Brocade Mobility Access Point System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 444)

434 Brocade Mobility Access Point System Reference Guide
53-1003100-01
6
802.11ac MCS rates are defined as follows both with and without short guard intervals (SGI):
Select the Fast BSS Transition option to enable 802.11r fast BSS transition support.
Fast BSS (802.11r) is an attempt to undo the burden that security and QoS added to the handoff
process, and restore it back to an original four message exchange process. The central application
for the 802.11r standard is VOIP using mobile phones within wireless Internet networks.
MCS Index Number of Streams 20 MHz
No SGI
20 MHz
With SGI 40 MHz
No SGI 40MHz
With SGI
0 2 13 14.4 27 30
1 2 26 28.9 54 60
2 2 39 43.4 81 90
3 2 52 57.8 108 120
4 2 78 86.7 162 180
5 2 104 115.6 216 240
6 2 117 130 243 270
7 2 130 144.4 270 300
MCS Index Number of Streams 20 MHz
No SGI
20 MHz
With SGI 40 MHz
No SGI 40MHz
With SGI
0 3 19.5 21.7 40.5 45
1 3 39 43.3 81 90
2 3 58.5 65 121.5 135
3 3 78 86.7 162 180
4 3 117 130.7 243 270
5 3 156 173.3 324 360
6 3 175.5 195 364.5 405
7 3 195 216.7 405 450
MCS Index 20 MHz
No SGI 20 MHz With
SGI 40 MHz
No SGI 40MHz
With SGI 80 MHz
No SGI 80MHz
With SGI
0 6.5 7.2. 13.5 15 29.3 32.5
1 13 14.4 27 30 58.5 65
2 19.5 21.7 40.5 45 87.8 97.5
3 26 28.9 54 60 117 130
4 39 43.3 81 90 175.5 195
5 52 57.8 108 120 234 260
6 58.5 65 121.5 135 263.3 292.5
7 65 72.2 135 150 292.5 325
8 78 86.7 162 180 351 390
9 n/a n/a 180 200 390 433.3