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Papers by Venkataramana Attada

Research paper thumbnail of A Methodology for Automatic Detection and Classification of Pests using Optimized SVM in Greenhouse Crops

International Journal of Engineering and Advanced Technology, 2019

Digital revolution is taking place in every industry. The technologies namely Cloud Computing and... more Digital revolution is taking place in every industry. The technologies namely Cloud Computing and the Internet of Things (IoT) are considered to be as a digital revolution. Comparatively with other industries Agriculture industry has less usage of these digital revolutionary technologies. In recent years Agriculture industry uses such type of digital revolution technologies to counterpart traditional practices which greatly influence the productivity. The IoT is set to push the future of farming to the next level by collecting the production data which includes weather and soil data, image data of crop, pests, etc. through internet enabled communication objects. Performing computation and providing advisory on this large scale of data that is collected by communication objects by Cloud Computing technology in terms of Leaf is point of interest which has infestation problem with biological organisms such as pests observed by naked eye is time consuming. We make use of digital revolut...

Research paper thumbnail of Prediction of Brinjal Plant Disease Using Support Vector Machine and Convolutional Neural Network Algorithm Based on Deep Learning

Journal of Mobile Multimedia, 2022

Plant pathogens prediction is the prerequisite for timely and productive control of plant pathoge... more Plant pathogens prediction is the prerequisite for timely and productive control of plant pathogens within complicated environments. However, the white mold is a complicated disease in a brinjal plant. Hence, to vanquish these difficulties a novel Deep Learning Integration (DLI) Techniques has been proposed. In Proposed system, classification is carried out by Support Vector Machine (SVM) and prediction is carried out by Convolutional Neural Network (CNN) Algorithm to predict the plant illness in Brinjal with high accuracy of 99.4%.

Research paper thumbnail of Analyzing the impact of Simulation Area on the Performance of AODV, DSR, AOMDV and DSDV Routing Protocols for MANETS under Two-ray and Shadowing Propagation Models

A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified ... more A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified range. MANETs can be easily organized without the aid of any infrastructure. Due to the nature of shared resources performance of routing protocols and congestion control is a critical issue in mobile Ad hoc networks. In this paper we formulate different simulations using NS2 for Ad hoc networks of different sizes. This paper analyzed impact of Simulation area on the performance of some commonly used routing protocols under the radio propagation models Two-ray and shadowing. The performance metrics used are Throughput, End-to-End Delay and PDF (Packet Delivery Fraction). Simulation experiments found that the impact of dimension filed of mobile nodes shows significant changes on the performance AODV and DSR.

Research paper thumbnail of Investigating the impact of Node Traversal Time on the Performance of DYMO in MANETs

Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined ... more Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined by IETF. MANETs presents several desirable properties like dynamic topology, Easy of deployment and robustness, are qualify them as an attractive topic for the research community finding feasible QoS routes is a challenging issue in MANETs. The choice of the stable values in protocol configuration will affect correctness of protocol. In Mobile ad hoc networks DYMO protocol suggests that the Node Traversal Time (NTT) should be a constant value, but does not refer to how this value to be adjusted with network size. This paper investigates the impact of NTT value on the performance of DYMO routing protocol. Experimental results suggest that impact of NTT shows significant progress on the performance of DYMO. This paper demonstrates that in a dynamic environment we are not supposed to use constant values like NTT in protocol configuration and suggests that the Node Traversal Time should be a...

Research paper thumbnail of Impact of MAC Layer on AODV and LAR Routing Protocols in MANETs

International Journal of Computer Applications, 2013

Research paper thumbnail of Performance Evaluation of DSR and LAR Routing Protocols with MAC Layer in MANET’s

In the past two decades, we have seen a rapid development in the area of mobile computing and com... more In the past two decades, we have seen a rapid development in the area of mobile computing and communications due to the explosion of inexpensive, broadly available wireless devices. A mobile ad hoc network is an independent collection of mobile devices that communicate with each other over wireless links and cooperate in a distributed manner in order to provide the necessary network functionality in the absence of a fixed infrastructure. Each device in a MANET is free to move independently in any direction, and will therefore change its links to other devices frequently. In this paper we have done the performance evolution of DSR and LAR routing protocols for MAC layer in MANETs with varying network size. Number of simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput, End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA is suitable for DSR where as only 802.11 is suitable for LAR. Ke...

