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Chapter 12: BlueSecure Access Points
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2.
BSAP1700: MIMO Network Density: Network Density refers to how many wireless
networks are deployed in your surroundings. This setting provides a mechanism to tell
the AP how noisy to expect the environment so the AP can then adjust its noise
threshold accordingly. The settings are subjective (i.e. there is no static range of
devices associated with the settings high, medium, and low) and might require some
experimentation to determine the optimal setting. A site survey should help determine
the network density in your environment. Note that adjusting the network density
affects transmit power and overall system performance.
BSAP1700: Adaptive Channel Expansion (Requires a special client adapter)
3.
Provides increased data rates by increasing the RF bandwidth from 20 MHz to 40
MHz by combining adjacent channels. Adaptive Channel Expansion/Channel
Bandwidth enables the following rates --48, 72, 84, 96, 144, 160, 168, 192, 216,
240 Mbps.
Here is an example of the channel usage in ACE: - primary and secondary channels
are separated by 4 channels.
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The BSAP automatically determines the secondary channel based on channel set in
the UI. If you enable auto channel selection, the BSAP first determines the primary
through an auto channel selection algorithm and then sets the secondary 4 channels
away.
Before you enable this feature, make sure that the channels are available in your RF
network. Otherwise, you could experience degraded performance with MIMO
Concatenation Mode/Packet Aggregation. All 20Mhz traffic and the management
frames are always sent on the primary channel.
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BSAP1700: MIMO Concatenation Mode: Used to transmit multiple data packets in a
4.
single 802.11 frame, without any delay.
5.
BSAP1800: Channel Bandwidth: Provides increased data rates by increasing the RF
bandwidth from 20 MHz to 40 MHz by combining adjacent channels. Channel
Bandwidth enables the following rates up to 300Mhz.
BSAP1800: Packet Aggregation (Aggreation of Protocol Data Units AMPDU): Used
6.
to transmit multiple data packets in a single 802.11 frame, without renegotiating for
the medium.
Performance Tip: For optimal 802.11n performance/throughput, ensure the following:
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Use 802.11n client devices.
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Enable Voice Call Admission Control.
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Enable Channel Bandwidth (40MHz).
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Enable Packet Aggregation.
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Use an Open or AES SSID (not WEP or TKIP).
12-16
1 = Enabled
1 is primary, 5 is secondary
6 is primary, 2 is secondary
7 is primary, 11 is secondary
11 is primary, 7 is secondary
9 is primary, 13 is secondary (Europe/countries that support channel 13)
0 = Disabled
1 = Enabled
2 = Enable if no legacy BSS (i.e. no legacy AP detected)
3 = Enabled if no legacy device (i.e. no legacy station is detected)
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