This document summarizes an article that proposes an adaptive broadcast mechanism to improve alert message dissemination in vehicular ad-hoc networks (VANETs). It aims to reduce the "broadcast storm problem" where redundant rebroadcasting of messages causes contention and packet collisions. The proposed Profile-driven Adaptive Warning message Dissemination System (PAWDS) algorithm dynamically adjusts broadcast parameters based on detected city roadmap profiles (simple, regular, complex layouts) and vehicle density to select the appropriate dissemination scheme (full, standard, reduced). Simulation results show PAWDS improves information dissemination accuracy and mitigates broadcast storm issues compared to traditional methods, though some nodes still repeatedly act as rebroadcasters.
Predictive Data Dissemination in VanetDhruvMarothi
The vehicle itself is an information source that produces a large amount of various information including actual vehicle and environment sensors. The implementation of an efficient and scalable model for information dissemination in VANETs possesses major issues. In this dynamic environment, an ever-growing number of context dissemination messages are leveling up the usage of the channel which affects the network performance. This presentation tries to analyze and assess the key ideas of how to overcome the context data dissemination and how to reduce the amounts of transferred and stored data in a vehicular cooperation environment. This is one of the most prominent topics of pervasive computing.
Towards a new approach of data dissemination in vanets networkscsandit
In the 2000s, ad hoc networks was developed and highly used in dynamic environment,
particularly for inter- vehicular communication (VANETs : Vehicular Ad hoc Networks).
Since that time, many researches and developments process was dedicated to VANET networks.
This was motivated by the current vehicular industry trend that is leading to a new transport
system generation based on the use of new communication technologies in order to provide
many services to passengers, the fact that improves the driving and travel’s experience.
These systems require traffic information sharing and dissemination the example as the case
alert message emitting allowing the driver to minimize driving risks. Sharing such information
between vehicles helps to anticipate potentially dangerous situations, as well as planning better
routes during congestion situations.
In this context, we are trying in this paper to model and simulate VANET Networks in order to
analyze and evaluate security information dissemination approaches and mechanisms used in
this type of networks in several exchanges conditions.This in order to identify their limitations
and suggest a new improved approach. This study was conducted as part of our research
project entitled “Simulation & VANETs”, where we justify and validate our approach using
modeling and simulation techniques and tools used in this domain.
Towards Improving Road Safety Using Advanced Vehicular NetworksTELKOMNIKA JOURNAL
Vehicular Ad-hoc Networks (VANETs) are advanced network technologies applied to improve safety on roads and to offer suitable solutions for Intelligent Transportation Systems (ITS). The goal of VANETs is to assistdrivers and to act as a smart co-pilot that can alret about accidents and help avoiding them while prodivding high-end infotainment systems for both the driver and passengers. Consequently, VANETs can save millions of lives around the world, especially in Saudi Arabia, which has a very high rate of road accidents annualy. In this paper, we introduce and discuss VANETs, related routing protocols, challenging problems, and the existing solutions. This work is a part of a bigger project that aims to enhance VANETs technologies and to updapteITS to significantly promote road safety in general and Saudi Arabia’s roads in particular.
Predictive Data Dissemination in VanetDhruvMarothi
The vehicle itself is an information source that produces a large amount of various information including actual vehicle and environment sensors. The implementation of an efficient and scalable model for information dissemination in VANETs possesses major issues. In this dynamic environment, an ever-growing number of context dissemination messages are leveling up the usage of the channel which affects the network performance. This presentation tries to analyze and assess the key ideas of how to overcome the context data dissemination and how to reduce the amounts of transferred and stored data in a vehicular cooperation environment. This is one of the most prominent topics of pervasive computing.
Towards a new approach of data dissemination in vanets networkscsandit
In the 2000s, ad hoc networks was developed and highly used in dynamic environment,
particularly for inter- vehicular communication (VANETs : Vehicular Ad hoc Networks).
Since that time, many researches and developments process was dedicated to VANET networks.
This was motivated by the current vehicular industry trend that is leading to a new transport
system generation based on the use of new communication technologies in order to provide
many services to passengers, the fact that improves the driving and travel’s experience.
These systems require traffic information sharing and dissemination the example as the case
alert message emitting allowing the driver to minimize driving risks. Sharing such information
between vehicles helps to anticipate potentially dangerous situations, as well as planning better
routes during congestion situations.
In this context, we are trying in this paper to model and simulate VANET Networks in order to
analyze and evaluate security information dissemination approaches and mechanisms used in
this type of networks in several exchanges conditions.This in order to identify their limitations
and suggest a new improved approach. This study was conducted as part of our research
project entitled “Simulation & VANETs”, where we justify and validate our approach using
modeling and simulation techniques and tools used in this domain.
Towards Improving Road Safety Using Advanced Vehicular NetworksTELKOMNIKA JOURNAL
Vehicular Ad-hoc Networks (VANETs) are advanced network technologies applied to improve safety on roads and to offer suitable solutions for Intelligent Transportation Systems (ITS). The goal of VANETs is to assistdrivers and to act as a smart co-pilot that can alret about accidents and help avoiding them while prodivding high-end infotainment systems for both the driver and passengers. Consequently, VANETs can save millions of lives around the world, especially in Saudi Arabia, which has a very high rate of road accidents annualy. In this paper, we introduce and discuss VANETs, related routing protocols, challenging problems, and the existing solutions. This work is a part of a bigger project that aims to enhance VANETs technologies and to updapteITS to significantly promote road safety in general and Saudi Arabia’s roads in particular.
Deterministic AODV Routing Protocol for Vehicular Ad-Hoc Networkpaperpublications3
Abstract: Vehicular ad hoc networks (VANETs) can provide scalable and cost-effective solutions for applications such as traffic safety, dynamic route planning, and context-aware advertisement using short-range wireless communication. To function properly, these applications require efficient routing protocols. However, existing mobile ad hoc network routing and forwarding approaches have limited performance in VANETs. This dissertation shows that routing protocols which account for VANET-specific characteristics in their designs, such as position and mobility of Vehicle, can provide good performance for a large spectrum of applications.
