Instructions

Introduction to the AP Group Web Management System
Stellar AP User Guide
ALCATEL-LUCENT ENTERPRISE 39
Figure 4-27 Edit RF Information
Note4-6: Radio Dynamic Adjustment™ (RDA) is a technology that adjusts the radio working channel and
transmitting power according to the wireless environment around it. It includes Auto Channel Selection (ACS)
and Auto Power Control (APC) functions. By default, RDA is enabled.
RDA relies on the background scanning feature. To ensure the RDA is effective, make sure the background
scanning is ON, see “Performance optimization Window”.
Table 4-12: Key word specification in RF Configuration Window
Parameter
Specification
Client Aware
When enabled, Auto Channel Selection does not change channels for Stellar
APs with connected clients, except for high-priority events such as RADAR
detected. If "Client Aware" is Disabled, the Stellar AP may change to a more
optimal channel, which may temporarily disrupt current client traffic.
Short GI
Enable/Disable Short Guard Interval. In IEEE 802.11 OFDM-based
communications, Guard Interval is used to ensure that distinct transmissions
occur between the successive data symbols transmitted by a device. The
standard symbol Guard Interval used in 802.11 OFDM is 800 nanoseconds in
duration. To increase data rates, the 802.11 standard added optional support
for a 400 nanoseconds guard interval (Short Guard Interval). This would
provide approximately an 11% increase in data rates. However, using the
Short Guard Interval will result in higher packet error rates when the delay
spread of the RF channel exceeds the Short Guard Interval, or if timing
synchronization between the transmitter and receiver is not precise. By
Default, Short Guard Interval is enabled on the wireless radio.
If the multipath effect is too serious (too many metals or other reflecting
materials), disabling Short Guard Interval is recommended.