Mechanisms For Quality Of Service Provisioning In Networks With Extended Services
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Mechanisms For Quality Of Service Provisioning In Networks With Extended Services
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Author : Zhen Qin
language : en
Publisher:
Release Date : 2010
Mechanisms For Quality Of Service Provisioning In Networks With Extended Services written by Zhen Qin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
The emerging network traffic with various Quality-of-Service (QoS) requirements creates a demand for QoS service provisioning beyond the best effort service that Internet currently provides. QoS provisioning requires a framework that satisfies users' QoS and cost demand while maximizes benefits for network service providers. It is considered that QoS provisioning involves three issues: a) estimations of the network QoS performance, which can be achieved by performing network measurement; b) dissemination of the measured QoS states throughout the network with states exchanged among different network routers; and c) QoS routing. In this dissertation, these three issues are addressed. In QoS networks, knowledge of the network status is crucial but current implemented network protocols cannot provide enough QoS measurement functions. For such purposes, a network measurement framework is proposed that runs active measurement tools to estimate multiple QoS classes. An important issue involved in the network measurement is the tasks conflict problem. This problem occurs when multiple active measurement tasks sending probing packets in the same network segment at the same time, and causes misleading report of QoS performance because the tasks' contention for network resources disturb each other's measurement. In this dissertation a novel scheduling algorithm is proposed to allow such contention among measurement tasks and to shorten the measurement period time. In addition, flooding algorithm is dominantly used in link state dissemination. It faces the large overhead problem when used in QoS networks since a lot of QoS states need to be updated frequently. On the contrary, the alternative algorithm, single spanning tree dissemination, may not be able to achieve fast convergence or reliability. In the proposed new scheme, Per-Hop pArtial-Spanning Tree Adjust (PASTA) for dissemination, link states can be distributed with low overhead and fast speed, and the computation complexity to build the tree is small compared to single spanning tree algorithm. The reliability of the dissemination is enhanced by the multi-spanning-tree approach and the back-trace method. Furthermore, in most of the current QoS architectures, a traffic flow receive the unified service at every hop on the path, resulting that the end-to-end QoS provisioning lacks flexibility and granularity. To solve this problem, a nested DiffSery model is presented. In this model, service at each hop is quantified and divided into multiple classes, and the edge router on behalf of user is allowed to select different service at each hop. Under this framework, routing in terms of cost and QoS requirements can be regarded as a delay-leastl-ow-cost (DCLC) problem, which is known to be NP-hard. An improved k-shortest path QoS routing algorithm is proposed to solve this problem.
User Centric Quality Of Service Provisioning In Ip Networks
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Author : Mark Culverhouse
language : en
Publisher:
Release Date : 2012
User Centric Quality Of Service Provisioning In Ip Networks written by Mark Culverhouse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Quality Of Service Qos Provisioning Mechanisms In Fourth Generation Wireless All Ip Networks
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Author : Ahmad Belhoul
language : en
Publisher:
Release Date : 2007
Quality Of Service Qos Provisioning Mechanisms In Fourth Generation Wireless All Ip Networks written by Ahmad Belhoul and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Computer network architectures categories.
Efficient Quality Of Service Provisioning For Moving Networks
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Author : George Kamel
language : en
Publisher:
Release Date : 2010
Efficient Quality Of Service Provisioning For Moving Networks written by George Kamel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Computer networks categories.
