Title :
Designing an on-demand multimedia service
Author :
Rangan, P. Venkat ; Vin, Harrick M. ; Ramanathan, Srinivas
Author_Institution :
Dept. of Comput. Sci. & Eng., California Univ., San Diego, CA, USA
fDate :
7/1/1992 12:00:00 AM
Abstract :
A quantitative study of techniques for designing a high-performance multiuser multimedia on-demand information service is presented. The problem of maintaining continuity of playback of each media stream in the presence of multiple subscriber requests is formulated, and admission control algorithms that permit a multimedia server to satisfy the maximum number of subscribers simultaneously are presented. A feedback technique in which a multimedia service uses lightweight messages called feedback units that are transmitted back to it by subscribers´ mediaphones to detect asynchrony among them and steer them back to synchrony thereafter is presented. The feedback technique guarantees synchronous playback of media streams transmitted by the multimedia server to subscribers over metropolitan-area networks.<>
Keywords :
computer networks; feedback; multimedia systems; telecommunication services; admission control algorithms; continuity of playback; feedback technique; lightweight messages; metropolitan-area networks; multimedia service; multiple subscriber requests; multiuser service; on-demand information service; synchronous playback; B-ISDN; Bandwidth; Computer science; Costs; Information retrieval; Motion pictures; Network servers; Optical arrays; Optical devices; Streaming media;
Journal_Title :
Communications Magazine, IEEE
