Enabling Architectures For Qos Provisioning
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Enabling Architectures For Qos Provisioning
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Author : Kim-Khoa Nguyen
language : en
Publisher:
Release Date : 2008
Enabling Architectures For Qos Provisioning written by Kim-Khoa Nguyen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Architectural Description Of The Qos Provision In Generic Processing And Communication Environments
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Author :
language : pt-BR
Publisher:
Release Date : 2003
Architectural Description Of The Qos Provision In Generic Processing And Communication Environments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
O aumento da demanda por plataformas com suporte a aplicações multimídia torna evidente a importância de mecanismos que ofereçam garantias de Qualidade de Serviço (QoS), uma vez que cada mídia exige requisitos própriosde processamento e comunicação. O modelo SCM (Service-Composition Model) fornece abstrações adequadas para a representação e programação de aspectos de QoS e comunicação em grupo em serviços de comunicação. Seguindo sua terminologia, a provisão de QoS pode ser vista como um provedor de serviços onde atuam meta serviços de negociação e sintonização de QoS. A negociação de QoS define mecanismos responsáveis pela admissão de novos fluxos do usuário, enquanto a sintonização de QoS age, durante o fornecimento do serviço, na manutenção do nível de serviço negociado. Tais meta serviços já foram previamente descritos por meio de frameworks em UML. O presente trabalhofocaliza a descrição arquitetural desses meta serviços, utilizando a linguagem de descrição de arquitetura (ADL) Wright, permitindo o emprego de suas ferramentas de análise e verificação formal para inferir propriedades. Para facilitar o emprego dessa abordagem através do uso de uma notação mais próxima do domínio do problema, uma linguagem de domínio específico (DSL) chamada LindaQoS é proposta especificamente para definir hierarquias de subsistemas denegociação e sintonização. O trabalho é complementado por um compilador que traduz especificações LindaQoS para descrições arquiteturais (atualmente, usando Wright) e para linguagens de programação (futuramente em JAVA).
Enabling Technologies And Architectures For Next Generation Networking Capabilities
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Author : Elkhodr, Mahmoud
language : en
Publisher: IGI Global
Release Date : 2018-10-19
Enabling Technologies And Architectures For Next Generation Networking Capabilities written by Elkhodr, Mahmoud and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-19 with Technology & Engineering categories.
With the rise of mobile and wireless technologies, more sustainable networks are necessary to support communication. These next-generation networks can now be utilized to extend the growing era of the Internet of Things. Enabling Technologies and Architectures for Next-Generation Networking Capabilities is an essential reference source that explores the latest research and trends in large-scale 5G technologies deployment, software-defined networking, and other emerging network technologies. Featuring research on topics such as data management, heterogeneous networks, and spectrum sensing, this book is ideally designed for computer engineers, technology developers, network administrators and researchers, professionals, and graduate-level students seeking coverage on current and future network technologies.
From Qos Provisioning To Qos Charging
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Author :
language : en
Publisher:
Release Date : 2002
From Qos Provisioning To Qos Charging written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Computer networks categories.
A Framework For Qos Provisioning In Operating Systems
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Author :
language : pt-BR
Publisher:
Release Date : 2002
A Framework For Qos Provisioning In Operating Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
A demanda progressiva por aplicações multimídia distribuídas, caracterizadas por fortes exigências sobre os recursos computacionais, torna evidente a necessidade de provisão de qualidade de serviço (QoS) em cada um dossubsistemas envolvidos, como redes de comunicação e sistemas operacionais. Ao mesmo tempo, tais subsistemas devem ser flexíveis para que possam oferecer novos serviços a aplicações futuras, ou seja, devem ser adaptáveis em tempo de execução. Especificamente, sistemas operacionais de uso geral provêm pouco ou nenhum suporte a QoS e à adaptabilidade dos serviços, impulsionando váriosestudos isolados nessas áreas. Observando-se algumas tecnologias implementadas em sistemas operacionais específicos, nota-se que os mecanismos de provisãopossuem certas semelhanças funcionais. Assim, este trabalho propõe uma arquitetura adaptável para a provisão de QoS nos subsistemas de rede e de escalonamento de processos de sistemas operacionais, independente de implementação, através da descrição de frameworks genéricos. É demonstrado, também, como os pontos de flexibilização desses frameworks podem ser especializados para a implementação de alguns modelos de QoS. Por último, é proposto um cenário de uso da arquitetura, no qual um sistema operacional de usogeral ligeiramente modificado é utilizado como infra-estrutura para a instanciação dos frameworks de QoS.
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.
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.
