Proceedings ArticleDOI
Energy-efficient caching for wireless mobile computing
Kung-Lung Wu,Philip S. Yu,Ming-Syan Chen +2 more
- pp 336-343
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TLDR
An energy-efficient cache invalidation method, called GCORE (Grouping with COld update-set REtention), that allows a mobile computer to operate in a disconnected mode to save the battery while still retaining most of the caching benefits after a reconnection is presented.Abstract:
Caching can reduce the bandwidth requirement in a mobile computing environment. However, due to battery power limitations, a wireless mobile computer may often be forced to operate in a doze (or even totally disconnected) mode. As a result, the mobile computer may miss some cache invalidation reports broadcast by a server, forcing it to discard the entire cache contents after waking up. In this paper, we present an energy-efficient cache invalidation method, called GCORE (Grouping with COld update-set REtention), that allows a mobile computer to operate in a disconnected mode to save the battery while still retaining most of the caching benefits after a reconnection. We present an efficient implementation of GCORE and conduct simulations to evaluate its caching effectiveness. The results show that GCORE can substantially improve mobile caching by reducing the communication bandwidth (or energy consumption) for query processing.read more
Citations
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Journal ArticleDOI
Sdci: scalable distributed cache indexing for cache consistency for mobile environments
TL;DR: By observing Comprehensive simulation results, it can be seen that the performance of SDCI is superior to those of existing algorithms.
Book ChapterDOI
A category on the cache invalidation for wireless mobile environments
Jian-Pei Zhang,Yan Chu,Jing Yang +2 more
TL;DR: A category on the cache invalidation is proposed and a mathematical model is proposed to evaluate system performance and develop high performance cache technique for practical wireless mobile computing.
Proceedings ArticleDOI
Efficient Bandwidth Utilization in Mobile Environments for Cache Consistency Using Queried Data (CCUQD) Approach
TL;DR: A novel algorithm called Cache Consistency Using Queried Data (CCUQD) is proposed which maintains cache consistency by broadcasting IRs periodically and maximizes bandwidth utilization by making a batch and delaying the broadcast of queried data by the MU to the server.
Journal ArticleDOI
Scalability study of cache access mechanisms in multiple-cell wireless networks
TL;DR: A comprehensive study to compare four strong-consistent cache access algorithms including the invalidation report (IR), poll-each-read (PER), call-back (CB), and Lease schemes in multiple-cell wireless/mobile networks, finding that the IR schemes do not perform well in a multiple- cell wireless/ mobile networks with a large update rate, database size, and IR window size.
References
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Journal ArticleDOI
Mobile wireless computing: challenges in data management
Proceedings Article
Sleepers and Workaholics: Caching Strategies in Mobile Environments
Daniel Barbará,Tomasz Imielinski +1 more
TL;DR: In this paper, a taxonomy of different cache invalidation strategies and study the impact of client's disconnection times on their performance is presented, and the authors determine that for the units which are often disconnected (sleepers) the best cache invalidization strategy is based on signatures previously used for efficient file comparison.
Proceedings ArticleDOI
Sleepers and workaholics: caching strategies in mobile environments
Daniel Barbará,Tomasz Imielinski +1 more
TL;DR: A taxonomy of different cache invalidation strategies is proposed and it is determined that for the units which are often disconnected (sleepers) the best cache invalidations strategy is based on signatures previously used for efficient file comparison, and for units which is connected most of the time (workaholics), the best Cache invalidation strategy isbased on the periodic broadcast of changed data items.
Proceedings ArticleDOI
Energy efficient indexing on air
TL;DR: This work describes two methods, (1,m) Indexing and Distributed Indexing, for organizing and accessing broadcast data and demonstrates that the proposed algorithms lead to significant improvement of battery life, while retaining a low access time.
Journal ArticleDOI
Adaptation and mobility in wireless information systems
TL;DR: The author begins by discussing the background, defining key terms and showing how wireless information systems can be viewed as a natural evolution of computing's relentless march toward greater distribution and ubiquity of access.
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