Download or read book Scheduling Real time Messages in Packet switched Networks written by University of Illinois at Urbana-Champaign. Department of Computer Science and published by . This book was released on 1996 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a real-time network, it is not practical to have one centralized scheduler manage all the network resources, e.g., the transmission links and buffer space. Instead, each node has its own scheduler which manages the various resources at that node. In an ideal case, the schedulers are completely independent, and the well-known scheduling and analysis techniques developed for single-node systems can be used, thus greatly simplifying the real-time network design. However the use of independent schedulers may lead to buffer overruns or missed deadlines and hence, network failure. This thesis addresses the problems that arise in scheduling real-time messages in a packet-switched network that has multiple schedulers and has limited buffer space. In our development of the schedulers and the mechanisms for synchronization between the schedulers, we address the following issues: the complexity of the scheduler, the complexity of the synchronization mechanism, the scheme for admission control, the achievable utilization of the network, the ability of the scheduler to meet diverse real-time requests, and the robustness of the scheduler under unpredictable conditions such as temporary overload.
Download or read book Scheduling real time traffic in packet switched networks written by Shirish S. Sathaye and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Packet Access Protocols for WDM Networks written by Kemal Bengi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fast growing traffic demand in telecommunication networks, by use of the Internet and an increasing number of broadband services for multimedia com munications, requires new high performance networking technologies. As such, optical WDM networks are playing a pivotal role. Wavelength Division Mul tiplexing (WDM) with many hundreds of wavelength channels per fiber is ex tensively being exploited in wide area networks. With respect to the ongoing trend towards a completely packet-switched mode of operation for all services, WDM networks must be prepared accordingly. This work concentrates on optical packet-switched networking in local and metro area networks for realizing high-performance applications like virtual re ality, medical imaging, and supercomputing. It is well known that in those networks using a star, bus, or ring shared medium, an access protocol is nec essary to guarantee controlled and fair access for all attached nodes. Similar access protocols are to be developed and analyzed for WDM local and metro area networks. Already, many media access protocols for these networks have been described in the literature. However, some aspects of Quality-of-Service (QoS) for different service classes are still an open issue and subject to inten sive research activities. In the introduction, the author, Dr. Kemal Bengi, gives a short classification of media access protocols and network architectures for WDM local and metro area networks. The need for service classes is also em phasized.
Download or read book Resource Management in Real time Systems and Networks written by C. Siva Ram Murthy and published by MIT Press. This book was released on 2001 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the concepts and state-of-the-art research developments of resource management in real-time systems and networks. Real-time systems and networks are of increasing importance in many applications, including automated factories, telecommunication systems, defense systems, and space systems. This book introduces the concepts and state-of-the-art research developments of resource management in real-time systems and networks. Unlike other texts in the field, it covers the entire spectrum of issues in resource management, including task scheduling in uniprocessor real-time systems; task scheduling, fault-tolerant task scheduling, and resource reclaiming in multiprocessor real-time systems; conventional task scheduling and object-based task scheduling in distributed real-time systems; message scheduling; QoS routing; dependable communication; multicast communication; and medium access protocols in real-time networks. It provides algorithmic treatments for all of the issues addressed, highlighting the intuition behind each algorithm and giving examples. The book also includes two chapters of case studies.
Download or read book Interconnection Networks written by Jose Duato and published by Morgan Kaufmann. This book was released on 2003 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword -- Foreword to the First Printing -- Preface -- Chapter 1 -- Introduction -- Chapter 2 -- Message Switching Layer -- Chapter 3 -- Deadlock, Livelock, and Starvation -- Chapter 4 -- Routing Algorithms -- Chapter 5 -- CollectiveCommunicationSupport -- Chapter 6 -- Fault-Tolerant Routing -- Chapter 7 -- Network Architectures -- Chapter 8 -- Messaging Layer Software -- Chapter 9 -- Performance Evaluation -- Appendix A -- Formal Definitions for Deadlock Avoidance -- Appendix B -- Acronyms -- References -- Index.
