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IMS cloud computing architecture for high-quality multimedia applications

IMS cloud computing architecture for high-quality multimedia...

引用

International Wireless Communications and Mobile computing conference, IWCMC

作者： Jiann-Liang Chen Szu-Lin Wuy Yanuarius Teofilus Larosa Pei-Jia Yang Yang-Fang Li Department of Electrical Engineering National Taiwan University of Science and Technology Taipei Taiwan National Dong Hwa University Shoufeng TW

A novel IP multimedia Subsystem (IMS) framework with cloud computing architecture is proposed for use in high-quality multimedia applications. The IMS supports heterogeneous networking with Quality-of-Service (QoS) policy. MapReduce analysis is also used to enhance cloud computing capability. This architecture enables users to access high-quality multimedia applications via Android-based appliances. In this study, the IMS QoS policies of three wireless access technologies, 3G, WiFi and WiMAX, are integrated in a cloud computing environment to provide different services such as VoIP services and video streaming services. Experimental results indicate that the proposed mechanism improves system performance by allocating resources according to service priority. The proposed architecture also significantly improves system capacity to accommodate numerous users.

关键词： Quality of service Cloud computing multimedia communication Computer architecture Streaming media multimedia computing

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Human re-identification system on highly parallel GPU and CPU architectures

Human re-identification system on highly parallel GPU and CP...

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4th International conference on multimedia Communications, Services and Security, MCSS 2011

作者： BĄk, Slawomir Kurowski, Krzysztof Napierala, Krystyna INRIA Sophia Antipolis PULSAR Group France Poznań Supercomputing and Networking Center Poland Institute of Computing Science Poznań University of Technology Poland

ISBN: (纸本)9783642215117

The paper presents a new approach to the human reidentification problem using covariance features. In many cases a distance operator between signatures based on generalized eigenvalues has to be computed efficiently, especially once the real-time response is expected from the system. This is a challenging problem as many procedures are computationally intensive tasks and must be repeated constantly. To deal with this problem we have successfully designed and tested a new video surveillance system. To obtain the required high efficiency we took the advantage of highly parallel computing architectures such as FPGA, GPU and CPU units to perform calculations. However, we had to propose a new GPU-based implementation of the distance operator for querying the example database. In this paper we present experimental evaluation of the proposed solution in the light of the database response time depending on its size. © 2011 Springer-Verlag.

关键词： Covariance matrix

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Is Cloud computing Steganography-proof?

Is Cloud Computing Steganography-proof?

引用

第三届多媒体信息网络与安全国际会议

作者： Wojciech Mazurczyk Krzysztof SzczypiorskiZ Institute of Telecommunications Warsaw University of Technology Warsaw Poland

The paper focuses on characterisation of information hiding possibilities in Cloud computing. After general introduction to cloud computing and its security we move to brief description of steganography. In particular we introduce classification of steganographic communication scenarios in cloud computing which is based on location of the steganograms receiver. These scenarios as well as the threats that steganographic methods can cause must be taken into account when designing secure cloud computing services.

关键词： network security, steganography, cloud computing

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Performance Evaluation of the MMS Framework for Internet Applications

Performance Evaluation of the MMS Framework for Internet App...

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ACIS International conference on Software Engineering, Artificial Intelligence, networking, and Parallel/Distributed computing (SNPD)

作者： Andik Setyono Md. Jahangir Alam Faculty of Information Tech Multimedia University Cyberjaya Malaysia Faculty of Information Technology Multimedia University Cyberjaya Malaysia

This research focuses on the development and performance evaluation of MMS framework for internet applications. The details of the architecture and algorithms employed in the MMS framework for message delivery are presented. We implement the proposed MMS framework for internet application by building a mobile telemedicine system. On the client side, we develop MMS application that implements data compression and split techniques and on the server side, we implement merge and decompression techniques. The compression and split techniques are required in order to send large-size data files which is not possible with the existing MMS technology. The proposed technique ensures that the quality of data is perserved which is critical for accomplishing the diagnosis process. The performance measure, 'Peak Signal to Noise Ratio (PSNR)' is used to evaluate the quality of data. The experimental results show that the proposed framework can be used to develop internet applications for a practical mobile telemedicine system.

关键词： Mobile communication Servers Telemedicine Internet multimedia communication Electronic mail Mobile handsets

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Digital Evidence Discovery and Knowledge Management Issues Concerning multimedia computing Devices Utilizing GPS Navigation Services and Social Network Activities

Digital Evidence Discovery and Knowledge Management Issues C...

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6th International conference on Future Information Technology (FutureTech 2011)

作者： Chu, Hai-Cheng Chang, K. H. Wang, Yi-Da Park, Jong Hyuk Seoul Natl Univ Technol Dept Comp Sci & Engn 172 Gongneung Dong 2 Seoul 139743 South Korea Natl Taichung Univ Educ Dept Int Business Taichung 40306 Taiwan Tunghai Univ Dept Int Business Taichung 40704 Taiwan

ISBN: (纸本)9783642223082

Mobile communication devices are commonly adopted in contemporary Internet Communication Technology (ICT) era with unparalleled evolving pace. Regrettably. ICT related cybercrimes are rising in an unprecedented speed. Unquestionably, the detection and prevention of the associate information security incidents becomes much more urgent and unarguable both in public sectors as well as private sectors. In this paper, the utilization of a PDA for GPS navigation and Wi-Fi connection to ubiquitous social networking service provider - Facebook are cross examined concerning the related digital evidence collecting and discovering concerning ubiquitous networks and wireless communications, which provides a framework for the associate digital forensics.

