Download or read book Capacity Consideration of Wireless Ad Hoc Networks written by Yusong Tan and published by . This book was released on 2008 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this dissertation is on the fundamental capacity bounds of wireless ad hoc networks. We establish upper and lower bounds on the capacity to shed light on what is theoretically possible and what is currently achievable. In the first part of the dissertation, we introduce and describe a method to find an upper bound on the capacity of wireless networks with arbitrary topology, size and traffic demands. The upper bound not only provides a yardstick against which the throughput of an existing wireless ad hoc network scheme can be gauged, it also provides insight into how to design better routing and medium access control protocols for wireless networks. Using the upper bound, we examine the behavior of networks of different size, under different channel conditions, and with different traffic patterns. Numeric results indicate that, when the channel conditions are known precisely, shadow and multipath fading increase capacity; and that the capacity increases with network size when full traffic patterns are considered but decreases when directional traffic patterns are considered. In the second part, we obtain the performance of an optimistic protocol based on CSMA/CA and compare it against the upper bound. There is a significant gap between the two results, especially when considering large networks operating in the high SNR region. In the third part, we describe a new time-division scheduling scheme derived from the upper bound. In addition, we make an improvement to the schedules that increases the capacity significantly, even for small to medium size networks. Our schedules perform better than the protocol based on CSMA/CA, for medium to high SNR regions. Moreover, they also perform well against the upper bound when there is a directional traffic pattern, but not as well when there is a full traffic pattern. Finally, we examine the effects of time-varying fading and mobility on the schedules. We conclude that our schedules perform well in an environment where the channel changes slowly relative to the schedule update rate.
Download or read book The Capacity of Wireless Ad Hoc Networks written by Zheng Wang and published by . This book was released on 2010 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Capacity of Wireless Ad Hoc Networks with Heterogeneous Properties written by Mingyue Ji and published by . This book was released on 2010 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Capacity and Cross layer Design of Wireless Ad Hoc Networks written by Stavros Toumpis and published by . This book was released on 2003 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ad Hoc Wireless Networks written by Ozan K. Tonguz and published by Wiley. This book was released on 2006-04-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad hoc networking is a new area in wireless communications that is going to prevail in the next few decades. Understanding the full potential of this technology will lead to new applications both civilian and military, such as military ad hoc wireless networks, environmental sensor networks, car-based ad hoc networks, biomedical networks and many more. This text takes a “bottom-up” perspective. The physical layer performance of ad hoc wireless networks is studied in detail showing the strong dependence of higher layer performance on physical layer capabilities and limitations. A communication-theoretic perspective on the design of ad hoc wireless networks is presented. The interaction between physical layer and higher layers is discussed providing a new perspective in the practical design of ad hoc wireless networks. Topics in the book range from the basic principles of networking and communication systems through to applications making it ideal for practicing and R&D engineers in the wireless communications and networking industries looking to understand this new area. The inclusion of problems and solutions at the end of each chapter furthers understanding and makes it a highly relevant text for post-graduate and senior undergraduates on communication systems and computer science courses.
Download or read book The Capacity of Ad Hoc and Hybrid Wireless Networks Under the Protocol and Physical Models written by Ashish Agarwal and published by . This book was released on 2004 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scaling Laws for Ad Hoc Wireless Networks written by Feng Xue and published by Now Publishers Inc. This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of ad hoc wireless networks demands fundamental understanding about what they can provide in the way of information transfer as well as what the appropriate architectures are for operating them. Scaling Laws for Ad-Hoc Wireless Networks: An Information Theoretic Approach addresses these questions by presenting various models and results that quantify how their information hauling capacity scales with the number of nodes in the network, and also sheds light on high level architecture design for information transport. Scaling Laws for Ad-Hoc Wireless Networks: An Information Theoretic Approach is an invaluable resource for every network engineer or researcher designing or building ad hoc wireless networks.
Download or read book On the Capacity of Three dimensional Wireless Ad Hoc Networks written by Stavros Toumpis and published by . This book was released on 2003 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Capacity Bandwidth and Available Bandwidth in Wireless Ad Hoc Networks Definitions and Estimations written by Marco A. Alzate and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Capacity of Mobile Ad Hoc Wireless Networks written by Ruchi Sharma and published by . This book was released on 2004 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wireless Ad Hoc and Sensor Networks written by Jing (Selina) He and published by CRC Press. This book was released on 2013-08-06 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although wireless sensor networks (WSNs) have been employed across a range of applications, there are few books available that cover the required algorithms, performance analysis, and applications of network management techniques in WSNs. Filling this need, this book presents new network management techniques that can address many of the shortcomings of traditional techniques. It summarizes traditional and classical network management techniques as well as state-of-the-art methods.