Research paper thumbnail of Enhance the Quality of Service in Mobile Ad Hoc Networks by Using Fuzzy Based NTT–DYMO

The dynamic nature of Mobile Ad hoc Networks (MANETs) demands a new-fangled set of communication ... more The dynamic nature of Mobile Ad hoc Networks (MANETs) demands a new-fangled set of communication strategies to enhance the performance of Quality of Service (QoS). It is very difficult to find viable QoS routes in MANETs due to its environment. AODV version 2 is called Dynamic MANET On-demand (DYMO) Routing protocol. Drawback of AODV is, it does not support larger networks. DYMO supports both medium and larger networks. To enhance the performance of DYMO, this paper proposes FBNTT DYMO by applying dynamic Node Traversal Time (NTT) in place of defacto NTT using fuzzy logic and Matlab. Fuzzy concept is used by taking network size and mobility is inputs and NTT as output. NTT plays a vital role in improving QoS in MANETs. For the Existing DYMO the default NTT value is 90 ms in QualNet simulator, however in a lively and dynamic environment we should not depend on the static values during protocol configuration. This paper implements FBNTT DYMO using QualNet simulator. The QoS metrics us...

Research paper thumbnail of The Research Framework for Quantitative Safety Assessment for Safety-Critical Computer Systems

Indian Journal of Science and Technology

Research paper thumbnail of Iimpact of Transmission rate on AODV and DSR Protocols in MANETs under Responsive and Non-responsive Traffic

The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utiliz... more The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utilization and shared nature of resources causes QoS problems in ad hoc networks. Providing QoS is a severe problem in mobile ad hoc networks. The main focus of this paper is to analyze the performance of AODV and DSR routing protocols in MANETs under responsive and non-responsive traffic by varying the transmission rate. Apart from that, this paper also discusses the various issues related to congestion in ad hoc networks. Simulations are carried out using ns-2. The QoS parameters used in this paper are throughput, End-to-End delay and Packet Delivery Fraction. From the experimental results it is found that impact of transmission rate shows significant changes on the performance AODV and DSR. By increasing transmission rate throughput also increase but at a particular transmission rate, it is observed that there is a plunge in throughput; this point is call converging point to predict the co...

Research paper thumbnail of Investigating the Impact of 802.11 and CSMA ON AODV and DSR Routing Protocols in MANETS Using GloMoSim

A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devic... more A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devices connected by wireless links. Each device in a MANET is free to move independently in any direction, and change its links to other devices frequently. Mobile means moving and Ad Hoc means temporary without any fixed infrastructure, so mobile ad hoc networks are a kind of temporary networks in which nodes are moving without any fixed infrastructure or centralized administration. This paper investigates the impact of MAC protocols 802.11 and CSMA on two reactive routing protocols AODV and DSR in MANETs with varying network size. Number of simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput, End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA is suitable for AODV where as only 802.11 is suitable for DSR.

Research paper thumbnail of Cross Layer Design Approach to Enhance the Quality of Service in Mobile Ad Hoc Networks

Wireless Personal Communications, 2015

ABSTRACT The infrastructure-less and dynamic nature of mobile ad hoc networks demands a new set o... more ABSTRACT The infrastructure-less and dynamic nature of mobile ad hoc networks demands a new set of networking strategies to improve the performance of quality of service (QoS). Providing QoS is a major issue in Manets. The traditional layered approach does not fit well for ad hoc networks due to high mobility and dynamic topology. This paper implements the cross layer design approach on DYMO routing protocol in Manets by using Qualnet simulator in both traditional layered approach and proposed cross layer approach. The proposed methodology uses four QoS metrics: throughput, end-to-end delay, packet delivery ratio and jitter. The experimental result reveals that QoS performance is enhanced in CLD approach for DYMO. The throughput in traditional layered approach for DYMO is 1961 b/s, whereas in the CLD approach it is 2986 b/s. Finally this paper concludes that cross layer approach significantly improves the QoS performance when compared with layered approach.