Download or read book Scheduling and Routing of Soft Real time Traffic in Packet switched Networks written by Sudhir Madhava Rao and published by . This book was released on 1997 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Real Time and Embedded Computing Systems and Applications written by Jing Chen and published by Springer Science & Business Media. This book was released on 2004-05-21 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the 9th International Conference on Real-Time and Embedded Systems and Applications, RTCSA 2003, held in Tainan, Taiwan, in February 2003. The 28 revised full papers and 9 revised short papers presented were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on scheduling, networking and communication, embedded systems and environments, pervasive and ubiquitous computing, systems and architectures, resource management, file systems and databases, performance analysis, and tools and development.
Download or read book Foundations of Dependable Computing written by Gary M. Koob and published by Springer Science & Business Media. This book was released on 1994-09-30 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foundations of Dependable Computing: System Implementation, explores the system infrastructure needed to support the various paradigms of Paradigms for Dependable Applications. Approaches to implementing support mechanisms and to incorporating additional appropriate levels of fault detection and fault tolerance at the processor, network, and operating system level are presented. A primary concern at these levels is balancing cost and performance against coverage and overall dependability. As these chapters demonstrate, low overhead, practical solutions are attainable and not necessarily incompatible with performance considerations. The section on innovative compiler support, in particular, demonstrates how the benefits of application specificity may be obtained while reducing hardware cost and run-time overhead. A companion to this volume (published by Kluwer) subtitled Models and Frameworks for Dependable Systems presents two comprehensive frameworks for reasoning about system dependability, thereby establishing a context for understanding the roles played by specific approaches presented in this book's two companion volumes. It then explores the range of models and analysis methods necessary to design, validate and analyze dependable systems. Another companion to this book (published by Kluwer), subtitled Paradigms for Dependable Applications, presents a variety of specific approaches to achieving dependability at the application level. Driven by the higher level fault models of Models and Frameworks for Dependable Systems, and built on the lower level abstractions implemented in a third companion book subtitled System Implementation, these approaches demonstrate how dependability may be tuned to the requirements of an application, the fault environment, and the characteristics of the target platform. Three classes of paradigms are considered: protocol-based paradigms for distributed applications, algorithm-based paradigms for parallel applications, and approaches to exploiting application semantics in embedded real-time control systems.
Download or read book Real time Systems Scheduling 2 written by Maryline Chetto and published by John Wiley & Sons. This book was released on 2014-09-10 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-time systems are used in a wide range of applications, including control, sensing, multimedia, etc. Scheduling is a central problem for these computing/communication systems since it is responsible for software execution in a timely manner. This book, the second of two volumes on the subject, brings together knowledge on specific topics and discusses the recent advances for some of them. It addresses foundations as well as the latest advances and findings in real-time scheduling, giving comprehensive references to important papers, but the chapters are short and not overloaded with confusing details. Coverage includes scheduling approaches for networks and for energy autonomous systems. Other sophisticated issues, such as feedback control scheduling and probabilistic scheduling, are also addressed. This book can serve as a textbook for courses on the topic in bachelor's degrees and in more advanced master's degree programs. It also provides a reference for computer scientists and engineers involved in the design or the development of Cyber-Physical Systems which require up-to-date real-time scheduling solutions.
Download or read book Delay Fairness and Complexity of Selected Scheduling Disciplines in Broadband Packet switched Networks written by Padmini Vellore and published by . This book was released on 2003 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling Packet Transmissions in a Multi hop Packet Switched Network Based on Message Length written by and published by . This book was released on 1997 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes two algorithms for scheduling packets in a multi-hop network. The objective of the algorithms is to reduce end-to-end message (not packet) transmission delays. Both algorithms schedule packet transmissions based on the length of the original message that the packet belongs to. The first algorithm is preemptive and is based on the shortest-message-first principle and the second is based on the shortest-remaining-transmit-time principle. We develop simulation models for analyzing the algorithms. The simulations show that when message sizes vary widely, these algorithms can significantly reduce average end-to-end message delays compared to First-Come-First-Serve scheduling.
