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

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Peer to Peer Content Sharing on Ad Hoc Networks of Smartphones

Peer to Peer Content Sharing on Ad Hoc Networks of Smartphon...

引用

7th IEEE International Wireless Communications and Mobile computing conference (IWCMC)

作者： Tysowski, Piotr K. Zhao, Pengxiang Naik, Kshirasagar Univ Waterloo Dept Elect & Comp Engn Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9781424495375

Peer-to-peer networks offer advantages over traditional client-server networking models, such as the lack of a need for connectivity to trusted intermediary hosts or servers and the use of less costly communication links. While they have become popular in the wired broadband environment, they have not yet been effectively adapted to the resource-constrained mobile network environment. They promise significant potential in applications such as the sharing of files like multimedia and operating system updates between mobile devices. However, the peer-to-peer model faces unique challenges in the mobile context, such as limitations on processing power, on-board device memory, wireless data bandwidth, and available battery energy. We propose a high-level framework for a peer-to-peer protocol with these specific constraints addressed. In addition, we investigate the feasibility of a practical implementation of a peer-to-peer file sharing model on smartphones, including an analysis of how performance is impacted by various variables that can be dynamically controlled in the protocol. Through experimentation on leading smartphones, we have found various optimal strategies, including minimizing the upload-to-download ratio to conserve battery life, using larger file segments to increase throughput, and using sockets to decrease memory overhead.

关键词： Peer to peer computing mobile computing mobile ad hoc networks wireless communication Bluetooth multimedia communication

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Mobile Peer to Peer Spontaneous and Real-Time Social networking

Mobile Peer to Peer Spontaneous and Real-Time Social Network...

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1st International conference on Advances in computing and Communications

作者： Varshney, Abhishek Qadeer, Mohammed Abdul Birla Inst Technol & Sci Dept Comp Sci & Informat Syst Pilani 333031 Rajasthan India Aligarh Muslim Univ Zakir Husain Coll Engn & Technol Dept Comp Engn Aligarh 202001 Uttar Pradesh India

ISBN: (纸本)9783642227134

In this paper, we try to present a social networking model based on a hybrid combination of mp2p and traditional client-server technologies. The handheld devices used today are much better in performance in terms of processing power and memory than many of the web servers of early times. These handheld devices are also equipped with so many multimedia features that they have become the primary device for people to capture day-to-day occurrences. Moreover, a handheld device is always carried by a person with him wherever he goes. We would try to develop a hybrid model of client-server and peer to peer technologies which would provide spontaneous and instantaneous updates to the peers in the trusted group without actually "pushing" of updates by the user, at the same time, overcoming the limitations of traditional client-server approach of the social networking websites of today.

关键词： mobile peer to peer network mp2p real-time sharing spontaneous social networking ubiquitous networking

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Adaptive error resilient coding based on FMO in wireless video transmission

Adaptive error resilient coding based on FMO in wireless vid...

引用

3rd International conference on multimedia Information networking and Security, MINES 2011

作者： Zhu, Feng Zhang, Weiming Yu, Nenghai Xu, Jiajia Wu, Gang MOE-Microsoft Key Laboratory of Multimedia Computing Snd Communication University of Science and Technology of China Hefei 230027 China

ISBN: (纸本)9780769545592

H.264/AVC is the latest video coding standard from ITU-T and ISO/IEC. Not only the compression performance is enhanced but also the robustness of video bit streams to errors is better. FMO (Flexible Macro-block Ordering) is a new error resilient tool adopted by H.264/AVC and it has a good performance of error resilience. In this paper, a novel FMO algorithm is proposed, and an adaptive coding scheme based on this new FMO algorithm is introduced. Experiment results show that the proposed FMO algorithm could achieve almost the same PSNR as the FMO Type 1, but has better robustness in wireless transmission, and the adaptive coding scheme can still guarantee a high PSNR in the case of high packet loss rate. © 2011 IEEE.

