scholarly journals Doppler Shift Compensation Schemes in VANETs

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
F. Nyongesa ◽  
K. Djouani ◽  
T. Olwal ◽  
Y. Hamam
Keyword(s):  
Doppler Shift ◽  
Information Dissemination ◽  
Ad Hoc ◽  
Intelligent Transportation System ◽  
Traffic Information ◽  
V2v Communication ◽  
High Data ◽  
Vehicle To Vehicle ◽  
Research Activities ◽  
Data Rates

Over the last decade vehicle-to-vehicle (V2V) communication has received a lot of attention as it is a crucial issue in intravehicle communication as well as in Intelligent Transportation System (ITS). In ITS the focus is placed on integration of communication between mobile and fixed infrastructure to execute road safety as well as nonsafety information dissemination. The safety application such as emergence alerts lays emphasis on low-latency packet delivery rate (PDR), whereas multimedia and infotainment call for high data rates at low bit error rate (BER). The nonsafety information includes multimedia streaming for traffic information and infotainment applications such as playing audio content, utilizing navigation for driving, and accessing Internet. A lot of vehicular ad hoc network (VANET) research has focused on specific areas including channel multiplexing, antenna diversity, and Doppler shift compensation schemes in an attempt to optimize BER performance. Despite this effort few surveys have been conducted to highlight the state-of-the-art collection on Doppler shift compensation schemes. Driven by this cause we survey some of the recent research activities in Doppler shift compensation schemes and highlight challenges and solutions as a stock-taking exercise. Moreover, we present open issues to be further investigated in order to address the challenges of Doppler shift in VANETs.

scholarly journals Review on Security of Information Dissemination and Various Protocols in the Internet-of-Vehicles

2019 ◽  
Vol 7 (6) ◽  
pp. 20-24
Author(s):  
Shradha Tembhare ◽  
Abhishek Mishra
Keyword(s):  
Routing Protocols ◽  
Information Dissemination ◽  
Ad Hoc ◽  
High Mobility ◽  
The Internet ◽  
Internet Of Vehicles ◽  
Vehicle To Vehicle ◽  
Data Provision ◽  
Distinct Features

Internet of Vehicles (IoV) is viewed as a developing worldview for associated vehicles to trade their data with different vehicles utilizing vehicle-to-vehicle (V2V) correspondences by framing a vehicular ad-hoc systems (VANETs), with roadside units utilizing vehicle-to-roadside (V2R) interchanges. Performance of this smart ITS mainly owes to the design of efficient routing protocols in VANETs. Distinct features of VANETs like unsteady connectivity, high mobility and partitioning of the network have made routing of the information in VANETs difficult and challenging, hence dictating the development of efficient routing protocols. The computation of the best route measures the performance of communication whereas routing protocols takes care of communication & routing of the data. Provision of smart communication, necessitates the analysis of routing protocols in VANET. Accordingly in this paper, reviewed various types of existing routing protocols and security approaches in VANET are discussed.

scholarly journals Asset Distribution and Peerless Selection Approach for LTE based Multifarious VANET Networks

2019 ◽  
Vol 4 (1) ◽  
pp. 27-40 ◽  
Author(s):  
Arjun Arora ◽  
Nitin Rakesh ◽  
K. K. Mishra
Keyword(s):  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Mobile Data ◽  
V2v Communication ◽  
The Past ◽  
Vehicle To Vehicle ◽  
Selection Approach ◽  
Asset Distribution ◽  
Hoc Networks ◽  
Complex Scenario

Vehicular ad-hoc networks (VANET) over the past decade have been always part of research and enthusiasts, bringing in a lot of attention towards them. But with the tremendous swell in the imposition for mobile data VANETs are struggling to meet up. Vehicle to Vehicle (V2V) type of transmission is considered a very successful methodology for assuming trustworthy communication amongst vehicles participating in such communications. In the case of multifarious networks also considering the typical cellular network in which cellular links co-exist with V2V communication by making use of the same resources available in a given spectrum, resulting in a complex scenario. Therefore, it is a challenging issue to tackle with asset distribution and peerless selection. In this paper, a scheme is proposed which shows that peerless selection approach and asset distribution can be used as mixed user utility maximization with consideration of a joint network with the delay in transmission and reduction in power. To minimize the complicacy of computation a distributed algorithm is proposed which boils down towards a near-perfect solution by making use of the Lagrangian technique. The numerical analysis shows the extraordinary gains in throughput can be achieved specially with larger networks. The throughput of the network is also improved because of reduction in power.

