Title :
Queueing analyses of traffic access control strategies with preemptive and nonpreemptive disciplines in wideband integrated networks
Author :
Ngo, B. ; Lee, H.
Author_Institution :
Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada
fDate :
9/1/1991 12:00:00 AM
Abstract :
A multiserver queueing model of access control strategies for a wideband integrated services digital network (ISDN) is considered. There are two types of service requests (SRs): Type 1 SR requires b servers (basic bandwidth units, BBUs) of the c available servers, while Type 2 SR requires a single server. Both types of SRs are queuable in two separate infinite-size buffers. A Type 1 SR is allowed to seize d(⩽b) servers at first and then acquire additional servers as they become available to meet the original requirement of b servers. The arrival processes of both types of SRs are Poisson and the service times are exponentially distributed with mean b/dμ1 and 1/μ2 for Type 1 SR and Type 2 SR, respectively. Preemptive and nonpreemptive priority disciplines with movable boundary are analyzed using the Neuts´ matrix-analytic approach. Numerical examples of the queue length distribution and the mean waiting time of the SRs are presented
Keywords :
ISDN; broadband networks; queueing theory; telecommunication traffic; B-ISDN; Neuts matrix-analytic approach; mean waiting time; multiserver queueing model; nonpreemptive priority; preemptive priority; queue length distribution; service requests; traffic access control strategies; wideband integrated networks; Access control; Bandwidth; Communication system traffic control; ISDN; Network servers; Queueing analysis; Strontium; Time division multiplexing; Traffic control; Wideband;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
