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Author : Nicholas Howe Mastronarde
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (73 download)
Download or read book Video Streaming Over Wireless Multi-hop Mesh Networks written by Nicholas Howe Mastronarde and published by . This book was released on 2006 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Benny Bing
Publisher : Cambridge University Press
ISBN 13 : 0521895847
Total Pages : 847 pages
Book Rating : 4.5/5 (218 download)
Download or read book Emerging Technologies in Wireless LANs written by Benny Bing and published by Cambridge University Press. This book was released on 2008 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the key practical considerations for deploying wireless LANs and a solid understanding of the emerging technologies.
Download or read book Performance Evaluation of Video Streaming Over Multi-hop Wireless Local Area Networks written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Internet Protocol Television (IPTV) has become the application that drives the Internet to a new height. However, challenges still remain in IPTV in-home distribution. The high-quality video streaming in IPTV services demands home networks to deliver video streaming packets with stringent Quality-of-Service (QoS) requirements. Currently, most service providers recommend Ethernet-based broadband home networks for IPTV. However, many existing houses are not wired with Ethernet cables and the rewiring cost is prohibitively expensive. Therefore, wireless solutions are preferred if their performance can meet the requirements. IEEE 802.11 wireless local area networks (WLANs) are pervasively adopted in home networks for their flexibility and affordability. However, through our experiments in the real environment, we found that the conventional single-hop infrastructure mode WLANs have very limited capacity and coverage in a typical in-door environment due to high attenuation and interference. The single-hop wireless networks cannot provide support for high-quality video streaming to the entire house. Multi-hop wireless networks are therefore used to extend the coverage. Contrary to the common believes that adding relay routers in the same wireless channel should reduce the throughput, our experiment, analysis and simulation results show that the multi-hop IEEE 802.11 WLANs can improve both the capacity and coverage in certain scenarios, and sufficiently support high-quality video streaming in a typical house. In this research, we analyzed and evaluated the performance of H.264-based video streaming over multi-hop wireless networks. Our analysis and simulation results reveal a wide spectrum of coverage-capacity tradeoff of multi-hop wireless networks in generic scenarios. More- over, we discuss the methods of how to further improve video streaming performance. This research provides the guidance on how to achieve the optimal balance for a given scenario, which is of great i.
Author :
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (422 download)
Download or read book Abstracts of papers presented written by and published by . This book was released on 1969 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kai Zeng
Publisher : John Wiley & Sons
ISBN 13 : 1119974291
Total Pages : 211 pages
Book Rating : 4.1/5 (199 download)
Download or read book Multihop Wireless Networks written by Kai Zeng and published by John Wiley & Sons. This book was released on 2011-07-13 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Xiaolin Cheng
Publisher :
ISBN 13 : 9781267758606
Total Pages : pages
Book Rating : 4.7/5 (586 download)
Download or read book Enhancing Quality of Video Services Over Wireless Networks written by Xiaolin Cheng and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As development of wireless networking technologies continues, it has been increasingly expected to support content-rich multimedia communications (e.g., video) in such networks. In this dissertation, we study the important problems of enhancing QoS support for video applications in wireless mesh networks and LTE networks. We begin our investigation with a video performance evaluation study in a wireless mesh test-bed. The goal is to clearly understand the nature of video streaming and its performance in wireless mesh networks. By extensive experiments in various scenarios we analyze the network parameters and settings which impact video performance. Compared with simulation or network-layer statistics based approaches, our investigation is directly focused on video quality in multi-hop scenarios. The experimental results better represent the characteristics of real networks and reveal the interesting aspects of video performance in mesh networks, which may benefit the design of efficient QoS solutions for multimedia services in wireless mesh networks. Next, we explore the interference issue in wireless mesh networks, and propose an interference-aware admission control and QoS routing scheme, towards enhancing video streaming experience in wireless mesh networks. Interference is characterized using a conflict graph based model. Nodes exchange their flow information periodically and compute their available residual bandwidth based on the local maximal clique constraints. Admission decision is made based on the residual bandwidth at each node. An on-demand routing scheme is implemented to explicitly incorporate the interference model