scholarly journals Congestion Control in V2V Safety Communication: Problem, Analysis, Approaches

Electronics ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 540 ◽  
Author(s):  
Xiaofeng Liu ◽  
Arunita Jaekel
Keyword(s):  
Congestion Control ◽  
Intelligent Transportation Systems ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Performance Metrics ◽  
High Mobility ◽  
Transportation Systems ◽  
Problem Analysis ◽  
V2v Communication ◽  
Research Activities

The emergence of Vehicular Ad Hoc Networks (VANETs) is expected to be an important step toward achieving safety and efficiency in intelligent transportation systems (ITS). One important requirement of safety applications is that vehicles are able to communicate with neighboring vehicles, with very low latency and packet loss. The high mobility, unreliable channel quality and high message rates make this a challenging problem for VANETs. There have been significant research activities in recent years in the development of congestion control algorithms that ensure reliable delivery of safety messages in vehicle-to-vehicle (V2V) communication. In this paper, we present a comprehensive survey of congestion control approaches for VANET. We identify the relevant parameters and performance metrics that can be used to evaluate these approaches and analyze each approach based a number of factors such as the type of traffic, whether it is proactive or reactive, and the mechanism for controlling congestion. We conclude this paper with some additional considerations for designing V2V communication protocols and interesting and open research problems and directions for future work.

VANET Routing and Trust Model Evaluation Using Artificial Bee Colony Algorithm

2017 ◽  
Vol 7 (7) ◽  
pp. 182
Author(s):  
. Rakhi ◽  
G. L Pahuja
Keyword(s):  
Ad Hoc ◽  
Intelligent Transportation System ◽  
Trust Model ◽  
Modern Technology ◽  
Intelligent Vehicles ◽  
Bee Colony ◽  
Vehicle To Vehicle ◽  
Trust Models ◽  
Near Future ◽  
Smart Vehicle

Vehicular ad-hoc network contains of very intelligent vehicles on the pathways and give communication service to the dives in the network or can connect with the roadside devices. In the near future it will provide many service and fast delivery of information with minimal delay. It is the modern technology which is mixing the wireless networking to vehicles. The main goal of the VANET system is to provide uninterrupted connectivity to the vehicular users on road, smart vehicle to vehicle interaction without any interruptions is known as intelligent transportation system (ITS). In this paper, we present a review on the VANET, its trust issues, how routing is done in VANET. Different routing and the type of trust models with which routing takes place are discussed. Comparison of parameter such as throughput, bit-error rate and delay are done on the basis of, with optimization and without optimization according to number of rounds.

scholarly journals PBeiD Priority-based Information Dissemination Protocol for V2V Communication

2021 ◽  
Author(s):  
Ravi Tomar ◽  
Hanumat G Sastry ◽  
Manish Prateek
Keyword(s):  
Information Exchange ◽  
Vehicular Networks ◽  
Information Dissemination ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Vital Role ◽  
Network Partition ◽  
Broadcast Storm ◽  
V2v Communication ◽  
Efficient Information

Abstract In Vehicular Ad-hoc Networks (VANET)s, efficient information dissemination plays a vital role in its successful deployment. Broadcasting has proven as one of the better ways for Information Dissemination over vehicular Networks, and cooperative behaviour among vehicles for information exchange is critical. However, the existing broadcast techniques are still suffering from multiple issues such as Broadcast storm problem, network partition problem, and network contention. Motivated from the aforementioned discussion, in this paper, we propose a Priority-based Efficient Information Dissemination Protocol (PBeiD) to improve the broadcast efficiency in VANETs. PBeiD protocol developed with a blend of probability and density-based information dissemination concepts and implemented in the testbed environment using simulation tools consisting of SUMO, OMNET++, and VEINS. The proposed protocol is compared with benchmark protocols, and the simulation is carried out based on different scenarios from sparse to dense. We found that our protocol is performing well in almost all the cases and to provide proper justification that our results are significant and not by chance, we applied statistical t-test on the results obtained.

scholarly journals Multi Agent Assisted Safety Information Dissemination Scheme for V2V Communication in VANETs: Intelligent Agent Approach

2021 ◽  
Vol 13 (4) ◽  
pp. 49-62
Author(s):  
Ramesh B. Koti ◽  
◽  
Mahabaleshwar S. Kakkasageri
Keyword(s):  
Intelligent Agents ◽  
Information Dissemination ◽  
Intelligent Transportation System ◽  
Data Dissemination ◽  
Short Interval ◽  
Safety Information ◽  
Vital Role ◽  
Vehicular Communication ◽  
Vehicle To Vehicle ◽  
Multi Agent

