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

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Analysis of Next Generation Mobile Services Based on Scenario Decomposition

Analysis of Next Generation Mobile Services Based on Scenari...

引用

IEEE conference on Vehicular Technology (VTC)

作者： Donsung Oh Seungwan Ryu Dongchun Shin Jinbae Kim Mobile Telecommunications Research Division Electronics and Telecommunications Research Institute South Korea Department of Information Systems Chung-Ang University South Korea Department of Computer&Information Anyang Technical College South Korea

In this paper, we propose a service analysis framework for eliciting key service functionalities and core technologies when various future mobile service scenarios are given. The proposed analysis framework, called scenario based service analysis process (2SAP), consists of 4 sequential analysis steps, a scenario transformation, a scenario decomposition, an analysis of functions for each situation, and an elicitation of service functionalities. We then propose business model creation methodology consisting of four consecutive development processes, service elicitation, elicitation of participants, roles of participants and value distribution using analysis results of 2SAP approach. Finally, we propose three types of next generation mobile business models, direct management model, platform rental model, and brokerage model, based on roles and activities of participants.

关键词： Mobile communication Mobile computing Sequential analysis Digital multimedia broadcasting multimedia systems Information analysis Information systems Telecommunication computing Educational institutions Next generation networking

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VideoMsg: A Wireless Video Distribution System

VideoMsg: A Wireless Video Distribution System

引用

International conference on Wireless and Mobile Communications (ICWMS 2006)

作者： Kavi Kumar Khedo Denis Leung Pah Hang Faculty of Engineering University of Mauritius Reduit Mauritius

One of the key technological challenges to advance our knowledge-based society is the development of mobile multimedia communication systems and networks. With rapid advances in wireless packet networking technology, it is becoming possible to provide mobile users not only with data, voice, but also with video communication services. Many emerging mobile applications require the playback of video on the mobile hosts, and today's wireless networks are getting ready to provide sufficient bandwidth for support of compressed video transmission. With the increase in the bandwidth of wireless channels and the computing power of the mobile devices, it is expected that video service will be offered for wireless networks in the near future. In this paper we are especially interested in the issue of wireless video multicast, in which there may be hundreds and thousands of mobile hosts receiving the same video from one sender. Reliable video distribution over WLANs is still a challenging problem to solve. Transport of video content is very sensitive to bandwidth variability, delay jitter, packet error rates and types of packets in which errors occur. We present VideoMsg an audio-video distribution system over WLANs which provides the best combination of technologies for the transmission of video information to heterogeneous mobile users.

关键词： Video compression Bandwidth Wireless networks multimedia communication multimedia systems Mobile communication Computer networks Mobile computing Wireless sensor networks Delay

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Mobile Delivery Server (MDS) A Solution for Resolving Problems and Limitations in Mobile E-Learning Scenarios

Mobile Delivery Server (MDS) A Solution for Resolving Proble...

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International conference on Systems and International conference on Mobile Communications and Learning Technologies, (ICN/ICONS/MCL) International conference on networking

作者： D. Averberg J. Boppert Kai Holzweibig University of Paderborn Institute of Computer Science Fürstenallee Paderborn Germany

Traditional e-learning scenarios are based on a client/ server architecture and are not primarily designed for mobile scenarios. To offer e-learning in mobile scenarios, difficult technical challenges involving platform heterogeneity, wireless communication protocols, screen resolution and other usability matters must be dealt with. Ultimately, e-learning objects have to be dynamically converted and customized according to the target platform. This applies to multimedia content, as well as to the native format (e.g. XML) in which the content is stored. The "Mobile Delivery Server" (MDS) is our advanced software approach to resolve some of the problems and limitations described above. The MDS introduces a new middle layer service for the technical needs of mobile e-learning scenarios. The MDS also provides compatibility of learning objects with a broad variety of mobile clients and allows the distribution of platform dependent players.

关键词： Electronic learning Personal digital assistants Mobile computing Mobile communication Displays Feedback Educational institutions Mobile handsets Games Education

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Enhanced PCF Protocols for Real-time multimedia Services over 802.11 Wireless Networks

Enhanced PCF Protocols for Real-time Multimedia Services ove...