Research paper thumbnail of Analyzing the impact of Transmission rate on the Performance of AODV and DSR Protocols in MANETs under Responsive and Non-responsive Traffic

The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utiliz... more The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utilization and shared nature of resources causes QoS problems in ad hoc networks. Providing QoS is a severe problem in mobile ad hoc networks. The main focus of this paper is to analyze the performance of AODV and DSR routing protocols in MANETs under responsive and non-responsive traffic by varying the transmission rate. Apart from that, this paper also discusses the various issues related to congestion in ad hoc networks. Simulations are carried out using ns-2. The QoS parameters used in this paper are throughput, End-to-End delay and Packet Delivery Fraction. From the experimental results it is found that impact of transmission rate shows significant changes on the performance AODV and DSR. By increasing transmission rate throughput also increase but at a particular transmission rate, it is observed that there is a plunge in throughput; this point is call converging point to predict the congestion and asses the performance of the protocol. The authors found that performance of DSR is better in terms of throughput when compared to AODV under TCP traffic. There is no major impact of transmission rate on throughput for DSR under UDP traffic.
Keywords- AODV; DSR; QoS; MANET; TCP

Research paper thumbnail of Investigating the impact of Node Traversal Time on the Performance DYMO in MANETs

Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined ... more Mobile Ad hoc Network is an emerging area in the present
mobile world. Its standards are defined by IETF. MANETs
presents several desirable properties like dynamic topology,
Easy of deployment and robustness, are qualify them as an
attractive topic for the research community finding feasible
QoS routes is a challenging issue in MANETs. The choice of
the stable values in protocol configuration will affect
correctness of protocol. In Mobile ad hoc networks DYMO
protocol suggests that the Node Traversal Time (NTT)
should be a constant value, but does not refer to how this
value to be adjusted with network size. This paper
investigates the impact of NTT value on the performance of
DYMO routing protocol. Experimental results suggest that
impact of NTT shows significant progress on the
performance of DYMO. This paper demonstrates that in a
dynamic environment we are not supposed to use constant
values like NTT in protocol configuration and suggests that
the Node Traversal Time should be a suitable value with the
network size.
Keywords: MANET, IETF, NTT, DYMO, AODV

Research paper thumbnail of Performance Evaluation of DSR and LAR Routing Protocols with MAC Layer in MANET’s

In the past two decades, we have seen a rapid development in the area of mobile computing and com... more In the past two decades, we have seen a rapid development in the area of mobile computing and
communications due to the explosion of inexpensive, broadly available wireless devices. A mobile ad hoc
network is an independent collection of mobile devices that communicate with each other over wireless links
and cooperate in a distributed manner in order to provide the necessary network functionality in the absence
of a fixed infrastructure. Each device in a MANET is free to move independently in any direction, and will
therefore change its links to other devices frequently. In this paper we have done the performance evolution
of DSR and LAR routing protocols for MAC layer in MANETs with varying network size. Number of
simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput,
End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA
is suitable for DSR where as only 802.11 is suitable for LAR.

Research paper thumbnail of Analyzing the impact of Simulation Area on the Performance of

A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified ... more A Mobile Ad Hoc Network consists of mobile nodes which are
move arbitrarily within the specified range. MANETs can be
easily organized without the aid of any infrastructure. Due to
the nature of shared resources performance of routing
protocols and congestion control is a critical issue in mobile
Ad hoc networks. In this paper we formulate different
simulations using NS2 for Ad hoc networks of different sizes.
This paper analyzed impact of Simulation area on the
performance of some commonly used routing protocols under
the radio propagation models Two-ray and shadowing. The
performance metrics used are Throughput, End-to-End Delay
and PDF (Packet Delivery Fraction). Simulation experiments
found that the impact of dimension filed of mobile nodes
shows significant changes on the performance AODV and
DSR.
Keywords: MANET, NS2, PDF, TWO-RAY, SHADOWING

