Cisco 4G-LTE-ANTM-O-3 Installation Guide download pdf (Page 221)

PurposeCommand or Action

allow both 802.11b and 802.11g client devices to associate to the wireless

device 802.11g radio.

On the 5-GHz radio, the default option sets rates 6.0, 12.0, and 24.0 to basic,

and stes rates 9.0, 18.0, 36.0, 48.0, and 54.0 to enabled.

On the 802.11g/n 2.4-GHz radio, the default option sets rates 1.0, 2.0, 5.5,

and 11.0 to enabled.

On the 802.11g/n 5-GHz radio, the default option sets rates to 6.0, 12.0, and

24.0 to enabled.

The modulation coding scheme (MCS) index range for both 802.11g/n radios

is 0 to 15.

Returns to privileged EXEC mode.end

Step 4

(Optional) Saves your entries in the configuration file.copy running-config startup-config

Step 5

Configuration Example: Configuring Radio Data Rates

This example shows how to configure data rates basic-2.0 and basic-5.5 from the configuration:

ap1200# configure terminal

ap1200(config)# interface dot11radio 0

ap1200(config-if)# 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):

• MCS 0–7

• MCS 8–15

• MCS 16–23

• MCS 24–31

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. Table 25: Data Rates Based on MCS Settings, Guard Interval, and Channel Width , on page 194 shows

potential data rated based on MCS, guard interval, and channel width.

Cisco 800 Series Integrated Services Routers Software Configuration Guide

OL-31704-02 193

Configuring Wireless Devices

Configuring MCS Rates

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Cisco 4G-LTE-ANTM-O-3 Installation Guide Page 221