KPIs Supported in LTE AP
The following table provide information about KPIs supported by LTE APs.
KPI | Description |
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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 E-RABs successful to setup C = Number of initial E-RABs 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 Re-establishment Success rate | To calculate RRC Connection Re-establishment Success rate, use the following formula:
(∑A/∑B)*100 where A = Number of RRC connection re-establishment successes B= Number of RRC connection re-establishment attempts To calculate per venue/system, use ∑ of all RSCs. |
Initial E-RAB Setup Success rate | To calculate initial E-RAB Setup Success rate, use the following formula:
(∑A/∑B)*100 where A = Number of initial E-RABs successful to setup B = Number of initial E-RABs attempted to setup |
Additional E-RAB Setup Success rate | To calculate additional E-RAB Setup Success rate, use the following formula:
(∑A /∑B)*100 where A = Number of additional E-RABs successful to setup B = Number of additional E-RABs 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 E-RABs successful to setup B = Number of initial E-RABs 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 E-RABs successful to setup B = Number of additional E-RABs 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:
[(A-B)/A]*100 where A = Measurement Period B = SAS unavailable time |
Cell Availability | To calculate cell availability, use the following formula:
[(A-B)/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 = (1-A/T)*100 where A = ∑ of all frequencySyncLossTime reports for all RSC with GPS / # no. of RSC with GPS T = Reporting Time interval |
KPI | Description |
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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 |
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GPS Availability | The GPS availability is reported as A or calculated in percentage value as
GPS Availability = (1-A/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:
[(A-B)/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:
100-A 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 |