PMP 450 Planning Guide
Attribute
Meaning
Channel Bandwidth
The channel size used by the radio for RF transmission.
Selecting multiple channel bandwidths will increase registration and re-
registration times.
Cyclic Prefix Scan
The cyclic prefix for which AP scanning is executed.
AP Selection Method
Operators may configure the method by which a scanning SM selects an AP. By
default, AP Selection Method is set to “Optimize for Throughput”, which has
been the mode of operation in releases prior to 12.0.3.1.
Power Level
: AP selection based solely on power level
OR
Optimize for Throughput
: AP selection based on throughput optimization – the
selection decision is based on power level (which affects the modulation state),
channel bandwidth (which affects throughput) and number of SM registrations to
the AP (which affects system contention performance).
Color Code 1 to 10
Color code allows you to force the SM to register to only a specific AP, even
where the SM can communicate with multiple APs. For registration to occur, the
color code of the SM and the AP
must
match. Specify a value from 0 to 254.
Color code is not a security feature. Instead, color code is a management feature,
typically for assigning each sector a different color code. The default setting for
the color code value is 0. This value matches only the color code of 0 (
not
all 255
color codes).
SMs may be configured with up to 10 color codes. These color codes can be
tagged as
Primary
,
Secondary
, or
Tertiary
, or
Disable
. When the SM is
scanning for APs, it will first attempt to register to an AP that matches one of the
SM’s primary color codes. Failing that, the SM will continue scanning and
attempt to register to an AP that matches one of the SM’s secondary color codes.
Failing that, the SM will continue scanning and attempt to register to an AP that
matches one of the SM’s tertiary color codes. This is all done in the scanning
mode of the SM and will repeat until a registration has occurred.
Color codes in the same priority group are treated equally. For example, all APs
matching one of the SM’s primary color codes are analyzed equally. Likewise,
this evaluation is done for the secondary and tertiary groups in order. The
analysis for selecting an AP within a priority group is based on various inputs,
including signal strength and number of SMs already registered to each AP.
The first color code in the configuration is the pre-Release 9.5 color code. Thus,
it is always a primary color code for legacy reasons.
The color codes can be disabled, with the exception of the first color code.
1-34
pmp-0047 (March 2014)
Summary of Contents for PMP 450
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