Research paper thumbnail of Investigating the Impact of 802.11 and CSMA ON AODV

A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devic... more A Mobile Ad-Hoc Network (MANET) is a self-configuring
infrastructure less network of mobile devices connected by wireless
links. Each device in a MANET is free to move independently
in any direction, and change its links to other devices frequently.
Mobile means moving and Ad Hoc means temporary without
any fixed infrastructure, so mobile ad hoc networks are a kind
of temporary networks in which nodes are moving without any
fixed infrastructure or centralized administration. This paper
investigates the impact of MAC protocols 802.11 and CSMA
on two reactive routing protocols AODV and DSR in MANETs
with varying network size. Number of simulation scenarios was
carried out by using Glomosim-2.03 with the simulation metrics
like Throughput, End-to-End Delay and Packer Delivery Ratio.
From simulation results we found that both 802.11 and CSMA is
suitable for AODV where as only 802.11 is suitable for DSR.

Research paper thumbnail of Impact of MAC Layer on AODV and LAR Routing Protocols in MANETs

A Mobile Ad hoc Network is a type of ad hoc network. It can change its location configuration dyn... more A Mobile Ad hoc Network is a type of ad hoc network. It can change its location configuration dynamically. It is an infrastructure-less network. Due to the complex nature of MANETS, their development processes face several challenges. One of such key challenge is routing. Several routing protocols have already been proposed for MANETs. This paper examines the impact of MAC protocols 802.11 and CSMA on the two on demand routing protocols AODV and LAR in MANETs with varying Node density in the network. Number of simulation scenarios was carried out by using Glomosim-2.03. The simulation metrics used are Throughput, Delay and PDR. Simulation experiments found that both 802.11 and CSMA is suitable for AODV where as only 802.11 is suitable for LAR.

Research paper thumbnail of Congestion Control for Mobile Ad-hoc Networks

Research paper thumbnail of A Methodology for Automatic Detection and Classification of Pests using Optimized SVM in Greenhouse Crops

International Journal of Engineering and Advanced Technology, 2019

Digital revolution is taking place in every industry. The technologies namely Cloud Computing and... more Digital revolution is taking place in every industry. The technologies namely Cloud Computing and the Internet of Things (IoT) are considered to be as a digital revolution. Comparatively with other industries Agriculture industry has less usage of these digital revolutionary technologies. In recent years Agriculture industry uses such type of digital revolution technologies to counterpart traditional practices which greatly influence the productivity. The IoT is set to push the future of farming to the next level by collecting the production data which includes weather and soil data, image data of crop, pests, etc. through internet enabled communication objects. Performing computation and providing advisory on this large scale of data that is collected by communication objects by Cloud Computing technology in terms of Leaf is point of interest which has infestation problem with biological organisms such as pests observed by naked eye is time consuming. We make use of digital revolut...

Research paper thumbnail of Prediction of Brinjal Plant Disease Using Support Vector Machine and Convolutional Neural Network Algorithm Based on Deep Learning

Journal of Mobile Multimedia, 2022

Plant pathogens prediction is the prerequisite for timely and productive control of plant pathoge... more Plant pathogens prediction is the prerequisite for timely and productive control of plant pathogens within complicated environments. However, the white mold is a complicated disease in a brinjal plant. Hence, to vanquish these difficulties a novel Deep Learning Integration (DLI) Techniques has been proposed. In Proposed system, classification is carried out by Support Vector Machine (SVM) and prediction is carried out by Convolutional Neural Network (CNN) Algorithm to predict the plant illness in Brinjal with high accuracy of 99.4%.

Research paper thumbnail of Analyzing the impact of Simulation Area on the Performance of AODV, DSR, AOMDV and DSDV Routing Protocols for MANETS under Two-ray and Shadowing Propagation Models

A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified ... more A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified range. MANETs can be easily organized without the aid of any infrastructure. Due to the nature of shared resources performance of routing protocols and congestion control is a critical issue in mobile Ad hoc networks. In this paper we formulate different simulations using NS2 for Ad hoc networks of different sizes. This paper analyzed impact of Simulation area on the performance of some commonly used routing protocols under the radio propagation models Two-ray and shadowing. The performance metrics used are Throughput, End-to-End Delay and PDF (Packet Delivery Fraction). Simulation experiments found that the impact of dimension filed of mobile nodes shows significant changes on the performance AODV and DSR.

