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IEEE International Symposium on A World of Wireless, mobile and multimedia Networks

作者： McNamara, Liam Scellato, Salvatore Mascolo, Cecilia Computer Laboratory University of Cambridge United Kingdom

ISBN: (纸本)9781457703515

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. © 2011 IEEE.

关键词： Color Computers Data models Image color analysis Laboratories Libraries Simulation automatic opportunistic file sharing content sharing policies diversity decay mobile communication mobile devices multimedia communication multimedia traffic network resources networked urn process opportunistic content sharing systems opportunistic networking telecommunication traffic

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Personal virtual multimedia library (PvML) in a converged network

Personal virtual multimedia library (PVML) in a converged ne...

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2011 2nd International Conference on Wireless Communication, vehicular Technology, Information Theory and Aerospace and Electronic systems Technology, Wireless vITAE 2011

作者： Dhanapal, Karthikeyan Balaji Somasundara, Arun Agrahara Paul, Sanjoy Infosys Technologies Limited 44 Electronics City Bangalore 560100 India

ISBN: (纸本)9781457707872

There is lot of personal multimedia content (audio, image, video) being generated due to the ease of generating such content with the everyday devices, such as, mobile phones and also due to the plummeting cost of media-generating devices, such as, digital cameras which have made them ubiquitously available. Almost everyone wants to share his/her personal content with family and friends. In addition to this sharing, there needs to be proper mechanism of accessing this content by technically non-savvy people. This is more so a requirement for the masses in an emerging economy like India where broadband access is almost non-existent, and for the elderly people everywhere, who use Tv as their main device for accessing media. We present a system, which sits in the Internet cloud, simplifies content upload and organization, and allows seamless sharing and access of the multimedia content across networks and devices. Most importantly, the content can be accessed from any one of the 3 types of screens: web/PC, mobile, Tv. The system hides all the complexity of the storage, formatting, and organization of the media content from the users. Performance evaluation of the system shows that it is robust against variations of bandwidth, delay and jitter in a mobile wireless network and is reasonably scalable with the increase in the number of users. © 2011 IEEE.

关键词： Digital devices

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New Trends in Over the Top Media Service (OTT) Web User Behaviour Analysis and Unethical User Prediction

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mobile NETWORKS & APPLICATIONS 2023年 1-17页

作者： Nguyen, Ha Huy Cuong Grzonka, Daniel Khoa, Bui Thanh Sagar, K. v. Daya Abbasi, Irshad Ahmed Mahaveerakannan, R. Alkhayyat, Ahmed Univ Danang Da Nang Vietnam Cracow Univ Technol Krakow Poland Ind Univ Ho Chi Minh City Ho Chi Minh Vietnam Koneru Lakshmaiah Educ Fdn Dept Elect & Commun Engn Vaddeswaram Andhra Prades India Belqarn Univ Bisha Fac Sci & Arts Dept Comp Sci Sabt Al Alaya 61985 Saudi Arabia Saveetha Inst Med & Tech Sci Saveetha Sch Engn Dept Comp Sci & Engn Chennai Tamil Nadu India Islamic Univ Coll Tech Engn Najaf Iraq

This research shows unethical user prediction on the peer-to-peer content delivery network against the Over-The-Top media service (OTT). The Web User Behaviour Analysis and unethical user prediction are performed based on the OTT multimedia service platform. The Analysis and unethical user prediction contain the four stages of processing. Firstly "Peer to Peer content Delivery Network" is used to provide services and ideal resources (User). It uses ResourceCache: an optimized algorithm for giving efficient CDN-based over-the-top video streaming services. Secondly, "Selective destination Bitrate-adaptivity" is employed to provide the OTT Service (devices). It utilizes bitrate adaptivity to improve the adaptivity of Over-The-Top Television systems. Thirdly, the "Network Functions virtualization (NFv)" enabled multi-access edge data centers to embed to maintain sufficient data about users and their respective devices. It uses the QoE-based Load Balancing of OTT video content in CDN networks to improve the QoE of OTT multimedia services in wireless scenarios. Finally, the efficient "Review of Recommender System" are taken to collect feedback about services and subscription. It is most useful to check unethical user access. The performance result of the proposed system conceives the analysis based on web users' behavior prediction accuracy of 76%, Average precision of 67.8%, Average recall of 74.2%, and Average f1-measures of 85.9% against the performance of unethical user prediction.

