Opportunistic Routing In Wireless Networks
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Opportunistic Routing In Wireless Networks
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Author : Tara Javidi
language : en
Publisher:
Release Date : 2016
Opportunistic Routing In Wireless Networks written by Tara Javidi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Routing (Computer network management) categories.
Wireless multi-hop networks have become an important part of many modern communication systems. Opportunistic routing aims to overcome the deficiencies of conventional routing on wireless multi-hop networks, by specifically utilizing wireless broadcast opportunities and receiver diversity. Opportunistic routing algorithms, which are specifically optimized to incorporate into the routing decisions a model of wireless transmission, take advantage of scheduling, multi-user, and receiver diversity gains and result in significant reduction in the expected cost of routing per packet. The ability of the algorithm to take advantage of the aspects of wireless transmission, however, depends on the scalability and the additional overhead associated with the opportunistic routing as well as the availability of side information regarding wireless channel statistics, topology, etc. This monograph sheds light on the performance gains associated with incorporating into the routing strategy the nature of wireless transmission. This monograph first provides an overview of various opportunistic distance-vector algorithms that have been developed to incorporate wireless transmission and routing opportunities. Furthermore, an optimal opportunistic distance metric is proposed whose performance is examined against the performance of several routing algorithms from the literature. The performance is examined first in analytical examples, then via simulation to identify the strengths of the optimal opportunist routing algorithm. To allow for a scalable and distributed solution, the distributed computation of this optimal distance-metric is provided. The performance of a distributed implementation of the optimal opportunistic routing algorithm is also examined via simulation. In addition to the construction of the opportunistic schemes in centralized and distributed fashions, this monograph also addresses how learning the wireless medium can be efficiently incorporated in the structure of routing algorithm. Finally, this monograph examines the dynamic congestion-based distance metric and its performance against other congestion aware solutions in the literature.
Multihop Wireless Networks
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Author : Kai Zeng
language : en
Publisher: John Wiley & Sons
Release Date : 2011-07-13
Multihop Wireless Networks written by Kai Zeng and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-13 with Technology & Engineering categories.
This book provides an introduction to opportunistic routing an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks This book presents a comprehensive background to the technological challenges lying behind opportunistic routing. The authors cover many fundamental research issues for this new concept, including the basic principles, performance limit and performance improvement of opportunistic routing compared to traditional routing, energy efficiency and distributed opportunistic routing protocol design, geographic opportunistic routing, opportunistic broadcasting, and security issues associated with opportunistic routing, etc. Furthermore, the authors discuss technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. The book brings together all the new results on this topic in a systematic, coherent and unified presentation and provides a much needed comprehensive introduction to this topic. Key Features: Addresses opportunistic routing, an emerging technology designed to improve the packet forwarding reliability, network capacity and energy efficiency of multihop wireless networks Discusses the technological challenges lying behind this new technology, and covers a wide range of practical implementation issues Explores many fundamental research issues for this new concept, including the basic principles of opportunistic routing, performance limits and performance improvement, and compares them to traditional routing (e.g. energy efficiency and distributed opportunistic routing protocol design, broadcasting, and security issues) Covers technologies such as multi-rate, multi-channel, multi-radio wireless communications, energy detection, channel measurement, etc. This book provides an invaluable reference for researchers working in the field of wireless networks and wireless communications, and Wireless professionals. Graduate students will also find this book of interest.
Selected Topics In Opportunistic Routing In Wireless Networks
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Author : Amir Darehshoorzadeh
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Selected Topics In Opportunistic Routing In Wireless Networks written by Amir Darehshoorzadeh and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Opportunistic Routing (OR) has been investigated in recent years as a way to increase the performance of Wireless Mesh Networks. In OR, in contrast to traditional routing, instead of pre-selecting a single specific node to be the next-hop as a forwarder for a packet, an ordered set of nodes, called candidates, is selected. When the current node transmits a packet, all the candidates that successfully receive it will coordinate with each other to determine which one will actually forward it, while the others will simply discard the packet. This book is a research approach to OR. Analytic models and simulation are used to investigate main issues in OR. These include practical ones, as the selection of candidates, and theoretical ones, as the maximum performance that may be achieved using OR.
Routing In Opportunistic Networks
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Author : Isaac Woungang
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-09-10
Routing In Opportunistic Networks written by Isaac Woungang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-10 with Technology & Engineering categories.
Routing in Opportunistic Networks focuses on the basics of opportunistic networks, modeling and communication in opportunistic networks, routing in opportunistic networks, and collaboration and cooperation in opportunistic networks. The editors will cover such topics as mobility characterization and discovery in opportunistic networks, scheduling and medium access control in opportunistic networks as well as testbed, tools, and measurements for opportunistic networks.
Practical Opportunistic Routing In Wireless Mesh Networks
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Author : Wei Hu
language : en
Publisher:
Release Date : 2012
Practical Opportunistic Routing In Wireless Mesh Networks written by Wei Hu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Computer science categories.