Research paper thumbnail of Investigating the impact of Node Traversal Time on the Performance of DYMO in MANETs

Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined ... more Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined by IETF. MANETs presents several desirable properties like dynamic topology, Easy of deployment and robustness, are qualify them as an attractive topic for the research community finding feasible QoS routes is a challenging issue in MANETs. The choice of the stable values in protocol configuration will affect correctness of protocol. In Mobile ad hoc networks DYMO protocol suggests that the Node Traversal Time (NTT) should be a constant value, but does not refer to how this value to be adjusted with network size. This paper investigates the impact of NTT value on the performance of DYMO routing protocol. Experimental results suggest that impact of NTT shows significant progress on the performance of DYMO. This paper demonstrates that in a dynamic environment we are not supposed to use constant values like NTT in protocol configuration and suggests that the Node Traversal Time should be a...

Research paper thumbnail of Impact of MAC Layer on AODV and LAR Routing Protocols in MANETs

International Journal of Computer Applications, 2013

Research paper thumbnail of Performance Evaluation of DSR and LAR Routing Protocols with MAC Layer in MANET’s

In the past two decades, we have seen a rapid development in the area of mobile computing and com... more In the past two decades, we have seen a rapid development in the area of mobile computing and communications due to the explosion of inexpensive, broadly available wireless devices. A mobile ad hoc network is an independent collection of mobile devices that communicate with each other over wireless links and cooperate in a distributed manner in order to provide the necessary network functionality in the absence of a fixed infrastructure. Each device in a MANET is free to move independently in any direction, and will therefore change its links to other devices frequently. In this paper we have done the performance evolution of DSR and LAR routing protocols for MAC layer in MANETs with varying network size. Number of simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput, End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA is suitable for DSR where as only 802.11 is suitable for LAR. Ke...

Research paper thumbnail of Enhance the Quality of Service in Mobile Ad Hoc Networks by Using Fuzzy Based NTT–DYMO

The dynamic nature of Mobile Ad hoc Networks (MANETs) demands a new-fangled set of communication ... more The dynamic nature of Mobile Ad hoc Networks (MANETs) demands a new-fangled set of communication strategies to enhance the performance of Quality of Service (QoS). It is very difficult to find viable QoS routes in MANETs due to its environment. AODV version 2 is called Dynamic MANET On-demand (DYMO) Routing protocol. Drawback of AODV is, it does not support larger networks. DYMO supports both medium and larger networks. To enhance the performance of DYMO, this paper proposes FBNTT DYMO by applying dynamic Node Traversal Time (NTT) in place of defacto NTT using fuzzy logic and Matlab. Fuzzy concept is used by taking network size and mobility is inputs and NTT as output. NTT plays a vital role in improving QoS in MANETs. For the Existing DYMO the default NTT value is 90 ms in QualNet simulator, however in a lively and dynamic environment we should not depend on the static values during protocol configuration. This paper implements FBNTT DYMO using QualNet simulator. The QoS metrics us...

Research paper thumbnail of The Research Framework for Quantitative Safety Assessment for Safety-Critical Computer Systems

Indian Journal of Science and Technology

Research paper thumbnail of Iimpact of Transmission rate on AODV and DSR Protocols in MANETs under Responsive and Non-responsive Traffic

The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utiliz... more The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utilization and shared nature of resources causes QoS problems in ad hoc networks. Providing QoS is a severe problem in mobile ad hoc networks. The main focus of this paper is to analyze the performance of AODV and DSR routing protocols in MANETs under responsive and non-responsive traffic by varying the transmission rate. Apart from that, this paper also discusses the various issues related to congestion in ad hoc networks. Simulations are carried out using ns-2. The QoS parameters used in this paper are throughput, End-to-End delay and Packet Delivery Fraction. From the experimental results it is found that impact of transmission rate shows significant changes on the performance AODV and DSR. By increasing transmission rate throughput also increase but at a particular transmission rate, it is observed that there is a plunge in throughput; this point is call converging point to predict the co...

