Table 5-1 describes
the radio resource management configuration tasks.
Table 5-1 Radio resource management configuration tasks
Scenario
|
Description
|
Task
|
Configure interference detection
|
Wireless channels of WLANs are
vulnerable to interference in surrounding radio environments, and
the service quality is therefore degraded. If interference detection
is configured, a monitor AP can know the radio environment in real
time and report alarms to an
AC in a timely manner.
Interference
detection enables an AP to detect AP co-channel interference, AP adjacent-channel
interference, and STA interference.
AP co-channel interference: Two APs working on the same frequency
band interfere with each other. For example, on a large-scale WLAN
(a university campus network), different APs often use the same channel.
When there are overlapping areas among these APs, co-channel interference
exists, degrading network performance.
AP adjacent-channel interference: Two APs with different center
frequencies have overlapping areas, resulting in adjacent-channel
interference. Therefore, if APs are placed too close to each other
or they have strong signals, more noise will be produced, degrading
network performance.
STA interference: If there are many STAs that are managed by
other APs around an AP, services of the STAs managed by the local
AP may be affected.
|
Configuring Interference Detection
|
Configure radio calibration
|
On a WLAN, operating status of APs is affected by the radio
environment. For example, a large-power AP can interfere with adjacent
APs if they work on overlapping channels. The radio calibration function
can dynamically adjust channels and power of APs managed
by the same AC to ensure that the APs work at the optimal performance.
Depending
on the scope of radio calibration, two radio calibration modes are
available:
- Global radio calibration: The AC dynamically allocates channels
and power to all the APs in an AP region. Generally, this calibration
mode is used on a newly deployed WLAN or a WLAN where the radio environment
deteriorates in most areas.
- Partial radio calibration: The AC dynamically allocates channels
and power to specified APs. Generally, this calibration mode is used
when new APs are added to the network or the radio environment deteriorates
in some areas.
|
Configuring Radio Calibration
|
Configure load balancing
|
Load balancing can evenly distribute AP traffic loads to
ensure high bandwidth for each STA. The load balancing function applies
to wireless networks with high user densities to ensure proper access
of STAs.
|
Configuring Load Balancing
|
Configure High Density Boost
|
Dense AP deployment is an important measure to improve user
experience in scenarios with high-density users and a high volume
of traffic, such as sports stadiums, libraries, lecture halls, conference
sites, and dormitories.
A WLAN has only three non-overlapping
channels on the 2.4 GHz frequency band. When APs are deployed densely,
multiple APs have to work on the same channel, resulting in co-channel
interference. This interference degrades network performance. The
High Density Boost function enables an AP to adjust the antenna, power
and signal receive threshold using specific algorithms. This function
reduces co-channel interference between APs and improves users' Internet
experience.
This function applies to high-density WLANs where
APs are deployed densely, such as sports stadiums, libraries, lecture
halls, dormitories, and conference sites.
|
Configuring Dynamic EDCA Parameter Adjustment
Configuring Automatic Per Packet Power Adjustment
|
