NDLI: Performance comparison of cache invalidation strategies for Internet-based mobile ad hoc networks

Content Provider	IEEE Xplore Digital Library
Author	Sunho Lim Wang-Chien Lee Guohong Cao Das, C.R.
Copyright Year	2004
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Pennsylvania State Univ., University Park, PA, USA (Sunho Lim; Wang-Chien Lee; Guohong Cao; Das, C.R.)
Abstract	Internet-based mobile ad hoc network (IMANET) combines a mobile ad hoc network (MANET) and the Internet to provide universal information accessibility. Although caching frequently accessed data items in mobile terminals (MTs) improves the communication performance in an IMANET, it brings a critical design issue when data items are updated. We analyze several push and pull-based cache invalidation strategies for IMANETS. A global positioning system (GPS) based connectivity estimation (GPSCE) scheme is first proposed to assess the connectivity of an MT for supporting any cache invalidation mechanism. Then, we propose a pull-based approach, called aggregate cache based on demand (ACOD) scheme, to find the queried data items efficiently. In addition, we modify two push-based cache invalidation strategies, proposed for cellular networks, to work in IMANETs. These are a modified timestamp (MTS) scheme, and an MTS with updated invalidation report (MTS+UIR) scheme. Simulation results indicate that our proposed strategy provides high throughput, low query latency, and low communication overhead, and thus, is a viable approach for implementation in IMANETS.
Starting Page	104
Ending Page	113
File Size	682234
Page Count	10
File Format	PDF
ISBN	0780388151
DOI	10.1109/MAHSS.2004.1392084
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computer science Network topology Aggregates Land mobile radio cellular systems Mobile communication IP networks Personal digital assistants Delay Mobile ad hoc networks Global Positioning System
Content Type	Text
Resource Type	Article

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