Providing Internet connectivity on public transport has the potential to open up a new dimension of consumer entertainment and productivity. However, the potentially large population density and high handover rates of mobile users aboard a public transport vehicle necessitate robust and scalable quality-of-service (QoS) provisioning mechanisms designed for such environments that can improve both pre-session and in-session signalling efficiency. -- A number of Quality of Service (QoS) aggregation policies are proposed that reduce the frequency with which QoS requests are made to a network, and hence increase overall pre-session signalling efficiency. However, since these policies are based on a static, request-rate-dependent parameter, operational inefficiency can occur under highly variant rates of request. Therefore, a cost-driven policy is proposed that is shown to increase signalling efficiency compared with other policies, while, at the same time, not putting users at a disadvantage with long and unpredictable waiting times to establish a session. -- When the access network becomes congested, signalling efficiency is drastically reduced under the cost-driven policy. Therefore, two separate "overlay" policies are proposed to work in place of the cost-driven aggregation policy during periods of congestion: a dynamic policy and a static policy. The static policy is shown to significantly out-perform the case in which no overlay policy is used, significantly increasing cost-efficiency whilst reducing user waiting times. -- Finally, attention is given to the issue of in-session QoS provisioning. Micro-mobility protocols play an important role in providing seamless handover support to terminals. However, such protocols typically suffer from bottleneck congestion, which can lead to a degradation of signalling efficiency and reduced QoS when they are used by moving networks.
Quality Of Service Architectures For Wireless Networks Performance Metrics And Management
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Author : Adibi, Sasan
language : en
Publisher: IGI Global
Release Date : 2010-01-31
Quality Of Service Architectures For Wireless Networks Performance Metrics And Management written by Adibi, Sasan and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-31 with Computers categories.
"This book further explores various issues and proposed solutions for the provision of Quality of Service (QoS) on the wireless networks"--Provided by publisher.
An Agent Based Approach For Coordinated Multi Provider Service Provisioning
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Author : Monique Calisti
language : en
Publisher: Birkhäuser
Release Date : 2012-12-06
An Agent Based Approach For Coordinated Multi Provider Service Provisioning written by Monique Calisti and has been published by Birkhäuser this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This book proposes a novel approach to improve multi-provider interactions based on the coordination of autonomous and self-motivated software entities acting on behalf of distinct operators. In addition, a novel way of addressing resource allocation and pricing in a compact framework is made possible by the use of powerful resource abstraction techniques. The book is addressed to researchers in the area of agent technology, automated negotiation, distributed constraint satisfaction, and networking. Furthermore, it should be a valuable resource for both network and service providers
Managing Ip Networks
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Author : Salah Aidarous
language : en
Publisher: John Wiley & Sons
Release Date : 2003-09-08
Managing Ip Networks written by Salah Aidarous 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 2003-09-08 with Computers categories.
IP has a major role in the evolution of networks and services. Issues relating to end-to-end network and service management which offers advanced services, are addressed in this book; making it a defining work on this topic.
Ubiquitous Services And Applications
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Author :
language : en
Publisher: Margret Schneider
Release Date : 2005
Ubiquitous Services And Applications written by and has been published by Margret Schneider this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Ambient intelligence categories.
Wireless Multi Access Environments And Quality Of Service Provisioning Solutions And Application
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Author : Muntean, Gabriel-Miro
language : en
Publisher: IGI Global
Release Date : 2012-01-31
Wireless Multi Access Environments And Quality Of Service Provisioning Solutions And Application written by Muntean, Gabriel-Miro and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-31 with Technology & Engineering categories.
"This book serves as a vital resource for practitioners to learn about the latest research and methodology within the field of wireless technology, covering important aspects of emerging technologies in the heterogeneous next generation network environment with a focus on wireless communications and their quality"--Provided by publisher.
Quality Of Service In Multiservice Ip Networks
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Author : Marco Ajmone Marsan
language : en
Publisher: Springer Science & Business Media
Release Date : 2001-01-10
Quality Of Service In Multiservice Ip Networks written by Marco Ajmone Marsan 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 2001-01-10 with Business & Economics categories.
This book constitutes the refereed proceedings of the International Workshop on Quality of Service in Multiservice IP Networks, QoS-IP 2001, held in Rome, Italy, in January 2001. The 26 revised full papers presented together with two invited papers were carefully reviewed and selected from 39 submissions. The papers are organized in topical sections on connection admission control, statistical bounds, novel architectures for QoS provisioning, QoS for multicast traffic, source modeling, IP telephony, router and switch algorithms, multicast routing, differentiated services, and QoS in wireless networks.