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A generalised cost-aware caching scheme for caching continuous media objects in best-effort network environments
conference contribution
posted on 2002-01-01, 00:00 authored by W Lau, M Kumar, Svetha VenkateshSvetha VenkateshIn this paper, we investigate the potential of caching to improve QoS in the context of continuous media applications over wired best-effort networks. We propose the use of a flexible caching scheme, called GD-Multi in caching continuous media (CM) objects. An important novel feature of our scheme is the provision of user or system administrator inputs in determining the cost function. Based on the proposed flexible cost function, Multi, an improvised Greedy Dual (GD) replacement algorithm called GD-multi (GDM) has been developed for layered multi-resolution multimedia streams. The proposed Multi function takes receiver feedback into account. We investigate the influence of parameters such as loss rate, jitter, delay and area in determining a proxy’s cache contents so as to enhance QoS perceived by clients. Simulation studies show improvement in QoS perceived at the clients in accordance to supplied optimisation metrics. From an implementation perspective, signalling requirements for carrying QoS feedback are minimal and fully compatible with existing RTSP-based Internet applications.
History
Event
International Workshop on Distributed Computing (4th : 2002 : Calcutta, India)Pagination
12 - 23Publisher
SpringerLocation
Calcutta, IndiaPlace of publication
Berlin, GermanyPublisher DOI
Start date
2002-12-28End date
2002-12-31ISSN
0302-9743ISBN-10
354000355XLanguage
engPublication classification
E1.1 Full written paper - refereedCopyright notice
2002, Springer-Verlag Berlin HeidelbergEditor/Contributor(s)
S Das, S BhattacharyaTitle of proceedings
IWDC 2002 : Distributed computing : mobile and wireless computing : 4th international workshop proceedingsUsage metrics
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