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3rd International conference on Wireless Communications, networking and Mobile computing (WiCOM 2007)

作者： Chen Shuixian Ai Haojun Hu Ruimin Deng Guiping Wuhan Univ Natl Engn Res Ctr Multimedia Software Key Lab Multimedia & Network Commun Engn Comp Sch Wuhan 430072 Hubei Peoples R China

ISBN: (纸本)9781424413119

In this paper, we present a window switching algorithm employed in A VS (Audio Video coding Standard of China) generic audio coding. The algorithm - Energy and Unpredictability Measure based Window Switching Decision (ENUPM-WSD) - achieves high performance to complexity ratio by taking the advantages of both the low complexity 0 energy based decision in time domain and the high accuracy of unpredictability based decision in frequency domain. It significantly improves encoded audio quality, especially those with large transient portions, while preserves low average computational complexity in A VS generic audio encoder. Due to the merits, it is accepted as a recommendation module of the A VS audio standard.

关键词： window switching transient detection audio coding IntMDCT AVS audio

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GRAMS - A DISTRIBUTED multimedia SERVICE SYSTEM

GRAMS - A DISTRIBUTED MULTIMEDIA SERVICE SYSTEM

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conference on High-Speed Network and multimedia computing

作者： HUI, JY ZHANG, JB RUTGERS STATE UNIV DEPT ECEPISCATAWAYNJ 08855

ISBN: (纸本)0819414832

This paper is on the design and implementation of GRAMS (Gopher-style Real-time ATM multimedia Services), a multimedia system designed for a star configuration ATM LAN with the central server providing multimedia services to multiple users in real-time. It is also the initial step towards and the essential part of a distributed multimedia system over larger area networks.

关键词： multimedia Video Asynchronous transfer mode Distributed computing Control systems Image transmission Local area networks Switches Telecommunications Stars

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PERFORMANCE ANALYSIS OF WiFi/WiMAX VERTICAL HANDOVER BASED ON MEDIA INDEPENDENT HANDOVER

PERFORMANCE ANALYSIS OF WiFi/WiMAX VERTICAL HANDOVER BASED O...

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International conference on multimedia computing and Systems (ICMCS)

作者： Benkaouz, Yahya Angoma, Blaise Erradi, Mohammed Univ Mohammed V Souissi Networking & Distributed Syst Res Grp Lab AlKhawarizmi ENSIAS Rabat Morocco

ISBN: (纸本)9781467315203

Currently, there are several wireless networks deployed around the world. Examples include cellular networks, metropolitan area networks and wireless local area networks. Given the heterogeneity of the existing network technologies, the diversity of mobile applications, and user requirements, ensuring service continuity for a mobile user when changing different access network becomes a mandatory aspect. The aim of this work is to study and analyse a solution based on the IEEE802.21 standard, to enable interoperability between different networks. The assessment takes place in a context of mobility between WiFi and WiMAX networks. The network simulator NS2 is used during this study.

关键词： Vertical Handover IEEE 802.21 MIH QoS WiFi WiMAX NS2

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Proof of Retrieval and Ownership for Secure Fuzzy Deduplication of multimedia Data

Proof of Retrieval and Ownership for Secure Fuzzy Deduplicat...

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International conference on computing, Analytics and networking (ICCAN)

作者： Bini, S. Preetha Abirami, S. Anna Univ Coll Engn Dept Informat Sci & Technol Chennai Tamil Nadu India

ISBN: (纸本)9789811078712;9789811078705

With explosive growth of digital data and users wanting to outsource the data, there is great need for securely storing the data and utilization of storage space. Data deduplication eliminates redundant data from the storage and, thereby reducing the backup window, improves the efficiency of storage space and utilization of network bandwidth. multimedia data such as images and videos are a good choice for deduplication, as it is one of the most frequent shared types of data found on data storage. A conventional secure deduplication employs exact data deduplication which is too rigid for multimedia data. Perceptually similar data maintain human visual perception and consume a lot of storage space. The proposed approach provides a framework for secure fuzzy deduplication for multimedia data and further strengthens the security by integrating proof of retrieval and proof of ownership protocols.

关键词： multimedia data deduplication Proof of retrieval Proof of ownership

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multimedia Delivery Mechanism Framework for Smart Devices based on Mega Data Center and Micro Data Center in PMIPv6 Environment

Multimedia Delivery Mechanism Framework for Smart Devices ba...

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International conference on Information networking (ICOIN)

作者： Alsaffar, Aymen Abdullah Huh, Eui-Nam Kyung Hee Univ Dept Comp Engn Suwon South Korea

ISBN: (纸本)9781479983421

Now days, big data (e.g. multimedia content, document, data in social network, etc) is growing fast and requiring more big storage area which is capable to process all that data efficiently in short time as well as having efficient delivery system to deliver that data to diversity of devices when they access the internet anytime from anywhere.

关键词： mega data center micro data center pmipv6 smart devices big data cloud computing

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A link adaptation strategy for QoS support in IEEE 802.11 e-based WLANs

A link adaptation strategy for QoS support in IEEE 802.11 e-...

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IEEE Wireless Communications and networking conference

作者： Bandinelli, M Chiti, F Fantacci, R Tarchi, D Vannuccini, G Univ Florence Dept Elect & Telecommun I-50139 Florence Italy

ISBN: (纸本)0780389662

Wireless Local Area Networks represent one of the most interesting technological improvement in the last period. In a couple of years, a lot of people use WLAN commonly just to connect to the internet or for e-mail downloading. Besides, the WLANs do not offer at the moment a satisfactory QoS support for multimedia traffic. The aims of the IEEE 802.11e standard is to develop some schemes for supporting multimedia traffic in an in-home environment. On the other hand, in the last years the Link Adaptation has gained a lot of attention due to its improvement to the channel occupancy and capacity optimization. In this paper a Link Adaptation algorithm suitable for using in a WLAN, based on the IEEE 802.11e draft, with QoS support is proposed.