Download or read book Emerging Location Aware Broadband Wireless Ad Hoc Networks written by Rajamani Ganesh and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging Location Aware Broadband Wireless Ad Hoc Networks is a compilation of new material on wireless networking and technology addressing several technical challenges in the field. The contributions are authored by distinguished experts who presented experimental results on their work at the recent International Symposium on Personal, Indoor, Mobile, Radio Communications (PIMRC) held in Barcelona, Spain, September 5-8, 2004. The authors present new results on issues involving wireless LANs and ad hoc networks; mobile wireless internet and satellite applications; encoding, algorithms and performance; and issues related to overlay networks, cross layer interactions and smart antennas. Whether you’re a telecommunications/networking specialist, systems engineer or a scientist, Emerging Location Aware Broadband Wireless Ad Hoc Networks provides valuable insight from experts in wireless networking for developing wireless systems and meeting future application requirements.
Download or read book Topology Control in Wireless Ad Hoc and Sensor Networks written by Paolo Santi and published by John Wiley & Sons. This book was released on 2005-08-05 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topology control is fundamental to solving scalability and capacity problems in large-scale wireless ad hoc and sensor networks. Forthcoming wireless multi-hop networks such as ad hoc and sensor networks will allow network nodes to control the communication topology by choosing their transmitting ranges. Briefly, topology control (TC) is the art of co-ordinating nodes’ decisions regarding their transmitting ranges, to generate a network with the desired features. Building an optimized network topology helps surpass the prevalent scalability and capacity problems. Topology Control in Wireless Ad Hoc and Sensor Networks makes the case for topology control and provides an exhaustive coverage of TC techniques in wireless ad hoc and sensor networks, considering both stationary networks, to which most of the existing solutions are tailored, and mobile networks. The author introduces a new taxonomy of topology control and gives a full explication of the applications and challenges of this important topic. Topology Control in Wireless Ad Hoc and Sensor Networks: Defines topology control and explains its necessity, considering both stationary and mobile networks. Describes the most representative TC protocols and their performance. Covers the critical transmitting range for stationary and mobile networks, topology optimization problems such as energy efficiency, and distributed topology control. Discusses implementation and ‘open issues’, including realistic models and the effect of multi-hop data traffic. Presents a case study on routing protocol design, to demonstrate how TC can ease the design of cooperative routing protocols. This invaluable text will provide graduate students in Computer Science, Electrical and Computer Engineering, Applied Mathematics and Physics, researchers in the field of ad hoc networking, and professionals in wireless telecoms as well as networking system developers with a single reference resource on topology control.
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 Analysis and Application written by and published by Allied Publishers. This book was released on with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Transport in Wireless Ad Hoc Networks Capacity Control and Optimization written by Zhenzhen Ye and published by . This book was released on 2009 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Medium Access Control on the Capacity of Mobile Ad Hoc Networks written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As various wireless networks evolves into the next generation to provide better services, a key technology, mobile ad hoc networks (MANETs), has emerged recently. The dynamic topology, multi-hop transmission, and the nature of wireless channels create many challenging research topics in the area of MANETs. Recently, there has been work on determining the capacity of MANETs. The effects of some factors, such as node mobility, number of nodes, and transmission range, on the capacity of MANETs have been considered. In this work, we define and investigate the capacity of MANETs, considering the effects of medium access control (MAC). Since all the nodes in MANETs use a single or multiple channels to communicate, MAC plays an important role in coordinating channel access among nodes so that information gets through from one node to another. The MAC affects the capacity of MANETs in two aspects: collisions and spatial reuse. Three basic mechanisms are adopted to eliminate the incidence of collisions and maximize spatial reuse, i.e., carrier sense, handshake, and back-off. We define and use persistent probability, sensing range and back-off time to represent the effect of these mechanisms. The characteristics of MAC are thoroughly examined and an analytical solution for capacity evaluation is proposed. Numerical results are presented to demonstrate the effects of MAC, including carrier sense, handshake and back-off mechanism on the capacity of MANETs in terms of persistent probability, sensing range, and back-off time.
