A Survey and Challenges in Routing and Data Dissemination in Vehicular Ad-hoc Networks (original) (raw)
Mapcast: A map-constrained broadcast solution for VANETs
2010 IEEE 6th International Conference on Wireless and Mobile Computing, Networking and Communications, 2010
Solutions for Vehicular Ad-Hoc Network (VANET) are challenging due to the intrinsic nature of the network which involves, by definition, node mobility, scarce or null fixed nodes and, at the current state of art, lack of solutions for the real-time tracking of positions. Moreover VANETs are meant to provide primarily a solution for the improvement of road safety, by the proper forwarding of messages: this makes the overall service scenario even more critical due to the delay-constraints and the scalability issues.
Position-based Data Dissemination to Interested Region in VANETs
International Journal of Grid and Distributed Computing
Vehicular Ad-hoc Networks (VANETs) are expected to provide assistance to various applications, such as accident broadcast or emergency notification. Some kinds of applications need data to be delivered in a certain region by geocast, which means disseminating information in a specific area, instead of using a certain IP address. In this paper, we propose a data dissemination protocol for VANETs, which delivers data to all the vehicles in an interested region. We assume each vehicle is equipped with GPS and DSRC devices. Our simulation results show that this data dissemination protocol can contribute to high delivery ratio. Also, it performs well in adaptability during heavy traffic.
VANETs Networks Vehicular networks represent a fast emerging class of the MANETs
2016
Vehicular Ad-hoc Networks (VANETs) are known as a special type of Mobile Ad-hoc Networks (MANETs) specialized in vehicular communications. These networks are based on smart vehicles and basestations, which share data by means of wireless communications. To route these information, a routing protocol is required. Since the VANETs have a particular network features as rapidly changeable topology, designing an efficient routing scheme is a very hard task. In this paper, we mainly focus on surveying new routing protocols dedicated to VANETs. We present unicast, multicast and broadcast protocols. The experimental results are discussed to evaluate the performance of the presented methods. Key-words: Vehicular Ad-hoc networks, Routing, Unicasting, Multicasting, Broadcasting.
VEHICULAR AD-HOC NETWORK: VANET
Vehicular Ad-hoc Networks, (VANET) are a particular kind of Mobile Ad Hoc Network, (MANET), in which vehicles act as nodes and each vehicle is equipped with transmission capabilities which are interconnected to form a network. The topology created by vehicles is usually very dynamic and significantly non-uniformly distributed and this technique is also known as Intelligent Transportation System (ITS).VANETs is a kind of special wireless ad hoc network .VANET has become an active area of research, standardization, and development because it has tremendous potential to improve vehicle and road safety, traffic efficiency and convenience as well as comfort to both drivers and passengers .The aim of this review paper is to give an overview of the vehicular ad hoc networks, its characteristics , the existing VANET routing protocol, Security and privacy, applications.
Evaluating Information Dissemination Approaches in VANETs
2010
Vehicular Ad-hoc Networks (VANETs) appeared as a subclass of MANETs for inter-vehicle communication. VANETs have relatively more dynamic nature as compared to MANETs with respect to network topology. However, among numerous solvable issues in VANETs, the design and implementation of an efficient and scalable architecture for information dissemination constitutes one major issue. In the past few years, several broadcasting protocols for information dissemination are proposed specifically in the context of MANETs. In this paper, we will first elaborate some differentiable characteristics of VANETs and then will present a performance analysis of these broadcasting protocols in VANETs environment.
A Novel VANET Data Dissemination Approach Based on Geospatial Data
Procedia Computer Science, 2016
The main objective of VANET networks is to improve road safety as well as transportation efficiency through the use of wireless communications technologies and the emergence of low cost embedded sensors. Thus, the design of an efficient data dissemination protocol, that informs vehicles about interesting safety events, is of paramount importance. The thriving challenge would be to maximize the delivery ratio by avoiding as far as possible the broadcast storm problem. A scrutiny of the literature wealthy number of approaches highlights that all of them fail to fulfill with a critical requirements. In this paper and to palliate this shortage, we introduce a new infrastructure-less Geocast protocol that send messages only to vehicles in the Zone of Relevance (ZOR) with a minimum overhead cost. Our protocol stands in reaching a high delivery ratio as well as a high Geocast precision by only sending messages to vehicles in the Zone of Relevance (ZOR) with a minimum overhead cost. Carried out experiments show that our protocol outperforms its competitors in terms of effectiveness and efficiency.
Data dissemination in vehicular ad hoc networks (VANET)
2020
With the proliferation of sensor nodes and the development in wireless communication technologies, Wireless Sensor Networks (WSNs) have gained worldwide attention in recent years. They facilitate monitoring and controlling of physical environments from re
International Journal of Advanced Science and Technology, 2020
Vehicles ad hoc networks (VANETs) have arisen as an interesting area of study and implementation. To ensure smart connectivity for vehicle networks, VANETs may enhance the reliability and productivity of road traffic exceptionally. A distribution of data in the VANET system is an extremely difficult challenge because of fast adjustments and recurrent fragmentation of the network.in this paper, we survey on explain this review on three parts. In the first part, we will show the concept of data dissemination and explain all their types. in the second part, we will provide a comprehensive review on kinds of routing protocols, finally, the third part, we will discuss some of the issues and challenges.
