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4th international Workshop on Mobile Agents for Telecommunication applications, MATA 2002

4th international Workshop on Mobile Agents for Telecommunication applications, MATA 2002

ISBN: (纸本)3540000216

The proceedings contain 28 papers. The special focus in this conference is on Agent architectures, Frameworks and Platforms. The topics include: Options for reusing agent conversations;multi-management schemes for MAF platforms;an architecture for negotiation with mobile agents;internet agents for effective collaboration;programming and executing telecommunication service logic with moorea reactive mobile agents;generic engineering approach for agent-based system development;an ecosystem-inspired mobile agent middleware for active network management;an enhanced mobility management mechanism for active access networks;an architecture for active network performance management based on intelligent agents;agent-based context-aware ad hoc communication;designing multimedia service agents for mobile users;a mobile agent-based framework for configurable sensor networks;evaluation of migration strategies for mobile agents in network routing;a hybrid approach to network performance monitoring based on mobile agents and corba;mobile agent distribution in a game-theoretic approach;anonymous communications for mobile agents;implementation of secure architectures for mobile agents in MARISM-A;quality of service management in ip networks using mobile agent technology;transparent QoS support of network applications using netlets;FipA-based QoS negotiator for nomadic agents;system and network management itineraries for mobile agents;four multi-agent architectures for intelligent network load management;automated management of ip networks through policy and mobile agents;facilitating agent messaging on PDAs;mobile agents for discovering and accessing services in nomadic environments and an extensible mobile-agent-based framework for coordinating distributed information retrieval applications.

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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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Assessing network readiness for ip telephony

Assessing network readiness for IP telephony

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IEEE international conference on Communications (ICC)

作者： M. Bearden L. Denby B. Karacali J. Meloche D.T. Stott Avaya Labs Research Basking Ridge NJ USA Avaya Labs Research NJ

ISBN: (纸本)0780374002

Networked multimedia applications require stringent real-time QoS guarantees. Successful deployment of such applications closely depends on the performance of the underlying data network. T he characteristics and the QoS requirements of these applications are different from traditional data applications. Hence, prior to deployment it is necessary to evaluate a network from a multimedia perspective. In this paper, we focus on ip Telephony and describe a framework for providing tools for ip Telephony readiness evaluation. This framework can be easily generalized to other multimedia applications. Our approach injects synthesized voice traffic and measures perceived end-to-end quality. We present a novel idea of relating voice quality metrics to the performance of data network devices. Following the proposed framework, we developed a prototype tool to evaluate a network and to identify problems, if any, prior to ip Telephony deployment. Our tool automatically discovers the topology of a given network, and collects and integrates network device performance and voice quality metrics. We describe the architecture of our tool and provide sample outputs from a network consisting of 129 devices.

关键词： Speech Quality of service Telephony Telecommunication traffic Network synthesis Prototypes Network topology Traffic control Predictive models ip networks

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End-to-end UMTS quality of service architecture for the support of real-time ip multimedia services in UMTS R5

End-to-end UMTS quality of service architecture for the supp...

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Third international conference on 3G Mobile Communication Technologies

作者： S. Leroy L. Bos J. De Vriendt Network Strategy Group Antwerp Belgium

3G promises to be an enabler for many new services: videoconferencing, interactive gaming, streaming, etc. Such applications are typically QoS (quality of service) sensitive. This requires new functionality in the UMTS QoS architecture. In 3GPP work on QoS is ongoing; the basic mechanisms are included in UMTS release 5, the more advanced features will be part of UMTS release 6. This document highlights UMTS QoS aspects. The main focus is on UMTS R5 as this release will introduce ip multimedia services. We clearly make the distinction between 3GPP stable decisions, topics under discussion within 3GPP, and the Alcatel position on the topics.

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Enabling JPEG2000 on 3G wireless mobiles through OMAP™ architecture

Enabling JPEG2000 on 3G wireless mobiles through OMAP™ arch...

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international conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Marc Peresse Karim Djafarian Jamil Chaoui Daniel Mazzocco Yves Masse European Wireless Terminal Business Unit Texas Instruments France

This paper describes how JPEG2000 still image compression codec will be enabled in the 3G wireless terminals thanks to the efficiency of TMS320C55xx DSP core embedded in the TI OMAP™. OMAP™ H/W architecture will be described, with an emphasis on how still image compression and decompression applications will benefit from this advanced architecture. The paper will also depict the advantages provided by OMAP™s DSP subsystem architecture for the Discrete Wavelet Transform (DWT), which is the most computation hungry JPEG2000 kernel. A final chapter will compare bit stream download time and decoding scenarios for compressed QVGA color images.

关键词： Streaming media Variable speed drives Image coding 3G mobile communication Image edge detection multimedia communication

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Design and implementation of QoS network controller for simple management of ip network to support multimedia services

Design and implementation of QoS network controller for simp...

