Download or read book Adaptive and Opportunistic QoS based Routing Protocol in VANETs written by Guang Yu Li and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Adaptation and Cross Layer Design in Wireless Networks written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2018-10-08 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Computational Science and Its Applications ICCSA 2021 written by Osvaldo Gervasi and published by Springer Nature. This book was released on 2021-09-10 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Adaptation and Cross Layer Design in Wireless Networks written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2018-10-08 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book QOS Based Optimal Routing in Future Opportunistic Networks written by Anthony Azar and published by . This book was released on 2016 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adaptation in Wireless Communications 2 Volume Set written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2018-10-08 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Proceedings of 2nd International Conference on Communication Computing and Networking written by C. Rama Krishna and published by Springer. This book was released on 2018-09-07 with total page 1039 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides insights from the 2nd International Conference on Communication, Computing and Networking organized by the Department of Computer Science and Engineering, National Institute of Technical Teachers Training and Research, Chandigarh, India on March 29–30, 2018. The book includes contributions in which researchers, engineers, and academicians as well as industrial professionals from around the globe presented their research findings and development activities in the field of Computing Technologies, Wireless Networks, Information Security, Image Processing and Data Science. The book provides opportunities for the readers to explore the literature, identify gaps in the existing works and propose new ideas for research.

Download or read book QOS Management with Adaptive Routing for Next Generation Internet written by Henry C. Quek and published by . This book was released on 2000-03-01 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Proceeding of the International Conference on Computer Networks Big Data and IoT ICCBI 2019 written by A. Pasumpon Pandian and published by Springer Nature. This book was released on 2020-03-04 with total page 1019 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the International Conference on Computing Networks, Big Data and IoT [ICCBI 2019], held on December 19–20, 2019 at the Vaigai College of Engineering, Madurai, India. Recent years have witnessed the intertwining development of the Internet of Things and big data, which are increasingly deployed in computer network architecture. As society becomes smarter, it is critical to replace the traditional technologies with modern ICT architectures. In this context, the Internet of Things connects smart objects through the Internet and as a result generates big data. This has led to new computing facilities being developed to derive intelligent decisions in the big data environment. The book covers a variety of topics, including information management, mobile computing and applications, emerging IoT applications, distributed communication networks, cloud computing, and healthcare big data. It also discusses security and privacy issues, network intrusion detection, cryptography, 5G/6G networks, social network analysis, artificial intelligence, human–machine interaction, smart home and smart city applications.

Download or read book Handbook of Research on Fuzzy and Rough Set Theory in Organizational Decision Making written by Sangaiah, Arun Kumar and published by IGI Global. This book was released on 2016-10-17 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soft computing techniques are innovative tools that use nature-inspired algorithms to run predictive analysis of industries from business to software measurement. These tools have gained momentum in recent years for their practicality and flexibility. The Handbook of Research on Fuzzy and Rough Set Theory in Organizational Decision Making collects both empirical and applied research in the field of fuzzy set theory, and bridges the gap between the application of soft computational approaches and the organizational decision making process. This publication is a pivotal reference for business professionals, IT specialists, software engineers, and advanced students of business and information technology.

Download or read book Rate Adaptive Opportunistic Routing in Multi hop Wireless Networks written by Shriniwas B. Kulkarni and published by . This book was released on 2008 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Secure Opportunistic Routing Protocol Based on Reputation Systems in VANETs written by Eqbal Darraji and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scheduling and QoS Enhancement in Wireless Vehicular Ad hoc Networks written by Lusheng Miao and published by . This book was released on 2014 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the protocol design in VANETs is very challenging due to their low latency and high data rate requirements in a high mobility environment. Hence, the central metrics of QoS such as throughput, reliability and delays are critical to the design of protocol in VANETs. Therefore, this project focuses on the scheduling and QoS enhancement algorithms. The QoS analytical model and multi-channel MAC protocol were completed; this was significant for the development of the VANETs.The anticipated benefits of this study may be described as: 1. The duty cycle adaptive MAC protocol could improve the QoS of VANET in the situation where the OBU is equipped with only one transceiver. 2. The results obtained from this model is significant for the designing and evaluation of the vehicular network. 3. Due to the characteristics of VANETs, the requirements of high throughput and low latency are critical in VANETs. An efficient multi-channel MAC protocol is a vital requirement in order to offer efficient, fair and stable channel access using the limited channel resources.

Download or read book Vehicular Ad hoc Networks for Smart Cities written by Anis Laouiti and published by Springer. This book was released on 2014-09-08 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicular communication is a key technology in intelligent transportation systems. For many years now, the academic and industrial research communities have been investigating these communications in order to improve efficiency and safety of future transportation. Vehicular networking offers a wide variety of applications, including safety applications as well as infotainment applications. This book highlights the recent developments in vehicular networking technologies and their interaction with future smart cities in order to promote further research activities and challenges. SAADI BOUDJIT, University of Paris 13, France HAKIMA CHAOUCHI, Telecom SudParis, France YACINE GHAMRI, University La Rochelle, France HALABI HASBULLAH, Universiti Teknologi Petronas, Malaysia ANIS LAOUITI, Telecom SudParis, France SAOUCENE MAHFOUDH, Jeddah, Saudi Arabia PAUL MUHLETHALER, INRIA, France AMIR QAYYUM, Mohamad Ali Jinnah University, Pakistan NAUFAL SAAD, Universiti Teknologi Petronas, Malaysia AHMED SOUA, NIST, USA HAJIME TAZAKI, University of Tokyo, Japan APINUN TUNPAN, Aintec, Thailand WEI WEI, Xi'an University, China RACHID ZAGROUBA, ENSI, Tunisia.

Download or read book Video Coding written by Mohammed Ghanbari and published by . This book was released on 1999 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study offers an introduction to video coding algorithms for readers in electronic engineering, media, broadcasting and transmission. The text works up from basic principles to the advanced video compression systems now being developed, including MPEG 1,2,4 and 7, JPEG, H.261 and H.263.

Download or read book Simple Opportunistic Adaptive Routing written by Jayesh Seshadri and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Broadband Communications Computing and Control for Ubiquitous Intelligence written by Lin Cai and published by Springer Nature. This book was released on 2022-08-09 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the latest advances from both industry and academia on ubiquitous intelligence and how it is enabled by 5G/6G communication technologies. The authors cover network protocol and architecture design, machine learning and artificial intelligence, coordinated control and digital twins technologies, and security and privacy enhancement for ubiquitous intelligence. The authors include recent studies of performance analysis and enhancement of the Internet of Things, cyber-physical systems, edge computing, and cyber twins, all of which provide importance guidance and theoretical tools for developing future ubiquitous intelligence. The content of the book will be of interest to students, educators, and researchers in academia, industry, and research laboratories. Provides comprehensive coverage of enabling communications, computing, and control technologies for ubiquitous intelligence; Presents a novel paradigm of ubiquitous intelligence powered by broadband communications, computing, and control; Includes a review of 5G/6G communication technologies, network protocol and architecture design, and ubiquitous computing.