Download or read book Position based Routing and MAC Protocols for Wireless Ad hoc Networks written by Hadi Noureddine and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents the Forecasting Routing Technique (FORTEL), a routing protocol for Mobile Ad-Hoc Networks (MANETs) based on the nodes' Location Information. FORTEL stores the nodes' location information in the Location Table (LT) in order to construct routes between the source and the destination nodes. FORTEL follows the source routing strategy, which has rarely been applied in position-based routing. According to the source routing strategy, the end-to-end route is attached to the packet, therefore, the processing cost, in regards to the intermediate nodes that simply relay the packet according to route, is minimized. FORTEL's key mechanisms include: first, the location update scheme, employed to keep the LT entries up-to-date with the network topology. Besides the mobility variation and the constant rate location update schemes applied, a window location update scheme is presented to increase the LT's information accuracy. Second, the switching mechanism, between "Hello" message and location update employed, to reduce the protocol's routing overhead. Third and most important is the route computation mechanism, which is integrated with a topology forecasting technique to construct up-to-date routes between the communication peers, aiming to achieve high delivery rate and increase the protocol robustness against the nodes' movement. FORTEL demonstrates higher performance as compared to other MANET's routing protocols, and it delivers up to 20% more packets than AODV and up to 60 % more than DSR and OLSR, while maintaining low levels of routing overhead and network delay at the same time. The effectiveness of the window update scheme is also discussed, and it proves to increase FORTEL's delivery rate by up to 30% as compared to the other update schemes. A common and frequently occurring phenomenon, in wireless networks, is the Hidden Terminal problem that significantly impacts the communication performance and the efficiency of the routing and MAC protocols. Beaconless routing approach in MANETs, which delivers data packets without prior knowledge of any sort Hof information, suffers from packet duplication caused by the hidden nodes during the contention process. Moreover, the throughput of the IEEE MAC protocol decreases dramatically when the hidden terminal problem occurs. RTS/CTS mechanism fails to eliminate the problem and can further degrade the network's performance by introducing additional overhead. To tackle these challenges, this thesis presents two techniques, the Sender Suppression Algorithm and the Location-Aided MAC, where both rely on the nodes' position to eliminate packet duplication in the beaconless routing and improve the performance of the 802.11 MAC respectively. Both schemes are based on the concept of grouping the nodes into zones and assign different time delay to each one. According to the Sender Suppression Algorithm, the sender's forwarding area is divided into three zones, therefore, the local timer, set to define the time that the receiver has to wait before responding to the sender's transmission, is added to the assigned zone delay. Following the first response, the sender interferes and suppresses the receivers with active timer of. On the other hand, the Location-Aided MAC, essentially a hybrid MAC, combines the concepts of time division and carrier sensing. The radio range of the wireless receiver is partitioned into four zones with different zone delays assigned to each zone. Channel access within the zone is purely controlled by CSMA/CA protocol, while it is time-based amongst zones. The effectiveness of the proposed techniques is demonstrated through simulation tests. Location-Aided MAC considerably improves the network's throughput compared to CSMA/CA and RTS/CTS. However, remarkable results come when the proposed technique and the RTS/CTS are combined, which achieves up to 20% more throughput as compared to the standalone RTS/CTS. Finally, the thesis presents a novel link lifetime estimation method for greedy forwarding to compute the link duration between two nodes. Based on a newly introduced Stability-Aware Greedy (SAG) scheme, the proposed method incorporates the destination node in the computation process and thus has a significant advantage over the conventional method, which only considers the information of the nodes composing the link.
Download or read book AD HOC NETWORKS written by Prasant Mohapatra and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: AD HOC NETWORKS: Technologies and Protocols is a concise in-depth treatment of various constituent components of ad hoc network protocols. It reviews issues related to medium access control, scalable routing, group communications, use of directional/smart antennas, network security, and power management among other topics. The authors examine various technologies that may aid ad hoc networking including the presence of an ability to tune transmission power levels or the deployment of sophisticated smart antennae. Contributors to this volume include experts that have been active in ad hoc network research and have published in the premier conferences and journals in this subject area. AD HOC NETWORKS: Protocols and Technologies will be immensely useful as a reference work to engineers and researchers as well as to advanced level students in the areas of wireless networks, and computer networks.
Download or read book Routing Algorithms for Ad Hoc Wireless Networks with a Realistic Physical Layer written by Johnson Kuruvila and published by . This book was released on 2006 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mobile Ad Hoc Networking written by Stefano Basagni and published by John Wiley & Sons. This book was released on 2004-10-07 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: From physical issues up to applications aspects, Mobile Ad Hoc Networking comprehensively covers all areas of the technology, including protocols and models, with an emphasis on the most current research and development in the rapidly growing area of ad hoc networks. All material has been carefully screened for quality and relevance and reviewed by the most renowned and involved experts in the field. Explores the most recent research and development in the rapidly growing area of ad hoc networks. Includes coverage of ad hoc networking trends, possible architectures, and the advantages/limits for future commercial, social, and educational applications. Ad hoc networks have been an intense area of research and development but many products that fully utilize this technology are only now being widely deployed throughout the world.
