TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast

Wireless broadcast is very suitable for delivering information to a large user population. In this paper, we concentrate on data allocation methods for multiple broadcast channels. To the best of our knowledge, this is the first allocation model that takes into the consideration of items' acces...

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Main Authors: ZHENG, Baihua, XU, Xia, JIN, Xing, LEE, Dik Lun
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Language:English
Published: Institutional Knowledge at Singapore Management University 2005
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Online Access:https://ink.library.smu.edu.sg/sis_research/587
https://ink.library.smu.edu.sg/context/sis_research/article/1586/viewcontent/MDM05_final.pdf
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spelling sg-smu-ink.sis_research-15862015-12-26T01:39:16Z TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast ZHENG, Baihua XU, Xia JIN, Xing LEE, Dik Lun Wireless broadcast is very suitable for delivering information to a large user population. In this paper, we concentrate on data allocation methods for multiple broadcast channels. To the best of our knowledge, this is the first allocation model that takes into the consideration of items' access frequencies, items' lengths. and bandwidth of different channels. We first derive the optimal average expected delay for multiple channels for the general case where data access frequencies, data sizes, and channel bandwidths can all be non-uniform. Second, we develop TOSA, a multi-channel allocation method that does not assume a uniform broadcast schedule for data items on the same channel. TOSA is based on the idea of two-level data allocation, i.e., a high-level optimization step for allocating data to the channels, followed by a low-level optimization step to schedule data within a channel. We show that TOSA achieves near-optimal performance in terms of average waiting time and significantly outperforms the existing algorithms. 2005-05-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/587 info:doi/10.1145/1071246.1071252 https://ink.library.smu.edu.sg/context/sis_research/article/1586/viewcontent/MDM05_final.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University wireless broadcast mobile computing multiple channels scheduling Databases and Information Systems Numerical Analysis and Scientific Computing
institution Singapore Management University
building SMU Libraries
continent Asia
country Singapore
Singapore
content_provider SMU Libraries
collection InK@SMU
language English
topic wireless broadcast
mobile computing
multiple channels
scheduling
Databases and Information Systems
Numerical Analysis and Scientific Computing
spellingShingle wireless broadcast
mobile computing
multiple channels
scheduling
Databases and Information Systems
Numerical Analysis and Scientific Computing
ZHENG, Baihua
XU, Xia
JIN, Xing
LEE, Dik Lun
TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
description Wireless broadcast is very suitable for delivering information to a large user population. In this paper, we concentrate on data allocation methods for multiple broadcast channels. To the best of our knowledge, this is the first allocation model that takes into the consideration of items' access frequencies, items' lengths. and bandwidth of different channels. We first derive the optimal average expected delay for multiple channels for the general case where data access frequencies, data sizes, and channel bandwidths can all be non-uniform. Second, we develop TOSA, a multi-channel allocation method that does not assume a uniform broadcast schedule for data items on the same channel. TOSA is based on the idea of two-level data allocation, i.e., a high-level optimization step for allocating data to the channels, followed by a low-level optimization step to schedule data within a channel. We show that TOSA achieves near-optimal performance in terms of average waiting time and significantly outperforms the existing algorithms.
format text
author ZHENG, Baihua
XU, Xia
JIN, Xing
LEE, Dik Lun
author_facet ZHENG, Baihua
XU, Xia
JIN, Xing
LEE, Dik Lun
author_sort ZHENG, Baihua
title TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
title_short TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
title_full TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
title_fullStr TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
title_full_unstemmed TOSA: A Near-Optimal Scheduling Algorithm for Multi-Channel Data Broadcast
title_sort tosa: a near-optimal scheduling algorithm for multi-channel data broadcast
publisher Institutional Knowledge at Singapore Management University
publishDate 2005
url https://ink.library.smu.edu.sg/sis_research/587
https://ink.library.smu.edu.sg/context/sis_research/article/1586/viewcontent/MDM05_final.pdf
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