Increased vehicular traffic demands smart vehicles which can interact with each other and roadside infrastructure to prevent accidents. Vehicular Ad-hoc Network (VANET) provides this flexibility to the vehicles. In this desertion we initially analyze the performance of AODV and OLSR, and further we improve the performance of AODV by selecting the node on the basis of trust value of the successive nodes, we also reduce the neighbor hood expiry time and correspondingly update the route table of AODV, with this purposed approach we would be able to reduce the end-to-end delay of AODV sufficiently also the performance of AODV increase in terms of Throughput and packet delivery ratio.Keywords: VANET, AODV, ROUTING, ROUT TABLE.
Title: Deterministic AODV Routing Protocol for Vehicular Ad-Hoc Network
Author: Dalbir Singh, Amit Jain (Asst. Prof.)
ISSN 2350-1022
International Journal of Recent Research in Mathematics Computer Science and Information Technology
Paper Publications
GLOBAL FRONTRUNNER ROUTING ALGORITHM (GFRA) FOR V2V COMMUNICATION IN VANETS cscpconf
VANET (Vehicular Ad hoc NETwork) is the emerging research area that making the phrase
“Network on Wheel” true. In this new age network the basic WLAN (IEEE 802.11) standard is
used. As the necessity of such network increases the implementation challenges are being taken
into account. They are broadcasting, routing, priority scheduling and security and privacy. In
this paper the routing is considered as the research factor. A proposal for routing with
frequently changing topology to avoid disconnection of network on road and for the routing
among overlapping networks in flyovers with multiple ramps and stack to avoid wrong
messaging is given.
Abstract: VANET (vehicular ad-hoc network) is a classification of MANET in which vehicles act as mobile node and provides a different approach to Intelligent transport System (ITS). VANET is an emerging area for Intelligent Transportation System (ITS) which can result in increased traffic safety, collision warning through exchange of messages through wireless media. Efficient routing protocols are required for efficient communication among vehicles. In the given paper, we surveyed various VANETs protocols like GPRS, GPRS-MV & GPSR. We compare our proposed protocols via NS-2 based simulations and show the performance of different protocols.
A GRID VEHICULAR NODE LOCALIZATION SYSTEM VANET WITH LINER ERROR PROPAGATIONRK CONSULTANCY SERVICES
VANET navigators have been popularly adopts by using drivers. However, due to these sensibilities of GPS signals to terrains, vehicles cannot to get their locations, when they are anyone inside a tunnel or a road it’s surrounded by high rises, where satellite signal is ended. This mainly used for safety and convenience problems. But the VANETS advance into their critical areas and to become more dependent on these localization systems. GPS is starting to locate some uncertain problems, such not always being the available or not being robust enough for this some different applications. For the reason, a number of other localizations techniques such as Cellular Localization, Dead Reckoning, and Image Video Localization have been used in VANETs to overcome the GPS limitations. To address this issues, to proposes a novel Grid based On road localization system (GOT), where these vehicles with and without accurate of GPS signals self organizes into a Vehicular Ad Hoc Network (VANET), exchange the locations and distance information and helps to each others to calculate an accurate position for all these vehicles inside the network. The location information’s can be exchanged among vehicles one or multiple hops away in this paper.
Real time path planning based on hybrid vanet enhanced transportation systemIISTech2015
Real time path planning based on hybrid vanet enhanced transportation system || 2015-2016 IEEE NS2 Projects Training
Contact: IIS TECHNOLOGIES
ph:9952077540,landline:044 42637391
mail:info@iistechnologies.in
Traffic Congestion Prediction using Deep Reinforcement Learning in Vehicular ...IJCNCJournal
In recent years, a new wireless network called vehicular ad-hoc network (VANET), has become a popular research topic. VANET allows communication among vehicles and with roadside units by providing information to each other, such as vehicle velocity, location and direction. In general, when many vehicles likely to use the common route to proceed to the same destination, it can lead to a congested route that should be avoided. It may be better if vehicles are able to predict accurately the traffic congestion and then avoid it. Therefore, in this work, the deep reinforcement learning in VANET to enhance the ability to predict traffic congestion on the roads is proposed. Furthermore, different types of neural networks namely Convolutional Neural Network (CNN), Multilayer Perceptron (MLP) and Long Short-Term Memory (LSTM) are investigated and compared in this deep reinforcement learning model to discover the most effective one. Our proposed method is tested by simulation. The traffic scenarios are created using traffic simulator called Simulation of Urban Mobility (SUMO) before integrating with deep reinforcement learning model. The simulation procedures, as well as the programming used, are described in detail. The performance of our proposed method is evaluated using two metrics; the average travelling time delay and average waiting time delay of vehicles. According to the simulation results, the average travelling time delay and average waiting time delay are gradually improved over the multiple runs, since our proposed method receives feedback from the environment. In addition, the results without and with three different deep learning algorithms, i.e., CNN, MLP and LSTM are compared. It is obvious that the deep reinforcement learning model works effectively when traffic density is neither too high nor too low. In addition, it can be concluded that the effective algorithms for traffic congestion prediction models in descending order are MLP, CNN, and LSTM, respectively.
