Alvarion BreezeACCESS II, System Manual

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Menus and Parameters
2-41
BreezeACCESS Version 4.5 System Manual
the basic sequence and the number of hopping frequencies
also define the hopping shift mechanism for generating
different actual hopping sequences.
3.
If two or more non-synchronized AUs are co-located and
Enhanced Scrambling is used for generating the basic
sequence, configure the Spanning Factor parameter to define
a different hopping sequence for each AU in order to minimize
interference between adjacent AUs.
4.
If several synchronized AUs are collocated (AU-BS), configure
the Hopping Sequence (Shift) parameter to define a different
hopping sequence for each AU in order to minimize
interference between adjacent AUs.
Frequencies Selection and Basic Sequence Generation
Using the HDM Parameters Menu
The HDM Parameters menu includes the following options:
!
HDM Mode
-
T
he HDM Mode option enables to enable or disable
the Hybrid digital Modulation mode of operation for the entire cell.
When enabled, the SU learns from the AU all the parameters that
define the hopping sequence. When disabled, the cell operates using
the configured Hopping Set and Hopping Sequence (Shift)
parameters.
The default HDM Mode is Disable .
!
Add Frequencies - The Add Frequencies option enables adding
discrete hopping frequencies or frequency ranges to the current list
of frequencies to be used. The operator enters a list of frequencies
and/or frequency ranges to be added. A comma is used to separate
between entries (no spaces). The entry range is from 2402 MHz to
2480 MHz in steps of 1 MHz. When a frequency range is added, all
frequencies in the range that are included in the list of frequencies
for use are added to the list. The list includes the frequencies that
define the range boundaries.
Example: Enter the list 2425-2430,2435,2440-2442 to add the
frequency channels 2425, 2426, 2427, 2428, 2429, 2430. 2435,
2440, 2441 and 2442 MHz.
The format of each entry can be in either MHz (2XXX) or in KHz
(2XXX.000), where XXX is in the range 400 to 500.
!
Remove Frequencies - The Remove Frequencies option enables the
deletion of frequencies from the existing list. The operator enters a
list of frequencies and/or frequency ranges to be removed, using the
same guidelines and format as in Add Frequencies above. When a
frequency range is removed, all frequencies in the range that are
included in the list of frequencies for use are removed. The list
includes the frequencies that define the range boundaries.
!
Erase All - The Erase All option erases all the entries from the list of
frequencies to be used.