Alvarion BreezeMAX Extreme System Manual page 124

Chapter 4 - Operation and Administration
If Random Channel Selection is enabled, a new channel to be tested is selected
randomly from the list of all available channels in the relevant band. If Random
Channel Selection is disabled, the new channel to be tested will be selected from
the list of channels defined by the user (see
The default is Disable (use the Usable Frequencies list).
CAUTION
If due to either restrictions imposed by local regulations or any other reason you cannot use the
entire frequency band supported by the selected Country Code, you should disable the Random
Channel Selection option and use the Usable Frequency option to define the frequencies manually
(see Section
For example, when using the 5.4 GHz FCC Country Code, you may use either frequencies in the
5470-5600 MHz and 5650-5725 MHz bands (with FCC), or frequencies in the 5725-5850 MHz
band.
4.5.4.5.9.2 DFS Type
The DFS Type parameter defines the DFS algorithm to be used. DFS Type is
configurable only for Universal Country Code.
The available DFS algorithm are ETSI, FCC, Normal ETSI, Normal FCC.
ETSI/FCC: The algorithm searches (passive listening) for radar signals
according to relevant ETSI or FCC regulations. To increase the probability of
radar detection for compliance with the relevant regulations, additional silence
zone is added to the uplink at the expense of slightly reduced throughput in
the downlink.
Normal ETSI/Normal FCC: The algorithm searches for radars according to
relevant ETSI or FCC regulations. However, the DL/UL ratio is not affected
(probability of detection is lower than required by the relevant regulations).
The default is Normal ETSI.
4.5.4.5.9.3 DFS Frequencies Management Level
The Frequencies Management Level parameter is not applicable if the selected
Country Code does not support DFS. The DFS Frequencies Management Level
parameter defines the method of handling the DFS Frequencies Status Table (see
"Show Frequencies Status Table" on page
no Diversity operation mode. When set to Sector Level, the Frequencies Table of
each sector is managed independently. When set to BTS Level, each sector uses
information about frequencies (Radar Detected/Clear Channel) from the other
one.
BreezeMAX Extreme
4.7.2.2.2.3).
"Usable Frequencies" on page
175) in units using Dual Sector Dual BS
103
BTS Menu
180).
System Manual