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检索条件"任意字段=Conference on Multimedia Computing and Networking 2002"

共 32 条记录，以下是21-30 订阅

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International conference on Information networking, ICOIN 2002

International Conference on Information Networking, ICOIN 20...

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International conference on Information networking, ICOIN 2002

ISBN: (纸本)3540442553

The proceedings contain 76 papers. The special focus in this conference is on Wireless Communications Technologies and Network Applications. The topics include: Modelling QoS based admission control in mobile multimedia systems using an extension of GSPN;a comparative performance evaluation of the transport layer protocols for wireless transaction processing in mobile internet environments;mobile multicast method using the habitude of movement;a proposal of a quasi-solution state evolution algorithm for channel assignment problems;software architecture for the adaptation of dialogs and contents to different devices;seamless QoS handling mechanism for macro and micro mobility;group-based location management scheme in personal communication networks;a fast WWW access method for multiple wireless links shared by mobile computers;a study of broadcasting method using linear clustering to support location dependent query in mobile computing;an AAA application protocol design and service for secure wireless internet gateway roaming;a new location caching scheme employing forwarding pointers in PCS networks;evaluation of a location management system for wireless communicating mobile computers;a multi-path support for mobile IP with the hierarchical architecture;user defined location area for registration and paging;a fast authentication method for secure and seamless handoff;performance evaluation and improvement of an ad hoc wireless network;an asymmetric routing protocol using detour in mobile ad hoc networks;buffer dimensioning of ATM satellite link using probabilistic burstiness curve and development of a high-accurate time server for measurements of the internet.

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2002 IEEE Wireless Communications and networking conference Record. WCNC 2002 (Cat. No.02TH8609)

2002 IEEE Wireless Communications and Networking Conference ...

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IEEE conference on Wireless Communications and networking

ISBN: (纸本)0780373766

The following topics are dealt with: 3G and 4G wireless networks; wireless IP and home networks; mobile agents; global communications; signal processing; coding; modulation; QoS; software defined radio; antennas and RF systems; wireless multimedia; heterogeneous wireless networks; wireless sensor networks; wireless ad hoc networks; multiple access methods; mobility and location management; mobile ATM and mobile computing; protocols and active networks; radio resource management; broadband wireless networks; low power algorithms; satellite based systems; mobility security and privacy.

关键词： Signal processing Encoding Modulation Antennas multimedia communication Packet radio Multiaccess communication Protocols Asynchronous transfer mode Radio spectrum management Broadband communication Satellite communication

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Design and implementation of a dynamic VRML-browsable, movie on-demand system distributed over Internet

Design and implementation of a dynamic VRML-browsable, movie...

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IEEE International conference on multimedia and Expo (ICME)

作者： G. Fortino G. Confessore A. Mantuano University of Calabria-DEIS Rende Cosenza Italy AVR-Advanced Virtual Research Inc. Castrolibero Cosenza Italy

This paper presents the design and the implementation of the Virtual Video Gallery (VVG), an advanced distributed video on-demand system accessible through a dynamic virtual world, which mimes an art gallery where movie posters are exhibited The design phase is driven by object-oriented modeling techniques which depend on UML and its extensions purposely suited to model multimedia information systems. The implementation centers on an approach blending (i) Java, which provides powerful computing, multimedia and networking capabilities, (ii) VRML, which supports an easy construction of complex virtual worlds, and (iii) WWW facilities.

关键词： Motion pictures Internet Video on demand Object oriented modeling Power system modeling Art Unified modeling language multimedia systems Information systems Java

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Mobility support for differentiated services in next generation MPLS-based wireless networks

Mobility support for differentiated services in next generat...

