... admissible load based on burst-scale loss analysis
Use: admission control in ATM (burst-scale component in SBR) or IP (e.g.
voice-over -IP with silence suppression) for delay-sensitive VBR
traffic
Formulas: ... N·D/D/1 analysis
Use: admission control in ATM (for DBR, i.e. cell-scale component) or IP
(e.g. voice-over -IP with fixed packet sizes) for constant-bit-rate traffic
(continued...
... 2000 John Wiley & Sons Ltd
ISBNs: 0-4 7 1-4 9187-X (Hardback); 0-4 7 0-8 416 6-4 (Electronic)
90
TRAFFIC MODELS
telephony, which has a cell rate of 167 cell/s in ATM. The next step is
to consider an ... one used for ATM or IP. Source models may be classified in
a variety of ways: continuous time or discrete time, inter-arrival time or
counting process, state-based or distribu...
... Ltd
ISBNs: 0-4 7 1-4 9187-X (Hardback); 0-4 7 0-8 416 6-4 (Electronic)
122
CELL-SCALE QUEUEING
Source
1
Source
2
Source
N
.
.
.
Source
1
Source
2
Source
N
.
.
.
2 × 2 ATM
switching
element
Source
multiplexer
Source
multiplexer
Figure ... from this is called ‘cell-scale
queueing’.
MULTIPLEXING CONSTANT-BIT-RATE TRAFFIC
Let us now take a closer look at what happens when we have cons...