DocumentCode :
2965879
Title :
Supplying instantaneous video-on-demand services using controlled multicast
Author :
Gao, Lixin ; Towsley, Don
Author_Institution :
Dept. of Comput. Sci., Smith Coll., Northampton, MA, USA
Volume :
2
fYear :
1999
fDate :
36342
Firstpage :
117
Abstract :
We propose and evaluate the performance of a multicast technique, called controlled CIWP for supplying video-on-demand services. Similar to batching schemes, controlled CIWP allows two clients that request the same video to share a channel. Unlike batching, the controlled CIWP scheme does not delay the earlier request in order to promote sharing. Instead, sharing is ensured by permitting the client with the later arrival time to join an ongoing multicast session started for the earlier request. However, controlled CIWP does not let a client join an ongoing multicast session whenever possible. A threshold is used to control the frequency at which new multicast sessions are started. We derive the optimal threshold that maximizes the number of server channels required. Our simulation study shows that the controlled CIWP significantly improves the performance of the VOD service
Keywords :
client-server systems; multicast communication; multimedia communication; performance evaluation; telecommunication channels; video on demand; video servers; batching schemes; channel sharing; client server system; controlled CIWP; controlled multicast; erformance evaluation; instantaneous video-on-demand; optimal threshold; server channels; simulation; Bandwidth; Computer science; Delay; Educational institutions; Multicast algorithms; Network servers; Prefetching; Streaming media; Video sharing; Weight control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia Computing and Systems, 1999. IEEE International Conference on
Conference_Location :
Florence
Print_ISBN :
0-7695-0253-9
Type :
conf
DOI :
10.1109/MMCS.1999.778179
Filename :
778179
Link To Document :
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