EFFICIENT BROADCASTING MECHANISMS FOR DATA DISSEMINATION IN VEHICULAR AD HOC ...ijmnct
Broadcasting is the process of sending a message from one node to all other nodes in an ad hoc network. It
is a fundamental operation for communication in ad hoc networks as it allows for the update of network
information, route discovery and other operations as well. In this paper, we review the pros and cons of
different broadcasting methods in VANET. Also, the broadcast storm problem and broadcast suppression
techniques for broadcasting in Vehicular Ad hoc Networks (VANET) are discussed, because blindly
broadcasting the packets cause several problems that affect the quality of service in VANET. In order to
avoid broadcast storm problem this paper provides a survey of some of the existing broadcast suppression
techniques in vehicular environment
Traffic Control System by Incorporating Message Forwarding ApproachCSCJournals
During the last few years, continuous progresses in wireless communications have opened new research fields in computer networking, aimed at extending data networks connectivity to environments where wired solutions are impracticable. Among these, vehicular traffic is attracting a growing attention from both academia and industry, due to the amount and importance of related distributive applications to mobile entertainment. VANETs are self-organized networks built up from moving vehicles, and are part of the broader class of MANETs. Because of these peculiar characteristics, VANETs require new networking techniques, whose feasibility and performance are usually tested by means of simulation. In order to meet performance goals, it is widely agreed that VANETs must rely heavily on node-to-node communication. In VANET, each vehicle acts as a node and communicates with other vehicles within the range or communicates with base stations. The main idea is to deploy a wireless communication network that has a capability of sending and receiving messages between transmitter and mobile devices in the particular network. Results can be shown using an effective VEINS Simulator. This Simulator can produce detailed vehicular movement traces and can simulate different traffic conditions through fully customizable scenarios. The Framework is expected to be employed using such simulator that makes use of traffic modulator, network simulator and coupling module that integrates the traffic and network.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online
International Journal of Computational Engineering Research (IJCER) ijceronline
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Deterministic AODV Routing Protocol for Vehicular Ad-Hoc Networkpaperpublications3
Abstract: Vehicular ad hoc networks (VANETs) can provide scalable and cost-effective solutions for applications such as traffic safety, dynamic route planning, and context-aware advertisement using short-range wireless communication. To function properly, these applications require efficient routing protocols. However, existing mobile ad hoc network routing and forwarding approaches have limited performance in VANETs. This dissertation shows that routing protocols which account for VANET-specific characteristics in their designs, such as position and mobility of Vehicle, can provide good performance for a large spectrum of applications.
Increased vehicular traffic demands smart vehicles which can interact with each other and roadside infrastructure to prevent accidents. Vehicular Ad-hoc Network (VANET) provides this flexibility to the vehicles. In this desertion we initially analyze the performance of AODV and OLSR, and further we improve the performance of AODV by selecting the node on the basis of trust value of the successive nodes, we also reduce the neighbor hood expiry time and correspondingly update the route table of AODV, with this purposed approach we would be able to reduce the end-to-end delay of AODV sufficiently also the performance of AODV increase in terms of Throughput and packet delivery ratio.Keywords: VANET, AODV, ROUTING, ROUT TABLE.
Title: Deterministic AODV Routing Protocol for Vehicular Ad-Hoc Network
Author: Dalbir Singh, Amit Jain (Asst. Prof.)
ISSN 2350-1022
International Journal of Recent Research in Mathematics Computer Science and Information Technology
Paper Publications
GLOBAL FRONTRUNNER ROUTING ALGORITHM (GFRA) FOR V2V COMMUNICATION IN VANETS cscpconf
VANET (Vehicular Ad hoc NETwork) is the emerging research area that making the phrase
“Network on Wheel” true. In this new age network the basic WLAN (IEEE 802.11) standard is
used. As the necessity of such network increases the implementation challenges are being taken
into account. They are broadcasting, routing, priority scheduling and security and privacy. In
this paper the routing is considered as the research factor. A proposal for routing with
frequently changing topology to avoid disconnection of network on road and for the routing
among overlapping networks in flyovers with multiple ramps and stack to avoid wrong
messaging is given.
Abstract: VANET (vehicular ad-hoc network) is a classification of MANET in which vehicles act as mobile node and provides a different approach to Intelligent transport System (ITS). VANET is an emerging area for Intelligent Transportation System (ITS) which can result in increased traffic safety, collision warning through exchange of messages through wireless media. Efficient routing protocols are required for efficient communication among vehicles. In the given paper, we surveyed various VANETs protocols like GPRS, GPRS-MV & GPSR. We compare our proposed protocols via NS-2 based simulations and show the performance of different protocols.
A GRID VEHICULAR NODE LOCALIZATION SYSTEM VANET WITH LINER ERROR PROPAGATIONRK CONSULTANCY SERVICES
VANET navigators have been popularly adopts by using drivers. However, due to these sensibilities of GPS signals to terrains, vehicles cannot to get their locations, when they are anyone inside a tunnel or a road it’s surrounded by high rises, where satellite signal is ended. This mainly used for safety and convenience problems. But the VANETS advance into their critical areas and to become more dependent on these localization systems. GPS is starting to locate some uncertain problems, such not always being the available or not being robust enough for this some different applications. For the reason, a number of other localizations techniques such as Cellular Localization, Dead Reckoning, and Image Video Localization have been used in VANETs to overcome the GPS limitations. To address this issues, to proposes a novel Grid based On road localization system (GOT), where these vehicles with and without accurate of GPS signals self organizes into a Vehicular Ad Hoc Network (VANET), exchange the locations and distance information and helps to each others to calculate an accurate position for all these vehicles inside the network. The location information’s can be exchanged among vehicles one or multiple hops away in this paper.
Real time path planning based on hybrid vanet enhanced transportation systemIISTech2015
Real time path planning based on hybrid vanet enhanced transportation system || 2015-2016 IEEE NS2 Projects Training
Contact: IIS TECHNOLOGIES
ph:9952077540,landline:044 42637391
mail:info@iistechnologies.in
Traffic Congestion Prediction using Deep Reinforcement Learning in Vehicular ...IJCNCJournal
In recent years, a new wireless network called vehicular ad-hoc network (VANET), has become a popular research topic. VANET allows communication among vehicles and with roadside units by providing information to each other, such as vehicle velocity, location and direction. In general, when many vehicles likely to use the common route to proceed to the same destination, it can lead to a congested route that should be avoided. It may be better if vehicles are able to predict accurately the traffic congestion and then avoid it. Therefore, in this work, the deep reinforcement learning in VANET to enhance the ability to predict traffic congestion on the roads is proposed. Furthermore, different types of neural networks namely Convolutional Neural Network (CNN), Multilayer Perceptron (MLP) and Long Short-Term Memory (LSTM) are investigated and compared in this deep reinforcement learning model to discover the most effective one. Our proposed method is tested by simulation. The traffic scenarios are created using traffic simulator called Simulation of Urban Mobility (SUMO) before integrating with deep reinforcement learning model. The simulation procedures, as well as the programming used, are described in detail. The performance of our proposed method is evaluated using two metrics; the average travelling time delay and average waiting time delay of vehicles. According to the simulation results, the average travelling time delay and average waiting time delay are gradually improved over the multiple runs, since our proposed method receives feedback from the environment. In addition, the results without and with three different deep learning algorithms, i.e., CNN, MLP and LSTM are compared. It is obvious that the deep reinforcement learning model works effectively when traffic density is neither too high nor too low. In addition, it can be concluded that the effective algorithms for traffic congestion prediction models in descending order are MLP, CNN, and LSTM, respectively.