Download or read book Adaptive Security aware Scheduling for Packet Switched Networks Using Real time Multi agent Systems written by Ma'en Saleh Saleh and published by . This book was released on 2012 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional real-time scheduling algorithms are in care of timing constraints; they don't pay any attention to enhance or optimize the real-time packet's security performance. In this work, we propose an adaptive security-aware scheduling with congestion control mechanism for packet switching networks using real-time agent-based systems. The proposed system combines the functionality of real-time scheduling with the security service enhancement, where the real-time scheduling unit uses the differentiated-earliest-deadline-first scheduler, while the security service enhancement scheme adopts a congestion control mechanism based on a resource estimation methodology.
Download or read book Distributed Computing Systems 14th Conference ICDCS 14 written by and published by . This book was released on 1994 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of ICDCS-13 comprise 74 papers in the areas of distributed system architecture and shared memory; distributed operating systems; distributed databases and information systems; distributed system services and management; distributed applications and cooperative work; communication arc
Download or read book Embedded Software and Systems written by Laurence T. Yang and published by Springer Science & Business Media. This book was released on 2005-12-05 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Conference on Embedded Software and Systems, ICESS 2005, held in Xi'an, China, in December 2005. The 63 revised full papers presented together with the abstracts of 3 keynote speeches were thoroughly reviewed and selected from 361 submissions. The papers are organized in topical sections on embedded hardware, embedded software, real-time systems, power aware computing, hardware/software co-design and system-on-chip, testing and verification, reconfigurable computing, agent and distributed computing, wireless communications, mobile computing, pervasive/ubiquitous computing and intelligence, multimedia and human-computer interaction, network protocol, security and fault-tolerance, and abstracts of eight selected workshop papers.
Download or read book Resource Management in Wireless Networking written by Mihaela Cardei and published by Springer Science & Business Media. This book was released on 2006-07-06 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the pattern of the Internet growth in popularity, started in the early 1990s, the current unprecedented expansion of wireless technology promises to have an even greater effect on how people communicate and interact, with considerable socio-economic impact all over the world. The driving force behind this growth is the remarkable progress in component miniaturization, integration, and also devel- ments in waveforms, coding, and communication protocols. Besides established infrastructurebased wireless networks (cellular, WLAN, sat- lite) ad-hoc wireless networks emerge as a new platform for distributed applications and for personal communication in scenarios where deploying infrastructure is not feasible. In ad-hoc wireless networks, each node is capable of forwarding packets on behalf of other nodes, so that multi-hop paths provide end-to-end connectivity. The increased flexibility and mobility of ad-hoc wireless networks are favored for appli- tions in law enforcement, homeland defense and military. In a world where wireless networks become increasingly interoperable with each other and with the high-speed wired Internet, personal communication systems will transform into universal terminals with instant access to variate content and able of handle demanding tasks, such as multimedia and real-time video. With users roaming between networks, and with wide variation in wireless link quality even in a single domain, the communications terminal must continue to provide a level of Quality of Service that is acceptable to the user and conforms to a contracted Service Level Agreement.
Download or read book Distributed Computer Control Systems 1994 written by J.A. De La Puente and published by Elsevier. This book was released on 2014-05-23 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important issues in the development of distributed computer control systems is the ability to build software and hardware which is both reliable and time deterministic; this is an area where control engineering and computer science naturally meet. This publication brings together the latest key papers on research and development in this field, allowing cross-fertilization between the two engineering disciplines involved and allowing both academics and industrial practitioners to find new insights and learn from each other's views.
Download or read book Proceedings of the 17th International Conference on Distributed Computing Systems written by and published by . This book was released on 1997 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the May 1997 conference. Contains 67 papers presented at the conference as well as three panel sessions and three keynote talks. The panels discuss guaranteed quality of service for distributed systems, Java and distributed computing and scalability of the web--all topics which represent trends in distributed computing. Others topics include cache consistency; network protocols; fault- tolerant systems; quorums for scalability; mobile communications; load balancing; WEB; new applications; real-time communications; languages and software; distributed shared memory; security and protocols; and distributed multimedia. No index. Annotation copyrighted by Book News, Inc., Portland, OR.