ABSTRACT: Wireless mesh network is usually used to provide Internet access to communities or citywide. Opportunistic Routing (OR) exploits overheard packets in a wireless network and has been proven to be effective for wireless mesh networks. However, the existing OR protocols cannot meet all the requirements for high-speed, multi-rate wireless mesh networks, including- running on commodity Wi-Fi interface, low complexity, supporting multiple link layer data rates, and exploiting partial packets. We propose POR, a new Opportunistic Routing protocol that is the first OR protocol to meet all the critical requirements in practical wireless mesh networks. POR forwards individual packets and does not forward a packet if it has been already received correctly by the downstream nodes according to the feedback sent by the downstream nodes. The individual packet forwarding of POR makes it more friendly with popular protocols such as TCP than existing opportunistic routing protocols that requires packet batching. POR incorporates a block-based partial packet recovery scheme by retransmitting corrupted parts of the packet. POR employs a multi-hop link rate adaptation scheme to adapt to the wireless channel conditions by selectively probing rates that are potentially better with small dummy packets. POR also employs a new path metric that considers the cost in sending feedbacks as well as the capability of the nodes to select appropriate rates to track the channel conditions. POR is a software-only solution. We implement POR within the Click modular routing and our experiments in a 16-node wireless testbed confirm that POR achieves significantly better performance than the compared protocols. We run TCP on top of POR and results show that POR can achieve higher TCP throughput than the compared protocol, which is the first demonstration of TCP on top of any OR protocols.
Study Of Opportunistic Routing Over Wireless Networks
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Author : 許哲榮
language : en
Publisher:
Release Date : 2022
Study Of Opportunistic Routing Over Wireless Networks written by 許哲榮 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
Mobile Opportunistic Networks
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Author : Mieso K. Denko
language : en
Publisher: CRC Press
Release Date : 2016-04-19
Mobile Opportunistic Networks written by Mieso K. Denko and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-19 with Computers categories.
From fundamentals to advanced concepts, this book provides comprehensive technical coverage of this rapidly emerging communications technology. The first section focuses on modeling, networking architecture, and routing problems. The second section examines opportunistic networking technologies and applications. Supplying detailed discussions of key research challenges and open issues, this comprehensive resource provides a clear understanding of industrial and professional standards, communication architectures, network algorithms and protocols, emerging applications, and the latest experimental studies-including simulation tools and implementation test beds.
Opportunistic Networks
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Author : Khaleel Ahmad
language : en
Publisher: CRC Press
Release Date : 2018-10-03
Opportunistic Networks written by Khaleel Ahmad and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-03 with Computers categories.
Opportunistic networks allow mobile users to share information without any network infrastructure.This book is suitable for both undergraduates and postgraduates as it discusses various aspects of opportunistic networking including, foundations of ad hoc network; taxonomy of mobility models, etc.
Trust Management And Security Analysis Of Opportunistic Routing Protocols In Multihop Wireless Networks
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Author : Mahmood Salehi
language : en
Publisher:
Release Date : 2017
Trust Management And Security Analysis Of Opportunistic Routing Protocols In Multihop Wireless Networks written by Mahmood Salehi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Routing in wireless sensor, mobile ad-hoc, and vehicular networks is a crucial operation having significantly attracted scientists' attention during the past years. Opportunistic routing, however, is a novel and promising approach, which is still an ongoing research paradigm. The purpose of opportunistic routing protocols is to increase the reliability of delivering data packets to their destination by utilizing the broadcast nature of wireless networks and selecting a set of nodes, instead of only one, as potential next-hop candidates. Apart from the reliability, security and trustworthiness of communications is also a challenging task. More specifically, almost all traditional and opportunistic routing protocols require cooperation of all network nodes to complete the routing process. However, some nodes in the network may be compromised and avoid collaboration with others due to various selfish or malicious motivations. The focus of this thesis is on modeling security challenges and developing trust-based opportunistic routing protocols. This way, communication between nodes will not only benefit from the reliability of opportunistic routing methods, but also from the security of trust and reputation management schemes. For this purpose, a novel trust-based opportunistic routing protocol is proposed that introduces three different candidate selection metrics known as RTOR, TORDP, and GEOTOR. Such metrics have been designed to address specific characteristics of opportunistic routing protocols. In continue, a watchdog mechanism is proposed to assist nodes in monitoring their candidates, recalculating their trust value, and finally replacing malicious candidates with benign ones. Afterwards, an analytical approach is introduced using Discrete-Time Markov Chain to demonstrate the effect of malicious nodes on different parameters of a wireless network that uses opportunistic routing. In this model, a new method of calculating packet drop ratio is introduced to represent the effect of attackers. The model is then applied on different well-known opportunistic routing protocols and results of the model are verified by simulation. Finally, the proposed analytical model is extended to include a defensive mechanism against adversary nodes. In fact, a packet salvaging mechanism is developed through which backup candidates attempt to save some of the maliciously dropped data packets. Different related network parameters such as delivery ratio, salvage ratio, direct-delivery ratio, etc. are then introduced, calculated, and reported using the introduced model.
Opportunistic Networks
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Author : Anshul Verma
language : en
Publisher: CRC Press
Release Date : 2021-08-19
Opportunistic Networks written by Anshul Verma and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-08-19 with Computers categories.
The opportunistic network is an emerging and recent area of research. To make this research area more adaptable for practical and industrial use, there is a need to further investigate several research challenges in all aspects of opportunistic networks. Therefore, Opportunistic Networks: Fundamentals, Applications and Emerging Trends provides theoretical, algorithmic, simulation, and implementation-based research developments related to fundamentals, applications, and emerging research trends in opportunistic networks. The book follows a theoretical approach to describe fundamentals to beginners and incorporates a practical approach depicting the implementation of real-life applications to intermediate and advanced readers. This book is beneficial for academicians, researchers, developers, and engineers who work in or are interested in the fields related to opportunistic networks, delay tolerant networks, and intermittently connected ad hoc networks. This book also serves as a reference book for graduate and postgraduate courses in computer science, computer engineering, and information technology streams.