EFFICIENT BROADCASTING MECHANISMS FOR DATA DISSEMINATION IN VEHICULAR AD HOC ...ijmnct
Broadcasting is the process of sending a message from one node to all other nodes in an ad hoc network. It
is a fundamental operation for communication in ad hoc networks as it allows for the update of network
information, route discovery and other operations as well. In this paper, we review the pros and cons of
different broadcasting methods in VANET. Also, the broadcast storm problem and broadcast suppression
techniques for broadcasting in Vehicular Ad hoc Networks (VANET) are discussed, because blindly
broadcasting the packets cause several problems that affect the quality of service in VANET. In order to
avoid broadcast storm problem this paper provides a survey of some of the existing broadcast suppression
techniques in vehicular environment
Traffic Control System by Incorporating Message Forwarding ApproachCSCJournals
During the last few years, continuous progresses in wireless communications have opened new research fields in computer networking, aimed at extending data networks connectivity to environments where wired solutions are impracticable. Among these, vehicular traffic is attracting a growing attention from both academia and industry, due to the amount and importance of related distributive applications to mobile entertainment. VANETs are self-organized networks built up from moving vehicles, and are part of the broader class of MANETs. Because of these peculiar characteristics, VANETs require new networking techniques, whose feasibility and performance are usually tested by means of simulation. In order to meet performance goals, it is widely agreed that VANETs must rely heavily on node-to-node communication. In VANET, each vehicle acts as a node and communicates with other vehicles within the range or communicates with base stations. The main idea is to deploy a wireless communication network that has a capability of sending and receiving messages between transmitter and mobile devices in the particular network. Results can be shown using an effective VEINS Simulator. This Simulator can produce detailed vehicular movement traces and can simulate different traffic conditions through fully customizable scenarios. The Framework is expected to be employed using such simulator that makes use of traffic modulator, network simulator and coupling module that integrates the traffic and network.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online
International Journal of Computational Engineering Research (IJCER) ijceronline
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design Approach for Vehicle To Vehicle (V2V) Dissemination of Messages in Veh...IJERA Editor
Designing a protocol structure which contains the control system, VANET device and the type of communication message structures which will implement the message packets for v2v or v2I infrastructure . The different message packets contain the information required to transfer from one node to another in vehicular network for communication. Design various algorithm required for Control, Alert and Infotainment messages. Time stamping lowering data rate efficient packet delivery and proper communication of required messages. Implementation of proposed algorithms and comparison of them with existing algorithms and study of different factors affecting the working of theses algorithms. Analysis of proposed design approach and improvements in results if required.
SIMULATION & VANET: TOWARDS A NEW RELIABLE AND OPTIMAL DATA DISSEMINATION MODELpijans
Ad hoc networks was developed in the 2000s, they was highly used in dynamic environment, particularly
for inter- vehicular communication (VANETs : Vehicular Ad hoc Networks).
Since that time, many researches and developments process was dedicated to VANET networks. These were
motivated by the current vehicular industry trend that is leading to a new transport system generation
based on the use of new communication technologies in order to provide many services to passengers, the
fact that improves the driving and travel’s experience.
These systems require traffic information sharing and dissemination, such as the alert message emitting,
that be exchanged for drivers protection on the road. Sharing such information between vehicles helps to
anticipate potentially dangerous situations, as well as planning better routes during congestion situations.
The current paper attempts to model and simulate VANET Networks, aiming to analyze and evaluate
security information dissemination approaches and mechanisms used in this type of networks in several
exchanges conditions. The second objective is to identify their limitations and suggest a new improved
approach. This study was conducted as part of our research project entitled “Simulation & VANETs”,
where we justify and validate our approach using modeling and simulation techniques and tools used in
this domain.
Definitive broadcasting in vehicular ad hoc networks is the key to success for various services and applications on an intelligent transportation system. Many trusted broadcasting protocols have been proposed but none of them has been evaluated in realistic scenario. In this paper, we discuss these reliable broadcasting protocols on VANET. Basic mechanism in broadcasting, and also we are providing collective research of Broadcasting protocols in vanet in that some real time protocols with their pros cons we have studied.
Definitive broadcasting in vehicular ad hoc networks is the key to success for various services and applications on an intelligent transportation system. Many trusted broadcasting protocols have been proposed but none of them has been evaluated in realistic scenario. In this paper, we discuss these reliable broadcasting protocols on VANET. Basic mechanism in broadcasting, and also we are providing collective research of Broadcasting protocols in vanet in that some real time protocols with their pros cons we have studied.
TOWARDS A NEW APPROACH OF DATA DISSEMINATION IN VANETS NETWORKScscpconf
In the 2000s, ad hoc networks was developed and highly used in dynamic environment, particularly for inter- vehicular communication (VANETs : Vehicular Ad hoc Networks). Since that time, many researches and developments process was dedicated to VANET networks. This was motivated by the current vehicular industry trend that is leading to a new transport system generation based on the use of new communication technologies in order to provide many services to passengers, the fact that improves the driving and travel’s experience. These systems require traffic information sharing and dissemination the example as the case alert message emitting allowing the driver to minimize driving risks. Sharing such information between vehicles helps to anticipate potentially dangerous situations, as well as planning better routes during congestion situations. In this context, we are trying in this paper to model and simulate VANET Networks in order to analyze and evaluate security information dissemination approaches and mechanisms used in this type of networks in several exchanges conditions.This in order to identify their limitations and suggest a new improved approach. This study was conducted as part of our research project entitled “Simulation & VANETs”, where we justify and validate our approach using modeling and simulation techniques and tools used in this domain.
