Bibliothèque de L'IMIST/CNRST

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Mobile ad hoc networks : energy-efficient real-time data communications / par Tavli, Bulent. Publication : [S.l.] : Springer, 2006 . 265 p. ; , A Mobile Ad Hoc Network (MANET) is an autonomous system of mobile nodes connected by wireless links to form a communication network. The challenge in the design of protocol architectures for MANETs is to provide a certain level of Quality of Service (QoS) in information transfer using the limited network resources, namely energy and bandwidth. This design goal is further constrained by the unreliable physical channel, the mobility of the nodes, and the lack of infrastructure for network coordination. To meet the QoS requirements for real-time data communication, some coordination of the channel is needed, but centralized coordination is not feasible in MANETs. Furthermore, since a MANET is a dynamic, distributed entity, the optimal control of such a system should also be dynamic and adaptive. This book presents the Time Reservation using Adaptive Control for Energy Efficiency (TRACE) family of protocol architectures that provide such dynamic coordinated channel access in a distributed manner, enabling energy-efficient, real-time data communications in MANETs. Furthermore, this book provides an introduction to the fundamentals of MANETs, an overview of protocols for each layer of the protocol stack, and a discussion of the issues involved with energy-efficient protocol design and quality of service for real-time data transmission. 25 cm. Date : 2006 Disponibilité : Exemplaires disponibles: La bibliothèque des sciences de l'ingénieur (1),

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Video traces for network performance evaluation : a comprehensive overview and guide on video traces and their utilization in networking research / par Seeling, Patrick. Publication : [S.l.] : Springer, 2006 . 274 p. ; , Multimedia networking, especially the delivery video over the Internet, accounts for a large fraction of todayЀ™s and future computer networks. Working with actual video provides several challenges on different technical and social levels. Video traces - a representation of video data and video quality in textual format - present a different approach to facilitate studies with video traffic. Video Traces for Network Performance Evaluation provides a comprehensive introduction to video traces and their use in networking research. After first providing the basics of digital video and video coding, video traces are introduced, covering the metrics captured in the traces, the trace generation, as well as the statistical characteristics of the video characterized in the traces. Attention is then turned to the use of the video traces in networking research, examining the practical aspects of transporting video over Internet Protocol (IP) networks and the simulation of video transport using traces, including the simulations that incorporate the impact of transmission errors using offset distortion traces. Software tools and utilities that facilitate the use of video traces in network simulations and other video networking related software tools are also presented. 24 cm. Date : 2006 Disponibilité : Exemplaires disponibles: La bibliothèque des sciences de l'ingénieur (1),

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