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34 radio configuration, Radio overview, Channel adjustment – H3C Technologies H3C WX6000 Series Access Controllers User Manual

Page 356: Radio configuration

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34

Radio Configuration

The sample output in this manual was created on the WX5004. The output on your device may

vary.

The grayed out functions or parameters on the Web interface indicate that they are not supported

or cannot be modified.

The models listed in this manual are not applicable to all regions. Please consult your local sales

office for the models applicable to your region.

Radio Overview

Radio signals are susceptible to surrounding interference. Causes of radio signal attenuation in

different directions are very complex. Therefore, we need to make careful plans before deploying a

WLAN network. After WLAN deployment, the running parameters still need to be adjusted because the

radio environment is always varying due to interference from mobile obstacles, micro-wave ovens and

so on. To adapt to environment changes, radio resources such as working channels and transmit power

should be dynamically adjusted. Such adjustments are complex and require experienced personnel to

implement regularly, which brings high maintenance costs.

WLAN radio resource management (RRM) is a scalable radio resource management solution. Through

information collection (APs collect radio environment information in real time), information analysis (The

AC analyzes the collected information), decision-making (The AC makes radio resource adjustment

configuration according to analysis results), and implementation (APs implement the configuration

made by the AC for radio resource optimization), WLAN RRM delivers a real-time, intelligent, integrated

radio resource management solution, which enables a WLAN network to quickly adapt to radio

environment changes and keep staying in a healthy state.

Channel Adjustment

Working channels available in WLANs are few. For example, there are only three working channels in a

2.4G WLAN network. As a result, channel overlapping is very easy to occur. In addition, other radio

sources may exist in a WLAN, such as radar, micro-wave ovens, which interfere with the operation of

APs. All these problems can be resolved through dynamic channel adjustment.

With dynamic channel adjustment, each AP can be assigned with the best channel in real time to avoid

co-channel interference and interference from other radio sources, and thus continuous communication

can be ensured to provide for high-reliability data transmission.