Cisco Cisco Cius 4G 디자인 가이드
Cisco Cius Wireless Deployment Guide
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5 GHz channels overlap their adjacent channel, so there should be at least 1 channel of separation for adjacent access points.
Need to ensure there is at least 20 percent overlap with adjacent channels when deploying Cisco Cius in the 802.11a/n
environment, which allows for seamless roaming. For critical areas, it is recommended to increase the overlap (30% or more)
to ensure that there can be at least 2 access points available with a signal of-67 dBm or higher, while Cisco Cius also meets the
access point’s receiver sensitivity (required signal level for the current data rate).
Need to ensure there is at least 20 percent overlap with adjacent channels when deploying Cisco Cius in the 802.11a/n
environment, which allows for seamless roaming. For critical areas, it is recommended to increase the overlap (30% or more)
to ensure that there can be at least 2 access points available with a signal of-67 dBm or higher, while Cisco Cius also meets the
access point’s receiver sensitivity (required signal level for the current data rate).
Using Dynamic Frequency Selection (DFS) on Access Points
For Cisco Autonomous Access Points, select Dynamic Frequency Selection (DFS) to use auto channel selection.
When DFS is enabled, enable at least one band (bands 1-4).
For Cisco Unified Access Points, enable Auto RF unless there is an intermittent interferer in an area, which select access points
can have the channel statically assigned.
If there are repeated radar events detected by the access point (just or falsely), determine if the radar signals are impacting a
single channel (narrowband) or multiple channels (wideband), then potentially disable use of that channel or channels in the
wireless LAN.
The presence of an AP on a non-DFS channel can help minimize voice interruptions.
In case of radar activity, have at least one access point per area that uses a non-DFS channel (UNII-1). This ensures that a
channel is available when an access point’s radio is in its hold-off period while scanning for a new usable channel.
For Cisco Autonomous Access Points, enable band 1 only, which allows the access point to use only a UNII-1 channel.
For Cisco Unified Access Points, can manually select a UNII-1 channel (channels 36, 40, 44, 48) for the desired access points.
A UNII-3 channel (5.745 - 5.825 GHz) can optionally be used if available.
In this diagram, 5 GHz cells use a non-DFS channel while other nearby cells use DFS channels to permit maximum call
capacity under all conditions.
When DFS is enabled, enable at least one band (bands 1-4).
For Cisco Unified Access Points, enable Auto RF unless there is an intermittent interferer in an area, which select access points
can have the channel statically assigned.
If there are repeated radar events detected by the access point (just or falsely), determine if the radar signals are impacting a
single channel (narrowband) or multiple channels (wideband), then potentially disable use of that channel or channels in the
wireless LAN.
The presence of an AP on a non-DFS channel can help minimize voice interruptions.
In case of radar activity, have at least one access point per area that uses a non-DFS channel (UNII-1). This ensures that a
channel is available when an access point’s radio is in its hold-off period while scanning for a new usable channel.
For Cisco Autonomous Access Points, enable band 1 only, which allows the access point to use only a UNII-1 channel.
For Cisco Unified Access Points, can manually select a UNII-1 channel (channels 36, 40, 44, 48) for the desired access points.
A UNII-3 channel (5.745 - 5.825 GHz) can optionally be used if available.
In this diagram, 5 GHz cells use a non-DFS channel while other nearby cells use DFS channels to permit maximum call
capacity under all conditions.