in the route discovery process. By avoiding the "hot-spots" with severe interference, it discovers the routes with less interference and enhances video performance significantly. We also leverage MAC layer retransmission counts to design a combined queuing and routing scheme which achieves better video quality than the existing approaches. A case study is performed focusing on MAC layer retransmission, which helps us better understand the impacting factors on video quality in multi-hop mesh networks. Our scheme is proposed from a cross-layer perspective which leverages the information across network (routing) layer and link (MAC) layer. MAC layer retransmission count is exploited to guide the interface queue management for video packets as well as a metric to construct a retransmission-aware QoS routing scheme. In our approach, the upper layers are aware of the dynamic network status via retransmission count, so timely QoS decision can be made to enhance video quality effectively. For LTE networks, our focus is radio resource management. We first investigate the important problem of downlink resource allocation in recently enhanced LTE-Advanced systems where a newly added feature, carrier aggregation, provides more flexibility in resource allocation in addition to the existing resource block level packet scheduling. The resource allocation problem is formulated as a complex combinatorial problem with multiple constraints. We decompose this highly complex optimization problem and construct a two-tier resource allocation framework which incorporates dynamic component carrier assignment and novel backlog based scheduling schemes with intelligent link adaptation based on weighted CQI. The proposed schemes offer both better throughput and delay performance as well as user fairness. Finally, we address the downlink scheduling problem in LTE networks by directly optimizing video quality. Unlike the conventional scheduling rules which exploit network layer metrics, our scheme is directly targeted on optimizing application-layer video quality. Video quality optimized scheduling is formulated as a complex combinatorial optimization problem, and solved by exploiting a GA (genetic algorithm) based metaheuristic approach. The intrinsic strength of population based solution of GA offers a superior advantage for this type of scheduling problems. Simulation results demonstrate the effectiveness of GA based scheduling scheme compared with the well-known M-LWDF scheduling rule and the simulated annealing method. It can offer better video quality at the receiver within the required delay bound.
Author : Mihaela van der Schaar
Publisher : Elsevier
ISBN 13 : 0080474969
Total Pages : 713 pages
Book Rating : 4.0/5 (84 download)
Download or read book Multimedia over IP and Wireless Networks written by Mihaela van der Schaar and published by Elsevier. This book was released on 2011-07-28 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multimedia over IP and Wireless Networks is an indispensable guide for professionals or researchers working in areas such as networking, communications, data compression, multimedia processing, streaming architectures, and computer graphics. Beginning with a concise overview of the fundamental principles and challenges of multimedia communication and networking, this book then branches off organically to tackle compression and networking next before moving on to systems, wireless multimedia and more advanced topics. The Compression section advises on the best means and methodology to ensure multimedia signal (images, text, audio and data) integrity for transmissions on wireless and wired systems. The Networking section addresses channel protection and performance. In the Systems section, the focus is on streaming media on demand, live broadcast and video and voice's role in real-time communication. Wireless multimedia transmission and Quality of Service issues are discussed in the Wireless Multimedia section. An Advanced Topics section concludes the book with an assortment of topics including Peer-to-Peer multimedia communication and multipath networks. Up-to-date coverage of existing standards for multimedia networking Synergistic tutorial approach reinforces knowledge gained in previous chapters Balanced treatment of audio and video with coverage of end-to-end systems
Author : Fleury, Martin
Publisher : IGI Global
ISBN 13 : 1466616148
Total Pages : 404 pages
Book Rating : 4.4/5 (666 download)
Download or read book Streaming Media with Peer-to-Peer Networks: Wireless Perspectives written by Fleury, Martin and published by IGI Global. This book was released on 2012-05-31 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The number of users who rely on the Internet to deliver multimedia content has grown significantly in recent years. As this consumer demand grows, so, too, does our dependency on a wireless and streaming infrastructure which delivers videos, podcasts, and other multimedia. Streaming Media with Peer-to-Peer Networks: Wireless Perspectives offers insights into current and future communication technologies for a converged Internet that promises soon to be dominated by multimedia applications, at least in terms of bandwidth consumption. The book will be of interest to industry managers, and will also serve as a valuable resource to students and researchers looking to grasp the dynamic issues surrounding video streaming and wireless network development.
