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2013 제5회 정보전자융합공학부 국제심포지엄

  • 포항공과대학교
  • Vijay Bhargava, Harri Siitari, Ajay Agarwal, Prasant Mohapatra, Mikio Aoyama, Dongman Lee, Ben Lee
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    공학 >컴퓨터ㆍ통신 >정보통신공학
  • 강의학기
    2013년 1학기
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    698
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Research Issues for Energy Efficient Cellular Networks Prof. Vijay Bhargava
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1. Research Issues for Energy Efficient Cellular Networks Prof. Vijay Bhargava The rising energy costs and carbon footprint of operating cellular networks have led to a trend in addressing energy-efficiency amongst the network operators and regulatory bodies such as 3GPP and ITU. "Greening" the wireless networks is a vast research discipline that needs to cover all the layers of the protocol stack and various system architectures and it is important to identify the fundamental trade-offs linked with energy efficiency and the overall performance. In this talk, we identify four important aspects of a green networking where we would like to focus: defining green metrics, bringing architectural changes in base stations, network planning, and efficient system design. We begin with a brief discussion on energy efficiency metrics. Since Base Stations (BSs) consume a major chunk of input energy, we discuss the energy efficiency of BSs. Next we discuss energy efficiency from a network planning perspective, based on smaller cells for heterogeneous networks. For system design, we put a special emphasis on cognitive and cooperative techniques in order to realize energy efficient cellular systems. Finally we discuss some broader perspectives and possible future trends in realizing a green cellular network technology. URL
2. Technologies for health and wellbeing-towards personalized medicine Harri Siitari We are combining VTT technologies in ICT, biotechnology and diagnostics for future health care (providers) and new technology platforms for the health care industry. Special attention is being paid to predictive markers, novel diagnostics and new business opportunities. By combining and mining digital imaging data from different sources, a better understanding of the disease state at the personal level can be generated. This is further combined with VTT's research in systems biology and disease-specific biomarkers to combine the in-vivo and in-vitro data for diagnostics and therapy decisions. New biosensor technologies are being developed for future molecular diagnostics at point-of-care settings and at home. These technology platforms utilise silicon, glass or polymer substrates, new sensor technologies, recombinant antibodies and new predictive biomarkers. VTT technologies can be used for follow-up of diagnostic markers at the individual level, nutrition - including markers for healthy eating - and follow-up of treatment and support for living at home. URL
3. Silicon Nano BioFETs for early Diagnosis Prof. Ajay Agarwal Silicon Nano BioFETs for early Diagnosis URL
4. Evaluating Mobile Video and Applications Prof. Prasant Mohapatra This talk will be focused on two aspects of the expanding usage of mobile applications, services, and devices. The first part of the talk will deal with the mobile video quality assessment, while the second part will provide insights to the smartphone applications and their overheads. Assessment of mobile videos raises unique challenges due to the unavailability of original videos, the limited computation power of mobile devices and the inherent characteristics of wireless networks (packet loss and delay). We will present a metric, Temporal Variation Metric (TVM), to measure the temporal information of videos. We use the TVM values to derive a reduced-reference temporal quality assessment metric, Temporal Variation Index (TVI), which quantifies the quality degradation incurred in network trans-mission. We show that TVI can also estimate the network conditions such as packet loss and delay. In the second part of the talk, we focus on identifying the overhead traffic that is generated by the free apps with respect to the paid apps. The goal of this work is to quantify the cost of the overhead traffic of the popular free apps and compare it with the paid apps. We have developed an intricate methodology for identifying and measuring the bandwidth requirements of the overheads associated with the free apps. Through comprehensive measurements, we have shown that in most cases, the paid versions of the apps will indeed be a fraction of the cost to the end users when compared to the actual cost of the free versions. URL
5. Research Challenges for Smarter Automotive: Convergence of Automobile, Transportation Network, and Information and Communication Technology Prof. Mikio Aoyama This talk will high-lighten the diverse research challenges arising from the convergence of automotive engineering and information engineering. The undergoing convergence makes automobile fundamentally change. Now, automobile is not only a vehicle of transportation, but also a vehicle of information, communication, and services. the hood an automobile, more than 50 computers and numerous sensors are working together for making the automobile smarter, greener and fully connected. Through communication networks, the automobile can send information on the traffic, weather and collective intelligence to cloud computing, where we can discover many insights by analyzing the information as a big data. Now, automotive is a research platform for a wide area of research and development. URL
6. From Context-aware to Social-aware: Place-Aware Service Provision in A Smart Space Prof. Dongman Lee With the emergences of smart devices such as mobile phones, smart signages and displays, etc in our everyday environment, the provision of intelligent services does not remain a target user's boundary anymore. This has promoted the development of mobile social applications to enable opportunistic interactions with co-located users. One of the challenging problems in such interactions is to discover interaction opportunities with nearby users. The social implications of the place in which the interaction is taking place are an important factor for recommendations, as those implications provide hints about the most plausible types of interactions among co-located users. In this talk, we present our inter-disciplinary research work called SpinRadar which is designed to provide spontaneous services to the users in a given place by taking into account the semantics of the place, which we call “placeness.” URL
7. Application and Challenges of Flexible Dual TCP/UDP Streaming for H.264 HD Video Over WLANs Prof. Ben Lee High Definition video streaming over WLANs faces many challenges because video data requires not only data integrity but also frames have strict playout deadline. Traditional streaming methods that rely solely on either UDP or TCP have difficulties meeting both requirements because UDP incurs packet loss while TCP incurs delay. This presentation presents a new streaming method called Flexible Dual-TCP/UDP Streaming Protocol (FDSP) that utilizes the benefit of both UDP and TCP. The FDSP takes advantage of the hierarchical structure of the H.264/AVC syntax and uses TCP to transmit important syntax elements of H.264/AVC video and UDP to transmit less important elements. The proposed FDSP is implemented and validated under different wireless network conditions. Both visual quality and delay results are compared against pure-UDP and pure-TCP streaming methods. Our results show that FDSP effectively achieves a balance between delay and visual quality, thus it has advantage over traditional pure-UDP and pure-TCP methods. URL

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