Technical Review on Different Applications, Challenges and Security in VANETPallavi Agarwal
Vehicular ad-hoc networks (VANETs) technology has turned out as a vital research field throughout the most recent couple of years. VANETs are the likely an impacting way to deal with giving security of driver and different applications for the activity conditions and additionally travelers. Being dynamic in nature, it created the network, according to the condition and requirement of the users and provides consistent communication between the vehicles. Due to its excessive advantages, it is highly susceptible to numerous attacks and security in VANET should be taken into consideration. This paper presented the security issues such as authenticity, integrity, availability, confidentiality, anonymity and non-repudiation to provide the secure communication between Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I). Numerous research works have been done to recover the performance and security of this network. The fundamental point of this paper is the several security challenges and the applications of VANETs.
ANET: Technical and Future Challenges with a Real Time Vehicular Traffic Simu...IJERA Editor
VANET or Vehicular Ad-Hoc Network is a special type of MANET or Mobile Ad-Hoc Network that is
designed specifically for communications between vehicles or V2V and vehicles to infrastructure or V2I. There
is a lot of studies and research that has been dedicated to study this technology due to its importance and
necessity in our life. The fact that each and every module presented must be tested thoroughly before putting it
into action, as there will be severe consequences in case of a system malfunction especially if it's a vehicular
design problem. However, seeing VANETS coming into reality becomes very close with the advancement of
IEEE 802.11p standard that is being dedicated to the DSRC or dedicated short range communication [1]. This
paper will discuss this technology emphasizing some of its applications, current limitations and future challenges
plus simulating a real traffic using SUMO and OpenStreetMap
A Broadcasting Scheme for Message Dissemination in VANETIJERA Editor
Vehicular Ad hoc Networks [VANET] is one of the fastest emerging technologies for research as there are many issues and challenges to be addressed by the researchers before the technology becomes commercialized. Vehicular communication systems developed largely by the growing interest in intelligent transportation systems [ITS]. Cooperative driving can improve safety and efficiency by enabling vehicles to exchange emergency messages to each other in the neighborhood and to assist driver in making proper decision to avoid vehicle collisions and congestion. Broadcast transmission is usually used for disseminating safety related information among vehicles. Message Broadcast over wireless networks poses many challenges due to link unreliability, hidden terminal, message redundancy, and broadcast storm, etc., which greatly degrade the network performance. In most of the emergency situations, there is less time to make a handshake with other nodes in the networks, as the emergency message is to be delivered fast and efficient. Broadcasting information is usually very costly and without limiting techniques this will result in serious data redundancy, contention and collisions. This work focuses on Broadcasting Scheme for Message Dissemination.
Effective Road Model for Congestion Control in VANETSijwmn
Congestion on the roads is a key problem to deal with, which wastes valuable time.. Due to high mobility
rate and relative speed link failure occur very often. VANET is used to tackle the problem of congestion,
and make decisions well in advance to avoid traffic congestion. In this paper we proposed a solution to
detect and control the traffic congestion by using of both (V2V) and (V2I), as a result the drivers become
aware of the location of congestion as well as way to avoid getting stuck in congestion. The congestion is
detected by analyzing the data obtained by vehicular communication and road side units to avoid the
traffic. Our proposition system is competent of detecting and controlling traffic congestion in real-time.
V2V and V2I communication network is used to receive and send the messages. We simulate the result by
using Congestion Detection and Control Algorithm (CDCA), and show that this is one effective way to
control congestion. The Proposed methodology ensures reliable and timely delivery of messages to know
about congestion and avoid it.
VANET Clustering for Protected and Steady Network
Mukesh Bathre1, Alok Sahelay2
Abstract— Vehicular on demand ad-hoc network (VANET) is understood as a necessary issue of good Transportation systems. The key advantage of VANET communication is looked in dynamic protection systems, that objective to improve security of travelers by exchanging caution messages between vehicles. Alternative applications and private services also are allowed so as to lower management expenses and to market VANET exploitation. To effectively established VANET, security is one amongst key challenges that has got to be tackled. Another vital concern is measurability could be a serious issue for a network designer a way to maintain stable communication and services in VANET. Extraordinarily dynamic atmosphere of VANETs looks it troublesome. This paper introduced an automatic reliability management method for VANETs that uses machine learning to categories nodes as malicious. Cluster creation is one effective method for the measurability drawback. Here conjointly given associate entropy-based WCA (EWCA) cluster maintained method which may handle the steady of the automobile network.
VEHICULAR AD HOC AND SENSOR NETWORKS; PRINCIPLES AND CHALLENGES ijasuc
The rapid increase of vehicular traffic and congestion on the highways began hampering the safe and
efficient movement of traffic. Consequently, year by year, we see the ascending rate of car accidents and
casualties in most of the countries. Therefore, exploiting the new technologies, e.g. wireless sensor networks,
is required as a solution of reduction of these saddening and reprehensible statistics. This has motivated us to
propose a novel and comprehensive system to utilize Wireless Sensor Networks for vehicular networks. We
coin the vehicular network employing wireless Sensor networks as Vehicular Ad Hoc and Sensor Network, or
VASNET in short. The proposed VASNET is particularly for highway traffic .VASNET is a self-organizing Ad
Hoc and sensor network comprised of a large number of sensor nodes. In VASNET there are two kinds of
sensor nodes, some are embedded on the vehicles-vehicular nodes- and others are deployed in predetermined
distances besides the highway road, known as Road Side Sensor nodes (RSS). The vehicular nodes are used to
sense the velocity of the vehicle for instance. We can have some Base Stations (BS) such as Police Traffic
Station, Firefighting Group and Rescue Team. The base stations may be stationary or mobile. VASNET
provides capability of wireless communication between vehicular nodes and stationary nodes, to increase
safety and comfort for vehicles on the highway roads. In this paper we explain main fundamentals and
challenges of VASNET.
Effect of hudhud cyclone on the development of visakhapatnam as smart and gre...