Author : Deer Li
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)
Download or read book Performance Evaluation of Video Streaming Over Multi-hop Wireless Local Area Networks written by Deer Li and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Internet Protocol Television (IPTV) has become the application that drives theInternet to a new height. However, challenges still remain in IPTV in-home distribution. The high-quality video streaming in IPTV services demands home networks to deliver video streaming packets with stringent Quality-of-Service (QoS) requirements. Currently, most service providers recommend Ethernet-based broadband home networks for IPTV. However, many existing houses are not wired with Ethernet cables and the rewiring cost is prohibitively expensive. Therefore, wireless solutions are preferred if their performance can meet the requirements. IEEE 802.11 wireless local area networks (WLANs) are pervasively adopted in home networks for their flexibility and affordability. However, through our experiments in the real environment, we found that the conventional single-hop infrastructure mode WLANs have very limited capacity and coverage in a typical in-door environment due to high attenuation and interference. The single-hop wireless networks cannot provide supportfor high-quality video streaming to the entire house. Multi-hop wireless networksare therefore used to extend the coverage. Contrary to the common believes that adding relay routers in the same wireless channel should reduce the throughput, our experiment, analysis and simulation results show that the multi-hop IEEE 802.11 WLANs can improve both the capacity and coverage in certain scenarios, and sufficiently support high-quality video streaming in a typical house. In this research, we analyzed and evaluated the performance of H.264-based video streaming over multi-hop wireless networks. Our analysis and simulation results reveal a wide spectrum ofcoverage-capacity tradeoff of multi-hop wireless networks in generic scenarios. More-over, we discuss the methods of how to further improve video streaming performance. This research provides the guidance on how to achieve the optimal balance for a givenscenario, which is of great importance when deploying end-to-end IPTV services withQoS guarantee.
Author : Hung-Yu Wei
Publisher : John Wiley & Sons
ISBN 13 : 1118571118
Total Pages : 214 pages
Book Rating : 4.1/5 (185 download)
Download or read book WiFi, WiMAX, and LTE Multi-hop Mesh Networks written by Hung-Yu Wei and published by John Wiley & Sons. This book was released on 2013-03-05 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wifi, WiMAX, and Cellular Multihop Networks presents an overview of WiFi-based and WiMAX-based multihop relay networks. As the first text to cover IEEE 802.16j multihop hop relay technology, this revolutionary resource explores the latest advances in multi-hop and ad-hoc networking. Not only does this reference provide the technological aspects, but also the applications for the emerging technology and architectural issues. Ranging from introductory material to advanced topics, this guidebook is essential for engineers, researchers, and students interested in learning more about WiFi and WiMAX multihop relay networks.
Author : Yuwei Xu
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.:/5 (861 download)
Download or read book Optimising Video Streaming Over Multi-hop Wireless Networks written by Yuwei Xu and published by . This book was released on 2013 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shih-Hsien Yang
Publisher :
ISBN 13 : 9781267757616
Total Pages : 112 pages
Book Rating : 4.7/5 (576 download)
Download or read book Video Streaming on Collaborated Mobile Devices Over Wireless Mesh Networks written by Shih-Hsien Yang and published by . This book was released on 2012 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handheld mobile devices have created a new possibility for accessing video content over the wireless network. However, the limited resource, communication bandwidth, and mobility issues present challenges for effective delivery of the video data. On the other hand, presenting the video content with multiple collaborated mobile devices is now made possible by the pico projectors. A group of users can view and share the same video stream by placing their mobile device embedded with pico projectors in a tiled setup. With proper coordination between the devices, we can create a higher resolution display, and evenly distribute the power consumption and network traffic flow to the devices. In the first part of this dissertation, we discuss the issue of collaborating multiple devices and playing the same video content synchronized. Because the synchronization precision requirement is strict for playing multimedia content, we developed a scheme to synchronize multiple devices using only visual feedback. With the visual feedback from the embedded cameras, the mobile devices are able to find out the clock information of neighboring devices, and synchronize themselves autonomously. After the devices are synchronized, the mobile devices start to create a video stream over the wireless channel. To maximize the bandwidth, we propose a distributed and deterministic channel access function, which uses Latin squares to assign channel access slots and avoid potential packet collisions. Once the devices start moving and cause a handoff, the system will have to locate the new position of the devices and relay the data traffic to the new place. However, this process usually will interrupt the ongoing stream and disconnect the device from the network. The last part of this dissertation discusses the mobility issue and propose a solution that is also applicable to a large scale wireless network.
