【電機系書報討論演講訊息】

書報討論網頁：http://www.ee.nthu.edu.tw/~ee591000/

演講公告網址：/p/403-1175-2629-1.php

題   目：Extend Your Journey: Introducing Signal Strength into Location-based Applications

講   員：鄭志川教授 (中研院)

時        間：2014年5月2日(星期五) 下午2時20分 (2時10分入場)

地   點：台達館105教室

Abstract:

With the popularity of mobile devices equipped with location-sensing technology, a variety of location-based applications and services have progressively permeated people's daily life. However, such growth trend will lead to a significant boost in mobile data traffic and, consequently, result in further pressure on the limited batter capacity of mobile devices. Thus, reducing the communication energy is an imminent challenge in stimulating the development of emerging location-based mobile applications.

In this talk, I will present a new concept, introducing signal strength into location-based applications, with which mobile devices can reduce the communication energy for data reception. To prove the concept, I have implemented a virtual tour system, where the fundamental problem is modeled as a data fetch scheduling problem and optimally solved by a dynamic-programming algorithm. The solution involves scheduling the fetching of location-based information at appropriate locations so as to minimize the total energy consumption, without impacting the application’s semantics adversely. Finally, through the experiment evaluation and the postoptimal analysis, the concept is proved practicable towards signal strength fluctuations.

Bio:

Chih-Chuan Cheng received his B.S. in Electrical Engineering from Minghsin University of Science and Technology in 2000, and his M.S. and Ph.D. degrees in Electrical Engineering from National Chung Cheng University (NCCU) in 2005 and 2011 respectively. In 2010, he was a visiting Ph.D. student supervised by Prof. Sunil Kumar in the Department of Electrical and Computer Engineering at San Diego State University. He has been a post-doctoral fellow in Research Center for Information Technology Innovation at Academia Sinica, Taipei, Taiwan, since 2011. His research interests include wireless sensor networks and wireless mobile networks.

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