Research paper thumbnail of Investigating the Impact of 802.11 and CSMA ON AODV and DSR Routing Protocols in MANETS Using GloMoSim

A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devic... more A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devices connected by wireless links. Each device in a MANET is free to move independently in any direction, and change its links to other devices frequently. Mobile means moving and Ad Hoc means temporary without any fixed infrastructure, so mobile ad hoc networks are a kind of temporary networks in which nodes are moving without any fixed infrastructure or centralized administration. This paper investigates the impact of MAC protocols 802.11 and CSMA on two reactive routing protocols AODV and DSR in MANETs with varying network size. Number of simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput, End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA is suitable for AODV where as only 802.11 is suitable for DSR.

Research paper thumbnail of Cross Layer Design Approach to Enhance the Quality of Service in Mobile Ad Hoc Networks

Wireless Personal Communications, 2015

ABSTRACT The infrastructure-less and dynamic nature of mobile ad hoc networks demands a new set o... more ABSTRACT The infrastructure-less and dynamic nature of mobile ad hoc networks demands a new set of networking strategies to improve the performance of quality of service (QoS). Providing QoS is a major issue in Manets. The traditional layered approach does not fit well for ad hoc networks due to high mobility and dynamic topology. This paper implements the cross layer design approach on DYMO routing protocol in Manets by using Qualnet simulator in both traditional layered approach and proposed cross layer approach. The proposed methodology uses four QoS metrics: throughput, end-to-end delay, packet delivery ratio and jitter. The experimental result reveals that QoS performance is enhanced in CLD approach for DYMO. The throughput in traditional layered approach for DYMO is 1961 b/s, whereas in the CLD approach it is 2986 b/s. Finally this paper concludes that cross layer approach significantly improves the QoS performance when compared with layered approach.

Research paper thumbnail of Analyzing the impact of Transmission rate on the Performance of AODV and DSR Protocols in MANETs under Responsive and Non-responsive Traffic

The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utiliz... more The massive boom in the wireless technology has led to heavy utilization. Due to the heavy utilization and shared nature of resources causes QoS problems in ad hoc networks. Providing QoS is a severe problem in mobile ad hoc networks. The main focus of this paper is to analyze the performance of AODV and DSR routing protocols in MANETs under responsive and non-responsive traffic by varying the transmission rate. Apart from that, this paper also discusses the various issues related to congestion in ad hoc networks. Simulations are carried out using ns-2. The QoS parameters used in this paper are throughput, End-to-End delay and Packet Delivery Fraction. From the experimental results it is found that impact of transmission rate shows significant changes on the performance AODV and DSR. By increasing transmission rate throughput also increase but at a particular transmission rate, it is observed that there is a plunge in throughput; this point is call converging point to predict the congestion and asses the performance of the protocol. The authors found that performance of DSR is better in terms of throughput when compared to AODV under TCP traffic. There is no major impact of transmission rate on throughput for DSR under UDP traffic.
Keywords- AODV; DSR; QoS; MANET; TCP

Research paper thumbnail of Investigating the impact of Node Traversal Time on the Performance DYMO in MANETs

Mobile Ad hoc Network is an emerging area in the present mobile world. Its standards are defined ... more Mobile Ad hoc Network is an emerging area in the present
mobile world. Its standards are defined by IETF. MANETs
presents several desirable properties like dynamic topology,
Easy of deployment and robustness, are qualify them as an
attractive topic for the research community finding feasible
QoS routes is a challenging issue in MANETs. The choice of
the stable values in protocol configuration will affect
correctness of protocol. In Mobile ad hoc networks DYMO
protocol suggests that the Node Traversal Time (NTT)
should be a constant value, but does not refer to how this
value to be adjusted with network size. This paper
investigates the impact of NTT value on the performance of
DYMO routing protocol. Experimental results suggest that
impact of NTT shows significant progress on the
performance of DYMO. This paper demonstrates that in a
dynamic environment we are not supposed to use constant
values like NTT in protocol configuration and suggests that
the Node Traversal Time should be a suitable value with the
network size.
Keywords: MANET, IETF, NTT, DYMO, AODV

