A Continuous Media Communication Service and its Implementation

			     Domenico Ferrari
				 Amit Gupta
				 Mark Moran

			 Computer Science Division
		    University of California at Berkeley
		and International Computer Science Institute
			    Berkeley, California

				    and

			      Bernd Wolfinger

	      University of Hamburg, Computer Science Dept.,
		   Vogt-Koelln-Str. 30, D-2000 Hamburg 54

				  ABSTRACT

	     Continuous media (CM) traffic often requires more  net-
	work throughput and more stringent delay bounds than conven-
	tional discrete media traffic.  At the same time,  transmis-
	sion  requirements  of  CM  traffic can usually be estimated
	more accurately, both in terms of the resources required for
	transmission  and  the  time  at which the next transmission
	request will occur.   A  data  transport  service  has  been
	designed  that uses these considerations to provide a richer
	and more efficient service to CM traffic than  message-based
	transport  services.   This paper briefly describes the ser-
	vice and a prototype implementation.  The  service  is  then
	evaluated  via  simulation  experiments, which indicate that
	this service can often utilize network resources more  effi-
	ciently  for  the  transmission  of CM traffic than message-
	based services.