Compression-based broadcast strategies in wireless information systems

Chao-Chun Chen, Chiang Lee, Chih-Horng Ke
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引用次数: 2

Abstract

Data delivery is through broadcast in wireless information systems due to the asymmetric communication property. However, broadcasting data easily wastes large access time because the large amount of data pages needs to be broadcast. In this paper we propose three compression-based strategies considering access order to reduce access time. Then, the expected access time of three proposed strategies is also derived by using the probability model. Our analytic and experimental results show that the compression-based broadcast strategies can dramatically reduce the access time for mobile users (MU).
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无线信息系统中基于压缩的广播策略
由于无线信息系统的非对称通信特性,数据传输采用广播方式。但是,广播数据容易浪费大量的访问时间,因为需要广播大量的数据页。本文提出了三种考虑访问顺序的压缩策略,以减少访问时间。然后,利用概率模型推导出三种策略的期望访问时间。分析和实验结果表明,基于压缩的广播策略可以显著减少移动用户(MU)的访问时间。
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