Download or read book Mobility based routing overhead management in reconfigurable wireless ad hoc networks written by Wilfred Githuka Gikaru and published by Cuvillier Verlag. This book was released on 2004 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ad Hoc and Sensor Networks written by Carlos de Morais Cordeiro and published by World Scientific Publishing Company. This book was released on 2006-03-01 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a new explanatory cross-layer model specifically designed to understand all aspects of ad hoc and sensor networking, from design through performance issues to application requirements. Future directions, challenges and potential simulation projects are also discussed. The topics included represent a significant portion of what is going on in academia and industry. The vast materials provided will enable readers to not only understand and position themselves in this hot area, but also to develop new capabilities, enhance skills, share expertise, consolidate knowledge and design future solutions. Thus, the book is useful for researchers and engineers, and anyone who seeks a deeper understanding of this growing field and wishes to pursue it as a future research topic.
Download or read book Ad Hoc Sensor Networks written by Carlos De Morais Cordeiro and published by World Scientific. This book was released on 2006 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces a new explanatory cross-layer model specifically designed to understand all aspects of ad hoc and sensor networking, from design through performance issues to application requirements. Future directions, challenges and potential simulation projects are also discussed. The topics included represent a significant portion of what is going on in academia and industry. The vast materials provided will enable readers to not only understand and position themselves in this hot area, but also to develop new capabilities, enhance skills, share expertise, consolidate knowledge and design future solutions. Thus, the book is useful for researchers and engineers, and anyone who seeks a deeper understanding of this growing field and wishes to pursue it as a future research topic.
Download or read book Ad Hoc Wireless Networking written by Xiuzhen Cheng and published by Springer Science & Business Media. This book was released on 2004 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad Hoc Wireless Networking is the next big thing in communication. This volume reveals the state-of-the-art of ad hoc wireless networking in addition to giving the fundamentals of routing protocols. It covers the topics of security, TCP performance over wireless links, power conservation, location discovery, scalability, proactivity, routing protocols, computational geometry, and more. The 15 self-contained chapters are authored by experts in wireless networking and mobile computing. Audience: Both specialists and uninformed readers will find this volume stimulating and helpful.
Download or read book Simulation of Position based Routing Algorithms in Wireless Ad Hoc Networks with Irregular Transmission Ranges written by Hai Xiao Chai and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mobile Ad Hoc Networks written by G Ram Mohana Reddy and published by CRC Press. This book was released on 2016-08-19 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Algorithms and Protocols for Wireless and Mobile Ad Hoc Networks written by Azzedine Boukerche and published by Wiley-IEEE Press. This book was released on 2009 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on several aspects of wireless ad hoc networks, particularly algorithmic methods and distributed computing with mobility and computation capability. This book provides the crucial building foundation for the design and construction of the future generation of ad hoc networks.
Download or read book Characterizing the Interaction Between Routing and MAC Protocols in Ad Hoc Networks written by and published by . This book was released on 2002 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: We empirically study the effect of mobility on the performance of protocols designed for wireless ad-hoc networks. An important objective is to study the interaction of the Routing and MAC layer protocols under different mobility parameters. We use three basic mobility models: grid mobility model, random waypoint model, and exponential correlated random model. The performance of protocols is measured in terms of (i) latency, (ii) throughput, (iii) number of packets received, (iv) long term fairness and (v) number of control packets at the MAC and routing layer level. Three different commonly studied routing protocols are used: AODV, DSR and LAR1. Similarly three well known MAC protocols are used: MACA, 802.1 1 and CSMA. Our main contribution is simulation based experiments coupled with rigorous statistical analysis to characterize the interaction of MAC layer protocols with routing layer protocols in ad-hoc networks. From the results, we can conclude the following: e No single MAC or Routing protocol dominated the other protocols in their class. Probably more interestingly, no MAURouting protocol combination was better than other combinations over all scenarios and response variables. 0 In general, it is not meaningful to speak about a MAC or a routing protocol in isolation. Presence of interaction leads to trade-offs between the amount of control packets generated by each layer. The results raise the possibility of improving the performance of a particular MAC layer protocol by using a cleverly designed routing protocol or vice-versa. Thus in order to improve the performanceof a communication network, it is important to study the entire protocol stack as a single algorithmic construct; optimizing individual layers in the seven layer OS1 stack will not yield performance improvements beyond a point. A methodological contribution of this paper is the use of statistical methods such as analysis of variance (ANOVA), to characterize the interaction between the protocols, mobility patterns and speed. Such methods allow us to analyze complicated experiments with large input space in a systematic manner.