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International conference on Communications, Circuits and Systems (ICCCAS)

作者： Tingzhou Yang Yixin Dong Yian Zhang D. Makrakis Broadband Wireless and Internetworking Research Laboratory University of Ottawa Ottawa Ont. Canada

The rapid growth of wireless networks and services, integrated with the next-generation mobile communication systems, has led to the era of the pervasive computing. The popularity of the lightweight portable computers with the growing demands of transmitting real-time multimedia applications over the wireless Internet provides strong motivations to the service providers to support not only seamless user mobility, but also continuous and seamless service provisions to the customers. We propose a mobile differentiated services architecture for next generation wireless networks based on the hierarchical mobile MPLS (H-MPLS). We also propose an extension to the current H-MPLS protocol and make it applicable to our architecture. This mobile differentiated services mechanism is applied to satisfy the QoS requirements of mobile users who subscribe services in their home domain and move into some other foreign domains. Hence, the mobile users could enjoy the continuous services without worrying about where they are. A series of simulations, with multimedia applications like video and voice, were performed to evaluate the proposed system.

关键词： Next generation networking Wireless networks multimedia systems Mobile communication Pervasive computing Portable computers Application software Web and internet services Computer architecture Multiprotocol label switching

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A dynamic bandwidth management scheme for wireless multimedia systems

A dynamic bandwidth management scheme for wireless multimedi...

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conference on Local Computer Networks (LCN)

作者： A. Boukerche P. Vikram Paradise Research Laboratory Department of Computer Science University of North Texas Denton TX USA

With the advent of wireless and mobile networks and the growing number of mobile users using the system, multimedia services are expected to dominate the design of the next generation of wireless systems. Our motivation in this paper is to develop a scheme that would support a large number of users as well as their demands, while eliminating to a large extent the side effects of the inherent protocols used in our scheme. We propose a novel hybrid medium access control (MAC) scheme, based on the theoretical 'near-perfect' CDMA using W-CDMA/SSFH/OFDM and an SDM component to support sector-based multimedia services. We also present a scheduling mechanism to support the hybrid algorithm. In order to increase the number of users that can be supported by the system and thereby reducing the call-blocking factor as much as possible, we have made use of the dynamic packet assignment algorithm. In this paper, we present our hybrid MAC protocol, its implementation and the simulation experiments we have carried out to evaluate its performance.

关键词： Bandwidth multimedia systems Multiaccess communication OFDM Media Access Protocol Interference Streaming media Mobile computing Next generation networking Scheduling algorithm

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A novel mobility model and resource reservation strategy for multimedia LEO satellite networks

A novel mobility model and resource reservation strategy for...

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IEEE conference on Wireless Communications and networking

作者： Hoang Nam Nguyen S. Olariu P. Todorova Institute of Communication Networks Technical University of of Vienna Vienna Austria Department of Computer Science Old Dominion University Norfolk VA USA FhG Fokus Berlin Germany

ISBN: (纸本)0780373766

multimedia LEO satellite networks will play an important role in providing truly global coverage required by mobile personal communication services. Due to the high mobility inherent to LEO systems, a number of challenging technical problems arise. The first contribution of this work is to propose a realistic mobility model, taking into account the rotation of the Earth, which was systematically ignored in the literature. Our second contribution is a novel resource reservation strategy, termed sequential probabilistic resource reservation (SPR), specifically designed to minimize connection interruption due to handoffs. Finally, we propose a novel connection admission control (CAC) algorithm, differentiating real-time and non-real-time services. Performance results obtained by simulation show that the novel mobility model is essential for a realistic network performance evaluation and that the novel SPR strategy offers low handoff blocking probability for both service classes and low new call blocking probability for non-real-time connections.

关键词： Low earth orbit satellites Artificial satellites Admission control Personal communication networks Telecommunication traffic Bandwidth Switches Communication networks Computer science Mobile computing

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An analytical framework for the design and performance evaluation of realistic CDMA-CPCH systems

An analytical framework for the design and performance evalu...

