Comparison of UPC mechanisms in a DQDB/B-ISDN gateway

Author

Gagnaire, Maurice ; Thelen, Anke

Author_Institution

Ecole Nat. Superieure des Telecommun., Paris, France

fYear

1994

fDate

1994

Firstpage

108

Lastpage

117

Abstract

In B-ISDN, a policing function such as usage parameter control (UPC) is mandatory to constraint the cell flow of a new connection to respect its contract. The case of a user accessing B-ISDN via a DQDB metropolitan area network (MAN) is considered. One assumes that this user generates a variable bit rate (VBR) traffic towards the user network interface (UNI). We investigate the influence of the internal DQDB traffic on the time structure of this VBR cell flow when it enters the DQDB/B-ISDN gateway. We then consider two UPC functions which are the leaky bucket and the spacer-controller to police the VBR connection. The efficiency of each of these two UPC mechanisms is evaluated in terms of the cell delay variation and dynamics. The influence of several source parameters such as the mean bit rate, the peak bit rate and the burstiness on UPC efficiency is investigated

Keywords

B-ISDN; access protocols; asynchronous transfer mode; delays; internetworking; metropolitan area networks; telecommunication congestion control; telecommunication traffic; ATM; DQDB; DQDB/B-ISDN gateway; MAN; UNI; UPC efficiency; UPC mechanisms; burstiness; cell delay variation; cell dynamics; cell flow; congestion control; leaky bucket; mean bit rate; metropolitan area network; peak bit rate; policing function; source parameters; spacer-controller; usage parameter control; user network interface; variable bit rate traffic; Asynchronous transfer mode; B-ISDN; Bandwidth; Bit rate; Contracts; Delay; Network interfaces; Streaming media; Switches; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Local Computer Networks, 1994. Proceedings., 19th Conference on

Conference_Location

Minneapolis, MN

Print_ISBN

0-8186-6680-3

Type

conf

DOI

10.1109/LCN.1994.386609

Filename

386609