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IEEE International Symposium on World of Wireless mobile and multimedia Networks (WoWMoM)

作者： Liam McNamara Salvatore Scellato Cecilia Mascolo Computer Laboratory University of Cambridge UK

As content that users access on their mobile devices becomes bulkier, opportunistic networking is becoming a potential complement to centralised and infrastructure based downloads. We study how users share items of mutual interest with each other with a simple model based on a `networked urn process'. We investigate the effect of different content sharing policies upon a multi-category set of items. We find that the process of sharing mutual interests inherently disproportionately reinforces category replication disparity, i.e., the most popular categories become proportionally even more numerous. These findings uncover a major hurdle in the creation of automatic opportunistic file sharing between users. Even if users altruistically sacrifice battery power and network resources to share content not relevant to them, overall, the system may not be able to fairly distribute items that belong to niche categories.

关键词： Color Libraries Image color analysis Laboratories Data models Computers Simulation

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OSGi Platform for UPnP Audiovisual Service Delivery

OSGi Platform for UPnP Audiovisual Service Delivery

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Workshop on Intelligent Solutions in Embedded systems

作者： Javier Martinez Natividad Martinez Madrid Ralf Seepold Departamento de Ingeniería Telemática Universidad Carlos III de Madrid Leganes Spain

ISBN: (纸本)9788489315471

There is continuously increasing number of devices available which support multimedia management and enable capabilities of interconnection beyond the borders of a Residential Gateway. This paper focuses on devices providing multimedia content (Media Server) and devices reproducing the contents (Media Renders). The objective is to discover, manage and use remote devices like local resources. The setup and configuration should be easy to manage for service providers and transparent for the end users that access to remote services. The paper presents a solution supporting devices implementing UPnP A v that are integrated into an OSGi platform implemented in a heterogeneous scenario with multiple devices and services.

关键词： multimedia systems Network servers Quality of service Protocols Home automation Web server mobile handsets Resource management Nonhomogeneous media DvD

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mobile learning through microblogging

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Procedia - Social and Behavioral Sciences 2011年 15卷 4-8页

作者： Carmen Holotescu Gabriela Grosseck Politechnica University 2 Bd. V. Parvan 300222 Timisoara Romania West University of Timisoara 4 Bd. V. Parvan 300223 Timisoara Romania

In the context in which the new frontier of Web 2.0 is marked out by the use of mobile devices anywhere, anytime, by anyone and anything, our paper aims at valorizing the mobility parameters of the *** platform in order to integrate the microblogging technology in higher education, for the purpose of increasing knowledge and learning in authentic mobile learning environments. As an innovation for the mobile learning through microblogging, we mention the following elements: ● on a technological level: localize / join mobile groups, access content and OERs, share opinions, work collaboratively on multimedia objects, participate in polls / quizzes, receive / send updates via SMS, create / manage mobile PLEs, recover password via SMS; ● on a pedagogical level: develop multimedia educational resources / learning objects by using mobile technologies specific for different subject areas to be teached with microblogging. Thus, the aim of our experiment is not only to provide a general overview / a framework for using microblogging through mobile technologies, but also a way to enhance teaching and learning in formal university courses and to present mobile microblogging learning benefits, opportunities, limits and risks.

关键词： Microblogging mobile learning Higher education

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Enabling Cellular Device to Device Data Exchange on WISDOM 5G by Actuating Cooperative Communication Based on SMNAT

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INTERNATIONAL JOURNAL OF INTERDISCIPLINARY TELECOMMUNICATIONS AND NETWORKING 2014年第3期6卷 37-59页

作者： Sanyal, Rajarshi Prasad, Ramjee Belgacom Int Brussels Belgium Aalborg Univ Aalborg Denmark

The key attributes envisioned for LTE-Advanced pertaining to 5G Networks are ubiquitous presence, device convergence, massive machine connectivity, ultrahigh throughput and moderated carbon footprint of the network and the user equipment actuated by offloading cellular data traffic and by enabling device to device communication. The present method of mobility management and addressing as the authors have foreseen in LTE Advanced can solve some issues of cellular traffic backhaul towards the access and core network by actuating a local breakout and enabling communication directly between devices. But most of the approaches look forward towards an enhancement in the radio resource allocation process and prone to interference. Besides, most of these proposals delve in Device to Device (D2D) mode initiation from the device end, but no research has so far addressed the concept of a network initiated D2D process, which can optimise the channel utilisation and network operations further. In their attempt to knot these loose ends together, the auhtors furnish the concept of WISDOM (Wireless Innovative System for Dynamic Operating Mega communications) (Badoi Cornelia-I., Prasad N., Croitoru v., Prasad R., 2011) ( Prasad R., June 2013) (Prasad R., December 2013) and SMNAT (Sanyal, R., Cianca, E. and Prasad, R., 2012a) (Sanyal, R., Cianca, E. and Prasad, R., 2012b) (Sanyal, R., Cianca, E. and Prasad, R., 2012c) (Sanyal, R., Cianca, E. and Prasad, R., 2012d) (Sanyal, R., Cianca, E. and Prasad, R. (2011a). Further, the authors explore how SMNAT (Smart mobile Network access Topology) can engage with WISDOM in cooperative communication to actuate D2D communication initiated by the device or the network. WISDOM is an architectural concept for 5G Networks based on cognitive radio approach. The cognition, sustained by adaptation techniques, is a way to provide communication, convergence, connectivity, co-operation, and content, anytime and anywhere. Though D2D communication using a d

