Configuring Mcs Rates - Cisco 1941W Configuration Manual

Chapter Configuring Radio Settings
Command
Step 4
end
Step 5
copy running-config
startup-config
Use the no form of the speed command to remove one or more data rates from the configuration. This
example shows how to remove data rates basic-2.0 and basic-5.5 from the configuration:
ap1200# configure terminal
ap1200(config)# interface dot11radio 0
ap1200(config-if)# no speed basic-2.0 basic-5.5
ap1200(config-if)# end

Configuring MCS Rates

Modulation coding scheme (MCS) is a specification of PHY parameters consisting of modulation order
(binary phase shift keying [BPSK], quaternary phase shift keying [QPSK], 16-quadrature amplitude
modulation [16-QAM], 64-QAM) and forward error correction (FEC) code rate (1/2, 2/3, 3/4, 5/6). MCS
is used in the wireless device 802.11n radios, which define 32 symmetrical settings (8 per spatial
stream):
•
•
•
•
The wireless device supports MCS 0–15. High-throughput clients support at least MCS 0–7.
MCS is an important setting because it provides for potentially greater throughput. High-throughput data
rates are a function of MCS, bandwidth, and guard interval. The 802.11a, b, and g radios use 20-MHz
channel widths.
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Purpose
Returns to privileged EXEC mode.
(Optional) Saves your entries in the configuration file.
MCS 0–7
MCS 8–15
MCS 16–23
MCS 24–31
Table 1 shows potential data rated based on MCS, guard interval, and channel width.
Configuring MCS Rates
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