Adaptive Power-Aware Prefetching Schemes for Mobile Broadcast Environments

  • Haibo Hu
  • Jianliang Xu
  • Dik Lun Lee
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2574)


Caching and prefetching are common techniques in mobile broadcast environments. Several prefetching policies have been proposed in the literature to either achieve the minimum access latency or save power as much as possible. However, little work has been carried out to adaptively balance these two metrics in a dynamic environment where the user request arrival patterns change over time. This paper investigates how both low latency and low power consumption can be achieved for dynamic request patterns. Two adaptive power-aware schemes, PT with secure region (PTSR) and adaptive prefetching with sliding caches (APSC), are proposed. Experimental results show the proposed policies, in particular APSC, achieve a much lower power consumption while maintaining a similar access latency as the existing policies.


Time Slot Cache Size Secure Region Access Latency Object Unit 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Haibo Hu
    • 1
  • Jianliang Xu
    • 1
  • Dik Lun Lee
    • 1
  1. 1.Department of Computer ScienceHong Kong University of Science and TechnologyHong Kong

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