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international conference on Communication Systems

作者： Sung Hei Kim Gil Young Choi Kyou Ho Lee Internet Technology Department Electronics and Telecommunications Research Institute South Korea

ISBN: (纸本)0780375106

The support of QoS in the ip network is important to provide real-time applications like voice and video. But, the method in which the network uses to distinguish a real-time application and managing those service is one of the problem in supporting QoS in the ip network. The DiffServ is an efficient method of providing QoS capability without putting much burden to the network. The DiffServ architecture defines services in form of service level agreement (SLA), which is an agreement from the customer and service provider requesting differentiated service for the traffic to/from certain nodes. This paper presents a simple and practical method to provide flow based QoS service dynamically in the ip networks. The QoS controller manages the ip network to provide information for the real-time applications. Thus, the network can use that information to provide the needed QoS treatment for the pertaining flow.

关键词： ip networks Internet telephony Quality of service Diffserv networks Web and internet services Streaming media Delay Switches Technology management Gas insulated transmission lines

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ip header and signalling compression for 3G systems

IP header and signalling compression for 3G systems

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Third international conference on 3G Mobile Communication Technologies

作者： M.A. West L.W. Conroy R.E. Hancock R. Price A.H. Surtees Siemens/Roke Manor Research Limited UK

ip header compression techniques have evolved to meet the challenges of cellular networks. The scope has also broadened. Solutions are being developed for voice traffic transport, Sip and protocols such as TCP, which covers the major traffic volumes. All of these standards are currently under development in accordance with the working group charter and IETT process. With these solutions, 2.5G and 3G networks will be a ubiquitous way of obtaining ip connectivity, even for multimedia applications. The integration of these techniques into the protocol architecture is being done within other standards activities, for example 3GPP. Many aspects of compression schemes (such as BNF grammars for specific content) have been left as implementation decisions, reflecting a principle of the ROHC group: to enable the deployment of sophisticated compression without standardising every aspect of their use.

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Design of the core modules for multimedia packet processing in a novel home gateway

Design of the core modules for multimedia packet processing ...

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international conference on Communication Systems

作者： Young-Choong Park Chan-su Yoon Kwang-mo Jung Sang-Won Min Korea Electronics and Technology Institute Sungnam Kyunggi South Korea Department of Electronic Communications Kwangwoon University Seoul South Korea

ISBN: (纸本)0780375106

Recently, there has been much effort in providing information technology into home appliances. Home network may link appliances, sensors, actuators, switches, controllers, and user interfaces to create novel applications and provide an infrastructure for multimedia distribution. However, there are various technologies of the home networking, which makes it difficult to give only one solution. Many developers and standardization organizations considers a home gateway as a good solution. In this paper, we propose a new architecture of a home gateway supporting various home network technologies such as IEEE1394, Bluetooth, LonWorks, wireless LAN, HPNA or implement Bluetooth technology using ip as a test model for our home gateway.

关键词： multimedia systems Home appliances Home automation Bluetooth Information technology Actuators Switches User interfaces Standardization Wireless LAN

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multimedia over ip for thin clients: Building a collaborative resource-sharing prototype

Multimedia over IP for thin clients: Building a collaborativ...

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2001 IEEE international conference on multimedia and Expo, ICME 2001

作者： Chen, J. Hou, G. Chen, Ming-Syan Philips Research East Asia Taipei Taiwan Electrical Engineering Department National Taiwan University Taipei Taiwan

ISBN: (纸本)0769511988

This paper describes the issues and the techniques of enabling multimedia applications with thin-client/server computing. A prototype of a video communication system based on H.323 family of ITU-T recommendations has been developed to demonstrate the efficient support to multimedia applications with a terminal server and thin clients in an ip-based thin-client computing environment. With the proposed architecture, a collaborative multi-user audio/video conference system is presented as an illustrative application. The collaborative multiuser audio/video conference system leverages the benefit of sharing common components among multiple conference terminals as well as increases their extensibility and ease of use. As a result, we can attain a balanced architecture that supports both centralized management of application softwares and distributed multimedia processing for I/O devices.

关键词： Internet protocols

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Internet distributed image information system

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INTEGRATED COMPUTER-AIDED ENGINEERING 2001年第3期8卷 205-214页

作者： Guédon, JP Parrein, B Normand, N IRCCyN Image & VideoCommun Team UMR 6597 Nantes France

A new ip multimedia distributed system is presented. The two main functionalities are error-resilience for image and video transmission and storage and distribution of partial information among several servers in order to use different Internet routes. The system is based on a redundant transform called the Mojette transform that projects the original information into different pieces. Our group has developed this transform for the last five years. The main theoretical results of the Mojette transform are recalled for the 2-D and 3-D cases. The transform is then used to break a data volume into several pieces and to transmit or store them with several levels of redundancy such that a receiver is able to reconstruct the original message by a subset of pieces despite erasures. The second main feature is to provide insufficient pieces onto a single server to avoid a network information theft whereas being able to use the redundancy located on other servers to rebuild the information after the network destruction of a server. The characteristics of this distributed system are exemplified. The relationships with duality of service and multiple description theory are analyzed and exemplified with the telemedecine case. Finally, a multiple description scheme with prioritized flows is defined and implemented. The Mojette operators and the resultant multimedia distributed architecture is valid both for any multimedia signals (image, video, voice) to be encoded and those already encoded and available as bit streams.

关键词： Mojette transform ip multimedia distributed system multiple description quality of service

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