Affected platforms: AX
Affected versions: 5.10.0 and newer
The Asymmetric Uplink Bandwidth feature is introduced for ePMP 4xxx/Force 4xxx. This feature allows configuring a narrower Uplink channel bandwidth while the Access Point (AP) continues operating on a wider Downlink channel. The Uplink channel remains within the same frequency range as the Downlink transmission.
Implementing asymmetric channel bandwidth enhances spectrum efficiency, reduces interference, and improves overall network performance. The primary objective is to achieve higher Modulation and Coding Schemes (MCSs) while minimizing the Uplink retransmission rate, even at the cost of channel bandwidth.
The following configurable feature can be enabled or disabled via the AP GUI:
- Asymmetric Uplink Bandwidth Enable/Disable
- Asymmetric Uplink Bandwidth (MHz)
- Asymmetric Uplink Central Frequency (MHz)
To configure the Asymmetric Uplink Bandwidth:
Navigate to AP > Configuration > Radio.
To view the status, navigate to AP > Monitor > Wireless.
To view the SM status, navigate to SM > UI > Status.
Perform the following to configure Asymmetric Uplink Bandwidth on the AP through cnMaestro Template:
{
"device_props": {
"asymBwEnable": "1",
"asymBwPrimaryFreq": "6675",
"asymBwUplinkBw": "5"
}
}
ClI configuration:
E4600_4x4_f00ae1>config set asymBwEnable 1
E4600_4x4_f00ae1>config set asymBwPrimaryFreq 6605
E4600_4x4_f00ae1>config set asymBwUplinkBw 1
E4600_4x4_f00ae1>config commit
E4600_4x4_f00ae1>config show | asy
asymBwEnable 1
asymBwMode 0
asymBwPrimaryFreq 6705
asymBwUplinkBw 5
Corresponding MIB objects:
asymBwEnable OBJECT-TYPE
SYNTAX
Integer32 (0|1)
MAX-ACCESS
read-write
STATUS
current
DESCRIPTION
"Enable Asymmetric Bandwidth:
0 - Disable,
1 - Enable
Device Allocation: AP, SM"
DEFVAL { 0 }
::= { cambiumAsymBw 1 }
asymBwMode OBJECT-TYPE
SYNTAX
Integer32 (0|1)
MAX-ACCESS
read-write
STATUS
current
DESCRIPTION
"Mode of Asymmetric Bandwidth:
0 - Manual mode,
1 - Automatic mode
Device Allocation: AP"
::= { cambiumAsymBw 2 }
asymBwPrimaryFreq OBJECT-TYPE
SYNTAX
Integer32 (4800..7200)
MAX-ACCESS
read-write
STATUS
current
DESCRIPTION
"Primary frequency for Asymmetric Bandwidth.
Device Allocation: AP"
::= { cambiumAsymBw 3 }
asymBwUplinkBw OBJECT-TYPE
SYNTAX
Integer32 (0|1|2|5|6)
MAX-ACCESS
read-write
STATUS
current
DESCRIPTION
"Uplink bandwidth for Asymmetric Bandwidth.
0 - auto
1 - 20 MHz
2 - 40 MHz
5 - 80 MHz
6 - 160 MHz
Note: The UL Bandwidth configuration cannot be wider than the channel
bandwidth.
Device Allocation: AP"
::= { cambiumAsymBw 4 }
- Not supported on DFS channels but works with FCC channels.
- Compatibility with ePMP 3xxx/Force 3xx may be limited in the first Beta release.
- SMs may not correctly apply Uplink bandwidth narrowing in certain cases.