引用

International conference on Distributed computing Systems Workshop

作者： Ming-Chuan Hsu Yaw-Chung Chen Department of Computer Science National Chiao Tung University Hsinchu Taiwan

In wireless network environment, different traffic classes exhibit a variety of characteristics and service requirements [4,5,7], such as data rate, maximum tolerable packet error rate and delay bounds. Although IEEE 802.11e [9,10] addresses the QoS issues and classifies the traffic into four prioritized access categories, there is still no guarantee of real-time transmission service due to the lack of an effective coordinating mechanism [11] among contending clients and a satisfactory scheduling method for various delay-sensitive packets from multiple traffic flows. In this work, we propose a nearly complete polling list solution to IEEE 802.11 WLAN by enhancing the original PCF protocol with better demand assignment features. A flexible and fair polling list method among the various time bounds is investigated in the proposed scheme. The performance evaluation based on NS-2 network simulator [12,13] shows that our schemes are well suited for variable bit rate service in real-time multimedia applications.

关键词： Wireless application protocol Wireless networks Telecommunication traffic Wireless LAN Error analysis Disruption tolerant networking Delay effects Bit rate Access protocols Computer science

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Establishing an advanced Internetworking Research Laboratory at Dalhousie University

Establishing an advanced Internetworking Research Laboratory...

引用

Annual conference on Communication Networks and Services Research (CNSR)

作者： N. Aslam J. Ilow S.C. Sivakumar W. Robertson Dalhousie University Halifax NS Canada Sobey School of Business Saint Mary''s University Halifax NS Canada

networking, communications and computing research employ state-of-the-art infrastructure and facilities to develop and test next generation Internet applications including electronic education and electronic health. With this focus, the Internetworking Program at Dalhousie University has established an Advanced Internetworking Laboratory (AIL) research and development space in Atlantic Canada. The major aim of the AIL is to provide a comprehensive platform for collaborative academic-industry research into networking applications development. This paper identifies the key design metrics used in establishing the research laboratory infrastructure. In particular, the architecture of our research centric test bed is presented considering design objectives of all three stakeholders in this project: academics, industry and technology providers

关键词： Internetworking Laboratories Testing Communication system security Next generation networking Access protocols Privacy Collaboration Optical fiber networks multimedia systems

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Middleware for multimedia Streaming in a Heterogeneous Distributed Environment

Middleware for Multimedia Streaming in a Heterogeneous Distr...

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International conference on Advanced computing and Communications (ADCOM)

作者： K. Sridhar Department of Computer Science and Engineering College of Engineering Guindy Anna University Chennai India

Advanced, large-scale applications targeted for the next generation Internet are motivating advances in scalable and adaptive highspeed networks and middleware. This paper provides a framework and middleware for heterogeneous distributed applications. And also describes how they have been applied successfully in practice to improve the reusability and quality of software system. An application written in one language is capable of playing media files and giving a request to an intermediate server, which is written in another language. The communications between these two different languages are established by converting the requesting application in to intermediate form. Therefore the converted application seems to be same language application as Intermediate Server. Finally the intermediate server, streams the requested media file to the client from the servers group which are under the control of the intermediate server.

关键词： Streaming media Middleware Application software File servers Large-scale systems Next generation networking IP networks Adaptive systems Software systems Communication system control

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An XML-based multi-agent system to support an adaptive cultural heritage learning

An XML-based multi-agent system to support an adaptive cultu...

引用

International conference on Systems and International conference on Mobile Communications and Learning Technologies, (ICN/ICONS/MCL) International conference on networking

作者： N. Casalino A. D'Atri A. Garro P. Rullo D. Sacca D. Ursino LUISS University Rome Italy DEIS Dept University of Calabria Rende Italy Mathematics Dept University of Calabria Rende Italy ICAR-CNR Rende Italy DIMET Dept University of Reggio Calabria Italy

Mobile learning (m-learning) refers to the use of mobile and handheld IT devices in teaching and learning and it may currently be most useful as a support to cultural heritage learning by exploiting portable devices like smartphones, personal digital assistants (PDAs), e-books, tablet PCs and laptop computers. M-learning could bring important benefits to schools, assisting in education, supporting classroom teaching and enabling personal and group learning. This paper presents MX-Learn that extends X-Learn, a state-of-the-art XML-based, multi-agent system for supporting "user-device" adaptive elearning, with the aim of improving cultural heritage learning methods by the development of flexible and personalized scenario through innovative multimedia services.