关键词： Cognitive Radio Cooperative Communication D2D Server Generalized Frequency Division Multiplexing (GFDM) IP multimedia System Mobility Management Entity (MME) Rich Communication Services (RCS) Service Centralisation and Continuity Application Server (SCCAS) SMNAT WISDOM

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The UCT IMS IPTv Initiative

The UCT IMS IPTV Initiative

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International Conference on Next Generation mobile Applications, Services and Technologies (NGMAST)

作者： Richard Spiers Robert Marston Richard Good Neco ventura University of Cape Town Rondebosch South Africa

As revenues from voice services continue to fall, telecommunication operators have begun to develop and acquire new services in an attempt to generate new revenue streams and to avoid losing customers to third party service providers. One such service that many, if not all, operators are investigating is Internet Protocol Television (IPTv). IPTv provides broadcast television channels as well as video on Demand (voD) content to subscribers, delivering the video content using the Internet Protocol (IP). The UCT Advanced IPTv v2.0 system is an open source implementation of an IPTv system based on ETSI TISPAN standards. The proposed system also incorporates multimedia content adaptation methods in order to adapt video to meet varying client terminal devices and access network characteristics. This paper describes the history of the project followed by the relevant ETSI TISPAN standards. It then goes on to discuss the software architecture of the developed system and provides results of several transcoding tests.

关键词： IPTv video on demand Telecommunication standards Streaming media multimedia communication Tv broadcasting Internet access protocols multimedia systems History

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Frontiers of wireless and mobile communications

Frontiers of wireless and mobile communications

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作者： Raychaudhuri, Dipankar Mandayam, Narayan B. WINLAB Rutgers University Technology Centre of NJ North Brunswick NJ 08902 United States

The field of wireless and mobile communication has a remarkable history that spans over a century of technology innovations from Marconi's first transatlantic transmission in 1899 to the worldwide adoption of cellular mobile services by over four billion people today. Wireless has become one of the most pervasive core technology enablers for a diverse variety of computing and communications applications ranging from third-generation/fourth-generation (3G/4G) cellular devices, broadband access, indoor WiFi networks, vehicle-to-vehicle (v2v) systems to embedded sensor and radio-frequency identification (RFID) applications. This has led to an accelerating pace of research and development in the wireless area with the promise of significant new breakthroughs over the next decade and beyond. This paper provides a perspective of some of the research frontiers of wireless and mobile communications, identifying early stage key technologies of strategic importance and the new applications that they will enable. Specific new radio technologies discussed include dynamic spectrum access (DSA), white space, cognitive software-defined radio (SDR), antenna beam steering and multiple-input-multiple- output (MIMO), 60-GHz transmission, and cooperative communications. Taken together, these approaches have the potential for dramatically increasing radio link speeds from current megabit per second rates to gigabit per second, while also improving radio system capacity and spectrum efficiency significantly. The paper also introduces a number of emerging wireless/mobile networking concepts including multihoming, ad hoc and multihop mesh, delay-tolerant routing, and mobile content caching, providing a discussion of the protocol capabilities needed to support each of these usage scenarios. In conclusion, the paper briefly discusses the impact of these wireless technologies and networking techniques on the design of emerging audiovisual and multimedia applications as they migrate to mobile

关键词： Cognitive radio

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A DLNA framework for NEXT GEN mobile terminals connecting IMS Networks for human-centered Digital Home Environment

A DLNA framework for NEXT GEN mobile terminals connecting IM...

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International Conference on IP multimedia Subsystem Architecture and Applications

作者： S. vijay Anand CTOs Office SASKEN Communication Technologies Limited Bangalore India

ISBN: (纸本)9781424426713

In this paper, the author describes the design and implementation of a LDNA (Digtal Living Network Alliance) Framework for Handheld devices. DLNA has developed guidelines for interoperability among home devices enabling a multitude of usage scenarios for sharing digital content such as A v (Audio visual), Photo, and Audio. The proposed DLNA (Digital Living Network Alliance) Client Framework handles multiple services like video and multimedia services in Smart Home networks simultaneously. With this new DLNA framework, the home users can choose various services dynamically and use them with out any complicated pre-configuration with the Home IMS gateway (HIGA). The framework provides smooth data transfer switching in home network between Cellular and Wi-fi/Bluetooth networks to enhance mobility based on user/application preferences. The DLNA Framework also provides QoS measurement and monitoring functionality for multimedia services, which enables users to benefit from high throughput and maintains session continuity during selection of different access networks. Apart from these features, the DLNA Framework provides access to device access protocols like UPnP to facilitate the management of home devices.