关键词： mobile device digital forensics global position system volatile memory acquisition Facebook

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Improving Video Delivery over Wireless multimedia Sensor Networks Based on Queue Priority Scheduling

Improving Video Delivery over Wireless Multimedia Sensor Net...

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International conference on Wireless Communications, networking and Mobile computing (WiCom)

作者： Elham Karimi Behzad Akbari Department of Electrical and Computer Engineering Qazvin Islamic Azad University Qazvin Iran Department of Electrical and Computer Engineering Tarbiat Modares University Tehran Iran

Using multipath routing protocols results in more efficient data transmission than single path routing protocols in Wireless multimedia Sensor Networks (WMSNs). In this paper, we propose a new mechanism for improving video transmission over WMSN based on queue priority scheduling. We assume that network has high CBR traffic with no video data in addition to video packets. In our mechanism, intermediate nodes buffer (queue) is scheduled for quick and righteously transmission of video packets compared with the other packets in network. Simulation results show that our proposed scheduling improves important Quality-of-Service (QoS) metrics such as end-to-end delay and frame loss percentage for video streaming.

关键词： Streaming media Scheduling Delay Wireless sensor networks Routing protocols Jitter Wireless communication

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HCI for peace: From idealism to concrete steps

HCI for peace: From idealism to concrete steps

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作者： Hourcade, Juan Pablo Nelson, Mark Bullock-Rest, Natasha E. Ben, Shneiderman Friedman, Batya Zaphiris, Panayiotis Department of Computer Science University of Iowa Iowa City IA 52242 United States Stanford Peace Innovation Lab. Stanford University Stanford CA 94305 United States Department of Computer Science University of Iowa Iowa City IA 52242 United States Human-Computer Interaction Laboratory University of Maryland College Park MD 20742 United States Information School University of Washington Seattle WA 98105 United States Department of Multimedia and Graphic Arts Cyprus University of Technology Limassol 3603 Cyprus

ISBN: (纸本)9781450302289

This panel will contribute diverse perspectives on the use of computer technology to promote peace and prevent armed conflict. These perspectives include: the use of social media to promote democracy and citizen participation, the role of computers in helping people communicate across division lines in zones of conflict, how persuasive technology can promote peace, and how interaction design can play a role in post-conflict reconciliation.

关键词： Social networking (online)

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The Research of CMMB Wireless Network Analysis Based on Data Mining Association Rule

The Research of CMMB Wireless Network Analysis Based on Data...

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International conference on Wireless Communications, networking and Mobile computing (WiCom)

作者： Guoping Lei Minlu Dai Zefu Tan Yan Wang College of Electronic and Information Engineering Chongqing Three Gorges University Wanzhou Chongqing China

Through analysis the wireless network testing system of China Mobile multimedia Broadcasting (CMMB) system and data mining association rules, design a method for analysis the CMMB wireless network. First, we can get a large number of data from wireless network testing system, and then, the data is discretized and import in database. Second, use the data mining association rules to obtain the key indicators of threshold for CMMB wireless network optimization. Finally, in the actual test in application, give the example of the Beijng CMMB wireless network test, we can get some Beijing CMMB wireless network optimization parameters. After application in the Beijing, it is not only to see the method can get some CMMB wireless network optimization parameters, but also it can reduce the complexity when testing the wireless network, and it is very easy to upgrade the system.

关键词： Wireless networks Association rules Signal to noise ratio Testing multimedia communication Databases

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Multiple Utility Factors-Based Parallel Packet Scheduling for Broadcast/Unicast in BWM Systems

Multiple Utility Factors-Based Parallel Packet Scheduling fo...

引用

International conference on Wireless Communications, networking and Mobile computing (WiCom)

作者： Min Wang Chunyan Feng Tiankui Zhang School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing China

To maximize the utilization of system resources with satisfying diverse quality of service (QoS) requirements, a novel multiple utility factors-based parallel (MUFP) packet scheduling algorithm is proposed for the broadcast base station (BBS) and cell base station (CBS) mixed mode of broadband wireless multimedia (BWM) systems. MUFP takes into consideration QoS requirements, queue dynamics and channel state information to adapt service priority with multiple utility factors of quality of service, queuing delay, buffer occupancy, data rate, deadline and channel state profile. In order to reduce computation complexity, parallel packet scheduling is introduced by only selecting the part traffics with higher priority in the single utility factor buffer. Simulation results show that the proposed algorithm improves delay and throughput performance with low complexity.

关键词： Delay Quality of service Scheduling algorithm Throughput Scheduling multimedia communication Complexity theory

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Design of FPGA-Based multimedia Node for WSN

Design of FPGA-Based Multimedia Node for WSN

引用

International conference on Wireless Communications, networking and Mobile computing (WiCom)

作者： Yan Sun Le Li Hong Luo Beijing Key Lab of Intelligent Telecomm. Software and Multimedia Beijing University of Posts and Telecommunications Beijing China

Recent advances in SoC technology offer the possibility to realize the function of wireless sensor network node in a single chip. In this paper a reconfigurable wireless sensor network node for quick transmission of voice data is being described. Compared with existing works, we can implement different types of components depends on the application in which the sensor is meant to use. Using Verilog, we provide a detailed description of the implementation of MAC layer controller protocol based on IEEE 802.15.4 MAC layer protocol. An improved CSMA/CA mechanism is introduced for the transmission of voice data, enhancing its timelines and reliability. Finally, we make up testing platform for MAC layer controller. From the hardware and software simulation results, the design of MAC layer controller based on FPGA is successfully verified.

关键词： Wireless sensor networks Multiaccess communication Field programmable gate arrays Wireless communication Media Access Protocol Real time systems

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