关键词： Multiagent systems Cultural differences Personal digital assistants Mobile computing Education Portable computers Smart phones Personal communication networks Handheld computers Educational institutions

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A utility-based auction cooperation incentive mechanism in peer-to-peer networks

A utility-based auction cooperation incentive mechanism in p...

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2nd International Symposium on Network-Centric Ubiquitous Systems, NCUS 2006, 2nd International Workshop on Security in Ubiquitous computing Systems, SecUbiq 2006, 2nd International Workshop on RFID and Ubiquitous Sensor Networks, USN 2006, 1st International Workshop on Trustworthiness, Reliability and services in Ubiquitous and Sensor networks, TRUST 2006, 1st International Workshop on Embedded Software Optimization, ESO 2006 and 1st International Workshop on multimedia Solution and the Assurance in the Ubiquitous Information Systems, MSA 2006 held in conjunction with the IFIP International conference on Embedded and Ubiquitous computing, EUC 2006

作者： Cheng, Jiujun Li, Yuhong Jiao, Weiwei Jian, M.A. College of Electronics and Infromation Engineering TongJi University No. 4800 Cao An Road Shanghai201804 China State Key Laboratory of Networking and Switching Beijing University of Posts and Telecommunications Beijing100876 China NOKIA Research Center Beijing100013 China

ISBN: (纸本)3540368507

In P2P network, there are a considerable proportion of free riders, which contribute nothing or little to the P2P system but obtain resources from the system. In order to address this problem, we present a utility-based auction cooperation incentive mechanism in the P2P network. Our approach is that before communicating with destination peer, the source peer first demands peers to auction their utilities, and then select the maximum utility as its destination peer, and gives some benefit to it, at the same time, gives some punishment to the liars. By using this mechanism, the more the peers contribute to the system, the more utility the peers can obtain, and therefore, the more benefits the peers can gain from the system. The experiment results show that the incentive mechanism assures the justice of gaining benefits for different kinds of peers in the system, and hence, controls the free riders effectively, and improves the whole performance of the P2P network. © IFIP International Federation for Information Processing 2006.

关键词： Peer to peer networks

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Sensor networks for everyday use: the BL-Live experience

Sensor networks for everyday use: the BL-Live experience

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IEEE International conference on Sensor Networks, Ubiquitous, and Trustworthy computing

作者： Seng-Yong Lau Ting-Hao Chang Shu-Yu Hu Hsing-Jung Huang Lung-de Shyu Chui-Ming Chiu P. Huang Department of Electrical Engineering Graduate Institute of Networking and Multimedia National Taiwan University Taiwan

ISBN: (纸本)9780769525532;0769525539

With 250,000 NTD invested, 6 man power allocated, and 9 month time elapsed, we present BL-Live. The seemingly dumb, senseless BL Hall at National Taiwan University is transformed to an intelligent office building by a 30+ node sensor network. Two everyday services, Elevator Report and Smart Office, are implemented to better utilize the resources of the building and of the building residents. Our experience allows us to re-examine technical issues such as manufacturing cost, form factor, deployment, data communication, and energy efficiency. Many of the lessons we learn are not only surprising but also inspiring, which in turn leads us to think that more deployment experience and experience sharing are critical to the advances and commercialization of sensor networks

关键词： Intelligent sensors Elevators Wireless sensor networks Magnetic sensors Hardware Manufacturing Sensor systems Probes Accelerometers Intelligent networks

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8th International conference on Advanced Communication Technology (IEEE Cat. No.06EX1209C)

8th International Conference on Advanced Communication Techn...

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International conference on Advanced Communication Technology (ICACT)

The following topics were dealt with: CDMA; wireless communications; mobile communications; multimedia systems; Internet systems; next generation network technology; information security technology; RFID technology; USN technology; system engineering; software engineering; optical networking technology; broadband satellite; HAPS; IT service technology; telematics technology; digital home technology; digital broadcasting technology; ASP technology; WAS technology; P2P technology; CDN technology; XML technology; IPv6 technology; communication network topology; communication network planning; GRID technology; distributed computing technology; portable Internet; Internet telephony; network management; network operation; network maintenance; e-commerce; and m-commerce

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