关键词： quality of service IEEE standards wireless LAN indoor radio channel capacity optimisation multimedia communication mobile computing access protocols telecommunication traffic link adaptation QoS support MAC protocol WLAN in-home environment channel occupancy capacity optimization wireless local area networks Internet e-mail downloading multimedia traffic IEEE 802.11e standard wireless local area network (WLAN) channel occupancy Quality of service indoor radio telecommunication traffic Mobile computing Channel capacity Internets IEEE Standards

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Comparative Analysis of Ad Hoc Networks Routing Protocols for multimedia Streaming

Comparative Analysis of Ad Hoc Networks Routing Protocols fo...

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International conference on multimedia computing and Systems

作者： Jamali, Abdellah Naja, Najib El Ouadghiri, Driss Hassan II Univ FSTM Dept Comp Sci Mohammadia Morocco Hassan II Univ INPT Dept Comp Sci Mohammadia Morocco Moulay Ismail Univ Fac Sci Dept Math & Comp Sci Meknes Morocco

ISBN: (纸本)9781424437566

recently, multimedia becomes increasingly popular for the users of ad hoc networks. To support multimedia and real-time application the study of QoS issues in MANETs is essential. MANETs can provide efficiently multimedia users with the required mobility. Development in multimedia and ad hoc networking has spurred rapidly growing research interested in multimedia delivery over ad hoc networks. Designing ad hoc networks which support multimedia applications is considered as a hard task. In this article, we present a labor that demonstrate that ad hoc networks support video streaming and present the analysis done by OPNET environment. We will talk in this article about routing protocols [12] in ad hoc networks used in multimedia and real time application and also review the QoS. Using simulation we conclude with the comparative Analysis of Ad Hoc networks routing protocols (AODV, DSR, OLSR, TORA, and GRP) for multimedia Streaming. The result of simulations already done demonstrate that in ad hoc networks we have good quality of video streaming.

关键词： Ad hoc Networks Routing Protocols Network Simulations. IEEE 802.11 multimedia

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The city is connections: Seoul as an urban network

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multimedia SYSTEMS 2010年第1期16卷 75-84页

作者： Choi, Jaz Hee-jeong Queensland Univ Technol Kelvin Grove Qld Australia

With the rise of ubiquitous computing in recent years, concepts of spatiality have become a significant topic of discussion in design and development of multimedia systems. This article investigates spatial practices at the intersection of youth, technology, and urban space in Seoul, and examines what the author calls 'transyouth': in the South Korean context, these people are between the ages of 18 and 24, situated on the delicate border between digital natives and immigrants in Prensky's [46] terms. In the first section, the article sets out the technosocial environment of contemporary Seoul. This is followed by a discussion of social networking processes derived from semi-structured interviews conducted in 2007-2008 with Seoul transyouth about their 'lived experiences of the city.' Interviewees reported how they interact to play, work, and live with and within the city's unique environment. The article develops a theme of how technosocial convergence (re)creates urban environments and argues for a need to consider such user-driven spatial recreation in designing cities as (ubiquitous) urban networks in recognition of its changing technosocial contours of connections. This is explored in three spaces of different scales: Cyworld as an online social networking space;cocoon housing-a form of individual residential space which is growing rapidly in many Korean cities-as a private living space;and ubiquitous City as the future macro-space of Seoul.

关键词： Ubiquitous technology Seoul Social networking Cyworld u-City Cocoon housing Urban informatics

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Consistent global checkpoints in multimedia network systems 15

Consistent global checkpoints in multimedia network systems

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15th International conference on Information networking (ICON-15)

作者： Hiraga, K Higaki, H Tokyo Denki Univ Dept Comp & Syst Engn Tokyo 101 Japan

ISBN: (纸本)0769509525

To achieve a fault-tolerant distributed systems, checkpoint-recovery has been researched and many protocols have been designed. A global checkpoint taken by the protocols have to be consistent. For conventional data communication network, a global checkpoint is defined consistent if there is neither orphan nor lost message. For a multimedia communication network, there are different requirements such as large-size massages, lime-constrained failure free execution and allowance of certain amount of lost packers. This paper proposes a new criteria of consistent global checkpoints for supporting multimedia communication network. in addition, a checkpoint protocol with QoS based consistency is designed and applied to MPEG-2 data transmission.

关键词： Communication channels Communication networks Computer networks Data communication Distributed computing Fault tolerant systems Intelligent networks multimedia communication multimedia systems Protocols

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An Ontology-based Semantic Service Markup for Content-Centric networking

An Ontology-based Semantic Service Markup for Content-Centri...

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13th IEEE International conference on Services computing (SCC)

作者： Huang, Yuze Huang, Jiwei Wu, Budan Yao, Tianxiang He, Shuqing Chen, Junhang Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China

ISBN: (纸本)9781509026289

With the rapid development of Internet technology, a new architecture named Content-Centric networking (CCN) has emerged recently. With powerful abilities of data caching and multicast, it has been increasingly popular especially for multimedia applications. However, service markup, in-network caching and routing are not inherently addressed in CCN. In this paper, we make an attempt at filling this gap by designing an ontology-based semantic service markup for CCN. Two components which are Service Identifier (SID) and Service Behavior Description (SBD) are presented in order to decouple the service entity with its original physical location, making it possible for service discovery and caching in CCN environments. Detailed designs are introduced, and a case study of an online multimedia conference system is presented to validate the effectiveness of our approach.

关键词： Ontology Semantic Service markup Content-Centric networking

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