Cisco WAP150 Manual page 58

Radio
• 2.4 GHz 802.11n — 802.11n clients operating in the 2.4-GHz frequency can connect to the WAP device.
Radio 2(5G) supports the following radio modes:
• 802.11a — 802.11a clients can connect to the WAP device.
• 802.11a/n/ac — 802.11a clients, 802.11n, and 802.11ac clients operating in the 5-GHz frequency can connect
to the WAP device.
• 802.11n/ac — 802.11n clients and 802.11ac clients operating in the 5-GHz frequency can connect to the WAP
device
• Wireless Band Selection (802.11n and 802.11ac modes only) — The 802.11n specification allows a coexisting
20/40 MHz band in addition to the legacy 20 MHz band available with other modes. The 20/40 MHz band enables
higher data rates but leaves fewer bands available for use by other 2.4 GHz and 5 GHz devices.
The 802.11ac specification allows an 80 MHz-wide band in addition to the 20 MHz and 40 MHz band.
Set the field to 20 MHz to restrict the use of the wireless band selection to a 20 MHz band. For the 802.11ac mode,
set the field to 40 MHz to prevent the radio from using the 80 MHz wireless band selection.
• Primary Channel (802.11n modes with 20/40 MHz bandwidth only) — A 40 MHz channel can be considered
to consist of two 20-MHz channels that are contiguous in the frequency domain. These two 20-MHz channels are
often referred to as the primary and secondary channels. The primary channel is used for 802.11n clients that support
only a 20-MHz channel bandwidth and for legacy clients.
Choose one of these options:
• Upper — Sets the primary channel as the upper 20-MHz channel in the 40-MHz band.
• Lower — Sets the primary channel as the lower 20-MHz channel in the 40-MHz band. Lower is the default
selection.
• Channel — The portion of the radio spectrum that the radio uses for transmitting and receiving.
The range of available channels is determined by the mode of the radio interface and the country code setting. If
you select Auto for the channel setting, the WAP device scans available channels and selects a channel where the
least amount of traffic is detected.
Each mode offers a number of channels, depending on how the spectrum is licensed by national and transnational
authorities such as the Federal Communications Commission (FCC), the International Telecommunication Union
(ITU-R) or the European Telecommunications Standards Institute (ETSI).
• Scheduler — For the radio interface, select the profile from the list. The default value is None.
To create a profile, navigate to Wireless > Scheduler.
Note
Step 5
In the Advanced Settings area, configure these parameters:
• Short Guard Interval Supported — This field is available only if the selected radio mode includes 802.11n. The
guard interval is the dead time, in nanoseconds, between OFDM symbols. The guard interval prevents Inter-Symbol
and Inter-Carrier Interference (ISI, ICI). The 802.11n mode allows for a reduction in this guard interval from the a
and g definition of 800 nanoseconds to 400 nanoseconds. Reducing the guard interval can yield a 10 percent
improvement in data throughput. The client with which the WAP device is communicating must also support the
short guard interval.
Choose one of these options:
Cisco WAP150 Wireless-AC/N Dual Radio Access Point with PoE / Cisco WAP361 Wireless-AC/N Dual Radio Wall Plate Access Point with PoE
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Wireless