Author : K.R. Rao
Publisher : CRC Press
ISBN 13 : 1466566019
Total Pages : 492 pages
Book Rating : 4.4/5 (665 download)
Download or read book Wireless Multimedia Communication Systems written by K.R. Rao and published by CRC Press. This book was released on 2017-07-12 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid progress in software, hardware, mobile networks, and the potential of interactive media poses many questions for researchers, manufacturers, and operators of wireless multimedia communication systems. Wireless Multimedia Communication Systems: Design, Analysis, and Implementation strives to answer those questions by not only covering the underlying concepts involved in the design, analysis, and implementation of wireless multimedia communication systems, but also by tackling advanced topics such as mobility management, security components, and smart grids. Offering an accessible treatment of the latest research, this book: Presents specific wireless multimedia communication schemes that have proven to be useful Discusses important standardization processing activities regarding wireless networking Includes wireless mesh and multimedia sensor network architectures, protocols, and design optimizations Highlights the challenges associated with meeting complex connectivity requirements Contains numerous figures, tables, examples, references, and a glossary of acronyms Providing coverage of significant technological advances in their initial steps along with a survey of the fundamental principles and practices, Wireless Multimedia Communication Systems: Design, Analysis, and Implementation aids senior-level and graduate-level engineering students and practicing professionals in understanding the processes and furthering the development of today’s wireless multimedia communication systems.
Author : Liansheng Tan
Publisher : CRC Press
ISBN 13 : 1351650211
Total Pages : 669 pages
Book Rating : 4.3/5 (516 download)
Download or read book Resource Allocation and Performance Optimization in Communication Networks and the Internet written by Liansheng Tan and published by CRC Press. This book was released on 2017-08-15 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive introduction to the underlying theory, design techniques and analytical results of wireless communication networks, focusing on the core principles of wireless network design. It elaborates the network utility maximization (NUM) theory with applications in resource allocation of wireless networks, with a central aim of design and the QoS guarantee. It presents and discusses state-of-the-art developments in resource allocation and performance optimization in wireless communication networks. It provides an overview of the general background including the basic wireless communication networks and the relevant protocols, architectures, methods and algorithms.
Author : Haohong Wang
Publisher : John Wiley & Sons
ISBN 13 : 9780470745175
Total Pages : 420 pages
Book Rating : 4.7/5 (451 download)
Download or read book 4G Wireless Video Communications written by Haohong Wang and published by John Wiley & Sons. This book was released on 2009-06-15 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive presentation of the video communication techniques and systems, this book examines 4G wireless systems which are set to revolutionise ubiquitous multimedia communication.4G Wireless Video Communications covers the fundamental theory and looks at systems’ descriptions with a focus on digital video. It addresses the key topics associated with multimedia communication on 4G networks, including advanced video coding standards, error resilience and error concealment techniques, as well as advanced content-analysis and adaptation techniques for video communications, cross-layer design and optimization frameworks and methods. It also provides a high-level overview of the digital video compression standard MPEG-4 AVC/H.264 that is expected to play a key role in 4G networks. Material is presented logically allowing readers to turn directly to specific points of interest. The first half of the book covers fundamental theory and systems, while the second half moves onto advanced techniques and applications. This book is a timely reflection of the latest advances in video communications for 4G wireless systems. One of the first books to study the latest video communications developments for emerging 4G wireless systems Considers challenges and techniques in video delivery over 4G wireless systems Examines system architecture, key techniques and related standards of advanced wireless multimedia applications Written from both the perspective of industry and academia
Author : Xiaolin Tong
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (122 download)
Download or read book Distortion-driven Video Streaming Over Multi-hop Wireless Networks with Path Diversity written by Xiaolin Tong and published by . This book was released on 2006 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Management Association, Information Resources
Publisher : IGI Global
ISBN 13 : 1613501021
Total Pages : 2875 pages
Book Rating : 4.6/5 (135 download)
Download or read book Wireless Technologies: Concepts, Methodologies, Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2011-08-31 with total page 2875 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains the latest research, case studies, theories, and methodologies within the field of wireless technologies.