An adaptive broadcast mechanism to improve alert
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AN ADAPTIVE BROADCAST MECHANISM TO IMPROVE ALERT
MESSAGE DISSEMINATION IN VANETS
Nidhin A S1
, Vinaya K2
1
PG Scholar, Computer Science & Engineering Department, KCG College of Technology, Chennai, India
2
PG Scholar, Computer Science & Engineering Department, KCG College of Technology, Chennai, India
Abstract
VANET is a rapidly emerging research field and is essential for cooperative driving on the road. VANET technology uses moving car
as nodes in a network to create a mobile network. The number of vehicles has been increased on road in the past few years. Due to
high density of vehicles, road accident and the potential threats on the road is increasing. VANET is aiming to equip technology in
vehicles to reduce these factors by disseminating messages to each other. Warning messages have to be quickly disseminated in order
to reach maximum number of vehicles on road. Adapting to the environment where the vehicle is moving is essential to improve the
warning message dissemination when an abnormal situation occurs on the road. The notification to the nearby vehicle is done by
simply broadcasting the messages which is retransmitted over and again by the vehicles simultaneously to other nearby vehicles. Due
to this retransmission of warning message it leads to problem namely broadcast storm problem. This work proposed an adaptive
broadcast message forwarding process to improve the warning message dissemination in real urban scenarios and predict the
reduction in severity of broadcast storm problem. The efficiency of the alert dissemination can be increased if the vehicles determine
the city profile of their current area.
Keywords— Adaptive mechanism, alert dissemination, broadcast storm problem, roadmap scenarios, Mobility Models,
VANET.
----------------------------------------------------------------------***--------------------------------------------------------------------
1. INTRODUCTION
Vehicular Ad hoc Networks (VANETs) are a special case of
Mobile Ad Hoc Networks (MANETs) wherein the nodes are
modeled as vehicles. These nodes are capable of
communicating with each other on an adhoc basis, without a
fixed Infrastructure. VANET considers each participating
node as a router thus enabling the nodes to connect to each
other and transfer the data, thus creating a network. VANET is
a subclass of Intelligent Transportation System (ITS) in order
to provide safety and comfort to the road users. The major
applications of VANET includes safe driving, co-operative
driving, traffic optimization. Since vehicle is moving on the
road, vehicles make connection with another vehicle that may
never met before. This connection lasts for only few seconds
since the vehicle is moving in its own direction, and never
meets again in the network. These connections will be lost as
each car has a high mobility and may be travel in opposite
direction. Mobility pattern of vehicles depends on traffic
environment, road structure, speed of vehicles, driver’s
behavior and so on. Currently vehicles have become the main
transportation tools, and VANETs has become a hot research
topic for more and more researchers begin to realize the
potential perspective of the vehicle network. This work mainly
focusing about the data dissemination in VANETs and try to
propose a message dissemination algorithm for the
applications which are emerging for VANETs
Adapting to the environment where the vehicle is moving is
essential to improve the warning message dissemination and
to reduce the broadcast storm problem. This work mainly
focus on traffic safety and efficient warning message
dissemination, where main goal is to increase the accuracy of
the information received by the nearby vehicles when a
abnormal situation occurs. Existing techniques for VANET
usually considers vehicles in the road such as their density,
speed and position. Most of the works related to VANET in
the literature mainly focus on end-to-end routing in highway
scenarios. These techniques are not suitable to warn highest
number of vehicles when an abnormal situation occurs in
realistic vehicular traffic environment. In the past, a lot of
techniques have been proposed to enhance the warning
message dissemination but none of them is tested in real urban
scenarios. New proposal for warning message dissemination
in real urban scenario is needed which should consider both
the number of vehicles in the environment and the road
topology information.
This work proposed traffic safety and efficient message
dissemination for reducing the latency and to increase the
accuracy of the warning message dissemination received by
nearby vehicles when a dangerous situation occurs Manuel
[3]. An algorithm called PAWDS, Profile-driven adaptive
Warning message Dissemination System is proposed which
dynamically modifies some of the key parameters of the alert
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dissemination process to enhance the efficiency of the warning
message dissemination and reducing the broadcast storm
problem by considering city profile. In VANET, any vehicle
detecting an abnormal situation should notify the anomaly to
nearby vehicles that could face this problem in a short period
of time. Hence a simple broadcasting increases the number of
messages in the network over time. Simultaneous forwarding
of messages without any condition will cause message
redundancy, contention and massive packet collisions [8].
Such a situation must be avoided or reduced.
The rest of the paper is organized as follows. Section II
presents several broadcast storm reduction techniques and
adaptive forwarding mechanisms related to the work. Section
III justifies the necessity of city profile information and their
classification. Section IV describes the implementation of
algorithm and checks the effects of broadcast storm problem.
In Section V presents and analyze the obtained results. Finally,
Section VII concludes the paper.
2. BACKGROUND AND RELATED WORK
In the networking literature, there are several works that
proposed either broadcast storm reduction techniques or
adaptive mechanisms to enhance message dissemination. The
following section deals with most representative work related
to proposed work.
2.1 Broadcast Storm Mitigation Techniques
There are various techniques by which a message could be
disseminated over the network. In the networking literature,
there are several works that proposed to reduce the broadcast
storm problem and adaptive mechanism to enhance the
efficiency of the alert dissemination. The following literature
review deals with the literature works related to this project.
The Counter-based scheme [8] uses a threshold C and a
counter c to keep track of the number of times the broadcast
message is received. Whenever c ≥ C, message rebroadcast is
inhibited. The Distance-based scheme [8] use the relative
distance d between vehicles to decide whether to rebroadcast
or not. When the distance d between two vehicles is short and
the additional coverage (AC) of the node is lower,
rebroadcasting the warning message is inhibited. If d is larger,
the additional coverage will also be larger. The Location-
based scheme [8] requiring more accurate locations for the
broadcasting vehicles need an accurate geometrical estimation
(with convex polygons) of the AC of a warning message.
Since vehicles usually have GPS systems on-board, it is
possible to estimate the additional coverage more accurately.
