guard-interval-mode

Function

The guard-interval-mode command configures the guard interval (GI) mode.

The undo guard-interval-mode command restores the default GI mode.

By default, the GI mode for 802.11n/ac is short, and the GI mode for 802.11ax is 0.8 us.

Format

guard-interval-mode { short | normal }

undo guard-interval-mode

guard-interval-mode dot11ax { dot8 | 1dot6 | 3dot2 }

undo guard-interval-mode dot11ax

Parameters

Parameter	Description	Value
short	Sets the GI mode for 802.11n/ac to short.	-
normal	Sets the GI mode for 802.11n/ac to normal.	-
dot11ax { dot8 \| 1dot6 \| 3dot2 }	Specifies the GI mode for 802.11ax.	-

Views

2G radio profile view, 5G radio profile view

Default Level

2: Configuration level

Usage Guidelines

During data transmission, the receive and transmit ends do not receive and send data at all times. When data is transmitted and received or transmitted for multiple times, multi-path interference exists during radio transmission in the space. Setting the GI can reduce interference impact on signals.

A smaller GI indicates higher transmission efficiency. A larger GI indicates a higher anti-interference capability. In indoor environments with little interference, a small GI is recommended. In outdoor environments with high interference, a large GI is recommended.

The GI for 802.11a/b/g is fixed at 800 ns.
The GI for 802.11n and 802.11ac is 400 ns (short) or 800 ns (normal).
The GI for 802.11ax can be 0.8 us (800 ns), 1.6 us, or 3.2 us.

Example

# Set the GI mode to short.

<HUAWEI> system-view
[HUAWEI] wlan 
[HUAWEI-wlan-view] radio-2g-profile name default
[HUAWEI-wlan-radio-2g-prof-default] guard-interval-mode short