Adaptive And Opportunistic Qos Based Routing Protocol In Vanets
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Adaptive And Opportunistic Qos Based Routing Protocol In Vanets
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Author : Guang Yu Li
language : fr
Publisher:
Release Date : 2015
Adaptive And Opportunistic Qos Based Routing Protocol In Vanets written by Guang Yu Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Les réseaux véhicules (VANET) permettent d'offrir des solutions efficaces et rentables pour diverses applications telles que celles liées à : la sécurité routière, la gestion du trafic routier et les applications multimédia en utilisant les communications sans fil multi-sauts entre les véhicules communicants. Cependant, la mise en place et le maintien de liens multi-sauts fiables dans les environnements VANET posent de réels défis principalement à cause des changements rapides de topologie et des déconnexions fréquentes des liens, ce qui conduit à l'échec et l'inefficacité des protocoles de routage ad hoc traditionnels. Cette thèse propose une nouvelle famille de protocoles de routage (nommés AQRV, AQRV-1 et AQRV-2) adaptés aux caractéristiques intrinsèques des réseaux VANET. Basés sur l'estimation de la qualité de service en temps réel des segments de route (à savoir la probabilité de connectivité, le taux de perte de paquets et le délai), ces trois protocoles de routage reposent sur la sélection dynamique aux intersections du meilleur prochain segment de route pour un routage de bout-en-bout affichant la meilleure QoS (Quality of Service). Cette propriété de sélection opportuniste confère aux protocoles AQRV une bonne adaptation aux scénarios urbains à grande échelle tout en répondant aux contraintes QoS d'un grand nombre d'applications. Afin d'explorer la meilleure route en termes de QoS, la question du routage est vue comme un problème d'optimisation pour lequel un algorithme basé sur l'approche de colonie de fourmis ACO (Ant Colony Optimization) est employé. Par ailleurs, afin de réduire le temps d'exploration des routes et diminuer la charge du trafic de signalisation sur le réseau, une méthode opportuniste est proposée pour explorer efficacement le réseau et rechercher les meilleurs chemins disponibles en termes de QoS locale et globale. En outre, en exploitant des informations sur le trafic, telles que la densité véhiculaire, la vitesse des véhicules et de la longueur des segments de routes, des modèles théoriques sont élaborés pour estimer la qualité de service en temps réel pour deux scénarios distincts : des segments de routes à 1 et à 2 voies. Ces modèles offrent deux principaux avantages: des estimations précises de la qualité des segments de routes et un gain en charge de trafic de signalisation par rapport à la méthode d'estimation traditionnelle reposant sur l'envoi périodique de paquets de signalisation dédiés. Par ailleurs, le concept de TI (Terminal Intersection) est introduit pour mutualiser les routes entre intersections et éviter un routage basé sur nœuds communicants. Ainsi, les différentes paires de communication partagent les informations les plus à jour sur les meilleures routes, ce qui est bénéfique à la réduction de la charge de signalisation et au délai d'établissement des routes. Enfin, pour réduire davantage le trafic de signalisation et diminuer ainsi la congestion du réseau, la technique de transmission à un saut est améliorée, dans le protocole AQRV-2, grâce au concept d'élection distribuée du relayeur qui permet d'éviter la découverte du voisinage par échanges périodiques de paquets Hello. Les performances des protocoles proposés et la pertinence des modèles mathématiques de QoS dérivés ont été évaluées par des séries de simulations implémentant des scénarios réalistes. Une analyse approfondie a permis de montrer la meilleure performance des protocoles de routage développés en termes de signalisation, de délai et de taux de remise de paquets en comparaison aux protocoles de routage de référence. L'étude a également montré l'effet des différents paramètres protocolaires sur les performances globales.
Mobile Ad Hoc Networks
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Author : G Ram Mohana Reddy
language : en
Publisher: CRC Press
Release Date : 2016-08-19
Mobile Ad Hoc Networks written by G Ram Mohana Reddy and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-19 with Computers categories.
