KPIs Supported in LTE AP
The following table provide information about KPIs supported by LTE APs.
KPI  Description 

DCR (Dropped Call Rate)  To calculate Dropped Call rate, use the following formula:
(100*A)/(B+C) A = Number of dropped calls B = Number of additional ERABs successful to setup C = Number of initial ERABs successful to setup To calculate per venue/system, use ∑ of all RSCs. 
RRC Connection Establishment Success rate  To calculate RRC Connection Establishment Success rate, use the following formula:
(∑A/∑B)*100 where A = Number of RRC connection establishment successes B= Number of RRC connection establishment attempts To calculate per venue/system, use ∑ of all RSCs. 
RRC Connection Reestablishment Success rate  To calculate RRC Connection Reestablishment Success rate, use the following formula:
(∑A/∑B)*100 where A = Number of RRC connection reestablishment successes B= Number of RRC connection reestablishment attempts To calculate per venue/system, use ∑ of all RSCs. 
Initial ERAB Setup Success rate  To calculate initial ERAB Setup Success rate, use the following formula:
(∑A/∑B)*100 where A = Number of initial ERABs successful to setup B = Number of initial ERABs attempted to setup 
Additional ERAB Setup Success rate  To calculate additional ERAB Setup Success rate, use the following formula:
(∑A /∑B)*100 where A = Number of additional ERABs successful to setup B = Number of additional ERABs attempted to setup 
Initial Bearer Setup Success Rate  To calculate Initial Bearer Setup Success rate, use the following formula:
(A*100)/B where A = Number of initial ERABs successful to setup B = Number of initial ERABs attempted to setup 
Additional Bearer Setup Success Rate  To calculate Initial Bearer Setup Success rate, use the following formula:
(A*100)/B where A = Number of additional ERABs successful to setup B = Number of additional ERABs attempted to setup 
Handover Success rate  To calculate Handover Success rate, use the following formula:
(∑A/∑B)*100 where A= Number HO successes B = Number HO attempts 
SAS Availability  To calculate SAS Availability, use the following formula:
[(AB)/A]*100 where A = Measurement Period B = SAS unavailable time 
Cell Availability  To calculate cell availability, use the following formula:
[(AB)/A]*100 where

Average Cell Availability  To calculate average cell availability per venue/system, use the following formula:
{ 1  (U/T) } * 100 = % where
To calculate average cell availability for plots, compute and display cell availability on the charts/plots (if possible) or the reported Cell unavailability time. 
Average number of Active UEs  To calculate average number of active UEs per venue/system, use sum of all UEs for RSCs. 
Total DL Traffic Volume (GBytes)  To calculate total DL traffic volume per RSC, use the following formula:
∑ of all dlTrafficVolume reported for the RSC in a given interval of reporting time. 
Total UL Traffic Volume (GBytes)  To calculate total UL traffic volume per RSC, use the following formula:
∑ of all ulTrafficVolume reported for the RSC in given a interval of reporting time. 
Frequency Synchronized  Frequency synchronized is reported as A or calculated in percentage value as
Frequency Synchronization = (1A/T)*100 where A = ∑ of all frequencySyncLossTime reports for all RSC with GPS / # no. of RSC with GPS T = Reporting Time interval 
KPI  Description 

Average DL Throughput (Mbps)  To calculate per venue/system, use (∑ of all RSCs)/# of RSCs. 
Average UL Throughput (Mbps)  To calculate per venue/system, use ∑ of all RSCs. 
DL Traffic Volume (GBytes)  To calculate per venue/system, use ∑ of all RSCs. 
UL Traffic Volume (GBytes)  To calculate per venue/system, use ∑ of all RSCs. 
KPI  Description 

GPS Availability  The GPS availability is reported as A or calculated in percentage value as
GPS Availability = (1A/T)*100 where A = (∑ of all gpsUnavailableTime reports for each RSC with GPS as timing source/ # no of RSC with GPS )  Reporting Time T = Reporting Time interval 
Phase Locked  To calculate Phase Locked, use the following formula:
[(AB)/A]*100 where A = measurement_period B = Phase sync loss time For per venue KPI, use the following formula: Phase sync loss time = ∑ of all GPS RSC /# no of RSC with GPS 
Holdover  To calculate Holdover, use the following formula:
100A where A = Percentage of time in Phase Locked To calculate per venue KPI, use the following formula: percentagePhaseLocked = ∑ of all percentageHoldover from RSC with GPS /# no of RSC with GPS 
Frequency Phase Recovery  To calculate Frequency Phase Recovery, use the following formula:
(A/B)*100 where A = Frequency Sync Loss Time B= meaurement_period To calculate per venue KPI, use the following formula: frequencySyncLossTime = ∑ of all GPS RSC /# no of RSC with GPS 