关键词： Errors

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Enhancing the experience and efficiency at a conference with mobile social networking: Case study with find and connect 1

引用

4th International conference on Human-Centric computing, HumanCom'11 and the 6th International conference on Embedded and multimedia computing, EMC'11

作者： Chang, Lele Chin, Alvin Wang, Hao Zhu, Lijun Zhang, Ke Yin, Fangxi Wang, Hao Zhang, Li Nokia Research Center 100176 Beijing China Department of Electronic Engineering Tsinghua University 100084 Beijing China

ISBN: (数字)9789400721050

ISBN: (纸本)9789400721043

With mobile devices and wireless technology becoming pervasive at conferences, conference attendees can use location-based mobile social networking applications such as Foursquare and Gowalla to share their location and content with others. How to use the mobile devices and the indoor positioning technology to help the conference participants enhance the real-world interactions of people and improve efficiency during the conference? In this paper, we report our work in Nokia Find & Connect (NF&C) to solve this problem where we use location and encounters, together with the conference basic services, all through a mobile UI. To demonstrate the usefulness of the NF&C system, we conducted a field trial at the 7th International conference on Ubiquitous Intelligence and computing and Autonomic and Trusted computing (UIC/ATC 2010). Results show that NF&C can help the conference participants enhance the real-world interactions of people and improve efficiency at a conference effectively. © 2011 Springer Science+Business Media B.V.

关键词： Efficiency

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Dynamic QoS management in mobile services framework

Dynamic QoS management in mobile services framework

引用

International conference on multimedia computing and Systems

作者： Zoubairi, Rida Jarir, Zahi Erradi, Mohammed Computer Science Department Faculty of Sciences Cadi Ayyad University Marrakech Morocco Alkhawarizmi Computing Research Laboratory ENSIAS Mohamed V-Souissi University Rabat Morocco

ISBN: (纸本)9781612847306

The current ever-growing advances in wireless networking and the great success of mobile computing have contributed to the development of an increasing amount of mobile services. Due to this growth of published services, quality of service (QoS) is becoming a key feature to provide the most appropriate needed service to mobile clients according to their requirements. However, managing QoS represents a critical and significant challenge in the mobile computing because of the dynamic nature of mobile environment. In addition, Service providers can use different and non-standard QoS parameters to describe QoS properties of a published service. At this end, and based on MAQAME Architecture suggested in our previous work, our current contribution is to implement QoS Management System which is responsible to propose the most appropriate service in term of QoS among the provided local mobile services. This implementation uses Devices Profile for Web Services (DPWS) specification, WS-Policy for QoS policy specification and Apache Neethi for policy processing. © 2011 IEEE.

关键词： Quality of service

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Advanced Computer Science and Information Technology 2011

引用

丛书名： Communications in Computer and Information Science

2011年

作者： Tai-hoon Kim Hojjat Adeli Rosslin John Robles Maricel Balitanas

ISBN: (数字)9783642242670

ISBN: (纸本)9783642242663

This volume constitutes the refereed proceedings of the Third International conference on Advanced Science and Technology, AST 2011, held in Seoul, South Korea, in September 2011. The 37 revised full papers presented in this volume were carefully reviewed and selected from numerous submissions. The papers feature ideas, problems and solutions relating to the multifaceted aspects of the Advanced Science and Technology, such as communication and networking; ubiquitous multimedia computing; security technology and information assurance; computer science, software engineering and applications thereof; bio-science and bio-technology; u- and e-service, science and technology; database theory and application; control and automation; signal processing, image processing and pattern recognition; as well as grid and distributed computing.

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GuideMe! The World of Sights in Your Pocket

GuideMe! The World of Sights in Your Pocket

引用

IEEE 27th International conference on Data Engineering (ICDE 2011)

作者： Zerr, Sergej Bischoff, Kerstin Chernov, Sergey Leibniz Univ Hannover Res Ctr L3S D-30167 Hannover Germany

ISBN: (纸本)9781424489589

Web 2.0 applications are a rich source of multimedia resources, that describe sights, events, whether conditions, traffic situations and other relevant objects along the user's route. Compared to static sight descriptions, Web 2.0 resources can provide up-to-date visual information, which has been found important or interesting by the other users. Some algorithms have been suggested recently for the landmark finding problem from photos. Still, if users want related videos or background information about a particular place of interest it is necessary to contact different social platforms or general search engines. In this paper we present GuideMe! - a mobile application that automatically identifies landmark tags from Flickr groups and gathers relevant sightseeing resources from various Web 2.0 social platforms.