Research paper thumbnail of Performance Evaluation of DSR and LAR Routing Protocols with MAC Layer in MANET’s

In the past two decades, we have seen a rapid development in the area of mobile computing and com... more In the past two decades, we have seen a rapid development in the area of mobile computing and
communications due to the explosion of inexpensive, broadly available wireless devices. A mobile ad hoc
network is an independent collection of mobile devices that communicate with each other over wireless links
and cooperate in a distributed manner in order to provide the necessary network functionality in the absence
of a fixed infrastructure. Each device in a MANET is free to move independently in any direction, and will
therefore change its links to other devices frequently. In this paper we have done the performance evolution
of DSR and LAR routing protocols for MAC layer in MANETs with varying network size. Number of
simulation scenarios was carried out by using Glomosim-2.03 with the simulation metrics like Throughput,
End-to-End Delay and Packer Delivery Ratio. From simulation results we found that both 802.11 and CSMA
is suitable for DSR where as only 802.11 is suitable for LAR.

Research paper thumbnail of Analyzing the impact of Simulation Area on the Performance of

A Mobile Ad Hoc Network consists of mobile nodes which are move arbitrarily within the specified ... more A Mobile Ad Hoc Network consists of mobile nodes which are
move arbitrarily within the specified range. MANETs can be
easily organized without the aid of any infrastructure. Due to
the nature of shared resources performance of routing
protocols and congestion control is a critical issue in mobile
Ad hoc networks. In this paper we formulate different
simulations using NS2 for Ad hoc networks of different sizes.
This paper analyzed impact of Simulation area on the
performance of some commonly used routing protocols under
the radio propagation models Two-ray and shadowing. The
performance metrics used are Throughput, End-to-End Delay
and PDF (Packet Delivery Fraction). Simulation experiments
found that the impact of dimension filed of mobile nodes
shows significant changes on the performance AODV and
DSR.
Keywords: MANET, NS2, PDF, TWO-RAY, SHADOWING

Research paper thumbnail of Investigating the Impact of 802.11 and CSMA ON AODV

A Mobile Ad-Hoc Network (MANET) is a self-configuring infrastructure less network of mobile devic... more A Mobile Ad-Hoc Network (MANET) is a self-configuring
infrastructure less network of mobile devices connected by wireless
links. Each device in a MANET is free to move independently
in any direction, and change its links to other devices frequently.
Mobile means moving and Ad Hoc means temporary without
any fixed infrastructure, so mobile ad hoc networks are a kind
of temporary networks in which nodes are moving without any
fixed infrastructure or centralized administration. This paper
investigates the impact of MAC protocols 802.11 and CSMA
on two reactive routing protocols AODV and DSR in MANETs
with varying network size. Number of simulation scenarios was
carried out by using Glomosim-2.03 with the simulation metrics
like Throughput, End-to-End Delay and Packer Delivery Ratio.
From simulation results we found that both 802.11 and CSMA is
suitable for AODV where as only 802.11 is suitable for DSR.

Research paper thumbnail of Impact of MAC Layer on AODV and LAR Routing Protocols in MANETs

A Mobile Ad hoc Network is a type of ad hoc network. It can change its location configuration dyn... more A Mobile Ad hoc Network is a type of ad hoc network. It can change its location configuration dynamically. It is an infrastructure-less network. Due to the complex nature of MANETS, their development processes face several challenges. One of such key challenge is routing. Several routing protocols have already been proposed for MANETs. This paper examines the impact of MAC protocols 802.11 and CSMA on the two on demand routing protocols AODV and LAR in MANETs with varying Node density in the network. Number of simulation scenarios was carried out by using Glomosim-2.03. The simulation metrics used are Throughput, Delay and PDR. Simulation experiments found that both 802.11 and CSMA is suitable for AODV where as only 802.11 is suitable for LAR.

Research paper thumbnail of Congestion Control for Mobile Ad-hoc Networks