The other rebroadcast schemes for VANET is slotted 1-
persistence, slotted p-persistence and weighted p-persistence
[9]. These three probabilistic and timer-based broadcast
suppression techniques are not designed to solve the broadcast
storm problem, but they can reduce the severity of the
broadcast storm by allowing only nodes with higher priority to
access the channel as fast as possible. These schemes are
specifically designed for use in highway scenarios.
The Last One (TLO) scheme [6] technique reduce the
broadcast storm problem by finding the most distant vehicle
from the warning message sender node, this vehicle will be the
only allowed node to retransmit the message in network. This
method uses GPS information from the sender vehicle and the
possible receivers to calculate the distance. GPS information
must be accurate to achieve good results, and it is not correctly
specified how a node knows the position of its nearby vehicles
at any given time.
Enhanced Street Broadcast Reduction (eSBR) scheme [6]
uses two types of message for communication between the
vehicles namely, warning message, informing about an
emergency situation and beacon message, informing about the
position, speed etc. of the vehicle. The message is
rebroadcasted after a fixed time interval if the distance
between the sender and receiver is greater than the initialized
rebroadcast distance. The message ID is stored in the vehicle
database, if the same message is received again, by comparing
it with already existent ID the message is discarded and is not
forwarded again by the vehicle.
The Cross Layer Broadcast Protocol (CLBP) [1] uses
geographical locations and velocities of vehicles to select the
forwarding vehicles efficiently. This scheme uses Broadcast
Request To Send (BRTS) and Broadcast Clear To Send
(BCTS) frames exchanging for reliable transmissions. This
scheme focus on single-direction environment like highway
scenarios and its performance has not been tested in urban
scenarios.
2.2 Adaptive Scheme for Message Dissemination
In VANET research works are less for message dissemination.
Backfire Algorithm [4] proposed for improving the message
dissemination. Vehicles calculates the density of neighbor
vehicles to decide whether to forward or not. An opportunistic
auto adaptive dissemination scheme proposed [2] - Adaptive
Copy and Spread (ACS) Algorithm - for VANETs, this
technique dynamically adjusts the dissemination strategies
based on the moving patterns of vehicles such as direction
and velocity,. This proposed scheme automatically increases
or decreases the number of message replicas inside the
broadcast area, and vehicles can decide when to start or stop
broadcast a message. Adaptive spread and copy is designed to
keep the message at the effective area's boundary for
informing this situation when the vehicle entering as soon as
possible.
In summary, VANET have many protocols but most of them
are available for one direction scenarios or end-to-end routing.
Some protocols are designed for the highway scenarios such
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as only one direction of prorogation is considered. Achieving
efficient warning message broadcast is of utmost importance
in vehicular networks to warn other vehicle of real time traffic
information. To overcome these drawbacks, this work mainly
focus on improving the efficiency of the warning message
broadcast while reducing the number of messages in the
vehicular communication network and improve the accuracy
of information received by nearby vehicles.
3. IMPACT OF ROADMAP TOPOLOGY
One of the most important issues in the protocol design of
VANET is absence of existing mobility model for imitating
the realistic behavior of vehicular traffic [5]. Roadmap has an
important influence in the message dissemination since
topology constrains car movement. In order to reduce the
broadcast storm problem messages are transmitted based on
the road topology. Road topology is classified into three
according to the number of streets and junctions in the city.
They are Simple layout (low density of streets and junctions),
Regular layout (medium density of streets and junctions) and
Complex layout (high density of streets and junctions). There
are three message dissemination schemes are used based on
the city profile information. They are Full dissemination,
Standard dissemination and Reduced dissemination.
Full dissemination: When the vehicles move in a low density
area then vehicles can send as many message as possible since
the vehicles in the city are less.
Standard dissemination: Density of vehicles in the city is
medium vehicle should maintain balance between number of
messages send and number of messages received.
Reduced dissemination: Vehicles send as few messages as
possible because the vehicles move in a high density area.
4. IMPLEMENTATION OF ALGORITHM
Each vehicle is equipped with GPS and city profile is
identified by using onboard GPS system. There are two types
of messages namely, warning messages and beacon messages.
Warning messages are used to inform other vehicles about the
abnormal conditions on the road and beacon messages are
exchanged among the vehicle to inform about their speed,
position etc of the vehicles. Vehicle density is calculated by
exchanging the beacon signal among the nearby vehicles. City
profile identification and the density of vehicles on the road is
the basis for the algorithm implementation. The algorithm
efficiently selects the most suitable message dissemination
depending on the profile of the street map and the estimated
vehicle density.
The following Table 1 shows the parameters used in each
working modes in the algorithm and T is the time taken to
reconfigure the system. The effectiveness of the alert
dissemination can be increased if the vehicles determine their
city profile of their current area and adapting to the
environment by selecting the appropriate dissemination
scheme accordingly. Table specifies different broadcast
schemes used in different working modes and interval
between the message broadcast in each dissemination scheme
.Most of the previous algorithm for VANET using a
predefined set of values. In this work the existing algorithm
automatically tune the parameters to enhance the warning
message and select the efficient mode of operation for sending
the message based on the city profile information and the
estimated density of vehicle on the road. Adapting to the
environment where the vehicle located is taken into account
for the message dissemination.
Table 1 Working Modes and Key Parameters
Working mode Interval
between
consecutive
messages
Broadcast
scheme
Min.
rebroadcast
distance
Full
dissemination
2 seconds Counter
based
--
Standard
dissemination
4 seconds eSBR 200m
Reduced
dissemination
5 seconds Distance
based
250m
The working and pseudo-code for the algorithm as shown
below
Algorithm 1: pseudo-code
Use standard dissemination scheme
While (1) do
obtain street map using GPS
Estimate the vehicle density using beacon message
if (city-profile is simple) then
if(vehicle density>25/km2
) then
use reduced dissemination scheme
else
use standard dissemination mode
else-if (city-profile is regular) then
if(vehicle density>50/km2
) then
use standard dissemination scheme
else
use full dissemination scheme
else-if (city-profile is complex) then
if(vehicle density>75/km2
) then
use standard dissemination scheme
else
use full dissemination scheme
sleep(T);
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5. SIMULATION AND PERFORMANCE
EVALUATION
Simulation result presented in this paper is done using Matlab
2010a. Since deploying and testing of VANET protocol is
costly in the real world without prior testing of protocol.