关键词： Joining processes multimedia systems Handheld computers Guidelines video sharing Smart homes Home automation Cellular networks Bluetooth Monitoring

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Energy-Efficient Multicasting of Multiview 3D videos to mobile devices

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ACM TRANSACTIONS ON multimedia COMPUTING COMMUNICATIONS AND APPLICATIONS 2012年第3期8卷 45-45页

作者： Hamza, Ahmed Hefeeda, Mohamed Simon Fraser Univ 102nd Ave Survey BC V3T 0A3 Canada

Multicasting multiple video streams over wireless broadband access networks enables the delivery of multimedia content to large-scale user communities in a cost-efficient manner. Three dimensional (3D) videos are the next natural step in the evolution of digital media technologies. In order to provide 3D perception, 3D video streams contain one or more views that greatly increase their bandwidth requirements. Due to the limited channel capacity and variable bit rate of the videos, multicasting multiple 3D videos over wireless broadband networks is a challenging problem. In this article, we consider a 4G wireless access network in which a number of 3D videos represented in two-view plus depth format and encoded using scalable video coders are multicast. We formulate the optimal 3D video multicasting problem to maximize the quality of rendered virtual views on the receivers' displays. We show that this problem is NP-complete and present a polynomial time approximation algorithm to solve it. We then extend the proposed algorithm to efficiently schedule the transmission of the chosen substreams from each video in order to maximize the power saving on the mobile receivers. Our simulation-based experimental results show that our algorithm provides solutions that are within 0.3 dB of the optimal solutions while satisfying real-time requirements of multicast systems. In addition, our algorithm results in an average power consumption reduction of 86%.

关键词： Design multimedia networking energy saving wireless networks 3D video WiMAX LTE

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Seamless annotation and enrichment of mobile captured video streams in real-time

Seamless annotation and enrichment of mobile captured video ...

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IEEE International Conference on multimedia and Expo (ICME)

作者： Motaz El-Saban Xin-Jing Wang Noran Hasan Mahmoud Bassiouny Mahmoud Refaat Cairo Microsoft Innovation Lab Egypt Microsoft Research Asia China Cairo Microsoft Innovation Lab Cairo Egypt Computer and Systems Engineering Department Faculty of Engineering Alexandria University Egypt

mobile phones are becoming more and more ubiquitous with a large number of these devices having image/video capturing capabilities, connection capabilities and built-in rich sensory. This has encouraged the common user to capture more image/video content than ever before. However, this has created two interrelated problems: 1) while capturing some scene the user may want to get more information about it to make a decision (e.g. a buying one) without painful textual input on these mobile devices and while accounting for multiple meanings associated with a single image, as an image is worth a thousand words and 2) videos captured cannot be easily searched afterwards and hence forgotten due to the lack of proper indexing techniques. In this paper, we are presenting a system addressing the above two problems through a single solution by providing users with real-time automatically generated tags of their currently captured videos. The user can select/deselect from the automatic tags, thus tags can serve as visual query suggestions helping bridging the user's query intent. This same set of tags will be stored with the video for enabling easy content access afterwards.

关键词： Eye protection mobile communication Streaming media

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Modeling UI agents for public environments to enhance the v2oIP embedded ATM access point services

Modeling UI agents for public environments to enhance the V2...

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International Conference on Advanced Communication Technology (ICACT)

作者： v.C. Joseph Dong-Myoung Seol Eun-Ryoung Lee Jiyoung Kwak Jang-Hee Yu Div. of Embedded Syst. Res. ETRI Embedded Systems Research Division Electronics and Telecommunications Research Institute South Korea Embedded Systems Research Division ETRI

Usage of automated teller machines (ATMs) is confined to financial transactions in the present world scenario. multimedia usage for finance is inhibited by several factors including security and lack of flexible user interface models to proliferate the public environment usage criterion. Financial services become more attractive when the user obtains a plurality of services over existing access methodology using personalized web pages, animated and other customized mobile agents to mimic the usage patterns. We present an intelligent and novel approach to facilitate and propel financial and non-financial services for public environments that seamlessly integrate wireless multimedia applications and digital content over the financial services network. Our design is based on the embedded ATM access point that uses secure software architecture with v2oIP stack to facilitate the usage and creation of a multitude of new services. Dynamic and adaptive context-sensitive GUI with animated icons forms the trend for the next generation of compact ubiquitous devices that proliferate the home network and public environment

关键词： multimedia systems Animation Finance User interfaces Web pages mobile agents Intelligent networks Propulsion Communication system security Application software

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