scholarly journals Mobility Prediction issues and Challenges in Vehicular Ad-Hoc Networks

2020 ◽  
pp. 992-999
Author(s):  
Kishor N Tayade ◽  
M U Kharat ◽  
S V Gumaste
Keyword(s):  
Ad Hoc Networks ◽  
Road Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobility Prediction ◽  
Node Mobility ◽  
Topology Changes ◽  
Stable Path ◽  
Hoc Networks ◽  
Prediction Techniques

Vehicular Ad Hoc Networks (VANETs) are gaining much attention from both industry and academia communities as an emerging technology. VANET is composed of self-regulating nodes where the vibrant node mobility changes the network topology frequently. The important aim of VANET is to upgrade road safety conditions to minimize extent of road mishaps. The nodes are very mobile in vehicular ad hoc network so routing becomes complex job. As the VANET nodes move very fast the topology changes accordingly. So node mobility prediction in VANET is a very important issue. Further, prediction of mobility helps to estimate the stable path between the nodes which leads to better routing. Estimating secure paths among the routing of nodes perform in a better way, thereby reducing the overhead and minimizing interruptions in connections. This paper explores VANET's basic architecture and discusses a number of current mobility prediction techniques, and concludes with performance analysis of existing routing protocols and proposed mobility prediction methods.

Towards the Development of Vehicular Ad-Hoc Networks (VANETs)

2020 ◽  
pp. 21-47 ◽  
Author(s):  
Mekelleche Fatiha ◽  
Haffaf Hafid
Keyword(s):  
Ad Hoc Networks ◽  
Intelligent Transportation Systems ◽  
Road Safety ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Intelligent Vehicles ◽  
The Road ◽  
Vehicle Communication ◽  
On The Road ◽  
Hoc Networks

Vehicular Ad-Hoc Networks (VANETs), a new mobile ad-hoc network technology (MANET), are currently receiving increased attention from manufacturers and researchers. They consist of several mobile vehicles (intelligent vehicles) that can communicate with each other (inter-vehicle communication) or with fixed road equipment (vehicle-infrastructure communication) adopting new wireless communication technologies. The objective of these networks is to improve road safety by warning motorists of any event on the road (accidents, hazards, possible deviations, etc.), and make the time spent on the road more pleasant and less boring (applications deployed to ensure the comfort of the passengers). Practically, VANETs are designed to support the development of Intelligent Transportation Systems (ITS). The latter are seen as one of the technical solutions to transport challenges. This chapter, given the importance of road safety in the majority of developed countries, presents a comprehensive study on the VANET networks, highlighting their main features.

scholarly journals Source Coding Options to Improve HEVC Video Streaming in Vehicular Networks

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3107 ◽  
Author(s):  
Pedro Abenza ◽  
Manuel Malumbres ◽  
Pablo Piñol ◽  
Otoniel López-Granado
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Video Quality ◽  
Node Mobility ◽  
Network Simulator ◽  
Video Delivery ◽  
Simulation Framework ◽  
Mobility Patterns ◽  
Hoc Networks

Video delivery in Vehicular Ad-hoc NETworks has a great number of applications. However, multimedia streaming over this kind of networks is a very challenging issue because (a) it is one of the most resource-demanding applications; (b) it requires high bandwidth communication channels; (c) it shows moderate to high node mobility patterns and (d) it is common to find high communication interference levels that derive in moderate to high loss rates. In this work, we present a simulation framework based on OMNeT++ network simulator, Veins framework, and the SUMO mobility traffic simulator that aims to study, evaluate, and also design new techniques to improve video delivery over Vehicular Ad-hoc NETworks. Using the proposed simulation framework we will study different coding options, available at the HEVC video encoder, that will help to improve the perceived video quality in this kind of networks. The experimental results show that packet losses significantly reduce video quality when low interference levels are found in an urban scenario. By using different INTRA refresh options combined with appropriate tile coding, we will improve the resilience of HEVC video delivery services in VANET urban scenarios.

Improved GPSR Routing Protocol in VANETs

2013 ◽  
Vol 336-338 ◽  
pp. 1877-1881
Author(s):  
Jian Yao ◽  
Hao You Peng ◽  
Tian Fu
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobility Model ◽  
Mobile Nodes ◽  
Greedy Forwarding ◽  
And Topology ◽  
Topology Changes ◽  
Hoc Networks

According to characteristics that the vehicles move fast and topology changes quickly in Vehicular Ad hoc Networks (VANETs), a novel routing protocol GMGP based on the location is proposed for VANETs. Predicting the changes of the neighboring nodes positions and using greedy forwarding mechanism forward packet, and using a movement perimeter forwarding algorithm to select the next reliable hop node on the basis of direction and velocity of the mobile nodes when the greedy forwarding fails, it improves the reliability of routing. When a more realistic vehicles mobility model is applied to the NS-2 simulation platform, the simulation indicates that the improved routing protocol has better performance than the GPSR routing protocol.

Mobility Prediction and Mobile-aware Routing Protocols in MANETs

2012 ◽  
pp. 1-18
Author(s):  
Lamiaa Khalid ◽  
Muhammad Jaseemmuddin ◽  
Alagan Anpalagan
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocols ◽  
Network Performance ◽  
Ad Hoc ◽  
Prediction Models ◽  
Mobility Prediction ◽  
Node Mobility ◽  
Wireless Devices ◽  
Wireless Medium ◽  
Hoc Networks

Ad hoc wireless networks comprise of mobile devices that use wireless transmission for communication without the need for a pre-existing infrastructure. One of the main characteristics of ad hoc networks is that they are self-organizing, which necessitates that all networking functions be performed by the nodes themselves. When designing mobile ad hoc networks, several challenges arise due to the shared nature of the wireless medium, limited transmission range of wireless devices, and node mobility. Node mobility poses a greater challenge as it makes routes more prone to frequent ruptures, which in turn degrades the overall network performance. If the future movement of the node can be predicted in a precise way, the impact of mobility can be decreased, and the overall performance of the network can be improved. This chapter provides an introduction and a critical review on some of the existing mobility prediction models and their effect on the performance of existing routing protocols.

scholarly journals Survey of Various Approaches To Countermeasure Sybil Attack

2012 ◽  
pp. 123-127
Author(s):  
Karamjeet Kaur ◽  
Sanjay Batish ◽  
Arvind Kakaria
Keyword(s):  
Wireless Communication ◽  
Ad Hoc Networks ◽  
Road Safety ◽  
Traffic Management ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Multiple Identities ◽  
Sybil Attack ◽  
Hoc Networks

Vehicular Ad hoc networks (VANETs) are considered as a promising approach for facilitating road safety, traffic management and infotainment dissemination for drivers and passengers. The development of wireless communication in VANET implies to take into account the need of security. Many attacks rely on having the attackers generate multiple identities to simulate multiple nodes, this is called Sybil attack. In this paper, we discuss various approaches proposed by different researchers to defend against Sybil attack.

Sign in / Sign up

Export Citation Format

Share Document