In recent years, a lot of work has been done in an effort to incorporate Swarm Intelligence (SI) techniques in building an adaptive routing protocol for Mobile Ad Hoc Networks (MANETs). Since centralized approach for routing in MANETs generally lacks in scalability and fault-tolerance, SI techniques provide a natural solution through a distributed approach for the adaptive routing for MANETs. In SI techniques, the captivating features of insects or mammals are correlated with the real world problems to find solutions. Recently, several applications of bio-inspired and nature-inspired algorithms in telecommunications and computer networks have achieved remarkable success. The main aims/objectives of this book, "Mobile Ad Hoc Networks: Bio-Inspired Quality of Service Aware Routing Protocols", are twofold; firstly it clearly distinguishes between principles of traditional routing protocols and SI based routing protocols, while explaining in detail the analogy between MANETs and SI principles. Secondly, it presents the readers with important Quality of Service (QoS) parameters and explains how SI based routing protocols achieves QoS demands of the applications. This book also gives quantitative and qualitative analysis of some of the SI based routing protocols for MANETs.
Adaptation And Cross Layer Design In Wireless Networks
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Author : Mohamed Ibnkahla
language : en
Publisher: CRC Press
Release Date : 2018-10-08
Adaptation And Cross Layer Design In Wireless Networks written by Mohamed Ibnkahla and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Technology & Engineering categories.
Adaptive techniques play a key role in modern wireless communication systems. The concept of adaptation is emphasized in the Adaptation in Wireless Communications Series through a unified framework across all layers of the wireless protocol stack ranging from the physical layer to the application layer, and from cellular systems to next-generation wireless networks. Adaptation and Cross Layer Design in Wireless Networks is devoted to adaptation in the data link layer, network layer, and application layer. The book presents state-of-the-art adaptation techniques and methodologies, including cross-layer adaptation, joint signal processing, coding and networking, selfishness in mobile ad hoc networks, cooperative and opportunistic protocols, adaptation techniques for multimedia support, self –organizing routing, and tunable security services. It presents several new theoretical paradigms and analytical findings which are supported with various simulation and experimental results. Adaptation in wireless communications is needed in order to achieve high capacity and ubiquitous communications. The current trend in wireless communication systems is to make adaptation dependent upon the state of the relevant parameters in all layers of the system. Focusing on simplified cross layer design approaches, this volume describes advanced techniques such as adaptive resource management, adaptive modulation and coding, 4G communications, QoS, diversity combining, and energy and mobility aware MAC protocols. The first volume in the series, Adaptive Signal Processing in Wireless Communications (cat no.46012) covers adaptive signal processing at the physical layer.
Computational Science And Its Applications Iccsa 2021
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Author : Osvaldo Gervasi
language : en
Publisher: Springer Nature
Release Date : 2021-09-10
Computational Science And Its Applications Iccsa 2021 written by Osvaldo Gervasi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-10 with Computers categories.
The ten-volume set LNCS 12949 – 12958 constitutes the proceedings of the 21st International Conference on Computational Science and Its Applications, ICCSA 2021, which was held in Cagliari, Italy, during September 13 – 16, 2021. The event was organized in a hybrid mode due to the Covid-19 pandemic.The 466 full and 18 short papers presented in these proceedings were carefully reviewed and selected from 1588 submissions. The books cover such topics as multicore architectures, blockchain, mobile and wireless security, sensor networks, open source software, collaborative and social computing systems and tools, cryptography, applied mathematics human computer interaction, software design engineering, and others. Part IV of the set includes the papers on Urban and Regional Planning and the proceedings of the following workshops: International Workshop on Blockchain and Distributed Ledgers: Technologies and Applications (BDLTA 2021); International Workshop on Computational and Applied Mathematics (CAM 2021); International Workshop on Computational and Applied Statistics (CAS 2021); International Workshop on Computerized Evaluation of Economic Activities: Urban Spaces (CEEA 2021).The chapters "Automated Housing Price Valuation and Spatial Data", "Spatial Automated Valuation Model (sAVM) – From the Notion of Space to the Design of an Evaluation Tool", and "A MCDA/GIS-Based Approach for Evaluating Accessibility to Health Facilities" are published open access under a CC BY license (Creative Commons Attribution 4.0 International License).
Qos Based Optimal Routing In Future Opportunistic Networks
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Author : Anthony Azar
language : en
Publisher:
Release Date : 2016
Qos Based Optimal Routing In Future Opportunistic Networks written by Anthony Azar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Conception Et Valuation De Protocole De Routage Ad Hoc
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Author : Martine Wahl
language : fr
Publisher: ISTE Group
Release Date : 2023-07-18
Conception Et Valuation De Protocole De Routage Ad Hoc written by Martine Wahl and has been published by ISTE Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-18 with Computers categories.
