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Mobile Information Systems
Volume 8 (2012), Issue 4, Pages 303-314

A Scheduling Method to Reduce Waiting Time for Close-Range Broadcasting

Yusuke Gotoh,1,2 Tomoki Yoshihisa,3 Hideo Taniguchi,1 Masanori Kanazawa,4 Wenny Rahayu,2 and Yi-Ping Phoebe Chen2

1Okayama University, Okayama, Japan
2La Trobe University, Melbourne, VIC, Australia
3Osaka University, Osaka, Japan
4The Kyoto College of Graduate, Studies for Informatics, Kyoto, Japan

Received 12 November 2012; Accepted 12 November 2012

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Due to the recent popularization of digital broadcasting systems, close-range broadcasting using continuous media data, i.e. audio and video, has attracted great attention. For example, in a drama, after a user watches interesting content such as a highlight scene, he/she will watch the main program continuously. In close-range broadcasting, the necessary bandwidth for continuously playing the two types of data increases. Conventional methods reduce the necessary bandwidth by producing an effective broadcast schedule for continuous media data. However, these methods do not consider the broadcast schedule for two types of continuous media data. When the server schedules two types of continuous media data, waiting time that occurs from finishing the highlight scene to starting the main scene, may increase. In this paper, we propose a scheduling method to reduce the waiting time for close-range broadcasting. In our proposed method, by dividing two types of data and producing an effective broadcast schedule considering the available bandwidth, we can reduce the waiting time.