Analysis of on-off source shaping for ATM multiplexing

A traffic shaper for supporting CBR and VBR services in ATM networks

“…In this paper, a new ATM traffic shaper has been proposed for supporting both CBR and VBR traffic. This shaper has considered and resolved the emission conflict problem that other designs [1][2][3][4][5][6][7][8][9][10] did not. With an EDD scheduler, the jitter violation ratio for CBR and the scheduling overdue events for VBR, due to cell emission conflicts, can be reduced significantly.…”

“…Since traffic management became an important topic in the ATM research arena, many traffic shapers or cell spacing devices have been proposed to reduce the burstiness of the traffic streams [1][2][3][4][5][6][7][8][9][10][11]. The concept of a traffic shaper or cell spacer is to store the input cells in a buffer and then output them at eligible times.…”

“…Traffic shaping is implemented by a sliding window mechanism followed by a peak bit rate reduction mechanism in [6]. In [7,8], the concept of a multiple level shaping algorithm is introduced. In the latter design, the cell emission rate is determined by the buffer occupancy level of the shaper so that overall performance can be improved.…”

“…In most of these papers, e.g. [1,5,8,10], the assumed models include multiple traffic streams passing through separate spacing devices and a second-stage multiplexer before cell emission. If two cells from different connections are assigned the same eligible time to enter the multiplexer to be emitted, then the cell emission conflict occurs.…”