关键词： Cities and towns Flickr groups GuideMe! Internet Mobile communication Mobile handsets Videos Web 2.0 applications Web services YouTube general search engines landmark finding problem mobile application mobile computing multimedia resources multimedia systems search engines sightseeing resources social networking (online) social platforms traffic situations up-to-date visual information

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Parallel execution of distributed SVM using MPI (CoDLib)

Parallel execution of distributed SVM using MPI (CoDLib)

引用

2011 International conference on Information Technology and multimedia: "Ubiquitous ICT for Sustainable and Green Living", ICIM 2011

作者： Salleh, Nur Shakirah Md. Suliman, Azizah Ahmad, Abdul Rahim Department of System and Networking Universiti Tenaga Nasional Kajang Malaysia

ISBN: (纸本)9781457709890

Support Vector Machine (SVM) is an efficient data mining approach for data classification. However, SVM algorithm requires very large memory requirement and computational time to deal with very large dataset. To reduce the computational time during the process of training the SVM, a combination of distributed and parallel computing method, CoDLib have been proposed. Instead of using a single machine for parallel computing, multiple machines in a cluster are used. Message Passing Interface (MPI) is used in the communication between machines in the cluster. The original dataset is split and distributed to the respective machines. Experiments results shows a great speed up on the training of the MNIST dataset where training time has been significantly reduced compared with standard LIBSVM without affecting the quality of the SVM. © 2011 IEEE.

关键词： Message passing

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Exploiting wireless broadcast advantage as a network-wide cache

Exploiting wireless broadcast advantage as a network-wide ca...

引用

2011 IEEE 7th International conference on Wireless and Mobile computing, networking and Communications, WiMob'2011

作者： Banerjee, Abhik Foh, Chuan Heng Yeo, Chai Kiat Lee, Bu Sung Centre for Multimedia and Network Technology School of Computer Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9781457720147

Existing literature has looked to exploit wireless broadcast advantage (WBA) in order to optimize the performance of a wide variety of network operations. In this paper, we obtain a measure of WBA in a multihop scenario. We consider that all nodes in the network store and propagate implicitly received information from neighbourhood transmissions, resulting in the creation of a distributed cache, which we term broadcast cache. We obtain a lower bound on the growth of the broadcast cache in terms of the fewest set of transmissions in the network, which we define as the minimum set of non-altruistic transmissions. Subsequently, we use our results to obtain feasibility conditions that determine whether WBA can be effectively utilized depending on flow requirements. © 2011 IEEE.

关键词： Broadcasting

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QOS management for multimedia services based on session reconfiguration: A future internet case study

QOS management for multimedia services based on session reco...

引用

27th Annual TERENA networking conference, TNC 2011

作者： Dobrijevic, Ognjen Matijasevic, Maja Faculty of Electrical Engineering and Computing University of Zagreb Unska 3 HR-10000 Zagreb Croatia

ISBN: (纸本)9789077559000

This paper presents a case study for an approach to managing Quality of Service (QoS) for real-time multimedia services by means of session reconfiguration. The key components of the proposed approach are: (1) mobility events that stem from session mobility and terminal mobility, and affect established QoS, and (2) basic operations that are called reconfiguration primitives. Mobility events drive the session reconfiguration, which then applies reconfiguration primitives to maintain or adapt QoS. A set of the required QoS functional aspects serves as the basis for modelling generic functional network architecture, which is closely outlined. The case study which involves applying the approach in a Future Internet architecture is described in more detail. It builds on a real-network prototype that facilitates session control and the QoS management by using the Session Initiation Protocol (SIP) signalling. Demonstrated use case illustrates that QoS is maintained when a user switches from one terminal device to another.

关键词： Quality of service

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