Cross-network information dissemination in VANETs
2011
In this work, we provide an overview of an innovative approach for effective cross-network information dissemination, with applications to Vehicular Ad-hoc Networks (VANETs). In particular, we describe the main approach followed in an on-going bilateral Italy-Israel project ("Cross-Network Effective Traffic Alert Dissemination," X-NETAD). The X-NETAD project leverages on the spontaneous formation of WiFi local VANETs, with direct connections between neighboring vehicles, in order to disseminate, very quickly and inexpensively, traffic alerts received from the UMTS network.
International Journal of Computer Applications, 2012
In the present study we have proposed a secured geocaste routing in VANET with two stage efficient communication protocol. The communication protocol operates on two stages. In the first stage vehicles transmit messages within its transmission range of its radar and to the VANET Server. In the second stage VANET Server receives messages from vehicles and sends those messages to all other vehicles belonging to the same geographical region as of sender. Geographical regions are predetermined by VANET Server. One of the interesting features of this protocol is that we use the MANET infrastructure instead of roadside equipments to communicate with VANET server. Added feature of the protocol is that unlike other geocast routing protocol [8] it incorporates security issues too. So the messages are secured and trustworthy messages are broadcasted among the vehicles. The protocol has been simulated with the NS2 simulator. For this two stage communication protocol it has been found from the simulation results that the bandwidth usage is less and thus enhance the throughput and decreases the packet loss.
ROAMER: Roadside Units as message routers in VANETs
Ad Hoc Networks, 2012
Vehicular Ad hoc Networks, also known as VANETs, enable vehicles that are not necessarily within the same radio transmission range to communicate with each other. VANETs also allow vehicles to connect to Roadside Units (RSUs). The latter are connected to the Internet, forming a fixed infrastructure that offers them the capability of communicating with each other and with roaming vehicles. RSUs support cooperative and distributed applications in which vehicles and RSUs work together to coordinate actions and to share and process several types of information. RSUs have so far been used for different roles such as data disseminators, traffic directories, location servers, security managers, and service proxies. In this paper, we focus on routing; namely we exploit RSUs to route packets between any source and destination in the VANET. To our knowledge, this is the first attempt to use the RSU backbone to efficiently route packets to very far locations in VANETs by using geographic forwarding. We evaluate the RSU backbone routing performance via the ns2 simulation platform. We compare our scheme to existing solutions and prove the feasibility and efficiency of our scheme in terms of query delay, packet success delivery ratio, and total generated traffic.
TOWARDS A NEW APPROACH OF DATA DISSEMINATION IN VANETS NETWORKS
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.
Vehicular ad hoc networks (VANETS): status, results, and challenges
Telecommunication Systems
Recent advances in hardware, software, and communication technologies are enabling the design and implementation of a whole range of different types of networks that are being deployed in various environments. One such network that has received a lot of interest in the last couple of years is the Vehicular Ad-Hoc Network (VANET). VANET has become an active area of research, standardization, and development because it has tremendous potential to improve vehicle and road safety, traffic efficiency, and convenience as well as comfort to both drivers and passengers. Recent research efforts have placed a strong emphasis on novel VANET design architectures and implementations. A lot of VANET research work have focused on specific areas including routing, broadcasting, Quality of Service (QoS), and security. We survey some of the recent research results in these areas. We present a review of wireless access standards for VANETs, and describe some of the recent VANET trials and deployments in the US, Japan, and the European Union. In addition, we also briefly present some of the simulators currently available to VANET researchers for VANET simulations and we assess their benefits and limitations. Finally, we outline some of the VANET research challenges that still need to be addressed to enable the ubiquitous deployment and widespead adoption of scalable, reliable, robust, and secure VANET architectures, protocols, technologies, and services.
Routing in Vehicular Ad hoc Networks is a challenging task due to the unique characteristics of the network such as high mobility of nodes, dynamically changing topology and highly partitioned network. It is a challenge to ensure reliable, continuous and seamless communication in the presence of speeding vehicles. The performance of routing protocols depends on various internal factors such as mobility of nodes and external factors such as road topology and obstacles that block the signal. This demands a highly adaptive approach to deal with the dynamic scenarios by selecting the best routing and forwarding strategies and by using appropriate mobility and propagation models. In this paper we review the existing routing protocols for VANETs and categorise them into a taxonomy based on key attributes such as network architecture, applications supported, routing strategies, forwarding strategies, mobility models and quality of service metrics. Protocols belonging to unicast, multicast, geocast and broadcast categories are discussed. Strengths and weaknesses of various protocols using topology based, position based and cluster based approaches are analysed. Emphasis is given on the adaptive and context-aware routing protocols. Simulation of broadcast and unicast protocols is carried out and the results are presented.
