Installation Guide

Chapter 3: Operation System statistics
Page
3-49
Interpreting Sounding statistics for AP
In the 450m AP GUI, sounding statistics can be found under Statistics > Sounding Statistics.
Table 134 Sounding Statistics - 450m AP page attributes
Attribute
Meaning
Subscriber This field displays the MAC address and Site Name of the SM/BHS. As each SM
or BHS registers to the AP/BHM.
LUID This field displays the LUID (logical unit ID) of the SM/BHS. As each SM or BHS
registers to the AP/BHM, the system assigns an LUID of 2 or a higher unique
number to the SM/BHS. If a SM/BHS loses registration with the AP/BHS and
then regains registration, the SM/BHS will retain the same LUID.
Spatial Frequency This field displays the spatial frequency value of the LUID or SM. Values 0 to
1023 are valid and value 2048 is considered as invalid.
Azimuth This field displays the Azimuth range in degrees corresponding to the spatial
frequencies of the bin. The zero-degree azimuth is boresight.
Note
Some SF ranges correspond to multiple azimuth ranges. This is
because for some spatial frequencies the AP generates beams in
multiple azimuth directions. The SM can be physically located in
any of the azimuth ranges.
Downlink - Sounding
State
Different types of Sounding states are:
• UNKNOWN: SM has recently registered to the AP but not registered with
the channel manager yet.
• NEW: SM has been registered with the channel manager and will soon
transition to ASSESSING.
• ASSESSING: AP will instruct SM to take the channel measurements. Channel
estimates and spatial frequencies will be calculated.
• TRACKING: Valid measurements resulted in good channel estimates and
spatial frequency. This SM can now be used for MU-MIMO.