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An Adaptive Method based on Data Size for Broadcast in Mobile Computing Environments  

유영호 (부산대학교 전자계산학과)
이종환 (부산대학교 전자계산학과)
김경석 (부산대학교 전자전정보컴퓨터공학부)
Publication Information
Journal of KIISE:Information Networking / v.30, no.2, 2003 , pp. 155-166 More about this Journal
Abstract
Mobile computing becomes a new issue of researches in computing due to the advances of mobile equipment and the connection with Internet. In mobile environment, there are many constraints such as limited bandwidth, intermittent disconnection, limited battery life, and so on. By these reasons, broadcasting has been generally used to disseminate data efficiently by the mobile applications. This paper proposes an adaptive broadcasting method which logically divides broadcast channel into the periodic broadcast channel and the on-demand broadcast channel and dynamically assigns the bandwidths of both channel. The former disseminates data that are selected based on both the popularity and the size of each datum, the latter disseminates data that are selected based on the requests of mobile clients. When selecting data to be disseminated, the proposed broadcasting method considers the mobility of a mobile client and also considers the size of each datum by using SF(size factor) proposed in this paper. This paper also evaluates the proposed broadcasting method by measuring the energy expenditure of mobile client in experiments.
Keywords
Adaptive Broadcasting; Hybrid Broadcasting; Size Factor; Mobile Computing;
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