From Qos Provisioning To Qos Charging
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Author : Burkhard Stiller
language : en
Publisher: Springer
Release Date : 2003-06-30
From Qos Provisioning To Qos Charging written by Burkhard Stiller and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-06-30 with Computers categories.
This volume of the Lecture Notes in Computer Science series contains the set of papers accepted for publication at the colocated QofIS/ICQT 2002 workshops, i.e. the 3rd COST Action 263 International Workshop on Quality of future Internet Services (QofIS) and the 2nd International Workshop on Internet Charging and QoS Technology (ICQT), both of which took place at the ETH Zric h, Switzerland, hosted by the Computer Engineering and Networking Laboratory, TIK. QofIS 2002 was the third in a series of highly successful technical workshops and meetings on Internet services within the framework of the COST Action 263 Q uality of future Internet Services , following previous events in Berlin, Germany in 2000 and in Coimbra, Portugal in 2001. ICQT 2002 was the follow-up to a vivid and extremely well-attended workshop on Internet economics and charging technology that took place within the framework of the Annual Meeting of the German Society for Computer Science (GI) and the Austrian Computer Society in 2001 in Vienna, Austria.
Qos And Qoe Management In Umts Cellular Systems
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Author : David Soldani
language : en
Publisher: John Wiley & Sons
Release Date : 2007-01-11
Qos And Qoe Management In Umts Cellular Systems written by David Soldani 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 2007-01-11 with Technology & Engineering categories.
This comprehensive volume provides state-of-the art guidance on Quality of Service (QoS) and Quality of end-user Experience (QoE) management in UMTS cellular systems, tackling planning, provisioning, monitoring and optimisation issues in a single accessible resource. In addition, a detailed discussion is provided on service applications, QoS concept, architecture and functions in access, packet & circuit switched core and backbone networks. Defines and explains the differences between QoS and QoE, and end-to-end concept, based on the premise that it is the end-user who is the ultimate beneficiary of QoS. Covers QoS and QoE issues related to present and forthcoming service applications, including multimedia messaging service (MMS), Video Sharing (VS), content download, business connectivity, Push to talk over Cellular (PoC), Voice over IP (VoIP), presence, instant messaging, gaming, streaming and browsing. Presents QoS concepts and architecture as defined in 3GPP Releases 97/98, 99, 5, 6, and 7, and provides a comprehensive description of protocols and packet data transfer across WCDMA evolved and (E)GPRS networks. Discusses service driven radio network planning aspects for (E)GPRS and WCDMA. Includes three detailed chapters covering concepts, means and methods for QoS provisioning, QoS & QoE performance monitoring and optimisation. This book is aimed at operators, vendors, deployers, consultants and managers specialising in the research, development, implementation, marketing and sales of products and tools for QoS and QoE management in UMTS networks. It will also be of interest to postgraduate students and researchers in the field of telecommunications and specialising in UMTS QoS and QoE principles and practices.
Middleware For Communications
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Author : Qusay Mahmoud
language : en
Publisher: John Wiley & Sons
Release Date : 2005-06-10
Middleware For Communications written by Qusay Mahmoud 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 2005-06-10 with Technology & Engineering categories.
A state-of-the-art guide to middleware technologies, and their pivotal role in communications networks. Middleware is about integration and interoperability of applications and services running on heterogeneous computing and communications devices. The services it provides - including identification, authentication, authorization, soft-switching, certification and security - are used in a vast range of global appliances and systems, from smart cards and wireless devices to mobile services and e-Commerce. Qusay H. Mahmoud has created an invaluable reference tool that explores the origins and current uses of middleware (highlighting the importance of such technologies as CORBA, J2EE and JMS) and has thus compiled the roadmap to future research in this area. Middleware for Communications: discusses the emerging fields of Peer-to-Peer (P2P) and grid middleware detailing middleware platforms such as JXTA and the Globus middleware toolkit. shows how Middleware will play a significant role in mobile computing. presents a Platform Supporting Mobile Applications (PLASMA) - a middleware platform that consists of components for location, event, and profile handling of Location-Based Services. introduces middleware security focusing on the appropriate aspects of CORBA, J2EE, and .NET and demonstrates how to realize complex security capabilities such as role-based access control (RBAC) and mandatory access control (MAC). discusses how Quality of Service (QoS) component middleware can be combined with Model Driven Architecture (MDA) technologies to rapidly develop, generate, assemble and deploy flexible communications applications. This incomparable overview of middleware for communications is suitable for graduate students and researchers in communications and computing departments. It is also an authoritative guide for engineers and developers working on distributed systems, mobile computing and networked appliances.