User Manual

Chapter 4 - Operation and Administration BS Menu
BreezeMAX Extreme 150 System Manual
 Fix: The permutation base is defined by the UL Permutation Base Value
parameter (see below).
 Variable: The permutation base depends on the calculated Preamble Index as
follows:
 Rotated: Starts with the same value as calculated for Variable, incremented by
1 (modulo 70) each frame.
The default is Fix.
In the current release only the Fix option is supported.
4.8.2.2.5.4 UL Permutation Base Value
The value of the uplink permutation base for Fix UL Permutation Base.
The range is from 0 to 69.
The default is 0.
4.8.2.2.5.5 Major Group
The subchannelization major groups to be used.
A number from 0 to 63 representing the bit map of major groups 0 to 5. A bit is set
if the applicable major group is selected. The supported combinations depend on
the bandwidth: For BS Bandwidth of 5MHz major group can be 0, 2, 4 or any
combination of 0 and 2 or 0 and 4 or 2 and 4. For BS Bandwidth of 10MHz major
groups can be 0,1 or 2,3 or 4,5 or 0,1 and 2,3 or 2,3 and 4,5 or 0,1 and 4,5 or
0,1,2,3,4,5.
The default for bandwidth of 10 MHz is 63 (all major groups selected). The default
for bandwidth of 5 MHz is 21 (major groups 0, 2 and 4 selected).
In the current release only the default value (63) is supported.
Table 4-21: Variable UL Permutation Base Calculation
Calculated Preamble Index UL Permutation Base
0-69 = Preamble Index
70-95 = Preamble Index-70
96-111 = Preamble Index-42
112-113 = Preamble Index-112