F. I. C. A.
Flexible Integrated Caching Approach for Efficient Content Delivery in Wireless Internet
|Start Date||January 02, 2002|
|End Date||December 31, 2003 (extended to August 2004)|
|Budgeted Funds||$66,000 ( Intial Grant )|
|$8,100 ( 2002 Supplemental H.S. Teacher Grant )|
|$8,100 ( 2003 Supplemental H.S. Teacher Grant )|
|Investigator||Nelson L. Passos|
Moreover, these static schemes do not adapt to changing resource availability. An adaptive scheme called Flexible Integrated Caching Approach (FICA) which dynamically maintains an optimal set of documents proximal to mobile clients is proposed. The optimal set is selected from a combination of cached, prefetched, and push cached items, each with a weighted profit value based on its hit ratio, delay saving ratio, prefetch gain and size, available network bandwidth, clients' mobility profile and QoS requirements. Here cache refers to the available disk space at mobile hosts and base stations. The goal of FICA is to optimize profit in terms of resource (bandwidth and disk space) utilization, and minimize overall response time by prefetching/transmitting documents in anticipation. Due to its tunability to user/system requirements, FICA is well suited for scalable wireless Internet applications. The main contributions of the project include, 1) development of algorithms for computing the utility of documents, 2) development of optimization schemes for determining the optimal set of documents in the cache, 3) development and testing of software that implements the above algorithms in an experimental wireless Internet. A software suite will be developed to to experimentally validate proposed algorithms and models under various user and networking conditions. Graduate students will be exposed to research outcomes in courses on distributed systems, wireless networks, and mobile computing. Published papers, reports and software will be shared in the public domain.
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Last Updated: April 6, 2004 since March 2, 2000.