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IEEE International conference on Communications (ICC)

作者： S.Z. Ozer S. Papavassiliou MeshNetworks Inc. Orlando FL USA Department of Electrical and Computer Engineering Broadband Mobile and Wireless Networking Laboratory New Jersey Institute of Technology Newark NJ USA

ISBN: (纸本)0780374002

In this paper, we analyze the common packet channel (CPCH) mechanism for finite population, finite sojourn time and general packet length distribution. The obtained results demonstrate that for packet length distributions with the same mean but different tail properties the system behavior can change dramatically. In addition, we demonstrate that this study provides an analytical tool that can be used as the underlying framework for the support of a wide range of applications and management functions such as optimization of design parameters, integration of multimedia services and anomaly detection in CDMA wireless networks.

关键词： Performance analysis Multiaccess communication Delay Probability distribution Wireless networks Spread spectrum communication Packet radio networks Mobile computing Laboratories Design optimization

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Flow assignment in a self-organizing video stream that auto morphs itself while in transit via a quasi-active network

Flow assignment in a self-organizing video stream that auto ...

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IEEE International conference on High Speed Networks and multimedia Communications

作者： J.I. Khan P. Mail S.S. Yang Media Communications and Networking Research Laboratory Department of Computer Science Kent University Kent OH USA

In this paper we present an algorithm for flow assignment in active nomadic computation. We present the algorithm with a novel active application - a cognizant video streaming mechanism which is capable of negotiating local network state based rate and let the video propagate over an extreme network with highly asymmetric link and node capacities. As a platform the stream uses the computing power of a quasi-active network. As a result the passing video stream appears as a self-organizing stream, which automatically senses the network asymmetry and adapts itself as the packets diffuse via the active subnet.

关键词： Streaming media Computer vision Protocols Computer networks Internet Intelligent networks Transcoding Bandwidth Switches Adaptive systems

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Home entertainment network: combination of IEEE 1394 and ultra wideband solutions

Home entertainment network: combination of IEEE 1394 and ult...

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IEEE conference on Ultra Wideband Systems and Technologies

作者： Honggang Zhang T. Udagawa T. Arita M. Nakagawa Shin-Kawasaki Research Center Telecommunications Advancement Organization of Japan Kawasaki Japan Department of Information and Computer Science Keio University Yokohama Japan

This paper investigates a home entertainment network proposal that applies the advantages of ultra wideband (UWB) radio technology and the IEEE 1394 system. We first introduce an overview of the IEEE 1394 standard. Then we describe the network architecture of our proposed home networking scheme, namely IEEE 1394-based UWB home entertainment network connected by a wireless 1394 bridge. The IEEE 1394 backbone network and UWB radio subsystem are discussed in detail. Summaries are provided as well.

关键词： Ultra wideband technology Streaming media Spine multimedia systems Capacity planning Computer peripherals High performance computing Consumer electronics DVD Broadband communication

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multimedia systems: enabling computer engineering education

Multimedia systems: enabling computer engineering education

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Frontiers in Education (FIE) conference

作者： W. Burleson S. Thampuran N. Ramaswamy University of Massachusetts Amherst Electrical and Computer Engineering USA University of Massachusetts Amherst Electrical and Computer Engineering

multimedia systems can provide course content, active learning opportunities and instructional technology to facilitate education in the area of computer engineering to a broad range of students. This paper describes final results of a large NSF-funded project at the University of Massachusetts Amherst. Since the initial stages of this project, multimedia systems have become ubiquitous in our lives. During the lifetime of this project, we have explored rapidly evolving multimedia technologies and applications in a wide variety of scenarios: a novel multimedia courseware approach using a combination of CD/DVD and Web-based technology was designed and developed. Over 400 students have now taken courses using this media in a variety of formats; a new course in multimedia systems for nonmajors was developed and is being used as a core course for new programs in information technology across 29 community colleges, state colleges and universities across Massachusetts; and a set of modules on multimedia systems including video coding, computer graphics, multimedia networking, multimedia hardware, multimedia architectures and multimedia testing were developed. This paper describes the lessons learned in the overall project and draws conclusions about the impact of multimedia systems on computer engineering education as well as methods and future opportunities for similar curriculum innovation projects.

关键词： multimedia systems Computer science education Educational institutions Educational technology Systems engineering education Computer aided instruction Pervasive computing Courseware DVD Information technology

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