H3c-technologies H3C WA2600 Series WLAN Access Points Uživatelský manuál stáhnout pdf (Strana 43)

6-2

Task Remarks

Configuring Data Transmission Rates Optional

Configuring Power Constraint Optional

Configuring Only Non-802.11h Channels to Be Scanned Optional

Enabling 802.11g Protection Optional

Configuring Data Transmission Rates

Configuring 802.11a/802.11b/802.11g Rates

Follow these steps to configure 802.11a/802.11b/802.11g rates:

To do… Use the command… Remarks

Enter system view

system-view

—

Enter WLAN RRM view

wlan rrm

—

Configure rates (in Mbps) for

802.11a

dot11a

{

disabled-rate

mandatory-rate

supported-rate

} rate-value

Optional

By default, mandatory rates are 6,

12, and 24; supported rates are 9,

18, 36, 48, and 54; no rates are

disabled.

Configure rates for 802.11b

dot11b

{

disabled-rate

mandatory-rate

supported-rate

} rate-value

Optional

By default, mandatory rates are 1

and 2; supported rates are 5.5 and

11; no rates are disabled.

Configure rates for 802.11g

dot11g

{

disabled-rate

mandatory-rate

supported-rate

} rate-value

Optional

By default, mandatory rates are 1,

2, 5.5 and 11; supported rates are

6, 9, 12, 18, 24, 36, 48 and 54; no

rates are disabled.

Configuring 802.11n Rates

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 is shown in

Table 6-1. For the whole table, see IEEE P802.11n D2.00.

Table 6-1 MCS data rate table

Data rate (Mbps)

MCS index Modulation

800ns GI 400ns GI

0 BPSK 6.5 7.2

1 QPSK 13.0 14.4

2 QPSK 19.5 21.7

3 16-QAM 26.0 28.9

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 83 84

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