Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks

Management of Speech and Video Telephony Quality in Heterogeneous Wireless Networks
Author: Błażej Lewcio
Publisher: Springer Science & Business Media
Total Pages: 161
Release: 2013-11-20
Genre: Technology & Engineering
ISBN: 3319021028

This book shows how networking research and quality engineering can be combined to successfully manage the transmission quality when speech and video telephony is delivered in heterogeneous wireless networks. Nomadic use of services requires intelligent management of ongoing transmission, and to make the best of available resources many fundamental trade-offs must be considered. Network coverage versus throughput and reliability of a connection is one key aspect, efficiency versus robustness of signal compression is another. However, to successfully manage services, user-perceived Quality of Experience (QoE) in heterogeneous networks must be known, and the perception of quality changes must be understood. These issues are addressed in this book, in particular focusing on the perception of quality changes due to switching between diverse networks, speech and video codecs, and encoding bit rates during active calls.

Audiovisual Quality Assessment and Prediction for Videotelephony

Audiovisual Quality Assessment and Prediction for Videotelephony
Author: Benjamin Belmudez
Publisher: Springer
Total Pages: 196
Release: 2014-12-27
Genre: Technology & Engineering
ISBN: 331914166X

The work presented in this book focuses on modeling audiovisual quality as perceived by the users of IP-based solutions for video communication like videotelephony. It also extends the current framework for the parametric prediction of audiovisual call quality. The book addresses several aspects related to the quality perception of entire video calls, namely, the quality estimation of the single audio and video modalities in an interactive context, the audiovisual quality integration of these modalities and the temporal pooling of short sample-based quality scores to account for the perceptual quality impact of time-varying degradations.

Quality of Experience

Quality of Experience
Author: Sebastian Möller
Publisher: Springer
Total Pages: 431
Release: 2014-07-08
Genre: Technology & Engineering
ISBN: 331902681X

This pioneering book develops definitions and concepts related to Quality of Experience in the context of multimedia- and telecommunications-related applications, systems and services and applies these to various fields of communication and media technologies. The editors bring together numerous key-protagonists of the new discipline “Quality of Experience” and combine the state-of-the-art knowledge in one single volume.

Neural Correlates of Quality Perception for Complex Speech Signals

Neural Correlates of Quality Perception for Complex Speech Signals
Author: Jan-Niklas Antons
Publisher: Springer
Total Pages: 108
Release: 2015-02-11
Genre: Technology & Engineering
ISBN: 3319155210

This book interconnects two essential disciplines to study the perception of speech: Neuroscience and Quality of Experience, which to date have rarely been used together for the purposes of research on speech quality perception. In five key experiments, the book demonstrates the application of standard clinical methods in neurophysiology on the one hand and of methods used in fields of research concerned with speech quality perception on the other. Using this combination, the book shows that speech stimuli with different lengths and different quality impairments are accompanied by physiological reactions related to quality variations, e.g., a positive peak in an event-related potential. Furthermore, it demonstrates that – in most cases – quality impairment intensity has an impact on the intensity of physiological reactions.

Quality of Service in Heterogeneous Networks

Quality of Service in Heterogeneous Networks
Author: Novella Bartolini
Publisher: Springer Science & Business Media
Total Pages: 809
Release: 2009-11-09
Genre: Computers
ISBN: 3642106242

This volume presents the proceedings of the 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness and of the Third International ICST Workshop on Advanced Architectures and Algorithms for Internet DElivery and Applications. Both events were held in Las Palmas de Gran Canaria in November 2009. To each of these events is devoted a specific part of the volume. The first part is dedicated to the proceedings of ICST QShine 2009. The first four chapters deal with new issues concerning the quality of service in IP-based telephony and multimedia. A second set of four chapters addresses some important research problems in mul- hop wireless networks, with a special emphasis on the problems of routing. The following three papers deal with recent advances in the field of data mana- ment and area coverage in sensor networks, while a fourth set of chapters deals with mobility and context-aware services. The fifth set of chapters contains new works in the area of Internet delivery and switching systems. The following chapters of the QShine part of the volume are devoted to papers in the areas of resource management in wireless networks, overlay, P2P and SOA arc- tectures. Some works also deal with the optimization of quality of service and energy consumption in WLAN and sensor networks and on the design of a mobility support in mesh networks.