关键词： Bitrate-adaptivity content delivery network Network functions virtualization Over-the-top media service Quality of experience and user prediction

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Resource-aware hybrid scheduling algorithm in heterogeneous distributed computing

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FUTURE GENERATION COMPUTER systems-THE INTERNATIONAL JOURNAL OF ESCIENCE 2015年 51卷 61-71页

作者： vasile, Mihaela-Andreea Pop, Florin Tutueanu, Radu-Ioan Cristea, valentin Kolodziej, Joanna Univ Politehn Bucuresti Fac Automat Control & Comp Bucharest Romania Cracow Univ Technol Inst Comp Sci PL-30084 Krakow Poland

Today, almost everyone is connected to the Internet and uses different Cloud solutions to store, deliver and process data. Cloud computing assembles large networks of virtualized services such as hardware and software resources. The new era in which ICT penetrated almost all domains (healthcare, aged-care, social assistance, surveillance, education, etc.) creates the need of new multimedia content-driven applications. These applications generate huge amount of data, require gathering, processing and then aggregation in a fault-tolerant, reliable and secure heterogeneous distributed system created by a mixture of Cloud systems (public/private), mobile devices networks, desktop-based clusters, etc. In this context dynamic resource provisioning for Big Data application scheduling became a challenge in modern systems. We proposed a resource-aware hybrid scheduling algorithm for different types of application: batch jobs and workflows. The proposed algorithm considers hierarchical clustering of the available resources into groups in the allocation phase. Task execution is performed in two phases: in the first, tasks are assigned to groups of resources and in the second phase, a classical scheduling algorithm is used for each group of resources. The proposed algorithm is suitable for Heterogeneous Distributed Computing, especially for modern High-Performance Computing (HPC) systems in which applications are modeled with various requirements (both 10 and computational intensive), with accent on data from multimedia applications. We evaluate their performance in a realistic setting of CloudSim tool with respect to load-balancing, cost savings, dependency assurance for workflows and computational efficiency, and investigate the computing methods of these performance metrics at runtime. (C) 2014 Elsevier B.v. All rights reserved.

关键词： Resource provisioning Task scheduling Clustering Heterogeneous distributed computing multimedia content-driven applications

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SPIDER: Sizing-Priority-Based Application-Driven Memory for mobile video Applications

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IEEE TRANSACTIONS ON vERY LARGE SCALE INTEGRATION (vLSI) systems 2017年第9期25卷 2625-2634页

作者： Gong, Na Pourbakhsh, Seyed Alireza Chen, Xiaowei Wang, Xin Chen, Dongliang Wang, Jinhui North Dakota State Univ Dept Elect & Comp Engn Fargo ND 58108 USA

Recently, mobile devices such as smartphones and tablets have become the most important medium for delivering internet traffic, especially multimedia content, to end users. However, mobile embedded memory incurs large power consumption owing to the highly frequent access and extensive computation. This paper presents an sizing-priority-based application-driven memory ( SPIDER) design methodology for low-power mobile video applications. We investigate the size dependent memory failure characteristics and effectively reduce the memory failure rate with low area overhead. Also, we develop a model for the influence of the memory failure on video output, connecting the hardware design process and application requirement. Based on this, we design the SPIDER algorithms for area-priority and quality-priority mobile video applications. During this process, we also consider the contribution of both Luma and Chroma to output quality, avoiding over-optimization issue. We also develop a hardware-based python-assisted SPIDER simulator to apply our proposed design in one leading edge video compression system, the H.264 decoder. Our simulation results in 45-nm CMOS technology show that SPIDER supports mobile videos successfully as voltage downs to 500 mv from 1 v, enabling over 70% power savings in memory arrays.

关键词： Application area embedded memory mobile video power consumption

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Multimodal multi-device program guide for smart conferences 11

Multimodal multi-device program guide for smart conferences

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13th International Conference on Human-Computer Interaction with mobile devices and Services, mobile HCI 2011

作者： Turunen, Markku Hella, Juho Miettinen, Toni valkama, Pellervo Hakulinen, Jaakko Raisamo, Roope Tampere Unit for Computer Human-Interaction School of Information Sciences University of Tampere 33014 Tampere Finland

ISBN: (纸本)9781450305419

We demonstrate a multimodal, multi-user, and multi-device conference program guide for conference participants. Its functionality includes access to the conference program with additional multimedia content, voting, feedback, and communication with the other participants. People can interact with the system in a multimodal way using spoken language, gestures and haptic feedback with mobile phones and shared public displays. © 2011 Authors.

关键词： multimedia systems

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CBIR for Image-Based Language Learning within mobile Environment

CBIR for Image-Based Language Learning within Mobile Environ...

