Analytic Study of Multiplexing Effects in Two-Class Queues with Correlations
Conference: MMB 2006 - 13th GI/ITG Conference Measuring, Modelling and Evaluation of Computer and Communication Systems
03/27/2006 - 03/29/2006 at Nürnberg, Germany
Proceedings: MMB 2006
Pages: 18Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Heindl, Armin; Gross, Karsten (Universität Erlangen-Nürnberg, Computer Networks and Communication Systems, Computer Networks and Communication Systems)
An improved (i.e., reduced) quasi-birth-death representation of a FIFO queue with two separate traffic streams (and dedicated service processes) is combined with ETAQA truncation to yield scalable finite approximations of the two departure processes from this queue. Via matrix-analytic techniques, these models may be used to study various arrival/service interdependences between the two traffic streams, as important to ensure optimal QoS in networks composed of such systems with correlated processes. In this paper, we investigate how the first moments and the autocorrelation of one service process affect both output processes and, subsequently, the performance of downstream queues to which the split departure processes are directed. The approximate analytic results are validated by simulation.