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Configuring 802.11n rates – H3C Technologies H3C MSR 50 User Manual

Page 35

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26

Step Command

Remarks

127.

Configure rates for 802.11b.

dot11b { disabled-rate |
mandatory-rate | multicast-rate |

supported-rate } rate-value

Optional.
By default, no rates are disabled.

Mandatory rates are 1 and 2. The
multicast rate is automatically

selected from mandatory rates.

Supported rates are 5.5 and 11.

128.

Configure rates for 802.11g.

dot11g { disabled-rate |
mandatory-rate | multicast-rate |

supported-rate } rate-value

Optional.
By default, no rates are disabled.

Mandatory rates are 1, 2, 5.5,

and 11. The multicast rate is
automatically selected from

mandatory rates. Supported rates

are 6, 9, 12, 18, 24, 36, 48, and
54.

Configuring 802.11n rates

The following matrix shows the feature and router compatibility:

Feature

MSR 900 MSR 930

MSR

20-1X

MSR 20

MSR 30

MSR 50

MSR

2600

802.11n No

Available
for MSR

930
(WLAN &

HSPA+),

MSR 930

(WLAN &
EVDO), and

MSR 930

(WLAN)

Available
for routers

with a
SIC_WLAN

module that

supports

802.11n

Available
for routers
with a

SIC_WLA

N module

that
supports

802.11n

Available
for routers
with a

SIC_WLA

N module

that
supports

802.11n

Available
for routers
with a

SIC_WLA

N module

that
supports

802.11n

Available
for routers
with a

SIC_WLA

N module

that
supports

802.11n

Configuration of mandatory and supported 802.11n rates is achieved by specifying the maximum

Modulation and Coding Scheme (MCS) index. The MCS data rate table shows relations between data

rates, MCS indexes, and parameters that affect data rates. A sample MCS data rate table (20 MHz) is

shown in

Table 1

, and a sample MCS data rate table (40 MHz) is shown in

Table 2

.

As shown in the two tables, MCS 0 through MCS 7 use one spatial stream, and the data rate

corresponding to MCS 7 is the highest; MCS 8 through MCS 15 use two spatial streams, and the data

rate corresponding to MCS 15 is the highest.

Table 1 MCS data rate table (20 MHz)

MCS index

Number of spatial

streams

Modulation

Data rate (Mbps)
800ns GI

400ns GI

0 1 BPSK

6.5 7.2

1 1 QPSK

13.0 14.4

2 1 QPSK

19.5 21.7

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