User's Manual

Appendix B. Basic Parameters
BreezeACCESS Series 37 Base Station Equipment Installation Manual
Parameters Specific for BreezeACCESS MMDS
The following parameters are set in BreezeACCESS MMDS products.
•
Hopping Shift
–Displays the current value of the hopping shift parameter
and allows entry of a new hopping shift value. This parameter is available
only in Access Units – the Subscriber Units learn it during the association
process.
When several Access Units that use the same hopping frequencies are
collocated, the Hopping Shift parameter is used to define a different hopping
sequence for each AU. The target is to achieve a minimal level of cross
interference between AUs through maintaining a minimal distance of 3 MHz
between the frequencies used by adjacent AUs at any given moment. Thus,
the collocated AUs should use different hopping shifts.
The available range for hopping shifts is dependent on the number of
frequencies selected and is equal to the number of hopping frequencies -1
(minus 1). The Hopping Shift parameter does not have any effect when using
a single frequency. The default value of the Hopping Shift parameter is 0.
•
Flexible Hopping Definition
– Allows adding and removing frequencies to
the list of hopping frequencies; displays the selected hopping frequencies and
the current hopping sequence (based on the previous selections made before
the last Reset). The new selections will come into effect only after the next
Reset.
The Flexible Hopping is based on using the standard MMDS 6MHz channels
and frequencies. See Appendix C for a detailed list of the standard channels,
as well as the frequency band and the hopping frequencies for each of these
channels.
The Flexible Hopping menu includes the following options, allowing
adding/removing standard MMDS channels or adding/removing discrete
standard hopping frequencies.