State of the Art of Data Dissemination in VANETs
International Journal of Computer Theory and Engineering, 2010
In VANETs (Vehicular Ad-hoc NETworks), RSUs (Road Side Units) and vehicles disseminate safety and non safety messages. The aim of VANETs is to enable dissemination of traffic information and road conditions as detected by independently moving vehicles. For VANETs applications, it is important to disseminate data from an information source vehicle to many destination vehicles on the road. Dissemination of data in VANETs is used to improve the quality of driving in terms of time, distance, and safety. In this paper, a solution of ensuring data dissemination in vehicular ad-hoc networks for sparse and dense vehicular network is presented. Architecture for data dissemination is also proposed.
Special Issue on Advances in Vehicular Ad Hoc Networking and Applications 2014
In the last decade, we have witnessed a big increase in the use of wireless technologies in different type of network, such as ad hoc sensor networks and vehicular ad hoc networks. Ubiquitous access to the information anywhere, anytime, from any device by end-users continue to conduct the need to develop innovative architectures and protocols for ad hoc networks with capabilities that can help achieve this goal. The birth of mobile networks like the VANETs has opened up many research challenges that need to be treating to enable end-to-end communication transparently over a highly heterogeneous network. In particular VANET networks (Vehicular Ad hoc NETworks) are a new form of mobile ad hoc networks used to establish communications between vehicles or with infrastructure located at roadsides. These networks are used to meet the needs of communication applied to transportation networks to improve the driving and road safety for road users. Applications related to road safety is an important part of VANET applications and include the dissemination of messages on the state of traffic , the road conditions , accidents or messages reminding limitations speed and safety distances. Services deployed in VANETs are not limited only to road safety applications but other types of applications that allow the dissemination of practical information by providers of services to drivers of cars like the location of available parking places.
Vehicular Ad hoc Network (VANETs): A Review
International Journal of Innovative Research in Computer and Communication Engineering, 2015
A Vehicular Ad-Hoc Network or VANET is a sub form of Mobile Ad-Hoc Network or MANET that provides communication between vehicles and between vehicles and road-side base stations with an aim of providing efficient and safe transportation. A vehicle in VANET is considered to be an intelligent mobile node capable of communicating with its neighbours and other vehicles in the network. VANET introduces more challenges aspects as compare to MANET because of high mobility of nodes and fast topology changes in VANET. Various routing protocols have been designed and presented by researchers after considering the major challenges involved in VANETs This paper provides a survey of routing protocols for VANET . It covers application areas, challenges and security issues prevailing in VANETs.
GeoSPIN: An Approach for Geocast Routing Based on SPatial INformation in VANETs
2013 IEEE 78th Vehicular Technology Conference (VTC Fall), 2013
Vehicular Ad Hoc Networks (VANETs) has been widely used to provide data exchange services in Intelligent Transport Systems (ITS), which should facilitate user's routines. At the same time that user's routines are improved, they can also be used as an important source of data for helping the decision-making process of VANET services. These routines can be acquired from vehicle's trajectories through the use of Global Positioning Systems (GPS). In this context, the combination of location-based data and data forwarding methods becomes an interesting challenge since these topics are not directly related. Therefore, the key idea of this work is to provide a geocast routing mechanism in VANETs based on daily movements of users in their vehicles. The main contribution is related to the delivery rate, which increases in partitioned and sparsely connected networks. The results show the efficiency of our new method to perform opportunistic routing based on location data, which discovers the best routes to forward packets through the network.
Efficient Data Dissemination Techniques in VANETs: A Review
International Journal of Computer Applications, 2015
Vehicular ad hoc network (VANETs) being a sub class of MANET is a challenging field of wireless communication. It is a sensible way of using infrastructure fewer networks augmented with Intelligent Transportation System (ITS). It is an emerging trend now days for vehicles to be equipped with an embedded on-board computing unit with communication capabilities to enhance the overall driving experience. Such a system enables vehicle to vehicle and vehicle-to-infrastructure communication and provides vehicles with up-to-date route and traffic information. Due to its highly dynamic topology as well as occurring often disconnection among vehicles, various categories of protocols have designed for its efficient and reliable working. While driving, a large amount of data and information are accessible to everyone. Many attractive applications over vehicular ad hoc network (VANETs) need data to be transmitted to the remote destinations through multiple paths, but some unique characteristics of VANETs incur unstable data delivery performances. Efficient data dissemination to a desired number of receivers in a vehicular ad hoc network (VANET) is a new issue and a challenging one considering the dynamic nature of VANETs. This paper presents an overview on simple and robust dissemination technique that efficiently deals with data dissemination in both dense and sparse vehicular networks. This technique divides the users in two categories and it takes three cases.