Download or read book Security and Routing in Wireless Networks written by Yang Xiao and published by Nova Publishers. This book was released on 2005 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advance of wireless networks, building reliable and secured network connections is becoming extremely important. On the other hand, ad hoc networks become especially important and have many useful applications. The primary focus of this book is to present these two hot and rapidly evolving areas in wireless networks. Security and scheduling/routing in wireless networks remain challenging research problems due to the complexity involved. How to develop more efficient and reliable wireless networks remains a hot research area. It is this realisation that has motivated the editing of this book. The goal of the book is to serve as a reference for both security in wireless networks and channel access, scheduling, and routing in ad hoc networks. In this book, the authors review important developments and new strategies for these topics. Important features and limitations of methods and models are identified. Consequently, this book can serve as a useful reference for researchers, educators, graduate students, and practitioners in the field of wireless networks. This book contains 14 invited chapters from prominent researchers working in this area around the world. All of the cha
Download or read book Protocols for Mobile Ad Hoc Networks written by Kai Li and published by . This book was released on 2002 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: A mobile ad hoc network is a collection of mobile terminals equipped with wireless transceivers that form an autonomous network without any pre-planned infrastructure or centralized administration. Because of its constantly changing topology, the major challenging issues in such network are the medium access control (MAC) and routing protocols. The purpose of our research is to design some novel protocols for mobile ad hoc networks and evaluate their performances. In this dissertation, we first develop an accurate model for wireless packet transmission and reception in an ad hoc network environment. We implement these models in the ns-2 network simulator to improve its accuracy of capturing the effect of radio interference at the receiver. The modified ns-2 simulator is used as a tool for evaluating the performances of several ad hoc network protocols. We develop a new directional antenna based MAC protocol with power control (DMACP), in which a sender maintains a minimum transmission power level for effective transmission of data packets using directional antennas. Simulation results show the throughput advantage and the savings in the average consumed power in the network using the proposed protocol. In addition, we propose a hybrid routing protocol, using a pre-emptive route discovery to replace an existing route by a shorter route when the route has been used for a given interval of time. It effectively reduces the average end-to-end delay in packet transmission as well as the routing overhead in the network. This research is also extended to wireless sensor networks. We present a new technique for location discovery. Finally, we develop a distributed signal detection and target location framework for wireless sensor networks. Target detection is accompanied by locating the detected target by analyzing the information sent by the sensors. We develop a special technique for target location estimation that uses off-line measurements and iterative computations at a centralized control unit that monitors the data transmitted from the wireless sensors. Simulation results demonstrate the accuracy of this target detection and location estimation scheme.
Download or read book Ad Hoc Wireless Networks Architectures And Protocols written by Murthy and published by Pearson Education India. This book was released on 2004-09 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Handbook of Ad Hoc Wireless Networks written by Mohammad Ilyas and published by CRC Press. This book was released on 2017-12-19 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: A relative newcomer to the field of wireless communications, ad hoc networking is growing quickly, both in its importance and its applications. With rapid advances in hardware, software, and protocols, ad hoc networks are now coming of age, and the time has come to bring together into one reference their principles, technologies, and techniques. The Handbook of Ad Hoc Wireless Networks does exactly that. Experts from around the world have joined forces to create the definitive reference for the field. From the basic concepts, techniques, systems, and protocols of wireless communication to the particulars of ad hoc network routing methods, power, connections, traffic management, and security, this handbook covers virtually every aspect of ad hoc wireless networking. It includes a section that explores several routing methods and protocols directly related to implementing ad hoc networks in a variety of applications. The benefits of ad hoc wireless networks are many, but several challenges remain. Organized for easy reference, The Handbook of Ad Hoc Wireless Networks is your opportunity to gain quick familiarity with the state of the art, have at your disposal the only complete reference on the subject available, and prepare to meet the technological and implementation challenges you'll encounter in practice.
Download or read book Routing Strategies in Ad hoc Wireless Networks written by Jyoti Raju and published by . This book was released on 2002 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad-hoc wireless networks present a unique design problem for routing. Wireless networks suffer from low bandwidth due to high rates of interference and inherent limitations of the medium. Mobility also increases the bandwidth used for control packets. To conserve on precious bandwidth, routing protocols should generate as few updates as possible. In this dissertation, we propose distance vector solutions to ad-hoc routing because unlike existing routing solutions our solutions do not use sequence numbers and thus are not prone to inefficient or wrong behavior in the presence of node failures. First, we introduce ROAM, the first protocol to correctly tackle the "searching to infinity" problem found in on-demand routing protocols. ROAM can be used in networks with low rates of topology changes because it required reliable updates. Next, we describe two protocols DST (on-demand) and BEST (table-driven) for networks with high rates of topology change. Simulation experiments carried out in two different simulation packages show that these protocols perform an order of magnitude better than representative on-demand and table-driven routing solutions for ad-hoc networks. Finally, we introduce MDST, an on-demand protocol that extends the source tracing algorithm used in DST to create and maintain multiple paths in an ad-hoc wireless network. Multipath routing can be used in ad hoc networks to achieve greater resilience to route failures and better end-to-end delays. Multipath routing is also essential when using QoS metrics like delay in order to avoid route oscillation. We show that multiple paths that are node disjoint and loop free can be maintained with less overhead than DST. Further, these multiple paths decrease the delay of packet delivery and increase the throughput of the network.