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52nd IEEE International Midwest Symposium on Circuits and systems

作者： Starostenko, O. Contreras Gomez, R. Alarcon-Aquino, v. Sergiyenko, O. Univ Americas Puebla Commun & Signal Proc Res Grp Dept Comp Sci Cholula Mexico Univ Autonoma Baja California Engn Inst Dept Appl Phys Mexicali Baja California Mexico

ISBN: (纸本)9781424444793

This paper presents the analysis of emerging data exchange technologies used for integration of mobile devices to image-based learning process of second language. Particularly, the design of portable personal spaces providing mobile access to multimedia documents based on XML technologies and creation of generic interfaces for learning environments have been carried out. For image-based languages learning that implies the image processing, recognition, and retrieval Two Segment Turning function has been proposed and analyzed for possible adoption in applications assisted by mobile devices. The evaluation of designed prototype of image-based language learning system for interpretation of Japanese kanji and Mayan glyphs on mobile devices is discussed in this paper. Additionally the performance of proposed approaches used in content-based image retrieval is evaluated for their possible integration within mobile learning environments.

关键词： Learning systems

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Frontiers of Wireless and mobile Communications

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PROCEEDINGS OF THE IEEE 2012年第4期100卷 824-840页

作者： Raychaudhuri, Dipankar Mandayam, Narayan B. Rutgers State Univ Technol Ctr NJ WINLAB N Brunswick NJ 08902 USA

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 I

关键词： Ad hoc and mesh networks audiovisual communication broadband services cognitive radio delay-tolerant routing future Internet MIMO mobile multimedia radio access networks software-defined radio wireless communication 3G and 4G mobile communication

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Exploiting caching, proxy re-encryption, incentives, and Wi-Fi Direct for authorized content distribution

Exploiting caching, proxy re-encryption, incentives, and Wi-...

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7th International Conference on Emerging Ubiquitous systems and Pervasive Networks (EUSPN) / 6th International Conference on Current and Future Trends of Information and Communication Technologies in Healthcare (ICTH)

作者： Fotiou, Nikos Polyzos, George C. Athens Univ Econ & Business Sch Informat Sci & Technol Dept Informat Mobile Multimedia Lab 47A Evelpidon Athens 11362 Greece Univ Calif San Diego Jacobs Sch Engn Dept Comp Sci & Engn La Jolla CA 92093 USA

Ubiquitous access to the Internet is becoming critical. Direct cellular network connectivity of mobile devices is not always possible or desirable, for various reasons. We design and discuss a scheme that can be used to distribute authorized content to devices through Wi-Fi Direct and discuss how to provide incentives to the devices connected to the Internet to securely relay traffic, taking into consideration their available energy and bandwidth. (C) 2016 The Authors. Published by Elsevier B.v.

关键词： Device-to-Device communications D2D ICN CCN NDN

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Planar array design and analysis on direction of arrival estimation for mobile communication systems

Planar array design and analysis on direction of arrival est...

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作者： Sanudin, Rahmat The University of Edinburgh

学位级别：master

The demand of wireless communication has increased significantly in the past few decades due to huge demand to deliver multimedia content instantly. The expansion of mobile content paired with affordable mobile devices has opened a new trend for having access to the latest information on mobile devices. This trend is made possible by the technology of smart antenna systems as well as array signal processing algorithms. Array signal processing is not limited to wireless communication, but also found in other applications such as radar, sonar and automotive. One of the important components in array signal processing is its ability to estimate the direction of incoming signals known as directional-of-arrival (DOA). The performance of DOA algorithms depends on the steering vector since it contains information about the direction of incoming signals. One of the main factors to affect the DOA estimation is the array geometries since the array factor of the array geometries determines the definition of the steering vector. Another issue in DOA estimation is that the DOA algorithms are designed based on the ideal assumption that the antenna arrays are free from imperfection conditions. In practice, ideal conditions are extremely difficult to obtain and thus the imperfect conditions will severely degraded the performance of DOA estimation. The imperfect conditions include the presence of mutual coupling between elements and are also characteristic of directional antenna. There are three topics being discussed in this thesis. The first topic being investigated is new geometry of antenna array to improve the performance of DOA estimation. Two variants of the circular-based array are proposed in this thesis: semi-circular array and oval array. Another proposed array is Y-bend array, which is a variant of v-shape array. The proposed arrays are being put forward to offer a better performance of DOA estimation and have less acquired area compared with the circular array. It is fou

关键词： 621.382 antenna array DOA estimation directional-of-arrival directional antenna array

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