The safety information dissemination plays a vital role in the VANET communication. It is a technique of transmitting the information at scheduled intervals or during road hazards by detecting the events using onboard system and interfaces. Information is shared between vehicles and road side units which are further used to predict vehicle collisions, road line crossings, environmental warnings, traffic data and road hazards. Interestingly the risk of lateral collisions and dense traffic for vehicles can be avoided by accomplishing fast data dissemination i.e. warning alerts by event detection. Vehicular technology which supports the safe mode of transportation is growing faster due to the deployment of new automated technology in the intelligent transportation system (ITS). The different scenarios used in vehicular communication are Vehicle to Vehicle (V-V), Vehicle to Infrastructure (V-I) and Vehicle to Internet. Some of the important characteristics of vehicular communications are the mobility, frequent changes in topology, varying transmission power of antennas, intermittent connectivity. ITS providing the solutions for most critical transportation issues and inspiring the researchers for the betterment of road safety. In this paper, we propose a multi agent based safety information dissemination scheme for vehicle to vehicle communication. The proposed algorithm performs the safety information dissemination with help of intelligent agents by optimizing the channel access techniques, message encoding and selection of intermediate nodes. Here the communication between source and destination is achieved with fever number of intermediate links by selecting the nodes in the special zone. Short interval codes which represent safety information are effectively transmitted in the intermittent nature of wireless connectivity. This proposed work describes the details of algorithm with associated network environment, multi agent functions and dissemination mechanism to illustrate the improvement in end to end delay, PDR, energy constraints etc. This method reduces the problem of broadcast storm by delivering the information to intended node. Simulation of the proposed work gives the improved results on PDR, latency and connection overhead.

scholarly journals Microscopic Congestion Detection Protocol in VANETs

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Mushtaq Ahmad ◽  
Qingchun Chen ◽  
Zahid Khan
Keyword(s):  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Intelligent Transportation System ◽  
Ieee 802.11P ◽  
Detection Scheme ◽  
Traffic Jam ◽  
V2v Communication ◽  
Congestion Detection ◽  
Vehicle Density ◽  
Hoc Networks

Effective transportation status surveillance imposes critical challenges for the Intelligent Transportation System (ITS) design. In this paper, the microscopic congestion detection protocol (MCDP) is proposed to make the vehicle-to-vehicle (V2V) communication capable of monitoring vehicle density and identifying traffic jam. By introducing transportation control domain in the existing network protocol header, each vehicle can count its neighbors and estimate the time spacing among vehicles. MCDP provides an infrastructure-less solution to the estimate of vehicle density, flow, and average velocity in a microscopically manner. Moreover, the safety speed limit is introduced to make each vehicle calculate its time to cover the intervehicle distance, such that every vehicle is able to assess the transportation congestion by comparing with some predefined safety time threshold. Monte Carlo simulations of the MCDP over four typical Chinese highways are presented to compare the MCDP scheme with the existing Green-Shield congestion detection scheme. In addition, real road traces generated by SUMO over NS2 are utilized to show the achieved performance in terms of throughput, end-to-end delay, and packet delivery rate (PDR) in comparison to DSR and AOMDV in IEEE 802.11p and IEEE 802.11ac scenarios. On the basis of all the results, we conclude that MCDP is an inexpensive transport congestion detection technique for Vehicular Ad Hoc Networks (VANETs).

scholarly journals An affordable solution to V2V Communication using X Bee

2019 ◽  
Vol 8 (12) ◽  
pp. 3931-3935
Keyword(s):  
Operating Systems ◽  
Communication System ◽  
Ad Hoc ◽  
Low Cost ◽  
Mesh Network ◽  
Raspberry Pi ◽  
Single Board Computer ◽  
V2v Communication ◽  
Vehicle To Vehicle ◽  
Sqlite Database

This paper proposes the creation of a platformagnostic Vehicle to Vehicle (V2V) communication system that combines a GPS module, XBee-PRO 900HP ® and Raspberry Pi 3 Model B+ Single Board Computer (SBC) to create a low-cost V2V solution. The choice of XBee® enables the use of Digi Internationals’ proprietary DigiMesh® protocol, which creates an ad-hoc mesh network. Using the XBee® devices data (longitude, latitude, speed, heading) obtained from the GPS modules can be shared between the vehicles (nodes). For testing purposes, the system was programmed in python with a local SQLite database used to store the obtained data. This approach allows basic V2V communication between devices with different operating systems if a compatible XBee® device is attached to the SBC.

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