Conception et évaluation de protocole de routage ad hoc s’intéresse aux communications ad hoc entre les véhicules dans un environnement routier. Il questionne la continuité des services d’aide à la conduite dépendants des communications dans les zones où aucune infrastructure de communications ne serait opérationnelle. Partant d’un protocole de routage ad hoc proposé par les auteurs, cet ouvrage expose la méthodologie suivie de sa conception à son évaluation. Il présente l’approche de conception basée sur les besoins fonctionnels et propose des analyses pour comprendre le fonctionnement du protocole, ses propriétés ainsi que ses performances pour des applications cibles. S’adressant principalement aux personnes qui débutent dans les domaines de l’ingénierie des protocoles, des réseaux ad hoc ou des systèmes de transport intelligents, cet ouvrage apporte également aux spécialistes un point de vue original sur la littérature scientifique en lien avec ces domaines. Il offre notamment des outils concrets pour faire évoluer leurs propres méthodes de conception et d’évaluation des protocoles de communications.
Qos Management With Adaptive Routing For Next Generation Internet
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Author : Henry C. Quek
language : en
Publisher:
Release Date : 2000-03-01
Qos Management With Adaptive Routing For Next Generation Internet written by Henry C. Quek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-01 with categories.
Up till today, the Internet only provides best-effort service, where traffic is processed as quickly as possible, with no guarantee as to timeliness or actual delivery. As the Internet develops into a global commercial infrastructure, demands for guaranteed and differentiated network quality of service (QoS) will increase rapidly. Several QoS service models have been developed to provide and support QOS in the Internet, namely: Integrated Service (IntServ), Differentiated Service (DiffServ) and MultiProtocol Label Switching (MPLS). QoS routing, such as Widest-Shortest Path, Shortest-Widest Path and Shortest-Distance Path, is required in order to support QoS and optimize the network resource utilization. The Server and Agent based Active network Management (SAAM) system is a network management system designed for the next generation Internet. It is capable of supporting all types of service. It will be able to control and optimize the utilization of the network through resource allocation and adaptive QOS routing. This thesis describes a design and implementation of the QoS Management component of a SAAM Server. This component optimizes the utilization of network resources and supports the various service classes in a cohesive manner. It utilizes an adaptive routing strategy to balance the network load.
Rate Adaptive Opportunistic Routing In Multi Hop Wireless Networks
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Author : Shriniwas B. Kulkarni
language : en
Publisher:
Release Date : 2008
Rate Adaptive Opportunistic Routing In Multi Hop Wireless Networks written by Shriniwas B. Kulkarni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Computer networks categories.
Adaptation In Wireless Communications 2 Volume Set
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Author : Mohamed Ibnkahla
language : en
Publisher: CRC Press
Release Date : 2018-10-08
Adaptation In Wireless Communications 2 Volume Set written by Mohamed Ibnkahla and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Technology & Engineering categories.
The widespread use of adaptation techniques has helped to meet the increased demand for new applications. From adaptive signal processing to cross layer design, Adaptation in Wireless Communications covers all aspects of adaptation in wireless communications in a two-volume set. Each volume provides a unified framework for understanding adaptation and relates various specializations through common terminologies. In addition to simplified state-of-the-art cross layer design approaches, they also describe advanced techniques, such as adaptive resource management, 4G communications, and energy and mobility aware MAC protocols.
An Adaptive Opportunistic Routing Scheme For Wireless Ad Hoc Networks
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Author :
language : en
Publisher:
Release Date : 2009
An Adaptive Opportunistic Routing Scheme For Wireless Ad Hoc Networks written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Abstract?In this paper, an adaptive opportunistic routing scheme for multi-hop wireless ad-hoc networks is proposed. The proposed scheme utilizes a reinforcement learning framework to achieve the optimal performance even in the absence of reliable knowledge about channel statistics and network model. This scheme is shown to be optimal with respect to an expected average per packet cost criterion. The proposed routing scheme jointly addresses the issues of learning and routing in an opportunistic context, where the network structure is characterized by the transmission success probabilities. In particular, this learning framework leads to a stochastic routing scheme which optimally "explores" and "exploits" the opportunities in the network.