop free by use of sequence numbers which indicate the freshness of the route. When links break, AODV causes the affected set of nodes to be notified to invalidate the route. Route Request (RREQs), Route Replies (RREPs), and Route Errors (RRERs) are three message types defined by AODV for its working. V. SIMULATION ENVIRONMENT To evaluate and compare the performance of these routing protocols in Mobile Ad hoc network, we performed extensive simulations using NS-2 simulator [10]-[13]. Each simulator is carried out under the constant mobility. TABLE 1 THE SIMULATION PARAMETERS Experiment Parameter Experiment Value Description Simulation 200 S Simulation Duration Time Terrain Dimension 1000*1000 m X,Y Dimension of Motion No. of Mobile Nodes 100 No. of nodes in a network Node Placement Random waypoint Change Direction Randomly Mobility Speed 0-50 mps Mobility of Nodes Mobility Model Random Mobility Direction Routing Protocols DSR, AODV Path-finding MAC protocol 802.11g Wireless Traffic VBR Traffic rate 25 pkt/sec Packet Send rate 256kb Packet Size 1 kb Pause Time 100 sec Performance Metrics Packet received [14]: It is the number of packets received by the application layer of destination nodes. Throughput [14]: It is the average at which data packet is delivered successfully from one node to another over a communication network. It is usually measured in bits per second. Throughput = (no of delivered packets * packet size) / total duration of simulation Routing Overhead [14]: This is the total number of routing control packets generated by all nodes to the total data packets during the simulation time. Network Load [15]: It is the total traffic received by the network layer from the higher MAC that is accepted and queued for transmission. It is measured as bits per second. Issn 2250-3005(online) September| 2012 Page 1584
  • 3. International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5 VI. Simulation Results And Performance Comparison Performance of AODV and DSR routing protocols is evaluated under Variable Bit Rate multimedia traffic. 1) Packet Received In the reactive protocols, AODV and DSR, AODV outperforms the DSR in terms of number of packets received by all destination nodes. DSR AODV 4569 45183 Figure 1: Number of Packet Received of AODV and DSR for 100 nodes From the above figure, we have seen that the number of packets received in AODV protocol is very high than the number of packets received in DSR protocol for 100 nodes. 2) Throughput Throughput is better for AODV protocol than DSR protocol. DSR AODV 103.85 262.59 Figure 2: Throughput of AODV and DSR for 100 nodes Issn 2250-3005(online) September| 2012 Page 1585
  • 4. International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5 From above figure, it is observed that the AODV protocol outperforms the DSR protocol in terms of throughput when the number of nodes is 100. 3) Routing Overhead Routing Overhead is higher in case of AODV than DSR. DSR AODV 37139 45285 Figure 3: Routing Overhead for AODV and DSR for 100 nodes It is observed from the figure above; in which AODV present the worse behavior in terms of routing overhead measurements than DSR for VBR traffic. 4) Network Load Network Load is very high for DSR protocol than AODV protocol. DSR AODV 8.12 1.0 Figure 4: Network Load for AODV and DSR for 100 nodes As shown in the above figure that DSR has higher Network Load than AODV. With the increase in hops the network overloads. Issn 2250-3005(online) September| 2012 Page 1586
  • 5. International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5 VII. CONCLUSION AND FUTURE WORK Network simulator NS-2.34 is used to evaluate and compare the performance of AODV and DSR protocols under VBR traffic. The performance is compared in terms of number of packet received, throughput, routing overhead and network overload when number of nodes is constant. Simulation results show that in case of number of packets received AODV is ahead of DSR. And for throughput, AODV outperforms DSR. This shows that AODV has higher reliability. And high routing overhead in AODV for VBR data for 100 node is due to on demand route discovery for routing. The high network load of DSR worsens the performance of DSR as compared to AODV. This is due to source routing for route discovery and hop by hop packet forwarding in DSR. So, AODV is best suited for delay sensitive RTP applications which do not allow latency in the network. Thus from above investigations we conclude that AODV is a better option for VBR multimedia traffic. In our future work, we will intend to do more simulations to evaluate more multimedia centric metrics for multimedia data transmission and to enhance the performance of DSR. In addition to it, we plans to investigate the performance of these protocols for congestion control mechanism by increasing the number of nodes for VBR traffic. References [1] Vasudha Arora and C. Rama Krishna, “Performance Evaluation of Routing protocols for MANETs under Different Traffic Conditions”, 2nd IEEE International Conference on Computer Engineering and Information Technology, 2010. [2] Vikas Singla and Parveen Kakkar, “Traffic Pattern based performance comparison of Reactive and Proactive Protocols of Mobile Ad-hoc Networks”, International Journal of Computer Applications, Volume 5-No. 10, August 2010. [3] Mobile Ad Hoc Networking: “An Essential Technology for Pervasive Computing”, Jun-Zhao Sun Media Team, Machine Vision and Media Processing Unit. [4] Krishna Moorthy Sivalingam, “Tutorial on Mobile Ad Hoc Networks”, 2003. [5] George Adam, Vaggelis Kapoulas, Chhristos Bouras, Georgios Kioumourtzis, Apostolos Gkamas and Nikos Tavoularis, “Performance Evaluation of Routing Protocols for multimedia transmission over mobile Ad hoc networks”,IFIP WMNC’2011. [6] Mehran Abolhasan, Tadeusz Wysocki, and Eryk Dutkiewicz, “A review of routing protocols for mobile ad hoc networks”, Technical report, Telecommunication and Information Research Institute, University of Wollongong, Wollongong, NSW 2522; Motorola Australia Research Centre, 12 Lord St., Botany, NSW 2525, Australia,2003. [7] Georgios Kiou Mourtzis, “Simulation and Evaluation of Routing Protocols for Mobile Ad hoc Networks”, Master thesis in Computer Science and Engineering, Naval Postgraduate School, Monterey California, September, 2005. [8] D.B Johnson, D.A Maltz, and Yih-Chun Hu., “The Dynamic Source Routing Protocol for Mobile Ad Hoc Networks (DSR)”, Internet draft (draft-ietf-manet-dsr- 10.txt), 19 July 2004. [9] C. Perkins E. Belding-Royer, and S.Das, “Ad hoc On- Demand Distance Vector (AODV) Routing”, RFC 3561, July2003. [10] “The Network Simulator version 2”, the source code of ns-allinone-2.34 can be downloaded from http://www.isi.edu/nsnam/ns/ns-build.html [11] Kevin Fall, Kannan Varadhan, and the VINT project (May, 2010), available at http://www.isi.edu/nsnam/ns/ns- documentation.html [12] Marc Gresis, “Tutorial for the network simulator (ns- 2)”, available at http://www.isi.edu/nsnam/ns/tutorial/index.html [13] NS by example available at http://nile.wpi.edu/NS [14] Satveer Kaur, “Performance Comparison of DSR and AODV Routing Protocols with Efficient Mobility Model in Mobile Ad-Hoc Network”, IJCST Vol. 2, Issue 2, June 2011. [15] G.Rajkumar, R.Kasiram and D.Parthiban,” Optimizing Throughput with Reduction in Power Consumption and Performance Comparison of DSR and AODV Routing Protocols”, [ICCEET],2012. Issn 2250-3005(online) September| 2012 Page 1587