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  1. Proceedings of the 6th ACM international workshop on Data engineering for wireless and mobile access (MobiDE '07)
  2. Headlight prefetching for mobile media streaming
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Using sensorranks for in-network detection of faulty readings in wireless sensor networks
Ïnfïnïty: a generic platform for application development and information sharing on mobile devices
A drift-tolerant model for data management in ocean sensor networks
Snapshot density queries on location sensors
Practical algorithm for data security (PADS) in wireless sensor networks
Robust and fair trading in volatile environments: overcoming technical problems and uncooperativeness
Continuous monitoring of skyline query over highly dynamic moving objects
XIR: cache invalidation strategy for xml data in mobile environments
Robust management of outliers in sensor network aggregate queries
A Monte Carlo framework to evaluate context based security policies in pervasive mobile environments
Headlight prefetching for mobile media streaming

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Headlight prefetching for mobile media streaming

Content Provider ACM Digital Library
Author Wu, Shiow-yang Hsu, Jungchu Chen, Chieh-Ming
Abstract Multimedia information services in mobile environments are becoming more and more important with the proliferation of 3G technologies. Media streaming, in particular, is a promising technology for providing services such as news clips, live sports, and hot movies on the fly. To avoid service interruption when the users keep moving, proper data management strategies must be employed. We propose a new headlight prefetching technique for the streaming access points to deal with the uncertainty of client movement and the requirement of seamless service hand-off. For each mobile client, we maintain a virtual fan-shaped prefetching zone along the direction of movement similar to the headlight of a moving vehicle. The overlapping area and the accumulated virtual illuminance of the headlight zone on a particular cell determines the degree and volume of prefetching to be made by the streaming access point of that cell. Headlight prefetching solves the issues of identifying the streaming access points responsible for prefetching, the timing and the amount of data to prefetch in a single mechanism which is simple and effective. Simulation results demonstrate that our techniques can significantly decrease streaming disruptions, reduce bandwidth consumption, increase cache utilization and improve service response time.
Starting Page 67
Ending Page 74
Page Count 8
File Format PDF
ISBN 9781595937650
DOI 10.1145/1254850.1254862
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2007-06-10
Publisher Place New York
Access Restriction Subscribed
Subject Keyword Prefetching Media streaming Mobile data management
Content Type Text
Resource Type Article
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