Simulation plays a vital role in imitating the realistic behavior
of vehicular traffic. Matlab is good for implementing the
algorithm accurately and provides mathematical proof for the
algorithm implementation. Matlab offers many predefined
mathematical functions for technical computing which
contains a large set of mathematical functions. This work
simulated with 200 vehicles in the roadmap scenario and result
shown in the figure 1.
Distance in meters
Fig.1 Implementation of Algorithm
In figure 1, the entire colored circle and the blank circle
represent the vehicle at an instant of time. Nodes are
represented with different color for better understanding of
results. Vehicle detecting abnormal condition is indicated in
the figure 1 as red thick node at the bottom left corner of the
scenario. When a vehicle detecting an abnormal condition it
has to inform other vehicle by using simple broadcasting.
Since each vehicle is equipped with GPS, selection of
broadcasting node is based on the position of node. Selection
of rebroadcasting node is based on the certain distance. The
red thick node selects the green node as the next forwarding
node. The green node again selects the yellow node as the next
forwarding node. Yellow node then selects red triangle node
as the next forwarding node but this node again selects the
green node as forwarding node. This selected green node was
previously the broadcasting node of red node. The red triangle
node then selects the blue triangle node for message
rebroadcast but some node selected was previously the
broadcasting node of another node. This blue triangle node
again selects read circle node as the next forwarding node. The
red circled node selected for rebroadcast was previously the
rebroadcasting node of some another node in the scenario.
This red circled node again selects the black triangle node for
message rebroadcast. But some of the node selected is
previously the rebroadcasting node of other vehicles. This
work shown that instead of selecting all the nodes in the
sender’s communication range for rebroadcast some of the
nodes are selected in the communication range. The broadcast
storm problem reduced efficiently but some of the nodes in the
sender’s communication range repeatedly act as the
rebroadcasting node.
Fig 2 Number of rebroadcasting nodes
Simulation results show that efficiency of alert dissemination
is increased and reduced the broadcast storm problem. But
some node again and again act as the rebroadcasting node of
some others as shown in figure.1.Selection of a set of
forwarding node for rebroadcasting is a challenge. About
42.50% of node has been selected for rebroadcast when
simulated with 200 vehicles in the scenario as sown in
figure.2. About 85 nodes act as the rebroadcasting node in the
scenario.
6. CONCLUSIONS AND FUTURE WORKS
This work outcome mobility model for VANET and improves
the warning message dissemination by considering dynamic
roadmap profiling. Based on the city profile information and
estimated vehicle density alert dissemination efficiency can be
improved. When the vehicle determine the city profile of their
current area where the vehicle is moving is necessary for
improving the alert dissemination process. Algorithm selects
adequate dissemination scheme based on the environment
Distanceinmeters
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dynamically. Simulation result shows that around 50% of
vehicle act as the rebroadcasting node when simulated with
200 vehicles. This work reduces the broadcast storm problem
but not completely reduced the problem because some nodes
again act as the rebroadcasting node and rebroadcast the same
messages in the network. This work proposes a non-geometric
broadcast approach for completely remove the broadcast storm
problem. In order to minimize communication area overlap
and maximize the broadcast coverage a virtual hexagonal
network is considered. GPS accuracy affects the
communication performance since GPS has about 50m to
100m of error bounds. Nodes that are closely located at the
boundary of sender’s communication range are selected for
rebroadcasting the message and to maximize the broadcast
coverage without using GPS.
REFERENCES
[1] Bi Y., Cai C., Shen X. and Zhao H.,” A cross layer
broadcast protocol for multihop emergency message
dissemination in inter-vehicle communication,” in
Proc. IEEE ICC, 2010, pp. 01-05.
[2] Jianwei N., Chang L., Canfeng C., and Jian M.,
"Adaptive copy and spread data dissemination in
vehicular ad-hoc networks," in Proc.IEEE ICCTA,
2009, pp. 934-939.
[3] Manuel Fogue, Piedad Garrido, Francisco J. Martinez,
Juan-Carlos Cano, Carlos T. Calafate, and Pietro
Manzoni,” An Adaptive System Based on Roadmap
Profiling to Enhance Warning Message Dissemination
in VANETs,” IEEE/ACM Transactions on Networking,
Vol. 21, 2013, pp. 883-895.
[4] Mariyasagayam N., Menouar H., and Lenardi M., "An
adaptive forwarding mechanism for data dissemination
in vehicular networks," in Proc. IEEE VNC, 2009, pp.
1-5.
[5] Masoud Zarifneshat and PejmanKhadivi,” Using
mobile node speed changes for movement direction
change prediction in a realistic category of mobility
models,” Journal of Network and Computer
Applications, Vol 36, 2013, pp. 1078–1090.
[6] Martinez F. J., Fogue M., Coll M., Cano J.-C., Calafate
C., and Manzoni P., Crovella M., Feeney L.,
Rubenstein D., and Raghavan S., Eds, "Evaluating the
impact of a novel warning message dissemination
scheme for VANETs using real city maps," in Proc.
Networking, Vol. 6091, 2010, pp. 265-276.
[7] Suriyapaibonwattana K. and Pornavalai C., "An
effective safety alert broadcast algorithm for
VANET," in Proc. ISCIT, 2008, pp. 247-250.
[8] Tseng Y. C., Ni S. –Y., Chen .Y. –S., and sheu J. –P.,
"The broadcast Storm problem in a mobile ad hoc
network," Wireless Netw., Vol. 8, 2002, pp. 153-167.
[9] Wisitpongphan N., Tonguz O.K., Parikh J. S.,
Mudalige P., Bai F. and Sadekar V., "Broadcast storm
mitigation techniques in vehicular ad hoc networks,"
Wireless Commun., Vol. 14, 2007, pp. 84-94.