Multihomed Communication with SCTP (Stream Control Transmission Protocol)

Multihomed Communication with SCTP (Stream Control Transmission Protocol)
Author: Victor C.M. Leung
Publisher: CRC Press
Total Pages: 241
Release: 2012-12-19
Genre: Computers
ISBN: 146656699X

Although multihomed communication is a rapidly emerging trend for next generation networks, no known book explores multihomed communication with the Stream Control Transmission Protocol (SCTP). Filling this void, Multihomed Communication with SCTP (Stream Control Transmission Protocol) explains this innovative feature that allows an endpoint to sim

Fixed Mobile Convergence Handbook

Fixed Mobile Convergence Handbook
Author: Syed A. Ahson
Publisher: CRC Press
Total Pages: 493
Release: 2018-09-03
Genre: Technology & Engineering
ISBN: 1420091743

Requirements for next generation networks (NGNs) are fueling an architectural evolution. Service providers are obliged to give users access to content anytime, anyhow, anywhere, on any device. This requires a converged infrastructure in which users across multiple domains can be served through a single unified domain and all network services and business units can be consolidated on a single IP infrastructure. The Fixed Mobile Convergence Handbook is a comprehensive guide to the design, implementation, and management of converged cellular/WiFi wireless networks. This book discusses how FMC is transforming technologies as multimedia ceases to be passively consumed and unidirectional—and becomes increasingly mobile, personalized and interactive. This book also describes ways to ensure that networks remain cost-effective, scalable, reliable, and secure in the face of constant technological evolution. This material encapsulates the state of FMC, covering everything from basic concepts to research-grade material and future directions. Addressing a broad range of topics, the handbook consists of 16 chapters authored by 44 experts from around the world. Subjects include: Femtocell network technology and applications Deployment modes and interference avoidance Architecture for power efficiency Conversational quality and network planning Design of SIP-based mobility management protocols Highly respected in their field, the authors anticipate the key issues and problems that FMC presents—from application inception and deployment to system interconnection and Quality of Service (QoS). Ideal for professional mobile technology designers and/or planners, researchers (faculty members and graduate students), this book provides specific salient features and information that will guide innovation in the 21st century and beyond. Syed Ahson is a senior software design engineer with Microsoft. Previously, he was a senior staff software engineer with Motorola, where he was a leading contributor in the creation of several iDEN, CDMA, and GSM cellular phones. Dr. Mohammad Ilyas is associate dean for research and industry relations at the College of Engineering and Computer Science at Florida Atlantic University, Boca Raton. A consultant to several national and international organizations, Dr. Ilyas is a member of both the IEEE and ASEE.

Distributed Medium Access Control in Wireless Networks

Distributed Medium Access Control in Wireless Networks
Author: Ping Wang
Publisher: Springer Science & Business Media
Total Pages: 117
Release: 2013-03-23
Genre: Computers
ISBN: 1461466024

This brief investigates distributed medium access control (MAC) with QoS provisioning for both single- and multi-hop wireless networks including wireless local area networks (WLANs), wireless ad hoc networks, and wireless mesh networks. For WLANs, an efficient MAC scheme and a call admission control algorithm are presented to provide guaranteed QoS for voice traffic and, at the same time, increase the voice capacity significantly compared with the current WLAN standard. In addition, a novel token-based scheduling scheme is proposed to provide great flexibility and facility to the network service provider for service class management. Also proposed is a novel busy-tone based distributed MAC scheme for wireless ad hoc networks and a collision-free MAC scheme for wireless mesh networks, respectively, taking the different network characteristics into consideration. The proposed schemes enhance the QoS provisioning capability to real-time traffic and, at the same time, significantly improve the system throughput and fairness performance for data traffic, as compared with the most popular IEEE 802.11 MAC scheme.

Wireless Communications

Wireless Communications
Author: Andrea Goldsmith
Publisher: Cambridge University Press
Total Pages: 676
Release: 2005-08-08
Genre: Computers
ISBN: 9780521837163

A comprehensive introduction to the basic principles, design techniques and analytical tools of wireless communications.